1.上海市建筑科学研究院有限公司,上海 200032
2.上海市工程结构安全重点实验室,上海 200032
张富文(1982—),男,正高级工程师,博士。主要从事工程抗震与加固改造研究。E-mail:zhangfuwen@sribs.com
蒋利学(1971—),男,教授级高级工程师,硕士。主要从事既有结构鉴定加固与高层建筑结构研究。E-mail:jianglx1971@163.com
纸质出版:2021-12-15
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张富文,王卓琳,蒋利学.内嵌砖墙穿斗木构架抗震性能试验研究[J].防灾减灾工程学报,2021,41(06):1202-1211.
ZHANG Fuwen,WANG Zhuolin,JIANG Lixue.Experimental Study on Seismic Behavior of Traditional Chuan⁃dou Style Wood Frame with Embedded Brick Wall[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(06):1202-1211.
张富文,王卓琳,蒋利学.内嵌砖墙穿斗木构架抗震性能试验研究[J].防灾减灾工程学报,2021,41(06):1202-1211. DOI: 10.13409/j.cnki.jdpme.201908073.
ZHANG Fuwen,WANG Zhuolin,JIANG Lixue.Experimental Study on Seismic Behavior of Traditional Chuan⁃dou Style Wood Frame with Embedded Brick Wall[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(06):1202-1211. DOI: 10.13409/j.cnki.jdpme.201908073.
设计制作了1榀足尺的穿斗木构架和2榀足尺的内嵌砖墙穿斗木构架,通过拟静力对比试验研究了构架的破坏形态、破坏机理、水平承载力、变形性能、刚度退化和耗能性能。结果表明:对比木构架未发生明显的水平滑移,整体变形能力较强;内嵌砖墙木构架在加载过程中发生了砖墙的弯曲摇摆破坏,并最终导致了平面外坍塌。对比木构架的滞回曲线呈典型的反S形,滞回环中部捏拢明显;内嵌砖墙木构架的滞回曲线为梭形,滞回环饱满。与对比木构架相比,内嵌砖墙木构架的初始刚度、水平承载力和耗能能力大幅提升,但极限变形能力显著降低。穿斗木构架的梁柱节点为典型的半刚接节点,转动刚度随转角的增大而逐渐减小;而由于砖墙的嵌固作用,内嵌砖墙木构架中的梁柱节点在墙体倒塌前未发生明显的转角。
One full-scaled traditional Chuan-Dou style wood frame and two full-scaled wood frames with embedded brick wall were designed and prepared. Quasi-static tests were conducted on these models to study their failure pattern, failure mechanism, shear capacity, deformation performance, stiffness degradation and energy dissipation performance. Results showed that the horizontal slide of the control pure wood frame was not obvious and the frame exhibited relatively large deformation capacity, while for the wood frame filled with brick wall, flexural rocking failure of the brick walls was observed during the loading process and finally the out-of-plane collapse occurred. The hysteresis curve of the pure wood frame was in typically inverse S-shaped and central clamping of the hysteresis ring was obvious, while the hysteresis curve of the wood frame filled with brick wall was spindle-shaped, and the hysteresis ring was full. Compared with pure wood frame, the initial stiffness, shear capacity, ductility factor and energy dispassion capacity of the studied frame greatly increased, while the ultimate performance capacity obviously decreased. The beam-column joints in the Chuan-Dou style wood frame were typically semi-rigid joints, with the rotational stiffness decreased with the increasing rotational degree. Due to the anchoring of the brick walls, the rotation of the mortise-tenon joints in the wood frame was not obvious before the failure of the specimens.
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