138x
001837
2025-02-11

长时间荷载作用下未开裂构件的虚拟重心的有效惯性矩

截面抗弯强度

II=b⋅h312+b⋅h⋅(zI-h2)2 + αe,I⋅(As,def,-z,(bottom)⋅(def,-z,(bottom)-zI)2 + As,def,-z,(top)⋅(zI-def,-z,(top))2)

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