城市桥梁限载吨位的研究

Study on Limit Load Tonnage of Urban Bridge

为确保城市桥梁的安全运营,需合理确定其限载吨位.在充分调查我国城市桥梁限载吨位现状的基础上,选取不同桥型、宽度、跨度的桥梁,从设计的角度来明确城市桥梁限载吨位设置的方法、影响因素,以及限载吨位与桥型、车道数、跨度的关系,计算了典型桥型、跨径、宽度桥梁的理论限载吨位值,并给出了设置城市桥梁限载吨位的参考性意见.

In order to ensure the transportation safety of urban bridges, and reasonably determine the limit load tonnage, based on a full investigation of current situation of the limit load tonnage of urban bridge, the bridges with different types, widths and spans are chosen to clear the setting methods and the influencing factors of the limit load tonnage of urban bridge, as well as the relationships among bridge type, the number of lanes and span. Furthermore, the theoretical value of the limit load tonnage of urban bridge with typical bridge type, span and width is calculated. Finally, the referential proposals on the settings of the limit load tonnage of urban bridge are given. This will provide lessons and references for urban loading limit settings.