輕隔間牆在台灣的建築工程使用上相當普遍，但其在地震作用下之結構行為及安全性則很少人作探討。且從台灣近幾年的震害經驗顯示，在中小型地震時，結構體雖不致損壞，但輕隔間牆這類非結構物卻已遭受破壞，而造成不小的損失；其中以填充有輕質砂漿的濕式隔間牆最嚴重。

本文主要目的在透過輕隔間牆之耐震試驗，了解台灣目前不同工法之輕隔間牆其破壞現象以及與層間變位角之對應關係，並與美國USG建議工法之乾式輕隔間牆作比較，了解耐震性能方面的優劣及差異性。本研究首先製作了5座面內及4座面外之輕隔間牆，以千斤頂控制其層間變位量進行試驗，並記錄各試體在不同階段下之破壞情形。

從試驗中觀察到台灣輕隔間牆在地震過後主要破壞行為可分為構件與板材兩部分。構件破壞包括：釘孔破壞、自攻螺絲歪斜、立柱與U形槽鐵腹板擴孔、立柱翼板內凹以及水管剪斷。板材破壞行為則有：板材接縫開裂、受擠壓產生皺摺碎裂、挫屈隆起凹陷以及與立柱脫離。由實驗結果可知，濕式試體在大層間變位角時恐有面外倒塌的可能性，威脅到使用者生命安全；且預埋在其內部的水管在地震過後也可能會遭剪斷，造成空間機能使用上的困難。進一步比較不同的試體發現，乾式輕隔間牆的剛度主要來自板材；而濕式試體則因內部有填充輕質砂漿束制試體周圍之火藥擊釘，所以初始剛度明顯提升，但當火藥擊釘遭剪壞或拔起後，輕質砂漿所能提供之剛度則極為有限。本研究於SAP2000電腦模型中建立濕式試體之數值模型，亦得到相同分析結果。

最後本文根據實驗結果及Vision2000之地震危害層級定義，將台灣輕隔間牆不同的破壞階段與其對應之層間變位角，分為無害階段、局部破壞階段，震後需維護階段，並且歸納出其在不同階段之震後破壞修復金額，以方便使用者或設計者參考。

While the partition walls with light-gauge steel framing are commonly used in Taiwan, their seismic behaviors and robustness under earthquakes haven’t been thoroughly studied. Some post-earthquake reconnaissance reports in Taiwan revealed that the building structures could resist the small to moderate seismic events; nevertheless, dry-wall system with mortar-infill, the partition wall systems, especially these in the buildings could be damaged and brought a considerable loss after a medium level earthquakes.

This thesis studies the horizontal-drift-resistance performances of the partition wall systems, and their mechanical behaviors of damage pattern against storey drift in cyclic loading tests. The experimental results are compared to the drywall systems assembled by the construction guide issued by the USG. This thesis also discuss the variant performances between the partition wall systems in the U.S. and in Taiwan. Firstly, in this study, nine partition wall specimens were tested in the experimental program. For the partition walls are considered drift-sensitive, the experimental loading steps therefore are displacement controlled by using an actuator. Five of the specimens were tested in the in-plane direction, while the other four were subjected to the out-of-plane loading. The damage and failure mode were investigated and recorded during each drift level.

Some damage patterns of the partition specimens have been revealed after the experiments. For the framing elements, the failure modes included the damaging of the nail apertures, the tilting of the tapping screws, the reaming of the apertures at the web of the U runners and vertical studs, buckle-induced indentation at the flange of the studs, and shear failure of the water piping in the specimen. And for the panels, the cracking at the joints between panels, detaching from the studs, and buckling-induced crashing and deformation have been observed. From the testing result, it showed that the mortar-filled partitions specimens could have the failure mode of out-of-plane collapse and fracture of the water piping, which may be harmful to the occupants and impede the functional operation of a building. Furthermore, from comparison of the drywall and mortar-filled partitions, it is found that the stiffness of the drywall partitions was provided by the cladding panels. For the mortar-reinforced specimens, at the beginning they were effectively stiffened by edge fastening screws restrained in the mortar; nevertheless, after the fastening screws had been cut off by shear loading, the contribution of the stiffness from the mortar were limited. The same results could also be found in the numerical model in SAP2000.

At last, according to the Vision 2000 Performance-Based Earthquake Engineering design methodology, this study categorized the damage stages and their corresponding storey-drift into three levels of no-damage, slight-damage, and moderate-damage, and reparable. Moreover, the amounts of their respective damage-repairing costs were also estimated so that the results could be used as a reference for designers and practitioners.

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