可液化土中劲芯复合桩的地震响应特征

刘涉川; 王安辉; 章定文; 林文丽

doi:10.11835/j.issn.2096-6717.2021.014

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可液化土中劲芯复合桩的地震响应特征

土木工程 | 更新时间：2022-11-07

- 可液化土中劲芯复合桩的地震响应特征
- Seismic response of strength composite piles in a liquefiable soil
- 土木与环境工程学报 2022年44卷第6期页码：42-51
- 作者机构：
  
  东南大学交通学院，南京 211189
- 作者简介：
  
  刘涉川（1997- ），男，主要从事地基处理研究，E-mail：liushechuan@seu.edu.cn。
  章定文（通信作者），男，教授，博士生导师，E-mail：zhangdw@seu.edu.cn。
- 基金信息：
  
  国家自然科学基金(52078129)
- DOI：10.11835/j.issn.2096-6717.2021.014
  中图分类号： TU473.1
- 收稿：2020-10-23，
  
  纸质出版：2022-12-30
- 稿件说明：
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刘涉川,王安辉,章定文等.可液化土中劲芯复合桩的地震响应特征[J].土木与环境工程学报,2022,44(06):42-51.

LIU Shechuan,WANG Anhui,ZHANG Dingwen,et al.Seismic response of strength composite piles in a liquefiable soil[J].Journal of Civil and Environmental Engineering,2022,44(06):42-51.
刘涉川,王安辉,章定文等.可液化土中劲芯复合桩的地震响应特征[J].土木与环境工程学报,2022,44(06):42-51. DOI： 10.11835/j.issn.2096-6717.2021.014.

LIU Shechuan,WANG Anhui,ZHANG Dingwen,et al.Seismic response of strength composite piles in a liquefiable soil[J].Journal of Civil and Environmental Engineering,2022,44(06):42-51. DOI： 10.11835/j.issn.2096-6717.2021.014.

摘要

劲芯复合桩是将预制混凝土管桩插入水泥土桩中复合而成的新型桩基。通过振动台模型试验及有限差分程序FLAC3D数值模拟分析，研究可液化地基中劲芯复合桩的地震响应。利用模型试验结果验证数值模型的准确性和可靠性，进而通过参数分析讨论水泥土桩桩径、桩长、剪切模量等因素对可液化土—复合桩—上部结构地震响应的影响规律，定量评价水泥土桩加固对场地抗液化性能及桩基弯曲破坏的影响特征。结果表明：增大水泥土桩桩径和桩长可有效提高复合桩的抗震性能；增大水泥土剪切模量对复合桩抗震性能的提高有限；桩基在桩头附近或水泥土与可液化砂土交界处易产生较大的弯矩响应，该部位应采取必要的抗震构造措施。根据研究结果，提出了可液化地基中劲芯复合桩的抗震设计要点。

Abstract

Strength composite pile is a new type of pile formed by inserting a precast concrete pipe pile into soil-cement column. A series of shaking table model tests and finite difference analysis using FLAC3D were carried out to examine the seismic response of strength composite pile in a liquefiable ground. The accuracy and reliability of the numerical model were verified by the model testing results

and the effect law of diameter

length and modulus of soil-cement columns on the seismic response of sand-composite pile-superstructure were clarified. In addition

the anti-liquefaction performance of liquefiable ground and the bending failure of composite piles were evaluated. Results show that increasing the diameter and length of soil-cement column can effectively improve the seismic performance of composite pile. Increasing the shear modulus of soil-cement column to improve the seismic performance of composite piles is limited. A large moment response may occur in the pile near pile head or at the interface of cement-improved soil and liquefiable sand

so necessary seismic structural measures should be considered at the part. Based on the evaluation results

the key points of seismic design for composite piles in liquefiable soil were proposed.

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Keywords

references

TOKIMATSU K , OH-OKA H , SATAKE K , et al . Effects of lateral ground movements on failure patterns of piles in the 1995 Hyogoken-Nambu earthquake [C]// Proceedings of a Speciality Conference , Geotechnical Earthquake Engineeringand Soil Dynamics III , ASCE Geotechnical Special Publication, 1998 : 1175 - 1186 .

BERRILL J B , CHRISTENSEN S , KEENAN R P , et al . Case study of lateral spreading forces on a piled foundation [J]. Géotechnique , 2001 , 51 ( 6 ): 501 - 517 .

徐宁 , 张建伟 , 李荣翔 . 玻璃纤维增强复合桩水平承载特性试验与数值模拟 [J]. 土木建筑与环境工程 , 2018 , 40 ( 5 ): 9 - 15 .

XU N , ZHANG J W , LI R X . Test and numerical study on the bearing capacity of GFRP composite pile under lateral loadings [J]. Journal of Civil , Architectural & Environmental Engineering, 2018 , 40 ( 5 ): 9 - 15 . (in Chinese)

李炜 , 胡波 , 李波 , 等 . 大直径加翼单桩水平承载性能离心模型试验研究 [J]. 岩石力学与工程学报 , 2015 , 34 ( 4 ): 821 - 827 .

LI W , HU B , LI B , et al . Centrifuge model tests on horizontal bearing capacity of a large diameter pile with wings [J]. Chinese Journal of Rock Mechanics and Engineering , 2015 , 34 ( 4 ): 821 - 827 . (in Chinese)

DONG P , QIN R , CHEN Z Z . Bearing capacity and settlement of concrete-cored DCM pile in soft ground [J]. Geotechnical & Geological Engineering , 2004 , 22 ( 1 ): 105 - 119 .

钱于军 , 许智伟 , 邓亚光 , 等 . 劲性复合桩的工程应用与试验分析 [J]. 岩土工程学报 , 2013 , 35 ( Sup2 ): 998 - 1001 .

QIAN Y J , XU Z W , DENG Y G , et al . Engineering application and test analysis of strength composite piles [J]. Chinese Journal of Geotechnical Engineering , 2013 , 35 ( Sup2 ): 998 - 1001 . (in Chinese)

TOKIMATSU K , SUZUKI H , SATO M . Effects of inertial and kinematic interaction on seismic behavior of pile with embedded foundation [J]. Soil Dynamics and Earthquake Engineering , 2005 , 25 : 753 - 762 .

CUBRINOVSKI M , KOKUSHO T , ISHIHARA K . Interpretation from large-scale shake table tests on piles undergoing lateral spreading in liquefied soils [J]. Soil Dynamics and Earthquake Engineering , 2006 , 26 ( 2/3/4 ): 275 - 286 .

BRANDENBERG S J , BOULANGER R W , KUTTER B L , et al . Static pushover analyses of pile groups in liquefied and laterally spreading ground in centrifuge tests [J]. Journal of Geotechnical and Geoenvironmental Engineering , 2007 , 133 ( 9 ): 1055 - 1066 .

CHALOULOS Y K , BOUCKOVALAS G D , KARAMITROS D K . Pile response in submerged lateral spreads: Common pitfalls of numerical and physical modeling techniques [J]. Soil Dynamics and Earthquake Engineering , 2013 , 55 : 275 - 287 .

苏栋 , 李相菘 . 可液化土中单桩地震响应的离心机试验研究 [J]. 岩土工程学报 , 2006 , 28 ( 4 ): 423 - 427 .

SU D , LI X S . Centrifuge investigation on seismic response of single pile in liquefiable soil [J]. Chinese Journal of Geotechnical Engineering , 2006 , 28 ( 4 ): 423 - 427 . (in Chinese)

戚春香 . 饱和砂土液化过程中桩土相互作用 p - y 曲线研究 [D]. 天津 : 天津大学 , 2008 .

QI C X . Research on p - y curves of pile-soil interaction during liquefaction of saturated sands [D]. Tianjin : Tianjin University , 2008 . (in Chinese)

童立元 , 王斌 , 刘义怀 . 地震地基液化大变形对桥梁桩基危害性三维数值分析 [J]. 交通运输工程学报 , 2007 , 7 ( 3 ): 91 - 94 .

TONG L Y , WANG B , LIU Y H . 3-D numerical analysis of large subsoil liquefaction distortion influence resulted from earthquake on bridge pile foundation [J]. Journal of Traffic and Transportation Engineering , 2007 , 7 ( 3 ): 91 - 94 . (in Chinese)

鲍鹏 , 姜忻良 , 盛桂琳 . 劲性搅拌桩复合地基承载性能静动力分析 [J]. 岩土力学 , 2007 , 28 ( 1 ): 63 - 68,82 .

BAO P , JIANG X L , SHENG G L . Static and dynamic analysis of bearing capacity of composite foundation of concrete core mixing piles [J]. Rock and Soil Mechanics , 2007 , 28 ( 1 ): 63 - 68,82 . (in Chinese)

IAI S . Similitude for shaking table tests on soil-structure-fluid model in 1 g gravitational field [J]. Soils and Foundations , 1989 , 29 ( 1 ): 105 - 118 .

FINN W D L , MARTIN G R , LEE K W . An effective stress model for liquefaction [J]. Journal of the Geotechnical Engineering Division , 1975 , 103 ( 6 ): 517 - 533 .

BYRNE P M . A cyclic shear-volume coupling and pore-pressure model for sand [C]// Proceedings of the second international conference on recent advances in geotechnical earthquake engineering and soil dynamics , St. Louis, Missouri , 1991 : 11 - 15 .

许成顺 , 李艳梅 , 潘霞 , 等 . 初始静孔隙水压力对砂土静动力剪切特性影响的试验研究 [J]. 岩土工程学报 , 2019 , 41 ( 6 ): 1050 - 1057 .

XU C S , LI Y M , PAN X , et al . Experimental study on effect of initial static pore water pressure on static and dynamic shear properties of sand [J]. Chinese Journal of Geotechnical Engineering , 2019 , 41 ( 6 ): 1050 - 1057 . (in Chinese)

陈育民 , 徐鼎平 . FLAC/FLAC3D基础与工程实例 [M]. 2版 . 北京 : 中国水利水电出版社 , 2013 .

CHEN Y M , XU D P . Foundation of FLAC/FLAC3D and engineering cases [M]. Beijing : China Water Power Press , 2013 . (in Chinese)

HASHEMINEZHAD A , BAHADORI H . Seismic response of shallow foundations over liquefiable soils improved by deep soil mixing columns [J]. Computers and Geotechnics , 2019 , 110 : 251 - 273 .

刘润 , 李成凤 , 练继建 , 等 . 筒型基础—砂土地基动力响应的离心振动台试验研究 [J]. 岩土工程学报 , 2020 , 42 ( 5 ): 817 - 826 .

LIU R , LI C F , LIAN J J , et al . Centrifugal shaking table tests on dynamic response of bucket foundation-sandy soil [J]. Chinese Journal of Geotechnical Engineering , 2020 , 42 ( 5 ): 817 - 826 . (in Chinese)

王康达 . 江苏典型液化地基桩基地震响应特性及抗震设计方法研究 [D]. 南京 : 东南大学 , 2016 .

WANG K D . Research on the dynamic seismic response and practical design method of piles in typical liquefiable soil of Jiangsu Province [D]. Nanjing : Southeast University , 2016 . (in Chinese)

劲性复合桩技术规程 : JGJ/T 327—2014 [S]. 北京 : 中国建筑工业出版社 , 2014 .

Technical specification for strength composite piles : JGJ/T 327-2014 [S]. Beijing : China Architecture & Building Press , 2014 . (in Chinese)

建筑桩基技术规范 : JGJ 94—2008 [S]. 北京 : 中国建筑工业出版社 , 2008 .

Technical code for building pile foundations : JGJ 94-2008 [S]. Beijing : China Architecture & Building Press , 2008 . (in Chinese)

预应力混凝土管桩技术标准 : JGJ/T 406—2017 [S]. 北京 : 中国建筑工业出版社 , 2017 .

Technical standard for prestressed concrete pipe pile : JGJ/T 406-2017 [S]. Beijing : China Architecture & Building Press , 2017 . (in Chinese)

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