Seismic Resistance Properties of Improved Dry-Type Beam-Column Joint: An Experimental Research

• Main Authors: Wei Ma, Fan Yang, Pan Hu, Haiyi Liang, Kai Xu
• Format: Article
• Language: English
• Published: Hindawi Limited 2021-01-01
• Series: Shock and Vibration
• Online Access: http://dx.doi.org/10.1155/2021/6681882

Dry-type joints are an advanced type of sustainable beam-column connection mode used in the prefabricated concrete frame structural system. This paper proposed an improvement scheme for high-strength bolt dry-type joints and designed a new type of common bolt dry-type joints. A pseudo test involving low-cycle repeated loading is conducted to assess the seismic resistance properties of new joints including damage mode, hysteretic curve, skeleton curve, and ductility factor. Numerical simulation is applied to validate the rationality of experimental results. It is found that when the bending capacity of the end block of the beam is consistent with that of the bolt, the deformation of the bolt will no longer increase greatly after a period of large deformation; at this period, the bolt does not fully enter the plastic stage, but at this time, the end block of the beam begins to appear large cracks and enter the plastic deformation and has good energy dissipation performance.