Lizheng Software Analysis And Finite Element(MIDAS/GTS) Simulation For Double Row Pile Retaining Structure

With the development of social economy, the population, fixed and mobile facilities are becoming more and more intensive, which leads to the birth and development of foundation pit engineering. As a new way of supporting- double row pile supporting structure, in recent years has been widely used at home and abroad.This article in the domestic and foreign drprs research foundation,combined with the actual engineering case, using Lizheng software of double row piles supporting structure is designed and calculated and using finite element(MIDAS/GTS) of double row piles supporting structure of the soil should force, deformation and displacement of pile body of simulation analysis, and carry on the contrast analysis of two methods results. Research results show that:(1) Lizheng software has a design and calculation of convenient and simple operation, time saving, etc., but basic theory is not mature, the design and calculation have certain limitations, such as before and after the row pile length, pile diameter,pile spacing and stiffness must be consistent, and the consideration of the double row piles arrangement also has certain restrictions.(2)Finite element(MIDAS/GTS) method can overcome the limitations of Lizheng software of double row pile design calculation, and the simulation results and the actual monitoring data compared with smaller error, especially excavation surface below, finite element simulation and Lizheng software calculation of pile body in the change, more in line with the actual situation.According to the need of practical engineering, the application of finite element method simulation different back row pile of pile length, pile spacing, pile diameter and stiffness, the change on the displacement of the pile analysis, and choose the optimal row piles of pile length,pile spacing, which can ensure the safety of the excavation, and can save the cost of materials and construction.