简支空心板梁桥受力特征及病害处理技术  

Stress Characteristics and Disease Treatment Techniques of Simply Supported Hollow Slab Beam Bridges

作　　者：乔菡菡 QIAO Han-han(Hebei Reach Traffic Engineering Consulting Co.Ltd.,Shijiazhuang 050011,China)

机构地区：[1]河北锐驰交通工程咨询有限公司,石家庄050011

出　　处：《工程建设与设计》2025年第3期114-116,共3页Construction & Design for Engineering

摘　　要：随着运行时间的推移和交通运输量负荷的增加,年代较久的空心板桥出现了各种结构问题,导致其承载能力下降,安全性受到威胁。为了确保其正常使用,延长其使用寿命,需要对已经出现问题的空心板梁桥采取有效的加固措施。论文针对相关问题进行了详细的统计和分析,对病害的特征及形成原因进行讨论。以河北省石家庄市的某桥梁为研究对象,对其受力特征进行研究,采用增大截面积的加固法和粘贴钢板加固法进行加固处理。结果表明,在荷载作用下,桥梁的挠度校验系数0.97和最大应变校验系数0.89在合理范围内,表明经过加固处理后的桥梁承载能力和结构强度均满足结构受力要求。With the passage of running time and the increase of traffic load,the hollow slab bridge with a long age has a variety of structural problems,which leads to the decline of its carrying capacity and the threat of safety.In order to ensure its normal use and prolong its service life,it is necessary to take effective reinforcement measures for hollow slab girder bridges that have problems.In this paper,the relevant problems are analyzed in detail,and the characteristics and causes of the disease are discussed.Taking a bridge in Shijiazhuang,Hebei Province as the research object,the mechanical characteristics of the bridge were studied,and it is reinforced by increasing the cross-sectional area and combining with the finite element analysis method.The results show that under load,the deflection verification coefficient of 0.97 and the maximum strain verification coefficient of 0.89 of the bridge are within a reasonable range,indicating that the bearing capacity and structural strength of the reinforced bridge meet the structural stress requirements.

关 键 词：空心板梁 受力性能 桥梁病害 加固设计 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]