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第四章 钢筋混凝土工程 PowerPoint PPT Presentation


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第四章 钢筋混凝土工程. 第二节 钢 筋 工 程. 钢筋的种类及性能 1 、按 化学成分 : 1 )碳素钢筋 低碳钢钢筋 ( 含碳量  0.25 ) , 中碳钢钢筋 ( 含碳量为 0.25 %  0.6 ) , 高碳钢钢筋 ( 含碳量大于 0.6 % ) 2) 普通低合金(合金元素 <5% ) 2 、按轧制外形分:光圆钢筋 变形钢筋--螺纹、月牙纹 3 、按作用分:受拉(压)钢筋、架立钢筋、分布钢 筋、箍筋、吊筋、腰筋、构造筋、锚固筋等.

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第四章 钢筋混凝土工程

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1:

1

(0.25)

(0.250.6)

(0.6)

2)<5%

2

3


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4

l

b

kj

5610mm

12mm

612m

6(35mm)(

610mm)(1220mm)

(20mm)

7


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1

2


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3

(1)

(2)20cm

(3)


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4-20


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  • 1


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2

4


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3


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2

1- 2- 3- 4-

5- 6- 7-8- 9-

10- 11- 12- 13-4-21


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6 8

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2

0.20.3m/s

4-23


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1

2


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10mm

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41


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4-29

1-2-3-4-5-6- 4-28


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4-30


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4


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5

-

16-40mmHPB235HRB3357mm


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1-2-3-4-5-6-7-8-9-

4-31


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  • 1

  • 1840mm5mm


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4-32

4-33


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2

4-34


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3

4-35


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  • HPB235HRB40016409mm


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35d(d)500mm


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50


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1


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2

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3

4-36


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4-38()


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(mm)


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20L14-39mm

4-39 L1


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(5500+2200-225)-2220+26.2520=6020(mm)

5500-225+26.2510=5575(mm)

240+50+500-25=765(mm)

(550-225)1.414=707(mm)

5500-2(240+50+500+500)=2920(mm)

(765+707)2+2920-40.520+26.2520

=6074(mm)


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240+50-25=265(mm)

(550-225)1.414=707(mm)

5500-2(240+50+500)=3920(mm)

(765+707)2+3920-40.520

+26.2520=6074(mm)

200-225+26=162(mm)

550-225+26=512(mm)

(162+512)2+50=1398(mm)

5500-250/200 +1=28


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1

(1)


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fy2AS2d2,

n2


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25mm100mm50mm


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3

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b.50

c.50


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12mm35

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2

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3

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1

12m

2

3

2


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3

1

2

3


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4 36V


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