Theoretical analysis and test verification of pull-out forces in shear connectors of composite beam under negative bending moment

2019 ◽  
Vol 198 (1) ◽  
pp. 61-72
Author(s):  
Wenyuan Liao ◽  
Longqi Li ◽  
Dewen Liu
Keyword(s):  
Theoretical Analysis ◽  
Composite Beam ◽  
Bending Moment ◽  
Shear Connectors ◽  
Pull Out ◽  
Negative Bending ◽  
Test Verification

Research on Key Issues in Design of Outer-Plated Steel-Concrete Continuous Composite Beams

2012 ◽  
Vol 166-169 ◽  
pp. 414-419
Author(s):  
Li Hua Chen ◽  
Fei Xiao ◽  
Qi Liang Jin
Keyword(s):  
Composite Beam ◽  
Bending Moment ◽  
Longitudinal Shear ◽  
Structural Features ◽  
Composite Beams ◽  
Steel Beam ◽  
Negative Moment ◽  
Key Issues ◽  
Negative Bending ◽  
The Moment

Based on the theoretical analysis and testing results, some key issues in design of outer-plated steel-concrete continuous composite beams are discussed. The influence of the form of steel beam upper flange on the behavior of composite beam is analyzed. The requirements about longitudinal reinforcement strength in the concrete flange of the negative moment region are given. It is suggested that the moment-shear interaction should be neglected when calculating the flexural capacity of outer-plated steel-concrete composite beams under negative bending moment. The behavior of longitudinal shear resistance at the interface between the concrete flange and web of composite beam is studied, and the related calculating formula is put forward based on the structural features of the composite beam.

Seismic Behavior Analysis of Composite Buildings with Respect to RCC Buildings

2019 ◽  
Vol 15 (1) ◽  
pp. 54-61
Author(s):  
Sunita Dahal ◽  
Rajan Suwal
Keyword(s):  
Composite Beam ◽  
Seismic Behavior ◽  
Seismic Analysis ◽  
Concrete Slab ◽  
Construction Material ◽  
Bending Moment ◽  
Base Shear ◽  
Composite Construction ◽  
Shear Connectors ◽  
Earthquake Zone

Steel concrete composite construction has gained wide acceptance worldwide as an alternative to pure steel and pure concrete construction. The use of steel in construction industry is very low in Nepal compared to many developing countries. There is a great potential for increasing the volume of steel in construction, especially in the current development needs. Not using steel as an alternative construction material and not using it where it is economical is a heavy loss for the country. Use of composite material is of particular interest, due to its significant potential in improving the overall performance through rather modest changes in manufacturing and constructional technologies. Steel concrete composite construction means the concrete slab is connected to the composite beam with the help of shear connectors so that they act as a single unit. In the present work, steel concrete composite (both full and half composite) with RCC options are considered for comparative study of seismic behavior of 10 multistoried commercial buildings (4-storied, 5-storied, 6-storied, 7-storied, 8-storied, 9-storied, 10-storied, 12-storied, 16-storied and 20-storied which is situated in earthquake zone V and for earthquake loading, the provisions of IS:1893 (Part1)-2002 is considered. For modeling of composite and RCC structures, SAP2000 software is used. Steel-concrete composite construction system is an efficient, economical and innovative method for seismic resistance of multi storied buildings. Equivalent static method of seismic analysis is used in the analysis of models. Comparison of parameters like time period, axial force, shear force, bending moment, deflection, storey drifts, base shear, storey stiffness is done for full composite (beam-column both composite), half composite (column composite) and RCC structures. The results are compared and found that composite structure is better in several aspects.

COMPARATIVE STUDY ON THE BENDING PROPERTIES FOR TWO TYPES OF COMPOSITE BEAMS

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Xian Liang ◽  
Shujin Duan ◽  
Runming Niu ◽  
Fang Li
Keyword(s):  
Composite Beam ◽  
Concrete Slab ◽  
Process Analysis ◽  
Bending Moment ◽  
Composite Beams ◽  
Bending Properties ◽  
Laminated Beam ◽  
Whole Process ◽  
The Difference ◽  
Negative Bending

The difference between the steel and concrete composite-laminated action beam and the double steel and concrete composite action beam is in the connection of the top concrete slab and the steel top flange. The bending properties about the composite-laminated beam and the double composite beam in the negative flexural region are investigated in this paper. The relation of the cross section bending moment-curvature for the two types of composite beams under the action of negative bending moment are drawn by the whole process analysis method, and then the corresponding cracking moment, elastic ultimate bending moment and plastic ultimate bending moment are obtained. The analysis results have a good agreement with test data. Although the sectional bending stiffness and bending-carrying capacity of the composite-laminated beam and the double composite beam are comparable in the elastic state, the crack resistance of the composite-laminated beam is much better than that of the double composite beam.

Model Test of Steel-Concrete Composite Beam Deck under Negative Moment

2021 ◽  
Vol 871 ◽  
pp. 340-348
Author(s):  
Rui Rong ◽  
Yu Hui Shan ◽  
Li Zhao ◽  
Bao Qun Wang
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behavior ◽  
Model Test ◽  
Composite Beam ◽  
Bending Moment ◽  
Cable Stayed Bridge ◽  
Composite Girder ◽  
Force Transfer ◽  
Negative Moment ◽  
Negative Bending

In order to understand the mechanical properties and force transfer law of steel-concrete composite beam deck under negative bending moment, and further guide the design. Based on a steel-concrete composite girder cable-stayed bridge, the model test of the mechanical behavior of the steel-concrete composite girder deck under the action of negative moment was carried out. The characteristics of mechanical failure and mechanical properties were analyzed.

scholarly journals Experimental investigation on composite beams under combined negative bending and torsional moments

2020 ◽  
pp. 136943322098166
Author(s):  
Weiwei Lin
Keyword(s):  
Ultimate Load ◽  
Mechanical Performance ◽  
Composite Beams ◽  
Strain Development ◽  
Shear Connectors ◽  
Load Carrying ◽  
Interface Slip ◽  
Negative Bending ◽  
Support Conditions ◽  
Main Girder

In this study, straight composite steel-concrete beams were tested to investigate their mechanical performance under combined negative bending and torsional moments. Two specimens were used in this study, and different ratios between the applied negative bending and torsional moments were induced. Load and deflection relationships, strain development on the steel main girder and shear connectors (stud), and the slip development on the steel-concrete interface were recorded in the test and reported in this paper. The results indicate that increase of torsional moment will result in the significant decrease of the load-carrying capacities (e.g. yield load and ultimate load) of the specimens. It was also found that the normal strains of stud shear connectors in such beams are very large and non-negligible compared to their shear strains. In addition, the maximum interface slip was found occurring at around the 1/4 span, and the support conditions and serious crack of the concrete were considered to be the main causes. The research results obtained in this study can provide references for the design and analysis of steel-concrete composite beams subjected to the combined negative bending and torsional moments.

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