Lub sij hawm pib ntawm qhov kev ntsuam xyuas hauv paus yuav tsum ua raws li cov hauv qab no:
(1) Lub zog ntawm cov pob zeb kuaj yuav tsum tsis txhob qis dua 70% ntawm lub zog tsim thiab yuav tsum tsis txhob qis dua 15MPa, siv txoj kev strain thiab acoustic transmission method rau kev kuaj;
(2) Siv cov txheej txheem drilling tseem ceeb rau kev sim, lub hnub nyoog ntawm cov pob zeb kuaj yuav tsum ncav cuag 28 hnub, los yog lub zog ntawm cov kev sim kho tau zoo nyob rau hauv tib yam kev mob yuav tsum ua kom tau raws li cov qauv tsim;
(3) Lub sijhawm so ua ntej kev ntsuas kev muaj peev xwm dav dav: xuab zeb hauv paus yuav tsum tsis pub tsawg dua 7 hnub, lub hauv paus silt yuav tsum tsis pub tsawg tshaj 10 hnub, cov av tsis sib haum xeeb yuav tsum tsis pub tsawg tshaj 15 hnub, thiab cov av saturated cohesive yuav tsum tsis txhob muaj. tsawg dua 25 hnub.
Cov av nkos khaws cov pawg yuav tsum ncua sijhawm so.
Cov txheej txheem xaiv rau pawg tshuaj ntsuam xyuas rau kev kuaj pom zoo:
(1) Piles nrog questionable tsim zoo;
(2) Cov kab uas muaj qhov txawv txav hauv lub hauv paus;
(3) Xaiv ib co chav kawm III pawg rau cov kabmob muaj peev xwm lees txais;
(4) Lub tog tsim tau txiav txim siab cov pawg tseem ceeb;
(5) Cov pawg sib txawv ntawm kev tsim kho;
(6) Nws raug nquahu kom xaiv ib yam nkaus thiab random raws li kev cai.
Thaum ua qhov kev lees paub, nws raug nquahu kom ua thawj qhov kev ntsuam xyuas kev ncaj ncees ntawm pawg pawg, ua raws li kev ntsuas kev muaj peev xwm.
Kev ntsuam xyuas kev ncaj ncees ntawm lub cev pawg yuav tsum tau ua tom qab kev khawb ntawm lub hauv paus qhov.
Kev ncaj ncees ntawm lub cev pawg tau muab faib ua plaub pawg: pawg I pawg, pawg II pawg, pawg III pawg, thiab pawg IV pawg.
Hom I pawg lub cev tsis zoo;
Chav Kawm II pawg muaj qhov tsis xws luag hauv pawg pawg, uas yuav tsis cuam tshuam rau lub cev muaj peev xwm ntawm pawg qauv;
Muaj qhov pom tseeb qhov tsis xws luag hauv pawg pawg ntawm pawg III pawg, uas muaj kev cuam tshuam rau lub cev muaj peev xwm ntawm pawg pawg;
Muaj cov teeb meem loj hauv pawg pawg ntawm pawg IV pawg.
Tus yam ntxwv tus nqi ntawm ntsug compressive bearing muaj peev xwm ntawm ib pawg yuav tsum tau npaum li 50% ntawm qhov kawg ntsug compressive bearing muaj peev xwm ntawm ib pawg.
Tus yam ntxwv tus nqi ntawm ntsug rub-tawm bearing muaj peev xwm ntawm ib pawg yuav tsum tau npaum li 50% ntawm qhov kawg ntsug rub-tawm bearing muaj peev xwm ntawm ib pawg.
Kev txiav txim siab ntawm tus yam ntxwv tus nqi ntawm kab rov tav bearing muaj peev xwm ntawm ib pawg: ua ntej, thaum pawg pawg tsis tso cai rau tawg los yog qhov kev txhawb zog ntawm cov cam khwb cia-hauv-qhov chaw pawg lub cev tsawg dua 0.65%, 0.75 npaug ntawm kab rov tav. tseem ceeb load yuav tsum tau coj;
Qhov thib ob, rau precast reinforced pob zeb pawg, steel piles, thiab cam khwb cia-nyob rau hauv-qhov chaw pawg nrog ib tug ntxiv qhov sib piv ntawm tsis tsawg tshaj li 0.65%, lub load coj mus rau lub kab rov tav hloov nyob rau hauv lub tsim pawg sab saum toj elevation yuav tsum tau noj li 0.75 zaug (kab rov tav. Kev hloov pauv tus nqi: 6 hli rau cov tsev rhiab rau kab rov tav hloov chaw, 10 hli rau cov tsev insensitive rau kab rov tav hloov chaw, ua tau raws li qhov yuav tsum tau tawg tiv thaiv ntawm lub cev pawg).
Thaum siv cov txheej txheem drilling, tus naj npawb thiab qhov chaw yuav tsum tau ua rau txhua pawg soj ntsuam raws li hauv qab no: pawg uas muaj txoj kab uas hla tsawg dua 1.2m tuaj yeem muaj 1-2 qhov;
Ib pawg nrog txoj kab uas hla ntawm 1.2-1.6m yuav tsum muaj 2 qhov;
Cov kab uas muaj txoj kab uas hla ntau dua 1.6m yuav tsum muaj 3 qhov;
Txoj haujlwm drilling yuav tsum sib npaug thiab sib npaug ntawm qhov sib txawv ntawm (0.15 ~ 0.25) D los ntawm qhov nruab nrab ntawm pawg.
Post lub sij hawm: Nov-29-2024