加设封闭式防护罩的预应力混凝土槽形梁整体设计研究

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摘要:为了能够有效地解决铁路桥粱跨越具有特殊环境保护要求的立交道路及河流和水果,可以通过在将梁上
加设防护式封同罩的错施加以解决。以朔黄铁路跨越卫千梁的桥粱工点设计为背景,通过结构分析计算及设计优
化,在强证整非结构安全的前提下通过在槽形连埃梁上加设防护式封闭罩的方式时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。
关键词:预息力混凝土;槽彤逃续梁;封闭式防护罩:设计
中圖分类号:0442.5.
文献标识码;A .
文章编号:1004 - 2954(2011)11 - 0062 -05
Study on Design of Pre-Stressed Concrete Continuous
Trough Girder Installed with Close-type Shield
Fan Lianhe :
( Departmene of Bridges。Chine Rallwey Third Survey and Design lastiuate Croup Coporation, Tianjin 300142 )
Abstract: Some existing reilways, highways, rivene and lange channels suggest strict standards or
environmental protection, when rmilway bridges spun over them. the problemu can be solved by insalling a
elose-type shield on the bridge. Considering the bridge spanned the Wei-qian chunnel of Handan -
Huanghuagang railway, accurlte calculations, analyses and optimixed design were carriedout and a
close-type shield on the bridge was intalled, in the premise of ensuring the struetural salety, Wei-qian
channel's water quality can be proiccted. The bridge design approuch is worth while to spread widely for
those bridges with environmental protetion requirements.
Key words: Pre-tressed concrete; Continuous trough girder; Clos-iype shield; Design
目前环境保护已经成为-种重要的铁路桥梁设计
理念。在铁路桥梁跨越那些对环境保护有严格要求的
收需日期,2011-08 -29
既有公路.铁路及河流和水渠时,需要采取相关的环境
作者简介:范连合(1975- -), 男，工程师, 200年毕业于兰州交通大学
保护揩施，避免铁路桥梁在跨越时对其造成不良影响。
桥梁工程专业,工学硕士，E-mail:Qhpleye@ 163. com。
因此考虑在桥梁上设置类似防护單类的结构既能起到
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