天花板碾压混凝土双曲拱坝运行期温度场及温度应力分析

温度控制是拱坝设计、施工与运行过程中均需重点考虑的因素。以天花板碾压混凝土双曲拱坝为例,分析坝体的实测温度变化规律、实际冬夏两季典型温度场、全年准稳定温度场和封拱温度场,并与设计温度荷载对比,计算和分析温度荷载差异对坝体应力的影响。研究成果可用于指导工程实践并为同类工程提供参考。

Analysis of Temperature Field and Temperature Stress of Tianhuaban RCC Double Curvature Arch Dam during Operation Period

Temperature control is a key factor to be considered in the design,construction and operation of arch dams.Taking Tianhuaban RCC double curvature arch dam as an example,this paper analyzes the temperature variation law of the dam body,the typical temperature field in winter and summer,the quasi-stable temperature field in the whole year and the temperature field of arch closure,and compares with the design temperature load.And then the impact of temperature load difference on the dam body stress is analyzed.The result provides a guidance to the project practice and has a certain reference for the similar projects.