城市隧道施工中对地上建筑物的监控量测及安全评估
发布时间：2018-07-20 14:51
【摘要】：随着我国经济的不断发展、社会的不断进步,大城市和特大城市的中心地区人口密集、交通拥挤,这些问题成为制约社会发展的阻力!长久以来,为解决交通拥堵这些问题,主要是靠不断扩大城市用地来实现的。但是随着人口的不断增加,扩大城市用地不符合当前我国用地紧缺的实情,为实现可持续发展,我们将发展的焦点放在了地下空间的开发中。隧道施工中对地面建筑物影响较大,导致地上建筑破坏的事故频传,然而国内对隧道施工中地上建筑的安全评估的研究非常少,因此城市对到施工中对地面建筑物的安全监测以及安全评估具有十分重要的意义。本文将依托重庆两江大桥渝中连接隧道工程,运用文献调研、数值计算以及工程实践的方法。首先,对相关的国内外文献就行查阅,包括国内外关于近接建筑物监控量测的研究成果、工程经验以及研究方法,然后使用有限元软件MIDAS-GTS对隧道洞室各个开挖阶段进行模拟,隧道洞内相应断面和相应地表以及上层建筑物的影响,和地表的沉降以及房屋倾斜。针对国内外的研究现状,借鉴其他学者的研究成果,对隧道开挖与地面建筑物之间的影响问题进行研究和总结。然后对隧道开挖中的卸荷引起地层和结构物内力应力应变变化的规律进行研究,并提出地表和结构物变形时候的时效特征。其次针对地面建筑物安全指标,即沉降和倾斜提出安全标准值。最后对隧道下穿的建筑物——农业银行住宅楼和农业银行行政楼的监测数据进行研究,以影响建筑安全使用的沉降、倾斜变形为评判要素,对建筑物的安全进行评估。以及对隧道施工中下穿农业银行进行数值模拟,制作建筑物变形时空曲线图,并对建筑物进行安全评估。最后得出:①从规范查询、经验公式以及建模计算三方面确定安全指标的标准值,得出农业银行住宅楼和行政楼的最大沉降标准值为20mm,农业银行住宅楼和行政楼整体倾斜度安全标准值为0.002。②施工阶段农业银行住宅楼和行政楼变形值在安全合理范围之内。③对隧道施工阶段进行数值模拟,得知随着隧道开挖,地面沉降不断增大,并得知农业银行住宅楼和行政楼基础最大沉降值以及整体倾斜度均在合理范围内。
[Abstract]:With the continuous development of China's economy, the continuous progress of the society, the dense population and traffic congestion in the central areas of big cities and megacities, these problems have become resistance to the development of the society. For a long time, to solve the problems of traffic congestion, it is mainly realized by expanding urban and municipal land. But with the increasing population, The expansion of urban land use does not conform to the fact that the land is scarce in our country. In order to achieve sustainable development, the focus of our development is on the development of underground space. In the tunnel construction, the impact of the ground buildings on the ground buildings is greater, which leads to the failure of the buildings on the ground. However, the study on the safety assessment of the ground buildings in the tunnel construction is not a study in China. The city is very important to the safety monitoring and safety assessment of the ground buildings in the construction. This paper will rely on the Chongqing Liangjiang bridge Yuzhong connection tunnel project, using literature research, numerical calculation and engineering practice. First, the relevant domestic and foreign literature will be consulted, including the domestic and foreign related documents. The research results, engineering experience and research methods of monitoring and measuring near the building, and then using the finite element software MIDAS-GTS to simulate the excavation stages of tunnel caverns, the influence of the corresponding section and the corresponding surface and the upper structure in the tunnel, the settlement of the surface and the tilting of the buildings. In view of the research results of other scholars, the influence of tunnel excavation on ground buildings is studied and summarized. Then the law of stress and strain changes in the inner force of the strata and structures in the tunnel excavation is studied, and the time characteristics of the surface and structure deformation are put forward. Secondly, the safety of the ground building is aimed at the safety of the ground buildings. In the end, the monitoring data of the buildings under the tunnel, the Agricultural Bank residential building and the administrative building of the Agricultural Bank, are studied in order to affect the settlement of the building safety, the slope deformation as the evaluation factor, the evaluation of the safety of the building, and the lower wear of agricultural silver in the tunnel construction. The spatial and temporal curves of the building deformation are made, and the safety assessment of the buildings is made. Finally, the standard value of the safety index is determined from three aspects: the standard inquiry, the empirical formula and the modeling calculation. The maximum settlement standard of the Agricultural Bank residential building and the administrative building is 20mm, the Agricultural Bank residential building and the administrative building. The total slope safety standard value is 0.002.. The deformation value of the Agricultural Bank residential building and the administrative building in the construction stage is within the safe and reasonable range. Thirdly, the numerical simulation of the tunnel construction stage is carried out. It is found that the ground settlement increases with the tunnel excavation, and the maximum settlement value and the overall inclination of the Agricultural Bank's residential and administrative building foundation and the overall tilt are learned. The degree is within a reasonable range.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U456.3;TU196
本文编号：2133888
[Abstract]:With the continuous development of China's economy, the continuous progress of the society, the dense population and traffic congestion in the central areas of big cities and megacities, these problems have become resistance to the development of the society. For a long time, to solve the problems of traffic congestion, it is mainly realized by expanding urban and municipal land. But with the increasing population, The expansion of urban land use does not conform to the fact that the land is scarce in our country. In order to achieve sustainable development, the focus of our development is on the development of underground space. In the tunnel construction, the impact of the ground buildings on the ground buildings is greater, which leads to the failure of the buildings on the ground. However, the study on the safety assessment of the ground buildings in the tunnel construction is not a study in China. The city is very important to the safety monitoring and safety assessment of the ground buildings in the construction. This paper will rely on the Chongqing Liangjiang bridge Yuzhong connection tunnel project, using literature research, numerical calculation and engineering practice. First, the relevant domestic and foreign literature will be consulted, including the domestic and foreign related documents. The research results, engineering experience and research methods of monitoring and measuring near the building, and then using the finite element software MIDAS-GTS to simulate the excavation stages of tunnel caverns, the influence of the corresponding section and the corresponding surface and the upper structure in the tunnel, the settlement of the surface and the tilting of the buildings. In view of the research results of other scholars, the influence of tunnel excavation on ground buildings is studied and summarized. Then the law of stress and strain changes in the inner force of the strata and structures in the tunnel excavation is studied, and the time characteristics of the surface and structure deformation are put forward. Secondly, the safety of the ground building is aimed at the safety of the ground buildings. In the end, the monitoring data of the buildings under the tunnel, the Agricultural Bank residential building and the administrative building of the Agricultural Bank, are studied in order to affect the settlement of the building safety, the slope deformation as the evaluation factor, the evaluation of the safety of the building, and the lower wear of agricultural silver in the tunnel construction. The spatial and temporal curves of the building deformation are made, and the safety assessment of the buildings is made. Finally, the standard value of the safety index is determined from three aspects: the standard inquiry, the empirical formula and the modeling calculation. The maximum settlement standard of the Agricultural Bank residential building and the administrative building is 20mm, the Agricultural Bank residential building and the administrative building. The total slope safety standard value is 0.002.. The deformation value of the Agricultural Bank residential building and the administrative building in the construction stage is within the safe and reasonable range. Thirdly, the numerical simulation of the tunnel construction stage is carried out. It is found that the ground settlement increases with the tunnel excavation, and the maximum settlement value and the overall inclination of the Agricultural Bank's residential and administrative building foundation and the overall tilt are learned. The degree is within a reasonable range.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U456.3;TU196
【参考文献】
相关硕士学位论文 前1条
1 李兵;鸦来公路沙子垭隧道施工监控量测和信息反馈研究[D];吉林大学;2007年
，本文编号：2133888
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