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时间:2019-11-27
《混凝土结构中册_混凝土结构与砌体结构设计(第四.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、混凝土结构中册习题答案第11章11.1解:1、求支座截面出现塑性铰时的均布荷载q1首先计算支座截面极限抗弯承载力MuA:22C20混凝土查得fc=9.6N/mm,316As=603mmAsfy603300x94mmhb0fb9.62001cA1Bx94MAf(h)603300(465)75.6KNmuAsy0222ql12MuA1275.6按弹性分析:MM,q25.2kNmAuA2212l6q25.2kN/m122、计算跨中极限抗弯承载力M:216As=402mmu140230063x63m
2、m,Mu140230046552.3kNm9.62002总弯矩MMM75.652.3127.9kNm总uAu12pul8M总8127.9由M得p28.4kN/m总u228l63、若均布荷载同为pu,按弹性计算的支座弯矩22MM127.985.3kNmAe总33MAeMAu85.375.6则调幅系数0.114M85.3Ae2211.2解:As1=AsA=644mm/m,fy=210N/mm,h0=120-20=100mm644210x14.1mmh,b09.610008/10@
3、10014M644210(100)12.58kNm/mu2M2M25.2kNm/m总u8M总825.228/10@100Bp12.6kN/mAu22l141n111.3解:塑性铰线位置如图所示。B1(la)32laa4ala2lA取出一块梯形板块为隔离体,对铰支座AB取力矩平衡:2la1lalalam(la)pua232242laalalalalampupuapul2a248832424
4、mpul2ala第12章12.1解:y130.45y10.075y2y36y1y4影响线0.454.4y0.808261.6y0.267460.454.41.154.41.6yi10.0750.8080.2672.15Dmax0.9Pmaxyi0.92.151150.9247.25222.5kN189.8109.8P11522.2kNmin2Pmin22.2DD222.543kNminmaxP115max水平荷载系数0.121T0.123.9410
5、9.84.098kNk44.098T222.57.93kNmax,k115212.2解:○1计算柱顶水平集中力Wk:柱顶标高处z1.0,檐口处z1.07WWW0.80.52.10.50.61.21.070.456k1k2k1.32.10.121.070.4567.54kN○2q1kszw0B0.81.00.4562.16kN/mq0.51.00.4561.35kN/m2k○3剪力分配系数计算:Wk2.13n0.148A14.387.2q1kq2
6、kn0.369B19.510.58.40.2;10.5AB33C2.8680A3110.0085.75710.210.14839C2.96因只需相对值,故略去100B3110.210.369333HHH1u;AEICE14.382.868E41.24c20Acc33H1H1u;BE19.52.96E57.72cc11EcEc41.2457.7298.9633uuHHAB41.2457.720.417,0.583AB98.9698
7、.96○4计算约束反力RA、RB:341310.210.1483.028C0.36211A3198.96810.210.14841310.210.3693.008C0.37111B318.11810.210.369RqHC2.1610.50.3628.21kNA111ARqHC1.3510.50.3715.26kNB211BR8.215.2613.47kN○5剪力计算:ARW
8、k0.41713.477.540.41721.018.76kNBRWk0.58313.477.540.583
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