Corrugated beam guardrails feem ntau yog cais raws li lawv qhov chaw teeb tsa thiab theem kev cuam tshuam, raws li qhia hauv cov lus hauv qab no. Raws li qhov chaw teeb tsa, lawv tuaj yeem muab faib ua txoj kev guardrails thiab nruab nrab guardrails. Raws li kev cuam tshuam rau theem, lawv tuaj yeem muab faib ua Class A thiab Class S (Am thiab Sm qhia kev teeb tsa hauv nruab nrab). Class S guardrails tau ntxiv dag zog thiab tsim nyog rau kev siv rau ntawm qhov chaw muaj kev phom sij tshwj xeeb, thaum Class A yog siv rau txoj kev loj.
Roadside Corrugated Beam Guardrails
(1) Transverse Layout
Txoj kev sib hloov ntawm txoj kev corrugated beam guardrails yuav tsum tsis txhob cia lub guardrail nto mus rau hauv txoj kev loj kev tsim kho clearance txwv, thiab yuav tsum tsis txhob ho txo lub lateral lub ntiaj teb siab nyob rau sab nrauv ntawm lub guardrail posts. Qhov kev ncua deb tsawg kawg nkaus ntawm sab nrauv ntawm ncej mus rau ntug ntawm lub xub pwg nyom yog: tsis pub tsawg tshaj 25cm thaum lub xub pwg dav yog 75cm; thiab tsis tsawg dua 14cm thaum lub xub pwg dav yog 50cm.
(2) Kev kho mob kawg
Cov ntsiab lus pib thiab xaus ntawm txoj kev corrugated beam guardrails yuav tsum tau kho. Qhov kawg ntawm txoj kev guardrails tuaj yeem sib npaug los yog thauj tog rau nkoj. Nyob rau theem pib ntawm kev tsim kho txoj kev loj hauv kuv lub teb chaws, puag ncig - taub hau guardrail xaus tau siv, txuas nrog rau cov qauv ntawm cov neeg saib xyuas los ntawm ntu kev hloov pauv. Qhov kev hloov pauv no feem ntau yog parabolic, nrog cov posts maj mam hloov mus rau sab nraud thaum tuav qhov siab tas li. Qhov kev ncua deb ntawm cov ncej ze ntawm qhov kawg tau nce mus txog 2 meters. Pob zeb hauv paus thiab cable- nyob twj ywm anchors tau siv; txoj kev no yog hu ua kawg-beam extension, nrog round-headed beams. Hom kawg no tau dav siv nyob txawv teb chaws vim nws yooj yim rau kev tsim thiab nruab, thiab muab kev taw qhia zoo ntawm kev sib tsoo me me. Txawm li cas los xij, yog tias qhov tawm ntawm - ntawm - tswj lub tsheb sib tsoo lub taub hau- thaum kawg, lub guardrail tuaj yeem nkag mus rau hauv lub cev lub tsheb. Yog li ntawd, hauv av-anchored kawg kawg tau txais yuav. Cov kawg no txuas ntxiv maj mam mus rau hauv av los ntawm lub kaum sab xis ntawm lub nqaj thiab yog khi rau qhov kawg nrog lub hauv paus pob zeb. Hauv lub taub hau- ntawm kev sib tsoo, qhov tawm - ntawm - tswj lub tsheb yuav nce mus rau lub kaum sab xis corrugated kom nqus tau lub zog. Nyob rau hauv ib sab kev sib tsoo, nws kuj muab kev taw qhia zoo.
Qhov kawg ntawm lub guardrail muaj cov kev kho mob sib txawv nyob rau hauv cov kev taw qhia ntawm cov tsheb thauj mus los thiab cov dej ntws hauv cov dej ntws ntawm cov kev taw qhia. Cov kev kho mob kawg uas tau piav qhia saum toj no yog hais txog qhov kawg ntawm cov dej ntws mus rau hauv cov kev taw qhia uas yuav los tom ntej. Lub downstream kawg nyob rau hauv lub khiav ntawm txoj kev khiav tsheb yog nteg nyob rau hauv ib tug ncaj kab nrog rau tus qauv seem ntawm guardrail. Lub downstream kawg yog feem ntau kho raws li ib puag ncig - taub hau kawg beam. Thaum lub tsheb mus txog qhov kawg ntawm qhov kawg, kev teeb tsa guardrail tiav, thiab kev nyab xeeb ntawm txoj kev yog suav tias yog tsawg heev.
(3) Kev tsim kho ntawm kev tiv thaiv - thaiv thaiv
Kev tiv thaiv - thaiv thaiv ntawm txoj kev corrugated beam guardrail yog cov khoom thauj -cov kabmob ntawm cov nqaj corrugated thiab cov ncej, thiab tuaj yeem tsim tau siv ntau hom hlau. Nws tuaj yeem muab faib ua ob hom: Hom A thiab Hom B. Hom A yog haum rau cov ncej puag ncig thiab yog cov qauv hexagonal; Hom B yog haum rau cov ncej channel lossis lwm yam steel ncej. Ntxiv los tiv thaiv- kev sib tsoo thaiv ntawm cov kab corrugated thiab cov ncej muaj ntau yam zoo:
① Cov kev tiv thaiv- kev sib tsoo thaiv nws tus kheej ua lub zog- nqus cov txheej txheem, tso cai rau tus neeg saib xyuas kom maj mam deform raws li qhov cuam tshuam, pab txhawb kev nqus lub zog thiab txo cov neeg raug mob.
② Kev tiv thaiv - kev sib tsoo thaiv, kho ntawm tus ncej thiab cov kab corrugated, tshem tawm cov nqaj ntawm tus ncej. Thaum muaj kev sib tsoo, qhov tawm ntawm - ntawm - tswj lub tsheb yuav tsis muaj nws lub log pem hauv ntej daig ntawm tus ncej vim tias lub nqaj nyob ze rau nws.
③ Kev tiv thaiv- thaiv kev sib tsoo ua rau muaj kev ua haujlwm tag nrho ntawm lub guardrail, faib cov kev cuam tshuam quab yuam thoob plaws qhov dav dav, ua rau muaj kev cuam tshuam kev ntxhov siab ntau dua, kev sib tsoo zoo dua, txhim kho kev taw qhia tsheb, thiab ntxiv dag zog rau kev tiv thaiv tag nrho.
④ Thaum tiv thaiv - thaiv kev sib tsoo raug teeb tsa rau ntawm ntu nrog cov kab thaiv, qhov kev ncua deb ntawm cov kab corrugated thiab qhov chaw thaiv tau txo qis, txo qis lossis txawm tias tshem tawm cov kev cuam tshuam tsis zoo ntawm lub guardrail tshwm sim los ntawm kev tawm ntawm - ntawm - tswj lub tsheb thaws tom qab tsoo txoj kab thaiv.
(4) Tom qab installation
Txoj kev guardrail posts yuav tsum tau ntsia rau hauv cov khoom earthen xub pwg nyom. Kev sib cuam tshuam ntawm cov ncej thiab cov av hauv av ua rau cov ncej khoov thiab deform, thaum cov av compresses thiab deforms; qhov no yog ib feem ntawm lub guardrail lub zog nqus txheej txheem. Txawm li cas los xij, nyob rau hauv peb qhov xwm txheej - qhov twg cov guardrail posts tsis tuaj yeem tsav mus rau hauv choj, txoj kev hla, culverts, los yog qhov twg muaj cov kav dej hauv av lossis cov pob zeb hauv qab ntawm tus ncej- cov ncej guardrail yuav tsum tau muab tso rau hauv cov hauv paus pob zeb. Yog tias ua tau, yuav tsum tau siv cov guardrail hloov pauv.
Muaj peb txoj hauv kev rau kev txhim kho guardrail ncej hauv pob zeb: ib qho yog ua ntej - tho qhov hauv lub hauv paus pob zeb, sau lawv nrog cov xuab zeb tuab tom qab muab tso rau, thiab khi rau saum thiab hauv qab nrog asphalt. Thaum muaj kev sib tsoo, tus ncej tuaj yeem deform mus rau qee qhov yam tsis muaj kev puas tsuaj rau lub hauv paus, thiab kev hloov pauv kuj yooj yim dua. Lwm hom siv flange puag nrog bolted kev sib txuas. Lub flange muaj ib lub qhov elongated; Thaum muaj kev sib tsoo, lub flange yuav hloov me ntsis raws lub qhov elongated, kho yooj yim yog tias cov thauj tog rau nkoj bolts tsis puas. Ib hom thib peb siv cov cuab yeej hloov pauv kev nyab xeeb kev nyab xeeb. Cov cuab yeej no yog tsim rau cov ncej puag ncig, ua los ntawm cov hlau cam khwb cia, nrog lub hauv paus sab nrauv kos rau hauv pob zeb. Lub tes tsho sab hauv yog bolted rau sab hauv lub hauv paus. Cov ncej thaiv yog muab tso rau hauv lub tes tsho sab hauv, thiab thaum lub bolts tau nruj, lub tes tsho sab hauv xauv tus ncej nyob rau hauv qhov chaw. Thaum muaj kev sib tsoo, tus ncej yuav khoov lossis deform; yooj yim zawm cov bolts tso cai rau kom yooj yim tshem tawm thiab hloov.
Central Median Corrugated Beam Guardrails: Corrugated beam guardrails ntsia rau hauv nruab nrab nruab nrab yog muab faib ua Am thiab Sm qib raws li lawv qhov cuam tshuam. Sm qib guardrails tau ntxiv dag zog thiab tsim nyog rau cov ntu ntawm qhov nruab nrab nruab nrab uas muaj cov qauv tseem ceeb uas qhov kev hloov pauv ntawm tus neeg saib xyuas yuav tsum tau txwv. Am qib guardrails yog tsim rau feem dav ntawm txoj kev tsheb loj. Lawv tuaj yeem muab faib ua cov sib cais thiab sib xyaw ua ke raws li lawv qhov kev tsim kho. Cov guardrails sib cais yog tsim nyog rau txoj kev seem nrog cov kab nruab nrab uas dav dav, ntau cov qauv hauv cov kab nruab nrab, thiab cov kav dej hauv av. Combined guardrails yog haum rau txoj kev seem nrog nqaim nruab nrab strips, tsawg dua cov qauv nyob rau hauv lub nruab nrab strips, los yog tsawg underground pipelines.
(1) Hla -sectional Layout
Tus ntoo khaub lig- seem txheej txheej ntawm corrugated beam guardrails rau nruab nrab strips yuav tsum tau txiav txim raws li qhov dav ntawm qhov nruab nrab strip, nws tus ntoo khaub lig-sectional shape, thiab layout ntawm underground pipelines.
Thaum txoj kab nruab nrab tau muab tso rau hauv ib qho kev sib cais, qhov chaw tiv thaiv yuav tsum tsis txhob cuam tshuam rau ntawm txoj kev ciam teb. Yog hais tias cais cov guardrails raug ntsia rau hauv ib qho nruab nrab strips nrog curbs, corrugated beam guardrails yuav tsum muaj anti- thaiv thaiv. Yog tias muab tso rau hauv qhov nruab nrab ntawm qhov nruab nrab qhov chaw sib txuas lus, lub zog, lossis lwm cov kav dej tau tso, qhov tsawg kawg nkaus tus nqi C ntawm corrugated beam guardrail tus curb nto yuav raug txo mus rau 25cm (feem ntau C=50cm). Thaum siv cov kab sib txuas corrugated beam guardrails nyob rau hauv nruab nrab nruab nrab, qhov nruab nrab ntawm cov guardrail posts yuav tsum zoo sib xws nrog txoj kev centerline. Yog tias muaj cov qauv lossis cov kav dej hauv av nyob hauv txoj kev hauv nruab nrab, cov kab nruab nrab ntawm cov ncej thaiv tuaj yeem hloov mus rau ib sab, lossis cov khoom sib xyaw tuaj yeem hloov mus rau ib hom cais kom hla cov qauv ntawm qhov chaw nruab nrab. Composite corrugated beam guardrails muaj cov ncej, crossbeams, corrugated beams, thiab fasteners. Cov ntawv tuaj yeem ua los ntawm cov kab hlau los yog channel steel. Crossbeams muaj ob lub channel steels, ntsia rau ntawm ob sab ntawm tus ncej, nrog rau txhua qhov kawg txuas nrog corrugated beam. Qhov siab tshaj plaws ua ke dav ntawm ob kab corrugated yog 100cm, uas tuaj yeem hloov kho raws li qhov dav ntawm qhov nruab nrab nruab nrab.
(2) Kev kho mob kawg
Guardrails ntsia thaum pib, kawg, thiab qhib qhov nruab nrab nruab nrab yuav tsum tau kho lawv qhov kawg. Kev kho tsis tiav yog qhov txaus ntshai heev; thaum lub tsheb sib tsoo nrog ib tug hlau guardrail, qhov kawg beam yuav chob cov neeg nrog caij compartment; thaum lub tsheb sib tsoo lub taub hau- nrog rau lub pob zeb thaiv kev tiv thaiv, nws yuav ua rau muaj kev cuam tshuam loj heev. Hauv lub taub hau- ntawm kev sib tsoo, qhov kawg- kawg tiv thaiv- cov khoom sib tsoo yuav tsum tsis txhob muaj qhov sib tsoo, ua rau bulging, lossis ua rau lub tsheb sib tsoo. Lub tsheb nrawm nrawm thaum sib tsoo yuav tsum tsis pub tshaj qhov txwv. Thaum qhov tawm ntawm - ntawm - tswj lub tsheb sib tsoo ntawm qhov kawg - kawg thiab tus qauv seem, qhov kawg - cov qauv kawg yuav tsum muaj tib lub tsheb - hloov kev ua tau zoo raws li cov qauv seem ntawm lub hauv paus divider guardrail.
End- hom kawg: Ob hom tuaj yeem txiav txim siab: cais thiab ua ke. Rau kev sib cais corrugated beam guardrails, qhov kawg -kawg yuav tsum ua raws li kev sib dhos ntawm lub hauv paus divider. Hauv qee qhov ntev (piv txwv li, 16m), corrugated beam guardrail maj nrawm rau sab hauv los ntawm ob qho tib si kab ntawm qhov sib faib ntawm ib qho piv txwv, feem ntau hauv cov duab parabolic. 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 dhos ntawm qhov qhib qhov qhib, feem ntau 25cm.
Kev tshawb fawb txog qhov kawg-kawg kho tshuab hauv kuv lub teb chaws yog txwv. Cov saum toj no -hais txog txoj kev kho mob pib txuas cov kab corrugated ntawm ob sab nrog qhov sib npaug, tsis tas siv lub zog disassembly-dissipating posts lossis zawv zawg hauv paus, thiab cov kab hluav taws xob corrugated tsis suav nrog kev nqus hluav taws xob lossis cov qauv tsim tawm. Yog li ntawd, lub zog nqus cov nyhuv ntawm qhov kawg no tsis zoo heev, tab sis cov qauv no yooj yim rau kev tsim thiab nruab, thiab muaj tus nqi qis, yog li nws tseem siv dav.
Traffic Diversion Triangle Area Guardrails: Cov cheeb tsam daim duab peb sab ntawm qhov nkag thiab tawm ntawm kev sib hloov ramps, chaw pabcuam, thiab chaw nres tsheb ntawm txoj kev tsheb loj yog suav tias yog thaj chaw muaj kev phom sij thiab yuav tsum tau nruab nrog tshwj xeeb tsim guardrails. Lub guardrail qauv ntawm qhov chaw no yuav tsum tau raws li txoj kev corrugated beam guardrails thiab yuav tsum tau nteg tawm raws li kev sib raug zoo thiab struts ntawm daim duab peb sab cheeb tsam. Thaum lub sij hawm kev teeb tsa, cov cuab yeej siv zog (S) guardrails yuav tsum siv li ntawm 8 meters ntawm ob qho kawg ntawm sab ze tshaj plaws rau txoj kev loj thiab nyob rau hauv 8 meters ntawm ob qho kawg ntawm sab ze tshaj plaws ntawm txoj kev. Rau spans ntawm Class A guardrails yuav tsum tau txuas nrog nyob rau hauv 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. Thaum cov xwm txheej tso cai, kev sib tsoo yuav tsum tau muab tso rau hauv qhov chaw txaus ntshai daim duab peb sab. Cov teeb meem sib tsoo tuaj yeem nqus tau kev sib tsoo lub zog thiab txo cov tsheb ceev hauv kev sib tsoo pem hauv ntej. Nyob rau hauv cov xwm txheej ntawm ib sab kev sib tsoo, kev sib tsoo teeb meem tuaj yeem hloov lub kaum sab xis ntawm lub tsheb thiab coj lub tsheb mus rau qhov chaw ntawm txoj kev; yog li ntawd, lawv tau dav siv nyob rau hauv qhov chaw txaus ntshai daim duab peb sab ntawm txoj kev khiav tsheb.