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(1 哈爾濱工業(yè)大學(xué)土木工程學(xué)院  150090；2 浙江精工鋼結(jié)構(gòu)有限公司  廣州 510091)

［提要］  考慮受力蒙皮組合體試驗(yàn)的特殊性，對普遍采用的懸臂梁式加載方式進(jìn)行了改進(jìn)，提出沿對角線加載的方法。為研究跨越多檁條和少檁條的受力蒙皮體抗剪性能的區(qū)別，對連接件形式和間距、框架和檁條的形式和間距均相同的兩組試件進(jìn)行了對比試驗(yàn)。利用曲線擬合方法對試驗(yàn)數(shù)據(jù)進(jìn)行了量化，得到了兩組試件的抗剪剛度。結(jié)果表明，跨越多檁條的受力蒙皮結(jié)構(gòu)抗剪剛度較跨越少檁條的有較大提高，承載力稍有降低。

［關(guān)鍵詞］  受力蒙皮  加載方式  對比試驗(yàn)  曲線擬合  剛度

Comparing Experiments of the Stressed Skin Diaphragm Spanning Several and Few Purlins/Authors:Zhang Wenyuan1,Zhang Yaochun1,Wang Ying1,Chen Guodong2,Huang Mingxin2(1 School of Civil Eng., Harbin Institute of Technology, Harbin 150090, China; 2 Zhejiang Jinggong P-D Steel Building Co., Ltd., Guangzhou 510091, China)

Abstract:Concerning the specialty of the testing of stressed skin diaphragm assembly, the current loading method of cantilever beam test is improved by the diagonally loading method. In order to investigate the differences of the shear behavior between the stressed skins spanning several purlins and few purlins, which have the same forms and spaces of the connections and purlins, comparing experiments are carried out. Using the curve fitting method, the test results are quantified. The shear rigidity of two specimens is gained. It shows that the shear rigidity of the diaphragm spanning several purlins is quite higher than that spanning few purlins, but the carrying capacity of the former is a little lower than that of the latter.

Keywords:stressed skin；loading method；comparing experiment；curve fitting；stiffness