Guidelines for structural health monitoring systems on tall buildings and a case study

Download

12626319.pdf

Date

2021-2-15

Author

Gümüş, Oğuzhan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

456
views

618
downloads

The new Turkish Building Earthquake Code requires real-time monitoring of the structural response of buildings of Earthquake Design Class 1 and 2 that are taller than 105 m. Structural health monitoring (SHM) systems on tall buildings have to comply with the SHM Guidelines by the Disaster and Emergency Management Presidency of Turkey, developed as part of two research projects that were undertaken at METU and Bogazici University. Two tall buildings in Izmir and Istanbul, respectively, were instrumented as case studies for the SHM systems on tall buildings per the new Code. This thesis presents the development of the SHM Guidelines and the instrumentation of a 216 m tall office building in Izmir, whose structural system consists of reinforced concrete (RC) core shear walls, RC moment-resisting frames with circular composite columns, and buckling-restrained braces at two mechanical floors. Structural response of the building is currently monitored in real time by a dense network of 27 channels of accelerometers. Structural system dynamic properties of the building for the first four translational modes in both East-West and North-South directions and the first four torsional modes were identified from the ambient vibration records. Structural responses of the building recorded during the earthquakes in 2019 with moment magnitudes Mw 3.9–6.0 and epicenters 15–283 km away from the building were analyzed. A finite element structural model of the building was developed. Natural vibration frequencies and vibration mode shapes from the finite element model agreed well with those from the system identification of the building.

Subject Keywords

Ambient Vibration, Dynamic Properties, Earthquake Response, Structural Health Monitoring, System Identification

URI

https://hdl.handle.net/11511/89732

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

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...
Comparison of loads in Turkish earthquake code with those computed statistically Firat, Fatih K.; Yücemen, Mehmet Semih (2015-05-01) In this study, earthquake loads are investigated statistically and compared with the nominal earthquake loads calculated according to the Turkish Earthquake Code, namely: "Specifications for Structures to be Built in Earthquake Areas". For this purpose, the "actual" mean load values estimated from statistical methods and the nominal load values computed according the Seismic Code are compared, with respect to some variations in the basic parameters, such as the importance factor, building height, site coeff...
Structural rehabilitation of damaged RC buildings after the 1 october 1995 Dinar earthquake Wasti, ST; Sucuoğlu, Haluk; Utku, M (2001-04-01) This paper contains technical information related to the Dinar project for the rehabilitation of moderately damaged reinforced concrete buildings after the 1 October 1995 Dinar earthquake. The structural appraisal of the damaged buildings, analytical studies leading to decisions regarding structural rehabilitation or demolition, the supervision on site of the rehabilitation and the overall coordination of the project was entrusted to the Middle East Technical University Earthquake Engineering Research Cente...
Seismic vulnerability, behavior and design of tunnel form building structures Balkaya, C; Kalkan, E (Elsevier BV, 2004-12-01) Multi-story reinforced concrete tunnel form buildings are one of the common structural types in regions prone to high seismic risk due to the buildings inherent earthquake resistance and ease of construction. Despite their good performance during earthquakes in 1999 in Turkey, and abundance of such structures scattered worldwide, current seismic codes and design provisions provide insufficient guidelines for their seismic design. As a compensatory measure, a series of modal and nonlinear static analyses are...
Performance-based seismic rehabilitation of damaged reinforced concrete buildings Sucuoğlu, Haluk; Gunay, MS (American Society of Civil Engineers (ASCE), 2004-10-01) A building stock consisting of 130 medium-rise reinforced concrete buildings were damaged moderately during the recent earthquakes in Turkey. These buildings were rehabilitated by using simple, cost-effective methods where the newly added shear walls comprised the primary lateral load resisting system. In the presented study, different seismic performance evaluation procedures are tested first on the samples of damaged buildings for predicting their observed performances. Then the expected performances of t...

Citation Formats

O. Gümüş, “Guidelines for structural health monitoring systems on tall buildings and a case study,” M.S. - Master of Science, Middle East Technical University, 2021.