國內老舊鋼筋混凝土建築物大多採用非韌性結構設計，由於使用非韌性配筋抵抗地震力，容易呈現受壓崩潰式破壞或該樓層倒塌，故本研究即使用柳杉（Cryptomeria japonica）加工製成的直交集成板（CLT）與竹重組板（Bamboo scrimber board）製成的直交式竹木集成板（Cross-laminated timber-bamboo，CLTB），取代傳統鋼筋混凝土（RC）剪力牆進行舊建築物的耐震補強，探討國內老舊鋼筋混凝土建築物的耐震補強問題。實驗試體包括四組非韌性鋼筋混凝土構架，其中1組為對照組（非韌性無補強之空構架試體），其餘3組分別採用柳杉CLT、CLTB、RC填充於構架內部作為剪力牆以進行耐震補強實驗。由試驗結果顯示，非韌性構架之最大水平剪力為450 kN，最大層間位移角為3%，呈現典型撓剪破壞。採用RC牆補強之最大水平剪力為1350 kN，最大層間位移角為1%，水平剪力強度可提升3倍，但變形能力剩50%。採用CLTB補強之最大水平剪力為1,100 kN，為非韌性RC空構架2.35倍，且最大層間位移角達2.5%，滿足含牆結構2%變形要求。採用柳杉CLT補強之最大水平剪力為1,000 kN、層間位移角高達4%，側力位移曲線之包絡線呈現良好的雙線性行為。因此，柳杉CLT剪力牆、CLTB剪力牆均可提供良好的強度與變形能力，提升既有老舊建築結構之耐震性能。

This study investigates the seismic reinforcement of older reinforced concrete buildings in Taiwan. Many of these buildings were designed with non-ductile structures and non-ductile reinforcements to resist seismic forces, so they are prone to compressive failure or even collapse during earthquakes. Traditional seismic reinforcement methods can often interfere with the everyday functions of the building, making them unsuitable for residential purposes. The study uses domestically produced larch Cryptomeria japonica made cross-laminated timber (CLT) as a retrofit material to address this issue, effectively improving non-ductile structures’ seismic resistance. The experiment includes four non-ductile reinforced concrete frames, with one control group and the other three groups retrofitted by CLT, Cross-laminated timber-bamboo (CLTB), and RC as shear walls. The experimental results show that the maximum horizontal shear force of the non-ductile frame is 450 kN, with a maximum inter-story drift angle of 3%, indicating typical flexural-shear failure. The maximum horizontal shear force of the RC-reinforced frame is 1,350 kN, with a maximum inter-story drift angle of 1%, which increases the horizontal shear strength by three times but leaves 50% of the deformation capacity. The maximum horizontal shear force of the CLTB frame is 1,100 kN, 2.35 times that of the non-ductile RC frame, with a maximum inter-story drift angle of 2.5%, satisfying the 2% deformation requirement for a building with walls. The maximum horizontal shear force of the CLT-reinforced frame is 1,000 kN, with a high inter-story drift angle of 4%, showing good bilinear behavior in lateral force-displacement curves.