钢拉杆与混凝土黏结锚固抗拔有限元分析  

Finite element analysis of pulling resistance of steel tension rods and concrete bonded anchorage

作　　者：徐聪 杨建 马志强 XU Cong;YANG Jian;MA Zhi-qiang(Dalian Branch Company of CCCC Tianjin Port Engineering Design&Consulting Co.,Ltd.,Dalian,Liaoning 116001,China)

机构地区：[1]中交天津港湾工程设计院有限公司大连分公司,辽宁大连116001

出　　处：《中国港湾建设》2024年第4期59-63,68,共6页China Harbour Engineering

摘　　要：大连湾海底隧道北岸浅埋段采用混凝土墩与钢拉杆作为防撞结构措施,由于施工场地条件的制约,钢拉杆的锚固长度受限。基于相关文献中的钢筋混凝土黏结锚固性能试验数据结果,分析了钢筋与混凝土之间的黏结滑移本构模型,确定了主要影响参数及取值。结合现有规范设计要求与海上施工条件,应用有限元软件对钢筋与混凝土黏结滑移进行数模分析,并与已有试验结果数据对比,优化钢拉杆锚固长度与锚固形式,进一步合理化设计方案。应用有限元软件计算的结果与试验结果基本一致,可为类似工程设计及后续研究提供借鉴。The shallow buried section on the north shore of Dalian Bay immersed tunnel adopts concrete piers and steel tension rod as anti-collision measures with a limited anchorage length due to construction conditions.The bond-slip constitutive models between steel bar and concrete were analyzed,and main influence parameters and values were determined based on experimental data of bonded anchorage performance of reinforced concrete in relevant literature.Considering the existing design requirements and offshore construction conditions,finite element software was used to conduct numerical analysis of the bond and slip between steel bar and concrete,and compared with existing experimental data to optimize the anchorage length and anchorage form of the steel tension rods,and further rationalize the design scheme.The results of finite element software agree well with the test results and provide reference for similar engineering design and subsequent study.

关 键 词：黏结滑移本构关系 黏结滑移模型 锚固长度 拉拔荷载 

分 类 号：U652.74[交通运输工程—港口、海岸及近海工程]