带托柱转换层钢筋混凝土高层建筑结构基于性能的抗震设计
发布时间：2019-06-15 21:36
【摘要】：带托柱转换层的高层钢筋混凝土建筑结构，因其结构形式在竖直方向上不规则，所以在地震作用下的受力特性较为复杂。但此建筑结构由于空间布置的灵活性，又广泛应用于现代对使用功能要求多元化的高层建筑中。我国抗震规范中“小震不坏、中震可修、大震不倒”的抗震设防目标，虽然可以保证结构的安全，但它可能导致中、大震作用下结构正常使用功能的丧失而引起巨大的经济损失。为了强化结构抗震的安全目标，提高结构抗震性能，满足不同业主的安全需要，国际上开始研究和应用基于性能的抗震设计方法。在带托柱转换层的高层建筑结构抗震设计中采用基于性能的抗震设计方法有助于提高托柱转换结构抗震设计的可靠性、避免抗震安全隐患，，同时又促进托柱转换结构的技术发展。 本文在参考了大量国内外文献的基础上，对比了常用的两种托柱转换结构，即梁式托柱转换结构和桁架式托柱转换结构，他们的受力特点、计算原则、布置原则和设计原则。并比较了中、美两国性能目标的确定原则，且基于我国的现行规范确定了托柱转换结构的性能目标及在不同性能目标下的性能指标。 文中以一带转换层的高层钢筋混凝土建筑结构为案例，提出了三种转换桁架及一种转换梁的设计方案。按照性能目标的选用原则，确定了本建筑结构的性能目标，且基于该性能目标采用SATWE软件对结构进行抗震设计。并利用有限元软件Midas Building建立结构的有限元模型分别对结构进行多遇地震、设防地震和罕遇地震水准作用下的地震反应分析。最后通过对比几种设计方案下结构在不同地震水准时的抗震性能从而总结了不同形式转换层的受力及抗震性能，并推荐出相对较优的托柱转换层结构型式，以期为类似工程的设计提供些许参考。
[Abstract]:Because the structural form of high-rise reinforced concrete building with bracket-column transfer floor is irregular in vertical direction, the stress characteristics of high-rise reinforced concrete building under earthquake action are more complex. However, due to the flexibility of spatial layout, this building structure is widely used in modern high-rise buildings with diversified functional requirements. Although the seismic fortification target of "small earthquake is not bad, medium earthquake can be repaired and large earthquake can not fall" in the seismic code of our country, although it can ensure the safety of the structure, it may lead to the loss of the normal use function of the structure under the action of medium and large earthquakes and cause huge economic losses. In order to strengthen the seismic safety goal of the structure, improve the seismic performance of the structure and meet the safety needs of different owners, the performance-based seismic design method has been studied and applied in the world. The performance-based seismic design method in the seismic design of high-rise building structures with support column transfer floor is helpful to improve the reliability of seismic design of support-column transfer structure, avoid the hidden danger of seismic safety, and at the same time promote the technical development of support-column transfer structure. On the basis of referring to a large number of domestic and foreign literatures, this paper compares two commonly used support column transfer structures, namely, beam support column transfer structure and truss support column transfer structure, their stress characteristics, calculation principles, layout principles and design principles. The determination principles of the performance objectives of China and the United States are compared, and the performance objectives of the bracket transfer structure and the performance indexes under different performance objectives are determined based on the current specifications of our country. Taking the high-rise reinforced concrete building structure with transfer floor as an example, three kinds of transfer trusses and one kind of transfer beam design scheme are put forward in this paper. According to the selection principle of the performance target, the performance goal of the building structure is determined, and based on the performance goal, the seismic design of the structure is carried out by using SATWE software. The finite element model of the structure is established by using the finite element software Midas Building to analyze the seismic response of the structure under the action of frequent earthquakes, fortification earthquakes and rare earthquakes. Finally, by comparing the seismic performance of several design schemes under different seismic levels, the stress and seismic performance of different forms of transfer stories are summarized, and a relatively optimal structure type of support column transfer floor is recommended, in order to provide some reference for the design of similar projects.
【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】：TU973.31
本文编号：2500539
[Abstract]:Because the structural form of high-rise reinforced concrete building with bracket-column transfer floor is irregular in vertical direction, the stress characteristics of high-rise reinforced concrete building under earthquake action are more complex. However, due to the flexibility of spatial layout, this building structure is widely used in modern high-rise buildings with diversified functional requirements. Although the seismic fortification target of "small earthquake is not bad, medium earthquake can be repaired and large earthquake can not fall" in the seismic code of our country, although it can ensure the safety of the structure, it may lead to the loss of the normal use function of the structure under the action of medium and large earthquakes and cause huge economic losses. In order to strengthen the seismic safety goal of the structure, improve the seismic performance of the structure and meet the safety needs of different owners, the performance-based seismic design method has been studied and applied in the world. The performance-based seismic design method in the seismic design of high-rise building structures with support column transfer floor is helpful to improve the reliability of seismic design of support-column transfer structure, avoid the hidden danger of seismic safety, and at the same time promote the technical development of support-column transfer structure. On the basis of referring to a large number of domestic and foreign literatures, this paper compares two commonly used support column transfer structures, namely, beam support column transfer structure and truss support column transfer structure, their stress characteristics, calculation principles, layout principles and design principles. The determination principles of the performance objectives of China and the United States are compared, and the performance objectives of the bracket transfer structure and the performance indexes under different performance objectives are determined based on the current specifications of our country. Taking the high-rise reinforced concrete building structure with transfer floor as an example, three kinds of transfer trusses and one kind of transfer beam design scheme are put forward in this paper. According to the selection principle of the performance target, the performance goal of the building structure is determined, and based on the performance goal, the seismic design of the structure is carried out by using SATWE software. The finite element model of the structure is established by using the finite element software Midas Building to analyze the seismic response of the structure under the action of frequent earthquakes, fortification earthquakes and rare earthquakes. Finally, by comparing the seismic performance of several design schemes under different seismic levels, the stress and seismic performance of different forms of transfer stories are summarized, and a relatively optimal structure type of support column transfer floor is recommended, in order to provide some reference for the design of similar projects.
【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】：TU973.31
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