摘要
为研究不同桥梁结构形式上跨方案对在建高铁的影响,文章以拟建某城市道路上跨在建高铁立交工程为例,选择简支斜交预应力混凝土梁及简支正交钢箱梁两种上跨方案,从施工难度、铁路运营干扰因素、后期养护、施工周期和经济性等方面,对两种上跨方案进行对比研究,并给出方案优缺点。得出结论,新建城市道路上跨高铁时,应结合工程特点进行方案研究,预应力混凝土梁上跨方案造价较低,临时设施较少,对铁路干扰较小,施工周期较短,后期养护较简单,可优先选择。
In order to study the influence of different bridge structural forms overcrossing high-speed railway under construction,this paper takes the proposed urban road overcrossing high-speed railway interchange engineering as an example,and selects two kinds of overcrossing schemes of simply-supported skew prestressed concrete beam and simply-supported orthogonal steel box girder.From the aspects of construction difficulty,railway operation interference factors,later maintenance,construction period,economy and so on,the two overcrossing schemes are compared and studied,and the advantages and disadvantages of the schemes are given.It is concluded that when the newly-built urban road overcrosses the high-speed railway,the scheme should be studied in combination with the engineering characteristics.The cost of the prestressed concrete beam overcrossing scheme can be preferred because of its lower cost,fewer temporary facilities,less interference to the railway,shorter construction period,and simpler later maintenance.
作者
李臣
LI Chen(China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China)
出处
《工程技术研究》
2025年第6期178-180,共3页
Engineering and Technological Research
关键词
桥梁结构形式
在建高铁
上跨方案
bridge structural form
high speed railway under construction
cross over plan
