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一、误把圈梁配筋当作过梁配筋 《砌体结构设计规范》(GBJ3—88)规定,圈梁兼作过梁时,过梁部分的钢筋应按计算用量单独配置。显然,把圈梁钢筋当作过梁钢筋使用是错误的。 二、钢筋搭接长度不够 圈梁钢筋绑扎时。一些施工人员多按底部纵筋受拉、上部纵筋受压来确定钢筋搭接长度。根据《砌体结构设计规范》(GBJ3—88)规定,圈梁纵向钢筋绑扎接头的搭接长度按受拉钢筋考虑。显然圈梁钢筋的搭接长度不存在受拉与受压之分。
First, misuse the ring beam reinforcement as a rib reinforcement “Matrix structure design specification” (GBJ3-88) provides that when the ring beam doubles as a beam, the lintel part of the reinforcement should be configured separately. Obviously, it is wrong to use ring beam reinforcement as a rib reinforcement. Second, the lap length of the steel bar is not enough. Some construction workers mostly rely on the tension of the bottom longitudinal bar and the compression of the upper longitudinal bar to determine the length of the reinforcement lap. According to the “Code for Design of Masonry Structures” (GBJ 3-88), the lap length of longitudinal steel bar binding joints for ring beams is taken into consideration in terms of tensile reinforcement. Obviously, there is no difference between pull and compression in the overlap length of ring beam reinforcement.