Installation ntawm Roadside Corrugated Beam Guardrails
1. Roadside corrugated beam guardrails raug faib ua Class A thiab Class S raws li lawv qhov cuam tshuam rau theem. Class S guardrails tau ntxiv dag zog thiab tsim nyog siv rau ntawm qhov tshwj xeeb ntawm kev txaus ntshai. Qhov chaw nruab nrab - mus rau - nruab nrab qhov sib nrug ntawm Chav S guardrail ncej yog 2m.
2. Txoj kev sib hloov ntawm txoj kev corrugated beam guardrails yuav tsum tsis txhob cia lub guardrail nto mus rau ntawm txoj kev loj kev tsim kho clearance txwv, thiab yuav tsum tsis txhob ho txo lub lateral lub ntiaj teb siab nyob rau sab ntug ntawm lub guardrail posts. Qhov kev ncua deb tsawg kawg nkaus los ntawm sab nrauv ntawm tus ncej mus rau ntug ntawm lub xub pwg nyom tau teev tseg raws li hauv qab no: thaum qhov dav ntawm lub ntiaj teb lub xub pwg yog 75cm, nws yuav tsum tsis pub tsawg tshaj 25cm; Thaum qhov dav ntawm lub ntiaj teb lub xub pwg yog 50cm, nws yuav tsum tsis txhob tsawg dua 14cm.
3. Qhov kawg tsim ntawm txoj kev guardrails: qhov pib thiab xaus ntawm txoj kev corrugated beam guardrails yuav tsum tau kho. Lub taub hau tuaj yeem tsim los ua hom av thauj tog rau nkoj lossis hom taub hau puag ncig. Ib qho kev hloov pauv yuav tsum tau muab nruab nrab ntawm qhov nruab nrab ntawm qhov nruab nrab ntawm lub taub hau kawg nyob rau hauv qhov kev taw qhia ntawm kev khiav tsheb thiab cov qauv ntawm tus neeg saib xyuas. Lub downstream kawg nyob rau tib txoj kev ntawm kev khiav tsheb tuaj yeem muab tso rau hauv ib txoj kab ncaj nraim nrog cov qauv ntawm cov guardrail.
4. Tus tiv thaiv - thaiv thaiv ntawm txoj kev corrugated beam guardrail yog ib qho kev thauj khoom -cov kabmob ntawm cov nqaj corrugated thiab ncej. Nws yog qhov tsim nyog rau cov ntu ntawm txoj kev uas cov hom tsheb hauv cov tsheb khiav yog qhov nyuaj, thiab muaj kev txhawj xeeb tias cov tsheb sib tsoo yuav tau daig ntawm cov ncej guardrail; los yog rau cov ntu ntawm txoj kev uas txoj kab thaiv muaj qhov cuam tshuam tsis zoo rau txoj kev sib tsoo tsheb. Guardrail tiv thaiv- thaiv thaiv tau muab faib ua ob hom: Hom A thiab Hom B. Hom A yog tsim rau cov ncej puag ncig.
5. Txoj kev guardrails yuav tsum tau ntsia rau hauv lub ntiaj teb lub xub pwg nyom. Thaum guardrail posts ntsib cov hauv paus mos, lawv yuav tsum tau muab tso rau hauv pob zeb hauv paus. Yog tias ua tau, yuav tsum tau siv cov guardrail hloov pauv.
Kev teeb tsa ntawm Corrugated Beam Guardrails hauv Central Median
1. Corrugated beam guardrails ntsia rau hauv nruab nrab nruab nrab yog muab faib ua Am thiab Sm qib raws li lawv qhov cuam tshuam kev ntsuas. Sm qib guardrails tau ntxiv dag zog thiab tsim nyog rau thaj chaw nrog cov qauv tseem ceeb hauv nruab nrab nruab nrab. Rau cov seem ntawm txoj kev uas yuav tsum tau txwv kev hloov chaw ntawm lub guardrail, muaj ob hom qauv: cais thiab ua ke. Cov guardrails sib cais yog tsim rau cov ntu ntawm txoj kev uas muaj qhov nruab nrab dav dav, ntau yam khoom hauv nruab nrab, thiab cov kav dej faus hauv qab nws. Combined guardrails yog haum rau txoj kev seem nrog nqaim nruab nrab, tsawg cov qauv nyob rau hauv nruab nrab, los yog tsawg dua faus pipelines.
2. Qhov kev hloov pauv ntawm lub corrugated beam guardrail rau qhov nruab nrab yuav tsum txiav txim siab raws li qhov dav thiab tus ntoo khaub lig-sectional shape of the median. Thaum siv cov txheej txheem cais, qhov chaw tiv thaiv yuav tsum tsis txhob cuam tshuam rau qhov chaw pej xeem. Nyob rau hauv txoj kev tsim kho clearance txwv.
3. Thaum cais cov guardrails raug ntsia rau hauv nruab nrab strips nrog curbs, corrugated beam guardrails yuav tsum muaj anti- thaiv thaiv. Tsis tas li ntawd, thaum qhov kev tso kawm nyob rau hauv qhov nruab nrab strip yog txwv, qhov tsawg kawg nkaus C- tus nqi los ntawm corrugated beam guardrail nto mus rau curb nto yuav txo tau mus rau 25cm.
4. Thaum sib xyaw corrugated beam guardrails siv nyob rau hauv nruab nrab sawb, lub centerline ntawm lub guardrail posts coincides nrog txoj kev centerline. Thaum muaj cov qauv lossis cov kav dej hauv av hauv txoj kev hauv nruab nrab, cov kab nruab nrab ntawm cov guardrail posts tuaj yeem hloov mus rau ib sab, lossis hom sib xyaw ua ke tuaj yeem hloov mus rau cais cov guardrails.
5. Lub corrugated beam guardrail muaj cov ncej, kab rov tav kab, corrugated beam, thiab fasteners. Cov ncej tuaj yeem ua los ntawm kev sib hloov lossis channel steel. Kab rov tav kab teeb muaj ob lub channel steels, ntsia rau ntawm ob sab ntawm cov ncej. Ob qhov kawg ntawm kab kab kab rov tav txuas nrog corrugated beam panels. Qhov siab tshaj plaws ua ke dav ntawm ob kab corrugated yog 100cm, uas tuaj yeem hloov kho raws li qhov dav ntawm lub hauv paus divider.
6. Cov Guardrails ntsia rau ntawm qhov pib, qhov kawg, thiab qhov qhib ntawm lub hauv paus divider yuav tsum muaj kev kho mob kawg. Rau cais nruab corrugated beam guardrails, qhov kawg yuav tsum tau ua raws li kev sib raug zoo ntawm lub hauv paus divider. Nyob rau hauv ib qho ntev (piv txwv li, 16m), corrugated beam guardrail maj nroos rau sab hauv los ntawm ob qho tib si kab mus rau lub divider, feem ntau nyob rau hauv ib tug parabolic duab. Qhov kev ncua deb ntawm cov ncej yog 2m, thiab lub vojvoog ntawm qhov sib npaug ntawm qhov kawg yuav tsum tau ua raws li qhov sib txawv ntawm qhov qhib qhov qhib, feem ntau 25cm.
Lub corrugated beam guardrail muaj cov ncej, kab rov tav kab, corrugated beam, thiab fasteners. Cov ncej tuaj yeem ua los ntawm cov kab los yog channel steel, ntsia ntawm ob sab ntawm cov ncej. Thib peb, cov guardrails nyob rau hauv cheeb tsam daim duab peb sab ntawm lub tsheb sib txawv cov ntsiab lus yuav tsum tau tsim nyob rau hauv tib txoj kev raws li txoj kev corrugated beam guardrails thiab yuav tsum tau nteg tawm raws li kev sib tw thiab topography ntawm lub triangular cheeb tsam. Qhov tsawg kawg nkaus qhov ntev rau kev teeb tsa yog raws li hauv qab no: kev siv zog ntxiv (Class S) guardrails yuav tsum siv li ntawm 8 meters ntawm ob qho kawg ntawm sab ze tshaj plaws rau txoj kev loj loj thiab tsis pub dhau 8 meters ntawm ob qho kawg ntawm sab ze tshaj plaws ntawm txoj kev. Rau spans ntawm Class A guardrails yuav tsum tau ntsia nruab nrab ntawm lub reinforced guardrails, thiab cov guardrails ntawm ob sab ntawm daim duab peb sab cheeb tsam yuav tsum tau txuas nrog rounded xaus. Cov pads sib tsoo yuav tsum tau muab tso rau hauv qhov chaw txaus ntshai daim duab peb sab.
Qhov nruab nrab qhov siab ntawm crossbeam ntawm corrugated beam guardrail, ntsuas los ntawm txoj kev nto, yog 60cm los ntawm qhov nruab nrab ntawm lub qhov txuas txuas. Thaum muaj qhov curb tam sim no, qhov nruab nrab qhov siab ntawm crossbeam, ntsuas los ntawm sab saum toj ntawm qhov curb, kuj tseem yog 60cm los ntawm qhov nruab nrab ntawm qhov txuas txuas. Thaum lub corrugated beam guardrail muaj anti- thaiv thaiv, nws qhov siab qhov nruab nrab tseem tsis hloov. Cov ncej ntawm corrugated beam guardrail feem ntau yog faus rau hauv av hauv paus, thiab qhov faus qhov tob yog teev raws li hauv qab no:
1. Thaum lub guardrail ncej yog faus rau hauv av thiab tsis muaj curb, qhov faus qhov tob yuav tsum tsis txhob tsawg tshaj li 110cm.
2. Thaum lub guardrail ncej yog faus rau hauv av thiab muaj ib tug curb, qhov faus qhov tob yuav tsum tsis txhob tsawg tshaj li 125cm. Thaum siv cov corrugated beam guardrail yog siv nyob rau hauv nruab nrab nruab nrab sawb, lub embedment qhov tob ntawm cov ncej yuav tsum tsis txhob tsawg tshaj li 110cm.
Qhov thib ob, lub hauv paus pob zeb embedment txoj kev yuav siv tau rau guardrail posts nyob rau hauv cov xwm txheej hauv qab no:
1. Cov ntawv tshaj tawm tau muab tso rau hauv qhov chaw uas tsav tsheb tsis yooj yim, xws li txuas hniav, txoj kev hla, lossis culverts.
2. Muaj cov kav dej hauv av lossis cov pob zeb hauv qab ntawm cov ncej.
3. Lwm yam xwm txheej tshwj xeeb.
Qhov tob tob ntawm cov ncej hauv pob zeb yuav tsum tsis pub tsawg dua 40cm. Txhawm rau kom yooj yim ntawm kev txij nkawm, txoj kev sib txuas ntawm flange tuaj yeem siv tau. Qhov ntev ntawm lub hauv paus pob zeb thiab qhov sib txuas lub zog ntawm flanges yuav tsum tau txiav txim siab los ntawm kev xam raws li qhov sib txawv. Thaum cov xwm txheej tso cai, cov ncej guardrail hloov tau yuav tsum tau siv.