|Table of Contents|

Experiment on Effect of Unbalanced Earth Pressure on Mechanical Behavior of Soil-abutment-steel H-pile in Integral Abutment Jointless Bridges(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2021年04期
Page:
80-88
Research Field:
Publishing date:

Info

Title:
Experiment on Effect of Unbalanced Earth Pressure on Mechanical Behavior of Soil-abutment-steel H-pile in Integral Abutment Jointless Bridges
Author(s):
HUANG Fu-yun1;  SHAN Yu-lin1;  YAN Ai-guo2;  GUI Kui1;  CHEN Bao-chun1
(1. College of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China; 2. China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, Hubei, China)
Keywords:
bridge engineering;  integral abutment jointless bridge;  pseudo-static test;  unbalanced earth pressure;  soil-abutment-steel H-pile interaction
PACS:
TU473
DOI:
10.19815/j.jace.2021.01004
Abstract:
In order to study on effect of unbalanced earth pressure on mechanical behavior of soil-abutment-steel H-pile in integral abutment jointless bridges(IAJBs), based on soil-abutment-steel H-pile interaction test under unbalanced earth pressure, a reciprocating low-cycle pseudo-static test on soil-abutment-steel H-pile interaction was carried out under larger unbalanced earth pressure(increase the uniform backfill load of 3.81 kPa behind abutment). The study was performed to find the effect of larger unbalanced earth pressure on the horizontal deformations, soil resistance, strain and bending moment of pile. The test results indicate that under the experimental conditions, larger unbalanced earth pressure has no influence on distribution law of horizontal deformations, soil resistance, strain and bending moment. The larger unbalanced earth pressure improves the buried depth of accumulative deformation, soil resistance and bending moment of pile under positive loading. The larger unbalanced earth pressure also improves the buried depth of accumulative deformation and bending moment of pile under negative loading. In addition, the larger unbalanced earth pressure makes the accumulated deformation decrease under positive loading. It makes the accumulated deformation increase under negative loading. The soil resistance, strain and bending moment of the LAHP model under positive loading are significantly larger than those of negative loading. The maximum soil resistance and bending moment of pile in positive loading are 2.2 times and 2.1 times as much as negative loading, respectively.

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Last Update: 2021-07-10