大体积混凝土温度场及温度应力的数值模拟  

Numerical simulation of temperature field and temperature stress of mass concrete based on ANSYS

作　　者：周希圣 方从启[2] 杨江超 刘姝宇 严丹丹[3] 黄小平[1] 卞国强 Zhou Xishen;Fang Congqi;Yang Jiangchao;Liu Shuyu;Yan Dandan;Huang Xiaoping;Bian Guoqiang(Shanghai Shentong Metro Group Co.,Ltd.,Shanghai 201103,China;Department of Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China;Shanghai Normal University,Shanghai 201418,China)

机构地区：[1]上海申通地铁集团有限公司,上海201103 [2]上海交通大学土木工程系,上海200240 [3]上海师范大学,上海201418

出　　处：《山西建筑》2023年第9期46-50,共5页Shanxi Architecture

基　　金：上海市科学技术委员会重点专项科研项目(18070502900)。

摘　　要：推导了数值模拟温度场计算理论、四种边界条件、生热率表达式以及温度应力的计算原理,利用ANSYS模拟了同种相变材料的不同配比下混凝土的温度场和应力场。结果表明,随着混凝土中相变材料掺量的增加,相变混凝土的温度变化幅度逐渐减小,这证明了相变材料抑制混凝土开裂的有效性,为大体积混凝土结构抗裂提供了一个新的优化方案。This paper derives the calculation theory of temperature field,four boundary conditions,expression of heat generation rate and calculation principle of temperature stress in the process of numerical simulation,and uses ANSYS to simulate the temperature field and stress field of concrete mixed with different phase change materials.The results show that with the increase in the amount of phase change material in concrete,the temperature change range of phase change concrete gradually decreases,which proves the effectiveness of phase change materials in inhibiting concrete cracking and provides a new way for mass concrete structures to resist cracking.

关 键 词：数值模拟 相变材料 混凝土温度场 应力场 大体积混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]