Viaduct - wata gada, ko ba haka ba?

Bridges, overpasses, flyovers, viaducts - duk kalmomin suna nufin abu. Haka kuma, suna wakiltar wani sosai kama da yi ayyukan, ne yadu amfani da mutum cikin kasuwanci. Don rarrabe tsakanin wadannan Concepts, kuma yayi kananan kaya.

gada

Wannan aikin injiniya yi, ƙirƙira wani dogon lokaci da suka wuce. Daya daga cikin tsofaffin kwanakin daga goma sha uku karni BC. Tun zamanin da, mutane sun fara gina gadoji don shawo kan ruwa cikas kamar koguna, Lakes, dausayi, da dai sauransu Saboda haka, ba wai kawai shi ne kalmar mafi amfani tsakanin samarwa, amma kuma mafi tsufa. A wani m ji, duk sauran wuraren da aka ambata ne gadoji, don haka wannan tambaya shirya kai a cikin suna, ya kamata a amsa "eh." Duk da haka, akwai wani "amma." Game da shi kadan daga baya.

viaduct

Wannan makaman, wanda aka gina a kan sauran hanya, amma shi ba ya kira wata gada, saboda a zahiri akwai tsanani bambance-bambance da shi. Da farko an sa da cewa da zane na ƙetare haddi babu bukatar a yi la'akari da tasirin da daban-daban na halitta mamaki hade da watercourse, samuwa a karkashin gada. Saboda haka tana goyon bayan halittar manufa a cikin wannan hali ya bambanta fundamentally. Ba za mu shiga cikin da fasaha da cikakken bayani, za mu tuna kawai uku dalilai, wanda da ciwon kai a gadoji zanen kaya. Wannan warwarewarsu ga kankara, eroding da kuma girma jiragen ruwa wucewa a ƙasa. Ƙetare haddi - shi ne, a gaskiya, da gada a kan saba hanya. Saboda haka, muna da wani lokaci domin wannan makaman. A cikinta ta'allaka a kananan "amma" da amincewar da yin amfani da kalmar "gada" a cikin tabbatar da dalilin da ƙetare haddi.

ƙetare haddi

Idan for yi na ƙetare haddi yawanci bukatar biyu zuwa hudu Al'arshinSa na 10-30 mita a tsawon kowane, cewa ga kwanciya da trestle ne yawanci zama dole ga mafi daga gare su. A gaskiya, wannan shi ne dukan bambanci tsakanin aikin injiniya Tsarin. Duk da haka, da muhimmanci a nan shi ne cewa loading dandali ya ƙetaro mahara jinsunan shingen, misali, yana iya zama wani kogi, babbar hanya da kuma Railway waƙoƙi a lokaci guda, ta haka ne da hada a kansa kuma gada da kuma ƙetare haddi.

viaduct

La'akari da wadannan irin gada. Akwai wani irin cikas, ta sha bamban daga waɗanda suka riga suka tattauna a baya. Wannan ya hada da ravines, gorges, ravines. Saboda haka, akwai ba zai yiwu ka yi amfani da kalmar "ƙetare haddi". Yana da wani daban-daban irin gada tsarin - da viaduct. La'akari da fasali.

Gina viaducts maimakon na al'ada hanyoyi ne barata a lokuta inda tattalin arziki inexpedient don ƙirƙirar wani tudun ƙasa. Wannan ne duk ƙaddara da zurfin da kwazazzabo, kuma ta tsawon a cikin profile na samuwa kai hanya. Saboda haka, bambancin daga viaduct trestle ne ba fiye ko žasa lebur surface karkashin gada. Saboda wannan factor, wannan irin goyon bayan da kuma Al'arshinSa a cikin wannan yanayin ne ba dace. Viaducts yawanci - kyau sosai, kuma majestic gine-gine. Alal misali, da tsawo na daya daga cikin ginshiƙai na duniya mafi girma viaduct na Millau ne kamar 340 mita.

Ci gaba da theme, za mu iya ambaci wani ban sha'awa gini, ko da yake shi ne kawai distantly alaka Concepts kamar overpasses da kuma hanyoyi. Wannan shi ne abin da ake kira aqueducts. Wannan shi ne analogous zuwa viaduct, kawai don canja wurin da ruwa, maimakon motoci a kan gully, wani kogi ko wasu matsala, yawanci zama wani ɓangare na ban ruwa tsarin.

ƙarshe

Komowa zuwa tambaya shirya kai a cikin suna, da karshe amsar da shi. Eh, viaduct - wata gada a kan manufa na yi, kuma ba, kamar yadda ba a halitta a kan ruwa hadura, da kuma a kan wani irin hanya. Irin wannan ne gabban.