方螺箍混凝土梁耐震行為研究

Seismic Behavior of Reinforced Concrete Beams with Rectangular Spiral Reinforcement

10.6849/SE.201703_32(1).0001

王柄雄(Ping-Hsiung Wang)；歐昱辰(Yu-Chen Ou)；尹衍樑(Samuel Y. Yin)；王瑞禎(Jui-Chen Wang)；吳振維(Chen-Wei Wu)；陳智軒(Chih-Hsuan Chen)；張國鎮(Kuo-Chun Chang)

方螺箍 ； 梁 ； 塑鉸 ； 反覆載重 ； rectangular spiral ； beam ； plastic hinge ； cyclic loading

結構工程

32卷1期（2017 / 03 / 01）

5 - 23

繁體中文

本文進行鋼筋混凝土梁橫向鋼筋採連續方形螺箍之試驗研究，文中規劃三組梁柱接頭外柱接頭試體，其梁箍筋分別為傳統橫箍、單個方螺箍及兩個方螺箍嵌合型式，探討在梁端塑鉸行為控制前提下，梁受反復載重作用之耐震性能。試驗結果顯示，單方螺箍梁試體與傳統橫箍梁之耐震性能相近，而雙方螺箍梁由於塑鉸端部之箍筋缺乏適當錨定，以致在大側向變位之反覆加載下會有較嚴重的破壞。在箍筋製作的比較上，方螺箍可採自動化設備生產且組立快速，可省去傳統箍筋之彎鉤用量約25%，及節省箍筋加工綁紮的費用與時間。

This paper presents an experimental study on reinforced concrete beam with continuous rectangular spiral as transverse reinforcement. Three exterior beam-column joint specimens with different beam detailing were devised to exhibit beam hinging and to examine their seismic performance under pseudo-static cyclic loading. Two beams with single and double rectangular spirals were introduced to compare with the one with traditional hoops. Test results show that beam specimen with single rectangular spiral has comparable hysteresis behavior compared to the traditional one, while the one with double rectangular spiral exhibits more degradation due to inadequate detailing at the end of spiral. Without the need of anchored hooks on each hoop, beam with rectangular spiral can save around 25% of transverse reinforcement in comparison with traditional hoops. Moreover, rectangular spiral can be automatically produced and easily erected with less labor effort.

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