[1]李雨润,邹泽,潘鑫鑫,等.对称双斜桩侧向响应振动台试验与数值模拟[J].地震工程与工程振动,2018,(05):221-230.[doi:10.13197/j.eeev.2018.05.221.liyr.026]
 LI Yurun,ZOU Ze,PAN Xinxin,et al.Lateral response of symmetrically assembled double batter piles of shaking table test and numerical simulation[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2018,(05):221-230.[doi:10.13197/j.eeev.2018.05.221.liyr.026]
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对称双斜桩侧向响应振动台试验与数值模拟
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《地震工程与工程振动》[ISSN:/CN:]

卷:
期数:
2018年05
页码:
221-230
栏目:
论文
出版日期:
2018-10-31

文章信息/Info

Title:
Lateral response of symmetrically assembled double batter piles of shaking table test and numerical simulation
作者:
李雨润12 邹泽1 潘鑫鑫1 张雨雷1
1. 河北工业大学 土木与交通学院, 天津 300401;
2. 河北省土木工程技术研究中心, 天津 300401
Author(s):
LI Yurun12 ZOU Ze1 PAN Xinxin1 ZHANG Yulei1
1. College of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China;
2. Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, China
关键词:
斜桩抗震FLAC-3D有限差分软件承台放大效应液化土数值模拟
Keywords:
inclined pile aseismicFLAC-3D finite difference softwarecap magnification effectliquefied soilnumerical simulation
分类号:
P315.9
DOI:
10.13197/j.eeev.2018.05.221.liyr.026
摘要:
液化土中的桩基抗震性能一直是岩土工程抗震领域研究的热点问题。本文基于电磁式振动台试验,综合对比分析对称双桩在不同PGA正弦波输入下的承台加速度和位移相对台面输入时程峰值的放大效应;采用FLAC-3D有限差分软件建立干砂和饱和砂土中对称双直桩和对称双斜桩的三维动力计算模型进行数值模拟,并将数值模拟结果与试验结果进行对比分析,研究结果表明:在正弦波与El-centro地震波输入的饱和砂土中,对称双桩承台的加速度、位移峰值相较于在干砂中明显增大,双斜桩桩头承台的动力放大效应低于双直桩;在液化土中使用斜桩可以较好的减小地震破坏效应;运用FLAC-3D有限差分软件可以较好的模拟饱和砂土中斜桩侧向动力响应问题。
Abstract:
The seismic performance of pile foundation in liquefied soil has always been a hot issue in the aseismic field of geotechnical engineering. Based on the electromagnetic shaking table test, this paper comprehensively compares and analyzes the amplification effect of time history peak of the acceleration and displacement of the cap of the symmetrical double pile relative to the mesa under the different PGA sine wave input; Using FLAC-3D finite difference software to establish the three-dimensional dynamic calculation model of symmetric double straight piles and symmetric double inclined piles in dry sand and saturated sand, and carrying out numerical simulation, and the numerical results are compared with experimental results, the results show that:the peak value of acceleration and displacement of symmetrical double pile caps in saturated sand under sine wave and El-centro seismic wave input is obviously larger than that in dry sand, and the dynamic amplification effect of double inclined pile head caps is lower than that of double straight piles; the use of inclined pile in liquefied soil can reduce the earthquake damage effect well; the FLAC-3D finite difference software can be used to simulate the lateral dynamic response of the inclined pile in saturated sand well.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-12-02;改回日期:2018-03-05。
基金项目:国家自然科学基金项目(51778207,51008110);河北省自然科学基金项目(E2018202107)
作者简介:李雨润(1978-),男,教授,博士,主要从事土动力学与岩土工程抗震研究.E-mail:iemlyr7888@hebut.edu.cn
更新日期/Last Update: 1900-01-01