TAILIEUCHUNG - Basic Theory of Plates and Elastic Stability - Part 18

Tài liệu tham khảo giáo trình cơ học kết cấu trong ngành xây dựng bằng Tiếng Anh - Yamaguchi, E. “Basic Theory of Plates and Elastic Stability” Structural Engineering Handbook Ed. Chen Wai-Fah Boca Raton: CRC Press LLC, 1999 - Stub Girder Floor Systems | Bjorhovde R. Stub Girder Floor Systems Structural Engineering Handbook Ed. Chen Wai-Fah Boca Raton CRC Press LLC 1999 Stub Girder Floor Systems Reidar Bjorhovde Department of Civil and Environmental Engineering University of Pittsburgh Pittsburgh PA Introduction Description of the Stub Girder Floor System Methods of Analysis and Modeling General Observations Preliminary Design Procedure Choice of Stub Girder Component Sizes Modeling of the Stub Girder Design Criteria For Stub Girders General Observations Governing Sections of the Stub Girder Design Checks for the Bottom Chord Design Checks for the Concrete Slab Design Checks for the Shear Transfer Regions Design of Stubs for Shear and Axial Load Design of Stud Shear Connectors Design of Welds between Stub and Bottom Chord Floor Beam Connections to Slab and Bottom Chord Connection of Bottom Chord to Supports Use of Stub Girder for Lateral Load System Deflection Checks Influence of Method of Construction Defining Terms References Further Reading Introduction The stub girder system was developed in response to a need for new and innovative construction techniques that could be applied to certain parts of all multi-story steel-framed buildings. Originated in the early 1970s the design concept aimed at providing construction economies through the integration of the electrical and mechanical service ducts into the part of the building volume that is occupied by the floor framing system 11 12 . It was noted that the overall height of the floor system at times could be large leading to significant increases in the overall height of the structure and hence the steel tonnage for the project. At other times the height could be reduced but only at the expense of having sizeable web penetrations for the ductwork to pass through. This solution was often accompanied by having to reinforce the web openings by stiffeners increasing the construction cost even further. The composite stub girder .

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