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Flexural Stiffness and Bending Capacity of Simply-supported Composite Slim Beam with Deep Deck

Author: LiQiu
Tutor: ShiYongJiu
School: Tsinghua University
Course: Civil Engineering
Keywords: Combination of flat beam Bending stiffness Carrying capacity Deep ribbed steel sheeting
CLC: TU375
Type: Master's thesis
Year: 2005
Downloads: 133
Quote: 12
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Abstract


The combination of flat beam steel beams embedded in the concrete floor into the bond between steel and concrete realization of these two materials work together, play better mechanical properties of different materials. The new composite beams not only to a greater degree of the reduced structural storey improve the fire performance of steel structures and improve construction speed, but also to meet the requirements of the large bay on the construction of column-free space, in the multi-storey steel building, especially steel residential broad application prospects. More foreign engineering is deep rib combination of flat beam, this new type of composite beam structure is unique, the force structure is more complex stress state, abroad on simply supported deep rib combination flat beam stiffness and bearing capacity is far from adequate, the existing calculation methods rely more on engineering experience, not yet relevant theoretical and experimental studies the performance of its force, nor calculated. Firstly, by finite element numerical simulation methods elastic stress analysis of the combination of flat beam floor, explore a combination flat beam effective width values. Concluded two specimens, through testing and finite element numerical simulation method to study the characteristics of the strain distribution of the cross-section simply supported deep rib combination of flat beam performance of the force and the force process, finite element analysis results Test measurement results confirm each other, reveal a comprehensive cross-section stress, the strain distribution law. Elastic stress analysis in simply supported deep rib combination of flat beam plane section assumption of rationality and material mechanics theory is discussed on the basis of the above research combined with the results of experimental measurements of the beam cross-section of the bending stiffness and Jane the supported beam stiffness analysis to identify the relationship between the two flat beam stiffness calculation method simply supported deep rib combination. This article should be based on the results of strain measurement analysis of ultimate limit state sectional stress conditions equivalent rectangular stress diagram method is based on the combination of flat beam flexural capacity of simply supported deep ribs, and combined with the actual project The three common force status of the bearing capacity formula is deduced Finally, the test given to verify. Try using the domestic existing material structure deep rib combination of flat beam, and achieved good results, which will be conducive to this new type of composite slabs in our engineering. Also the reliability of the combination of flat beams cohesive force, try to work together, the test results show that this method is reasonable and effective through the the bonding role and structural measures to ensure that the steel beams and concrete, which helps simplify construction technology and enhanced structural reliability.

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures
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