【摘要】 贵州岩溶地区的气候特点对于混凝土的施工及防裂是有利的,但是,对于大体积混凝土结构,采用仿真计算确定结构的抗裂安全性是必要的。当前温控防裂研究多针对大坝大体积混凝土结构,但对于大型的厂房结构,相关研究较少。以夹岩水利枢纽坝后厂房为工程实例,建立三维有限元模型,对厂房混凝土施工期的温度及温度应力进行了仿真分析,并提出了一些温控措施及建议。本文计算方法与相关结论可为类似工程的设计人员提供合理的参考和依据。更多还原

【Abstract】 The climatic characteristics of karst areas in Guizhou are favorable for the construction and crack prevention of concrete, but for mass concrete structures, it is still necessary to use simulation calculation to determine the crack resistance safety of the structures. At present, researches on temperature control and crack prevention are mostly focused on the mass concrete structure of dams, but there are few relevant researches on the large-scale powerhouse structure. Taking the powerhouse behind the dam of Jiayan water conservancy project as an example, this paper establishes a three-dimensional finite element model, simulates and analyzes the temperature and thermal stresses of the powerhouse during the construction period, and puts forward some temperature control measures and suggestions. The calculation method and relevant conclusions in this paper can provide a reasonable reference and basis for designers of similar projects.更多还原