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題 名 | 應用自攻螺絲於直交集成板接合之剪斷抵抗探討=Investigation of the Shear Resistance Performance of Cross-Laminated Timber Connections with Self-Tapping Screw Applications |
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作 者 | 葉民權; 林玉麗; 顏大翔; 林秀鑾; | 書刊名 | 臺灣林業科學 |
卷 期 | 34:3 2019.09[民108.09] |
頁 次 | 頁179-195 |
分類號 | 436.51 |
關鍵詞 | 直交集成板; 自攻螺絲; 接合; 剪斷抵抗; Cross-laminated timber; Self-tapping screw; Connection; Shear resistance; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以自攻螺絲為扣件進行直交集成板之接合,探討不同接合型式及不同用釘角度對接合剪斷抵抗之影響。利用國產柳杉製造五層五片對稱異等級直交集成板,並考量南方松混合製造之影響。結果顯示直交集成板以方栓接合型式之最大破壞剪斷容量、降伏剪斷載重及初始剛性分別為對接型式之16、13及22%,搭接型式則為對接型式之63、64及38%。在不同用釘角度方面,以90°直釘及45°斜釘方式固定之接合最大剪斷破壞容量為30°~45°複斜用釘方式之40%,而接合之降伏剪斷載重分別為以30°~45°複斜用釘方式之30及47%,另接合之初始剛性分別為30°~45°複斜用釘方式之11及35%。以南方松為外層集成元之直交集成板在以自攻螺絲所組成之對接型式可以有效提升接合剪斷抵抗效果。以自攻螺絲所組成之接合部位依塑性率分類,方栓之接合屬於高延展性,直交集成板之對接屬於中度延展性,直交集成板之搭接則屬於低延展性。 |
英文摘要 | The effects of connection types and nailing angles on the shear resistance performance of cross-laminated timber (CLT) connections using self-tapping screws were investigated in the study. The 5-layer- and 5-ply-CLT connections with heterogeneous-grade construction were made using Cryptomeria japonica plantation timber, and were also mixed with southern pine (Pinus spp.). Results showed that the maximum shear capacity, yield shear load, and initial stiffness of a CLT surface spline connection were 16, 13, and 22%, respectively, of a CLT butt connection. The maximum shear capacity, yield shear load, and initial stiffness of a CLT half-lap connection were 63, 64, and 38%, respectively, of a CLT butt connection. As to effects of nailing approaches, the maximum shear capacity of connections fastened with self-tapping screws at angles of either 90° or 45° were 40% of that with double angles of a 30°~45° approach. The yield shear loads obtained from both 90° and 45° nailing approaches were 30 and 47%, respectively, of that with double angles of the 30°~45° approach. Values of initial stiffness were 11 and 35%, respectively, of that with double angles of the 30°~45° approach. Improvement in the shear resistance was found in a butt connection fastened with self-tapping screws when southern pine laminae were used for outer layers of the CLT. CLT connections fastened with self-tapping screws were classified based on the obtained ductility. The connection assembled with a surface spline was classified into the high-ductility category, the CLT butt connection was in the moderate-ductility category, and the CLT half-lap connection was in the low-ductility category. |
本系統中英文摘要資訊取自各篇刊載內容。