Stochastic seismic collapse and reliability assessment of high-rise reinforced concrete structures

2017 ◽  
Vol 27 (2) ◽  
pp. e1417 ◽  
Author(s):  
Jie Li ◽  
Hao Zhou ◽  
Yanqiong Ding
Keyword(s):  
Reinforced Concrete ◽  
Reliability Assessment ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
High Rise ◽  
Seismic Collapse

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 Increase of fire resistance of reinforced concrete structures with polypropylene microfiber

2018 ◽  
Vol 245 ◽  
pp. 03005 ◽  
Author(s):  
Marina Gravit ◽  
Elena Golub
Keyword(s):  
Reinforced Concrete ◽  
Fire Resistance ◽  
Concrete Structures ◽  
Point Of View ◽  
Reinforced Concrete Structures ◽  
Fibrous Materials ◽  
Reinforced Concrete Structure ◽  
Explosive Spalling ◽  
High Rise ◽  
Concrete Mix

The increase in the construction of high-rise, technically complex buildings and structures is a prerequisite for the widespread use of structures of heavy concrete. In this work, a special type of destruction of this type of concrete is considered in the fire action explosive spalling. One method of protection is polypropylene microfiber, the objective of which is to increase the fire resistance of concrete and reinforced concrete structures. The fire resistance tests of the reinforced concrete structure with the use of microfiber and without it have been carried out. It is shown that polypropylene microfiber can completely prevent explosive spelling of concrete. In addition, the introduction of additives in the form of fibrous materials into the concrete mix is the most optimal from the point of view of labor intensity and material costs.

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