本文選題：高速鐵路 + 隧道��； 參考：《華東交通大學(xué)》2017年碩士論文

【摘要】：新建隧道鄰近既有高鐵隧道進(jìn)行爆破施工時(shí),炸藥爆炸產(chǎn)生的爆破振動(dòng)波可能會(huì)引起既有高鐵隧道襯砌結(jié)構(gòu)和周?chē)鷩鷰r的破壞,對(duì)既有高鐵隧道的安全運(yùn)營(yíng)造成影響。因此,為了保證既有高速鐵路隧道的安全運(yùn)營(yíng),有必要對(duì)此類(lèi)工程進(jìn)行研究。本文結(jié)合福鐵路閩贛段金山頂隧道救援隧道爆破施工工程實(shí)例,主要做了以下工作:首先對(duì)近接平行隧道爆破施工的振動(dòng)理論、爆破振動(dòng)監(jiān)測(cè)及控制技術(shù)進(jìn)行了研究總結(jié),并結(jié)合現(xiàn)場(chǎng)調(diào)研,制定了合理的爆破振動(dòng)監(jiān)測(cè)方案;然后依據(jù)動(dòng)力彈性理論,結(jié)合現(xiàn)場(chǎng)爆破振動(dòng)監(jiān)測(cè)得到的振動(dòng)速度與動(dòng)應(yīng)變數(shù)據(jù),通過(guò)線性擬合得到動(dòng)應(yīng)變與振動(dòng)速度的關(guān)系公式,基于隧道混凝土襯砌動(dòng)拉應(yīng)力容許標(biāo)準(zhǔn),確定了適用于金山頂高鐵隧道的爆破安全允許振動(dòng)速度控制標(biāo)準(zhǔn),采用薩道夫斯基經(jīng)驗(yàn)衰減公式對(duì)爆破振動(dòng)速度監(jiān)測(cè)數(shù)據(jù)進(jìn)行回歸分析,得到了適用于金山頂高鐵隧道的爆破振動(dòng)衰減經(jīng)驗(yàn)公式,對(duì)爆破振動(dòng)波形圖進(jìn)行了時(shí)域分析和頻譜分析,確定了爆破振動(dòng)波的主頻域和主頻分布;其次根據(jù)爆破振動(dòng)監(jiān)測(cè)數(shù)據(jù)綜合分析結(jié)果,發(fā)現(xiàn)按照現(xiàn)有救援隧道爆破方案施工會(huì)對(duì)既有隧道結(jié)構(gòu)造成危害,因此提出了控制爆破振動(dòng)的措施對(duì)現(xiàn)有爆破方案進(jìn)行了優(yōu)化;最后運(yùn)用數(shù)值模擬手段,采用有限元軟件midas GTS NX研究新建隧道爆破施工對(duì)既有高鐵隧道的動(dòng)力響應(yīng),分析了既有隧道襯砌結(jié)構(gòu)的振動(dòng)速度、加速度、應(yīng)力分布規(guī)律,并通過(guò)振動(dòng)速度和應(yīng)力的大小對(duì)優(yōu)化后的爆破方案進(jìn)行安全評(píng)估,判斷新建救援隧道爆破施工時(shí)既有高鐵隧道襯砌結(jié)構(gòu)的安全性,以保證救援隧道的成功修建和金山頂高鐵隧道的安全運(yùn)營(yíng)。研究成果可為類(lèi)似隧道爆破施工工程提供參考。
[Abstract]:The blasting vibration wave caused by explosive explosion may cause damage to lining structure and surrounding rock of existing high-speed railway tunnel when blasting construction is carried out in the vicinity of existing high-speed railway tunnel, which will affect the safe operation of existing high-speed railway tunnel. Therefore, in order to ensure the safe operation of the existing high-speed railway tunnel, it is necessary to study this kind of project. In this paper, combined with the blasting engineering example of Jinshan Tunnel in Fuzhou Railway, the main works are as follows: firstly, the vibration theory, blasting vibration monitoring and control technology of adjacent parallel tunnel blasting are studied and summarized. Based on the field investigation and investigation, a reasonable blasting vibration monitoring scheme is established, and then according to the dynamic elasticity theory, the vibration velocity and dynamic strain data obtained from the on-site blasting vibration monitoring are combined. The relationship between dynamic strain and vibration velocity is obtained by linear fitting. Based on the allowable criterion of dynamic tensile stress of concrete lining of tunnel, the blasting safety allowable vibration speed control standard for Jinshan high-speed railway tunnel is determined. The empirical attenuation formula of blasting vibration is obtained by means of regression analysis of blasting vibration velocity monitoring data by means of Sadolski's empirical attenuation formula, and the time-domain and spectral analysis of the wave chart of blasting vibration is carried out. The main frequency domain and main frequency distribution of blasting vibration wave are determined. Secondly, according to the comprehensive analysis results of blasting vibration monitoring data, it is found that the construction of the existing rescue tunnel blasting scheme will cause harm to the existing tunnel structure. Therefore, the measures of controlling blasting vibration are put forward to optimize the existing blasting schemes. Finally, the dynamic response of new tunnel blasting to existing high-speed railway tunnel is studied by means of numerical simulation and finite element software midas GTS NX. The vibration velocity, acceleration and stress distribution of the existing tunnel lining structure are analyzed, and the safety evaluation of the optimized blasting scheme is carried out through the vibration velocity and the magnitude of the stress. In order to ensure the successful construction of rescue tunnel and the safe operation of Jinshan high-speed railway tunnel, the safety of lining structure of existing high-speed railway tunnel during blasting construction of newly built rescue tunnel is judged. The research results can provide reference for similar tunnel blasting construction engineering.
【學(xué)位授予單位】：華東交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：U455.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 嚴(yán)鵬;鄒玉君;盧文波;胡英國(guó);冷振東;張玉柱;劉亮;胡浩然;陳明;王高輝;;基于爆破振動(dòng)監(jiān)測(cè)的巖石邊坡開(kāi)挖損傷區(qū)預(yù)測(cè)[J];巖石力學(xué)與工程學(xué)報(bào);2016年03期

2 李慶文;喬蘭;陳璐;;基于精確爆破載荷分析的安全距離判據(jù)[J];工程力學(xué);2015年10期

3 鄒新寬;張繼春;潘強(qiáng);葛竟輝;;隧道明挖段拉槽爆破時(shí)既有隧道結(jié)構(gòu)動(dòng)力響應(yīng)特性[J];振動(dòng)與沖擊;2015年19期

4 蔡路軍;朱方敏;吳亮;韓芳;彭勝;;上穿公路隧道爆破對(duì)下方供水隧洞的振動(dòng)影響研究[J];公路工程;2015年03期

5 賈磊;解詠平;李慎奎;;爆破振動(dòng)對(duì)鄰近隧道襯砌安全的數(shù)值模擬分析[J];振動(dòng)與沖擊;2015年11期

6 孫艷軍;趙亞克;張世平;;新柳林河隧道掘進(jìn)爆破對(duì)既有隧道的影響[J];爆破;2015年01期

7 張振;孟益平;李和平;祝金龍;;下穿文保建筑隧道爆破的數(shù)值模擬與安全分析[J];合肥工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年09期

8 錢(qián)耀峰;王星華;;爆破施工對(duì)鄰近隧道安全的影響[J];北京交通大學(xué)學(xué)報(bào);2014年04期

9 繆圓冰;吳凌霄;;地表爆破振動(dòng)對(duì)已建隧道影響分析[J];公路交通科技(應(yīng)用技術(shù)版);2014年03期

10 胡建華;尚俊龍;羅先偉;周科平;;單孔爆破振動(dòng)監(jiān)測(cè)與衰減規(guī)律多元線性化回歸[J];振動(dòng)與沖擊;2013年16期

相關(guān)博士學(xué)位論文 前3條

1 龔倫;上下交叉隧道近接施工力學(xué)原理及對(duì)策研究[D];西南交通大學(xué);2008年

2 鄭余朝;三孔并行盾構(gòu)隧道近接施工的影響度研究[D];西南交通大學(xué);2007年

3 仇文革;地下工程近接施工力學(xué)原理與對(duì)策的研究[D];西南交通大學(xué);2003年

相關(guān)碩士學(xué)位論文 前2條

1 醋經(jīng)緯;小凈距交叉隧道爆破振動(dòng)控制技術(shù)研究[D];蘭州交通大學(xué);2014年

2 趙江倩;萬(wàn)石山隧道爆破振動(dòng)特性及施工控制技術(shù)研究[D];南昌大學(xué);2007年

，

本文編號(hào)：1977751