【ansys算例】ANSYS中国用户论文集之土木建筑 (3).pdf

2004 ANSYS 中国用户论文集
大型水工预应力渡槽的温度应力分析研究
孟旭央杜好萧豫
黄河水利委员会勘测规划设计研究院 450003
[ 摘要] 南水北调中线穿黄工程渡槽属特大型工程,该渡槽采用钢筋混凝土预应力结构,单跨跨度
50m,单跨自重 ,正常运用时承受水荷载达 ,各部位应力变幅很大。由于
渡槽地处中原,年温度变化达 ℃,温度应力是渡槽结构需考虑的主要因素之一。本文研究
温度作用下该渡槽在各种工况条件下的运行情况。
[ 关键词] 水工渡槽预应力温度应力有限元分析
Thermal Stress Analysis of A Hydraulic Prestressed
Reinforced Concrete Aqueduct
Meng Xuyang Du Hao Xiao Yu
Reconnaissance Planning & Design Institute of Zhengzhou 450003
[ Abstract ] Large scale aqueduct is adopted as a optional plan for the crossing yellow river structure
of the project of transferring water from the South to the North. Prestressed reinforced
concrete structure is the best choice. The designed aqueduct span is 50m. Self-weight of the
upper part of the structure for one span is , and corresponding weight of the water
in one span . The stress in every part of the structure varies largely. As the project
is located in the area that has large temperature variation, the thermal stress produced in the
structure by the variation of the surrounding temperature is a big problem. In this paper, the
thermal stress in the aqueduct is studied for all possible conditions, and suggestions to
guarantee the safety of the aqueduct under possible large temperature variation is made.
[ Keyword ] hydraulic aqueduct; prestressed reinforced concrete; therma