摘要
介绍了预应力混凝土斜拉桥施工过程的仿真分析方法。该方法通过引入 CR列式法考虑结构的几何非线性行为、引入温度场理论计算温度的影响、采用有限元步进法结合随龄期调整的有效模量法考虑混凝土收缩徐变的影响 ,同时收缩徐变参数及模式可以根据实际材料特性而选取。该方法与以往的方法相比分析精度更高。利用该方法开发的软件 1998年在汕头石大桥上应用 。
An emulation analysis method for construction sequences of prestressed concrete cable\|stayed bridge is presented. In the method, CR formulation is used to analyze the geometric non\|linearity of the structure. Theory of temperature field is used to calculate the temperature effect. A step\|by\|step finite element method and an age\|dependent effective modulus method are used to analyze the shrinkage and creep of concrete. The shrinkage and creep parameters and mode may be chosen according to the properties of materials. Compared with the conventional methods, the method as described in the paper is more accurate. Software developed according to the method was applied to Queshi Bridge in Shantou in 1998 and is highly appreciated by experts.
出处
《桥梁建设》
CSCD
北大核心
2000年第2期-,共4页
Bridge Construction
关键词
斜拉桥
预应力混凝土桥
收缩徐变
有限元法
仿真分析
cable\|stayed bridge, prestressed concrete bridge, shrinkage and creep, finite element method, emulation analysis
