Volume 22 Issue 5
Oct.  2022
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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2022  >  22(5): 184-199
ZHU Wei-qing, SHI Hao-hui, ZHANG Guan-hua, LIU Yong-jian, LIU Jia-tong. Flexural performance and capacity of embedded H-shaped steel pile-abutment joint[J]. Journal of Traffic and Transportation Engineering, 2022, 22(5): 184-199. doi: 10.19818/j.cnki.1671-1637.2022.05.011
Citation: ZHU Wei-qing, SHI Hao-hui, ZHANG Guan-hua, LIU Yong-jian, LIU Jia-tong. Flexural performance and capacity of embedded H-shaped steel pile-abutment joint[J]. Journal of Traffic and Transportation Engineering, 2022, 22(5): 184-199. doi: 10.19818/j.cnki.1671-1637.2022.05.011
shu

Flexural performance and capacity of embedded H-shaped steel pile-abutment joint

doi: 10.19818/j.cnki.1671-1637.2022.05.011
  • 1.

    School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    Shanxi Transportation Planning Survey and Design Institute Co. Ltd., Taiyuan 030032, Shanxi, China

  • 3.

    Research and Development Center on Road and Bridge Diagnosis and Maintenance Technology of Ministry of Transport, Shenyang 110166, Liaoning, China

Funds:

National Key Research and Development Program of China 2021YFB2601000

Young Talent Foundation of University Association for Science and Technology in Shaanxi 20180409

Opening Foundation of Research and Development Center on Road and Bridge Diagnosis and Maintenance Technology of Ministry of Transport 2018KFKT-02

Fundamental Research Funds for the Central Universities 300102212912

More Information
    Abstract
  • In order to investigate the flexural performance of embedded H-shaped steel pile-abutment joint for integral abutment bridges, the finite element model of the joint was established, and the effects of abutment thickness, concrete strength, steel pile orientation, buried depth ratio, steel strength, and axial load ratio on the flexural capacity and failure mode of the joint were analyzed. Based on the parameter research, the flexural model and the calculation formulae of bearing capacity were proposed for different failure modes. Analysis results show that the joint where the moment is around the strong axis of steel pile fails as compressive failure of abutment concrete when the buried depth ratio is less than 2.0. Increasing the buried depth ratio of steel pile and the strength of concrete can effectively enhance the flexural capacity of the joint. When the buried depth ratio is more than 2.0 for the joint where the moment is around strong axis of steel pile, or the buried depth ratio is more than 1.0 for the joint where the moment is around weak axis of steel pile, the failure behaves as the yielding of steel pile. Improving the material strength of steel pile will enhance the flexural capacity of the joint. With the increase of axial load ratio, the flexural capacity of the joint failing as the yielding of steel pile around the strong axis decreases significantly. While the effect of axial load ratio on the flexural capacity of the joint behaving as compressive failure or punching failure of abutment concrete can be ignored. The method proposed for calculating the flexural capacity of the joint can predicts the flexural capacity of embedded steel pile-concrete abutment joints with different failure modes accurately, and the average ratio of calculated values to simulated values is 0.981, and the average ratio of calculated values to experimental values is 0.941. So, it can be used to predict the flexural capacity and analyze the failure mode of the joint. It is suggested that the buried depth ratio is larger than 2.0 and the thickness of abutment is greater than 2.4 times the width of pile, so that the adverse compressive failure and punching failure of abutment concrete will be avoided.

     

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