Fire Resistance Test of a Reinforced Concrete Beam-Supporting Column Transfer Structure Joint Unit

2019 ◽  
Vol 44 (5) ◽  
pp. 5117-5129 ◽  
Author(s):  
Weiyi Kong ◽  
Chuanguo Fu ◽  
Weiqing Liu
Keyword(s):  
Reinforced Concrete ◽  
Fire Resistance ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Resistance Test ◽  
Fire Resistance Test ◽  
Transfer Structure

Calculation of Ultimate Bearing Capacity of Prestressed Steel Reinforced Concrete Structure under Fire

2011 ◽  
Vol 250-253 ◽  
pp. 2857-2860 ◽  
Author(s):  
Yu Zhuo Wang ◽  
Chuang Guo Fu
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Fire Resistance ◽  
Concrete Structure ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Ultimate Bearing Capacity ◽  
Reinforced Concrete Structure ◽  
Steel Reinforced Concrete ◽  
Resistance Performance

Prestressed steel reinforced concrete structure, compared with other concrete structure has its unique advantages. So it is mainly used in large span and conversion layers. With the popularization of this structure,more attention should be payed on fire resistance performance. On the basis of reasonable assume,two steps model is used as concrete high strength calculation model. Simplified intensity decreased curve is used as rebar,steel and prestressed. Two ultimate bearing capacity formulas of prestressed steel reinforced concrete beam are established. One is for the beam whose tensile area is under fire, the other is for the beam whose compression area is under fire. Prestressed steel reinforced concrete structure has both prestressed concrete structure’s advantages and steel reinforced concrete structure ’s advantage. Steel reinforced concrete is used to improve the bearing capacity of the structure. Prestressed steel is used to improve the ultimate state of structure’s performance during normal use. Thereby structure’s performance is better to play. There are many similarities between prestressed steel reinforced concrete structure and steel reinforced concrete structure about fire resistance performance. Because of prestressed steel reinforced concrete structure’s own characteristics, there are still many problems about fire resistance. This paper mainly presented bending terminal bearing capacity of prestressed steel reinforced concrete beam under fire. Established simplified formulae for calculation, it is meet the engineering accuracy requirement.

Fire Resistance Performance of Reinforced Concrete Column with Embedded Permanent Formwork Using Woodwool Panel

2014 ◽  
Vol 661 ◽  
pp. 111-117 ◽  
Author(s):  
Ahmad Zakiah ◽  
Ahmad Nursafarina ◽  
Azerai Ali Rahman ◽  
Hanizah Abdul Hamid ◽  
Mohammad Soffi Md Noh
Keyword(s):  
Reinforced Concrete ◽  
Cross Sections ◽  
Fire Resistance ◽  
Resistance Test ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Permanent Formwork ◽  
Fire Resistance Test ◽  
Slender Column ◽  
Resistance Performance

This paper reports the investigation on the fire resistance performance of reinforced concrete column with embedded permanent formwork from woodwool board (WWCB). A series of slender column embedded with and without WWCB with cross-sections 200 mm x 200 mm for column without WWCB and 300 mm x 300 mm with embedded 50 mm thick WWCB. The height of the slender column was 2000 mm. The fire resistance test was performed in accordance with BS 476-22:1987 for two (2) hours fire exposure. The fire resistance test for the embedded column with WWCB was classified as “good” in resisting fire and heat transfer.

METHOD OF MODELING A REINFORCED CONCRETE BEAM WITH DOUBLE REINFORCEMENT FOR STRENGTH, DEFORMATION AND FIRE RESISTANCE

2019 ◽  
Vol 9 (1) ◽  
pp. 4-9
Author(s):  
Sergey S. MORDOVSKY ◽  
Nikolay A. ILYIN ◽  
Denis A. PANFILOV ◽  
Valeriya N. TALANOVA ◽  
Yana A. BUZOVSKAYA
Keyword(s):  
Reinforced Concrete ◽  
Fire Resistance ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Experimental Studies ◽  
Reinforced Concrete Beam ◽  
Reinforced Concrete Beams ◽  
Scale Model ◽  
Technical Solution ◽  
Labor Costs

The article presents a new technical solution, which relates to the field of construction, in particular, to the testing of bending reinforced concrete elements - building beams for strength, deformation and fire resistance on a scale model. The new method of solution implies an increase in the information content, visual clarity and depth of experimental studies of reinforced concrete beams as a result of using the cost-effective way of designing geometric and forceful similarity to the scale model of reinforced concrete beams for strength, deformation and fire resistance. The proposed method allows us to estimate the limiting states of a reinforced concrete beam by strength, deformation and fire resistance; develop an analytical model for calculating the actual fire resistance; save on labor costs in the manufacture of large scale model of full scale design for its testing.

scholarly journals EVALUATION OF DESIGN FIRE RESISTANCE OF A REINFORCED CONCRETE BEAM WITH CENTRAL PROP

2019 ◽  
Vol 9 (4) ◽  
pp. 16-21
Author(s):  
Nikolay A. ILYIN ◽  
Denis A. PANFILOV ◽  
Nikita A. KOLESNEV ◽  
Ivan A. SILANTYEV
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Fire Resistance ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Calculated Cross Section ◽  
Destructive Testing ◽  
Technological Method ◽  
Design Fire ◽  
Heating Pattern

The article describes the essence of the technological method of testing a reinforced concrete beam with central prop for fire resistance without destruction, based on a set of individual indicators of the quality of concrete and reinforcement. The influence of the geometrical dimensions of a reinforced concrete beam with central prop, the heating pattern of the calculated cross section under fire conditions, the placement of the reinforcement in the calculated cross section, the depth and degree of fire protection of the concrete, the coefficient of thermal diffusion of concrete, the magnitude of the test load on the beam and the stress intensity in the bars of the longitudinal working reinforcement were investigated. The fire resistance limit of a beam with central prop is determined by the sign of loss of bearing capacity using the analytical equation (1). The use of the new proposed technological method allows to determine the actual fire resistance of a two-span reinforced concrete beam without full-scale fire impact, simplifies engineering calculations, increases the reliability of static material quality control and non-destructive testing, reduces economic costs.

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