摘要
提出的张力补偿计算法能计算预应力空间网格结构中索的施工张力控制值 ,同时还能计算结构在张拉施工任一阶段时的杆件内力与节点变位。当采用简单的分组分批张拉施工方法时 ,每批索只要一次张拉到计算所得的施工张力控制值即可 ,当最后一批索张拉完毕 ,所有索的实际内力将达到它们各自的张力设计值。这样 ,目前通常所采用的分阶段分组分批张拉 ,逐阶段多次张力调整的施工方法将得以改善 ,张拉工作效率将大幅提高 ,施工成本大幅降低。
The proposed tensile force compensation analysis method can be used for design and construction of prestressed special structures.Using this method,the construction tensile force control values of cables can be calculated which cables were tensioned one by one in sequence during tension practice.Tensile force of each cable would be applied for once so that all the practice time,workload and cost could be reduced.Tensile forces of all cables would be meet their design values if these cables were tensioned to their practice tensile force controlled values obtained by the tensile force compensation analysis method.Furthermore,the member internal force and joint displacements of the structure during tensioning practice can be calculated easily be means of this analysis method.
出处
《土木工程学报》
EI
CSCD
北大核心
2004年第4期38-40,45,共4页
China Civil Engineering Journal
基金
教育部留学回国人员科研启动基金资助
关键词
空间网格结构
张力补偿计算法
施工全过程力学分析
space grid structure
tensile force compensation analysis method
mechanics analysis during whole process
