本文選題：水泥混凝土路面　切入點(diǎn)：路面病害　出處：《長沙理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：滬昆高速公路湘潭至邵陽段舊水泥混凝土路面破損嚴(yán)重,行車舒適性差,交通事故繁多,2013年,湘潭高速公路日均流量已超過30000pcu/d,交通量最大的路段—湘潭至塔嶺段流量已超過50000pcu/d,基本達(dá)到飽和,其次,潭邵高速公路大貨車比例高,重車超載現(xiàn)象嚴(yán)重,特別是湘潭段,近年來不斷維修,原有路面結(jié)構(gòu)受到嚴(yán)重的破壞,養(yǎng)護(hù)成本不斷增加,亟待進(jìn)行大修。根據(jù)《公路水泥混凝土路面養(yǎng)護(hù)技術(shù)規(guī)范》(JTJ 073.1-2001)、《公路技術(shù)狀況評定標(biāo)準(zhǔn)》(JTG H20-2007),調(diào)查現(xiàn)有路面破損狀況,統(tǒng)計本路段的主要病害及病害產(chǎn)生原因,并計算出路面使用性能評價指標(biāo),了解舊水泥路面使用性能狀況,為改造方案前期工作提供理論依據(jù),減少大修方案的盲目性,確定路面大修的必要性;結(jié)合當(dāng)前道路狀況和經(jīng)驗(yàn),對潭邵高速公路近幾年路面狀況統(tǒng)計數(shù)據(jù)用指數(shù)型回歸方程模型對其進(jìn)行分析預(yù)測,確定路面大修的最佳時機(jī)。對本路段進(jìn)行了軸載及交通量調(diào)查,統(tǒng)計出年平均日交通量及年平均增長率,從而計算出累計當(dāng)量作用次數(shù),判斷本路段屬于特重交通;再根據(jù)本路段舊路面原有路面結(jié)構(gòu)、損壞狀況,選擇合理的舊路面處治方案,最后根據(jù)我國現(xiàn)行技術(shù)規(guī)范標(biāo)準(zhǔn),結(jié)合國內(nèi)外路面加鋪改造設(shè)計經(jīng)驗(yàn),提出了五種大修方案,并對方案進(jìn)行了結(jié)構(gòu)應(yīng)力分析及承載能力分析,計算結(jié)果表明提出的五種大修方案理論上均能滿足路面的使用性能,考慮了改造方案施工及交通組織難易程度,環(huán)境影響,預(yù)期效果,經(jīng)濟(jì)及適用性能等因素,確定了湘潭到邵陽高速公路水泥路面的改造方案。改造方案通過論證和分析得出:湘潭段舊水泥路面路段推薦采用路面改造方案1,2.5cmAC-10隔離層+18cm連續(xù)配筋混凝土(CRC)+1cm改性瀝青防水防裂粘結(jié)層+6cm改性瀝青AC-20C+4cm改性瀝青SMA-13;邵陽段舊水泥路面加鋪方案推薦K1247+120-K1250+000左幅采用路面改造方案4,1cm乳化瀝青碎石封層+10cm摻纖維的粗粒式瀝青混凝土(AC-25C)+6cm改性瀝青AC-20C+4cm改性瀝青SMA-13;其余路段采用路面改造方案3,1cm改性瀝青防水防裂粘結(jié)層+10cm瀝青穩(wěn)定碎石+6cm改性瀝青AC-20C+4cm改性瀝青SMA-13。改造方案可為潭邵高速公路及類似水泥路面大修工程提供參考依據(jù)。
[Abstract]:The old cement concrete pavement of the Xiangtan to Shaoyang section of the Shanghai-Kunming Expressway is seriously damaged, the driving comfort is poor, and there are many traffic accidents. In 2013, The average daily flow of Xiangtan Expressway has exceeded 300pcu-d, and the volume of traffic from Xiangtan to Taling has exceeded 500pcu-d, which is basically saturated. Secondly, the proportion of heavy trucks in Tan-Shao Expressway is high, and the phenomenon of heavy overloading is serious, especially in Xiangtan Section. In recent years, with the continuous maintenance, the original pavement structure has been seriously damaged, and the maintenance cost has been increasing. According to the Technical Code for maintenance of Highway cement concrete pavement, JTJ073.1-2001and JTG H20-2007, this paper investigates the existing pavement damage, and counts the main diseases and the causes of the diseases in this section. The evaluation index of pavement performance is calculated, the performance of old cement pavement is understood, the theoretical basis is provided for the preliminary work of the reconstruction scheme, the blindness of overhaul scheme is reduced, and the necessity of pavement overhaul is determined. Combined with the current road condition and experience, this paper analyzes and predicts the statistical data of the road surface condition of Tan-Shao Expressway in recent years by using the exponential regression equation model to determine the best time for road surface overhaul. The axle load and traffic volume of this section are investigated. Statistics the annual average daily traffic volume and the annual average growth rate, so as to calculate the accumulative equivalent action times, judge that the road section belongs to heavy traffic, and then according to the original pavement structure of the old pavement of this section, damage condition, According to the current technical standard of our country and the experience of pavement overlay design at home and abroad, five kinds of overhauling schemes are put forward, and the structural stress analysis and carrying capacity analysis are carried out. The calculation results show that the five overhauling schemes can meet the pavement performance in theory, and take into account the construction and traffic organization difficulty, the environmental impact, the expected effect, the economic and applicable performance and so on. The reconstruction scheme of cement pavement of Xiangtan to Shaoyang expressway is determined. Through demonstration and analysis, it is concluded that the road surface reconstruction scheme of the old cement pavement section of Xiangtan section is recommended to be 1 / 2. 5 cm AC-10 continuous reinforced concrete with 18 cm continuous reinforcement. 1cm modified asphalt waterproof crack proof adhesive layer 6cm modified asphalt AC-20C 4cm modified asphalt SMA-13.The overlay scheme of old cement pavement in Shaoyang section recommended that K1247 120-K1250000 left side adopt the road modification scheme 41cm emulsified asphalt macadam sealing layer 10cm mixed with fiber coarse grained type. Asphalt concrete (AC-25C) 6cm modified bitumen AC-20C 4cm modified asphalt SMA-13.The other sections of road adopt pavement modification scheme 310cm modified bitumen waterproof crack proof adhesive layer 10cm bituminous stabilized macadam 6cm modified bitumen AC-20C 4cm modified asphalt SMA-13.The modification scheme can be Tan Tan. Shao Expressway and similar cement pavement overhaul project to provide reference basis.
【學(xué)位授予單位】：長沙理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U416.216;U418.6

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