中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2010, Vol. 29 ›› Issue (6): 919-924.

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汶川震区路肩墙抗震能力检算与震害机理分析

王景梅1,姚令侃1,2,杨明1,2   

  1. 1.西南交通大学土木工程学院,四川 成都 610031; 2.抗震工程技术四川省重点实验室道路与铁道工程抗震技术研究所,四川 成都 610031
  • 收稿日期:2010-07-26 修回日期:2010-08-25 出版日期:2010-12-15 发布日期:2015-01-22
  • 作者简介:王景梅(1987—),女,江西樟树人,硕士研究生,主要从事挡土墙抗震稳定性研究。E-mail:393924327@qq.com。
  • 基金资助:
    铁道部科技研究开发计划课题( 2008G010-A) ; 国家重点基础研究发展计划项目( 973 计划) ( 2008CB425802)

Seismic Resistance Behavior Check and Seismic Damage Mechanism Analysis of the Shoulder Retaining Wall in Wenchuan Seismic Area

WANG Jing-mei1,YAO Ling-kan1,2,YANG Ming1,2   

  1. 1.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China; 2.Anti-seismic Technique Institute of Highway and Railway Engineering,Sichuan Province Key Lab of Anti-seismic Engineering Technique,Chengdu 610031,Sichuan,China
  • Received:2010-07-26 Revised:2010-08-25 Online:2010-12-15 Published:2015-01-22

摘要: 在汶川地震路肩墙震害调查基础上,根据设计图纸,按规范对路肩墙进行抗震能力检算和震害机理分析,获 得以下结论:由于现行公路规范中有关规定表明地震工况时公路挡土墙稳定性验算不考虑车辆荷载,故按现行公 路规范要求设计的挡土墙具有抵抗8度地震的抗震能力;9度地震烈度区路肩墙倾斜变形的原因是挡墙基底应力 超过基底容许承载力值;10度地震烈度区路肩墙严重倾斜变形及出现毁坏现象的原因是抗倾覆稳定系数不满足规 范要求和挡墙基底应力远远超过基底容许承载力值,碎石土基路肩墙还有抗滑动稳定系数不足的原因;现行公路 规范中挡土墙稳定安全系数取值合理,在9度地震烈度区是适用的,并且可以延伸到10度地震烈度区。

关键词: 路肩墙, 抗震能力, 震害机理, 汶川地震

Abstract: Seismic damage of the shoulder retaining wall was investigated in Wenchuan earthquake. According to design drawing and specification,the seismic resistance behavior of the shoulder retaining wall was checked and the seismic damage mechanism was analyzed. The conclusions were as follows: firstly,relevant regulations in the current highway codes showed that the vehicle load wasn’t considered when checking the stability of highway retaining wall,therefore the retaining wall designed based on the current highway codes could resist 8 degree earthquake. Secondly,the reason of the shoulder wall’s inclination distortion in 9 degree earthquake zone was that the foundation stress went beyond the bearing capacity. Thirdly,the cause of the shoulder wall’s serious inclination distortion and collapse in 10 degree earthquake zone was that the toppling stability coefficient didn’t satisfy requirements of the codes and the foundation stress went beyond the bearing capacity. Lastly,the stability safety factors value of retaining walls in the current highway codes was reasonable; it was applicable in 9 degree earthquake intensity zone and could be extended to 10 degree earthquake intensity zone.

Key words: shoulder retaining wall, seismic resistance behavior, seismic damage mechanism, Wenchuan earthquake

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