林业工程学报2017，Vol.2Issue(2)：145-151,7.DOI:10.13360/j.issn.2096-1359.2017.02.024
混合结构对正交胶合木剪力墙抗侧性能的影响
Effect of hybrid structure on lateral load resistance of cross-laminated timber shear wall
摘要
Abstract
Compared with other engineering wood products, such as laminated strand lumber ( LSL) , laminated veneer lumber (LVL) and structural plywood, cross-laminated timber (CLT) demonstrates a great potential in serving as crucial elements in the construction of buildings made entirely from timber. Hybrid CLT ( HCLT) shear wall was fab-ricated by using lumber and/or LVL in this study. Two groups of CLT and HCLT shear walls were tested under mono-tonic and cyclic loads, respectively. Failure modes and load-displacement curves of CLT/HCLT shear walls were ob-tained and the yield load, ultimate load, elastic lateral stiffness and ductility of those shear walls were obtained through the calculation. The effects of different layer materials of CLT on the lateral load capacity were also analyzed. The results showed that the prime failure mode of CLT shear walls under the monotonic load was the failure of hold-down connection and bracket connection, however, the prime failure mode of CLT shear walls under cyclic loads was the failure of hold-down connection and nails connection failure. The dissipated energy of CLT shear walls were resul-ted from the deformations of hold-down and brackets connections and the deformations, pulling-out and fracture of nails under cyclic loads. Compared with normal CLT shear walls, the ultimate displacement and shear strength of HCLT shear walls under monotonic and cyclic loads were 3. 03%, 24. 75%, 7. 33% and 3. 31% lower than those of normal CLT shear walls, respectively. However, the elastic lateral stiffness of HCLT shear walls under monotonic and cyclic loads were 8.70% and 7.45% higher than those of normal CLT shear walls, respectively. It was concluded that the connection properties of hold-down and/or brackets between CLT walls and foundation need to be improved. The further research in this field is needed to improve the connection properties of CLT shear walls.关键词
正交胶合木/混合结构/木剪力墙/抗侧力性能Key words
cross-laminated timber/hybrid layer/wooden shear wall/lateral load capacity分类
农业科技引用本文复制引用
王志强,罗冬,郑维,姚悦,卢晓宁..混合结构对正交胶合木剪力墙抗侧性能的影响[J].林业工程学报,2017,2(2):145-151,7.基金项目
国家自然科学基金(31570559) （31570559）
2014年江苏省产学研联合创新项目(BY2014006-05). （BY2014006-05）
