斜向波浪作用下双层水平板式防波堤波浪荷载试验研究

In this study, systematic physical model tests were performed to investigate the wave forces on the twin-plate breakwater under irregular waves. Based on the experimental results, the effects of the relative plate width B/L,wave height Hs/D and incident angle θ0 on the wave forces were analyzed and discussed. The results showed that:(1) The envelopes of the total wave pressure were generally symmetrical along the direction of plate width under the incident angles(θ0) being 0°, 15°, 30°, 45° and 60°. In particular, the envelopes of wave pressure atθ0=30° were larger than all other cases.(2) The synchronous pressure distribution of the breakwater under oblique wave action was more complicated comparing to the normal incident waves.(3) Based on data analysis, an empirical formula was obtained to estimate the total vertical force of the twin-plate breakwater.This empirical formula can be a good reference for the design basis of engineering applications under specified wave conditions.     

对“地震条件下挡土墙主动土压力及其分布的统一解”讨论的答复

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成部双流航站冬季低能见度预报经验公式

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从简化的电子运动方程出发,通过电子等效碰撞频率的修正因子依赖于介质电导率张量的假设,推导出弱电离气体折射指数的一个初等函数推广表达式。其结果与sen-Wyller公式近似,计算则简单得多。     

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本文通过弹性球两相介质的物理模型，推导出六角密堆结构或面心立方结构堆集下的两相弹性颗粒介质Ｖｓ的计算公式，作者试用该公式对利用Ｖｓ判别砂土液化势作一物理解释；对目前关于该问题的争论作一定的评价。