底缝配筋对砌体墙垂直方向剪切作用影响的试验研究

EXPERIMENTAL STUDY ON VERTICAL SHEAR MASONRY WALLS WITH BOTTOM JOINT REINFORCEMENT

通常无配筋砖石建筑的加劲墙会受到不均匀沉降的影响,无配筋结构易开裂,影响建筑的使用。因此,使用底缝配筋的加固方法,分析砖石建筑在砌筑墙时布置横向墙拉钢筋的力学性能,对无配筋砌体墙和加筋砌体墙的垂直剪切进行对比,确定了底缝钢筋对砌体墙受力性能、承载能力、破坏模式和刚度的影响。结果表明使用底缝钢筋对砌体墙的力学性能有积极影响,能够显著降低不均匀沉降使砌体产生裂缝宽度的大小。

In general,the stiffened walls of masonry buildings,which are constructed without reinforcement,are often affected by uneven settlement,and the structure without reinforcement is prone to cracking,which affects the use of houses.Therefore,it is necessary to find a way to improve the mechanical properties of this masonry building.In this paper,the reinforcement method of bottom joint reinforcement is used to analyze the mechanical properties of transverse wall tensile reinforcement in masonry buildings,and a preliminary comparative test on the vertical shear strength of unreinforced masonry wall and reinforced masonry wall was carried out in Beijing Engineering Co.,Ltd.to find the effects of bottom joint reinforcement on the bearing capacity,failure mode and stiffness of masonry are determined.The use of this type of bottom joint reinforcement has a positive impact on the mechanical properties of the masonry,and it can significantly reduce the uneven settlement of the masonry cracks caused by the size of the width.