高速公路扩宽桥梁设计研究

Research on the Design of Expressway Widening Bridge

桥梁是高速公路扩宽工程的重要组成部分,其设计直接关系到交通安全和公路可持续发展。在高速公路扩宽桥梁设计中,合理确定连接的构造形式是保障桥梁稳定性的重要基础。文章结合实际工程案例,论述高速公路桥梁扩宽的基本形式,然后分析高速公路桥梁扩宽横向连接构造和桥梁加宽适用性。在扩宽后的桥梁静载试验中,其结构强度及刚度性能等各项指标均符合规定,结构性能处于弹性工作的状态,整体力学性能满足规范要求。

Bridge is an important part of expressway widening engineering,and its design is directly related to traffic safety and sustainable development of the highway.In the design of expressway widening bridge,reasonable determination of the structural form of the connection is an important basis for ensuring the stability of the bridge.Combined with practical engineering cases,this paper discusses the basic form of expressway bridge widening,and then analyzes the transverse connection structure of expressway bridge widening and the applicability of bridge widening.In the static load test of the widened bridge,all indicators such as the structural strength and stiffness performance are in line with the provisions,the structural performance is in an elastic working state,and the overall mechanical properties meet the requirements of the specification.