Cov cuab yeej ntawm cov pob zeb thiab cov pob zeb ua kom muaj zog ntxiv rau kev txhawb nqa ntxiv vim yog cov khoom siv ntxiv. Lub tom kawg, los ntawm txoj kev, yog ib qho ntawm feem xav tau feem ntawm ferrous metallurgy, uas tau lees paub los ntawm nws txoj kev siv dav hauv kev tsim kho. Hais txog cov pob zeb ua vaj tse, kev txhawb nqa ua lub luag haujlwm tseem ceeb tshwj xeeb vim tsis muaj peev xwm siv lwm cov kev txhawb nqa uas tsis yog cov hauv qab thiab sab saud. Internal rod reinforcement nrog hlau tuav nyob rau hauv sib txawv configurations yog qhov zoo tshaj plaws kev daws rau qhov teeb meem.
Cov Kev Xav Tau Tshwj Xeeb
Kub-dov, thermomechanically hardened thiab txias-tsim hlau tuav ntawm ntau yam profiles tuaj yeem siv rau txhua kab. Qhov nruab nrab txoj kab uas hla txawv ntawm 12 mus rau 40 mm. Yog tias koj npaj yuav siv cov pas nrig txiasperiodic profile, ces ib tug me me txoj kab uas hla ntawm 3-12 mm kuj siv tau. Nyob rau hauv cov nqe lus ntawm tensile lub zog, chav kawm A thiab B raug tso cai, sib haum mus rau guaranteed yield zog nrog ib tug coefficient ntawm tsawg kawg yog 0.95.
Hauv cov xwm txheej tshwj xeeb, qhov kev txhawb nqa ntawm cov kab monolithic tuaj yeem muaj cov kev cai tshwj xeeb hais txog kev ua kom muaj zog, weldability, corrosion resistance thiab qaug zog. Raws li txoj cai, qhov no yog vim qhov tshwj xeeb ntawm cov pob zeb sib xyaw thiab cov cement siv. Qhov tseem ceeb tseem ceeb nyob rau hauv yuav luag txhua qhov kev txhawb nqa yog qhov xwm txheej ntawm daim ntawv cog lus nrog pob zeb. Qhov tsis muaj adhesion tuaj yeem raug them los ntawm kev tsim cov profile nrog grooves thiab ridges. Tib qhov kub-dov thiab txias-tsim rods tuaj yeem muaj annular thiab crescent-shaped protrusions ntawm ntau qhov sib txawv. Hloov pauv, ntau hom pob zeb nrog cov qauv nkig tso cai rau kev siv cov pas nrig nkaus xwb - piv txwv li, chav kawm A240. Tam sim no nws tsim nyog txav mus rau qhov kev xav paub ntxaws ntxiv ntawm qhov tsis muaj kev txhawb nqa uas siv los ntxiv dag zog rau cov kab.
Rebar length
Thaum tso ib kem prefabricated, cov yam ntxwv ntawm cov formwork yog ua tib zoo xam, uas yuav tsum organically muaj xws li cov khoom siv hlau reinforcing. Nws yog ib qho tseem ceeb uas qhov kawg ntawm cov pas nrig ua haujlwm uas tsis txuas nrog cov khoom thauj tog rau nkoj yog nyob ntawm qhov deb li nram qab no los ntawm qhov kawg ntawm ntu:
- 20 hli yog ib kab monolithic nrog qhov ntev ntawm yam tsawg 6 m yog teem.
- 15 hli yog tias kab ntev dua 18 m. Kev txwv tib yam siv rau cov qauv mast thiab kev txhawb nqa.
- 10 hli yog tias ib kab prefabricated nrog qhov ntev ntawm tsawg dua 18 yog ntegm.
Nyob rau hauv txhua rooj plaub, kev txhawb nqa ntawm kem yuav tsum tau tawm ntawm ib feem ntawm lub bar, uas yuav tsum tau tiv thaiv nrog tshwj xeeb los tiv thaiv corrosion los yog ntxiv insulated nrog thav duab khoom.
Rebar diameter
Thaum cov pas nrig ntev, cov khoom siv nrog lub thickness tsawg kawg yog 16 hli. Monolithic prefabricated qauv kuj tseem tuaj yeem ntxiv nrog 12 hli rods. Tsis tas li ntawd, cov kab me me raug tso cai thaum siv cov khoom siv dag zog ua los ntawm cov qauv hlau nrog cov txheej txheem tiv thaiv. Kev suav nyiaj rau txoj kab uas hla kuj tseem ceeb heev los ntawm qhov pom ntawm qhov kev teeb tsa ntawm nws qhov chaw nyob hauv lub cev ntawm kab. Yog li, cov rods longitudinal tuaj yeem ntsia tau rau hauv ib kab nkaus xwb thiab nyiam dua nrog lub shutter ceev ntawm qhov sib npaug ntawm txoj kab uas hla. Yog hais tias nws yog npaj los txhawb lub kem nrog rods ntawm txawv thicknesses, lub siab tshaj plaws ntawm ob hom ntawv tso cai tsis tau mus rau hauv tus account lub structural reinforcing khoom. Cov pas nrig ntawm cov kab sib txawv feem ntau yog siv txhawm rau txuag nyiaj, tab sis qhov loj me uas nyob ib sab tsis tuaj yeem siv rau hauv tib kem. Piv txwv li, nws tsis raug tso cai rau nteg cov pas nrig nrog txoj kab uas hla ntawm 8 thiab 10 hli lossis 10 thiab 12 hli.
Txoj kev txhawb zog
Kev suav ntawm thaj chaw yog ua raws li cov ntu ntawm qhov kev ncua ntev. Yog li ntawd, nws yog kwv yees li cas feem pua ntawm cov seem ntawm cov tuav nyob rau saum npoo ntawm kab. Qhov siab tshaj plaws ntawm 5% yog tso cai, tab sis tsuas yog nyob rau hauv cov ntaub ntawv ntawm kev ntsuas ntawm cov pas nrig tsis sib tshooj. Kev sib tshooj sib tshooj ob npaug ntawm qhov chaw hla ntu ntawm qhov kev txhawb nqa ntawm cov pob qij txha, uas tsis tas yuav tso cai rau kev sib dhos kom raug ntawm kab. Koj kuj yuav tsum tuav lub symmetry ntawm qhov chawrods txheeb ze rau qhov chaw hla ntawm cov qauv - tshwj xeeb tshaj yog thaum nws los txog rau yav tom ntej kev ua haujlwm ntawm cov qauv nrog lub siab khoov load. Ib txoj kev los yog lwm qhov, qhov zoo tshaj plaws feem pua ntawm kev txhawb nqa sab yuav yog 2-3%. Nyob rau hauv seem nws tus kheej, ib tug yuav tsum coj mus rau hauv tus account tsis tsuas yog lub hauv paus ntawm lub bar, tab sis kuj protrusions nyob rau hauv daim ntawv ntawm ridges.
Dab tsi yuav tsum yog kev koom tes ntawm kev txhawb nqa tuav?
Kev sib txuas thiab rebar qhov hluav taws xob kuj txiav txim siab qhov kev ntseeg tau ntawm cov qauv. Lub luag haujlwm tseem ceeb ntawm kev sib tshooj twb tau sau tseg, uas nce ntxiv nrog kev siv cov kab monolithic. Nyob rau tib lub sijhawm, qhov cuam tshuam ntawm kev sib raug zoo ntawm cov qauv kev ncaj ncees ntawm cov kab ke yuav tsum tsis txhob kwv yees. Qhov tseeb yog hais tias, piv txwv li, ib tug pas nrig 25-mm (nyob rau hauv txoj kab uas hla) yuav tsum tau koom nrog ib tug sib tshooj nyob rau hauv ib tug ntev ntawm tsawg kawg yog 140 cm. Ntxiv mus, yog hais tias lub docking yog ua nyob rau hauv ib tug khiav, qhov kev ncua deb yog ob npaug. Yog li ntawd, nws raug nquahu kom siv zog kom txo qis cov kev sib txuas ntawm cov kab sib txuas thaum txhawb nqa kem nrog longitudinal tuav. Yog hais tias nws muaj kev txhawj xeeb loj spans thiab qhov kev siv ntawm kev hloov chaw yog inevitable, ces cov pob qij txha yog pauv mus rau qhov chaw uas cov seem ntawm lub kem nws tus kheej hloov. Xws li configurations muaj nyob rau hauv stepped, ob ceg, thiab break designs. Vuam nrog cov ntaub qhwv kuj pom zoo ua lwm txoj hauv kev.
Space ntawm rods
Pib nrog, nws tsim nyog hais txog qhov tseem ceeb ntawm qhov sib npaug ntawm cov khoom siv ntxiv thiab cov voids hauv lub cev ntawm kab. Oversaturation ntawm kev ua hauj lwm hlau rods tsis muaj zog lub pob zeb qauv, ua rau nws rhiab heev rau dynamic loads. Conversely, qhov tsis zoocov khoom siv txhawb zog ua rau muaj kev pheej hmoo ntawm kev puas tsuaj rau kab ke thaum ua haujlwm hauv cov khoom zoo li qub. Txawm hais tias cov plag tsev thiab cov kab txuas ntxiv ua rau ib leeg nyob rau hauv nruab nrab cov ntsuas ntsuas, tom qab ib ntus cov kab nrib pleb yuav pib tsim nyob rau hauv cov seem tsis muaj zog ntawm cov qauv. Kev sib npaug tuaj yeem tswj tau los ntawm kev tswj hwm tus qauv kev ncua deb ntawm cov tuav tuav ntawm 400 mm. Yog hais tias qhov kev ncua deb no tsis txaus vim qhov me me ntawm cov pob zeb crushed los yog pob zeb hauv cov kev daws teeb meem, ces cov qhov khoob loj yog diluted nrog cov txheej txheem nyias reinforcement nrog ib txoj kab uas hla ntawm 12 hli.
Txoj kev txwv ntawm kev tiv thaiv txheej txheem
Qhov siab tshaj plaws txheej ntawm qhov ntev ntev yog 50 hli. Qhov tuab no suav nrog ob lub hauv paus ntawm tus pas nrig thiab nws cov txheej txheem coated. Qhov muaj peev xwm ntawm kev siv cov pas nrig nrog txoj kab uas hla ntawm 40 mm thaum tswj kev thev naus laus zis 10 hli yog vim qhov tseeb tias cov txheej txheem txhawb nqa nws tus kheej yuav xav tau kev txhawb nqa ntxiv. Tshwj xeeb, kev txhawb nqa ntawm txhua kab nrog ib feem ntawm 600x800 mm muab rau kev suav nrog cov welded mesh, clamps thiab ties. Loj-hom rods ntxiv fastened ua ke nrog reinforcing ligaments. Ntxiv mus, cov ntsiab lus ntxiv ntawm kev txhawb nqa nws tus kheej yuav tsum tsis txhob tsis meej pem nrog overlays thaum lub sij hawm vuam, uas ua lub luag haujlwm tseem ceeb ntawm kev txuas ob lossis ntau dua rods.
Qhov kev txwv tseem ceeb cuam tshuam txog qhov tuab ntawm txheej tiv thaiv, uas yog vim muaj kev pheej hmoo ntau ntxivtawg ntawm kem nyob rau hauv qhov chaw uas rods hla. Cov kev ntxhov siab uas tau ntsib los ntawm ib qho kev sib xyaw ua ke nrog cov neeg txawv teb chaws suav nrog yuav siab dhau heev thiab, nyob rau hauv cov khoom hnyav, yuav ua rau kev puas tsuaj. Qhov tseem ceeb no yog ib feem cuam tshuam los ntawm cov lus hais saum toj no thiab cov clamps, tab sis nws yog qhov zoo tshaj plaws los pib ua raws li cov cai rau kev tsim cov txheej txheem ntxiv.
Yuav tsum muaj kev txhawb nqa kev hloov pauv
Nyob rau hauv kab qauv, qhov twg tus qauv transverse quab yuam tsis tuaj yeem muab los ntawm cov qauv pob zeb nkaus xwb, kev hloov pauv hloov kuj tseem siv. Cov kauj ruam thaum tso nws yuav tsum tsis pub tshaj 300 mm. Yog hais tias nws yog npaj los ua ib tug compressed reinforcement, ces kev xam ntawm lub reinforcement ntawm kem los ntawm offsets yog ua raws li cov thickness ntawm cov pas nrig - cov kauj ruam yuav tsum tsis txhob ntau tshaj 15 diameters, tab sis haum rau 500 mm. Raws li rau kev sib cuam tshuam ntawm transverse thiab longitudinal reinforcement, nws yuav nyob ntawm seb cov seem ntawm kem thiab nws cov saturation nrog cov pas nrig ua haujlwm. Nyob rau hauv txoj cai, ob configurations yog ua tau. Nyob rau hauv ib qho, mating tsis raug tso cai, vim hais tias ib txheej ntawm longitudinal rods yog teem los ze zog mus rau lub ntug, thiab transverse rods yog nteg nyob rau hauv lub qhov khoob ntawm sab laug. Nyob rau hauv qhov kev xaiv thib ob, cov pob qij txha yog tsim yog tias qhov kev ncua ntev yog siv nyob rau hauv ob peb kab ntawm ntug mus rau hauv nruab nrab. Yeej, transverse nyias rods txuas nrog cov qauv rods nrog ib txoj kab uas hla tsis tshaj 12 hli.
Kem qhov cuab yeej cuab tam
Txoj kev txhawb zog sib txawv hauv cov txheej txheem khi, txoj hauv kev formwork thiab kev teeb tsa bar. Raws li rau knitting, nws yuav ua tau nrog hlau los yogwelded txoj kev. Hauv thawj kis, nws raug nquahu kom siv rab phom knitting siv rau fittings, thiab nyob rau hauv rooj plaub thib ob, lub tshuab inverter vuam tshuab rau kev sib txuas raug. Nyob rau theem no, tus ncej yog tsim. Lub configuration ntawm lub reinforcement nyob rau hauv cov kab yuav txawv nyob ntawm seb tus yam ntxwv ntawm cov qauv. Nws yog qhov zoo tshaj plaws los siv ib qho kev sib xyaw ua ke nrog kev siv cov longitudinal thiab transverse reinforcement, nyob rau hauv uas nyob ib sab knitting ntawm ob thav ntawv kuj yuav siv tau. Lub formwork qauv yog teem nrog kev pab los ntawm molding blanks, nyob rau hauv uas lub npaj hlau skeleton yog immersed thiab ces nws yog poured nrog pob zeb. Qhov sib txawv ntawm cov txheej txheem ntawm kev tsim formwork los ntawm cov khoom siv - ntoo, polystyrene ua npuas ncauj los yog cov ntaub ntawv fiber ntau ua ke. Hauv qhov kev xaiv no, qhov xwm txheej tseem ceeb yog qhov muaj peev xwm ntawm kev sib txuas ntxiv thiab kev ua haujlwm raws li qhov hnyav thiab kev thauj khoom siv dav dav.
Txhim kho ntawm kab hauv paus
Cov kab hauv tsev tau teeb tsa rau ntawm lub hauv paus, lub npe hu ua cov iav iav, uas tseem muaj zog ntxiv. Txhawm rau tsim ib feem ntawm cov txheej txheem ib leeg, cov qib pob zeb hnyav nrog cov chav kawm muaj zog yog siv. Kev txhawb zog ntawm cov iav yog ua los ntawm kub dov rods nrog ib ntus profile. Thaum txhim kho lub hauv paus rau hauv kem, kev sib tshuam ntawm ib leeg tuav nrog cov ntsiab lus ntawm lub ntsiab longitudinal reinforcement yuav yog qhov tseem ceeb. Rau qhov ligament no, ntawm qhov kev hloov pauv ntawm ib leeg mus rau sab ncej, rods nrog washers yog welded rau lub cev pob txha ntawm lub tes tsho kub dov. Qhov nyuaj tsuas yog nyob rau hauvtxoj kev hloov pauv ntawm ib qib mus rau lwm qhov, saib qhov sib luag ntawm kev txhawb nqa contours.
Txhim kho cov hlua khi
Qhov nyuaj tshaj plaws, los ntawm qhov pom ntawm qhov kev teeb tsa ntawm cov pas nrig, yog qhov kev txhawb nqa ntawm txhua kab nrog ib ncig ntawm ntu. Qhov teeb meem nyob rau hauv qhov teeb meem ntawm configuration ntawm lub reinforcing txheej, uas yuav tsum tau ntxiv kev txhawb nqa. Nyob rau hauv xws li cov tshuab, indirect reinforcement nrog kauv hlau rods yog siv. Cov yam ntxwv ntawm kev txhawb nqa ntawm cov kab puag ncig yog qhia nyob rau hauv qhov tseeb hais tias cov longitudinal rods yog ntxiv qhwv nyob ib ncig ntawm lub perimeter nrog coils ntawm overhead hlau. Hauv qhov no, txoj kab uas hla ntawm cov kauv tsis ntau tshaj 20 cm.
Txhim kho kab ke consoles
Vim tias tsis muaj kev xaiv rau kev txhim kho kab kev txhawb nqa, cov neeg tsim khoom feem ntau siv cantilever ledges ua ib feem ntawm kev txhim kho cov qauv. Nws raug nquahu kom txhim kho cov khoom zoo li no rau ntawm cov ncej steel, uas tuaj yeem suav nrog hauv qab nthab lossis hauv qab lub hauv paus. Consoles yog ntxiv dag zog nrog hlau rods ntawm me me txoj kab uas hla, clamps thiab welded mesh, nyob ntawm seb tus tsim tsis. Cov txiaj ntsig zoo tshaj plaws ntawm kev ntxiv dag zog rau txhua kab hauv kev sib xyaw nrog cov consoles tuaj yeem ua tiav nrog ib pawg homogeneous ntawm kev sib tshooj, lub ntsiab ncej ntawm lub cev thiab ib leeg.
Zaj lus
Cov yam ntxwv ntawm kev siv lub zog ntxiv hauv kab yog txiav txim siab los ntawm cov txheej txheem rwb thaiv tsev ntawm qhov no ntawm cov qauv. Tau kawg, ob qho tib si sib tshooj ntawm sab saum toj thiab hauv qab muab kev txhawb nqa tsim nyog,tab sis overpressure nrog load tuaj yeem cuam tshuam ncaj qha rau cov qauv ntawm kab. Nws yog los tiv thaiv cov txheej txheem sab hauv ntawm kev puas tsuaj uas siv cov khoom siv ntev thiab kev sib hloov. Nyob rau tib lub sijhawm, cov kev xav tau muab kev ywj pheej ntau rau cov neeg tsim qauv ob qho tib si hauv kev xaiv cov pas nrig thiab hauv kev teeb tsa ntawm lawv qhov chaw. Cov kev txwv tseem ceeb feem ntau cuam tshuam nrog kev xaiv cov khoom siv, kev teem caij ntawm qhov ntev thiab cov txheej txheem ntawm kev txhim kho tus ncej.
