當鋼波紋管涵(han)(han)處于軟土地基(ji)(ji)(ji)上(shang)(shang)(shang)時,需(xu)對軟土路基(ji)(ji)(ji)進(jin)行處理,然后,在其(qi)上(shang)(shang)(shang)填一(yi)層大(da)于20cm厚的砂(sha)礫(li)墊層,并夯實(shi)嚴密(mi)。承載才干不太高的普通地基(ji)(ji)(ji),需(xu)設厚度(du)的基(ji)(ji)(ji)礎。但是,若將涵(han)(han)管底基(ji)(ji)(ji)槽(cao)原狀土經嚴厲夯實(shi)(其(qi)夯實(shi)度(du)到(dao)重(zhong)型擊實(shi)密(mi)實(shi)度(du)的90%以上(shang)(shang)(shang))往后,也可直接將鋼制波紋(wen)管涵(han)(han)置于地基(ji)(ji)(ji)上(shang)(shang)(shang)。
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(guan)的水平鋪(pu)裝(zhuang),銜接管(guan)道滑管(guan)和排氣閥(fa)門(men),排氣閥(fa)門(men)比室外(wai)高20-50公分(fen)。結構簡(jian)單(dan),修建施工方便快捷。鋼(gang)波紋管(guan)涵(han)不(bu)能直(zhi)接置于(yu)巖石或混凝(ning)土(tu)基床上,因過(guo)于(yu)剛性的支承(cheng),不(bu)光會(hui)下(xia)降管(guan)壁本身所具有的柔(rou)性,并且還會(hui)減小涵(han)管(guan)的承(cheng)載才干(gan)。
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(dian)層選(xuan)用50mm混凝土。鋼波(bo)紋(wen)管等(deng)工(gong)藝也在(zai)不斷地前進(jin)與(yu)開展(zhan),逐漸開展(zhan)出直口(kou)、剛度流水線、承插(cha)孔和軟性流水線的這幾種接口(kou)行(xing)事。
因為直口(kou)管和剛(gang)度流(liu)水線管工程施(shi)工效率低,抗(kang)震等級特性差(cha),路(lu)基移動(dong)會(hui)使(shi)插口(kou)翻開(kai),形(xing)成地上陷落危害。因而(er)這二種插口(kou)在工程項目中已(yi)基礎不選(xuan)用。電纜載流(liu)量(liang)高,鋪(pu)裝指(zhi)數(shu)值高過PVC管材10個百分數(shu)。
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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