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某大学综合公寓楼毕业设计计算书

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'摘要本工程为郑州市某大学综合公寓楼,建设地点位于河南省郑州市,总建筑面积约。结构形式采用钢筋混凝土框架结构,主体为5层,抗震设防烈度为7度,Ⅱ类场地土,基本风压,基本雪压。本设计主要对方案中横向框架的第⑨轴进行结构设计。在确定了框架布局之后,进行了重力荷载代表值的计算,求出自震周期。接着按底部剪力法计算出水平地震力,之后求出水平荷载作用下结构内力。接着计算竖向荷载作用下的结构内力,包括弯矩、剪力以及轴力。然后进行了内力组合,找出最不利组合进行截面配筋计算,并绘制结构施工图。后边还对楼梯进行了设计,对梯段板、平台板及平台梁进行了配筋计算并绘图。最后进行了基础设计,对其进行了配筋及绘图。在整个结构设计过程中,严格遵循了相关专业的规范要求。参考了其它毕业设计资料和国家标准,对设计的各个环节进行了综合详细的考虑。总之,安全、适用、经济是本设计的基本原则。关键词:框架结构;结构设计;内力组合;配筋计算 BuildingStructureDesignofZhengzhouuniversityapartmentblocksAbsrtact:ThisprojectisacomprehensiveapartmentbuildinginZhengzhouUniversity,theconstructionsiteislocatedinZhengzhou,HenanProvince,withatotalconstructionareaofabout5148squaremeters.Structuralformofreinforcedconcreteframestructure,themainbodyforthe5storey,seismicfortificationintensityof7degrees,ClassIIsoil,thebasicwindpressureis0.55andthebasicwindpressureis0.25.ThemaindesignoftheschemeinSection9transverseframeshaftstructuredesign.Afterdeterminingtheframelayout,thecalculationoftherepresentativevalueofthegravityloadiscarriedout.Thencalculatethehorizontalseismicforcebythebottomshearmethod,andthencalculatetheinternalforceofthestructureunderthehorizontalload.Thencalculatetheverticalloadofthestructureoftheinternalforces,includingbendingmoment,shearforceandaxialforce.Thentheinternalforcecombination,tofindoutthemostunfavorablecombinationofcrosssectionreinforcementcalculation,anddrawthestructureoftheconstructionplan.Thenthestairsweredesigned,andtheladdersectionboard,platformboardandtheplatformbeamwerecalculatedanddrawn.Atlast,thefoundationdesigniscarriedout,andthereinforcementanddrawingarecarriedout.Inthewholestructuredesignprocess,strictlyfollowtherequirementsoftherelevantprofessionalnorms.Referencetoothergraduationdesigninformationandnationalstandards,thedesignofthevariousaspectsofacomprehensivedetailedconsideration.Inshort,security,applicationandeconomyarethebasicprinciplesofthedesign.Keywords:framestructure;structuredesign;internalforcecombination;reinforcementcalculation 郑州某大学综合宿舍楼建筑及结构设计一、建筑设计(一)建筑平面设计1.工程概况本工程为郑州某大学综合公寓楼,建筑高度为17.4m,共5层。一层层高3.6m,二至五层层高3.3m。基地面积为,总建筑面积约为。本建筑主要由宿舍标间、套间,办公室,会议室等组成。建筑平面布置详见建筑平面图。2.设计条件(1)结构形式:本建筑采用钢筋混凝土框架结构,设计使用年限为50年。(2)气象条件:地区基本风压,基本雪压。地面粗糙度为B类,属丙类建筑。(3)抗震设防烈度:7度,设计基本地震加速度0.15g。(4)工程地质资料及水文资料:拟建场地位于河南省郑州市,所属地貌单元为第四系冲洪积层,II类场地土,场地标准冻深1.80m,地下水埋深16m。3.平面布置本建筑采用了内廊式的设计方案。楼道宽度为2.7m。两端有疏散出口,平时可作为一般出入口使用,设置了两部双跑楼梯,两端带有卫生间及盥洗室,大门设置在了偏左的位置,以便人们进门时能看到主要的垂直交通。一层由办公室、教师休息室及备课室、会客室、医疗室等组成,提供了快捷方便的办公环境。二层至五层布置了宿舍,其中二至四层为标间,五层为套间。标间为六人间,宿舍宽敞,开间3.9m,进深6.9m82 ,足够容纳六人的生活和学习,宿舍还带有阳台,以便人们在晴朗的日子里能够充分体验太阳的温暖。每层还带有健身室和自习室等公共活动室,为学生的娱乐和学习提供良好的平台。套间带有客厅和卧室,价格方面较标间贵,但宽敞舒适,每个标间大约55平米左右,并带有景观阳台,学生可充分利用空间安排自己的生活和学习。总之,本建筑对各个房间使用空间及使用功能进行了综合详细的布置,动静分开,使各个房间都能发挥其主要功能。(二)工程做法1.屋面做法3+4厚SBS改性沥青防水卷材30厚1:3水泥砂浆找平1:6水泥焦渣找坡(2%),最薄处30厚120厚钢筋混凝土楼板2.楼地面做法(1)房间地面做法10厚地砖,干水泥擦缝50厚1:3水泥砂浆结合层30厚细石混凝土垫层120厚钢筋混凝土结构层(2)卫生间、盥洗室地面做法10厚地砖,干水泥擦缝20厚素混凝土刚性防水层30厚C20细石混凝土找坡10厚1:3水泥砂浆找平120厚钢筋混凝土楼板(3)楼道、楼梯间地面做法10厚地砖,干水泥擦缝50厚1:3水泥砂浆结合层30厚细石混凝土垫层120厚钢筋混凝土结构层82 3.墙身做法外墙采用250厚粉煤灰加气混凝土砌块,内墙采用200厚粉煤灰加气混凝土砌块,采用M10混合砂浆砌筑。(1)外墙面做法(高级涂料墙面)自外向内依次为:10厚高级涂料一层6厚水泥砂浆(掺建筑胶)聚苯板保温层刷素水泥浆一道9厚1:3水泥砂浆中层刮平扫毛刷加气混凝土界面处理剂一道(2)房间、楼道、楼梯间内墙面做法自外向内依次为:刷白色乳胶漆两道满刮腻子15厚1:1:6水泥石灰砂浆刷加气混凝土界面处理剂一道(3)卫生间内墙面做法1:1水泥砂浆勾缝5厚釉面砖1.5厚聚合物水泥基复合防水涂料15厚1:1:6水泥石灰砂浆喷湿墙面(4)女儿墙1:3水泥砂浆抹面,刷涂料一层4.室外台阶做法自上向下依次为:20厚1:3水泥砂浆面层100厚C15细石混凝土结合层80厚碎砖垫层82 素土夯实5.散水做法自上向下依次为:20厚1:3水泥砂浆面层10水泥浆一道(掺建筑胶)50厚C15素混凝土150厚3:7灰土素土夯实6.顶棚做法自外向内依次为:刷乳胶漆一道封底漆一道(干燥后做面涂)3厚1:0.5:2.5水泥石灰膏砂浆找平5厚1:0.2:3水泥石灰膏砂浆打底扫毛或划出纹道刷素水泥浆一道(掺建筑胶)82 二、结构设计(一)结构平面布置及计算简图的确定1.结构设计概述本项目为5层钢筋混凝土框架结构体系,占地面积约为1100,总建筑面积约为5148,首层层高3.6m,二至五层层高3.3m,室内地坪为m,室内外高差为0.45m。2.结构平面布置柱网布置图如图所示:图2-1柱网平面布置图3.梁柱截面尺寸及板厚的确定(1)梁截面尺寸的确定①横向框架梁取轴线9进行计算AB跨:,取。,取BC跨:为施工方便,取。②纵向框架梁取轴线B进行计算82 2-3跨:,取。,取。③横向次梁取轴线8进行计算,取。(2)柱截面尺寸的确定根据规范得:矩形截面柱的边长不宜小于400mm,柱截面的高宽比不宜大于3。轴压比限值条件为:得出:得:所以选取柱子截面为。(3)板厚的确定楼面板及屋面板均采用现浇钢筋混凝土结构,取楼板厚度为120mm。4.材料选用所有构件均选用C30。梁的纵向受力钢筋选用HRB400,箍筋选用HPB300,柱的纵向受力钢筋选用HRB400,箍筋选用HPB300,板均选用HPB300。(二)荷载计算1.恒载计算(1)屋面永久荷载SBS改性沥青卷材防水层30厚1:3水泥砂浆找平层1:6水泥焦渣找坡,最薄处30厚120厚钢筋混凝土楼板82 10厚混合砂浆抹灰合计(2)层楼面荷载(包括楼道,楼梯间)10厚地砖楼面50厚水泥砂浆结合层30厚细石混凝土垫层120厚钢筋混凝土楼板10厚混合砂浆抹灰合计(3)卫生间、盥洗室地面10厚地砖楼面30厚素混凝土刚性防水30厚水泥砂浆找坡120厚钢筋混凝土楼板10厚混合砂浆抹灰合计2.活载计算表2-1活荷载取值标号类别活荷载标准值(KN/m2)1不上人屋面23456宿舍、办公室等一般房间资料室多功能厅健身室微机室7楼道8楼梯9卫生间、盥洗室82 10阳台3.梁、柱、墙、门窗重力荷载计算外墙采用250厚粉煤灰加气混凝土砌块,则外墙单位墙面重力荷载为:内墙采用200厚粉煤灰加气混凝土砌块,则内墙单位墙面重力荷载为:本工程门采用实木门及铝塑门,窗采用铝合金窗,统一为门荷载取,窗荷载取。(1)梁、柱重力荷载标准值的计算表2-2梁柱自重荷载标准值层次构件`bhrβgLinGi/m/m/(KN/m3)/(KN/m)/m/KN1层边横梁0.250.6251.053.9386.318446.569中横梁0.250.4251.052.6252.1949.613横向次梁0.250.5251.053.2816.616346.474纵梁0.30.65251.055.1197.216589.709柱0.60.6251.19.9004.55361621.6202-5层边横梁0.250.6251.053.9386.318446.569中横梁0.250.4251.052.6252.1949.613次梁0.250.5251.053.2816.616346.474纵梁0.30.65251.055.1197.216589.709柱0.60.6251.19.9003.3361176.120注:表中表示考虑梁柱粉刷层重力荷载的增大系数;g表示单位长度构件重力荷载;n表示构件数量;梁长度取净长;柱长度取层高。(2)重力荷载代表值的计算①一层墙体、门、窗自重外墙面积:内墙面积:82 一层墙体总重:窗户自重:门自重:②一层楼板恒载、活载计算房间面积:阳台板面积:楼道面积:卫生间面积:楼梯间面积:一层恒载:一层活载:经上述计算可得,一层重力荷载代表值为:(依据:楼面恒载+50%楼面均布荷载+纵横梁自重值+楼面上下半层柱自重值+楼面上下各半层墙体自重值+门窗自重值)③二~四层墙体、门、窗自重外墙面积:内墙面积:阳台处墙体(包括隔墙,墙厚200):阳台墙体重量:二~四层各层墙体总重:82 ④二~四层楼板恒载、活载计算房间面积:阳台板面积:楼道面积:卫生间、盥洗室面积:楼梯间面积:二~四层恒载:二~四层活载:经上述计算可得,二~四层重力荷载代表值为:⑤顶层楼板恒载、活载计算房间面积:阳台板面积:楼道面积:卫生间、盥洗室面积:楼梯间面积:顶层恒载:五层活载:顶层重力荷载代表值为:女儿墙自重:82 (根据:屋面恒载+50%屋面雪载+纵横梁自重值+半层柱自重值+半层墙体自重值+门窗自重值)经上述计算可得,重力荷载代表值如下图所示:图2-3重力荷载代表值(三)框架侧移刚度的计算1.框架横梁线刚度ib的计算表2-3一至五层横梁、纵梁线刚度类别边横梁纵梁中横梁2.框架柱线刚度ic的计算82 表2-4一至五层柱线刚度层次一层柱455030000二~五层柱3300300003.各层框架横向侧移刚度的计算各层框架横向侧移刚度的计算采用D值法进行计算。表2-5一层D值计算柱类型柱的根数边框AD4边框BC4中框AD14中框BC14表2-6二~五层D值计算柱类型柱的根数∑D2边框AD4边框BC4中框AD14中框BC14经上述计算可得:,则该框架属于规则框架结构。(四)横向水平荷载作用下框架结构的内力和侧移计算1.横向自震周期计算82 表2-7结构顶点的假想侧移计算层次Gi(KN)Vgi(KN)∑Di(N/mm)△ui(mm)ui(mm)58756.7768756.776660161.0613.26308.69410695.86230351.305660161.0645.98265.66310695.86241047.167660161.0662.22219.68210695.86251743.029660161.0678.38157.46110859.43562602.464791659.7479.0879.08一般情况下,可采用顶点位移法来计算结构基本周期。其基本周期可按下列公式计算:其中。2.水平地震作用及楼层地震剪力计算本结构高度不超过40m,质量和刚度沿高度分布比较均匀,变形以剪切变形为主,可以采用底部剪力法计算水平地震作用。(1)结构等效总重力荷载的计算(2)计算水平地震影响系数本地区设计地震分组为第一组,建筑场地类别为II类,则其设计特征周期本地区抗震设防烈度为7度,设计地震基本加速度为0.15g。由《建筑抗震设计规范》得:由于所以(其中)(3)计算结构水平地震作用标准值FEk所以需要考虑顶部附加水平地震作用。82 顶部附加地震作用系数取(4)各质点横向水平地震作用及楼层地震剪力的计算横向水平地震作用计算公式:表2-8各质点横向水平地震作用及楼层地震剪力表层次521.058756.776184330.1350.2348745.21745.21414.4510695.862154555.2060.1969624.922152.15311.1510695.862119258.8610.1519482.102634.2527.8510695.86283962.5170.1069339.282973.5314.5510859.43549410.4290.0629199.633173.16横向水平地震作用及楼层地震剪力如下图所示:图2-4横向水平地震作用及楼层地震剪力82 3.多遇地震作用下的位移验算水平地震作用下框架结构的层间位移和顶点位移分别按下列公式计算:多遇地震地震下,框架结构的层间弹性位移角应满足:,层间弹性位移角限值为。表2-9横向水平地震作用下的位移验算层次5745.21660161.061.12933000.0003442152.15660161.063.26033000.0009932634.25660161.063.99033000.0012122973.53660161.064.50433000.0013613173.16791659.744.00845500.00088由上述计算可得,最大层间位移角,符合规范要求。4.水平地震作用下的框架内力计算(1)各层柱端弯矩及剪力计算计算公式如下:①各层柱反弯点高度的确定表2-10各层边柱反弯点高度的确定层次82 50.3990.20000.240.3990.40000.430.3990.450000.4520.3990.550000.5510.5510.7250000.725注:对底层柱不考虑值,不作y1的修正。对底层柱,不作y3的修正。对顶层柱,不作y0修正。表2-11各层中柱反弯点高度的确定层次50.7010.40000.440.7010.450000.4530.7010.450000.4520.7010.50000.510.9660.650000.65②各层柱端弯矩及剪力计算表2-12各层边柱端弯矩及剪力计算层次边柱/m/KN(N/mm)yhy53.3745.21660161.117962.7520.270.660.213.3853.5143.32152.15660161.117962.7558.541.320.477.27115.9133.32634.25660161.117962.7571.651.4850.45106.4130.0423.32973.53660161.117962.7580.881.8150.55146.8120.114.553173.16791659.717003.468.153.30.725224.985.27表2-13各层中柱端弯矩及剪力计算层次中柱/m/KN(N/mm)yhy82 63.3745.21660161.128134.4431.740.990.331.4273.3243.32152.15660161.128134.4491.681.4850.45136.14166.433.32634.25660161.128134.44112.221.4850.45166.65203.6823.32973.53660161.128134.44126.671.650.5209.01209.0114.553173.16791659.720387.5781.722.9580.65241.73130.14(2)梁端弯矩、剪力、柱轴力计算梁端弯矩可按节点弯矩平衡条件,将节点上、下端弯矩之和按左、右梁线刚度比例分配。图2-5节点弯矩平衡节点左侧梁端弯矩:节点右侧梁端弯矩:梁端剪力可根据梁的左、右端弯矩,按下式计算:表2-14梁端弯矩、剪力及柱轴力计算层次边横梁中横梁柱轴力MblMbrLVbMblMbrLVb边柱N中柱N553.5141.796.913.8131.5331.532.723.36-13.81-9.554163.89143.806.944.59108.48108.482.780.36-86.49-68.273207.31193.706.958.12146.12146.122.7108.24-144.61-118.392226.50214.136.963.86161.53161.532.7119.65-208.47-174.181232.07193.326.961.65145.83145.832.7108.02-270.12-220.55经上述计算可得,左震作用下弯矩,剪力,轴力图如下图所示:82 图2-6左震作用下弯矩图图2-7左震作用下剪力图,轴力图5.风荷载计算(1)集中荷载的计算风压标准值计算公式如下:由于结构高度,则风振系数取。82 风荷载体型系数取(迎风面),(背风面)。风压高度变化系数可查《建筑结构荷载规范》,地面粗糙度类别为B类,将风荷载换算成作用于框架节点上的集中荷载。表2-15作用于框架的风荷载计算层次51.01.317.251.18950.5510.93216.62041.01.313.951.11060.5510.19926.81931.01.310.651.01820.559.48336.30221.01.37.351.00000.559.23245.53411.01.34.051.00000.5512.69058.224注:z为框架节点至室外地面高度。(2)各层柱端弯矩及剪力计算表2-16各层边柱端弯矩及剪力计算层次边柱/m/KN(N/mm)yhy53.316.6292194.3817962.753.2381.1550.353.746.9543.326.81992194.3817962.755.2241.320.46.910.3433.336.30292194.3817962.757.0721.4850.4510.512.8423.345.53492194.3817962.758.871.8150.5516.113.1714.5558.22474781.9417003.413.2393.30.72543.6916.57表2-17各层中柱端弯矩及剪力计算层次`中柱/m/KN(N/mm)yhy53.316.6292194.3828134.445.0691.320.46.6910.0443.326.81992194.3828134.448.181.4850.4512.1514.8533.336.30292194.3828134.4411.0721.4850.4516.4420.123.345.53492194.3828134.4413.8881.650.522.9222.9214.5558.22474781.9420387.5715.8732.9580.6546.9518.33(2)梁端弯矩、剪力、柱轴力计算梁端弯矩可按节点弯矩平衡条件,将节点上、下端弯矩之和按左、右梁线刚度比例分配。82 节点左侧梁端弯矩:节点右侧梁端弯矩:梁端剪力可根据梁的左、右端弯矩,按下式计算:表2-18梁端弯矩、剪力及柱轴力计算层次边横梁中横梁柱轴力MblMbrLVbMblMbrLVb边柱N中柱N57.686.706.92.085.065.062.73.75-2.84-2.21414.0812.276.93.829.279.272.76.87-6.66-5.26319.7418.386.95.5213.8713.872.710.27-12.18-10.01223.6722.436.96.6816.9316.932.712.54-18.86-15.87132.6723.506.98.1417.7517.752.713.15-27.00-20.88(五)竖向荷载作用下框架结构内力计算1.计算单元取⑨轴横向框架进行计算,计算单元宽度为7.8m,如图所示。由于房间内布置有次梁,且为现浇楼盖,故直接传给该框架的楼面荷载如图中的水平阴影所示。计算单元范围内的其余楼面荷载则通过次梁和纵向框架梁以集中力的形式传给横向框架,作用于各节点上。由于纵向框架梁的中心线与柱的中心线不重合,所以在框架节点上还作用有集中力矩的作用。82 图2-9计算单元2.荷载计算(1)恒载计算图2-10恒载作用下梁荷载分布①屋面框架梁线荷载标准值:屋面恒荷载标准值:边横梁自重:中横梁自重:则作用在顶层框架梁上的线荷载为:,82 ,为屋面板传给横梁的梯形荷载和三角形荷载。②楼面框架梁线荷载标准值:楼面恒荷载标准值:边横梁自重:中横梁自重:边跨横墙自重:则作用在中间各层框架梁上的线荷载为:,,为屋面板传给横梁的梯形荷载和三角形荷载。③屋面框架节点集中荷载标准值边纵梁自重:次梁自重:女儿墙自重:屋面自重:顶层边节点集中荷载:中纵梁自重:次梁自重:屋面自重:顶层中间节点集中荷载:④楼面框架节点集中荷载标准值a.五层边节点:边纵梁自重:次梁自重:墙自重:门窗自重:框架柱自重:楼面自重:82 五层边节点集中荷载:五层中节点:边纵梁自重:次梁自重:墙自重:框架柱自重:楼面自重:五层中节点集中荷载:b.二~四层边节点:边纵梁自重:次梁自重:墙自重:门窗自重:框架柱自重:楼面自重:二~四层边节点集中荷载:二~四层中节点:边纵梁自重:次梁自重:墙自重:门窗自重:框架柱自重:楼面自重:二~四层中节点集中荷载:c.一层边节点:边纵梁自重:次梁自重:墙自重:门窗自重:82 框架柱自重:楼面自重:一层边节点集中荷载:一层中节点:边纵梁自重:次梁自重:墙自重:门窗自重:框架柱自重:楼面自重:一层中节点集中荷载:⑤各层集中荷载作用下集中力矩的计算顶层:第五层:第四层:第三层:第二层:第一层:(2)活载计算图2-12活载作用下梁荷载分布①屋面框架梁线荷载标准值:屋面活荷载标准值:82 边横梁均布活荷载:中横梁均布活荷载:②楼面框架梁线荷载标准值:六层活荷载标准值:(边跨)(中跨)边横梁均布活荷载:中横梁均布活荷载:一~五层活荷载标准值:(边跨)(中跨)边横梁均布活荷载:中横梁均布活荷载:③楼面框架节点集中荷载标准值a.顶层边节点:顶层中节点:b.五层边节点:五层中节点:c.一~四层边节点:一~四层中节点:④各层集中荷载作用下集中力矩的计算顶层:第五层:第四层:第三层:第二层:第一层:82 3.内力计算(1)计算方法竖向荷载作用下内力计算采用弯矩二次分配法。(2)计算步骤①根据各杆件的线刚度计算各节点分配系数,并计算竖向荷载作用下各跨梁的固端弯矩。②分配固端弯矩得到不平衡弯矩,并对所有不平衡弯矩同时进行第一次分配。③将所有杆端分配的弯矩同时向远端传递(传递系数均取1/2)。④对不平衡弯矩进行二次分配,使各节点处于平衡状态。至此,整个弯矩分配和传递结束。⑤将各杆件的固端弯矩、分配弯矩和传递弯矩叠加,得到各杆端弯矩。(3)等效荷载的转化三角形荷载转化为均布荷载:梯形荷载转化为均布荷载:,分别为长短跨的计算跨度。表2-19转化的等效均布荷载层次g1g1"g2g2"q1"q2"g边g中q边q中53.9414.142.638.6410.103.3818.0811.2710.103.381~46.9114.142.638.646.733.3821.0511.276.733.38(4)计算固端弯矩表2-20各层框架梁的固端弯矩层次恒载作用下活载作用下5-71.7371.73-6.856.85-40.0740.07-2.052.051~4-83.5183.51-6.856.85-26.7026.70-2.052.05(5)弯矩分配的计算82 ①恒载作用下力矩分配:图2-14恒载作用下弯矩二次分配82 ②活载作用下力矩分配:82 图2-15活载作用下弯矩二次分配梁跨中弯矩:梁跨中弯矩按下式计算:表2-21梁跨中弯矩层次恒载活载534.903.4722.79-0.92444.381.0813.010.82344.381.0813.010.82243.751.5013.770.60146.63-0.7914.20-0.09该榀框架的恒载及活载弯矩图如下图所示:82 图2-16竖向恒载作用下弯矩图图2-17竖向活载作用下弯矩图(6)梁端剪力及柱端轴力计算计算公式:表2-22恒载作用下梁端剪力及柱端轴力的计算层次梁端剪力柱端轴力AB跨BC跨A柱B柱5108.83-59.2533.70282.59315.26313.13345.8082 496.07-49.1722.02867.52900.19942.65975.32396.07-49.1722.021162.281194.951261.491294.16296.25-48.9921.711457.221489.891579.841612.51195.41-49.8323.401751.321783.991900.721933.39表2-23活载作用下梁端剪力及柱端轴力的计算层次梁端剪力柱端轴力AB跨BC跨A柱B柱==57.96-3.641.1616.5917.78431.06-15.3813.3384.6980.79331.06-15.3813.33115.75109.50230.84-15.6013.50146.59138.60130.71-15.7314.01177.30168.34该榀框架的恒载、活载剪力图及轴力图如下图所示:图2-18竖向恒载作用下剪力图82 图2-19竖向活载作用下剪力图82 图2-20竖向恒载作用下轴力图图2-21竖向活载作用下轴力图(六)内力组合1.确定控制截面根据内力计算结果,可进行内力组合。控制截面取梁端柱边及跨中。2.梁截面最不利组合梁端截面:82 梁跨中截面:柱端最不利内力:及相应的N和V,及相应的N和V,及相应的M和V,及相应的M和V。3.荷载组合(1)荷载基本组合的效应设计值按下式确定:1.由可变荷载效应控制的组合。2.由永久荷载效应控制的组合。3.由竖向荷载与水平地震作用下的组合。(2)弯矩调幅为了减少支座处负钢筋的数量,方便钢筋绑扎与混凝土振捣,同时为了充分利用钢筋,以达到节约钢筋的目的,在内力组合前将竖向荷载作用下对支座处梁端负弯矩进行调幅,调幅系数为。调整后的结构内力必须满足静力平衡条件,即按照下式计算:表2-24恒载作用下梁端弯矩调幅梁类型层号轴线处梁端弯矩(kN·m)跨中弯矩(kN·m)调幅后梁端弯矩(kN·m)(kN·m)调幅后跨中弯矩(kN·m)左右左右C~D跨5-70.3775.0234.90-63.3367.5244.3244.324-79.2082.5944.38-71.2874.3354.9854.983-79.2082.5944.38-71.2874.3354.9854.982-79.7683.2843.75-71.7874.9554.8654.861-76.6380.6546.63-68.9772.5957.0057.005-6.806.803.47-6.126.124.364.36B~C跨4-9.199.191.08-8.278.272.212.213-9.199.191.08-8.278.272.212.212-8.778.771.50-7.897.892.592.591-11.0611.06-0.79-9.959.950.530.535-75.0270.3734.90-67.5263.3344.3244.3282 4-82.5979.2044.38-74.3371.2854.9854.98A~B跨3-82.5979.2044.38-74.3371.2854.9854.982-83.2879.7643.75-74.9571.7854.8654.861-80.6576.6346.63-72.5968.9757.0057.00注:梁端弯矩以顺时针为正,跨中弯矩以使梁上表面受拉为正。表2-25活载作用下梁端弯矩调幅梁类型层号轴线处梁端弯矩(kN·m)跨中弯矩(kN·m)调幅后梁端弯矩(kN·m)(kN·m)调幅后跨中弯矩(kN·m)左右左右C~D跨5-37.3637.2722.79-33.6233.5427.7327.734-24.3429.7513.01-21.9126.7816.5116.513-24.3429.7513.01-21.9126.7816.5116.512-24.0528.5113.77-21.6525.6617.1917.191-22.8928.8114.20-20.6025.9317.5517.55B~C跨5-4.004.00-0.92-3.603.60-0.45-0.454-2.262.260.82-2.032.031.111.113-2.262.260.82-2.032.031.111.112-2.482.480.60-2.232.230.910.911-3.173.17-0.09-2.852.850.290.295-37.2737.3622.79-33.5433.6227.7327.73A~B跨4-29.7524.3413.01-26.7821.9116.5116.513-29.7524.3413.01-26.7821.9116.5116.512-28.5124.0513.77-25.6621.6517.1917.191-28.8122.8914.20-25.9320.6017.5517.55注:梁端弯矩以顺时针为正,跨中弯矩以使梁上表面受拉为正。(3)内力组合82 表2-26横向框架梁内力组合层次杆件截面内力荷载种类内力荷载恒载①活载②地震③地震③风载④1.35①+0.7*1.4②1.2①+1.4④+0.7*1.4②1.2①+1.4②+0.6*1.4④1.2*(①+0.5②)+1.3③1.2*(①+0.5②)+1.3③左右左右五层AB梁左端M-77.66-6.8153.51-53.512.93-111.5148-95.7638-100.2648-27.715-166.841V108.837.96-13.8113.81-0.76154.7213137.3328141.1016117.419153.325跨中M70.93.495.81-5.810.3299.135288.948290.234894.72779.621梁右端M76.36.641.79-41.792.28109.473101.22102.7152149.84741.193V-59.25-3.64-13.8113.81-0.76-83.5547-75.7312-76.8344-91.237-55.331BC梁左端M-16.16-0.0431.53-31.531.76-21.8552-16.9672-17.969621.573-60.405V33.71.16-23.3623.36-1.346.631839.756840.97210.76871.504跨中M-2.110.75000-2.1135-1.797-1.482-2.082-2.082梁右端M16.160.0431.53-31.531.7621.855221.895220.926460.405-21.573V-33.7-1.16-23.3623.36-1.3-46.6318-43.3968-43.156-71.504-10.768CD梁左端M-76.3-6.641.79-41.792.28-109.473-94.836-98.8848-41.193-149.847V59.253.64-13.8113.810.7683.554775.731276.834455.33191.237跨中M70.93.49-5.815.81-0.3299.135288.052289.697279.62194.727梁右端M77.666.8153.51-53.512.93111.5148103.9678105.1872166.84127.715V-108.83-7.96-13.8113.810.76-154.7213-137.3328-141.1016-153.325-117.419V41.3124.03-28.0928.09-2.0879.317970.209481.466827.473100.507跨中M44.3227.73-5.625.62-0.587.007479.659491.58662.51677.128梁右端M67.5233.54102.48-102.487.68124.0212124.6452134.4312234.372-32.076V-83.45-45.67-28.0928.09-2.08-157.4141-147.8086-165.8252-164.059-91.02582 AB梁左端M-82.59-26.78163.89-163.8914.08-137.7409-105.6404-124.772897.881-328.233V96.0731.06-44.5944.59-3.82160.1333140.3748155.559275.953191.887跨中M54.9816.5110.24-10.240.9290.402883.443889.862889.19462.57梁右端M79.221.91143.8-143.812.27128.3918133.6898136.0208295.126-78.754V-49.17-15.38-44.5944.59-3.82-81.4519-79.4244-83.7448-126.199-10.265BC梁左端M-8.27-2.03108.48-108.489.27-13.15391.0646-4.9792129.882-152.166V22.0213.33-80.3680.36-6.8742.790429.869439.3152-70.046138.89跨中M2.211.110004.07133.73984.2063.3183.318梁右端M8.272.03108.48-108.489.2713.153924.891420.5528152.166-129.882V-22.02-13.33-80.3680.36-6.87-42.7904-49.1054-50.8568-138.8970.046CD梁左端M-71.28-21.91143.8-143.812.27-117.6998-89.8298-105.903288.258-285.622V49.1715.38-44.5944.59-3.8281.451968.728477.327210.265126.199跨中M54.9816.51-10.2410.24-0.9290.402880.867888.317262.5789.194梁右端M74.3326.78163.89-163.8914.08126.5899135.1524138.5152318.321-107.793V-96.07-31.06-44.5944.59-3.82-160.1333-151.0708-161.9768-191.887-75.953三层AB梁左端M-82.59-26.78207.31-207.3119.74-137.7409-97.7164-120.0184154.327-384.679V96.0731.06-58.1258.12-5.52160.1333137.9948154.131258.364209.476跨中M54.9816.5112.96-12.960.6690.402883.079889.644492.7359.034梁右端M79.221.91193.7-193.718.38128.3918142.2438141.1532359.996-143.624V-49.17-15.38-58.1258.12-5.52-81.4519-81.8044-85.1728-143.7887.324BC梁左端M-9.19-2.03146.12-146.1213.87-14.39596.4006-2.2192177.71-202.202V22.0213.33-108.24108.24-10.2742.790425.109436.4592-106.29175.134跨中M2.211.110004.07133.73984.2063.3183.318梁右端M9.192.03146.12-146.1213.8714.395932.435425.5208202.202-177.7182 V-22.02-13.33-108.24108.24-10.27-42.7904-53.8654-53.7128-175.134106.29CD梁左端M-71.28-21.91193.7-193.718.38-117.6998-81.2758-100.7708153.128-350.492V49.1715.38-58.1258.12-5.5281.451966.348475.8992-7.324143.788跨中M54.9816.51-12.9612.96-0.6690.402881.231888.535659.03492.73梁右端M74.3326.78207.31-207.3119.74126.5899143.0764143.2696374.767-164.239V-96.07-31.06-58.1258.12-5.52-160.1333-153.4508-163.4048-209.476-58.364二层AB梁左端M-83.28-25.66226.5-226.523.67-137.5748-91.9448-115.9772179.118-409.782V96.2530.84-63.8663.86-6.68160.1607136.3712153.064850.986217.022跨中M54.8617.196.38-6.380.690.907283.518290.40284.4467.852梁右端M79.7621.65214.13-214.1322.43128.893148.331144.8632387.071-169.667V-48.99-15.06-63.8663.86-6.68-80.8953-82.8988-85.4832-150.84215.194BC梁左端M-7.89-2.23161.53-161.5316.93-12.836912.04861.6312199.183-220.795V21.7113.5-119.65119.65-12.5442.538521.72634.4184-121.393189.697跨中M2.590.910004.38833.99984.3823.6543.654梁右端M7.892.23161.53-161.5316.9312.836935.355426.8112220.795-199.183V-21.71-13.5-119.65119.65-12.54-42.5385-56.838-55.4856-189.697121.393CD梁左端M-71.78-21.65214.13-214.1322.43-118.12-75.951-97.6048179.243-377.495V48.9915.6-63.8663.86-6.6881.424564.72475.0168-14.87151.166跨中M54.8617.19-6.386.38-0.690.907281.838289.39467.85284.44梁右端M74.9525.66226.5-226.523.67126.3293148.2248145.7468399.786-189.114V-96.25-30.84-63.8663.86-6.68-160.1607-155.0752-164.2872-217.022-50.986一层AB梁左端M-80.65-25.93232.07-232.0732.67-134.2889-76.4534-105.6392189.353-414.029V95.4130.71-61.6561.65-8.14158.8993133.1918150.648452.773213.063跨中M5717.5519.13-19.134.5694.14991.98396.8004103.79954.06182 梁右端M76.6320.6193.32-193.3223.5123.6385145.044140.536355.632-147V-49.83-15.73-61.6561.65-8.14-82.6859-86.6074-88.6556-149.37910.911BC梁左端M-9.95-2.85145.83-145.8317.75-16.225510.117-1.02175.929-203.229V23.414.01-108.02108.02-13.1545.319823.399836.648-103.94176.912跨中M0.530.290000.99970.92021.0420.810.81梁右端M9.952.85145.83-145.8317.7516.225539.58330.84203.229-175.929V-23.4-14.01-108.82108.82-13.15-45.3198-60.2198-58.74-177.952104.98CD梁左端M-68.97-20.6193.32-193.3223.5-113.2975-70.052-91.864156.192-346.44V49.8315.73-61.6561.65-8.1482.685963.815474.9804-10.911149.379跨中M5717.55-19.1319.13-4.5694.14979.21589.139654.061103.799梁右端M72.5925.93232.07-232.0732.67123.4079158.2574150.8528404.357-199.025V-95.41-30.71-61.6561.65-8.14-158.8993-155.9838-164.3236-213.063-52.773表2-27横向框架柱内力组合层次杆件截面内力荷载种类内力荷载恒载①活载②地震③风载④1.35①+0.7*1.4②1.2①+1.4④+0.7*1.4②1.2①+1.4②+0.6*1.4④1.2*(①+0.5②)+1.3③左右左右五层A柱上端M60.236.2853.51-53.512.9387.464982.532483.5292145.6076.481N282.5916.5913.81-13.810.76397.7547356.4302362.9724367.015331.109下端M29.0216.0313.38-13.380.7354.886451.555457.879261.83627.048N315.2616.5913.81-13.810.76441.8592395.6342402.1764406.219370.313V-27.05-6.7620.27-20.271.108-43.1423-37.5336-40.99328-10.165-62.867B柱上端M-66.84-7.2973.32-73.324.01-97.3782-81.7382-87.045610.734-179.898N313.1317.789.55-9.550.54440.1499393.9364401.1016398.839374.00982 下端M-37.55-15.331.42-31.421.72-65.6865-57.646-65.0352-13.394-95.086N345.817.789.55-9.550.54484.2544433.1404440.3056438.043413.213V31.636.8531.74-31.741.73549.413547.09849.003483.3280.804四层A柱上端M27.753.72115.91-115.9110.3441.108151.421647.1936186.215-115.151N867.5284.6986.49-86.496.661254.14821133.34421165.18441204.275979.401下端M25.043.6677.27-77.276.937.390843.294840.968132.695-68.207N900.1984.6986.49-86.496.661298.25271172.54821204.38841243.4791018.605V-16-2.2458.54-58.545.224-23.7952-14.0816-17.9478455.558-96.646B柱上端M-36.1-9.81166.4-166.414.85-58.3488-32.1438-44.58167.114-265.526N942.6580.7968.27-68.275.261351.75171217.71821248.70441268.4051090.903下端M-33.92-12.28136.14-136.1412.15-57.8264-35.7284-47.69128.91-225.054N975.3280.7968.27-68.275.261395.85621256.92221287.90841307.6091130.107V-21.226.6991.68-91.688.18-22.0908-7.4558-9.226897.734-140.634三层A柱上端M27.753.72130.04-130.0412.8441.108154.921649.2936204.584-133.52N1162.28115.75144.61-144.6112.181682.5131525.2231567.01721652.1791276.193下端M25.040.6106.4-106.410.534.39245.33639.708168.728-107.912N1194.95115.75144.61-144.6112.181726.61751564.4271606.22121691.3831315.397V-16.29-1.3171.65-71.657.072-23.2753-10.931-15.4415272.811-113.479B柱上端M-36.1-9.81203.68-203.6820.1-58.3488-24.7938-40.17215.578-313.99N1261.49109.5118.39-118.3910.011810.32151635.1121675.49641733.3951425.581下端M-34.69-10.53166.65-166.6516.44-57.1509-28.9314-42.5604168.699-264.591N1294.16109.5118.39-118.3910.011854.4261674.3161714.70041772.5991464.785V21.456.16112.22-112.2211.07234.994347.277643.66448175.322-116.45上端M27.470.69120.1-120.113.1737.760752.078244.9928189.508-122.75282 二层A柱N1457.22146.59208.47-208.4718.862110.90521918.72621969.73242107.6291565.607下端M34.20.84146.8-146.816.146.993264.403255.74232.384-149.296N1489.89146.59208.47-208.4718.862155.00971957.93022008.93642146.8331604.811V-18.69-0.4680.88-80.888.87-25.6823-10.4608-15.621282.44-127.848B柱上端M-36.3-11.05209.01-209.0122.92-59.834-22.301-39.7772221.523-321.903N1579.84138.6174.18-174.1815.872268.6122053.8542103.17882205.4021752.534下端M-43.96-10.35209.01-209.0122.92-69.489-30.807-47.9892212.751-330.675N1612.51138.6174.18-174.1815.872312.71652093.0582142.38282244.6061791.738V24.327.39126.67-126.6713.88840.074255.869451.19592198.289-131.053一层A柱上端M16.650.1485.27-85.2716.5722.614743.315234.0948130.915-90.787N1751.32177.3270.12-270.12272538.0362313.1382372.4842559.121856.808下端M8.330.07224.9-224.943.6911.314171.230646.7936302.408-282.332N1783.99177.3270.12-270.12272582.14052352.3422411.6882598.3241896.012V-5.49-0.0668.15-68.1513.239-7.470311.88784.4487681.971-95.219B柱上端M-21.61-6.38130.14-130.1418.33-35.4259-6.5224-19.4668139.422-198.942N1900.72168.34220.55-220.5520.882730.94522475.06922534.07922668.5832095.153下端M-10.81-3.19241.73-241.7346.95-17.719749.631822299.363-329.135N1933.39168.34220.55-220.5520.882775.04972514.27322573.28322707.7872134.357V7.132.181.72-81.7215.87311.683532.836224.82932116.052-96.42(4)梁端弯矩控制值。梁的支座柱支撑宽度的影响,边缘截面的弯矩,即:82 式中:为梁内力组合表中支座轴线处弯矩值。V为相应的支座剪力。B为相应的柱的宽度。表2-28弯矩调整后横向框架梁内力组合层次杆件截面荷载种类内力荷载恒载①活载②地震③风载④1.35①+0.7*1.4②1.2①+1.4④+0.7*1.4②1.2①+1.4②+0.6*1.4④1.2*(①+0.5②)+1.3③左右左右五层AB梁左端-45.01-4.4249.37-49.372.7-65.0951-54.5636-57.9327.517-120.845梁右端58.535.5137.65-37.652.0584.415378.505879.672122.48724.597BC梁左端-6.05-0.3124.52-24.521.37-8.4713-5.6458-6.543224.43-39.322梁右端6.050.3124.52-24.521.378.47139.48188.844839.322-24.43CD梁左端-58.53-5.5137.65-37.652.05-84.4153-72.7658-76.228-24.597-122.487梁右端45.014.4249.37-49.372.765.095162.123662.468120.845-7.517四层AB梁左端-53.77-17.46150.51-150.5112.93-89.7003-63.5328-78.1068120.663-270.663梁右端64.4517.3130.42-130.4211.12103.9615109.862110.9008257.266-81.826BC梁左端-1.66-284.37-84.377.21-4.2016.1421.2644106.489-112.873梁右端1.66284.37-84.377.214.20114.04610.8484112.873-106.489CD梁左端-64.45-17.3130.42-130.4211.12-103.9615-78.726-92.219281.826-257.266梁右端53.7717.46150.51-150.5112.9389.700399.736899.8292270.663-120.663三层AB梁左端-53.77-17.46189.87-189.8718.08-89.7003-56.3228-73.7808171.831-321.831梁右端64.4517.3176.26-176.2616.72103.9615117.702115.6048316.858-141.41882 BC梁左端-1.66-2113.65-113.6510.79-4.20111.1544.2716144.553-150.937梁右端1.662113.65-113.6510.794.20119.05813.8556150.937-144.553CD梁左端-64.45-17.3176.26-176.2616.72-103.9615-70.886-87.5152141.418-316.858梁右端53.7717.46189.87-189.8718.0889.7003106.9468104.1552321.831-171.831二层AB梁左端-54.41-16.41207.34-207.3421.67-89.5353-51.0358-70.0632194.404-344.68梁右端65.0617.13194.97-194.9720.43104.6184123.4614119.2152341.811-165.111BC梁左端-1.38-1.82125.64-125.6413.17-3.646614.99846.8588160.584-166.08梁右端1.381.82125.64-125.6413.173.646621.877615.2668166.08-160.584CD梁左端-65.06-17.13194.97-194.9720.43-104.6184-66.2574-84.8928165.111-341.811梁右端54.4116.41194.97-194.9720.4389.5353109.9758105.4272328.599-178.323一层AB梁左端-52.03-16.72213.58-213.5830.23-86.6261-36.4996-60.4508205.186-350.122梁右端61.6815.88174.83-174.8321.0698.8304119.0624113.9384310.823-143.735BC梁左端-2.93-1.35113.42-113.4213.81-5.278514.4956.1944143.12-151.772梁右端2.931.35113.42-113.4213.815.278524.17317.0064151.772-143.12CD梁左端-61.68-15.88174.83-174.8321.06-98.8304-60.0944-78.5576143.735-310.823梁右端52.0316.72213.58-213.5830.2386.6261121.1436111.2372350.122-205.186(5)梁端截面组合的剪力设计值调整。为防止梁剪切破坏,既保证“”截面设计须对地震作用的设计值调整。公式如下:82 式中:为梁的净距。为梁的重力表值。分别为净截面,逆时针方向矩设计值。为梁端剪力增大系数,对三级框架取1.1。表2-29梁端剪力设计值调整表杆件层次AB550.373193.2056.324.9389218.0810.187.4314112.37034120.663257.2666.323.8513221.056.7392.2887116.143171.831316.8586.325.3221721.056.7392.2887117.61092194.404341.8116.325.7377321.056.7392.2887118.02641205.186310.8236.318.4445621.056.7392.2887110.7333BC569.13370.2012.10.55942911.273.3816.329616.889034106.489112.8732.13.34411.273.3816.329619.67363144.553150.9372.13.34411.273.3816.329619.67362160.584166.082.12.87885711.273.3816.329619.208461143.12151.7722.14.53211.273.3816.329620.8616CD522.361194.1576.329.9961318.0810.187.4314117.4275481.826270.6636.332.9715421.056.7392.2887125.26023141.418321.8316.331.5006821.056.7392.2887123.789482 2165.111328.5996.328.5455221.056.7392.2887120.83421143.735350.1226.336.0358321.056.7392.2887128.324582 表2-30柱最不利组合层次杆件截面内力最不利组合五层A柱上端M141.89433.427340.9088N773.96825.7834743.8454下端M94.61837.390838.8708N813.164869.8879783.0494B柱上端M125.412-52.816-34.857N822.07893.1819802.7044下端M63.572-57.8264-43.3724N861.274937.2864841.9084四层A柱上端M186.21541.108151.4216N1204.2751254.1481133.344下端M132.69537.390843.2948N1243.4791298.2531172.548B柱上端M167.114-58.3488-32.1438N1268.4051351.7521217.718下端M128.91-57.8264-35.7284N1307.6091395.8561256.922三层A柱上端M204.58441.108154.9216N1652.1791682.5131525.223下端M168.72834.39245.336N1691.3831726.6181564.427B柱上端M215.578-58.3488-24.7938N1733.3951810.3221635.112下端M168.699-57.1509-28.9314N1772.5991854.4261674.316二层A柱上端M189.50837.760752.0782N2107.6292110.9051918.726下端M232.38446.993264.4032N2146.8332155.011957.93B柱上端M221.523-59.834-22.301N2205.4022268.6122053.854下端M212.751-69.489-30.807N2244.6062312.7172093.058一层A柱上端M130.915130.91543.3152N2559.122559.122313.138下端M302.408302.40871.230682 N2598.3242598.3242352.342B柱上端M139.422-35.4259-6.5224N2668.5832730.9452475.069下端M299.363-17.719749.6318N2707.7872775.052514.273(6)柱端弯矩设计值调整。框架结震设计中,应体现“”,即三级抗架节点处,柱端弯符合下列要求:式中:为节点上下柱端截面组合的弯矩设计值的和。为节点作用柱端截面组合的弯矩设计值的和。为框架矩增大系数,对框构,三级取1.3。①A柱:轴压比验算:一层:其他层:轴压比满足要求。根据公式82 ②B柱:轴压比验算:一层:其他层:轴压比满足要求。根据公式(7)柱端剪力设计值调整。为满足“”原则,三级框架剪力值应进整。即:式中:为柱端截面组合的剪力设计值。为柱剪系数,对三级可取1.2。分别为柱的上下端的弯矩设计值;柱的净高;①A柱剪力设计调整82 ②B柱剪力设计调整(七)截面配筋计算1.柱截面设计(1)底层柱:轴压比:轴压比满足要求。有效截面高度取故截面尺寸符合要求。柱同一截面分别承受正反弯矩,柱采用对称配筋。①A柱配筋:最不利组合:82 第一组:第二组:初始偏心距:判断偏心受压类型:属于小偏心受压。配筋计算:验算配筋率:按最小配筋率配筋:配筋结果:每侧配420,()。②B柱配筋:最不利组合:第一组:第二组:初始偏心距:82 判断偏心受压类型:属于小偏心受压。配筋计算:验算配筋率:按最小配筋率配筋:配筋结果:每侧配420,()③斜截面受剪承载力计算底层柱:A柱:根据规范配置箍筋:加密区:8@100(4×4复合箍)非加密区:8@200(4×4复合箍)截面受剪承载力验算:,取。82 ,取。故按照构造配筋即可满足要求。加密区间距取为100mm。B柱:根据规范配置箍筋:加密区:8@100(4×4复合箍)非加密区:8@200(4×4复合箍),取。,取。故按照构造配筋即可满足要求。加密区间距取为100mm。(2)二层:表2-31二层柱配筋A柱B柱较危险同工况设计内力计算单侧所需钢筋201.33mm2203.56mm2最小配筋单侧实配纵筋420,()420,()单侧配筋率验算截面配筋率验算纵筋间距验算s=127mm<200mms=127mm<200mm加密区箍筋配置φ8@100(4×4复合箍)φ8@100(4×4复合箍)非加密区箍筋配置φ8@200(4×4复合箍)φ8@200(4×4复合箍)截面受剪承载力按构造配置箍筋按构造配置箍筋柱头加密区范围600mm600mm82 (3)三层:表2-32三层柱配筋A柱B柱较危险同工况设计内力计算单侧所需钢筋222.02mm2230.11mm2最小配筋单侧实配纵筋420,()420,()单侧配筋率验算截面配筋率验算纵筋间距验算s=127mm<200mms=127mm<200mm加密区箍筋配置φ8@100(4×4复合箍)φ8@100(4×4复合箍)非加密区箍筋配置φ8@200(4×4复合箍)φ8@200(4×4复合箍)截面受剪承载力按构造配置箍筋按构造配置箍筋柱头加密区范围600mm600mm(4)四层:表2-33四层柱配筋A柱B柱较危险同工况设计内力计算单侧所需钢筋151.65mm2144.17mm2最小配筋单侧实配纵筋420,()420,()单侧配筋率验算截面配筋率验算纵筋间距验算s=127mm<200mms=127mm<200mm加密区箍筋配置φ8@100(4×4复合箍)φ8@100(4×4复合箍)非加密区箍筋配置φ8@200(4×4复合箍)φ8@200(4×4复合箍)截面受剪承载力按构造配置箍筋按构造配置箍筋柱头加密区范围600mm600mm(5)五层:82 表2-35五层柱配筋A柱B柱较危险同工况设计内力计算单侧所需钢筋45.89mm251.72mm2最小配筋单侧实配纵筋420,()420,()单侧配筋率验算截面配筋率验算纵筋间距验算s=127mm<200mms=127mm<200mm加密区箍筋配置φ8@100(4×4复合箍)φ8@100(4×4复合箍)非加密区箍筋配置φ8@200(4×4复合箍)φ8@200(4×4复合箍)截面受剪承载力按构造配置箍筋按构造配置箍筋柱头加密区范围600mm600mm2.梁截面设计(1)一层截面梁①AB跨截面设计跨中:弯矩设计值:,抗震调整后:。跨中按单筋T形截面设计,按照规范,T形截面梁的有效截面宽度为当梁按计算跨度考虑时:当按梁肋净距考虑时:按翼缘高度考虑时:,故不考虑。所以取。取,,。82 故为第一类T型截面梁。截面抵抗矩系数:配筋:查表可配:420()。验算:,满足最小配筋率要求。,满足抗震要求。左支座配筋:弯矩设计值:,抗震调整后:按双筋矩形截面设计。,则无法屈服。取进行配筋。查表可配:422()验算:,满足最小配筋率要求。,满足抗震要求。82 右支座配筋:弯矩设计值:,抗震调整后:按双筋矩形截面设计。,则无法屈服。取进行配筋。查表可配:422()验算:,满足最小配筋率要求。,满足抗震要求。箍筋配置:支座剪力设计值:,抗震调整后:。验算受剪截面:,截面尺寸符合要求。验算是否需要通过计算配置箍筋:由上述计算得不需要通过计算配置箍筋,需按构造配置箍筋。加密区箍筋:φ8@100双肢箍,加密区长度为900mm。非加密区箍筋:φ8@150双肢箍。加密区配筋率:非加密区配筋率:82 ,满足要求。②BC跨截面设计弯矩设计值:,抗震调整后:。跨中按单筋T形截面设计,按照规范,T形截面梁的有效截面宽度为当梁按计算跨度考虑时:当按梁肋净距考虑时:按翼缘高度考虑时:,故不考虑。所以取。取,,。故为第一类T型截面梁。截面抵抗矩系数:配筋:由于跨中弯矩较小,根据实际要求,故可选用220()。验算:,满足最小配筋率要求。,满足抗震要求。左支座配筋:弯矩设计值:,抗震调整后:82 按双筋矩形截面设计。,则无法屈服。取进行配筋。查表可配:422()验算:,满足最小配筋率要求。,满足抗震要求。箍筋配置:支座剪力设计值:,抗震调整后:。验算受剪截面:,截面尺寸符合要求。验算是否需要通过计算配置箍筋:由上述可得不需要通过计算配置箍筋,需按构造配置箍筋。加密区箍筋:φ8@100双肢箍,加密区长度为600mm。非加密区箍筋:φ8@150双肢箍。加密区配筋率:非加密区配筋率:,满足要求。(2)二层:82 表2-36二层梁截面配筋边跨梁中跨梁正弯矩设计值支座截面实配正筋420()220()跨中截面实配正筋420()220()正筋配筋率验算负弯矩设计值实配负筋422()422()负筋配筋率验算加密区箍筋配置非加密区箍筋配置φ8@100双肢箍φ8@150双肢箍φ8@100双肢箍φ8@150双肢箍加密区长度900mm600mm截面受剪承载力支座及跨中均满足支座及跨中均满足箍筋配筋率验算(3)三层:表2-37三层梁截面配筋边跨梁中跨梁正弯矩设计值支座截面实配正筋420()220()跨中截面实配正筋420()220()正筋配筋率验算负弯矩设计值实配负筋422()422()负筋配筋率验算加密区箍筋配置φ8@100双肢箍φ8@100双肢箍82 加密区长度900mm600mm非加密区箍筋配置φ8@150双肢箍φ8@150双肢箍截面受剪承载力支座及跨中均满足支座及跨中均满足箍筋配筋率验算(4)四层:表2-38四层梁截面配筋边跨梁中跨梁正弯矩设计值支座截面实配正筋420()220()跨中截面实配正筋420()220()正筋配筋率验算负弯矩设计值实配负筋422()422()负筋配筋率验算加密区箍筋配置φ8@100双肢箍φ8@100双肢箍加密区长度900mm600mm非加密区箍筋配置φ8@150双肢箍φ8@150双肢箍截面受剪承载力支座及跨中均满足支座及跨中均满足箍筋配筋率验算加密区箍筋配置φ8@100双肢箍φ8@100双肢箍加密区长度900mm600mm非加密区箍筋配置φ8@150双肢箍φ8@150双肢箍截面受剪承载力支座及跨中均满足支座及跨中均满足箍筋配筋率验算(5)五层:表2-40五层梁截面配筋边跨梁中跨梁正弯矩设计值支座截面实配正筋418()220()跨中截面实配正筋418()220()正筋配筋率验算82 负弯矩设计值实配负筋420()420()负筋配筋率验算加密区箍筋配置φ8@100双肢箍φ8@100双肢箍加密区长度900mm600mm非加密区箍筋配置φ8@150双肢箍φ8@150双肢箍截面受剪承载力支座及跨中均满足支座及跨中均满足箍筋配筋率验算3.次梁设计(1)次梁的截面尺寸为250mm×500mm,混凝土强度等级为C30,纵向受力钢筋选用HRB400,箍筋选用HPB300。次梁的计算跨度为6.9m。(2)荷载设计值五层:CL:板传来的荷载:次梁自重(加粉刷):则荷载总设计值一~四层:CL:板传来的荷载:次梁自重(加粉刷):则荷载总设计值82 (3)内力计算五层:CL:弯矩设计值:跨中支座剪力设计值:跨中支座一~四层:CL:弯矩设计值:跨中支座剪力设计值:跨中支座(4)正截面受弯承载力计算跨内按T形截面计算。翼缘宽度故跨中为第一类T形截面,可按矩形截面进行计算。次梁纵向受力钢筋最小配筋率为:与0.2%的较大值。全部次梁的正截面配筋计算过程与结果见下表2-51:82 表2-41次梁实配纵向钢筋层次截面实配钢筋5跨中100.970.01450.0146613.58205.85318支座50.490.00730.0073306.79205.853181~4跨中108.310.01560.0157659.81205.85318支座54.160.00780.0078327.80205.85318(5)斜截面受剪承载力计算验算截面尺寸:,, 截面尺寸按下式验算:故截面尺寸满足要求。故各截面按构造配置箍筋,采用8@200双肢箍。(八)屋盖楼盖及板的设计1.楼盖设计82 图2-22区格板计算简图经上述计算,应按照双向板进行计算。(1)荷载设计值:(2)计算跨度:(内跨),(3)内力计算:B区格板:查表得:周边固支,跨中弯矩系数,支座弯矩系数周边简支,A区格板:查表得:82 周边固支,跨中弯矩系数,支座弯矩系数周边简支,表2-42按弹性理论计算的弯矩值AB0.580.556.356.512.492.35-10.89-11.07-10.89-11.07-7.76-7.76-7.76-7.76(4)配筋计算:一类环境类别的板的最小混凝土保护层厚度为15mm,假定选用HPB300,直径10的钢筋。则方向截面有效高度;方向跨中截面,支座截面。设计用的弯矩因楼盖周边有梁与板整体浇筑,故所有区格的跨中弯矩及A-B,B-B支座弯矩减少80﹪。表2-43截面配筋结果A-BB-B0.03550.01720.03640.01620.06090.06190.03620.01740.03710.01630.06290.0639191.7382.94196.4977.70333.14338.4382 最小配筋率:位置(mm)m(kN·m)()配筋实有()跨中A区格方向1005.08191.738@200251A区格方向901.9982.948@200251B区格方向1005.21196.498@200251B区格方向901.8877.708@200251支座A-B1008.87333.148@125402B-B1008.71338.438@125402(5)楼道板(C区格板)按单向板计算,沿长边方向布置足够数量的构造钢筋。跨中:则根据最小配筋率要求实配8@200,。2.屋盖设计(1)荷载设计值:(2)计算跨度:(内跨),(3)内力计算:82 B区格板:查表得:周边固支,跨中弯矩系数,支座弯矩系数周边简支,A区格板:查表得:周边固支,跨中弯矩系数,支座弯矩系数周边简支,表2-44按弹性理论计算的弯矩值AB0.580.554.975.071.871.75-9.72-9.8882 -9.72-9.88-6.93-6.77-6.93-6.77(4)配筋计算:一类环境类别的板的最小混凝土保护层厚度为15mm,假定选用HPB300,直径10的钢筋。则方向截面有效高度;方向跨中截面,支座截面。设计用的弯矩因楼盖周边有梁与板整体浇筑,故所有区格的跨中弯矩及A-B,B-B支座弯矩减少80﹪。表2-45截面配筋结果A-BB-B0.02780.01290.02840.01210.05530.05440.02820.01300.02880.01220.05690.0560149.3661.97152.5358.15301.36296.59最小配筋率:位置(mm)m(kN·m)()配筋实有()跨中A区格方向1003.98149.368@200251A区格方向901.5061.978@200251B区格方向1004.06152.538@200251B区格方向901.4058.158@200251支座A-B100-7.90301.368@125402B-B100-7.78296.598@125402(5)楼道板(C区格板)按单向板计算,沿长边方向布置足够数量的构造钢筋。82 跨中:则根据最小配筋率要求实配8@200,。3.阳台悬挑板设计(1)荷载计算板上恒载:,板上活载:,板端集中活载:,墙厚:,挑板宽:,伸板宽:,伸板厚:,板斜厚:,板净厚:。①计算,则。②倾覆荷载计算倾覆力矩:③挑板根部内力计算④伸板根部内力计算82 (2)抗倾覆验算产生的抗倾覆力矩:梁自重产生的抗倾覆力矩:伸板产生的抗倾覆力矩:总的抗倾覆力矩:(3)挑板配筋计算①挑板截面尺寸验算,尺寸截面满足要求。②挑板截面负筋计算,取。受压区高度:受拉钢筋面积:查表可配:10@100。82 验算配筋率:,满足要求。③挑板分布钢筋计算查表可配:8@125(九)基础设计1.基础形式及材料选择基础形式选取柱下独立基础和双柱联合基础两种。材料:C30混凝土();主筋采用HRB400();构造钢筋采用HPB300()。基础梁设计:纵向基础梁采用,横向基础梁采用。2.A柱独立基础设计图2-23独基计算图例(1)荷载计算82 ①取起控制作用的内力组合:②基础梁传来的内力:横向基础梁:基础梁传给基础的内力:纵向基础梁:基础梁传给基础的内力:则A柱传给基础顶的内力设计值为:(2)基础底面尺寸的确定①初步确定基础底面尺寸假定基础高度,基础底面标高:。基础埋深,故需对地基承载力进行修正,查表得:,已知持力层承载力为。考虑偏心荷载作用的影响,将基础底面积初步增大20%,得:选取。,故地基承载力需要进行宽度修正。修正后的地基承载力为:82 ②验算基底压力基底竖向压力:基底总力矩:基底平均压力:,满足要求。偏心矩:,满足要求。基底最大压力:,满足要求。基底最小压力:,满足要求。该基础下部无软弱下卧层,故无需进行软弱下卧层验算。③基础立面尺寸确定基底净反力:净偏心矩:基底最大净反力:④基础高度取基础高度。基础分两阶,下阶:。取上阶平面尺寸:。柱对基础的冲切验算:,则冲切破坏椎体的底边落在基础底面之内,用代替得:82 ,满足要求。上阶对基础的冲切验算:,满足要求。⑤基础配筋计算基础长边方向,Ⅰ-Ⅰ截面:Ⅲ-Ⅲ截面:每米宽配筋:比较之下,配置12@125,.钢筋数量:实际配筋:。基础短边方向,Ⅱ-Ⅱ截面:82 Ⅳ-Ⅳ截面:每米宽配筋:比较之下,配置14@200,.钢筋数量:实际配筋:。3.B-C柱双柱联合基础设计①确定合力和合力作用点,两柱间距。由得:,则。,取。基底长度为:,此时基底压力均匀分布。②确定基础底面宽度则基础底面尺寸取。③按静定梁计算基础内力82 基础沿纵向净反力:由剪力为零的截面确定最大弯矩的截面位置,假定最大截面至基础左端的距离为x,有,有。最大负弯矩:最大正弯矩:④确定基础高度抗冲切验算,考虑沿柱全周边的冲切作用:对柱B:冲切力:破坏椎体实际底面积:上下周边平均值:由,解得方程为:。取。对柱C同样计算。⑤抗冲切验算:计算截面在冲切破坏椎体边缘处:⑥配筋计算82 纵向配筋:A.底面:每米宽配筋:配置14@110,.钢筋数量:实际配筋:。B.顶面:每米宽配筋:配置12@200,钢筋数量:实际配筋:。横向配筋:基础横向宽度为b,在柱下取一垂直于基础纵向的假想等效梁进行计算。对柱B:等效梁宽度为:等效梁底面面积:基底净压力为:柱截面弯矩:横向钢筋面积:每米宽配筋:配置10@130,钢筋数量:82 实际配筋:。柱C同上配筋。(十)楼梯设计1.梯段板设计斜板厚度的确定:,取板厚。板倾斜角的正切,取1m宽板带进行算。(1)荷载计算恒载(单位KN/m):30厚水磨石面层三角形踏步重混凝土斜板重板底抹灰合计6.38活载:3.5总荷载设计值:(2)截面设计板水平计算跨度为:板跨中最大弯矩:板的有效高度为:板的配筋:经上述计算,选配,。分布钢筋每级踏步1根Φ8。82 2.平台板设计平台板厚度取80mm,取1m宽板带进行计算。(1)荷载计算恒载(单位KN/m):水磨石面层80厚混凝土板重板底抹灰合计2.99活载:3.5总荷载设计值:(2)截面设计平台板计算跨度为:板跨中最大弯矩:板的有效高度:经上述计算,选配Φ,。3.平台梁设计设平台梁截面尺寸为。(1)荷载计算平台梁自重平台梁抹灰由平台板传来的恒载由梯段板传来的恒载82 合计14.15活荷载总荷载设计值:(2)截面设计计算跨度为:平台梁跨中最大弯矩:平台梁支座处最大剪力:梁的有效高度:截面按T字型梁截面计算,则翼板宽度:判别T型截面类型:故属第一类T型截面。经上述计算,选配,。选配Φ6@200的箍筋,则斜截面受剪承载力为:,满足要求。82 参考文献[1]房屋建筑学,中国建筑工业出版社;[2]公共建筑设计原理,建筑工业出版社;[3]民用建筑设计通则(GB50352-2005)[4]宿舍建筑设计规范(JGJ36-2005)[5]建筑结构荷载规范(GB50009—2012)[6]房屋建筑制图统一标准(GB/T50001-2010)[7]建筑设计防火规范(GB50016—2014)[8]混凝土结构设计规范(GB50010—2010)[9]建筑抗震设计规范(GB50011—2010)[10]建筑地基基础设计规范(GB50007—2011)[11]混凝土结构施工图平面整体表示方法制图规则和构造详图(11G-101)82 82'