钢筋混凝土桥梁棚洞一体化结构研究

Research on Integrated Structure of Reinforced Concrete Bridge and Shed Tunnel

传统的危岩落石防护棚洞构造简单、适用,但存在自重大、陡峻山坡施工不便、设置范围受限等缺点。研究从轻质高耗能缓冲材料入手,通过试验及数值模拟分析选定合理的缓冲层结构;通过大比例尺落石冲击模型试验,归纳总结冲击能量与冲击力的转化关系;在上述研究成果基础上,研发了新型钢筋混凝土桥梁棚洞一体化结构。

The traditional protective shed tunnel for dangerous rocks and falling rocks has simple structure and good applicability,but also some disadvantages,such as large dead weight,inconvenient construction on steep slopes,limited setting range and so on.The research starts with the lightweight and high energy-consuming buffer materials and selects reasonable buffer layer structure through tests and numerical simulation analysis;through large-scale falling rocks impact model test,the transforming relationship between impact energy and impact force is summarized;on the basis of the above research results,a new type of integrated structure of reinforced concrete bridge and shed tunnel is developed.