摘要
我国城乡基础建设中,受规划建设、路线走向等影响,管道涵洞铺设不可避免地受到既有线路制约。目前我国穿越铁路的框构涵施工,通常采用工字钢纵横抬梁或D梁加固线路顶进法、便线法、桥式盾构法。针对穿越高路基铁路大跨度框构涵施工,为提高效率,降低造价、缩短工期,确保铁路行车安全,满足确保构筑物的质量和性能要求,需要采用更加合理优化的施工方法。本施工技术通过辽宁省某供水工程供水管线穿越辽开线铁路防护涵施工,确定了高路基铁路框构涵便桥施工工艺,使用计算结果可靠的商业软件,采用有限元数值建模,分析施工过程中各种工况,进而优化结构施工,在实际施工中便桥法方案取得了很好的效果。
In the construction of infrastructures in towns or counties, influenced by construction layout or routing issues, the laying of pipeline culvert is incredibly restricted by the current routes. Nowadays, the construction of frame culvert for crossing railways bridge type shield by using I-steel crossbar lifting normally adopts ways of jacking, line-changing or beam or D-beam to reinforce the line. As for the construction of long span frame culvert crossing the high bed railway, in order to improve the efficiency, lower the construction cost, shorten the construction period, guarantee the traffic safety in railway, and meet requirements of quality and performance of constructed projects, it is necessary to adopt more reasonable and optimized construction technologies. Based on the construction project of protective culvert for the water supply pipeline in a water supply project crossing Liaoyuan-Kaiyuan railway in Liaoning Province, the construction technology for building frame culvert and auxiliary for high roadbed of railway is confirmed. The introduced technology uses more reliable commercial software and adopts finite element numerical modeling to analyze all operating conditions in construction, so as to optimize the construction technology. And in real constructions, the way of auxiliary bridge achieved excellent effects.
出处
《石家庄铁路职业技术学院学报》
2015年第2期42-48,共7页
Journal of Shijiazhuang Institute of Railway Technology
关键词
铁路框构涵便桥
高路基
施工技术
frame culvert and auxiliary bridges for railway
high road bed
construction technology