影响密肋复合墙板协同工作的因素

Influencing factor on cooperative work of multi-ribbed composite wall plate

为研究密肋复合墙板协同工作的主要影响因素,建立2种不同规格的密肋复合墙板模型并进行单调加载计算,讨论砌块对结构协同工作受力性能和结构变形的影响.计算表明:在相同的试验条件下,不同规格的密肋复合墙板应力、应变及变形有很大不同.在外部荷载作用下,试件IFH-11主要由框格来承担外力,填充砌块承担的几乎为0,试件IFH-12框格与填充砌块二者共同承担,因而其应力图与密肋复合墙板刚架-斜压杆模型相吻合;试件IFH-11在外力作用下产生变形,框格与填充砌块分离,而试件IFH-12中框格与填充砌块二者接触紧密,具有良好的结构受力与变形性能.

Two different models of multi-ribbed composite wall plate were set up for the case of vertical and horizontal load in order to perform the evaluation of monotonic loading.The influence of masonry unit on the kinetic performance of cooperative work of main factors of multi-ribbed composite wall and its deformation was discussed.The computation showed that stress,strain and deformation in the multi-ribbed composite wall were very different in identical experimental conditions.Under external loads,the framed box of IFH-11 sample mainly undertook the majority of external load and the building bore block almost nothing.The box and block of IFH-12 sample as a whole shared the external load.So its stress diagram was consistent with the model of frame tie with multi-ribbed composite wall plate and oblique compressive rod.IFH-11 deformed under external force and the box and block was separated.In sample IFH-12,the box and block bound together as a compact structure with a fine performance to untake force and deformation.