南城桥二次拓宽改建技术研究

Studies on Technology of the 2nd Widening & Improving to Nancheng Bridge

在路网改造中,由于原有桥涵等级低、线形不畅及老化破损,加之沿路建筑、河道的制约等,使老桥改造成为道路改建的关键和难点。通过对南城桥二次拓宽改造的方案优化过程、主要技术措施及改建成效等方面的阐述,探讨中小桥梁老桥改建技术。

In the reconstruction of road network of the city, the old bridge improvement remains the difficulty because of the lower grade, the poor alignment, the ageing and wear, as well as the restraint from alongside buildin gs and river course. In this paper description is given to the optimization of the 2 nd widening and improving scheme of the Nancheng Bridge, as well as the main facilities and their effects.