【摘要】：服役年限末或超期服役的水泥路面面臨著拆除重建或改造的難題，水泥路面拆除困難，挖除板的廢棄造成資源浪費且占用土地，因此，可以對舊水泥路面破碎加鋪補強層或者采用碎石化技術(shù)。碎石化技術(shù)能徹底消除加鋪層的反射裂縫，但為美國技術(shù)，沒有設(shè)備和技術(shù)轉(zhuǎn)讓，只有工程承包，造價很高。目前，對于舊水泥路面的改造工程，，采用最多的為在處理過的舊水泥板上加鋪補強層。 論文以小浪底專用公路改造工程的路面工程為依托，系統(tǒng)的給出了一套舊水泥路面改造的設(shè)計理論，整個設(shè)計過程注重資源的再生利用，秉承經(jīng)濟、環(huán)保理念。通過對原水泥路面結(jié)構(gòu)、破損病害、承載能力等調(diào)查結(jié)果的分析，以路面狀況指數(shù)PCI和斷板率DBL評價舊水泥路面的技術(shù)狀況，結(jié)合交通情況，確定舊水泥路面的改造方案；分析了對舊水泥路面的改造方法：直接加鋪、打裂壓穩(wěn)、破碎處理及碎石化，并結(jié)合小浪底專用公路的實際情況，確定了采用多錘頭破碎機破碎水泥板作為下臥層的改造措施。 論文分析了基層和面層混合料的材料特性，針對實體工程，提出了增設(shè)調(diào)平層、采用水泥粉煤灰穩(wěn)定碎石的方法以減少反射裂縫�；鶎硬捎盟喾勖夯一旌狭�，針對我國規(guī)范中關(guān)于水泥粉煤灰穩(wěn)定碎石混合料設(shè)計的空白，參考水泥穩(wěn)定碎石及石灰穩(wěn)定碎石混合料的設(shè)計方法，借鑒前人研究成果，并通過試驗研究驗證采用“10%粉煤灰摻量”。面層采用橡膠瀝青混合料，環(huán)保且能提高瀝青路面抗變形能力，減小行車噪音；將破碎板頂面當(dāng)量回彈模量代替新建路面結(jié)構(gòu)計算中的土基模量，按照新建路面進行結(jié)構(gòu)層厚度計算；提出了舊水泥路面破碎處理的施工工藝及要點，破碎水泥板施工工藝流程以及相關(guān)的準(zhǔn)備工作及控制要求等，為舊水泥路面的破碎處理提供了重要的理論依據(jù)和技術(shù)支撐。
[Abstract]:The cement pavement which has served at the end of its service life or exceeds the service period is faced with the problem of demolition, reconstruction or reconstruction, and the demolition of the cement pavement is difficult. The waste of resources and the occupation of land are caused by the abandonment of the excavated board. Therefore, The old cement pavement can be broken and reinforced or the broken petrochemical technology can be used. Crushing and petrochemical technology can completely eliminate the reflection cracks in the overlay, but for American technology, there is no equipment and technology transfer, only engineering contracting, the cost is very high. At present, for the reconstruction project of the old cement pavement, the most used is to lay the reinforced layer on the treated old cement board. Based on the pavement engineering of Xiaolangdi special highway reconstruction project, this paper systematically gives a set of design theory of old cement pavement reconstruction. The whole design process pays attention to the recycling of resources, adhering to the concept of economy and environmental protection. Based on the analysis of the investigation results of the original cement pavement structure, damage diseases and bearing capacity, the technical condition of the old cement pavement is evaluated by the pavement condition index PCI and the broken board rate DBL, and the reconstruction scheme of the old cement pavement is determined according to the traffic situation. This paper analyzes the reconstruction methods of the old cement pavement, such as direct paving, fracturing and fracturing stability, crushing treatment and fragmentation, and combined with the actual situation of Xiaolangdi special highway, determines the reconstruction measures of using the broken cement board of multi-hammer crusher as the underlying layer. In this paper, the material characteristics of base and surface mixture are analyzed, and aiming at the solid engineering, the method of adding leveling layer and stabilizing macadam with cement fly ash is put forward to reduce the reflection crack. Cement fly ash mixture is used in the base course. In view of the blank of cement fly ash stabilized macadam mixture design in the code of our country, referring to the design method of cement stabilized macadam and lime stabilized macadam mixture, and drawing lessons from the previous research results, Through the experimental study, it is verified that the content of 10% fly ash is adopted. The rubber asphalt mixture is used in the surface layer, which can improve the deformation resistance of asphalt pavement and reduce the traffic noise. The equivalent springback modulus of the top surface of the broken plate is replaced by the modulus of the soil foundation in the calculation of the new pavement structure, and the thickness of the structural layer is calculated according to the new pavement. The construction technology and key points of broken treatment of old cement pavement, the construction process of broken cement board and the related preparation and control requirements are put forward, which provides an important theoretical basis and technical support for the crushing treatment of old cement pavement.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U418.8;U416.2

【參考文獻】

相關(guān)期刊論文 前9條

1 張亮,金宴,黃曉明,金志強,蔣磊;水泥混凝土路面結(jié)構(gòu)狀況評價[J];城市道橋與防洪;1998年01期

2 沈衛(wèi)國,周明凱,吳少鵬,趙青林,喻世濤;水泥粉煤灰穩(wěn)定粒料基層的研究[J];粉煤灰綜合利用;2003年02期

3 柳正華;談至明;;舊水泥混凝土路面的碎石化技術(shù)綜述[J];公路;2005年12期

4 徐鷗明;韓森;孫薇;;水泥粉煤灰穩(wěn)定碎石強度增長特性[J];廣西大學(xué)學(xué)報(自然科學(xué)版);2009年04期

5 孫振平;水泥混凝土路面在我國的地位及其發(fā)展措施[J];混凝土;1995年04期

6 劉炳;淺談公路施工環(huán)境保護及環(huán)境影響評價[J];交通科技;2005年01期

7 薛曉娟;;專用公路交通量預(yù)測方法的研究[J];交通科技;2012年05期

8 姜鐵;常穎;國玉春;王彬;李明元;;粉煤灰對水泥穩(wěn)定碎石材料力學(xué)性能的影響[J];武漢理工大學(xué)學(xué)報;2007年09期

9 張嘎吱;沙愛民;;水泥粉煤灰穩(wěn)定碎石結(jié)合料與集料的比例[J];長安大學(xué)學(xué)報(自然科學(xué)版);2005年06期

本文編號：2486476