Road guardrails anowanzo kupatsanurwa kuita anochinjika magadhi, semi-akaomesesa magadhi uye akaomesesa magadhi. Flexible guardrails anowanzo tarisa kune tambo guardrails, akaomesesa guardrails anowanzo reva simende kongiri magadhi, uye semi-akaomesesa magadhi anowanzo reva danda rekuchengetedza. Beam fence guardrails chivakwa chedanda chakamisikidzwa nembiru, chichitsamira pakukotama deformation uye kushushikana kweguardrail kuramba kudhumhana kwemotokari. Beam guardrails ane kumwe kuoma uye kuoma, uye anotora simba rekudhumhana kuburikidza nekushandurwa kweiyo crossbeam. Zvikamu zvaro zvakakanganisika zviri nyore kutsiva, zvine imwe yekuona induction maitiro, inogona kurongeka neiyo nzira yemugwagwa chimiro, uye kuve nechitarisiko chakanaka. Pakati pavo, corrugated beam guardrail ndiyo inonyanya kushandiswa kumba nekune dzimwe nyika mumakore achangopfuura. Nokuda kwehupamhi.
1. Misimboti yekumisikidza magadhi padivi pemugwagwa
Mapadhuze emumugwagwa anorinda anonyanyo kupatsanurwa kuva marudzi maviri: ebankment guardrails uye zvipingaidzo guardrails. Hurefu hwekuseta hudiki hwemugwagwa hunosvika makumi manomwe emamita. Kana chinhambwe chiri pakati pezvikamu zviviri zvevarindi chiri pasi pe100 metres, zvinokurudzirwa kuti urambe uchizviisa pakati pezvikamu zviviri izvi. Iyo fence guardrail yakasungirirwa pakati pezvikamu zviviri zvekuzadza. Chikamu chekuchera chine hurefu husingasviki 100 metres chinofanira kuenderera mberi nevarindi vezvikamu zvekuzadza pamigumo miviri. Mukugadzirwa kwenzira dzekurinda padivi pemugwagwa, magadhi anofanirwa kusetwa kana chero eiyi anotevera mamiriro akazadzikiswa:
A. Zvikamu zvinotenuka i uye kureba kwemupendero zviri mukati memumvuri weFigure 1.
B. Zvikamu zvinopindirana nenjanji nemigwagwa mikuru, uko motokari dzine MaSections apo motokari inogona kuwira panjanji inoyambuka kana mimwe migwagwa.
C. Zvikamu pane nzizi, madziva, makungwa, machakwi nedzimwe mvura mukati me 1.0 metres kubva pasi penzira panzira dzinofamba-famba kana migwagwa yemhando yepamusoro yemotokari, uye uko motokari dzingave dzine ngozi zvikuru kana dzikawira madziri.
D. Nzvimbo yetriangular yekupinda nekubuda marambu ekuchinjana kwe Expressways uye kunze kwediki radius macurves emarambi.
2. Mugwagwa magadhi anofanirwa kuiswa mune chero anotevera mamiriro:
A. Zvikamu zvemutsetse wemugwagwa i uye kureba kwemupendero h zviri pamusoro pemutsetse une madota pamufananidzo 1.
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C. Parallel kune njanji nemigwagwa mikuru, uko mota dzinogona kupaza njanji dziri pedyo kana mimwe migwagwa mikuru.
D. Zvishoma nezvishoma zvikamu apo hupamhi hwemugwagwa hunochinja.
E. Zvikamu apo curve radius ishoma pane diki reradius.
F. Zvikamu zvekuchinja nzira yekumhanya munzvimbo dzemasevhisi, nzvimbo dzekupaka kana panomira mabhazi, uye zvikamu zvinosanganisirwa munzvimbo dzine mativi matatu apo fenzi nemagudza anopatsanura nekubatanidza traffic.
G. Kubatana pakati pemagumo emabhiriji makuru, epakati uye maduku kana magumo ezvivakwa zvakakwirira uye mugwagwa.
H. Pazvinenge zvichionekwa zvakakodzera kuisa mirairi yevarindi pazvitsuwa zvinopatsanurwa uye zvitsuwa zvakapatsanurwa.
Nguva yekutumira: Aug-12-2024