有初始荷载作用轴压钢构件预应力加固分析方法研究  

ANALYSIS METHOD OF STEEL AXIAL PRESSURE MEMBER STRENGTHENED WITH PRE-STRESS UNDER INITIAL LOAD

作　　者：罗永峰[1] 张敬尧 

机构地区：[1]同济大学建筑工程系,上海200092 [2]正荣地产控股股份有限公司,上海200050

出　　处：《工业建筑》2017年第2期38-42,共5页Industrial Construction

摘　　要：对有初始荷载作用的钢压杆的预应力加固分析方法进行研究,建立相应钢压杆预应力加固有限元模型,进行数值计算以及参数分析,计算得到预应力-加固钢压杆极限承载力关系曲线,通过拟合得到有初始荷载作用的预应力加固钢压杆极限承载力的简化计算方法。经与数值模拟结果比较,误差小于5%,表明简化公式有效。The analysis method of the pre-stress strengthening steel pressure member with initial loading was investigated.The corresponding FEM model was built and numerical computations and parametric analyses were conducted.The curves of pre-stress vs ultimate load-bearing capacity of the strengthened member were obtained.After fitting the numerical data,the simplified formula for calculating the ultimate load-bearing capacity of the strengthened member was also obtained.Whose results were compared with those of the simulation,between which the error was less than 5%,showing the validity of the formula.

关 键 词：钢压杆 预应力加固 极限承载力 简化计算方法 

分 类 号：TU391[建筑科学—结构工程]