1.相关梁钢筋计算公式
1)楼层框架梁上下贯通筋长度=伸入左端支座内长度+通跨净长+伸入右端支座内长度+搭接长度×搭接个数
2)第一排端支座负筋长度=伸入端支座内长度+伸入首(尾)跨内长度
3)第一排中间支座负筋长度=伸入中间支座左跨长度+中间支座宽+伸入中间支座右跨长度
4)第二排端支座负筋长度=伸入端支座内长度+伸入首(尾)跨内长度
5)第二排中间支座负筋长度=伸入中间支座左跨长度+中间支座宽+伸入中间支座右跨长度
6)下部端跨非贯通筋长度=伸入端支座内长度+首(尾)跨净长度+伸入中间支座内长度
7)下部中间跨非贯通筋长度=伸入中支座1内长度+中间跨净长度+伸入中间支座2内长度
8)侧面构造纵筋长度=伸入左端支座内长度+通跨净长+伸入右端支座内长度+搭接长度×搭接个数
9)箍筋根数=箍筋布置范围/箍筋间距+1或-1或+0(取整数)
10)箍筋长度计算同柱
11)拉筋长度=(b-2c+2d1+2d2)+1.9×2d+max(10d,75)×2式中,b为箍筋截面宽;c为框架梁的保护层厚度,d1为箍筋直径,d2为拉筋直径,max表示取大值
12)拉筋根数=[(净跨长度-50×2)/(非加密区间距×2)+1]×拉筋的排数
13)吊筋长度=b+50×2+(hb-2c)/sin45°×2+20d×2 (当梁高hb≤800时,吊筋斜度为45°)式中b为次梁的宽度,hb为框架梁的高度,c为框架梁的保护层厚度,d为吊筋直径
2.一层顶梁钢筋工程量计算
KL1(2);2个
1)梁顶贯通筋220长度=[(柱宽-保护层+15d)×2+L净][(0.4-0.025+15×0.02)×2+9.5-0.22×2]×2m=20.82m
2)第一排左端支座负筋120长度=[(0.4-0.025+15×0.02)+1/3(5.6-0.22-0.2)]m=2.401m
3)第一排右端支座负筋120长度=[(0.4-0.025+15×0.02)+1/3(3.9-0.22-0.2)]m=1.835m
4)第一排中间支座负筋116长度=[1/3(5.6-0.22-0.2)+0.4+1/3(5.6-0.22-0.2)]m=3.85m
5)下部左端跨非贯通筋318长度=[(0.4-0.025+15×0.018)+(5.6-0.22-0.2)+31×0.018]×3m=19.149m
6)下部右端跨非贯通筋318长度=[(0.4-0.025+15×0.018)+(3.9-0.22-0.2)+31×0.018]×3m=14.049m
7)框架梁箍筋的计算:
①单根箍筋长度=(b+h)×2-8c+8d+1.9d×2+max(10d,75)×2=[(0.29+0.55)×2-8×0.025+8×0.008+1.9×0.008×2+10×0.008×2]m=1.734m
②框架梁KL1(2)箍筋根数={[(1.5×0.55-0.05)/0.1+1]×4+(5.6-0.22-0.2-1.5×0.55×2)/0.2-1+(3.9-0.22-0.2-1.5×0.55×2)/0.2-1}根=(36+17+8)根=61根
框架梁KL1(2)箍筋总长度=1.734m/根×61根=105.77m
框架梁KL1(2)小计:20 (20.82+2.401+1.835)×2m=50.112m
16 3.85m×2m=7.7m
18 (19.149+14.049)×2m=66.396m
箍筋8 105.77×2m=211.55m
KL2(2);2个
1)梁顶贯通筋418长度=[(柱宽-保护层+15d)×2+L净]=[(0.4-0.025+15×0.018)×2+9.5+3.9-0.22×2]×4m=57m
2)梁底贯通筋318长度=[(0.4-0.025+15×0.018)×2+9.5+3.9-0.22×2]×3m=42.75m
3)框架梁箍筋的计算:
①单根箍筋长度=(b+h)×2-8c+8d+1.9d×2+max(10d,75)×2=[(0.3+0.5)×2-8×0.025+8×0.008+1.9×0.008×2+10×0.008×2]m=1.654m
②框架梁KL2(2)箍筋根数={[(1.5×0.5-0.05)/0.1+1]×4+(5.6-0.22-0.2-1.5×0.5×2)/0.2-1+(3.9-0.22-0.2-1.5×0.5×2)/0.2-1}根=(32+18+19)根=69根
框架梁KL2(2)箍筋总长度=1.654m/根×[69根+12根(附加箍筋)]=133.97m
框架梁KL2(2)小计: 18 (57+42.75)×2m=199.5m
箍筋8 133.97×2m=267.95m
KL4(3);1个
1)梁顶贯通筋220长度=[(柱宽-保护层+15d)×2+L净]=[(0.4-0.025+15×0.02)×2+17.5-0.22×2]×2m=28.82m
2)第一排左端支座负筋125长度=[(0.4-0.025+15×0.025)+1/3(6.0-0.22-0.2)]m=2.61m
3)第一排右端支座负筋125长度=[(0.4-0.025+15×0.025)+1/3(6.0-0.22-0.2)]m=2.61m
4)第一排中间支座负筋2×220长度=[1/3(6.0-0.22-0.2)+0.4+1/3(6.0-0.22-0.2)]×2×2m=16.48m
5)下部左端跨非贯通筋420长度=[(0.4-0.025+15×0.02)+(6.0-0.22-0.2)+31×0.02]×4m=27.5m
6)下部中间跨非贯通筋322长度=[(5.5-0.22-0.2)+31×0.022×2]×3m=19.33m
7)下部右端跨非贯通筋420长度=[(0.4-0.025+15×0.02)+(6.0-0.22-0.2)+31×0.02]×4m=27.5m
8)框架梁箍筋的计算:
①单根箍筋长度=(b+h)×2-8c+8d+1.9d×2+max(10d,75)×2=[(0.29+0.55)×2-8×0.025+8×0.008+1.9×0.008×2+10×0.008×2]m=1.734m
②框架梁KL4(3)箍筋根数={[(1.5×0.55-0.05)/0.1+1]×6+[(6.0-0.22-0.2-1.5×0.55×2)/0.15-1]×2+(5.5-0.2×2-1.5×0.55×2)/0.15-1}根=(54+52+22)根=128根
框架梁KL4(3)箍筋总长度=1.734m/根×[128根+18根(附加箍筋)]=253.16m
框架梁KL4(3)小计:20 (20.82+27.5×2+16.48)m=92.3m
25 2.61m×2=5.22m
22 19.33m(www.xing528.com)
箍筋8 253.16m
KL5(3);1个
1)梁顶贯通筋220长度=[(柱宽-保护层+15d)×2+L净]=[(0.4-0.025+15×0.02)×2+17.5-0.22×2]×2m=28.82m
2)第一排左端支座负筋222长度=[(0.4-0.025+15×0.022)+1/3(6.0-0.22-0.2)]×2m=5.13m
3)第一排右端支座负筋222长度=[(0.4-0.025+15×0.022)+1/3(6.0-0.22-0.2)]×2m=5.13m
4)第一排中间支座负筋225长度=[1/3(6.0-0.22-0.2)+0.4+1/3(6.0-0.22-0.2)]×2m=8.24m
第一排中间支座负筋220长度=[1/3(6.0-0.22-0.2)+0.4+1/3(6.0-0.22-0.2)]×2m=8.24m
第二排中间支座负筋220长度=[1/4(6.0-0.22-0.2)+0.4+1/4(6.0-0.22-0.2)]×2m=3.19m
5)下部左端跨非贯通筋425长度=[(0.4-0.025+15×0.025)+(6.0-0.22-0.2)+31×0.025]×4m=28.42m
6)下部中间跨非贯通筋425长度=[(5.5-0.2-0.2)+31×0.025×2]×4m=26.6m
7)下部右端跨非贯通筋525长度=[(0.4-0.025+15×0.025)+(6.0-0.22-0.2)+31×0.025]×5m=35.53m
8)框架梁箍筋的计算:
单根箍筋长度=(b+h)×2-8c+8d+1.9d×2+max(10d,75)×2=[(0.3+0.5)×2-8×0.025+8×0.008+1.9×0.008×2+10×0.008×2]m=1.654m
框架梁KL5(3)箍筋根数={[(1.5×0.5-0.05)/0.1+1]×6+[(6.0-0.22-0.2-1.5×0.5×2)/0.15-1]×2+(5.5-0.2×2-1.5×0.5×2)/0.15-1}根=(48+54+23)根=125根
框架梁KL5(3)箍筋总长度=1.654m/根×[125根+18根(附加箍筋)]=236.52m
9)吊筋612长度=[b+0.05×2+(hb-2c)/sin45°×2+20d×2]×6=[0.3+0.05×2+(0.5-2×0.025)/0.707×2+20×0.012×2]×6m=12.92m
框架梁KL5(3)小计:20(28.82+8.24+3.19)m=40.25m
22(5.13×2)m=10.26m
25(8.24+28.42+26.6+35.53)m=98.79m
箍筋8 236.52m
吊筋12 12.92m
梁L1(2):一个
1)梁顶贯通筋225长度=[(柱宽-保护层+15d)×2+L净]=[(0.4-0.025+15×0.025)×2+9.5-0.22×2]×2m=21.12m
2)第一排中间支座负筋125长度=[1/3(5.6-0.22-0.2)+0.4+1/3(5.6-0.22-0.2)]m=3.85m
3)下部左端跨非贯通筋325长度=[(5.6-0.22-0.2)+12×0.025×2]×3m=17.34m
4)下部右端跨非贯通筋218长度=[(3.9-0.22-0.2)+12×0.018×2]×2m=7.824m
5)梁L1(2)箍筋的计算:
①单根箍筋长度=(b+h)×2-8c+8d+1.9d×2+max(10d,75)×2=[(0.25+0.4)×2-8×0.025+8×0.008+1.9×0.008×2+10×0.008×2]m=1.354m
②梁L1(2)箍筋根数=[(9.5-0.22×2-0.05×2)/0.2+1]根=46根
梁L1(2)箍筋总长度=1.354m/根×46根=62.284m
梁L1(2)小计:18 7.824m
25 (21.12+17.34+3.85)m=42.31m
箍筋8 62.2m
梁L4(1):一个
1)梁顶贯通筋212长度=[12×0.012×2+(2.7-0.15-0.125)]×2m=5.426m
2)梁下部贯通筋220长度=[(2.7-0.15-0.125)+12×0.02×2]×2m=5.81m
3)梁L4(1)箍筋的计算:
①单根箍筋长度=(b+h)×2-8c+8d+1.9d×2+max(10d,75)×2=[(0.25+0.35)×2-8×0.025+8×0.008+1.9×0.008×2+10×0.008×2]m=1.254m
②梁L4(1)箍筋根数=[(2.7-0.15-0.125)/0.2+1]根=14根
梁L4(1)箍筋总长度=1.254m/根×14根=17.56m
梁L4(1)小计:12 5.426m
20 5.81m
箍筋8 17.56m
以上梁钢筋合计: 25 (5.22+98.79+42.31)m=146.32m,折合0.564t
22 (19.33+10.26)m=29.59m,折合0.088t
20 (50.112+92.3+40.25+5.81)m=188.47m,折合0.465t
16 7.7m,折合0.012t
18 (66.396+199.5+5.912)m=271.81m,折合0.543t
箍筋8 (211.55+267.95+253.16+236.52+62.2+17.56)m=
1048.94m,折合0.414t
吊筋12 12.92m+5.426m,折合0.016t
其余梁钢筋工程量算法同,这里略。
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