钢筋混凝土及砌体结构课程设计钢筋混凝土及砌体结构课程设计题目:《某电站安装间楼板设计》主要任务:1.楼板设计2.主梁设计提交成果:1.楼板配筋图一张(包括钢筋表及简要说明)2.主梁配筋图一张(包括钢筋表及简要说明)3.计算说明书一份100682.535302.54003030217.53022530210302103010015247.52552402401151112.5202.5260202006060406012097.5设计步骤1.荷载计算2.荷载调整3.内力计算4.配筋计算5.画配筋图板的设计一、设计内容:某电站装配间楼板二、设计资料:根据初步成果,提出设计数据和资料如下:1、楼板梁格布置图(见图1-1);2、楼板厚20cm,水磨石地面厚度3cm(2/650mN)3、载荷:(基本载荷组合)(1)楼面活荷载2/20mKN.(2)钢筋砼容重3/25mKN4、最大裂缝宽度允许值0.25mm5、建筑材料:混凝土标号为C20;钢筋种类:(1)板内钢筋I级(HPB235)钢筋(2)梁、柱受力筋II级(HRB335)钢筋梁、柱内的钢箍I级(HPB235)钢筋6、建筑物级别III级7、规范:水工钢筋混凝土结构设计规范SL191-2008水工钢筋混凝土结构学(第四版,中国水利水电出版社)三、荷载计算(包括荷载调整)四、内力(弯矩)计算五、配筋计算:(钢筋计算面积均mm2以计)三、荷载计算1、荷载计算恒载:gk=0.2×25×1+0.65×1=5.65KN/mg=γG·gk=1.05×5.65=5.9325KN/m活载:qk=20KN/mq=20×1.2=24KN/m2、计算荷载调整g/=g+0.5q=17.9325KN/mq/=0.5q=12KN/m3、跨度计算:正截面抗弯配筋计算时,对于实心板,计算跨度l0可按下列方法取值当a0.1ln时,l0=1.1ln当a0.1ln时,l0=ln+a式中ln—板的净跨度;a—板的支撑长度四、内力(弯矩)计算第一板区112/2qqKNm117.9325/2ggqKNm1或计算弯矩值如下图所示:第二板区2111.34532gMglKNm217.5962qMqlKNm2117.9325/2ggqKNm2112/2qqKNm1或第二板区计算弯矩值如下图所示:第三四板区yxll/2/93.1721mKNqgg2/1221mKNqq0.0311-0.07450.0273-0.070525.93325.93325.93325.9332.2282.2282.2282.2283.997-9.5863.513-9.069gpxMyMl0xM0yM2)(lgpM20bhfMcds0.0316-0.07570.0273-0.070925.93325.93325.93325.9332.2002.2002.2002.2003.971-9.4953.427-8.899gpxMyMl0xM0yM2)(lgpM20bhfMcds)495.9(586.900xxMM)971.3(997.3xxMM)899.8(069.900yyMM)427.3(513.3yyMM第IV板区:第五板区:662.0/yxll693.0/yxll2/93.1721mKNqgg2/1221mKNqq第V板区按双向板计算,对于第V板区左边板,cmlx75.3321.15.302,cmly5.5022555.247,662.0/yxll,计算跨度取xl.对于第V板区右边板,cmlx75.3321.15.302,cmly480240240,693.0/yxll,计算跨度取xl.3.3283.3283.3283.3283.3283.3283.3283.3280.0377-0.07910.0140-0.05720.0368-0.07770.0149-0.057215.93315.93315.93315.93315.93315.93315.93315.9336.658-13.9492.476-10.0916.494-13.7082.629-10.0910.0399-0.08230.0125-0.05720.0393-0.08170.0133-0.057210.00010.00010.00010.00010.00010.00010.00010.0004.422-9.1141.385-6.3334.346-9.0451.475-6.33311.079-23.0633.861-16.42410.840-22.7534.104-16.424xMyM0yMxMyM0yMl1qgg21211lgM2qq21222lqM21MMM20bhfMcdsxoMxoM424.160yM079.11xM861.3yM063.230xM424.160yM753.220xM104.4yM84.10xM单位:KN·m五、配筋计算根据各板区内力计算值进行配筋计算:(如下所示)第I板区:位置1B2C3D4备注12.746-17.2658.475-12.6007.383-15.55411.8820.0500.0680.0330.0490.0290.0610.0470.0510.0700.0340.0510.0290.0630.048427.155584.222281.497422.114244.665524.369397.477175qgMMMs211ycsfhbfA0ahh020bhfMcds第II板区位置A1B2C3备注-16.4109.022-13.1287.767-15.84012.6290.0640.0350.0510.0300.0620.0490.0670.0360.0530.0310.0640.051554.284299.996440.303257.595534.341423.129175qgqgMMMMM20bhfMcdss211ycsfhbfA0ahh0第III板区0.0160.0380.0140.0360.0160.0380.0140.036131.537319.122115.501301.596xMyM0xM0yM20bhfMcdss211ycsfhbfA0第IV板区0.0160.0370.0130.0350.0160.0380.0140.035130.698316.036112.648295.818xMyM0xM0yM20bhfMcdss211ycsfhbfA0第V板区11.079-23.0633.861-16.42410.840-22.7534.104-16.4240.0430.0900.0150.0640.0420.0890.0160.0640.0440.0950.0150.0670.0430.0940.0160.067369.993790.571127.056554.756361.811779.406135.097554.756xMyM0yMxMyM0yMxoMxoM21MMM20bhfMcdss211ycsfhbfA0附加钢筋:转子轴孔周围上下侧各加配6根12的附加钢筋,并将第一和第二板区的构造钢筋由8变为12,作为加强洞口周围板的整体作用,以保证安全。同样,楼梯口的两侧上下层各配置2根12的钢筋,并在一角加配4根方向的12的构造钢筋,以保证整体安全。钢筋布置图主梁设计1、配筋计算数据:材料强度:混凝土2/0=9.6mmNfc钢筋2/=300mmNfy2/=210mmNfyv截面尺寸mmb=350mmh=700系数查表.2.γd=1.主梁荷载计算1、主梁自重和活荷载(均布荷载)2、次梁传给主梁的荷载(集中荷载)3、五区双向板传给主梁的荷载(梯形荷载)2、内力计算支座边缘截面剪力设计值:KNVA4.15481.974.150.10.1KNVlB9.26181.97.260.10.1KNVrB0.25281.969.250.10.1KNVc8.14181.945.140.10.1跨中截面最大弯矩设计值:mKNM3.31281.983.310.10.11支座截面最大弯矩设计值:mKNM6.27881.94.280.10.123、验算截面尺寸4、计算纵向钢筋纵向受拉钢筋计算表计算截面计算内容跨中截面支座B截面)(mKNM312.3278.6)(mKNMdγ374.8334.320/bhfMcdsγα0.260.23sαξ2110.310.27)(/220mmfbhfAycsξ2234.71947.5选配钢筋622622实配)(2mmAs22812281==--=..5、计算抗剪钢筋max08.=156640350107.07.0VKNbhfdtγ×××必须由计算确定抗剪腹筋。试在全梁配置双肢箍筋8@150,26.100mmAsv,mmSS250max%15.0%192.01503506.100min=×ρρbSAsvsv,满足箍筋最小配筋率要求。KNhsAfbhfVsvyvtcs47.2696401506.10021025.1640350107.025.17.000××××××====+=====+(1)支座B左侧:KNVKNγVcslB47.2693.3149.2612.=1×需要配弯起钢筋帮助抗剪:取o=45θ,并取lB=VV1计算第一排弯起钢筋231157.204707.031010)47.2699.2612.1(45sinmmfVγVAoycssb××-×-因此,由支座成担负弯矩的纵筋弯下122(211.380mmAsb),第一排弯起钢筋的上弯点安排在离支座边缘100mm,使mmSS250max1.(查表4-1)第一排弯起钢筋下弯点离支座边缘的距离为mm640+10080-2700×,该处KNVKNγVcs47.26978.29781.930.252.12××.故还需弯起第二排钢筋2sbA:232239.129707.031010)47.-26981.930.252.1(45sinmmf-VγVAoycssb××××第二排弯起钢筋只需弯下122(211.380mmAsb)即可。第二排弯起钢筋下弯点离支座边缘的距离为mm1430)80-2700(+250+640×,此处KNVKNγVcs47.26905.26481.943.222.13××.故不需要再弯起第三排钢筋。===================(2)支座B右侧:KNVKNγVcsrB47.=2694.=3020.2522.=1×故需配置弯起钢筋,又因为rBdlBVγVγ,故可同样弯下122即可满足要求,不必再进行计算。第一排弯起钢筋的下弯点距支座边缘为640mm,此处KNVKNγVcs47.=26996.=28481.921.242.=12××,故同样弯下122即可满足要求。第二排弯起钢筋下弯点离支座边缘的距离为1430mm,该处csVγV3,不必再弯起第三排弯起钢筋。(3)支座A:csAVKNγV×29.=1894.1542.=1理论上可不必配置弯起钢筋,但为了加强梁的受剪承载力,仍由跨中弯起222自梁顶再伸入支座。(4)支座C:csCVKNγV×11.=1708.1412.=1同理,为了加强梁的受剪承载力,仍由跨中弯起222自梁顶再伸入支座。6、钢筋的布置设计:钢筋的布置设计要利用RM图进行图解,先画出M图,梁的纵剖面图,再作RM图。(5)主梁与次梁交接处吊筋计算:左侧:266.=1372707.031081.9)19.-1837.7(2.145sinmmfFAoyvdsv×××γ仅配吊