Present Research and Prospect of Seismic Fragility for Steel-Concrete Mixed Structures

2012 ◽  
Vol 166-169 ◽  
pp. 2197-2201
Author(s):  
Yang Bing Liu ◽  
Fang Chen ◽  
Jing Bo Liu
Keyword(s):  
Concrete Structures ◽  
Steel Structures ◽  
Structural Type ◽  
Seismic Fragility ◽  
Disaster Reduction ◽  
Mixed Structure ◽  
High Rise ◽  
Aseismic Design ◽  
Research Situation ◽  
Trend Of Development

Because of possessing the advantage of steel structures and concrete structures, the steel-concrete mixed structure has been developed rapidly and used widely. And at present, it has been a popular structural type in high-rise buildings. Although mixed structures have been used in earthquake region more and more, seismic fragility studies for this type of construction is scarce. Based on analyzing and summarizing the available studies on structural seismic fragility, present research situation on seismic fragility of mixed structures at home and abroad is described; the key problems to solving urgently in the analysis of seismic fragility for mixed structures are put forward; and the trend of development is forecasted. Study on the issues above will give some help to aseismic design, strengthening, repairing and disaster reduction of mixed structures.

Scientific And Technical Support Of Design And Construction Of High-Rise Buildings On The Example Of The Comlex In St. Petersburg

2019 ◽  
pp. 4-11 ◽  
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structures ◽  
Steel Structures ◽  
Technical Support ◽  
Laminated Glass ◽  
Reinforced Concrete Structures ◽  
Steel Reinforced Concrete ◽  
High Rise ◽  
Domestic Practice ◽  
Design And Construction

The problems considered within the frame of scientific and technical support are shown on the example of design and construction of a unique high-rise building of "Lakhta Center" in St. Petersburg. The main results of design support and construction of steel, steel-reinforced concrete structures, as well as structures made of laminated glass are presented. The main reason for atypical design and technological solutions for steel structures are thickness of rolled steel and the material of structures non-standard for domestic practice. In addition, there was no normative approach to the design of steel-reinforced concrete structures and structures made of laminated glass at the time of design of the complex. The tests carried out within the scientific and technical support provided the necessary information for the design of unique structures. It is required to develop the set of rules defining the requirements for scientific research when constructing unique objects for a more orderly scientific and technical support and justification of the amount of work performed.

scholarly journals Dynamic Analysis on RCC and Composite Structure for Uniform and Optimized Section

2021 ◽  
Vol 9 (12) ◽  
pp. 1114-1127
Author(s):  
Ankit Kumar
Keyword(s):  
Dynamic Analysis ◽  
Composite Structure ◽  
Composite Structures ◽  
Response Spectrum ◽  
Steel Structures ◽  
Seismic Zone ◽  
Dead Weight ◽  
Conventional Concrete ◽  
High Rise ◽  
Time Period

Abstract: This study examines the composite structure that is increasing commonly in developing countries. For medium-rise to high-rise building construction, RCC structures is no longer economical due to heavy dead weight, limited span, low natural frequency and hazardous formwork. The majority of commercial buildings are designed and constructed with reinforced concrete, which largely depends on the existence of the constituent materials as well as the quality of the necessary construction skills, and including the usefulness of design standards. Conventional RCC structure is not preferred nowadays for high rise structure. However, composite construction, is a recent development in the construction industry. Concrete-steel composite structures are now very popular due to some outstanding advantages over conventional concrete and steel structures. In the present work, RCC and steel-concrete composite structure are being considered for a Dynamic analysis of a G+25-storey commercial building of uniform and optimized section, located at in seismic zone IV. Response Spectrum analysis method is used to analyze RCC and composite structure, CSI ETABS v19 software is used and various results are compared such as time period, maximum storey displacement, maximum storey stiffness. Maximum storey shear and maximum stoey overturning moment. Keywords: RCC Structure, Composite Structure, Uniform Section, Optimized Section, Shear Connector, Time Period, Storey Displacement, Storey Shear, Storey Stiffness, Response Spectrum method, ETABS

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