Iintsimbi zokugada ezindleleni zahlulwe ngokubanzi zaba ziintsimbi zokugada eziguquguqukayo, iintsimbi zokugada ezingaqinanga kunye neentsimbi zokugada eziqinileyo. Iinrayile zokugada eziguquguqukayo ngokubanzi zibhekisa kwiireyile zokugada iintambo, iirayile ezomeleleyo zokugada zihlala zibhekisa kwiireyile zesamente zesamente, kwaye iirayile eziqinileyo zibhekisa kwimiqadi yokugada. I-beam fence guardrail sisakhiwo somqadi esimiswe ngeentsika, sixhomekeke kwi-deformation egobileyo kunye noxinzelelo lwe-guardrail ukuxhathisa ukungqubana kwezithuthi. Ii-beam guardrails zinobulukhuni obuthile kunye nokuqina, kwaye zifunxa amandla ongquzulwano ngoguquko lwe-crossbeam. Iindawo zayo ezonakalisiweyo zilula ukutshintshwa, zibe nomphumo othile wokungeniswa kwezinto ezibonakalayo, zinokulungelelaniswa kunye nokuma komgca wendlela, kwaye ube nenkangeleko enhle. Phakathi kwazo, i-beam guardrail esetyenzisiweyo yeyona isetyenziswa kakhulu ekhaya nakwamanye amazwe kwiminyaka yakutshanje. Kuluhlu olubanzi.
1. Imigaqo yokumisela iireyili ecaleni kwendlela
Iintsimbi zokugada ezisecaleni kwendlela zahlulwe zaziindidi ezimbini: iintsimbi zokulinda ezilunxwemeni kunye neentsimbi zokuthintela imiqobo. Ubude obuncinane bokumisela ecaleni kwendlela ziimitha ezingama-70. Xa umgama phakathi kwamacandelo amabini onogada ungaphantsi kweemitha ezili-100, kuyacetyiswa ukuba uwabeke ngokuqhubekayo phakathi kwamacandelo amabini. I-Guardrail yocingo ifakwe phakathi kwamacandelo amabini okugcwalisa. Icandelo lokumba elinobude obungaphantsi kweemitha ezili-100 kufuneka liqhubeke kunye neendawo zokugada zamacandelo okuzalisa kuzo zombini iziphelo. Kuyilo lweereyile ezisecaleni kwendlela, iintsimbi zokugada kufuneka zisekwe ukuba nayiphi na le miqathango ilandelayo ihlangatyeziwe:
A. Amacandelo apho i-slope yendlela i kunye nobude bodonga h buphakathi koluhlu olunomthunzi woMfanekiso 1.
B. Amacandelo adibana noololiwe kunye noohola bendlela, apho izithuthi zinaMacandelo apho isithuthi sinokuwela kumzila kaloliwe ongenelayo okanye kwezinye iindlela.
C. Amacandelo apho kukho imilambo, amachibi, iilwandle, imigxobhozo kunye namanye amanzi ngaphakathi kweemitha ezi-1.0 ukusuka kunyawo lwendlela kwiindlela ezihamba ngokukhawuleza okanye iindlela zodidi lokuqala kwiimoto, nalapho izithuthi zinokuba yingozi kakhulu ukuba zithe zawela kuzo.
D. Indawo engunxantathu yokungena kunye neerempu zokuphuma zotshintshiselwano lweendlela ezikhawulezayo kunye nangaphandle kweegophe ezincinci zerediyasi zeerempu.
2. Iindlela zokugada kufuneka zifakwe kuyo nayiphi na imeko kwezi zilandelayo:
A. Amacandelo apho i-slope yendlela kunye nobude bodonga h zingaphezulu komgca onamachokoza kuMfanekiso 1.
B. Amacandelo apho ithambeka lendlela i kunye nokuphakama kodonga h kungaphakathi kweemitha ezi-1.0 ukusuka emphethweni wegxalaba lomhlaba kwiindlela ezikhawulezayo okanye kwiindlela zodidi lokuqala lweemoto Shanghai epoxy floor, xa kukho izakhiwo ezifana nezakhiwo ze-gantry, iifowuni zikaxakeka, ii-piers okanye i-abutments of overpasses.
C. Ukunxulunyaniswa noololiwe kunye noohola bendlela, apho izithuthi zinokuqhekeza koololiwe abakufutshane okanye abanye oohola bendlela.
D. Amacandelo kancinane apho ububanzi bendlela butshintsha.
E. Amacandelo apho irediyasi yegophe ingaphantsi kweradiyasi esezantsi.
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G. Ukudibanisa phakathi kweziphelo zeebhulorho ezinkulu, eziphakathi kunye ezincinci okanye iziphelo zezakhiwo eziphakamileyo kunye ne-roadbed.
H. Apho kubonwa kuyimfuneko ukuseta iitrayile zokugada kwiziqithi eziphambukayo kunye neziqithi ezahlukanayo.
Ixesha lokuposa: Aug-12-2024