张弦梁人行桥设计  

A Pedestrian Bridge Design with Beam String Structure

作　　者：杜建成 郭继业 DU Jian-cheng;GUO Ji-ye(Zhuhai Institute of Urban Planning&Design,Zhuhai 519000,China)

机构地区：[1]珠海市规划设计研究院,广东珠海519000

出　　处：《工程建设与设计》2021年第21期69-72,共4页Construction & Design for Engineering

摘　　要：张弦梁结构由刚性上弦杆、柔性拉索和中间撑杆组成,是一种自平衡大跨度预应力空间结构体系,也是混合结构体系发展中一个比较成功的创造。张弦梁结构体系简单、受力明确、结构形式多样、充分发挥了刚柔2种材料的优势,并且制造、运输、施工简捷方便,具有良好的应用前景。某人行天桥项目采用张弦梁体系,结构的强度、刚度及稳定性验算均满足规范要求,舒适性问题通过设置调谐质量阻尼器TMD解决。张弦梁结构体系在本项目的应用,显著节省钢材,为其他类似项目的设计提供一定的参考价值。The beam string structure(BSS) is composed of rigid upper bar, flexible strings and intermediate struts. It is a self-balancing large-span prestressed spatial structure system and a relatively successful creation in the development of a mixed structure system. The BSS system is simple, with clear prestressing points and a diverse structural forms, in so that bringing the advantages of rigid and flexible materials into full play. It is also simple and convenient in terms of its manufacture, transport and constructing application, embracing a bright prospect for future application. A pedestrian bridge project has adopted BSS system. All the structural strength, stiffness and stability specifications conformed to the stipulated requirements. The comfort problem was solved by setting up TMD. The application of BSS system in this project significantly saves steel and provides valuable reference for the design of other similar projects.

关 键 词：张弦梁 人行天桥 刚性上弦杆 柔性拉索 调谐质量阻尼器 

分 类 号：U448.ll[建筑科学—桥梁与隧道工程]