中欧(法)挡土墙设计规范对比研究  

Comparative Research on the Specification of Retaining Wall between China and Europe( France)

作　　者：张东卿[1] 薛元[2] 罗强[1] 刘菀茹 王永亮 ZHANG Dongqing;XUE Yuan;LUO Qiang;LIU Wanru;WANG Yongliang(Southwest Jiaotong University,Chengdu,Sichuan 610031,China;China Railway Eryuan Engineering Group Co.Ltd,Chengdu,Sichuan 610031,China;China Railway No.2 Engineering Group Co.Ltd,Chengdu,Sichuan 610031,China)

机构地区：[1]西南交通大学,成都610031 [2]中铁二院工程集团有限责任公司,成都610031 [3]中铁二局集团有限公司,成都610031

出　　处：《铁道工程学报》2020年第2期30-34,39,共6页Journal of Railway Engineering Society

基　　金：四川省科技厅重点研发项目(2018GZ0050);中铁二院科研项目[KYY2015069(15-18)];中铁二局科研项目(2017-重点-14)。

摘　　要：研究目的:为明确中欧(法)挡土墙设计规范差异,为开展海外工程设计提供参考,本文结合算例对中欧(法)挡土墙设计规范进行了对比研究。研究结论:(1) Eurocode 7只介绍了岩土工程设计原理和设计中要考虑的主要因素,但较少涉及具体计算方法,难以直接指导实际设计,需要结合各成员国制定的补充规范使用;(2)中法挡土墙设计规范所涉及的抗滑移、抗倾覆、基底承载力、偏心距等验算内容所对应的安全度基本一致;(3)法国规范基底摩擦系数取值较高,依据法国规范进行设计时挡墙底部尺寸可适当减小;(4)在进行结构强度验算时法国规范规定的荷载分项系数取值小于铁路支挡规范,在进行裂缝宽度检算时欧洲规范规定的裂缝宽度限值高于混规,从而导致依据法国规范设计的挡墙配筋量大幅减少;(5)本文得出的结论可应用于海外岩土工程设计。Research purposes: To clarify the differences in design specifications for the retaining wall between China and Europe,based on Eurocode 7 and French specification of retaining wall,the design method was studied and compared with domestic specifications.Research conclusions:( 1) Only the design principles and the main factors to be considered are introduced in Eurocode7,while the specific calculation methods are rarely involved;It is difficult to guide directly the design, the supplementary design specifications should be therefore prepared by the member states.( 2) The safety degrees corresponding to the anti-sliding,anti-overturning,bearing capacity and eccentricity involved in codes of retaining wall are almost the same.( 3) The friction coefficient given in French specification is higher than the value given in Chinese specification,so there is optimization space for the size of the retaining wall.( 4) During the check of structural strength,the load partial coefficient given in French specification is smaller than that given in Chinese specification;during the check of crack,the limit width of crack given in French specification is higher than that given in in Chinese specification;because of these above reasons,the amount of reinforcement for retaining wall calculated according to French specification can be greatly reduced.( 5) The conclusions can be used in design of oversea geotechnical engineering.

关 键 词：EUROCODE 7 法国规范 挡土墙 设计方法 对比研究 

分 类 号：TU43[建筑科学—岩土工程]