某大跨预应力拉索混凝土折梁有限元分析与施工  

FINITE ELEMENT ANALYSIS AND CONSTRUCTION OF A LONG SPAN PRESTRESSED CABLE BROKEN LINE CONCRETE BEAM

作　　者：贺宇龙[1] 刘航[1] 叶立寰 

机构地区：[1]北京市建筑工程研究院有限责任公司,北京100039 [2]总后勤部建筑设计研究院,北京100036

出　　处：《建筑技术》2014年第1期36-40,共5页Architecture Technology

摘　　要：通过一大跨度预应力拉索混凝土折梁的有限元建模方法,分析了其结构的内力分布规律,通过对索中施加不同的拉力值得出拉索拉力变化规律,最终确定了拉索的拉力最优取值。并对预应力拉索折梁节点处的索头布置、局部承压做法以及对施工时的索体安装和张拉要点进行了较详细的分析。This article describes the finite element modeling method of a large span prestressed cable broken line beam, analyzed the distribution of internal force of the structure. The changing law is analyzed by applying different tension on the cable and the optimal values of the tension cable are ultimately determined. Cable head arrangement in the broken line beam joints of prestressed cable and local bearing approach was introduced in detail. And the cable installed and the tension of cable was discussed in detail.

关 键 词：大跨度 预应力拉索 有限元分析 安装 张拉 

分 类 号：TU378[建筑科学—结构工程]