干热河谷筑坝深槽置换混凝土裂缝成因与防裂措施研究  

Study on cracking causation and anti-cracking measures for replacing concrete in deep foundation trench for dam construction in dry-hot valley

作　　者：刘有志[1] 李仁江 陈文夫 陈培培[1] 李金桃[1] 

机构地区：[1]中国水利水电科学研究院,北京100038 [2]中国长江三峡集团总公司,湖北宜昌443000

出　　处：《水利水电技术》2012年第1期57-60,68,共5页Water Resources and Hydropower Engineering

基　　金：国家自然科学青年基金(50909105);水利部行业公益科研专项(200801007);国家科技支撑计划项目(2008BAB29B05);中国水科院科研专项基金(材集1028;材集1118)

摘　　要：结合西南地区某在建大坝工程,采用有限元反馈仿真分析方法模拟大坝基础置换块的真实温度和应力状态,从而弄清基础置换混凝土的内在开裂机理、明确不同时候的开裂风险,同时探讨避免此类置换混凝土开裂的有效温控方案和防裂措施,为类似工程的施工和防裂工作提供参考。Based on the construction of a dam in Southwest China,the actual states of temperature and stress of the replacing concrete block for the dam foundation are simulated herein with the method of the finite element feedback simulation analysis,and then the inherent cracking mechanism of the replacing concrete and the cracking risks at different time periods are revealed,simultaneously,the relevant effective temperature control schemes and anti-cracking measures to avoid the cracking of such a kind of replacing concrete are discussed as well.This study can provide a reference for the similar project in the days to come.

关 键 词：干热河谷 置换混凝土 温控 防裂 

分 类 号：TV5[水利工程—水利水电工程]