Study On The Mechanism Of Reticulated Shell Structure And The Lower Structure Interaction Under The Action Of Big Area

Large storage structure has big span(60m～150m)、length(100m～400m)、height(30m～60m)、ground load (40t/m2～100t/m2). This paper designed one of the most common form (put four cone cylindrical reticulated shell) as the research object, analyzes the large-area ground heap load’s influence on foundation, foundation deformation are analyzed for different structures of bearing base (end bearing pile and friction pile) effect, finally analyzes the deformation of pile foundation on the effects of the upper reticulated shell.By reading a large number of literature, analyzes the impact of the large stack of foundation; In the vertical direction of the Rankine’s earth pressure theory load transformed the active earth pressure of horizontal direction; With Lizheng geotechnical software respectively calculated the end bearing pile and friction pile under different ground load of lateral shift of pile top; Using the ansys finite element software analyzed two kinds of pile’s influence on the upper reticulated shell structure under different conditions.Got the following conclusion:the large stack can produce additional stress and the foundation uneven settlement, which can produce horizontal thrust and downward to pile negative friction; When pile in end bearing pile, the single ground uniformly distributed load of1650kn/m2or intermediate load of545kn/m2, on both sides of the ground uniformly distributed load of800kn/m2or intermediate load of545kn/m2, the structure of normal use limit; When pile in friction pile, the single and on both sides of the load of260kn/m2,the structure of normal use limit; Large heap load case, the end bearing pile has advantages than friction pile.