常用钢筋锚固长度电子教案.doc

常用钢筋锚固长度

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受拉钢筋抗震锚固长度一览表
本工程为二级抗震结构，非特殊环境，常用受拉钢筋锚固长度如下：
钢筋种类
砼等级
钢筋直径
锚固长度
钢筋种类
砼等级
钢筋直径
锚固长度
HRB400
C40
12mm
400.2mm
HRB400
C35
12mm
441.6mm
14mm
466.9mm
14mm
515.2mm
16mm
533.6mm
16mm
588.8mm
18mm
600.3mm
18mm
662.4mm
20mm
667mm
20mm
736mm
22mm
733.7mm
22mm
809.6mm
25mm
833.75mm
25mm
920mm
HRB400
C30
12mm
483mm
HRB400
C25
12mm
552mm
14mm
563.5mm
14mm
644mm
16mm
644mm
16mm
736mm
18mm
724.5mm
18mm
828mm
20mm
805mm
20mm
920mm
22mm
885.5mm
22mm
1012mm
25mm
1006.25mm
25mm
1150mm
HPB300
C40
12mm
345mm
HPB300
C35
12mm
386.4mm
14mm
402.5mm
14mm
450.8mm
16mm
460mm
16mm
515.2mm
18mm
517.5mm
18mm
579.6mm
20mm
575mm
20mm
644mm
22mm
632.5mm
22mm
708.4mm
25mm
718.75mm
25mm
805mm
HPB300
C30
12mm
414mm
HPB300
C25
12mm
469.2mm
14mm
483mm
14mm
547.4mm
16mm
552mm
16mm
625.6mm
18mm
621mm
18mm
703.8mm
20mm
690mm
20mm
782mm
22mm
759mm
22mm
860.2mm
25mm
862.5mm
25mm
977.5mm
注：
1、计算式：LaE=ζaE×ζa× lab (LaE=ζaE×La，La=ζa×lab)
2、其中ζa为受拉钢筋锚固长度修正系数，ζaE为抗震锚固长度修正系数。
3、以上数据仅供参考。
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