1. Go'aaminta dhexroorka dhuunta hawo gelinta miinada
1.1 Qiimaha iibka marinnada hawo-qaadista ee miinada
Marka dhexroorka tuubada hawo-mareenada ay korodho, alaabta loo baahan yahay ayaa sidoo kale kor u kacda, sidaas darteed qiimaha iibka ee tuubada macdanta ayaa sidoo kale kordhisa.Marka loo eego falanqaynta tirakoobka ee qiimaha ay bixisay soo saaraha tuubada hawo-mareenka miinada, qiimaha marinka hawo-mareenada macdanta iyo dhexroorka tuubada hawo-mareenada ayaa asal ahaan toosan sida soo socota:
C1 = (a + bd) L(1)
Halkee,C1- Qiimaha iibka ee tuubada hawo-qaadista miinada, CNY; a- korodhay qiimaha dhuunta hawo miinada ee dhererka cutubkiiba, CNY/m;b- isugeynta qiimaha aasaasiga ah ee dhererka cutubka iyo dhexroorka tuubada hawo gelinta miinada;d- dhexroorka tuubada hawo-mareenka macdanta, m;L- Dhererka tuubada hawo-mareenka macdanta ee la iibsaday, m.
1.2 Macdanta marinnada hawo-qaadista kharashka hawo-qaadista
1.2.1 Falanqaynta cabbirrada hawo-qaadista ee deegaanka
Iska caabinta dabaysha ee marinka hawo-qaadista miinada waxa ka mid ah iska caabinta dabayshaRfvee marinka hawo-mareenka miinada iyo iska caabinta dabaysha deegaankaRev, halkaas oo iska caabbinta dabaysha deegaankaRevwaxaa ka mid ah iska caabinta dabaysha wadajirka ahRjo, caabbinta dabaysha xusulkaRbeiyo tuubada hawo-mareenka macdanta ee iska caabbinta dabayshaRou(nooca lagu riixo) ama iska caabbinta dabaysha gudahaRin(nooc ka-saarid).
Wadarta iska caabinta dabaysha ee tuubbada hawo-qaadista ee miinadu waa:
(2)
Wadarta iska caabinta dabaysha ee tuubada hawo-qaadista miinada waa:
(3)
Halkee:
Halkee:
L- dhererka dhuunta hawo ee miinada, m.
d- dhexroorka dhuunta hawo ee miinada, m.
s- meesha isdhaafsan ee marinka hawo miinada, m2.
α- Isku-dubbaridka iska caabbinta is khilaafsan ee marinka hawo miinada, N·s2/m4.Qallafsanaanta derbiga gudaha ee tuubada hawo biraha waa qiyaas ahaan isku mid, sidaas darteedαqiimuhu waxa uu la xidhiidha dhexroorka oo kaliya.Isku dhafka iska caabbinta khilaafsan ee labada tuubbooyinka hawo-qaadista ee dabacsan iyo tuubooyinka hawo-qaadista ee dabacsan ee leh siddooyin adag ayaa la xidhiidha cadaadiska dabaysha.
ξjo- iskudhafka iska caabbinta maxalliga ah ee wadajirka tuubbada hawo-qaadista miinada, aan cabbir lahayn.Marka ay jiraannkala-goysyada dhererka oo dhan ee marinka hawo miinada, wadarta isugeynta iska caabbinta maxalliga ah ee kala-goysyada waxaa loo xisaabiyaa si waafaqsannξjo.
n- tirada kala-goysyada marinka hawo-qaadista miinada.
ξbs- iskudhafka iska caabbinta maxalliga ah marka la leexiyo marinka hawo-qaadista miinada.
ξou- iskudhafka iska caabbinta maxalliga ah ee ka baxa marinka hawo-gelinta miinada, qaadoξou= 1.
ξin- iskudhafka iska caabbinta maxalliga ah ee gelitaanka marinka hawo-qaadista miinada,ξin= 0.1 marka laga soo galo gebi ahaanba, iyoξin= 0.5 - 0.6 marka galitaanka aan lagu soo koobin xagal qumman.
ρ- cufnaanta hawada.
Hawo-qaadista gudaha, wadarta iska caabinta dabaysha ee marinka hawo-qaadista miinada waxa lagu qiyaasi karaa iyadoo lagu salaynayo wadarta iska caabbinta dabaysha.Waxaa guud ahaan la rumeysan yahay in wadarta iska caabbinta dabaysha maxalliga ah ee wadajirka ah ee marinka hawo miinada, iska caabbinta dabaysha maxalliga ah ee leexashada, iyo iska caabinta dabaysha ee meesha (nooca-saxaafadeed) ama caabbinta dabaysha gudaha (nooca soo saarista) Tuubada hawo-qaadista ee miinada ayaa ah ku dhawaad 20% wadarta iska caabbinta dabaysha is jiid jiid ee marinka hawo-qaadista miinada.Wadarta iska caabinta dabaysha ee hawo-qaadista miinadu waa:
(4)
Marka loo eego suugaanta, qiimaha isku-xidhka iska caabbinta iska caabbinta α ee marin-haweedka taageeraha ayaa loo tixgelin karaa mid joogto ah.Theαqiimaha tuubada hawo-mareenka birta waxaa lagu dooran karaa sida ku cad Shaxda 1;Theαqiimaha JZK taxanaha FRP tuubada hawo-qaadista waxaa lagu dooran karaa sida ku cad Shaxda 2;Isku dhafka iska caabbinta jeexjeexa ee tuubada hawo-mareenka dabacsan iyo tuubada hawo-mareenka dabacsan ee leh qalfoof adag ayaa la xidhiidha cadaadiska dabaysha ee darbiga, isku-xidhka iska caabbinta frictionalαQiimaha marinka hawo-mareenka dabacsan ayaa lagu dooran karaa sida ku cad shaxda 3.
Shaxda 1 Isku-dhafan iska caabbinta jajaban ee tuubada hawo-qaadista ee birta
| Dhexroorka dalooliyaha (mm) | 200 | 300 | 400 | 500 | 600 | 800 |
| α× 104/( N·s2·m-4 ) | 49 | 44.1 | 39.2 | 34.3 | 29.4 | 24.5 |
Shaxda 2 Isbahaysiga iska caabbinta jajaban ee tubada unugyada FRP ee taxanaha JZK
| Nooca tuubada | JZK-800-42 | JZK-800-50 | JZK-700-36 |
| α× 104/( N·s2·m-4) | 19.6-21.6 | 19.6-21.6 | 19.6-21.6 |
Shaxda 3 Isku-xidhka iska caabbinta khilaafsan ee tuubbada hawo-qaadista ee dabacsan
| Dhexroorka dalooliyaha (mm) | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 |
| α× 104/N·s2·m-4 | 53 | 49 | 45 | 41 | 38 | 32 | 30 | 29 |
In la sii wado…
Waqtiga boostada: Jul-07-2022
