上部无砌体挑梁与砌体开裂原因分析及优化方案  

Analysis and Improvement Scheme of Over Beam for No Blockwork on Top

作　　者：孙泽世[1] 李旭霞 

机构地区：[1]中国矿业大学建筑设计研究院徐州221008 [2]皖北矿务局设计处

出　　处：《基建优化》2001年第1期34-35,共2页Optimization of Capital Construction

摘　　要：上部无砌体时的挑梁 ,结构计算通常采用简支方案 ,在其根部与砌体接触面之间易出现裂缝。文章分析了裂缝出现的力学原因。并根据力学理论提出了改进办法———采用固端方案。从而大大降低了这类裂缝出现的可能性。Over beam of no blockwrok on top is generally designed according to simply support scheme,fracture easily occuring on its end and surface of contact with bolckwrok.Mechanical master sheets of fracture turn-up are analysised in the paper,and improvement scheme-fixed end scheme,is bring up by mechanical theory.Then probability of fracture is reduced greatly.

关 键 词：抗倾覆力矩 砌体结构 挑梁 裂缝 优化 

分 类 号：TU398.5[建筑科学—结构工程]