Research Regarding Analysis of the Target Safety Standard for Fire Resistance Design and its Mode of Expression - Estimation for the Safety Standard Targeted by the Verification Method for Fire Resistance Performance - Chapter 7 Analysis of Safety Level for Fully-Developed Fire

Polymer composites filled with metal derivatives have been widely used in recent years, particularly as flame retardants, due to their superior characteristics, including high thermal behavior, low environmental degradation, and good fire resistance. The hybridization of metal and polymer composites produces various favorable properties, making them ideal materials for various advanced applications. The fire resistance performance of polymer composites can be enhanced by increasing the combustion capability of composite materials through the inclusion of metallic fireproof materials to protect the composites. The final properties of the metal-filled thermoplastic composites depend on several factors, including pore shape and distribution and morphology of metal particles. For example, fire safety equipment uses polyester thermoplastic and antimony sources with halogenated additives. The use of metals as additives in composites has captured the attention of researchers worldwide due to safety concern in consideration of people’s life and public properties. This review establishes the state-of-art flame resistance properties of metals/polymer composites for numerous industrial applications.

Download Full-text

Study on the Data-Bases for Fire Engineering Design of Structural Steels Members

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.628.156 ◽

2012 ◽

Vol 628 ◽

pp. 156-160

Author(s):

In Kyu Kwon ◽

Hyung Jun Kim ◽

Heung Youl Kim ◽

Bum Yean Cho ◽

Kyung Suk Cho

Keyword(s):

Bearing Capacity ◽

Fire Resistance ◽

Engineering Method ◽

Fire Tests ◽

Structural Members ◽

Data Bases ◽

Load Bearing Capacity ◽

Load Bearing ◽

In Fire ◽

Resistance Performance

Structural steel has been used since the early 1970’s in Korea as primary structural members such as columns, beams, and trusses. The materials have much higher strength such as fast construction, high load bearing capacity, high construction quality but those have a fatal weakness as well. Load-bearing capacity is going down when the structural members are contained in fire condition. Therefore, to protect the structural members made of steels from the heat energy the fire resistance performance required. Generally, the fire resistance performance have evaluated from the exact fire tests in fire furnaces. But the evaluation method takes much more time and higher expenses so, the engineering method requires. The engineering method not only adopts a science but also an engineering experience. In this paper, to make various data-bases for evaluation of structural members such as columns(H-section, RHS), beams, loaded fire tests were conducted and derived not only each limiting temperature but also fire resistance respectively.

Download Full-text

The concept of calculating the actual limit of fire resistance of building structures

Pozharnaia bezopasnost` ◽

10.37657/vniipo.pb.2021.44.47.001 ◽

2021 ◽

pp. 12-17

Author(s):

Юрий Николаевич Шебеко ◽

Алексей Юрьевич Шебеко

Keyword(s):

Fire Resistance ◽

Fire Safety ◽

Building Structures ◽

Safety Level ◽

Fire Temperature ◽

Normative Documents ◽

Software Complex ◽

Temperature Regimes ◽

Actual Fire

Проведен краткий анализ понятий, связанных с расчетом пределов огнестойкости строительных конструкций. Дано определение термина «фактический предел огнестойкости», которое отсутствует в нормативных документах по пожарной безопасности. Отмечено, что это связано с использованием на практике значений пределов огнестойкости, определенных для стандартных температурных режимов пожара, в то время как на практике указанные температурные режимы, как правило, отличаются от стандартных. Предложена концепция определения фактического предела огнестойкости, основанная на моделировании воздействия на строительную конструкцию температурного режима реального пожара (например, с помощью программного комплекса FDS 6). The brief analysis of definitions connected with estimation of fire resistance limits of building structures is conducted. There is given the determination of term “actual fire resistance limit” that is absent in fire safety normative documents. It is caused by practical application of the fire resistance limits determined for standard temperature regimes of fires only, but at the same time the temperature regimes of real fires as a rule differ from the standard regimes. There is proposed the method for determination of the actual fire resistance limit based on the modeling of influence of the real fire temperature regime on buildings structures. This modeling can be made by an application of CFD methods (for example, with the help of FDS 6 software complex). The required reliability of the building structure is considered. The proposed method can solve the problem of practical applicability of certain structural unit during designing buildings and structures, for which the use of the resistance limits obtained for the standard fire temperature regimes can lead to unjustified economic expenditures without an appropriate elevation of fire safety level of the object.

Download Full-text