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考虑桩身钢筋混凝土非线性的单桩水平响应分析

DOI: 10.3969/j.issn.1006-7043.201402032

Keywords: 水平荷载|钢筋混凝土桩|桩土相互作用|非线性应力应变关系

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Abstract:

为评估地震条件下建筑和桥梁桩基础水平承载性能, 给出了考虑桩身钢筋混凝土非线性的单桩水平响应的计算方法。该方法是基于非线性Winkler地基梁, 利用应变楔形体模型计算地基反应模量, 桩身钢筋混凝土非线性是通过将桩截面划分成多个纤维单元, 并将钢筋纤维单元和混凝土纤维单元赋予不同的非线性应力应变关系来实现的。结果表明:计算出的桩头挠度及挠度分布与实测值吻合较好, 且能够反映钢筋混凝土桩抗弯刚度随着水平荷载增大的变化趋势, 在钢筋混凝土桩初始加载阶段, 桩截面上拉应力和压应力呈对称分布, 随着水平荷载的增大, 受拉侧混凝土开裂, 中性轴向受压侧移动。

References

[1]  REESE L C. Handbook on design of piles and drilled shafts under lateral load[R]. Austin: University of Texas at Austin, 1984.
[2]  REESE L C, WANG S T. Analysis of piles under lateral loading with nonlinear flexural rigidity[C]//Proceedings of International Conference on Design and Construction of Deep Foundation. Washington D C, 1994.
[3]  HUANG A B, HSUEH C K, O’NEILL M W, et al. Effects of construction on laterally loaded pile groups[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2001, 127(5): 385-397.
[4]  中华人民共和国交通运输. JTS 167-4-2012, 港口工程桩基础规范[S]. 北京:人民交通出版社, 2012.JTS 167-4-2012. Code for Pile Foundation of Harbor Engineering[S]. Beijing: China Communications Press, 2012.
[5]  ASHOUR M, NORRIS G, SHAMSABADI A. Effect of the non-linear behavior of pile material on the response of laterally loaded piles[C]//Proceedings of 4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. San Diego, USA, 2001.
[6]  LIN S S. Use of filamented beam elements for bored pile analysis[J]. Journal of Structural Engineering, 1997, 123(9): 1236-1244.
[7]  XU L Y, CAI F, WANG G X, et al. Nonlinear analysis of laterally loaded single piles in sand using modified strain wedge model[J]. Computers and Geotechnics, 2013, 51: 60-71.
[8]  徐令宇. 桩基础水平响应计算方法及其抗液化性能研究[D]. 大连:大连理工大学, 2013: 26-27. XU Lingyu.Computation method for response of laterally loaded piles and liquefaction-mitigation performance of piled foundation[D]. Dalian: Dalian University of Technology, 2013: 26-27.
[9]  NORRIS G. Theoretically based BEF laterally loaded pile analysis[C]//Proceedings of the 3rd International Conference on Numerical Methods in Offshore Piling. Paris, France, 1986: 361-386.
[10]  ASHOUR M, NORRIS G, PILLING P. Lateral loading of a pile in layered soil using the strain wedge model[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1998, 124: 303-315.
[11]  MANDER J, PRIESTLEY M, PARK R. Theoretical stress-strain model for confined concrete[J]. Journal of Structural Engineering, 1988, 114(8): 1804-1826.
[12]  CHEN W F, DUAN L. Bridge Engineering: Seismic Design[M]. Boca Raton : CRC Press, 2003: 14
[13]  O’NEILL M W, HUANG A B. Comparative behavior of laterally loaded groups of bored and driven piles in cohesionless soil[C]//Proceedings of The 13th International Offshore and Polar Engineering Conference., 2003: 25-30.
[14]  王勖成 有限单元法[M]. 北京:清华大学出版社, 2012:167-186.WANG Xucheng. Finite element method[M]. Beijing: Tsinghua University Press, 2012: 167-186.
[15]  CONTE E, TRONCONE A, VENA M. Nonlinear three-dimensional analysis of reinforced concrete piles subjected to horizontal loading [J]. Computers and Geotechnics, 2013, 49: 123-133.
[16]  HSUEH C K, LIN S S, CHERN S G. Lateral performance of drilled shaft considering nonlinear soil and structure material behavior[J]. Journal of Marine Science and Technology, 2004, 12(1): 62-70.

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