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Analysis of High-rise Connection Building Dynamic Character and Seismic Response

Author: LiChunFeng
Tutor: DuYongFeng
School: Lanzhou University of Technology
Course: Structural Engineering
Keywords: Rise Connecting Structure Computing model Stiffness matrix Dynamic characteristics Earthquake response Random vibration Sweep vibration test
CLC: TU973.2
Type: Master's thesis
Year: 2008
Downloads: 244
Quote: 1
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Abstract


Rise Connecting structure refers to the two towers or a plurality of towers the connecting body (also known Lianlang) disposed at a certain height formed by connecting a complex structure. Senior Siamese structure system is characterized by a strong spatial coupling effect between two or more towers due to the presence of the Siamese, compared with the general analysis model, dynamic characteristics, mechanical behavior, failure modes, and the calculation method single-tower high-rise building complex. In accordance with the definition of the existing high-rise buildings of concrete structures technical regulations \In this paper, the typical high-rise twin towers conjoined structure, its computational model, the dynamic characteristics of the structure under the seismic design method with horizontal earthquake earthquake response, and series-parallel system of particles layer model connected to the body of the connector body stiffness change displacement response variance, the conjoined structure sweep vibration test analysis done a systematic study. The main contents are as follows: 1. Senior Siamese structured system of classification and calculation model study. Due to the diversity of the senior piece structure, its dynamic characteristics and seismic performance is also very different, and therefore must be classified, and not directly to the general analysis; Siamese Structural Classification based on various calculations model (series-parallel model, the three-dimensional finite element model and the continuous model) the suitability of different types of conjoined structure. 2. Senior Siamese structural stiffness matrix, the dynamic characteristics of the study. Of senior Siamese structures using \The connected twins structure of six basic shapes patterns; explore Modal Participation factor generally single-tower structure system there is a big difference in the physical nature of this structural system modal participation coefficient, and given the The vibration of this structure type select principles; Finally, through several examples of the the the aforementioned various models of the structure of the structural natural periods the Siamese location change analysis. 3 senior the Siamese seismic design and earthquake response analysis. Senior Siamese seismic design method briefly mode decomposition response spectrum method is still applicable to such complex structural system; still use the different calculation models were studied at the level of one-way through a few examples, structure under bidirectional earthquake earthquake response analysis, in-depth discussion of the dynamic response of the structure under horizontal seismic and connect body set the location of the structural deformation and internal forces affect. 4. Rise Connecting Structure stationary random vibration analysis. Stationary random response of conventional algorithms and efficient virtual excitation method discussed. As a theoretical basis, the use of Chinese scholar Lin Jiahao virtual excitation method, first obtained from the spectral values ??of the monomer in the conjoined position, monomer self-spectral response as a multi connector body fully coherent stationary random excitation, draw the analytic expression of the variance in the response of a stationary random the Siamese displacement response and connection were discussed in detail at the different connection stiffness, damping effect of the displacement variance response obtained Siamese stiffness, damping change of connection The body displacement response of the variance greater impact within a certain range. 5-piece structure sweep vibration test analysis. Brief introduction to the design and production of the test model, the acceleration of the layout and selection of the layout as well as the connection of the sensor body, and the establishment of the SAP2000 finite element model. 3 order from the structure of the three aspects of the natural vibration frequency and acceleration of the top floor and the top floor displacement of the test results and finite element analysis results were compared. Although there are some differences sweep shaking table test data and finite element analysis of the calculation results, but the change in the position of the structure with the connector body, its top level of displacement, acceleration response variation is consistent.

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CLC: > Industrial Technology > Building Science > High-rise buildings > Tall Building Structures > Structural Analysis and Calculation
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