Based On Stress Method Of Foundation Pit Supporting Structure To Safety And Finite Element Analysis Contrast

Human and geotechnical deal with to solve the food, clothing, helter and transportation to the relevant has several years old, has accumulated a wealth of experience。Thanks to modern engineering construction to keep the bigger, and deeper and higher, more heavy the direction of development, For geotechnical engineering has brought a series of new problems。The traditional, empirical geotechnical engineering technology, have less and less able to and contemporary engineering construction in quality, speed, environment, durability and safety requirements to adapt。The geotechnical engineering establish more complete system, more powerful theory, the more advanced technology, and accord with the objective law of operation method, geotechnical engineering technology from rising to science, using science to develop the technology, innovation technology, already is which way the wind blows。In recent years, as construction scale increasingly to high, heavy, deep, the development of the general direction, supporting project for the show more and more important and complicated。Supporting project is a involve engineering geology, hydrology geology, engineering structure, engineering construction the integrated system engineering with risk, complexity and dynamic characteristics。For the geotechnical engineering various effective method of supporting analysis, we can see that the basic types of geotechnical support can be divided into three sections:That is the traditional pile, the board, wall, supports; the new spray, anchor, nets, muscle; and active solid earth, water, monitoring, maintenance。They constitute the support of geotechnical engineering complete system, for the union complicated engineering specific conditions comprehensive selection applied to provide the scientific basis。The traditional slope stability analysis method is based on the slide on the assumption that, according to the force and moment balance, the calculation of safety factor, and then the safety coefficient is less than standard of safety of slope reinforcement。The defects of these methods in the stability analysis and design process of soil as the rigid body, no consideration within the soil stress-strain relationship, cannot analyze slope destroy the origin and development of the process, and no account of the soil and the retaining structures and the deformation of the common function of coordination。The traditional retaining method was not give full play to the shearing strength of soil, and with the active soil deformation increase, reinforcement effect weakens。And with the head to expand prestressed anchor slope stress remodeling, to the maximum use of the territories itself shear capacity, with a small cost the stability of the slope to keep。In the slope excavation on remodeling stress, can make the slope soil back to close to the stress of the excavation before, enhance the stability of the slope。This paper preliminary introduces the finite element software MIDAS/GTS function and its application in geotechnical engineering, through the MIDAS/GTS finite element software to simulate the foundation pit bracing, discuss the safety of the supporting structure, and the finite element simulation and theory calculation safety are compared and analyzed。...