Long segmental structure of offshore high-piled wharf

Abstract

The invention discloses a long segmental structure of an offshore high-piled wharf; pile tops adopt a hinge joint mode to reduce the bending moment of piles generated by temperature deformation and meet the requirement of pile top connection of construction under the severe condition of offshore deep water and storms; fork piles or inclined piles more than 25 m away from a temperature deformation balanced line are arranged by adopting small horizontal included angles to reduce the axial force of the piles generated by the temperature deformation; fork piles or inclined piles less than or equal to 25 m away from the temperature deformation balanced line can be longitudinally arranged to improve the capability of resisting longitudinal horizontal force of the wharf; the first bent span space of two segmental edges is appropriately reduced to reduce the design internal force of stringers, beams and piles; and rail connection structures of a plurality of small segments, with intervals of less than or equal to 20 mm, are adopted at an expansion joint to meet the working requirement of the expansion joint for the mechanical smooth transition of a rail. The long segmental structure of the offshore high-piled wharf successfully solves the technical problem of the long segmentation of the wharf, and the segmentation length is usually more than 120 m so as to reduce the horizontal force loaded by the bents, reduce the construction cost, and facilitate replacing steel pipe piles by adopting large tubular piles (which contain PHC piles).

Description

technical field [0001] The invention relates to the field of port engineering, in particular to a high pile wharf structure. Background technique [0002] At present, the section length of the high-piled wharf is generally 60-70m for the overall assembly type, and about 35m for the overall cast-in-place type. This traditional section method is a simplified treatment of the adaptability of the wharf structure. Considering the impact of temperature difference deformation and concrete shrinkage deformation on the structure, its shortcomings are: ① The adaptability of the structure to temperature difference and shrinkage deformation is not considered. The adaptability to the longitudinal deformation of the structure is greatly affected, and the length of the sections can vary several times, which should be the main consideration for dividing the length of the wharf sections. ②The potential of the section length of the wharf is not fully utilized, resulting in a small number of ...

AI Technical Summary

Problems solved by technology

[0002] At present, the section length of high-piled wharf is generally 60-70m for the overall assembly type, and about 35m for the overall cast-in-place type. This traditional section method is a simplified treatment of the adaptability of the wharf structure. Considering the impact of temperature difference deformation and concrete shrinkage deformation on the structure, its shortcomings are: ① The adaptability of the structure to temperature difference and shrinkage deformation is not considered. The adaptability to the longitudinal deformation of the structure is greatly affected, and the length of the sections can vary several times, which should be the main consideration for dividing the length of the wharf sections

②The potential of the segmented length of the wharf is not fully utilized, resulting in a small number of segmented bent frames of the wharf and a large distribution coefficient of the horizontal force of the bent frames, which makes the internal force of the pile foundation generated by the horizontal load large

③Some wharf berths may not need to be segmented if they make full use of the potential of the segmented length, but they must be segmented when the simplified segmented length control value is used, adding expansion joints and the processing of loading and unloading processes across expansion joints

This arrangement has the following disadvantages: ①The bent frame located in the middle of the section is relatively small due to the relatively small horizontal force, and the fork piles generally have a surplus of bearing capacity and cannot fully play their role; ②If no longitudinal fork piles are arranged in the section, Then the vertical and horizontal resistance of the segment is relatively weak. In practice, a small number of vertical inclined piles are usually arranged on both sides of the segment (often at the position of the second bent frame) to resist the vertical horizontal force.

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