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梁有哪些构造要求
更新时间: 2020-08-19 00:00:00  

梁的构造要求:

1、截面尺寸矩形截面梁的高度比一般取2、0到3、5;T形截面梁的高宽比一般取2、5到4、0;

2、纵向受力钢筋梁中常用的纵向受力钢筋直径为10mm,当梁高h大于300mm时,不应小于10mm根数应不少于两根,分别布置在截面上、下侧的角部以便与箍筋绑扎形成骨架,梁内受力钢筋的直径宜尽可能相同。当采用两种不同直径的钢筋时,则钢筋直径至少宜相差2mm,以便在施工中能用肉眼识别;

3、纵向构造钢筋对于单筋截面梁,在梁的受压区还要布置架立筋,架立筋一般为两根,分别放在截面受压区的角部。架立筋的作用主要是固定箍筋并与截面受拉区的受力纵筋组成钢筋骨架。架立筋的直径与梁的跨度l有关,当梁的跨度小于4m时,架立钢筋直径不宜小于8mm;当梁的跨度为4m到6m时,不宜小于10mm;当梁的跨度大于6m时,不宜小于12mm。

关键词: 哪些 构造 要求

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