加设封闭式防护罩的预应力混凝土槽形梁整体设计研究  

Study on Design of Pre-Stressed Concrete Continuous Trough Girder Installed with Close-type Shield

作　　者：范连合[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司桥梁处,天津300142

出　　处：《铁道标准设计》2011年第11期62-66,共5页Railway Standard Design

摘　　要：为了能够有效地解决铁路桥梁跨越具有特殊环境保护要求的立交道路及河流和水渠,可以通过在桥梁上加设防护式封闭罩的措施加以解决。以朔黄铁路跨越卫千渠的桥梁工点设计为背景,通过结构分析计算及设计优化,在保证整体结构安全的前提下通过在槽形连续梁上加设防护式封闭罩的方式对卫千渠进行环境保护。这种设计方法在对有环保要求的桥梁设计上具有一定推广使用价值。Some existing railways,highways,rivers and large channels suggest strict standards on environmental protection,when railway bridges span over them,the problem can be solved by installing a close-type shield on the bridge.Considering the bridge spanned the Wei-qian channel of Handan-Huanghuagang railway,accurate calculations,analyses and optimized design were carried out and a close-type shield on the bridge was installed,in the premise of ensuring the structural safety,Wei-qian channel＇s water quality can be protected.The bridge design approach is worth while to spread widely for those bridges with environmental protection requirements.

关 键 词：预应力混凝土 槽形连续梁 封闭式防护罩 设计 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]