超高层建筑结构健康监测系统研究与设计

发布时间：2018-09-09 18:06

【摘要】：随着工程技术的发展，社会物质文明的进步，我国城市化进程的加快，建筑结构的形式朝着更新、更复杂的方向发展。城市中的高层建筑结构的平均高度每年都在提升，由此带来的结构安全问题也越来越多地受到社会各界的关注。超高层建筑具有其耗资巨大、结构形式复杂、工期长、使用年限长等特点，使得结构施工期间的误差控制，，结构运营期间的安全性、适用性和耐久性要求更加严格。为了使结构正常运营，必须对结构的性能和状态进行实时的跟踪监测。超高层建筑结构的监测包括施工期监测和运营期监测两部分。施工期间，结构为达到设计预期需要对竖向构件的变形以及楼层整体的空间变位进行严格控制，因此监测的主要内容为承重构件的应力应变及局部结构的竖向位移；运营期间，结构将长时间受到环境作用（主要为水平风力作用），因此监测的内容主要有结构的整体位移、加速度、水平侧移、关键构件的应力应变等。其中施工监测的成果将作为施工控制的依据和运营期监测的原始数据。本文的研究来源于实际中在建的某超高层建筑，该超高层建筑采用巨型框架-伸臂-核心筒的结构形式，其中建筑主体结构屋盖高度达588m，塔尖高度达646m，属于大型地标性建筑。文章对以下几方面内容进行了重点研究：针对结构在超高层建筑施工期间的变形结构受到混凝土徐变、收缩的影响，对结构在施工前、施工后以及构件在整个施工过程中的变形进行了详细分析；由于施工期间混凝土的浇筑、钢结构的拼接，使得结构处于不完整状态，构件的应力不断变化，文中对部分重要的结构构件进行了施工过程应力分析。针对结构运营期受风荷载影响较大的问题，文章对伸臂桁架、腰桁架等传递水平应力的结构进行了细致的应力分析，并且对主要结构的抗风性能进行了对比。根据超高层建筑结构在施工期、运营期的计算分析，给出了运营期建筑结构健康监测系统的总体框架、功能模块和布点设置，并给出了监测各参数所需的各类传感器
[Abstract]:With the development of engineering technology, the progress of social material civilization, the acceleration of urbanization in our country, the form of building structure is developing in the direction of renewal and complexity. The average height of high-rise buildings in cities is rising every year, and the structural safety problems are paid more and more attention by all walks of life. Super high-rise building has the characteristics of huge cost, complicated structure form, long construction period, long service life, etc., which makes the requirements of error control, safety, applicability and durability more strict during the construction period of the structure, and the safety, applicability and durability of the structure during the operation period. In order to make the structure work properly, it is necessary to track and monitor the performance and state of the structure in real time. The monitoring of super-high-rise building structure includes two parts: monitoring during construction period and monitoring in operation period. During the construction period, the deformation of the vertical members and the spatial displacement of the whole floor should be strictly controlled in order to meet the design expectations, so the main contents of the monitoring are the stress and strain of the load-bearing members and the vertical displacement of the local structures. The structure will be subjected to environmental action (mainly horizontal wind force) for a long time, so the monitoring contents mainly include the whole displacement of the structure, acceleration, horizontal lateral displacement, stress and strain of the key components, etc. The results of construction monitoring will be used as the basis of construction control and the original data of operation period monitoring. The research of this paper comes from a super high-rise building under construction in practice. The super high-rise building adopts the structure form of mega-frame, arm extension and core tube, in which the roof height of the main structure is 588m, the height of the tower tip is 646m, which belongs to the large-scale landmark building. This paper focuses on the following aspects: according to the influence of concrete creep and shrinkage on the deformation structure during the construction of super high-rise building, before construction, After construction and during the whole construction process, the deformation of the members is analyzed in detail. Because of the concrete pouring during construction and the splicing of steel structure, the structure is in an incomplete state, and the stress of the members is constantly changing. In this paper, the stress analysis of some important structural members during construction is carried out. Aiming at the problem that the wind load affects the structure operation period, the paper makes a detailed analysis of the horizontal stress transfer structure such as arm truss and waist truss, and compares the wind resistance of the main structures. According to the calculation and analysis of super high-rise building structure during construction and operation period, the general frame, function module and location setting of building structure health monitoring system in operation period are given, and various kinds of sensors for monitoring each parameter are given.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU978

【相似文献】