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| 研究生： |
高文良 Wun-liang Gao |
|---|---|
| 論文名稱： |
T頭鋼筋錨定於梁柱接頭之行為研究 Anchorage Behavior of Headed Bar in Beam-Column Joints |
| 指導教授： |
邱建國
Chien-Kuo Chiu |
| 口試委員: |
歐昱辰
Yu-Chen Ou 林克強 none 蕭輔沛 none |
| 學位類別： |
碩士 Master |
| 系所名稱： |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
| 論文出版年： | 2012 |
| 畢業學年度： | 100 |
| 語文別： | 中文 |
| 論文頁數： | 161 |
| 中文關鍵詞： | 梁柱接頭 、T頭鋼筋 、錨定長度 |
| 外文關鍵詞： | anchorage length |
| 相關次數： | 點閱：268 下載：24 |
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本研究共進行七組實尺寸鋼筋混凝土梁柱接頭試驗（四組內柱，三組外柱），利用T頭鋼筋錨定於梁柱交會區內以取代一般傳統彎鉤，而降低梁柱交會區配筋擁擠現象。研究目的除了解梁柱交會區內錨定長度需求與梁彎矩強度關係外，亦探討接頭內配置型式及不同受力型式等不同條件下是否滿足所需耐震性能。依本研究成果可知，梁柱接頭內配置以對接形式，其強度、韌性與變形能力不亞於搭接形式，且T頭鋼筋採對接形式於錨定長度足夠情況下，垂直載重下之破壞模式為鋼筋降伏及梁端混凝土壓碎；依外柱接頭試驗結果，當T頭鋼筋淨間距2.2db、梁柱交會區在低剪力比及強柱弱梁情況下，T頭鋼筋錨定於梁柱接頭之耐震使用長度建議用規範ACI 318-08規定錨定長度之1.23倍以上。
In this study, headed bars are adopted to replace traditional standard hooks for avoiding reinforcement crowding in the beam-column joints. Seven full size experiments (four of them are interior beam-column connections and three of them are exterior beam-column connections) were conduct to investigate the influence of headed bars on beam-column joints. Not only to understand the anchorage behavior of headed bars in beam-column joints, but to comprehend the effect on flexure moment of beams. The issue on whether the performance of beam-column joints with different arrangements of head bars satisfy the seismic requirement is also discussed.
For interior beam-column joints with two types of arrangement, i.e., butt and splices, the strength and ductility of the beam-column joints are found to be satisfactory. Additionally, for butt arrangement with enough anchorage length, the yielding of reinforcement and crush of concrete at beam end are obvious during incremental loading vertically. For the exterior beam-column joints, this study recommends the seismic resistant anchorage length of headed bars should be the ACI 318-08 provision multiplied by 1.23 times on condition that the clear spacing of headed bars is 2.2db, the beam-column joint belongs to the low shear ratio and strong column-weak beam pattern.
參考文獻
[1]ACI Committee 318, “Building Code Requirements for Structural Concrete and Commentary, ”American Concrete Institute, Farmington Hills, 2008.
[2]土木401-96，「混凝土工程設計規範與解說」，中國土木水利工程學會，臺北，民國96年。
[3]「結構混凝土設計規範與解說」，內政部營建署 (2002)。
[4]ACI-ASCE Committee 352, “Recommendations for Design of Beam-Column Joints in Monolithic Reinforced Concrete Structures,” ACI Journal, Proceedings, 2002.
[5]林克強，陳政宇，「高拉力鋼筋T頭錨定梁柱接頭行為研究」，第十屆中華民國結構工程研討會，桃園，民國99年12月。
[6]ACI Innovation Task Group 1 and Collaborators, “Acceptance Criteria for Moment Frames Based on Structural Testing （T1.1-01）,” American Concrete Institute, Farmington Hills, 2001.
