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一、前言天津永和大桥是津汉公路(天津至汉沽)跨越永定新河的一座公路桥梁,原设计为二级公路,但据近年内制订的交通发展规划,该桥及邻近路段拟作为山广公路(山海关至广州)的组成部分,因此通车之后,交通量势将迅速增加。本桥为主跨99.85+260+99.85米的P.C.斜张桥,采用这种大跨径新桥型的主
I. Introduction Tianjin Yonghe Bridge is a highway bridge spanning Jinhang Highway (Tianjin to Hangu) crossing Yongding New River and was originally designed as a secondary highway. However, according to the traffic development plan formulated in recent years, the bridge and adjacent sections are intended to serve as Shan Guang Highway (Shanhaiguan to Guangzhou) part, so after opening, the traffic volume will rapidly increase. The main span of this bridge is 99.85 + 260 + 99.85 meters P.C. oblique bridge, using this long-span main bridge