Seismic Response of Steel Beams Coupling Concrete Walls

Harries, Kent A.; Mitchell, Denis; Cook, William D.; Redwood, Richard G.

doi:10.1061/(asce)0733-9445(1993)119:12(3611)

Cited by 123 publications

(43 citation statements)

References 5 publications

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“…Conventionally RC coupling beams with longitudinal exural and transverse shear reinforcement may be inadequate due to brittle failures in the form of diagonal or sliding cracking [32]. A number of coupling beam designs, such as diagonally reinforced concrete coupling beams [11,12,[33][34][35] and steel coupling beams [15,19,36], have been proposed. The degree of coupling is a function of the strength and relative sti ness of the beam and wall.…”

Section: Coupling Beamsmentioning

confidence: 99%

“…Therefore, in this research, the coupling beams are designed to yield in shear, according to the method proposed by Harries et al [15], in conjunction with the AISC Seismic Provisions [39] for shear links in an eccentrically braced frame. The steel coupling beam should be embedded in the wall to control cracking; therefore, its capacity can be developed.…”

Section: Steel Coupling Beammentioning

confidence: 99%

“…This leads to deep beams with heavy reinforcement, requiring extra formwork and much labor in construction. For this reason, di erent techniques have been proposed instead of conventional coupling beams [13][14][15][16][17][18][19][20][21][22][23]. Some researchers have turned to steel coupling beams, with their ends embedded in two adjacent walls, instead of reinforced concrete coupling beams [13,[16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Steel and Concrete Coupling Beam on Seismic Behavior of RC Frame Accompanied with Coupled Shear Walls

Bengar

Ski

2017

Scientia Iranica

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Abstract. Construction of diagonal reinforcement in concrete coupling beam is di cult; therefore, its replacement is steel coupling beam. A review of the related literature shows that a few studies have considered seismic behavior of RC coupled wall with steel coupling beam. In this paper, the in uence of an increase in building height on the seismic nonlinear behavior of dual structural systems in the form of RC frames accompanied with RC coupled shear walls once with concrete, and then with steel coupling beam was investigated. Therefore, the buildings with 7, 14, and 21 stories and containing RC coupled wall systems with concrete and steel coupling beams were used to perform the pushover analysis with di erent load patterns. Some seismic parameters, such as ductility factor, response modi cation factor due to ductility, over-strength factor, response modi cation factor (R), and displacement ampli cation factor (C d ) were studied. Regarding the results, the response modi cation factor for the mentioned structural system is higher than the values used in codes of practice for seismic resistant design of buildings. In addition, the displacement ampli cation factor and the response modi cation factor increase as the structure height decreases and the values of these factors at steel coupling beam structures are higher than those at concrete coupling beams.

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Section: Coupling Beamsmentioning

confidence: 99%

Section: Steel Coupling Beammentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Steel and Concrete Coupling Beam on Seismic Behavior of RC Frame Accompanied with Coupled Shear Walls

Bengar

Ski

2017

Scientia Iranica

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“…Diagonally reinforced coupling beams in this case are also ineffective due to the small angle of inclination resulting from the relatively long beams [3]. Thus, flexure-critical steel coupling beams were used for the prototype structure (Harries et al [26,27]; El-Tawil et al [6]). Because the coupling beams are relatively long, they were designed using rolled W-sections in order to simplify the construction process.…”

Section: Design Of Coupling Beams and Iteration Of Wall Pier Designmentioning

confidence: 99%

Design of coupled wall structures as evolving structural systems

Eljadei¹,

Harries²

2014

Engineering Structures

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Coupled wall (CW) structures are outstanding lateral load resisting systems that not only reduce the deformation demands on the building, but also distribute inelastic deformation both vertically and in plan, between the coupling beams and the wall piers. When subjected to large seismic loads, coupling beams may deteriorate relatively quickly exhibiting both strength and stiffness degradation. This results in a rapid evolution in the performance of the CW system from behaving as a coupled wall system to behaving as a system of linked wall piers (LWP). This evolution of behavior is the focus of this work which considers a prototype 12-storey reinforced concrete coupled core wall (CCW) building. Five prototype variations, having the same wall pier pairs but degrading degrees of coupling were designed to study the effects of decayed coupling action. Elastic analyses using the equivalent lateral force (ELF) procedure and the continuous medium method (CMM) were used to establish initial proportions for the CCW prototype, and to determine the design forces and moments. Nonlinear static and dynamic analyses were conducted to investigate the CCW structural behavior, adequacy of the design, and the effect of the evolution of the structural form from a CCW system to a collection of LWPs. As expected, the structures having weaker coupling beams exhibited yield at lower lateral loads. The accompanying reduction in coupling stiffness, however, mitigated this effect although the wall pier demand clearly rose with reduced coupling. In every case, however, the walls embodied sufficient overstrength to permit the overall structure to perform well. An additional aspect of this work is that the wall piers in the CCW were significantly different in terms of their dynamic and geometric properties: the moments of inertia of the two wall piers of the CCW differed by almost an order of magnitude. The different wall pier capacities affected performance and require bi-directional pushover analyses but did not result in a significant reduction in capacity as may be initially intuited.

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“…Ever since the beginning of research on the steel CBs in the 1990s, the structural behaviors of steel CBs have been investigated by experiments and theoretical analysis [1][2][3]; the research pointed out that steel CB structure has sufficient rigidity, strength, toughness, and a good seismic performance; the plastic deformation of the web after yielding helps to dissipate seismic energy, thus significantly improves the seismic performance of CBs. Nonlinear seismic response of walls coupled with steel and concrete beams was also investigated [4][5][6]; the research demonstrated the advantages of using steel beams to couple reinforced concrete walls. Experiments and simulations have been conducted on the joints of steel CBs and shear walls [7][8][9][10][11], and the results demonstrated that the anchorage has important impacts on the stiffness degradation; the shear yield style steel CB has excellent ductility performance and energy performance, construction convenient, and easy maintenance and replacement, and especially the maintenance can be easily replaced after the earthquake.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Structural Behavior of Shear Walls with Steel Truss Coupling Beams under Seismic Loading

Deng

et al. 2018

Advances in Materials Science and Engineering

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Based on existing experimental results, the finite element analyses were carried out on shear wall structures with steel truss coupling beams. is work studied the seismic behaviors and the working mechanism of the steel truss coupling beam at the ultimate state and put forward two parameters: the area ratio of web member to chord and the stiffness ratio of coupling beam to shear wall. e seismic optimum design method of the coupling beam was also proposed. Afterwards, a comparative analysis was implemented on the three-dimensional shear wall model with steel truss coupling beams designed by the proposed design method.e results show that the structures designed by the proposed method have excellent seismic behaviors, the steel truss coupling beams have enough stiffness to connect shear walls effectively, and its web members have appropriate cross sections to dissipate seismic energy.

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Seismic Response of Steel Beams Coupling Concrete Walls

Cited by 123 publications

References 5 publications

Effect of Steel and Concrete Coupling Beam on Seismic Behavior of RC Frame Accompanied with Coupled Shear Walls

Effect of Steel and Concrete Coupling Beam on Seismic Behavior of RC Frame Accompanied with Coupled Shear Walls

Design of coupled wall structures as evolving structural systems

Investigation on the Structural Behavior of Shear Walls with Steel Truss Coupling Beams under Seismic Loading

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