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[1]单玉麟,黄福云,周桂吉,等.考虑台后不平衡土压力下整体桥H型钢桩基-土相互作用内力计算方法[J].建筑科学与工程学报,2022,39(01):125-133.[doi:10.19815/j.jace.2021.04029]
　SHAN Yu-lin,HUANG Fu-yun,ZHOU Gui-ji,et al.Internal Force Calculation Method of Soil-steel H-pile Considering Unbalanced Earth Pressure of Backfill Behind Abutment in Integral Abutment Jointless Bridges[J].Journal of Architecture and Civil Engineering,2022,39(01):125-133.[doi:10.19815/j.jace.2021.04029]
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考虑台后不平衡土压力下整体桥H型钢桩基-土相互作用内力计算方法(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
39卷
期数:
2022年01期
页码:
125-133
栏目:
基础工程
出版日期:
2022-02-15

文章信息/Info

Title:
Internal Force Calculation Method of Soil-steel H-pile Considering Unbalanced Earth Pressure of Backfill Behind Abutment in Integral Abutment Jointless Bridges
文章编号:
1673-2049(2022)01-0125-09
作者:
单玉麟1,2,黄福云1,周桂吉3,易志宏3,陈宝春1
(1. 福州大学 土木工程学院,福建 福州 350108; 2. 东南大学 土木工程学院,江苏 南京 211189; 3. 四川省公路规划勘察设计研究院有限公司,四川 成都 610041)
Author(s):
SHAN Yu-lin1,2, HUANG Fu-yun1, ZHOU Gui-ji3, YI Zhi-hong3, CHEN Bao-chun1
(1. College of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China; 2. School of Civil Engineering, Southeast University, Nanjing 211189, Jiangsu, China; 3. Sichuan Highway Planning, Survey, Design and Research Institute Ltd., Chengdu 610041, Sichuan, China)
关键词:
桥梁工程;  整体桥;  不平衡土压力;  桥台-H型钢桩-土相互作用;  内力计算方法
Keywords:
bridge engineering;  integral abutment jointless bridge;  unbalanced earth pressure;  soil-abutment-steel H-pile interaction;  internal force calculation method
分类号:
TU473
DOI:
10.19815/j.jace.2021.04029
文献标志码:
A
摘要:
在台后填土作用下整体式桥台-H型钢桩-土相互作用和大不平衡土压力下(台后土表面均布荷载增大了3.81 kPa)整体式桥台-H型钢桩-土相互作用拟静力试验研究的基础上,提出了考虑台后不平衡土压力下整体桥桩基-土相互作用的内力计算方法,计算了整体桥台底弯矩和剪力以及桩身弯矩和剪力,并与现有的台后土压力理论和桥梁规范的计算值进行比较。结果表明:正向加载时,采用现有的台后土压力理论和桥梁规范计算得到的台底弯矩和剪力以及桩身弯矩和剪力均与试验结果存在较大偏差; 采用黄-林法可较准确地计算AHP模型的台底弯矩和剪力以及桩身弯矩和剪力; 对于LAHP模型,试验值均与各理论计算值相差较大; 正向加载时,随着位移荷载的增加,AHP和LAHP模型的台底和桩身弯矩均逐渐增大; 台后堆载(大不平衡土压力)对整体桥台底剪力和弯矩以及桩身的剪力和弯矩产生较大的影响,LAHP模型的台底和桩身弯矩整体上均大于AHP模型的,而LAHP模型的台底剪力小于AHP模型的,桩身剪力大于AHP模型的。
Abstract:
Based on test of soil-abutment-steel H-pile interaction under unbalanced earth pressure and soil-abutment-steel H-pile interaction under larger unbalanced earth pressure(the uniform backfill load increase of 3.81 kPa behind abutment), the internal force calculation method of soil-steel H-pile interaction considering the unbalanced earth pressure of backfill behind abutment was given in integral abutment jointless bridges(IAJBs). The bending moment and shear force of abutment bottom and pile body were calculated. They were compared with the calculated values by the existing theory of earth pressure of backfill behind abutment and the bridge code. The results show that under the positive loading, the calculated value of bending moment and shear force of abutment bottom and pile body by the existing theory of earth pressure of backfill behind abutment and the bridge code are significantly different from test results. The bending moment and shear force of abutment bottom and pile body for AHP model can be calculated accurately by using the “Huang-Lin” method. The test results of LAHP model are significantly different from the theoretical values. Under the positive loading, the bending moments of abutment bottom and pile body for AHP and LAHP models gradually increase with the increase of displacement loading. In addition, the surcharge loading of backfill behind abutment(larger unbalanced earth pressure)has an important influence on bending moment and shear force of abutment bottom and pile body. The bending moments of abutment bottom and pile body for LAHP model are larger than those of AHP model. However, the shear force of abutment bottom for LAHP model is less than that of AHP model. The shear force of pile body for LAHP model is larger than that of AHP model.

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备注/Memo

备注/Memo:
收稿日期:2021-04-11
基金项目:国家自然科学基金项目(51578161); 四川省交通科技项目(2020-A-05)
作者简介:单玉麟(1996-),男,河南浚县人,工学博士研究生,E-mail:shanyulin_123@163.com。
通信作者:黄福云(1979-),男,江西丰城人,教授,博士研究生导师,工学博士,E-mail:Huangfuyun@fzu.edu.cn。
更新日期/Last Update: 2021-02-10