A Comparative study on nonlinear modeling of structural walls

Download
index.pdf
2018
Dursun, Süleyman Eren
Show full item record
442
views
240
downloads
The need for tall buildings increases day by day because of many reasons such as increase in population. Representing the behavior of tall buildings under seismic loads is a complicated problem. Thus, in structural engineering, performance based analysis and design approach is generally used for tall buildings which may require nonlinear analysis of buildings. In such an analysis, however, modeling of structural walls has several challenges especially for the ones with irregular cross sections. Therefore, this study mainly focuses on the comparison of different nonlinear modeling approaches for the structural walls. First, a calibration study was conducted. For this purpose, typical wall layouts were modeled with different modeling approaches and elastic linear analysis results were compared with the theoretical solutions. Results showed that finite element modeling approach is good enough for the elastic analysis of structural walls. Then, walls were modeled as distributed inelasticity (fiber) model with Perform3D and ETABS and also continuum model were created utilizing TNO Diana. The analyses results were compared with experimental results for rectangular and T-shaped walls. Results indicated that both modeling approaches can capture the behavior of planar walls under cyclic loading but fiber model over-estimate the capacity of the flanged walls. As a final step, 4 (squat wall) and 15 (slender wall) story buildings having a core wall were modeled elastically with ETABS and designed according to ASCE7-10 and ACI-318. These buildings were modeled nonlinearly with both Perform3D and TNO Diana. Behavior of the buildings was compared according to pushover and time history analyses. With this comparison it was seen that fiber modeling approach cannot capture the effect of shear cracks in concrete. Moreover, fiber model cannot correctly calculate the behavior of wall flanges under tension.
Tall buildings., Apartment houses., High-rise apartment buildings., Reinforced concrete construction.
http://etd.lib.metu.edu.tr/upload/12622615/index.pdf
https://hdl.handle.net/11511/27538
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

A Study on the preliminary design of tall buildings: investigating structural components
Çamlıbel, Gülçin; Ay, Bekir Özer; Department of Building Science in Architecture (2019)
Tall buildings are built to respond to limited and high-cost urban land problem, and they became essential for urbanization which changes the sights of the cities. These buildings are huge investments, and keeping Net Floor Area (NFA) within acceptable limits while satisfying stiffness and strength requirements of the building is important; therefore, different structural systems are improved in order to overcome huge lateral load demands. Since simple design approaches and rule-of-thumb dimensioning method...
Planning considerations of tall buildings : service core configuration and typologies
Keskin, Zeynep; Günel, Mehmet Halis; Department of Building Science in Architecture (2012)
In general, tall buildings, some of which are termed as “skyscrapers”, are among the typical and almost unavoidable features of the metropolitan cities. There is a competititive race of constructing higher and higher buildings since the birth of the infamous Home Insurance Building in Chicago which is still considered to be the pioneer of the modern tall buildings. Recently, an efficient service core design is strongly needed and inquired with the increase in height and capacity of tall buildings. Such need...
The Integration of tall buildings with the urban environment: considering the key sustainability concepts
Tohumcu, Tulu; Zeytun Çakmaklı, Ayşem Berrin; Baş Bütüner, Funda; Department of Building Science in Architecture (2014)
As a result of physical, social and economic needs, demand for tall buildings is increasing worldwide. Due to their great size and large impacts on the urban environment, tall buildings, through careful design and urban integration, have the potential to improve the quality around them. Also, depending on their large area of influence, design considerations regarding sustainability and environmental integration of tall buildings need to be handled with more care than with other conventional buildings to pro...
A comparative study on the strengthening of RC frames
Erdem, I; Akyuz, U; Ersoy, U; Ozcebe, G (2003-05-13)
In order to improve the behavior of buildings and in order to prevent total collapse, necessary amount of strengthening must be provided. The frame of the test specimen (1/3 scaled, 2-story, 3-bay) is detailed such that it has the common deficiencies of existing buildings in Turkey. Two types of strengthening techniques, namely introducing an infill RC wall, and CFRP strengthened hollow clay tile wall, are investigated. The test specimens are subjected to reversed cyclic quasi-static loading. By means of sp...
An Algorithm for Efficient Urban Building Energy Modeling and Simulation
Işeri, Orçun Koral; Gürsel Dino, İpek (null; 2020-05-23)
The urban population increases continuously since the industrial revolution, and the residential buildings have the primary responsibility for the total energy demand. There is a need for the analysis of the residential building stock for energy efficiency and sustainable planning. However, energy modeling and simulation in urban scale is expensive in computational complexity and time, due to various building geometries and occupancy types. This research proposes a method to increase the efficiency of the s...
Citation Formats
S. E. Dursun, “A Comparative study on nonlinear modeling of structural walls,” M.S. - Master of Science, Middle East Technical University, 2018.
METU IIS - Integrated Information Service open@metu.edu.tr