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(1 黑龍江八一農(nóng)墾大學土木水利學院, 大慶 163319; 2 洲宇設計集團股份有限公司, 成都 610213)
摘要: 將 X 型屈曲約束鋼板墻在上、下邊與梁連接并在側(cè)邊與柱部分連接,即形成局部連接 X 型屈曲約束鋼板墻. 側(cè)邊局部連接可避免兩邊連接屈曲約束鋼板墻梁端剪力過大,同時 X 型墻的中部削弱也避免了屈曲約束鋼板墻易于在角部首先發(fā)生破壞的問題. 采用有限元模擬的方法對局部連接 X 型屈曲約束鋼板墻的受力性能進行了分析,研究發(fā)現(xiàn)增大側(cè)邊連接高度能夠有效減小梁端剪力,而且結構的剛度和承載力也隨之增大. 通過參數(shù)分析確定了 X 型屈曲約束鋼板墻側(cè)邊連接高度的建議取值,提出了局部連接 X 型屈曲約束鋼板墻初始剛度和屈服承載力的計算公式,分析結果表明提出的理論公式具有較高的準確性. 此外,還提出了局部連接 X 型屈曲約束鋼板墻的等效支撐模型用于進行結構簡化分析.
關鍵詞: X 型屈曲約束鋼板墻; 局部連接; 初始剛度; 屈服承載力; 等效支撐模型
中圖分類號:TU392. 4 文獻標志碼:A 文章編號:1002?848X(2022)16?0088?06
DOI:10. 19701 / j. jzjg. LS210306
Research on mechanical behavior of partially connected X?shape buckling restrainedsteel plate shear wall
LIU Wenyang1, TANG Yuanjun2, SUN Yuzong1, BAI Na1
(1 College of Civil Engineering and Water Conservancy, Heilongjiang Bayi Agricultural University, Daqing 163319, China;2 Zhoyu Design Group Co. , Ltd. , Chengdu 610213, China)
Abstract: Connecting the X?shape buckling restrained steel plate shear wall (XBRW) to boundary beams on the top andbottom sides, and to boundary columns at local part on the left and right sides, which is the partially connected XBRW(PXBRW). Partial connection on the left and right sides could avoid the excessive shear force at the beam end for bucklingrestrained steel plate shear wall with two?side connections. Moreover, the weakening of the middle part of XBRW alsoavoids the damage at the corners of buckling restrained steel plate shear wall. The mechanical behavior of PXBRW wasanalyzed by finite element simulation. It indicated that increasing the side connection height could effectively reduce theshear force at beam ends. Meanwhile, the stiffness and bearing capacity of structure also increased. By parametricanalysis, the recommended value of side connection height of PXBRW was determined, and the formulas for initial stiffnessand yield capacity of PXBRW were proposed. The analysis results show that the proposed theoretical formulas can be usedto calculate the initial stiffness and yield capacity of PXBRW with adequate accuracy. Furthermore, an equivalent bracemodel of PXBRW was presented for simplified structural analysis.
Keywords:X?shape buckling restrained steel plate shear wall; partial connection; initial stiffness; yield capacity;equivalent brace model
∗國家自然科學基金項目(51608180),黑龍江八一農(nóng)墾大學學成、引進人員科研啟動計劃課題(XDB?2017?05).
第一作者:劉文洋,博士,副教授,主要從事鋼結構抗震研究,Email:wyliu81@ 126. com.
[引用本文] 劉文洋,唐遠俊,孫玉宗,等. 局部連接 X 型屈曲約束鋼板墻受力性能研究[ J]. 建筑結構,2022,52(16):88?93. LIU Wenyang,TANG Yuanjun,SUN Yuzong,et al. Research on mechanical behavior of partially connectedX?shape buckling restrained steel plate shear wall[J]. Building Structure,2022,52(16):88?93.
