建築結構耐震極限承載力之研究

A Study of Seismic Ultimate Bearing Capacity for Building Structures

歐祐德(You-De Ou)

指導教授 ： 金文森

朝陽科技大學/理工學院/營建工程系/碩士(2011年)

摘要

臺灣位於環太平洋地震帶上，時常受到地震災害的威脅，且由921地震勘查結果顯示部分校舍結構耐震能力堪慮，大多數校舍均有耐震能力不足及不符合現有耐震設計規範之要求。本文先以簡單的構架案例用不同軟體分析，研究構架的極限承載力，載重-位移曲線，塑性鉸之形成，桿件軸力、剪力、彎矩的差異。既有校舍耐震能力評估是以結構各桿件之實際尺寸，材料性質及斷面配筋進行分析。然後模擬不同假設條件的校舍進行結構基底剪力及耐震能力比較，並針對其耐震能力不足之處，提供結構補強的方法與建議，研究結果可在未來能作為耐震補強工程之參考。

關鍵字

極限載重 ； 側推分析 ； 耐震能力

並列摘要

Taiwan is located in circum-Pacific seismic belt, often under the threat of earthquake. Seismic prospecting results from the 921 earthquake, parts of the school buildings’ structural seismic resistant capacity are worthy of consideration. Most school buildings’ seismic resistant capacity are inadequate and do not meet current seismic design code. First several simple frame cases were used to analyze the ultimate load of structure, load-displacement curve, formation of plastic hinge, difference between the axial force, shear force and bending moment by different computer program. Then, the base shear capacity and seismic resistant capacity of school building were compared based on the actual size of each member, material properties and section of steel reinforcement. Simulations were carried out with different assumptions. The suggestion of retrofitted methods for the inadequate seismic resistant capacity is provided. The research result can serve as a reference for seismic retrofitting engineering in the future

並列關鍵字

Pushover Analysis ； Seismic Evaluat ； Ultimate Load

參考文獻

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【6】FEMA 273, NEHRP Guidelines for the Seismic Rehabilitation of Buildings, Federal Emergency Management Agency, Washington, D.C.,1997.

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