For lack of the theoretical calculation method at present,the skew bridge backwater is simulated in adopting circle pier and embank uncompressing river through hydraulic models.
桥梁建设多在天然河道进行,当桥墩阻水面积占河道过水面积的比例较小时,可以不考虑桥墩壅水影响。
Hydraulic model
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Hydraulic analogy
The electronic–hydraulic analogy (derisively referred to as the drain-pipe theory by Oliver Lodge) is the most widely used analogy for "electron fluid" in a metal conductor. Since electric current is invisible and the processes at play in electronics are often difficult to demonstrate, the various electronic components are represented by hydraulic equivalents. Electricity (as well as heat) was originally understood to be a kind of fluid, and the names of certain electric quantities (such as current) are derived from hydraulic equivalents. As with all analogies, it demands an intuitive and competent understanding of the baseline paradigms (electronics and hydraulics).
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