哈尔滨道外二十道街松花江大桥主桥方案比选

哈尔滨道外二十道街松花江江段将修建松花江公路大桥,笔者就拟建大桥的四个方案做比较选择最佳方案。通过方案比较,认为宜选用大跨度的现代化桥,提供较自由的通航净宽,避免水中基础、减少水中施工,推荐使用主孔410m的双塔混合梁斜拉桥方案。

Optimum Decision about Blue Prints of Main Bridge of Songhua River Highway Bridge

Songhua River Highway Bridge will be built over Songhua River in No.20 Street of Daowai District in Harbin, which is located between Daowai District and Songbei New District. The following are the blue prints of main bridge style: cable stayed bridge with steel-concrete beam and two towers, concrete cable stayed bridge with one tower, half-through arch bridge and continuous beam bridge. The optimum decision is made by comparison. The authors indicate that modern bridge style with long span should be adopted in order to provide free navigable net span, and foundation in water should be avoided to reduce construction in water. And the project of hybrid cable-strayed bridge with two towers and main hole 410 m is recommended.