Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Natalia Sabourova"'
Autor:
Jiwen Zhang, Natalia Sabourova, Lennart Elfgren, Chao Wang, Thomas Blanksvärd, Yongming Tu, Niklas Grip
Publikováno v:
Structure and Infrastructure Engineering. 16:861-879
This article proposes a method for assessing fatigue damage in reinforced concrete bridges based on a train-bridge coupled dynamic analysis system. The analysis system can be used to perform couple...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59067ffd73bfb7467f89247953c89e4b
https://doi.org/10.1080/15732479.2019.1671467
https://doi.org/10.1080/15732479.2019.1671467
Autor:
Yongming Tu, Lennart Elfgren, Ulf Ohlsson, Niklas Grip, Natalia Sabourova, Domagoj Damjanović, Ivan Duvnjak
Publikováno v:
Scopus-Elsevier
Damage assessment of structures includes estimation of location and severity of damage. Quite often it is done by using changes of dynamic properties, such as natural frequencies, mode shapes and damping ratios, determined on undamaged and damaged st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9250c6fc423bb3446b9ca3eb48a4ec98
https://doi.org/10.2749/guimaraes.2019.0471
https://doi.org/10.2749/guimaraes.2019.0471
Autor:
Natalia Sabourova, Lennart Elfgren, Niklas Grip, Ivan Duvnjak, Ulf Ohlsson, Yongming Tu, Domagoj Damjanović
Publikováno v:
Scopus-Elsevier
Structural damage is often a spatially sparse phenomenon, i.e. it occurs only in a small part of the structure. This property of damage has not been utilized in the field of structural damage identification until quite recently, when the sparsity-bas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::097d1819365d768fd17725ee59f29fc9
https://doi.org/10.2749/guimaraes.2019.0515
https://doi.org/10.2749/guimaraes.2019.0515
Autor:
Gabriel Sas, Xiao-chuan Qin, Natalia Sabourova, Thomas Blanksvärd, Lennart Elfgren, Yongming Tu, Cao Dafu, Shao-ping Meng, Niklas Grip, Ulf Ohlsson
Publikováno v:
Construction and Building Materials. 125:892-904
The pore structure of the hardened concrete and the microscopic changes of a few selected pores throughout the freeze-thaw test were investigated by a method combining RapidAir and digital metalloscope. Traditional tests were also performed to evalua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::192f2cf49c3792484030b9e59317508f
https://doi.org/10.1016/j.conbuildmat.2016.08.098
https://doi.org/10.1016/j.conbuildmat.2016.08.098
Autor:
Xiao-chuan Qin, Ulf Ohlsson, Thomas Blanksvärd, Lennart Elfgren, Niklas Grip, Cao Dafu, Natalia Sabourova, Shao-ping Meng, Yongming Tu
Publikováno v:
Structure and Infrastructure Engineering. 12:159-170
Prestressed concrete structures are considered to be reliable and durable. However, their long-term performance when subjected to frost attack is still unclear. In this work, experiments were carried out to evaluate the prestress losses in post-tensi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b9bd3887ab163dddcacf6f8b350c086
https://doi.org/10.1080/15732479.2014.998241
https://doi.org/10.1080/15732479.2014.998241
Publikováno v:
IABSE Congress, Stockholm 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment.
A five-span prestressed concrete bridge has been subjected to a loading test up to failure in Kiruna, Sweden. The bridge was 55 years old and had a length of 121.5 m. The test has been used to validate and calibrate existing nonlinear finite element
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d5c5fc15b06b38c6240248c8a0288a2
https://doi.org/10.2749/stockholm.2016.2093
https://doi.org/10.2749/stockholm.2016.2093
Sensitivity-based Finite Element Model Updating (FEMU) is one of the widely accepted techniques used for damage identification in structures. FEMU can be formulated as a numerical optimization problem and solved iteratively making automatic updating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46493a9f16eba1ca4e4a9b42adc4aeb1
Autor:
Jonny Nilimaa, Yongming Tu, Lennart Elfgren, Ola Enochsson, Mats Emborg, Tore Lundmark, Niklas Grip, Natalia Sabourova, Niklas Bagge
Publikováno v:
Scopus-Elsevier
A 50 year-old, 121.5 m long, five span prestressed bridge was situated in the deformation zone close to a mine in Kiruna in northern Sweden. There was a risk for uneven ground deformations so the bridge was analyzed and monitored. Results and measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b009218a8c4ebc553e053f1105be03a5
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-34954
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-34954
Autor:
Natalia Sabourova, Lech Maligranda
Relations between the norms of an operator and its complexification as a mapping from Lp to Lq has been recognized as a serious problem in analysis after the publication of Marcel Riesz's work on convexity and bilinear forms in 1926. We summarize her
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a146fb5f34560e349c0b374174fe80b
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7220
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7220
Autor:
Niklas Grip, Natalia Sabourova
For high precision measurements, accelerometers need recalibration between different measurement occasions. In this paper, we derive a simple calibration method for triaxial accelerometers with orthogonal axes. Just like previously proposed iterative
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f7ba0df81c9b290c6d2e1da0d0fe73d
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-3829
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-3829