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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 41796 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Kazemi, Mohammad Taghi
- Abstract:
- Cold-formed steel sections are lightweight materials and suitable for building construction owing to their high structural performance. Conventionally, they are used as purlins and side rails in the building envelopes of industrial buildings. The most common sections are lipped C and Z sections, and the thickness typically ranges from 1.2 to 3.2 mm, and sections with yield strengths at 280, 350 and 450 MPa are commonly available. For connection design, codes of practice for design of cold-formed steel structures only provide design rules for the load carrying capacities of individual fastenings with bolts, screws and welds while no guidance on the structural behavior of connectors such as gusset plates in moment connections is given at all. In general, there is a lack of design guidance on bolted connections between cold-formed steel sections. For efficient design of cold-formed steel structural systems, it is highly desirable to be able to understand and assess the effects of bolted moment connections between cold-formed steel sections on the overall performances of the structural systems.This study presents the findings of finite element modeling of bolted moment connections between cold-formed steel sections. Results are compared with experimental studies available in the literature and good accordance is observed. With the aid of AISI code, Flexural failure in connected sections is accurately predicted with the proposed analysis and design rules, and so it’s necessary that the effect of combined bending and shear be carefully assessed and designed at the critical cross-sections of connected sections in the bolted moment connections. CG and IC method were used to determine the internal forces within the connections. At last a method for flexibility prediction of column base connections is proposed
- Keywords:
- Numerical Modeling ; Bolted Connection ; Steel Structures ; Cold Formed Steel
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