本文關(guān)鍵詞： 山嶺地區(qū) 隧道結(jié)構(gòu) 病害 變形機理 處治　出處：《重慶交通大學》2015年碩士論文　論文類型：學位論文

【摘要】：我國是一個多山區(qū)的國家,尤其是重慶,四川,貴州,云南等西南地區(qū),山嶺的特點表現(xiàn)為數(shù)量多,山脈長而大。近年來,基礎(chǔ)建設(shè)的迅速發(fā)展,尤其是高數(shù)公路和高速鐵路,為交通基礎(chǔ)建設(shè)的助力和支撐。高速公路的隧道通常作為整個項目工程的重要組成部分,通常對整個高速公路項目的建設(shè)期主控作用。另一方面,隧道的數(shù)量逐漸增多,長度和跨度不斷增加,結(jié)構(gòu)形式也呈現(xiàn)出多樣化,隧道也取得了相對不錯的發(fā)展和進步,整條線路所占的比例在逐漸增大,長度和跨度也在增加。隧道結(jié)構(gòu)作為地下空間結(jié)構(gòu)中的一種,由于施工質(zhì)量不佳、工程地質(zhì)條件惡劣、工程材料的選用不合理等影響,隧道結(jié)構(gòu)病害在國內(nèi)外仍是一個難題,這些結(jié)構(gòu)的病害主要表現(xiàn)為:隧道襯砌結(jié)構(gòu)開裂、隧道滲漏水、隧道坍方、襯砌結(jié)構(gòu)背后空洞和不密實。根據(jù)相關(guān)的資料,將近30%的山區(qū)高速公路隧道存在不同程度的隧道結(jié)構(gòu)病害,其中隧道襯砌結(jié)構(gòu)病害,襯砌滲漏水和襯砌結(jié)構(gòu)的開裂是最要的隧道結(jié)構(gòu)變形破壞的方面。隧道結(jié)構(gòu)一旦出現(xiàn)病害,將會對整條高速公路的營運安全產(chǎn)生影響,不盡會嚴重的威脅隧道內(nèi)部的行車安全,縮短隧道的整個使用壽命周期和縮減高速公路的全壽命周期。隧道結(jié)構(gòu)病害出現(xiàn)后若沒得到及時較好的治理,襯砌結(jié)構(gòu)的病害會進一步擴展,使二襯結(jié)構(gòu)襯砌損傷,導致隧道內(nèi)的最終塌方最終破壞。再者,隧道結(jié)構(gòu)的局部病害有可能會直接直接影響整條隧道的安全使用,甚至致使整個隧道破壞,極大的造成經(jīng)濟成本和維修成本損失,社會影響和安全可靠的不利結(jié)果。因此,針對運營期的隧道,分析結(jié)構(gòu)變形的機理和常見病害的成因,并在此基礎(chǔ)上對隧道結(jié)構(gòu)病害的檢測技術(shù)和處治方法進行研究有十分重要的理論價值和實際意義。本文在研究國內(nèi)外有關(guān)隧道結(jié)構(gòu)病害產(chǎn)生的機理和處治方法技術(shù)研究成果的基礎(chǔ)上,以重慶地區(qū)運營期山嶺隧道的結(jié)構(gòu)特征為切入點,根據(jù)具體的隧道工程實例來分析山嶺地區(qū)的高速隧道結(jié)構(gòu)的病害,研究隧道結(jié)構(gòu)的變形機理,分別從外部荷載、環(huán)境等外部因素和設(shè)計、施工、材料等內(nèi)部因素兩個較大方面進行研究,對隧道結(jié)構(gòu)病害的成因進行研究分析,總結(jié)出隧道結(jié)構(gòu)病害可以或者可能的分類情況,以此研究透徹隧道結(jié)構(gòu)的變形機理和變形影響因素,提出與之對應的隧道結(jié)構(gòu)病害處治方法及施工技術(shù)措施。經(jīng)過分析對比當前隧道結(jié)構(gòu)病害的檢測方法,歸納總結(jié)出適合我國西南地區(qū)運行期公路隧道的重要病害檢測方法,在此基礎(chǔ)上研究相應的治理方案。最后,以重慶某隧道為例,針對性提出符合該地區(qū)實際情況的各類病害的預防措施和處治措施,被證明隧道結(jié)構(gòu)病害處治效果合理可靠。
[Abstract]:China is a mountainous country, especially in the southwest areas of Chongqing, Sichuan, Guizhou, Yunnan and so on. The mountains are characterized by a large number of mountains, long and large mountains. In recent years, the rapid development of basic construction, especially the high number of highways and high-speed railways, As an important part of the whole project project, the highway tunnel usually controls the whole expressway project construction period. On the other hand, the number of tunnels increases gradually. The length and span of the tunnel are increasing, the structure forms are diversified, the tunnel has made relatively good development and progress, and the proportion of the whole line is gradually increasing. The length and span are also increasing. As a kind of underground space structure, tunnel structure disease is still a difficult problem at home and abroad due to the influence of poor construction quality, poor engineering geological conditions and unreasonable selection of engineering materials. The main diseases of these structures are: cracking of tunnel lining, leakage of water, collapse of tunnel, cavity and uncompactness behind the lining. Nearly 30% of mountain highway tunnels have different degree of tunnel structural diseases, among which tunnel lining structural diseases, lining leakage and lining structure cracking are the most important aspects of tunnel structure deformation and destruction. It will have an impact on the operation safety of the whole highway, and it will not seriously threaten the traffic safety inside the tunnel. Shortening the whole life cycle of the tunnel and shortening the life cycle of the expressway. If the disease of the tunnel structure does not get better treatment in time, the disease of the lining structure will be further expanded and the lining of the second liner structure will be damaged. Furthermore, the local disease of tunnel structure may directly affect the safe use of the whole tunnel, and even cause the entire tunnel damage, resulting in great loss of economic cost and maintenance cost. Social impact and safe and reliable adverse results. Therefore, the mechanism of structural deformation and the causes of common diseases are analyzed for tunnels in operation period. On this basis, it is of great theoretical value and practical significance to study the detection technology and treatment methods of tunnel structural diseases. This paper studies the mechanism of tunnel structural diseases at home and abroad and the methods to deal with them. On the basis of the achievements of the art research, Based on the structural characteristics of the mountain tunnel in Chongqing area, this paper analyzes the disease of the high-speed tunnel structure in the mountain area according to the concrete tunnel engineering example, studies the deformation mechanism of the tunnel structure, and studies the deformation mechanism of the tunnel structure from the external load, respectively. External factors such as environment, design, construction, material and other internal factors are studied in this paper. The causes of tunnel structural diseases are studied and analyzed, and the classification of tunnel structural diseases can or may be concluded. Based on the thorough study of deformation mechanism and deformation influencing factors of tunnel structure, the corresponding treatment methods and construction technical measures of tunnel structural diseases are put forward, and the current detection methods of tunnel structural diseases are analyzed and compared. This paper sums up the important disease detection methods of highway tunnel suitable for the running period of southwest China, and studies the corresponding treatment scheme on this basis. Finally, taking a tunnel in Chongqing as an example, The preventive measures and treatment measures of various kinds of diseases in accordance with the actual situation in this area are put forward. It is proved that the treatment effect of tunnel structural diseases is reasonable and reliable.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U457.2

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本文編號：1518672