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.
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。
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.
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。
Until now the bridge is the longest span in the continuous rigid frame double line railway bridge in our country.
该桥是目前我国最大跨度的预应力混凝土连续刚构铁路双线桥。
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