摘要
文章采用MIDAS软件对拉会大桥110m薄壁空心墩施工阶段的水化热温度效应进行了有限元分析。分析结果表明,水化热作用下桥墩温度呈现先升后降的变化规律,墩壁中心最高水化热温度超过70℃,墩壁中心和外壁温度差最大在25℃左右;经过温度升降变化后,墩壁内外表面上均残余有一定的拉应力。分析结果对于结构温度裂缝的控制有参考作用。
The article uses MIDAS software to perform finite element analysis on hydration heat temperature effect during Lahui Bridge 110m thin-wall hollow pier construction period.The analysis result shows that the pier temperature goes up then goes down under hydration heat effect.The highest temperature exceed 70 ℃ in the middle of pier wall.The biggest temperature difference is 25℃.After the temperature change,the inner and outer pier wall has pulling stress.This result provides reference to cracking control.
出处
《西部交通科技》
2010年第6期80-84,108,共6页
Western China Communications Science & Technology
关键词
薄壁空心墩
水化热
温度效应
有限元分析
Thin-wall hollow pier
Hydration heat
Temperature effect
Finite element analysis
