Mun taimaka duniya girma tun 1983

Loadingarfin ɗaukar ma'auni

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“Bani dunkin dunkule kuma zan daga duniya. - Archimedes. Ba ka mizani, me za ka iya riƙewa? ”

Kowa ya san girman ɗora kwatankwacin daidaito a cikin tsarin tsarin. Yaya girmansa zai iya zama? Muna magana da bayanai.

1. Daidaitaccen lissafin lodi

An rarraba madaidaiciyar sifa cikin nau'in B (nau'in daidaitacce) da nau'in Z (nau'ikan nau'ikan nauyi), kayan ba ƙasa da Q345 ba. An nuna halaye na sashe a cikin tebur da ke ƙasa.

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Dangane da “Technicalwarewar fasaha don amincin makullin ƙarfe tubular ƙarfe a cikin gini” (JGJ231-2010):

Tsarin lissafi 1: l0 = ηh

Tsarin lissafi 2: l0 = h '+ 2ka

Tsakanin su:

η - daidaitaccen daidaitaccen kwatancen 1.2;

h - nisan matsakaicin matsakaicin matsakaicin matsakaici na sikeli; (ƙimar abu gabaɗaya ita ce 1500)

h '- ya kamata a rage tazarar matakin nesa da kwano ɗaya; (generalimar abu gaba ɗaya ita ce 1000)

k - ƙididdigar haɓakar tsawon ƙarfin cantilever ƙarshen, an saita shi azaman 0.7;

a - tazara daga mizani zuwa layin tsakiyar leda a saman bene zuwa wurin tallafi na daidaitaccen tushe jack. (Max. 650mm)

Lissafin da aka lissafa na daidaitacce yana da babban darajar, watau, l0 = 1910mm

Yanayin rabo: Rubuta B λ = l0 / i = 119.3, Rubuta Z λ = l0 / i = 94.6.

A cewar "JGJ231-2010 ″ shafi D tebur D-2 Q345 karfe bututu axis matsa lamba bangaren kwanciyar hankali coefficient φ za a iya samu: Type B φ = 0.350, Z type, φ = 0.516.

Sannan matsakaicin izinin ƙirar zane mai daidaitaccen ma'auni:

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2. Gwajin gwaji na misali

Haɗe tare da sakamakon ƙididdigar misali, Rapid Scaffolding (Engineering) Co., LTD. tare da Jami'ar Kudu maso Gabas, sun yi jerin gwajin kimiyya da tsari na iya aikin loda kayan aikin kulle faifai.

Saitunan Gwaji:

Tsawon Ledger 1500mm, nisan nesa 1500mm, tare da cikakkun takalmin katako.

Sakamakon gwaji:

Nau'in B: ƙarfin ɗaukar hoto na ƙarshe F = 396.3kn (misali 4), kwatankwacin nauyin motocin iyali 28, daidaitaccen ma'auni 99.1kn, daidai da nauyin motoci 7 na iyali.

Samfurin Z: bearingarshen ƙarfin ɗaukar hoto F = 546.0kn (ƙa'ida 4), kwatankwacin nauyin motocin iyali 40 tare da mizani guda 136.5kn, daidai da nauyin motoci 10 na iyali.


Post lokaci: Jan-16-2020