周边锚块压力对大吨位混凝土锚固区锚下应力分布的影响  

Influence of pressure of adjacent anchor on stress distribution in concrete anchorage zone under large load

作　　者：游经团[1] 房贞政[1] 

机构地区：[1]福州大学土木工程学院,福建福州350108

出　　处：《延边大学学报（自然科学版）》2013年第2期138-143,共6页Journal of Yanbian University（Natural Science Edition）

摘　　要：应用大型空间有限元软件ABAQUS对大吨位混凝土单锚和群锚锚固区模型及群锚模型中6种索孔加荷工况进行分析,探讨单锚和群锚锚固区的应力分布规律及其异同,并考察周边索孔压力对锚固区应力分布的影响.结果表明:与单锚相比,群锚锚固区仍存在碎落应力区,但除最外侧索孔外,锚下的崩裂应力区不明显;在群锚锚下的一定深度范围内,其压应力出现中部大、周边小的现象;在一定索孔间距下,可以不考虑相邻索孔压力的影响.The difference of stress distribution between concrete anchorage zone（AZ） with single anchor（SA） and several anchors（SAS）,and the influence of pressure of adjacent anchor in SAS is studied in this paper using the soft ABAQUS.The results indicate that compared with SA the breaking stress zone remain in AZ with SAS,but the crack stress zone is not obvious except for the outer hole;the pressure stress is bigger in the mid than in the rim of AZ with SAS;the influence of the pressure of adjacent anchor can be disregardful with the certain space of the anchor holes.

关 键 词：锚固区 局部应力 单锚 群锚 

分 类 号：TU997[建筑科学—市政工程]