预应力撑杆横向张拉量ΔH值的讨论  

Analysis on lateral stretching quantity of pre-stressed struts

作　　者：蒋华[1] 程超[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《四川建筑科学研究》2003年第4期31-32,34,共3页Sichuan Building Science

摘　　要：在对横向张拉量计算公式的简略推导和对加固施工中的误差进行分析的基础上,认为在计算横向张拉量的公式中,应充分考虑综合施工误差因素而适当加大其误差修正值;且提出焊接残余应力会造成撑杆预应力的损失,其影响应予包含于计算公式内。最后,对计算公式提出了修正意见。Based on the deduction of the formula about the lateral stretching quantity of pre-stressed struts and analysis on the construction error,considering that the revise item should be increased in formula because of the construction error,and that the pre-stress loss in struts caused by the welding residual stress should be calculated in formula also.At the end,the revise advice be given.

关 键 词：预应力撑杆 横向张拉量 焊接 残余应力 横向张拉法施工 

分 类 号：TU757.1[建筑科学—建筑技术科学]