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Сегрегація і конвергенція у діловому світі
Дата добавления: 2015-09-15; просмотров: 564
В соответствии с п. 7.5 [1] необходимо проверить устойчивость стенки в зоне развития пластических деформаций. Должно выполняться условие:
где коэффициент a определяется по формуле:
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Условие не выполняется.
Увеличиваем размеры пояса в середине пролета до bf × tf = 380×2,8 мм. Тогда:
Проверяем местную устойчивость сжатого пояса при его ширине 380 мм:
 .
Условие выполняется. Оставляем сечение пояса в середине пролета bf × tf= 380×28 мм.
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | <== 11 ==> | 12 | |