高速铁路中扶壁式挡土墙设计与施工要点分析

Analysis on Key Points in Design and Construction of Buttressed Retaining Wall in High-speed Railway

扶壁式挡土墙有自重轻、结构简单、适用高填挖方路基的优势,基于土体平衡理论,对高速铁路扶壁式挡土墙的设计进行了研究,分析了扶壁式挡土墙的稳定计算要点、土压力计算要点和基底压力计算要点。分析了抗倾覆稳定系数的计算和抗滑移稳定系数的计算,探讨了主动土压力和被动土压力的计算方法,总结了扶壁式挡土墙的施工要点,从资源配置、过程控制等方面提出了评价及建议。

Buttressed retaining wall has the advantages of light weight,simple structure,and suitable for high-fill excavation subgrade.Based on theory of soil balance,design of buttressed retaining wall for high-speed railway is studied.The calculation points of stability of the retaining wall,the calculation points of the earth pressure and the calculation points of the base pressure are solved.By the main coefficient method of the stability calculation,the calculation of the anti-overturning stability coefficient and the anti-slip stability coefficient is analyzed.The calculation methods of the active earth pressure and the passive earth pressure are discussed.The key points of buttressed retaining wall construction are summarized,and the evaluation and suggestions are put forward from the aspects of resource allocation and process control.