Mechanical Properties Analysis of Core Reinforced Concrete-Filled Pile-Cap Joint Under Tensile-Bending Load

LIU Huaqing; AN Zengjun; LIU Jialong; LI Yuanyuan; CAI Jianguo

doi:10.13204/j.gyjzG22011208

Volume 52 Issue 6

Sep. 2022

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LIU Huaqing, AN Zengjun, LIU Jialong, LI Yuanyuan, CAI Jianguo. Mechanical Properties Analysis of Core Reinforced Concrete-Filled Pile-Cap Joint Under Tensile-Bending Load[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(6): 12-18. doi: 10.13204/j.gyjzG22011208

Citation:

LIU Huaqing, AN Zengjun, LIU Jialong, LI Yuanyuan, CAI Jianguo. Mechanical Properties Analysis of Core Reinforced Concrete-Filled Pile-Cap Joint Under Tensile-Bending Load[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(6): 12-18. doi: 10.13204/j.gyjzG22011208

Citation:

LIU Huaqing, AN Zengjun, LIU Jialong, LI Yuanyuan, CAI Jianguo. Mechanical Properties Analysis of Core Reinforced Concrete-Filled Pile-Cap Joint Under Tensile-Bending Load[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(6): 12-18. doi: 10.13204/j.gyjzG22011208

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Mechanical Properties Analysis of Core Reinforced Concrete-Filled Pile-Cap Joint Under Tensile-Bending Load

doi: 10.13204/j.gyjzG22011208

1. China Electric Power Research Institute, Beijing 100192, China;
2. Economic Research Institute, State Grid Jiangsu Electric Power Company, Nanjing 210008, China;
3. Jiangsu Electric Power Design Consulting Co., Ltd., Nanjing 210008, China;
4. National Prestress Engineering Research Center, Southeast University, Nanjing 211189, China

Received Date: 2022-01-12
Available Online: 2022-09-05

Abstract

Abstract

The PHC pipe pile-cap joint is in a complex stress environment, and its mechanical mechanism needs to be further studied. ABAQUS finite element software was used to establish the calculation model of core reinforced concrete-filled pile-cap joint, and the mechanical mechanism of the joint under the combined loading condition of tension and the bending moment was studied. The effects of the embedded depth of pile, the height of cap on the stress distribution and the tensile capacity of the pile were investigated. The calculation results showed that the load-displacement curves of core reinforced concrete-filled pile-cap joint and the damage characteristics of pipe pile and cap calculated by finite element analysis were close to the experimental results. With the increase of pile embedment depth and cap height, the initial stiffness and bearing capacity of the joint increased significantly. When the embedded depth of pipe pile was small, the stiffness of joint was mainly caused by the yield of prestressed reinforcement, anchor reinforcement and the damage of concrete components. When the embedded depth of pipe pile was large or the height of cap was small, the overall stiffness of joint was decreased due to the damage of concrete components.
- PHC pipe pile,
- pile-cap joint,
- reinforced core filling,
- finite element analysis,
- parameter analysis

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References(27)

References

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