复合土钉支护作用机理研究

Study on the Composite Soil Nailing Working Mechanism

复合土钉支护是在土钉支护基础上发展起来的用于基坑支护或提高边坡稳定性的一种新技术,它联合应用了其它支护措施,弥补了土钉支护和传统锚固的缺点,能够满足新的支护要求。但是由于这项技术起步较晚,对其认识还不很清楚,没有形成完整的理论体系,为了更全面的了解复合土钉支护,使这一技术有着更广泛的应用空间,归纳总结了复合土钉支护的支护型式,并分析了不同型式的支护原理,阐述了复合土钉支护的作用机理,主要为分担荷载、止水抗渗、传递荷载、增强局部稳定和超前加固等作用。

Composite soil nailing, based on the soil nailing, which takes over many advantages and remedies a number of defects and application restrictions of soil nailing system, has been made widely application in excavation retaining engineering or slope stabilization. Because it's a new technique, knowledge of force bearing situation of the composite system is still not very clear, design of the system is short of necessary analysis methods and the theoretical system is imperfect. In order to know it better, structure types, constructing methods and using conditions for the composite system were summed up and its working mechanism was analyzed. Its working mechanism will be behaved as sharing loads, waterproof and impermeability, loading transfer, local reinforcement and pre-reinforcement.