weak roof 中文意思是什麼
weak roof
解釋
不穩定頂板-
Research on comprehensive control technique for heavy roof fall in weak mudstone drift
松軟泥巖巷道大冒頂綜合治理技術的研究 -
The number of modes should be selected according to the participant coefficient of mode when calculating the internal force by the response spectrum method ; ( 4 ) the roof plate of large base which connect the towers together should be thick enough but not exceeding the proper scope that the towers and the large base can vibrate together, ( 5 ) in structures with large base and muti - towers, with increasing of the capacity of the large base, the inter - story shear force will increase while the inter - story displacement will decrease as to fulfill the ductility request to avoid the large base becoming weak story, but meanwhile, the upper story will turn into weak story, thus the coefficient r s should be within 2. 0 ~ 3. 0
採用振型分解反應譜法計算結構內力時應根據振型參與系數選擇振型避免漏選；大底盤多塔樓結構連接各塔樓的裙房屋面剛度應做得大些，以保證底部裙房與上部塔樓共同振動，但也不能過剛；大底盤多塔樓結構底盤承載力的加強將使底盤層剪力增大、層間變形減小，但易於滿足延性要求，在一定程度上可避免底盤成為薄弱層。但底部加強會導致薄弱層的上移，因此採取提高底盤承載力的措施的效果是有限度的，承載力系數s宜取為2 . 0 3 . 0之間。 -
And, the structure weak - regions lie respectively in the transfer - floor, the vicinity of the 20th floor and the roof, which need to make the measure to avoid the structure plastic deformation under the action of stronger earthquake. ( 5 ) the vibration form appears the coupling of move and torsion, electing the first 15 modes to analyze can reflect accurately the actual load - function situation of the structure
轉換層、 20層附近以及頂層為結構的薄弱層，需採取加強措施以防在強震下產生塑性變形。 （ 5 ）本結構的振動形式表西安理工大學碩士學位論文現為平動與扭轉的禍連，取結構的前巧階振型作分析能夠較精確的反應結構的實際受力狀態。
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