Effect Of Pre-Stressed Anchor On The Distortion Of Double-Row Piles Supporting Structure

With the massive construction of high-rise and even super high-ruse buildings,excavation of foundation pit become will be much deeper,and the project of deep base pit involving underground space also increase rapidly.Undoubtedly,this trend will promote the development of method,approach and and construction technique.Recently,it has been reported that the double-row piles supporting structure is economical and practical,which also meet our national conditions.Due to synthesize the merits of double-row piles and anchor,the double-row piles supporting structure is characterized by small deformation,convenient in construction and good economic benefit,which has been verified by the practical application in Zhengzhou city,Henan province.However,due to lack of fundamental theory and research,the principle of double-row piles supporting structure is still not clear,which hinders the development of this supporting structure.This paper focused on the research of simulation and practical application of the double-row piles supporting structure in construction site.Some key points were as follows:(1)By reviewing the researches of double-row piles supporting structure,this paper proposed some problems that are still to be resolved.(2)On the basis of current computational method,this paper researched the change of stress on the double-row piles,the synergism of piles and anchor and so on.(3)By the optimization design in simulation software,this paper chose a reasonable double-row piles supporting structure.(4)The rationality of the chosen double-row piles supporting structure was verified by the practical application in Zhengzhou construction site.