Positioning measurement method for anchor pipe of steel anchor box

Abstract

The invention discloses a positioning and measuring method for an anchor pipe of a steel anchor box, belongs to the technical field of steel structure construction, and solves the technical problems that a positioning and measuring method for an anchor pipe of an anchor box in the prior art is complex, tedious in process and non-ideal in positioning and measuring precision. According to the positioning and measuring method, digital modeling is carried out according to a design drawing, coordinates and elevation are exported through an established model, the circle center of the end face of the anchor pipe serves as an observation point, and the anchor pipe installed in the main tower section is accurately positioned by measuring and adjusting the circle center of the anchor pipe. The anchor pipe in the anchor box is accurately positioned through a total station three-dimensional coordinate measuring method, and the positioning precision of the anchor pipe in the anchor box can be effectively guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure construction, and particularly relates to a positioning and measuring method for a steel anchor box anchor pipe. Background Art

[0002] The cable-stayed bridge is a highly statically indeterminate structure consisting of three basic components: the main tower, the cable-stayed cable and the main beam. It has the characteristics of large spanning capacity, beautiful appearance and cantilever construction.

[0003] Cable-stayed bridges can be divided into concrete cable-stayed bridges, steel cable-stayed bridges, hybrid beam cable-stayed bridges, and composite beam cable-stayed bridges according to the different materials used in their construction. Both hybrid beam cable-stayed bridges and composite beam cable-stayed bridges are made of a combination of two different materials. The difference between a hybrid beam cable-stayed bridge and a composite beam cable-stayed bridge is that a hybrid beam cable-stayed bridge is a cable-stayed bridge with different materials in the longitudinal axis of the structure, and a composite beam cable-stayed bridge is a cable-stayed bridge with different materials in the same cross-section of the structure. A hybrid composite beam cable-stayed bridge has the characteristics of both a hybrid cable-stayed bridge and a composite beam cable-stayed bridge, that is, the side span uses a concrete main beam, and the middle span uses a steel-concrete composite beam.

[0004] Cable-stayed bridges can be classified into anchor box type anchor structure, pin hinge type anchor structure, anchor pipe type anchor structure and tension plate type anchor structure according to the bridge structure. The anchor box type anchor structure is a box-shaped structure welded on the outside of the web, and the cable is anchored on the pressure plate of the anchor box. It is mainly composed of two anchor plates, a pressure plate, a stiffening plate between the anchor plates, a stiffening plate on the anchor plate, and a pad.

[0005] The cable-stayed steel cable bridge includes a steel anchor box structure. The steel anchor box is difficult to process and has high precision requirements. Therefore, the positioning and measurement of the anchor box and anchor pipe are particularly critical for the cable bridge. During the processing of traditional cable-stayed steel cable bridges, the positioning and measurement methods of the anchor box and anchor pipe are complicated, the process is cumbersome, and the positioning and measurement accuracy is not ideal.

[0006] Therefore, designing a method for positioning and measuring a steel anchor box anchor pipe so as to quickly and accurately position and measure the steel anchor box anchor pipe of a cable-stayed steel cable bridge has become a technical problem that needs to be urgently solved by technicians in the relevant technical field. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a positioning and measuring method for an anchor pipe of a steel anchor box, so as to at least solve part of the above technical problems.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A method for positioning and measuring an anchor pipe of a steel anchor box is disclosed. The method comprises the following steps: digitally modeling is performed according to a design drawing, coordinates and elevations are derived from the model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0010] Furthermore, the constructed model is a takel model.

[0011] Further, the following steps are included:

[0012] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0013] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0014] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0015] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0016] Furthermore, in step 1, when the Leica total station is used for full-course tracking measurement, the accuracy is controlled within 1 mm.

[0017] Furthermore, in step 2, when cutting material parts, all material parts are cut using CNC plasma laser according to the model.

[0018] Furthermore, in step 3, the positioning plate is a cross-shaped positioning plate or a straight-line positioning plate with a center point mark.

[0019] Furthermore, in step 4, when the center position of the anchor pipe in the main tower segment is measured spatially using a Leica total station, the positioning plate used to mark the center position of the anchor pipe in the main tower segment can be fixed after the accuracy is controlled within 2 mm.

[0020] Furthermore, in step 4, when the center position of the anchor pipe in the main tower segment is measured spatially on site using a Leica total station, the measurement is performed when the ambient temperature is lower than 35°C.

[0021] Furthermore, in step 4, if the on-site steel structure has just been welded or fire-calibrated, it is necessary to wait until the steel structure cools down to room temperature before using the Leica total station to spatially measure the center position of the anchor pipe in the main tower segment.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The invention is scientifically and reasonably designed, simple and feasible, and easy to operate in the workshop; the measurement work related to the anchor box can be completed in the factory at one time, and no secondary measurement is required at the installation site. The anchor pipe of the invention is accurately positioned, which is convenient for on-site installation and verification.

[0024] The present invention uses a total station three-dimensional coordinate measurement method to accurately position the anchor pipe in the anchor box, which can effectively ensure the positioning accuracy of the anchor pipe in the anchor box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the flow of the positioning measurement method of the present invention.

[0026] Figure 2 It is a schematic diagram of a cross-shaped positioning plate with a center mark of the present invention.

[0027] Figure 3 It is a schematic diagram of a straight-line positioning plate with a center mark of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Example 1.

[0030] like Figure 1-Figure 3 As shown, the present invention provides a method for positioning and measuring a steel anchor box anchor pipe, which is characterized in that digital modeling is carried out according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0031] The invention is scientifically and reasonably designed, simple and feasible, and easy to operate in the workshop. The invention can complete the measurement work related to the anchor box in the factory at one time, and does not need to do a secondary measurement at the installation site. The anchor pipe of the invention is accurately positioned, which is convenient for on-site installation and verification.

[0032] The present invention uses a total station three-dimensional coordinate measurement method to accurately position the anchor pipe in the anchor box, which can effectively ensure the positioning accuracy of the anchor pipe in the anchor box.

[0033] Example 2.

[0034] like Figure 1-Figure 3 As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0035] The model constructed is the takel model.

[0036] Based on Example 1, this Example 2 provides a more preferred method for modeling, specifically: the model built is a takel model. Such a design can effectively ensure the positioning accuracy of the anchor pipe in the anchor box.

[0037] Example 3.

[0038] like Figure 1-Figure 3 As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0039] The model constructed is the takel model.

[0040] The following steps are involved:

[0041] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0042] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0043] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0044] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0045] Based on Example 2, this Example 3 provides a more preferred method for positioning measurement, specifically: the positioning measurement method includes the following steps:

[0046] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0047] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0048] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0049] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0050] Such a design is scientific, reasonable, simple and feasible, and easy to operate in the workshop. The present invention can complete the measurement work related to the anchor box in the factory at one time, and does not need to do a secondary measurement at the installation site. The anchor pipe of the present invention is accurately positioned, which is convenient for on-site installation and verification.

[0051] The present invention uses a total station three-dimensional coordinate measurement method to accurately position the anchor pipe in the anchor box, which can effectively ensure the positioning accuracy of the anchor pipe in the anchor box.

[0052] Example 4.

[0053] like Figure 1-Figure 3 As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0054] The model constructed is the takel model.

[0055] The following steps are involved:

[0056] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0057] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0058] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0059] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0060] In step 1, when the Leica total station is used for full-course tracking measurement, the accuracy is controlled within 2 mm.

[0061] Based on Example 3, this Example 4 provides a more preferred method for positioning measurement, specifically: when using a Leica total station to track and measure throughout the process, the accuracy is controlled within 2 mm. Using a Leica total station to track and measure throughout the process and control the accuracy within 2 mm is scientific and reasonable, simple and feasible, and easy to operate in the workshop. The present invention can complete the measurement work related to the anchor box in the factory at one time, and there is no need to do a secondary measurement at the installation site. The anchor pipe of the present invention is accurately positioned, which is convenient for on-site installation review.

[0062] Example 5.

[0063] like Figure 1-Figure 3As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0064] The model constructed is the takel model.

[0065] The following steps are involved:

[0066] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0067] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0068] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0069] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0070] In step 2, when cutting material parts, all material parts are cut by CNC plasma laser according to the model.

[0071] Based on Example 3, this Example 5 provides a more preferred method for positioning measurement, specifically: in step 2, when cutting material parts, all material parts are cut by CNC plasma laser according to the model. Cutting by CNC plasma laser is scientific and reasonable, simple and feasible, and easy to operate in the workshop. The present invention can complete the measurement work related to the anchor box in the factory at one time, and no secondary measurement is required at the installation site. The anchor pipe of the present invention is accurately positioned, which is convenient for on-site installation review.

[0072] Example 6.

[0073] like Figure 1-Figure 3 As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0074] The model constructed is the takel model.

[0075] The following steps are involved:

[0076] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0077] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0078] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0079] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0080] In step 3, the positioning plate is a cross-shaped positioning plate or a straight-shaped positioning plate.

[0081] Based on Example 3, this Example 6 provides a more preferred method for positioning measurement, specifically: in step 3, the positioning plate is a cross-shaped positioning plate or a straight-line positioning plate. The positioning plate adopts a cross-shaped positioning plate or a straight-line positioning plate, which is scientific and reasonable, simple and feasible, and easy to operate in the workshop. The present invention can complete the measurement work related to the anchor box in the factory at one time, and no secondary measurement is required at the installation site. The anchor pipe of the present invention is accurately positioned, which is convenient for on-site installation review.

[0082] Example 7.

[0083] like Figure 1-Figure 3 As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0084] The model constructed is the takel model.

[0085] The following steps are involved:

[0086] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0087] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0088] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0089] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0090] In step 4, when the center position of the anchor pipe in the main tower segment is measured spatially using a Leica total station, the positioning plate used to mark the center position of the anchor pipe in the main tower segment can be fixed after the accuracy is controlled within 2 mm.

[0091] Based on Example 3, this Example 7 provides a more preferred method for positioning measurement, specifically: in step 4, when the center position of the anchor pipe in the main tower segment is measured spatially using the Leica total station, the positioning plate used to mark the center position of the anchor pipe in the main tower segment can be fixed after the accuracy is controlled within 2 mm. Such a design is scientific and reasonable, simple and feasible, and easy to operate in the workshop. The present invention can complete the measurement work related to the anchor box in the factory at one time, and there is no need for secondary measurement at the installation site. The anchor pipe of the present invention is accurately positioned, which is convenient for on-site installation review.

[0092] Example 8.

[0093] like Figure 1-Figure 3 As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0094] The model constructed is the takel model.

[0095] The following steps are involved:

[0096] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0097] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0098] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0099] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0100] In step 4, when the center position of the anchor pipe in the main tower segment is measured spatially on site using a Leica total station, the measurement is performed when the ambient temperature is lower than 35°C.

[0101] Based on Example 3, this Example 8 provides a more preferred method for positioning measurement, specifically: in step 4, when the Leica total station is used on-site to spatially measure the center position of the anchor pipe in the main tower segment, the measurement is performed when the ambient temperature is lower than 35°C. During hot weather, measurements are performed between 8 and 11 a.m. to avoid deformation of high-temperature components and thus affect the positioning accuracy of the anchor pipe. Such a design is scientific and reasonable, simple and feasible, and easy to operate in the workshop. The present invention can complete the measurement work related to the anchor box in the factory at one time, and there is no need for secondary measurement at the installation site. The anchor pipe of the present invention is accurately positioned, which is convenient for on-site installation review.

[0102] Example 9.

[0103] like Figure 1-Figure 3 As shown, the present invention provides a positioning and measuring method for a steel anchor box anchor pipe. Digital modeling is performed according to a design drawing, coordinates and elevations are derived using the constructed model, the center of the anchor pipe end face is used as an observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

[0104] The model constructed is the takel model.

[0105] The following steps are involved:

[0106] Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model;

[0107] Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes;

[0108] Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe;

[0109] Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

[0110] In step 4, when the center position of the anchor pipe in the main tower segment is measured spatially on site using a Leica total station, the measurement is performed when the ambient temperature is lower than 35°C.

[0111] In step 4, if the on-site steel structure has just been welded or fire-calibrated, it is necessary to wait until the steel structure cools down to room temperature before using the Leica total station to spatially measure the center position of the anchor pipe in the main tower segment.

[0112] Based on Example 8, this Example 9 provides a more preferred method for positioning measurement, specifically: in step 4, if the on-site steel component has just completed welding or fire calibration, it is necessary to wait until the steel component cools to room temperature before using the Leica total station to spatially measure the center position of the anchor pipe in the main tower segment. During hot weather, measurements are performed between 8 and 11 a.m. to avoid deformation of high-temperature components and thus affect the positioning accuracy of the anchor pipe (the measurement should also be performed after the component is welded and the fire calibration is cooled to room temperature). Such a design is scientific and reasonable, simple and feasible, and easy to operate in the workshop. The present invention can complete the measurement work related to the anchor box in the factory at one time, and there is no need for secondary measurement at the installation site. The anchor pipe of the present invention is accurately positioned, which is convenient for on-site installation review.

[0113] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solution of the present invention, but not to limit it, and certainly not to limit the patent scope of the present invention. Any changes or modifications that have no substantial significance on the main design concept and spirit of the present invention, which solve technical problems consistent with the present invention, should be included in the protection scope of the present invention; in addition, the direct or indirect application of the technical solution of the present invention in other related technical fields should also be included in the patent protection scope of the present invention.

Claims

1. A method for positioning and measuring a steel anchor box anchor pipe, characterized in that: Digital modeling is carried out according to the design drawings, and the coordinates and elevations are derived from the constructed model. The center of the anchor pipe end face is used as the observation point, and the anchor pipe installed in the main tower segment is accurately positioned by measuring and adjusting the center of the anchor pipe.

2. A method for positioning and measuring a steel anchor box anchor pipe according to claim 1, characterized in that: The model constructed is the takel model.

3. A method for positioning and measuring a steel anchor box anchor pipe according to claim 1 or 2, characterized in that: The following steps are involved: Step 1: The production workshop sets up the tooling frame according to the model, and each step is tracked and measured by the Leica total station according to the coordinate model; Step 2: Cutting of materials and parts, and assembly and welding of anchor boxes; Step 3: Use laser to cut out a positioning plate with a center mark according to the specifications of the anchor pipe; Step 4: Use computer to simulate the center position of the anchor pipe in the main tower segment in advance, and use Leica total station to measure the center position of the anchor pipe in the main tower segment on site. Then use a positioning plate with a center mark on site to accurately mark the center position of the anchor pipe in the main tower segment.

4. A method for positioning and measuring a steel anchor box anchor pipe according to claim 3, characterized in that: In step 1, when the Leica total station is used for full-course tracking measurement, the accuracy is controlled within 1 mm.

5. The method for positioning and measuring a steel anchor box anchor pipe according to claim 3, characterized in that: In step 2, when cutting material parts, all material parts are cut by CNC plasma laser according to the model.

6. The method for positioning and measuring a steel anchor box anchor pipe according to claim 3, characterized in that: In step 3, the positioning plate is a cross-shaped positioning plate or a straight-shaped positioning plate.

7. The method for positioning and measuring a steel anchor box and anchor pipe according to claim 3, characterized in that: In step 4, when the center position of the anchor pipe in the main tower segment is measured spatially using a Leica total station, the positioning plate used to mark the center position of the anchor pipe in the main tower segment can be fixed after the accuracy is controlled within 2 mm.

8. The method for positioning and measuring a steel anchor box and anchor pipe according to claim 3, characterized in that: In step 4, when the center position of the anchor pipe in the main tower segment is measured spatially on site using a Leica total station, the measurement is performed when the ambient temperature is lower than 35°C.

9. A method for positioning and measuring a steel anchor box and anchor pipe according to claim 8, characterized in that: In step 4, if the on-site steel structure has just been welded or fire-calibrated, it is necessary to wait until the steel structure cools down to room temperature before using the Leica total station to spatially measure the center position of the anchor pipe in the main tower segment.

Images