The internal power of haunch over the frame structure of rectangular tunnels 加腋對(duì)矩形隧道框架的內(nèi)力影響
Inner force analysis for bars with variable cross - section of rectangular tunnel 矩形隧道中變截面桿件的內(nèi)力分析
Calculation of the structure clearance for rectangular tunnel in urban rail transit 軌道交通明挖矩形隧道曲線地段建筑限界的計(jì)算
Analysis of effects of trains on cutoff frequency rectangular tunnel with ridged waveguides method 列車對(duì)矩形隧道電磁波傳輸影響帶脊波導(dǎo)分析
On another side , this paper analysises the effect of the municipal pipeline on sector tunnel construction , and gives a proposal for soluation 研究了3種不同形式的區(qū)間隧道(雙圓隧道、單圓隧道、矩形隧道)內(nèi)鋪設(shè)管線的方式,并分析了外來(lái)管線對(duì)隧道的影響,提出了解決方案。
When frequency slightly higher than cutoff , using perturbation method it is to know that tunnel wall wet make attenuation of electromagnetic wave lower not only in rectangular tunnel but also in circular tunnel 當(dāng)頻率略高于隧道截止頻率時(shí)利用微擾法可知:不論是矩形隧道還是圓形隧道,隧道壁潮濕使電磁波的衰減率降低。
When frequency much higher than cutoff , using classical formulation method it is to know that tunnel wall wet make attenuation of electromagnetic wave increase in rectangular tunnel and make attenuation of other electromagnetic wave mode increase but te mode with tunnel wall permittivity 當(dāng)頻率遠(yuǎn)高于截止頻率時(shí),利用傳統(tǒng)公式法可知:矩形隧道中隧道壁濕潤(rùn)引起衰減增大;圓形隧道中e模式衰減率因電容率的增大而減小,其他各模式則因電容率的增大而增大。