大体积水工混凝土结构的温度应力计算与分析

Calculation and analysis of thermal stress for mass concrete of hydraulic structure

水电站的厂房结构复杂,混凝土体积较大,容易在施工期和运行期温度应力的作用下产生裂缝。利用王铁梦教授提出的大体积混凝土抗裂计算方法,在考虑干缩影响的前提下,对某航电枢纽厂房底板混凝土结构和厂房混凝土温度应力进行了计算,对高温季节和低温季节的混凝土浇筑提出了一些温控措施及建议。

The powerhouse of hydropower station has complex structure and mass concrete,so crack is liable to be seen during construction and operation periods due to thermal stress.By use of the crack resistance calculation method of mass concrete proposed by Professor WANG Tie-meng,taking into account the effect of drying shrink⁃age,the thermal stress of base slab and powerhouse concrete were calculated for a hydropower station.Temperature control measures and suggestions were put forward for concrete placement in high temperature season and low tem⁃perature season.