發(fā)布時(shí)間：2018-01-14 15:23

  本文關(guān)鍵詞：毛坪隧道襯砌缺陷致害機(jī)理與加固措施研究　出處：《重慶交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 公路隧道 襯砌結(jié)構(gòu) 致害機(jī)理 安全系數(shù) 加固措施

【摘要】：近年來，隨著公路隧道建設(shè)的規(guī)模大幅度增加，相當(dāng)比例的運(yùn)營隧道存在不同程度的襯砌缺陷和病害問題，嚴(yán)重影響了襯砌結(jié)構(gòu)的安全可靠性。運(yùn)用科學(xué)的方法分析襯砌結(jié)構(gòu)缺陷致害機(jī)理及病害整治措施研究顯得尤為重要。本文依托毛坪隧道，綜合運(yùn)用理論分析、數(shù)值模擬、現(xiàn)場檢測、搜集加固資料及加固后監(jiān)測等多種技術(shù)研究手段，對隧道襯砌結(jié)構(gòu)質(zhì)量缺陷和病害的一般規(guī)律對襯砌結(jié)構(gòu)安全系數(shù)的影響規(guī)律及隧道加固整治措施進(jìn)行了深入研究，主要工作及研究成果總結(jié)如下： ①基于荷載-結(jié)構(gòu)法建立了運(yùn)營隧道襯砌厚度不足、背后空洞等缺陷模型，運(yùn)用數(shù)值模擬，分析了襯砌厚度及背后空洞缺陷位置、程度和復(fù)合缺陷出現(xiàn)時(shí)，襯砌結(jié)構(gòu)內(nèi)力的變化情況，并依據(jù)公路隧道設(shè)計(jì)規(guī)范計(jì)算襯砌結(jié)構(gòu)安全系數(shù)變化規(guī)律。 ②根據(jù)毛坪隧道現(xiàn)場檢測資料為對象，分別對隧道襯砌結(jié)構(gòu)缺陷和病害進(jìn)行了分類。襯砌結(jié)構(gòu)缺陷通常是由地質(zhì)條件和施工質(zhì)量原因造成的；而襯砌結(jié)構(gòu)變形、裂縫、破損等病害則通常是由地質(zhì)條件、襯砌厚度不足和襯砌背后空洞質(zhì)量缺陷等因素導(dǎo)致的。 ③結(jié)合隧道襯砌結(jié)構(gòu)現(xiàn)場檢測資料，運(yùn)用前述分析方法，對襯砌結(jié)構(gòu)缺陷進(jìn)行了內(nèi)力分析和結(jié)構(gòu)安全性評估，提出了注漿和錨噴結(jié)合加固措施，，并對所用材料技術(shù)指標(biāo)作出具體要求；對襯砌結(jié)構(gòu)病害進(jìn)行了分類并根據(jù)其嚴(yán)重程度進(jìn)行了適用性評估，針對不同病害提出了具體可行的整治措施和施工工藝，該將加固整治措施運(yùn)用到了毛坪隧道維修加固工程中。 ④運(yùn)用荷載-結(jié)構(gòu)法，依據(jù)毛坪隧道加固工程中所用材料物理參數(shù)進(jìn)行了數(shù)值模擬分析，并對隧道加固整治后拱頂下沉、周邊收斂、結(jié)構(gòu)荷載狀況進(jìn)行了長期的監(jiān)控量測，結(jié)果顯示襯砌結(jié)構(gòu)在加固整治后能夠達(dá)到預(yù)期效果，可為類似隧道維修加固提供參考依據(jù)。
[Abstract]:In recent years, with the large increase in the scale of highway tunnel construction, a considerable proportion of operating tunnels have different degrees of lining defects and disease problems. The safety and reliability of lining structure is seriously affected. It is very important to use scientific method to analyze the damage mechanism of lining structure defects and disease treatment measures. Numerical simulation, field detection, data collection and post-reinforcement monitoring and other technical research means. The influence of quality defects and defects of tunnel lining on the safety factor of lining structure and the measures of tunnel reinforcement and treatment are deeply studied. The main work and research results are summarized as follows: 1. Based on the load-structure method, the defect models such as insufficient thickness of lining and cavity behind the tunnel are established. The thickness of lining and the location, degree and appearance of composite defects are analyzed by numerical simulation. According to the design code of highway tunnel, the variation law of safety factor of lining structure is calculated. (2) according to the field inspection data of Maoping tunnel, the defects and diseases of tunnel lining are classified. The defects of lining structure are usually caused by geological conditions and construction quality. However, the defects of lining such as deformation, crack and breakage are usually caused by geological conditions, insufficient lining thickness and quality defects of the cavity behind the lining. 3 combined with the field inspection data of tunnel lining structure, the internal force analysis and structural safety evaluation of lining structure defects are carried out by using the above-mentioned analysis method, and the reinforcement measures of grouting and bolting combined with shotcrete are put forward. And make the concrete request to the technical index of the material used; The lining structural diseases are classified and the applicability is evaluated according to their severity. The concrete and feasible treatment measures and construction techniques are put forward for different diseases. The reinforcement measures are applied to the maintenance and reinforcement of Maoping Tunnel. (4) the load-structure method is used to simulate and analyze the physical parameters of the material used in the reinforcement of Maoping tunnel, and the vault subsidence after reinforcement and renovation, and the circumference converge. The results show that the lining structure can achieve the expected effect after reinforcement and treatment, which can provide reference for similar tunnel maintenance and reinforcement.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U457

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 宋瑞剛;張頂立;伍冬;李鵬飛;;隧道襯砌結(jié)構(gòu)裂損機(jī)理及定量評估[J];北京交通大學(xué)學(xué)報(bào);2010年04期

2 劉彤,謝永利,李寧軍;祈家大山隧道病害治理方案數(shù)值模擬研究[J];公路;2005年08期

3 王萬平;賀志勇;盧曉玲;蘭衍亮;;某公路隧道健康狀態(tài)診斷與維修加固[J];公路;2008年07期

4 韓廈,姜琳瑜,嚴(yán)利娥;隧道襯砌維修加固的新材料、新技術(shù)[J];廣西大學(xué)學(xué)報(bào)(自然科學(xué)版);2005年S1期

5 石宇峰;;隧道圍巖加固及換拱施工技術(shù)[J];科技創(chuàng)新與應(yīng)用;2013年06期

6 朱玉琴;李秀芳;金敏華;;公路隧道定期檢查與安全評估方法技術(shù)探討[J];公路交通科技(應(yīng)用技術(shù)版);2013年04期

7 楊成忠;黃明;劉新榮;王淑芳;;碳纖維布用于深埋隧道襯砌裂縫的加固效果[J];解放軍理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年03期

8 王紅良;張運(yùn)良;安永林;彭立敏;;地質(zhì)雷達(dá)無損檢測在隧道二次襯砌中的應(yīng)用[J];鐵道工程學(xué)報(bào);2008年11期

9 康寅;孫付峰;程都;路世豹;王培;;注漿加固技術(shù)在隧道下穿建筑物過程中的應(yīng)用[J];青島理工大學(xué)學(xué)報(bào);2013年02期

10 丁威;韋慶東;;《纖維混凝土應(yīng)用技術(shù)規(guī)程》JGJ/T221—2010簡介[J];施工技術(shù);2011年07期

相關(guān)博士學(xué)位論文 前1條

1 張素磊;隧道襯砌結(jié)構(gòu)健康診斷及技術(shù)狀況評定研究[D];北京交通大學(xué);2012年

本文編號：1424173