碾压混凝土坝施工期徐变温度应力场快速仿真技术  

Fast Simulation Technology of Temperature Creep Stress Field in RCC Construction Period

作　　者：朱优平[1,2] 李同春[2] 冯树荣[1] 石青春[1] 苏军安[1] 

机构地区：[1]中国水电顾问集团中南勘测设计研究院,长沙410014 [2]河海大学水利水电学院,南京210098

出　　处：《三峡大学学报（自然科学版）》2014年第3期6-9,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金面上项目资助(51079044);国家自然科学基金青年项目资助(51009056)

摘　　要：水管冷却是一种常用的混凝土温控技术,对减少坝体裂缝有重要作用.受计算机硬件水平限制,目前在微机中模拟碾压混凝土坝内的每根冷却水管存在一定困难,因此,兼顾仿真计算精度和速度,综合等效算法和精细算法的优点,提出一种碾压混凝土坝徐变温度应力场的快速仿真技术,即在坝体基础约束区用精细算法计算,而在其它区域用等效算法计算,最后通过工程实例验证其可行性和实用性.Pipe-cooling is a common temperature control measure of concrete; it has an important effect on re- ducing fractures in concrete dam. As limited by the level of computer hardware, it is difficult to simulate ever- y cooling pipe in roller-compacted-concrete （RCC） currently. Thereby, a fast simulation technology of RCC temperature creep stress field that uses fine algorithm to compute constraint district of dam base and equiva- lent algorithm to compute other district of dam, is presented. This technology integrates the advantages of e- quivalent algorithm and fine algorithm; so it has well both accuracy and speed. Finally, the feasibility and practicality of this technology has been proved by a case study.

关 键 词：碾压混凝土 施工期 温度应力 数值仿真 

分 类 号：TV315[水利工程—水工结构工程]