- 摘 要
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(1天津大學(xué)建筑工程學(xué)院， 天津 300072； 2 天津大學(xué)建筑學(xué)院， 天津 300072；3 天津大學(xué)濱海土木工程結(jié)構(gòu)與安全教育部重點實驗室， 天津 300072)
［摘要］對2根偏心距不同的L形無孔鋼板連接式方鋼管混凝土組合異形柱進(jìn)行壓彎簡化模擬研究，并對簡化模型及實體模型進(jìn)行了破壞模態(tài)、豎向承載力、側(cè)向位移3方面的對比，結(jié)果表明：簡化模型基本能夠合理有效地模擬L形無孔鋼板連接式方鋼管混凝土組合異形柱的壓彎性能；在簡化模型的基礎(chǔ)上，對異形柱的壓彎性能進(jìn)行了參數(shù)化分析，分析發(fā)現(xiàn)提高鋼材強(qiáng)度能有效改善柱承載力，提高混凝土強(qiáng)度、連接板厚度對柱承載力及延性沒有明顯影響，柱承載力會隨著偏心距的增加而不斷下降，且下降程度不斷減小。
［關(guān)鍵詞］L形組合異形柱； 簡化模型； 壓彎模擬； 參數(shù)化分析
中圖分類號：TU398文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)06-0061-05
Simplified simulation study on compression-bending behavior of L-shaped special-shaped concrete-filled square steel tubular composite columns connected with non-porous steel plates
Jiang Baoqi1, Zhou Ting2, Chen Zhihua1,3, Li Yanbo1
(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 School of Architecture, Tianjin University, Tianjin 300072, China; 3 Binhai Civil Engineering Structure and Security Key Laboratory of the Ministry of Education, Tianjin University, Tianjin 300072, China)
Abstract:Simplified simulation study was carried out on compression-bending behavior of two L-shaped special-shaped concrete-filled square steel tubular composite columns connected with non-porous steel plates of different eccentricities. The comparison of failure modes, vertical bearing capacity and lateral displacement between the simplified model and the solid model was made. The results show that the simplified model can reasonably and effectively simulate the compression-bending behavior of special-shaped concrete-filled square steel tubular composite columns with non-porous steel plates. On the basis of simplified model, the parametric analysis of the compression and bending performance of special-shaped columns was carried out to find that increasing steel strength can effectively improve the bearing capacity of columns. The improving concrete strength and the thickness of connection plate has no obvious influence on the bearing capacity and ductility of columns. The bearing capacity of columns decreases with the increase of eccentricity, and the degree of decline decreases.
Keywords:L-shaped special-shaped composite column; simplified model; compression-bending simulation; parametric analysis
作者簡介：蔣寶奇，碩士，Email:523709066@qq.com。
