Cyclic loading tests of an earthquake-resilient prefabricated steel frame with open-web steel channel beams

2021 ◽  
Vol 177 ◽  
pp. 106477
Author(s):  
Zheng-Xian Bai ◽  
Cun-Jie Shen ◽  
Zi-Qin Jiang ◽  
Kui-Kui Cheng ◽  
Han-Wen Wang
Keyword(s):  
Cyclic Loading ◽  
Steel Frame ◽  
Loading Tests ◽  
Cyclic Loading Tests

The Hybrid Simulation of a Steel Frame Strengthened by Fully Mechanical Braces

2005 ◽  
Vol 297-300 ◽  
pp. 635-640 ◽  
Author(s):  
Jae Hyouk Choi ◽  
Kenichi Ohi
Keyword(s):  
Cyclic Loading ◽  
Steel Frame ◽  
Earthquake Response ◽  
Braced Frame ◽  
Impulsive Excitation ◽  
Steel Bracing ◽  
Earthquake Record ◽  
Loading Tests ◽  
Cyclic Loading Tests ◽  
Bracing System

Effectiveness of steel bracing system installed with fully mechanical interfaces is experimentally demonstrated through a series of monotonic and cyclic loading tests. Also, substructuring pseudo-dynamic earthquake response tests are performed on a possible situation of a two-story braced frame upgraded by the proposed bracing system. An earthquake record and theoretical impulses are adopted as input excitations. The results show that an impulsive excitation acts more stringently on the occurrence of brace breaking.

scholarly journals Low reversed cyclic loading tests for integrated precast structure of lightweight wall with single-row reinforcement under a lightweight steel frame

2018 ◽  
Vol 5 (10) ◽  
pp. 180321 ◽  
Author(s):  
Jia Suizi ◽  
Cao Wanlin ◽  
Zhang Yuchen
Keyword(s):  
Cyclic Loading ◽  
Steel Frame ◽  
Recycled Concrete ◽  
Single Row ◽  
Reversed Cyclic Loading ◽  
Lightweight Steel ◽  
Loading Tests ◽  
Precast Structures ◽  
Cyclic Loading Tests ◽  
Reversed Cyclic

Given the development of precast structures for low-rise residential buildings, this study explores a new structure—namely, an integrated precast structure of lightweight recycled concrete wall with single-row reinforcement—under a lightweight steel frame filled with recycled concrete (integrated precast structure for short). The lightweight steel frame and lightweight wall cooperate to bear the forces. The applied concealed bracing, either a rebar bracing or a steel plate bracing, increases the shear resistance of the wall. The lightweight steel frame is designed to bear the vertical loading, whereas the seismic load in the horizontal direction is jointly borne by the frame and wall. This study presents the results of low reversed cyclic loading tests on nine specimens of integrated precast structures. An analysis is then carried out to investigate the mechanical properties of the specimens; based on these results, a formula for the force-bearing performance of the inclined section is developed. The results show satisfactory performance as an integrated piece; the proposed structure has two seismic lines of defence, with the lightweight wall restraint by the side frame being the first line and the steel frame being the second line. Because the failure of the wall can be categorized as shear failure, the restraint of the lightweight steel frame significantly reduces the potential damage of the wall. As the beams and columns of the steel frame tend to bend against failure, the wall filling helps resist sliding. Therefore, the reinforced joints of the connecting beams and columns show no visible signs of damage, indicating that the connection between the beams and columns is reliable. The narrow spacing of rebars and the setting of concealed bracing contribute to the increase in ductility and energy efficiency of the integrated structure and the evident reduction in the failure process. Furthermore, the recycled concrete increases the seismic resistance of the structure.

scholarly journals TENSILE AND CYCLIC LOADING TESTS OF HORIZONTAL BRACE USING GLUED LAMINATED TIMBER WITH STEEL INSERTED PLATE

2019 ◽  
Vol 25 (60) ◽  
pp. 655-659
Author(s):  
Shuzo HIROISHI ◽  
Akira OKADA ◽  
Naoya MIYASATO ◽  
Noburu NAKAMURA ◽  
Kenichi MAMURO ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Glued Laminated Timber ◽  
Loading Tests ◽  
Cyclic Loading Tests

scholarly journals Studi Eksperimental: Perilaku Siklik Anticompression Split-K Braced Steel Frame

2020 ◽  
Vol 14 (2) ◽  
pp. 143-153
Author(s):  
Oksa Eberly ◽  
◽  
Sri Murni Dewi ◽  
Wisnumurti Wisnumurti ◽  
◽  
...  
Keyword(s):  
Steel Frames ◽  
Cyclic Strength ◽  
Steel Frame ◽  
Lateral Loads ◽  
Cyclic Tests ◽  
Initial Stiffness ◽  
Loading Tests ◽  
Quasistatic Loading ◽  
Cyclic Loading Tests ◽  
Good Behaviour

This paper presents an experimental study on the behaviour of a braced steel frame with a proposed system: anticompression brace system (ABS) subjected to cyclic lateral loads. The ABS is proposed to deal with common brace buckling problems. In the study, split-K braced steel frames: with ABS and with ordinary brace system (OBS) were used as speciments. Cyclic loading tests were conducted to evaluate the performance of the proposed system in preventing the brace to buckle and to obtain the behaviour of the frame with ABS compared to the frame with OBS under cyclic quasistatic loading. From the cyclic tests, it was observed that the proposed system worked in preventing the braces to buckle, hence, the aimed state, “buckling prevention” was achieved. The results of the study also show that the frame with ABS had a lower initial stiffness compared to the frame with OBS, nevertheless, after exceeding drift ratio of 0.85% based on raw data or 0.64% based on fitted-curves, the frame with ABS exhibited good behaviour through lower degradations in stiffness and cyclic strength relative to the frame with OBS that experienced sudden and greater degradations.

Shear strengthening of RC short columns with CFRP grid-reinforced FRC matrix: Cyclic loading tests

2021 ◽  
pp. 103915
Author(s):  
Liying Guo ◽  
Mingke Deng ◽  
Ruizhe Li ◽  
Tong Li ◽  
Zhifang Dong
Keyword(s):  
Cyclic Loading ◽  
Shear Strengthening ◽  
Short Columns ◽  
Loading Tests ◽  
Cyclic Loading Tests
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