- 期刊
RC構架內砌磚墻承受面內水平載重之強度與剛度分析
Capacity and Stiffness of Unreinforced Infill Brick Walls Subject to In-Plane Lateral Load
摘要
我國傳統街屋之構築上，往往大量使用磚牆作為隔間牆及隔戶牆。此類建築之結構設計常採用經驗設計而未經詳實結構計算，或者僅以非結構牆之角度作分析處理。此類建築在921地震中遭受相當比例之破壞，由於我國目前缺乏完整之磚牆設計方法，如何分析此類內砌磚牆之強度往往成為耐震評估及補強之困擾。國外雖已有完整之規範規定及諸多磚牆研究，然國外磚牆構法與我國紅磚結構的慣用構法並不相同，故無法貿然應用於國內之環境。國內外有關磚牆的極限強度大多採用回歸公式計算之，對磚牆的剛度則少有涉及。本文針對國內之磚牆試驗結果，以破裂路徑原則探討RC構架中後砌磚牆之極限強度。以平板力學探討磚牆於極限點之剛度。分析值與試驗值做比較發現，本文預測公式可合理推估RC構架內砌磚牆之極限強度及剛度，亦即其P-△曲線。
並列摘要
Non-reinforced infill brick walls are frequently used as structural elements for existing street buildings in Taiwan. However, the seismic behaviors and design formulas are not well specified in the existing Taiwan Building Code. Although there are lots of studies on brick walls in foreign countries, these foreign equations are not applicable to domestic brick walls. Because the dimensions of brick blocks and brick wall construction methods are different from country to country. Most of the past researches on the ultimate capacity of brick walls were based on empirical equations. Few discussed the stiffness of brick walls. This paper proposes a rational technique for calculating lateral stiffness using the plate equation. The analytical P-￡Gcurves of infill brick walls are compared to the experimental P-￡Gcurves with reasonable accuracy.