A steel pipe column and conversion node integrated construction method and verticality control system

Abstract

The application provides a steel pipe column and conversion node integrated construction method and verticality control system, which comprises the following steps: establishing a theoretical model in a building information model platform; in the verticality adjustment stage of the steel pipe column, real-time collection of actual posture data and dynamic correlation with the theoretical model are performed to determine the deviation between the actual axis vector and the design axis vector; deviation correction information is generated based on the deviation, and the actual axis vector after the completion of the verticality adjustment is taken as a spatial constraint reference; a deepening design model of the conversion node is established based on the reference; collision detection is performed on the model and conflicts are classified; spatial path optimization is performed on the conflicting steel bars according to the priority rules, and perforation positioning information is generated for the steel bars that still need to pass through the column wall; collision re-inspection is performed on the updated model, and if there is a conflict, the path optimization is iterated until the final result is output. The method realizes the collaborative optimization of the verticality control of the steel pipe column and the steel bar arrangement of the conversion node, and ensures the construction precision and structural safety.

Description

Technical Field

[0001] This invention belongs to the field of reverse construction method and digital construction technology in building engineering, and specifically relates to an integrated construction method and vertical adjustment control system for steel pipe columns and conversion nodes. Background Technology

[0002] In the reverse construction method with one column and one pile, the steel pipe column is a key vertical support component during the basement construction phase. The construction of the steel pipe column involves two crucial, sequential stages: first, the verticality control during the hoisting and positioning of the steel pipe column, which directly affects whether the column meets the design posture requirements; and second, the reinforcement arrangement and connection construction during the upper transfer node construction phase, which directly determines whether the load of the upper structure can be effectively transferred to the steel pipe column.

[0003] Currently, the two stages mentioned above are treated separately in engineering practice: the verticality control during the steel pipe column hoisting and positioning stage involves measurement and sag control technology, while the reinforcement layout and connection construction during the upper transition node construction stage involves reinforcement layout and steel structure opening design. These belong to different technical fields and lack a unified data integration method. Specifically, after the steel pipe column is hoisted and positioned, its final actual axial posture is often not fed back to the transition node design stage, and node construction is still carried out according to the theoretical axis; at the same time, the reinforcement layout at the node does not fully consider the actual posture of the steel pipe column. This data gap leads to two problems: firstly, when there is a deviation between the actual axis and the theoretical axis of the lower steel pipe column, but the node construction is still carried out according to the theoretical axis, the connection accuracy between the reinforcement and the steel pipe column is difficult to guarantee; secondly, even if the verticality of the steel pipe column meets the specifications, the reinforcement layout of the upper transition node still faces construction problems independent of verticality, such as collisions and inaccurate opening positioning.

[0004] Therefore, there is an urgent need for an integrated construction method that can connect the verticality adjustment data of steel pipe columns with the design and construction data of the conversion nodes, so as to achieve coordinated optimization of the verticality control of steel pipe columns and the reinforcement layout of conversion nodes, and ensure construction accuracy and structural safety. Summary of the Invention

[0005] This invention provides an integrated construction method and verticality control system for steel pipe columns and transition nodes, which realizes the coordinated optimization of steel pipe column verticality control and reinforcement arrangement of transition nodes, ensuring construction accuracy and structural safety.

[0006] The technical solution of the present invention is as follows:

[0007] A construction method for integrating steel pipe columns and transfer nodes includes the following steps:

[0008] S1. Establish a theoretical model in the building information modeling platform. The theoretical model includes the design axis vector of the steel pipe column and the design pile top center coordinates.

[0009] S2, During the vertical adjustment stage of the steel pipe column, the actual posture data of the steel pipe column is collected in real time and dynamically associated with the theoretical model to determine the deviation between the actual axis vector and the design axis vector of the steel pipe column in real time.

[0010] S3. Based on the deviation, generate correction information to guide the vertical adjustment operation, and store the actual axis vector of the steel pipe column in the completed state after the vertical adjustment as a spatial constraint reference in the building information model platform.

[0011] S4. Using the spatial constraint benchmark as the positioning basis, a detailed design model of the conversion node area is established in the building information modeling platform. The detailed design model includes the steel structure part and the reinforcing steel part.

[0012] S5, Collision detection is performed on the detailed design model through the building information modeling platform, and the detected conflicts are classified according to the type of components that collide. The classification is at least used to distinguish between conflicts between steel bars and steel structures.

[0013] S6. Based on the priority rules established on structural stress safety and construction feasibility, the spatial path optimization is performed on the steel bars that conflict in the detailed design model. For the steel bars that still need to pass through the steel pipe column wall after optimization, the perforation positioning information is generated in the steel structure part of the detailed design model.

[0014] S7. The updated detailed design model is re-verified using the building information modeling platform. If a conflict exists, the process returns to S6 for iteration until the re-verification passes and the final result data is output.

[0015] Furthermore, the actual attitude data in step S2 includes:

[0016] A biaxial laser plumb line is installed at the top of the steel pipe column. The biaxial laser plumb line emits collimated laser beams along the X and Y directions of the steel pipe column cross section, respectively. The tilt angle of the steel pipe column in the X and Y directions is calculated by measuring the offset of the reflected light spot.

[0017] Furthermore, in step S3, generating correction information for guiding the vertical adjustment operation includes:

[0018] The building information modeling platform calculates the comprehensive deviation angle based on the tilt angle and compares the comprehensive deviation angle with the preset standard limit. If the comprehensive deviation angle exceeds the preset standard limit, a correction alarm is triggered.

[0019] The building information modeling platform calculates the correction amount based on the tilt angle, and converts the correction amount into control commands for the adjuster on the vertical adjustment frame, driving the adjuster to apply a correction force to the steel pipe column;

[0020] During the correction process, the dual-axis laser plumb bob collects the tilt angle in real time, and the building information modeling platform updates the correction amount based on the real-time tilt angle until the overall deviation angle is within the preset specification limit.

[0021] Furthermore, the calculation method for the correction amount is as follows:

[0022] Using the bottom end of the steel pipe column as the hinge point and the point of application of the plumb bob to the steel pipe column as the force application point, a cantilever beam model is established, and the horizontal correction displacements in the X and Y directions at the point of application are calculated. and The calculation formula is:

[0023] , ,

[0024] in, and These are the inclination angles of the steel pipe column in the X and Y directions, respectively, and D is the distance from the point of application to the bottom of the steel pipe column;

[0025] Will and The extension and retraction amounts of each adjuster on the vertical adjustment frame are decomposed and converted into drive commands for each adjuster.

[0026] Furthermore, the detailed design model in step S4 includes at least:

[0027] The lower steel pipe column uses the actual axis vector as the spatial constraint reference;

[0028] The upper transfer node steel structure includes transfer beams and stiffening ribs;

[0029] The upper shear wall includes vertical distribution bars, horizontal distribution bars, stirrups, structural bars, and tie bars;

[0030] Reinforcing steel bars in the surrounding frame beams and floor slabs;

[0031] In step S5, the detected conflicts are classified, including:

[0032] The first type of conflict is the conflict between reinforcing bars and steel pipe columns penetrating the wall;

[0033] The second type of conflict is the spatial collision between steel bars;

[0034] The third type of conflict is the collision between the steel reinforcement and the stiffening ribs;

[0035] It also records the location information of various conflicts and the information of the components involved;

[0036] The priority rule in step S6 is as follows:

[0037] Structural safety is the first priority, construction feasibility is the second priority, and minimum adjustment is the third priority.

[0038] Furthermore, in step S6, the arrangement of conflicting reinforcing bars is optimized, including:

[0039] According to the first priority, the position of the vertical distribution reinforcement is kept unchanged, the horizontal distribution reinforcement and the longitudinal reinforcement of the transfer beam are secondary adjustment objects, and the structural reinforcement and the tie bars are the lowest priority.

[0040] After selecting the current adjustment target based on the first priority, try to avoid it by moving horizontally, bending to avoid it, and going around it in turn based on the second priority.

[0041] Based on the third priority, the option with the smallest adjustment range among the above avoidance options is selected as the optimization result.

[0042] Furthermore, in step S6, generating perforation positioning information in the steel structure portion of the detailed design model includes:

[0043] For steel bars that still belong to the first type of conflict after optimization and adjustment, extend their axis to the column wall of the steel pipe column to determine the three-dimensional coordinates of the entry point and the exit point.

[0044] With the insertion and exit points as centers, steel bar through holes are made in the column wall of the steel pipe column;

[0045] The strength of the steel bar perforation is checked, the net cross-sectional area of ​​the steel pipe column wall after the hole is opened is calculated, and it is determined whether the bearing capacity requirement is met. If not, the hole type of the steel bar perforation is adjusted or a reinforcing component is configured.

[0046] Furthermore, step S6 also includes: identifying concrete pouring dead zone areas in the detailed design model, and generating positioning information of vent holes and / or auxiliary pouring holes on the components around the dead zone areas.

[0047] Furthermore, in step S7, the collision re-verification includes at least the following inspection items:

[0048] Does the perforated area create new conflicts with other components?

[0049] Does the concrete pouring space meet the minimum flow section requirements?

[0050] When the steel structure has been designed with openings, check whether the optimized reinforcing bars are precisely aligned with the opening positions.

[0051] The final deliverables include at least one of the following: the optimized detailed design model, detailed drawings of pre-drilled holes for steel pipe columns, reinforcement layout and positioning diagram, reinforcement cutting list, and concrete pouring construction guidance diagram.

[0052] A reverse-construction steel pipe column vertical adjustment control system includes:

[0053] The attitude sensing unit includes a biaxial laser plumb bob installed at the top of the steel pipe column and a reflective target set at the bottom of the steel pipe column, used to collect the tilt angle data of the steel pipe column in the X and Y directions in real time.

[0054] The data processing and control unit is a processing terminal running a building information modeling platform. It is communicatively connected to the attitude sensing unit and is used to receive the tilt angle data, calculate the actual axis vector, generate correction information, and drive the building information modeling platform to perform dynamic visualization updates.

[0055] The vertical adjustment execution unit includes a vertical adjustment frame that clamps the steel pipe column, multiple adjusters installed on the vertical adjustment frame, and a hydraulic control system connected to the data processing and control unit;

[0056] The hydraulic control system drives the corresponding adjuster to extend or retract based on the received correction information in order to adjust the posture of the steel pipe column.

[0057] The data processing and control unit continuously receives real-time attitude data after correction, forming a fully automatic closed-loop control until the steel pipe column reaches the completion state.

[0058] The beneficial effects of this invention are as follows:

[0059] This invention discloses an integrated construction method for steel pipe columns and conversion nodes. Through theoretical model establishment and benchmark data extraction, dynamic correlation and deviation determination between actual posture data and theoretical model, generation of deviation-based correction information and storage of spatial constraint benchmarks for actual axis vectors, establishment of a detailed design model based on spatial constraint benchmarks for positioning, collision detection and classification based on conflict types, spatial path optimization and perforation positioning information generation based on priority rules, and collision verification and iterative updates of the detailed design model, this method eliminates the data gap between the two construction stages of steel pipe column hoisting and positioning and upper conversion node construction. It achieves a closed loop of "lower measured posture → upper node precise alignment" and avoids the problem of the two stages operating independently and information fragmentation in traditional construction.

[0060] This method involves continuous data acquisition using a dual-axis laser plumb bob, real-time calculation via a building information modeling platform, automatic output of correction values, construction execution, and retesting and verification, forming a real-time closed loop with a second-based cycle. This reduces the plumb adjustment time for a single steel pipe column from the traditional 2-4 hours to 20-40 minutes.

[0061] In this method, all openings in the steel pipe column walls are precisely designed based on a building information modeling platform and completed in the factory, improving the positioning accuracy from centimeter level to millimeter level, thus avoiding damage to the mechanical properties and anti-corrosion coating of the steel pipe column caused by on-site flame cutting.

[0062] This method fundamentally eliminates the hidden danger of non-compacted concrete in densely reinforced areas by predicting concrete dead zones in the building information modeling platform and setting up ventilation holes and auxiliary pouring holes.

[0063] This method avoids the passive "problem-finding" approach of traditional construction by identifying and resolving all conflicts in advance within the building information modeling platform. Attached Figure Description

[0064] Figure 1 This is a flowchart of an integrated construction method for steel pipe columns and conversion nodes according to an embodiment of the present invention;

[0065] Figure 2 This is a schematic diagram of the detailed design model of an integrated construction method for steel pipe columns and conversion nodes according to an embodiment of the present invention.

[0066] Figure 3 This is a schematic diagram of a shear wall according to an embodiment of the present invention, which describes an integrated construction method for steel pipe columns and conversion nodes.

[0067] Figure 4 This is a schematic diagram of the conversion node area in an integrated construction method for steel pipe columns and conversion nodes according to an embodiment of the present invention.

[0068] Figure 5 This is a schematic diagram of the first type of conflict in an integrated construction method for steel pipe columns and conversion nodes according to an embodiment of the present invention.

[0069] Figure 6 This is a schematic diagram of the second type of conflict in an integrated construction method for steel pipe columns and conversion nodes according to an embodiment of the present invention.

[0070] Figure 7 This is a schematic diagram of the third type of conflict in an integrated construction method for steel pipe columns and conversion nodes according to an embodiment of the present invention.

[0071] Figure 8 This is a schematic diagram of the ventilation holes in an integrated construction method for steel pipe columns and conversion nodes according to an embodiment of the present invention.

[0072] Figure 9 This is a schematic diagram of the auxiliary pouring hole for an integrated construction method of steel pipe column and conversion node according to an embodiment of the present invention.

[0073] In the diagram: 1. Steel pipe column; 2. Transfer beam; 3. Stiffening rib; 4. Reinforcing bar; 5. Ventilation hole; 6. Auxiliary pouring hole. Detailed Implementation

[0074] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0075] refer to Figures 1 to 9 This embodiment provides an integrated construction method for steel pipe columns and conversion nodes, including the following steps: S1-S7.

[0076] S1. Establish a theoretical model in the building information modeling platform. The theoretical model includes the design axis vector of steel pipe column 1 and the design pile top center coordinates.

[0077] Specifically, a theoretical model of steel tube column 1 is created in a building information modeling platform (such as Revit, Tekla, or Bentley) based on the design drawings. This theoretical model includes the following data:

[0078] Design axis vector of steel pipe column 1 That is, the theoretical vertical vector, which serves as the benchmark for subsequent determination of the actual posture data of steel pipe column 1;

[0079] The total length H of the steel pipe column is used to determine the preset specification limit value of the comprehensive deviation angle;

[0080] The elevations of each section, including the elevation of the point of action of the plumb frame on the steel pipe column 1 and the elevation of the bottom end of the steel pipe column 1, are used to calculate the correction amount.

[0081] The coordinates of the top center of the steel pipe column 1 are used as the spatial positioning reference for the bottom hinge support point of the steel pipe column 1, providing a three-dimensional coordinate origin for model positioning and hole design.

[0082] The adjustable device on the vertical adjustment frame preferably consists of four jacks. The four jacks are evenly distributed in a horizontal circumference along the vertical adjustment frame and are respectively set at the positive and negative ends of the X direction and the positive and negative ends of the Y direction. The elevation of the point of action of the vertical adjustment frame on the steel pipe column 1 is the elevation position of the steel pipe column 1 where the jacks on the vertical adjustment frame clamp.

[0083] Step S1 establishes a digital theoretical model, providing a data benchmark for subsequent automatic control and judgment, and providing data support for the digital management and control of the entire construction process of steel pipe column 1.

[0084] S2, during the vertical adjustment stage of steel pipe column 1, the actual posture data of steel pipe column 1 is collected in real time and dynamically associated with the theoretical model to determine the deviation between the actual axis vector and the design axis vector of steel pipe column 1 in real time.

[0085] Specifically, during the vertical adjustment stage of steel pipe column 1, a biaxial laser plumb line is pre-installed on the top of steel pipe column 1 on a level ground. The biaxial laser plumb line is fixed to the top end face of steel pipe column 1 through magnetic or flange connectors to ensure that the installation base plane is perpendicular to the axis of steel pipe column 1.

[0086] The biaxial laser plumb line instrument has a built-in biaxial laser collimation module. It emits collimated laser beams along the X and Y directions of the cross-section of the steel pipe column 1 to a reflective target surface set at the bottom of the steel pipe column 1 to form reflected light spots. By measuring the offset of the reflected light spots, the tilt angle of the steel pipe column 1 in the X and Y directions is calculated in real time. .

[0087] When the steel pipe column 1 is in a known vertical state (such as when it is calibrated using an auxiliary plumb line on a flat ground), the laser plumb gauge is zeroed, the initial reading is recorded and written into the building information model platform as a reference.

[0088] The biaxial laser plumb line is connected to the processing terminal of the building information modeling platform via a fixed cable (shielded cable or optical fiber) laid along the outer wall of the steel pipe column 1. After the steel pipe column 1 is hoisted into the pile hole and positioned on the plumb line, the biaxial laser plumb line continuously collects the tilt angle at a frequency of not less than 1Hz. and tilt angle Transmitted to the processing terminal in real time.

[0089] Step S2 uses a dual-axis laser plumb bob to collect the tilt angle in real time along the X and Y directions of the cross section of the steel pipe column 1 and transmits it to the processing terminal. This realizes the automated real-time acquisition and transmission of the actual posture data of the steel pipe column 1, providing a high-frequency and high-precision data input method for subsequent real-time correction.

[0090] S3. Based on the deviation, generate correction information to guide the vertical adjustment operation, and store the actual axis vector of the steel pipe column 1 in the completed state after vertical adjustment as a spatial constraint reference in the building information model platform.

[0091] Specifically, the building information modeling platform is based on the tilt angle. Calculate the overall deviation angle and compare it with the preset standard limit. If the overall deviation angle exceeds the preset standard limit, trigger a correction alarm and pop up a correction instruction window on the building information modeling platform.

[0092] The calculation method for the overall deviation angle is as follows:

[0093]

[0094] The calculation method for the preset standard limit is as follows:

[0095] ,

[0096] in, For the comprehensive deviation angle, Let be the angle of inclination of steel pipe column 1 in the X direction. Let be the inclination angle of steel pipe column 1 in the Y direction. H is the total length of steel pipe column 1, which is a preset specification limit.

[0097] The building information modeling platform calculates the correction amount based on the tilt angle and converts the correction amount into control commands for the adjuster on the vertical adjustment frame, driving the adjuster to apply a correction force to the steel pipe column 1.

[0098] Specifically, a cantilever beam model is established with the bottom end of steel pipe column 1 as the hinge support point and the point of action of the plumb bob on steel pipe column 1 as the force application point. The horizontal correction displacements in the X and Y directions at the point of action are calculated. and .

[0099] The horizontal correction displacements in the X and Y directions at the point of application are calculated as follows:

[0100] ,

[0101] in, and These are the horizontal correction displacements in the X and Y directions at the point of application, respectively. and These are the tilt angles of steel pipe column 1 in the X and Y directions, respectively. D is the difference between the elevation of the point of action of the vertical adjustment frame on steel pipe column 1 and the elevation of the bottom of steel pipe column 1. The negative sign indicates that the correction direction is opposite to the tilt direction.

[0102] Will and It is decomposed into the extension and retraction of the adjusters on the vertical frame and converted into drive commands for each adjuster.

[0103] Preferably, the adjusters are jacks, four in number, respectively positioned in the X+, X-, Y+, and Y- directions on the horizontal plane of the vertical adjustment frame. Based on the jacks' directions and the horizontal correction displacements in the X and Y directions, the extension / retraction amounts of each jack are as follows:

[0104] The extension / retraction of the jack in the X direction =

[0105] The extension / retraction of the jack in the X direction =

[0106] The extension / retraction of the jack in the Y+ direction =

[0107] Y-direction jack extension / retraction = .

[0108] in, and These are the horizontal correction displacements in the X and Y directions at the point of application, respectively.

[0109] The building information modeling platform initiates hydraulic control commands based on the extension and retraction of each jack, and drives each jack of the vertical adjustment frame to automatically extend and retract through the hydraulic control system in order to adjust the posture of the steel pipe column 1.

[0110] Specifically, the hydraulic control system includes a programmable logic controller connected to the terminal of the building information modeling platform, a hydraulic pump, proportional valves, and displacement sensors installed on each jack.

[0111] The building information modeling platform sends the target extension / retraction amount to the programmable logic controller (PLC). The PLC adjusts the oil supply through proportional valves, driving each jack of the vertical adjustment frame to extend and retract automatically. Displacement sensors provide real-time feedback on the actual stroke, forming a closed-loop control of the hydraulic execution process.

[0112] During the correction process, the dual-axis laser plumb bob continuously collects tilt angle data in real time at a frequency of no less than 1Hz. The building information modeling platform dynamically updates the correction amount based on the real-time tilt angle data, forming a fully automatic real-time closed-loop control of "measurement → calculation → adjustment → measurement" until the comprehensive deviation angle is reduced to within the standard limit.

[0113] After the correction is completed, the laser plumb bob continuously monitors for at least 60 seconds to confirm that the overall deviation angle is within the specification limit and there is no rebound trend. The final stable tilt angle is recorded, and the actual axis vector of steel pipe column 1 is stored as a spatial constraint reference in the building information model platform.

[0114] Furthermore, on the building information modeling platform interface, the display status of steel pipe column 1 is dynamically updated based on actual posture data. Using the design axis of steel pipe column 1 as a reference, the actual axis is displayed as a superimposed colored line, with the color gradually changing according to the degree of deviation.

[0115] like It displays green;

[0116] like It displays yellow;

[0117] like It displays orange;

[0118] like It is displayed in red.

[0119] During the automatic correction process, the interface of the Building Information Modeling (BIM) platform displays the following in real time:

[0120] Real-time progress of each jack;

[0121] Overall deviation angle reduction progress bar;

[0122] The 3D visualization of steel pipe column 1 can display the model of steel pipe column 1 rotating / translating in real time, and the current actual posture data of the steel pipe pile is continuously refreshed at a frequency of no less than 1Hz. When the comprehensive deviation angle drops to within the specification limit, the interface displays a "in place" prompt and turns green.

[0123] After the actual axis vector of steel pipe column 1 is written into the building information modeling platform, it is marked "verified - completed status" and the steel pipe column 1 is switched from the "under construction" status to the "completed" status.

[0124] In step S3, the real-time comprehensive deviation angle is compared with the preset standard limit through the building information modeling platform, and the correction amount is automatically calculated to drive the adjuster to move. At the same time, the dual-axis laser plumb line continuously feeds back the tilt angle data to form a closed-loop control, realizing the automatic determination of the comprehensive deviation angle of steel pipe column 1, the automatic calculation of the correction amount, and the automatic driving of the adjuster, so as to solidify the actual axis vector of steel pipe column 1 after the correction is completed and transfer it to the subsequent transformation node modeling stage.

[0125] S4. Using the spatial constraint benchmark as the positioning basis, a detailed design model of the conversion node area is established in the building information model platform. The detailed design model includes the steel structure part and the reinforcement part.

[0126] For details, please refer to Figures 2 to 4 Using the actual axis vector of the steel pipe column 1, which has been corrected and solidified in step S3, as the positioning basis, a detailed design model of the conversion node area is established in the building information modeling platform.

[0127] The detailed design model includes at least the following components:

[0128] The lower steel pipe column 1 uses the actual axial posture after curing in S3 as the positioning reference.

[0129] The upper transfer node steel structure includes steel components such as transfer beam 2, stiffening rib 3 and ring plate, which are modeled one by one according to the specifications and positions of the design drawings;

[0130] The upper shear wall, including vertical distribution bars, horizontal distribution bars, stirrups, structural bars and tie bars, is modeled one by one according to the design drawings, accurately reflecting the diameter, spacing, bending position and spatial coordinates of each bar.

[0131] The surrounding frame beams and floor slab reinforcement bars are modeled one by one according to their actual specifications, spacing and location.

[0132] The accuracy requirements for the detailed design model are as follows: all steel bars 4 should be modeled one by one according to their actual specifications, spacing and position, and the detailed structure of steel pipe column 1, stiffening rib 3 and other steel structures should be fully expressed.

[0133] Step S4 establishes a detailed design model of the conversion node region based on the actual axis vector of the steel pipe column 1 after correction and solidification, realizing the data connection between the actual attitude data of the steel pipe column 1 during the vertical adjustment stage and the data of the conversion node design modeling stage, so as to provide digital support for subsequent collision detection and spatial path optimization.

[0134] S5, Collision detection is performed on the detailed design model through the building information model platform, and the detected conflicts are classified according to the type of components that collide. The classification is at least used to distinguish between the conflicts between the reinforcing steel 4 and the steel structure.

[0135] For details, please refer to Figures 5 to 7 The detected conflicts are classified and conflict information is recorded, including:

[0136] The first type of conflict is the wall penetration conflict between reinforcing bar 4 and steel pipe column 1: the axis of reinforcing bar 4 intersects with the wall of steel pipe column 1, that is, reinforcing bar 4 needs to pass through the wall of steel pipe column 1 according to the design path.

[0137] The recorded conflict information includes: the three-dimensional coordinates of the wall penetration location, the wall penetration angle, and the number of the relevant reinforcing bar 4;

[0138] The second type of conflict is spatial collision between two or more reinforcing bars 4: the minimum spatial distance between the axes of two or more reinforcing bars 4 is less than the sum of their radii.

[0139] The recorded conflict information includes: the three-dimensional coordinates of the collision location, the collision depth, and the collision type;

[0140] The third type of conflict is the collision between the reinforcing bar 4 and the stiffening rib 3: the end anchorage or bent section of the reinforcing bar 4 collides with the stiffening rib 3 (ring plate, vertical rib).

[0141] The recorded conflict information includes: the three-dimensional coordinates of the collision location, the numbers of the involved steel bar 4 and stiffening rib 3, and the collision depth.

[0142] Step S5 utilizes the collision detection function of the Building Information Modeling (BIM) platform in the detailed design model to detect spatial conflicts and classify and record them according to three standards. This enables the comprehensive and accurate identification of potential spatial conflicts before construction, providing complete conflict information data for subsequent spatial path optimization.

[0143] S6. Based on the priority rules established on structural stress safety and construction feasibility, the spatial path optimization is performed on the steel bars 4 that conflict in the detailed design model. For the steel bars 4 that still need to pass through the column wall of the steel pipe column 1 after optimization, the perforation positioning information is generated in the steel structure part of the detailed design model.

[0144] Specifically, the priority rules are as follows:

[0145] Structural safety is the first priority, construction feasibility is the second priority, and minimum adjustment is the third priority.

[0146] The arrangement of the conflicting rebar 4 is optimized, and the specific process is as follows:

[0147] Conflicting structural members are divided into three adjustment levels: the position of the vertical distribution reinforcement (i.e., the main load-bearing reinforcement) of the shear wall is kept unchanged first; the horizontal distribution reinforcement and the longitudinal reinforcement of the transfer beam are secondary adjustment targets; and the structural reinforcement and tie bars are the lowest priority. Adjustments are performed in the order of lowest priority first, and highest priority last.

[0148] After selecting the current adjustment target, try the following avoidance schemes in sequence: translation avoidance, that is, translate along the direction perpendicular to the axis of the rebar 4, translate by a preset distance each time, and re-perform collision detection after each translation until the conflict is eliminated or the maximum allowable translation amount is reached; bending avoidance, that is, when translation avoidance cannot eliminate the conflict, bend the rebar 4 near the conflict position, the bending angle does not exceed 30°, and the bending radius meets the minimum requirements of the specification; detour avoidance, that is, when the above two schemes cannot be implemented, replan the entire path of the rebar 4 to bypass the obstacle.

[0149] Provided that the first two priorities are met, when multiple adjustment schemes are feasible, the scheme with the smallest adjustment range is selected as the final optimization result.

[0150] If the conflict cannot be eliminated after the above adjustments, the secondary adjustment objects will be gradually promoted to the current adjustment objects according to the first priority, and the above avoidance attempt process will be repeated until all conflicts are eliminated or the steel pipe column 1 still needs to be crossed after optimization.

[0151] Furthermore, for reinforcement bar 4, which still belongs to the first type of conflict after optimization and adjustment, the following hole design process shall be executed in the detailed design model:

[0152] Extend the axis of rebar 4 to the wall of steel pipe column 1 to determine the three-dimensional coordinates of the insertion point and the exit point;

[0153] With the entry and exit points as the center, design the rebar perforation holes on the column wall of steel pipe column 1 to ensure the space for rebar insertion operation.

[0154] Among them, the hole diameter = the diameter of the reinforcing bar + the gap for the reinforcing bar construction, and the gap for the reinforcing bar construction is generally 6~10mm.

[0155] The strength of the designed rebar perforations is checked, the net cross-sectional area of ​​the steel pipe column 1 after the perforation is made, and it is determined whether the design bearing capacity requirements are met. If not, the perforation type of the rebar or the configuration of reinforcing components is adjusted.

[0156] Preferably, the hole shape for the reinforcing bar is adjusted to a long, slotted hole.

[0157] Further reference Figures 8 to 9 To address potential concrete pouring defects caused by the enclosed space and dense reinforcing bars 4 in the transition node area, the concrete flow path is simulated in the detailed design model. This identifies "dead zones" where concrete cannot flow naturally, i.e., enclosed spaces bounded by stiffening ribs 3 and / or transition beams 2 and dense reinforcing bars 4. Ventilation holes 5 and auxiliary pouring holes 6 are provided on the stiffening plates and / or transition beams 2 in these dead zone areas to ensure that air bubbles and bleed water can be discharged during concrete pouring. Preferably, the diameter of the ventilation holes 5 is 20~30mm, and the spacing between the ventilation holes 5 is ≤300mm.

[0158] Multiple ventilation holes 5 are provided at intervals along the length of the upper and lower flange plates of the transfer beam 2 at the middle position of the plate surface.

[0159] The auxiliary pouring holes 6 are located at the flange plate where the transfer beam 2 contacts the lower steel pipe column 1, and at the flange plate where the stiffening rib 3 contacts the upper shear wall.

[0160] Step S6 optimizes the arrangement of the steel reinforcement 4 and precisely designs the openings in the steel structure by translating, bending, and bypassing conflicting components according to the three-level priority rules, and designing and verifying the strength of the unavoidable steel reinforcement 4. At the same time, ventilation holes 5 and auxiliary pouring holes 6 are set on the components. This achieves the goal of minimizing the need for through-column openings and ensuring that the structural bearing capacity meets the requirements after the openings are made.

[0161] S7. The updated detailed design model is re-verified using the building information modeling platform. If a conflict exists, the process returns to S6 for iteration until the re-verification passes and the final result data is output.

[0162] The specific process is as follows:

[0163] The detailed design model should be checked for clashes at all nodes using a Building Information Modeling (BIM) platform, verifying at least the following:

[0164] Does the perforated area create new conflicts with other reinforcing bars 4 or stiffening ribs 3?

[0165] Does the concrete pouring space meet the minimum flow section requirements?

[0166] When the steel structure has been designed with openings, check whether the optimized reinforcing bar 4 is precisely aligned with the opening position.

[0167] Preferably, the concrete pouring space is ≥50mm×100mm.

[0168] If the re-verification fails, return to step S6 for iterative adjustments until all verifications pass. If the re-verification passes, output the final result.

[0169] Specifically, the final deliverables should include at least one of the following:

[0170] Optimized detailed design model;

[0171] Detailed drawings of pre-drilled holes for steel pipe column 1, including the positioning, diameter, angle and processing requirements of rebar perforation, ventilation hole 5 and auxiliary pouring hole 6, serve as the basis for pre-drilling holes in the steel structure processing plant;

[0172] Reinforcing bar 4 layout and positioning diagram, i.e., the spatial positioning and column penetration path of reinforcing bars 4 in each direction;

[0173] The rebar cutting list 4 is the precise cutting length based on the optimized layout path;

[0174] Construction guidance diagram for concrete pouring.

[0175] Step S7 involves performing a full-node collision re-verification on the detailed design model and returning to S6 for iterative adjustment if the re-verification fails, until all conflicts are eliminated. This allows for the accurate determination of the opening location before construction, avoiding damage to the steel pipe column 1 caused by on-site cutting.

[0176] The above method eliminates the data gap between the two construction stages of steel pipe column 1 hoisting and positioning and upper conversion node construction by establishing a theoretical model and extracting benchmark data, dynamically linking actual posture data with theoretical model and determining deviation, generating deviation-based correction information and storing spatial constraint benchmarks of actual axis vectors, establishing a detailed design model based on spatial constraint benchmarks for positioning, collision detection and classification based on conflict types, spatial path optimization based on priority rules and generating perforation positioning information, and collision verification and iterative updating of the detailed design model. It realizes a closed loop of "lower measured posture → upper node precise alignment" and avoids the problem of the two stages operating independently and information being fragmented in traditional construction.

[0177] This embodiment provides a reverse construction method for adjusting the verticality of steel pipe columns, including the following units: an attitude sensing unit, a data processing and control unit, and a verticality execution unit.

[0178] The attitude sensing unit includes a biaxial laser plumb bob installed at the top of the steel pipe column 1 and a reflective target surface set at the bottom of the steel pipe column 1, which is used to collect the tilt angle data of the steel pipe column 1 in the X and Y directions in real time.

[0179] The data processing and control unit is a processing terminal running a building information modeling platform. It communicates with the attitude sensing unit to receive tilt angle data, calculate the actual axis vector, generate correction information, and drive the building information modeling platform to perform dynamic visualization updates.

[0180] The vertical adjustment unit includes a vertical adjustment frame that clamps the steel pipe column 1, multiple adjusters mounted on the vertical adjustment frame, and a hydraulic control system connected to the data processing and control unit.

[0181] The hydraulic control system drives the corresponding adjuster to extend or retract based on the received correction information in order to adjust the posture of the steel pipe column 1.

[0182] The data processing and control unit continuously receives real-time attitude data after correction, forming a fully automatic closed-loop control until the steel pipe column 1 reaches the completion state.

[0183] The above system, through the coordinated operation of the attitude sensing unit, data processing and control unit and the vertical adjustment execution unit, realizes real-time data acquisition, closed-loop control and visual monitoring of the vertical adjustment process of steel pipe column 1, enabling steel pipe column 1 to reach the completed state quickly and accurately, effectively improving the vertical adjustment accuracy and construction efficiency of steel pipe column 1 in reverse construction method.

[0184] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A construction method for integrating steel pipe columns and transition nodes, characterized in that, Includes the following steps: S1. Establish a theoretical model in the building information modeling platform. The theoretical model includes the design axis vector of the steel pipe column and the design pile top center coordinates. S2, During the vertical adjustment stage of the steel pipe column, the actual posture data of the steel pipe column is collected in real time and dynamically associated with the theoretical model to determine the deviation between the actual axis vector and the design axis vector of the steel pipe column in real time. S3. Based on the deviation, generate correction information to guide the vertical adjustment operation, and store the actual axis vector of the steel pipe column in the completed state after the vertical adjustment as a spatial constraint reference in the building information model platform. S4. Using the spatial constraint benchmark as the positioning basis, a detailed design model of the conversion node area is established in the building information modeling platform. The detailed design model includes the steel structure part and the reinforcing steel part. S5, Collision detection is performed on the detailed design model through the building information modeling platform, and the detected conflicts are classified according to the type of components that collide. The classification is at least used to distinguish between conflicts between steel bars and steel structures. S6. Based on the priority rules established on structural stress safety and construction feasibility, the spatial path optimization is performed on the steel bars that conflict in the detailed design model. For the steel bars that still need to pass through the steel pipe column wall after optimization, the perforation positioning information is generated in the steel structure part of the detailed design model. S7. The updated detailed design model is re-verified using the building information modeling platform. If a conflict exists, the process returns to S6 for iteration until the re-verification passes and the final result data is output.

2. The integrated construction method for steel pipe columns and transition nodes as described in claim 1, characterized in that, The actual attitude data in step S2 includes: A biaxial laser plumb line is installed at the top of the steel pipe column. The biaxial laser plumb line emits collimated laser beams along the X and Y directions of the steel pipe column cross section, respectively. The tilt angle of the steel pipe column in the X and Y directions is calculated by measuring the offset of the reflected light spot.

3. The integrated construction method for steel pipe columns and transition nodes as described in claim 2, characterized in that, In step S3, correction information for guiding the vertical adjustment operation is generated, including: The building information modeling platform calculates the comprehensive deviation angle based on the tilt angle and compares the comprehensive deviation angle with the preset standard limit. If the comprehensive deviation angle exceeds the preset standard limit, a correction alarm is triggered. The building information modeling platform calculates the correction amount based on the tilt angle, and converts the correction amount into control commands for the adjuster on the vertical adjustment frame, driving the adjuster to apply a correction force to the steel pipe column; During the correction process, the dual-axis laser plumb bob collects the tilt angle in real time, and the building information modeling platform updates the correction amount based on the real-time tilt angle until the overall deviation angle is within the preset specification limit.

4. The integrated construction method for steel pipe columns and transition nodes as described in claim 3, characterized in that, The correction amount is calculated as follows: Using the bottom end of the steel pipe column as the hinge point and the point of application of the plumb bob to the steel pipe column as the force application point, a cantilever beam model is established, and the horizontal correction displacements in the X and Y directions at the point of application are calculated. and The calculation formula is: ， ， in, and These are the inclination angles of the steel pipe column in the X and Y directions, respectively, and D is the distance from the point of application to the bottom of the steel pipe column; Will and The extension and retraction amounts of each adjuster on the vertical adjustment frame are decomposed and converted into drive commands for each adjuster.

5. The integrated construction method for steel pipe columns and transition nodes as described in claim 1, characterized in that, The detailed design model in step S4 includes at least: The lower steel pipe column uses the actual axis vector as the spatial constraint reference; The upper transfer node steel structure includes transfer beams and stiffening ribs; The upper shear wall includes vertical distribution bars, horizontal distribution bars, stirrups, structural bars, and tie bars; Reinforcing steel bars in the surrounding frame beams and floor slabs; In step S5, the detected conflicts are classified, including: The first type of conflict is the conflict between reinforcing bars and steel pipe columns penetrating the wall; The second type of conflict is the spatial collision between steel bars; The third type of conflict is the collision between the steel reinforcement and the stiffening ribs; It also records the location information of various conflicts and the information of the components involved; The priority rule in step S6 is as follows: Structural safety is the first priority, construction feasibility is the second priority, and minimum adjustment is the third priority.

6. The integrated construction method for steel pipe columns and transition nodes as described in claim 5, characterized in that, In step S6, the arrangement of the conflicting reinforcing bars is optimized, including: According to the first priority, the position of the vertical distribution reinforcement is kept unchanged, the horizontal distribution reinforcement and the longitudinal reinforcement of the transfer beam are secondary adjustment objects, and the structural reinforcement and the tie bars are the lowest priority. After selecting the current adjustment target based on the first priority, try to avoid it by moving horizontally, bending to avoid it, and going around it in turn based on the second priority. Based on the third priority, the option with the smallest adjustment range among the above avoidance options is selected as the optimization result.

7. The integrated construction method for steel pipe columns and transition nodes as described in claim 5, characterized in that, In step S6, perforation positioning information is generated in the steel structure portion of the detailed design model, including: For steel bars that still belong to the first type of conflict after optimization and adjustment, extend their axis to the column wall of the steel pipe column to determine the three-dimensional coordinates of the entry point and the exit point. With the insertion and exit points as centers, steel bar through holes are made in the column wall of the steel pipe column; The strength of the steel bar perforation is checked, the net cross-sectional area of ​​the steel pipe column wall after the hole is opened is calculated, and it is determined whether the bearing capacity requirement is met. If not, the hole type of the steel bar perforation is adjusted or a reinforcing component is configured.

8. The integrated construction method for steel pipe columns and transition nodes as described in claim 1, characterized in that, Step S6 further includes: identifying concrete pouring dead zone areas in the detailed design model, and generating positioning information of vent holes and / or auxiliary pouring holes on the components around the dead zone areas.

9. The integrated construction method for steel pipe columns and transition nodes as described in claim 1, characterized in that, In step S7, the collision re-verification includes at least the following inspection items: Does the perforated area create new conflicts with other components? Does the concrete pouring space meet the minimum flow section requirements? When the steel structure has been designed with openings, check whether the optimized reinforcing bars are precisely aligned with the opening positions. The final deliverables include at least one of the following: the optimized detailed design model, detailed drawings of pre-drilled holes for steel pipe columns, reinforcement layout and positioning diagram, reinforcement cutting list, and concrete pouring construction guidance diagram.

10. A steel pipe column plumb adjustment control system, characterized in that, include: The attitude sensing unit includes a biaxial laser plumb bob installed at the top of the steel pipe column and a reflective target set at the bottom of the steel pipe column, used to collect the tilt angle data of the steel pipe column in the X and Y directions in real time. The data processing and control unit is a processing terminal running a building information modeling platform. It is communicatively connected to the attitude sensing unit and is used to receive the tilt angle data, calculate the actual axis vector, generate correction information, and drive the building information modeling platform to perform dynamic visualization updates. The vertical adjustment execution unit includes a vertical adjustment frame that clamps the steel pipe column, multiple adjusters installed on the vertical adjustment frame, and a hydraulic control system connected to the data processing and control unit; The hydraulic control system drives the corresponding adjuster to extend or retract based on the received correction information in order to adjust the posture of the steel pipe column. The data processing and control unit continuously receives real-time attitude data after correction, forming a fully automatic closed-loop control until the steel pipe column reaches the completion state.

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