水利学报2017，Vol.48Issue(5)：551-559,567,10.DOI:10.13243/j.cnki.slxb.20161103
考虑诱导缝的碾压混凝土重力坝控裂结构温度场与温度应力数值分析
Numerical analysis of temperature field and thermal stress of the crack control structure with induced joint of RCC gravity dam
摘要
Abstract
RCC dams have similar troubles with temperature stress as CVC dams.Stress caused by high temperature will lead to uncontrollable cracks.Induced joints can guide the crack growth to the dam zones with protective measures,and reduce the damage of temperature cracks.Aiming at the problem of temperature cracks in RCC dams,a valid solution has been put forward,considering cracks control structure with induced joints and the prepared High-fluidity Impermeable and Anti-cracking Concrete (HIAC).The FEM model of the studied RCC dam was built with the designed HIAC layer and induced joint,and the numerical simulations of the temperature field and thermal stress were carried through during the construction process.According to the time-space evaluations of the thermal stress near the upstream part of the dam,the initial scheme was optimized with the effective positions and lengths of the induced joints.It could ensure the better effects of stress releasing,reasonable induced joints and convenient construction procedures,and would bring in a better solution to the problem of temperature cracks in RCC dams.关键词
碾压混凝土重力坝/高流动防渗抗裂混凝土/诱导缝/控裂结构/温度应力/数值模拟Key words
RCC gravity dam/high-fluidity impermeable and anti-cracking concrete/induced joint/crack control structure/thermal stress/numerical simulation分类
建筑与水利引用本文复制引用
李明超,张梦溪,王孜越..考虑诱导缝的碾压混凝土重力坝控裂结构温度场与温度应力数值分析[J].水利学报,2017,48(5):551-559,567,10.基金项目
国家重点基础研究发展(973)计划(2013CB035903) （973）
国家优秀青年科学基金(51622904) （51622904）
