| 高速铁路CFG桩复合地基现场试验对比研究 |
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| 引用本文： | 朱明,吴耀宗.高速铁路CFG桩复合地基现场试验对比研究[J].路基工程,2010,0(4):91-93. |
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| 作者姓名： | 朱明 吴耀宗 |
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| 作者单位： | 西南交通大学土木工程学院，成都610031 |
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| 摘 要： | 结合现场试验，研究了柔性基础下采用CFG桩帽网复合地基和CFG桩桩板复合地基的工作性状，并对二者的地基沉降和桩土应力比进行了对比分析。试验结果表明:复合地基帽网比桩板的沉降大；CFG桩复合地基桩土应力比随着荷载增加而增大，当加载结束后，桩土应力比趋于平缓；稳定后，帽网复合地基的桩土应力比为516，荷载分担比为62 %，桩板复合地基的桩土应力比为663，荷载分担比为79 %；CFG桩桩板结构的整体特性优于桩帽结构。
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| 关 键 词： | CFG桩 桩网结构 桩板结构 复合地基 沉降 桩土应力比 |
| 收稿时间： | 2019-11-06 |
Comparative Study on CFG Pile Composite Foundation of High-speed Railway Based on Site Test |
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| Authors: | ZHU Ming WU Yao-zong |
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| Affiliation: | (School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Combined with site test,this paper studies the performance of CFG pile-net reinforced composite foundation and CFG pile-slab reinforced composite foundation under flexible base,and carries out comparative analysis on foundation settlement and pile soil stress ratio.It is indicated from the result that pile-net reinforced composite foundation has heavier settlement than pile-slab reinforced composite foundation;pile soil stress ratio of CFG pile composite foundation increases with the increase of load;after it is loaded,pile soil stress ratio trends to milden;after stabilized,pile soil stress ratio of pile-net composite foundation is 5.16 and load sharing ratio is 62 %;for pile-slab composite foundation,they are separately 66.3 and 79%.Therefore,the overall performance of CFG pile-slab structure is better than that of pile-net structure. |
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| Keywords: | CFG pile pile-net structure pile-slab structure composite foundation settlement pile soil stress ratio |
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