Strut-and-Tie Model for shear capacity of squat shear walls

2016 ◽  
pp. 377-381
Author(s):  
J Mun ◽  
W Kim ◽  
K Yang
Keyword(s):  
Shear Walls ◽  
Shear Capacity ◽  
Strut And Tie ◽  
Strut And Tie Model

scholarly journals Shear Strengthening of Deep T-Section RC Beams with CFRP Bars

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6103
Author(s):  
Zheng-Nan Jing ◽  
Rong-Gui Liu ◽  
Gui-Hua Xie ◽  
Dan Liu
Keyword(s):  
Design Theory ◽  
Experimental Tests ◽  
Economic Benefits ◽  
Shear Capacity ◽  
Shear Strengthening ◽  
Engineering Structures ◽  
Near Surface ◽  
Strut And Tie ◽  
Beam Design ◽  
Strut And Tie Model

Deep T-section beams have been widely used in engineering structures due to their high bearing capacity, high construction efficiency and economic benefits, while the current beam design theory can hardly interpret reasonably the mechanical behaviors of deep beams. The performance features of the deep T-beam were investigated, involving in strain distribution and principal stress trace using experimental tests. Different near surface mounted (NSM) reinforcement schemes were proposed for deep T-beams aiming at improving the shear capacity. The results show that the behaviors of deep T-beams dissatisfy the assumption of plane cross-section, and the ‘strut-and-tie’ model is applicable in such structures. The reinforcement systems can significantly relieve the strain concentration, mid-span deflection and crack width in deep T-beams, consequently improving the shear capacity range from 45 to 65%. The scheme is preferential for the reinforcement of deep T-beams when the applied angles, positions and lengths of CFRP bars are optimized based on the ‘strut-and-tie’ model.

Load capacity of squat RC shear walls by strut-and-tie model

2016 ◽  
Vol 68 (24) ◽  
pp. 1265-1277 ◽  
Author(s):  
Ju-Hyun Mun ◽  
Keun-Hyeok Yang
Keyword(s):  
Load Capacity ◽  
Shear Walls ◽  
Strut And Tie ◽  
Strut And Tie Model

scholarly journals Shear Strength Prediction for SFRC Shear Wall with CFST Columns by Softened Strut and Tie Model

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Peibo You ◽  
Shuaiqi Song ◽  
Haiyang Zhang ◽  
Lijuan Zhang ◽  
Ke Shi ◽  
...  
Keyword(s):  
Shear Strength ◽  
Steel Fiber ◽  
Shear Walls ◽  
Shear Wall ◽  
Fiber Reinforced Concrete ◽  
Strength Analysis ◽  
Steel Fiber Reinforced Concrete ◽  
Strut And Tie ◽  
Cfst Columns ◽  
Strut And Tie Model

The steel fiber reinforced concrete (SFRC) shear wall with concrete filled steel tube (CFST) columns is an innovative composite structure. In order to calculate the shear strength of SFRC shear wall with CFST columns, the softened strut and tie model (SSTM) of SFRC shear wall with CFST columns was proposed based on the analysis of shear mechanism of SFRC shear wall with CFST columns. The SSTM was composed of diagonal, horizontal, and vertical mechanisms, in which the contributions of concrete, reinforcement, and steel fiber to the shear strength of SFRC web of shear wall were identified. The shear capacities of 24 shear walls were calculated and compared with the available test results, and reasonable agreement was obtained. The results also showed that the steel fibers distributed randomly in concrete could be treated as longitudinal and transverse reinforcement in the shear strength analysis of SFRC web, and the SSTM was reasonable and useful to analyze and predict the shear strength of SFRC shear wall with CFST columns.

scholarly journals Reinforced Concrete Corbel’s Behavior using Strut and Tie Model

2018 ◽  
Vol 4 (2) ◽  
pp. 97 ◽  
Author(s):  
Mutmainnah Rahman Putri ◽  
Djoko Sulistyo ◽  
Andreas Triwiyono
Keyword(s):  
Reinforced Concrete ◽  
Conventional Method ◽  
Shear Capacity ◽  
Public Works ◽  
Axial Loads ◽  
Strut And Tie ◽  
Compressive Strength Of Concrete ◽  
Monotonic Loads ◽  
Group 2 ◽  
Strut And Tie Model

Reinforced concrete (RC) corbel is one of a disturbed region of elements of the structure. SNI 2847: 2013 as a guideline from Ministry of Public Works provides the design of RC corbels by the conventional method and with Strut and Tie Model (STM). The aim of this study is to determine and compare the behaviors of corbels experimentally that designed with both methods. The testing was conducted on two series of specimens and each series consisted of two specimens. Group 1 was designed using conventional method while group 2 designed using Strut and Tie Model. The axial column was tested under 50 kN fixed axial loads and corbels was tested under monotonic loads gradually increased up to failure. The results showed that with the provided steel and compressive strength of concrete, the shear capacity using the conventional method by analysis and experimental respectively were 363.164 kN and 345.7 kN, while the shear capacity using Strut and Tie Model by analysis and experimental respectively were 306.953 kN and 299.35 kN. The shear capacity of specimens using conventional method was 13.40 % greater than by using Strut and Tie Model and the shear capacity for each conventional and STM method were 1.9232 and 1.6653 greater than designated load.

Shear-bearing capacity analysis under static force for shear key of the reinforced concrete open-web sandwich slab applied to long-span structure

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yu hui Fan ◽  
Pan pan Liu ◽  
Bo Shen ◽  
Kejian Ma ◽  
Bang Wu ◽  
...  
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Shear Capacity ◽  
Content Type ◽  
Benchmark Model ◽  
Shear Key ◽  
Strut And Tie ◽  
Long Span ◽  
Shear Bearing Capacity ◽  
Strut And Tie Model

PurposeThe reinforced concrete open-web sandwich slab is composed of upper rib, lower rib, surface plate and shear key and was applied to long-span structure crossing at 18–30 m. The shear-bearing capacity of shear key, having vital effects on the slab’s bearing capacity, is analysed to present its calculation formula used for the engineering application of the slab.Design/methodology/approachThe shear-bearing capacity of shear key is analysed by the strut-and-tie model and the benchmark model established by the finite element method. Furthermore, the design formula of its shear capacity is given by the parametric analysis of FEM to adjust the result of the strut-and-tie model, using multivariate linear regression analysis of these parameters.FindingsThe calculation result of the benchmark model is compared with those of the strut-and-tie model and the standard formula, which indicates that the result of the strut-and-tie model is closer to that of the benchmark model than that of the standard formula. Moreover, the parametric analysis of the finite element model indicates that the volume–stirrup ratio of the shear key and the compression strength of the concrete have lesser effect on the shear capacity compared with the longitudinal reinforcement ratio and the shear-to-span ratio of the shear key and the relative section height of the rib.Originality/valueThe shear capacity of the shear key is provided in the paper by combining the finite element method and the strut-and-tie model, which is different from the calculation of the shear key in local codes and Chinese code, based on the theory of short corbel and the experiment of member. Furthermore, the formula of the shear capacity could be employed in the design and construction of the RC open-web sandwich slab, mainly used in the public and industrial multi-story building with long span to save the dwindling land resource currently.

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