公路隧道装配式仰拱研发现状与应用前景分析  

Research Status and Application Prospect Analysis of Prefabricated Inverted Arch for Highway Tunnel

作　　者：李科[1] 江星宏 胡学兵[1] 王永康 刘东星 蒋顺龙 LI Ke;JIANG Xinghong;HU Xuebing;WANG Yongkang;LIU Dongxing;JIANG Shunlong(China Merchants Chongqing Communications Technology Research&Design Institute Co.,Ltd.,Chongqing 400067;School of Researches and Safety Engineering,Chongqing University,Chongqing 400044;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074;Shandong Huayu University of Technology,Shandong Dezhou 253034)

机构地区：[1]招商局重庆交通科研设计院有限公司,重庆400067 [2]重庆大学资源与安全学院,重庆400044 [3]重庆交通大学土木工程学院,重庆400074 [4]山东华宇工学院,山东德州253034

出　　处：《公路交通技术》2024年第6期103-113,共11页Technology of Highway and Transport

基　　金：重庆市建设科技计划项目(城科字2022第1-6号);广东省科技计划项目(2021B1111610002);重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX0811);浙江省交通运输厅科技计划项目(2023002)。

摘　　要：仰拱是隧道重要下部结构,针对公路隧道仰拱常见缺陷(仰拱深度不足、厚度不足等)对结构承载安全和交通运行的影响,采用调研与精细化仿真相结合的方法,对国内外不同时期、不同类型装配式仰拱结构进行研究,分析了装配式仰拱的发展历程与趋势,总结了各类型仰拱在制备难度、施工难度、质量保障、功能性等方面的优缺点、适用性及应用前景。通过精细化仿真分析发现,仰拱中部局部加厚和下部垫块注浆的特殊设计可显著改善仰拱受力状态,提高承载性能;结合工程需求,提出了装配式仰拱结构在定位安放、回填灌浆、管片连接、结构设计等方面的注意事项。研究结果为隧道装配式仰拱结构的选型与优化设计提供了科学支持,有助于提升仰拱整体性能与结构稳定性。The inverted arch is a crucial substructure of a tunnel.Common defects such as insufficient depth and thickness of the inverted arch can affect the structural load-bearing safety and smooth traffic operation.This paper investigates various types of prefabricated inverted arch structures from different periods and regions both domestically and internationally,analyzes the development history and trends of prefabricated inverted arches,and summarizes the advantages,disadvantages,applicability,and application prospects of different types of prefabricated inverted arches in terms of preparation difficulty,construction difficulty,quality assurance,and functionality,in combination with survey and detailed simulation.Through detailed simulations,it is found that thickening the middle section and grouting the cushion blocks of the prefabricated inverted arch can significantly improve the stress state and enhance load-bearing performance.Based on engineering requirements,points for attention in the positioning and placement,backfill grouting,segment connection,and structural design of prefabricated inverted arch structures are proposed.The research results provide support for the selection and optimization design of prefabricated inverted arch structures in tunnels.

关 键 词：隧道 装配式仰拱 发展历程 承载性能 适用条件 应用前景 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]