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增大混凝土排水管內的通水才能和避免水封損壞

來源:www.kadinask.com         發布時間:2019-04-09 返回列表
鋼筋混凝土管可接受較大的內壓

  混凝土排水管材必須具有滿足的強度,以接受土壤壓力、車輛行進產生的動荷載和內部的水壓,并在運送和施工過程中不至于損壞。排水管渠應具有能反抗水巾雜質的沖刷、磨損及腐蝕的才能,以使管槊經久耐用。排水管渠應具有較好的抗滲功能,以避免污水滲出或地下水進入。排水管渠應具有良好的水力條件,內壁應規整光滑,使水流阻力盡量減小。排水管渠應就地取材,并考慮到頂制管件及快速施工的可能,以便盡量下降管渠的造價投運送和施工的費用?;炷抗芎弯摻罨炷凉苓m用于排除雨水和污水,其管口形式通常有承插式、企口式?;炷僚潘芎弯摻罨炷凉艿闹饕攸c是制作方便、造價低、消耗鋼材少,在室外排水管道中使用廣泛。缺點是反抗酸、堿侵蝕及抗滲功能較差,管節短,接頭多,施工復雜,在地震區或淤泥土質區域不宜敷設?;炷凉苤睆揭话阈∮?00 mm.若直徑超過500 mm,一般應做成鋼筋混凝土管。鋼筋混凝土管可接受較大的內壓,可在對管材抗彎、抗滲有要求,管徑較大的工程中使用。
增大混凝土排水管內的通水才能和避免水封破壞
  重慶混泥土排水管關于增大混凝土排水管內的通水才能和避免水封破壞是修建內部排水系統中兩個最重要的問題,這兩個問題都與排水立管內的壓力有關。因而-需求剖析排水立管內壓力改變規則,找出影響排水立管內壓力改變的要素,依據這些影響要素.采納相應的解決辦法和措施,以增大排水立管內的通水才能。

水流由橫支管進入立管,在立管中呈水膜流狀況挾氣向下活動,空氣從仲頂通氣管頂端補入。選取屯管頂部宅氣入口處為基準面(o—o),另一斷面(1-l)選在排水橫支管下最大負壓構成處?;炷僚潘芩嗍撬髟跊_激流狀況下,由橫支管進入立管下落,在橫支管與立管銜接部短時間內構成的水力學現象。它沿進水活動方向充塞立管斷面·一起,水舌兩邊有兩個氣孔作為空氣活動通路。

這兩個氣孔的斷面遠比水舌上方立管內的氣流斷面積小,在水流的作朋下,向下活動的空氣通過水舌時,造成空氣能量的部分損失。在排水立管管徑必定的條件下,水舌部分阻力系數K與排水量巨細,橫支管與立管銜接處的幾許形狀有關。


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