Cov ntsiab lus tseem ceeb rau kev tswj kom zoo ntawm kev sib sib zog nqus lub hauv paus pit waterproofing kev tsim kho

Ntsiab lus: Deep foundation pit waterproofing; khaws cov qauv; waterproof txheej; cov ntsiab lus tseem ceeb ntawm daim npav tswj

Nyob rau hauv lub hauv paus tob hauv cov dej num, kev tsim kho dej kom raug yog qhov tseem ceeb rau tag nrho cov qauv, thiab tseem yuav muaj kev cuam tshuam zoo rau kev pabcuam lub neej ntawm lub tsev. Yog li ntawd, cov dej tsis muaj dej nyob hauv txoj haujlwm tseem ceeb heev hauv cov txheej txheem tsim kho ntawm lub hauv paus tob. Daim ntawv no tsuas yog muab cov txheej txheem sib sib zog nqus hauv qhov kev tsim kho cov yam ntxwv ntawm Nanning Metro thiab Hangzhou South Station lub tsev cov haujlwm los kawm thiab txheeb xyuas qhov sib sib zog nqus lub hauv paus qhov dej tsis zoo, vam tias yuav muab qee yam nqi siv rau cov haujlwm zoo sib xws yav tom ntej.

1. Retaining qauv waterproofing

(I) Cov yam ntxwv dej nres ntawm ntau yam kev tuav pov hwm

Qhov ntsug tuav qauv nyob ib ncig ntawm lub qhov tob hauv lub hauv paus feem ntau hu ua tus qauv tuav. Cov qauv khaws cia yog qhov yuav tsum tau ua ua ntej kom muaj kev nyab xeeb kev khawb ntawm qhov tob hauv paus. Muaj ntau ntau yam qauv siv nyob rau hauv lub hauv paus pits sib sib zog nqus, thiab lawv txoj kev tsim kho, txheej txheem thiab kev siv tshuab siv yog txawv. Cov teebmeem dej-tso ua tiav los ntawm ntau txoj kev tsim kho tsis zoo ib yam, saib Table 1 kom paub meej

(II) Kev tiv thaiv kev tiv thaiv dej rau hauv av-txuas phab ntsa

Lub hauv paus kev tsim kho ntawm Nanhu Chaw Nres Nkoj ntawm Nanning Metro tau txais cov qauv hauv av txuas nrog. Cov phab ntsa hauv av txuas nrog cov nyhuv dej tsis zoo. Cov txheej txheem kev tsim kho zoo ib yam li cov dhuav pawg. Cov ntsiab lus hauv qab no yuav tsum tau sau tseg

1. Lub ntsiab lus tseem ceeb ntawm kev tswj dej tsis zoo yog nyob rau hauv kev sib koom ua ke ntawm ob phab ntsa. Yog tias cov ntsiab lus tseem ceeb ntawm kev kho kev sib koom ua ke tuaj yeem tuav tau, cov nyhuv dej tsis zoo yuav ua tiav.

2. Tom qab qhov zawj tau tsim, lub ntsej muag kawg ntawm cov pob zeb uas nyob ib sab yuav tsum tau ntxuav thiab txhuam mus rau hauv qab. Tus naj npawb ntawm cov txhuam hniav yuav tsum tsis pub tsawg tshaj 20 zaug kom txog thaum tsis muaj av nkos ntawm phab ntsa txhuam.

3. Ua ntej lub tawb steel yuav txo qis, ib lub raj me me tau nruab rau ntawm qhov kawg ntawm lub tawb steel raws phab ntsa kev taw qhia. Thaum lub sij hawm lub installation txheej txheem, qhov zoo ntawm qhov sib koom ua ke yog nruj me ntsis tswj los tiv thaiv kom tsis txhob txhaws ntawm cov kav dej. Thaum lub sij hawm excavation ntawm lub hauv paus pit, yog hais tias cov dej to nyob rau hauv lub phab ntsa sib txuas, grouting yog ua los ntawm cov me me conduit.

(III) Waterproofing tsom xam ntawm cam khwb cia-nyob rau hauv-qhov chaw pawg tsim

Qee qhov kev tuav pov hwm ntawm Hangzhou South Chaw nres tsheb txais yuav daim ntawv ntawm dhuav cam khwb cia-hauv-qhov chaw pawg + high-pressure rotary dav hlau pawg kab hlau rhuav. Kev tswj cov kev tsim kho kom zoo ntawm lub siab-siab rotary dav hlau pawg dej-nres cov ntaub thaiv thaum lub sij hawm tsim kho yog lub ntsiab lus tseem ceeb ntawm waterproofing. Thaum lub sij hawm kev tsim kho ntawm cov dej-stop curtains, pawg sib nrug, slurry zoo thiab txhaj tshuaj yuav tsum nruj me ntsis tswj kom ntseeg tau tias ib tug kaw waterproof siv nyob ib ncig ntawm lub cam khwb cia-nyob rau hauv-qhov chaw pawg kom ua tau ib tug zoo waterproofing nyhuv.

2. Foundation pit excavation tswj

Thaum lub hauv paus txheej txheem excavation, cov txheej txheem khaws cia tuaj yeem xau vim kev kho tsis raug ntawm cov txheej txheem khaws cia. Txhawm rau kom tsis txhob muaj xwm txheej tshwm sim los ntawm cov dej xau ntawm cov qauv khaws cia, cov ntsiab lus hauv qab no yuav tsum tau muab sau tseg thaum lub hauv paus txheej txheem excavation:

1. Thaum lub sij hawm excavation, dig muag excavation yog nruj me ntsis txwv tsis pub. Ua tib zoo saib xyuas cov kev hloov pauv ntawm cov dej theem sab nraud ntawm lub hauv paus pit thiab qhov seepage ntawm cov qauv tuav. Yog hais tias dej gushing tshwm sim thaum lub sij hawm excavation, lub gushing txoj hauj lwm yuav tsum tau backfilled nyob rau hauv lub sij hawm los tiv thaiv expansion thiab instability. Kev khawb tsuas tuaj yeem txuas ntxiv tom qab siv txoj kev sib raug. 2. Cov dej me me me me yuav tsum tau ua raws sijhawm. Ntxuav cov pob zeb ua kom zoo nkauj, siv lub zog ceev ceev-siv cov cement los kaw cov phab ntsa, thiab siv cov kav dej me me txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nthuav dav. Tom qab lub sealing cement nce mus txog lub zog, siv lub tshuab grouting nrog grouting siab los muab cov kav dej me me.

3. Waterproofing ntawm lub ntsiab qauv

Waterproofing ntawm cov qauv tseem ceeb yog qhov tseem ceeb tshaj plaws ntawm kev sib sib zog nqus lub hauv paus pit waterproofing. Los ntawm kev tswj hwm cov hauv qab no, cov qauv tseem ceeb tuaj yeem ua tiav cov dej tsis zoo.

(I) Kev tswj kom zoo

Qhov zoo ntawm pob zeb yog qhov tsim nyog los xyuas kom meej cov txheej txheem waterproofing. Kev xaiv cov khoom siv raw thiab tus tsim qauv ntawm qhov sib xyaw ua ke kom ntseeg tau cov kev txhawb nqa ntawm cov pob zeb zoo.

Kev sib sau nkag mus rau hauv qhov chaw yuav tsum tau tshuaj xyuas thiab lees paub raws li "Cov Qauv rau Kev Ua Zoo thiab Kev Tshuaj Xyuas Cov Txheej Txheem ntawm Cov Xuab Zeb thiab Pob Zeb rau Cov Khoom Siv Txheej Txheem" ​​rau cov ntsiab lus av nkos, cov ntsiab lus av nkos, cov ntsiab lus zoo li koob, particle grading, thiab lwm yam. cov xuab zeb cov ntsiab lus yog tsawg li tsawg tau raws li qhov ua tau raws li qhov ua tau raws li lub zog thiab kev ua haujlwm, kom muaj cov coarse aggregate txaus hauv cov pob zeb. Qhov sib xyaw ua ke sib xyaw ua ke yuav tsum ua kom tau raws li qhov xav tau ntawm lub zog ntawm cov qauv tsim qauv, ua kom muaj zog nyob rau hauv ntau qhov chaw, thiab ua kom cov pob zeb sib tov muaj cov khoom ua haujlwm xws li flowability uas yoog raws li kev tsim kho. Cov pob zeb sib tov yuav tsum yog ib qho zoo sib xws, yooj yim rau kev cog lus thiab kev sib cais, uas yog lub hauv paus rau kev txhim kho cov pob zeb zoo. Yog li ntawd, lub workability ntawm pob zeb yuav tsum tau guaranteed tag nrho.

(II) Kev tswj kev tsim kho

1. Kev kho pob zeb. Kev tsim kho kev sib koom ua ke yog tsim ntawm kev sib tshuam ntawm cov pob zeb tshiab thiab qub. Txoj kev kho roughening ua tau zoo ua rau thaj chaw sib txuas ntawm cov pob zeb tshiab thiab qub, uas tsis tsuas yog txhim kho qhov txuas ntxiv ntawm cov pob zeb, tab sis kuj pab cov phab ntsa tiv thaiv kev khoov thiab shear. Ua ntej pouring qhob, cov slurry huv si kis tau thiab ces coated nrog cement-based anti-seepage crystalline khoom. Cement-based anti-seepage crystalline cov ntaub ntawv tuaj yeem sib txuas cov qhov khoob ntawm pob zeb thiab tiv thaiv cov dej sab nraud los ntawm kev nkag mus.

2. Kev txhim kho steel phaj waterstop. Lub waterstop steel phaj yuav tsum tau muab faus rau hauv nruab nrab ntawm cov txheej txheem txheej txheej, thiab cov khoov ntawm ob qho kawg yuav tsum fim cov dej-ntsej muag. Lub waterstop steel phaj ntawm kev tsim kho kev sib koom ua ke ntawm sab nrauv phab ntsa tom qab-casting siv yuav tsum tau muab tso rau hauv nruab nrab ntawm cov pob zeb sab nrauv phab ntsa, thiab qhov chaw ntsug thiab txhua kab rov tav waterstop steel phaj yuav tsum tau welded nruj nreem. Tom qab qhov siab ntawm kab rov tav steel phaj waterstop yog txiav txim siab, ib txoj kab yuav tsum tau kos rau ntawm qhov kawg ntawm lub phaj steel waterstop raws li qhov siab tswj qhov taw tes ntawm lub tsev kom nws sab saud ncaj.

Hlau daim hlau yog tsau los ntawm steel bar welding, thiab oblique steel tuav yog welded rau sab saum toj formwork stick rau kho. Luv steel tuav yog welded nyob rau hauv lub steel phaj waterstop los txhawb lub steel phaj. Qhov ntev yuav tsum yog raws li qhov tuab ntawm cov pob zeb pob zeb phab ntsa steel mesh thiab yuav tsum tsis txhob ntev dhau los tiv thaiv kev tsim cov dej seepage raws li cov kab hlau luv. Cov kab hlau luv luv feem ntau sib nrug tsis tshaj 200mm sib nrug, nrog rau ib qho teeb tsa ntawm sab laug thiab sab xis. Yog tias qhov sib nrug me dhau, tus nqi thiab engineering ntim yuav nce ntxiv. Yog tias qhov sib nrug loj dhau lawm, lub phaj steel waterstop yog ib qho yooj yim rau khoov thiab yooj yim deform vim kev co thaum pouring qhob.

Cov hlau phaj pob qij txha yog welded, thiab lub ceg ntev ntawm ob lub phaj hlau tsis pub tsawg tshaj 50 hli. Ob qhov kawg yuav tsum tau welded tag nrho, thiab qhov siab qhov siab tsis tsawg tshaj li qhov tuab ntawm cov hlau phaj. Ua ntej welding, kev sim welding yuav tsum tau ua los kho cov kev ntsuas tam sim no. Yog tias qhov tam sim no loj dhau, nws yooj yim rau hlawv lossis txawm tias hlawv los ntawm cov phaj hlau. Yog tias qhov tam sim no me me dhau, nws nyuaj rau pib lub arc thiab vuam tsis ruaj.

3. Kev txhim kho cov dej-ntws dej-txhim kho cov hlua khi. Ua ntej nteg cov dej-dej swelling waterstop strip, cheb cov scum, plua plav, khib nyiab, thiab lwm yam, thiab nthuav tawm lub hauv paus tawv. Tom qab kev tsim kho, ncuav hauv av thiab kab rov tav kev tsim cov pob qij txha, nthuav cov dej-sloj waterstop strip raws qhov txuas ntxiv ntawm kev tsim kho, thiab siv nws tus kheej adhesiveness los lo ncaj qha rau hauv nruab nrab ntawm kev tsim kho. Kev sib koom ua ke yuav tsum tsis pub tsawg dua 5 cm, thiab tsis muaj qhov sib cais yuav tsum tau tso tseg; rau kev tsim kho ntsug sib koom ua ke, qhov chaw ntiav qhov zawj yuav tsum tau tshwj tseg ua ntej, thiab cov kav dej yuav tsum tau muab tso rau hauv qhov tshwj xeeb zawj; Yog tias tsis muaj qhov tshwj tseg, cov ntsia hlau muaj zog tuaj yeem siv los kho, thiab siv nws tus kheej-adhesiveness los lo ncaj qha rau ntawm kev tsim kho kev sib txuas, thiab sib npaug sib npaug thaum nws ntsib cov ntawv cais. Tom qab cov dej ntws tau ruaj khov, tshem tawm cov ntawv cais tawm thiab ncuav lub pob zeb.

4. Kev co pob zeb. Lub sij hawm thiab txoj kev ntawm kev co pob zeb yuav tsum raug. Nws yuav tsum tau vibrated densely tab sis tsis dhau-vibrated los yog leaked. Thaum lub sij hawm vibration txheej txheem, lub mortar splashing yuav tsum tau txo, thiab cov mortar splashed nyob rau hauv lub puab nto ntawm formwork yuav tsum tau muab ntxuav nyob rau hauv lub sij hawm. Cov ntsiab lus ntawm cov pob zeb vibration tau muab faib los ntawm nruab nrab mus rau ntug, thiab cov pas nrig yog sib npaug, txheej los ntawm txheej, thiab txhua feem ntawm cov pob zeb sib tov yuav tsum tau nchuav tas li. Lub sij hawm vibration ntawm txhua qhov vibration point yuav tsum yog raws li cov pob zeb nto yog ntab, tiaj tus, thiab tsis muaj npuas ntxiv tawm, feem ntau yog 20-30s, kom tsis txhob muaj kev sib cais los ntawm kev vibration ntau dhau.

Kev sib xyaw ua ke yuav tsum tau nqa tawm hauv cov khaubncaws sab nraud povtseg thiab tsis tu ncua. Lub ntxig vibrator yuav tsum tau muab tso sai sai thiab rub tawm maj mam, thiab cov ntsiab lus ntxig yuav tsum tau muab sib npaug thiab muab tso rau hauv lub paj paj. Lub vibrator rau vibrating txheej sab sauv ntawm cov pob zeb yuav tsum tau muab tso rau hauv qis txheej ntawm pob zeb los ntawm 5-10cm los xyuas kom meej tias ob txheej ntawm cov pob zeb ua ke ruaj khov. Cov kev taw qhia ntawm kev vibration sequence yuav tsum yog qhov sib txawv raws li qhov ua tau rau cov kev taw qhia ntawm cov pob zeb khiav, kom cov pob zeb vibrated yuav tsis nkag mus rau cov dej dawb thiab npuas. Lub vibrator yuav tsum tsis txhob kov cov embedded qhov chaw thiab formwork thaum lub sij hawm vibration txheej txheem.

5. Kev tu. Tom qab cov pob zeb tau nchuav lawm, nws yuav tsum tau npog thiab watered li ntawm 12 teev kom cov pob zeb moist. Lub sijhawm txij nkawm feem ntau tsis pub tsawg tshaj 7 hnub. Rau qhov chaw uas tsis tuaj yeem watered, tus neeg sawv cev kho yuav tsum tau siv rau kev saib xyuas, lossis cov yeeb yaj kiab tiv thaiv yuav tsum tau txau ncaj qha rau ntawm cov pob zeb tom qab demolding, uas tuaj yeem tsis tsuas yog zam kev txij nkawm, tab sis kuj txhim kho cov kav ntev.

4. Kev tso dej tsis zoo

Txawm hais tias lub hauv paus tob hauv qhov dej tsis muaj dej tsuas yog ua raws li kev ua vaj tse tus kheej-waterproofing, tso cov txheej txheem dej tsis zoo kuj tseem ua lub luag haujlwm tseem ceeb hauv kev sib sib zog nqus lub hauv paus qhov dej tsis zoo. Kev tswj hwm kev tsim kho kom zoo ntawm cov txheej txheem dej tsis zoo yog lub ntsiab lus tseem ceeb ntawm kev tsim cov dej tsis zoo.

(I) Base deg kho

Ua ntej tso cov txheej txheem dej tsis zoo, lub hauv paus saum npoo yuav tsum tau kho kom zoo, feem ntau yog kev kho kom haum thiab dej seepage. Yog tias muaj dej seepage ntawm lub hauv paus saum npoo, qhov xau yuav tsum tau kho los ntawm kev ntsaws. Lub hauv paus kho yuav tsum huv si, tsis muaj kuab paug, dej tsis muaj dej, thiab tsis muaj dej.

(II) Cov txheej txheem dej tsis zoo

1. Cov dej tsis muaj dej yuav tsum muaj daim ntawv pov thawj Hoobkas, thiab tsuas yog cov khoom tsim nyog tuaj yeem siv tau. Lub hauv paus ntawm kev tsim dej tsis zoo yuav tsum tiaj tus, qhuav, huv si, ruaj khov, thiab tsis muaj xuab zeb lossis tev. 2. Ua ntej txheej txheej waterproof yuav tsum tau kho. Cov ces kaum yuav tsum tau ua rau hauv arcs. Txoj kab uas hla ntawm lub ces kaum sab hauv yuav tsum siab tshaj 50 hli, thiab txoj kab uas hla ntawm lub ces kaum sab nrauv yuav tsum siab tshaj 100 hli. 3. Cov txheej txheem dej tsis zoo yuav tsum tau ua raws li cov lus qhia tshwj xeeb thiab cov qauv tsim. 4. Txheej txheem kev tsim kho txoj haujlwm, txiav txim siab qhov siab ntawm cov pob zeb ua pob zeb, thiab ua cov kev kho dej tsis zoo ntawm qhov kev tsim kho. 5. Tom qab lub hauv paus txheej txheej tsis muaj dej pov tseg, txheej txheej tiv thaiv yuav tsum tau tsim nyob rau hauv lub sij hawm kom tsis txhob scalding thiab punncturing lub waterproof txheej thaum lub sij hawm steel bar vuam thiab ua puas lub waterproof txheej thaum lub sij hawm ua vaj tse vibrating.

V. Xaus

Kev nkag mus thiab kev tiv thaiv dej tsis zoo ntawm cov dej num hauv av hnyav cuam tshuam rau tag nrho kev tsim kho zoo ntawm cov qauv, tab sis nws tsis tuaj yeem zam tau. Peb feem ntau qhia meej lub tswv yim tias "tsim yog qhov chaw, cov ntaub ntawv yog lub hauv paus, kev tsim kho yog qhov tseem ceeb, thiab kev tswj hwm yog qhov lav". Hauv kev tsim kho cov dej tsis zoo, kev tswj xyuas nruj ntawm kev tsim kho ntawm txhua tus txheej txheem thiab kev tswj hwm kev tiv thaiv thiab kev tswj xyuas yuav ua tiav cov hom phiaj xav tau.