Aseismic safety research on RCC gravity dam with incised transverse joint

HUANG Yi-sheng; CHANG Xiao-lin; LI Jian-lin

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Aseismic safety research on RCC gravity dam with incised transverse joint

更新时间：2026-06-25

- Aseismic safety research on RCC gravity dam with incised transverse joint
- Vol. 29, Issue S1, (2008)
- 作者机构：
  
  1. 三峡大学土木水电学院,湖北,宜昌,443002
  2. 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU458
- Online First：15 April 2016，
  
  Published：2008
- 稿件说明：
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HUANG Yi-sheng, CHANG Xiao-lin, LI Jian-lin. Aseismic safety research on RCC gravity dam with incised transverse joint[J]. 2008, 29(S1).
DOI：

HUANG Yi-sheng, CHANG Xiao-lin, LI Jian-lin. Aseismic safety research on RCC gravity dam with incised transverse joint[J]. 2008, 29(S1). DOI：

摘要

由于切割式横缝的联接作用，切割式横缝碾压混凝土重力坝近似为一个整体结构。当遭遇强震作用时，随着切割式横缝的开裂程度不同，碾压混凝土重力坝的抗震安全性也就有所不同。针对切割式横缝的结构特点，在有限元法动力分析中，利用“生死”单元来模拟切割式横缝的联接单元和切割单元，且以整个横缝联接单元弹性模量的不同折减来模拟切割式横缝的不同开裂程度，并应用到金安桥水电站左岸坡坝段群的抗震安全性分析中。分析结果表明：金安桥水电站左岸坡坝段群在设防烈度为IX度的地震作用下，切割式横缝的开裂对左岸坡单个坝段和坝段群的抗震安全性影响不大，且大坝是安全的。这说明了金安桥水电站碾压混凝土重力坝结构设计合理，能够抵御设防地震。

Abstract

RCC gravity dam with incised transverse joint is a whole structure approximately due to joint effect of incised transverse joint. When RCC gravity dam encounters strong earthquake

aseismic safety of dam is mutative with different cracked degrees. During aseismic analysis by using FEM

considering structure characteristic of tru-cut transverse joint

joined mesh and incised mesh of incised transverse joint can be simulated by living mesh and killed mesh; and cracked degree can be equaled to discount elasticity moduli of the whole joined mesh of incised transverse joint. In the end

the aseismic safety of left bank dam monoliths of Jinanqiao Hydropower Station using above methods are analyzed. The results indicate while left bank dam monoliths of Jinaoqiao Hydropower Station encounters M9 earthquake

cracking of incised transverse joint has little influence on aseismic safety of individual dam monolith and dam monolith

and dam is safe. This indicates Jinanqiao Hydropower Station RCC gravity dam can withstand the design earthquake with the reasonable design.

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