CN102175109A - Installation measurement method of multi-leg pole modular deck sheet - Google Patents

Abstract

The invention discloses a method for installing and measuring a multi-leg column module deck plate, which comprises the following steps: (1) establishing a reference coordinate system of the deck plate; (2) selecting a module key measurement point for measuring the spatial position coordinates of each leg column of the deck plate and The relative coordinate system is established with the key measurement point of the module as the coordinate origin, and the coordinate position of the key measurement point of each module in the reference coordinate system of the deck plate is determined; (3) the measurement device can measure the key measurement point of each module through the measurement device (4) the relative coordinates of the spatial positions of each leg column of the deck piece are converted into coordinates in the reference coordinate system of the deck piece through the coordinate conversion relationship determined in step (2) Thereby obtaining the mounting position of the leg post. By adopting the method, high-precision measurement data of leg columns can be obtained, and the size and deformation accuracy of the structure during the construction process, as well as the matching accuracy and overall error accuracy during the final assembly process of the structure can be guaranteed.

Description

Installation measurement method of multi-leg column module deck sheet

technical field

The invention relates to an installation measurement method, in particular to a multi-leg column module deck sheet installation measurement method.

Background technique

In offshore oil development projects, various platforms such as oil production platforms, living platforms, and central processing platforms need to be built offshore. The platform generally mainly includes: marine engineering blocks, underwater support structures - jackets, single points and other marine structures. Offshore engineering blocks, jackets, single points, etc. are commonly referred to as offshore structures. Marine structures generally have the characteristics of heavy weight, many structures, and complex construction. As the weight and volume of structures continue to increase, the construction process of structures requires layered and block-by-block construction. This method can effectively shorten the construction period, improve production efficiency, and reduce many risk factors in the layer-by-layer construction of modules, such as (working at heights, etc.).

In the process of building structures in layers and blocks, the layered deck blocks need to be supported by corresponding columns and legs during the construction process to ensure the shape of the deck and the installation position of each component. During the installation process of this multi-leg column modular deck sheet, due to the huge structure and many obstacles, it is very difficult to measure the position of each leg column of the structure. The legs support and position the deck. Each leg plays a very important role in the weight support of the structure and the positioning of the components. The deviation of the position of the legs will cause the local displacement of the deck to change and lead to individual Inaccurate component positioning, these problems will eventually lead to deviations in the overall assembly of the structure.

Most of the existing measurement methods use simultaneous measurement of multiple base stations or multiple measurements of a single base station. That is, the position of each leg column is directly measured through an external base station, and then these measurement data are integrated to obtain the actual position information of each leg column. This method is ideal when there are few legs, but when the number of legs is large, the measurement data of a limited number of base stations is very limited. None of these methods can measure the positions of dozens of leg posts with high precision.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a high-precision leg column measurement data, to ensure the size and deformation accuracy of the structure during the construction process, as well as the matching accuracy and overall error of the structure during the final assembly process Accuracy measurement method for multi-leg column modular deck sheet installations.

The multi-leg column module deck piece installation measuring method of the present invention, it comprises the following steps:

(1) Establish the datum coordinate system of the deck plate;

(2) Select the key measurement point of the module for measuring the spatial position coordinates of each leg column of the deck piece and establish a relative coordinate system with the key measurement point of the module as the coordinate origin, and determine the coordinates of the key measurement point of each module in the reference coordinate system of the deck piece Location;

(3) measure the spatial position relative coordinates of each leg column of the deck plate that the measuring device can measure at each module key measuring point by the measuring device;

(4) The relative coordinates of the spatial positions of each leg column of the deck piece are converted into coordinates in the reference coordinate system of the deck piece through the coordinate conversion relationship determined in step (2) to obtain the installation position of the leg column.

The outstanding advantages of the present invention are: adopt this method to transfer the design reference of each component of the module to the relative coordinate system established with the key measurement point of the module as the coordinate origin, and use a large number of reference points in space to measure the spatial position of each leg column of the module deck , so as to obtain high-precision leg column measurement data, ensure the size and deformation accuracy of the structure during the construction process, thereby ensuring the fit accuracy and overall error accuracy during the final assembly process of the structure.

Description of drawings

Accompanying drawing is the measurement working principle diagram of the multi-leg column module deck sheet installation measurement method of the present invention.

Detailed ways

Below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention will be further described:

The method for installing and measuring the multi-leg column module deck of the present invention comprises the following steps: (1) establishing a reference coordinate system 1 of the deck; (2) selecting a module key measurement point 2 for measuring the spatial position coordinates of each leg column of the deck And set up a relative coordinate system with the module key measurement point as the coordinate origin, determine the coordinate position of each module key measurement point in the reference coordinate system of the deck plate; (3) measure the described at each module key measurement point by measuring device The relative coordinates of the spatial position of each leg column 3 of the deck piece that the measuring device can measure; Coordinates in the coordinate system to obtain the installation position of the leg column.

Example 1

To measure the position coordinates of the multi-leg column on the deck of the multi-leg column module, the following steps are adopted:

(1) Establish the reference coordinate system of the deck plate; (2) Select the key measurement point of the module for measuring the spatial position coordinates of each leg column of the deck plate and use the key measurement point of the module as the coordinate origin to establish a relative coordinate system to determine the key measurement of each module The coordinate position of the point in the reference coordinate system of the deck sheet; (3) measure the spatial position relative coordinates of each leg column of the deck sheet that the measuring device can measure at each module key measurement point by the measuring device; (4) The relative coordinates of the spatial positions of each leg column of the deck sheet are converted into coordinates in the reference coordinate system of the deck sheet through the coordinate conversion relationship determined in step (2) to obtain the installation position of the leg column.

This method is used to measure the spatial position of each leg column of the module deck, obtain the measurement data of each leg column, and ensure the installation accuracy of the multi-leg column in the deck section during the construction process, thus ensuring the matching accuracy and overall integrity of the structure during the final assembly process. error precision.

Claims (1)

1. The multi-leg column module deck piece installation measurement method is characterized in that it comprises the following steps: (1) Establish the datum coordinate system of the deck plate; (2) Select the key measurement point of the module for measuring the spatial position coordinates of each leg column of the deck piece and establish a relative coordinate system with the key measurement point of the module as the coordinate origin, and determine the coordinates of the key measurement point of each module in the reference coordinate system of the deck piece Location; (3) measure the spatial position relative coordinates of each leg column of the deck plate that the measuring device can measure at each module key measuring point by the measuring device; (4) The relative coordinates of the spatial positions of each leg column of the deck piece are converted into coordinates in the reference coordinate system of the deck piece through the coordinate conversion relationship determined in step (2) to obtain the installation position of the leg column.

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