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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。
The failure of subgrade destruction under the impact of flash flood and debris flow along the river is the typical type of water damage in mountainous highway. The rapid repair is an important technical support for emergency relief. Aiming at the urgent need of road traffic emergency passage in flood damaged section of roadbed, a new technology of emergency anchorage frame structure was researched and developed. The structure of emergency anchorage frame structure was explained in detail. By using statically indeterminate structure mechanics, the emergency anchorage frame structure Based on the theory of limit equilibrium, the method of calculating the internal force of the anchoring rope and the inclined support structure of the emergency anchorage frame structure is established. The case study shows that the calculation method of the emergency anchoring frame structure of the subgrade destroyed by water loss is complete and has strong engineering practicability.