高速公路扩建施工中桥梁拼接加固技术  

Bridge Splicing Reinforcement Technology in Expressway Expansion Construction

作　　者：古传威 GU Chuanwei(West Coast Branch of Gongdong Traffic Industrial Investment Co.,Ltd.,Taishan,Guangdong 529231,China)

机构地区：[1]广东交通实业投资有限公司西部沿海分公司,广东台山529231

出　　处：《施工技术(中英文)》2025年第3期46-49,77,共5页Construction Technology

摘　　要：对高速公路扩建施工中桥梁拼接加固技术进行研究,通过横向分布系数评估桥梁拼接质量,通过抗冲击系数和抗弯承载力评判加固效果,并对桥梁拼接的基础沉降进行计算分析。研究结果表明,桥梁拼接后横向分布系数下降且分布更均匀,说明新拼接的桥梁能够承担更多的荷载,有利于保证安全性和稳定性;新旧桩联合作用较新桩单桩作用承担的荷载更分散和均衡,降低了荷载作用;随着桩数的增加,容许承载力、恒荷载逐渐增大并趋于稳定;桥梁拼接后抗弯承载力上升,采用拼接技术对于高速公路桥梁加固具有良好的效果。The bridge splicing reinforcement technology in expressway expansion construction is studied.The quality of bridge splicing is evaluated by the transverse distribution coefficient.The impact resistance coefficient and bending bearing capacity are used to evaluate the reinforcement effect,and the foundation settlement of bridge splicing is calculated and analyzed.The research results show that the transverse distribution coefficient of the bridge after splicing decreases and the distribution is more uniform,indicating that the newly spliced bridge can bear more loads,which is conducive to ensuring safety and stability.The combined action of new and old piles is more dispersed and balanced than the load borne by the single pile of new piles,which reduces the effect of load.With the increase of the number of piles,the allowable bearing capacity and constant load gradually increase and tend to be stable.The bending bearing capacity of the bridge increases after splicing,and the splicing technology has a good effect on the reinforcement of expressway bridges.

关 键 词：高速公路 桥梁 扩建 拼接 加固 

分 类 号：U445[建筑科学—桥梁与隧道工程]