Behavior of Circular Concrete Columns Repaired with Steel

Behavior of Circular Concrete Columns Repaired with Steel

Behavior of Circular Concrete Columns Repaired with Steel ...

In order to increase the strengthening efficiency of steel bar mat-mortar (BM) jacket and wire mesh-mortar (WM) jacket around existed circular concrete columns, an attempt to strengthen the columns with hybrid bar mat-wire mesh-mortar (HBWM) jacket was proposed. A comparatively experimental study on axial compression behaviors of concrete columns wrapped with three different strengthening systems, namely BM, HWBM and carbon fiber reinforced polymer (CFRP) was performed.

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Behavior of Circular Fiber-Reinforced Polymer–Steel-Confined ...

Sep 09, 2019 · Abstract. This paper studied experimentally the behavior of circular fiber-reinforced polymer (FRP)–steel-confined concrete columns subjected to reversed cyclic loads. The influence of main structural factors on the cyclic behavior of the columns is discussed. Test results showed the outstanding seismic performance of FRP–steel-confined RC and steel-reinforced concrete (SRC) columns.

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Experimental behavior of circular concrete-filled steel tube ...

Feb 01, 2007 · This paper presented an experimental study on the behavior of circular, concrete-filled, steel tube (CFT) stub columns with self-compacting concrete (SCC) and normal concrete (NC) concentrically loaded in compression to failure. Four measurement methods on the axial deformation of specimens were compared.

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Behavior of heat damaged circular reinforced concrete columns ...

Sep 01, 2020 · This study aims to investigate the behavior of repaired circular reinforced concrete (RC) columns exposed to temperature considering the effect of spacing between CFRP ropes, area of CFRP ropes and degree of temperature. Nine circular column specimens with diameter of 185 mm and length of 800 mm were constructed and tested.

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Behaviour of circular concrete-filled lean duplex stainless ...

Nov 01, 2013 · In the early stages of loading, the Poisson’s ratio of the concrete core in a circular CFST column is less than that of the steel so that the steel tube does not provide confinement on the concrete core as discussed by Neogi et al. and Johansson and Gylltoft . As the loading increases, the Poisson’s ratio of concrete increases and becomes greater than that of the steel tube.

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Compressive Behavior of Circular Tubed Steel-Reinforced High ...

Sep 09, 2019 · In this paper, a total of 12 circular tubed steel-reinforced concrete (CTSRC) short columns with high-strength concrete are constructed and tested under axial compressive load. The main variables of the test include diameter-to-thickness ratio and yield strength of the steel tube, concrete strength, and the steel ratio of the profile steel.

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Structural behavior of slender circular steel-concrete ...

In an experimental and analytical study on the structural behavior of slender circular steel-concreterncomposite columns, eleven specimens were tested to investigate the effects of three ways to apply arnload to a column. The load was applied eccentrically to the concrete section, to the steel section or to the entirernsection.

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Mechanical Behavior of Circular Steel–Concrete Composite Stub ...

The bond strength had no influence on the behavior when the steel and concrete section were loaded simultaneously. On the contrary, for the columns with the load applied only to the concrete section, the bond strength highly affected the confinement effects and, consequently, the mechanical behavior of the columns.

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Cyclic behavior of damaged reinforced concrete columns ...

Apr 01, 2017 · Replacing all visually-observable cracked concrete with HPFRCC improves the cyclic behavior of repaired columns. Under the existing axial load, repairing a damaged column in the plastic hinge zone only (300 mm in height) increased the load capacity and the displacement ductility by 9% and 21%, respectively.

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Behavior of Centrally Loaded Concrete-Filled Steel-Tube Short ...

A 5 year research on concrete-filled steel tubular (CFT) column system was carried out as a part of the fifth phase of the U.S.–Japan Cooperative Earthquake Research Program, and the tests of centrally loaded short columns were finished.

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