摘要
既有铁路低站台加高常用“封锁邻近站台的线路后,对本站台拆除后重建”的施工方案,为解决传统方案中施工工期长、机械设备多、封锁时间长、工程质量较差、工程造价高、对环境影响大等问题。采用一种装配式方法,结合铁路低站台的结构类型、线路技术特点和加高量,设计出方箱式站台模块、方箱框架式站台模块、骨架盖板式站台模块、桥板式站台模块4种不同类型的普速铁路站台用钢筋混凝土模块,并对各种模块的结构类型、材料性能、结构受力、固定方式、优缺点及适用范围等进行分析,给出模块安装施工工艺要求。经在京九线、新兖线等铁路部分低站台加高试用实践,均达到预期目的,目前已在济南铁路局、呼和浩特铁路局推广使用。实践表明,该方案较传统方案施工工期缩短50%以上,对铁路运输影响减少50%~75%,且具有安全风险低、结构质量好、耐久性长、施工工艺简便、综合成本低等优点。
The commonly used construction plan for increasing the height of existing railway low platforms is to demolish and rebuild the platform after blocking the lines adjacent to the platform,in order to solve the problems of long construction period,multiple mechanical equipment,long blocking time,poor engineering quality,high engineering cost,and significant environmental impact of traditional methods.This article adopted an assembly method and combined the structural types,technical characteristics,and elevation of railway low platforms to design four different types of reinforced concrete modules for ordinary speed railway platforms:square box platform module,square box frame platform module,skeleton cover plate platform module,and bridge slab platform module.An analysis was conducted on the structural types,material properties,structural forces,fixing methods,advantages and disadvantages,and applicable rang.Requirements for module installation construction technology were proposed.The low platform elevation scheme,which adopted prefabricated reinforced concrete platform modules and assembled the foundation after simple on-site treatment,achieved the expected goals through trial practice in some railway sections,including the Beijing Kowloon Line,and Xinyan Line.It has been promoted and used in Jinan Bureau and Hohhot Bureau.The construction period of the plan was shortened by over 50%compared to traditional methods,resulting in a 50%~75%reduction in the impact on railway transportation.Furthermore,it was characterized by low safety risks,high structural quality,extended durability,straightforward construction techniques,and reduced overall costs.
作者
孟现本
MENG Xianben(China Railway Ji'nan Group Co Ltd.,Ji'nan 250013,China)
出处
《铁道勘察》
2024年第2期162-170,共9页
Railway Investigation and Surveying
关键词
铁路站台
结构设计
受力分析
模块安装
装配式
railway platforms
structural design
force analysis
module installation
prefabricated
作者简介
孟现本(1973-),男,1998年毕业于长沙铁道学院桥梁工程专业,工学学士,高级工程师,E-mail:13791112887@163.com。
