A three component force transducer for reinforced concrete structural testing

Canbay, Erdem; Ersoy, Uğur; Tankut, Tuğrul

doi:10.1016/j.engstruct.2003.10.002

Cited by 20 publications

(16 citation statements)

References 2 publications

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“…This was because the reduction of the compression strength of concrete by three times (approximately 4 MPa) could cause some problems during stages such as production, anchorage of shear wall to the existing frame etc. Although, in the literature [23,[36][37][38][39][40][41][46][47][48][49][50], 1/2 and 1/3 scales were used for the frame strengthening tests carried out based on the Turkish construction stock, the material strengths in these studies remained unchanged. Therefore, the results of both this study and all the other studies in the literature do not completely represent …”

Section: Size Effectmentioning

confidence: 99%

Experimental and Analytical Analysis of RC Frames Strengthened Using RC External Shear Walls

2011

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In this study, we have investigated the application of an external RC shear wall as a method of improving the performance of reinforced concrete (RC) frames in an earthquake. We produced a series of eight RC frames, each of which was modeled at a 1/3 scale with two floors and two spans. These frames were of the same size and had design and construction deficiencies commonly encountered in the RC buildings in Turkey. We tested four of the eight frames without any strengthening, under reversed cyclic lateral loadings resembling earthquake loads. The remaining four frames we tested under the same conditions after strengthening them with RC external shear walls. We arranged the axial force loads applied to the columns of the test models in two different ways to result in tensile and compression failure. The test results were analyzed on the basis of a comparison using static push over analysis. The results of the experimental tests and analytical studies showed that the RC external shear wall improved the seismic character of the existing RC frame as much as RC infill walls, therefore this method can be used as an alternative strengthening method. Also, the method provides effective, practical and economical strengthening that minimizes the need for additional works and does not restrict the use of the RC building.

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Section: Size Effectmentioning

confidence: 99%

Experimental and Analytical Analysis of RC Frames Strengthened Using RC External Shear Walls

2011

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“…In order to measure the development process of lateral friction force directly for different column specimens, especially large-size ones, a shear force measurement device, which is capable of measuring shear force around 300 kN under an axial load around 20,000 kN, is needed in this article. Different kinds of shear measurement devices have been proposed and some of them have been used in structural experiment measurement (Canbay et al, 2004; Liang et al, 2010; Liu and Tzo, 2002; Suresh and Tjin, 2005; Sanders, 1995). However, measurement device which meets the requirement above is extremely rare in both the literature and markets.…”

Section: Measurement Of Lateral Friction Forcementioning

confidence: 99%

Friction measurement and correction method in quasi-static tests of columns under combined axial and cyclic lateral loading

Wang

Feng

Shi

et al. 2019

Advances in Structural Engineering

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In quasi-static tests of large-scale structural columns and/or columns under large axial loads, the lateral friction force between the column and the loading system can become a significant problem: they may cause considerable deviation between the measured lateral force and the actual reaction force of the column, especially under large axial compression load. Many researchers have come up with different methods to reduce or eliminate the influence of such friction force. In this article, previous treatments on the lateral friction force in quasi-static tests are first discussed. A shear force measurement device, for accurate measurement of the friction force, is then presented and calibrated. Based on the friction forces measured by the device in real tests, a simple model is proposed to predict the lateral friction force in quasi-static tests. Using the model, the measured lateral force in such tests can be corrected to obtain the actual reaction force of the column when a friction measurement device is absent. The proposed model and the correction method are then validated using results from several previous tests.

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“…The base plates were fixed to the concrete foundation with anchor rods placed before concrete casting in the foundation for columns C2 and C3 (Figure ). In‐house fabricated transducers were placed at the exterior column bases . In this way, it was possible to monitor the column base forces (axial force, shear force and bending moment) in a highly indeterminate test.…”

Section: Experimental Programmentioning

confidence: 99%

Pseudo dynamic test of a deficient reinforced concrete frame upgraded with internal steel frames

Özçelık

Binici

Kurç

2012

Earthq Engng Struct Dyn

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Two‐story, three‐bay reinforced concrete (RC) frames with and without internal steel frame (ISF) retrofits were tested using continuous pseudo dynamic test method. The ISFs were installed to the middle bay of the RC frame. Test results indicated that ISF retrofit was beneficial in resisting deformation demands without significant damage under simulated ground motions. The ISF shifted the failure mode of the system from a brittle to a ductile mode. The test results were compared with the results of the nonlinear time history analysis. The analysis results were capable of tracing the overall behavior of global response parameters; however, estimations of local demand parameters were less accurate. Copyright © 2012 John Wiley & Sons, Ltd.

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A three component force transducer for reinforced concrete structural testing

Cited by 20 publications

References 2 publications

Experimental and Analytical Analysis of RC Frames Strengthened Using RC External Shear Walls

Experimental and Analytical Analysis of RC Frames Strengthened Using RC External Shear Walls

Friction measurement and correction method in quasi-static tests of columns under combined axial and cyclic lateral loading

Pseudo dynamic test of a deficient reinforced concrete frame upgraded with internal steel frames

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