一种拆除上跨铁路桥梁防护网构型设计与分析  

Design and Analysis of a Protective Net Configuration for Demolished Overpass Railway Bridges

作　　者：徐志才 Xu Zhicai(Anhui Railway Construction Co.,Ltd,Bengbu 233040,Anhui,China)

机构地区：[1]安徽铁建工程有限公司,安徽蚌埠233040

出　　处：《绿色科技》2024年第18期205-208,共4页Journal of Green Science and Technology

基　　金：上海上铁建筑工程(集团)有限公司科技开发项目(编号:2024Z039)。

摘　　要：上跨铁路桥梁拆除施工时,需对下方既有运营铁路进行有效保护,若安全措施不到位,容易诱发安全事故。利用待拆除桥梁的既有桥墩、墩柱结构,提出了一种跨越铁路桥梁拆除时使用的防护网,包括安装于待拆桥梁桥墩上的横梁与钢索网;其利用待拆桥梁桥墩作为支点在桥体下方张拉防护网,防护网兜住落块时能发生缓冲下降,有效降低了落块的冲击效应与破坏力。所提防护网利用待拆桥梁的桥墩、墩柱作为支柱,充分利用了既有构筑物,方便快捷,防护网结构简单、组装方便、综合造价低廉、安装与拆卸时间短等特点,为保护待拆桥梁下方既有铁路提供了简便实用设备。When demolishing an overpass railway bridge,it is necessary to effectively protect the existing operating railway below.If safety measures are not in place,it is easy to trigger safety accidents.A protective net for demolished railway bridges is proposed by utilizing the existing pier and column structures of the bridge to be demolished,including crossbeams and steel cable nets installed on the piers of the bridge to be demolished.It uses the bridge pier to be demolished as a support point to tension a protective net under the bridge body.When the protective net catches the falling blocks,it can cause buffering and descent,effectively reducing the impact effect and destructive force of the falling blocks.The proposed protective net utilizes the piers and columns of the bridge beam to be demolished as pillars,fully utilizing the advantages of existing structures,such as convenience and speed,simple structures,easy assembly,low comprehensive cost,and short installation and dismantling time.It provides a simple and practical equipment for protecting the existing railway below the bridge beam to be dismantled.

关 键 词：上跨铁路桥梁 拆除 防护网 

分 类 号：U216.6[交通运输工程—道路与铁道工程]