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水泥土柱锤冲扩桩复合地基承载力试验研究

Experimental Study on the Composite Bearing Capacity of Hammer Impact-expanded Piles
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摘要 以在建工程宝兰客运专线兰州境内枢纽站试验段路基工程为依托,通过大量的室内试验和现场试桩,结果表明柱锤冲扩挤密桩复合地基在该湿陷性黄土区域地基处理中取得了良好的效果,冲扩桩挤密后的桩间土物理力学性质已有明显改善,黄土的湿陷性已完全消除,该试验并为兰州枢纽西站柱锤冲扩桩施工所需配合比提供了依据,具有一定的参考价值. Based on construction job of roadbed engineering in the Baolan Passenger railway in Lanzhou city hub,large number of laboratory and field tests show that the hammer impact-expanded piles in the collapsible loess area has achieved good results,the physical and mechanical properties of soil between piles have been significantly improved after density was increased by impact-expanded hammer,and the loess collapsibility has been completely eliminated. The Test results provide a basis for the construction job using hammer impact-expanded piles in Lanzhou city hub,and meanwhile,it has a useful reference.
作者 杨鹏 黄志军
出处 《兰州工业学院学报》 2014年第1期57-60,共4页 Journal of Lanzhou Institute of Technology
关键词 柱锤冲扩桩 复合地基 地基处理 column hammer impact-expanded piles composite foundation foundation treatment
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