| 卵石层中采用高频振动锤施打PHC管桩效果分析 |
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| 引用本文： | 简洪钰.卵石层中采用高频振动锤施打PHC管桩效果分析[J].福建工程学院学报,2006,4(1):12-15. |
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| 作者姓名： | 简洪钰 |
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| 作者单位： | 福建工程学院土木工程系,福建,福州,350007 |
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| 基金项目： | 福建省教育厅科技计划项目;福建省龙岩市科技计划 |
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| 摘 要： | 以一高频液压振动锤施打PHC管桩的施工实例，说明在以卵石为持力层的场地中可采用高频液压振动锤进行PHC管桩的沉桩施工；通过对桩的施工顺序、入土深度和单桩静载试验结果的差异情况分析，表明高频振动对无粘结粒状土层的深层振实效果非常明显，振动后卵石层桩端阻力得到明显的提高，但会存在工后桩长差异较大的现象。
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| 关 键 词： | 高频振动锤 高强管桩 深层振实 |
| 文章编号： | 1672-4348（2006）01-0012-04 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2005年10月10 |
Practical effect of PHC piles driven into gravel layer by high-frequency vibratory hammer |
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| Jian Hongyu.Practical effect of PHC piles driven into gravel layer by high-frequency vibratory hammer[J].Journal of Fujian University of Technology,2006,4(1):12-15. |
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| Authors: | Jian Hongyu |
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| Abstract: | Based on a practical project of piled foundation,it shows that high-strength concrete pipe piles(PHC piles) can easily be driven through scree or into gravel layer by high-frequency vibratory-driving systems.Analysis of different conditions,including driving sequence,driving depth and the results of static load test of single pile bearing capacity,indicates that high-frequency modern vibratory hammer can(effectively) impact non-cohesive soils;that the pile-tip resistance of the impacted gravel layer is markedly improved with difference in driven depth. |
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| Keywords: | high-frequency vibratory hammer high-strength concrete pipe pile deep soil compaction |
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