Optimization Design Of Pile Anchor Support Based On MIDAS

Foundation pit engineering is an ancient and bear the imprint of the times of geotechnical engineering subject,according to different engineering geological conditions to design a safe,reliable and economical foundation pit supporting plan is one of the many experts and scholars are studying the subject.Deep foundation pit engineering is a comprehensive and high system engineering which interacts each other,and occupies an important position in high-rise buildings.With the progressive development of city,the speed of growth in population density,the number of high-rise buildings continue to increase,then lead to the deep foundation pit engineering also continue to increase,in the form of foundation pit supporting is also more and more;as the scale of the foundation pit engineering is more and more big,the surrounding environment is more and more complex,the construction space is getting smaller,that lead to design and construction of deep foundation pit engineering is more and more difficult and become more and more high to the requirement of design and construction personnel.How to choose a safe,economical,reasonable and reliable plan of foundation pit support from many design subjects is still a difficult problem,so it is of practical significance to study deep foundation pit engineering.Deep foundation pit engineering involves many specialities and fields,which has a strong knowledge,technical and comprehensive.Moreover,deep foundation pit engineering has many uncertain factors,so it has a strong practicality and personality.With the development of deep foundation pit engineering,the rational selection and optimization design of foundation pit support plan are more and more demanding,and deep foundation pit engineering is more and more challenging.Taking the foundation pit support project of phoenix culture square in hefei city as an example,this paper selects the suitable foundation pit support plan according to the surrounding environment and soil quality,that combined with previous engineering experience.Based on the calculation of foundation pit support plan,the software of the deep foundation pit is used to correct the inadequacies and then simulate the actual engineering with MIDAS/GTS finite element software to get the internal force and deformation diagram.The above results are compared and analyzed,and the foundation pit support plan is optimized and improved.The optimization of the plan not only protect the surrounding environment of foundation pit but also reduce project cost,which can bring better environmental effect,economic benefit and social benefit.The main contents of this paper are as follows:(1)It briefly elaborated the paper research background,deep foundation pit engineering in the domestic and foreign development present situation,development trend of the deep foundation pit and the characteristics of deep foundation pit engineering as well as our country some problems in design and construction of deep foundation pits,it also illustrates the main contents in this paper,we study and research train of thought.(2)This paper briefly introduces the commonly used in deep foundation pit supporting forms and characteristics,and introduced the engineering example,according to the design principle of foundation pit supporting and connecting with the surrounding environment,the engineering geological conditions and previous engineering experience to select proper foundation pit supporting scheme.(3)This paper briefly introduces the theory is the theory of lizheng software,and the principle is lizheng software selection plan for checking,look to whether meet the specification requirements,to meet the requirements of local correct them,finally it is concluded that the internal force and deformation of the retaining structure diagram and brief analysis.(4)In this paper,MIDAS/GTS software was briefly introduced and the actual engineering was simulated by MIDAS/GTS,and the force and deformation of the enclosure structure were predicted,and the internal force and deformation diagram of the enclosure structure were derived.(5)To manage with lizheng software and MIDAS/GTS results compared with the results of field monitoring analysis,on the premise of meet the safety of foundation pit design is optimized,the optimization scheme reduces the cost and achieves the goal of the optimization design.