Flexible joints between RC frames and masonry infill for improved seismic performance – shake table tests

2020 ◽  
pp. 499-507
Author(s):  
T. Rousakis ◽  
E. Papadouli ◽  
A. Sapalidis ◽  
V. Vanian ◽  
A. Ilki ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Shake Table ◽  
Flexible Joints ◽  
Shake Table Tests ◽  
Masonry Infill ◽  
Rc Frames

SEISMIC PERFORMANCE OF MASONRY-INFILLED RC FRAMES WITH AND WITHOUT RETROFIT

2013 ◽  
Vol 07 (03) ◽  
pp. 1350023 ◽  
Author(s):  
P. BENSON SHING ◽  
IOANNIS KOUTROMANOS ◽  
ANDREAS STAVRIDIS
Keyword(s):  
Finite Element ◽  
Seismic Performance ◽  
Numerical Study ◽  
Critical Role ◽  
Finite Element Models ◽  
Shake Table ◽  
Shake Table Tests ◽  
Rc Frames ◽  
Infilled Rc Frames ◽  
Masonry Infilled Rc Frames

This paper presents the findings of a research that focused on the seismic performance of masonry-infilled, nonductile, RC frames. This research has resulted in improved analytical methods and effective retrofit techniques to assess and enhance the performance of these structures. The methods were validated by a series of quasi-static tests conducted on one-story frame specimens as well as shake-table tests conducted on two 2/3-scale, three-story, two-bay, masonry-infilled, RC frames. This paper focuses on the observations from the shake-table tests and the further insight gained from a numerical study conducted with finite element models. The first shake-table test specimen had no retrofit measures, and the second had infill walls in the first and second stories strengthened with Engineered Cementitious Composite (ECC) and Fiber Reinforced Polymeric (FRP) overlays, respectively. The tests demonstrated the effectiveness of the retrofit measures. Finite element models that combine smeared and discrete cracks have been used in a numerical study to examine the benefits of the ECC retrofit and the influence of the capacity of the shear dowels that connect an ECC overlay to the RC beams on structural performance. It has been shown that these shear dowels play a critical role in enhancing both the strength and ductility of a retrofitted structure.

Seismic performance of pile group-structure system in liquefiable and non-liquefiable soil from large-scale shake table tests

2020 ◽  
Vol 138 ◽  
pp. 106299 ◽  
Author(s):  
Chengshun Xu ◽  
Pengfei Dou ◽  
Xiuli Du ◽  
M. Hesham El Naggar ◽  
Masakatsu Miyajima ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Large Scale ◽  
Group Structure ◽  
Pile Group ◽  
Shake Table ◽  
Shake Table Tests ◽  
Structure System ◽  
Liquefiable Soil

Seismic Performance of a Base Isolated Structure by Shake Table Tests

2008 ◽  
Author(s):  
Cem Yenidoǧan ◽  
Eren Uçkan ◽  
Adolfo Santini ◽  
Nicola Moraci
Keyword(s):  
Seismic Performance ◽  
Shake Table ◽  
Shake Table Tests

Physical Model Study of the Seismic Performance of Highway Embankments with and without Geotextile

2017 ◽  
Vol 11 (02) ◽  
pp. 1750003 ◽  
Author(s):  
Ayşe Edinçliler ◽  
Yasin Sait Toksoy
Keyword(s):  
Seismic Performance ◽  
Structural Safety ◽  
Shake Table ◽  
Geosynthetic Reinforcement ◽  
Shake Table Tests ◽  
Seismic Safety ◽  
Dynamic Motion ◽  
Slope Inclination ◽  
Highway Embankments ◽  
Motion Characteristics

In order to ensure structural safety and integrity in earthquake conditions, it may be useful or even necessary to increase the seismic safety of the highway embankments with reinforcement inclusions. The inclusion of geosynthetics in highway embankments may provide an additional tensile strength and durability to construct more stable and earthquake resistant embankments. In this study, the contributions of the primary factors as inclusion of the geotextile reinforcement, slope inclination and dynamic motion characteristics affecting the seismic performance of the highway embankments are evaluated. Shake table models of the unreinforced and geosynthetic reinforced highway embankments with different slope inclinations are designed. An extensive series of shake table tests were performed under dynamic motions with different predominant frequencies. Test results revealed that inclusion of geotextiles in the embankment model causes deamplification of the transmitted accelerations traveling through the reinforced embankment models. Thus, the geosynthetic reinforcement successfully enhances the seismic performance and mitigates earthquake-related hazards. Contribution of this study to the literature is that the efficiency of the geosynthetic reinforcement by means of energy absorption properties is highly dependent on the dynamic motion characteristics but less dependent to the degree of slope inclination.

Low-seismic damage strategies for infilled RC frames: shake-table tests

2017 ◽  
Vol 46 (14) ◽  
pp. 2419-2438 ◽  
Author(s):  
Hanhui Zhang ◽  
J.S. Kuang ◽  
Terry Y.P. Yuen
Keyword(s):  
Seismic Damage ◽  
Shake Table ◽  
Shake Table Tests ◽  
Rc Frames ◽  
Infilled Rc Frames

Seismic Performance of Stone Masonry Buildings Used in the Himalayan Belt

2013 ◽  
Vol 29 (4) ◽  
pp. 1159-1181 ◽  
Author(s):  
Qaisar Ali ◽  
Akhtar Naeem Khan ◽  
Mohammad Ashraf ◽  
Awais Ahmed ◽  
Bashir Alam ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Cost Effective ◽  
Stone Masonry ◽  
Shake Table ◽  
Masonry Buildings ◽  
Masonry Structures ◽  
Limit States ◽  
Shake Table Tests ◽  
Capacity Curves ◽  
Rubble Stone Masonry

Rubble-stone masonry structures are found abundantly in the Asian countries along the Himalayan range. Such structures are usually constructed in dry-stone masonry or are constructed in mud mortar, which makes them susceptible to damage and collapse in earthquakes. In order to study the seismic behavior of these structures, dynamic shake table tests on three reduced-scale rubble-stone masonry models were conducted. The models comprised a representative school building, a residential building, and a model incorporating simple cost-effective features in the form of horizontal and vertical reinforced concrete elements. This paper presents the results of shake table tests carried out on rubble-stone masonry buildings including: damage pattern, capacity curves, damage limit states, and response modification factors of these structures. Test data indicates that seismic performance of rubble-stone masonry structures can be significantly improved by incorporating cost-effective features such as vertical members and relatively thin horizontal bands.

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