基于车桥耦合分析的不中断交通桥梁拼宽工艺研究  

Uninterrupted Traffic Bridge Widening Technology Based on Vehicle-bridge Coupling

作　　者：于利存[1,2] 袁朝华 张立 YU Licun;YUAN Chaohua;ZHANG Li(CCCC First Highway Consultants Co.,Ltd.,Xi’an,Shaanxi 710075,China;School of Highway,Chang’an University,Xi’an,Shaanxi 710064,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710075 [2]长安大学公路学院,陕西西安710064

出　　处：《施工技术（中英文）》2022年第18期19-24,共6页Construction Technology

基　　金：陕西省重点研发计划(2019GY-211);交通运输行业重点科技项目(2020-MS1-060)。

摘　　要：桥梁不中断交通拼宽可有效降低经济损失、交通拥堵等不利影响,但现阶段仍无明确的不中断交通桥梁拼宽施工工艺。通过数值力学仿真、场地试验,得到不中断交通施工时接缝的振动环境。并通过室内试验测得接缝材料的黏结抗拉强度。然后结合材料的黏结抗拉强度和接缝有限元受力状态,设计了不中断交通施工方案。最后通过实桥验证了该施工工艺的有效性。Bridge widening without interruption can effectively reduce economic losses, traffic congestion and other adverse effects, but there is still no clear construction technology for bridge widening without interruption at this stage. The vibration environment of joints without interrupting traffic construction is obtained through numerical mechanics simulation and field test. The bond tensile strength of the joint material is measured by laboratory test. Then, combined with the bond tensile strength of the material and the stress state of the joint finite element, the construction scheme of uninterrupted cartoon is designed. Finally, the effectiveness of the construction technology is verified by the actual bridge.

关 键 词：桥梁工程 车桥耦合 振动环境 场地试验 数值模拟 施工技术 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]