Multilayer multi-foot frame structure and construction method thereof

Abstract

The invention discloses a multilayer multi-foot frame structure. The multilayer multi-foot frame structure comprises at least two multi-foot frames and inclined supporting rods; the multi-foot frames are arranged at different heights in a layered mode, wherein every multi-foot frame is defined by a plurality of connection rods to form a polygon and the vertex of every polygon is provided with a cylindrical steel foot tube; the layers of multi-foot frames are connected into a whole through the inclined supporting rods; a secondary adding foundation pile is arranged on every steel foot tube in a penetrating mode; an annular gap is reserved between every steel foot tube and the corresponding foundation pile and accordingly the mortar grouting can be facilitated to form connection nodes; the shapes of the layers of multi-foot frames are equal to each other; the corresponding steel foot tubes which are arranged on the layers of multi-foot frames respectively are equal in size and are coaxially arranged in a disconnected mode. According to the multilayer multi-foot frame structure, the layers of multi-foot frames and the foundation piles are produced separately and installed in a split mode and accordingly the adjustment is convenient and the underwater pile feeding and pile clamping can be avoided in the foundation pile construction, every layer of multi-foot frame is fixedly connected with the corresponding foundation pile in series to improve the integral stiffness and stability of the structure so as to adapt to different water depths and soil layers of areas; the multilayer multi-foot frame structure adapts to straight piles and inclined piles and accordingly the economic efficiency is good and the multilayer multi-foot frame structure can also serve as a piling positioning guide device and is also especially suitable for foundation pile rock-socketed construction. The invention also discloses a construction method of the multilayer multi-foot frame structure, wherein the construction method is high in efficiency, rapid and simple.

Description

technical field [0001] The invention relates to marine construction engineering, in particular to a multi-layer multi-pod structure and a construction method thereof. Background technique [0002] Among the structural types of marine engineering foundations, jackets, pile caps, single piles, and single-layer multi-pod structures are the most commonly used foundation structures. [0003] The jacket is generally a steel truss structure, generally a tapered platform with a large lower end and a small upper end, which has high rigidity, good stability, and relatively economical materials. However, the connection of the rods of the jacket structure is relatively complicated, and the manufacturing is relatively troublesome and the processing cost is high. The jacket is supported and fixed by the pile foundation with the top of the pile below the water surface. The pile sinking construction needs to be sent underwater, which is difficult to construct and requires high equipment req...

AI Technical Summary

Problems solved by technology

[0008] 1. The main advantages of the jacket: high degree of industrialization, small wave force, good structural integrity, adapt to different water depths, save materials, and short construction period; its main disadvantages: difficult underwater alignment, difficult verticality adjustment, underwater The lower grouting connection has high requirements and is not suitable for geological conditions that require rock-socketed pile foundations

[0009] 2. The main advantages of high pile caps: large selection of construction equipment, good structural integrity, and more experience in similar structures; its main disadvantages: low degree of industrialization, large number of piles, large wave force, reinforced concrete bearing Platform construction is difficult, there are many construction procedures on water, and the construction period is long, which is not suitable for geological conditions that require rock-socketed pile foundations

[0010] 3. The main advantages of single pile foundation: high degree of industrialization, less offshore procedures, fast offshore construction, and short construction period; its main disadvantages: not suitable for deep sea areas, large wave force, large deformation during service life, material Large amount of use, large-scale lifting and piling equipment are required, and it is not suitable for geological conditions that require rock-socketed pile foundations

[0011] 4. The main advantages of single-layer multi-pod: high degree of industrialization and relatively few offshore processes; its main disadvantages: high piling precision requirements, difficult installation, difficult leveling, not suitable for geological conditions requiring pile foundation rock-socketing

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