Flexural Bearing Capacity Research of Composite Beams with Edge Constraint Component

2013 ◽  
Vol 639-640 ◽  
pp. 807-811
Author(s):  
Yang Wang ◽  
Tian Li
Keyword(s):  
Bearing Capacity ◽  
Steel Structure ◽  
Composite Beams ◽  
Deformation And Failure ◽  
Finite Element Software ◽  
Composite Frame ◽  
Negative Moment ◽  
Flexural Bearing Capacity ◽  
Simulation Results ◽  
Current Code

To investigate the flexural bearing capacity in negative moment region of composite beams，we examined different ends constraint components. The modeling of the beam ends connected framework has been done by the finite element software ANSYS. The concrete thickness, slab reinforcement ratio and different component at the edge of the composite framework in the negative moment region are taken into account. The performance during the process of deformation and failure are got by nonlinear analysis. The flexural bearing capacity was reported, with the negative moment region of the composite frame beam, it revealed great differences when the beams are different component. Simulation results show that the concrete thickness take the biggest influence on bearing capacity. The results showed the behaviors of the composite frame beams are different with positive moment region, and calculation based on current code for design of steel structure (GB50017-2003) would be a big deviation.

Research on Rigidity of Circular Tubular ZYY-Joint in Single Fold Surface of Multi-Planar Steel Structure of 26th Universaide Shenzhen 2011

2011 ◽  
Vol 255-260 ◽  
pp. 421-427
Author(s):  
Wen Bo Sun ◽  
Tao Hu ◽  
Wei Huang
Keyword(s):  
Numerical Analysis ◽  
Bearing Capacity ◽  
Steel Structure ◽  
Tubular Structure ◽  
Finite Element Software ◽  
Roof Structure ◽  
Stiffness Characteristic ◽  
Single Fold ◽  
Internal Forces ◽  
Tubular Joint

Due to its convenience of construction connection and simple appearance, steel tubular structure with simple joints is widely used in spatial structures. Tubular joint generally belongs to semi-rigid joint. Its different internal detail is closely related to the bearing capacity and stiffness of joints and its stiffness characteristic has some definite effects on the internal forces, deformation and bearing capacity of the steel tubular structure. In this paper, the roof structure of the main stadium of 26th Universaide Shenzhen 2011 was selected as the engineering background. This paper also studied the comparison test on different structural forms of spatial circular tubular ZYY-joints of the peaks of its steel structure by scaling down as the proportion of 1:3, and carried out a numerical analysis on these joints by finite element software ANSYS. It shows that, results of numerical analysis coincide with the experimental results and the joint with ribbed stiffener has better bearing capacity and stiffness, which can well meet the engineering needs.

Analysis of Bearing Capacity of Steel-High Strength Concrete Composite Beams

2013 ◽  
Vol 838-841 ◽  
pp. 661-664
Author(s):  
Liang Li Xiao ◽  
Ming Yang Pan ◽  
Jian Wei Han
Keyword(s):  
Bearing Capacity ◽  
High Strength Concrete ◽  
Influence Factors ◽  
High Strength ◽  
Composite Beams ◽  
Finite Element Program ◽  
Strength Concrete ◽  
Element Program ◽  
Negative Moment ◽  
Negative Bending

It is very crucial to analyze the flexural bearing capacity of the steel-high strength concrete composite beams, but the combination on the flange of steel beam and their bearing capacity is limited with certain inevitability,in addition, in the negative bending regions of continuous composite beams, with the constant increase of load, the process of the whole structure will cause damages in the negative moment region. In order to avoid this kind of damages, we must use general finite element program ANSYS to analyze thebearing capacity of the steel and high strength concrete composite beams. Besides further studying the influence factors of bearing capacity, and ensuring the safety of our engineering performance can be in favor of the engineering structure.

Solid-Gas Coupling Model and Numerical Simulation of Coal Containing Gas Based on Comsol Multiphysic

2012 ◽  
Vol 616-618 ◽  
pp. 515-520
Author(s):  
Sheng Zhou Li ◽  
Chang Bao Jiang ◽  
Jun Wei Yao ◽  
Ming Hui Li
Keyword(s):  
Numerical Simulation ◽  
Failure Modes ◽  
Coupling Effect ◽  
Coupling Model ◽  
Klinkenberg Effect ◽  
Deformation And Failure ◽  
Finite Element Software ◽  
Porosity And Permeability ◽  
Simulation Results ◽  
Seepage Law

Solid-gas coupling effect of coal containing gas is studied in order to understand the gas percolation mechanism in coal and rock. On the premise of that porosity and permeability of coal and rock are in dynamic changes and Klinkenberg effect, then seepage mechanics and elastic-plastic mechanics are considered together to established solid-gas coupling model of coal containing gas. With the given fixed solution conditions and parameters, the simulation results of mathematical model is found by the Comsol Multiphysic finite element software. Simulation results are consistent with the stress-strain law, deformation and failure modes of specimen in the experiment. Seepage law obtained in numerical simulation has same trends with experimental data. The elastoplastic solid-gas coupling model of coal containing gas can effectively describe the mechanical percolation characteristics of coal containing gas.

scholarly journals Mechanical Behavior of Hybrid Connectors for Rapid-Assembling Steel-Concrete Composite Beams

2019 ◽  
Vol 5 (10) ◽  
pp. 2081-2092
Author(s):  
Senqiang Lu ◽  
Wei Zhao ◽  
Puge Han ◽  
Zhenyuan Hang
Keyword(s):  
Mechanical Behavior ◽  
Bearing Capacity ◽  
Concrete Slab ◽  
Composite Beams ◽  
Shear Capacity ◽  
Filling Material ◽  
Shear Connectors ◽  
Finite Element Software ◽  
Mortar Strength ◽  
Circular Holes

In order to achieve a kind of shear connector suitable for rapid-assembling steel-concrete composite beams, a new type of hybrid shear connectors is proposed, in which the concrete slab with prefabricated circular holes and the steel beam with welded studs are installed and positioned, and then epoxy mortar is filled in the prefabricated hole to fix the studs. To study the mechanical behavior of these hybrid connectors, test on 18 push-out specimens with different prefabricated circular holes are carried out. ABAQUS finite element software is adopted to verify the relationship between the numerical simulation and experiment, influences of the epoxy mortar strength and prefabricated circular holes diameter are studied. The results show that filling epoxy mortar in the prefabricated hole is beneficial to improve the stiffness and bearing capacity of the specimen; the change of epoxy mortar strength has a certain impact on the bearing capacity and stiffness of the hybrid connector; In the case of the same strength of the filling material, the size of the prefabricated circular holes diameter directly affects the stiffness and bearing capacity of the shear stud. The shear capacity equations proposed by considering the epoxy mortar strength and prefabricated holes diameter, and it has a wide applicability.

Nonlinear Numerical Analysis of SRC Frame End Joint

2013 ◽  
Vol 753-755 ◽  
pp. 1151-1155
Author(s):  
Jie Kong ◽  
Yun Zou ◽  
Cheng Li ◽  
Zhi Wei Wan
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Cyclic Loading ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Experimental Results ◽  
Rc Beam ◽  
Finite Element Software ◽  
Bone Content ◽  
Simulation Results

Nonlinear numerical analysis for the stress performance of RC beam - SRC column and SRC beam - SRC column frame end joints are processed in this paper with the finite element software of ABAQUS. Compared with experimental results, simulation results are found to be reasonable. In order to study the influence of steel bone content on the frame node, two kinds of frame joints are contrastively analyzed under monotonic loading and cyclic loading. The load-displacement curves and hysteretic curves show that with the steel ratio increases, the ultimate bearing capacity improves and the seismic performance becomes better.

Ultimate Bearing Capacity of Steel-Reactive Powder Concrete Composite Beams

2014 ◽  
Vol 900 ◽  
pp. 473-482 ◽  
Author(s):  
Li Zhong Han ◽  
Jin Quan Zhang ◽  
Jian Guo Nie
Keyword(s):  
Bearing Capacity ◽  
Concrete Slab ◽  
Composite Beams ◽  
Ultimate Bearing Capacity ◽  
Reactive Powder Concrete ◽  
Width Ratio ◽  
Critical Crack ◽  
Negative Moment ◽  
Reactive Powder ◽  
Tension Strength

Concrete slab in the negative moment area of continuous steel-concrete composite beams is prone to crack due to the low tension strength of common concrete, which could result in the decreasing of the strength and durability. To solve this problem, a method of replacing the concrete slab with reactive powder concrete (RPC) slab which is of super high strength, durability, toughness and volume stabilization is presented. According to the constitutive relation and the high tension strength of RPC, the normal section failure mode is defined as the critical crack state, and the calculation formula of ultimate bearing capacity is deduced. Finally, some parameters that influence the ultimate bearing capacity are analyzed, such as the height ratio of RPC slab to whole beam, width ratio of RPC slab to steel beam, and the ratio of reinforcement of RPC slab. Compared with the steel-concrete composite beams, it is indicated that in the precondition of RPC slab unallowable crack in negative moment area, the ultimate bearing capacity of steel-RPC composite beams can still be increased, and the crack resistance, stiffness and durability can all be enhanced greatly.

Numerical Simulation on Beam-Column Joint in the Added-Layers Steel Structure under Monotonic Loading

2012 ◽  
Vol 170-173 ◽  
pp. 3460-3463
Author(s):  
Hai Jun Wang ◽  
Yong Yao ◽  
Yun Peng Chu ◽  
Dai Guo Chen
Keyword(s):  
Numerical Simulation ◽  
Plastic Deformation ◽  
Bearing Capacity ◽  
Steel Structure ◽  
Monotonic Loading ◽  
Initial Stiffness ◽  
Structural Requirements ◽  
Deformation And Failure ◽  
Structure Building ◽  
Column Joint

Add layers for low-rise steel structure building can improve its using function. Use ANSYS analyze three added-layers beam-column joints of steel structure under the Monotonic loading. The results showed that: the joint reinforced by angles belongs to semi-rigid joint. Considering the construction and Structural requirements, the performance of this type joint is the most economical of all. The three joints all experience fully elastic deformation before them destructed, although the joint with only weld is deformation and failure, and the joint reinforced by haunched slab have larger deformability to resistance the plastic deformation, ultimate bearing capacity and initial stiffness, is one of the most conservative way of the joint’s reinforcement.

Analysis on the Mechanical Properties of Connections on Cold-Formed Square Steel Column and Beam

2010 ◽  
Vol 163-167 ◽  
pp. 676-680 ◽  
Author(s):  
Yong Yao ◽  
Yun Peng Chu
Keyword(s):  
Mechanical Properties ◽  
Bearing Capacity ◽  
Ultimate Load ◽  
Plastic Hinge ◽  
Steel Structure ◽  
Initial Stiffness ◽  
Yield Load ◽  
Finite Element Software ◽  
Steel Column ◽  
Welding Joints

The profiled steel structure of cold-formed square steel tubular has better seismic behavior and is suitable for reconstruction in seismic disastrous area. The joint is the key to the design of structure, so it needs further research on the mechanical properties. Using finite element software ANSYS to analysis two kinds of welding joints which under monotonic loading, the results show that: (1)The ultimate bearing capacity and yield load of improved joints greatly enhanced compared to conventional joints, and the plastic hinge moved to outward from the beam and column interface. (2)Until loading to the yield load, the improved joints has longer yield platform and better ductility. (3)The axial compression ratio has stronger effect on the conventional joints than improved joints on bearing capacity and initial stiffness.(4)Until loading to the ultimate load, degree of stress concentration on the improved joints is less than conventional joints, and the plastic hinge moved to outward, avoid brittle fracture of the joint.

scholarly journals Analysis of Bearing Capacity of Steel-Concrete Composite Beams Considering Interface Slip Effect

2021 ◽  
Vol 719 (2) ◽  
pp. 022036
Author(s):  
Song Yang ◽  
Fan Chen ◽  
Zubin Ai ◽  
Lingyuan Zhou ◽  
Zhensheng Cao
Keyword(s):  
Bearing Capacity ◽  
Composite Beams ◽  
Slip Effect ◽  
Interface Slip

scholarly journals Flexural bearing capacity and failure mechanism of CFRP-aluminum laminate beam with double-channel cross-section

2021 ◽  
Vol 28 (1) ◽  
pp. 139-152
Author(s):  
Teng Huang ◽  
Dongdong Zhang ◽  
Yaxin Huang ◽  
Chengfei Fan ◽  
Yuan Lin ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Bearing Capacity ◽  
Failure Mechanism ◽  
Cross Section ◽  
Failure Criterion ◽  
Failure Modes ◽  
Channel Cross Section ◽  
Fiber Layer ◽  
Flexural Bearing Capacity ◽  
Double Channel

Abstract In this study, the flexural bearing capacity and failure mechanism of carbon fiber-reinforced aluminum laminate (CARALL) beams with a double-channel cross-section and a 3/2 laminated configuration were experimentally and numerically studied. Two types of specimens using different carbon fiber layup configurations ([0°/90°/0°]3 and [45°/0°/−45°]3) were fabricated using the pressure molding thermal curing forming process. The double-channel CARALL beams were subjected to static three-point bending tests to determine their failure behaviors in terms of ultimate bearing capacity and failure modes. Owing to the shortcomings of the two-dimensional Hashin failure criterion, the user-defined FORTRAN subroutine VUMAT suitable for the ABAQUS/Explicit solver and an analysis algorithm were established to obtain a progressive damage prediction of the CFRP layer using the three-dimensional Hashin failure criterion. Various failure behaviors and mechanisms of the CARALL beams were numerically analyzed. The results indicated that the numerical simulation was consistent with the experimental results for the ultimate bearing capacity and final failure modes, and the failure process of the double-channel CARALL beams could be revealed. The ultimate failure modes of both types of double-channel CARALL beams were local buckling deformation at the intersection of the upper flange and web near the concentrated loading position, which was mainly caused by the delamination failure among different unidirectional plates, tension and compression failure of the matrix, and shear failure of the fiber layers. The ability of each fiber layer to resist damage decreased in the order of 90° fiber layer > 0° fiber layer > 45° fiber layer. Thus, it is suggested that 90°, 0°, and 45° fiber layers should be stacked for double-channel CARALL beams.

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