王双娇

【摘 要】为了研究大体积补偿收缩混凝土浇筑中的温度应力分布特点，以汉秀剧场的中央表演水池混凝土浇筑为原型，结合现场试验数据建立了合理的ABAQUS有限元模型。模拟结果表明水池底板开始浇筑时，最大温度发生在底板与柱子的交接处，随着时间的推移，底板产生的水化热对板下支撑的温度应力影响越来越小。水池侧壁温度表现为沿墙厚方向，中心温度高，表面温度低。有限元模拟的混凝土浇筑时间与温度曲线与试验数据吻合较好，表明本文采用的材料参数、水化热加载方式、以及有限元模型具有较好的精度，可为后续对补偿收缩混凝土浇筑温度研究提供依据。

【关键词】补偿收缩混凝土；混凝土浇筑温度；水化热；有限元模拟；

中图分类号：TU375，TU398 文献标识码：A

Finite element analysis of temperature of shrinkage-compensating concrete during construction

WANG Shuangjiao1

（Guangzhou Municipal Engineering Design & Research Institute co.ltd，5th design institute，Guangzhou，510000，China）

Abstract：In order to study the temperature stress distribution of massive shrinkage-compensating concrete during construction，Concrete casting process of Central performance pool in Wuhan theatre as the prototype，combining with the test data to establish the reasonable ABAQUS finite-element model.Simulation results show that the maximum temperature occurs in the junction of the bottom plate and a column when started.With the passage of time，the heat of hydration produced by concrete casting has less and less influence on the temperature stress of the supporting part under the plate.The temperature of the side wall of the pool is in the direction of wall thickness，with high center temperature and low surface temperature.The time and temperature curves of concrete pouring simulated by finite element method agree well with the test data.The results show that the material parameter，the way of Hydration heat to load and the finite-element model are reasonable.It can provide a basis for the subsequent research on the temperature of shrinkage-compensating concrete during construction.

Key words：Shrinkage-compensating concrete；Concrete placement temperature；Hydration heat；Finite-element simulation analysis

1、工程概况

武汉中央文化区秀场工程——紧邻六星酒店，地块呈扇形，地上为独立建筑，地下与紧邻的六星级酒店及规划中的地铁连通，外形为红灯笼造型，观眾厅大堂为三层。秀场的建筑高度约70米，总建筑面积8.6万㎡。

中央表演水池是汉秀剧场的一大亮点，总储水量达到10443.1方。其池底标高为-10.25m，池顶标高为-0.15m，池底为1.0m厚的钢筋砼抗渗楼板，平面面积约为1228平米，周边池壁为1.0m厚的钢筋砼抗渗墙体，墙体总长约287m。池壁和底板均采用C40P10补偿收缩混凝土，水池高：10.1m。池底楼板混凝土用量：1228 m3，池壁混凝土用量：2870 m3。

2、混凝土浇筑特点

本工程的水池底板、侧壁大部分为1.0m厚，属大体积混凝土。大体积砼因散热降温引起的冷缩比干缩容易引起开裂，为了控制混凝土浇筑时温度应力的产生。……