臺灣博碩士論文加值系統

隨著人口密度越來越大，高樓建築的需求也越來越大，而鋼筋混凝土所能提供的強度有限，在低層樓的斷面勢必要增大，如此一來會壓縮到低層樓的使用空間，故我們要提高鋼筋及混凝土的強度來增加空間的使用率。我們從日本TTK(東京鐵鋼)引進了高強度鋼筋（SD685）及續接器、焊接鋼筋、以及使用亞利預鑄場所拌之高強度混凝土（70MPa）來製作試體。試體部分一共設計6座，軸力比為10%與33%各三座，分別為傳統主筋連續加135度彎鉤箍筋、主筋續接加135度彎鉤箍筋以及主筋續接加焊接箍筋。測試方法為雙曲率加上軸力的反覆載重試驗。測試結果得到，焊接箍筋所呈現的韌性相較於135度彎鉤箍筋是較差；在建議公式中，其降伏應力可以提升到700 MPa至800 MPa。

The acceleration growth of population increasing the demand of high-rise building of which offer technical and advantages in a dense area. Reinforce concrete buildings with normal strength materials will produce lack of space and high-cost in high-rise building construction. A precast reinforced concrete (RC) column with high-strength material has advantage in reducing cost material, rapid construction in site. In this study, the precast high-strength RC built with high-strength concrete (70 MPa) ,used high-strength longitudinal (SD 685) and transverse (SD785) deformed rebar. Two precast concrete construction technology videlicet, grouted coupler splices for longitudinal reinforcement and butt-welded spices for transverse reinforcement were examined in this study.
Six large-scale high-strength columns were tested. A set of three columns was tested under 0.1 axial load ratio and other set of three were tested under 0.33 axial load ratio. In each group of three one benchmark column was used stirrup with 135 degrees of hook. Two other columns in each group were precast and utilized grouted couplers. One of two precast columns used hoop stirrup with 135 degrees of hook, and the remaining precast columns applied butt welded spliced for transverse reinforcement. The columns were tested using displacement-controlled double-curvature cyclic loading under constant axial load. The result of experiment exhibited columns used stirrup with 135 degrees hook exhibited better performance than columns utilized welded butt splices of transverse reinforcement. Since the stress of transverse reinforcement reach 700 to 800 MPa before large crack opening, the proposed shear design formula can be used to predict shear force for columns with high strength materials.

摘要
ABSTRACT
誌謝
目錄
表目錄
圖目錄
第一章 簡介
1.1研究背景
1.2文獻回顧
1.2.1 美國ACI ITG-4.3R-07
1.2.2 圍束箍筋建議公式
1.2.3 高強度柱剪力行為
1.2.4 灌漿套筒
1.3本研究目標
第二章 試體規劃
2.1試體設計
2.1.1 參數變化
2.1.2 材料準備
2.2試體裝置
2.3儀器裝設
2.3.1外部量測儀器
2.3.2內部量測儀器
2.4測試方法
第三章 測試結果
3.1材料試驗
3.1.1 混凝土
3.1.2 水泥砂漿
3.1.3 鋼筋
3.1.4 續接套筒
3.2遲滯迴圈與破壞行為
3.3剪應變與曲率
3.3.1剪應變
3.3.2曲率
3.4挫屈狀態
3.5應變計量測
第四章 設計建議
第五章 結論
參考文獻
附錄A
附錄B
附錄C
附錄D

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