Analysis of design method shear strength of RC short corbels

2011 ◽  
Author(s):  
Lin Zhao ◽  
Huaxin Liu
Keyword(s):  
Shear Strength ◽  
Design Method

scholarly journals The improved design method of shear strength of reinforced concrete beams without transverse reinforcement

2017 ◽  
Vol 12 (2) ◽  
pp. 39-45 ◽  
Author(s):  
Pavlo Vegera ◽  
Rostyslav Vashkevych ◽  
Roman Khmil ◽  
Zinoviy Blikharskyy
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Design Method ◽  
Variable Parameter ◽  
Reinforced Concrete Beams ◽  
Shear Span ◽  
Depth Ratio ◽  
Effective Depth ◽  
Improved Design

Abstract In this article, results of experimental testing of reinforced concrete beams without transverse shear reinforcement are given. Three prototypes for improved testing methods were tested. The testing variable parameter was the shear span to the effective depth ratio. In the result of the tests we noticed that bearing capacity of RC beams is increased with the decreasing shear span to the effective depth ratio. The design method according to current codes was applied to test samples and it showed a significant discrepancy results. Than we proposed the improved design method using the adjusted value of shear strength of concrete CRd,c. The results obtained by the improved design method showed satisfactory reproducibility.

scholarly journals Flexural and Shear Performance of Prestressed Composite Slabs with Inverted Multi-Ribs

2019 ◽  
Vol 9 (22) ◽  
pp. 4946 ◽  
Author(s):  
Sun-Jin Han ◽  
Jae-Hoon Jeong ◽  
Hyo-Eun Joo ◽  
Seung-Ho Choi ◽  
Seokdong Choi ◽  
...  
Keyword(s):  
Shear Strength ◽  
Design Method ◽  
Precast Concrete ◽  
Flexural Behavior ◽  
Structural Performance ◽  
Design Codes ◽  
Analysis Model ◽  
Non Linear ◽  
Shear Performance ◽  
Flexural Analysis

Half precast concrete slabs with inverted multi-ribs (Joint Advanced Slab, JAS), which enhance composite performance between slabs by introducing shear keys at connections between the slabs and improve structural performance by placing prestressing tendons and truss-type shear reinforcements, have recently been developed and applied in many construction fields. In this study, flexural and shear tests were performed to verify the structural performance of JAS members. Towards this end, two flexural specimens and four shear specimens were fabricated, and the presence of cast-in-place concrete and the location of the critical section were set as the main test variables. In addition, the flexural and shear performance of the JAS was quantitatively evaluated using a non-linear flexural analysis model and current structural design codes. Evaluation results confirmed that the flexural behavior of the JAS was almost similar to the behavior simulated through the non-linear flexural analysis model, and the shear performance of the JAS can also be estimated appropriately by using the shear strength equations presented in the current design codes. For the JAS with cast-in-place concrete, however, the shear strength estimation results differed significantly depending on the way that the shear contributions of the precast concrete unit and cast-in-place concrete were calculated. Based on the analysis results, this study proposed a design method that can reasonably estimate the shear strength of the composite JAS.

Experimental study on mechanical behavior of combined joint using adhesives and high strength bolts

2021 ◽  
Author(s):  
Takuya Kamino ◽  
Takashi Fujimoto ◽  
Takashi Yamaguchi ◽  
Yasumoto Aoki ◽  
Shinsuke Akamatsu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Design Method ◽  
High Strength ◽  
Corrosion Damage ◽  
Epoxy Adhesive ◽  
Steel Bridge ◽  
Slip Coefficient ◽  
Constraint Effect ◽  
Slip Resistance

<p>As a repair for corrosion damage of a steel bridge, a patch plate-repair using high strength bolts is generally applied. This method requires the surface of the damaged corroded part filled with an epoxy adhesive flat. The load transferring mechanism and slip resistance of such a combined joint with adhesives and high strength frictional bolts aren't clear. Since the shear strength of an adhesive might be increased due to constraint by the bolt axial force, the combined joint's slip resistance would be increased. To clarify the mechanical properties of the combined joint and to propose a new design method for such joints, two experiments have been conducted. The first was a frictional force experiment for adhesive specimens subjected to contact pressure on the surface to evaluate the constraint effect of adhesive on shear strength quantitatively. The last one is a slippage experiment for the combined joints to evaluate its slip coefficient.</p>

scholarly journals Soil Probabilistic Slope Stability Analysis Using Stochastic Finite Difference Method

2017 ◽  
Vol 11 (4) ◽  
pp. 23 ◽  
Author(s):  
Mohamadbagher Effati Daryani ◽  
Hadi Bahadori ◽  
Khalil Effati Daryani
Keyword(s):  
Shear Strength ◽  
Stability Analysis ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Slope Stability ◽  
Difference Method ◽  
Slope Failure ◽  
Design Method ◽  
Limit State ◽  
Partial Factor

The paper contrasts results obtained by the partially factored limit state design method and a more advanced Random Finite Difference Method (RFDM) in a benchmark problem of slope stability analysis with variable undrained shear strength. Local Average Subdivision method was used to simulate the non-Gaussian random variables. The key difference between the methods is that RFDM takes into account spatial variability of soil parameters allowing slope failure to occur naturally along the path of least resistance. The probabilistic method leads to predictions of the "probability of slope failure" as opposed to the more traditional "factor of safety" measure of slope safety in the limit state design method; however, they give significant different results depending on the level of the variability. Analyses conducted using Monte Carlo Simulation show that the same partial factor can have very different levels of risk depending on the degree of uncertainty of the mean value of the soil shear strength. Calibration studies show the partial factor necessary to achieve target probability values.

Failure Probabilities of Reinforced Concrete Square Pile Caps

2007 ◽  
Vol 23 (2) ◽  
pp. 173-180
Author(s):  
W.-Y. Lu
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Design Method ◽  
Main Body ◽  
Concrete Pile ◽  
Diagonal Compression ◽  
Pile Cap ◽  
Pile Caps ◽  
Strut And Tie Model ◽  
Failure Probabilities

AbstractAn analytical model for determining the shear strength of concrete pile caps under the failure mode of diagonal-compression originally based on the softened strut-and-tie model is proposed. The failure probabilities of reinforced concrete pile caps are investigated by Monte Carlo method. The results indicate that the proposed model can accurately predict the shear strength of the pile caps. The distribution of the failure probabilities for pile caps designed to ACI 318-02 Appendix A and the proposed design method are more uniform than that designed to the ACI 318-99. The ACI 318-99 is very conservative and cannot provide a consistent safety for pile caps design. It is suggested that the procedures in the ACI 318-02 Appendix A should be moved to the main body of ACI 318-02 and the proposed design method should be incorporated into the current reinforced concrete pile cap design methods.

scholarly journals Establishment of a Shear Strength Prediction Model for Asphalt Mixtures with Raw Materials Properties and Design Parameters

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Bangwei Wu ◽  
Xing Wu ◽  
Liping Liu ◽  
Peng Xiao
Keyword(s):  
Shear Strength ◽  
Prediction Model ◽  
Raw Materials ◽  
Design Method ◽  
Asphalt Mixtures ◽  
Design Parameters ◽  
Strength Prediction ◽  
Factors Affecting ◽  
Gyratory Compaction ◽  
Asphalt Content

Shear strength is one of the important mechanical properties of asphalt mixtures, which is affected by a combination of various parameters such as asphalt property, gradation, and asphalt content, so it often requires a large number of tests to obtain a satisfactory asphalt mix design result. Thus, a shear strength prediction model considering the effects of various factors is proposed to guide the design of asphalt mixes. Firstly, on the foundation of analyzing the factors affecting the shear strength of asphalt mixtures, composed bulk specific gravity of mineral materials, aggregate surface energy, nonrecoverable creep compliance Jnr3.2, gradation index, aggregate specific surface area, asphalt content, and gyratory compaction number were selected as the input parameters for modeling. Secondly, the effects of modeling parameters on shear strength were analyzed, and an appropriate model was established using the software Origin with 101 sets of test results. In the end, the prediction model was verified using extra 18 sets of test data. The result showed that the correlation coefficient between the predicted and measured value reached 0.8 or more, indicating that the model has satisfactory prediction accuracy. This prediction model proposed in this article can be used to reduce the workload for designing asphalt mixtures and promote the establishment of the performance-based design method of asphalt mixtures.

Comparative analysis and design method of shear strength for hybrid SPR-SDS joints in thin-walled steel structures

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 4313-4329
Author(s):  
Zhiqiang Xie ◽  
Wenying Zhang ◽  
Tian Chen ◽  
Daxing Zhou ◽  
Leilei Shi ◽  
...  
Keyword(s):  
Shear Strength ◽  
Comparative Analysis ◽  
Design Method ◽  
Steel Structures ◽  
Analysis And Design ◽  
Thin Walled

Punching Shear Design Method of Voided Slabs

2017 ◽  
Vol 754 ◽  
pp. 333-336
Author(s):  
Joo Hong Chung ◽  
Hyun Ki Choi ◽  
Chang Sik Choi ◽  
Hyung Suk Jung
Keyword(s):  
Finite Element Analysis ◽  
Shear Strength ◽  
Design Method ◽  
Fe Analysis ◽  
Punching Shear ◽  
Test Results ◽  
Sectional Area ◽  
Element Analysis ◽  
Cross Sectional ◽  
Shear Design

This study presents punching shear design method of voided slab in accordance with arrangement of voids around columns. According to previous studies, the slab-column connection of voided slabs is weaker than that of the solid slab due to the lack of cross-sectional area of concrete by voids. In this study, it is assumed that the arrangement of voids exert influence on the punching shear strength of voided slabs. To verify the assumption, finite element analysis was conducted related with previous test results. The variable of FE analysis was a distance between voids and column face. Based on FE analysis and test results including previous studies, punching shear design method is suggested which can consider the arrangement of voids around columns. The suggested design method is based on the punching shear design method in ACI-318. As a result, it can predict the punching shear strength of voided slabs according to arrangement of voids around column.

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