Early warning method for collision in offshore pile sinking construction process

Abstract

An early warning method for collision in the offshore pile sinking construction process comprises the following steps: obtaining real-time data of a pile in the pile driving process, processing the data to obtain pile parameters; pre-judging pile bodies, and screening out a pile pair which may collide with one another; establishing a pile body three-dimensional space equation for the pile pair which may collide with one another; constructing a distance function between the pile pair according to the three-dimensional space equation, and establishing a nonlinear programming model; solving the nonlinear programming model to obtain the minimum distance between the pile pair which may collide with one another; and when the minimum distance is smaller than a preset safety distance, sending out a collision early warning. By combining a space geometry algorithm, a collision detection technology and a nonlinear programming intelligent algorithm, the collision detection process is simplified, the calculation efficiency is improved, the calculation time is saved, automatic early warning when the distance between the pile pair exceeds the preset safety distance is realized, and engineering loss caused by warning after physical collision of the pile bodies is avoided.

Description

technical field [0001] The invention relates to a collision detection algorithm in the field of computer graphics and the field of machine learning, in particular to an early warning method for collision during offshore pile sinking construction. Background technique [0002] With the development of my country's marine industry, offshore projects continue to increase. In deep-water piers and sea-crossing bridges far away from the coast, as well as some new underwater structures such as pile-supported offshore oil platforms, offshore wind power, etc., pile foundation support is very critical. Pile is an important foundation of engineering construction, and the accuracy of piling directly affects the quality of subsequent engineering construction. The offshore piling construction area is far away from the land, and the operation area is large. Due to the influence of the climate, the construction is very difficult. Compared with the land piling, it is more susceptible to envir...

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Problems solved by technology

[0004] However, the simple spatial geometry algorithm has many types and is more complicated, such as judging the positional relationship between the centerlines of two cylinders (collinear, parallel, intersecting, different planes) and the position of the common vertical line and the centerlines of the two pipelines. Collision detection, however, when the central axis of the pipeline is on different planes and the two feet of the common vertical line fall inside the line segment at the same time, the judgment conditions of the algorithm are not accurate enough; The definition and judgment conditions of end-face intersection are not accurate enough; in addition, each method has many situations and has its shortcomings, and it is prone to missing calculations or some unconsidered situations, and these methods are mostly for the calculation of cylindrical space distances. The complexity of different pile types will rise rapidly, and a unified process cannot be formed

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