half tunnel vault 中文意思是什麼

half tunnel vault 解釋
半隧洞圓頂
  • half : n (pl halves )1 半,一半;一部分。2 半小時;半英里;半品脫;半價票;〈美國〉半美元;半學年,一學期。...
  • tunnel : n 隧道;地道;坑道;管道,煙道,風洞;【礦物】石巷,平峒。 tunnel warfare 地道戰。vt (〈英國〉 l...
  • vault : n 1 【建築】拱頂,穹窿。2 穹窿狀覆蓋物;天空,蒼穹。3 圓頂房間[地下室];〈美國〉地窖;地下保險庫...
  1. The principal stress value arised alteration, the magnitude of stress closed to 25 ~ 32mpa, its influence scope was within the scope outside of tunnel opening 10 ~ 15 meter, maximum tense focused at vault and middle of floor about half meter. shearing stress focused at corner of vault and wall, always been sheared

    主應力量值也發生了較大改變,壓應力可達25 32mpa ,其影響范圍在隧道邊墻外10 15m ;拉應力集中在拱頂和底板中部約0 . 5m范圍內,最大可達10mpa ;在拱腰和墻腳常為剪應力集中區,易發生塑性剪切破壞。
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