研究目的：探寻一种简便可行、能够用来指导框架桥设计的计算方法。
Research purposes: to find out a simple and feasible computing method of skew frame to guide its design.
摘要：既有线框架桥顶进施工前，要根据施工现场实际情况制定切实可行的施工方法。
Abstract: the framework of existing in jacking bridge before construction, according to the actual situation of construction site make feasible construction method.
框架桥顶进在既有线施工中是较常见的一种施工方式，已经在铁路工程施工中广泛应用。
Skeleton frame bridge jacking method is a frequently adopted practice in the construction of existing railway lines.
施工过程中严格按照施工方案执行，总结并改进框架桥下穿既有站场施工工艺和存在的不足。
Construction process in strict accordance with the construction plan execution, summarizes and improve frame bridge station construction technology and wear both deficiency.
本文首先介绍了框架桥的应用情况，指出框架桥结构是铁路提速后，大规模使用的一种下穿结构形式。
The author firstly expounded the applications of frame bridge, and then pointed out that frame work is one of the down through structures adopted on a large scale during railway speed rising.
摘要：下穿铁路顶进框架桥的施工技术复杂，选用不同的设计方案和施工技术会对工程造价产生较大影响。
Abstract: construction technology of underpass railway jacking frame bridge is complex, different design and construction technology will have a greater impact on the project cost.
由此可见，用光弹性试验方法可以得出较准确的数据，为斜交箱形框架桥的设计和理论分析提供比较可靠的依据。
So the accurate data from the photoelastic method providing reliable basis for the design and theoretical analysis of oblique frame bridge can be obtained.
结合原太高速公路公铁立交施工实践，介绍了歇子寨框架桥顶推法施工的技术和工艺，供有关工程技术人员参考。
Combined with construction practice, the paper introduced the construction technology of incremental launching method construction of Xiezizai frame bridge of Yuanping Taiyuan freeway for reference.
进而介绍了由于设计、施工等几种常见的可能引起框架桥产生裂缝的原因，并以京九线某里程段的二孔框架桥出现裂缝情况为例分析了其出现裂缝的原因及裂缝的危害性。
The author took the crack case of one of two-hole frame bridges in the Jingjiu Railway Line as an example to analyze the reasons of its crack and the danger of crack to the sa.
进而介绍了由于设计、施工等几种常见的可能引起框架桥产生裂缝的原因，并以京九线某里程段的二孔框架桥出现裂缝情况为例分析了其出现裂缝的原因及裂缝的危害性。
The author took the crack case of one of two-hole frame bridges in the Jingjiu Railway Line as an example to analyze the reasons of its crack and the danger of crack to the sa.
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