Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
FORCED AND AMBIENT VIBRATION TESTS OF A SIX-STORY PRECAST CONCRETE BUILDING
Date
2017-05-12
Author
Çelik, Ozan Cem
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
212
views
0
downloads
Cite This
This paper presents a sequence of forced and ambient vibration tests performed on a six-story precast concrete building prior to any non-structural elements in place. The building is 20.2 m tall and 53.2 m by 15.8 m in plan. In forced vibration testing, the building is excited along its short and long axes, respectively, by a fifth-floor level vibration generator with a known sinusoidal force. Sweeping the vibration generator frequency from 0.5 to 9.5 Hz, structural vibrations are recorded by a dense network of 22 uniaxial accelerometers deployed throughout the building. Upon signal processing of the records with the use of the analytical signal, an application of the Hilbert transform, acceleration and displacement-frequency response curves are determined. In ambient vibration testing, the building is presumably excited by a white noise random process. Ambient vibrations are recorded for at least 30 minutes following each forced vibration test setup with the same configuration of accelerometers. Structural system dynamic properties are then identified using well-established straightforward methods in the structural dynamics area from forced vibration testing and using frequency domain decomposition methods from ambient vibration testing. Natural vibration frequencies, modal damping capacities, and vibration mode shapes are subsequently compared. These comparisons justify the use of ambient vibration records in lieu of the forced vibration test of the building.
Subject Keywords
Buildings
,
Dynamic properties
,
Dynamic tests
,
Field tests
,
Identification
URI
https://hdl.handle.net/11511/55297
Collections
Department of Civil Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
AMBIENT VIBRATION RECORDS IN REPRODUCING THE FORCED VIBRATION TEST RESULTS OF A FOUR-STORY REINFORCED CONCRETE BUILDING WITH TWO BASEMENT FLOORS
Çelik, Ozan Cem (2015-05-14)
In forced vibration testing, a vibration generator bolted to one of the top floors excites the building with a known sinusoidal force. Sweeping the frequency of the vibration generator, steady-state structural responses are recorded at each operated frequency by accelerometers deployed throughout the building. Dynamic properties of the structural system are then identified from acceleration-frequency response curves by using well-established methods in the structural dynamics area, which do not require soph...
Evaluation of floor vibration in an existing building
Semerdöken, Yavuz; Yakut, Ahmet; Department of Civil Engineering (2019)
Vibration serviceability is a major concern in the design of lighter floor systems of newer buildings. Floor vibrations due to walking and rhythmic movements of the occupants should not exceed threshold levels for the comfort of occupants and the protection of sensitive equipment in the buildings. The objective of this study is to evaluate the floor vibration problem reported in a six-story reinforced concrete with two basement floors office building. First, structural system dynamic properties of the build...
Dynamic performances of kinematically and dynamically adjustable planar mechanisms
İyiay, Erdinç; Soylu, Reşit; Department of Mechanical Engineering (2003)
In this thesis, the dynamic performances of kinematically and dynamically adjustable planar mechanisms have been investigated. An adjustable mechanism is here defined to be a mechanism where some of the kinematic and/or dynamic parameters are changed in a controlled manner in order to optimize the dynamic behaviour of the mechanism in spite of variable operating conditions. Here, variable operating conditions refer to variable load(s) on the mechanism and/or variable desired input motion. The dynamic behavi...
Forced Vibration Testing and Seismic Fragility Assessment of Instrumented Structures (FORAGAINST)
Çelik, Ozan Cem(2016-2-07)
The objectives of this proposed research are to perform forced vibration tests on the following reinforced concrete structures, which are permanently instrumented for recording their dynamic responses in the case of future earthquakes in Turkey: a four-story dormitory building in Bolu, a four-story office building in Istanbul, a five-story hospital building in Antakya, a three-story school building in Antakya, and a four-story university building in Izmir, and to derive seismic fragilities for these structu...
Design of a complex modulus test system for viscoelastic materials.
Erdoğan, Bilgeha; Özgen, Gökhan O..; Department of Mechanical Engineering (2019)
In this thesis, the design of test devices for dynamic characterization of elastomer materials and elastomer vibration control components are designed. For this purpose, two different studies are conducted. In the first study, an already installed test setup is modified to provide preloading capability. In the second study, a completely new test setup is established. Conceptual design studies are carried out based on the information obtained in the literature and related standards, then the validity of the ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
O. C. Çelik, “FORCED AND AMBIENT VIBRATION TESTS OF A SIX-STORY PRECAST CONCRETE BUILDING,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55297.