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(1 四川省建筑設(shè)計(jì)研究院有限公司, 成都 610095; 2 四川省建筑設(shè)計(jì)研究院有限公司復(fù)雜結(jié)構(gòu)設(shè)計(jì)研究中心, 成都 610095; 3 天津大學(xué)建筑工程學(xué)院,天津 300072; 4 河北工程大學(xué)土木工程學(xué)院, 邯鄲 056000)

摘要: 為明確膠合木鋼填板-螺栓節(jié)點(diǎn)的半剛性特征,進(jìn)行了考慮螺栓行距、列距、列數(shù)和膠合木截面高度等參數(shù)變化的膠合木鋼填板-螺栓節(jié)點(diǎn)抗彎試驗(yàn). 得到節(jié)點(diǎn)抗彎剛度后與歐洲木結(jié)構(gòu)設(shè)計(jì)規(guī)范((BSEN 1995-1??2004))、日本木質(zhì)構(gòu)造接合部設(shè)計(jì)手冊里節(jié)點(diǎn)抗彎剛度公式計(jì)算結(jié)果進(jìn)行對比,結(jié)果表明規(guī)范公式計(jì)算的節(jié)點(diǎn)抗彎剛度均小于試驗(yàn)值,通過修正規(guī)范公式可以得到更加準(zhǔn)確的計(jì)算結(jié)果. 針對日本木質(zhì)構(gòu)造接合部設(shè)計(jì)手冊的公式引入了滑移系數(shù)修正值和順紋嵌入剛度修正值,修正后的公式準(zhǔn)確度高,在膠合木結(jié)構(gòu)設(shè)計(jì)的過程中可以用于計(jì)算節(jié)點(diǎn)的抗彎剛度并得到節(jié)點(diǎn)抗彎剛度折減系數(shù).

關(guān)鍵詞: 膠合木鋼填板-螺栓節(jié)點(diǎn); 抗彎剛度; 計(jì)算公式; 折減系數(shù); 膠合木結(jié)構(gòu)

中圖分類號:TU366. 3 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2023)07-0125-05

DOI:10. 19701 / j. jzjg. SADI2325

Research of bending stiffness of glulam bolted joints with slotted-in steel plates

ZHAO Shixing1,2, HE Fei1,2, LIU Hongbo3,4, YANG Shuheng1,2, ZHAO Jingxian3, ZHOU Qiaoling1,2

(1 Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China;2 Complex Structure Design and Research Center, Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. ,Chengdu 610095, China; 3 Department of Civil Engineering, Tianjin University, Tianjin 300072, China;4 Department of Civil Engineering, Hebei University of Engineering, Handan 056000, China)

Abstract: In order to clarify the semi-rigid characters of glulam bolted joints with slotted-in steel plates, bendingexperiments were conducted considering the variation of bolt row spacing, column spacing, column number and sectionheight of glulam. Compared with experimental results of bending stiffness, the calculate results of bending stiffness formulain Design of timber structures (BSEN 1995-1??2004) and Design Manual for Engineered Timber Joints were conservative.The results show that the bending stiffness calculated by the standard formula is less than the test value, and more accuratecalculation results can be obtained by modifying the standard formula. The modified value of slip coefficient and parallel-tograin embedded stiffness were introduced to modify the calculate formula in Design Manual for Engineered Timber Joints.This modified formula provides high accurate results, which could be used to calculate the bending stiffness of joints andobtain the reduction coefficient of bending stiffness of joints in the design of glulam structure.

Keywords:glulam bolted joints with slotted-in steel plate; bending stiffness; calculate formula; reduction factor; glulam structure

∗四川華西集團(tuán)科技項(xiàng)目(HXKX2019 / 001).

第一作者:趙仕興,碩士,教授級高級工程師,一級注冊結(jié)構(gòu)工程師,英國注冊結(jié)構(gòu)工程師,主要從事高層建筑結(jié)構(gòu)、復(fù)雜結(jié)構(gòu)的設(shè)計(jì)與研究,Email:316458931@ qq. com.

[引用本文] 趙仕興,何 飛,劉紅波,等. 膠合木鋼填板-螺栓節(jié)點(diǎn)抗彎剛度研究[ J]. 建筑結(jié)構(gòu),2023,53(7):125-129. ZHAO Shixing,HE Fei,LIU Hongbo,et al. Research of bending stiffness of glulam bolted joints with slotted-in steelplates[J]. Building Structure,2023,53(7):125-129.