作　　者： (胡亚风）; (魏洋）; (王彤）; (赵龙龙）;

机构地区： 南京林业大学土木工程学院,南京210037

出　　处： 《实验室研究与探索》 2017年第8期34-39,共6页

摘　　要： 为研究螺栓连接件连接的木-轻集料混凝土试件抵抗推出剪切的能力,设计了32组96个螺栓连接件连接的木-轻集料混凝土试件,采用电液伺服万能试验机及TDS数据采集仪等设备进行了静载推出试验。结果表明:螺栓型剪力连接件的螺栓多于2根后,剪切破坏模式属于脆性破坏;螺栓根数相同时,LC20等级的轻集料混凝土连接件推出变形延性系数大;考虑试件极限位移、极限承载力性能,使用2根ф8 mm或ф10 mm直径的螺栓及LC30等级的轻集料混凝土时,综合性能最佳。试验成果对木材与轻集料混凝土复合结构的设计、应用等提供一定的参考价值。 In order to study the shear effect of wood-lightweight aggregate concrete specimens connected by bolt keys,static load tests were carried out on 96 sets of 32 types wood-lightweight aggregate concrete shear connectors with electrohydraulic servo universal tester and TDS data collecting machine. The test results showed when two more bolts were used,shear failure mode of the connectors,belongs to brittle failure; if the bolts were arranged equally,the ductility coefficient of the low intensity of lightweight aggregate concrete LC20 increases and fits out deformation. Considering specimen limit displacement and applying bearing capacities of comprehensive performance,we could get the best performance by the using two of ф8 or ф10 type bolts and the intensity of lightweight aggregate concrete is 30 MPa. The results of the study provide reference values for the design and application of wood and lightweight aggregate concrete composite structure.

关 键 词： 螺栓连接件 木材 轻集料混凝土 复合连接件 荷载 滑移关系