Shake Table Tests of Structures with CFS Strap-Braced Stud Walls

2018 ◽  
Vol 763 ◽  
pp. 432-439
Author(s):  
Maria Teresa Terracciano ◽  
Bianca Bucciero ◽  
Tatiana Pali ◽  
Vincenzo Macillo ◽  
Luigi Fiorino ◽  
...  
Keyword(s):  
Shake Table ◽  
Test Program ◽  
Seismic Behaviour ◽  
Shake Table Tests ◽  
Experimental Activity ◽  
Experimental Campaign ◽  
Cold Formed Steel ◽  
The University ◽  
Reduced Scale

The unconventionality of the cold-formed steel (CFS) structures raised, in recent times, a lot of interest from many national and international companies resulting in the promotion of experimental activity with the main aim of investigating the seismic behaviour of these systems. In this perspective, a research project carried out at the University of Naples “Federico II” and funded by Lamieredil S.p.A. company started in the last years. The study included an extended experimental campaign, involving shake table tests on two three-storey prototypes in reduced scale (1:3). The investigated lateral load resisting systems were CFS strap-braced stud walls, designed as low dissipative seismic structures. The present paper illustrates case study, prototypes, test program and main shake table tests results.

Shake table tests of three storey cold-formed steel structures with strap-braced walls

2019 ◽  
Vol 17 (7) ◽  
pp. 4217-4245 ◽  
Author(s):  
Luigi Fiorino ◽  
Bianca Bucciero ◽  
Raffaele Landolfo
Keyword(s):  
Steel Structures ◽  
Shake Table ◽  
Shake Table Tests ◽  
Cold Formed Steel

Shake table tests of a full-scale two-story sheathing-braced cold-formed steel building

2017 ◽  
Vol 151 ◽  
pp. 633-647 ◽  
Author(s):  
Luigi Fiorino ◽  
Vincenzo Macillo ◽  
Raffaele Landolfo
Keyword(s):  
Full Scale ◽  
Shake Table ◽  
Shake Table Tests ◽  
Steel Building ◽  
Cold Formed Steel

Performance of Suspended Pipes and Their Anchorages During Shake Table Testing of a Seven-Story Building

2009 ◽  
Vol 25 (1) ◽  
pp. 71-91 ◽  
Author(s):  
Matthew S. Hoehler ◽  
Marios Panagiotou ◽  
José I. Restrepo ◽  
John F. Silva ◽  
Lucas Floriani ◽  
...  
Keyword(s):  
High Performance ◽  
Design Guidelines ◽  
Shake Table ◽  
Shake Table Tests ◽  
Diverse Range ◽  
Nonstructural Components ◽  
Acceleration Amplification ◽  
Number Of Cycles ◽  
The University ◽  
Story Building

This paper presents results of shake table tests on pipe systems anchored in a full-scale, seven-story building performed on the Large High-Performance Outdoor Shake Table at the University of California at San Diego on 1 May 2006. The purpose of the tests was to investigate the forces that act on post-installed anchors in buildings during a diverse range of earthquake ground motions. A sound understanding of the force levels and number of cycles is important for developing reliable anchor qualification approaches and seismic design guidelines. The tests also provide data on floor accelerations and acceleration amplification for nonstructural components in buildings during seismic events.

scholarly journals Seismic response of a small-scale masonry cross vault: Experimental investigation by performing quasi-static and shake table tests

2021 ◽  
Author(s):  
Nicoletta Bianchini ◽  
Nuno Mendes ◽  
Chiara Calderini ◽  
Paulo XAVIER Candeias ◽  
Michela Rossi ◽  
...  
Keyword(s):  
Response Spectrum ◽  
Experimental Tests ◽  
Small Scale ◽  
Shake Table ◽  
Seismic Behaviour ◽  
Shake Table Tests ◽  
Seismic Safety ◽  
Collapse Mechanisms ◽  
3D Printed ◽  
Complex Structural

Abstract The seismic safety assessment of 3D complex structural elements of historic buildings, such as cross vaults, is a challenge and experimental tests can provide relevant data for this purpose. This paper presents the results of two experimental campaigns in a reduced scale 3D printed vault characterized by asymmetric boundary conditions. The specimen adopted the typical geometry of groin vault (without ribs) and was made of polymeric bricks placed in an orthogonal bond disposition. The seismic behaviour of the vault was studied through quasi-static and dynamic tests using the shake table. In particular, an incremental dynamic analysis up to the collapse of the vault was carried out. The results obtained experimentally were analysed in terms of damage, collapse mechanisms, displacements, in-plane distortion and response spectrum-based analysis.

scholarly journals Shake Table Testing of Standard Cold-Formed Steel Storage Rack

2021 ◽  
Vol 11 (4) ◽  
pp. 1821
Author(s):  
Ahmad Firouzianhaji ◽  
Nima Usefi ◽  
Bijan Samali ◽  
Peyman Mehrabi
Keyword(s):  
Ground Motion ◽  
Concrete Block ◽  
Design Guidelines ◽  
Full Scale ◽  
Experimental Program ◽  
Shake Table ◽  
Shake Table Tests ◽  
Actual Performance ◽  
Cold Formed Steel ◽  
The Time Domain

Full-scale shake table investigations are strongly required to understand the actual performance of storage racks and to improve the rack design guidelines. This paper presents the results of full-scale shake table tests on New Zealand standard storage rack frames with two-bay and two-level to determine the dynamic characteristics of a standard rack structure and to measure the damping of the system. The experimental program was conducted in three phases. First, the identification parameters including the natural frequency and damping of the system were determined through a series of preliminary tests. Then, shake table tests were performed to capture the inelastic response of rack frames under low to medium intensities of El-Centro ground motion. Finally, the shake-table tests were repeated with scaling down the time domain and broader ranges of ground motion intensities to consider the performance of taller rack systems. In addition, a comprehensive discussion on the damping of the system is also provided based on the test results. The performance of the rack frame is described through an extensive set of measurements, including rack displacement, pallet sliding, the acceleration of a concrete block and rack frame and the damping of the system in the down-aisle direction. The results indicate that the standard rack frames are able to endure large inelastic deformations without loss of stability.

Seismic performance of ductile and nominally ductile reinforced concrete moment resisting frames. I. Experimental study

1998 ◽  
Vol 25 (2) ◽  
pp. 331-341 ◽  
Author(s):  
André Filiatrault ◽  
Éric Lachapelle ◽  
Patrick Lamontagne
Keyword(s):  
Reinforced Concrete ◽  
Time History ◽  
Experimental Results ◽  
Shake Table ◽  
Concrete Frames ◽  
Seismic Behaviour ◽  
Shake Table Tests ◽  
Moment Resisting Frames ◽  
Moment Resisting ◽  
Design Earthquake

This paper is the first of two companion papers on the evaluation of the level of protection offered by ductile and nominally ductile reinforced concrete structures in Canada. In this paper, the seismic behaviour of two half-scale reinforced concrete moment resisting frames is investigated by shake table tests. In the second paper, the experimental results obtained from the shake table tests are compared with the results generated from inelastic time-history dynamic analyses. Each frame had two bays and two storeys with overall dimensions of 5 m in width and 3 m in height. The first structure was designed as a ductile frame according to current Canadian standards; and the second structure incorporated only nominally ductile details. Two levels of intensity were retained for the historical ground motion used in the tests. The first level was representative of the design earthquake considered; the amplitudes were doubled for the second intensity. The ductile structure performed well during both tests. The frame with nominal ductility performed well during the first test, but was on the verge of collapse after the second test. Based on these experimental results, recommendations are presented to harmonize the seismic protection of ductile and nominally ductile reinforced concrete frames in Canada.Key words: moment resisting frames, earthquakes, reinforced concrete, seismic, shake table.

scholarly journals Numerical Modelling of CFS Three-Story Strap-Braced Building under Shaking-Table Excitations

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 118
Author(s):  
Alessia Campiche
Keyword(s):  
Numerical Modelling ◽  
Seismic Behavior ◽  
Numerical Models ◽  
Dynamic Properties ◽  
Shaking Table ◽  
Shake Table ◽  
Shake Table Tests ◽  
Research Activities ◽  
Story Drift ◽  
Cold Formed Steel

In recent research activities, shake-table tests were revealed to be useful to investigate the seismic behavior of cold-formed steel (CFS) buildings. However, testing full-scale buildings or reduced-scale prototypes is not always possible; indeed, predicting tools and numerical models could help designers to evaluate earthquake response. For this reason, numerical modelling of two strap-braced prototype buildings, recently tested on shake-table at University of Naples Federico II in cooperation with Lamieredil S.p.A. company, was developed. The models were validated trough the comparison between experimental and numerical results, in term of dynamic properties (fundamental period of vibration and modal shapes), peak roof drift ratios and peak inter-story drift ratios. Although dynamic properties of mock-ups were captured with accuracy by the developed models, the comparison highlighted the need to consider accumulation of damage and rocking phenomenon in the modelling to capture with good accuracy the seismic behavior of CFS strap-braced building, subjected to high intensity records.

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