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| Finite element simulation of a castle structure and influence of the construction procedure on the floor stress |
| CAO Zhou-Hong1,2, LIAN Ji-Jian1, LIU Xiao-Ping2 |
1. School of Civil Engineering， Tianjin University， Tianjin 300072， China；
2. School of Hydraulic Engineering， Changsha University of Science and Technology， Changsha 410004， China |
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Abstract The reason of longitudinal cracks on the lock's surface cannot be explained by conventional design methods. We brought the soil consolidation theory into the analysis of floor's stress， established a FEM simulation model according to the construction procedure of a lock， and further discussed the reason by comparing the results with that gained by the conventional design method. [JP2]Finally we draw a conclusion that the conventional design method is a transient entire method that neither considers the locks construction procedure nor considers time characteristics of the soil settling and leads to a big deviation of the floor's surface stress， and put forward a proposal that designer should apply the simulation method to compute and analyze the floor stress．
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Published: 28 August 2013
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坞式结构有限元仿真模拟及施工过程对底板受力影响分析
大型船闸底板表面经常会产生顺水流方向的纵向裂缝，常规设计方法无法解释.引入土体渗流固结理论，建立模拟船闸施工过程的有限元仿真模型，对比常规设计方法计算结果，从另一角度进一步分析底板开裂原因，认为常规设计方法是一种瞬态整体分析方法，既没有考虑船闸施工过程，也没有考虑土体沉降过程时间特性，对底板上表面应力计算存在较大偏差，建议设计时采用仿真方法进行计算分析.
关键词：
水工结构,
弹性地基梁,
有限单元法,
船闸,
底板,
裂缝
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