保阜高速公路跨京广铁路立交桥梁方案研究

目前我国高速公路、市政道路与铁路发生交叉越来越多,如何选择合理的跨越方案,减少对铁路运营的影响,是当前需要重点研究的课题。就上跨铁路的桥梁方案进行研究,提出了预应力混凝土T形刚构转体、预应力混凝土独塔单索面斜拉桥、预应力混凝土T梁的桥梁方案,并对各个方案进行全面评价,并选择对铁路影响最小的T形刚构转体方案跨越,显著减少对铁路的影响,并确保铁路运营的安全。

Research on Bridge Scheme of Baoding-Fuping Expressway Crossing above Beijing-Guangzhou Railway

At present more and more phenomena of crossing railways have occurred among expressways or municipal roads.How to select the reasonable intersection scheme to reduce the impact on the railway operation has become a important research subject.In this paper,the relevant schemes of a bridge crossing above a railway were studied and suggested,including prestressed concrete T-shaped rigid frame with swing construction method,prestressed concrete cable-stayed bridge with single tower and single cable plane,and prestressed concrete T-shaped girder.Finally,according to the comprehensive evaluation on these schemes,the scheme of crossing over the railway by T-shaped rigid frame with swing construction method was selected as the recommended scheme.With this recommended scheme,the influence on the railway could be reduced obviously and the safety of railway operation could be ensured.