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一、前言 多层砖房抗震加固工程中,用钢筋网水泥砂浆加固砖墙(俗称夹板墙)时,人们普遍认为水平钢筋和垂直钢筋在墙体开裂前后对提高墙体的抗剪能力方面的作用是一样的。因此,钢筋网片的布置大多喜欢用方格,即横竖方向的配筋间距相等。许多资料也是如此建议的。例如《民用建筑抗震加固图集》就建议用φ6@250～300正方格布筋;即或不用正方格布筋,也在所推荐的公式中,以水平钢筋与垂直钢筋同等作用的观点出发
I. INTRODUCTION In the seismic strengthening of multi-story brick buildings, when reinforced brick walls (commonly known as plywood walls) are reinforced with steel mesh mortar, it is generally accepted that horizontal and vertical steel reinforcements can improve the shear resistance of walls before and after wall cracking. The effect is the same. Therefore, most of the arrangement of reinforcing mesh is like using squares, that is, the spacing of reinforcing bars in the horizontal and vertical directions is equal. Many sources are also suggested. For example, the “Atlas of Earthquake Resistance of Civil Buildings” proposes to use φ6@250～300 square grid reinforcement; that is, or without square grid reinforcement, and also in the proposed formula, the role of horizontal reinforcement and vertical reinforcement is equivalent set off