色综合久久88色综合天天_韩日美无码精品无码_插一插射一射视频_国产情侣久久久久aⅴ免费

衡水(shui)浩威新材料有限公司主營產(chan)品:鋼波紋管、鋼波紋涵管

公路鋼波紋涵管對地基承載力的要求

瀏覽:15927 發布(bu)日期:2020-08-21

施(shi)工簡單、周期短(duan)(duan)采用鋼波紋管施(shi)工T期短(duan)(duan),土(tu)建(jian)與型材安裝可分開實(shi)施(shi),然后(hou)進(jin)行(xing)整體拼裝。鋼波紋(wen)管(guan)涵相比鋼筋混(hun)凝土涵,可節省工(gong)期(qi)近1個多(duo)月,以長10m的構造物(wu)為(wei)例:整裝(zhuang)式波紋管現(xian)場(chang)安裝(zhuang)時(shi)間(jian)約為(wei)0.5d,回埴時(shi)間(jian)約為(wei)1d;拼裝(zhuang)式波紋管涵現(xian)場(chang)拼裝(zhuang)時(shi)間(jian)約為(wei)2d,回填時(shi)間(jian)約為(wei)3d;

公(gong)路(lu)鋼波紋涵管對地基承載力的要求(qiu)

耐(nai)久性(xing)好(hao)(hao)鋼波紋管涵(han)一(yi)般采用(yong)工(gong)(gong)(gong)廠(chang)加工(gong)(gong)(gong)制(zhi)作,出(chu)廠(chang)前涵(han)管及配套附件均經過(guo)熱(re)浸鍍鋅處理(li),每一(yi)道制(zhi)作工(gong)(gong)(gong)序都有嚴格的(de)(de)質量檢測把關,運至施(shi)工(gong)(gong)(gong)現場(chang)(chang)后,在工(gong)(gong)(gong)地現場(chang)(chang)對其(qi)涂(tu)劇瀝(li)(li)青,進一(yi)步加強(qiang)對其(qi)外觀的(de)(de)保護(hu)防腐,以增強(qiang)其(qi)設計使用(yong)年限,后期(qi)運營過(guo)程中還可根據(ju)具體情況(kuang)在管內壁增涂(tu)瀝(li)(li)青涂(tu)層對其(qi)加強(qiang)養(yang)(yang)護(hu),相比傳統壇工(gong)(gong)(gong)涵(han)洞(dong)具有耐(nai)久性(xing)好(hao)(hao)、養(yang)(yang)護(hu)費用(yong)低、重建(jian)率低等優點(dian)。

鐵路鋼波紋管

鐵路(lu)鋼波(bo)紋管

施工前組織測(ce)量人員根據設計文件(jian)放出(chu)管涵軸線(xian),打好中邊樁,在涵管基(ji)礎范圍邊緣撒上白色灰線(xian),測(ce)出(chu)原地面高程。基(ji)礎墊(dian)層填(tian)(tian)筑(zhu)(zhu)(zhu)基(ji)礎材(cai)料采用砂(sha)研(yan)填(tian)(tian)筑(zhu)(zhu)(zhu),頁層采用粗砂(sha)找(zhao)平(ping)。填(tian)(tian)筑(zhu)(zhu)(zhu)寬(kuan)度(du)為底部4.9m,兩(liang)邊按照1:1的坡(po)度(du)進行,高度(du)為60cm。分兩(liang)層填(tian)(tian)筑(zhu)(zhu)(zhu),每層30cm,分層碾壓(ya)密實,進行沉(chen)降量觀測(ce),沉(chen)降量不大于2mm,基(ji)礎墊(dian)層填(tian)(tian)筑(zhu)(zhu)(zhu)基(ji)礎材(cai)料采用砂(sha)礫填(tian)(tian)筑(zhu)(zhu)(zhu),頂層采用粗砂(sha)找(zhao)平(ping)。

涵背回埴(zhi)為保證管(guan)(guan)底的(de)回填(tian)質(zhi)量(liang)(liang)(liang),管(guan)(guan)底楔形塊處(chu)的(de)填(tian)筑(zhu)材料采(cai)用(yong)(yong)級配良好的(de)天然砂研(yan)或粗砂(含水量(liang)(liang)(liang)要(yao)求為更(geng)佳含水量(liang)(liang)(liang)2%左右),人工用(yong)(yong)木(mu)棒在管(guan)(guan)身外(wai)向(xiang)(xiang)內(nei)側進行(xing)夯實(shi),木(mu)棒的(de)截面尺寸(cun)為15cm×15cm左右,木(mu)棒單次(ci)沖擊力(li)應(ying)達(da)到9kg,木(mu)棒作用(yong)(yong)點(dian)必須(xu)緊貼管(guan)(guan)身,每(mei)個凹槽部位都(dou)必須(xu)夯實(shi)到位,然后用(yong)(yong)小型夯實(shi)機械斜向(xiang)(xiang)夯實(shi),確保管(guan)(guan)底的(de)回填(tian)質(zhi)量(liang)(liang)(liang)。

受力特(te)性(xing)變形(xing)(xing)能(neng)力強(qiang)鋼波紋管(guan)涵(han)是一(yi)種(zhong)柔性(xing)結(jie)構(gou),波紋管(guan)在結(jie)構(gou)上具(ju)有(you)橫向補償位移的優良特(te)性(xing),可充分發(fa)揮鋼材抗(kang)拉性(xing)能(neng)強(qiang)、變形(xing)(xing)性(xing)能(neng)優越(yue)的特(te)點,具(ju)有(you)較大的抗(kang)變形(xing)(xing)和抗(kang)沉降能(neng)力,能(neng)夠避(bi)免上部構(gou)造物(wu)破壞等(deng)問(wen)題,因而避(bi)免了橋(qiao)臺(tai)跳車(che)(che)現象,提高了行車(che)(che)的舒適(shi)度與安全(quan)性(xing),解決了由于圬工涵(han)洞的沉降與路基的沉降不(bu)一(yi)致(zhi)的問(wen)題。

公路鋼波紋管

公路鋼波紋管

工(gong)程實例應用(yong)3.1工(gong)程背(bei)景張(家(jia)口)-石(shi)(家(jia)莊(zhuang))高(gao)速公(gong)路(lu)淶(lai)源至淶(lai)水段位于保定(ding)地(di)區(qu)西部,是河北省規劃的(de)“五縱、六橫、七條線”高(gao)速公(gong)路(lu)網(wang)絡中“五縱”的(de)一部分,是溝通(tong)(tong)張家(jia)口市(shi)和保定(ding)地(di)區(qu)之間的(de)一條交(jiao)通(tong)(tong)干(gan)線,起點樁號為K0+320.302,終點K44+170,全長43.850km,該路(lu)段按全封閉、全立交(jiao)高(gao)速公(gong)路(lu)標準建設。

此外,鋼波紋管涵加(jia)固在多年凍(dong)土、季節(jie)性(xing)凍(dong)土、膨(peng)脹土、軟(ruan)士等特殊(shu)地區,鋼筋混(hun)凝土涵洞在使用過程中通常將出現不同程度的損(sun)壞,更為(wei)嚴(yan)重的是當地基或基礎(chu)不均勻沉(chen)降將導致涵洞的整(zheng)體破壞,造成路基大(da)范(fan)圍的沉(chen)陷,給公路行車帶來極(ji)為(wei)嚴(yan)重的安全隱患(huan)。

連(lian)接(jie)方(fang)式:波(bo)(bo)(bo)紋板(ban)搭接(jie)、高強螺栓緊固、密封(feng)膠密封(feng)。(圖中:L-波(bo)(bo)(bo)長、H-波(bo)(bo)(bo)高、R-波(bo)(bo)(bo)峰曲率半徑(jing)、r-波(bo)(bo)(bo)谷(gu)曲率半徑(jing)、t-壁厚、D-管(guan)徑(jing))圖1鋼(gang)波(bo)(bo)(bo)紋管(guan)截面及(ji)(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)紋管(guan)涵施(shi)工(gong)(gong)(gong)主要包括(kuo)施(shi)工(gong)(gong)(gong)放樣(yang)、基礎墊(dian)層填筑、管(guan)身安裝、涵背回埴、洞口鋪砌及(ji)(ji)護坡(po)防護施(shi)工(gong)(gong)(gong)等1藝(yi)流程。 施(shi)工(gong)(gong)(gong)放樣(yang)對施(shi)工(gong)(gong)(gong)場地進行嚴整,布置各(ge)種(zhong)材料(liao)堆放場地,組織所需機械設備。鋼(gang)波(bo)(bo)(bo)紋涵管(guan):hanihanbj.com


[返回]   
分享此文章:

版權(quan)所有:衡(heng)水浩威新材料有限公司   ICP備案(an)/許可證號(hao):   技術支持(chi):