Finite element analysis of RC moment-resisting frames to assess effective slab width; a parametric study

khalili, Ali; Nateghi-Alahi, Fariborz

doi:10.1016/j.istruc.2023.105113

Cited by 2 publications

(1 citation statement)

References 43 publications

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“…When considering the influence of size effect on the tensile strength, the analysis was divided into two cases with fixed aspect ratios as well as variable aspect ratios. It was indicated that in the case of fixed aspect ratios, the tensile strength decreased with increasing size [31][32][33][34]. This result can only be analyzed through experimental tests, while the effect of varying the length-height ratio on the measured tensile strength can be determined via theoretical analysis.…”

Section: Effect Of Length-to-height Ratio Of Rectangular Test Blocks ...mentioning

confidence: 99%

Theoretical Investigation on Indirect Tensile Strength of Concrete with Rectangular Cross-Section under Locally Distributed Load

Wang,

Xu,

Sun

et al. 2023

Materials

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The indirect tensile test plays a crucial role in experimental investigations of brittle material properties. In this study, a mechanical analysis model of the rectangular test block is established based on the theory of elastic mechanics for the characteristics of the indirect tensile test. The theoretical solution of the triangular series is derived for the rectangular test block under the locally distributed load. The finite element simulation results and splitting test results were compared with the theoretical results. The results of the study verify the accuracy of the theoretical solutions. Based on the proposed analytical solution, the effects of loading width and length-to-height ratio (h/l) of local loading on the measured tensile strength of test block are discussed. The results demonstrate that the tensile strength of the test block increases as the loading width expands, and the rate of growth in the recorded tensile strength gradually stabilizes. The variation in loading width affects the location of crack initiation points during the concrete test block splitting tests. When the loading width exceeds 6% of the side length of test block, the cracking point is positioned at the center of test block, ensuring the effectiveness of the splitting test. As the length-to-height ratio of the test block increases, there is a general upward trend in the measured tensile strength. When h/l < 0.6, the measured tensile strength initially increases before decreasing. However, when h/l > 0.6, the measured tensile strength consistently increases, with the rate of increase gradually diminishing until it stabilizes. The length-to-height ratio also significantly influences the location of the cracking point in the test block. As the length-to-height ratio increases, the cracking point initially shifts from around the center to the central point and then further from the center toward the edge. To ensure that the location of the crack initiation point is in the center of the specimen and that the tensile strength is close to the measured result, the length to height ratio can be chosen at around 0.85.

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Section: Effect Of Length-to-height Ratio Of Rectangular Test Blocks ...mentioning

confidence: 99%

Theoretical Investigation on Indirect Tensile Strength of Concrete with Rectangular Cross-Section under Locally Distributed Load

Wang,

Xu,

Sun

et al. 2023

Materials

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Determination of Shear Strength Parameters of Concrete Materials Based on the Rectangular Section Splitting Method

Yue,

Wang,

Jiang

et al. 2024

Materials

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This paper introduces an alternative method for determining the shear strength parameters of concrete materials, specifically the rectangular section splitting method, to ascertain the shear strength parameters of concrete materials. Based on the Mohr–Coulomb failure criterion, formulas for calculating the cohesion (c) and the angle of internal friction (φ) of concrete materials are derived. Numerical simulation is employed to fit and solve for the coefficients involved in the formulas. Subsequently, the concrete rectangular section splitting method and direct shear tests are utilized to verify the derived formulas. The results indicate that there is a certain feasibility to the shear strength parameters obtained for concrete materials through the rectangular section splitting method. The cohesion (c) differs by approximately 3.65%, and the angle of internal friction (φ) differs by about 6.94% when compared to the shear strength parameters obtained through direct shear tests. This suggests that the rectangular section splitting method provides a viable approach for determining the shear strength parameters of concrete materials.

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Finite element analysis of RC moment-resisting frames to assess effective slab width; a parametric study

Cited by 2 publications

References 43 publications

Theoretical Investigation on Indirect Tensile Strength of Concrete with Rectangular Cross-Section under Locally Distributed Load

Theoretical Investigation on Indirect Tensile Strength of Concrete with Rectangular Cross-Section under Locally Distributed Load

Determination of Shear Strength Parameters of Concrete Materials Based on the Rectangular Section Splitting Method

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