连续梁拱组合结构桥梁加固方案及监测分析

Analysis on Reinforcement Scheme and Monitoring of Continuous Beam-Arch Composite Structure Bridge

连续梁拱组合结构桥具有良好的桥梁形式、经济效益,在实际工程中得到广泛应用,但由于施工、维护不当,在实际工程中往往存在开裂、下挠等各类问题。针对上述问题,文章以某桥梁工程为例,结合桥梁既有病害,分析其成因,制订了主梁、拱座加固方案,粘贴碳纤维布加固主梁,拆除拱座重新浇筑,并监测主梁顶升过程中结构的应力状态,以评估方案的可行性,旨在为类似工程提供参考。

Continuous beam-arch composite structure bridge has good bridge form and economic benefits,and is widely used in practical engineering.However,due to improper construction and maintenance,there are often various problems such as cracking and deflection in practical engineering.In view of the above problems,this paper takes a bridge project as an example,analyzes the causes of existing bridge diseases,formulates the reinforcement scheme of the main beam and the arch seat.Carbon fiber cloth is pasted to strengthen the main beam,the arch seat is removed and re-poured,and the stress state of the structure during the lifting process of the main beam is monitored to evaluate the feasibility of the scheme and provide reference for similar engineering.