支护桩与地下主体结构相结合的永久支护结构!.pdfVIP

Vol No Journal of A rchitecture and Civil Engineering M ar PLAXISD T U A Permanent Supporting Structure Combined with Supporting Piles and Underground Structure LI Lianx iang LIU Bing LI Xianun j Foundation Pit and Deep Foundation Engineering Research Center Shandong U niversity Jinan Shandong China School of Civil Engineering Shandong U niversity Jinan Shandong China Abstract In order to study the application value of f oundation pit support piles under permanent w orking conditions a permanent desig n w as made f or a pileanchor retaining structure in Jinan T he permanent supporting structure sy stem w as f ormed by the connection of supporting piles and the underg round structure through the supporting members w hich resisted the lateral pressure of f oundation pit Finite element simulation sof tw are PLAXIS D w as carried out f or each w orking condition of the structure T he result s show that the permanent supporting structure can eff ectively reduce the stress on the basement ex terior w all M ost of the soil pressure is born by the supporting piles T he basement w alls only burden earth lateral pressure produced by backfill soil so it s design just needs to meet the construction requirement Af ter changing the support the bending moment of the piles and the g round settlement around f oundation pit are largely increased thus the supporting piles and surrounding