Application of a New Multi-functional Frame Shed Tunnel
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摘要: 为优化山地城镇傍山道路的结构设计,解决受山体地形影响的挖方路基边坡的支护设计难题,提出一种借鉴了双排抗滑桩和建筑框架结构的抗滑棚洞方案。对该棚洞的受力特征进行阐述,并依托具体工程项目的应用,对该棚洞结构与传统路基支挡结构进行技术对比,对其结构计算和施工过程模拟的方法进行论述。研究表明,这种棚洞结构有很强的侧向刚度,各梁、柱结构能整体发挥受力作用,能够通过“逆作法”获得更好的施工安全性,可为城市公共空间的开发与利用提供新的方案。Abstract: In order to optimize the structural design of mountain side road in mountainous towns and solve the problem of support design of excavated subgrade slope affected by mountain terrain, an anti-slide shed tunnel scheme with double row anti-slide piles and building frame structure is proposed. According to the application of specific engineering projects, the stress characteristics of the shed tunnel was analyzed, and the techniques of the shed tunnel structure and the traditional subgrade retaining structure were compared. The structural calculation and construction process simulation were discussed. The research shows that the shed tunnel structure has strong lateral stiffness, and each beam and column structure could bear force as a whole. The construction safety could be achieved because of top-down method, and new scheme for the development and utilization of urban public space are provided.
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Key words:
- shed tunnel /
- force analysis /
- frame structure /
- finite element simulation
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表 1 地质参数
项目 重度/(kN·m−3) 内摩擦角 /(°) 黏聚力 /kPa 填土 19.5 25 10 强风化岩体 23 30 50 中等风化泥岩 25.1 30.56 473 -
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