上节课的回顾 第3章 砌体结构的设计原则
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Transcript of 上节课的回顾 第3章 砌体结构的设计原则
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3 GB500320011.21.4ABCBB
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4
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1 2 3 4 5
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4.1 4.1.1 H0h
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4-1
A f
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4.1.2
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4-2 4-2
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4-3
E E2643 ,
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4-4 M5 M2.5 0
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4.1.3 [41]
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[41b]
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[41c]
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4-1
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4-5 [fA]
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T4242fA e 1e
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4-2
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y i
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IA
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4-6 4-24-6
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4-64-6f
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4-7
4-24-7 4-7
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4-7
4-8 hT
4-9
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hTThT3.5i 4.1.4 4-3
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30 4-10
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4-3
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(4-11) 4-11
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4-12
4-124-11
4-13
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4-13
4-14
4-44-14
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4-15
4-14
4-16
4-144-154-16ThTh
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4.1.5 4-17 N f 3-3~3-8 A
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e4-134-144-154-24-4 1
MN
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2 4-18 T 4-19
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4-4 H06-5 h hT ThT 3.5 iI
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4-4
1.0
1.0
1.1
1.2
1.5
_1179385296.unknown
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3e0.6yy4-4
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4-4 y
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4 4-5
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4-5
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1490620mmMUl0M2.5H056mNk189.6kN135 kN,54.6 kN : N=1.2180.490.625.6135 1.454.6 =275.18kN
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N=1.35180.490.625.6135 1.054.6 =278.19 kNN278.19 kN 2.2 0.86
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14-3,f=1.30 N/mm2 kN >278.19 kN
- 2 490620mmH05.6mMU10M5.N=160 kN, M=13.55kN.m : 1 mm
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2.1 0.618 A=490620303800mm2 =0.304m2>0.3 m2 14-3 f=1.5N/mm2 kN >160 kN
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2 620mm490mm,.
2.1 0.865
>160 kN
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3 46,H0=7m,MU10(f=2.5N/mm2),Cb20(fc=9.6 N/mm2),=35%,33%.N=155kN,M=22.44 kN.m,
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46 3mm
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1 A2200240370380 668600mm2=0.67m2>0.3m2
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2
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2.2 0.2764
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>155 kN
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1
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2 0.6yy
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4.3 [4-9a]
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[4-9b]
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4-9
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4.3.1 1.
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(1) 4-10(a)23
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(2) [4-9b] [4-10c]
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4-10
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2.
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4-11ab4-11a
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23234-11b0
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4-11
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3. 4-27
427
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A 4-12 Al
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(4-27)AAlA/AlA/Al
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A/Al4-27 4-12a 2.54-12b 2.04-12c 1.54-12d 1.254-12abc 1.5 1.0
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4-12
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hh1abcAlhc=h 4. 4-28 4-28
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: Nl Al f
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4.3.2 [4-13a]
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[4-13b]4-28
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4-13
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1.a0 a0Ala0bba0aa4-14
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4-14
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KN/mm3, a0tan K a0tan 4-14 4-29
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Nt= Ka0tan a0b K/f0.7mm-1qNt= tan Bc=0.3EcIc4-29a0
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a0 a0 >a a0 =amm hc mm MPa
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2. NtN0 N0= Al
- 4-15, A0 /AlA0 /Al 2A0 /Al
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4-15
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4-16 , 0.435
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>0.435 4-31 0 N0
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Al
4-30 Nl
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0.7 1.0 4-27
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4.3.3 tb 180bb b+2tbctb4-17120
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4-17
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0.8
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(4-32)N0Ab NI; NI 0.4a0 N0NI2 , =0.8 1.0
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Ab A0 4-2 ~ 4-3ha b;eN0Nte4-33
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(4-33) 4-34
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4-5 4-5
0
0.2
0.4
0.6
0.8
5.4
5.7
6.0
6.9
7.8
_1115746893.unknown
_1115747101.unknown
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4.3.4 (4-18)
4-18
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4-334-34(N0+Nt)e4-32
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4.3.5
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h, 4-19a
4-35
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E h
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4-19
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Nl[4-19b]
h0
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4-36)
h0
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4-19b4-19cs
4-37)
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1.51.5
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4-38) 4-39)
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31.5
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4-40 [4-39 ] 1.0 0.8 [4-36]
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4bh=250mm600mm,l0=6.5m,1510Nu=245 kN,Nl=110kNMU10M5 ab=370mm,bb=490mm,tb=180mm
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420 4
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Ab=abbb=370490181300mm2 A0=490740362600mm2
/f=0.54/1.5=0.36,2-1 5.94
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2.1 3 =0.747
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4.4 4.4.1 (211) 4-41
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421
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4.4.2
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1 4-42 M W
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2 4-43 V b z(zIS, z=2H3);
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I S H 4.4.3
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: (4-44): V A ; ;
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0.60 0.64 0.64 0.66
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f 0.8
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5422V=15kN,(12 kN),1-1Nk=20kN;370mm,490mm,MU10M5 11
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422
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MU10M5f=1.5 N/mm2, fv=0.11N/mm2
>V=1.231.41220.4kN ,
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2
fv=0.11N/mm2
>V=1.3531.01216.05kN ,
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4.5 1
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e/h 414 1.0416
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2 0.6yy
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3
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4
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5
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6 7