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超高強度鋼高層建築結構之耐震評估研究 = Seismic Evaluat...

劉琨泰

超高強度鋼高層建築結構之耐震評估研究 = Seismic Evaluation of High Rise Steel Buildings Using Ultra High Strength Steels

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	Seismic Evaluation of High Rise Steel Buildings Using Ultra High Strength Steels
作者:	劉琨泰,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2014[民103]
面頁冊數:	87面圖，表 : 30公分;
標題:	高層建築
標題:	High-rise buildings
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/97514079698915886300
附註:	參考書目：面29-31
附註:	103年12月16日公開
摘要註:	世界各國人口隨商業活動日漸集中於都會區，而建築房屋也因此往高層化作發展。儘管如此，國內外目前仍很少有研究對上述高層建築物之結構設計與性能評估法進行深入研究。臺灣位於環太平洋地震帶上故建築物耐震需求高，特別是台北盆地效應對高層建築可能影響甚鉅。本研究首先依照國內現行法規，設計與分析兩棟位於台北二區之40層樓抗彎矩鋼構架、以進行案例研究。案例建築物40F-SN490B之柱構材皆使用SN490B鋼材，另一案例建築物40F-SM570則在下部14個樓層柱改用SM570高強度鋼材。研究結果顯示，下部樓層柱改用SM570鋼材可減小斷面故節省用鋼量，但為使設計地震力下層間位移角小於千分之五而上部樓層梁須用較大斷面，故結果案例的40層建築物總用鋼量節省137噸、約2.7%。之後，本研究採用14組地震歷時紀錄，並考量迴歸期475年與2500年共兩種地震強度，來進行非線性動力歷時分析、以分析案例建築物層間位移角等受震需求。結果顯示，下部樓層柱改用SM570鋼材之案例建築物層間位移角之最大反應、平均值與標準差皆較小。此外，分析所獲受震變形需求為2.30%，小於目前規範對所要求之4%。本研究最後參考FEMA356，分別以層間位移角2.5%與5%作為生命安全與倒塌防止之性能界限，以對案例建築物進行易損性分析。結果顯示，兩棟案例建築物對生命安全界限要求之易損曲線相似，而下部樓層柱改用SM570鋼材之案例建築物更能滿足倒塌防止要求。 Case studies were carried out to investigate the benefits of applying high strength steels to high-rise buildings in seismically active zones. In detail, two 40-story steel moment frames were first designed for the Taipei Microzonation II. One example building uses SN490B steel in the columns. The other uses SM570 steel to replace SN490B in the columns from the 1st to the 14th story. The buildings were designed in accordance with building codes and design guides. The stress ratios and story drift ratios were limited to 0.9 and 0.005. The use of SM570 steel was found to save steel materials up to 137 tons steel in total, approximately 2.7%. To limit the story drift ratio to 0.005, the beam sections need enlarging when using the SM570 steel. The seismic evaluation was then made using nonlinear time history analysis with 14 sets of ground motions scaled to have the return periods of 475 years and 2500 years. The example building using the SM570 steel was found to have smaller drift responses and variations. In addition, the analyzed 2.30% drift demand is smaller than the code requirement, i.e. 4%. By referencing FEMA 356, the fragility of example buildings was finally assessed using the drift ratios of 2.5% and 4% for the limit states of life safety and collapse prevention. For the limit state of life safety, the example buildings were found to have similar fragility. But for the limit state of collapse prevention, the example building using the SM570 steel was found to be superior to the other. The results of case studies have shown the benefits of applying high strength steels to high-rise buildings in seismically active zones.

超高強度鋼高層建築結構之耐震評估研究 = Seismic Evaluation of High Rise Steel Buildings Using Ultra High Strength Steels
劉, 琨泰

超高強度鋼高層建築結構之耐震評估研究 = Seismic Evaluation of High Rise Steel Buildings Using Ultra High Strength Steels / 劉琨泰撰 - [高雄市] : 撰者, 2014[民103]. - 87面 ; 圖，表 ; 30公分.
參考書目：面29-31103年12月16日公開.
高層建築High-rise buildings

超高強度鋼高層建築結構之耐震評估研究 = Seismic Evaluation of High Rise Steel Buildings Using Ultra High Strength Steels
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