Earthquakes and Structures

  • 제27권6호
  • /
  • Pages.485-497
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  • 2024
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental study on seismic performance of precast welded wire mesh ceramsite concrete shear wall with dry connections

  • Huadong Zhang (College of Water Conservancy & Architectural Engineering, Shihezi University) ;
  • Kang Yuan (College of Water Conservancy & Architectural Engineering, Shihezi University) ;
  • Gang Zhang (College of Water Conservancy & Architectural Engineering, Shihezi University) ;
  • Yueyue Gao (Xinjiang Architectural Design Institute Co., Ltd)
  • 투고 : 2024.07.08
  • 심사 : 2024.09.24
  • 발행 : 2024.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Considering the development of precast structures in low-rise buildings, a new precast shear wall made of ceramsite concrete is proposed in this paper, with welded wire mesh (WWM) utilized as the load-bearing reinforcement. Three different dry connection methods were designed and fabricated: welding, bolting and bolting plus mortar-bonding. The seismic performance of three precast shear wall specimens and one cast-in-place shear wall specimen was assessed by quasi-static tests. The failure mode, bearing capacity, hysteresis characteristics, ductility, stiffness degradation, slip, and energy dissipation of the specimens were obtained by analyzing the test results of the hysteresis curve, crack distribution and WWM strain. The test results show that the failure modes of the new precast shear walls under the three connection methods differ. The damage is mainly concentrated at the joints, and the wall damage is less severe. Compared to cast-in-place shear wall, precast shear walls with bolted and welded connections show lower load-bearing capacity and stiffness but offer enhanced ductility and energy dissipation. These walls primarily dissipate energy through slip, with over 80% of the dissipation during elastic-plastic and damage stages. Bolted plus mortar-bonded connection exhibit increased stiffness in the walls but lead to earlier damage and reduced energy dissipation. Lastly, based on the research results and analysis, the analysis method and calculation model for predicting the transverse bearing capacity of new shear walls under dry connections are proposed.

키워드

과제정보

This study is supported by the National Natural Science Foundation of China (Grant No. 51968062), the Corps Key Research and Development Project (Grant No. 2024YD005), and the Achievement Transformation and Technology Extension Project of Shihezi University (CGZH202201).

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