弯剪受力下群锚有限元分析  

Finite element analysis of multiple-anchor under combined moment and shear loading

作　　者：王磊[1] 黄为真 谢群[3] 

机构地区：[1]中国汉嘉设计集团股份有限公司山东分公司,山东济南250014 [2]山东省鲁商冰轮建筑设计有限公司,山东济南250101 [3]济南大学土木建筑学院,山东济南250022

出　　处：《四川建筑科学研究》2011年第4期75-78,共4页Sichuan Building Science

摘　　要：采用型钢—混凝土后锚固连接方式,对弯剪受力下粘结型锚栓群的受力性能进行了试验研究和有限元分析。结果表明,该类连接的破坏形态为锚栓钢材破坏,仅锚栓周围混凝土发生锥体破坏,锚栓内力以拉应力为主。锚固承载力随着埋深的增加而提高,加载端至基材表面的水平距离较大时,弯矩起控制作用,承载力较小;水平距离较小时,则表现为弯剪共同作用,承载力较大。The behavior of adhesive anchor group under combined moment and shear loading is studied with both experiment and finite element analysis.Steel-to-concrete connections are used in finite models.The analysis results show that the failure of anchor steel occurs in all models and only slight concrete cone failure appears under ultimate load.Anchor stress is dominated by tension in connections,the strength of connection would be increased by deeper anchor embedment.The capacity of anchorage is controlled by the moment with higher eccentricity of the applied load,while the ultimate load of connections is larger in case of lower eccentricity which the strength is dominated by combination of moment and shear loading.

关 键 词：后锚固 群锚 弯剪受力 有限元 埋深 

分 类 号：TU375[建筑科学—结构工程]