p-y曲线法在基坑围护结构中的应用

ZHENG Zhi-xiang; LIU Cheng-yu

doi:10.11988/ckyyb.20170721

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Journal of Changjiang River Scientific Research Institute ›› 2019, Vol. 36 ›› Issue (2) : 101-105. DOI: 10.11988/ckyyb.20170721

ROCK SOIL ENGINEERING

p-y曲线法在基坑围护结构中的应用

ZHENG Zhi-xiang¹, LIU Cheng-yu^1,2

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Abstract

In current researches, p-y curve is widely used to study the deformation properties of lateral thrust piles when surrounding soils are unexcavated, but is rarely applied to calculate the deformation of the ditch enclosure structure of deep foundation. With the nonlinear displacement of soil into consideration, the method of p-y curve is in accordance with the actual state of the inner soil which is compacted by the foundation ditch enclosure structure. In view of this, the displacement of the ditch enclosure structure of a practical engineering project was calculated by using p-y curve method, and was compared with measured result and the calculation result of the incremental analysis method for beam on elastic foundation to verify its rationality and superiority. Results unveiled that the lateral displacement calculated by p-y curve method is closer to measured displacement than the result calculated by the incremental analysis method for beam on elastic foundation. In addition, the displacement curve obtained by p-y curve method is in line with the actual deformation law of the ditch enclosure structure of deep foundation. Both theory and practice have proved that p-y curve method is rational in calculating the displacement of the ditch enclosure structure of deep foundation.

Key words

foundation pit / support structure / p-y curve / displacement / incremental analysis method for beam on elastic foundation

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ZHENG Zhi-xiang, LIU Cheng-yu. p-y曲线法在基坑围护结构中的应用[J]. Journal of Changjiang River Scientific Research Institute. 2019, 36(2): 101-105 https://doi.org/10.11988/ckyyb.20170721

References

[1] MATLOCK H. Correlation for Design of Laterally Loaded Piles in Soft Clay[C] ∥Proceedings of the 2^nd Offshore Technology Conference, Houston, Texas. April 22-24, 1970: 577-594.
[2] REESE L C, COX W R, KOOP F D. Analysis of Laterally Loaded Piles in Sand[C] ∥Proceedings of the 6^thOffshore Technology Conference, Houston, Texas. May 6-8, 1974: 473-485.
[3] STEVEN J B M, AUDIBERT J M E. Re-examination of p-y Curve Formations[C] ∥Proceedings of the 11^th Offshore Technology Conference, Houston, Texas. April 30-May 3, 1979: 397-403.
[4] 王国粹, 杨敏. 黏土中水平受荷桩基计算方法[J] .同济大学学报(自然科学版), 2012, (3): 373-378.
[5] 李卫超, 杨敏, 朱碧堂. 砂土中刚性短桩的p-y模型案例研究[J] .岩土力学, 2015, (10):2989-2995.
[6] 姚文娟, 吴怀睿, 程泽坤, 等.基于p-y曲线法的超长桩非线性数值分析[J] .岩土工程学报, 2011, (11):1683-1690.
[7] 黄茂松, 俞剑, 张陈蓉. 基于应变路径法的黏土中水平受荷桩p-y曲线[J] .岩土工程学报, 2015, (3):400-409.
[8] 张建伟, 刘汉龙, 戴自航. 分布荷载推力桩计算的p-y曲线法研究[J] .岩土力学, 2008, (12):3370-3374.
[9] 朱碧堂, 杨敏. 基坑支护结构弹塑性计算方法与m法的对比分析[J].岩土工程学报, 2006, (增1):1387-1394.
[10] 朱彦鹏, 魏升华. 深基坑支护桩与土相互作用的研究[J] .岩土力学, 2010, (9):2840-2844.
[11] 邓子胜, 邹银生, 王贻荪. 考虑位移非线性影响的深基坑土压力计算模型研究[J] .工程力学, 2004, (1):107-111.
[12] 杨光华.深基坑支护结构的实用计算方法及其应用[J] .岩土力学, 2004 (12) : 1885-1896.
[13] JGJ 120—2012, 建筑基坑支护技术规程[S].北京:中国建筑工业出版社, 2012.
[14] BROWN D A, REESE L C, O’NEIL M W. Cyclic Lateral Loading of a Large-scale Pile Group[J].Journal of the Geotechnical Engineering Division, ASCE, 1987, 113(11): 1326-1343.
[15] 朱碧堂. 土体的极限抗力与侧向受荷桩性状[D] .上海:同济大学, 2005.
[16] DB 29-202—2010,天津市建筑基坑工程技术规程[S].天津:天津市城乡建设交通委员会,2010.
[17] RANDOLPHM F. A Theoretical Study of the Performance of Piles[D] .Cambridge, UK: University of Cambridge, 1977.
[18] TROCHANIS A M, BIELAK J, CHRISTIANO P. Three-dimensional Non-linear Study of Piles[J].Journal of Geotechnical Engineering Division, ASCE, 1991, 117(3):429-447.