重力坝底板施工期温度应力仿真  

Simulation of Thermal Stresses Field of Bottom Plate of Gravity Dam during Construction Period

作　　者：黄养连 黄恩中 郭利霞[3] 陈守开[3] 郭磊[3] 

机构地区：[1]舟山原水管理中心,浙江舟山316021 [2]浙江省水电建筑安装有限公司,浙江杭州310051 [3]华北水利水电学院,河南郑州450011

出　　处：《华北水利水电学院学报》2011年第1期20-22,共3页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：国家自然科学基金项目(50779010)

摘　　要：运用有限单元法对施工期混凝土进行了仿真计算,分析了混凝土施工期温度场和应力场的时空变化规律,找出了基础底板裂缝容易出现的部位,为后续的温控防裂方法的研究提供了参考依据.In view of the problem of mass concrete cracks during construction in winter, the corresponding measures and methods are put forward. Generally speaking, the difference between the internal and external temperature and the basic difference of temperature are considered as the main factors influencing the phenomena. The FEM （Finite Element Method） is adopted to simulate the thermal stresses field of bottom plate of gravity dam during construction in winter. Through analyzing the time-space variation law, the place where the cracks of bottom plate easily appear is obtained. This can provide the reference for the further optimization of temperature control measures for crack orevention.

关 键 词：冬季 温控 防裂 温度场 仿真 

分 类 号：TV640.39[水利工程—水利水电工程]