钢板混凝土组合剪力墙施工早期的温变及应力研究  

Study on temperature change and stress of steel-concrete composite shear wall in the early stage of construction

作　　者：李潘武[1] 陈兴 梁肖倩 杨亚星 门凡 LI Panwu;CHEN Xing;LIANG Xiaoqian;YANG Yaxing;MEN Fan(School of Civil Engineering,Chang′an University,Xi′an 710061,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710061

出　　处：《混凝土》2022年第2期172-176,181,共6页Concrete

基　　金：国家自然科学基金(51579013)。

摘　　要：钢板混凝土组合剪力墙由于其设计强度高、截面尺寸大、材料线膨胀系数差异大等因素,施工时开裂现象尤为突出。为了控制温度裂缝的开展,依托工程实例,引入水化度与等效龄期的概念,考虑混凝土材性随温度与时间共同作用的演变,基于ABAQUS通过二次开发编写UMATHT及UMAT子程序,更精确的求解温度应力的产生及变化规律。所得结果展示了施工期钢板混凝土组合剪力墙温度、节点位移、以及应力的发展情况,并对不同情况下裂缝的开展提供了相应建议,为钢板混凝土组合剪力墙在工程中的应用提供了借鉴意义。The steel plate concrete composite shear wall is prone to non-load cracks during the construction period due to factors such as high design strength,large section size,and large difference in material linear expansion coefficients.In order to control the development of temperature cracks,it relies on engineering examples,introduces the concepts of hydration and equivalent age,and considers the evolution of concrete material properties with the joint effect of temperature and time.Based on ABAQUS,write the UMATHT and UMAT subroutines through secondary development to explore the change law of temperature stress more precisely.The results show the development of temperature,node displacement,and stress of the steel-concrete composite shear wall during the construction period,and provide corresponding suggestions for the development of cracks under different conditions,which provides reference for the application of the steel-concrete composite shear wall in engineering.

关 键 词：钢板混凝土组合剪力墙 ABAQUS 二次开发 温度应力 开裂 

分 类 号：TU528.01[建筑科学—建筑技术科学]