龙滩碾压混凝土重力坝应力和承载能力分析  

Stress and bearing capacity analysis for Longtan roller compacted concrete gravity dam

作　　者：郭绪元[1] 孙恭尧[2] 

机构地区：[1]二滩水电开发有限责任公司,成都610021 [2]国家电力公司中南勘测设计研究院,湖南长沙410014

出　　处：《河海大学学报（自然科学版）》2005年第3期282-286,共5页Journal of Hohai University(Natural Sciences)

基　　金：国家"九五"科技攻关项目(96 220 01 01)

摘　　要：针对龙滩碾压混凝土筑坝的特点,在设计研究中根据应变空间表述的弹塑性增量理论,考虑材料的软化塑性性质,用弹塑性有限元方法分析坝体的应力状态,采用稳定性理论和两种不同的材料强度储备方式,研究重力坝的承载能力.研究结果反映了因混凝土和岩石材料的损伤及软化导致重力坝系统失稳的物理机制.According to the features of RCC dam construction and softening-plastic property of materials, the stress state of the dam body was analyzed by use of the elastic-plastic finite element method based on the elastic-plastic increment theory formulated in strain space. The stability theory and two different material strength reserve modes were adopted to study the bearing capacity of the gravity dam. The research result is successful in reflection of the physical mechanism of instability of the gravity dam induced by damage and softening of concrete and rock materials.

关 键 词：碾压混凝土 重力坝 应力 承载能力 

分 类 号：TV642.2[水利工程—水利水电工程]