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Slope breaking wave impact pressure calculation method

A technology of impact pressure and calculation method, applied in the field of slope breaking wave impact pressure calculation, which can solve the problems of lack of field test data and different

Active Publication Date: 2018-08-28
JIANGSU WATER CONSERVANCY SCI RES INST
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Problems solved by technology

[0004] However, although there have been a lot of research results on the impact force of breaking waves, due to the lack of field test data and the complexity of theoretical research, numerical simulation, and physical model tests, no research institution has been able to clarify the "practical force" from the theoretical or experimental perspective. Maximum possible wave impact"
In addition, it is known that the impact force of breaking waves on the seawall slope is closely related to the type of breaking waves, incident wave height, incident wave angle, wavelength, wave steepness, and slope ratio. The existing empirical formulas are still difficult to fully consider. The experimental methods for formula derivation are different, and the experimental data for verification are also different, which leads to certain differences and applicability in different empirical formulas.
In fact, the comparative research results of a small number of domestic empirical formulas for breaking waves, although mainly focused on the comparative analysis of the formulas of the former Soviet Union, the results show that there are also large differences between different Soviet formulas

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Embodiment Construction

[0033] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention,

[0034] As a comparison formula, the formula of "Code for Design of Seawall Engineering" (GB / T 51015-2014) (those without units are common knowledge in this field.) Calculate the maximum wave-breaking pressure p on the slope max ;According to the formula of "Code for Design of Seawall Engineering" (GB / T51015-2014), the slope ratio of the facing surface of the seawall is preset as 1:m, and the value range of m is 1.5≤m≤5.0. wave pressure p max Calculated according to the following formula 1:

[0035]

[0036] In the formula: p max The unit is kPa; γ—the bulk density of water, the unit is kN / m 3 ; H - wave height (m); L - wavelength (m);

[0037] k 2 - Coefficient, calculated according to Table 1;

[0038] Table 1 Coefficient k 2

[0039]

[0040] - The maximum relative wave pressure on the slope is calculated according to...

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Abstract

The invention discloses a slope breaking wave impact pressure calculation method. At present, slope breaking wave impact pressure calculation is an important link of slope-type seawall engineering design, and plunging breaking wave is a most serious and most dangerous breaking wave type; on the basis of simplified assumed conditions, a half-experience half-theory plunging breaking wave impact pressure calculation formula is put forward, existing regular wave flume experiment data and on-site observation data are utilized, the formula and some empirical formulas adopted currently at home and abroad are compared and analyzed, and the result shows that a former Soviet Union formula adopted currently in China in a standard manner is small in calculation result in a calculation condition with large wave height. The method is similar to calculation results of the Stanczak improved formula and has good wrapping performance on used verifying experiment data.

Description

technical field [0001] The invention relates to a method for calculating the wave-breaking impact pressure on a slope. Background technique [0002] Generally speaking, the impact force exerted by breaking waves on marine structures is much greater than the wave force without breaking. Therefore, affected by the impact of wave breaking, the seawall surface protection structure is easily damaged due to insufficient strength design, which induces local seawall damage. Damage, which is also one of the common forms of seawall damage, must be given full attention and consideration in seawall protection design. Among the three common types of breaking waves, that is, spilling breaker, plumngling breaker and surging breaker, the surging breaker has the greatest impact on the seawall and has the most destructive effect. powerful. Wave breaking is a complex physical phenomenon, in which the instability of waves mixed with bubbles, even in the indoor breaking test of the same regula...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F2119/06G06F30/20
Inventor 杨星钱钧高士佩胡晓东翁松干吴苏舒吴沛沛郭刘超李志清徐季雄肖鹏尹子龙
Owner JIANGSU WATER CONSERVANCY SCI RES INST
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