通辽铁路枢纽峰下立交扶壁式挡土墙的应用
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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。
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.
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.
引文
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[2]苏骏,毕辉.双面加筋挡土墙结构特性分析[J].路基工程,2010(2):101-102.
[3]梅立芳,余天庆.高路堤双面直立互锚薄壁挡土墙模型试验研究[J].路基工程,2008(3):116-117.
[4]铁道部第一设计院.铁路工程设计技术手册《路基》第七篇挡土墙[K].北京:人民铁道出版社,1977.
[5]李海光.新型支挡结构设计与工程实例[M].人民交通出版社,2004.
[6]铁路路基支挡结构设计规范[S].北京:中国铁道出版社,2006:19-23.
[7]张晓莹.扶壁式挡土结构受力分析及其设计计算[J].山西建筑,2006(19):69-70.
[8]张珊菊,等.建筑土质高边坡扶壁式支挡分析设计与工程应用[J].土工基础.2004,18(2):1-5.
[9]王金艳,等.京津城际铁路扶壁式挡土墙的设计与施工技术[J].铁道建筑.2008(增刊):153-155.
[10]杨萍.扶壁式挡土墙的设计[J].建筑技术.2004(4):28,45.
[11]雷用,等.扶壁式挡墙的安全性鉴定探讨及加固[J].四川建筑科学研究.2004,30(3):66-68.
[12]陈群,等.扶壁式挡墙在工程运用中的探讨[J].道路工程.2009(11):21-24.
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