當鋼波紋管涵處于軟土地基上時,需對軟土路基進行處理,然后,在其上填一層大于20cm厚的砂礫墊層,并夯實嚴密。承載才干不太高的普通地基,需設厚度的基礎。但是,若將涵管底基槽原狀土經嚴厲夯實(其夯實度到重型擊實密實度的90%以上)往后,也可直接將鋼制波紋管涵置于地基上。
When the steel corrugated pipe culvert is on the soft soil foundation, the soft soil subgrade shall be treated, and then a layer of gravel cushion with thickness of 20cm shall be filled on it and compacted tightly. For ordinary foundation with low bearing ability, it is necessary to set a foundation with thickness. However, if the undisturbed soil of culvert bottom foundation trench is severely compacted (its compaction degree is more than 90% of heavy compaction density), steel corrugated pipe culvert can also be directly placed on the foundation.
雙壁波紋管的水平鋪裝,銜接管道滑管和排氣閥門,排氣閥門比室外高20-50公分。結構簡單,修建施工方便快捷。鋼波紋管涵不能直接置于巖石或混凝土基床上,因過于剛性的支承,不光會下降管壁本身所具有的柔性,并且還會減小涵管的承載才干。
所以對巖石地基應挖掉一部分軟巖,換填一層土,并仔細夯實。出產制作特點好,安裝允許有轉角。按雙壁波紋管規范基坑矩形坑,墊層選用50mm混凝土。鋼波紋管等工藝也在不斷地前進與開展,逐漸開展出直口、剛度流水線、承插孔和軟性流水線的這幾種接口行事。
因為直口管和剛度流水線管工程施工效率低,抗震等級特性差,路基移動會使插口翻開,形成地上陷落危害。因而這二種插口在工程項目中已基礎不選用。電纜載流量高,鋪裝指數值高過PVC管材10個百分數。
雙壁波紋管的安裝應與左右垂直面,外側高,視點低(視點5o),以確保洗后沒有水。管道后端工程師與墻正中間的距離應在20-25厘米正中間。寒冷地區應在管道外蓋上補水保濕層,先用細砂夯實,再用2cm抹灰砂漿整平。分析化學特點安穩、不焦化、其抗拉強度隨時問提高而有所增加。//hanihanbj.com/
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