淺埋隧道下穿高層建筑穩(wěn)定性及相互影響研究
發(fā)布時間：2019-01-17 07:28
【摘要】：本文以青島地鐵M3號線青島火車站至大學路區(qū)間隧道下穿山東出入境檢疫局高層建筑為工程背景，根據(jù)勘察報告及建筑物資料收集成果，將建筑物、隧道和巖土體看成一個整體，利用ABAQUS有限元數(shù)值分析，，結(jié)合強度折減法和現(xiàn)場實測數(shù)據(jù)，以強度和變形為雙重控制指標，對隧道施工過程中隧道自身及建筑物安全穩(wěn)定性進行了相關(guān)探討，對地表沉降、洞室收斂、圍巖穩(wěn)定性評估方法、建筑結(jié)構(gòu)位移控制標準等核心問題進行了深入分析。本文主要的研究工作如下： (1)探討屈服準則對強度折減安全系數(shù)的影響，與僅考慮剪切屈服的Mohr-Coulomb準則相比，修正后考慮張拉屈服的Mohr-Coulomb準則對剪切屈服和張拉屈服的巖土材料都具有普遍的適用性。 (2)利用ABAQUS程序建立有限元模型，基于圍巖壓力、基底壓力和支護阻力共同作用分析的數(shù)值模擬方法，分析隧道開挖對地表沉降和洞室變形的影響規(guī)律，并引入安全系數(shù)概念對隧道圍巖及初襯穩(wěn)定性進行評判。利用有限元強度折減法，給出了不同下穿方案和基于不同襯砌性質(zhì)的圍巖安全系數(shù)，并對其穩(wěn)定性規(guī)律進行了分析；運用有限元數(shù)值模擬計算襯砌的內(nèi)力，再根據(jù)《公路隧道設(shè)計規(guī)范》計算襯砌安全系數(shù)，依此來評價土巖條件下隧道支護參數(shù)設(shè)計的合理性。 (3)將建筑物自重下的變形值和隧道開挖完成后建筑物發(fā)生的變形值之和不大于建筑規(guī)范允許值作為地鐵近鄰建筑物位移控制指標，對高層建筑上部結(jié)構(gòu)和下部基礎(chǔ)變形分析，計算結(jié)果均滿足位移控制標準；對建筑結(jié)構(gòu)內(nèi)力進行分析，并對梁柱構(gòu)件進行承載力驗算，計算結(jié)果也滿足規(guī)范要求。 (4)對現(xiàn)場監(jiān)測數(shù)據(jù)整理分析，探討掌子面的穩(wěn)定性與地表沉降之間的聯(lián)系，分析支護結(jié)構(gòu)變形情況，分析開挖步對建筑物和地表沉降的影響，判斷隧道自身及建筑物的穩(wěn)定性趨勢。
[Abstract]:In this paper, under the tunnel between Qingdao Railway Station and University Road of Qingdao Metro Line M3, the high-rise building of Shandong Entry-Exit Inspection Bureau is taken as the engineering background. According to the survey report and the data collected from the building, the building is built. The tunnel and the rock and soil are regarded as a whole. By using the ABAQUS finite element numerical analysis, combined with the strength reduction method and the field measured data, the strength and deformation are taken as the double control indexes. This paper discusses the safety and stability of the tunnel itself and the building during the tunnel construction, and analyzes the core problems such as the ground subsidence, the convergence of the cavern, the evaluation method of the surrounding rock stability, the control standard of the displacement of the building structure and so on. The main work of this paper is as follows: (1) the influence of yield criterion on the safety factor of strength reduction is discussed, compared with the Mohr-Coulomb criterion which only considers shear yield. The modified Mohr-Coulomb criterion, which considers tensile yield, is generally applicable to both shear and tensile yielding geotechnical materials. (2) the finite element model is established by ABAQUS program. Based on the numerical simulation method of surrounding rock pressure, basement pressure and support resistance, the influence of tunnel excavation on ground subsidence and cavity deformation is analyzed. The concept of safety factor is introduced to evaluate the stability of surrounding rock and initial lining of tunnel. By using the finite element strength reduction method, the safety factors of surrounding rock based on different underpass schemes and different lining properties are given, and its stability law is analyzed. The internal force of lining is calculated by using finite element numerical simulation, and then the safety factor of lining is calculated according to the Design Code of Highway Tunnel, and the rationality of tunnel support parameter design under the condition of soil and rock is evaluated. (3) the sum of the deformation value under the weight of the building and the deformation value of the building after the tunnel excavation is not greater than the allowable value of the building code is taken as the displacement control index of the building near the subway. For the deformation analysis of the superstructure and the lower foundation of the high-rise building, the calculated results meet the displacement control standard. The internal force of building structure is analyzed and the bearing capacity of Liang Zhu member is checked. (4) analyze the monitoring data, discuss the relation between the stability of the face and the surface settlement, analyze the deformation of the supporting structure, and analyze the influence of the excavation step on the building and the surface settlement. Judge the stability trend of tunnel itself and buildings.
【學位授予單位】：青島理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U451;TU973
本文編號：2409764
[Abstract]:In this paper, under the tunnel between Qingdao Railway Station and University Road of Qingdao Metro Line M3, the high-rise building of Shandong Entry-Exit Inspection Bureau is taken as the engineering background. According to the survey report and the data collected from the building, the building is built. The tunnel and the rock and soil are regarded as a whole. By using the ABAQUS finite element numerical analysis, combined with the strength reduction method and the field measured data, the strength and deformation are taken as the double control indexes. This paper discusses the safety and stability of the tunnel itself and the building during the tunnel construction, and analyzes the core problems such as the ground subsidence, the convergence of the cavern, the evaluation method of the surrounding rock stability, the control standard of the displacement of the building structure and so on. The main work of this paper is as follows: (1) the influence of yield criterion on the safety factor of strength reduction is discussed, compared with the Mohr-Coulomb criterion which only considers shear yield. The modified Mohr-Coulomb criterion, which considers tensile yield, is generally applicable to both shear and tensile yielding geotechnical materials. (2) the finite element model is established by ABAQUS program. Based on the numerical simulation method of surrounding rock pressure, basement pressure and support resistance, the influence of tunnel excavation on ground subsidence and cavity deformation is analyzed. The concept of safety factor is introduced to evaluate the stability of surrounding rock and initial lining of tunnel. By using the finite element strength reduction method, the safety factors of surrounding rock based on different underpass schemes and different lining properties are given, and its stability law is analyzed. The internal force of lining is calculated by using finite element numerical simulation, and then the safety factor of lining is calculated according to the Design Code of Highway Tunnel, and the rationality of tunnel support parameter design under the condition of soil and rock is evaluated. (3) the sum of the deformation value under the weight of the building and the deformation value of the building after the tunnel excavation is not greater than the allowable value of the building code is taken as the displacement control index of the building near the subway. For the deformation analysis of the superstructure and the lower foundation of the high-rise building, the calculated results meet the displacement control standard. The internal force of building structure is analyzed and the bearing capacity of Liang Zhu member is checked. (4) analyze the monitoring data, discuss the relation between the stability of the face and the surface settlement, analyze the deformation of the supporting structure, and analyze the influence of the excavation step on the building and the surface settlement. Judge the stability trend of tunnel itself and buildings.
【學位授予單位】：青島理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U451;TU973
【參考文獻】
相關(guān)期刊論文 前10條
1 姜立新;;邊坡穩(wěn)定安全系數(shù)影響因素探討[J];四川建筑科學研究;2010年05期
2 楊臻;鄭穎人;張紅;王謙源;宋雅坤;;巖質(zhì)隧洞圍巖穩(wěn)定性分析與強度參數(shù)的探討[J];地下空間與工程學報;2009年02期
3 鄭穎人;;隧洞破壞機理及設(shè)計計算方法[J];地下空間與工程學報;2010年S2期
4 侯學淵,廖少明;盾構(gòu)隧道沉降預(yù)估[J];地下工程與隧道;1993年04期
5 湖潤洲;從節(jié)約用地與地下空間開發(fā)看中國大城市地鐵建設(shè)與發(fā)展[J];地鐵與輕軌;1997年02期
6 靳曉光;李曉紅;;高地應(yīng)力區(qū)深埋隧道三維應(yīng)力場數(shù)值模擬[J];重慶大學學報(自然科學版);2007年06期
7 任洋;李天斌;熊國斌;林之恒;;基于可拓理論的高地應(yīng)力隧道圍巖分級法及應(yīng)用[J];工程地質(zhì)學報;2012年01期
8 劉英;于立宏;;Mohr-Coulomb屈服準則在巖土工程中的應(yīng)用[J];世界地質(zhì);2010年04期
9 李浩;王濤;徐日慶;;隧道施工對框架結(jié)構(gòu)及地表位移影響的數(shù)值分析[J];鐵道工程學報;2008年09期
10 陳力華;靳曉光;;有限元強度折減法中邊坡三種失效判據(jù)的適用性研究[J];土木工程學報;2012年09期
本文編號：2409764
本文鏈接：http://sikaile.net/kejilunwen/sgjslw/2409764.html
