| 某工程水泥搅拌桩复合地基的载荷试验研究 |
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| 引用本文： | 赵宏华,韩选江.某工程水泥搅拌桩复合地基的载荷试验研究[J].特种结构,2009,26(4):45-49. |
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| 作者姓名： | 赵宏华 韩选江 |
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| 作者单位： | 南京工业大学,土木工程学院,210009 |
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| 基金项目： | 江苏兴化设计研究院项目基金 |
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| 摘 要： | 通过现场复合地基静载荷试验和桩土应力比的测试，探讨了水泥土复合地基桩距拉大以后的承载性状和桩土应力比。试验结果表明：复合地基在“有效桩长”范围内，承载力可以满足要求，并形成“加筋垫层”，有效扩散应力，使沉降变形减小；桩土应力分布合理，使桩和土体各部分的承载潜能均可以得到较好地发挥，从而使复合地基可以较好地满足承载和沉降的要求。
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| 关 键 词： | 水泥土搅拌桩 复合地基 桩土应力比 加筋垫层 |
Load Experimental Study for an Engineer Composite Foundation with Cement Mixing Piles |
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| Zhao Honghua,Han Xuanjiang.Load Experimental Study for an Engineer Composite Foundation with Cement Mixing Piles[J].Special Structures,2009,26(4):45-49. |
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| Authors: | Zhao Honghua Han Xuanjiang |
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| Affiliation: | ( College of Civil Engineering Nanjing University of Technology, 210009, China) |
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| Abstract: | Based one actural project, the bearing characteristic and pile-soil stress ratio of composite foundation with cement mixing piles are fully investigated when pile spacing becomes larger by means of the static load test and pile-soil stress testing. The testing results shows ： composite foundation can meet the required bearing capacity, and form ＂reinforced cushion＂ to diffuse additional stress among the ＂effective pile length＂, so that the settlement becomes little; reasonaable pile-soil stress ratio distribution brings the bearing capacity potential of piles and soil into play. Therefore the bearing capacity and rational settlement of composite foundation are well satisfied. |
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| Keywords: | Cement mixing pile Composite foundation Pile-soil stress ratio Reinforced cushion |
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