既有鋼筋混凝土建築物耐震補強設計邏輯之初探

The Study of Restrength Design Algorithm for Existing Reinforce Concrete Structure Being under an Earthquake

李錫霖(Shyi-Lin Lee) ； 張奇偉(Che-Way Chang) ； 陳光瑞(Guang-Rui Chen) ； 黃心怡(Hsin-I Huang)

《建築與規劃學報》 1卷1期 (2000/03) Pp. 39-52

https://doi.org/10.30054/JAP.200003.0003

摘要

台灣地處於環太平洋的地震帶上，大小地震發生頻繁，建築物之耐震能力為保障人民生命財產安全的重要指標。然建築物於其生命週期中，常因自然災害或人為因素而導致受損，進而影響其耐震能力。基於經濟性、時效性的考量，在不敲除重建下，若能經由適當之補強，實為一可行方法。本研究係以內政部建築研究所所發表之「既有鋼筋混凝土建築物耐震能力評估手冊」之詳細評估法為基礎，根據強柱弱樑之基本需求及樑柱不同之韌性表現，探討耐震能力不足之現有建築物補強設計之量化及選擇補強位置之基本邏輯。並探討翼牆、剪力牆、包覆鋼鈑及鋼斜撐等四種補強方式，比較其經濟性及優缺點，以做為實務設計之參考。本研究利用兩個實際案例，經由耐震能力提昇之效能比較可得知，剪力牆和鋼斜撐是最具經濟效益的補強方式，而翼牆會隨破壞模式和韌性指標的改變而影響經濟效益，包覆鋼鈑則因單價成本過高，經濟效益最差。

關鍵字

耐震能力 ； 破壞模式 ； 韌性 ； 補強設計

並列摘要

The Taiwan Island is located in a complex, tectonically active region between the Eurasian plate and Pacific plate. The building earthquake resistance capability is an important index for life and property protection. However in the life cycle of a building, sometimes the building earthquake resistance capability may be damaged by nature or manmade events. Under the consideration of moneysaving and timesaving, a feasible way is to restrength damaged buildings instead of reconstruction. This research is based on a detail assessment process provided by the Ministry of the Interior. According to the basic requirement for structure design on strong column and weak beam, the restrength design will be studied. Four restrength methods including wing wall、shear wall、steel plate and steel bracing will be considered and compared. The result can be provided for practical design. Two typical case are studied. The results show that the shear wall as well as the steel bracing is the most economical restrength method, and the wing wall is affected by the failure mode and ductility index. The steel pate method is the last choice because of the highest cost.

並列關鍵字

Earthquake resistance capability ； Failure mode ； Ductility ； Restrength design