【摘要】 通辽铁路枢纽峰下立交,它衔接大郑线等5条铁路6个方向,场地土的承载力较低,石料缺乏,需在此处修建挡土墙。经多方案比选,最终在铁路峰下立交采用扶壁式挡土墙方案。系统阐述了挡墙的构造,墙身截面尺寸的拟定、墙身整体稳定性和地基承载力及合力偏心距验算、墙身钢筋混凝土结构配筋设计和裂缝宽度验算。实践证明,采用扶壁式挡墙,安全可靠,经济技术综合指标较好。更多还原

【Abstract】 The interchange under Tongliao Railway hub connects five lines including Dahushan-Zhengjiatun Line leading to six directions.The low bearing capacity of soil in this field and lack of stone require retaining wall to be built here.Through comparison between many schemes,buttressed retaining wall is decided to be adopted here finally.The scheme systematically describes the structure of retaining wall;the dimension draft of wall sections;the checking calculation of integral stability of wall,bearing capacity of foundation and eccentricity of composite force;the design of structural reinforcement for steel concrete wall and the checking calculation of crack width on the wall.The practical work has proved that the scheme of buttressed retaining wall is safe and reliable,and has good economic and technical indexes.更多还原