鋼筋混凝土結構補強接合部耐震行為之研究

本研究主要對於鋼框架斜撐及耐震間柱兩種預鑄補強工法進行規劃，由於補強界面接合部為整體構架是否能均勻傳遞側向承載力之關鍵，故對於接合部著重進行設計，並採用高強度纖維樹脂砂漿作為接合之填充材料，從側向反覆加載實驗結果顯示，鋼框架斜撐補強試體最大側力強度達到1,528 kN，而耐震間柱補強試體最大側力強度達到825 kN，兩者與基礎試體之最大側力強度相比，分別提升3.57倍及2.02倍之強度，另補強構件亦發展挫屈及變形之效應，表現出其均能有效提供整體構架之耐震能力，也顯現高強度纖維樹脂砂漿能提供良好之圍束力。透過實驗結果比較各式補強工法之效果，提供別於傳統工法之補強方式並提升建物耐震能力之需求。

關鍵字

高強度纖維樹脂砂漿；鋼框架斜撐；鋼板阻尼器；補強界面接合部

並列摘要

This study mainly focused on two seismic retrofitting methods for the steel-braced frame and the steel panel damper (SPD). The most important thing is the role of the joint interface for the retrofitted structure is whether the whole frame can transfer the lateral force efficiently. Therefore, this study focus on the design of the joint interface of the retrofitted frame. Using high-strength fiber resin mortar as retrofitting material. The experimental results show that the deformation capacity of steel-braced frame specimen is increased 3.57 times than the non-retrofitted specimen, and the deformation capacity of the steel panel damper specimen is increased 2.02 times than the non-retrofitted specimen. It shows that the retrofitting components can effectively provide the seismic resistance of the overall structure. In the experiment, we understand the importance of the joint interface of the retrofitted frame, so we also study two retrofitting methods, namely compression-restrained brace and retrofitted by internal frame. An analytical model is adopted in this research based on the pushover analysis with ETABS commercial software. The results show that the analytical results are more conservative than the experimental results with the proposed retrofitting methods.