A method and device for monitoring the line shape of a curved continuous beam during construction

Abstract

The application discloses a curve continuous beam construction line type monitoring device, which comprises a control system, a first base point GPS coordinate instrument, a second base point GPS coordinate instrument, a first moving point GPS coordinate instrument, a second moving point GPS coordinate instrument, a first hanging basket and a second hanging basket, the first hanging basket and the second hanging basket are respectively installed at the bridge piers on the two sides, the first base point GPS coordinate instrument, the second base point GPS coordinate instrument, the first moving point GPS coordinate instrument and the second moving point GPS coordinate instrument are connected with the control system, the first base point GPS coordinate instrument and the second base point GPS coordinate instrument are respectively installed at the center positions of the beam surfaces of the bridge piers on the two sides, and the first moving point GPS coordinate instrument and the second moving point GPS coordinate instrument are respectively installed at the opposite positions on the same side of the first hanging basket and the second hanging basket. Meanwhile, a curve continuous beam construction line type monitoring method is disclosed, the position of the hanging basket is controlled by establishing a reference line and a construction control line based on the bridge design curve equation set initially as a reference, and the curve continuous beam is ensured to meet the design requirements.

Description

Technical Field

[0001] This invention relates to the field of hanging basket construction technology, specifically to a method and device for monitoring the alignment of curved continuous beam construction. Background Technology

[0002] During the construction of curved continuous beams, different construction segments are poured from the piers towards the closure section. To ensure smooth closure of the two bridge sections and avoid misalignment, it is necessary to control the axial and lateral roll of the construction segments during construction. Axis monitoring and roll monitoring are used to control the axial and roll errors of the curved continuous beam to meet design requirements, respectively. Currently, technicians establish measurement base stations and set temporary measurement control points. Based on theoretical coordinates and pre-camber, they adjust the formwork position of the formwork. The entire process requires measuring and calculating the coordinates of each point, and then adjusting the formwork based on the measurement results. The existing curved continuous beam construction process has the problem that each segment requires technicians to perform multiple point-to-point measurements and calculations, followed by adjusting the formwork position. This process is cumbersome, time-consuming, and results in low construction efficiency. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a method and device for monitoring the construction alignment of curved continuous beams, which can acquire the coordinates of each point in real time and complete the calculation with a precise algorithm, automatically control the adjustment of the hanging basket position, and ensure that the curved continuous beam meets the design requirements.

[0004] The present invention solves the above problems through the following technical means:

[0005] A method for monitoring the alignment during construction of a curved continuous beam includes axis monitoring and roll monitoring. The axis monitoring includes the following steps:

[0006] Step A1: Install a first base point GPS coordinate instrument and a second base point GPS coordinate instrument at the center line of the beam surface of the two bridge piers respectively. Let the coordinate point of the first base point GPS coordinate instrument be B1 and the coordinate point of the second base point GPS coordinate instrument be B2. Establish the reference line B1B2 based on the two points B1 and B2 and the bridge design curve equation.

[0007] Step A2: Install a first moving point GPS coordinate instrument on the first hanging basket and a second moving point GPS coordinate instrument on the second hanging basket. Let the coordinate point of the first moving point GPS coordinate instrument be S1 and the coordinate point of the second moving point GPS coordinate instrument be S2. Establish the circular arc construction control line S10S20 based on the two points S1 and S2 and the radius of curvature of the hanging basket movement path under ideal conditions.

[0008] Step A3: During initial installation, adjust the position and angle of the hanging basket and anchor it. Fix the position of the first moving point GPS coordinate instrument and adjust the position of the second moving point GPS coordinate instrument so that the center of the arc construction control line and the reference line coincide on the XY plane. The XY plane is a plane parallel to the beam surface of the continuous curved beam to be constructed. Fix the second moving point GPS coordinate instrument.

[0009] Step A4: During each subsequent movement of the first and second hanging baskets, the control system calculates whether the real-time coordinates S1′ of the first moving point GPS coordinate instrument and the real-time coordinates S2′ of the second moving point GPS coordinate instrument are on the arc construction control line S10S20. Based on the calculation results of the control system, the direction of the hanging basket is adjusted to ensure that the axis error of the curved continuous beam meets the design requirements.

[0010] Furthermore, the roll monitoring includes the following steps:

[0011] Step C1: Install a first base point GPS coordinate instrument and a second base point GPS coordinate instrument at the center line of the beam surface of the two bridge piers respectively. Let the coordinate point of the first base point GPS coordinate instrument be B1 and the coordinate point of the second base point GPS coordinate instrument be B2. Establish a reference line B1B2 based on the two points B1 and B2 and the bridge design curve equation.

[0012] Step C2: Install a first moving point GPS coordinate instrument on the first hanging basket and a second moving point GPS coordinate instrument on the second hanging basket. Let the coordinate point of the first moving point GPS coordinate instrument be S1 and the coordinate point of the second moving point GPS coordinate instrument be S2. Establish the circular arc construction control line S10S20 based on the two points S1 and S2 and the radius of curvature of the hanging basket movement path under ideal conditions.

[0013] Step C3: After completing the position adjustment of the first and second hanging baskets of the first construction segment, the control system records the vertical coordinate values ​​SD1 and SD2 of coordinate point S1 and coordinate point S2 respectively.

[0014] Step C4: When the first and second hanging baskets move forward to the next construction segment, before the first or second hanging basket is anchored, the vertical coordinate values ​​of coordinate points S1 and S2 are calculated respectively, using the system coordinate values ​​SD1 and SD2 as references, to see if they are within the allowable error range.

[0015] Step C5: Based on the judgment result of step C4, adjust the positions of the first and second hanging baskets to within the allowable error range, and anchor the first and second hanging baskets to ensure that the roll error of the curved continuous beam meets the design requirements.

[0016] Furthermore, in step A4, the calculation method for determining whether coordinate points S1 and S2 lie on the arc construction control line S10S20 is as follows:

[0017] Let: the coordinate point S1 be (X S1 ,Y S1 Z S1 ), the coordinates of point S2 are (X S2 ,Y S2 Z S2 );

[0018] Coordinate point B1 is (X B1 ,Y B1 Z B1 ), the coordinates of point B2 are (X B2 ,Y B2 Z B2 );

[0019] The radius of curvature of the axis B1B2 of the curved continuous beam is Rz;

[0020] The radius of curvature of the circular arc construction control line S10S20 is Rd=Rz+a, where a is the difference in the radius of curvature between the reference line and the construction monitoring line;

[0021] Therefore, the coordinates of the center O of the circular arc construction control line are (X0, Y0, Z0), where,

[0022]

[0023] Distance from coordinate point S1 to the center O of the circle

[0024] Distance from coordinate point S2 to the center O of the circle

[0025] When OS1 = OS2 = R d =R z When +a, coordinate points S1 and S2 fall on the circular arc construction control line S10S20.

[0026] Furthermore, in step A2 and / or step C2, the first hanging basket is equipped with a plurality of first moving point GPS coordinate instruments, and the second hanging basket is equipped with a number of second GPS coordinate instruments corresponding to the number on the first hanging basket. Multiple concentric circular arc construction control lines are established between each first moving point GPS coordinate instrument and each second moving point GPS coordinate instrument.

[0027] Furthermore, according to the bridge design curve equation, if the continuous curved beam to be constructed between two piers has multiple segments with different slopes, then the axis of the continuous curved beam to be constructed between the two piers can be regarded as a continuous broken line in the XZ plane, and the turning point of the broken line is the slope change point of the bridge. When there are N slope change points in the continuous curved beam to be constructed between two piers, the continuous curved beam to be constructed between the two piers is divided into N+1 segments with different slopes in the XZ plane, with each slope change point as the boundary. A reference line is established for each segment of the continuous curved beam, and a total of N+1 reference lines are established. N+1 circular arc construction control lines are established corresponding to each reference line.

[0028] Furthermore, in step C4, the vertical coordinate values ​​of coordinate points S1 and S2 are calculated as follows:

[0029] Let: the coordinate point S1 be (X S1 ,Y S1 Z S1 ), the coordinates of point S2 are (X S2 ,Y S2 Z S2 ), the coordinates of point SD1 are (X SD1 ,Y SD1 Z SD1 ), the coordinates of point SD2 are (X SD2 ,Y SD2 Z SD2 );

[0030] Then: the vertical coordinates of coordinate point S1

[0031] Vertical coordinates of point S2 in,

[0032]

[0033]

[0034]

[0035] A curved continuous beam construction alignment monitoring device includes a control system, a first base point GPS coordinate instrument, a second base point GPS coordinate instrument, a first moving point GPS coordinate instrument, a second moving point GPS coordinate instrument, a first hanging basket, and a second hanging basket. The first hanging basket and the second hanging basket are respectively installed at the bridge piers on both sides. The first base point GPS coordinate instrument, the second base point GPS coordinate instrument, the first moving point GPS coordinate instrument, and the second moving point GPS coordinate instrument are all electrically connected to the control system. The first base point GPS coordinate instrument and the second base point GPS coordinate instrument are respectively installed at the center position of the beam surface of the bridge piers on both sides. The first moving point GPS coordinate instrument and the second moving point GPS coordinate instrument are respectively installed at opposite positions on the same side of the first hanging basket and the second hanging basket.

[0036] This invention has at least the following beneficial effects:

[0037] The present invention provides a method for monitoring and controlling the alignment of curved continuous beam construction. By measuring and calculating coordinate points and comparing them with a reference line established based on the bridge design curve equation, the method ensures that the first and second formwork baskets always move forward along the ideal path, guaranteeing that the curved continuous beam alignment meets design requirements. Alignment control and adjustment can be completed during the formwork's movement, with posture adjustments made after the baskets reach their designated positions. After adjustment, technical personnel review the results to achieve the alignment control target. This method reduces the tedious measurement and adjustment process previously required after the formwork's forward movement, thus improving the efficiency of formwork construction.

[0038] The curved continuous beam construction alignment monitoring and control device of the present invention monitors the coordinates of each point in real time through a first base point GPS coordinate instrument, a second base point GPS coordinate instrument, a first moving point GPS coordinate instrument, and a second moving point GPS coordinate instrument. The control system performs calculations and controls the real-time adjustment of the positions of the first and second hanging baskets, avoiding the tedious steps of manual measurement. It is convenient to use and can effectively improve construction efficiency. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Figure 1 This is a front view of the device disclosed in an embodiment of the present invention;

[0041] Figure 2 yes Figure 1 Top view;

[0042] Figure 3 This is a schematic diagram showing the positions of the arc construction control line and the arc reference line in the XY plane.

[0043] Figure 4 This is a schematic diagram of a curved continuous beam with only one slope change point.

[0044] In the diagram, 1. Control system; 2. First base point GPS coordinate instrument; 3. Second base point GPS coordinate instrument; 4. First moving point GPS coordinate instrument; 5. Second moving point GPS coordinate instrument; 6. First hanging basket; 7. Second hanging basket; 8. Cast-in-place segment; 9. Slope change point; 10. Pier. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more apparent. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] like Figures 1-3As shown in the figure, this invention discloses a curved continuous beam construction alignment monitoring device, including a control system 1, a first base point GPS coordinate instrument 2, a second base point GPS coordinate instrument 3, a first moving point GPS coordinate instrument 4, a second moving point GPS coordinate instrument 5, a first hanging basket 6, and a second hanging basket 7. The first and second hanging baskets are respectively installed at the poured sections 8 on both sides. The first, second, first moving point GPS coordinate instruments are all electrically connected to the control system. The first and second base point GPS coordinate instruments are respectively installed at the center position of the beam surface of the bridge piers 10 on both sides. The first and second moving point GPS coordinate instruments are respectively installed at the same position on the first and second hanging baskets. Specifically, the control system is installed on the truss of the first and second hanging baskets to facilitate receiving signals from each GPS coordinate instrument and issuing control signals to adjust the position and attitude of each hanging basket. The two moving point GPS coordinate instruments are respectively installed on the upper crossbeams of the two opposing hanging baskets. The first and second hanging baskets are used to bear the concrete pouring load during continuous beam construction.

[0049] This embodiment also discloses a method for monitoring the construction alignment of a curved continuous beam, the alignment monitoring method including axis monitoring and roll monitoring.

[0050] The axis monitoring specifically involves the following steps: Step A1: Install a first base point GPS coordinate instrument and a second base point GPS coordinate instrument at the center line of the beam surface of the two bridge piers, respectively. Let the coordinate point of the first base point GPS coordinate instrument be B1 and the coordinate point of the second base point GPS coordinate instrument be B2. Establish a reference line B1B2 based on the two points B1 and B2 and the bridge design curve equation (the bridge design curve equation is the equation initially set after the bridge design).

[0051] Step A2: Install a first moving-point GPS coordinate instrument on the first hanging basket and a second moving-point GPS coordinate instrument on the second hanging basket. Let the coordinate point of the first moving-point GPS coordinate instrument be S1, and the coordinate point of the second moving-point GPS coordinate instrument be S2. Establish circular arc construction control lines S10S20 based on points S1 and S2 and the radius of curvature of the hanging basket's movement path under ideal conditions. In actual construction, in steps A2 and / or C2, multiple first moving-point GPS coordinate instruments are installed on the first hanging basket, and the number of second GPS coordinate instruments corresponding to the number on the first hanging basket is installed on the second hanging basket. Multiple concentric circular arc construction control lines are established between each first moving-point GPS coordinate instrument and each second moving-point GPS coordinate instrument. Detection using multiple circular arc construction control lines can further reduce construction errors.

[0052] Step A3: During initial installation, adjust the position and angle of the hanging basket and anchor it. Fix the position of the first moving point GPS coordinate instrument and adjust the position of the second moving point GPS coordinate instrument so that the center of the arc construction control line and the reference line coincide on the XY plane. The XY plane is a plane parallel to the beam surface of the continuous curved beam to be constructed. Fix the second moving point GPS coordinate instrument.

[0053] Step A4: During each subsequent movement of the first and second hanging baskets, the control system calculates whether the real-time coordinates S1′ of the first moving point GPS coordinate instrument and the real-time coordinates S2′ of the second moving point GPS coordinate instrument are on the arc construction control line S10S20. Based on the calculation results of the control system, the direction of the hanging basket is adjusted to ensure that the axis error of the curved continuous beam meets the design requirements.

[0054] In step A4, the calculation method for determining whether coordinate points S1 and S2 lie on the arc construction control line S10S20 is as follows:

[0055] Let: the coordinate point S1 be (X S1 ,Y S1 Z S1 ), the coordinates of point S2 are (X S2 ,Y S2 Z S2 );

[0056] Coordinate point B1 is (X B1 ,Y B1 Z B1 ), the coordinates of point B2 are (X B2 ,Y B2 Z B2 );

[0057] The radius of curvature of the axis B1B2 of the curved continuous beam is Rz;

[0058] The radius of curvature of the arc construction control line S10S20 is Rd=Rz+a, where a is the difference in the radius of curvature between the reference line B1B2 and the construction monitoring line;

[0059] Therefore: the coordinates of the center O of the circular arc construction control line are (X0, Y0, Z0), where:

[0060]

[0061] Distance from coordinate point S1 to the center O of the circle

[0062] Distance from coordinate point S2 to the center O of the circle

[0063] When OS1 = OS2 = R d =R zWhen +a, coordinate points S1 and S2 fall on the circular arc construction control line S10S20. Specifically, during actual construction, through measurements by various GPS coordinate instruments and calculations by the control system, it can be ensured that the first and second hanging baskets are always on the circular arc construction control line S10S20, ensuring that the axis of the curved continuous beam meets the design requirements.

[0064] Preferably, according to the bridge design curve equation, if the curved continuous beam to be constructed between two piers has multiple segments with different slopes, then the axis of the curved continuous beam to be constructed between the two piers can be regarded as a continuous broken line in the XZ plane, and the turning point of the broken line is the slope change point of the bridge; when there are N slope change points in the curved continuous beam to be constructed between two piers, the curved continuous beam to be constructed between the two piers is divided into N+1 segments with different slopes in the XZ plane with each slope change point as the boundary, and a reference line is established for each segment of the curved continuous beam, for a total of N+1 reference lines, and N+1 circular arc construction control lines are established corresponding to each reference line.

[0065] Specifically, taking a curved continuous beam to be constructed between two bridge piers with a slope change point as an example: Figure 4 As shown, with the slope change point 9 as the boundary, the axis of the curved continuous beam to be constructed between the two piers 10 is divided into two segments of curved continuous beam with different slopes, which appear as a continuous broken line in the XZ plane. Reference lines B1B3 and B2B3 are then established using the coordinates of the first base point GPS coordinate instrument (B1), the second base point GPS coordinate instrument (B2), and the third base point coordinates (B3) calculated by the control system based on the input bridge longitudinal slope and mileage. Similarly, circular arc construction control lines S10S30 and S20S30 are established using the coordinates of the first moving point GPS coordinate instrument (S1), the second moving point GPS coordinate instrument (S2), and the third moving point coordinates (B3) calculated by the control system based on the first or second moving point GPS coordinate instrument and the input bridge longitudinal slope and mileage. The axis of the two segments of the curved continuous beam to be constructed is monitored using the reference lines B1B3 and S10S30, and the reference line B2B3 and S20S30.

[0066] In addition, since there is no hanging basket on the side of the side span (i.e., the beam located between the pier and the riverbank), only the base point GPS coordinate instrument and the moving point GPS coordinate instrument on the side corresponding to the hanging basket need to be installed. Therefore, during the initial installation, the moving point GPS coordinate instrument can be adjusted and then fixed. The rest of the installation and control principles are the same as those of the middle span (i.e., the beam located between the two piers as mentioned above).

[0067] The difference between roll monitoring and axis monitoring is that roll monitoring only requires controlling the vertical coordinate values ​​of coordinate points S1 and S2. The calculation method is as follows:

[0068] Let: the coordinate point S1 be (X S1 ,Y S1 Z S1 ), the coordinates of point S2 are (X S2 ,Y S2 Z S2 ), the coordinates of point SD1 are (X SD1 ,Y SD1 Z SD1 ), the coordinates of point SD2 are (X SD2 ,Y SD2 Z SD2 ).

[0069] Then: the vertical coordinates of coordinate point S1

[0070] Vertical coordinates of point S2 in,

[0071]

[0072]

[0073]

[0074] In summary, the curved continuous beam construction alignment monitoring device in this embodiment monitors the coordinates of each point in real time, avoiding the tedious steps of manual measurement. Through calculations performed by the control system, it controls the real-time adjustment of the positions of the first and second formwork baskets, making it convenient to use and effectively improving construction efficiency. The curved continuous beam construction alignment monitoring method in this embodiment can complete the alignment control and adjustment of the curved continuous beam during the formwork's movement, and adjust its posture after it reaches its designated position. After the adjustment is completed, technicians verify that the alignment control target has been achieved, reducing the tedious measurement and adjustment process that was previously required after the formwork moved forward, and improving the efficiency of formwork construction.

[0075] Unless otherwise stated, if any of the technical solutions disclosed in this invention specify a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this invention discloses only some numerical values ​​to illustrate the technical solutions of this invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0076] Furthermore, if the present invention discloses or relates to mutually fixedly connected components or structural parts, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral molding process).

[0077] Furthermore, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this invention include states or shapes that are similar to, analogous to, or close to those states or shapes. Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured using a one-piece molding process.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for monitoring the alignment during construction of a curved continuous beam, comprising axis monitoring and roll monitoring, characterized in that: The axis monitoring includes the following steps: Step A1: Install a first base point GPS coordinate instrument and a second base point GPS coordinate instrument at the center line of the beam surface of the two bridge piers respectively. Let the coordinate point of the first base point GPS coordinate instrument be B1 and the coordinate point of the second base point GPS coordinate instrument be B2. Establish the reference line B1B2 based on the two points B1 and B2 and the bridge design curve equation. Step A2: Install the first moving point GPS coordinate instrument on the first hanging basket and the second moving point GPS coordinate instrument on the second hanging basket. Let the coordinate point of the first moving point GPS coordinate instrument be S1 and the coordinate point of the second moving point GPS coordinate instrument be S2. Establish the circular arc construction control line S10S20 based on the two points S1 and S2 and the radius of curvature of the hanging basket movement path under ideal conditions. Step A3: During initial installation, adjust the position and angle of the hanging basket and anchor it. Fix the position of the first moving point GPS coordinate instrument and adjust the position of the second moving point GPS coordinate instrument so that the center of the arc construction control line and the reference line coincide on the XY plane. The XY plane is a plane parallel to the beam surface of the continuous curved beam to be constructed. Fix the second moving point GPS coordinate instrument. Step A4: During each subsequent movement of the first and second hanging baskets, the control system calculates whether the real-time coordinates S1′ of the first moving point GPS coordinate instrument and the real-time coordinates S2′ of the second moving point GPS coordinate instrument are on the arc construction control line S10S20. Based on the calculation results of the control system, the direction of the hanging basket is adjusted to ensure that the axis error of the curved continuous beam meets the design requirements.

2. The method for monitoring the construction alignment of a curved continuous beam according to claim 1, characterized in that: The roll monitoring includes the following steps: Step C1: Install a first base point GPS coordinate instrument and a second base point GPS coordinate instrument at the center line of the beam surface of the two bridge piers respectively. Let the coordinate point of the first base point GPS coordinate instrument be B1 and the coordinate point of the second base point GPS coordinate instrument be B2. Establish the reference line B1B2 based on the two points B1 and B2 and the bridge design curve equation. Step C2: Install the first moving point GPS coordinate instrument on the first hanging basket and the second moving point GPS coordinate instrument on the second hanging basket. Let the coordinate point of the first moving point GPS coordinate instrument be S1 and the coordinate point of the second moving point GPS coordinate instrument be S2. Establish the circular arc construction control line S10S20 based on the two points S1 and S2 and the radius of curvature of the hanging basket movement path under ideal conditions. Step C3: After the position adjustment of the first and second hanging baskets of the first construction segment is completed, the control system records the vertical coordinate values ​​SD1 and SD2 of coordinate point S1 and coordinate point S2 respectively. Step C4: When the first and second hanging baskets move forward to the next construction segment, before the first or second hanging basket is anchored, the vertical coordinate values ​​of coordinate points S1 and S2 are calculated respectively, using the system coordinate values ​​SD1 and SD2 as references, to see if they are within the allowable error range. Step C5: Based on the judgment result of step C4, adjust the positions of the first and second hanging baskets to within the allowable error range, and anchor the first and second hanging baskets to ensure that the roll error of the curved continuous beam meets the design requirements.

3. The method for monitoring the construction alignment of a curved continuous beam according to claim 1, characterized in that: In step A4, the calculation method for determining whether coordinate points S1 and S2 lie on the arc construction control line S10S20 is as follows: Let: the coordinate point S1 be (X S1 ,Y S1 Z S1 ), the coordinates of point S2 are (X S2 ,Y S2 Z S2 ); Coordinate point B1 is (X B1 ,Y B1 Z B1 ), the coordinates of point B2 are (X B2 ,Y B2 Z B2 ); The radius of curvature of the axis B1B2 of the curved continuous beam is Rz; The radius of curvature of the circular arc construction control line S10S20 is Rd=Rz+a, where a is the difference in the radius of curvature between the reference line B1B2 and the construction monitoring line; Therefore, the coordinates of the center O of the circular arc construction control line are (X0, Y0, Z0), where, Distance from coordinate point S1 to the center O of the circle Distance from coordinate point S2 to the center O of the circle When OS1 = OS2 = R d =R z When +a, coordinate points S1 and S2 fall on the circular arc construction control line S10S20.

4. The method for monitoring the construction alignment of a curved continuous beam according to claim 2, characterized in that: In step A2 and / or step C2, the first hanging basket is equipped with a plurality of first moving point GPS coordinate instruments, and the second hanging basket is equipped with a number of second GPS coordinate instruments corresponding to the number on the first hanging basket. Multiple concentric circular arc construction control lines are established between each first moving point GPS coordinate instrument and each second moving point GPS coordinate instrument.

5. The method for monitoring the construction alignment of a curved continuous beam according to claim 1, characterized in that: According to the bridge design curve equation, if the continuous curved beam to be constructed between two piers has multiple segments with different slopes, then the axis of the continuous curved beam to be constructed between the two piers can be regarded as a continuous broken line in the XZ plane, and the turning point of the broken line is the slope change point of the bridge. When there are N slope change points in the continuous curved beam to be constructed between two piers, the continuous curved beam to be constructed between the two piers is divided into N+1 segments with different slopes in the XZ plane, with each slope change point as the boundary. A reference line is established for each segment of the continuous curved beam, and a total of N+1 reference lines are established. N+1 circular arc construction control lines are established corresponding to each reference line.

6. The method for monitoring and controlling the construction alignment of a curved continuous beam according to claim 2, characterized in that: In step C4, the vertical coordinate values ​​of coordinate points S1 and S2 are calculated as follows: Let: the coordinate point S1 be (X S1 ,Y S1 Z S1 ), the coordinates of point S2 are (X S2 ,Y S2 Z S2 ), the coordinates of point SD1 are (X SD1 ,Y SD1 Z SD1 ), the coordinates of point SD2 are (X SD2 ,Y SD2 Z SD2 ); Then: the vertical coordinates of coordinate point S1 Vertical coordinates of point S2 in, 7. A device for monitoring the alignment of a curved continuous beam during construction, using the method described in any one of claims 1-6, characterized in that: The system includes a control system (1), a first base point GPS coordinate instrument (2), a second base point GPS coordinate instrument (3), a first moving point GPS coordinate instrument (4), a second moving point GPS coordinate instrument (5), a first hanging basket (6), and a second hanging basket (7). The first hanging basket and the second hanging basket are respectively installed at the cast-in-place segments (8) of the two piers. The first base point GPS coordinate instrument, the second base point GPS coordinate instrument, the first moving point GPS coordinate instrument, and the second moving point GPS coordinate instrument are all connected to the control system (1). The first base point GPS coordinate instrument and the second base point GPS coordinate instrument are respectively installed at the center of the beam surface of the two piers. The first moving point GPS coordinate instrument and the second moving point GPS coordinate instrument are respectively installed at the opposite positions on the same side of the first hanging basket and the second hanging basket.

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