Bracing System Hauv Steel Structure

Dab tsi yog a Bracing System hauv Steel Structure?

Steel qauv tsev yog dav siv nyob rau hauv ntau yam industries li warehouses thiab kev cob qhia, vim tias lawv muaj lub zog zoo heev, seismic tsis kam, thiab hluav taws kub.

Lub bracing system yog ib tug tswv cuab ntawm cov txheej txheem thib ob hauv cov qauv hlau, tab sis nws kuj yog ib feem tseem ceeb.

Nyob rau hauv lub portal ncej steel qauv, lub bracing system plays lub luag hauj lwm tseem ceeb. Qhov no feem ntau yog tshwm sim hauv:

• Rau cov qauv nrog cov phiaj xwm hauv pem teb, cov txheej txheem bracing kuj pab txhawb kev hloov kho ntawm cov qauv nruj, ua rau cov qauv zoo sib xws thiab muaj kev ntxhov siab, thiab txhim kho nws tag nrho kev ncaj ncees.

• Ua kom muaj kev ruaj ntseg ntawm tag nrho cov qauv thiab cov khoom ntawm tus kheej.

• Hloov lub zog kab rov tav mus rau lub hauv paus thiab kev pabcuam kev teeb tsa ua haujlwm, thiab lwm yam.

Kem Bracing System

Inter-kem bracing yog ib qho tseem ceeb hauv cov txheej txheem steel siv los txhim kho cov qauv kev ruaj ntseg thiab hloov cov kab rov tav loads (xws li cua loads thiab seismic rog).

Nws feem ntau yog muab tso rau ntawm cov kab hlau uas nyob ib sab. Nws lub luag haujlwm yog txhawm rau txhim kho lub lateral tawv thiab tag nrho kev ncaj ncees ntawm cov qauv, txo qhov ntev ntawm cov kab, thiab tiv thaiv lateral instability los yog deformation ntawm txhua kab nyob rau hauv kev ntxhov siab.

Lub luag haujlwm tseem ceeb ntawm inter-kem bracing yog:

• Lateral force resistance: Resisting kab rov tav loads (cua loads, seismic rog) thiab txo cov structural lateral txav.
• Kev ruaj ntseg ruaj khov: txwv tsis pub txav mus rau sab nraud ntawm txhua kab, txo qhov sib luag ntawm cov kab, thiab txhim kho kev ruaj ntseg.
• Kev thauj mus los: Hloov cov kab rov tav mus rau hauv lub hauv paus lossis lwm cov tswv cuab ntawm lub zog tiv thaiv (xws li cov phab ntsa shear).
• Kev tsim kho-theem stability: Muab kev ruaj ntseg ib ntus thaum lub sij hawm installation ntawm steel qauv.

Raws li lawv txoj kev taw qhia, inter-kem bracing tuaj yeem muab faib ua ob hom: transverse bracing thiab longitudinal bracing.

• Transverse bracing: Perpendicular mus rau longitudinal axis ntawm lub tsev, tiv thaiv lateral horizontal rog (xws li cua loads).
• Longitudinal bracing: Teem raws lub longitudinal axis ntawm lub tsev, resisting longitudinal kab rov tav rog.

Longitudinal kev txhawb nqa tau muab faib ua puag ncig steel kev txhawb nqa, lub kaum sab xis steel txhawb nqa.

Hauv kev siv cov tswv yim, daim ntawv tsim nyog ntawm kem bracing yuav tsum raug xaiv raws li cov qauv tsim thiab cov kev cai tshwj xeeb. Tsis tas li ntawd, cov cai thiab cov qauv tsim nyog yuav tsum tau ua raws li cov txheej txheem tsim thiab kev tsim kho kom ntseeg tau tias muaj kev nyab xeeb thiab ruaj khov ntawm kab bracing.

Nws yog qhov zoo dua los siv ib hom inter-kem bracing hauv tib lub tsev, thiab nws tsis pom zoo kom sib xyaw ntau hom inter-kem bracing. Yog tias vim yog qhov yuav tsum tau ua haujlwm xws li qhib qhov rooj, qhov rais lossis lwm yam, kev txhawb nqa ncej nruj lossis kev txhawb nqa truss tuaj yeem siv. Thaum cov txheej txheem kev txhawb nqa yuav tsum tau siv ua ke, lub rigidity yuav tsum ua kom zoo ib yam li qhov ua tau. Yog hais tias qhov rigidity tsis tuaj yeem ua tau raws li qhov ntev, txoj kab rov tav lub zog uas tau los ntawm txhua qhov kev txhawb nqa yuav tsum tau txheeb xyuas kom meej kom ntseeg tau tias kev ruaj ntseg thiab kev nyab xeeb ntawm cov qauv symmetry.

Lub kaum ntse ntse

Lub kaum sab xis yog tshwj xeeb rau cov khoom-web portal rigid thav duab lub teeb steel qauv tsev. Lub kaum sab xis yog teem caij nruab nrab ntawm qhov qis flange ntawm lub rigid ncej inclined beam thiab lub purlin los yog nruab nrab ntawm lub puab flange ntawm lub rigid ncej sab kem thiab phab ntsa beam. Nws txhawb kev ruaj ntseg ntawm cov kab nrib pleb inclined thiab nruj ncej sab kab. Lub kaum sab xis yog cov koom haum pabcuam uas tsis dhau los ua lub kaw lus ntawm nws tus kheej.

Kev ua haujlwm ntawm cov thav duab nruj inclined beam lub kaum sab xis yog txhawm rau tiv thaiv qhov tsis ruaj khov ntawm sab hauv ntawm lub nqaj thaum lub tis qis yog compressed.

Lub kaum sab xis hlau feem ntau yog siv rau lub kaum sab xis, thiab lub kaum sab xis ntawm lub ces kaum bracing thiab purlin lossis phab ntsa beam yuav tsum tsis txhob tsawg dua 35 °, thiab qhov tsawg kawg nkaus lub kaum sab xis steel L40 * 4 tuaj yeem siv. Corner braces yog bolted rau kab teeb lossis sab kab thiab purlins lossis phab ntsa kab teeb.

Feem ntau, lub kaum sab xis yuav tsum tau muab ntsia rau hauv tag nrho qhov ntev ntawm lub thav duab nruj inclined beam, feem ntau xav txog qhov muaj peev xwm ntawm flange ntawm lub nqaj raug compressed nyob rau hauv qhov kev txiav txim ntawm cua load, nws tuaj yeem ntsia tau rau hauv qhov chaw qis dua. flange ntawm lub nqaj yog compressed ze ntawm kev txhawb nqa.

Bracing System Setting Principles

• Kom meej meej, tsim nyog thiab yooj yim kis tau tus load longitudinal, thiab shorten lub zog kis tau tus mob txoj kev kom ntau li ntau tau;
• Ua kom muaj kev ruaj ntseg ntawm lub dav hlau tawm ntawm cov txheej txheem, thiab muab cov ntsiab lus txhawb nqa sab nraud rau kev ruaj ntseg tag nrho ntawm cov qauv thiab cov khoom siv;
• Nws yog qhov yooj yim rau nruab cov qauv;
• Ua tau raws li qhov yuav tsum tau muaj zog thiab nruj thiab muaj kev sib raug zoo.