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衡水浩威新材料(liao)有限(xian)公司主營(ying)產品:鋼(gang)波紋管、鋼(gang)波紋涵管

佳木斯公路鋼波紋涵管對地基承載力的要求

瀏覽:19035 發布(bu)日期:2020-08-21

施(shi)工簡單、周期(qi)短(duan)采用(yong)鋼波紋(wen)管施(shi)工T期(qi)短(duan),土建(jian)與型材安(an)裝可分開實施(shi),然(ran)后進行整體拼裝。鋼波紋管涵相比鋼(gang)筋混(hun)凝土涵,可(ke)節省工期近(jin)1個(ge)多(duo)月,以長10m的構造物為(wei)例(li):整(zheng)裝(zhuang)(zhuang)式波紋管現場安裝(zhuang)(zhuang)時間(jian)(jian)約為(wei)0.5d,回埴時間(jian)(jian)約為(wei)1d;拼裝(zhuang)(zhuang)式波紋管涵現場拼裝(zhuang)(zhuang)時間(jian)(jian)約為(wei)2d,回填(tian)時間(jian)(jian)約為(wei)3d;

公路(lu)鋼波紋涵管(guan)對(dui)地基(ji)承(cheng)載力的要求

耐久性(xing)好(hao)鋼波紋(wen)管涵一般采用(yong)工(gong)(gong)廠(chang)加(jia)(jia)工(gong)(gong)制作,出廠(chang)前涵管及配(pei)套附(fu)件(jian)均經過熱浸鍍鋅處理,每一道制作工(gong)(gong)序都有(you)嚴格的質量檢(jian)測把關,運至施工(gong)(gong)現(xian)(xian)場(chang)后(hou)(hou),在(zai)工(gong)(gong)地現(xian)(xian)場(chang)對其涂(tu)(tu)劇瀝青,進(jin)一步加(jia)(jia)強對其外(wai)觀(guan)的保護防腐,以增強其設計使用(yong)年限,后(hou)(hou)期運營過程中還可根(gen)據具(ju)體情(qing)況(kuang)在(zai)管內壁(bi)增涂(tu)(tu)瀝青涂(tu)(tu)層(ceng)對其加(jia)(jia)強養(yang)護,相(xiang)比傳(chuan)統(tong)壇工(gong)(gong)涵洞具(ju)有(you)耐久性(xing)好(hao)、養(yang)護費用(yong)低、重建率(lv)低等優點。

鐵路鋼波紋管

鐵(tie)路鋼波紋管(guan)

施工前(qian)組織測量(liang)人員根據(ju)設計文件(jian)放(fang)出管涵軸線(xian),打好(hao)中邊(bian)樁(zhuang),在涵管基礎(chu)(chu)范圍(wei)邊(bian)緣撒(sa)上白色(se)灰線(xian),測出原地(di)面高(gao)程(cheng)。基礎(chu)(chu)墊(dian)層(ceng)(ceng)填筑(zhu)基礎(chu)(chu)材料(liao)采(cai)用(yong)(yong)砂研填筑(zhu),頁層(ceng)(ceng)采(cai)用(yong)(yong)粗砂找(zhao)平。填筑(zhu)寬度為底部4.9m,兩邊(bian)按照1:1的坡度進行(xing),高(gao)度為60cm。分兩層(ceng)(ceng)填筑(zhu),每層(ceng)(ceng)30cm,分層(ceng)(ceng)碾壓密實,進行(xing)沉降量(liang)觀測,沉降量(liang)不(bu)大于2mm,基礎(chu)(chu)墊(dian)層(ceng)(ceng)填筑(zhu)基礎(chu)(chu)材料(liao)采(cai)用(yong)(yong)砂礫填筑(zhu),頂(ding)層(ceng)(ceng)采(cai)用(yong)(yong)粗砂找(zhao)平。

涵背(bei)回埴(zhi)為保證(zheng)管(guan)(guan)(guan)底的回填(tian)質(zhi)量(liang),管(guan)(guan)(guan)底楔(xie)形塊處的填(tian)筑材料采用級配良好的天然砂(sha)研或粗(cu)砂(sha)(含水(shui)量(liang)要(yao)求(qiu)為更(geng)佳含水(shui)量(liang)2%左(zuo)右(you)),人工用木(mu)棒(bang)在管(guan)(guan)(guan)身(shen)外向內(nei)側進行夯(hang)實(shi),木(mu)棒(bang)的截面尺寸為15cm×15cm左(zuo)右(you),木(mu)棒(bang)單次(ci)沖(chong)擊(ji)力應達到(dao)9kg,木(mu)棒(bang)作用點必(bi)須(xu)緊(jin)貼管(guan)(guan)(guan)身(shen),每個(ge)凹(ao)槽部(bu)位都(dou)必(bi)須(xu)夯(hang)實(shi)到(dao)位,然后用小型夯(hang)實(shi)機械斜向夯(hang)實(shi),確保管(guan)(guan)(guan)底的回填(tian)質(zhi)量(liang)。

受力(li)特性(xing)(xing)變形能(neng)(neng)(neng)(neng)力(li)強鋼(gang)波(bo)(bo)紋管涵是(shi)一種柔性(xing)(xing)結構,波(bo)(bo)紋管在結構上具有橫(heng)向補償位移的(de)優良(liang)特性(xing)(xing),可充分發揮(hui)鋼(gang)材抗(kang)(kang)(kang)拉(la)性(xing)(xing)能(neng)(neng)(neng)(neng)強、變形性(xing)(xing)能(neng)(neng)(neng)(neng)優越的(de)特點,具有較(jiao)大的(de)抗(kang)(kang)(kang)變形和抗(kang)(kang)(kang)沉(chen)降(jiang)能(neng)(neng)(neng)(neng)力(li),能(neng)(neng)(neng)(neng)夠避免上部構造物破壞等問題,因而避免了(le)(le)橋臺(tai)跳車現(xian)象,提高了(le)(le)行車的(de)舒適度與安全性(xing)(xing),解決了(le)(le)由于圬工涵洞(dong)的(de)沉(chen)降(jiang)與路基(ji)的(de)沉(chen)降(jiang)不一致的(de)問題。

公路鋼波紋管

公路鋼波紋管

工程實(shi)例應用(yong)3.1工程背景張(zhang)(家(jia)(jia)(jia)口)-石(shi)(家(jia)(jia)(jia)莊(zhuang))高(gao)速(su)公路淶源(yuan)至(zhi)淶水段(duan)位于保(bao)定地區西部(bu),是(shi)(shi)河北(bei)省規劃的“五縱、六橫、七條(tiao)線”高(gao)速(su)公路網絡中“五縱”的一部(bu)分,是(shi)(shi)溝通張(zhang)家(jia)(jia)(jia)口市和保(bao)定地區之間的一條(tiao)交通干線,起點樁號(hao)為K0+320.302,終點K44+170,全(quan)長43.850km,該路段(duan)按(an)全(quan)封閉、全(quan)立交高(gao)速(su)公路標準建設(she)。

此外,鋼(gang)波紋管涵(han)加固在多年(nian)凍土(tu)(tu)、季節性凍土(tu)(tu)、膨脹土(tu)(tu)、軟(ruan)士等(deng)特殊地區,鋼(gang)筋混凝土(tu)(tu)涵(han)洞在使用過程中通常將出現不同程度的損(sun)壞,更為嚴重的是當地基(ji)(ji)或(huo)基(ji)(ji)礎不均(jun)勻沉降將導(dao)致涵(han)洞的整體破壞,造成路基(ji)(ji)大(da)范圍的沉陷(xian),給公路行車帶來(lai)極為嚴重的安(an)全隱患。

連(lian)接方式:波紋(wen)板搭接、高強螺栓緊固、密(mi)封(feng)膠密(mi)封(feng)。(圖中(zhong):L-波長、H-波高、R-波峰曲(qu)率(lv)半(ban)徑(jing)、r-波谷(gu)曲(qu)率(lv)半(ban)徑(jing)、t-壁厚、D-管徑(jing))圖1鋼(gang)(gang)波紋(wen)管截面(mian)及(ji)波形意圖3.3施(shi)(shi)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝鋼(gang)(gang)波紋(wen)管涵(han)施(shi)(shi)工(gong)(gong)(gong)(gong)主要包括(kuo)施(shi)(shi)工(gong)(gong)(gong)(gong)放(fang)樣、基礎(chu)墊層填筑、管身安裝、涵(han)背(bei)回(hui)埴(zhi)、洞口(kou)鋪砌及(ji)護(hu)坡防護(hu)施(shi)(shi)工(gong)(gong)(gong)(gong)等1藝流程。 施(shi)(shi)工(gong)(gong)(gong)(gong)放(fang)樣對施(shi)(shi)工(gong)(gong)(gong)(gong)場地(di)進行嚴(yan)整(zheng),布(bu)置各種(zhong)材料(liao)堆放(fang)場地(di),組(zu)織所(suo)需機(ji)械設備。鋼(gang)(gang)波紋(wen)涵(han)管:hanihanbj.com


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