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来自江云波的问题

  【Asamethodofspanningspace,thearchcansupportgreaterweightthanahorizontalbeam.Itworksincompressiontodiverttheweightaboveitouttothesides,wheretheweightisbornebytheverticalelementsoneithersideofthearch.Thearchwor】

  Asamethodofspanningspace,thearchcansupportgreaterweightthanahorizontalbeam.Itworksincompressiontodiverttheweightaboveitouttothesides,wheretheweightisbornebytheverticalelementsoneithersideofthearch.

  Thearchworkedbydistributingthestructuralofabuildingtowardthecenterofthearch.

  但是,原文说的是将重量分散到四周,为什么选这个?

1回答
2020-05-31 23:08
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唐峥

  Forhorizontalbeam,theweightisstraigtdown,itmeanstheverticalelementsoneithersideofthebeamneedtobearexactlytheweightextertsonthebeam.

  Forthearchshape,theweightonitispointingtothecenterofthearch,vertically,theweightissmallerthanthetheactualweightexertedonthearch.therefore,theverticalelementsontheeithersideofthearchdonotneedtobearthatmuchweight.

  其实就是力的分解.archshape的话,顶所受到的力都是指向中心的.垂直方向上施加给立柱的里是分解的力,显然要小于实际的力.

2020-05-31 23:11:00

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