桥梁伸缩缝的精确形变位移特征解析及其多维度影响评估  

Analysis of Accurate Deformation and Displacement Characteristics of Bridge Expansion Joints and Its Multi-dimensional Impact Assessment

作　　者：叶周灵 程林峰[2] 卢彭真[2] YE Zhou-ling;CHENG Lin-feng;LU Peng-zhen(Longquan Transportation Bureau,Longquan,Zhejiang,323700,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou,Zhejiang,320014,China)

机构地区：[1]浙江省龙泉市交通运输局,浙江龙泉323700 [2]浙江工业大学土木工程学院,浙江杭州320014

出　　处：《建材技术与应用》2025年第2期67-71,共5页Research and Application of Building Materials

基　　金：丽水龙泉市公益项目(2023KJZC-006)。

摘　　要：随着桥梁工程技术的不断进步,桥梁伸缩缝作为连接桥梁各段结构、确保桥梁安全运营的关键部件,其性能直接影响桥梁的整体耐久性和行车舒适度。为此探讨了桥梁中小变形伸缩缝,特别是无缝设计下的形变与位移特性,深入剖析其运作机理。同时融合温度变化、混凝土材料收缩与徐变效应、外部荷载作用等因素综合评估其对伸缩缝形变位移的影响。通过理论推导与实证分析提出一种更为精确的计算模型,用于估算无缝伸缩缝的伸缩量,并据此优化其结构尺寸设计。With the continuous progress of bridge engineering technology,the bridge expansion joint is a key component to connect the structure of the bridge and ensure the safe operation of the bridge.Its performance directly affects the overall durability and driving comfort of the bridge.For this reason,the deformation and displacement characteristics of the small deformation expansion joint of the bridge,especially the seamless design,were discussed,and the operation mechanism was analyzed in depth.At the same time,the influence of temperature change,shrinkage and creep effect of concrete material,and external load on the deformation and displacement of expansion joints were comprehensively evaluated.Through theoretical derivation and empirical analysis,a more accurate calculation model was proposed to estimate the expansion of the seamless expansion joint,and the structure size design was optimized accordingly.

关 键 词：桥梁伸缩缝 形变计算 影响因素分析 设计 运维安全 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]