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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


4

l

b

kj

5610mm

12mm

612m

6(35mm)(

610mm)(1220mm)

(20mm)

7


1

2


3

(1)

(2)20cm

(3)


4-20



  • 1

  • 1



2

4



3


2

1- 2- 3- 4-

5- 6- 7-8- 9-

10- 11- 12- 13-4-21


1

6 8

4-22


2

0.20.3m/s

4-23


3

1

2


10mm

10mm

1


4-24


2

41


3

4-25GQ40


4-26



()

GW40

4-27 GW40



1

UN1 75


4-29

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


2


3


4-30


4


5

-

16-40mmHPB235HRB3357mm


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

4-31


  • 1

  • 1840mm5mm



4-32

4-33


2

4-34


3

4-35


  • HPB235HRB40016409mm


35d(d)500mm


50 50

50



=+

1


2

180

90135

6.25d

1d+

3d +


3

4-36



4


4-37


4-38()


(mm)


20L14-39mm

4-39 L1


(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)


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)


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fy2AS2d2,

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2

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3

4

55%2%

6


1

2022

2212mm


4-40


1

2

0.25

5100mm


5100mm 10200mm

25mm100mm50mm


3

4

10


1.3llll

a.25

b.50

c.50


l

4-41


12mm35

0.7

(5)



6

7


4-42


2

1m6m


1

2

3

4

5



1

12m

2

3

2


3

1

2

3


4 36V




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