| 李九红,何 劲,简 政,陈尧隆.水电站表孔闸墩施工期温度应力仿真分析[J].水利学报,2002,33(9):0117-0122 |
| 水电站表孔闸墩施工期温度应力仿真分析 |
| Simulation of thermal stress in piers |
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| DOI： |
| 中文关键词: 三维有限元 浮动网格法 施工期 水化热 非稳定温度场 温度应力 |
| 英文关键词: 3-D FEM floating mesh method construction schedule hydration unsteady temperature field temperature stress |
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| 中文摘要: |
| 用三维有限元浮动网格法进行了水电站表孔闸墩施工期的温度场和温度应力仿真分析，分析中考虑了混凝土的弹模、徐变度及自生体积变形等物理力学参数随龄期变化和分层浇筑对墩体温度应力的影响，提出了防止在施工过程中由于外界温度变化及混凝土水化热等因素引起表面裂缝的措施。 |
| 英文摘要: |
| The 3-D FEM floating mesh method is used to analyze the unsteady temperature field and temperature stress of the piers during construction. The variations of elastic modulus, creeping and bulk deformation related to the age of concrete and the effect of layered placement are taken into account. Measures for preventing from surface cracking caused by atmosphere temperature variation and hydration of concrete in the process of construction are proposed. |
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