超长混凝土结构温度应力及裂缝控制研究

Temperature Stress and Crack Control of Super-Long Concrete Structure

温度应力是超长混凝土结构设计中所要考虑的关键问题。总结了解决温度应力和裂缝控制的常用方法后,通过工程实例对比分析了"抗"与"放"两种温度应力控制方法的优劣。结果表明,添加滑动支座可以有效地降低混凝土结构中的温度应力,是裂缝控制的有效方法。

Temperature stress is the key problem in the design of super-long concrete structure. In this paper,methods of temperature stress and crack controlling are summarized,and two methods of “re-sistance”and “release”were contrasted through an engineering example. The results show that adding sliding support can effectively reduce the temperature stress, which is an effective method to control cracks.