本文選題：高速公路 + 瀝青路面深層病害�。� 參考：《武漢工程大學(xué)》2015年碩士論文

【摘要】：隨著我國高速公路建設(shè)里程逐年增多,公路養(yǎng)護(hù)、重建工作將成為公路建設(shè)行業(yè)的重要任務(wù)之一。對路面采取預(yù)防性養(yǎng)護(hù)措施,能對路面潛在病害的發(fā)展起到預(yù)防抑制作用,同時提高路面技術(shù)狀況,延長路面使用壽命。近年來,高聚物化學(xué)注漿技術(shù)運用于公路養(yǎng)護(hù)維修工程中,用于治理路面深層次病害,如路面基層沉陷、基層裂縫、層間脫空、唧漿等,優(yōu)勢突出,效果良好。但對高聚物注漿技術(shù)的注漿機理研究相對滯后,工程設(shè)計與施工長期依賴于經(jīng)驗總結(jié),限制了這一優(yōu)良技術(shù)的廣泛運用。本文參照國內(nèi)外有關(guān)高聚物注漿技術(shù)及其應(yīng)用實例,結(jié)合廣惠高速公路高聚物注漿路段試驗,對高聚物注漿材料在瀝青路面內(nèi)部擴(kuò)散機理以及施工工藝方面進(jìn)行研究。在對多雨地區(qū)瀝青路面典型病害歸納總結(jié)的基礎(chǔ)上,將瀝青路面病害類型分為路表病害及深層病害,深層病害主要體現(xiàn)在基層損壞方面;結(jié)合高聚物注漿原理及特點,分析了高聚物注漿治理瀝青路面深層病害的合適時機;結(jié)合高聚物注漿材料的流動性及劈裂注漿理論,探討了高聚物材料在瀝青路面結(jié)構(gòu)層內(nèi)的擴(kuò)散方式以及擴(kuò)散機理;借以點源式擴(kuò)散模型理論分析注漿壓力與注漿擴(kuò)散半徑、注漿量之間的相關(guān)性。分析主要結(jié)果如下:(1)硬質(zhì)高聚物注漿材料的流動性與反應(yīng)溫度、時間極其相關(guān),混合體的粘度隨溫度升高而上升,內(nèi)在原因是,溫度的升高促進(jìn)了反應(yīng)的進(jìn)行,漿體凝固時間越快,粘度上升越快;在同一溫度下,漿體粘度隨著時間的延長而增大,即粘度與溫度、時間均成正比關(guān)系;(2)高聚物注漿在路面結(jié)構(gòu)內(nèi)部主要以填充擠密層間定向劈裂鼓泡壓密不定向劈裂三種方式擴(kuò)散,隨著擴(kuò)散半徑的增大,注漿壓力以及裂隙厚度隨之減小。以高聚物雙組份黑白料1:1的質(zhì)量比、自由體積膨脹比1:15~1:20、自由膨脹密度變化范圍50~100kg/m3、凝膠時間15秒以及固化時間約1min作為原材料技術(shù)指標(biāo)制得高聚物注漿材料,按照10、12、13、14、15的發(fā)泡倍率制作容積為309cm3的圓柱形高聚物泡沫試件進(jìn)行室內(nèi)試驗,包括吸水率試驗、無側(cè)限抗壓強度試驗、浸水無側(cè)限抗壓強度試驗和水質(zhì)pH影響,獲得高聚物注漿材料密度與吸水率及抗壓強度之間的相關(guān)性:吸水率隨著試件密度的增加呈下降趨勢;當(dāng)膨脹倍率在11~15倍時,聚氨酯高聚物密度對材料的抗壓強度影響不大;聚氨酯高聚物材料抗壓強度受水影響較小,聚氨酯高聚物注入路面基層后對地下水的pH值無影響。因此,初步判斷按該技術(shù)指標(biāo)獲得的高聚物材料可應(yīng)用于公路維修中。2013年10月,課題組調(diào)查并分析了廣東省廣惠高速公路注漿前的路面技術(shù)狀況及沿線自然條件,對注漿方案進(jìn)行合理設(shè)計,并選定注漿路段;通過開槽試注漿觀察高聚物漿液在路面結(jié)構(gòu)內(nèi)部的流動方式,驗證理論分析中高聚物注漿的擴(kuò)散機理;借鑒《高分子聚合物注漿處治高速公路病害施工工法》,結(jié)合廣惠高速公路瀝青路面基底高聚物注漿試驗路段情況,對注漿孔布置及注漿壓力控制方法進(jìn)行補充完善,依據(jù)注漿前后落錘式彎沉儀(FWD)無損檢測結(jié)果,提出新的高聚物注漿彎沉控制標(biāo)準(zhǔn),并理論分析了注漿后瀝青路面的使用壽命。依據(jù)試注漿結(jié)果,分別對注漿孔縱向間距注漿壓力控制方法進(jìn)行補充完善:(1)本次漿液擴(kuò)散半徑的變化范圍為1~4m,為保證注漿實施效果,并綜合考慮工程量及經(jīng)濟(jì)效益,將滿布時的注漿孔縱向間距設(shè)置和沿縫注漿孔布置方法作出以下變動:①表面無明顯病害,彎沉值較小,縱向距離布置為1.2~1.5m;②表面無明顯病害,彎沉值較大,縱向距離布置為1.5~2m;③沿縫注漿孔間距設(shè)置為1.5m;(2)若注漿時注漿壓力突然增高,注漿壓力反力回彈,應(yīng)立即停止注漿,穩(wěn)壓注漿槍15~30s左右即可,若注漿壓力突然減小,那么意味著遇到了空洞或漿液開始劈裂流動,或是膨脹的漿液已開始將路面隆起,此時應(yīng)對注漿孔周圍半徑1m范圍內(nèi)路面高程進(jìn)行時刻關(guān)注。為防止過多的注漿量導(dǎo)致路面隆起,在注漿壓力下降后繼續(xù)注漿的時間應(yīng)控制在1~2min。試驗路段注漿前后彎沉值及土基模量值都有所增大,注漿后路面使用壽命理論上提高了27%。
[Abstract]:As the mileage of highway construction in China is increasing year by year, highway maintenance and reconstruction will become one of the important tasks of highway construction industry. Taking preventive maintenance measures to pavement can prevent and suppress the development of potential pavement diseases, improve pavement technology and prolong the service life of pavement. In recent years, polymer chemistry Grouting technology is used in highway maintenance and maintenance engineering, which is used to control deep subsurface disease, such as pavement subsurface subsidence, base crack, interlayer empty, slurry and so on. The advantage is outstanding and the effect is good. But the research on grouting mechanism of polymer grouting technology is relatively lagging behind, the project design and construction depend on the experience summary for a long time, limiting this fine. Based on the high polymer grouting technology at home and abroad and its application examples, this paper studies the diffusion mechanism and construction technology of polymer grouting material on the asphalt pavement, combining with the experiment of the high polymer grouting section of Guanghui expressway, and the basis of the summary of the typical diseases of the asphalt pavement in the rainy area. The type of asphalt pavement disease is divided into road surface disease and deep disease, and the deep disease is mainly reflected in the damage of base course. Combined with the principle and characteristics of polymer grouting, the appropriate time to treat the deep asphalt pavement disease by polymer grouting is analyzed, and the polymer grouting material's fluidity and splitting grouting theory are combined to discuss the polymer. The diffusion mechanism and diffusion mechanism of the material in the asphalt pavement structure layer are analyzed by the point source diffusion model theory. The correlation between grouting pressure and grouting diffusion radius and grouting amount is analyzed. The main results are as follows: (1) the fluidity of the hard polymer grouting material is closely related to the reaction temperature and time, and the viscosity of the mixture is with the temperature. The inner reason is that the increase of temperature promotes the reaction, the faster the solidifying time of the slurry, the faster the viscosity rises, the viscosity of the slurry increases with the time, that is, the viscosity is proportional to the temperature and time, and (2) the Gao Ju grouting is mainly packed in the pavement structure with the directional splitting between the layers. With the increase of the diffusion radius, the grouting pressure and the thickness of the crack decrease with the increase of the diffusion radius, with the mass ratio of 1:1, the free volume expansion ratio 1:15~1:20, the free expansion density range 50~100kg/m3, the gelation time of 15 seconds and the curing time about 1min as raw material, with the increase of the diffusion radius. The polymer grouting material was made by technical index. A cylindrical polymer foam specimen with a volume of 309cm3 was made according to the foaming ratio of 10,12,13,14,15 to carry out the laboratory test, including the water absorption test, the unconfined compression strength test, the unconfined compression strength test and the water quality pH, and the density and water absorption of the polymer grouting material were obtained. The correlation between the compressive strength: the water absorption rate decreases with the increase of the specimen density; when the expansion ratio is 11~15 times, the polyurethane polymer density has little effect on the compressive strength of the material; the compressive strength of the polyurethane polymer material is less affected by the water, and the polyurethane polymer has no effect on the pH value of the ground water after the polyurethane polymer is injected into the pavement base. Therefore, the preliminary judgment of the polymer material obtained by this technical index can be applied to highway maintenance in October.2013. The project group investigated and analyzed the technical conditions and natural conditions of the pavement before grouting in Guanghui Expressway in Guangdong Province, designed the grouting scheme reasonably, and selected the grouting section, and observed the high cohesion through the slotting test grouting. The flow mode of the slurry in the pavement structure verifies the diffusion mechanism of the polymer grouting in the theoretical analysis, and the grouting hole layout and grouting pressure control method is supplementing with reference to the construction method of "high polymer grouting treatment for Expressway disease" and the condition of the asphalt pavement base polymer grouting test section of Guanghui expressway. It is perfect, according to the nondestructive testing result of the drop hammer type deflection instrument (FWD) before and after grouting, the new control standard of polymer grouting deflection is put forward, and the service life of the asphalt pavement after grouting is analyzed theoretically. According to the results of the grouting, the grouting pressure control method of the longitudinal spacing of the grouting hole is supplemented and perfected respectively: (1) the change of the diffusion radius of the slurry. The range is 1~4m. In order to ensure the effect of grouting, and considering the engineering quantity and economic benefit, the following changes are made in the setting of the longitudinal spacing of the grouting hole and the layout method of grouting hole along the seam. (1) there is no obvious disease on the surface, the deflection value is small, the longitudinal distance is arranged as 1.2~ 1.5m; there is no obvious disease on the surface, the deflection value is larger and the longitudinal distance is long. The spacing is arranged as 1.5~2m; (2) the spacing of grouting holes in the seam is set to 1.5m; (2) if the grouting pressure increases suddenly and the grouting pressure is back to rebound, the grouting pressure should be stopped immediately and the grouting gun is stabilized around 15~30s. If the grouting pressure suddenly decreases, it means that the hole or slurry begins to split flow, or the swelling slurry has begun to start. In order to prevent excessive grouting to lead to road uplift, the time of continuing grouting after the grouting pressure drops should be controlled to increase the value of the deflection and the modulus of soil foundation before and after grouting in the 1~2min. test section, and the theory of the life span of the pavement after the grouting is applied to the pavement. Up 27%.
【學(xué)位授予單位】：武漢工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U418.6

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 林有貴,林家勝,羅竟;超載汽車對瀝青路面的影響[J];廣西交通科技;2000年04期

2 林有貴,羅競;廣西瀝青路面典型結(jié)構(gòu)的研究[J];廣西交通科技;2000年S1期

3 王進(jìn)滿,黃廣忻,李智榮,鄧衛(wèi)明;瀝青路面早期推移防治的探討[J];山西交通科技;2000年02期

4 王東偉,李永勝,阮川民,靳長征;瀝青路面的加熱修補[J];山西交通科技;2000年02期

5 余東坡,王魯軍;瀝青路面低溫開裂問題的探討[J];公路交通技術(shù);2004年02期

6 劉春波,董秀梅;瀝青路面的裂縫預(yù)防及措施[J];黑龍江交通科技;2004年02期

7 姜海波,楊文婷,洪沛;瀝青路面的水損害分析[J];森林工程;2004年03期

8 劉桂強;瀝青路面的早期破壞及其防治措施[J];城市道橋與防洪;2004年03期

9 趙保平;瀝青路面早期破壞原因及預(yù)防措施探討[J];山西交通科技;2004年02期

10 陳造奇;一種由美國引進(jìn)的瀝青路面保護(hù)劑悄然進(jìn)入我國高速公路[J];上海公路;2004年02期

相關(guān)會議論文 前10條

1 姬東;李黎;;瀝青路面水破壞原因分析與設(shè)計探討[A];第四屆河南省汽車工程科技學(xué)術(shù)研討會論文集[C];2007年

2 李承斌;穆杰;邵龍?zhí)?;微波加熱瀝青路面及其控制的研究[A];“第十四屆全國微波能應(yīng)用學(xué)術(shù)會議”暨“2009年微波創(chuàng)造美的生活高峰論壇”論文集[C];2009年

3 張澤文;;高速公路瀝青路面關(guān)鍵施工質(zhì)量管理實踐[A];湖北省公路學(xué)會二○○九年學(xué)術(shù)年會論文集[C];2010年

4 錢國超;;江蘇高速公路瀝青路面“十五”技術(shù)回顧與展望[A];江蘇省公路學(xué)會優(yōu)秀論文集（2006-2008）[C];2009年

5 萬里鵬;程琳;;淺談瀝青路面水破壞的原因及防治措施[A];土木建筑學(xué)術(shù)文庫（第10卷）[C];2008年

6 許志鴻;董占文;吳文海;;瀝青路面結(jié)構(gòu)的可靠性分析[A];中國土木工程學(xué)會第七屆年會暨茅以升誕辰100周年紀(jì)念會論文集[C];1995年

7 陳景;沈金安;李福普;;瀝青路面滲水測定方法的研究[A];中國公路學(xué)會2002年學(xué)術(shù)交流論文集[C];2002年

8 張曉冰;黃曉明;;瀝青路面溫度狀況分析[A];第一屆全國公路科技創(chuàng)新高層論壇論文集公路設(shè)計與施工卷[C];2002年

9 賀俊;;瀝青路面的施工與監(jiān)理的質(zhì)量控制[A];瀝青路面施工監(jiān)理交流材料匯編[C];2002年

10 鎮(zhèn)亦明;戴建軍;胡愛梅;;高速公路瀝青路面施工中幾個技術(shù)問題的探討[A];瀝青路面施工監(jiān)理交流材料匯編[C];2002年

相關(guān)重要報紙文章 前10條

1 記者　 王珍珍;美專家提出系統(tǒng)考慮瀝青路面質(zhì)量[N];中國交通報;2006年

2 趙會;岷江大道瀝青路面全面開鋪[N];眉山日報;2008年

3 駐張家港首席記者 王樂飛　通訊員 蔣恒;港城“嘗鮮”瀝青路面修復(fù)新技術(shù)[N];蘇州日報;2011年

4 實習(xí)生 李茜邋楊捷;彩色瀝青路面制作“獨占鰲頭”[N];長江日報;2007年

5 記者袁嵐;瀝青路面壽命可達(dá)50年[N];中國建材報;2010年

6 朱振宇;江蘇交通科學(xué)研究院集成研究打造抗水損瀝青路面[N];中國交通報;2011年

7 楚天高速公路養(yǎng)護(hù)中心 王云波;瀝青路面頂成“麻麻臉” “千斤頂”配塊枕木如何[N];湖北日報;2005年

8 張春躍;我市一項瀝青路面修復(fù)技術(shù)達(dá)到國際水平[N];保定日報;2012年

9 本報記者 陳淑華 通訊員 郭曉萍;探索瀝青路面“長壽”之道[N];泉州晚報;2012年

10 記者 陳云芬;瀝青路面關(guān)鍵技術(shù)破題[N];云南日報;2009年

相關(guān)碩士學(xué)位論文 前10條

1 劉繼忠;云南省高海拔地區(qū)瀝青路面溫度場及溫度應(yīng)力數(shù)值計算分析[D];重慶交通大學(xué);2009年

2 胡勇;瀝青路面質(zhì)量動態(tài)控制系統(tǒng)[D];長安大學(xué);2009年

3 程亮;基于線彈性斷裂力學(xué)的瀝青路面結(jié)構(gòu)分析[D];長安大學(xué);2009年

4 張文;瀝青路面極限承載力與使用壽命預(yù)估研究[D];湖南大學(xué);2009年

5 李雪蓮;瀝青路面關(guān)鍵質(zhì)量指標(biāo)與付費系數(shù)研究[D];湖南大學(xué);2009年

6 鄧融;水和荷載耦合作用下瀝青路面動力響應(yīng)研究[D];大連海事大學(xué);2010年

7 孫兆剛;干旱寒冷地區(qū)瀝青路面溫度應(yīng)力研究[D];長安大學(xué);2010年

8 史恒志;邯鄲地區(qū)運煤道路超重型交通瀝青路面結(jié)構(gòu)研究[D];河北工業(yè)大學(xué);2000年

9 婁峰;基于模糊理論的瀝青路面可靠性分析[D];湖南大學(xué);2005年

10 偶昌寶;瀝青路面結(jié)構(gòu)動力響應(yīng)分析[D];浙江大學(xué);2005年

，

本文編號：1944829