|
At present , China's urban existing housing in many existing buildings with the conditions of adding layer , by layer and the transformation of savings investment , but also to ease the tensions of urban land use conflicts , so this study has a very important practical significance . First theoretical analysis for joint action at home and abroad on the basis of a university in a 20-storey experimental building project background, using ANSYS finite element analysis software to establish the upper structure , piled raft foundation and soil interaction calculation model , analysis raft settlement in the joint action of the upper structure , the thickness of the raft , pile length , pile diameter and other factors , the top of the pile reaction force , the internal forces of the raft and piled raft , load sharing ratio of the various components in the joint action of the mechanical properties and the mechanism of interaction between them ; maintain structure constant stress system , pumping pile formed within and outside the weak \under the combined action of piled raft foundation optimized design, feasibility analysis and design of the structure by layer ; Finally, the overall optimization of ideas , results obtained with the reference value .
|