CN-122009757-A - Large offshore photovoltaic steel truss structure assembly site arrangement, transfer and shipping method

CN122009757ACN 122009757 ACN122009757 ACN 122009757ACN-122009757-A

Abstract

The invention discloses a method for arranging, transferring and shipping large-scale offshore photovoltaic steel truss structures in a spliced field, and relates to the technical field of offshore renewable energy sources. The method comprises the steps of reasonably arranging a marine photovoltaic structure assembly and transfer site, improving the site utilization rate, adopting an orthogonal track-storage battery module car transfer mode, improving the reversing transfer efficiency and the operation safety of the structure, combining an independent transfer channel and a bailey temporary trestle through a multi-channel-multi trestle transfer mode, realizing parallel loading and unloading of the structure and cross-site transfer, shortening the storage yard occupation time, adopting a floating crane in a lifting link, configuring a lifting conversion tool and a remote control unhooking system, improving the lifting stability and the operation efficiency, carrying out local reconstruction on a small transport ship in the shipping process, and adding a detachable support platform to improve the loading utilization rate. The invention can effectively optimize the assembling, transferring and shipping processes of the offshore photovoltaic steel truss structure, remarkably improves the operation efficiency, the environmental adaptability and the economy, and has good flexibility and expandability.

Inventors

HONG HUABIN
LIU XIAOTIAN
ZHANG QIANG
MA ZHAOYU
WANG XU
CHEN CHEN
JIANG YINGCHONG
YU JIANQIANG
Duan Liuhe

Assignees

中国电建集团华东勘测设计研究院有限公司
浙江华东工程咨询有限公司

Dates

Publication Date: 20260512
Application Date: 20260113

Claims (8)

1. The method for arranging, transferring and shipping the large-scale offshore photovoltaic steel truss structure assembly site is characterized by comprising the following steps of: The method comprises the steps that S1, a large-scale offshore photovoltaic structure construction field is divided into a plurality of shipping fields, wherein the shipping fields are sequentially provided with a single truss chord web member assembly field, an inter-truss chord web member assembly field, a main truss assembly forming field, a purline assembly field, a photovoltaic panel assembly field and a large-scale offshore photovoltaic structure shipping storage field from top to bottom, orthogonal tracks are paved among the shipping fields, and the large-scale offshore photovoltaic structure construction field is arranged in a land area close to the coast; S2, arranging a battery module vehicle along the orthogonal track, wherein the battery module vehicle is positioned on a large-scale offshore photovoltaic steel truss structure and performs reversing transportation, the battery module vehicle comprises an X-direction battery module vehicle and a Y-direction battery module vehicle, and a jacking device and a conversion tool are arranged on the X-direction battery module vehicle and the Y-direction battery module vehicle; S3, a steel bailey temporary trestle is arranged between the large offshore photovoltaic structure shipping yard site and the land area close to the coast, the steel bailey temporary trestle is connected with the orthogonal track to form an independent shipping channel, and a field region inter-rotating track is arranged between the adjacent steel bailey temporary trestle; S4, transferring the large-scale offshore photovoltaic steel truss structure to a preset position of the front edge of the steel bailey temporary trestle along the independent shipping channel, and configuring a floating crane ship in the sea area near the preset position of the front edge, wherein the floating crane ship is provided with a steel truss lifting and transferring tool, and the floating crane ship carries out lifting and transferring operation on the large-scale offshore photovoltaic steel truss structure; s5, lifting the large-scale offshore photovoltaic steel truss structure to a transport ship, symmetrically installing the widened overhanging support platforms on two sides of the transport ship, and repeatedly disassembling and assembling the widened overhanging support platforms.
2. The method for arranging, transferring and shipping the large-scale offshore photovoltaic steel truss structure assembly sites according to claim 1, wherein the field range which is expanded as required is reserved on the outer side of the large-scale offshore photovoltaic structure construction field, a parts processing field is arranged in the middle of the large-scale offshore photovoltaic structure construction field, and parts processing workshops are arranged in the parts processing field.
3. The method for arranging, transferring and shipping large-scale offshore photovoltaic steel truss structure assembly sites according to claim 1, wherein the shipping sites are connected through field inter-transfer tracks, a part transportation road is arranged on one side of the field inter-transfer tracks, and components of the Shan chord web member assembly sites, the inter-truss chord web member assembly sites, the main truss assembly forming sites, the purlin assembly sites and the photovoltaic panel assembly sites are supplied by the part processing factory building, and the components are transported through the part transportation road.
4. The method for arranging, transferring and shipping the large-scale offshore photovoltaic steel truss structure assembly sites according to claim 1, wherein the step of reversing and transferring is as follows: S21, carrying the large-scale offshore photovoltaic steel truss structure by the X-direction battery cell module car and moving to an orthogonal track-battery cell module car transfer block; S22, starting a jacking device on the X-direction battery module vehicle, and lifting the large-scale offshore photovoltaic steel truss structure with the lower conversion tool; S23, remotely controlling the Y-direction battery module vehicle to drive into the lower part of the conversion tool of the lifted large-scale offshore photovoltaic steel truss structure, and lowering the jacking device of the X-direction battery module vehicle to transfer the large-scale offshore photovoltaic steel truss structure to the jacking device of the Y-direction battery module vehicle, remotely controlling the X-direction battery module vehicle to withdraw from the orthogonal track-battery module vehicle transfer block, so as to finish reversing transfer.
5. The method for arranging, transferring and shipping the large-scale offshore photovoltaic steel truss structure assembly sites according to claim 1, wherein the steel bailey temporary trestle is of a repeatedly detachable structure.
6. The method for arranging, transferring and shipping the large-scale offshore photovoltaic steel truss structure assembly sites according to claim 1, wherein the steel truss lifting and transferring tool comprises a lifting truss, an expanded triangular truss and a corner sling, wherein the lifting truss is connected with a crane hook of the floating crane ship through an upper sling, and the expanded triangular truss is connected with a preset lifting point of the large-scale offshore photovoltaic steel truss structure through the corner sling.
7. The method for arranging, transferring and shipping the large-scale offshore photovoltaic steel truss structure assembly sites according to claim 1, wherein pile-inserting steel pipe female openings are fixedly arranged on the widened outwards-extending supporting platforms, and the pile-inserting steel pipe female openings accommodate and fix supporting legs of the large-scale offshore photovoltaic steel truss structure.
8. The method for arranging, unloading and shipping large offshore photovoltaic steel truss structures in a spliced field according to claim 1, wherein the number of the widened overhanging support platforms is 4.

Description

Large offshore photovoltaic steel truss structure assembly site arrangement, transfer and shipping method Technical Field The invention belongs to the technical field of offshore renewable energy sources, and particularly relates to a method for arranging, transferring and shipping large-scale offshore photovoltaic steel truss structure assembled sites. Background Under the promotion of the 'double carbon' target and the ocean economic strategy, the development of the renewable energy sources on the sea in China is continuously accelerated, and the offshore photovoltaic project is gradually expanded from the beach to the offshore area. The large-scale offshore photovoltaic steel truss structure becomes a key supporting structure of an offshore photovoltaic power station, and the single truss size exceeds 35m multiplied by 60m, and has the characteristics of large structure scale, high dead weight and the like. Construction of steel truss structures typically involves multiple links, including onshore assembly, in-field storage, and dock shipping. In the prior art, the assembly process is generally carried out on coastal idle sites or rented wharfs, and all functional areas are distributed according to procedures and depend on a large crawler crane or an automobile crane for hoisting and shifting components. In the transfer stage, a heavy crane is usually adopted to carry out structural transfer in cooperation with a flat car, and a part of the site is paved with temporary rails to move in cooperation with the trolley. The shipping link relies on an existing fixed dock or temporary trestle, utilizes a floating vessel to hoist the structure to a transport vessel, and then is shipped to an offshore installation site. These methods support to some extent the construction of early offshore photovoltaic projects. However, the steel truss mainly faces the following outstanding problems in the assembly-transfer-shipment link: 1. the adaptive wharf has the defects of lack of resources, large-scale steel truss assembly and assembly needs a large number of sites, and the requirement on the water depth of the shipping wharf is high. The offshore suitable development area in China is located in coastal economic zones, the idle wharfs are scarce, wharfs adapting to assembly and delivery of the wharfs are fewer, and even if the wharfs are optional, the renting and transformation costs are high and the period is long. 2. The conflict between the transfer safety and the efficiency is remarkable, the self weight of the steel truss can reach hundred tons, and the precision requirements of the photovoltaic module installation interface and other parts are strict. Traditional automobile crane transportation is easy to cause structural shaking and micro deformation due to uneven grounding pressure, components can be damaged, and improvement of assembly and transfer processes is needed. 3. The dock shipping efficiency is low, offshore construction has strong dependence on a window period, most existing docks need to wait for tide due to insufficient water depth at the front edge, ship loading needs to be aligned for a long time when steel trusses are stacked and roll-on, and single truss shipping consumes more than 12 hours, so that the requirement of large-scale construction can not be met. 4. The shipping ship has poor suitability, limited by the outline dimension of the steel truss, and the shipping ship can only transport a single photovoltaic platform at a time, so that the ship has insufficient loading rate, low transport cost performance and poor economy, and the shipping ship needs to be subjected to suitability transformation so as to improve the transport efficiency. Therefore, the invention provides a method for arranging, transferring and shipping large-scale offshore photovoltaic steel truss structure assembled sites, which is used for solving the problems. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a method for arranging, transferring and shipping a large-scale offshore photovoltaic steel truss structure in a splicing site, so as to solve the problems of low construction efficiency, quality risk and cost increase of the existing large-scale offshore photovoltaic steel truss structure in a splicing-transferring-shipping link. The invention relates to a method for arranging, transferring and shipping large-scale offshore photovoltaic steel truss structures in a spliced field, which comprises the following steps: The method comprises the steps that S1, a large-scale offshore photovoltaic structure construction field is divided into a plurality of shipping fields, wherein the shipping fields are sequentially provided with a single truss chord web member assembly field, an inter-truss chord web member assembly field, a main truss assembly forming field, a purline assembly field, a photovoltaic panel assembly field and a large-scale offshore photovoltaic structure shipping stora