后张有粘结预应力混凝土结构理论与数值模拟分析

发布时间：2018-02-09 02:55

本文关键词： 预应力混凝土结构后张法有粘结承载力变形　出处：《辽宁工程技术大学》2013年硕士论文　论文类型：学位论文

【摘要】：由于建筑结构形式的不断多样化,高强度钢材和高强度(高性能)混凝土出现,使预应力混凝土的应用日益广泛,预应力混凝土能够满足现代建筑不断向大跨度、轻型、高性能方向发展的要求,本文以阜新市规划、博物展示馆中的后张有粘结预应力混凝土结构为研究对象,进行理论和数值模拟分析,以预应力损失监测和变形测量的实际数据作为理论和数值模拟分析的依据,主要完成了以下几个方面的工作：首先对预应力混凝土梁进行理论分析,主要内容包括：预应力混凝土梁受力特点；预应力混凝土梁预应力损失；预应力混凝土梁的正截面承载力计算；预应力混凝土梁反拱度计算；预应力混凝土梁裂缝验算分析。然后,建立阜新市规划、博物展示馆中的后张有粘结预应力混凝土结构有限元模型；考虑梁柱刚度相互影响,进行施工期预应力混凝土梁反拱度计算分析和竖向支撑体系的变形分析；利用数值模拟结果与监测数据的对比来验证其吻合度,即可分析有限元模型的可靠程度,作为后文分析的基础,同时又检验该后张有粘结预应力混凝土结构是否满足设计要求和施工质量。最后,对正常使用阶段后张有粘结预应力混凝土结构进行数值模拟预测分析,主要内容：包括在后张有粘结预应力混凝土结构在设计荷载和预测荷载作用下,对其预应力混凝土梁的承载力、挠度、裂缝以及对竖向支撑体系的变形进行验算分析。
[Abstract]:Because of the continuous diversification of building structure, the appearance of high strength steel and high strength (high performance) concrete makes the application of prestressed concrete more and more extensive. For the development of high performance, this paper takes the post-tensioned bonded prestressed concrete structure in Fuxin city planning and museum as the research object, and carries out theoretical and numerical simulation analysis. Based on the actual data of pre-stress loss monitoring and deformation measurement as the basis of theoretical and numerical simulation analysis, the main work is as follows: firstly, the theoretical analysis of prestressed concrete beam is carried out. The main contents include: prestressing characteristics of prestressed concrete beam, prestressing loss of prestressed concrete beam, calculation of normal section bearing capacity of prestressed concrete beam, calculation of inverse arch degree of prestressed concrete beam; The finite element model of post-tensioned bonded prestressed concrete structure in Fuxin city planning and museum is established, and the mutual influence of Liang Zhu stiffness is considered. The inverse arch degree of prestressed concrete beam and the deformation analysis of vertical bracing system are calculated and analyzed during the construction period, and the reliability of the finite element model is analyzed by comparing the numerical simulation results with the monitoring data to verify its consistency. As the basis of the later analysis, and at the same time checking whether the post-tensioned bonded prestressed concrete structure meets the design requirements and construction quality. Finally, the numerical simulation and prediction analysis of the post-tensioned prestressed concrete structure in normal service stage is carried out. The main contents are as follows: under the action of design load and prediction load, the bearing capacity, deflection, crack and deformation of vertical bracing system of prestressed concrete beams are analyzed.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU378

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