海河南道道路工程設計探討

時間:2022-08-23 11:27:04

導語:海河(he)南(nan)道(dao)(dao)道(dao)(dao)路工程設計探討一(yi)文來源于(yu)網友上(shang)傳,不(bu)代表本站觀點,若需要原創文章可咨詢(xun)客服老(lao)師,歡(huan)迎參考。

海河南道道路工程設計探討

摘要海河南道是國家會展中心(天津)配套的基礎設施建設項目,是國家會展中心建設順利完成的重要保證。海河南道起于辛柴路,止于衛津河西路,路線全長約2735m。基于此,文章圍繞海河南道道路工程設計進(jin)行分析,闡述了其項目背景(jing)、工程(cheng)概況(kuang)、工程(cheng)地質等(deng)情(qing)況(kuang),并從平面(mian)設(she)計、縱斷面(mian)設(she)計、橫(heng)斷面(mian)設(she)計、路基路面(mian)設(she)計、現狀管(guan)線保護工程(cheng)方面(mian),介紹了此(ci)項目工程(cheng)的總體設(she)計情(qing)況(kuang),僅供參(can)考(kao)。

關鍵詞:市(shi)政道路;道路設(she)計;路基處(chu)理(li);海河(he)南道

1項目背景

海(hai)(hai)河(he)(he)中(zhong)(zhong)(zhong)(zhong)游地(di)(di)區(qu)(qu)(qu)(qu)(qu)作為(wei)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)城(cheng)區(qu)(qu)(qu)(qu)(qu)和濱海(hai)(hai)新區(qu)(qu)(qu)(qu)(qu)相(xiang)向拓展(zhan)(zhan)(zhan)(zhan)(zhan)的(de)(de)中(zhong)(zhong)(zhong)(zhong)間地(di)(di)帶(dai),是承(cheng)接“雙城(cheng)”產(chan)業及功能(neng)外(wai)(wai)溢的(de)(de)重(zhong)要(yao)(yao)載體(ti)(ti),未來將發(fa)展(zhan)(zhan)(zhan)(zhan)(zhan)成(cheng)(cheng)為(wei)天(tian)(tian)津(jin)(jin)(jin)(jin)市(shi)(shi)的(de)(de)行(xing)政文化(hua)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)和我國(guo)(guo)(guo)北方重(zhong)要(yao)(yao)的(de)(de)國(guo)(guo)(guo)際交(jiao)(jiao)流(liu)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)。海(hai)(hai)河(he)(he)中(zhong)(zhong)(zhong)(zhong)游地(di)(di)區(qu)(qu)(qu)(qu)(qu)四(si)至(zhi)(zhi)范圍:北至(zhi)(zhi)津(jin)(jin)(jin)(jin)塘(tang)公路(lu)(lu)(lu)(lu)、南(nan)(nan)(nan)至(zhi)(zhi)天(tian)(tian)津(jin)(jin)(jin)(jin)大(da)道(dao)(dao)、東至(zhi)(zhi)漢港(gang)公路(lu)(lu)(lu)(lu)、西(xi)至(zhi)(zhi)外(wai)(wai)環(huan)南(nan)(nan)(nan)路(lu)(lu)(lu)(lu),面(mian)(mian)積(ji)約(yue)100km2。《天(tian)(tian)津(jin)(jin)(jin)(jin)市(shi)(shi)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)、體(ti)(ti)育和文化(hua)設施建(jian)(jian)設規(gui)劃(hua)(hua)》提(ti)出,從2011年起,天(tian)(tian)津(jin)(jin)(jin)(jin)市(shi)(shi)規(gui)劃(hua)(hua)建(jian)(jian)設一批(pi)專業化(hua)、規(gui)模化(hua)的(de)(de)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin),到(dao)2015年,將建(jian)(jian)成(cheng)(cheng)我國(guo)(guo)(guo)重(zhong)要(yao)(yao)的(de)(de)國(guo)(guo)(guo)際會(hui)(hui)(hui)(hui)(hui)(hui)議舉(ju)(ju)辦(ban)城(cheng)市(shi)(shi)和會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)城(cheng)市(shi)(shi),具備承(cheng)接國(guo)(guo)(guo)內外(wai)(wai)會(hui)(hui)(hui)(hui)(hui)(hui)議、展(zhan)(zhan)(zhan)(zhan)(zhan)覽活(huo)動的(de)(de)能(neng)力。目前,全市(shi)(shi)可供(gong)舉(ju)(ju)辦(ban)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)的(de)(de)場地(di)(di)包括天(tian)(tian)津(jin)(jin)(jin)(jin)梅江會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)、天(tian)(tian)津(jin)(jin)(jin)(jin)濱海(hai)(hai)國(guo)(guo)(guo)際會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)、天(tian)(tian)津(jin)(jin)(jin)(jin)體(ti)(ti)育展(zhan)(zhan)(zhan)(zhan)(zhan)覽中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)、天(tian)(tian)津(jin)(jin)(jin)(jin)國(guo)(guo)(guo)際展(zhan)(zhan)(zhan)(zhan)(zhan)覽中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)等。商務部與天(tian)(tian)津(jin)(jin)(jin)(jin)市(shi)(shi)合(he)作建(jian)(jian)設國(guo)(guo)(guo)家(jia)(jia)(jia)級(ji)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)(以下簡稱天(tian)(tian)津(jin)(jin)(jin)(jin)國(guo)(guo)(guo)家(jia)(jia)(jia)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)),該(gai)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)是繼上海(hai)(hai)、廣州之后商務部確定的(de)(de)第三個國(guo)(guo)(guo)家(jia)(jia)(jia)級(ji)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin),建(jian)(jian)成(cheng)(cheng)后將成(cheng)(cheng)為(wei)服務中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)(guo)北方、輻(fu)射東北亞地(di)(di)區(qu)(qu)(qu)(qu)(qu)的(de)(de)國(guo)(guo)(guo)際一流(liu)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)。天(tian)(tian)津(jin)(jin)(jin)(jin)國(guo)(guo)(guo)家(jia)(jia)(jia)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)選址位于(yu)津(jin)(jin)(jin)(jin)南(nan)(nan)(nan)區(qu)(qu)(qu)(qu)(qu)海(hai)(hai)河(he)(he)中(zhong)(zhong)(zhong)(zhong)游南(nan)(nan)(nan)岸(an)地(di)(di)區(qu)(qu)(qu)(qu)(qu),四(si)至(zhi)(zhi)范圍:西(xi)起寧靜高(gao)速、東至(zhi)(zhi)衛津(jin)(jin)(jin)(jin)河(he)(he)西(xi)路(lu)(lu)(lu)(lu)、北至(zhi)(zhi)海(hai)(hai)河(he)(he)南(nan)(nan)(nan)道(dao)(dao)、南(nan)(nan)(nan)至(zhi)(zhi)天(tian)(tian)津(jin)(jin)(jin)(jin)大(da)道(dao)(dao),占地(di)(di)總面(mian)(mian)積(ji)約(yue)3.75km2,其中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)(guo)展(zhan)(zhan)(zhan)(zhan)(zhan)區(qu)(qu)(qu)(qu)(qu)占地(di)(di)面(mian)(mian)積(ji)約(yue)2.30km2,平衡地(di)(di)塊(kuai)占地(di)(di)面(mian)(mian)積(ji)約(yue)1.45km2。隨著國(guo)(guo)(guo)家(jia)(jia)(jia)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)的(de)(de)開(kai)發(fa)建(jian)(jian)設,城(cheng)市(shi)(shi)規(gui)模不斷擴(kuo)大(da),區(qu)(qu)(qu)(qu)(qu)域交(jiao)(jiao)通(tong)量日(ri)益增加(jia),相(xiang)比國(guo)(guo)(guo)家(jia)(jia)(jia)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)的(de)(de)高(gao)規(gui)劃(hua)(hua),道(dao)(dao)路(lu)(lu)(lu)(lu)交(jiao)(jiao)通(tong)系統相(xiang)對(dui)落(luo)后,制約(yue)了國(guo)(guo)(guo)民經(jing)濟(ji)的(de)(de)持(chi)續(xu)發(fa)展(zhan)(zhan)(zhan)(zhan)(zhan)和人民生(sheng)活(huo)水平的(de)(de)提(ti)高(gao)。為(wei)滿足區(qu)(qu)(qu)(qu)(qu)域發(fa)展(zhan)(zhan)(zhan)(zhan)(zhan)的(de)(de)要(yao)(yao)求,相(xiang)關市(shi)(shi)政配套工(gong)程(cheng)的(de)(de)實(shi)施已迫在眉睫(jie)[1]。在上述(shu)背景下提(ti)出了建(jian)(jian)設海(hai)(hai)河(he)(he)南(nan)(nan)(nan)道(dao)(dao)(辛柴(chai)路(lu)(lu)(lu)(lu)—衛津(jin)(jin)(jin)(jin)河(he)(he)西(xi)路(lu)(lu)(lu)(lu))工(gong)程(cheng)。通(tong)過(guo)此工(gong)程(cheng)的(de)(de)建(jian)(jian)設,解決該(gai)地(di)(di)區(qu)(qu)(qu)(qu)(qu)的(de)(de)居民出行(xing)問(wen)題(ti)及會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)交(jiao)(jiao)通(tong)配套問(wen)題(ti),從而(er)提(ti)高(gao)該(gai)地(di)(di)區(qu)(qu)(qu)(qu)(qu)市(shi)(shi)民的(de)(de)生(sheng)活(huo)質(zhi)量,實(shi)現(xian)地(di)(di)區(qu)(qu)(qu)(qu)(qu)經(jing)濟(ji)的(de)(de)可持(chi)續(xu)發(fa)展(zhan)(zhan)(zhan)(zhan)(zhan)[2]。海(hai)(hai)河(he)(he)南(nan)(nan)(nan)道(dao)(dao)起于(yu)辛柴(chai)路(lu)(lu)(lu)(lu),止于(yu)衛津(jin)(jin)(jin)(jin)河(he)(he)西(xi)路(lu)(lu)(lu)(lu),路(lu)(lu)(lu)(lu)線全長約(yue)2735m。自西(xi)向東分別與辛柴(chai)路(lu)(lu)(lu)(lu)、寧靜東輔道(dao)(dao)、國(guo)(guo)(guo)展(zhan)(zhan)(zhan)(zhan)(zhan)路(lu)(lu)(lu)(lu)相(xiang)交(jiao)(jiao)。海(hai)(hai)河(he)(he)南(nan)(nan)(nan)道(dao)(dao)規(gui)劃(hua)(hua)線位周邊遍(bian)布魚塘(tang),無(wu)現(xian)狀道(dao)(dao)路(lu)(lu)(lu)(lu)。海(hai)(hai)河(he)(he)南(nan)(nan)(nan)道(dao)(dao)北側為(wei)海(hai)(hai)河(he)(he),南(nan)(nan)(nan)側與國(guo)(guo)(guo)家(jia)(jia)(jia)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)相(xiang)鄰,是國(guo)(guo)(guo)家(jia)(jia)(jia)會(hui)(hui)(hui)(hui)(hui)(hui)展(zhan)(zhan)(zhan)(zhan)(zhan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)(xin)(xin)(xin)配套道(dao)(dao)路(lu)(lu)(lu)(lu)。此次(ci)工(gong)程(cheng)結合(he)天(tian)(tian)津(jin)(jin)(jin)(jin)市(shi)(shi)津(jin)(jin)(jin)(jin)南(nan)(nan)(nan)區(qu)(qu)(qu)(qu)(qu)城(cheng)市(shi)(shi)總體(ti)(ti)規(gui)劃(hua)(hua)的(de)(de)階段成(cheng)(cheng)果,擬對(dui)海(hai)(hai)河(he)(he)南(nan)(nan)(nan)道(dao)(dao)(辛柴(chai)路(lu)(lu)(lu)(lu)—衛津(jin)(jin)(jin)(jin)河(he)(he)西(xi)路(lu)(lu)(lu)(lu))進行(xing)道(dao)(dao)路(lu)(lu)(lu)(lu)設計。

2工程概況及技術標準

2.1工程概況

海河(he)南道(辛(xin)柴(chai)路(lu)(lu)—衛(wei)津(jin)(jin)河(he)西(xi)路(lu)(lu))工程,起點為辛(xin)柴(chai)路(lu)(lu),終點至(zhi)衛(wei)津(jin)(jin)河(he)西(xi)路(lu)(lu)。路(lu)(lu)線全長約2735m。辛(xin)柴(chai)路(lu)(lu)至(zhi)國展路(lu)(lu)段紅線寬度(du)45m,國展路(lu)(lu)至(zhi)衛(wei)津(jin)(jin)河(he)西(xi)路(lu)(lu)段紅線寬度(du)30m。道路(lu)(lu)等(deng)級為城(cheng)市次干道。

2.2技術標準

(1)道(dao)(dao)路等級:城市(shi)次干路;(2)設計(ji)速度(du):40km/h;(3)路面類型:瀝青混凝土路面;(4)道(dao)(dao)路路面使用年限:15年;(5)荷載標(biao)準:BZZ-100kN;(6)路面橫坡(po):車行(xing)道(dao)(dao)1.5%,坡(po)向外側;人行(xing)道(dao)(dao)1%,坡(po)向車行(xing)道(dao)(dao);(7)地(di)震基(ji)本烈度(du):8度(du),地(di)震動峰值加速度(du)0.2g;(8)線形技術指(zhi)標(biao)標(biao)準如表1所示[3]。

3工程地質概況

擬(ni)建場(chang)(chang)地(di)(di)(di)位于(yu)(yu)華北平(ping)原北部(bu),屬濱海沖積平(ping)原,地(di)(di)(di)貌單(dan)一(yi)。擬(ni)建場(chang)(chang)地(di)(di)(di)寧靜(jing)高速西側現狀(zhuang)為(wei)(wei)魚塘、蘆(lu)葦地(di)(di)(di)及(ji)現狀(zhuang)泵(beng)站,寧靜(jing)高速東側場(chang)(chang)地(di)(di)(di)原為(wei)(wei)魚塘,勘察進場(chang)(chang)前場(chang)(chang)地(di)(di)(di)已被推平(ping)整(zheng)理,道路整(zheng)體地(di)(di)(di)勢有較大(da)起(qi)伏(fu)。擬(ni)建場(chang)(chang)地(di)(di)(di)屬津(jin)南區(qu)咸水(shui)沽鎮,根據《中國地(di)(di)(di)震(zhen)(zhen)動參數區(qu)劃圖》(GB18306—2015)抗震(zhen)(zhen)設防烈度為(wei)(wei)8度,基(ji)(ji)本(ben)地(di)(di)(di)震(zhen)(zhen)動峰值加速度為(wei)(wei)0.20g,根據《建筑抗震(zhen)(zhen)設計(ji)規范》(GB50011—2010)(2016年版),本(ben)場(chang)(chang)地(di)(di)(di)設計(ji)地(di)(di)(di)震(zhen)(zhen)分組(zu)為(wei)(wei)第二組(zu),設計(ji)基(ji)(ji)本(ben)地(di)(di)(di)震(zhen)(zhen)基(ji)(ji)本(ben)加速度為(wei)(wei)0.20g。勘探期間實測場(chang)(chang)地(di)(di)(di)地(di)(di)(di)下(xia)(xia)水(shui)位如下(xia)(xia):初(chu)見水(shui)位埋深0.80~1.50m,標高-0.78~1.00m;穩定(ding)水(shui)位埋深0.50~1.30m,標高-0.49~1.32m。場(chang)(chang)地(di)(di)(di)淺層地(di)(di)(di)下(xia)(xia)水(shui)屬于(yu)(yu)孔隙潛水(shui)類型,主(zhu)要以大(da)氣降水(shui)補給,蒸發(fa)形(xing)式(shi)排泄為(wei)(wei)主(zhu),水(shui)位隨季節(jie)變化[4]。根據區(qu)域(yu)水(shui)文地(di)(di)(di)質資料,地(di)(di)(di)下(xia)(xia)水(shui)位年變化幅度在0.50~1.00m。

4工程總體設計

4.1平面設計

(1)線(xian)(xian)位設計。海(hai)(hai)(hai)河(he)南(nan)道(dao)(dao)(dao)(辛柴路(lu)—衛津(jin)河(he)西(xi)路(lu))工(gong)程,起點為辛柴路(lu),終點至衛津(jin)河(he)西(xi)路(lu)。此工(gong)程根據規(gui)(gui)劃(hua)線(xian)(xian)位進(jin)行平面設計,采用1990年天(tian)津(jin)市任意直角坐標系,1972年大沽高(gao)程系,2015年成果。平曲線(xian)(xian)表(biao)(biao)如表(biao)(biao)2所示。(2)道(dao)(dao)(dao)路(lu)交(jiao)叉(cha)口(kou)設計。海(hai)(hai)(hai)河(he)南(nan)道(dao)(dao)(dao)與(yu)寧(ning)靜高(gao)速公(gong)路(lu)及會展(zhan)海(hai)(hai)(hai)河(he)通(tong)道(dao)(dao)(dao)相(xiang)(xiang)交(jiao)處規(gui)(gui)劃(hua)為寧(ning)靜高(gao)速公(gong)路(lu)及會展(zhan)海(hai)(hai)(hai)河(he)通(tong)道(dao)(dao)(dao)上跨海(hai)(hai)(hai)河(he)南(nan)道(dao)(dao)(dao)的分離式(shi)立交(jiao);海(hai)(hai)(hai)河(he)南(nan)道(dao)(dao)(dao)與(yu)其他道(dao)(dao)(dao)路(lu)相(xiang)(xiang)交(jiao)均規(gui)(gui)劃(hua)為一般平面交(jiao)叉(cha)路(lu)口(kou)。平面交(jiao)叉(cha)口(kou)交(jiao)通(tong)組織方式(shi)如表(biao)(biao)3所示。

4.2縱斷面設計

縱斷面(mian)設(she)計(ji)綜合考慮相交現(xian)狀道路(lu)高程、寧靜高速橋下凈(jing)空要求及河道要求。以(yi)接(jie)順現(xian)狀辛柴路(lu)、國瑞路(lu)作(zuo)為(wei)豎向控制高程。縱斷面(mian)線(xian)(xian)形(xing)設(she)計(ji)時充分與地形(xing)相適應,設(she)計(ji)成(cheng)視覺(jue)連續、平(ping)順而圓滑的線(xian)(xian)形(xing),避免在短距離內出現(xian)頻繁起伏。豎曲線(xian)(xian)半(ban)徑(jing)的選用(yong),以(yi)滿足駕(jia)駛人員視覺(jue)要求和(he)路(lu)容美觀為(wei)宜[5]。

4.3橫(heng)斷面設計(ji)

海河南(nan)道(dao)(dao)道(dao)(dao)路(lu)紅(hong)線分(fen)為兩(liang)種情況(kuang),辛柴路(lu)至(zhi)國展路(lu)段,紅(hong)線寬45m,國展路(lu)至(zhi)衛津河段,紅(hong)線寬30m。30m橫(heng)斷面方(fang)案(an)如圖(tu)1所示,具體(ti)布設:3m(人行(xing)道(dao)(dao))+2.5(非(fei)機(ji)動(dong)車道(dao)(dao))+0.5m(隔(ge)離(li)護欄)+7.5m(機(ji)動(dong)車道(dao)(dao))+3m(中(zhong)央(yang)分(fen)隔(ge)帶)+7.5m(機(ji)動(dong)車道(dao)(dao))+0.5m(隔(ge)離(li)護欄)+2.5m(非(fei)機(ji)動(dong)車道(dao)(dao))+3m(人行(xing)道(dao)(dao))。45m橫(heng)斷面方(fang)案(an)如圖(tu)2所示,具體(ti)布設:4m(人行(xing)道(dao)(dao))+7.5m(輔道(dao)(dao))+3m(側分(fen)帶)+7.5m(機(ji)動(dong)車道(dao)(dao))+1m(隔(ge)離(li)護欄)+7.5m(機(ji)動(dong)車道(dao)(dao))+3m(側分(fen)帶)+7.5m(輔道(dao)(dao))+4m(人行(xing)道(dao)(dao))。車行(xing)道(dao)(dao)道(dao)(dao)路(lu)橫(heng)坡為單向(xiang)(xiang)1.5%,坡向(xiang)(xiang)向(xiang)(xiang)外;人行(xing)道(dao)(dao)為單向(xiang)(xiang)1%,坡向(xiang)(xiang)向(xiang)(xiang)內。車行(xing)道(dao)(dao)采用(yong)直線型路(lu)拱。

4.4路基、路面設計(ji)

4.4.1路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)處(chu)理(li)(li)此工程(cheng)沿線遍(bian)布(bu)魚(yu)(yu)塘,路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)處(chu)理(li)(li)方式(shi)視具體情況(kuang)而定。(1)一般(ban)路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)段(duan)(duan)。①填(tian)(tian)(tian)(tian)土(tu)(tu)(tu)(tu)高(gao)(gao)(gao)度(du)>1.51m。路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)清(qing)表(biao)(biao)30cm,然后(hou)(hou)采(cai)用5%灰(hui)土(tu)(tu)(tu)(tu)回填(tian)(tian)(tian)(tian)至(zhi)路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)頂(ding)以(yi)(yi)下(xia)80cm,其(qi)(qi)上填(tian)(tian)(tian)(tian)筑40cm集配碎(sui)石+40cm8%灰(hui)土(tu)(tu)(tu)(tu),其(qi)(qi)上再施(shi)作(zuo)(zuo)(zuo)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou)。②填(tian)(tian)(tian)(tian)土(tu)(tu)(tu)(tu)高(gao)(gao)(gao)度(du)<1.51m。路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)清(qing)表(biao)(biao)到設計(ji)高(gao)(gao)(gao)程(cheng)以(yi)(yi)下(xia)1.51m處(chu),然后(hou)(hou)填(tian)(tian)(tian)(tian)筑40cm集配碎(sui)石+40cm8%灰(hui)土(tu)(tu)(tu)(tu),其(qi)(qi)上再施(shi)作(zuo)(zuo)(zuo)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou)。(2)特(te)殊路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)段(duan)(duan)。①軟(ruan)土(tu)(tu)(tu)(tu)地(di)(di)基(ji)(ji)。首(shou)先(xian)對路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)進行(xing)(xing)清(qing)淤(yu)(yu)(yu),若清(qing)淤(yu)(yu)(yu)以(yi)(yi)后(hou)(hou)填(tian)(tian)(tian)(tian)土(tu)(tu)(tu)(tu)高(gao)(gao)(gao)度(du)>2.71m,則首(shou)先(xian)填(tian)(tian)(tian)(tian)筑80cm山(shan)皮土(tu)(tu)(tu)(tu),其(qi)(qi)上填(tian)(tian)(tian)(tian)筑5%灰(hui)土(tu)(tu)(tu)(tu)至(zhi)路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)頂(ding)以(yi)(yi)下(xia)80cm,其(qi)(qi)上再填(tian)(tian)(tian)(tian)筑40cm集配碎(sui)石+40cm8%灰(hui)土(tu)(tu)(tu)(tu),其(qi)(qi)上再施(shi)作(zuo)(zuo)(zuo)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou);若清(qing)淤(yu)(yu)(yu)后(hou)(hou)填(tian)(tian)(tian)(tian)土(tu)(tu)(tu)(tu)高(gao)(gao)(gao)度(du)<2.71m,則清(qing)除設計(ji)標高(gao)(gao)(gao)以(yi)(yi)下(xia)2.71m范圍內的(de)(de)填(tian)(tian)(tian)(tian)土(tu)(tu)(tu)(tu),首(shou)先(xian)填(tian)(tian)(tian)(tian)筑80cm山(shan)皮土(tu)(tu)(tu)(tu),其(qi)(qi)上填(tian)(tian)(tian)(tian)筑40cm5%灰(hui)土(tu)(tu)(tu)(tu),其(qi)(qi)上填(tian)(tian)(tian)(tian)筑40cm集配碎(sui)石+40cm8%灰(hui)土(tu)(tu)(tu)(tu),其(qi)(qi)上再施(shi)作(zuo)(zuo)(zuo)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou)。處(chu)理(li)(li)后(hou)(hou)的(de)(de)路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)頂(ding)面(mian)(mian)回彈模量值(zhi)Eo≥30MPa。②魚(yu)(yu)塘。魚(yu)(yu)塘段(duan)(duan)處(chu)理(li)(li)時(shi),若占壓(ya)魚(yu)(yu)塘面(mian)(mian)積較大,將魚(yu)(yu)塘邊的(de)(de)田埂推平并將魚(yu)(yu)塘內的(de)(de)水(shui)全(quan)部(bu)抽干;若占壓(ya)魚(yu)(yu)塘面(mian)(mian)積較小(xiao),則在魚(yu)(yu)塘中打土(tu)(tu)(tu)(tu)壩(ba),抽干道(dao)(dao)路(lu)(lu)(lu)(lu)(lu)一側的(de)(de)池水(shui),之后(hou)(hou)按照(zhao)軟(ruan)土(tu)(tu)(tu)(tu)地(di)(di)基(ji)(ji)處(chu)理(li)(li)方式(shi)對地(di)(di)基(ji)(ji)進行(xing)(xing)處(chu)理(li)(li)。(3)人行(xing)(xing)道(dao)(dao)路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)處(chu)理(li)(li)。首(shou)先(xian)清(qing)除設計(ji)標高(gao)(gao)(gao)以(yi)(yi)下(xia)69cm范圍內地(di)(di)表(biao)(biao)土(tu)(tu)(tu)(tu),并進行(xing)(xing)碾壓(ya)[壓(ya)實度(du)要(yao)求(qiu)(qiu)參照(zhao)路(lu)(lu)(lu)(lu)(lu)基(ji)(ji)壓(ya)實度(du)及強度(du)(CBR)值(zhi)表(biao)(biao)],然后(hou)(hou)填(tian)(tian)(tian)(tian)筑8%灰(hui)土(tu)(tu)(tu)(tu)(分層(ceng)填(tian)(tian)(tian)(tian)筑,每層(ceng)灰(hui)土(tu)(tu)(tu)(tu)厚(hou)度(du)15cm)至(zhi)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou)層(ceng)底,其(qi)(qi)上施(shi)作(zuo)(zuo)(zuo)人行(xing)(xing)道(dao)(dao)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou)層(ceng)。4.4.2路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou)設計(ji)(1)車(che)行(xing)(xing)道(dao)(dao)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou)。此項(xiang)目道(dao)(dao)路(lu)(lu)(lu)(lu)(lu)沿線為(wei)會(hui)(hui)展中心及會(hui)(hui)展平衡(heng)區,平時(shi)通(tong)行(xing)(xing)車(che)輛以(yi)(yi)小(xiao)汽車(che)為(wei)主,在會(hui)(hui)展舉辦展覽(lan)時(shi)還(huan)應當考慮(lv)大型貨車(che)布(bu)撤(che)展的(de)(de)需求(qiu)(qiu)。綜合(he)考慮(lv)各項(xiang)需求(qiu)(qiu),擬定以(yi)(yi)下(xia)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou):4cm細(xi)粒式(shi)瀝(li)青(qing)混(hun)(hun)凝(ning)土(tu)(tu)(tu)(tu)(AC-13C,SBS改性(xing));6cm中粒式(shi)瀝(li)青(qing)混(hun)(hun)凝(ning)土(tu)(tu)(tu)(tu)(AC-20C,抗車(che)轍劑);10cm密(mi)集配瀝(li)青(qing)碎(sui)石(ATB-30);18cm水(shui)泥穩定碎(sui)石(3.5MPa/7d,骨架密(mi)實型);18cm水(shui)泥穩定碎(sui)石(3.0MPa/7d,骨架密(mi)實型);15cm石灰(hui)土(tu)(tu)(tu)(tu)(12%)。(2)人行(xing)(xing)道(dao)(dao)鋪裝結(jie)構(gou)(gou)(gou)(gou)(gou)。綜合(he)考慮(lv)各項(xiang)需求(qiu)(qiu),擬定以(yi)(yi)下(xia)路(lu)(lu)(lu)(lu)(lu)面(mian)(mian)結(jie)構(gou)(gou)(gou)(gou)(gou):6cm透水(shui)磚;3cm中砂墊(dian)層(ceng);15cm透水(shui)混(hun)(hun)凝(ning)土(tu)(tu)(tu)(tu);15cm碎(sui)石墊(dian)層(ceng);總厚(hou)度(du)39cm。

4.5現狀(zhuang)管線保護工程(cheng)

此(ci)(ci)工(gong)(gong)程K0+040樁(zhuang)(zhuang)號(hao)(hao)附近地下(xia)埋(mai)有(you)Φ200航煤(mei)(mei)油(you)(you)管線(xian),與(yu)道(dao)路(lu)(lu)走(zou)向斜(xie)交,K0+428樁(zhuang)(zhuang)號(hao)(hao)地下(xia)埋(mai)有(you)航煤(mei)(mei)油(you)(you)管線(xian),與(yu)道(dao)路(lu)(lu)走(zou)向相垂(chui)直(zhi)。此(ci)(ci)工(gong)(gong)程施工(gong)(gong)過(guo)程中需要(yao)對現狀航煤(mei)(mei)油(you)(you)管線(xian)進行(xing)保護(hu)(hu),具(ju)體保護(hu)(hu)方案由管線(xian)產權所屬單位出(chu)具(ju)。K0+551樁(zhuang)(zhuang)號(hao)(hao)地下(xia)埋(mai)有(you)110kV電力(li)管線(xian),與(yu)道(dao)路(lu)(lu)走(zou)向相垂(chui)直(zhi),在(zai)施工(gong)(gong)過(guo)程中需要(yao)采(cai)取措施進行(xing)保護(hu)(hu)。K0+585樁(zhuang)(zhuang)號(hao)(hao)地下(xia)埋(mai)有(you)Φ1000天(tian)然氣(qi)管線(xian),與(yu)道(dao)路(lu)(lu)走(zou)向相垂(chui)直(zhi)。此(ci)(ci)工(gong)(gong)程中通過(guo)施作蓋(gai)板涵對燃氣(qi)管線(xian)進行(xing)保護(hu)(hu)。

5結束語

海河南(nan)道的(de)(de)建成通(tong)車能夠進(jin)一步(bu)完善國(guo)家(jia)(jia)會(hui)展(zhan)中心的(de)(de)道路(lu)交通(tong)、市政基(ji)礎設施條件,解(jie)(jie)決周(zhou)邊(bian)居民快速出行難題,梳理(li)分解(jie)(jie)周(zhou)邊(bian)地塊(kuai),促(cu)進(jin)國(guo)家(jia)(jia)會(hui)展(zhan)中心的(de)(de)下(xia)一步(bu)建設和開(kai)發,使區域(yu)服務國(guo)家(jia)(jia)會(hui)展(zhan)中心和周(zhou)邊(bian)居民的(de)(de)功能得以更好地實(shi)現。

參考文獻

[1]張雪嬌.市(shi)政道(dao)路工程路基路面的規劃設計分析[J].全面腐蝕控制(zhi),2021,35(4):40-41,44.

[2]關(guan)華.道(dao)路工程(cheng)地質勘察(cha)設計(ji)重點(dian)及(ji)有效措施研究[J].工程(cheng)技術研究,2021,6(13):212-213.

[3]張(zhang)祥.道路建設項目設計階(jie)段成本管理(li)研究(jiu)[D].武漢(han):武漢(han)工程大學,2020.

[4]崔德洪.道路工程(cheng)設計(ji)中的缺陷及(ji)改(gai)善措施[J].工程(cheng)技術(shu)研究,2021,6(6):208-209.

[5]謝庚玉.市政道路工(gong)程平面交叉口設計思路與應用[J].住宅與房地(di)產,2020(29):191,193.

作者:云夢宇 單位:中國市政工程華北設計研究總(zong)院(yuan)有限公司