台灣中南部常見典型RC 低層街屋，根據歷年地震勘災經驗發現，此種建築垂直街道方向有大量隔戶牆，平行街道方向因應通風、採光與動線等之建築需求，常存在相當面積之開口，無法配置完整牆體而削弱建物耐震力，形成耐震之弱向，在地震中常發生沿街道方向的軟弱底層破壞。本研究之目的為克服因空間使用性或底層柱緊鄰地界之慣用校舍建築耐震補強工法，難以應用於既有典型街屋之影響，綜合考量結構特性與使用者需求，兼顧以低成本、短工期與足夠效益之簡易補強工法，期望以不需開挖基礎、乾式施工且可於構架內施作，以提高民間建築業主對耐震補強的意願。
此工法以提升RC 構件韌性為基本概念，配合鋼構件自重輕、加工、安裝容易之特性，設計將鋼骨構件以化學錨栓附加於構架柱內側面及構架梁下方以補強柱構件壓力側與剪力強度，並提出兩種可能的接合部形式，第一種為承壓接合(Compression noly)，柱、梁補強鋼骨僅接觸不續接，使柱補強鋼骨位於RC 柱斷面受彎壓力側時可貢獻壓應力減輕混凝土負擔，位於受彎拉力側時不貢獻拉應力以確保斷面韌性；第二種為彎矩接合(Moment connection)，將柱、梁補強鋼骨翼鈑及腹鈑銲接接合，以提高靜不定度與應力重分配之能力。
本研究透過構件試驗確認補強效果，共設計三座試體，分別為：無補強柱試體C0、承壓接合補強試體CR-C、彎矩接合補強試體CR-M，過程中施加模擬靜載重之固定軸壓，進行懸臂式往復側推加載。
試驗觀察結果顯示，補強試體斷面之中性軸移動至偏向補強鋼骨側，造成RC柱斷面受拉區域增加，整體裂縫分佈形態較為均勻散佈，有助於提高能量之消耗，其吸收之能量約為無補強試體的2.0倍。兩座補強試體於預定補強方向之初始剛度、極限強度、韌性及能量消耗皆明顯高於無補強試體，補強後極限側力約為無補強試體之2.5 倍，顯示補強措施確實有效，且承壓接合亦可達到預期補強功能。彎矩接合補強試體於正反加載方向皆有提高剛度及強度效果，能量消耗亦優於承壓接合補強試體，但彎矩接合試體之鋼骨位於受拉側時，梁補強鋼骨錨栓因額外拉力需求發生拉拔破壞，補強效果反而不如鋼骨位於受壓側者。

In Taiwan, damages to the soft base story of the typical RC street houses along street direction often occur after an earthquake hit. This study aims to overcome the impact of seismic retrofitting methods that are applied conventionally in school construction but uneasily in typical street houses. In this study, three specimens were designed for member test, and they are: the nonretrofitted column (C0), the retrofitted column with compression-only connection (CR-C), and moment connection (CR-M). The results showed that the initial stiffness, ultimate strength, toughness, and the energy dissipation of the reinforced specimens in the designed reinforce direction were significantly higher than those of the nonretrofitted column, indicating that the reinforcing measures were effective. The compression-only connection in the three could also achieve the expected reinforcing function. The rigidity and strength of the moment connection reinforced specimen increased in loads applied in both positive and negative directions though attention should be paid to the pullout failure of the beam reinforcing steel anchor.

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