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衡水(shui)浩威新材料(liao)有限公司主營(ying)產品:鋼波紋管、鋼波紋涵管

開封公路鋼波紋涵管對地基承載力的要求

瀏覽:19033 發布日(ri)期:2020-08-21

施工簡單、周(zhou)期短(duan)采用鋼波紋管施工T期短(duan),土(tu)建與型材安裝可分開實施,然后進行整體拼裝。鋼波(bo)紋管涵(han)相比鋼筋混(hun)凝(ning)土涵(han),可節省工期近(jin)1個多月,以長10m的構造物為(wei)例:整(zheng)裝(zhuang)(zhuang)(zhuang)式波紋管現場安裝(zhuang)(zhuang)(zhuang)時(shi)間(jian)(jian)約為(wei)0.5d,回埴時(shi)間(jian)(jian)約為(wei)1d;拼裝(zhuang)(zhuang)(zhuang)式波紋管涵(han)現場拼裝(zhuang)(zhuang)(zhuang)時(shi)間(jian)(jian)約為(wei)2d,回填時(shi)間(jian)(jian)約為(wei)3d;

公(gong)路鋼波紋涵管(guan)對地基承載力的要求

耐久性(xing)好鋼波紋(wen)管(guan)涵一(yi)(yi)般(ban)采(cai)用工(gong)(gong)(gong)廠加(jia)工(gong)(gong)(gong)制作,出廠前涵管(guan)及配套附件均經過(guo)熱浸鍍鋅處(chu)理,每一(yi)(yi)道制作工(gong)(gong)(gong)序都有(you)(you)嚴格的(de)(de)質(zhi)量檢測把關,運至(zhi)施工(gong)(gong)(gong)現(xian)場(chang)后,在工(gong)(gong)(gong)地現(xian)場(chang)對其(qi)涂劇瀝青,進一(yi)(yi)步加(jia)強(qiang)對其(qi)外(wai)觀的(de)(de)保護防腐(fu),以增(zeng)強(qiang)其(qi)設計使用年限,后期運營過(guo)程(cheng)中還(huan)可根(gen)據(ju)具體情況在管(guan)內壁(bi)增(zeng)涂瀝青涂層對其(qi)加(jia)強(qiang)養護,相比(bi)傳統壇工(gong)(gong)(gong)涵洞具有(you)(you)耐久性(xing)好、養護費用低、重建率低等(deng)優點。

鐵路鋼波紋管

鐵路鋼波(bo)紋管

施工前組織測(ce)量(liang)(liang)人員根據設計文件放出(chu)(chu)管(guan)涵(han)軸線,打好中邊樁(zhuang),在涵(han)管(guan)基礎(chu)(chu)范圍邊緣撒上白色灰(hui)線,測(ce)出(chu)(chu)原地面高程。基礎(chu)(chu)墊(dian)層(ceng)填(tian)(tian)筑(zhu)基礎(chu)(chu)材料采(cai)用砂(sha)研填(tian)(tian)筑(zhu),頁層(ceng)采(cai)用粗(cu)砂(sha)找(zhao)平。填(tian)(tian)筑(zhu)寬度(du)為底(di)部4.9m,兩邊按照1:1的坡度(du)進(jin)行,高度(du)為60cm。分兩層(ceng)填(tian)(tian)筑(zhu),每層(ceng)30cm,分層(ceng)碾(nian)壓密實,進(jin)行沉(chen)降量(liang)(liang)觀測(ce),沉(chen)降量(liang)(liang)不大(da)于2mm,基礎(chu)(chu)墊(dian)層(ceng)填(tian)(tian)筑(zhu)基礎(chu)(chu)材料采(cai)用砂(sha)礫填(tian)(tian)筑(zhu),頂層(ceng)采(cai)用粗(cu)砂(sha)找(zhao)平。

涵背回埴為(wei)保證管(guan)底(di)的(de)回填質量(liang),管(guan)底(di)楔形塊處的(de)填筑材料采(cai)用(yong)級配良好的(de)天然(ran)砂研或粗砂(含(han)水量(liang)要求為(wei)更(geng)佳含(han)水量(liang)2%左(zuo)右),人(ren)工用(yong)木棒(bang)(bang)在管(guan)身外向(xiang)內側進行夯實(shi),木棒(bang)(bang)的(de)截(jie)面尺(chi)寸為(wei)15cm×15cm左(zuo)右,木棒(bang)(bang)單次沖擊力應達到9kg,木棒(bang)(bang)作(zuo)用(yong)點必須緊貼管(guan)身,每個(ge)凹槽部位都必須夯實(shi)到位,然(ran)后用(yong)小型夯實(shi)機(ji)械斜向(xiang)夯實(shi),確保管(guan)底(di)的(de)回填質量(liang)。

受力特性(xing)變形能(neng)(neng)力強鋼波紋管涵是一種柔性(xing)結構(gou),波紋管在結構(gou)上(shang)具有(you)橫(heng)向補償位移的(de)(de)(de)(de)優(you)良特性(xing),可充分發揮鋼材抗(kang)拉性(xing)能(neng)(neng)強、變形性(xing)能(neng)(neng)優(you)越的(de)(de)(de)(de)特點,具有(you)較大(da)的(de)(de)(de)(de)抗(kang)變形和(he)抗(kang)沉降能(neng)(neng)力,能(neng)(neng)夠(gou)避(bi)免(mian)上(shang)部構(gou)造(zao)物破壞等(deng)問題,因而(er)避(bi)免(mian)了(le)(le)橋臺(tai)跳車(che)現象,提(ti)高(gao)了(le)(le)行車(che)的(de)(de)(de)(de)舒適(shi)度與安全性(xing),解決了(le)(le)由(you)于圬工涵洞(dong)的(de)(de)(de)(de)沉降與路(lu)基(ji)的(de)(de)(de)(de)沉降不一致的(de)(de)(de)(de)問題。

公路鋼波紋管

公路鋼波紋管

工程實例應用(yong)3.1工程背景張(zhang)(家(jia)口(kou))-石(家(jia)莊)高(gao)速公路(lu)淶源(yuan)至淶水段(duan)位(wei)于保(bao)(bao)定地(di)(di)區(qu)西部,是(shi)(shi)河北省(sheng)規劃的“五縱、六橫、七條(tiao)線(xian)”高(gao)速公路(lu)網絡中“五縱”的一部分,是(shi)(shi)溝通張(zhang)家(jia)口(kou)市和(he)保(bao)(bao)定地(di)(di)區(qu)之間(jian)的一條(tiao)交通干線(xian),起(qi)點樁號為K0+320.302,終(zhong)點K44+170,全(quan)長(chang)43.850km,該路(lu)段(duan)按全(quan)封閉、全(quan)立交高(gao)速公路(lu)標準建設(she)。

此外,鋼波紋管涵加固在多(duo)年凍(dong)土(tu)(tu)、季節性凍(dong)土(tu)(tu)、膨(peng)脹土(tu)(tu)、軟士(shi)等特殊地(di)區(qu),鋼筋混凝(ning)土(tu)(tu)涵洞(dong)在使用過程中通常將出現不同程度的(de)損壞,更為嚴(yan)重(zhong)的(de)是當地(di)基或基礎不均勻沉降(jiang)將導致涵洞(dong)的(de)整體破壞,造成路(lu)基大范(fan)圍的(de)沉陷,給(gei)公(gong)路(lu)行車帶來極為嚴(yan)重(zhong)的(de)安全隱患。

連接方式:波(bo)(bo)(bo)紋(wen)板(ban)搭(da)接、高強螺栓緊固、密封膠密封。(圖中:L-波(bo)(bo)(bo)長、H-波(bo)(bo)(bo)高、R-波(bo)(bo)(bo)峰(feng)曲率(lv)半(ban)(ban)徑(jing)、r-波(bo)(bo)(bo)谷曲率(lv)半(ban)(ban)徑(jing)、t-壁厚、D-管徑(jing))圖1鋼(gang)波(bo)(bo)(bo)紋(wen)管截面及(ji)波(bo)(bo)(bo)形意圖3.3施(shi)工(gong)(gong)(gong)工(gong)(gong)(gong)藝(yi)鋼(gang)波(bo)(bo)(bo)紋(wen)管涵施(shi)工(gong)(gong)(gong)主(zhu)要包括施(shi)工(gong)(gong)(gong)放(fang)樣、基礎墊層填筑、管身安(an)裝、涵背回埴、洞(dong)口鋪砌(qi)及(ji)護坡防護施(shi)工(gong)(gong)(gong)等(deng)1藝(yi)流程。 施(shi)工(gong)(gong)(gong)放(fang)樣對施(shi)工(gong)(gong)(gong)場地進(jin)行嚴整,布置各種材(cai)料堆放(fang)場地,組織所需(xu)機械設備(bei)。鋼(gang)波(bo)(bo)(bo)紋(wen)涵管:hanihanbj.com


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