Application and Prospect of Bamboo/Steel Composite Material in Civil Engineering Structure

2010 ◽  
Vol 113-116 ◽  
pp. 989-993 ◽  
Author(s):  
Huang Ying Shen ◽  
Yu Shun Li ◽  
Zhen Wen Zhang ◽  
Tian Yuan Jiang ◽  
Jun Zhe Liu
Keyword(s):  
Composite Material ◽  
Failure Modes ◽  
Civil Engineering ◽  
Failure Process ◽  
Composite Beams ◽  
Flexural Behavior ◽  
Material System ◽  
Composite Slabs ◽  
Steel Composite ◽  
Cold Formed Steel

The objective of this research was to develop a new composite material/system in structural civil engineering. To use of mechanical properties of bamboo-based panel and cold-formed steel, this study composite two kind of materials above-mentioned together utilizing structural adhesives. The research developed various of bamboo/steel composite members, such as composite slabs, composite walls, composite beams and composite columns. And the paper emphasized mechanical performance of bamboo/steel composite slabs and composite beams. Experimental studies on flexural behavior of 6 composite slabs and 9 composite beams were carried out and the failure process, failure modes and failure mechanism were investigated. Experiment results indicates that the bamboo plywood and cold-formed steel can form an excellent composite cross-section; Load vs. mid-span deflection curves of composite slabs and composite beams show linear on serviceability limit state. The maximum ultimate strength of composite slabs and beams have reached 30.0 kN•m and 36.13 kN•m respectively. The study shows that bamboo-steel composite members have good prospects in building structures of China.

The flexural behavior of cold-formed steel composite beams

2020 ◽  
Vol 218 ◽  
pp. 110819
Author(s):  
Yu Shi ◽  
Kaidi Yang ◽  
Yu Guan ◽  
Xinmei Yao ◽  
Lei Xu ◽  
...  
Keyword(s):  
Composite Beams ◽  
Flexural Behavior ◽  
Steel Composite ◽  
Cold Formed Steel

Reliability analysis of shear connection in composite beams with profiled steel sheeting

2011 ◽  
Vol 8 (1) ◽  
pp. 29-34
Author(s):  
M. Youcef ◽  
M. Mimoune ◽  
F. Mimoune
Keyword(s):  
Reliability Analysis ◽  
Failure Modes ◽  
Composite Beams ◽  
Steel Beam ◽  
British Standard ◽  
Shear Connectors ◽  
Shear Connection ◽  
Composite Slabs ◽  
European Code ◽  
Headed Stud

This paper describes the reliability analysis of shear connection in composite beams with profiled steel sheeting. The profiled steel sheeting had transverse ribs perpendicular to the steel beam. The level of safety of shear connection, and failure modes were determinate. An extensive parametric study was conducted to study the effects on the safety and behaviour of shear connection by changing the profiled steel sheeting geometries, the diameter and height of headed stud, as well as the strength of concrete. We compared the level safety calculated using the American specification, British standard and European code for headed stud shear connectors in composite slabs with profiled steel sheeting perpendicular to the steel beam. It is found that the design overestimated the level safety of shear connection.

Flexural behavior of cold-formed steel concrete composite beams

2013 ◽  
Vol 14 (2) ◽  
pp. 105-120 ◽  
Author(s):  
T. Valsa Ipe ◽  
H. Sharada Bai ◽  
K. Manjula Vani ◽  
Merchant Mohd Zafar Iqbal
Keyword(s):  
Composite Beams ◽  
Flexural Behavior ◽  
Cold Formed Steel

Influence of Arctic seawater exposure on the flexural behavior of woven carbon/vinyl ester composites

2017 ◽  
Vol 21 (3) ◽  
pp. 1190-1208 ◽  
Author(s):  
R Garcia ◽  
AG Castellanos ◽  
P Prabhakar
Keyword(s):  
Flexural Strength ◽  
Vinyl Ester ◽  
Structural Damage ◽  
Failure Modes ◽  
Sea Water ◽  
Water Saturation ◽  
Flexural Modulus ◽  
Flexural Behavior ◽  
Failure Behavior ◽  
Material System

In this paper, the adverse effects of sea water environment and arctic temperatures on woven carbon fiber/vinyl ester composites are explored in the form of moisture uptake, impact on flexural modulus, strength, and structural damage. The research presented here attempts to relate failure modes to the flexural behavior of these composites exposed to three key environmental conditions: sea water, arctic temperature and combined sea water/arctic condition. Sea water saturation in general degrades the flexural strength up to ≈19.45%. Microstructures of dry and saturated samples are compared using scanning electron microscopy, where a saturated surface with distinctive hue for wet samples is observed as compared to a rough (parched) surface in the dry samples, implying large concentrations of sea water in a thin layer at the specimen boundaries. Arctic exposure and combined condition on these laminates increase the flexural strength by about 23.1% and 36.2%, respectively. However, they tend to shift the post peak behavior from progressive to brittle-type failure as compared to dry samples, which is attributed to matrix and fiber embrittlement in the material system caused by exposure to low temperature. Further, relatively large variations are observed in the flexural strength values of samples exposed to the combined condition (sea water saturated + arctic), which can be attributed to the freezing of sea water that was entrapped during sea water saturation. Variation in the quantity and location of sea water entrapped can alter the flexural strength significantly. Due to the aforementioned flexural responses and failure behavior observed in woven carbon/vinyl ester composites exposed to sea water arctic environment, special consideration is required while designing critical load bearing components in naval applications to avoid possible catastrophic structural failure.

Flexural Behavior of Concrete-Filled FRP-Steel Composite Circular Tubes

2011 ◽  
Vol 243-249 ◽  
pp. 1316-1320 ◽  
Author(s):  
Yang Wei ◽  
Gang Wu ◽  
Zhi Shen Wu ◽  
Dong Sheng Gu
Keyword(s):  
Large Scale ◽  
Failure Modes ◽  
Concrete Beams ◽  
Steel Tube ◽  
Flexural Behavior ◽  
Composite Tube ◽  
Circular Tubes ◽  
Steel Composite ◽  
Plastic Stage ◽  
Elastic Stage

Three large-scale concrete-filled FRP-steel composite circular tubes and a control steel tube were tested to investigate flexural behavior. The effects of FRP and composite with different types of FRP with various ultimate strains were investigated. The study demonstrated the important effect of FRP, and showed that the load-displacement curves of FRP-steel composite tube beams could be divided into four stages: elastic stage, plastic stage, hardening stage and residual stage. An additional decline stage was gained for multi-fiber with different ultimate strains and steel composite tube concrete beams. FRP could increase the ultimate bearing capacity and bring the hardening stage after steel tube yielding, and a certain degree of stiffness would be achieved to avoid the “zero stiffness”. The composite of a variety of FRP could relax fracture failure for the FRP-steel composite steel concrete beams, realized the successive rupture of fiber in batches and changed the failure modes.

An Overview of Numerical Studies on Flexural Performance of Built-Up Cold-Formed Steel Beam (CFSB) Filled with Concrete

2021 ◽  
Vol 9 (2) ◽  
pp. 15-24
Keyword(s):  
Composite Beam ◽  
Failure Modes ◽  
Short Review ◽  
Flexural Behavior ◽  
Future Research ◽  
Nonlinear Simulation ◽  
Simulation Accuracy ◽  
Flexural Performance ◽  
Numerical Studies ◽  
Cold Formed Steel

Cold-formed steel (CFS) built-up sections have been recently introduced with other materials such as concrete connected by means of bolting and screws to avoid the problems of the CFS sections buckling. The flexural analysis of CFS-concrete composite beam is more complicated in terms of design and failure mode. Therefore, this paper attempts a short review on the numerical studies of CFS section with and without concrete under the flexural load. In particular, the CFS buckling failure modes were critically reviewed. Furthermore, the important considerations such as material properties definition and interactions during the numerical simulation were discussed. The review presented in this paper highlights considerable potential on how the nonlinearities of the concrete material, CFS-concrete interaction and connection types affect the level of simulation accuracy in predicting the flexural behavior of the composite beam. Moreover, the connections type, the nonlinear simulation methods and strategies and findings for the CFS-concrete flexural behavior were critically reviewed. The directions of the future research were provided through the concluded remarks and recommendations in achieving a higher accuracy of simulation results as well as more effective design philosophy in future to promote the utilization of CFS composite beam in construction industry.

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