既有铁路架空保护支护桩截面优化设计研究  

Research on Optimization Design of Cross Section of Existing Railway Overhead Protective Support Pile

作　　者：龚政 王树峰 向文秘 周越 刘鑫章 谭鑫亮 GONG Zheng;WANG Shufeng;XIANG Wenmi;ZHOU Yue;LIU Xinzhang;TAN Xinliang(General Construction Company of CCTEB Group Co.,Ltd.,Shiyan Hubei 442000,China)

机构地区：[1]中建三局集团有限公司工程总承包公司,湖北十堰442000

出　　处：《工程质量》2021年第9期41-44,49,共5页Construction Quality

基　　金：市政道路现浇箱涵上方既有铁路保护设计与施工关键技术研究(CSCEC3Z-2019-06)。

摘　　要：根据原设计,十堰市林荫大道项目下穿东风铁路通道工程中的既有铁路架空保护支护桩采用大截面矩形空心桩的形式,其施工复杂、难度大、风险高,本文从投资、工期和安全三方面对支护桩的截面设计进行对比研究,从而对原设计支护桩截面进行优化,以更有利于现场施工。According to the construction blueprint,the large section rectangular hollow pile is used in the existing railway overhead protection support pile in the project of Shiyan Linyin Avenue underpass Dongfeng railway passage.The construction is complicated,difficult,and risky.This paper makes a comparative study on the cross-section design of the support pile from three aspects of investment,construction period and safety,so as to optimize the original designed supporting pile cross-section to be more conducive to on-site construction.

关 键 词：铁路 架空保护 空心桩 截面优化 

分 类 号：U455.1[建筑科学—桥梁与隧道工程]