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作者:

Yang, Zhaoyuan (Yang, Zhaoyuan.) | Pan, Peng (Pan, Peng.) | Shi, Yunze (Shi, Yunze.) | Cao, Wanlin (Cao, Wanlin.)

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EI Scopus SCIE

摘要:

An innovative prefabricated lightweight steel composite frame-sandwich wall with an enhanced border structure (LSCF-SW), suitable for low-energy consumption low-rise residences, is proposed. Low cyclic loading experiment were conducted to study its seismic behavior. The main parameters include wallboard border type (composite border, mixed border) and steel reinforcement strength (HRB450, HRB500). One full-scale LSCF specimen and four full-scale LSCF-SW specimens are prepared, and their seismic behavior is investigated in terms of failure mode, hysteretic characteristics, ultimate bearing capacity, stiffness degradation, deformation capacity, energy dissipation, and strain characteristics. The results revealed that the sandwich wall (SW) with an enhanced border and lightweight steel composite frame (LSCF) is the primary and secondary seismic fortification lines of the structure, respectively. The LSCF-SW structure exhibited a damage evolution process with four stages. The failure mode involving concrete crushing at the bolted connection area is observed in the specimens with composite bordered sandwich walls (LSCF-SWC), and dense diagonal cracks are discovered in the specimens with mixed bordered sandwich walls (LSCF-SWM). Compared to LSCF-SWC specimens, the ultimate load of LSCF-SWM specimens increases by 23.0 %-50.3 %, and the initial stiffness improves by 16.3 %-42.3 %. The deformation capacity of LSCF-SWC specimens is superior to that of LSCF-SWM specimens. As the steel reinforcement strength increases, the ultimate bearing capacity and initial stiffness of the LSCF-SW also rise. A shear model for the bolt group and a local bending model for the wallboard border are proposed, establishing an ultimate bearing capacity calculation method for LSCF-SW. The calculation results closely align with the experimental results.

关键词:

Ultimate bearing capacity Prefabricated lightweight steel composite Seismic behavior structure Lightweight steel composite frame Sandwich wall

作者机构:

  • [ 1 ] [Yang, Zhaoyuan]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 2 ] [Pan, Peng]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 3 ] [Shi, Yunze]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 4 ] [Cao, Wanlin]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100124, Peoples R China

通讯作者信息:

  • [Cao, Wanlin]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100124, Peoples R China;;

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来源 :

JOURNAL OF BUILDING ENGINEERING

年份: 2024

卷: 97

6 . 4 0 0

JCR@2022

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SCOPUS被引频次: 1

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