摘要
研究目的:传统加筋土挡墙存在变形不易控制等问题,在铁路领域应用较为慎重。为解决该问题,日本研发了刚性面板加筋土挡墙,至今已在铁路工程领域应用206 km,没有出现损坏或过度变形的情况,且经受住了大地震考验。因此,探究中日加筋土挡墙设计方法的差异,对完善我国加筋土挡墙设计体系具有借鉴意义。研究结论:(1)中日标准在加筋土挡墙的填土设计指标、筋材、破裂面及土压力计算、稳定性检算以及筋材构造等五个方面均存在较大差异,这五个方面的差异均会导致挡土墙筋材尺寸的设计结果不同;(2)在不考虑构造要求情况下,中国标准相较于日本标准设计的筋材尺寸偏小,结构偏于危险;在考虑构造要求情况下,中国标准相较于日本标准的筋材尺寸偏大,结构更加安全;(3)本研究结果可为国内设计人员全面了解中、日加筋土挡墙设计方法的差异提供参考。
Research purposes:There are some issues in the traditional reinforced soil retaining walls,such as the uncontrollable deformation,causing that the application is more cautious in the domestic railway industry.To solve this issue,Japan has developed the rigid face reinforced soil retaining wall,which has been applied over 206 km in railway industry without damage or excessive deformation,even withstanding major earthquakes.Therefore,exploring the differences between the design methods of reinforced soil retaining walls in China and Japan is valuable for improving China's reinforced soil retaining wall design system.Research conclusions:(1)There are significant discrepancies between Chinese and Japanese standards in all five aspects,such as the backfill design parameter,reinforcement,fracture surface and earth pressure calculation,stability check and reinforcement structure,which will lead to variations in the design of the reinforcement dimensions for reinforced soil retaining wall.(2)Without considering structural requirements,the reinforcement dimensions specified by the Chinese standard tend to be smaller,making the structure more prone to risk compared to the Japanese standard.However,when structural requirements are considered,the reinforcement dimensions in the Chinese standard are generally larger and the structure is safer.(3)The research results can provide some guidance for domestic designers to comprehensively understand the differences between Chinese and Japanese design methods for reinforced soil retaining walls.
作者
郭海强
李安洪
肖卓琦
高柏松
王智猛
GUO Haiqiang;LI Anhong;XIAO Zhuoqi;GAO Baishong;WANG Zhimeng(China Railway Eryuan Engineering Group Co.Ltd,Chengdu,Sichuan 610031,China;Southwest Jiaotong University,Chengdu,Sichuan 610031,China)
出处
《铁道工程学报》
北大核心
2025年第2期23-28,共6页
Journal of Railway Engineering Society
基金
国家重点研发计划项目(2022YFE0104600)
中国中铁股份有限公司科技研究开发计划重大课题(2022-重大-03)
西藏自治区科技计划项目(XZ202201ZY0021G)。
关键词
加筋土挡墙
设计方法
填土设计指标
土压力
稳定性
reinforced soil wall
design method
backfill design parameters
earth pressure
stability
