CN114541480B - Steel shell immersed tube assembly precision inspection method and system - Google Patents
Steel shell immersed tube assembly precision inspection method and system Download PDFInfo
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- CN114541480B CN114541480B CN202210455565.3A CN202210455565A CN114541480B CN 114541480 B CN114541480 B CN 114541480B CN 202210455565 A CN202210455565 A CN 202210455565A CN 114541480 B CN114541480 B CN 114541480B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/07—Tunnels or shuttering therefor preconstructed as a whole or continuously made, and moved into place on the water-bed, e.g. into a preformed trench
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The application discloses a method and a system for testing the assembling precision of a steel shell immersed tube, wherein the method for testing the assembling precision of the steel shell immersed tube comprises the following steps: establishing a steel shell immersed tube coordinate system according to the actual axis of the steel shell immersed tube, and obtaining the axis deviation of the steel shell immersed tube through the steel shell immersed tube coordinate system; fitting calculation is carried out on three-dimensional data of fitting measuring points of the end steel shell immersed tube under the steel shell immersed tube coordinate system, and a fitting calculation result of the end steel shell immersed tube is obtained; calculating the design coordinates of the point positions of the embedded parts through the steel shell immersed tube coordinate system, measuring the embedded parts according to the point positions of the embedded parts, and processing the inspection results of the embedded parts after inspecting the measurement results and the design coordinate data to obtain the coordinate deviation of the embedded parts; and according to the preset assembly precision of the steel shell immersed tube, detecting the axis deviation of the steel shell, the fitting calculation result of the end steel shell immersed tube and the coordinate deviation of the embedded part, and obtaining a detection result.
Description
Technical Field
The application relates to the technical field of immersed tube tunnel manufacturing inspection, in particular to a method and a system for inspecting assembly precision of a steel shell immersed tube.
Background
In the island tunnel engineering of the deep-medium channel, the underwater immersed tube is a steel shell concrete type immersed tube, the steel shell immersed tube is manufactured in a sectional type assembling mode, the overall size of the immersed tube steel shell reaches 165m multiplied by 46m multiplied by 10.6m, the internal structure is complex, and the thickness of a panel reaches 40 mm. In the process of manufacturing the steel shell, precision errors are generated in each stage, finally accumulated precision errors directly influence the precision level of floating transportation and sinking operation of the pipe joints, precision control of steel shell manufacturing has important significance on steel shell manufacturing, therefore, all construction design precision indexes of the steel shell sinking pipe are very high, the steel shell manufacturing adopts sectional type assembly manufacturing, and final assembly precision is embodied in the position of each outfitting part of the pipe joints relative to the pipe joints, the angle of the end steel shell and the flatness. Therefore, how to improve the construction precision of the steel shell immersed tube in the manufacturing process of the ultra-large steel shell immersed tube becomes a problem to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a method and a system for testing the splicing precision of a steel shell immersed tube, and at least solves the problems of low manufacturing precision and the like caused by large manufacturing error in the process of manufacturing an ultra-large immersed tube.
The invention provides a method for testing the splicing precision of a steel shell immersed tube, which comprises the following steps:
obtaining the axis deviation of the steel shell immersed tube: establishing a steel shell immersed tube coordinate system according to the actual axis of the steel shell immersed tube, and obtaining the axis deviation of the steel shell immersed tube through the steel shell immersed tube coordinate system;
fitting and measuring the end steel shell immersed tube: fitting calculation is carried out on three-dimensional data of fitting measuring points of the end steel shell immersed tube under the steel shell immersed tube coordinate system, and a fitting calculation result of the end steel shell immersed tube is obtained;
calculating the design coordinates of the point positions of the measuring points of the embedded part through the steel shell immersed tube coordinate system, measuring the embedded part according to the point positions of the measuring points of the embedded part, and processing the inspection result of the embedded part after inspecting the measurement result and the design coordinate data to obtain the coordinate deviation of the embedded part;
the steel shell immersed tube assembling precision inspection step: and according to the preset assembly precision of the steel shell immersed tube, detecting the axis deviation of the steel shell, the fitting calculation result of the end steel shell immersed tube and the coordinate deviation of the embedded part, and obtaining a detection result.
According to the inspection method for the splicing precision of the steel shell immersed tube, a steel shell immersed tube manufacturing coordinate system is established according to a steel shell immersed tube processing production line, and a steel shell immersed tube manufacturing axis is determined according to the steel shell immersed tube manufacturing coordinate system.
The steel shell immersed tube assembling precision inspection method comprises the following steps of:
measuring characteristic points of the end face of the steel shell immersed tube to obtain a plane measurement result, and determining the actual axis of the steel shell immersed tube according to the plane measurement result;
and obtaining the axis deviation of the steel shell immersed tube between the manufacturing axis of the steel shell immersed tube and the actual axis of the steel shell immersed tube through the steel shell immersed tube coordinate system.
The method for testing the assembling precision of the steel shell immersed tube comprises the following steps of:
measuring points are distributed on the central line of the end steel shell immersed tube by using a reflector plate;
measuring to obtain three-dimensional data of the fitting measuring points of the end steel shell immersed tube according to the measuring points;
and converting the three-dimensional data of the end steel shell immersed tube fitting measuring points under the steel shell immersed tube manufacturing coordinate system to the steel shell immersed tube coordinate system for fitting calculation through a coordinate system conversion formula.
The method for testing the splicing precision of the steel shell immersed tube comprises the following steps of:
measuring a steel shell immersed tube angular point, and laying a measuring point position of the embedded part on the steel shell immersed tube angular point;
and calculating the design coordinates of the point positions of the measuring points of the embedded part by using the steel shell immersed tube coordinate system to obtain the design coordinate data.
The method for testing the splicing precision of the steel shell immersed tube comprises the following steps of:
the steel shell immersed tube control mesh points are rotated to the top surface of the tube section;
and obtaining the measurement result according to the relative position of the embedded part and the pipe joint by measuring the point position of the measuring point of the embedded part.
The method for testing the splicing precision of the steel shell immersed tube comprises the following steps of:
and checking the measurement result and the design coordinate data to obtain an embedded part checking result, and if the embedded part checking result is deviated from the design coordinate data, re-measuring the relative position of the embedded part and the pipe joint.
The method for testing the splicing precision of the steel shell immersed tube comprises the following steps of:
and converting the embedded part inspection result under the steel shell immersed tube manufacturing coordinate into the steel shell immersed tube coordinate system through the coordinate system conversion formula to obtain the embedded part coordinate deviation.
The method for testing the assembling precision of the steel shell immersed tube comprises the following steps:
presetting the assembly precision of the steel shell immersed tube;
and correspondingly processing the steel shell immersed tube according to the inspection result.
The invention also provides a system for testing the assembly precision of the steel shell immersed tube, which is suitable for the method for testing the assembly precision of the steel shell immersed tube, and the system for testing the assembly precision of the steel shell immersed tube comprises:
the steel shell immersed tube axis deviation obtaining unit: establishing a steel shell immersed tube coordinate system according to the actual axis of the steel shell immersed tube, and obtaining the axis deviation of the steel shell immersed tube through the steel shell immersed tube coordinate system;
end steel shell immersed tube fitting measurement unit: fitting calculation is carried out on three-dimensional data of fitting measuring points of the end steel shell immersed tube under the steel shell immersed tube coordinate system, and a fitting calculation result of the end steel shell immersed tube is obtained;
the embedded part inspection unit is used for calculating the design coordinates of the point positions of the embedded part measuring points through the steel shell immersed tube coordinate system, measuring the embedded part according to the point positions of the embedded part measuring points, inspecting the measuring result and the design coordinate data, and processing the inspection result of the embedded part to obtain the coordinate deviation of the embedded part;
the steel shell immersed tube assembling precision inspection unit comprises: and according to the preset assembly precision of the steel shell immersed tube, detecting the axis deviation of the steel shell, the fitting calculation result of the end steel shell immersed tube and the coordinate deviation of the embedded part, and obtaining a detection result.
Compared with the prior art, the method and the system for testing the splicing precision of the steel shell immersed tube, provided by the invention, have the advantages that in order to master the manufacturing axis deviation of the steel shell immersed tube, the linear relation between the end steel shell immersed tube fitting surface and the actual axis of the steel shell immersed tube and the relation between the tube top fitting-out piece and the end surface and the axis of the steel shell immersed tube, a steel shell coordinate system is established by taking the actual axis of the steel shell as the direction, and the real fitting deflection angle is reflected; the control network established by the steel shell immersed tube manufacturing is all on the ground, an instrument is erected on a control point, the instrument cannot be seen through the embedded part on the top of the tube, the embedded part needs to be measured from the turning point to the top surface of the tube section, the measurement of the embedded part from the head to the tail is taken as a rechecking condition, 2 points are turned on the top surfaces of the head and the tail of the tube section, the position measurement accuracy of the embedded part is improved, and when the total station instrument collects the actual position data of the embedded part, a small prism is used for collecting the data, the collected data are subjected to preliminary difference comparison on site, abnormal data are remeasured, and the accuracy of the total station instrument for obtaining the data is ensured; and (3) according to the known control points of the steel shell manufacturing, acquiring three-dimensional data of end steel shell immersed tube fitting measuring points by using a total station, converting the three-dimensional data of the end steel shell immersed tube fitting measuring points in a steel shell manufacturing coordinate system into a steel shell coordinate system, and performing fitting calculation to obtain data related to the angle and the flatness of the end steel shell immersed tube.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of a method for testing the assembly precision of a steel shell immersed tube according to an embodiment of the application;
FIG. 2 is a schematic diagram of a steel-shell immersed tube manufacturing coordinate system according to an embodiment of the application;
FIG. 3 is a schematic diagram of the distribution of characteristic points on the end face of a steel-shell immersed tube according to the embodiment of the application;
FIG. 4 is a schematic diagram of the actual axis of a steel shell immersed tube according to an embodiment of the application;
FIG. 5 is a schematic diagram of a steel shell caisson coordinate system according to an embodiment of the present application;
FIG. 6 is a schematic diagram of arrangement of measuring points for end steel shell immersed tube fitting measurement according to the embodiment of the application;
FIG. 7 is a schematic diagram of end steel shell caisson fit measurements according to an embodiment of the present application;
FIG. 8 is a schematic illustration of embedment position according to an embodiment of the present application;
FIG. 9 is a diagram illustrating guide bar point location and guide bracket point location placement according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of the steel-shell immersed tube assembly precision inspection system of the invention.
Wherein the reference numerals are:
the steel shell immersed tube axis deviation obtaining unit: 51;
end steel shell immersed tube fitting measurement unit: 52;
an embedded part inspection unit: 53;
the steel shell immersed tube assembling precision inspection unit comprises: 54.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that such a development effort might be complex and tedious, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as a limitation of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
According to the invention, by comparing the design positions, establishing a steel shell immersed tube joint coordinate system, measuring the point location layout of the outfitting piece and the end steel shell and checking the angle and the flatness of the end steel shell, the precision error generated in the steel shell manufacturing process is reduced, and the precision level and the working efficiency of the floating transportation and sinking operation of the tube joint are improved.
The present invention will be described with reference to specific examples.
Example one
The embodiment provides a method for testing the splicing precision of a steel shell immersed tube. Referring to fig. 1 to 9, fig. 1 is a flowchart of a method for testing assembly accuracy of a steel-shell immersed tube according to an embodiment of the present application; FIG. 2 is a schematic diagram of a steel shell manufacturing coordinate system according to an embodiment of the present application; FIG. 3 is a schematic diagram of the distribution of characteristic points of the end face of the steel shell according to the embodiment of the application; FIG. 4 is a schematic view of the actual axis of the steel can according to an embodiment of the present application; FIG. 5 is a schematic illustration of a steel can coordinate system according to an embodiment of the present application; FIG. 6 is a schematic diagram of arrangement of end steel shell fitting measurement points according to an embodiment of the application; FIG. 7 is a schematic diagram of end steel shell fit measurements according to an embodiment of the present application; fig. 8 is a schematic illustration of embedment position according to an embodiment of the present application; fig. 9 is a point location layout diagram of a guide rod and a guide bracket according to an embodiment of the present application, and as shown in fig. 1 to 9, the method for testing the assembly accuracy of the steel-shell immersed tube includes the following steps:
obtaining the axis deviation of the steel shell immersed tube in the step S1: establishing a steel shell immersed tube coordinate system according to the actual axis of the steel shell immersed tube, and obtaining the axis deviation of the steel shell immersed tube through the steel shell immersed tube coordinate system;
end steel shell immersed tube fitting measurement step S2: fitting calculation is carried out on three-dimensional data of fitting measuring points of the end steel shell immersed tube under the steel shell immersed tube coordinate system, and a fitting calculation result of the end steel shell immersed tube is obtained;
an embedded part inspection step S3, calculating the design coordinates of the point location of the embedded part through a steel shell immersed tube coordinate system, measuring the embedded part according to the point location of the embedded part, inspecting the measurement result and the design coordinate data, and processing the inspection result of the embedded part to obtain the coordinate deviation of the embedded part;
and a steel shell immersed tube assembling precision inspection step S4: and according to the preset assembly precision of the steel shell immersed tube, detecting the axis deviation of the steel shell, the fitting calculation result of the end steel shell immersed tube and the coordinate deviation of the embedded part, and obtaining a detection result.
In an embodiment, the steel shell immersed tube axis deviation obtaining step S1 includes:
establishing a steel shell immersed tube manufacturing coordinate system according to a steel shell immersed tube processing production line, and determining a steel shell immersed tube manufacturing axis through the steel shell immersed tube manufacturing coordinate system;
measuring characteristic points of the end face of the steel shell immersed tube to obtain a plane measurement result, and determining the actual axis of the steel shell immersed tube according to the plane measurement result;
and obtaining the axis deviation of the steel shell immersed tube between the manufacturing axis of the steel shell immersed tube and the actual axis of the steel shell immersed tube through a steel shell immersed tube coordinate system.
In the specific implementation, a steel shell immersed tube manufacturing coordinate system is established according to a steel shell immersed tube processing production line, namely an independent coordinate system is established; the construction coordinate system of the production line takes the steel shell gallery axis pointing to the pushing direction as an X coordinate axis, a Y coordinate axis is established by a left-hand method, and the origin of coordinates O is at the initial line of the steel shell manufacturing production line;
in order to master the deviation of the manufacturing axis of the steel shell, the linear relation between the fitting surface of the end steel shell and the actual axis of the steel shell and the relation between the pipe top fitting-out piece and the end surface and the axis of the steel shell, and facilitate the reflection of the real fitting deflection angle, a steel shell coordinate system is established by taking the actual axis of the steel shell as the direction;
the axis of the steel shell is determined according to the plane measurement result of the characteristic point of the end face of the steel shell, and the axis of the full scale model is determined according to the plane measurement result of the characteristic point of the end face of the full scale model; in fig. 3, S represents the head end, i.e., the GINA end is defined as the head end, and W represents the tail end, i.e., the non-GINA end is defined as the tail end;
the method for determining the actual axis of the steel shell immersed tube comprises the following steps: taking a midpoint S16 of symmetrical characteristic points S1 and S6, a midpoint S27 of symmetrical characteristic points S2 and S7, a midpoint S38 of symmetrical characteristic points S3 and S8, a midpoint S49 of symmetrical characteristic points S4 and S9, and a midpoint S38 of symmetrical characteristic points S5 and S10 of the head end face, then taking midpoints S-M of points S16, S27, S38, S49 and S510, and obtaining a point W-M (W tail end) in the same way, wherein the connecting line of the two points is the actual axis of the steel shell sinking pipe;
taking the projection of the actual axis of the steel shell on the top surface of the steel shell as an x-axis, taking the direction pointing to the GINA end as the positive direction of the x-axis, and taking the intersection point of the x-axis and the steel shell at the head end projected to the top surface of the steel shell as an origin O; establishing a y coordinate axis by using a left-hand rule, taking a line perpendicular to the xoy plane through an original point O as a z axis, and taking an upward direction as the positive direction of the z axis; taking the design elevation of the bottom surface of the steel shell as an elevation reference of a steel shell coordinate system; setting XOY as a steel shell coordinate system, XOY as a construction coordinate system, Xp and Yp as coordinates of a point P in the steel shell coordinate system, Xp and Yp as coordinates of the point P in the construction coordinate system, a and b as coordinates of an original point O of the steel shell coordinate system in the construction coordinate system, and alpha as a rotation angle of an X axis of the steel shell coordinate system relative to an X axis of the construction coordinate system, wherein clockwise is positive and counterclockwise is negative; the calculation formula of the steel shell immersed tube coordinate system converted to the model coordinate system, namely the steel shell immersed tube coordinate system, is as follows:
in an embodiment, the end-hat dip tube fitting measurement step S2 includes:
measuring points are distributed on the central line of the end steel shell immersed tube by using a reflector plate;
measuring to obtain three-dimensional data of fitting measuring points of the end steel shell immersed tube according to the measuring points;
and (3) converting three-dimensional data of end steel shell immersed tube fitting measuring points under the steel shell immersed tube manufacturing coordinate system into a steel shell immersed tube coordinate system through a coordinate system conversion formula, and performing fitting calculation.
In the specific implementation, 107 measuring points are distributed on the center line of the end steel shell immersed tube of each end face by using a self-adhesive reflector plate, the two end faces have 214 measuring points, the measuring points are based on the actual distribution quantity, and the measuring point interval is 1 m;
in a steel shell manufacturing site, manufacturing known control points according to a steel shell, and acquiring three-dimensional data of end steel shell immersed tube fitting measuring points by using a total station, wherein characteristic points need to be measured by a left disc and a right disc and a survey is performed on the other points by a left disc;
the data of field measurement, namely three-dimensional data of the fitting measuring points of the end steel shell immersed tube are in a steel shell manufacturing coordinate system, in order to know the relationship between the end steel shell end surface deflection angle and the actual axis, the steel shell manufacturing coordinate system is converted into the steel shell coordinate system, and then the coordinates in the steel shell coordinate system are used for fitting calculation, so that the following inspection contents are obtained:
the maximum distance from the end face vertical deflection angle, the end face horizontal deflection angle and the measuring point to the fitting plane is the maximum deviation of the unevenness;
wherein, the flatness and deflection angle measuring conditions of the end steel shell immersed tube are as follows:
1) the steel shell immersed tube is greatly influenced by temperature illumination and deformed, and the temperature is measured at about 26 ℃ in the later night after the observation environment is selected;
2) the reflector plate is ensured to be clean and tidy, direct light cannot be emitted in the direction of the instrument, and the occurrence of rough errors is avoided;
3) the steel shell is cleared up in advance to influence the sheltering object of measuring the sight, such as scaffold, equipment, guardrail and the like.
In an embodiment, the embedment inspecting step S3 includes:
measuring the steel shell immersed tube angular point, and laying the embedded part measuring point positions on the steel shell immersed tube angular point;
calculating the design coordinates of the point positions of the measuring points of the embedded part by using a steel shell immersed tube coordinate system to obtain design coordinate data;
the steel shell immersed tube control mesh points are rotated to the top surface of the tube section;
obtaining a measurement result according to the relative position of the embedded part and the pipe joint by measuring the point position of the measuring point of the embedded part;
testing the measurement result and the design coordinate data to obtain a testing result of the embedded part, and if the testing result of the embedded part has deviation from the design coordinate data, re-measuring the relative position of the embedded part and the pipe joint;
and converting the embedded part inspection result under the steel shell immersed tube manufacturing coordinate into a steel shell immersed tube coordinate system through a coordinate system conversion formula to obtain the embedded part coordinate deviation.
In the concrete implementation, in the embedded part inspection process, the pipe top key embedded parts to be inspected comprise: the device comprises a pulling-in pedestal, buttresses, hoisting points, a manhole, a guide support and a guide bracket embedded part; on a design drawing, calculating design coordinates of each measuring point by using a steel shell immersed tube coordinate system, and uniformly correcting the design coordinates by using a constant according to an original point X coordinate measured on site;
the control network established by the steel shell immersed tube manufacturing is all on the ground, and an instrument is erected at a control point and cannot be seen through the embedded part at the top of the tube, so that the measurement of the embedded part at the head and the tail is taken as a rechecking condition, 2 points are required to be rotated on the top surfaces of the head and the tail of the tube section, and then the embedded part is measured; most of the measuring points of the embedded parts are located at angular point positions, when the positions of the embedded parts and the related pipe joints are measured, the total station uses a small prism when data are collected, after the data are collected, difference value comparison is carried out on site preliminarily, abnormal data are measured again, and the accuracy of the total station for obtaining the data is ensured; after the measurement is finished, detecting whether the relative position relation of the ground control network points is accurate or not through the distance measurement and angle measurement of the total station, and ensuring that the station is normally set in the retest process of the whole embedded part;
converting the manufacturing coordinates of the embedded part steel shell actually measured on site into a steel shell coordinate system, then comparing difference values, and checking whether the coordinate deviation of the embedded part meets the design requirements;
the precautions when inspecting the embedded parts are as follows:
1) when the end steel shell panel is measured, the horizontal deflection angle measured by an instrument is not too large, the same end surface measuring point is preferably completed by two measuring stations together, and a plurality of characteristic points are superposed for checking;
2) the steel shell measurement operation time period in the high-temperature season is selected to be carried out on cloudy days or at night;
3) the surface of the end steel shell end face reflector needs to be kept dry and clean, and the reflector needs to be checked one by one before measurement, particularly after rain.
In an embodiment, the step S4 of inspecting the assembling precision of the steel-shelled immersed tube includes:
presetting the assembly precision of the steel shell immersed tube;
and carrying out corresponding treatment on the steel shell immersed tube according to the inspection result.
Example two
And when fitting calculation is carried out on the three-dimensional data of the fitting measuring points of the steel shell immersed tube at the lower end of the steel shell coordinate system, MATLAB software is used for fitting the measured result, and after the fitting calculation is finished, the vertical deflection angle of the end surface of the steel shell immersed tube, the horizontal deflection angle of the end surface and the maximum distance from the measuring points to the fitting plane are obtained.
EXAMPLE III
Referring to fig. 10, fig. 10 is a schematic structural diagram of a steel-shell immersed tube assembly precision inspection system of the present invention. As shown in fig. 10, the system for testing the assembly accuracy of the steel shell immersed tube is suitable for the method for testing the assembly accuracy of the steel shell immersed tube, and comprises:
the steel shell immersed tube axis deviation obtaining unit 51: establishing a steel shell immersed tube coordinate system according to the actual axis of the steel shell immersed tube, and obtaining the axis deviation of the steel shell immersed tube through the steel shell immersed tube coordinate system;
end steel shell immersed tube fitting measurement unit 52: fitting calculation is carried out on three-dimensional data of fitting measuring points of the end steel shell immersed tube under the steel shell immersed tube coordinate system, and a fitting calculation result of the end steel shell immersed tube is obtained;
the embedded part inspection unit 53 is used for calculating the design coordinates of the point positions of the embedded part measuring points through a steel shell immersed tube coordinate system, measuring the embedded part according to the point positions of the embedded part measuring points, inspecting the measuring result and the design coordinate data, and processing the inspection result of the embedded part to obtain the coordinate deviation of the embedded part;
the steel shell immersed tube assembling precision inspection unit 54: and according to the preset steel shell immersed tube assembling precision, detecting the axis deviation of the steel shell, the end steel shell fitting calculation result and the embedded part coordinate deviation to obtain a detection result.
In conclusion, the position, the end steel shell angle and the flatness of the pipe joint outfitting piece relative to the pipe joint can reflect the assembling precision of the ultra-large steel shell immersed tube, so that the position, the end steel shell angle and the flatness of the pipe joint outfitting piece relative to the pipe joint are tested, the precision error generated in the manufacturing process of the ultra-large immersed tube is reduced, and the manufacturing precision of the steel shell immersed tube is improved.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the protection scope of the appended claims.
Claims (3)
1. A method for testing the assembling precision of a steel shell immersed tube is characterized by comprising the following steps:
obtaining the axis deviation of the steel shell immersed tube: establishing a steel shell immersed tube coordinate system according to the actual axis of the steel shell immersed tube, and obtaining the axis deviation of the steel shell immersed tube through the steel shell immersed tube coordinate system;
wherein, the steel shell immersed tube axis deviation obtaining step comprises:
establishing a steel shell immersed tube manufacturing coordinate system according to a steel shell immersed tube processing production line, and determining a steel shell immersed tube manufacturing axis through the steel shell immersed tube manufacturing coordinate system;
measuring the characteristic points of the end face of the steel shell immersed tube to obtain a plane measurement result, and determining the actual axis of the steel shell immersed tube according to the plane measurement result, wherein the method for determining the actual axis of the steel shell immersed tube comprises the following steps: taking a midpoint S16 of symmetrical characteristic points S1 and S6, a midpoint S27 of symmetrical characteristic points S2 and S7, a midpoint S38 of symmetrical characteristic points S3 and S8, a midpoint S49 of symmetrical characteristic points S4 and S9, and a midpoint S38 of symmetrical characteristic points S5 and S10 of the head end face, then taking midpoints S-M of points S16, S27, S38, S49 and S510, and obtaining a point W-M (W tail end) in the same way, wherein the connecting line of the two points is the actual axis of the steel shell sinking pipe; taking the projection of the actual axis of the steel shell on the top surface of the steel shell as an x-axis, taking the direction pointing to the GINA end as the positive direction of the x-axis, and taking the intersection point of the x-axis and the steel shell at the head end projected to the top surface of the steel shell as an origin O; establishing a y coordinate axis by using a left-hand rule, taking a line perpendicular to the xoy plane through an original point O as a z axis, and taking an upward direction as the positive direction of the z axis; taking the design elevation of the bottom surface of the steel shell as an elevation reference of a steel shell coordinate system; setting XOY as a steel shell coordinate system, XOY as a construction coordinate system, Xp and Yp as coordinates of a point P in the steel shell coordinate system, Xp and Yp as coordinates of the point P in the construction coordinate system, a and b as coordinates of an original point O of the steel shell coordinate system in the construction coordinate system, and alpha as a rotation angle of an X axis of the steel shell coordinate system relative to an X axis of the construction coordinate system, wherein clockwise is positive and counterclockwise is negative; converting a steel shell immersed tube manufacturing coordinate system into a model coordinate system, wherein the conversion formula is as follows:
obtaining the axis deviation of the steel shell immersed tube between the manufacturing axis of the steel shell immersed tube and the actual axis of the steel shell immersed tube through the steel shell immersed tube coordinate system;
end steel shell immersed tube fitting measurement: fitting calculation is carried out on three-dimensional data of fitting measuring points of the end steel shell immersed tube under the steel shell immersed tube coordinate system, and a fitting calculation result of the end steel shell immersed tube is obtained;
wherein, the end steel shell immersed tube fitting measurement step comprises:
measuring points are distributed on the central line of the end steel shell immersed tube by using a reflector plate;
measuring to obtain three-dimensional data of the fitting measuring points of the end steel shell immersed tube according to the measuring points;
the method comprises the steps of preparing three-dimensional data of end steel shell immersed tube fitting measuring points under a coordinate system by the steel shell immersed tube through a coordinate system conversion formula, converting the three-dimensional data of the end steel shell immersed tube fitting measuring points under the coordinate system of the steel shell immersed tube, and performing fitting calculation, wherein when the three-dimensional data of the end steel shell immersed tube fitting measuring points at the lower end of the steel shell coordinate system are subjected to fitting calculation, MATLAB software is used for fitting measured results, and after the fitting calculation is finished, the vertical deflection angle of the end surface of the steel shell immersed tube, the horizontal deflection angle of the end surface and the maximum distance from the measuring points to a fitting plane are obtained;
calculating the design coordinates of the point positions of the measuring points of the embedded part through the steel shell immersed tube coordinate system, measuring the embedded part according to the point positions of the measuring points of the embedded part, and processing the inspection result of the embedded part after inspecting the measurement result and the design coordinate data to obtain the coordinate deviation of the embedded part;
wherein, the embedded part inspection step comprises:
measuring a steel shell immersed tube angular point, and laying a measuring point position of the embedded part on the steel shell immersed tube angular point;
calculating the design coordinates of the point positions of the measuring points of the embedded part by using the steel shell immersed tube coordinate system to obtain the design coordinate data;
the steel shell immersed tube control net points are rotated to the top surface of the tube joint;
obtaining the measurement result according to the relative position of the embedded part and the pipe joint by measuring the point position of the measuring point of the embedded part;
checking the measurement result and the design coordinate data to obtain an embedded part checking result, and if the embedded part checking result is deviated from the design coordinate data, re-measuring the relative position of the embedded part and the pipe joint;
converting the embedded part inspection result under the steel shell immersed tube manufacturing coordinate into the steel shell immersed tube coordinate system through the coordinate system conversion formula to obtain the embedded part coordinate deviation;
the steel shell immersed tube assembling precision inspection step: and according to the preset assembly precision of the steel shell immersed tube, detecting the axis deviation of the steel shell, the fitting calculation result of the end steel shell immersed tube and the coordinate deviation of the embedded part to obtain a detection result, and processing the steel shell immersed tube according to the detection result.
2. The method for inspecting the assembly accuracy of the steel shell immersed tube according to claim 1, wherein the step of inspecting the assembly accuracy of the steel shell immersed tube comprises the following steps:
presetting the assembly precision of the steel shell immersed tube;
and correspondingly processing the steel shell immersed tube according to the inspection result.
3. The utility model provides a precision test system is assembled to box hat immersed tube which characterized in that, the precision test system is assembled to the box hat immersed tube includes:
the steel shell immersed tube axis deviation obtaining unit: establishing a steel shell immersed tube coordinate system according to the actual axis of the steel shell immersed tube, and obtaining the axis deviation of the steel shell immersed tube through the steel shell immersed tube coordinate system;
wherein, the steel-shell immersed tube axis deviation obtaining unit comprises:
establishing a steel shell immersed tube manufacturing coordinate system according to a steel shell immersed tube processing production line, and determining a steel shell immersed tube manufacturing axis through the steel shell immersed tube manufacturing coordinate system;
measuring the characteristic points of the end face of the steel shell immersed tube to obtain a plane measurement result, and determining the actual axis of the steel shell immersed tube according to the plane measurement result, wherein the method for determining the actual axis of the steel shell immersed tube comprises the following steps: taking a midpoint S16 of symmetrical characteristic points S1 and S6, a midpoint S27 of symmetrical characteristic points S2 and S7, a midpoint S38 of symmetrical characteristic points S3 and S8, a midpoint S49 of symmetrical characteristic points S4 and S9, and a midpoint S38 of symmetrical characteristic points S5 and S10 of the head end face, then taking midpoints S-M of points S16, S27, S38, S49 and S510, and obtaining a point W-M (W tail end) in the same way, wherein the connecting line of the two points is the actual axis of the steel shell sinking pipe; taking the projection of the actual axis of the steel shell on the top surface of the steel shell as an x-axis, taking the direction pointing to the GINA end as the positive direction of the x-axis, and taking the intersection point of the x-axis and the steel shell at the head end projected to the top surface of the steel shell as an origin O; establishing a y coordinate axis by using a left-hand rule, taking a line perpendicular to the xoy plane through an original point O as a z axis, and taking an upward direction as the positive direction of the z axis; taking the design elevation of the bottom surface of the steel shell as an elevation reference of a steel shell coordinate system; setting XOY as a steel shell coordinate system, XOY as a construction coordinate system, Xp and Yp as coordinates of a point P in the steel shell coordinate system, Xp and Yp as coordinates of the point P in the construction coordinate system, a and b as coordinates of an original point O of the steel shell coordinate system in the construction coordinate system, and alpha as a rotation angle of an X axis of the steel shell coordinate system relative to an X axis of the construction coordinate system, wherein clockwise is positive and counterclockwise is negative; converting a steel shell immersed tube manufacturing coordinate system into a model coordinate system, wherein the conversion formula is as follows:
obtaining the axis deviation of the steel shell immersed tube between the manufacturing axis of the steel shell immersed tube and the actual axis of the steel shell immersed tube through the steel shell immersed tube coordinate system;
end steel shell immersed tube fitting measurement unit: fitting calculation is carried out on three-dimensional data of fitting measuring points of the end steel shell immersed tube under the steel shell immersed tube coordinate system, and a fitting calculation result of the end steel shell immersed tube is obtained;
wherein, end steel-shelled immersed tube fitting measuring unit includes:
measuring points are distributed on the central line of the end steel shell immersed tube by using a reflector plate;
measuring to obtain three-dimensional data of the fitting measuring points of the end steel shell immersed tube according to the measuring points;
the method comprises the steps of preparing three-dimensional data of end steel shell immersed tube fitting measuring points under a coordinate system by the steel shell immersed tube through a coordinate system conversion formula, converting the three-dimensional data of the end steel shell immersed tube fitting measuring points under the coordinate system of the steel shell immersed tube, and performing fitting calculation, wherein when the three-dimensional data of the end steel shell immersed tube fitting measuring points at the lower end of the steel shell coordinate system are subjected to fitting calculation, MATLAB software is used for fitting measured results, and after the fitting calculation is finished, the vertical deflection angle of the end surface of the steel shell immersed tube, the horizontal deflection angle of the end surface and the maximum distance from the measuring points to a fitting plane are obtained;
the embedded part inspection unit is used for calculating the design coordinates of the point positions of the embedded part measuring points through the steel shell immersed tube coordinate system, measuring the embedded part according to the point positions of the embedded part measuring points, inspecting the measuring result and the design coordinate data, and processing the inspection result of the embedded part to obtain the coordinate deviation of the embedded part;
wherein, built-in fitting test unit includes:
measuring a steel shell immersed tube angular point, and laying a measuring point position of the embedded part on the steel shell immersed tube angular point;
calculating the design coordinates of the point positions of the measuring points of the embedded part by using the steel shell immersed tube coordinate system to obtain the design coordinate data;
the steel shell immersed tube control mesh points are rotated to the top surface of the tube section;
obtaining the measurement result according to the relative position of the embedded part and the pipe joint by measuring the point position of the measuring point of the embedded part;
checking the measurement result and the design coordinate data to obtain an embedded part checking result, and if the embedded part checking result is deviated from the design coordinate data, re-measuring the relative position of the embedded part and the pipe joint;
converting the embedded part inspection result under the steel shell immersed tube manufacturing coordinate into the steel shell immersed tube coordinate system through the coordinate system conversion formula to obtain the embedded part coordinate deviation;
the steel shell immersed tube assembling precision inspection unit comprises: and according to the preset assembly precision of the steel shell immersed tube, detecting the axis deviation of the steel shell, the fitting calculation result of the end steel shell immersed tube and the coordinate deviation of the embedded part to obtain a detection result, and processing the steel shell immersed tube according to the detection result.
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| CN115248949B (en) * | 2022-09-22 | 2023-02-03 | 中交第一航务工程局有限公司 | End steel shell linearity evaluation method and system |
| CN116147596B (en) * | 2023-04-21 | 2023-06-27 | 中交第一航务工程局有限公司 | Left-right lane penetration measuring method for immersed tunnel |
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