Strength of Footing with Punching Shear Preventers

Lee, Sang-Sup; Moon, Jiho; Park, Keum-Sung; Bae, KyuWoong

doi:10.1155/2014/474728

Cited by 10 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the experiments, however, many of the smaller cracks were either not visible to the human eye or merged together forming a larger and more localized crack. [40][41][42][43] 0.1 [44] 1.16 [44] 2/3 [44] 10 −4 [44] In summary, the FEM ultimate loads and crack patterns show close correlation to the experimental observations. The modelling techniques adopted to simulate the wall panels are thus proven to be satisfactory, which can be used for validation of current test results.…”

Section: Fe-model Validationmentioning

confidence: 76%

“…Background details of these parameters can be found in the ABAQUS user's manual [44] and in the literature. [40][41][42][43] The tensile fracture and compressive plastic behaviour are completed by specifying the evolution laws of damage, which represents the stiffness degradation. The compression damage, d c , and the tension damage, d t , were calculated by the equations below after the peak stress [45] :…”

Section: Materials Properties and Constitutive Models 411 | Concretementioning

confidence: 99%

See 1 more Smart Citation

Experimental and numerical investigations of axially loaded RC walls restrained on three sides

Doh

2018

Structural Design Tall Build

View full text Add to dashboard Cite

Axially loaded reinforced concrete (RC) walls in tilt-up structures can be supported top and bottom only by floors or roof structures. However, RC walls are often combined to form I-, C-, T-, and L-shapes to make efficient use of the building area in multi-storey buildings. With these configurations, walls may also be laterally supported on either or both sides by interconnecting walls. While many researchers have investigated the behaviours of RC walls, either in one-way action or two-way action supported on four sides with and without openings, limited research has been conducted on two-way action walls supported on three sides (TW3S). As such, this paper experimentally and numerically investigates the behaviour of TW3S walls. Details of the 12 half-scale walls tested, including experimental setup, failure loads, crack patterns, and load-deflection characteristics, are reported. In addition, the Finite Element Method using ABAQUS software for investigating the behaviour of TW3S walls is described in detail. Finally, due to the conservative nature of code design equations and there being limited available methods for predicting the ultimate load of TW3S walls with openings, a rigid-plastic approach has been proposed in this study to evaluate the failure load of TW3S walls. KEYWORDS aspect ratio, axial load, concrete walls, openings, slenderness ratio, yield line | INTRODUCTIONReinforced concrete (RC) walls have been commonly used as load-bearing elements in buildings and offshore structures. Primary applications include tilt-up precast structures, shear walls in multi-storeyed buildings, lift core walls in high-rise buildings, components in bridge construction such as webs of beams or box girders, storage cells in offshore concrete structures, and parts of floating concrete structures such as barges and pontoons. [1] In general, typical loadings on RC walls are in-plane loads, consisting of gravitational and shear forces, and out-of-plane transverse loads. In-plane vertical loads are frequently eccentric, causing a pronounced out-of-plane curvature owing to a range of loading conditions including corbel elements applied to the wall face, imperfections in construction, uneven loading being experienced on top of the wall, and temporary loading during operation and/or maintenance. [2] Walls can be constructed with various support conditions. Walls restrained top and bottom only by floor plates, with free vertical edges, are usually encountered in tilt-up concrete structures. Such walls behave in one-way (OW) action depicted by uniaxial curvature in the direction of loading, as shown in Figure 1(a). In practice, walls behaving in two-way action supported on three sides (TW3S) and supported on four sides (TW4S), provided by floor plates and stiffening walls, or other sufficiently stiff members, are usually encountered in monolithic concrete structures, particularly in core walls of tall buildings. These panels generally deform along both the horizontal and vertical directions, as outlined in Figure 1(b-c). As a resul...

show abstract

Section: Fe-model Validationmentioning

confidence: 76%

Section: Materials Properties and Constitutive Models 411 | Concretementioning

confidence: 99%

Experimental and numerical investigations of axially loaded RC walls restrained on three sides

Doh

2018

Structural Design Tall Build

View full text Add to dashboard Cite

show abstract

“…Table 6 compares the failure loads predicted by Eq. (12), using the derived k1 and k2, with available experimental results [3,16,18] (the details of which can be found in Tables 1(a) and (b)). Given that the EC2 equation can be used to predict the ultimate capacity of TW3S walls with openings, the failure loads predicted by Eq.…”

Section: The Performance and Limitations Of The Proposed Equationmentioning

confidence: 99%

“…Compared to the extensive literature on axially-loaded OW and TW4S walls with openings, 11 only a small number of experiments [3,[16][17][18] have been performed on the axial load capacity 12 of walls with openings under two-way action supported on three sides (TW3S). There is therefore insufficient data to draw quantitative conclusions about, and to derive design models for, the axial load capacity of TW3S walls with openings.…”

Section: Introductionmentioning

confidence: 99%

Prediction of axial load capacity of concrete walls with openings restrained on three sides

Doh

Fragomeni

et al. 2020

Structures

View full text Add to dashboard Cite

Currently, the empirical wall design equations given in major codes of practices either offer no guidelines or provide overly conservative predictions of the ultimate axial strength of concrete walls with openings restrained on three sides (TW3S walls with openings). In view of the significant shortcomings, an appropriate design equation is required for such walls. This paper presents a numerical investigation on the behaviour of TW3S walls with openings under eccentric axial loading. A finite element model using the ABAQUS software was employed to undertake parametric studies examining the influence of opening parameters, which consisted of configuration and location, on the axial load capacity of TW3S walls. In total, 101 models were developed and analysed. Having established the relationships between the opening parameters and the ultimate load capacity of TW3S walls, a more encompassing design 2 equation was derived. The reliability of the proposed equation was ascertained through comparisons with available test data.

show abstract

“…al. (2014) [9] used nonlinear finite element (FE) analysis to study the punching failure behavior of the footing. Series of experimental tests were performed by inserting steel funnel shaped to act as punching preventer (Punching Shear Preventers, PSP).…”

Section: Introductionmentioning

confidence: 99%

Prediction of Punching Strength of Reinforced Concrete Footings by Finite Element Method

Ahmed¹,

Hamad²,

Rashied³

2017

AJCEA

View full text Add to dashboard Cite

This paper presents a nonlinear finite element modeling and analysis of the punching behaviour of reinforced concrete footings. The foundation system was modeled using ANSYS software. Several experimental tests were collected from literature to support the software outputs. The deflection in the footing's concrete has been studied, marking the cracking patterns under column, and computing the failure loads for each footing. The experiments results were compared with the finite element results obtained from the modeled footing. The results indicated that the punching behaviour obtained from the analytical model using ANSYS software give good agreement with the experimental data with conservative difference of about 10 percent. Also, results of column`s punching shear capacity, using a number of codes of practice, were presented in this paper and compared with both experimental and the finite element results.

show abstract

Strength of Footing with Punching Shear Preventers

Cited by 10 publications

References 13 publications

Experimental and numerical investigations of axially loaded RC walls restrained on three sides

Experimental and numerical investigations of axially loaded RC walls restrained on three sides

Prediction of axial load capacity of concrete walls with openings restrained on three sides

Prediction of Punching Strength of Reinforced Concrete Footings by Finite Element Method

Contact Info

Product

Resources

About