Pile cap steel bar three-dimensional reconstruction and optimized arrangement method and system based on allplan platform

Abstract

The application provides a method and system for three-dimensional reconstruction and optimized arrangement of a pile cap steel bar based on an Allplan platform, and the method comprises the following steps: obtaining three-dimensional information of a pile head steel bar and a concrete cushion, and constructing a three-dimensional model of the pile head steel bar and the concrete cushion; constructing a three-dimensional model of a bottom steel bar mesh of the pile cap; performing collision checking on the pile head steel bar and the bottom steel bar mesh of the pile cap, and obtaining collision points and collision depths of the colliding steel bars; counting the collision points and the collision depths of the colliding steel bars in a range of the pile head steel bar, and translating each colliding steel bar by the maximum collision depth; performing collision checking on the pile head steel bar and the bottom steel bar mesh of the pile cap again, and translating each colliding steel bar by the maximum collision depth again until there is no colliding steel bar. The application can guide the industrialized production and installation of the pile cap steel bar, improve construction quality and work efficiency, avoid problems such as rework and material waste, save construction cost, and promote the improvement of the prefabrication rate of the bridge pile cap steel bar parts.

Description

Technical Field

[0001] This invention relates to the field of pile cap reinforcement optimization layout technology, specifically to a method and system for three-dimensional reconstruction and optimization layout of pile cap reinforcement based on the Allplan platform. Background Technology

[0002] Traditional pile caps employ an independent design model for pile head, pile cap, and pier, failing to consider the collision and interference between pile head reinforcement and pier reinforcement. Furthermore, the use of loosely tied reinforcement and cast-in-place concrete construction easily leads to misalignment of the pile head reinforcement after construction, resulting in significant discrepancies with the design drawings. This results in existing pile caps exhibiting problems such as disordered bottom reinforcement arrangement, inconsistent reinforcement spacing, difficulty in ensuring protective layer thickness, and severe reinforcement collisions. With the transformation and upgrading of the traditional construction industry and the trend towards industrialized and intelligent bridge construction, improving the reinforcement structure and design of pile caps, and innovating industrialized construction processes for pile cap reinforcement, is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a method and system for three-dimensional reconstruction and optimized layout of bridge abutment reinforcement based on the Allplan platform. Through three-dimensional laser scanning and BIM technology, a three-dimensional model of the bridge abutment reinforcement is reconstructed based on the Allplan platform, collision checks are conducted to optimize the layout, guiding the industrial production and installation of bridge abutment reinforcement, improving construction quality and efficiency, avoiding rework and material waste, saving construction costs, and promoting the prefabrication rate of bridge abutment reinforcement components.

[0004] To address the aforementioned technical problems, in a first aspect, the present invention provides a method for three-dimensional reconstruction and optimized arrangement of foundation reinforcement based on the Allplan platform, comprising:

[0005] Obtain the three-dimensional information of the pile head reinforcement and concrete cushion layer, and construct a three-dimensional model of the pile head reinforcement and concrete cushion layer.

[0006] Construct a three-dimensional model of the steel reinforcement mesh at the bottom of the foundation;

[0007] Collision checks are performed on the pile head reinforcement and the bottom reinforcement mesh of the pile cap to obtain the collision points and collision depths of the colliding reinforcements. The colliding reinforcements include the reinforcements in the bottom reinforcement mesh of the pile cap that collide with the pile head reinforcement.

[0008] The collision points and collision depths of the colliding reinforcing bars within the range of the pile head reinforcing bars are statistically analyzed, the maximum collision depth of each colliding reinforcing bar is determined, and each colliding reinforcing bar is translated based on the maximum collision depth.

[0009] The pile head reinforcement and the bottom reinforcement mesh of the pile cap are checked again for collision. Based on the collision check results, the maximum collision depth of each colliding reinforcement is determined. Each colliding reinforcement is then translated again at the maximum collision depth until there are no colliding reinforcements.

[0010] In some embodiments, the method for determining the range of the pile head reinforcement includes:

[0011] The range of the pile head reinforcement for each pile head is determined as follows: Obtain the coordinates (x, y, z) of all the vertices of the pile head reinforcement for a given pile head. The range between the maximum and minimum values ​​of the x-coordinate is taken as the length range of the pile head reinforcement, and the range between the maximum and minimum values ​​of the y-coordinate is taken as the width range of the pile head reinforcement. The range of the pile head reinforcement for that pile head is determined based on the length and width ranges. Among them, the x-direction is parallel to the transverse reinforcement in the bottom reinforcement mesh of the pile cap, the y-direction is parallel to the longitudinal reinforcement in the bottom reinforcement mesh of the pile cap, and the z-direction is perpendicular to the plane containing the x-direction and the y-direction.

[0012] In some embodiments, the method of translating each colliding rebar by the maximum collision depth includes:

[0013] Determine whether the axes of the pile head reinforcement and the colliding reinforcement intersect. If they do, translate along either of the two directions perpendicular to the colliding reinforcement in the plane containing the x and y directions. The translation distance is equal to the maximum collision depth.

[0014] Furthermore, if the axes of the pile head reinforcement and the colliding reinforcement do not intersect, then the pile head reinforcement is translated according to the arrangement direction of the colliding reinforcement:

[0015] If the colliding reinforcement is a transverse reinforcement, then determine the misalignment relationship between the colliding reinforcement and the pile head reinforcement. If the axis of the colliding reinforcement is located on the y-direction side of the axis of the pile head reinforcement, then the colliding reinforcement is translated along the y-direction, and the translation distance is equal to the maximum collision depth. If the axis of the colliding reinforcement is located on the -y-direction side of the axis of the pile head reinforcement, then the colliding reinforcement is translated along the -y-direction, and the translation distance is equal to the maximum collision depth.

[0016] If the colliding reinforcement is a longitudinal reinforcement, then determine the misalignment relationship between the colliding reinforcement and the pile head reinforcement. If the axis of the colliding reinforcement is located on one side of the axis of the pile head reinforcement in the x direction, then the colliding reinforcement is translated along the x direction, and the translation distance is equal to the maximum collision depth. If the axis of the colliding reinforcement is located on one side of the axis of the pile head reinforcement in the -x direction, then the colliding reinforcement is translated along the -x direction, and the translation distance is equal to the maximum collision depth.

[0017] In some embodiments, if a collision point still exists after a certain colliding steel bar has been translated n times, then the colliding steel bar is tilted and repositioned.

[0018] Furthermore, methods for tilting and adjusting include:

[0019] If a colliding rebar still has a collision point after n translations, calculate the distances between all current collision points and the reference point. Based on the distances and collision depths of all current collision points and the reference point, take the collision point with the maximum collision depth during the last translation of the colliding rebar as the reference point. Keep the distance between the reference point and the pile head rebar constant, and use the reference point as the center of rotation. Calculate the rotation angle of the colliding rebar when it separates from the pile head rebar at each collision point, determine the maximum rotation angle of the colliding rebar, and gradually rotate the colliding rebar to the maximum rotation angle.

[0020] If, after the colliding reinforcing bar rotates to its maximum rotation angle, there is no point of collision between the colliding reinforcing bar and the pile head reinforcing bar, then the optimized arrangement of the colliding reinforcing bar is completed.

[0021] Furthermore, methods for tilting and adjusting include:

[0022] If a new collision point appears between the colliding rebar and the pile head rebar as the rebar gradually rotates to its maximum rotation angle, the number of collision points when the rebar rotates to different angle ranges is counted. The number of collision points corresponding to different angle ranges is compared, and the angle range corresponding to the minimum number of collision points is taken as the tilt adjustment range of the colliding rebar. The minimum value of the sum of collision depths corresponding to the tilt adjustment range is calculated, and the rotation angle corresponding to the minimum value of the sum of collision depths is taken as the tilt adjustment angle of the colliding rebar. The colliding rebar is rotated according to the tilt adjustment angle, and the colliding rebar is marked as a special rebar. Special rebars are no longer subject to collision checks and translation.

[0023] Furthermore, methods for tilting and adjusting include:

[0024] If the minimum number of collision points corresponds to multiple angle ranges, then the sum of the collision depths of each angle range corresponding to the minimum number of collision points is calculated. The minimum value of the sum of the collision depths corresponding to each angle range is calculated, and the rotation angle corresponding to the minimum value of the sum of the collision depths is taken as the tilt adjustment angle of the collision reinforcement. The collision reinforcement is rotated according to the tilt adjustment angle, and the collision reinforcement is marked as a special reinforcement. Special reinforcements are no longer subject to collision checks and translation.

[0025] In some embodiments, it also includes:

[0026] After optimizing the arrangement of the steel mesh at the bottom of the foundation, calculate the change parameters of the position of the collision steel bars after optimization compared with the initial position, and generate a steel bar optimization arrangement list with adjustment parameters.

[0027] In some embodiments, the method for constructing a three-dimensional model of the pile head reinforcement and the concrete cushion includes: after completing the construction of the pile head and the concrete cushion, using a three-dimensional laser scanner, UAV oblique photography, or total station to conduct three-dimensional information scanning of the pile head reinforcement and the pile cap concrete cushion, and deriving the three-dimensional information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion based on the three-dimensional information of the pile head reinforcement and the pile cap concrete cushion, and constructing a three-dimensional model of the pile head reinforcement and the concrete cushion.

[0028] Furthermore, the three-dimensional coordinates of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion are saved as a TXT document. The TXT document is then imported into Allplan software. A logic tree is built in the software development interface to automatically generate a three-dimensional model of the pile head reinforcement and the concrete cushion, ensuring that the origin of the pile head reinforcement coincides with that of the pile cap reinforcement.

[0029] Secondly, the present invention provides a three-dimensional reconstruction and optimized layout system for foundation reinforcement based on the Allplan platform, comprising:

[0030] Data acquisition module: used to acquire three-dimensional information of pile head reinforcement and concrete cushion layer, and extract three-dimensional information of the top and bottom points of pile head reinforcement and the four corners of concrete cushion layer;

[0031] Model building module: used to build a three-dimensional model of the pile head reinforcement and concrete cushion based on the three-dimensional information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion, and to build a three-dimensional model of the bottom reinforcement mesh of the pile cap based on the design information of the bottom reinforcement mesh of the pile cap.

[0032] Collision detection module: used to perform collision detection on pile head reinforcement and bottom reinforcement mesh of pile cap, and to determine the collision point and collision depth of the colliding reinforcement.

[0033] Optimization Layout Module: Used to optimize the steel mesh at the bottom of the foundation according to optimization layout principles. The optimization layout principles include first taking no collision as the optimization goal, then translating the colliding steel bars. If translation cannot achieve the optimization goal, then tilting and adjusting the colliding steel bars. If tilting and adjusting cannot achieve the optimization goal, the optimization goal is adjusted to: minimizing the sum of collision depths based on the fewest collision points, and then tilting and adjusting the colliding steel bars again.

[0034] Layout list output module: Used to generate an optimized layout list of rebars with moving direction based on the spacing between the optimized position and the initial position of the collision rebars.

[0035] The beneficial effects of this invention are as follows:

[0036] 1. This invention utilizes 3D laser scanning and BIM technology to reconstruct a 3D model of the bridge abutment reinforcement based on the Allplan platform. Multiple collision checks are conducted, and the reinforcement arrangement is optimized based on the maximum collision depth to eliminate colliding reinforcement. This can guide the industrialized production and installation of bridge abutment reinforcement, improve construction quality and efficiency, avoid rework and material waste, save construction costs, and promote the prefabrication rate of bridge abutment reinforcement components.

[0037] 2. This invention tilts and repositions the colliding reinforcing bars that cannot be eliminated by translation, further optimizing the arrangement of the colliding reinforcing bars, which is beneficial to eliminating the colliding reinforcing bars.

[0038] 3. During the tilting and repositioning process, this invention compares the number of collision points with the sum of their collision depths to minimize the number of collision points and, based on minimizing the number of collision points, minimize the sum of their collision depths, thereby reducing the difficulty of on-site construction and improving construction quality and efficiency.

[0039] 4. This invention generates an optimized steel reinforcement layout list using the optimized layout results, which can be used to guide the assembly line production and integral installation of bridge foundation steel reinforcement components, thereby improving the industrialization level of cast-in-place bridge foundations. Attached Figure Description

[0040] Figure 1 This is a flowchart of the present invention;

[0041] Figure 2 This is a structural layout diagram of the pile head reinforcement and the pile cap reinforcement of the present invention;

[0042] Figure 3 This is a structural layout diagram of the pile head reinforcement and the bottom reinforcement mesh of the pile cap according to the present invention;

[0043] Figure 4 This is a front view of the pile head reinforcement and the bottom reinforcement mesh of the pile cap according to the present invention;

[0044] Figure 5 This is a schematic diagram showing the area where the pile head reinforcement is located according to the present invention;

[0045] Figure 6 This is a schematic diagram showing the location of one of the pile head reinforcement bars in this invention;

[0046] Figure 7 This is a schematic diagram showing the translation of the steel reinforcement mesh at the bottom of the foundation of the present invention. Detailed Implementation

[0047] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0048] like Figure 2 As shown, the pile foundation of the pier cap is generally constructed by loosely binding the reinforcing bars and casting in place. After the pile head reinforcing bars are constructed, they are prone to deviation and have a large difference from the design drawing position. The upper part of the pile head reinforcing bars will be inserted into the pier cap. When arranging the pier cap reinforcing bars, there may be collisions and interference with the pile head reinforcing bars, which will cause changes in the arrangement of the pier cap reinforcing bars, inconsistent spacing, and difficulty in ensuring the thickness of the protective layer.

[0049] It should be noted that the horizontal and vertical reinforcing bars in the middle of the pile cap are manually loosened after the pile cap reinforcing bar components are installed as a whole. Since the number of horizontal and vertical reinforcing bars in the middle is relatively small, some can be pre-installed, and the rest can be loosely tied later, thus minimizing the impact on the pile head reinforcing bars. For example... Figure 3 , 4 As shown, since the pile head reinforcement is radial, its arrangement is relatively dense near the concrete cushion layer. The reinforcement mesh of the two layers at the bottom of the pile cap needs to pass through the pile head reinforcement. Therefore, the reinforcement mesh at the bottom of the pile cap is greatly affected by the pile head reinforcement and needs to be optimized.

[0050] like Figure 1 As shown, this invention provides a method for three-dimensional reconstruction and optimized arrangement of foundation reinforcement based on the Allplan platform, including:

[0051] Step 1: Obtain the 3D information of the pile head reinforcement and concrete cushion layer, and construct a 3D model of the pile head reinforcement and concrete cushion layer;

[0052] In some embodiments, the method for constructing a three-dimensional model of the pile head reinforcement and the concrete cushion includes: after completing the construction of the pile head and the concrete cushion, using a three-dimensional laser scanner, UAV oblique photography, or total station to conduct three-dimensional information scanning of the pile head reinforcement and the concrete cushion of the pile cap; deriving the three-dimensional information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion based on the three-dimensional information of the pile head reinforcement and the concrete cushion; saving the three-dimensional coordinates of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion as a TXT document; importing the TXT document into Allplan software; constructing a logic tree in the software development interface; automatically generating a three-dimensional model of the pile head reinforcement and the concrete cushion; and ensuring that the origins of the pile head reinforcement and the reinforcement of the pile cap coincide.

[0053] Step 2: Construct a 3D model of the steel reinforcement mesh at the bottom of the foundation;

[0054] The 3D models of pile head reinforcement, concrete cushion layer, and bottom reinforcement mesh of pile cap can all be built in Allplan software;

[0055] Step 3: Conduct a collision inspection on the pile head reinforcement and the bottom reinforcement mesh of the pile cap to obtain the collision point and collision depth of the colliding reinforcement. The colliding reinforcement includes the reinforcement in the bottom reinforcement mesh of the pile cap that collides with the pile head reinforcement.

[0056] It should be noted that the steel bars are cylinders, and the collision between steel bars is the embedding of the three-dimensional geometric model. The collision depth is the result of the software's "collision check" function.

[0057] Step 4: Count the collision points and collision depths of the colliding reinforcing bars within the range of the pile head reinforcing bars, determine the maximum collision depth of each colliding reinforcing bar, and translate each colliding reinforcing bar by the maximum collision depth.

[0058] Step 5: Perform a collision check on the pile head reinforcement and the bottom reinforcement mesh of the pile cap again. Based on the collision check results, determine the maximum collision depth of each colliding reinforcement. Then, translate each colliding reinforcement at the maximum collision depth until there are no colliding reinforcements.

[0059] Understandably, using Allplan software to perform multiple collision checks on the foundation reinforcement model and optimizing the reinforcement layout based on the check results greatly avoids rework, idle time, and waste caused by drawings during construction, thus achieving the goal of improving quality and efficiency.

[0060] It should be noted that the diameter of the foundation reinforcement is generally 28mm, the diameter of the pile head reinforcement is 28mm, and the spacing between the pile head reinforcement is designed to be 140mm, with a minimum of 70mm. Under normal circumstances, this is sufficient for the reinforcement to pass through. Therefore, after multiple rounds of translation, it can generally be ensured that there is no collision between the bottom reinforcement mesh of the foundation and the pile head reinforcement.

[0061] In some embodiments, the method for determining the range of the pile head reinforcement in step four includes:

[0062] The location of the pile head reinforcement for each pile head is determined as follows: Obtain the coordinates (x, y, z) of all the vertices of the pile head reinforcement for a given pile head. The range between the maximum and minimum values ​​of the x-coordinate is taken as the length range of the pile head reinforcement, and the range between the maximum and minimum values ​​of the y-coordinate is taken as the width range of the pile head reinforcement. The location of the pile head reinforcement for that pile head is determined based on these length and width ranges. Specifically, the x-direction is parallel to the transverse reinforcement in the bottom reinforcement mesh of the pile cap, the y-direction is parallel to the longitudinal reinforcement in the bottom reinforcement mesh of the pile cap, and the z-direction is perpendicular to the plane containing the x-direction and y-direction. For example... Figure 5 As shown, A represents the length range of the pile head reinforcement bars at the top left and bottom left corners, B represents the length range of the pile head reinforcement bars at the top right and bottom right corners, C represents the width range of the pile head reinforcement bars at the top left and top right corners, and D represents the width range of the pile head reinforcement bars at the bottom left and bottom right corners.

[0063] In some embodiments, step four, the method of translating each colliding rebar by the maximum collision depth, includes:

[0064] Determine whether the axes of the pile head reinforcement and the colliding reinforcement intersect. If they do, translate the pile head reinforcement along either of the two directions perpendicular to the colliding reinforcement in the plane containing the x and y axes. The translation distance is equal to the maximum collision depth. In other words, if... Figure 6 As shown, if the axis of the pile head reinforcement intersects with that of the colliding reinforcement and the colliding reinforcement is a transverse reinforcement, the colliding reinforcement can be translated along the y or -y direction. If the axis of the pile head reinforcement intersects with that of the colliding reinforcement and the colliding reinforcement is a longitudinal reinforcement, the colliding reinforcement can be translated along the x or -x direction.

[0065] Furthermore, if the axes of the pile head reinforcement and the colliding reinforcement do not intersect, then the pile head reinforcement is translated according to the arrangement direction of the colliding reinforcement:

[0066] If the colliding reinforcement is a transverse reinforcement, then determine the misalignment relationship between the colliding reinforcement and the pile head reinforcement. If the axis of the colliding reinforcement is located on the y-direction side of the axis of the pile head reinforcement, then the colliding reinforcement is translated along the y-direction, and the translation distance is equal to the maximum collision depth. If the axis of the colliding reinforcement is located on the -y-direction side of the axis of the pile head reinforcement, then the colliding reinforcement is translated along the -y-direction, and the translation distance is equal to the maximum collision depth.

[0067] If the colliding reinforcement is a longitudinal reinforcement, then determine the misalignment relationship between the colliding reinforcement and the pile head reinforcement. If the axis of the colliding reinforcement is located on one side of the axis of the pile head reinforcement in the x direction, then the colliding reinforcement is translated along the x direction, and the translation distance is equal to the maximum collision depth. If the axis of the colliding reinforcement is located on one side of the axis of the pile head reinforcement in the -x direction, then the colliding reinforcement is translated along the -x direction, and the translation distance is equal to the maximum collision depth.

[0068] For example, such as Figure 7 The diagram shows the adjustment of a transverse reinforcement and a longitudinal reinforcement. The dashed line represents the design position, and the solid line represents the optimized position. If the axes of the pile head reinforcement and the colliding reinforcement do not intersect, the colliding reinforcement will move in the direction with the shortest required translation distance.

[0069] In some embodiments, in step five, if a collision point still exists after a certain colliding steel bar has been translated n times, then the colliding steel bar is tilted and repositioned.

[0070] It should be noted that although in most cases multiple rounds of translation can ensure that the bottom reinforcement mesh of the pile cap and the pile head reinforcement do not collide, if the positional deviation of the pile head reinforcement of a certain pile head is large, it will cause misalignment with the pile head reinforcement of other pile heads. It is necessary to tilt and adjust the pile cap reinforcement to avoid collision. If collision always exists, the process continues until the minimum number of collision points is reached. If there are multiple collision points that are all at the minimum, the process continues until the sum of the collision depths reaches the minimum value.

[0071] The methods of tilting and adjusting include:

[0072] If a colliding rebar still has colliding points after n translations (n≥3), calculate the distances between all current colliding points and the reference point. The reference point is the colliding point with the maximum colliding depth during the last translation of the colliding rebar. Based on the current distances and colliding depths between all current colliding points and the reference point, keep the distance between the reference point and the pile head rebar constant. Using the reference point as the center of rotation, calculate the rotation angle of the colliding rebar when it separates from the pile head rebar at each colliding point. Determine the maximum rotation angle of the colliding rebar. Gradually rotate the colliding rebar to the maximum rotation angle, rotating in 5mm increments.

[0073] If, after the colliding reinforcing bar rotates to its maximum rotation angle, there is no point of collision between the colliding reinforcing bar and the pile head reinforcing bar, then the optimized arrangement of the colliding reinforcing bar is completed.

[0074] If a new collision point appears between the colliding rebar and the pile head rebar as the rebar gradually rotates to its maximum rotation angle, the number of collision points when the rebar rotates to different angle ranges is counted. The number of collision points corresponding to different angle ranges is compared, and the angle range corresponding to the minimum number of collision points is taken as the tilt adjustment range of the colliding rebar. The minimum value of the sum of collision depths corresponding to the tilt adjustment range is calculated, and the rotation angle corresponding to the minimum value of the sum of collision depths is taken as the tilt adjustment angle of the colliding rebar. The colliding rebar is rotated according to the tilt adjustment angle, and the colliding rebar is marked as a special rebar. Special rebars are no longer subject to collision checks and translation.

[0075] If the minimum number of collision points corresponds to multiple angle ranges, then the sum of the collision depths of each angle range corresponding to the minimum number of collision points is calculated. The minimum value of the sum of the collision depths corresponding to each angle range is calculated, and the rotation angle corresponding to the minimum value of the sum of the collision depths is taken as the tilt adjustment angle of the collision reinforcement. The collision reinforcement is rotated according to the tilt adjustment angle, and the collision reinforcement is marked as a special reinforcement. Special reinforcements are no longer subject to collision checks and translation.

[0076] It should be noted that during the process of the colliding reinforcing bar gradually rotating to the maximum rotation angle, new collision points may appear with the pile head reinforcing bar. The number of collision points between the colliding reinforcing bar and the pile head reinforcing bar varies with the angle range. For example, an angle range of [a, b] corresponds to one collision point, while an angle range of (b, c) corresponds to two collision points. Therefore, the angle range with fewer collision points, [a, b], is taken as the tilt adjustment range. Since the rotation is in 5mm increments, the sum of the collision depths corresponding to each increment when the colliding reinforcing bar rotates within the range of [a, b] can be calculated. The rotation angle with the smallest sum of collision depths can be taken as the tilt adjustment angle of the colliding reinforcing bar.

[0077] In addition, there are cases where there is a collision point when the angle range is [a,b] and [c,d]. In this case, it is necessary to calculate the sum of the collision depths corresponding to each step when the colliding steel bar rotates within the range of [a,b] and [c,d]. The rotation angle with the smallest sum of collision depths is taken as the tilt adjustment angle of the colliding steel bar.

[0078] In some embodiments, it also includes:

[0079] After optimizing the layout of the bottom reinforcement mesh of the pier cap, the changes in the positions of the collision reinforcement bars after optimization compared to their initial positions are calculated, generating an optimized reinforcement layout material list with adjustment parameters. This optimized layout material list can be used to guide the assembly line production and integral installation of pier cap reinforcement components, improving the industrialization level of cast-in-place pier caps in the bridge construction field.

[0080] This invention also provides a three-dimensional reconstruction and optimized layout system for foundation reinforcement based on the Allplan platform, comprising:

[0081] Data acquisition module: used to acquire three-dimensional information of pile head reinforcement and concrete cushion layer, and extract three-dimensional information of the top and bottom points of pile head reinforcement and the four corners of concrete cushion layer;

[0082] Model building module: used to build a three-dimensional model of the pile head reinforcement and concrete cushion based on the three-dimensional information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion, and to build a three-dimensional model of the bottom reinforcement mesh of the pile cap based on the design information of the bottom reinforcement mesh of the pile cap.

[0083] Collision detection module: used to perform collision detection on pile head reinforcement and bottom reinforcement mesh of pile cap, and to determine the collision point and collision depth of the colliding reinforcement.

[0084] Optimization Layout Module: Used to optimize the steel mesh at the bottom of the foundation according to optimization layout principles. The optimization layout principles include first taking no collision as the optimization goal, then translating the colliding steel bars. If translation cannot achieve the optimization goal, then tilting and adjusting the colliding steel bars. If tilting and adjusting cannot achieve the optimization goal, the optimization goal is adjusted to: minimizing the sum of collision depths based on the fewest collision points, and then tilting and adjusting the colliding steel bars again.

[0085] Layout list output module: Used to generate an optimized layout list of rebars with moving direction based on the spacing between the optimized position and the initial position of the collision rebars.

[0086] This invention utilizes 3D laser scanning technology to scan the reinforcing bars of the pier cap to obtain end coordinate data, taking into account the actual reinforcing bar conditions on site, thus improving the accuracy and efficiency of pier cap reinforcing bar modeling. It directly generates a 3D model of the pier cap reinforcing bars by importing the end coordinate data into Allplan software, eliminating the need for manual modeling and significantly improving modeling efficiency. Allplan software is used to perform collision checks on the pier cap reinforcing bar model, and the reinforcement arrangement is optimized based on the check results, greatly avoiding rework, idle time, and waste caused by drawings during construction, achieving the goal of improving quality and efficiency. The optimized arrangement results guide the assembly line production of pier cap reinforcing bar components, enabling integrated installation and improving the industrialization level of cast-in-place pier caps in the bridge construction field.

[0087] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for three-dimensional reconstruction and optimized arrangement of pile cap reinforcement based on the Allplan platform, characterized in that: include: Obtain the three-dimensional information of the pile head reinforcement and concrete cushion layer, and construct a three-dimensional model of the pile head reinforcement and concrete cushion layer. Construct a three-dimensional model of the steel reinforcement mesh at the bottom of the foundation; Collision checks are performed on the pile head reinforcement and the bottom reinforcement mesh of the pile cap to obtain the collision points and collision depths of the colliding reinforcements. The colliding reinforcements include the reinforcements in the bottom reinforcement mesh of the pile cap that collide with the pile head reinforcement. The collision points and collision depths of the colliding reinforcing bars within the range of the pile head reinforcing bars are statistically analyzed, the maximum collision depth of each colliding reinforcing bar is determined, and each colliding reinforcing bar is translated based on the maximum collision depth. The pile head reinforcement and the bottom reinforcement mesh of the pile cap are checked again for collision. Based on the collision check results, the maximum collision depth of each colliding reinforcement is determined. Each colliding reinforcement is then translated at the maximum collision depth until there are no colliding reinforcements. The methods for determining the location of the pile head reinforcement include: The range of the pile head reinforcement for each pile head is determined as follows: Obtain the coordinates (x, y, z) of all the pile head reinforcement vertices for a given pile head. The range between the maximum and minimum values ​​of the x-coordinate is taken as the length range of the pile head reinforcement, and the range between the maximum and minimum values ​​of the y-coordinate is taken as the width range of the pile head reinforcement. The range of the pile head reinforcement for that pile head is determined based on the length and width ranges. Among them, the x-direction is parallel to the transverse reinforcement in the bottom reinforcement mesh of the pile cap, the y-direction is parallel to the longitudinal reinforcement in the bottom reinforcement mesh of the pile cap, and the z-direction is perpendicular to the plane containing the x-direction and the y-direction. The method for translating each colliding rebar at the maximum collision depth includes: Determine whether the axes of the pile head reinforcement and the colliding reinforcement intersect. If so, translate along either of the two directions perpendicular to the colliding reinforcement in the plane containing the x and y directions. The translation distance is equal to the maximum collision depth. If the axes of the pile head reinforcement and the colliding reinforcement do not intersect, then the pile head reinforcement should be translated according to the arrangement direction of the colliding reinforcement: If the colliding reinforcement is a transverse reinforcement, then determine the misalignment relationship between the colliding reinforcement and the pile head reinforcement. If the axis of the colliding reinforcement is located on the y-direction side of the axis of the pile head reinforcement, then the colliding reinforcement is translated along the y-direction, and the translation distance is equal to the maximum collision depth. If the axis of the colliding reinforcement is located on the -y-direction side of the axis of the pile head reinforcement, then the colliding reinforcement is translated along the -y-direction, and the translation distance is equal to the maximum collision depth. If the colliding reinforcement is a longitudinal reinforcement, then determine the misalignment relationship between the colliding reinforcement and the pile head reinforcement. If the axis of the colliding reinforcement is located on one side of the axis of the pile head reinforcement in the x direction, then the colliding reinforcement is translated along the x direction, and the translation distance is equal to the maximum collision depth. If the axis of the colliding reinforcement is located on one side of the axis of the pile head reinforcement in the -x direction, then the colliding reinforcement is translated along the -x direction, and the translation distance is equal to the maximum collision depth.

2. The method for three-dimensional reconstruction and optimized arrangement of foundation reinforcement based on the Allplan platform according to claim 1, characterized in that: If a collision point still exists after n translations of a certain colliding steel bar, then the colliding steel bar is tilted and repositioned.

3. The method for three-dimensional reconstruction and optimized arrangement of foundation reinforcement based on the Allplan platform according to claim 2, characterized in that: The methods of tilting and adjusting include: If a colliding rebar still has a collision point after n translations, calculate the distances between all current collision points and the reference point. The reference point is the collision point with the maximum collision depth during the last translation of the colliding rebar. Based on the current distances and collision depths between all current collision points and the reference point, keep the distance between the reference point and the pile head rebar constant. Using the reference point as the center of rotation, calculate the rotation angle of the colliding rebar when it separates from the pile head rebar at each collision point, determine the maximum rotation angle of the colliding rebar, and gradually rotate the colliding rebar to the maximum rotation angle. If, after the colliding reinforcing bar rotates to its maximum rotation angle, there is no point of collision between the colliding reinforcing bar and the pile head reinforcing bar, then the optimized arrangement of the colliding reinforcing bar is complete.

4. The method for three-dimensional reconstruction and optimized arrangement of foundation reinforcement based on the Allplan platform according to claim 3, characterized in that: The methods of tilting and adjusting include: If a new collision point appears between the colliding rebar and the pile head rebar as the rebar gradually rotates to its maximum rotation angle, the number of collision points when the rebar rotates to different angle ranges is counted. The number of collision points corresponding to different angle ranges is compared, and the angle range corresponding to the minimum number of collision points is taken as the tilt adjustment range of the colliding rebar. The minimum value of the sum of collision depths corresponding to the tilt adjustment range is calculated, and the rotation angle corresponding to the minimum value of the sum of collision depths is taken as the tilt adjustment angle of the colliding rebar. The colliding rebar is rotated according to the tilt adjustment angle, and the colliding rebar is marked as a special rebar. Special rebars are no longer subject to collision checks and translation.

5. The method for three-dimensional reconstruction and optimized arrangement of foundation reinforcement based on the Allplan platform according to claim 4, characterized in that: The methods of tilting and adjusting include: If there are multiple angle ranges corresponding to the minimum number of collision points, then the sum of the collision depths of each angle range corresponding to the minimum number of collision points is calculated. The minimum value of the sum of the collision depths corresponding to each angle range is calculated, and the rotation angle corresponding to the minimum value of the sum of the collision depths is taken as the tilt adjustment angle of the collision reinforcement. The collision reinforcement is rotated according to the tilt adjustment angle, and the collision reinforcement is marked as a special reinforcement. Special reinforcements are no longer subject to collision checks and translation.

6. The method for three-dimensional reconstruction and optimized arrangement of foundation reinforcement based on the Allplan platform according to claim 1, characterized in that: include: After optimizing the arrangement of the steel mesh at the bottom of the foundation, calculate the change parameters of the position of the collision steel bars after optimization compared with the initial position, and generate a steel bar optimization arrangement list with adjustment parameters.

7. A system for implementing the three-dimensional reconstruction and optimized arrangement method of foundation reinforcement based on the Allplan platform as described in any one of claims 1 to 6, characterized in that: include: Data acquisition module: used to acquire three-dimensional information of pile head reinforcement and concrete cushion layer, and extract three-dimensional information of the top and bottom points of pile head reinforcement and the four corners of concrete cushion layer; Model building module: used to build a three-dimensional model of the pile head reinforcement and concrete cushion based on the three-dimensional information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion, and to build a three-dimensional model of the bottom reinforcement mesh of the pile cap based on the design information of the bottom reinforcement mesh of the pile cap. Collision detection module: used to perform collision detection on pile head reinforcement and bottom reinforcement mesh of pile cap, and to determine the collision point and collision depth of the colliding reinforcement. Optimization Layout Module: Used to optimize the steel mesh at the bottom of the foundation according to optimization layout principles. The optimization layout principles include first taking no collision as the optimization goal, then translating the colliding steel bars. If translation cannot achieve the optimization goal, then tilting and adjusting the colliding steel bars. If tilting and adjusting cannot achieve the optimization goal, the optimization goal is adjusted to: minimizing the sum of collision depths based on the fewest collision points, and then tilting and adjusting the colliding steel bars again. Layout list output module: Used to generate an optimized layout list of rebars with moving direction based on the spacing between the optimized position and the initial position of the collision rebars.

Images