Structural Hollow Sections (SHS)thiab Rectangular Hollow Sections (RHS) yog cov khoom tseem ceeb hauv kev tsim kho niaj hnub thiab engineering tej yaam num. Cov ntau yam steel profiles tuaj nyob rau hauv ntau qhov ntau thiab tsawg thiab specifications, ua rau lawv haum rau ntau yam kev siv. Hauv phau ntawv qhia dav dav no, peb yuav tshawb txog lub ntiaj teb ntawm SHS thiab RHS, delving rau hauv lawv qhov ntau thiab tsawg, daim ntawv thov, thiab cov ntsiab lus tseem ceeb rau kev xaiv.
Dab tsi yog qhov loj me rau SHS thiab RHS kav?
Thaum nws los txog rau Structural Hollow Sections (SHS) thiab Rectangular Hollow Sections (RHS), kev nkag siab txog qhov ntau thiab tsawg yog qhov tseem ceeb rau engineers, architects, thiab cov kws tsim kho. Cov hlau profiles no muaj nyob rau hauv ntau qhov ntev kom haum rau ntau qhov kev xav tau.
Rau SHS cov kav dej, uas muaj qhov square cross -section, ntau qhov ntau thiab tsawg feem ntau yog li ntawm 20mm x 20mm mus txog 1200mm x 1200mm. Phab ntsa tuab tuaj yeem sib txawv ntawm 1.6mm txog 16mm, nyob ntawm seb cov qauv tsim. Qee qhov feem ntau siv SHS qhov ntau thiab tsawg suav nrog:
- 50 hli x 50 mm
- 75 hli x 75 mm
- 100 hli x 100 mm
- 150 hli x 150 mm
- 200 hli x 200 mm
- 250 hli x 250 mm
- 300 hli x 300 mm
- 350 hli x 350mm
- 400 hli x 400mm
- 450 hli x 450 mm
- 500 hli x 500mm
- 750 hli x 750 mm
- 600 hli x 600 mm
- 800 hli x 800mm
- 900 hli x 900 mm
- 1000 hli x 1000mm
- 1200 hli x 1200mm
RHS cov kav dej, tus yam ntxwv los ntawm lawv cov duab plaub -section, muab kev hloov pauv ntau dua ntawm qhov ntev. Qhov ntau thiab tsawg rau RHS tuaj yeem muaj li ntawm 50mm x 30mm txog 500mm x 300mm lossis loj dua. Phab ntsa thicknesses zoo ib yam li cov SHS, xws li 1.6mm txog 16mm. Nrov RHS qhov ntau thiab tsawg suav nrog:
- 50 hli x 25 mm
- 75 hli x 50 mm
- 100 hli x 50 mm
- 150 hli x 100 mm
- 200 hli x 100 mm
- 300 hli x 200 mm
- 400 hli x 200 mm
- 500 hli x 300 mm
- 600 hli x 200 mm
- 600 hli x 300 mm
- 800 hli x 400mm
- 800 hli x 500mm
- 1000 hli x 500mm
- 1200 hli x 1000mm
- 1200 hli x 800mm
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov ntau thiab tsawg no tsis yog tag nrho, thiab cov tuam txhab lag luam tuaj yeem muab cov kev cai qhov ntev kom tau raws li cov kev xav tau tshwj xeeb. Qhov kev xaiv ntawm qhov loj me nyob ntawm ntau yam, suav nrog kev thauj khoom -cov kev cai, kev tsim vaj tsev, thiab kev thov tshwj xeeb ntawm cov tswv cuab ntawm cov qauv.
Thaum xaiv qhov loj me rau SHS lossis RHS cov kav dej, cov kws ua haujlwm yuav tsum xav txog ntau yam:
1. Load-cov kabmob muaj peev xwm: Cov ntu loj dua thiab cov phab ntsa tuab dua feem ntau muab lub zog thiab thauj khoom ntau dua- cov kabmob muaj peev xwm.
2. Kev ncua ntev: Qhov ntev ntawm tus tswv cuab ntawm cov txheej txheem cuam tshuam rau qhov kev xaiv loj.
3. Kev xav txog qhov hnyav: Ntsuas lub zog nrog tag nrho cov qauv hnyav yog qhov tseem ceeb rau kev tsim qauv zoo.
4. Cov kev cai zoo nkauj: Qee zaum, qhov pom qhov profile ntawm cov seem yuav cuam tshuam rau qhov kev xaiv loj rau kev tsim vaj tsev.
5. Kev sib txuas thiab cov pob qij txha: qhov loj me uas tau xaiv yuav tsum sib haum nrog cov txheej txheem kev sib txuas thiab lwm yam khoom siv.
Kev nkag siab txog cov qauv no thiab lawv cov ntawv thov yog qhov tseem ceeb rau kev txhim kho cov qauv tsim thiab ua kom lub neej ntev thiab kev nyab xeeb ntawm kev tsim kho. Nco ntsoov sab laj txog cov qauv tsim thiab cov qauv, xws li AS / NZS 1163, thaum qhia SHS thiab RHS kav rau koj qhov project.
AS 1163 yeeb nkab specification siv li cas rau SHS?
AS 1163, Australian Standard for structural steel hollow sections, plays lub luag haujlwm tseem ceeb hauv kev txhais cov lus qhia tshwj xeeb rauAS 1163 Pipe SHS(Square Hollow Sections) thiab lwm yam txheej txheem hollow profiles. Cov qauv no ua kom ntseeg tau tias cov seem steel siv hauv kev tsim kho thiab engineering cov haujlwm ua tau raws li cov qauv kev ua tau zoo thiab kev ua tau zoo.
AS 1163 specification npog ntau yam tseem ceeb ntawm SHS kav:
1. Khoom Qib:
AS 1163 txhais cov qib sib txawv ntawm cov hlau siv rau SHS, nrog rau feem ntau yog C350 thiab C450. Cov qib no qhia qhov tsawg kawg nkaus lub zog ntawm cov hlau, nrog C350 muaj lub zog tawm los ntawm 350 MPa thiab C450 muaj 450 MPa. Qhov kev xaiv ntawm qib nyob ntawm seb cov txheej txheem tshwj xeeb ntawm qhov project.
2. Cov txheej txheem tsim khoom:
Tus qauv qhia tias SHS cov kav dej yuav tsum tau tsim los ntawm kev siv hluav taws xob tiv thaiv vuam (ERW) lossis cov txheej txheem pom zoo zoo sib xws. Qhov no ua kom zoo sib xws hauv cov khoom siv vuam zoo thiab tag nrho cov qauv kev ncaj ncees ntawm cov ntu.
3. Dimensional Tolerances:
AS 1163 tau teeb tsa cov kev zam nruj rau qhov ntev ntawm SHS cov kav dej, suav nrog:
Sab nraud qhov ntev (dav thiab qhov tob)
Phab ntsa thickness
Kev ncaj
Squareness ntawm sab
Twist
Cov kev kam rau ua kom ntseeg tau tias cov kav dej SHS ua tau raws li qhov xav tau tshwj xeeb thiab tuaj yeem siv tau rau hauv kev suav cov qauv thiab kev tsim qauv.
4. Nto tiav thiab txheej txheej:
Tus txheej txheem qhia txog qhov yuav tsum tau ua rau saum npoo tiav, suav nrog qib siab ntawm qhov tsis zoo. Nws kuj muab cov lus qhia rau kev tiv thaiv txheej, xws li galvanization, uas tuaj yeem siv los txhim kho corrosion kuj.
5. Mechanical Properties:
AS 1163 qhia txog cov khoom siv kho tshuab uas xav tau ntawmAS 1163 Pipe SHS, suav nrog:
Tensile zog
Yield zog
Elongation
Impact toughness (rau qee qib thiab thicknesses)
Cov khoom no yog qhov tseem ceeb rau kev ua kom ntseeg tau tias SHS cov kav dej tuaj yeem tiv taus qhov kev cia siab thiab ib puag ncig hauv lawv cov ntawv thov.
6. Kev kuaj thiab tshuaj xyuas:
Tus txheej txheem tswj hwm ntau yam kev ntsuam xyuas thiab cov txheej txheem tshuaj xyuas kom paub tseeb tias ua raws li cov cai teev tseg. Cov no yuav suav nrog:
Tensile xeem
Flattening xeem
Kev kuaj pom
Tsis yog -kev kuaj kev puas tsuaj ntawm welds
7. Kos npe thiab cov ntaub ntawv:
AS 1163 xav kom cov kav dej SHS raug cim nrog cov ntaub ntawv tshwj xeeb, suav nrog cov chaw tsim khoom lub npe lossis cov cim lag luam, qib steel, thiab cov qauv tsim. Qhov no ua kom paub tseeb txog kev taug qab thiab pab xyuas kom meej tias cov ntaub ntawv raug siv rau ntawm -site.
Kev thov AS 1163 rau SHS kav dej muaj ntau yam txiaj ntsig:
Quality Assurance: Los ntawm kev ua raws li tus qauv no, cov tuam ntxhab thiab cov muag khoom kom ntseeg tau tias lawv cov khoom ua tau raws li qib zoo, muab kev ntseeg siab rau cov engineers thiab cov neeg tsim khoom.
Design Reliability: Engineers tuaj yeem tso siab rau cov khoom tshwj xeeb thaum tsim cov qauv, paub tias SHS cov kav dej yuav ua tau raws li qhov xav tau hauv ntau yam kev thauj khoom.
Kev Nyab Xeeb: Cov kev cai nruj ntawm AS 1163 ua rau muaj kev nyab xeeb tag nrho thiab ua haujlwm ntev ntawm cov qauv sib txuas nrog SHS kav dej.
Kev Ua Raws Cai: Siv AS 1163-raws li SHS kav dej pab cov haujlwm ua tau raws li cov cai tswj hwm thiab cov cai hauv tsev.
Thaum qhia lossis siv SHS cov kav dej hauv Australian tej yaam num, nws yog ib qho tseem ceeb los xyuas kom meej tias lawv ua raws li AS 1163. Qhov no yuav suav nrog:
Thov daim ntawv pov thawj ntawm kev ua raws cai los ntawm cov neeg muag khoom
Kev tshuaj xyuas cov ntawv xeem los txheeb xyuas cov khoom siv kho tshuab
Ua ntawm -kev tshuaj xyuas qhov chaw los xyuas qhov tseeb qhov tseeb thiab qhov zoo ntawm qhov chaw
Xyuas kom zoo cia thiab tuav kom muaj kev ncaj ncees ntawm cov seem
Los ntawm kev nkag siab thiab siv AS 1163 yeeb nkab specification rauAS 1163 Pipe SHS, engineers thiab cov kws tshaj lij kev tsim kho tuaj yeem ua kom muaj kev siv siab - zoo, txhim khu kev qha cov qauv hauv lawv cov haujlwm. Qhov kev mloog zoo rau kev nthuav dav thiab ua raws li cov qauv no ua rau lub sijhawm ntev - kev vam meej thiab kev nyab xeeb ntawm cov qauv tsim nrog SHS kav.
Dab tsi yog qhov sib txawv tseem ceeb ntawm SHS thiab RHS hauv kev siv cov qauv?
Nkag siab txog qhov sib txawv tseem ceeb ntawm Square Hollow Sections (SHS) thiab Rectangular Hollow Sections (RHS) yog qhov tseem ceeb rau kev txiav txim siab hauv kev siv cov qauv. Txawm hais tias ob qho tib si yog ib feem ntawm cov txheej txheem hollow seem tsev neeg, lawv cov yam ntxwv tshwj xeeb ua rau lawv haum rau cov xwm txheej sib txawv hauv kev tsim kho thiab kev tsim vaj tsev.
1. Geometric Properties:
Qhov sib txawv tshaj plaws ntawm SHS thiab RHS nyob hauv lawv tus ntoo khaub lig-sectional shape:
SHS: square cross-section nrog qhov sib npaug ntawm qhov dav thiab qhov tob.
RHS: Rectangular cross-section nrog qhov dav thiab qhov tob tsis sib npaug.
Qhov sib txawv tseem ceeb hauv geometry no ua rau ntau qhov sib txawv tseem ceeb hauv lawv cov qauv kev coj ua thiab kev siv.
2. Moment of Inertia thiab Section Modulus:
Lub sijhawm ntawm inertia thiab seem modulus yog cov khoom tseem ceeb uas cuam tshuam rau ib ntu lub peev xwm los tiv thaiv kev khoov thiab deflection:
SHS: Muaj lub sijhawm sib npaug ntawm inertia txog ob lub ntsiab lus tseem ceeb vim nws cov duab sib luag. Qhov no ua rau nws muaj zog sib npaug hauv kev tiv thaiv dabtsi yog khoov hauv txhua qhov kev qhia perpendicular rau nws qhov ntev.
RHS: Muaj lub sijhawm sib txawv ntawm inertia txog nws qhov loj thiab me axes. Lub sijhawm ntawm inertia yog qhov loj dua ntawm qhov loj axis (nrog rau sab ntev), ua rau nws muaj zog tiv thaiv dabtsi yog khoov hauv qhov kev taw qhia ntawd.
Qhov sib txawv no ua rau RHS ua haujlwm tau zoo dua hauv kev siv unidirectional dabtsi yog khoov, thaum SHS yog qhov nyiam thaum xav tau ntau lub zog.
3. Torsional Resistance:
Torsional kuj yog lub peev xwm ntawm ib ntu los tiv thaiv kev sib tw:
SHS: Feem ntau muaj kev tiv thaiv torsional ntau dua vim nws cov duab symmetrical, ua rau nws tsim nyog rau cov ntawv thov uas sib tw quab yuam tseem ceeb.
RHS: Muaj qis torsional kuj piv rauAS 1163 Pipe SHSntawm qhov loj me, tab sis qhov no tuaj yeem ua tau zoo hauv qee qhov kev tsim qauv uas xav tau kev tswj tus cwj pwm torsional.
4. Buckling Resistance:
Buckling yog hom kev ua tsis tiav qhov twg tus tswv cuab ntawm cov txheej txheem dheev deforms nyob rau hauv kev nyuaj siab:
SHS: Muab cov buckling tsis sib xws hauv txhua qhov kev qhia vim nws cov duab sib luag, ua rau nws zoo tagnrho rau cov kab thiab cov tswv cuab compression.
RHS: Muab qhov sib txawv buckling resistances txog nws qhov loj thiab me axes, uas tuaj yeem siv tau rau hauv cov xwm txheej tshwj xeeb los txhim kho cov khoom siv.
5. Kev sib txuas tsim:
Cov duab ntawm ntu cuam tshuam rau kev tsim thiab qhov nyuaj ntawm kev sib txuas:
SHS: Feem ntau yooj yim rau kev sib txuas vim nws cov duab zoo ib yam, feem ntau yuav tsum muaj kev sib txuas tsawg dua los yog bolting kev npaj.
RHS: Tej zaum yuav xav tau kev sib txuas sib txuas ntau dua, tshwj xeeb tshaj yog thaum koom nrog cov tswv cuab ntawm ntau qhov sib txawv lossis kev taw qhia.
6. Architectural Aesthetics:
Qhov pom kev pom ntawm cov ntu tuaj yeem yog qhov kev txiav txim siab ntawm cov khoom tsim tawm:
SHS: Muab qhov huv si, zoo sib xws uas feem ntau nyiam nyob rau hauv niaj hnub architectural designs uas tus qauv pom.
RHS: Muab cov kev taw qhia ntau dua, uas tuaj yeem siv los hais txog qee yam qauv tsim lossis tsim kom pom kev txaus siab.
7. Khoom siv tau zoo:
Thaum xav txog kev siv cov khoom siv thiab lub zog - rau - qhov hnyav piv:
SHS: Feem ntau ua haujlwm tau zoo dua thaum thauj khoom siv ntau qhov kev qhia lossis thaum torsional tsis kam yog qhov tseem ceeb.
RHS: tuaj yeem yog cov khoom siv ntau dua -ntaub siv nyob rau hauv beam daim ntaub ntawv qhov twg khoov tshwm sim feem ntau nyob rau hauv ib qho kev taw qhia, raws li cov seem tuaj yeem taw qhia nrog nws cov axis muaj zog raws li lub dav hlau khoov thawj.
8. Span Peev Xwm:
Qhov sib txawv geometries cuam tshuam cov peev txheej ntawm cov ntu:
SHS: Muab kev ua haujlwm zoo ib yam rau luv luv lossis qhov chaw thauj khoom muaj ntau txoj kev.
RHS: tuaj yeem ua tiav ntev dua thaum taw qhia nrog nws cov axis loj ntsug, ua rau nws haum rau cov kab thiab girder daim ntaub ntawv.
9. Fabrication thiab Muaj:
Kev txiav txim siab rau kev tsim khoom thiab cov saw hlau tuaj yeem cuam tshuam kev xaiv ntawm SHS thiab RHS:
SHS: Feem ntau yooj yim muaj nyob rau hauv ntau qhov ntau thiab tsawg vim nws siv ntau hauv ntau daim ntawv thov.
RHS: Muaj ntau qhov sib xyaw ua ke, muab kev hloov pauv ntau dua hauv kev tsim, tab sis qee qhov tshwj xeeb yuav muaj sijhawm ntev dua.
Hauv kev xaus, qhov kev xaiv ntawmAS 1163 Pipe SHSthiab RHS hauv kev siv cov qauv yog nyob ntawm kev soj ntsuam kom zoo ntawm cov haujlwm tshwj xeeb. Cov yam ntxwv xws li cov xwm txheej thauj khoom, ncua ntev, kev xav txog kev tsim vaj tsev, thiab tag nrho cov qauv kev ua haujlwm yuav tsum raug ntsuas los txiav txim siab qhov kev xaiv zoo tshaj plaws. Los ntawm kev nkag siab txog qhov sib txawv tseem ceeb no, cov kws tsim qauv thiab cov kws tsim qauv tuaj yeem txiav txim siab paub qhov zoo ntawm cov qauv kev ua tau zoo, kev zoo nkauj, thiab tus nqi- kev ua tau zoo hauv lawv cov haujlwm.
Cov ntaub ntawv
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