六车道桥隧相接落石防护技术研究

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摘  要：如何有效地控制落石灾害，对确保项目施工安全及运营安全至关重要。基于大跨度桥隧相接实例，针对性地提出系统的落石防护措施;通过数值模拟分析，不受石头冲击作用下钢棚架结构满足规范要求，并提出满足不同设防落石冲击需求的钢拱架参数，为类似工程提供借鉴性的参考。

关键词：落石防护;落石冲击力;大跨度钢结构棚架;屈曲;结构分析

中图分类号：U451       文献标志码：A          文章编号：2095-2945（2024）09-0189-04

Abstract： How to effectively control the rockfall disaster is very important to ensure the construction safety and operation safety of the project. Based on the example of the connection of long-span bridges and tunnels， the systematic rockfall protection measures are put forward， and the numerical simulation analysis shows that the steel scaffolding structure without stone impact meets the requirements of the code. The steel arch parameters to meet the requirements of different anti-rockfall impact are put forward， which provides a reference for similar projects.

Keywords： rockfall protection; rockfall impact force; long-span steel structure scaffolding; buckling; structural analysis

随着国家基础建设的快速发展，西部地区桥梁、隧道相连实例越来越多，主要分为桥梁与隧道相接、桥梁主体结构深入隧道、桥梁与隧道间设置短路基。（剩余5755字）