1. Go'aaminta dhexroorka dhuunta hawo gelinta miinada
1.1 Qiimaha iibka marinnada hawo-qaadista ee miinada
Marka dhexroorka tuubada hawo-qaadista miinadu 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 dhuumaha hawo-qaadista miinada, cabbir la'aan. Marka ay jiraannkala-goysyada dhererka oo dhan ee marinka hawo-qaadista 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 caabbinta 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 tuubada hawo-mareenka, iska caabbinta dabaysha maxalliga ah ee leexashada, iyo iska caabbinta dabaysha ee meesha laga baxo (nooca-saxaafadeed) ama caabbinta dabaysha (nooca soo saarista) ee marinka hawo-qaadista miinada ayaa ah qiyaastii 20% wadarta iska caabbinta dabaysha is khilaafsan ee marinka hawo-mareenka. Wadarta iska caabinta dabaysha ee hawo-qaadista miinadu waa:
(4)
Sida laga soo xigtay suugaanta, qiimaha isbahaysiga iska caabbinta α ee tuubada 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; Iskuxidhka iska caabbinta jeexjeexa ee tuubada hawo-mareenka dabacsan iyo marin-haweedka dabacsan ee leh qalfoof adag ayaa la xidhiidha cadaadiska dabaysha ee gidaarka, isku-xidhka iska caabbinta iska-hor-istaaggaαQiimaha tuubada hawo-mareenka dabacsan ayaa lagu dooran karaa iyadoo loo eegayo 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-dhafka iska caabbinta khilaafsan ee tuubbada hawo-qaadista 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 |
Si loo sii wado…
Waqtiga boostada: Jul-07-2022
