鋼波紋管的墊片與緊固件相配。螺栓與螺母均采用熱浸鍍鋅處理。當鋼波紋涵管管徑小于等于1.0米時,其波距為125mm波高為25mm;當鋼波紋涵管管徑大于1.0m時,其波距為200mm,波高位55mm。
兩個半圓形的鋼波紋管如何進行拼接使用?
各管(guan)節間連接強度(du)(du)須(xu)滿足(zu)施(shi)工中路基填(tian)土及壓(ya)(ya)實機械(15T震動壓(ya)(ya)路機)作(zuo)業荷(he)載壓(ya)(ya)力的(de)要求,不得有變形(xing)、錯(cuo)位現(xian)象(xiang);密(mi)封材料采用方(fang)形(xing)耐久性(xing)能較好的(de)橡(xiang)膠密(mi)封圈或方(fang)形(xing)石棉盤根密(mi)封條。 鋼波紋管(guan)涵應用工程實例廣東(dong)省(sheng)某山(shan)區高(gao)(gao)速公路有2個(ge)U形(xing)溝谷路段,原施(shi)工圖設計采用高(gao)(gao)架橋(qiao)跨越,但在實施(shi)階段因(yin)為征地(di)拆(chai)遷(qian)等原因(yin),導(dao)致施(shi)工進度(du)(du)滯后(hou)很多。為加快施(shi)工進度(du)(du),將兩處(chu)高(gao)(gao)架橋(qiao)改(gai)為填(tian)方(fang)路基cqjngd.cn,同時設置涵洞知足(zu)過(guo)人及過(guo)水(shui)的(de)需求。
公路鋼波紋管(guan)多(duo)少錢(qian)
因為(wei)涵(han)頂(ding)填(tian)土(tu)(tu)較(jiao)高,備選(xuan)涵(han)洞(dong)(dong)方(fang)案(an)有拱(gong)涵(han)及(ji)鋼波(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)涵(han)2種,經由比較(jiao),采用(yong)(yong)在(zai)兩處填(tian)方(fang)路段(duan)均設置鋼波(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)涵(han)的(de)方(fang)案(an)。施(shi)工(gong)中當(dang)涵(han)洞(dong)(dong)填(tian)土(tu)(tu)高度不(bu)(bu)足0.5m時嚴禁采用(yong)(yong)振動(dong)式碾(nian)壓(ya)設備對涵(han)頂(ding)上和涵(han)洞(dong)(dong)范圍內的(de)填(tian)土(tu)(tu)進(jin)行(xing)碾(nian)壓(ya),波(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)填(tian)土(tu)(tu)小于(yu)50cm時,不(bu)(bu)得(de)使用(yong)(yong)大于(yu)6T的(de)壓(ya)路機碾(nian)壓(ya),也不(bu)(bu)許施(shi)工(gong)機械通行(xing)。焊接表面不(bu)(bu)應有氣孔、裂紋(wen)(wen)(wen)、夾渣及(ji)飛濺物(wu)等(deng)缺陷 為(wei)方(fang)便(bian)運輸與施(shi)工(gong),在(zai)滿足波(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)涵(han)受(shou)力性能(neng)及(ji)規范使用(yong)(yong)要求的(de)前提(ti)下,波(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)也可使用(yong)(yong)兩片(pian)半圓式拼裝(zhuang)施(shi)工(gong)。
鋼(gang)波(bo)紋(wen)涵(han)(han)(han)(han)管(guan)(guan)(guan)涵(han)(han)(han)(han)現場安(an)裝(zhuang)前(qian)內(nei)壁涂抹熱瀝青2道(dao),毎(mei)道(dao)厚2mm,涵(han)(han)(han)(han)底縱坡>3%時,內(nei)壁涂抹2cm厚聚合物(wu)(環氧樹脂)類水(shui)泥砂(sha)漿,范圍為下半個涵(han)(han)(han)(han)管(guan)(guan)(guan)。 鋼(gang)波(bo)紋(wen)涵(han)(han)(han)(han)管(guan)(guan)(guan)采(cai)用工廠標準化生(sheng)產,通常涵(han)(han)(han)(han)頂(ding)填土(tu)高(gao)度與鋼(gang)管(guan)(guan)(guan)厚度、波(bo)高(gao)等參(can)數規格有明確的(de)對應關系。而山區高(gao)速公(gong)路涵(han)(han)(han)(han)洞較長(chang),如果(guo)某一座(zuo)涵(han)(han)(han)(han)洞涵(han)(han)(han)(han)頂(ding)填土(tu)高(gao)度位于兩種涵(han)(han)(han)(han)洞規格臨界處(chu),則采(cai)用高(gao)或低標準生(sheng)產通常會有幾(ji)十萬(wan)元的(de)價(jia)格差別。
在(zai)這(zhe)種情況下,建議在(zai)低標準的(de)基礎上采用局部增設加強(qiang)肋的(de)做法以(yi)達(da)到既能保證(zheng)波紋(wen)(wen)涵(han)管在(zai)施(shi)工(gong)(gong)過程及(ji)后期運(yun)營的(de)要(yao)求,又節約造價的(de)目的(de)。具(ju)體做法如圖3所示,在(zai)管頂(ding)填高(gao)超過(H-3)m范圍(wei)內的(de)管身(shen)頂(ding)部設置(zhi)加強(qiang)肋,加強(qiang)肋在(zai)圖示范圍(wei)內沿(yan)洞(dong)身(shen)每2m(中心(xin)間(jian)隔(ge))設置(zhi)1道,加強(qiang)肋是圓(yuan)(yuan)心(xin)角為(wei)225°的(de)鋼波紋(wen)(wen)管(型(xing)號與涵(han)洞(dong)洞(dong)身(shen)所采用的(de)鋼波紋(wen)(wen)管型(xing)號相同(tong))圓(yuan)(yuan)弧片。 施(shi)工(gong)(gong)方便:波紋(wen)(wen)管涵(han)是采用套(tao)筒(tong)或法蘭(lan)方式連接(jie),而(er)且可以(yi)根據需(xu)要(yao)定制(zhi)長(chang)度,即(ji)使是非熟練工(gong)(gong)也可以(yi)操作(zuo),施(shi)工(gong)(gong)以(yi)少量(liang)的(de)手(shou)工(gong)(gong)操作(zuo),可在(zai)短(duan)時間(jian)內完成(cheng),既快捷又方便。
優(you)良的經濟性(xing):連接(jie)方式簡便(bian),可縮短工期。 波(bo)(bo)紋(wen)(wen)管(guan)要想(xiang)有(you)(you)長遠的發(fa)(fa)展,須調整和優(you)化產(chan)業結構,既要繼續充分(fen)發(fa)(fa)揮(hui)傳統(tong)波(bo)(bo)紋(wen)(wen)管(guan)產(chan)業的優(you)勢,又(you)要大力發(fa)(fa)展知識、技(ji)術密集型(xing)產(chan)業和新興產(chan)業,以推動波(bo)(bo)紋(wen)(wen)管(guan)產(chan)業的升級。只有(you)(you)這樣,才(cai)能盡快(kuai)縮短波(bo)(bo)紋(wen)(wen)管(guan)與(yu)發(fa)(fa)達之間的差距。
鋼波(bo)紋涵(han)管(guan)(guan)(guan)的特征強度(du)高,由于其獨特的波(bo)紋結構使其比同(tong)口(kou)徑的水(shui)泥(ni)管(guan)(guan)(guan)耐壓強度(du)大15倍以(yi)上(shang)。運輸(shu)方便(bian),波(bo)紋管(guan)(guan)(guan)涵(han)的重量只有同(tong)口(kou)徑水(shui)泥(ni)管(guan)(guan)(guan)的1/10到1/5,即使在窄的場所沒有運輸(shu)設備(bei),人工(gong)也可運輸(shu)。 南方地區雨(yu)水(shui)充沛,地下(xia)水(shui)豐富,軟土分布,做(zuo)好涵(han)洞基礎及臺背回填對于鋼波(bo)紋涵(han)管(guan)(guan)(guan)整體穩定及防水(shui)尤為(wei)重要。
地基(ji)要對(dui)整(zheng)個鋼波紋(wen)(wen)涵(han)管(guan)保持(chi)均勻(yun)的承載力,要避(bi)(bi)免軟弱基(ji)和巖(yan)基(ji)交叉(cha)的地基(ji),如(ru)果不(bu)可避(bi)(bi)免軟弱地基(ji),要用砂(sha)石及礫石壓實(shi)成型(xing),盡量減(jian)少整(zheng)個區間的變位量。基(ji)礎厚度從鋼波紋(wen)(wen)涵(han)管(guan)的底(di)部算起(qi)以80cm左(zuo)右為宜,用透(tou)水性好(hao)、粒度分布(bu)良好(hao)的砂(sha)礫或(huo)碎石成型(xing)。材料的大粒徑不(bu)得超過波長的1/2。公路鋼波紋(wen)(wen)管(guan):hanihanbj.com
分享此文章: |
版權所有(you):衡水浩威新材料有(you)限(xian)公司 ICP備案/許(xu)可(ke)證(zheng)號: 技術(shu)支持: