东莞市梨川大桥工程中堂矮塔斜拉桥设计

Design of Zhongtang Low-pylon Cable-stayed Bridge of Dongguan Lichuan Bridge Project

东莞市梨川大桥工程中堂水道主桥为矮塔斜拉桥,跨越东江中堂水道。从桥梁总体设计和结构设计两方面阐述主桥的设计思路和主要技术特点;通过总体杆系计算和三维实体仿真分析,掌握桥梁的整体受力特性及宽幅式断面剪力滞、轴力滞特征,明晰索力的传递规律与腹板受力不均匀性,寻求此类矮塔斜拉桥的合理受力状态。

The main bridge of Zhongtang waterway in Dongguan Lichuan Bridge Project is a low-pylon cable-stayed bridge spanning Zhongtang waterway of Dongjian River.The article sets forth the design idea and the main technical characteristics of the main bridge from the master design and the structural design of the bridge.After the overall bar system calculation and the three-dimensional entity simulating analysis,the integral stressing characteristic,width sectional shearing lag and axis-force lag character of the bridge are mastered.The article makes clear that the transferring rule of cable force and the web stress are not even.It is to seek the reasonable stress status of this low-pylon cable-stayed bridge.