【摘要】：隨著我國高速鐵路以及盾構(gòu)法施工的快速發(fā)展,在山區(qū)和城市出現(xiàn)了大量采用盾構(gòu)法施工的高速鐵路隧道。盾構(gòu)法施工具有安全、高效、自動化程度高、對周邊擾動小等優(yōu)勢,但在盾構(gòu)隧道中通常會出現(xiàn)較多的交叉結(jié)構(gòu)形式,如聯(lián)絡(luò)橫通道結(jié)構(gòu)、到發(fā)豎井、泵房等,還包括近距離空間交叉的盾構(gòu)隧道主體結(jié)構(gòu)。因此,本文結(jié)合廣深港客運專線獅子洋隧道,開展了實測列車振動荷載條件下,聯(lián)絡(luò)橫通道的隧道交叉結(jié)構(gòu)、近距離空間垂直交叉盾構(gòu)隧道的塑性損傷理論,和應(yīng)力、加速度時程分析。主要研究工作和成果如下：(1)闡述了列車振動效應(yīng)所涉及的相關(guān)計算理論,包括：動力學(xué)計算原理、混凝土損傷理論、混凝土強度降低理論。并論述了材料阻尼問題、模型動力邊界條件、混凝土塑性損傷本構(gòu)關(guān)系等。(2)為了真實的模擬出列車編組在隧道進口段、洞內(nèi)段、出口段的時間、空間效應(yīng),采用了獨特的荷載曲線施加方式,將實測列車振動曲線以豎向激振荷載的形式施加在列車輪軸上,同時在列車模型上施加列車自重,二力均由輪軸傳遞至軌道,同時在列車編組上施加相應(yīng)的速度,該方式可有效模擬荷載的時空變化。(3)分析了聯(lián)絡(luò)橫通道隧道交叉結(jié)構(gòu),以及近距離空間垂直交叉隧道在不同階段(新建隧道與運營隧道)的振動效應(yīng),及其在隧道進口段、洞內(nèi)段、出口段的響應(yīng)特征。對比了應(yīng)力、加速度、壓致?lián)p傷、拉致?lián)p傷等力學(xué)參數(shù)的差異。(4)針對運營劣化隧道,在獲得隧道劣化后主要力學(xué)指標(biāo)的基礎(chǔ)上,開展了列車不同行駛速度對應(yīng)振動荷載的動力響應(yīng)分析,研究了聯(lián)絡(luò)橫通道交叉結(jié)構(gòu)關(guān)鍵截面的損傷等動力響應(yīng)特性。
[Abstract]:With the rapid development of high-speed railway and shield construction in China, there are a large number of high-speed railway tunnels constructed by shield method in mountainous areas and cities. Shield tunneling has the advantages of safety, high efficiency, high automation, low disturbance to the surrounding area, etc. However, there are usually many cross structure forms in shield tunnel, such as connecting cross passage structure, going to shaft, pumping room, etc. The main structure of shield tunnel is also included. Therefore, combined with Lion Yang Tunnel of Guangzhou-Shenzhen passenger dedicated Line, the plastic damage theory and stress of tunnel cross structure, vertical cross shield tunnel in close space, under the condition of train vibration load, are carried out in this paper. Acceleration time history analysis. The main research work and results are as follows: (1) the related calculation theory of train vibration effect is expounded, including: dynamics calculation principle, concrete damage theory, concrete strength reduction theory. The material damping problem, the dynamic boundary condition of the model and the constitutive relation of plastic damage of concrete are discussed. (2) in order to simulate the time and space effect of train formation in the entrance section, the inner section and the exit section of the tunnel, In this paper, a unique load curve is used to apply the measured train vibration curve to the train axle in the form of vertical excited vibration load, and at the same time, the train deadweight is applied on the train model, and the two forces are transferred from the axle to the track. At the same time, the corresponding speed is applied to train formation, which can effectively simulate the space-time variation of load. (3) the cross structure of the tunnel is analyzed. The vibration effect of the vertical cross tunnel in close space at different stages (new tunnel and operating tunnel) and its response characteristics in the entrance section, the inner section and the outlet section of the tunnel are also discussed. The differences of mechanical parameters such as stress, acceleration, compression damage and tensile damage are compared. (4) based on the main mechanical indexes after tunnel deterioration, The dynamic response of the train with different speeds corresponding to the vibration load is analyzed. The dynamic response characteristics of the key sections of the cross section of the connecting cross passage are studied.
【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】：U451.3

【參考文獻】

相關(guān)期刊論文 前10條

1 丁祖德;彭立敏;雷明鋒;施成華;;高速鐵路隧道列車振動響應(yīng)影響因素分析[J];鐵道科學(xué)與工程學(xué)報;2011年04期

2 丁伯陽;宋新初;袁金華;;飽和土隧道內(nèi)集中荷載作用下振動位移反應(yīng)的Green函數(shù)解答[J];工程力學(xué);2009年06期

3 凌昊;鄭余朝;仇文革;龔倫;;深圳地鐵重疊隧道列車振動響應(yīng)測試與數(shù)值分析[J];城市軌道交通研究;2010年08期

4 孟凡兵;林從謀;鄭強;黃志波;鄧成豪;;四車道擴挖隧道爆破振動對新建隧道的影響[J];華僑大學(xué)學(xué)報(自然科學(xué)版);2012年01期

5 張勁;王慶揚;胡守營;王傳甲;;ABAQUS混凝土損傷塑性模型參數(shù)驗證[J];建筑結(jié)構(gòu);2008年08期

6 方秦;還毅;張亞棟;陳力;;ABAQUS混凝土損傷塑性模型的靜力性能分析[J];解放軍理工大學(xué)學(xué)報(自然科學(xué)版);2007年03期

7 廖朝華;郭小紅;;我國修建跨海峽海底隧道的關(guān)鍵技術(shù)問題[J];隧道建設(shè);2008年05期

8 寧建國;商霖;孫遠翔;;混凝土材料沖擊特性的研究[J];力學(xué)學(xué)報;2006年02期

9 林剛;;列車振動對地鐵重疊隧道結(jié)構(gòu)力學(xué)行為的影響[J];鐵道建筑技術(shù);2006年03期

10 關(guān)寶樹;高速鐵路與隧道工程[J];鐵道建筑;1995年06期

相關(guān)博士學(xué)位論文 前1條

1 黃娟;基于損傷理論的高速鐵路隧道結(jié)構(gòu)振動響應(yīng)分析及疲勞壽命研究[D];中南大學(xué);2010年

相關(guān)碩士學(xué)位論文 前1條

1 汪偉松;列車荷載作用下立體交叉隧道結(jié)構(gòu)動力響應(yīng)分析[D];西南交通大學(xué);2009年

，

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