Application of composite reinforcement for modernization of buildings and structures

Cherkas, Alina; Rimshin, Vladimir

doi:10.1051/matecconf/201711700027

Cited by 26 publications

(13 citation statements)

References 8 publications

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“…To limit the magnitude of possible destruction, expansion joints are provided between segments of several adjacent spans, constructing each segment as a separate structural unit [24][25][26][27][28][29][30][31]. In the vertical direction, communication floors or powerful crossbars of interfloor ceilings are arranged [20][21][22][23][24][25].…”

Section: Resultsmentioning

confidence: 99%

“…In addition to the above-described methods of protection against progressive destruction, mainly associated with an increase in the strength of individual elements and their knots of their conjugation, structures as a whole by enhancing connectivity and continuity, the opposite approaches have also been developed, called «segmentation» [20][21][22][23][24][25][26][27][28][29][30][31], or the method controlled collapse.…”

Section: Methodsmentioning

confidence: 99%

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Construction building systems protection under emergency exposure

et al. 2019

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The structural reliability of the building ensures the building safety as a whole and the safety of the population, therefore the issue of ensuring reliability arises primarily in the design process. Buildings must be protected from destruction during all types of force, as well as in the case of load-bearing structures destruction as a result of emergency. Emergency impact on an object is an unregulated impact that is created as a result of an object getting into a special situation and can lead to its accident. The causes of structures progressive collapse are considered in this article. The main methods and methods of protecting buildings from progressive destruction are given. The calculation analysis of the monolithic reinforced concrete building frame for progressive collapse according to the method of possible damage is performed. There are many calculated and constructive proposals for solving the problems of counteracting the progressive destruction that can be divided into three categories: secondary protection measures, indirect design and direct design. In this article the resulting reinforcement of structural elements is determined taking into account the structural requirements for the continuity of longitudinal reinforcement, the minimum percentage of reinforcement. They are determined in the necessary places of additional reinforcement depending on the accepted permanent (background) reinforcement of the floors.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Construction building systems protection under emergency exposure

et al. 2019

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“…The beam B-1 bending moments in pinching equal: (19) mid-span (20) and the angle of the reference section rotation is zero. The beam B-2 bending moments are described by the equation 21which leads to the calculation of the reference moments (22) and mid-span moments (23) wherein the angle of the reference section free rotation (24) It follows that the beam B-1 without destruction can perceive as a uniform load (25) and beam B-2, respectively (26) that is half as much. Thus, if the B-1 beam will lose the ability to perceive the supporting moments due to damage to the supporting sections, and the beam itself will receive an articulated design scheme, then the resource of its bearing capacity will be reduced by half.…”

Section: Wherementioning

confidence: 99%

“…Meanwhile, even a twofold decrease in power resistance is catastrophic [26][27]. In case of partial damage to the reference sections and corresponding changes in the rotation angles of these sections, the reduction coefficients are calculated by the formula (30) 3…”

Section: Wherementioning

confidence: 99%

Reserves and exposure assessment of reinforced concrete structures safety while reducing its power resistance

2019

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Structural safety of buildings is such an engineering state of the structures operability, foundations, the features of their joint power resistance to expected loads and impacts, taking into account their possible combinations in direction, intensity and mode, which ensures the established functional use with established reliability. The structural safety of buildings depends on design, on compositional and structural solutions, technological measures during construction and operation, which must be provided at all stages of the facility’s existence (construction, operation, repair, reconstruction, dismantling and dismantling). It is necessary to take into account the structural safety parameters of reinforced concrete structures that have received corrosion damage during solving the problems of construction and reconstruction of buildings and structures. Suggestions to quantify the reserves and exposure of structural safety and, accordingly, the reduction in power resistance of corrosion-damaged reinforced concrete structures are presented in this article.

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“…The experience of Russian and foreign scientists and practitioners proves that concrete structures reinforcement using modern composite materials is more economical than traditional methods. The technology is simple and does not require the use of heavy equipment and temporary supports [5,9].…”

Section: Introductionmentioning

confidence: 99%

Experimental and calculated evaluation of carbon fiber reinforcing for increasing concrete columns carrying capacity

Кузина

Rimshin

2019

E3S Web Conf.

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The article presents the concrete columns tests results reinforced with canvases based on carbon fibers FibARM Tape 530/300 and FibARM Lamel 14/100 slats, the calculation of the use effectiveness for strengthening the compressed reinforced concrete elements. Three groups of columns were tested: unreinforced columns, columns reinforced with FibARM Tape 530/300 canvases in one layer, reinforced with FibARM Lamel 14/100 lamella (width is 100 mm), while one of the samples was reinforced with lamella only, and the other was reinforced both lamella and clamps. In addition, it was proposed calibration calculation of concrete columns reinforced with canvases based on carbon fibers FibARM Tape 530/300, the calculation purpose was to determine the bearing capacity for evaluating the suitability in the further structure operation after columns strengthening. According to the experiment results, data were obtained on the carrying capacity of centrally compressed concrete columns reinforced with carbon fiber both with a discrete arrangement of bands (strips) made of composite material along the height of the structures, as well as with their continuous wrapping (analogue of reinforced concrete holder). According to the experiment results, data were obtained on the carrying capacity of centrally compressed concrete columns reinforced with carbon fiber, both with a discrete arrangement of bands (strips) made of composite material along the height of structures, and with their continuous wrapping (analogue of reinforced concrete holder).

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Application of composite reinforcement for modernization of buildings and structures

Cited by 26 publications

References 8 publications

Construction building systems protection under emergency exposure

Construction building systems protection under emergency exposure

Reserves and exposure assessment of reinforced concrete structures safety while reducing its power resistance

Experimental and calculated evaluation of carbon fiber reinforcing for increasing concrete columns carrying capacity

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