- 摘 要
-
(1 鄭州大學(xué)土木工程學(xué)院， 鄭州 450001； 2 河南天豐節(jié)能板材科技股份有限公司， 新鄉(xiāng) 453000)
［摘要］通過對拆裝式箱式房屋的底框結(jié)構(gòu)進(jìn)行豎向分級加載試驗(yàn)，分析了其豎向抗彎剛度和承載力。試驗(yàn)表明：底框結(jié)構(gòu)的冷彎薄壁異形梁剛度較弱，但強(qiáng)度基本滿足設(shè)計(jì)要求。底框梁開洞處截面下翼緣焊接了補(bǔ)強(qiáng)板，保證了截面的強(qiáng)度和梁的整體剛度。為了研究立柱與頂?shù)卓蜻B接處的半剛性性能，采用ABAQUS有限元程序建立了立柱與頂?shù)卓騽傂赃B接的箱式房屋模型，分析了半剛性連接與剛性連接的差異。結(jié)果表明：立柱與頂?shù)卓蜻B接的半剛性性能對底框的剛度和承載力的影響較大，分析中應(yīng)予以考慮。
［關(guān)鍵詞］拆裝式箱式房屋； 冷彎薄壁； 抗彎性能； 半剛性連接； 主應(yīng)力
中圖分類號：TU392-5文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)10-0022-06
Experimental study on mechanical behavior of the bottom frame structure of removable box house
Zhang Junfeng1， Yang Dayong1， Hu Wenti2， Liu Cunfang2
(1 School of Civil Engineering， Zhengzhou University， Zhengzhou 450001， China；
2 Henan Tianfon Energy-saving Panel Science and Technology Co.， Ltd., Xinxiang 453000， China)
Abstract:Through the vertical multistage loading test on the bottom frame structure of removable box house, both the vertical flexural rigidity and bearing capacity were analyzed. The experiment shows that the irregular cold-formed thin-walled steel beam of the bottom frame structure has lower stiffness, but the strength satisfies the design requirements basically. The overall rigidity and the section strength are assured by the welded plate at the lower flange of the opening section of bottom frame beam. To study the semi-rigid behavior of the connections between the column and the top and bottom frames, the box house model with rigid connection between the column and the top and bottom frames was established by ABAQUS finite element software to analyze the differences between the semi-rigid connections and the rigid connections. The results show that the effect of semi-rigid performance of connections between the column and the top and bottom frames is great on the stiffness and the bearing capacity of the bottom frame, which should be taken into account in design.
Keywords:removable box house； cold-formed thin-walled steel； flexural behavior； semi-rigid connection； principal stress
*河南省高等學(xué)校重點(diǎn)科研項(xiàng)目（16A560010）。
作者簡介：張俊峰，博士，講師，Email：zhangjunfeng@zzu.edu.cn。
- 下載地址
-
