箍筋的调整值中,量外包尺寸和量内包尺寸是什么意思?

2025-04-06 21:53:00
推荐回答(2个)
回答(1):

一般钢筋下料按外包尺寸进行,没有内包尺寸,叫内皮尺寸;定义按字面理解就OK了,拿箍筋来理解!
计算方法:直钢筋下料长度=构件长度-保护层厚度+弯钩增加长度
弯起钢筋下料长度=直段长度+斜段长度-弯曲调整值+弯钩增加长度
箍筋下料长度=箍筋周长+箍筋调整值
钢筋弯曲角度 30° 45° 60° 90° 135°
钢筋弯曲调整值0.35d 0.5d 0.85d 2d 2.5d
弯钩增加长度:一般半圆弯钩为6.25d,直弯钩为3.5d,斜弯钩为4.9d
箍筋直径 6 8 10~12
箍筋调整值50 60 70

回答(2):

  一般钢筋下料按外包尺寸进行,没有内包尺寸,叫内皮尺寸,拿箍筋来理解!计算方法:直钢筋下料长度=构件长度-保护层厚度+弯钩增加长度 弯起钢筋下料长度=直段长度+斜段长度-弯曲。
  箍筋:(gujin)hoop;stirrup用来满足斜截面抗剪强度,并联结受力主筋和受压区混筋骨架的钢筋。分单肢箍筋、开口矩形箍筋、封闭矩形箍筋、菱形箍筋、多边形箍筋、井字形箍筋和圆形箍筋等。箍筋应根据计算确定,箍筋的最小直径与梁高h有关,当h≦800mm时,不宜小于6mm;当h>800mm时,不宜小于8mm。梁支座处的箍筋一般从梁边(或墙边)50mm处开始设置。支承在砌体结构上的钢筋混凝土独立梁,在纵向受力钢筋的锚固长度Las范围内应设置不少于两道的箍筋,当梁与混凝土梁或柱整体连接时,支座内可不设置箍筋。

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