Experimental Research on Mechanical Properties of Prefabricated Cylindrical Piers with Different Splicing Structures Under Eccentric Compression

LIN Shangshun; LIN Yongjie; XIA Zhanghua; YANG Qie; YE Shiji

doi:10.13204/j.gyjzG21012609

Volume 52 Issue 4

Jul. 2022

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LIN Shangshun, LIN Yongjie, XIA Zhanghua, YANG Qie, YE Shiji. Experimental Research on Mechanical Properties of Prefabricated Cylindrical Piers with Different Splicing Structures Under Eccentric Compression[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(4): 91-97. doi: 10.13204/j.gyjzG21012609

Citation:

LIN Shangshun, LIN Yongjie, XIA Zhanghua, YANG Qie, YE Shiji. Experimental Research on Mechanical Properties of Prefabricated Cylindrical Piers with Different Splicing Structures Under Eccentric Compression[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(4): 91-97. doi: 10.13204/j.gyjzG21012609

Citation:

LIN Shangshun, LIN Yongjie, XIA Zhanghua, YANG Qie, YE Shiji. Experimental Research on Mechanical Properties of Prefabricated Cylindrical Piers with Different Splicing Structures Under Eccentric Compression[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(4): 91-97. doi: 10.13204/j.gyjzG21012609

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Experimental Research on Mechanical Properties of Prefabricated Cylindrical Piers with Different Splicing Structures Under Eccentric Compression

doi: 10.13204/j.gyjzG21012609

1. Fujian Provincial Key Laboratory of Advanced Technology and Information in Civil Engineering (Fujian University of Technology), Fuzhou 350118, China;
2. School of Civil Engineering, Fuzhou University, Fuzhou 350108, China

Received Date: 2021-01-26
Available Online: 2022-07-25

Abstract

Abstract

The existing experimental studies showed that the seismic performance of prefabricated cylindrical pier with hybrid joint was better than that of cast-in-place pier, but the experimental research on the mechanical properties of this kind of assembled pier under eccentric compression was rare. The mechanical properties tests of four kinds of cylindrical piers under large or small eccentric compression were carried out, including the assembled pier with hybrid joints, the assembled pier with grouting sleeve connection, the assembled pier with CFST shear key connection and the integral cast-in-place pier. The damage mechanism and failure mode of different types of piers were compared and analyzed, and the bearing capacity of the specimens under compression was calculated by JTG 3362—2018. The results showed that: the failure mode and damage process of the pier connected by hybrid joints were similar to that of the integral bridge pier, which showed that the concrete on the compression side was crushed in the state of small eccentric compression, and the steel bar in the tensile side was yielding failure in the state of large eccentric compression. Compared with the integral cast-in-place specimens, the bearing capacity of the hybrid joint connection specimens increased by 6% under large eccentric compression and increased by 2% under small eccentric compression. The bearing capacity of the specimens connected by the grouting sleeve was reduced by 6% under large eccentric compression and increased by 8% under small eccentric compression. The bearing capacity of the specimens connected by the CFST shear key decreased by 20% under large eccentric compression and decreased by 27% under small eccentric compression. Different from other types of assembled pier specimens, the measured bearing capacity of composite pier specimens connected with hybrid joints was greater than the calculation results of JTG 3362—2018.
- assembling pier,
- grouting sleeve,
- CFST shear key,
- eccentric compression test,
- ultimate bearing capacity

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References(16)

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