南京雨花线性公园慢行桥梁总体设计

Overall Design of Slow-traffic Bridge in Nanjing Yuhua Linear Park

摘要:

作为南京首座线性公园，雨花线性公园以桥梁形式为主体，在城市中打造出一条生态、低碳的城市共享空间，也承载了市民通行、休闲、社交等多种功能。桥梁总长约1.2 km，标准宽度5 m，标准跨径为20、25 m，跨路口段跨径为36、40、48.81 m，为专供人行和非机动车行驶的城市慢行桥梁。基于项目特点，分别对桥梁结构的总体设计理念、结构体系比选以及装饰细节做法进行了介绍，并以跨梅苑南路桥为例，对桥梁进行了静力分析、动力特性分析以及人行舒适度评价。结果表明，桥梁结构强度、刚度均满足规范要求；增设TMD后，桥面竖向和横向加速度峰值均有较大幅度的减小，人行舒适度满足德国人行桥规范CL1级别。

Abstract:

As the first linear park in Nanjing, Yuhua Linear Park is mainly in the form of bridges, creating an ecological and low-carbon urban sharing space in the city, and also carrying various functions such as citizen transportation, leisure and social interaction. The total length of the bridge is about 1.2 km with a standard width of 5 m, standard spans of 20 m and 25 m, and spans of 36 m, 40 m and 48.81 m at intersections, which is an urban slow-traffic bridge designed specifically for pedestrians and non-motorized vehicles. Based on the characteristics of the project, the overall design concept, structural system comparison and decorative details of the bridge structure are introduced. Taking the bridge spanning South Meiyuan Road as an example, the static analysis, dynamic characteristic analysis and pedestrian comfort evaluation are conducted on the bridge. The results indicate that the strength and stiffness of the bridge structure meet the requirements of the specifications. After the addition of TMD, the peak values of vertical and horizontal acceleration of the bridge deck are significantly reduced, and the pedestrian comfort meets the CL1 level of the German pedestrian bridge specification.