摘要
Abstract
In order to improve the performance of multi-pile composite foundation,this paper takes a high-rise building as an example to de-sign a CFG pile+PHC pipe pile multi-pile composite foundation scheme,and analyzes the load-settlement curve of CFG single pile,compos-ite foundation and reinforced foundation through static load test.The results show that the settlement of CFG single pile increases with the in-crease of loading level.The ultimate bearing capacity of the three CFG single piles exceeds 1 240 kN,which meets the design requirements.The settlement of composite foundation increases rapidly at first and then slowly with the increase of applied stress.The settlement of the three groups of composite foundation after reinforcement is 12.33、13.86 and 12.07 mm,respectively.The bearing capacity characteristic values of the composite foundation after reinforcement meet the design requirements,indicating that the composite foundation after reinforcement by PHC pipe pile has obtained good reinforcement effect.关键词
地基基础/CFG桩/PHC管桩/静荷载试验/沉降曲线Key words
Foundation/CFG pile/PHC pipe pile/Static load test/Settlement curve分类
建筑与水利
