木結構剪力牆釘接方式對水平剪力抵抗之影響

Influence of Nailing Schedules of Shear Wall on Horizontal Shear Resistance for Wood Framing Structure

葉民權(Min-Chyuan Yeh) ； 張桂英(Kuei-Ying Chang) ； 林溫章(Wen-Chang Lin) ； 胡志鋒(Chih-Feng Hu)

《林產工業》 16卷4期 (1997/12) Pp. 637-654

摘要

本研究利用實際尺寸牆面進行實驗，探討不同之箱用釘規格及不同之用釘間距對木結構剪力牆之水平外力抵抗效果之差異，以期作為業者施工及設計時之參考。剪力牆之間柱及框板採用No.2等級之雲杉一松一冷杉類2 x 4木材，木質板採用1.2cm厚之定向長薄片形粒片板，以尺寸為1.2m x 2.4m兩片板組成2.4m x 2.4m之牆面進行測試，結果顯示箱用釘直徑愈大則剪力牆承載水平外力效果愈佳，以10d釘組成的剪力牆之最大剪斷強度大於8d釘組成的剪力牆13.8%，且大於6d釘所組成的剪力牆約21.0%，但8d釘和6d釘所組成之牆面則無明顯差別。剪力牆用釘間距愈小則抵抗水平載重能力越佳，以15cm釘間距所組成的牆其最大剪斷強度較20cm釘間距組成的強度高出19.6%，且又較25cm釘間距組成的牆高出37.4%，而20cm釘間距所組成的剪力牆則大於25cm釘間距14.9%。剪力牆之剪斷剛性係數較不受箱用釘直徑之影響，而隨用釘間距之縮短而提高，以釘間距15cm組合之剪力牆面較釘間距20cm牆面之剛性高26.8%，同時較釘間距25cm牆面高48.4%，而以釘間距20cm組合之牆面其剛性則較釘間距25cm牆面高17%。

關鍵字

剪力牆 ； 水平剪力抵抗 ； 剪斷強度

並列摘要

The purpose of the study is to investigate the effects of the types of box nails and nailing schedules on the horizontal shear resistance of shear wall. The No.2 grades of 2X4 SPF lumber were used as materials for studs and top and sale plates of shear wall. Two 1.2cm. thick OSB panels with 1.2X2.4 m in size were applied to each wall frame as sheathing materials. The results indicated that the performance of shear wall is improved as the larger diameter of nails used to framing the wall and the smaller nailing spacing used along the edges of panels. The values of ultimate racking strength of shear wall fabricated with 10d nails is 13.8% higher than that of fabricated with 8d nails and 21% higher than that of fabricated with 6d nails. The shear wall fabricated with 15 cm in nailing spacing along the edges of panels has 19.6% higher in ultimate racking strength as compared to that of fabricated with 20 cm in nailing spacing, and 37.4% higher than that of fabricated with 25 cm in nailing spacing. The shear stiffness of shear wall were not affected by the diameters of box nails used, however, can be improved by shortening the nailing spacing. The shear wall fabricated with 15 cm in nailing spacing along the edges of panels has 26.8% and 48.4% higher in shear stiffness as' compared to that of fabricated with 20 cm and 25 cm in nailing spacing, respectively. And the wall fabricated with 20 cm in nailing spacing is 17% higher in shear stiffness than the wall with 25 cm spacing.

並列關鍵字

shear wall ； horizontal shear resistance ； racking strength