混凝土重力坝整体结构安全评价
Safety Evaluation of Whole Structure of Concrete Gravity Dam
张冬 1许峰 1陈一新 2陈正乐 3徐晓军4
作者信息
- 1. 浙江省水利水电勘测设计院有限责任公司,浙江 杭州 310002
- 2. 浙江省杭州市富阳区林业水利局,浙江 杭州 311400
- 3. 浙江省温州市平阳县水利局,浙江 平阳 325400
- 4. 浙江省杭州市桐庐县林业水利局,浙江 桐庐 311500
- 折叠
摘要
为了突破当前重力坝评价体系中只着眼于独立坝段而忽略整体作用的趋势,以国外某工程中的混凝土重力坝为例,建立重力坝全坝段有限元分析模型.考虑混凝土材料、地基岩体的动力非线性特性,采用接触非线性单元模拟不同坝段之间的横缝状态;通过对不同坝段坝体的位移、应力的计算和分析,研究坝体在不同荷载工况下的静动力响应、屈服特性与破坏模式,对重力坝全坝段的安全性能作出整体评价.研究采用的评价方法成果合理有效.
Abstract
In order to change the current gravity dam evaluation system which only focuses on the independent dam section and ignores the whole structure,the nonlinear finite element analysis model of the three-dimensional structure of a concrete gravity dam is established based on an actual foreign engineering project in this paper.Considering the dynamic nonlinear characteristics of concrete material and foundation rock mass,the contact nonlinear element is used to simulate the transverse joint state between different dam sections.By calculating and analyzing the displacement and stress of different dam sections,the response and failure mode of the dam under different load conditions are studied,and the safety performance of gravity dam in the whole dam sections is evaluated as a whole.The evaluation method adopted in this paper provides some reference for practical engineering,and the results are reasonable and effective.
关键词
重力坝/抗震安全评价/接触非线性/破坏模式/地震响应Key words
gravity dam/seismic safety evaluation/contact-nonlinear FEM/failure mode/seismic response引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据