Аннотації

Автор(и):
Білик С.І., Білик А.С., Нілова Т.О., Шпинда В.З., Цюпин Є.І
Автор(и) (англ)
Bilyk S.I., Bilyk А.S., Nilova T.O., Shpynda V.Z., Tsyupyn E.I.
Дата публікації:

25.06.2018

Анотація (укр):

Представлено дослідження стійкості сталевих портальних рам з двотаврів зі змінною висотою стінки. Залежно від жорсткості вузлів і умов закріплення елементів в рамах досліджено стійкість колон. Пропонується підхід для визначення стійкості рам через стійкість колон на пружних опорах. Жорсткість вузлів і пружність опор визначається із статичного розрахунку рами. Розглянуто п'ять різних випадків стійкості пружних стрижнів при різних крайових умов закріплення колон на пружних опорах. Проведено чисельні дослідження коефіцієнтів розрахункової довжини елементів портальних рам при змінності перерізу і жорсткості колон. Розвинений підхід до визначення стійкості елементів рам з площини рам залежно від піддатливості системи в'язів, проведений аналіз стійкість будівлі з комп'ютерним моделюванням і з обчисленням коефіцієнтів стійкості, фактору впливу системи в'язів рами на стійкість ригелів з площини портальних рам.

Анотація (рус):

Представлено исследование устойчивости стальных портальных рам из двутавров с переменной высотой стенки. В зависимости от жесткости узлов и условий закрепления элементов в рамах исследована устойчивость колонн. Предлагается подход для определения устойчивости рам через устойчивость колонн на упругих опорах. Жесткость узлов и упругость опор определяется из статического расчета рамы. Рассмотрено пять различных случаев устойчивости упругих стержней при различных краевых условий закрепления колон на упругих опорах. Приведены численные исследования коэффициентов расчетной длины элементов портальных рам при переменности сечения и жесткости колонн. Развит подход к определению устойчивости элементов рам из плоскости рам в зависимости от податливости системы связей, проведен анализ устойчивость здания с компьютерным моделированием и с вычислением коэффициентов устойчивости, фактора влияния системы связей рамы на устойчивость ригелей из плоскости портальных рам.

Анотація (англ):

Presented is the research of the stability of portal frames made of variable I cross-sections, depending on supports fastening factors and frames elements unfastening. In the process of mathematical research examined were five different cases of fixing columns nodes of portal frames resiliently mounted in each case, the stability criteria having been defined. In addition, conducted were studies to determine the coefficients of the portal frames elements effective length calculation in finding critical load on the column. Coefficients of the effective length factor of the welded variable I cross-section columns have been obtained. The influence of brace systems on stiffening of the whole structure, stability of the unit frames as well as the overall stability of the building with computer simulation and calculation have been studied, the coefficients of the influence of the frame structure on the stability of the unit frames having been obtained.

Література:

References:

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