A Study on the Calculation Method of Wave Crest Height and Panel Wave Force of a New Barrel-Pile Foundation Composite Structure Wharf

Longzai Ge,Hanbao Chen,Songgui Chen,Haiyuan Liu

doi:10.3390/app12031060

Longzai Ge, Hanbao Chen + Show 2 more

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https://doi.org/10.3390/app12031060

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Abstract

Due to the depletion of near-shore resources and the complex environment of offshore deep-water open port construction, a new barrel-pile foundation composite structure wharf is proposed. In order to provide technical support for the engineering design and application of the new structure, research is carried out on a physical model. Through setting up a series of group tests, on the basis of fully understanding the wave impact characteristics of the wharf panel of the new structure: (1) the relationship between the wave crest height, impact force, and various influence factors is established; (2) a calculation method and formula are put forward (compared with the physical model test data, the calculation formula results have good accuracy); (3) according to the formulas of wave crest height and panel impact force, a determination method for the wharf surface elevation of the new structure is given. In addition, due to the limitations of the test conditions, it is suggested that the physical model should be further verified for a complex transverse and longitudinal beam structure or extreme sea conditions, such as traveling wave breaking and wave inundation of the wharf.

Highlights

At present, most port sites with superior coastal and near-shore natural conditions have been developed and utilized, and offshore deep water will be the development direction of large-scale port and wharf construction in the future
In order to solve the problem of the surface facing large waves and strong currents in the open sea, (1) for the traditional gravity structure, the overall stability of the structure is affected by excessive waves and current force on the wavefacing surface; (2) the traditional pile foundation structure faces difficulties in pile sinking construction, so a new barrel-pile foundation composite structure wharf is proposed
: (1) the pile adopts the combination of straight piles and inclined piles, and the pile diameter ranges from ∅ 0.8 m to ∅ 2.5 m, so it can quickly disperse the external load and has little influence on wave reflection; (2) the box barrel foundation is a multibarrel combination type, and the top elevation is designed to be 1.25 times the incident wave height of the lowest tide level

Summary

Introduction

Most port sites with superior coastal and near-shore natural conditions have been developed and utilized, and offshore deep water will be the development direction of large-scale port and wharf construction in the future. Traditional gravity and pile foundations are the main two forms of wharf structure, but when facing the offshore deep-water environment, these display many deficiencies. In order to solve the problem of the surface facing large waves and strong currents in the open sea, (1) for the traditional gravity structure, the overall stability of the structure is affected by excessive waves and current force on the wavefacing surface; (2) the traditional pile foundation structure faces difficulties in pile sinking construction, so a new barrel-pile foundation composite structure wharf is proposed. Compared with the design in [2], a pile foundation square caisson gravity structure, the new structure has the advantages of a coordinated structure, fast dispersion under the wave load, a wide range of applicable geological foundations, and a simple construction process, saving project progress and cost. The construction process is simple; (4) the overall structure is flexible at the top and rigid at the bottom, which is suitable for different complex geological conditions

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Conclusion