Installation method for final joint of immersed tunnel

Abstract

This application relates to a method for installing a final joint of an immersed tunnel, which belongs to the field of construction of a final joint. The installation method includes setting a first coordinate system, locating feature points, and +2 Attach the pipe fitting and +1 The steps include attaching the pipe joint and pushing out the jack segment, among which the first coordinate system is N +3 Set at the end of the pipe fitting, N +1 At the tip end of the pipe joint, there is a piercing point N +1 S, N +1 Place W, place penetration points DS and DW on the jack segment, and place N +2 At the tip end of the pipe joint, there is a piercing point N +2 S, N +2 W is placed, and piercing points DS, DW, and N +1 S, N +1 W, N +2 S, N +2 The coordinates in the first coordinate system of W are calculated respectively. This mounting method can improve the mounting accuracy of the final joint and is easy to operate.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from a Chinese patent application filed with the China Patent Office on July 26, 2023, application number 202310921919.3, for the invention "Method for installing final joint of immersed tunnel," the entire contents of which are incorporated herein by reference.

[0002] The present application belongs to the technical field of final joints, and in particular to a method of installing final joints for immersed tunnels. [Background technology]

[0003] In order to shorten the construction period, immersed tunnels are usually constructed simultaneously from both ends of the tunnel length, and the final joint is then used to connect the pipe joints attached to both ends to achieve the final joint of the tunnel. The pipe joint installation sequence is as shown in Figure 1, and the immersed tunnel joint entrance is N +1 Pipe fittings and N +2 Designed between pipe fittings, among which N +1 A jack segment is installed inside the end of the pipe joint. +2 Install the pipe fittings, then +1 Install the pipe fittings and jack segments, +1 After the pipe joint and jack segment have settled, lift the jack segment +1 Pipe fitting to N +2 Push the jack segment toward the pipe joint and +2 By completing the docking with the pipe joints, the immersed tunnel connection work will be completed.

[0004] N +1 Pipe fittings and N +2 Pipe fittings are installed independently of each other, so N +1 Pipe fittings and N +2 Any deviation in the axis of the pipe joint can affect the quality of the connection in the final joint, with potentially serious consequences. Summary of the Invention [Problem to be solved by the invention]

[0005] In response to the deficiencies present in the related art, the present application provides a method for installing a final joint for an immersed tunnel, thereby improving the installation accuracy of the final joint.

[0006] The present application provides a method for installing a final joint for an immersed tunnel, which includes the following steps: First coordinate system setting step. N which has already been installed +3 Set the first coordinate system at the end of the fitting. Feature point placement step. N +1 At the tip end of the pipe fitting, there is a piercing point N +1 S, N +1 Place W, place penetration points DS and DW on the jack segment, and N +2 At the tip end of the pipe fitting, there is a piercing point N +2 S, N +2 Place W and pierce points DS, DW, and N +1 S, N +1 W, N +2 S, N +2 The coordinates of W in the first coordinate system are calculated. N +2 Pipe fitting installation step. Above penetration point N +2 S, N +2 Using the coordinates of W in the first coordinate system, +2 Pipe fittings and the above N +3 Calculate the error of the pipe joint and +2 By adjusting the fitting position, the above N +2 The tip of the pipe fitting and the above N +3 The ends of the fittings are precisely docked. N +1 Pipe fitting installation steps. +1 The tip of the pipe joint is precisely docked with the end of the already installed N pipe joint, and the above-mentioned piercing point N +1 S, N +1 Using the coordinates of W in the first coordinate system, +1 Pipe fittings and the above N +2 Calculate the error of the pipe joint and+1 Adjust the fitting position to the above N +1 Connect the end of the pipe fitting to the N +2 Install close to the end of the pipe fitting. A jack segment extrusion step: Using the coordinates of the penetration points DS and / or DW in the first coordinate system, the jack segment and the N +1 Pipe fittings, above N +2 Calculate the error between the pipe joints and the above N +1 The above N of the above jack segment installed inside the pipe joint +2 By adjusting the extrusion direction to the pipe joint, the above jack segment and the above N +2 The ends of the fittings are precisely docked.

[0007] In some embodiments of the present application, the feature point locating step further comprises: +3 Control point N at the end of the fitting +3 Place D and the above control point N +3 With D as the reference point, the above piercing points DS, DW, and N +1 S, N +1 W, N +2 S, N +2 W and the above control point N +3 Measure the relative position of the piercing points DS, DW, and N. +1 S, N +1 W, N +2 S, N +2 W into the coordinates in the first coordinate system, +3 The coordinates of D in the first coordinate system are (x0, y0, z0), the coordinates of the piercing point DW in the first coordinate system are (x1, y1, z1), the coordinates of the piercing point DS in the first coordinate system are (x2, y2, z2), and the coordinates of the piercing point N +1 The coordinates of S in the first coordinate system are (x3, y3, z3), and the piercing point N +1 The coordinates of W in the first coordinate system are (x4, y4, z4), and the piercing point N +2 The coordinates of S in the first coordinate system are (x5, y5, z5), and the piercing point N +2The coordinates of W in the first coordinate system are (x6, y6, z6).

[0008] In some embodiments of the present application, the N +2 In the pipe fitting installation step, +2 Pipe fittings and the above N +3 The calculation method for pipe joint tolerances is as follows:

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[0009] In some embodiments of the present application, the N +1 In the pipe fitting installation step, +1 Pipe fittings and the above N +2 The calculation method for pipe joint tolerances is as follows:

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[0010] In some embodiments of the present application, the jack segment and the N +2 The calculation method for pipe joint tolerances is as follows:

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[0011] In some embodiments of the present application, the jack segment and the N +2 The calculation method for pipe joint tolerances is as follows:

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[0012] In some embodiments of the present application, a control point ND is placed at the end of the N-shaped pipe joint, and a second coordinate system setting step is further included in which a second coordinate system is set at the end of the N-shaped pipe joint, and the feature point placement step further includes using the control point ND as a reference point and setting the piercing point N +1 S, N +1 Measure the position of W and the piercing point N +1 S, N +1 By converting W into coordinates in the second coordinate system, the above N +1 This includes calculating the error between the pipe joint and the above N pipe joint.

[0013] In some embodiments of the present application, the coordinates of the control point ND in the second coordinate system are (x7, y7, z7), and the piercing point N +1 S, N +1 The coordinates of W in the second coordinate system are (x3', y3', z3') and (x4', y4', z4'), respectively. +1 In the pipe fitting installation step, +1 The calculation method for the error between the pipe joint and the above N pipe joint is as follows:

number

[0014] In some embodiments of the present application, the piercing point N +2 S, N+2 The relative positions of W and the control point ND are measured, and the piercing point N +2 S, N +2 Convert W into coordinates in the second coordinate system, and use the second coordinate system to find N +1 Pipe fittings and the above N +2 Calculate the error of the pipe joint and +1 Pipe fittings and the above N +2 By comparing the error obtained using the first coordinate system of the pipe joint, the N +1 Pipe fittings and the above N +2 The method further includes a first coordinate system accuracy verification step of verifying accuracy in calculating an error of the pipe joint.

[0015] In some embodiments of the present application, the piercing point N +2 S, N +2 The coordinates of W in the second coordinate system are (x5', y5', z5'), (x6', y6', z6'), respectively. In the first coordinate system accuracy verification step, the second coordinate system is used to verify the accuracy of N. +1 Pipe fittings and the above N +2 The method for calculating the tolerance of the pipe joint is as follows:

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[0016] In some embodiments of the present application, in the first coordinate system setting step, +3 Point o located at the end of the pipe fitting and point N above +3 Take point o1 located at the tip of the pipe joint, set point o as the origin of the first coordinate system, set the line between point o and point o1 as the x-axis of the first coordinate system, and set point o as the origin of the first coordinate system. +3 A three-dimensional rectangular coordinate system is set with a line perpendicular to the top surface of the pipe joint as the z-axis, and is defined as the first coordinate system.

[0017] In some embodiments of the present application, in the first coordinate system setting step, +3 From the end of the fitting to the above N +3 The direction toward the end of the pipe fitting is the positive x-axis direction of the first coordinate system, and based on the origin o, x-axis, and positive x-axis direction of the first coordinate system and using the left-hand rule, the straight line on which the left thumb is located is the y-axis of the first coordinate system, and the direction in which the left thumb is pointing is the positive y-axis direction of the first coordinate system.

[0018] In some embodiments of the present application, the second coordinate system setting step includes taking a point o2 located at the end of the N pipe fitting and a point o2' located at the tip of the N pipe fitting, setting the point o2 as the origin of the second coordinate system, setting a straight line on which the points o2 and o2' are located as the x-axis of the second coordinate system, and setting a straight line passing through the point o2 and perpendicular to the top surface of the N pipe fitting as the z-axis, and setting this as the second coordinate system.

[0019] According to the above technical methods, the installation method of the final joint of the immersed tunnel in the embodiment of this application can realize the precise installation of the final joint, and the installation steps are simple and easy to operate. +3 Set the first coordinate system to the pipe joint and +2 At the tip end of the pipe fitting, there is a piercing point N +2 S, N +2 Place W and pierce point N +2 S, N +2 Using the coordinates in the first coordinate system of W, +2 Pipe fittings and N +3 By calculating the error of the pipe joint, N +2 Guides the installation of pipe fittings. N+1 At the tip end of the pipe fitting, there is a piercing point N +1 S, N +1 Place W and pierce point N +1 S, N +1 Using the coordinates in the first coordinate system of W, +1 Pipe fittings and N +2 By calculating the error of the pipe joint, N +1 By placing the penetration points DS and DW on the jack segment, the jack segment and N can be connected by using the coordinates of the penetration points DS and DW in the first coordinate system. +1 Pipe joint error, jack segment and N +2 By calculating the tolerance of the pipe joints, the jack segments can be precisely adjusted. +2 It can be docked with the end of a pipe fitting. [Brief explanation of the drawings]

[0020] The drawings described herein are intended to provide further understanding of the present application and constitute a part of the present application. The schematic examples and the description thereof are used to interpret the present application and are not to be construed as unduly limiting the present application. In the drawings, [Figure 1] FIG. 1 is a schematic diagram of the structure of a conventional immersed tunnel at the time of final joint installation. [Figure 2] FIG. 2 is a flowchart of one embodiment of the method for installing a final joint for an immersed tunnel according to the present invention. [Figure 3] FIG. 3 is a schematic diagram of the location and coordinates of feature points in one embodiment of the installation method for the final joint of an immersed tunnel of the present application. [Figure 4] FIG. 4 is a partially enlarged view of the jack segment portion in FIG. [Figure 5] FIG. 5 is a structural schematic diagram showing one embodiment of the installation method for the final joint of an immersed tunnel according to the present invention, in which the first coordinate system is set at the N+3 pipe joint. [Figure 6] FIG. 6 is a structural schematic diagram showing one embodiment of the installation method for the final joint of an immersed tunnel of the present application, in which a second coordinate system is set at the N pipe joint.

[0021] In the figure, 1, N pipe fittings; 2, N +1 Pipe fittings; 3, N +2 Pipe fittings; 4, N +3 Pipe fittings;5, jack segments. DETAILED DESCRIPTION OF THE INVENTION

[0022] The following provides a clear and complete description of the technical methods in the embodiments, in conjunction with the drawings in the embodiments of the present application. Of course, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Any other embodiments obtained by those skilled in the art based on the embodiments of the present application without any creative work are all within the scope of protection of the present application.

[0023] It should be understood that in describing this application, the orientations or positional relationships indicated by terms such as "center," "lateral," "longitudinal," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate and simplify the description of this application, and do not indicate or imply that the devices or elements referred to necessarily have a specific orientation or are constructed or operated in a specific orientation, and should not be construed as limitations on this application.

[0024] The terms "first" and "second" are for descriptive purposes only and cannot be understood to indicate or imply relative importance or the number of technical features referred to. Thus, a feature qualified as "first" or "second" may explicitly or implicitly include one or more of the feature.

[0025] It should be noted that in the description of this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, or an integral connection. They may also refer to a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

[0026] Although the drawings may show a particular order of method steps, it should be understood that the order of steps may differ from the order depicted. Also, two or more steps may be performed simultaneously or with partial concurrence. Such variations are a matter of designer preference. All such variations are within the scope of this disclosure. In this description, "jack segment" refers to "final joint."

[0027] During the construction of an immersed tunnel, construction is carried out simultaneously from both ends facing each other, and the final joint is installed at the final docking position. The method for installing the final joint of an immersed tunnel in this application mainly refers to the final joint and four pipe joint installation methods related to the installation of the final joint. Other pipe joint installation methods are outside the scope of this application, so please refer to the prior art.

[0028] As shown in Figure 1, both ends are N pipe fittings 1 and N +3 The ends of the two pipe fittings are opposite each other, and the end of N pipe fitting 1 is connected to N +1 Pipe fitting 2 is installed, and N +1 The tip of the pipe fitting 2 is connected to the end of the N pipe fitting 1, +3 N at the end of pipe fitting 4 +2 Pipe fitting 3 is installed, and N +2 The tip of pipe fitting 3 is N +3 Connected to the end of the pipe fitting 4, N +1 The end of pipe fitting 2 is N +2 The pipe joint 3 faces the end of the pipe joint 3, and there is a gap between them. +1A jack segment 5 is installed in the end of the pipe joint 2, and the jack segment 5 is N +1 Pipe fittings 2 to N +2 By pushing in the direction of the pipe fitting 3, the jack segment 5 and N +2 Docking with the pipe joint 3 is completed, thereby completing the construction of the immersed tunnel.

[0029] As shown in Figures 2 to 6, in one exemplary embodiment of the installation method for the final joint of an immersed tunnel of the present application, the installation method for the final joint of an immersed tunnel includes S1 setting a first coordinate system, S2 locating a feature point, and N +2 S3, where the pipe fitting is attached, and N +1 It includes S4, which attaches the pipe joints, and S5, which pushes out the jack segments.

[0030] In S1, where the first coordinate system is set, the N +3 A first coordinate system is set at the end of the pipe joint 4.

[0031] In some embodiments of step S1, the first coordinate system is set in the following manner: As shown in FIG. +3 Set the end of the pipe fitting 4 and N +3 Point o located at the end of the pipe 4 joint and N +3 Take point o1 located at the tip of the pipe joint 4, and set point o as the origin of the first coordinate system. The line between point o and point o1 is the x-axis of the first coordinate system. +3 The line perpendicular to the top surface of the pipe fitting 4 is set as the z-axis, and a three-dimensional rectangular coordinate system is set as the first coordinate system. +3 Pipe fitting 4 tip to N +3 The direction toward the end of the pipe joint 4 is the positive x-axis direction of the first coordinate system, and when the left-hand rule is used based on the origin o, x-axis, and positive x-axis direction of the first coordinate system, the straight line on which the left thumb is located is the y-axis of the first coordinate system, and the direction in which the left thumb is pointing is the positive y-axis direction of the first coordinate system. In some embodiments of step S1, N +3 Control point N at the end of fitting 4 +3 Place D and control point N +3 D is the reference point, and control point N +3The coordinates of D in the first coordinate system are (x0, y0, z0), and the target point and control point N +3 By measuring the relative position of D, the coordinate position of the target point in the first coordinate system is converted and obtained.

[0032] In the feature point arrangement step S2, as shown in FIGS. 3 and 4, N +1 At the tip end of the pipe fitting 2, there is a piercing point N +1 S, N +1 W is placed, and piercing points DS and DW are placed at the tip ends of the jack segment 5, respectively, and N +2 At the tip end of the pipe fitting 3, there is a piercing point N +2 S, N +2 Place W. Piercing points DS, DW, N +1 S, N +1 W, N +2 S, N +2 W is the target point in the final joint installation method, and the penetration points DS, DW, and N +1 S, N +1 W, N +2 S, N +2 Calculate the coordinates of W in the first coordinate system.

[0033] In some embodiments of step S2, the piercing points DS, DW, N +1 S, N +1 W, N +2 S, N +2 W and control point N +3 By measuring the relative position of each of the piercing points DS, DW, and N, +1 S, N +1 W, N +2 S, N +2 The coordinates of W in the first coordinate system can be calculated, among which the coordinates of piercing point DW in the first coordinate system are (x1, y1, z1), the coordinates of piercing point DS in the first coordinate system are (x2, y2, z2), and the coordinates of piercing point N +1 The coordinates of S in the first coordinate system are (x3, y3, z3), and the piercing point N +1 The coordinates of W in the first coordinate system are (x4, y4, z4), and the piercing point N +2 The coordinates of S in the first coordinate system are (x5, y5, z5), and the piercing point N +2The coordinates of W in the first coordinate system are (x6, y6, z6).

[0034] N +2 In the pipe fitting installation step S3, the piercing point N +2 S, N +2 Using the coordinates in the first coordinate system of W, +2 Pipe fittings 3 and N +3 Calculate the error of pipe joint 4 and calculate the N +2 Pipe fittings 3 and N +3 N based on the error of pipe fitting 4 +2 Adjust the installation position of the pipe joint 3 and +2 Tip of pipe fitting 3 and N +3 By precisely docking the end of the pipe joint 4, +2 The installation accuracy of the pipe joint 3 is improved.

[0035] In some embodiments of step S3, N +2 Pipe fittings 3 and N +3 The error of the pipe joint 4 is calculated as follows.

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[0036] N +1 In step S4 of fitting installation, +1 The tip of the pipe fitting 2 is precisely docked with the end of the N pipe fitting 1, which has already been installed. +1 Pipe fitting 2 is attached N +2 Since it is necessary to connect to pipe fitting 3, +1 Pipe fittings 2 and N +2 If the error in fitting 3 is too large, +1 Pipe fitting 2 is N +2It is not possible to precisely dock with the pipe fitting 3. Therefore, the piercing point N +1 S, N +1 Using the coordinates in the first coordinate system of W, +1 Pipe fittings 2 and N +2 By calculating the error of pipe fitting 3, N +1 Adjust the installation position of the pipe joint 2, thereby +1 Pipe fittings 2 and N +2 Ensure that the tolerance of the pipe joint 3 meets the requirements. It should be noted that N +1 The end of pipe fitting 2 is N +2 It is installed near the end of the pipe joint 3, and there is a gap between them.

[0037] In some embodiments of step S4, N +1 Pipe fittings 2 and N +2 The error of the pipe joint 3 is calculated as follows.

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[0038] In the above installation method of the final joint of the immersed tunnel, the jack segment 5 is N +1 Installed in pipe joint 2 and N +1 After the installation of pipe fitting 2 is completed, +1 Pushed out from inside pipe fitting 2 +2 It docks with the end of the pipe joint 3. It should be noted that when the jack segment 5 is pushed out, N +1 There is a significant difference between the pipe joint 2 and the jack segment. +2A fairly large error in pipe joint 3 causes the N of jack segment 5 +1 Pipe fittings 2 and N +2 This may affect the connection effect to the pipe joint 3. Therefore, in the jack segment extrusion step S5, the jack segment 5 and N are connected by using the coordinates of the penetration points DS and / or DW in the first coordinate system. +1 Pipe fitting 2, N +2 Calculate the error between fitting 3 and N +1 The jack segment 5 installed inside the pipe joint 2 is N +2 By inducing the jack segment to be pushed towards the pipe joint 3, +2 It is necessary to precisely dock the end of the pipe joint 3. It should be further explained that when the jack segment 5 is pushed out, the end of the jack segment 5 and the N +2 The end of the pipe joint 3 is docked, but the tip of the jack segment 5 is still N +1 It is located within two pipe joints.

[0039] In some embodiments of step S5, the coordinates of the penetration point DW in the first coordinate system are used to determine the jack segments 5 and N. +2 Calculate the error of the pipe joint 3, and use the coordinates of the piercing point DS in the first coordinate system to find the jack segment 5 and N +1 Calculate the error of pipe joint 2. Specifically, calculate the error between jack segment 5 and N +2 The error of the pipe joint 3 is calculated as follows.

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[0040] In some other embodiments of step S5, the coordinates of the penetration points DW and DS in the first coordinate system are used to determine the distance between the jack segments 5 and N. +1 Pipe fitting 2, N +2 Calculate the error between the jack segment 5 and the pipe joint 3. +2 The error of the pipe joint 3 is calculated as follows.

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[0041] In actual construction, first, refer to the N pipe fitting 1 that has already been installed. +1 Pipe fitting 2 must be installed, N +1 In order to ensure the installation accuracy of the pipe joint 2 and the N pipe joint 1, some embodiments of the installation method for the final joint of the immersed tunnel further include locating a control point ND at the end of the N pipe joint 1, and setting a second coordinate system at the end of the N pipe joint 1. In the feature point placement step S2, the control point ND is used as the reference point, and the piercing point N +1 S, N +1 Measure the relative position of each point W and the piercing point N +1 S, N +1 Converting into coordinates in the second coordinate system of W, N +1 The error between the pipe joint 2 and the N pipe joint 1 is calculated, and the second coordinate is set in S10. +1 Due to the error between fitting 2 and fitting 1, +1 Adjust the installation position of the pipe joint 2.

[0042] In some embodiments of step S10, as shown in FIG. 6, the second coordinate system setting step includes taking point o2 located at the end of the N-shaped fitting 1 and point o2' located at the tip of the N-shaped fitting 1, setting point o2 as the origin of the second coordinate system, setting the line on which points o2 and o2' are located as the x-axis of the second coordinate system, setting the line passing through point o2 and perpendicular to the top surface of the N-shaped fitting 1 as the z-axis, setting a three-dimensional rectangular coordinate system as the second coordinate system, and setting the direction from the tip of the N-shaped fitting 1 to the end of the N-shaped fitting 1 as the positive x-axis direction of the first coordinate system. Based on the origin o, x-axis, and positive x-axis direction of the second coordinate system, and using the left-hand rule, the line on which the left thumb is located is the y-axis of the second coordinate system, and the direction in which the left thumb is pointing is the positive y-axis direction of the second coordinate system.

[0043] N +1 In some embodiments of the pipe fitting attachment step S4, the coordinates of the control point ND in the second coordinate system are (x7, y7, z7), and the piercing point N +1 S, N +1 The coordinates of W in the second coordinate system are (x3', y3', z3') and (x4', y4', z4'), respectively, and N +1 The calculation method for the error between pipe fitting 2 and N pipe fitting 1 is as follows.

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[0044] In some embodiments of the method for installing the final joint of an immersed tunnel, the method further includes a first coordinate system accuracy verification step S40, and the piercing point N +2 S, N +2 Measure the relative positions of W and control point ND, and pierce point N +2 S, N +2 Convert to coordinates in the second coordinate system of W, and use the second coordinate system to find N +1 Pipe fittings 2 and N +2 Calculate the error of the pipe joint 3 and calculate N using the second coordinate system. +1 Pipe fittings 2 and N +2 The error of pipe joint 3 is calculated using the first coordinate system. +1 Pipe fittings 2 and N +2 By comparing with the error of pipe joint 3, N +1 Pipe fittings 2 and N +2 The accuracy of calculating the error of the pipe joint 3 is verified.

[0045] In some embodiments of step S40, the piercing point N +2 S, N +2 The coordinates of W in the second coordinate system are (x5', y5', z5') and (x6', y6', z6'), respectively. +1 Pipe fittings 2 and N +2 The method for calculating the error of the pipe joint 3 is as follows.

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[0046] In the above installation method of the final joint of the immersed tunnel, +3 Set the first coordinate system to the pipe joint and +2 At the tip end of the pipe fitting, there is a piercing point N +2 S, N +2 Place W and pierce point N +2 S, N +2 Using the coordinates in the first coordinate system of W, +2 Pipe fittings and N +3 By calculating the error of the pipe joint, N +2 Guides the installation of pipe fittings. N +1 At the tip end of the pipe fitting, there is a piercing point N +1 S, N +1 Place W and pierce point N +1 S, N +1 Using the coordinates in the first coordinate system of W, +1 Pipe fittings and N +2 By calculating the error of the pipe joint, N +1 By guiding the installation of the pipe joint and locating the penetration points DS and DW on the jack segment, the coordinates of the penetration points DS and DW in the first coordinate system are used to connect the jack segment and N +1 Pipe joint error, jack segment and N +2 By calculating the tolerance of the pipe joint and adjusting the extrusion direction of the jack segment, the jack segment can be precisely adjusted. +2 It can be docked with the end of a pipe fitting. Example 1

[0047] In the following, control point N +3 The coordinates of D in the first coordinate system are (x0, y0, z0), the coordinates of piercing point DW in the first coordinate system are (x1, y1, z1), the coordinates of piercing point DS in the first coordinate system are (x2, y2, z2), and the coordinates of piercing point N +1 The coordinates of S in the first coordinate system are (x3, y3, z3), and the piercing point N +1 The coordinates of W in the first coordinate system are (x4, y4, z4), and the piercing point N +2 The coordinates of S in the first coordinate system are (x5, y5, z5), and the piercing point N +2 The coordinates of W in the first coordinate system are (x6, y6, z6), the coordinates of the control point ND in the second coordinate system are (x7, y7, z7), and the piercing point N +1 S, N +1 Taking the coordinates of W in the second coordinate system as (x3', y3', z3') and (x4', y4', z4') respectively as an example, the above-mentioned installation method of the final joint of the immersed tunnel is introduced in detail, and the above-mentioned installation method of the final joint of the immersed tunnel includes the following steps: S1 sets the first coordinate system. N +3 Point o located at the end of pipe joint 4 and N +3 Take point o1 located at the tip of the pipe joint 4, and set point o as the origin of the first coordinate system. The line between point o and point o1 is the x-axis of the first coordinate system. +3 A line perpendicular to the top surface of the pipe joint 4 is set as the z-axis, and a three-dimensional rectangular coordinate system is set as the first coordinate system. +3 Pipe fitting 4 tip to N +3 The direction toward the end of pipe fitting 4 is the positive x-axis direction of the first coordinate system, and based on the origin o, x-axis, and positive x-axis direction of the first coordinate system, and using the left-hand rule, the straight line on which the left thumb is located is the y-axis of the first coordinate system, and the direction in which the left thumb is pointing is the positive y-axis direction of the first coordinate system.

[0048] A second coordinate system is set up in S10. Point o2 located at the end of N pipe fitting 1 and point o2' located at the tip of N pipe fitting 1 are taken, point o2 is set as the origin of the second coordinate system, the line on which points o2 and o2' are located is set as the x-axis of the second coordinate system, and the line that passes through point o2 and is perpendicular to the top surface of N pipe fitting 1 is set as the z-axis, a three-dimensional rectangular coordinate system is set up as the second coordinate system, the direction from the end of N pipe fitting 1 to the tip of N pipe fitting 1 is set as the positive x-axis direction of the first coordinate system, and based on the origin o2, x-axis, and positive x-axis direction of the second coordinate system, using the left-hand rule, the line on which the left thumb is located is the y-axis of the second coordinate system, and the direction in which the left thumb is pointing is the positive y-axis direction of the second coordinate system.

[0049] S2 to locate feature points. N +1 At the tip end of the pipe fitting 2, there is a piercing point N +1 S, N +1 W is placed, and piercing points DS and DW are placed at the tip end of the jack segment 5, and N +2 At the tip end of the pipe fitting 3, there is a piercing point N +2 S, N +2 Place W and N +3 Control point N at the end of fitting 4 +3 D is placed, and a control point ND is placed at the end of the N pipe fitting 1, and the control point N +3 With D as the reference point, the coordinates (x1, y1, z1) of the piercing point DW in the first coordinate system, the coordinates (x2, y2, z2) of the piercing point DS in the first coordinate system, and the coordinates of the piercing point N +1 Coordinates (x3, y3, z3) of S in the first coordinate system, piercing point N +1 Coordinates (x4, y4, z4) in the first coordinate system of W, piercing point N +2 Coordinates (x5, y5, z5) of S in the first coordinate system, piercing point N +2 Calculate the coordinates (x6, y6, z6) of W in the first coordinate system. +3 The coordinates of D in the first coordinate system are (x0, y0, z0).

[0050] N +2 S3 where the pipe fitting is attached. Piercing point N +2 S, N +2 Using the coordinates in the first coordinate system of W, +2 Pipe fittings 3 and N +3The errors Δx1, Δy1, and Δz1 of the pipe joint 4 are calculated, and Δx1, Δy1, and Δz1 are compared with the actual construction tolerance. If Δx1, Δy1, and Δz1 are all within the construction tolerance, N +2 The pipe fitting 3 is attached to a predetermined position, and if Δx1 and / or Δy1 and / or Δz1 exceed the construction tolerance, N is +2 Adjust the installation position of pipe joint 3 to N +2 Pipe fittings 3 and N +3 The pipe fitting 4 is precisely docked.

[0051] N +1 Install the pipe fitting S4. N +1 Pipe fitting 2 is sunk to the seabed, and N +1 The tip of the pipe joint 2 is precisely docked to the end of the already installed N pipe joint 1, and the N +1 Calculate the errors Δx5, Δy5, and Δz5 between pipe fitting 2 and N pipe fitting 1, and use the coordinates of the first coordinate system to find the error. +1 Pipe fittings 2 and N +2 Calculate the errors Δx2, Δy2, and Δz2 of the pipe joint 3, and compare Δx2, Δy2, Δz2, Δx5, Δy5, and Δz5 with the actual construction tolerances. If Δx2, Δy2, Δz2, Δx5, Δy5, and Δz5 are all within the construction tolerances, N +1 The pipe fitting 2 is installed in a predetermined position, and if Δx2 and / or Δy2 and / or Δz2 and / or Δx5 and / or Δy5 and / or Δz5 exceed the construction tolerance, N +1 Adjust the installation position of pipe joint 2 until Δx2, Δy2, Δz2, Δx5, Δy5, and Δz5 are all within the installation tolerances, and +1 The pipe fitting 2 is precisely attached.

[0052] S40 verifies the accuracy of the first coordinate system. +1 Pipe fittings 2 and N +2The errors Δx6, Δy6, and Δz6 of the pipe fitting 3 are calculated, and Δx2, Δy2, and Δz2 are compared with Δx6, Δy6, and Δz6. If the differences between Δx2, Δy2, and Δz2 and Δx6, Δy6, and Δz6 are within the allowable error range, the accuracy of the first coordinate system is high. If the differences between Δx2 and / or Δy2 and / or Δz2 and Δx6 and / or Δy6 and / or Δz6 exceed the allowable error range, the accuracy of the first coordinate system and / or the second coordinate system is quite low, and it is necessary to reset the first coordinate system and / or the second coordinate system to ensure the accuracy of the first coordinate system.

[0053] S5 pushes out the jack segment. Using the coordinates of the penetration points DS and DW in the first coordinate system, jack segments 5 and N +1 Pipe fitting 2, N +2 Calculate the error of pipe joint 3, jack segment 5 and N +2 The errors of pipe joint 3 are Δx3, Δy3, and Δz3, and the errors of jack segment 5 and N +1 The errors of pipe joint 2 are Δx4, Δy4, and Δz4. Δx3, Δy3, Δz3, Δx4, Δy4, and Δz4 are compared with the construction tolerances, and if Δx3, Δy3, Δz3, Δx4, Δy4, and Δz4 are all within the tolerance range, push out jack segment 5 and perform N. +2 The jack segment 5 is docked with the end of the pipe joint 3, and if Δx3 and / or Δy3 and / or Δz3 and / or Δx4 and / or Δy4 and / or Δz4 are outside the error tolerance range, the position of the jack segment 5 is adjusted until Δx3, Δy3, Δz3, Δx4, Δy4, and Δz4 are all within the error tolerance range, and the jack segment 5 and N +2 The end of the pipe joint 3 is precisely docked.

[0054] It should be noted that the range of construction tolerances is a well-known common knowledge in this field, and therefore will not be repeated here.

[0055] In the above installation method of the final joint of the immersed tunnel, the penetration point N +2 S, N +2 Using the coordinates in the first coordinate system of W, +2 Pipe fittings and N+3 By calculating the error of the pipe joint, N +2 Adjust the fitting position and +2 Pipe fittings and N +3 Ensures accurate fitting of pipe fittings and penetration point N +1 S, N +1 Using the coordinates in the second coordinate system of W, +1 By calculating the error between the pipe fitting and the N pipe fitting, +1 Adjust the fitting position and +1 Ensures accurate installation of pipe fittings and N pipe fittings, and penetration point N +1 S, N +1 W, N +2 S, N +2 Using the coordinates in the first coordinate system of W, +1 Pipe fittings and N +2 By calculating the error of the pipe joint, N +1 Adjust the fitting tip installation position and +1 End of pipe fitting and N +2 Ensure that the ends of the pipe joints are precisely opposed and placed close to each other, so that the N +2 Accurately dock with pipe fittings and pass-through points DS, DW, N +1 S, N +1 W, N +2 S, N +2 Using the coordinates in the first coordinate system of W, the jack segment and N +1 Pipe fittings, N +2 The error of the pipe joint is calculated and obtained, and the extrusion direction of the jack segment is adjusted to N +2 It can be precisely docked with the pipe joint.

[0056] Finally, it should be noted that each embodiment in this specification is described progressively, and the emphasis in each embodiment is on the differences between the other embodiments, and the same or similar parts between the embodiments can be mutually referenced.

[0057] The above examples are for illustrating the technical solutions of the present application, but are not intended to limit the same. Although the present application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that they may subsequently make modifications to the specific embodiments of the present application or make equivalent substitutions for some of the technical features, which will not depart from the spirit of the technical solutions of the present application, and all of them will fall within the scope of the technical solutions claimed in the present application.

Claims

1. In the installation method of the final joint of the immersed tunnel, N which has already been installed ＋３ a first coordinate system setting step of setting a first coordinate system at an end of the pipe joint; N ＋１ At the tip end of the pipe joint, there is a piercing point N ＋１ S.N. ＋１ Place W, place penetration points DS and DW on the jack segment, and N ＋２ At the tip end of the pipe joint, there is a piercing point N ＋２ S.N. ＋２ W is placed, and piercing points DS, DW, N ＋１ S.N. ＋１ W, N ＋２ S.N. ＋２ a feature point arrangement step of calculating the coordinates of W in the first coordinate system; The piercing point N ＋２ S.N. ＋２ Using the coordinates of W in the first coordinate system, ＋２ Pipe joint and the above N ＋３ Calculate the error of the pipe joint and ＋２ By adjusting the installation position of the pipe joint, ＋２ The tip of the pipe joint and the N ＋３ N for precise docking of pipe joint ends ＋２ a pipe fitting installation step; The N ＋１ The tip of the pipe joint is precisely docked with the end of the N pipe joint that has already been installed, and the piercing point N ＋１ S.N. ＋１ Using the coordinates of W in the first coordinate system, ＋１ Pipe joint and the above N ＋２ Calculate the error of the pipe joint and ＋１ Adjust the fitting position of the pipe joint to ＋１ The end of the pipe joint is ＋２ N installed close to the end of the pipe joint ＋１ a pipe fitting installation step; The jack segment and the N are connected by using the coordinates of the piercing point DS and / or the piercing point DW in the first coordinate system. ＋１ Pipe joint, said N ＋２ Calculate the error of each pipe joint, and ＋１ The jack segment installed inside the pipe joint is ＋２ By adjusting the pushing direction toward the pipe joint, the jack segment and the N ＋２ a jack segment extrusion step for precisely docking the end of the pipe fitting; The feature point arranging step further includes arranging a control point N+3D at an end of the N+3 pipe joint, and using the control point N+3D as a reference point to measure the relative positions of the pierce points DS, DW, N+1S, N+1W, N+2S, and N+2W and the control point N+3D, and converting them into coordinates in the first coordinate system of the pierce points DS, DW, N+1S, N+1W, N+2S, and N+2W, wherein the coordinates of the control point N+3D in the first coordinate system are (x0, y0, z0), the coordinates of the pierce point DW in the first coordinate system are (x1, y1, z1), the coordinates of the pierce point DS in the first coordinate system are (x2, y2, z2), and the coordinates of the pierce point N+1 The coordinates of the piercing point N+1 S in the first coordinate system are (x3, y3, z3), the coordinates of the piercing point N+1 W in the first coordinate system are (x4, y4, z4), the coordinates of the piercing point N+2 S in the first coordinate system are (x5, y5, z5), and the coordinates of the piercing point N+2 W in the first coordinate system are (x6, y6, z6), In the jack segment pushing-out step, the error calculation method between the jack segment and the N+2 pipe joint is as follows: [Equation 3] Δx 3 is the error between the jack segment and the N+2 pipe joint in the x-axis direction, Δy 3 is the error between the jack segment and the N+2 pipe joint in the y-axis direction, and Δz 3 is the error between the jack segment and the N+2 pipe joint in the z-axis direction; The calculation method of the error between the jack segment and the N+1 pipe joint is as follows: [Equation 4] Δx 4 is an error in the x-axis direction between the jack segment and the N+1 pipe joint, Δy 4 is an error in the y-axis direction between the jack segment and the N+1 pipe joint, and Δz 4 is an error in the z-axis direction between the jack segment and the N+1 pipe joint. How to install the final joint in an immersed tunnel.

2. The N ＋２ In the pipe joint mounting step, ＋２ Pipe joint and the above N ＋３ The calculation method for pipe fitting error is as follows: [Equation 1] Δx １ is the above N ＋２ Pipe joint and the above N ＋３ is the error in the x-axis direction of the pipe joint, and Δy １ is the above N ＋２ Pipe fittings and N ＋３ is the error in the y-axis direction of the pipe joint, and Δz １ is the above N ＋２ Pipe joint and the above N ＋３ The error is in the z-axis direction of the pipe joint. A method for installing a final joint for an immersed tunnel according to claim 1.

3. The N ＋１ In the pipe joint mounting step, ＋１ Pipe joint and the above N ＋２ The calculation method for pipe fitting error is as follows: [Equation 2] Δx ２ is the N ＋１ Pipe joint and the above N ＋２ is the error in the x-axis direction of the pipe joint, and ２ is N ＋１ Pipe fittings and N ＋２ The error in the y-axis direction with the pipe joint is Δz ２ is the N ＋１ Pipe joint and the above N ＋２ The error is in the z-axis direction of the pipe joint. A method for installing a final joint for an immersed tunnel according to claim 1.

4. A method for installing a final joint for an immersed tunnel, comprising: a first coordinate system setting step of setting a first coordinate system at the end of the N+3 pipe fitting that has already been installed; a feature point placement step of placing pierce points N+1S and N+1W at the tip end of the N+1 pipe joint, placing pierce points DS and DW on the jack segment, placing pierce points N+2S and N+2W at the tip end of the N+2 pipe joint, and calculating the coordinates of pierce points DS, DW, N+1S, N+1W, N+2S, and N+2W in the first coordinate system; an N+2 pipe fitting installation step of calculating an error between the N+2 pipe fitting and the N+3 pipe fitting using the coordinates of the piercing points N+2S and N+2W in the first coordinate system and adjusting the installation position of the N+2 pipe fitting to accurately dock the tip of the N+2 pipe fitting and the end of the N+3 pipe fitting; an N+1 pipe fitting installation step of precisely docking the tip of the N+1 pipe fitting with the end of the already installed N pipe fitting, calculating the error between the N+1 pipe fitting and the N+2 pipe fitting using the coordinates of the piercing points N+1S and N+1W in the first coordinate system, and adjusting the installation position of the N+1 pipe fitting to install the end of the N+1 pipe fitting close to the end of the N+2 pipe fitting; a jack segment extrusion step of calculating errors between the jack segment and the N+1 pipe joint and the N+2 pipe joint using the coordinates of the piercing point DS and / or the piercing point DW in the first coordinate system, and adjusting the direction in which the jack segment installed inside the N+1 pipe joint is pushed toward the N+2 pipe joint, thereby accurately docking the jack segment and the end of the N+2 pipe joint; The feature point arranging step further includes arranging a control point N+3D at an end of the N+3 pipe joint, and using the control point N+3D as a reference point to measure the relative positions of the pierce points DS, DW, N+1S, N+1W, N+2S, and N+2W and the control point N+3D, and converting them into coordinates in the first coordinate system of the pierce points DS, DW, N+1S, N+1W, N+2S, and N+2W, wherein the coordinates of the control point N+3D in the first coordinate system are (x0, y0, z0), the coordinates of the pierce point DW in the first coordinate system are (x1, y1, z1), the coordinates of the pierce point DS in the first coordinate system are (x2, y2, z2), and the coordinates of the pierce point N+1 The coordinates of the piercing point N+1 S in the first coordinate system are (x3, y3, z3), the coordinates of the piercing point N+1 W in the first coordinate system are (x4, y4, z4), the coordinates of the piercing point N+2 S in the first coordinate system are (x5, y5, z5), and the coordinates of the piercing point N+2 W in the first coordinate system are (x6, y6, z6), In the jack segment pushing-out step, ＋２ The calculation method for pipe fitting error is as follows: [Equation 5] Δx ３ ' is the jack segment and the N ＋２ is the error in the x-axis direction of the pipe joint, and Δy ３ ' is the jack segment and N ＋２ is the error in the y-axis direction of the pipe joint, and Δz ３ ' is the jack segment and the N ＋２ is the error in the z-axis direction of the pipe joint, The jack segment and the N ＋１ The calculation method for pipe fitting error is as follows: [Equation 6] Δx ４ ' is the jack segment and the N ＋１ is the error in the x-axis direction of the pipe joint, and Δy ４ ' is the jack segment and N ＋１ is the error in the y-axis direction of the pipe joint, and Δz ４ ' is the jack segment and the N ＋１ The error is in the z-axis direction of the pipe joint. How to install the final joint in an immersed tunnel.

5. The method further includes a second coordinate system setting step of setting a control point ND at the end of the N pipe joint and setting a second coordinate system at the end of the N pipe joint, and the feature point setting step further includes a second coordinate system setting step of setting the control point ND as a reference point and setting the piercing point N ＋１ S.N. ＋１ The positions of the piercing points N ＋１ S.N. ＋１ By converting the coordinates of W into coordinates in the second coordinate system, ＋１ 2. The method for installing a final joint for an immersed tunnel according to claim 1, further comprising calculating an error between the pipe joint and the N pipe joint.

6. The coordinates of the control point ND in the second coordinate system are (x7, y7, z7), and the piercing point N ＋１ S.N. ＋１ The coordinates of W in the second coordinate system are (x3', y3', z3') and (x4', y4', z4'), respectively. ＋１ In the pipe joint mounting step, ＋１ The calculation method for the error between the pipe joint and the N pipe joint is as follows: [Equation 7] Δx ５ is the above N ＋１ is the error in the x-axis direction between the pipe joint and the N pipe joint, and Δy ５ is the above N ＋１ The error in the y-axis direction between the pipe joint and the N pipe joint is Δz ５ is the above N ＋１ The error is in the z-axis direction between the pipe joint and the N pipe joint. A method for installing a final joint for an immersed tunnel according to claim 5.

7. The piercing point N ＋２ S.N. ＋２ The relative positions of W and the control point ND are measured, and the piercing point N ＋２ S.N. ＋２ W into coordinates in the second coordinate system, and N ＋１ Pipe fittings and N ＋２ Calculate the error of the pipe joint, and ＋１ Pipe joint and the above N ＋２ By comparing the error obtained using the first coordinate system of the pipe joint, the N ＋１ Pipe joint and the above N ＋２ The method for installing a final joint for an immersed tunnel according to claim 6, further comprising a first coordinate system accuracy verification step for verifying the accuracy in calculating the error of the pipe joint.

8. The piercing point N ＋２ S.N. ＋２ The coordinates of W in the second coordinate system are (x5', y5', z5') and (x6', y6', z6'), respectively. In the first coordinate system accuracy verification step, the second coordinate system is used to verify the accuracy of N ＋１ Pipe joint and the above N ＋２ The method for calculating the error of pipe fittings is as follows: [Equation 8] Δx ６ is the N in the second coordinate system ＋１ Pipe joint and the above N ＋２ is the error in the x-axis direction of the pipe joint, and Δy ６ is the N in the second coordinate system ＋１ Pipe fittings and N ＋２ is the error in the y-axis direction of the pipe joint, and Δz ６ is the N in the second coordinate system ＋１ Pipe joint and the above N ＋２ is the error in the z-axis direction of the pipe joint, Δx ２ and Δx ６ The difference between Δy ２ and Δy ６ The difference between Δz ２ and Δz ６ By comparing the difference between ＋１ Pipe joint and the above N ＋２ The accuracy of calculating pipe joint errors is verified. A method for installing a final joint for an immersed tunnel according to claim 7.

9. In the first coordinate system setting step, ＋３ Point o located at the end of the pipe joint and point N ＋３ Point o located at the tip of the pipe joint １ The point o is taken as the origin of the first coordinate system, and the point o and the point o １ The line on which the point o is located is set as the x-axis of the first coordinate system, and the line passing through the point o is set as the ＋３ A method for installing a final joint for an immersed tunnel as described in claim 1, characterized in that a three-dimensional rectangular coordinate system is set up with a line perpendicular to the top surface of the pipe joint as the z-axis, and this is used as the first coordinate system.

10. In the first coordinate system setting step, ＋３ From the tip of the pipe joint ＋３ The method for installing a final joint for an immersed tunnel as described in claim 9, characterized in that the direction toward the end of the pipe joint is the positive x-axis direction of the first coordinate system, and based on the origin o, x-axis and positive x-axis direction of the first coordinate system and using the left-hand rule, the straight line on which the thumb of the left hand is located is the y-axis of the first coordinate system, and the direction in which the thumb of the left hand is pointing is the positive y-axis direction of the first coordinate system.

11. The method for installing a final joint for an immersed tunnel as described in claim 5, characterized in that the second coordinate system setting step includes taking point o2 located at the end of the N pipe joint and point o2' located at the tip of the N pipe joint, setting point o2 as the origin of the second coordinate system, setting a straight line on which point o2 and point o2' are located as the x-axis of the second coordinate system, and setting a straight line passing through point o2 and perpendicular to the top surface of the N pipe joint as the z-axis, and setting this as the second coordinate system.

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