Strengthening of masonry walls with FRP or TRM

Kišiček, Tomislav; Stepinac, Mislav; Renić, Tvrtko; Hafner, Ivan; Lulić, Luka

doi:10.14256/jce.2983.2020

Cited by 24 publications

(15 citation statements)

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“…The most often used methods for the repair of RC elements subjected to bending action is the cross section increase method, strengthening by fibre reinforced polymers (FRP), and strengthening by steel plates (connected with concrete by bolts) [54][55][56]. The cross section increase method is simple, sophisticated, and widely applicable.…”

Section: Discussionmentioning

confidence: 99%

Overview of research on fire effects in RC elements and assessment of RC structures after fire

Lakušić¹

2021

JCE

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Procedures for estimating damage and remaining bearing capacity of RC structures after fire are presented in the paper. The paper describes the effect of fire on structures, the danger it poses for the loss of human lives, and financial losses it may generate. The damage to structural RC elements of a column, beam, slab, wall, and connection details, is presented in the paper. Although RC elements are generally considered to be fire resistant, their physical and mechanical characteristics are greatly influenced by temperature, while the bearing capacity before and after fire can be determined through a number of different methods that are presented in the paper. An overview of condition assessment for RC structures after fire is proposed, and methodology for taking further action is presented.

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Section: Discussionmentioning

confidence: 99%

Overview of research on fire effects in RC elements and assessment of RC structures after fire

Lakušić¹

2021

JCE

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“…In the above expression, A is the horizontal area of the wall that is being tested, t is the wall thickness (without plaster), and l is the length of the wall between openings: Knowing the shear stress τ, and according to the calculated (estimated) compressive stress σ 0 in the vertical direction, the masonry tensile strength f t can be calculated according to [7,8]:…”

Section: In Situ Masonry Tensile Strengthmentioning

confidence: 99%

Methods for determining mechanical properties of walls

2021

JCE

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Masonry buildings with wooden floor structures, not equipped with vertical and horizontal tie beams, suffered the greatest damage in the earthquake that hit Zagreb on 22 March 2020. It is very significant to know mechanical properties of walls during preparation of the masonry buildings renovation design and, consequently, methods for determining such properties are presented in detailed in this paper. In addition to description of these methods, results obtained by testing shear strength of walls of twenty masonry buildings in Zagreb (149 measuring points in total) are also presented, as well as the results obtained by testing compressive strength of bricks on 14 buildings, using a total of 62 samples.

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“…Joint panel stirrups contribute to the confining pressure and shear strength required to prevent early brittle collapses; the movement between the columns and beams can be transmitted correctly with enough transverse reinforcement [5]. However, structural elements constructed against gravity loads or in line with seismic standards in the Mediterranean region usually lack transverse reinforcements in the junction [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Behavior of RC Beam–Column Joints Strengthened with Modified Reinforcement Techniques

et al. 2022

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Using a significant number of transverse hoops in the joint’s core is one recognized way for achieving the requirements of strength, stiffness, and ductility under dynamic loading in a column joint. The shear capacity of a joint is influenced by the concrete’s compressive strength, the anchoring of longitudinal beam reinforcement, the number of stirrups in the joint, and the junction’s aspect ratio. Seismic motion on the beam may produce shear capacity and bond breaking in the joint, causing the joint to fracture. Furthermore, due to inadequate joint design and details, the entire structure is jeopardized. In this study, the specimens were divided into two groups for corner and interior beam–column joints based on the joint reinforcement detailing. The controlled specimen has joint detailing as per IS 456:2000, and the strengthened specimen has additional diagonal cross bars (modified reinforcement technique) at the joints detailed as per IS 456:200. The displacement time history curve, load-displacement response curves, load-displacement hysteretic curve, and load cycle vs. shear stress were used to compare the results of the controlled and strengthened specimens. The findings show that adding diagonal cross bars (modified reinforcing techniques) to beam–column joints exposed to cyclic loads enhances their performance. The inclusion of a diagonal cross bar increased the stiffness of the joint by giving an additional mechanism for shear transfer and ductility, as well as greater strength with minimum cracks.

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Strengthening of masonry walls with FRP or TRM

Cited by 24 publications

References 0 publications

Overview of research on fire effects in RC elements and assessment of RC structures after fire

Overview of research on fire effects in RC elements and assessment of RC structures after fire

Methods for determining mechanical properties of walls

Behavior of RC Beam–Column Joints Strengthened with Modified Reinforcement Techniques

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