大直径扩底桩尺寸效应的影响分析

张蕾; 高广运

大直径扩底桩尺寸效应的影响分析 English Version

张蕾,
高广运

同济大学岩土及地下工程教育部重点实验室,上海 200092

基金项目: 上海市重点学科项目(B308)

详细信息

作者简介:
张蕾 (1979 – ) ,女,黑龙江哈尔滨人,博士,主要从事扩底桩、基坑工程等方面的研究。

中图分类号: TU47
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出版历程
- 收稿日期: 2011-08-01
- 发布日期: 2011-12-06

Size effect of large-diameter belled piles

Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji Univesity, Shanghai 200092, China

摘要

摘要: 由于扩大头的存在,大直径扩底桩受力变形性状既有大直径桩的特点,又与普通大直径直身桩存在很大差别。与大直径直身桩相同,大直径扩底桩也存在尺寸效应,但比直身桩相比增加了扩径比的影响。本文从试验数据入手,分析不同扩径比的大直径扩底桩受力变形性状,研究端阻力与沉降量的关系,提出了扩底桩的尺寸效应影响系数。
- 大直径桩 /
- 大直径扩底桩 /
- 尺寸效应 /
- 端阻力 /
- 扩径比
Abstract: The loading and deformation behaviors of the large-diameter belled piles are different from and similar to those of straight large-diameter piles, because of their enlarged tip. Similar to the large-diameter bored piles the large-diameter belled piles have size effect, and but an increase of the ratio of the enlarged tip diameter to the shaft diameter. According to the test data, the load and deformation behaviors of large-diameter bored piles with different ratios of the enlarged tip diameter to the shaft diameter are analyzed, and the relationship between the tip resistance and the settlement is studied. Finally, the size effect coefficient of the large-diameter belled piles is proposed.
- large-diameter pile /
- large-diameter belled pile /
- size effect /
- tip resistance /
- ratio of enlarged tip diameter to shaft diameter

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参考文献(10)

[1]	王明恕 , 李伟 . 余祖国 . 大直径扩底桩随端径增加端阻力折减的讨论 [J]. 工程力学 , 2001( 增刊 ): 444 – 448. (WANG Ming-shu, LI Wei, YU Zu-guo. Discussion on modifying coefficient of end-bearing resistance of large diameter belled piles[J]. Engineering Mechanics, 2001(S0): 444 – 448. (in Chinese))
[2]	王明恕 , 郑晨勤 , 顾宪阁 . 再论大直径扩底桩端阻力折减问题 [J]. 沈阳建筑 , 2001(1): 1 – 4. (WANG Ming-shu, ZHENG Chen-qin, GU Xian-ge. Study on modifying coefficient of end-bearing resistance of large diameter belled piles[J]. Shenyang Architechure, 2001(1): 1 – 4. (in Chinese))
[3]	何颐华 , 王铁宏 . 大直径扩底桩承载力及沉降变形的计算 [J] . 建筑结构学报 , 1993, 14 (2): 63 – 71. (HE Yi-hua, WANG Tie-hong. Calculations for bearing capacity and settlement of large diameter belled pile [J] . Journal of Building Structure, 1993, 14 (2): 63 – 71. (in Chinese))
[4]	高广运 , 张蕾 , 滕延京 , 等 . 一种确定大直径扩底桩极限荷载的新方法 [J] . 岩土工程学报 , 2010, 32 ( 增刊 2): 55 – 58. (GAO Guang-yun. ZHANG Lei, TENG Yan-jing, et al. New method for determining failure load of large diameter belled piles [J] . Chinese Journal of Geotechnical Engineering, 2010, 32 (S2): 55 – 58. (in Chinese))
[5]	蒋建平 , 高广运 . 大直径扩底桩端阻力折减问题探讨 [J]. 岩土力学 , 2006, 27 (12): 2282 – 2288. (JIANG Jian-ping, GAO Guang-yun. Study on modifying coefficient of end-bearing resistance of large diameter belled piles[J]. Rock and Soil Mechnics, 2006, 27 (12): 2282 – 2288. (in Chinese))
[6]	MEYERHOF G G. Some problems in predicting behavior of bored pile foundation[C]// Proc 1st International Geotechnical Seminar on Deep Foundation on Bored and Anger Piles. [s.1]: [s.n.], 1988: 133 – 144.
[7]	黄强 . 大直径扩底桩承载力及变形计算 [J]. 建筑结构学报 , 1993, 15 (1): 67 – 77. (HUANG Qiang. Method for calculating bearing capacity and settlement of large-diameter belled piles[J]. Journal of Building Structures , 1993, 15 (1): 67 – 77. (in Chinese))
[8]	顾宝和 , 刘惠军 , 周红 . 扩底墩的研究和应用 [J] . 工程勘察 , 1984, 3 (2): 1 – 5. (GU Bao-he, LIU Hui-jun, ZHOU Hong. Investigation and application of belled pier [J] . Journal of Geotechnical Investigation & Surveying, 1984, 3 (2): 1 – 5. (in Chinese))
[9]	高广运 , 蒋建平 , 顾宝和 . 同场地扩底桩和直桩的对比研究 [J]. 岩石力学与工程学报 , 2005, 24 (2): 502 – 506. (GAO Guang-yun, JIANG Jian-ping, GU Bao-he. Comparative study on belled piles and equal-diameter piles in same site[J]. Chinese Journal of Rock Mechanics and Engineering , 2005, 24 (2): 502 – 506. (in Chinese))
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文章访问数: 1656
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大直径扩底桩尺寸效应的影响分析 English Version

作者简介: 张 蕾 (1979 – ) ,女,黑龙江哈尔滨人,博士,主要从事扩底桩、基坑工程等方面的研究。

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Size effect of large-diameter belled piles

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目录

作者简介:
张蕾 (1979 – ) ,女,黑龙江哈尔滨人,博士,主要从事扩底桩、基坑工程等方面的研究。