摘要
钢混组合梁相比混凝土梁具有自重轻、建筑高度低、强度高、绿色环保等优点。采用钢混组合梁拼宽混凝土旧桥是一种较为新型的拼宽方式。以江苏省高速公路改扩建为工程背景,对其中一座既有支线上跨混凝土桥梁采用钢混组合梁进行两侧拼宽设计,解决了混凝土桥梁拼宽净空不足、施工周期紧等问题,对今后同类混凝土桥梁拼宽设计具有参考意义。
Steel and concrete composite beam has the advantages in light weight. low building height, high strength and environmental protection. Taking the expansion and reconstruction of highway as the engineering background, the steel and concrete composite beam is used for the expansion of a concrete bridge crossing on a branch line. This method solves the problems of insufficient clearance of the expansion of concrete bridges and limted construction time, and it has reference significance for the future widening design of concrete bridges.
出处
《上海公路》
2019年第2期42-45,51,M0003,共6页
Shanghai Highways
关键词
钢混组合梁
旧桥拼宽
支线上跨
steel and concrete composite beam
old bridge widening
branch line
