临江桥提升改造可行性浅析

Brief Analysis on Feasibility of Upgrading and Reconstructing Linjiang Bridge

摘要:

临江桥是一座钢梁混凝土独塔单索面斜拉桥。为了解决桥梁过江节点交通拥堵问题，对临江桥机动车道数量从4车道改为6车道的可行性进行了分析论证。采用了文献调阅、实地调查、结构计算分析相结合的方法，从交通量调查分析、结构受力验算、重车行驶频率估算、相邻交叉口交通组织等角度进行了细致的研究。经过详细的计算和论证，确认在不改变主体结构的前提下，桥梁提升改造方案具有可行性，并建议下一阶段结合斜拉索检测、桥梁大中修、交通组织等因素，推进落实桥梁改造计划。

Abstract:

Linjiang Bridge is a steel beam concrete single-pylon single-plane cable-stayed bridge. To address traffic congestion at the river-crossing node of the bridge, a feasibility of changing the number of motor vehicle lanes on Linjiang Bridge from 4 to 6 is analyzed and demonstrated. A combined method of literature review, field investigation and structural calculative analysis is adopted for the detailed research from the perspectives of traffic volume survey and analysis, structural stress analysis, heavy vehicle traffic frequency estimation, and traffic organization of adjacent intersections. Through the detailed calculations and demonstrations, it is confirmed that the bridge upgrading and reconstruction scheme is feasible without altering the main structure. It is recommended that the implementation of the bridge reconstruction plan in the next phase be considered in conjunction with factors such as stay cable inspection, medium repair and overhaul of bridge, and traffic organization.