Study of bearing capacity evaluation for bridge piles by measured dynamic stiffness

LIU Jian-lei; MA Meng; LI Lin-jie; KE Zai-tian; GAO Yan

doi:10.16285/j.rsm.2015.S2.080

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Study of bearing capacity evaluation for bridge piles by measured dynamic stiffness

更新时间：2026-06-25

- Study of bearing capacity evaluation for bridge piles by measured dynamic stiffness
- Vol. 36, Issue S2, Pages: 571-576(2015)
- 作者机构：
  
  1. 中国铁道科学研究院铁道建筑研究所,北京,100081
  2. 北京交通大学土木建筑工程学院,北京,100044
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.S2.080
  CLC： TU473.1
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
移动端阅览
LIU Jian-lei, MA Meng, LI Lin-jie, et al. Study of bearing capacity evaluation for bridge piles by measured dynamic stiffness[J]. 2015, 36(S2): 571-576.
DOI：

LIU Jian-lei, MA Meng, LI Lin-jie, et al. Study of bearing capacity evaluation for bridge piles by measured dynamic stiffness[J]. 2015, 36(S2): 571-576. DOI： 10.16285/j.rsm.2015.S2.080.

摘要

提出了适用于批量评估分析的、基于实测动刚度的桥桩承载能力评估方法。结合某公路特大桥大批量桥墩基础评估加固工程，利用瞬态机械阻抗法对680根桥桩进行动测。通过基桩低应变完整性辅助测试及动刚度统计分析，推算了桥桩承载能力并给出加固建议。研究表明，对于桩身完整的桥桩，动刚度与承载能力在统计上具有明显的正相关关系；对于承受相近设计荷载的桥桩，测桩样本较大时动刚度值对桥桩完整性评估具有较好可信度。通过抽样取芯分析，验证了提出的桥桩承载能力评估方法具备较好的可靠性。

Abstract

Bearing capacity evaluation is important for existing bridge piles with potential defections. As the pile loading tests and high strain tests are not allowed to perform for some bridges in service

a bearing capacity evaluation method for bridge piles is proposed. This method is based on the measured dynamic stiffness of piles and can be used for evaluating large quantities of piles

according to the following three steps: pre-analysis

general investigation measurement and verification. Combined with a practical engineering that evaluation of a great many piles for a long highway bridge

dynamic measurement for 680 bridge piles are performed by impulse transient response method. Detail statistics for dynamic stiffness of the bridge piles is performed. Combined with the assistant low strain dynamic measurements

the pile bearing capacities are calculated; and reinforcement suggestions for piles are proposed. Finally

in order to validate the estimation method

80 pile samples are selected to perform the core drilling analysis. Results show that: for integrated piles

the obvious positive correlation can be found between dynamic stiffness and bearing capacity of piles; moreover

the values of dynamic stiffness have good reliability for evaluating the bearing capacity of large number of piles when they bear the similar design loads. By analyzing drilling core samples

it is proved that the evaluation method proposed has good reliability.

关键词

Keywords

references

Views

124

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study of working mechanism and bearing capacity behavior of bucket foundation for offshore wind turbine

Model testing research on limit state of primary support in composite lining tunnels

Comparative analysis of dynamic responses of cast-in-place concrete large-diameter pipe pile and solid pile in homogeneous soil

Research on bearing capacity of tunnel surrounding rock based on discontinuous displacement field

Simplified analytical method of vertical dynamic response of cast-in-situ concrete thin-wall pipe piles in axisymmetric homogeneous viscoelastic soil

Related Author

LIU Run

SUN Li-qiang

HUO Zhi-liang

YAN Shu-wang

WANG Hang

QIU Wen-ge

FENG Ji-meng

LIU Han-long

Related Institution

State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University

School of Civil Engineering, Tianjin University

School of Civil Engineering, Southwest Jiaotong University

Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University

Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University

AI问答

⁰