Response of shear critical reinforced concrete frames and walls under monotonic loading

Hippola, H. M. S. S.; Wijesundara, K. K.; Nascimbene, Roberto

doi:10.1016/j.engstruct.2021.113483

Cited by 14 publications

(9 citation statements)

References 21 publications

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“…Table 2 shows the used properties in FEM for steel and concrete. Because of the presence of nets and their complexity, a three-dimension three-node Tet (C3D4) element was used [27,28]. Because it is stiffer than the other elements.…”

Section: Numerical Simulationmentioning

confidence: 99%

Evaluating the Performance of Hollow Core Slabs (HCS)-Concrete and Simplifying Their Implementation

Mahboob¹,

Hassanshahi²,

Hakimi³

et al. 2023

Recent Prog Mater

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The largest proportion of the material used in multistory buildings, and thus its carbon impact, is attributed to their slabs being the main contributor of weight. Because of their high strength and concrete self-weight reduction, composite beams with hollow-core slabs were created for their technical and economic benefits, making this system inexpensive and with a reduced environmental impact, thereby lowering carbon emissions. Geometrically, the hollow slab has a sequence of T and L form pieces on both sides. Hollow slabs are a newer roof feature with a little study undertaken in mechanical characteristics that prove its benefits and downsides in construction. It also has sufficient rigidity. In this work, numerous 19 hollow slabs and flat slabs are modeled using the finite element method, and the findings are compared in terms of hollow slab behavior and economic cost. It demonstrates that reducing the concrete beneath the hollow slab promotes cost-efficiency and the effective use of concrete and steel resources and various approaches for this form of the hollow slab are provided. Implementing a modern double-side beam slab is possible using the presented methods in this paper. It opens a door for creating structures with high stiffness and strength versus vertical and lateral load, along with low material volume.

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Section: Numerical Simulationmentioning

confidence: 99%

Evaluating the Performance of Hollow Core Slabs (HCS)-Concrete and Simplifying Their Implementation

Mahboob¹,

Hassanshahi²,

Hakimi³

et al. 2023

Recent Prog Mater

View full text Add to dashboard Cite

show abstract

“…A large number of researches have been exerted to investigate the mechanical performances of frame and shear wall structures. [1][2][3][4][5] It was found that numerical simulation model fulfilled the reinforced concrete frame building's dynamic respond performance after an earthquake attack, 1 and connections was one of the vulnerable factors for the precast buildings in the seismic regions. 2 In addition, the dowel connections were characterized by an overstrength and was proposed to update the relevant Italian design guidelines.…”

Section: Introductionmentioning

confidence: 96%

“…3 Through introducing a forcebased finite element method, it was found that the numerical method was feasible to predict the mechanical behaviors, including bearing capacity, failure modes and distribution of internal forces, of frame and wall structures correctly. 4 Based on the shake-table test of a reinforced precast concrete wall-slab-wall structure, it was found that the building mock-up collapsed because of the failure of steel connectors used to join the longitudinal and transverse walls. 5 As boasts of free room layout and rich building facade, the precast concrete frame structure is used widely in different kinds of buildings, that is, public buildings, residual buildings and industrial buildings.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays the precast concrete structures mainly include the frame structure and the shear wall structure. A large number of researches have been exerted to investigate the mechanical performances of frame and shear wall structures 1–5 . It was found that numerical simulation model fulfilled the reinforced concrete frame building's dynamic respond performance after an earthquake attack, 1 and connections was one of the vulnerable factors for the precast buildings in the seismic regions 2 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation on seismic performance of the post‐fire precast concrete column with grouted sleeve connections

Liu

Xiao

2023

Structural Concrete

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A simulation method with Abaqus software was adopted to analyze the seismic performance of post-fire precast concrete column with grouted sleeve connections. First, the simulation was exerted on the column at ambient temperature and the grouted sleeve connection was simplified to be a single steel rebar. It is found that the yield load, lateral peak load and ductility coefficient from the simulation result are about 0.89, 0.85, and 1.02 times of those from the test respectively, which shows that the built finite element model is fit for the simulation analysis of precast concrete column and the simplified method of grouted sleeve connection is feasible. Then, a sequential coupling method was used to simulate the seismic performance of cast-in-place column after exposure to elevated temperatures. It is found that the highest temperature, load and ductility coefficient from simulation agree well with those of test, as the maximum difference is only 5.0%. Furthermore, simulations of post-fire precast concrete columns with grouted sleeve connections were based on these practices and the findings as follows: as the elevating time becomes longer, the maximum difference of the highest temperature between the simulation and the theory decreases from 6.7% to 0.6%; compared to the condition at ambient temperature, the lateral peak load decreases linearly along with the elevating time ascending. Finally, a new expression was proposed to calculate the shear bearing capacity of post-fire precast concrete column with grouted sleeve connections, which will be beneficial to the fire safety design of precast concrete structures.

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“…Due to the numerical instabilities of this original approach, Bentz 12 introduced the longitudinal stiffness method to update the shear strain profile and developed the analytical software Response-2000 15 for the analysis of beam cross-sections and statically determinate beams. Apart from the analytical approaches, similar sectional analysis algorithms based on smeared crack approaches have been implemented in several displacement-based (DB), [16][17][18][19][20][21] force-based (FB), [22][23][24][25][26][27] and mixed [28][29][30] fiber element formulations developed over the past three decades. In addition to the fiber element formulations, DB plane stress element (DB-PSE) formulations have been developed employing the MCFT and the DSFM as the constitutive models, 31 whereas DB solid element (DB-SE) formulations have been developed employing the TSM 32 and the concrete damage plasticity model.…”

Section: Introductionmentioning

confidence: 99%

Effects of sectional kinematic constraints in fiber element formulations on the load‐deformation response of reinforced concrete elements

Lamawansa

Hippola

Wijesundara

2022

Structural Concrete

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Developing numerical tools for reinforced concrete elements accounting for the axial-flexure-shear interaction is important as their brittle failures may lead to a complete collapse of structures. Among the different numerical tools available, fiber element formulations are enforced with kinematic constraints for the sectional strain fields. This study aims to investigate the impact of such kinematic constraints in fiber element formulations towards the response of reinforced concrete elements. A series of beams selected from literature was analyzed using available numerical tools, and the global and local responses were compared. In the postcracking branch, the fiber element formulations result in an underestimation of the shear strain distribution in the tensile zone which leads to an overprediction of the postcracking stiffness. In addition, the load carrying capacity and failure mode predictions of the fiber element formulations were proved to be accurate despite the underestimation of shear strains in the tensile zone.

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Response of shear critical reinforced concrete frames and walls under monotonic loading

Cited by 14 publications

References 21 publications

Evaluating the Performance of Hollow Core Slabs (HCS)-Concrete and Simplifying Their Implementation

Evaluating the Performance of Hollow Core Slabs (HCS)-Concrete and Simplifying Their Implementation

Simulation on seismic performance of the post‐fire precast concrete column with grouted sleeve connections

Effects of sectional kinematic constraints in fiber element formulations on the load‐deformation response of reinforced concrete elements

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