型钢混凝土组合结构施工模拟分析
发布时间：2018-12-06 18:39
【摘要】：从上世纪80年代初以来，随着社会和经济的高速发展，我国建筑业也发生了翻天覆地的变化，高层建筑的数量也越来越多。然而，随着大量型钢混凝土组合结构的出现，原有的设计理念已经不适应日益复杂的施工条件。传统设计方法只关心最终的成型状态，对结构过程的成型状态则从不过问。因此，类似于型钢混凝土组合结构的大型复杂结构体系在施工阶段的受力性能研究成为一个亟待解决的课题。 针对施工期研究中存在的一些问题，也根据型钢混凝土组合结构的实际情况，本文以一栋40层的型钢混凝土组合结构为工程依托，采用有限元分析软件SAP2000v15.0，建立合理的有限元分析模型。通过有限元软件，对结构进行一次性加载与施工模拟加载，在模型中考虑施工荷载、混凝土徐变、收缩、施工找平、型钢与混凝土之间的粘结性能等诸多因素的影响，得到梁、柱、剪力墙、楼板的内力并进行分析比较，得出型钢混凝土组合结构采用一次性加载法与施工模拟加载法之间的区别与规律，为现代高层建筑设计与施工提供重要的依据。围绕这一目的，本文主要研究工作如下： ①详细介绍型钢混凝土组合结构的概念，分析目前型钢混凝土结构的研究和应用现状，以及其优缺点和高层建筑施工的应用现状，提出本文需要研究的问题。 ②针对高层建筑结构体系，探讨型钢混凝土组合结构施工期受力的影响因素，以及材料的本构关系和施工模拟分析的基本原理，为建立超高层建筑结构并进行一次性加载和施工模拟施工加载模拟分析提供理论依据。 ③利用大型有限元计算软件SAP2000，采用模拟施工过程加载计算方法对超高层建筑结构进行了数值模拟，并得出计算出的梁、柱、板和剪力墙内力结果。 ④通过SAP2000对结构进行模拟施工过程加载和一次性加载，整理出两种方法下梁、柱、剪力墙、板的内力值，进行比较分析，并得出两者间的区别和规律。 ⑤针对模拟施工过程加载方法，分别采用PKPM与SAP2000进行建模分析，根据上述两种分析模型的计算结果，确定SAP2000模拟施工过程的分析结果的合理性。 本文对型钢混凝土组合结构一次性加载与施工模拟加载分析对比，目的在于将施工模拟后的状态作为恒载对结构作用状态的反映。算例计算结果表明，相对于一次性加载，，模拟施工过程加载方法考虑了更多的因素，更好地反映高层结构在施工过程中的受力状态，计算结果偏于安全，保证了结构在建造的过程中有更大的可靠度与安全性。同时，对PKPM和SAP2000两种软件的计算结果进行施工模拟对比分析，确定了SAP2000模拟施工过程的分析结果的合理性，能够对实际工程提供有效的意见。 总而言之，本文通过对型钢混凝土组合结构的施工模拟分析，得出更合理的力学性能，并为现代高层建筑提供更为可靠地设计依据，得到更安全、更合理的配筋。
[Abstract]:Since the beginning of 1980s, with the rapid development of society and economy, the construction industry of our country has also undergone earth-shaking changes, and the number of high-rise buildings has become more and more. However, with the emergence of a large number of steel reinforced concrete composite structures, the original design concept has not been adapted to the increasingly complex construction conditions. The traditional design method only cares about the final forming state, but never cares about the forming state of the structure process. Therefore, it is an urgent task to study the mechanical behavior of large complex structural system similar to SRC composite structure in construction stage. In view of some problems existing in the research during the construction period, and according to the actual situation of the steel reinforced concrete composite structure, based on a 40-story steel reinforced concrete composite structure, the finite element analysis software SAP2000v15.0, is adopted in this paper. A reasonable finite element analysis model is established. Through finite element software, the structure is subjected to one-off loading and construction simulation loading. The beam is obtained by taking into account the factors such as construction load, concrete creep, shrinkage, construction leveling, bond property between steel and concrete, and so on. The internal forces of columns, shear walls and slabs are analyzed and compared, and the differences and rules between the one-off loading method and the construction simulation loading method for SRC composite structures are obtained, which provide an important basis for the design and construction of modern high-rise buildings. The main research work of this paper is as follows: 1 the concept of SRC composite structure is introduced in detail, and the present research and application status of SRC structure is analyzed. And its advantages and disadvantages and the application status of high-rise building construction, put forward the problems that need to be studied in this paper. 2 in view of the structure system of high-rise building, this paper discusses the factors that affect the stress of SRC composite structure during construction, the constitutive relation of materials and the basic principle of construction simulation analysis. The theoretical basis is provided for the construction of super high-rise building structure and the simulation analysis of single load and construction simulation. (3) the large finite element calculation software SAP2000, is used to simulate the construction process and the internal forces of beams, columns, plates and shear walls are obtained. (4) the internal force values of beams, columns, shear walls and plates under two methods are sorted out by using SAP2000 to simulate the construction process and one time loading, and the differences and rules between the two methods are obtained. (5) according to the loading method of simulated construction process, PKPM and SAP2000 are used to model and analyze respectively. According to the calculation results of the above two kinds of analysis models, the rationality of the analysis results of SAP2000 simulation construction process is determined. The purpose of this paper is to compare the one-off loading of SRC composite structure with the simulated construction load, and the purpose of this paper is to take the simulated state of construction as the reflection of dead load to the action state of the structure. The calculation results show that the loading method of simulated construction process takes more factors into account and better reflects the stress state of high-rise structure in the construction process, and the calculation result is more safety than that of one-off loading. It ensures greater reliability and safety of the structure in the process of construction. At the same time, the construction simulation results of PKPM and SAP2000 are compared and analyzed, and the rationality of the analysis results of SAP2000 simulation construction process is determined, which can provide effective opinions for practical projects. In a word, through the construction simulation analysis of the steel reinforced concrete composite structure, the more reasonable mechanical performance is obtained, and the more reliable design basis is provided for the modern high-rise building, and the safer and more reasonable reinforcement is obtained.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398.9;TU765
本文编号：2366474
[Abstract]:Since the beginning of 1980s, with the rapid development of society and economy, the construction industry of our country has also undergone earth-shaking changes, and the number of high-rise buildings has become more and more. However, with the emergence of a large number of steel reinforced concrete composite structures, the original design concept has not been adapted to the increasingly complex construction conditions. The traditional design method only cares about the final forming state, but never cares about the forming state of the structure process. Therefore, it is an urgent task to study the mechanical behavior of large complex structural system similar to SRC composite structure in construction stage. In view of some problems existing in the research during the construction period, and according to the actual situation of the steel reinforced concrete composite structure, based on a 40-story steel reinforced concrete composite structure, the finite element analysis software SAP2000v15.0, is adopted in this paper. A reasonable finite element analysis model is established. Through finite element software, the structure is subjected to one-off loading and construction simulation loading. The beam is obtained by taking into account the factors such as construction load, concrete creep, shrinkage, construction leveling, bond property between steel and concrete, and so on. The internal forces of columns, shear walls and slabs are analyzed and compared, and the differences and rules between the one-off loading method and the construction simulation loading method for SRC composite structures are obtained, which provide an important basis for the design and construction of modern high-rise buildings. The main research work of this paper is as follows: 1 the concept of SRC composite structure is introduced in detail, and the present research and application status of SRC structure is analyzed. And its advantages and disadvantages and the application status of high-rise building construction, put forward the problems that need to be studied in this paper. 2 in view of the structure system of high-rise building, this paper discusses the factors that affect the stress of SRC composite structure during construction, the constitutive relation of materials and the basic principle of construction simulation analysis. The theoretical basis is provided for the construction of super high-rise building structure and the simulation analysis of single load and construction simulation. (3) the large finite element calculation software SAP2000, is used to simulate the construction process and the internal forces of beams, columns, plates and shear walls are obtained. (4) the internal force values of beams, columns, shear walls and plates under two methods are sorted out by using SAP2000 to simulate the construction process and one time loading, and the differences and rules between the two methods are obtained. (5) according to the loading method of simulated construction process, PKPM and SAP2000 are used to model and analyze respectively. According to the calculation results of the above two kinds of analysis models, the rationality of the analysis results of SAP2000 simulation construction process is determined. The purpose of this paper is to compare the one-off loading of SRC composite structure with the simulated construction load, and the purpose of this paper is to take the simulated state of construction as the reflection of dead load to the action state of the structure. The calculation results show that the loading method of simulated construction process takes more factors into account and better reflects the stress state of high-rise structure in the construction process, and the calculation result is more safety than that of one-off loading. It ensures greater reliability and safety of the structure in the process of construction. At the same time, the construction simulation results of PKPM and SAP2000 are compared and analyzed, and the rationality of the analysis results of SAP2000 simulation construction process is determined, which can provide effective opinions for practical projects. In a word, through the construction simulation analysis of the steel reinforced concrete composite structure, the more reasonable mechanical performance is obtained, and the more reliable design basis is provided for the modern high-rise building, and the safer and more reasonable reinforcement is obtained.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398.9;TU765
【参考文献】
相关期刊论文 前2条
1 曹裕阳;刘开强;;高层建筑结构分阶段施工的受力分析[J];四川建筑;2007年06期
2 王光远;论时变结构力学[J];土木工程学报;2000年06期
相关博士学位论文 前1条
1 孙璨;钢筋混凝土结构长期徐变收缩效应研究应用[D];哈尔滨工业大学;2010年
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