- 摘 要
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（1 濰坊學院建筑工程學院， 濰坊 261061； 2 貴州大學空間結構研究中心， 貴陽 550003；3 陸軍勤務學院軍事設施系， 重慶 401331）
［摘要］方鋼管剪力鍵在鋼空腹夾層板的整體受力中起著重要作用。以工程實踐為背景，對兩個足尺方鋼管剪力鍵節(jié)點試件進行了靜力加載試驗，得到了方鋼管剪力鍵的屈服強度、強屈比以及延性系數(shù)。根據(jù)試件破壞模式確定了方鋼管剪力鍵屈服狀態(tài)時的控制截面，通過定義控制截面的有效受力區(qū)域，推導了方鋼管剪力鍵抗剪承載力設計公式。與試驗數(shù)據(jù)對比，結果表明，采用公式計算的T形鋼肋方鋼管剪力鍵和H形鋼肋方鋼管剪力鍵屈服承載力與試驗結果誤差分別為1.08%和6.7%。研究結論可為鋼空腹夾層板的剪力鍵截面設計和加勁板尺寸的確定提供參考。
［關鍵詞］方鋼管剪力鍵； 鋼空腹夾層板； 靜力加載試驗； 抗剪承載力
中圖分類號：TU393-3，TU318-1文獻標識碼：A文章編號：1002-848X(2020)13-0054-05
Design method for shear capacity of square steel tube shear key
BAI Zhiqiang1,2, MA Kejian2, LU Yaqin2, SUN Tao3
(1 Department of Architectural Engineering, Weifang University, Weifang 261061, China； 2 The Spatial Structures Research Center, Guizhou University, Guiyang 550003, China； 3 Military Installation Department, Army Logistic University of PLA, Chongqing 401331, China)
Abstract:The square steel tube shear key plays an important role in the overall stress of steel open-web sandwich plate. Based on the engineering practice, the static loading tests of two full-scale square steel tube shear key joints were carried out, and the yield strength, strength yield ratio and ductility coefficient of the square steel tube shear key were obtained. According to the failure mode of the test piece, the control section of the square steel tube shear key in the yield state was determined. By defining the effective bearing area of the control section, the shear capacity design formula of the square steel tube shear key was derived. Compared with the test data, the results show that the error between the yield capacity of the T-shaped rib square steel tube shear key and H-shaped rib square steel tube shear key calculated by the formula and the test results is 1.08% and 6.7% respectively. The research results can provide reference for the design of shear key section for steel open\|web sandwich plate and the determination of stiffener size.
Keywords:square steel tube shear key; steel open-web sandwich plate; static loading test; shear bearing capacity
*貴州省科技基金（黔科合基礎【2019】1090），濰坊高新區(qū)科技惠民計劃項目（2019KJHM15），濰坊學院博士基金項目（2019BS14）。
作者簡介：白志強，博士，副教授，Email:bzq2001@163.com。
