独柱支撑桥梁抗倾覆能力研究  

Study on Anti-overturning Capability of Single-column Supported Beam Bridge

作　　者：张京[1] 高超[1] 胡鹏[1] 

机构地区：[1]北京市市政工程设计研究总院,北京市100082

出　　处：《城市道桥与防洪》2013年第12期154-157,15-16,共4页Urban Roads Bridges & Flood Control

摘　　要：随着城市建设不断发展,大量的立交桥、高架桥不断出现。独柱支撑梁式桥,因为其桥梁的自身优势被广泛采用。但近几年,关于独柱支撑体系桥梁的重大、恶性事故接连发生,造成多人死亡和重大的经济损失。独柱支撑梁式桥的横向稳定问题受到广泛重视。现行的桥梁设计和施工规范仅对横向稳定设计荷载进行了要求,并没有对平面曲线梁桥的内力分析方法、技术规定、相关设计参数进行相应说明,导致设计人员对此种桥型认识不能统一。通过对北京市现有独柱支撑梁式桥进行调查、统计、分类;根据归纳结果,建立典型模型进行计算求解。经过计算分析,进一步得出桥梁平曲线半径等因素对横向稳定的影响规律。With the continuous development of city construction, a large number of grade separations and elevated bridges are constructed. The single-column supported beam bridge is widely used because of its superiority. But in recent years, the major and malignant accidents of single-column supported beam bridge happen continuously so as to cause many people dead and the great economic loss. The transverse stabilizing problem of single-column supported beam bridge has aroused general concern. The current bridge design and construction specification only require the design load of transverse stabilization, and have no relative illustration of inner force analysis method, technical specification and relative design parameter of plane curve beam bridge, which result in the no-unified understanding for this bridge by the designers. According to the investigation, statistics, classification and summary of the existing single-column supported beam bridges in Beijing. The typical model is established for calculation and solution. After the calculation and analysis, the article further introduces the influence law of the factors, i.e. plane curve radius of bridge on the transverse stabilization.

关 键 词：独柱支撑 横向稳定 抗倾覆能力 安全系数K 

分 类 号：U441[建筑科学—桥梁与隧道工程]