| 饱和软土中打入式预制桩单桩承载力的时效性 |
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| 引用本文： | 叶为民,黄雨,唐益群,卢培军.饱和软土中打入式预制桩单桩承载力的时效性[J].岩土力学,2000,21(4):367-369. |
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| 作者姓名： | 叶为民 黄雨 唐益群 卢培军 |
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| 作者单位： | 1. 同济大学地下建筑与工程系，上海 200092
2. 上海今达置业中心，上海 200120 |
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| 摘 要： | 饱和软土中打入式预制桩承载力的时效性问题早已为学术界所共识，并已在工程实践中得到了验证。但对上海地区饱和软土层中的打入式预制桩的休止时间对单桩承载力的影响规律，尚待进一步研究。结合近期完成的一项实际工程的现场实测静载荷试验资料，对预制桩的静载荷试验的间歇时间问题进行了有益的探讨。饱和软土中的打入式预制桩，在沉桩两周后一定时间内，复压单桩极限承载力平均提高了将近单桩设计最大加载值的30％。
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| 关 键 词： | 打入式预制桩 间歇时间 饱和软土 承载力 时效性 |
| 文章编号： | 1000-7598-(2000)04-0367-03 |
| 修稿时间： | 2000年5月22日 |
Time-effect of bearing capacity of driven pile in saturated soil |
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| YE Wei-min,HUANC Yu,TANC Yi-qun,LU Pei-jun.Time-effect of bearing capacity of driven pile in saturated soil[J].Rock and Soil Mechanics,2000,21(4):367-369. |
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| Authors: | YE Wei-min HUANC Yu TANC Yi-qun LU Pei-jun |
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| Abstract: | Time-effect of bearing capacity of driven piles in saturated soft soil has been well known and it has been applied in the engineering practice effectively. But the determination of the time interval between driving and loading test of piles in saturated soft soil in Shanghai area is still a problem under consideration for engineering practice. This problem has been explored here with field monitoring data. In-situ test result shows that, for reload test, the ultimate bearing capacity of single pile is nearly 30% increments over the maximum design loading pressure, in a certain the period after 2 weeks from the driving day. |
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| Keywords: | driven pile time-interval saturated soft soil bearing capacity |
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