本文關(guān)鍵詞：城市隧道爆破振動對周圍環(huán)境影響評價及控制技術(shù)研究　出處：《西南交通大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 城市隧道 爆破振動 鄰近建筑物 人群心理影響 減振

【摘要】：近年來隨著中國城市化進(jìn)程明顯加快,城市隧道等地下交通工程不斷涌現(xiàn)。與山嶺隧道相比,城市隧道具有埋藏淺,地表建筑物密集的特點(diǎn),采用鉆爆法進(jìn)行施工時,施工振動會對鄰近建筑物的結(jié)構(gòu)安全及附近居民的正常生產(chǎn)生活造成負(fù)面影響。如何系統(tǒng)評價爆破施工振動對周圍環(huán)境的影響,以及采取何種減振控制措施,是一個極具現(xiàn)實(shí)意義的研究課題。本文以重慶渝中連接隧道工程為背景,針對隧道爆破施工過程中的爆破振動效應(yīng)對近接建筑物結(jié)構(gòu)安全性影響、爆破振動效應(yīng)對人員心理影響、振動控制措施等方面問題進(jìn)行了一系列研究,本論文主要研究工作及研究成果體現(xiàn)在以下幾個方面：(1)通過三維數(shù)值模擬計算方法研究了隧道爆破施工時的地表振速分布規(guī)律。計算表明隧道的已開挖區(qū)及既有近接隧道對爆破振動有放大作用。繪制了隧道沿線地表振速分區(qū)圖,并結(jié)合現(xiàn)場實(shí)測數(shù)據(jù)對重慶渝中連接隧道沿線地表建筑物進(jìn)行了結(jié)構(gòu)安全性評價。(2)通過三維數(shù)值模擬計算方法研究了隧道爆破施工時,近接地鐵車站的振動響應(yīng)特點(diǎn)。計算結(jié)果表明地鐵車站靠近爆源一側(cè)直墻的振速最大,最大速度小于地鐵車站結(jié)構(gòu)安全振動控制標(biāo)準(zhǔn)值。(3)通過現(xiàn)場調(diào)查、統(tǒng)計回歸的方法分析了不同年齡、性別人員對爆破振動的心理反饋,在此基礎(chǔ)上推導(dǎo)了基于人群心理影響的振速控制標(biāo)準(zhǔn)值計算公式。(4)根據(jù)計算結(jié)果,結(jié)合渝中連接隧道的實(shí)際工程情況,優(yōu)化了爆破施工區(qū)段；并研究了上臺階機(jī)械開挖與下臺階爆破開挖組合施工的減振方法。數(shù)值模擬計算結(jié)果和現(xiàn)場實(shí)測數(shù)據(jù)表明組合工法可以有效控制地表振速。
[Abstract]:In recent years, with the acceleration of urbanization in China, urban tunnels and other underground traffic projects have been emerging. Compared with mountain tunnels, urban tunnels have the characteristics of shallow burial and dense surface buildings. When drilling and blasting method is used in construction, construction vibration will have a negative impact on the structural safety of adjacent buildings and the normal production and life of nearby residents. How to systematically evaluate the impact of blasting construction vibration on the surrounding environment. And what kind of vibration reduction and control measures, is a very practical research topic. This paper takes Chongqing Yuzhong Tunnel Project as the background. Aiming at the influence of blasting vibration effect on the safety of adjacent buildings, the effects of blasting vibration effects on personnel psychology, vibration control measures and so on, a series of researches have been carried out in the light of the blasting vibration effect during tunnel blasting construction. The main research work and results of this thesis are reflected in the following aspects: 1). The distribution law of surface vibration velocity in tunnel blasting construction is studied by using three-dimensional numerical simulation method. The calculation shows that the excavation area and the existing adjacent tunnel can enlarge the blasting vibration, and draw the surface surface along the tunnel. Vibration velocity zoning. The structural safety evaluation of the surface buildings along the Yuzhong connecting tunnel in Chongqing is carried out with the field measured data.) the blasting construction of the tunnel is studied by using the three-dimensional numerical simulation method. The results show that the vibration velocity of the subway station near the side of the explosion source is the largest, and the maximum velocity is less than the standard value of the safety vibration control of the subway station structure. The result of calculation shows that the vibration velocity of the subway station is less than the standard value of the safety vibration control of the subway station structure. The method of statistical regression is used to analyze the psychological feedback of people of different ages and genders on blasting vibration. On this basis, the formula of calculating standard value of vibration velocity control based on the psychological influence of crowd is deduced. Combined with the actual engineering situation of Yuzhong connecting tunnel, the blasting construction section is optimized. The vibration absorption method of the combined construction of mechanical excavation and blasting excavation is studied. The numerical simulation results and field measured data show that the combined method can effectively control the surface vibration velocity.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U455.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 張玉成;楊光華;劉鵬;姚捷;姜燕;;爆破荷載在數(shù)值計算中的等效施加方法研究[J];地下空間與工程學(xué)報;2012年01期

2 張建華,李世祿;耦合裝藥擴(kuò)腔半徑的探討[J];爆破;2001年02期

3 張云鵬,李存國;爆破地震效應(yīng)安全判據(jù)的發(fā)展[J];河北理工學(xué)院學(xué)報;2003年03期

4 張向東;高捷;閆維明;;環(huán)境振動對人體健康的影響[J];環(huán)境與健康雜志;2008年01期

5 宋春生;李鵬飛;蒲傳金;;沖擊鉆孔振動對埋地管道的安全判據(jù)探討[J];天然氣技術(shù)與經(jīng)濟(jì);2011年01期

6 楊小林,王夢恕,王樹仁;爆破對巖體基本質(zhì)量的影響及試驗(yàn)研究[J];巖土工程學(xué)報;2000年04期

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