碳纤维布加固梁柱式胶合木结构抗侧性能试验

Experimental Study on Lateral Resistance of Timber Post and Beam Structures Strengthened with Carbon Fiber Reinforced Polymer

摘要:

为研究震损梁柱式胶合木结构在节点外包碳纤维布加固后的抗侧力性能，对3榀单层单跨梁柱式木框架足尺试件进行了低周反复加载试验.试验首先通过低周反复加载模拟框架结构的地震损伤，其后用碳纤维布进行节点加固，并进行与前期相同的低周反复加载试验.结果表明，碳纤维布加固方法可以有效抑制裂缝开展，恢复受损结构的强度、刚度、延性等抗侧力性能，改善耗能能力.

Abstract:

In order to study the lateral resistance of glued laminated timber post and beam structures strengthened with carbon fiber reinforced polymer, cyclic tests on three full scale one storey, one bay timber post and beam construction specimens were carried out. The experimental program includes cyclic test, retrofitted by carbon fiber reinforced polymer (CFRP) at the end of post and beam and retest of using the same protocol of cyclic loading. The test result shows that the CFRP retrofitting approach can restrain the development of crack, recover the lateral resistance such as strength, stiffness and ductility of the damaged structures and improve energy dissipation capacity.