Advances in Materials Science and Engineering· 2019Q2
Research on Shear Capacity and Checking Method of MT·G-Joint for Application in Prefabricated Underground Structures
- 21citations
- Q2SCImago
- 2019year
Short summary
An improved shear key method (ISKM) is proposed to calculate the shear capacity of MT·G-Joints in prefabricated underground structures, validated by four-point pure shear experiments.
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Key points
- Four-point pure shear experiments were conducted to evaluate the shear performance of MT·G-Joints.
- The shear key method was found suitable for MT·G-Joints under zero axial load.
- An improved shear key method (ISKM) was developed for calculating shear capacity under different load conditions.
- ISKM was applied to joints in Changchun Metro Line 2, showing good shear capacity and safety margins.
AI-generated from the title and abstract; the full text is not read.
Abstract
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.
The authors' abstract, as published at the source. Advances in Materials Science and Engineering, 2019 · DOI ↗
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Field: General Engineering
General EngineeringEngineering