Method for measuring ship percussive force

Abstract

The invention discloses a method for measuring ship percussive force. The method is characterized by: installing a sealed steel enclosing box on a bridge pier, dividing a striking meeting area on the steel enclosing box, arranging a square striking meeting box on the striking meeting area, setting a front panel of the striking meeting box as a striking meeting surface, fixedly installing a plurality of X direction, Y direction and Z direction force transducers in array distribution at a back panel, left and right panels and a bottom panel of the striking meeting box respectively, using a ship to strike the striking meeting surface, measuring respective percussive force Fx, Fy and Fz with the X direction, Y direction and Z direction force transducers in the striking meeting box, and calculating total percussive force that the ship strikes the bridge pier through a resultant force formula. The method has the following advantages: the striking meeting box is installed on the sealed steel enclosing box, thus the striking meeting box can floats up and down according to the change of a water level, it is ensured that a striking position of the striking meeting box by the ship remains unchanged, X, Y and Z directions of the striking meeting box are provided with the force transducers, the percussive force of the ship is obtained through a mode of calculating resultant force, and measured ship percussive force is comparatively in accordance with an actual working condition.

Description

technical field [0001] The invention relates to a method for measuring the impact force of a ship. Background technique [0002] In recent decades, with the development of railway traffic and the construction of high-grade highways, there are more and more large bridges across rivers, bays and island-connecting projects, and the number and probability of major accidents caused by ships hitting bridge piers are also increasing. higher. Therefore, according to the relevant standards, the design of new bridges must take into account the impact of the impact force of the ship hitting the pier, so as to ensure that the bridge has the ability to resist the impact of the wrecked ship under the specified navigation conditions (speed, tonnage) after completion. Therefore, it is very important and urgent to accurately estimate the ship impact force. [0003] At present, various design codes for bridges at home and abroad basically use semi-empirical formulas and finite element nume...

AI Technical Summary

Problems solved by technology

[0003] At present, various design codes for bridges at home and abroad basically use semi-empirical formulas and finite element numerical simulation methods to predict the ship impact force, but these methods are essentially based on the rigid body or elasticity of the ship hitting the bridge (or ship hitting the ship). Based on the simple theoretical basis of the overall collision of bodies, the difference in the calculation results is very large.

At the same time, it is impossible to correct these formulas through experiments, which brings confusion to the application in bridge engineering design.

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