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| 钻孔灌注桩端承力有效利用技术 | |
| 引用本文： | 王笑难,金传宏,朱淑霞,张勇,孙百顺,张凤珍.钻孔灌注桩端承力有效利用技术[J].水道港口,2005,26(4):244-247. |
| 作者姓名： | 王笑难 金传宏 朱淑霞 张勇 孙百顺 张凤珍 |
| 作者单位： | 1. 交通部天津水运工程科学研究所,天津,300456 2. 中海油服股份有限公司,天津,300451 3. 海洋石油工程股份有限公司,天津300451 |
| 摘 要： | 超长钻孔灌注桩因受现施工工艺制约只能按摩擦桩使用,因沉渣落淤物影响端承力不能有效发挥;现成孔后置入钢制半封闭桩尖穿透沉渣层,可使灌注桩直接坐落在下卧持力层上,从而使端承力可充分发挥作用进而提高钻孔灌注桩的承载力与减少沉降量,也可缩短桩长、减少施工难度、降低工程费用。 |
| 关 键 词： | 钻孔灌注桩 半封闭桩尖 端承力有效利用 |
| 文章编号： | 1005-8443（2005）04-0244-04 |
| 收稿时间： | 2005-04-15 |
| 修稿时间： | 2005年4月15日 |
Effective utilization technology of end bearing capacity of bored pile |
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| WANG Xiao-nan,JIN Chuan-hong,ZHU Shu-xia,ZHANG Yong,SUN Bai-shun,ZHANG Feng-zhen.Effective utilization technology of end bearing capacity of bored pile[J].Journal of Waterway and Harbour,2005,26(4):244-247. | |
| Authors: | WANG Xiao-nan JIN Chuan-hong ZHU Shu-xia ZHANG Yong SUN Bai-shun ZHANG Feng-zhen |
| Institution: | 1. Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China; 2.China Oilfield Services Ltd., Tianjin 300451,China; 3. Offshore Oil Engineering Corporation Ltd.,Tanjin 300451, China |
| Abstract: | Ultra-long bored pile is only used as friction pile because of the present construction technology, and the end bearing capacity cannot play the role effectively because of the fallen grit and mud. The bored pile can lay directly on fallen capacity-holding layer when steel semi-closed pile end is layed into bore hole which can penetrate grit layer. This technology can make the end bearing capacity playing the role effectivety and improve the bearing capacity of bored pile and relieve settlement. It can shorten pile length, relieve construction difficulty, and save construction cost. |
| Keywords: | bored pile semi-closed pile end effective utilization of end bearing capacity |
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