Проведена серия экспериментальных исследований по определению огнезащитной эффективности двухкомпонентного эпоксидного терморасширяющегося покрытия для стальных конструкций при воздействии углеводородного температурного режима. Получены расчетные теплофизические характеристики огнезащитного покрытия. По результатам расчета построены номограммы прогрева с приведенной толщиной металла от 2 до 20 мм и 1 9 мм. Полученные номограммы, в сочетании расчетным значением критической температуры,...

Providing required (statutory) parameters of fire resistance R 60-R 180 steel beam structures involved in ensuring the overall sustainability buildings and is not possible without use structural protection. Widespread method protection involves plate materials. The this type allows for production works “wet processes”, which very important Far North with a short period time positive temperatures. Fire-retardant treatment materials may also be carried out stopping process reconstruction...

Introduction . Reinforced concrete structures made of heavy high humidity (more than 3.5 %) are ­prone to explosive destruction. This phenomenon can lead premature onset the fire resistance such and partial or complete collapse buildings structures. The increased reinforced ­concrete is usually found in underground newly constructed buildings. tubes largely depends on (brittle) destruction when exposed temperatures surface tunnel lining. Materials methods As object study were selected with a...

Представлены результаты анализа экспериментальной и аналитической оценки огнезащитной эффективности покрытий для стальных конструкций. Обобщены данные многолетних исследований по определению зависимостей от температуры таких теплофизических характеристик, как теплопроводность теплоемкость. Разработана структурно-методологическая схема выбора огнезащитных конструкций в целях обеспечения нормативных требований огнестойкости. Проведены экспериментальные исследования терморасширяющихся на...

The paper presents the results of experimental and theoretical studies bendable concrete structures reinforced with post-tensioning tendons placed into steel ducts, regular unstressed rebars. behavior beam prototypes under standard temperature regimes was investigated. actual limits fire resistance these for loss bearing capacity structure were determined. On basis data, it is shown that which provide traction reinforcement concrete, have sufficiently high limits. This can be explained by...

Variants of progressive solutions for the use efficient fire protection means steel and reinforced concrete structures industrial buildings are considered purpose increasing actual resistance ensuring requirements safety norms. Distinctive features temperature regimes in initial phase a real from standard were established when assessing building structures. It is proposed to such standardized structures, as — buildings; regime hydrocarbons combustion oil gas, petrochemical enterprises,...

Introduction. Methodological provisions must be developed to evaluate the impact of fire resistance factor building structures on human safety during evacuation and rescue with account taken composition andfunctional characteristics other systems formulate modern regulatory requirements for under conditions, develop science-based solutions buildings in case forced deviations from set documents, justify construction structures, based structural systems, having non-standard limits, etc. The...

Проведен обзор современного деревянного домостроения в России и за рубежом. Проанализированы результаты испытаний строительных материалов из древесины на пожарную опасность, а также деревянных конструкций различных типов огнестойкость опасность как без огнезащиты, так с огнезащитой видов. Разработаны предложения нормативные документы. Намечены направления дополнительных исследований пожарной опасности зданий конструкций. The paper considers the issues of ensuring fire safety multi-storey...

The analysis of areas the development requirements for fire-resistant structures buildings and facilities in order to prevent progressive collapse during fires restrict fire spread between compartments has been provided. necessity functioning as load-bearing elements objects’ caused by a impacting after local until moment complete evacuation rescue operations is demonstrated. These additional must completely exclude objects whose destruction considered specifically hazardous adjacent...

Introduction. Widespread and effective introduction of cross-laminated timber structures into construction residential buildings substantiates the need to develop modern requirements for design fire protection systems these limit spread fire, ensure safe evacuation rescue people from buildings, increase effectiveness firefighters performing operations suppression, optimize cost space-planning solutions. Goals objectives. The purpose article is substantiate having not more than four storeys,...

One of the main directions research in field increasing actual limits fire resistance steel structures is development and implementation fire-resistant rolled products with increased thermal stability. Fire-resistant steels are whose yield strength when heated to 600 °C at least 60 % 20 °C. For their wide application construction, information needed on change properties metal high heating temperatures. In addition, it required develop a method for assessing bearing capacity considering...

Introduction. Fire protection of stairwells plays a key role in ensuring human safety residential buildings sectional type, since single stairwell blocked by fire makes it impossible to safely evacuate people from all apartments section and complicates the possibility their rescue. Modern regulations exclude gas-dynamic connection directly prohibiting evacuation higher than 3 floors. Since considerable part existing housing stock country has such architectural solutions, which have access...

Introduction. The provisions of the Federal Law Russian Federation dated 22.07.2008 No. 123-FZ "Technical Regulations on Fire Safety Requirements" stipulate possibility designing L1 type stairwells with open doorways in external walls. requirements regulatory documents necessity calculation substantiation design solutions to exclude blocking by fire hazardous factors spreading along facade. To test and analyze these requirements, this paper assesses influence different time such factors....

Introduction. It is necessary to update requirements for designing fire protection systems these facilities in terms of the safe evacuation and rescue children personnel, increase efficiency emergency response units conducting operations, as well optimize space planning structural solutions ensure a high level safety inside buildings preschool general education organizations. Goals objectives. The purpose article validate updated organizations compliance with Federal Law Russian Federation...

Рассмотрены общие методологические положения, позволяющие оценить возможность спасения людей при пожаре в жилом здании. Они базируются на расчетах временных интервалов развития опасных факторов пожара и перемещения пожарных подразделений, а также учитывают фактор потери огнестойкости строительных конструкций здания. Для дальнейшего интегрирования этих методологических положений «Методику определения расчетных величин пожарного риска зданиях, сооружениях отсеках различных классов...

Приведены экспериментальные и численные исследования несущей способности стальных балок из сталей классов С255 С355 при воздействии стандартного температурного режима пожара. Цель - уточнение метода расчета предела огнестойкости изгибаемых с учетом неравномерного распределения температуры в поперечном сечении, что позволит повысить точность расчетов безопасность таких конструкций практике строительства. The disadvantage of calculation and analytical methods for determining the fire...

Introduction. Natural ventilation of ordinary staircases in case fire is provided for by the provisions regulatory documents field safety and plays an essential role ensuring people. This article analyzes effectiveness through window openings outer walls, as well exits to roof. The purpose this develop criteria mathematical relationships evaluating technical solutions staircases, their approbation residential buildings various heights. Methods. Mathematical methods are used predict...

В статье представлена методика испытаний на огнестойкость проходок (размеры 630 х 45 мм и 65 8 мм) металлических трубопроводов в стене из газобетонных блоков толщиной 1200 800 мм, используемых объектах энергетики предназначенных для эксплуатации под давлением циркулирующей воды или водяного пара. Огневые испытания проводились при воздействии стандартного температурного режима. Актуальность работы обусловлена отсутствием настоящее время метода узлов пересечения строительных конструкций с...

Introducti on. Construction and reconstruction of buildings facilities for recreation recuperation children necessitate the development modern requirements, as well updating existing requirements design fire protection systems these in terms space-planning solutions, used structures materials, ensuring possibility safe evacuation rescue buildings, engineering systems, cost optimization solutions. The purpose article is to develop additional updated capital dormitory on territory stationary...