Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures

The MT·G-Joint (grouted mortise-tenon joint), invented as the connection between the large prefabricated elements, is the most important component in the prefabricated underground structures. Its shear performance is critical to the overall mechanical performance of the prefabricated structure. This...

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Main Authors: Xiuren Yang, Zhongheng Shi, Fang Lin
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Advances in Materials Science and Engineering
Online Access:http://dx.doi.org/10.1155/2019/4065301
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author Xiuren Yang
Zhongheng Shi
Fang Lin
author_facet Xiuren Yang
Zhongheng Shi
Fang Lin
author_sort Xiuren Yang
collection DOAJ
description The MT·G-Joint (grouted mortise-tenon joint), invented as the connection between the large prefabricated elements, is the most important component in the prefabricated underground structures. Its shear performance is critical to the overall mechanical performance of the prefabricated structure. This paper carries out four-point pure shear experiment to investigate the shear performance of the MT·G-Joint. The shear key method is then proved to be suitable for MT·G-Joint when the axial load is 0 kN based on the experimental results. In addition, combining the shear key method and experimental results, the calculation method of the shear capacity, improved shear key method (ISKM), is proposed on account of the mechanical model of the failure plane. ISKM is appropriate for different load conditions. Finally, every kind of joints used in the prefabricated metro station structures on Changchun Metro Line 2 is calculated by using ISKM. The results indicate that the shear capacity of the MT·G-Joint is good, and the used joints still have large safety margin even under the worst working condition. The findings of this study are of value to help researchers and engineers more effectively design prefabricated underground structures.
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spelling doaj-art-aaad4e92f7fc485cb9fa0107c018ba612025-02-03T01:06:40ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/40653014065301Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground StructuresXiuren Yang0Zhongheng Shi1Fang Lin2School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaBeijing Urban Construction Design and Development Group Co. Ltd., Beijing 100037, ChinaThe MT·G-Joint (grouted mortise-tenon joint), invented as the connection between the large prefabricated elements, is the most important component in the prefabricated underground structures. Its shear performance is critical to the overall mechanical performance of the prefabricated structure. This paper carries out four-point pure shear experiment to investigate the shear performance of the MT·G-Joint. The shear key method is then proved to be suitable for MT·G-Joint when the axial load is 0 kN based on the experimental results. In addition, combining the shear key method and experimental results, the calculation method of the shear capacity, improved shear key method (ISKM), is proposed on account of the mechanical model of the failure plane. ISKM is appropriate for different load conditions. Finally, every kind of joints used in the prefabricated metro station structures on Changchun Metro Line 2 is calculated by using ISKM. The results indicate that the shear capacity of the MT·G-Joint is good, and the used joints still have large safety margin even under the worst working condition. The findings of this study are of value to help researchers and engineers more effectively design prefabricated underground structures.http://dx.doi.org/10.1155/2019/4065301
spellingShingle Xiuren Yang
Zhongheng Shi
Fang Lin
Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures
Advances in Materials Science and Engineering
title Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures
title_full Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures
title_fullStr Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures
title_full_unstemmed Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures
title_short Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures
title_sort research on shear capacity and checking method of mt·g joint for application in prefabricated underground structures
url http://dx.doi.org/10.1155/2019/4065301
work_keys_str_mv AT xiurenyang researchonshearcapacityandcheckingmethodofmtgjointforapplicationinprefabricatedundergroundstructures
AT zhonghengshi researchonshearcapacityandcheckingmethodofmtgjointforapplicationinprefabricatedundergroundstructures
AT fanglin researchonshearcapacityandcheckingmethodofmtgjointforapplicationinprefabricatedundergroundstructures