路基水毁冲失段应急锚拉框架结构计算方法研究  

Research on Calculation Method of Emergency Frame Structure for Rapid Repair Washout Section of Embankment

作　　者：陈洪凯[1] 李小明[1] 唐红梅[1] 

机构地区：[1]重庆交通大学岩土工程研究所,重庆市400074

出　　处：《公路》2016年第5期188-193,共6页Highway

基　　金：国家自然科学基金项目;项目编号41071017;2013年重庆高校创新团队建设计划资助项目;项目编号KJTD201305;重庆市"两江学者"计划专项经费资助;项目编号201309

摘　　要：沿河公路在山洪泥石流冲击作用下路基破坏缺失是山区公路典型水毁类型,其快速修复是应急救灾的重要技术保障。针对路基水毁冲失段公路交通应急通行迫切需求,研发了应急锚拉框架结构新技术,详细解读了应急锚拉框架结构的结构组成;采用超静定结构力学,建立了应急锚拉框架结构框架横梁的内力计算方法;基于极限平衡理论,建立了应急锚拉框架结构的锚固钢绳拉力和斜支撑结构内力计算方法。实例分析表明,所建立的路基水毁冲失段应急锚拉框架结构计算方法完备,具有较强的工程实用性。It is one of the typical highway water ruins triggered by debris flow and flood for washout section of embankment,and its rapid repair is a significant technique support in disaster emergency mitigation.In regard with the urgent demand for the traffic accessibility in washout segment of subgrade,a new technique is developed in this paper,namely the emergency frame structure,and its component is described in detail.Furthermore internal force calculation methods of beam of the emergency frame structure are established using hyperstatic mechanics,while calculation methods both pulling force of anchorage rope and internal forces of raking prop of emergency frame structure are based on the limit equilibrium theory.The analysis to practical examples proves the practicability of methods established in the paper.

关 键 词：道路工程 应急锚拉框架结构 计算方法 快速修复 路基水毁冲失 

分 类 号：U418.54[交通运输工程—道路与铁道工程]