當(dāng)鋼波紋管涵處于軟土地基上時(shí),需對(duì)軟土路基進(jìn)行處理,然后,在其上填一層大于20cm厚的砂礫墊層,并夯實(shí)嚴(yán)密。承載才干不太高的普通地基,需設(shè)厚度的基礎(chǔ)。但是,若將涵管底基槽原狀土經(jīng)嚴(yán)厲夯實(shí)(其夯實(shí)度到重型擊實(shí)密實(shí)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(jié)構(gòu)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(huì)下降管壁本身所具有的柔性,并且還會(huì)減小涵管的承載才干。
所以對(duì)巖石地基應(yīng)挖掉一部分軟巖,換填一層土,并仔細(xì)夯實(shí)。出產(chǎn)制作特點(diǎn)好,安裝允許有轉(zhuǎn)角。按雙壁波紋管規(guī)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(jìn)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?yàn)橹笨诠芎蛣偠攘魉€管工程施工效率低,抗震等級(jí)特性差,路基移動(dòng)會(huì)使插口翻開,形成地上陷落危害。因而這二種插口在工程項(xiàng)目中已基礎(chǔ)不選用。電纜載流量高,鋪裝指數(shù)值高過PVC管材10個(gè)百分?jǐn)?shù)。
雙壁波紋管的安裝應(yīng)與左右垂直面,外側(cè)高,視點(diǎn)低(視點(diǎn)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(yīng)在20-25厘米正中間。寒冷地區(qū)應(yīng)在管道外蓋上補(bǔ)水保濕層,先用細(xì)砂夯實(shí),再用2cm抹灰砂漿整平。分析化學(xué)特點(diǎn)安穩(wěn)、不焦化、其抗拉強(qiáng)度隨時(shí)問提高而有所增加。http://topusaedu.com.cn/
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