Qhov yuav tsum tau muab tso rau hauv pob zeb

1. Kev Thauj Khoom Loj

Thaum lub twj tso kua mis, nws yog ib qho tseem ceeb kom ntseeg tau tias lub twj tso kua mis ua haujlwm tsis tu ncua. Yog tias muaj kev ua haujlwm tsis zoo, lossis yog tias lub sijhawm poob qis dua 45 feeb lossis pom tias muaj kev sib cais, cov pob zeb tseem tshuav hauv cov kav dej yuav tsum tau muab tshem tawm tam sim ntawd los ntawm kev siv dej siab lossis lwm txoj hauv kev.

2. Kev vibration yuav tsum

• Lub caij nplooj zeeg dawb qhov siab ntawm pob zeb los ntawm qhov chaw tawm yuav tsum tsis pub tshaj 2 meters. Yog tias nws siab tshaj 2 meters, ntsuas yuav tsum tau ua kom txo tau qhov no.
• Qhob yuav tsum tau nchuav rau hauv cov khaubncaws sab nraud povtseg thiab ntu tsis tu ncua. Qhov siab ntawm txhua txheej yuav tsum tau txiav txim siab raws li cov yam ntxwv ntawm cov qauv thiab qhov ntom ntom ntawm kev txhawb nqa. Feem ntau, qhov siab ntawm txhua txheej yog 1.25 npaug ntawm qhov ntev ntawm lub vibrator qhov chaw ua haujlwm, nrog qhov siab tshaj plaws ntawm 50 cm.
• Thaum siv lub vibrator immersion, ntxig nws sai sai thiab thim nws maj mam. Cov ntsiab lus ntxig yuav tsum sib npaug sib npaug thiab txav mus ua ntu ntu yam tsis muaj qhov chaw ploj, kom ntseeg tau tias muaj kev sib koom ua ke. Qhov kev ncua deb ntawm cov ntsiab lus ntxig yuav tsum tsis pub tshaj 1.5 npaug ntawm lub vojvoog zoo ntawm lub vibrator (feem ntau yog 30-40 cm). Thaum vibrating lub sab sauv txheej, lub vibrator yuav tsum tau muab tso rau 5 cm nyob rau hauv lub qis txheej kom tshem tawm cov kev sib koom ntawm ob txheej.
• Qhob pouring yuav tsum tsis tu ncua. Yog tias tsim nyog, lub sij hawm luv luv yuav tsum raug txo kom tsawg, thiab txheej tom ntej yuav tsum tau nchuav ua ntej txheej txheej pib.
• Thaum lub sij hawm cov txheej txheem pouring, tsis tu ncua xyuas cov formwork, reinforcement, reserved qhov, embedded qhov chaw, thiab stirrups rau tej kev txav, deformation, los yog blockages. Yog tias pom muaj teeb meem, tsis txhob nchuav tam sim ntawd thiab kho qhov tsim nyog ua ntej cov pob zeb sib tov.

3. Txau cov kab

• Ua ntej nchuav pob zeb rau hauv txhua kab, ib txheej ntawm 5-10 cm tuab ntawm ib nrab-split gravel pob zeb, sib piv cov pob zeb sib xyaw, yuav tsum muab tso rau hauv qab ntawm kem. Kem qhob yuav tsum tau vibrated hauv txheej. Thaum siv lub vibrator immersion, lub thickness ntawm txhua txheej yuav tsum tsis txhob ntau tshaj 50 cm, thiab lub vibrator yuav tsum tsis txhob kov lub reinforcement los yog embedded qhov chaw. Ntxiv nrog rau kev vibrating sab saum toj, ib tus neeg yuav tsum tau nyob hauv qab kom coj mus rhaub cov formwork.
• Rau cov kab qis dua 3 meters siab, pob zeb tuaj yeem nchuav ncaj qha los ntawm sab saum toj. Rau cov kab siab dua 3 meters, ntsuas yuav tsum tau siv lub raj rau segmented pouring, nrog rau txhua ntu qhov siab tsis tshaj 2 meters.
• Kem pob zeb yuav tsum tau nchuav rau hauv ib qho kev ua haujlwm. Yog tias tsim nyog yuav tsum muaj kev sib koom ua ke, nws yuav tsum tau tso rau hauv qab lub ntsiab nqaj.

4. Pouring Beams thiab Slabs

• Rau ribbed pem teb slabs, kab teeb thiab slabs yuav tsum tau poured ib txhij, pib ntawm ib kawg siv "txuas slurry txoj kev." Ua ntej, lub beam yog poured nyob rau hauv cov khaubncaws sab nraud povtseg raws li beam qhov siab los ua ib tug stepped zoo. Thaum lub hauv qab ntawm lub slab mus txog, ncuav nws ua ke nrog slab pob zeb. Lub pouring nce mus tsis tu ncua raws li daim ntawv stepped txuas ntxiv.
• Rau cov kab hluav taws xob loj loj uas txuas nrog lub slab, cov nqaj tuaj yeem muab nchuav cais. Kev tsim kho kev sib koom ua ke yuav tsum sab laug 2-3 cm hauv qab slab hauv qab. Pouring thiab vibrating yuav tsum tau ua tib zoo sib koom ua ke. Thawj txheej ntawm pob zeb yuav tsum tau nchuav maj mam, kom ntseeg tau tias lub hauv qab ntawm lub nqaj yog tag nrho consolidated ua ntej pouring txheej thib ob. Siv "txoj kev thawb slurry" kom cov cement slurry qhwv cov pob zeb raws cov kab hauv qab. Tom qab txhua txheej yog sib sau ua ke, txheej tom ntej yuav tsum tau nchuav. Kev saib xyuas tshwj xeeb yuav tsum tau muab rau kev sib sau cov kab hauv qab thiab kab flanges. Lub vibrator yuav tsum tsis txhob kov qhov kev txhawb zog los yog kos qhov chaw.
• Kev tsim kho cov pob qij txha yuav tsum tau muab tso rau hauv nruab nrab peb ntawm qhov ntev ntawm cov kab hluav taws xob theem nrab. Qhov saum npoo ntawm kev tsim kho yuav tsum yog nyob rau ntawm lub nqaj axis lossis slab nto, thiab cov pob qij txha yuav tsum zam. Qhov sib koom ua ke yuav tsum tau ruaj nrog ntoo boards lossis hlau mesh.
• Kev tsim kho kev sib koom tes yuav tsum tsis txhob nchuav mus txog thaum lub zog compressive ntawm cov pob zeb nyob rau hauv seem uas tau nchuav dhau los mus txog yam tsawg kawg 1.2 MPa. Ua ntej txuas ntxiv rau cov pob zeb, qhov saum npoo ntawm kev tsim kho yuav tsum tau roughened, ntab pob zeb tshem tawm, thiab ntxuav nrog dej. Ib txheej ntawm cov cement slurry yuav tsum tau siv, thiab tom qab ntawd nchuav yuav tsum txuas ntxiv mus. Ua tib zoo vibration yuav tsum tau siv los ua kom muaj kev sib raug zoo ntawm cov pob zeb tshiab thiab qub.

5. Poob ntaiv

• Rau kev kaw cov ntaiv, cov pob zeb yuav tsum tau nchuav los ntawm sab saum toj mus rau hauv qab, nrog lub vibrator tso los ntawm sab saum toj.
• Kev tsim kho cov pob qij txha: pob zeb rau cov ntaiv yuav tsum tau nchuav tas li. Rau ntau zaj dab neeg stairs, kev tsim kho cov pob qij txha yuav tsum muab tso rau ntawm ib feem peb ntawm cov ntaiv.

6. Khoov

• Tom qab cov pob zeb tau nchuav lawm, nws yuav tsum tau npog thiab watered tsis pub dhau 12 teev. Cov pob zeb yuav tsum tau khaws cia kom txaus, thiab lub sijhawm kho yuav tsum kav ntev li 7 hnub.

7. Tso cai sib txawv

• Axial Displacement: 5 hli
• Verticality: 8 hli
• Qhov siab: ± 10mm
• Ntu Dimensions: +8, -5 mm
• Nto Flatness: 8 hli
• Embedded yeeb nkab qhov chaw: 5 mm