土工合成材料加筋土柔性桥台施工关键技术  

Key Techniques for Constructing Flexible Geosynthetic Reinforced Soil Abutments

作　　者：余晓晓 徐超[1] 李昊煜[2] 左彬澧 YU Xiaoxiao;XU Chao;LI Haoyu;ZUO Binli(College of Civil Engineering,Tongji University,Shanghai 200092,China;Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei,Anhui 230088,China)

机构地区：[1]同济大学土木工程学院,上海市200092 [2]安徽省交通规划设计研究总院股份有限公司,安徽合肥230088

出　　处：《中外公路》2025年第1期153-158,共6页Journal of China & Foreign Highway

基　　金：科技部国家重点研发计划-政府间国际科技创新合作重点专项(编号:2016YFE0105800);安徽省交通控股集团科技项目(编号:JKKJ-2020-08)。

摘　　要：土工合成材料加筋土柔性桥台复合结构具有节约投资、减小桥头错台、抗震性能良好等优势,在国内外交通工程中展现出良好的应用前景。加筋土柔性桥台本质上是由小间距土工合成材料加筋土复合体构成,其施工质量和承重性能对工程的成败至关重要。为保证工程质量并对加筋土桥台建设过程进行探究,该文采用现场施工监测手段,依据无岳(无为—岳西)高速公路某车行天桥工程施工经验,论述加筋土柔性桥台施工质量控制措施,详细阐述加筋材料铺设、填料压实和面板砌块码放等关键技术。结果表明:现场桥梁架设状态安稳,证明桥台全过程施工质量良好,并发现筋材适度张拉固定有利于其性能发挥,根据现场条件选择适当压实工艺可兼顾施工效率与质量,外部支挡结构足以保证墙面垂直度。The flexible geosynthetic reinforced soil(GRS)abutments offer several advantages,including cost saving,reduced bridgehead misalignment,and good seismic performance,showing great potential for application in transportation engineering both in China and abroad.The flexible GRS abutment is essentially composed of a composite structure formed by closely spaced layers of geosynthetic reinforcement material,and the construction quality and load-bearing capacity are crucial to the success of the project.To ensure construction quality and study the construction process of flexible GRS abutments,a construction site monitoring method was adopted.Based on the experience from the construction of a vehicular overpass on the Wuwei‒Yuexi Expressway,the quality control measures for flexible GRS abutment construction were discussed,and key techniques such as reinforced material placement,compaction of fill materials,and stacking of facing panel blocks were described.The results show that the on-site bridge erection status is stable,proving good overall construction quality.Additionally,it is found that appropriate tensioning and fixing of the reinforcement material is beneficial to its performance.The selection of an appropriate compaction method based on site conditions can strike a balance between efficiency and quality,while the external retaining structure ensures the verticality of the wall.

关 键 词：土工合成材料 加筋土柔性桥台 施工质量 关键技术 

分 类 号：U445.559[建筑科学—桥梁与隧道工程]