某公路大桥加固设计

Reinforcement Design of A Highway Bridge

通过对某高速公路大桥病害原因调查及分析,根据具体病害和结构特点,提出了该大桥T梁、横隔版及盖梁的加固设计方案,并借助于桥梁博士建立全桥结构分析模型,对加固前后内力进行了对比。结果表明,针对不同病害特点选取合理的加固方案,能有效增强桥梁的承载能力或降低截面弯矩,使部分病害严重的桥梁经加固后仍处于安全工作状态,既节约了资金又保证了安全,也为类似工程设计提供了参考。

Based on the investigation and analysis of the disease causes of a highway bridge,according to the specific diseases and structural characteristics,the strengthening desing of the bridge＇s T beams,diaphragm and cover version of the beam is proposed,a full-bridge structual model is established with the help of Dr. Bridges,and the internal forces before and after reinfocement are compared. The results show that selecting appropriate reinformcement programs for different disease characteristics can effectively enhance the carrying capacity of the bridge or reguce bedning moment,so that serious disease part of the bredge is still in safe working condition after reinformcement,which saves money and ensures the safety and also provides a reference for similar engineering design.