Spoke Method Of Soil-nail Bracing Structure And Its Optimization

As a new bracing system in deep pits, soil-nail is applied more and more widely. However, the mechanism of soil-nail has not been known well, either has the effect between the nail and the soil. There are still some problems to be solved in the inner stability analysis of soil-nail bracing system.Based on the study of the deformation of the soil-nail bracing system and the force in the nail which is in the construction and after the construction, this paper analyses the mechanism of the soil-nail system and the effect between the soil and the nail. Then, various method of inner stability analysis are introduced and appraised. What is more, this paper proposes a new method of inner stability analysis which is called spoke method of soil-nail bracing system.when the safety coefficient is deduced, the radial direction equilibrium equation, the tangent direction equilibrium equation and the whole body equilibrium equation are used. After that, an optimization technology is introduced to optimize it. After studying a real project by the spoke method and the optimization technology, this paper gets some usefull results.