The findings above confirm that there exsists three transfer mecha - nisms in the joint , that is , the truss mechanism , the diagonal strut mechanism , and the confinement mechanism 以上结果确认了节点中存在三种传力机构,即桁架机构、斜压杆机构和约束机构。
In the way , a convincing expression is prsented to force transfer mechanism in the joint core . the findings shew that in different stages , the horizontal forces transfered into the joint are by the truss and the diagonal strut mechanisms are different 本文研究表明,在不同受力阶段,传人节点区的水平作用剪力由流架机构和斜压杆机构承担的比例是不同的,约束机构发挥的作用也有所不同。
The creative results are as follows : ( 1 ) behavior of the stirrup legs in the loading direction in the joint core ( along the loading direction for circular stirrups ) is different from that perpendicular to the loading direction . the stirrup legs in the loading direction acts as the tension chords in the truss model to resist shear , in the meantime , they confine the compressed diagonal strut from lateral expam - sion 沿受力方向箍肢(或部位)既作为桁架机构的拉杆参与抗剪又对斜压杆受压后沿受力平面侧向膨胀的水平分量起约束作用;垂直受力方向箍肢(或部位)原则上仅对斜压杆沿垂直受力方向侧向膨胀起约束作用。
But this time , the authors considered more factors that can influence the precise , which include plastic resistant moment of special - shaped columns , bending stiffness of beams and cracking of walls . then , the equivalent width of diagonal strut is worked out . based on above results , the bar system model is used to calculating the internal force of the structure and the results were match the testing data basically 给出结构的简化计算方法,本文利用砌块墙体的斜压杆等效原理,并考虑了异形柱的塑性抵抗矩、 0梁的抗弯能力以及马牙搓连接等多种因素,解出了斜压杆的等效宽度,在此基础上按杆系模型对结构进行了简化静力验算,结果与试验基本相符。
Numerical value analyses are done with ratio 1 : 3 building model . in addition , for practical analysis and calculation the wall is considered as equivalent compressive diagonal strut and equivalent concrete wall , and space frame - compressive diagonal strut computational finite element model and space frame - concrete wall computational finite element model are given in this thesis 此外,为建立便于实用的数值分析方法,论文中还分别将密肋复合墙板简化为等效斜压杆和等效混凝土墙体,分别建立空间框架? ?斜压杆有限元分析模型和空间框架? ?混凝土墙体有限元分析模型。
Behavior of the confinement mechamsm is also different . before obvious bond deterioration of the beam rebars passing through the joint core occurs , the shear is mainly transfered by the truss mechansim . when the bond deterioration occurs comprehensively , the shear transfered by the truss mechamism is reduced significantly , the majority of the shear is transfered by the diagonal strut 当贯穿节点的梁筋未出现明显的粘结退化之前,节点作用剪力主要通过街架机构传递,斜压杆机构传递的剪力和约束机构发挥的作用较小;当梁筋全面出现粘结退化以后,行架机构传递的剪力明显降低,作用剪力主要由斜压杆机构传递。