| With the development of economy,houses,roads,railways and other projects construction is increasing,cut and fill soil works are increasing,leading to the number of artificial marginal slope increases.Therefore,how to can not only ensure the safety of the slope engineering,reduce engineering accidents,and can save investment,shorten the construction period is an arduous and urgent task.As one of the main measures of prevention and control of slope,anti-slide pile is widely used in the prevention and control of slope engineering,but by the reason of the imperfect theory of anti-slide pile design,designers often rely on experience in practice,the design subjectivity and conceptions.Therefore,in order to make the anti-slide pile in prevention and control of slope engineering design to achieve the double purpose of safety and economy,it is necessary to research and discuss to the optimization design of anti-slide pile.This paper based on the Yijun County Wanshou square slope as the research object,combined with its geological environment background,analyzed and disscussed the stability of the slope,selection of its prevention and control plans,and the optimization design of anti-slide pile,etc,obtained the following main conclusions and results:(1)Summarizing the slope stability and slope optimization theory research status and development trend at domestic and abroad in this present time,it is entirely possible and very meaningful what mathematical optimization algorithm is introduced into slope prevention engineering optimization design.(2)Combining with Wanshou Square slope’s geological environment background and its characteristics,putting forward the main factors of the slope stability.(3)Using transfer coefficient method and FLAC3 D numerical simulation of two kinds of methods to analyze the stability of Wanshou Square slope,obtaining the result what Wanshou Square slope is instability and needs prevention and control in a timely manner,two methods are consistent.Therefore,combining the two methods to analyze slope stability is very meaningful in the stability of the slope analysis.(4)Combining with Wanshou Square slope’s geological environment background,putting forward three kinds of comprehensive treatment plan,and using fuzzy comprehensive judgment method,getting the results what the anchor rope lattice + cantilever anti-slide pile and anchor anti-slide pile and surface drainage is the most economical and reasonable solution.(5)Based on the middle slope of Wanshou Square slope as the background,using FLAC3 D numerical simulation to analysis it,discussing the anti-slide pile’s anti-sliding performance change in different pile spacing,pile section size and the anchoring depth.(6)Putting forward the optimizing design of anti-slide pile objective function and constraint conditions.(7)In the process of slope optimization design and calculation,introducting the soil arch effect theory,and combining with engineering experience to solve the optimal pile spacing;Introducing genetic algorithm,to solve the objective function,getting the optimal coss section width,cross section height and anchoring depth. |
