某混凝土渡槽结构水化热仿真分析  

Simulation analysis of hydration heat for a concrete aqueduct

作　　者：张永存[1] 李青宁[2] 

机构地区：[1]河南城建学院交通运输工程学院,河南平顶山467036 [2]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《混凝土》2015年第4期9-13,共5页Concrete

基　　金：国家自然科学基金项目(51308329);山西省自然科学基金项目(2013011027-1);山西省交通厅科技项目(2013-1-10)

摘　　要：结合工程实际进行了水化热仿真分析,结果表明,通过采取外保(钢模外贴聚乙烯苯板对混凝土进行保温)、内降(混凝土结构内部通冷水管散热)相结合的防裂措施可以明显减小混凝土结构内的温度应力,现场实测所得混凝土各典型点的温度变化情况和仿真分析结果基本一致,说明了仿真分析结果的可信性和抗裂措施的可行性。Based on practical engineering,simulation analysis of hydration heat is taken,and the results showthat the thermal stress within the concrete structure can be significantly reduced by taking the measures which combine the external insulation（ pasting polyethylene benzene board on the outer surface of steel molds for insulating concrete） with lowering the internal temperature（ radiating through cold water pipes）. The measured temperature change of concrete typical points is approximately consistent with the simulation results,which can illustrate the credibility of the simulation results and the feasibility of the crack control measures.

关 键 词：渡槽结构 温度应力 水化热仿真分析 混凝土抗裂 温度跟踪监测 

分 类 号：TU528.01[建筑科学—建筑技术科学]