Ngezansi kwesingeniso esifushane sesibalo somthwalo womoya ovimbela umsindo ukuze uthole ireferensi

Ngezansi kwesingeniso esifushane sesibalo somthwalo womoya ovimbela umsindo ukuze uthole ireferensi

Isimo esijwayelekile:

Ngokwesibonelo: 2M ukuphakama umsindo umgoqo;CC 2.5M ibanga;Fakaku-flyover.

 1.Bala umthwalo womoya

F_wb=K_o× K₁ × K₃ × W_d × A_wh

Kuphi

F_wb= Inani elijwayelekile lomthwalo womoya ophambanayo (kN)

W₀= Ingcindezi yomoya eyinkomba (kN/m2)

W_d= Yakha ingcindezi yomoya eyinkomba (kN/m2)

A_wh=Indawo enqamula umoya

V_5.5= Isivinini somoya esiyisisekelo sokuklama endaweni lapho ibhuloho likhona (m/s)

V_d=Dizayina isivinini somoya esibhekisela ekuphakameni okungu-Z (m/s)

Z= Ubude ngaphezu komhlaba (m)

Y=Amandla adonsela phansi komoya (kn/m3)

K₀=Dizayina i-coefficient yokuguqulwa yenkathi yokuphindaphinda kwesivinini somoya.Ngomugqa wenkomishi webhuloho elikhulu elinembobo eyodwa yama-indes, k₀=1.0;kwelinye ibhuloho k₀=0.9;okweBhuloho ngesikhathi sokwakhiwa, k₀=0.75;Uma ibhuloho lisezindaweni ezithandwa yizishingishane, inani le-K linganyuswa ngokulingene ngokuya ngesimo sangempela.

K₃= Isilinganiso sendawo kanye nezimo zendawo, Ngokujwayelekile K₃=1.0.

K₅=isilinganiso sesivinini somoya, k₅=1.38 ebusweni buka-A,B, ku-C,D okungu-K₅=1.70.

K₂=I-coefficient yokulungisa yoshintsho lokuphakama kwesivinini somoya uma kucatshangelwa isigaba sokugwedla kwendawo kanye negradient;i-coefficient yokulungisa K₂isivinini somoya kanye nokuhluka kobude esakhiweni esingaphansi samaBhuloho atholakala ezindaweni ezingaphansi kwe-intermontane, ezigodini noma ezindleleni zezintaba nezinye izikhathi ezikhethekile kunqunywa ngokwesigaba B esingaphansi.

K₁=i-coefficient yokumelana nomoya;

G= ukusheshisa kwamandla adonsela phansi, g=9.8m/s2.

Ubulukhuni obungaphezulu bungahlukaniswa ngo-A, B,C,D.

I-Class A ibhekisela endaweni yolwandle olungasogwini kanye nesiqhingi, ugu, ugu lwechibi kanye nogwadule

Ikilasi B lisho amasimu, amadolobhana, amahlathi, amagquma, amadolobha kanye nezindawo zasemadolobheni ezinezindlu ezingatheni.

I-Class C ibhekisela ezindaweni zasemadolobheni ezinamaqoqo aminyene ezakhiwo

Ikilasi D libhekisela endaweni yasemadolobheni eneqoqo eliminyene lezakhiwo nezindlu eziphakeme.

Indawo ingeye-Class C, ubude ukusuka phansi buyi-8.5m, kutholakala u-K₀=0.9;K₁=1.97;K₂=0.86;K₅=1.70;V_5.5=33m/s.

So F_wh= k₀k₁k₃W_d A_wh=12.63kN

2. Inani lokuklama lamandla avundlile

S_wh=1.4Fwh=17.68(kN)

H insimbi mimbazo yesikhumbuzo sokugoba: M= 17.68×22.5=14.14(kN·m)

Ikholomu yensimbi ye-H yenziwe ngensimbi kazwelonke eyi-150x150x7x10mm, umgwaqo ovumelekile=215MPa, ingcindezi ye-shear 125MPa, ngi_x=1660cm4, W_x=221cm3, A=40.55cm2

3.Ukubalwa kwamandla okugoba

Hlangana nemfuneko.

4.Ukuchezuka Ukubala

Mimfuneko

5. Isibalo sokuzinza okuphelele

Hlangana nemfuneko

Isibalo sokulayisha esingaphezulu ukuze uthole ireferensi.