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基桩动力稳定性模型试验研究 - Model Test for Dynamic Stability of Piles

为探讨动力荷载作用下基桩的动力稳定性,在大型地槽中以均匀细砂模拟桩周土,分别构造不同桩径、桩身埋置率及边界条件的基桩.通过协调加载系统在桩顶施加不同幅值与频率的简谐振动荷载,利用埋设的传感器采集桩身及桩周土的应力应变等动力响应,经对比分析获得桩径、埋置率、荷载频率与大小等参数对桩顶位移的动力影响规律,并验证了基桩的参数共振现象.研究发现:频率观测值小于理论计算值,可用取值为0.5~0.8的系数k予以调整,且动荷载幅值越大、桩周土越深,k的取值就越偏小.... Full description

Journal Title: 湖南大学学报:自然科学版 - Journal of Hunan University(Naturnal Science) 2012, Vol.39(12), pp.19-24
Main Author: 邹新军
Other Authors: 陈少玉 , 尹帮顺 , 邓建安 , ZOU Xin-jun,CHEN Shao-yu,YIN Bang-shun,DENG Jian-an
Format: Electronic Article Electronic Article
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Quelle: 维普数据 (Chongqing VIP Information Co.)
ID: ISSN: 1674-2974
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recordid: cqvip44305647
title: 基桩动力稳定性模型试验研究 - Model Test for Dynamic Stability of Piles
format: Article
creator:
  • 邹新军
  • 陈少玉
  • 尹帮顺
  • 邓建安
  • ZOU Xin-jun,CHEN Shao-yu,YIN Bang-shun,DENG Jian-an
subjects:
  • 桩基础
  • 高承台
  • 动力稳定性
  • 模型试验
  • 参数共振
  • Pile Foundation
  • High-Rise Pile Cap
  • Dynamic Stability
  • Model Test
  • Parametric Resonance
ispartof: 湖南大学学报:自然科学版 - Journal of Hunan University(Naturnal Science), 2012, Vol.39(12), pp.19-24
description: 为探讨动力荷载作用下基桩的动力稳定性,在大型地槽中以均匀细砂模拟桩周土,分别构造不同桩径、桩身埋置率及边界条件的基桩.通过协调加载系统在桩顶施加不同幅值与频率的简谐振动荷载,利用埋设的传感器采集桩身及桩周土的应力应变等动力响应,经对比分析获得桩径、埋置率、荷载频率与大小等参数对桩顶位移的动力影响规律,并验证了基桩的参数共振现象.研究发现:频率观测值小于理论计算值,可用取值为0.5~0.8的系数k予以调整,且动荷载幅值越大、桩周土越深,k的取值就越偏小.
language:
source: 维普数据 (Chongqing VIP Information Co.)
identifier: ISSN: 1674-2974
fulltext: no_fulltext
issn:
  • 1674-2974
  • 16742974
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title基桩动力稳定性模型试验研究 - Model Test for Dynamic Stability of Piles
creator邹新军 ; 陈少玉 ; 尹帮顺 ; 邓建安 ; ZOU Xin-jun,CHEN Shao-yu,YIN Bang-shun,DENG Jian-an
ispartof湖南大学学报:自然科学版 - Journal of Hunan University(Naturnal Science), 2012, Vol.39(12), pp.19-24
identifierISSN: 1674-2974
subject桩基础 ; 高承台 ; 动力稳定性 ; 模型试验 ; 参数共振 ; Pile Foundation; High-Rise Pile Cap; Dynamic Stability; Model Test; Parametric Resonance
description
0为探讨动力荷载作用下基桩的动力稳定性,在大型地槽中以均匀细砂模拟桩周土,分别构造不同桩径、桩身埋置率及边界条件的基桩.通过协调加载系统在桩顶施加不同幅值与频率的简谐振动荷载,利用埋设的传感器采集桩身及桩周土的应力应变等动力响应,经对比分析获得桩径、埋置率、荷载频率与大小等参数对桩顶位移的动力影响规律,并验证了基桩的参数共振现象.研究发现:频率观测值小于理论计算值,可用取值为0.5~0.8的系数k予以调整,且动荷载幅值越大、桩周土越深,k的取值就越偏小.
1In order to investigate the stability of piles under dynamic loads,an indoor model test was designed,in which homogeneous fine sand was used to simulate the subsoil around the pile shaft with various diameters,embedded ratios and boundary conditions at the top and the toe.Then,simple harmonic loads with...
relation作者单位: 湖南大学土木工程学院,湖南长沙410082
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5湖南大学土木工程学院,湖南长沙410082
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0基桩动力稳定性模型试验研究
1Model Test for Dynamic Stability of Piles
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0为探讨动力荷载作用下基桩的动力稳定性,在大型地槽中以均匀细砂模拟桩周土,分别构造不同桩径、桩身埋置率及边界条件的基桩.通过协调加载系统在桩顶施加不同幅值与频率的简谐振动荷载,利用埋设的传感器采集桩身及桩周土的应力应变等动力响应,经对比分析获得桩径、埋置率、荷载频率与大小等参数对桩顶位移的动力影响规律,并验证了基桩的参数共振现象.研究发现:频率观测值小于理论计算值,可用取值为0.5~0.8的系数k予以调整,且动荷载幅值越大、桩周土越深,k的取值就越偏小.
1In order to investigate the stability of piles under dynamic loads,an indoor model test was designed,in which homogeneous fine sand was used to simulate the subsoil around the pile shaft with various diameters,embedded ratios and boundary conditions at the top and the toe.Then,simple harmonic loads with...
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2动力稳定性
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title基桩动力稳定性模型试验研究 - Model Test for Dynamic Stability of Piles
author邹新军 ; 陈少玉 ; 尹帮顺 ; 邓建安 ; ZOU Xin-jun,CHEN Shao-yu,YIN Bang-shun,DENG Jian-an
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0为探讨动力荷载作用下基桩的动力稳定性,在大型地槽中以均匀细砂模拟桩周土,分别构造不同桩径、桩身埋置率及边界条件的基桩.通过协调加载系统在桩顶施加不同幅值与频率的简谐振动荷载,利用埋设的传感器采集桩身及桩周土的应力应变等动力响应,经对比分析获得桩径、埋置率、荷载频率与大小等参数对桩顶位移的动力影响规律,并验证了基桩的参数共振现象.研究发现:频率观测值小于理论计算值,可用取值为0.5~0.8的系数k予以调整,且动荷载幅值越大、桩周土越深,k的取值就越偏小.
1In order to investigate the stability of piles under dynamic loads,an indoor model test was designed,in which homogeneous fine sand was used to simulate the subsoil around the pile shaft with various diameters,embedded ratios and boundary conditions at the top and the toe.Then,simple harmonic loads with...
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