5341400- Suv ta`minoti va kanalizatsiya tizimlarini loyihalashtirish va ekspluatatsiyasi bakalavriat ta’lim yo‘nalishi uchun hisoblash grafik ishlariga topshiriq variantlari
1-topshiriq: Tekis kesim yuzalarning geometrik xarakteristikalari.
2-topshiriq: Cho‘zilish va siqilishda statik noaniq masalalar
3-topshiriq: Balkalarda (M) va(Q) epyuralarini kurish.
Balkalarni egilishga hisoblash
4-topshirik: Vallarni buralish bilan egilishga xisoblash
TOPShIRIK – 1.
TEKIS KESIM YuZALARINING GEOMETRIK XARAKTERISTIKALARI.
Prokat profillardan yasalgan yigma nosimmetrik kesimlar uchun 1)shaklning og‘irlik markazi koordinatalarini toping, 2) bosh markaziy inersiya uklari vaziyatini aniklang, 3) analitik va grafik usullarda (Mor doirasini yasab) kesimining bosh inersiya momentlari aniklang. Kesimlarining shakllari va mm dagi ulchamlari jadvaldagi rasmlarda keltirilgan. Kesimni M1:1 yoki M1::2 masshtabda chizing
javob: Jadvalga qarang (raqamlar yaxlitlangan)
Sxema
nomeri
|
Kesim sxemasi
|
variant
|
Kesim
tarkibi
|
javob
|
Og‘irlik markaz koordinatalari
|
burchak
|
Bosh inersiya momentlari
|
xS
|
uS
|
α
|
Imax
|
Imin
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
1
|
|
a
|
Shveller №18
burchak
80x80x8
|
-0,37
|
11,51
|
-110401
|
1565
|
245
|
b
|
Shveller №24
burchak
125x125x12
|
-1,95
|
16,10
|
-150501
|
4300
|
1155
|
2
|
|
a
|
Shveller №18
burchak
90x90x8
|
0,33
|
6,50
|
-130301
|
1730
|
320
|
b
|
Shveller №24
burchak
100x100x10
|
0,40
|
8,40
|
-110
|
4200
|
580
|
3
|
|
a
|
Shveller №24
l. 200x10
100x100x10
s=12
|
0,48
|
5,45
|
170101
|
2885
|
1065
|
b
|
Shveller №30
l. 260x12
140x140x12
|
0,84
|
8,0
|
110551
|
11700
|
3000
|
4
|
|
a
|
Shveller №14
l. 240x10
125x80x10
|
0,93
|
11,35
|
-280501
|
6175
|
855
|
b
|
Shveller №16
l. 240x10
160x100x12
|
0,21
|
10,
|
-340051
|
7070
|
2060
|
5
|
|
a
|
Shveller №20
l. 180x10
80x80x8
|
16,55
|
7,5
|
350051
|
4660
|
1080
|
b
|
Shveller №14
l. 180x10
110x110x8
|
13,4
|
8,8
|
-400
|
3300
|
600
|
6
|
|
a
|
Shveller №30
l. 200x10
100x100x10
|
12,05
|
9,15
|
-210251
|
10980
|
3020
|
b
|
Shveller №24
l. 240x10
100x100x8
|
13,9
|
6,67
|
440
|
7500
|
3300
|
7
|
|
a
|
Shveller №16
l. 240x10
125x80x10
|
1,30
|
14,0
|
-170151
|
4370
|
520
|
b
|
Shveller №20
l. 300x12
140x140x10
|
1,21
|
17,3
|
-130101
|
8870
|
790
|
8
|
|
a
|
Shveller №16
l. 240x10
125x80x10
|
16,0
|
10,7
|
370151
|
6310
|
1180
|
b
|
Shveller №14
l. 240x10
125x125x10
|
14,2
|
10,7
|
310101
|
5380
|
910
|
9
|
|
a
|
l. 240x10
100x100x10
160x100x10
|
3,55
|
11,0
|
90301
|
5580
|
1140
|
b
|
l. 240x10
90x90x8
180x110x10
|
3,85
|
9,9
|
160051
|
5420
|
1280
|
10
|
|
a
|
l. 400x12
140x140x12
|
14,6
|
15,0
|
200051
|
13350
|
1080
|
b
|
l. 400x12
160x160x12
|
16,6
|
20,0
|
160251
|
28500
|
1680
|
TOPShIRIQ - 2.
ChO‘ZILISh VA SIQILIShDA STATIK NOANIQ MASALALAR
misol 2a. Pog‘onali statik noaniq bruslar
Pog‘onali brus (2 –rasm, 2 –jadval) va kuchlar ta’sirida.
Pog‘onali brus ning noaniqlik darajasi topilsin. Brusni tayanch kuchlari aniqlansin.
Pog‘onali brusning ichki bo‘ylama kuchlari, normal kuchlanish va bo‘ylama uzayish topilsin va epyuralari qurilsin.
Misolni berilishi 2-jadvaldan va sxemasi 2-rasmdan olinadi
2-rasm
Misol 2b. Sterjenli statik noaniq masalalar
1.Po‘lot materialidan tayyorlangan ko‘ndalang kesim yuzasi bir xil bo‘lgan sterjenlar 3-rasmda ko‘rsatilganidek yuklangan. Kuchlar ta’siridan sterjenlar sistemasining muvozanat tenglamalari tuzilsin.
2.Statik noaniqlik daraja topilsin.
3.Sterjenlar sistemasining deformatsiya tenglamalari tuzilsin.
4.Sterjenlarning ko‘ndalang yuzalaridagi kuchlanishlar va uzayishlari xisoblasin.
3-rasm
2-jadval
Variant
|
Kuchlar, kN
|
Ko‘ndalang kesim yuza (cm2) va uzunlik
|
Masofa, m
|
|
|
q
|
A
|
|
|
a
|
b
|
c
|
1
|
10
|
100
|
10
|
10
|
1.0
|
5.0
|
1.0
|
5.0
|
1.0
|
2
|
20
|
90
|
20
|
20
|
2.0
|
4.0
|
2.0
|
4.0
|
2.0
|
3
|
30
|
80
|
30
|
30
|
3.0
|
3.0
|
3.0
|
3.0
|
3.0
|
4
|
40
|
70
|
40
|
40
|
4.0
|
2.0
|
4.0
|
2.0
|
4.0
|
5
|
50
|
60
|
50
|
50
|
5.0
|
1.0
|
5.0
|
1.0
|
5.0
|
6
|
60
|
50
|
10
|
10
|
1.1
|
1.0
|
1.1
|
1.0
|
1.1
|
7
|
70
|
40
|
20
|
20
|
2.2.
|
2.0
|
2.2.
|
2.0
|
2.2.
|
8
|
80
|
30
|
30
|
30
|
3.3
|
3.0
|
3.3
|
3.0
|
3.3
|
9
|
90
|
20
|
40
|
40
|
4.4
|
4.0
|
4.4
|
4.0
|
4.4
|
10
|
100
|
10
|
50
|
50
|
5.5
|
5.0
|
5.5
|
5.0
|
5.5
|
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