Bearing platform steel bar three-dimensional reconstruction and optimal arrangement method and system based on Allplan platform

Abstract

The invention provides a bearing platform reinforcing steel bar three-dimensional reconstruction and optimal arrangement method and system based on an Allplan platform, and the method comprises the steps: obtaining the three-dimensional information of pile head reinforcing steel bars and a concrete cushion layer, and constructing a three-dimensional model of the pile head reinforcing steel bars and the concrete cushion layer; constructing a three-dimensional model of the bearing platform bottom reinforcing mesh; performing collision inspection on the pile head steel bar and the bearing platform bottom steel bar mesh to obtain a collision point position and a collision depth of the collision steel bar; counting collision point positions and collision depths of the collision steel bars in the range of the pile head steel bars, and translating each collision steel bar at the maximum collision depth; and collision inspection is conducted on the pile head steel bars and the bearing platform bottom steel bar net again, and translation is conducted on each collision steel bar at the maximum collision depth again till no collision steel bar exists. The method can guide industrial production and installation of the bearing platform reinforcing steel bars, improve the construction quality and work efficiency, avoid the problems of reworking, material waste and the like, save the construction cost and promote improvement of the prefabrication assembly rate of bridge bearing platform reinforcing steel bar components.

Description

Technical Field

[0001] The present invention relates to the technical field of optimized arrangement of cap steel bars, and in particular to a method and system for three-dimensional reconstruction and optimized arrangement of cap steel bars based on an Allplan platform. Background Art

[0002] The traditional cap adopts the independent design mode of pile head-cap-pier body, without considering the collision and interference between the pile head reinforcement and the pier body reinforcement; at the same time, the reinforcement is loosely tied and cast-in-place concrete is used for construction. The pile head reinforcement is prone to displacement after construction, which is quite different from the design drawing. As a result, the existing cap has problems such as disordered bottom reinforcement arrangement, uneven reinforcement spacing, difficult to ensure the thickness of the protective layer, and serious reinforcement collision. With the transformation and upgrading of the traditional construction industry and the trend of industrialized intelligent construction of bridges, it is urgent to improve the structure and design ideas of the cap reinforcement and innovate the industrialized construction technology of the cap reinforcement. Summary of the invention

[0003] The purpose of the present invention is to address the defects of the prior art and provide a method and system for three-dimensional reconstruction and optimized arrangement of pedestal steel bars based on the Allplan platform. Through three-dimensional laser scanning and BIM technology, a three-dimensional model of the pedestal steel bars is reconstructed based on the Allplan platform, collision checks are carried out to optimize the arrangement, and the industrialized production and installation of the pedestal steel bars are guided to improve construction quality and work efficiency, avoid rework and material waste, save construction costs, and promote the improvement of the prefabrication and assembly rate of bridge pedestal steel bar components.

[0004] In order to solve the above technical problems, in the first aspect, the present invention provides a method for three-dimensional reconstruction and optimized arrangement of pile cap reinforcement based on the Allplan platform, comprising:

[0005] Obtain the 3D information of the pile head reinforcement and concrete cushion, and construct a 3D model of the pile head reinforcement and concrete cushion;

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

[0007] Perform collision inspection on the pile head steel bars and the steel mesh at the bottom of the cap to obtain the collision point and collision depth of the collision steel bars, wherein the collision steel bars include the steel bars in the steel mesh at the bottom of the cap that collide with the pile head steel bars;

[0008] Counting the collision points and collision depths of the collision steel bars in the range where the pile head steel bars are located, determining the maximum collision depth of each collision steel bar, and translating each collision steel bar at the maximum collision depth;

[0009] Perform collision check on the pile head reinforcement and the reinforcement mesh at the bottom of the pedestal again, determine the maximum collision depth of each collision reinforcement based on the collision check result, and translate each collision reinforcement at the maximum collision depth again until there are no collision 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 of each pile head is determined respectively: the coordinates (x, y, z) of all the pile head reinforcement vertices of a pile head are obtained, the range between the maximum and minimum values ​​of the x coordinate is used as the length range of the pile head reinforcement, the range between the maximum and minimum values ​​of the y coordinate is used as the width range of the pile head reinforcement, and the range of the pile head reinforcement of the pile head is determined according to the length range and the width range; wherein, the x direction is parallel to the transverse reinforcement in the reinforcement mesh at the bottom of the pedestal, the y direction is parallel to the longitudinal reinforcement in the reinforcement mesh at the bottom of the pedestal, and the z direction is perpendicular to the plane where the x direction and the y direction are located.

[0012] In some embodiments, the method of translating each collision steel bar at the maximum collision depth includes:

[0013] Determine whether the axis of the pile head reinforcement and the collision reinforcement intersect. If so, translate in any of the two directions perpendicular to the collision reinforcement in the plane of the x-direction and the y-direction, and the translation distance is equal to the maximum collision depth.

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

[0015] If the collision steel bar is a transverse steel bar, the dislocation relationship between the collision steel bar and the pile head steel bar is determined. If the axis of the collision steel bar is located on the y side of the axis of the pile head steel bar, the collision steel bar is translated along the y direction, and the translation distance is equal to the maximum collision depth. If the axis of the collision steel bar is located on the -y side of the axis of the pile head steel bar, the collision steel bar is translated along the -y direction, and the translation distance is equal to the maximum collision depth.

[0016] If the collision steel bar is a longitudinal steel bar, the misalignment relationship between the collision steel bar and the pile head steel bar is determined. If the axis of the collision steel bar is on the x side of the axis of the pile head steel bar, the collision steel bar is translated along the x direction, and the translation distance is equal to the maximum collision depth. If the axis of the collision steel bar is on the -x side of the axis of the pile head steel bar, the collision steel bar is translated along the -x direction, and the translation distance is equal to the maximum collision depth.

[0017] In some embodiments, when a collision point still exists after a collision steel bar has been translated n times, the collision steel bar is tilted and adjusted.

[0018] Furthermore, the tilt adjustment method includes:

[0019] If a collision point still exists after a collision steel bar has been translated n times, the distance between all the current collision points and the reference point is calculated. According to the distance and collision depth between all the current collision points and the reference point, the collision point with the maximum collision depth during the last translation of the collision steel bar is used as the reference point. The distance between the reference point and the pile head steel bar remains unchanged. The reference point is used as the center of rotation. The rotation angle of the collision steel bar is calculated when each collision point is separated from the pile head steel bar, and the maximum rotation angle of the collision steel bar is determined. The collision steel bar is gradually rotated to the maximum rotation angle.

[0020] If there is no collision point between the collision steel bar and the pile head steel bar after the collision steel bar is rotated to the maximum rotation angle, the optimal arrangement of the collision steel bar is completed;

[0021] Furthermore, the tilt adjustment method includes:

[0022] If a new collision point appears between the collision steel bar and the pile head steel bar during the process of the collision steel bar gradually rotating to the maximum rotation angle, the number of collision points when the collision steel bar is rotated to different angle ranges is counted, and the number of collision points corresponding to different angle ranges is compared. The angle range corresponding to the smallest number of collision points is used as the inclination adjustment range of the collision steel bar, and the minimum value of the sum of the collision depths corresponding to the inclination adjustment range is calculated. The rotation angle corresponding to the minimum value of the sum of the collision depths is used as the inclination adjustment angle of the collision steel bar. The collision steel bar is rotated according to the inclination adjustment angle and marked as a special steel bar. The special steel bar is no longer subject to collision check and translation.

[0023] Furthermore, the tilt adjustment method includes:

[0024] If there are multiple angle ranges corresponding to the minimum number of collision points, the sum of the collision depths of each angle range corresponding to the minimum number of collision points when the collision steel bar is rotated is counted, and the minimum value of the sum of the collision depths corresponding to each angle range is calculated. The rotation angle corresponding to the minimum value of the sum of the collision depths is used as the inclination adjustment angle of the collision steel bar, the collision steel bar is rotated according to the inclination adjustment angle, and the collision steel bar is marked as a special steel bar. The special steel bar is no longer subject to collision check and translation.

[0025] In some embodiments, it also includes:

[0026] After completing the optimized arrangement of the steel mesh at the bottom of the pedestal, calculate the change parameters of the optimized position and initial position of the collision steel bars, and generate a steel bar optimized arrangement list with adjustment parameters.

[0027] In some embodiments, the method for constructing a three-dimensional model of the pile head steel bars and the concrete cushion layer includes: after completing the construction of the broken pile head and the concrete cushion layer, using a three-dimensional laser scanner or unmanned aerial vehicle oblique photography or a total station to carry out a three-dimensional information scan of the pile head steel bars and the pedestal concrete cushion layer, and based on the three-dimensional information of the pile head steel bars and the pedestal concrete cushion layer, deriving the three-dimensional information of the top and bottom points of the pile head steel bars and the four corners of the concrete cushion layer to construct a three-dimensional model of the pile head steel bars and the concrete cushion layer.

[0028] Furthermore, the three-dimensional coordinates of the top and bottom points of the pile head steel bars and the four corners of the concrete cushion layer are saved as a TXT document, and the TXT document is imported into the Allplan software. A logic tree is constructed in the software development interface to automatically generate a three-dimensional model of the pile head steel bars and the concrete cushion layer, thereby completing the coincidence of the origins of the pile head steel bars and the steel bars of the cap.

[0029] In a second aspect, the present invention provides a cap reinforcement three-dimensional reconstruction and optimization arrangement system based on the Allplan platform, comprising:

[0030] Data acquisition module: used to collect the 3D information of the pile head reinforcement and concrete cushion, and extract the 3D information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion;

[0031] Model building module: used to build a 3D model of the pile head reinforcement and concrete cushion according to the 3D information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion, and to build a 3D model of the reinforcement mesh at the bottom of the cap according to the design information of the reinforcement mesh at the bottom of the cap;

[0032] Collision check module: used to check the collision between the pile head reinforcement and the reinforcement mesh at the bottom of the cap, and determine the collision point and collision depth of the collision reinforcement;

[0033] Optimized arrangement module: used to optimize the steel mesh at the bottom of the pedestal according to the optimized arrangement principle. The optimized arrangement principle includes first taking no collision as the optimization goal, translating the collision steel bars, and then tilting the collision steel bars when the translation cannot achieve the optimization goal. When the tilt adjustment cannot achieve the optimization goal, the optimization goal is adjusted to: the sum of the collision depth is the smallest on the basis of the least collision points, and the collision steel bars are tilted again;

[0034] Material layout list output module: used to generate an optimized steel bar layout list with moving direction according to the distance between the optimized position of the collision steel bar and the initial position.

[0035] The beneficial effects of the present invention are:

[0036] 1. The present invention uses 3D laser scanning and BIM technology to reconstruct the 3D model of the cap steel bar based on the Allplan platform, conduct multiple collision checks, optimize the arrangement of the cap steel bar according to the maximum collision depth, and eliminate the collision steel bar. It can guide the industrialized production and installation of the cap steel bar, improve the construction quality and work efficiency, avoid rework, material waste and other problems, save construction costs, and promote the prefabrication and assembly rate of bridge cap steel bar components.

[0037] 2. The present invention tilts and adjusts the collision points of the steel bars where translation cannot eliminate the collision points, and further optimizes the arrangement of the collision steel bars, which is conducive to eliminating the collision steel bars.

[0038] 3. In the process of tilt adjustment, the present invention reduces the number of collision points as much as possible by comparing the number of collision points and the sum of collision depths, and minimizes the sum of collision depths on the basis of minimizing the number of collision points, thereby reducing the difficulty of on-site construction as much as possible and improving construction quality and work efficiency.

[0039] 4. The present invention utilizes the optimized arrangement results to generate a steel bar optimized arrangement list, which can be used to guide the assembly line production of the pedestal steel bar components and the integral installation, thereby improving the degree of industrialization of cast-in-place pedestals in the bridge field. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of the present invention;

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

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

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

[0044] Figure 5 This is a schematic diagram of the range where the pile head reinforcement bars of the present invention are located;

[0045] Figure 6 A schematic diagram of the area where one of the pile head reinforcement bars is located in the present invention;

[0046] Figure 7 It is a schematic diagram of the translation of the steel mesh at the bottom of the pedestal of the present invention. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] like Figure 2 As shown, the pile foundation of the pedestal is generally constructed with loosely tied steel bars and cast-in-place concrete. The pile head steel bars are prone to displacement after construction, which is quite different from the design drawing. The upper part of the pile head steel bars will be inserted into the pedestal. When the pedestal steel bars are arranged, there may be collision and interference with the pile head steel bars, which will cause changes in the arrangement of the pedestal steel bars, different spacings, and it is difficult to guarantee the thickness of the protective layer.

[0049] It should be noted that the horizontal and vertical steel bars in the middle of the cap are manually tied after the cap steel bar components are installed in place. The number of horizontal and vertical steel bars in the middle is small, so some can be pre-installed and the other part can be installed and tied later, which is less affected by the pile head steel bars. Figure 3 , 4 As shown in the figure, since the pile head reinforcement is radial, its arrangement is denser near the concrete cushion layer, and the two layers of steel mesh at the bottom of the pedestal need to pass through the pile head reinforcement. Therefore, the steel mesh at the bottom of the pedestal is greatly affected by the pile head reinforcement and needs to be optimized.

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

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

[0052] In some embodiments, the method for constructing a three-dimensional model of a pile head steel bar and a concrete cushion layer includes: after completing the construction of the broken pile head and the concrete cushion layer, using a three-dimensional laser scanner or unmanned aerial vehicle oblique photography or a total station to carry out a three-dimensional information scan of the pile head steel bar and the pedestal concrete cushion layer, and exporting the three-dimensional information of the pile head steel bar vertices and bottom points and the four corners of the concrete cushion layer according to the three-dimensional information of the pile head steel bar and the pedestal concrete cushion layer, saving the three-dimensional coordinates of the pile head steel bar vertices and bottom points and the four corners of the concrete cushion layer as a TXT document, importing the TXT document into the Allplan software, constructing a logic tree in the software development interface, automatically generating a three-dimensional model of the pile head steel bar and the concrete cushion layer, and completing the origin coincidence of the pile head steel bar and the steel bar of the pedestal.

[0053] Step 2: construct a three-dimensional model of the steel mesh at the bottom of the cap;

[0054] The three-dimensional models of the pile head reinforcement, concrete cushion, and reinforcement mesh at the bottom of the cap can all be constructed in the Allplan software;

[0055] Step 3: Check the collision between the pile head reinforcement and the reinforcement mesh at the bottom of the cap to obtain the collision point and collision depth of the collision reinforcement, wherein the collision reinforcement includes the reinforcement in the reinforcement mesh at the bottom of the cap that collides with the pile head reinforcement;

[0056] It should be noted that the steel bar is a cylinder, and the collision between steel bars is the embedding of the three-dimensional geometric model. The collision depth is the result of automatic calculation by the "collision check" function of the software;

[0057] Step 4: Count the collision points and collision depths of the collision steel bars in the range where the pile head steel bars are located, determine the maximum collision depth of each collision steel bar, and translate each collision steel bar at the maximum collision depth;

[0058] Step 5: Perform collision check on the pile head reinforcement and the reinforcement mesh at the bottom of the pedestal again. According to the collision check result, determine the maximum collision depth of each collision reinforcement, and translate each collision reinforcement again at the maximum collision depth until there are no collision reinforcements.

[0059] It is understandable that using Allplan software to conduct multiple collision checks on the foundation reinforcement model and to optimize the reinforcement layout multiple times based on the inspection results can greatly avoid rework, idle work, waste and other phenomena caused by drawings during the construction process, and can achieve the goal of improving quality and efficiency.

[0060] It should be noted that the diameter of the general foundation steel bar is 28mm, the diameter of the pile head steel bar is 28mm, the gap between the pile head steel bars is designed to be 140mm, and the minimum is 70mm. Under normal circumstances, it is fully capable of satisfying the passage of steel bars. Therefore, after multiple rounds of translation, it can generally be ensured that there is no collision between the steel mesh at the bottom of the foundation and the steel bars at the pile head.

[0061] In some embodiments, in step 4, the method for determining the range of the pile head reinforcement includes:

[0062] Determine the range of the pile head reinforcement of each pile head separately: obtain the vertex coordinates (x, y, z) of all the pile head reinforcement of a certain pile head, take the range between the maximum and minimum values ​​of the x coordinate as the length range of the pile head reinforcement, take the range between the maximum and minimum values ​​of the y coordinate as the width range of the pile head reinforcement, and determine the range of the pile head reinforcement of the pile head according to the length range and width range; among which, the x direction is parallel to the transverse reinforcement in the reinforcement mesh at the bottom of the pedestal, the y direction is parallel to the longitudinal reinforcement in the reinforcement mesh at the bottom of the pedestal, and the z direction is perpendicular to the plane where the x direction and the y direction are located. Figure 5 As shown, A is the length range of the pile head steel bars of the two pile heads in the upper left corner and the lower left corner, B is the length range of the pile head steel bars of the two pile heads in the upper right corner and the lower right corner, C is the width range of the pile head steel bars of the two pile heads in the upper left corner and the upper right corner, and D is the width range of the pile head steel bars of the two pile heads in the lower left corner and the lower right corner.

[0063] In some embodiments, in step 4, the method of translating each collision steel bar at the maximum collision depth includes:

[0064] Determine whether the axis of the pile head reinforcement and the collision reinforcement intersect. If so, translate in any direction perpendicular to the collision reinforcement in the x-direction and y-direction planes, and the translation distance is equal to the maximum collision depth. Figure 6 As shown, if the pile head reinforcement intersects with the axis of the collision reinforcement, and the collision reinforcement is a transverse reinforcement, the collision reinforcement can be translated along the y or -y direction; if the pile head reinforcement intersects with the axis of the collision reinforcement, and the collision reinforcement is a longitudinal reinforcement, the collision reinforcement can be translated along the x or -x direction.

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

[0066] If the collision steel bar is a transverse steel bar, the dislocation relationship between the collision steel bar and the pile head steel bar is determined. If the axis of the collision steel bar is located on the y side of the axis of the pile head steel bar, the collision steel bar is translated along the y direction, and the translation distance is equal to the maximum collision depth. If the axis of the collision steel bar is located on the -y side of the axis of the pile head steel bar, the collision steel bar is translated along the -y direction, and the translation distance is equal to the maximum collision depth.

[0067] If the collision steel bar is a longitudinal steel bar, the misalignment relationship between the collision steel bar and the pile head steel bar is determined. If the axis of the collision steel bar is on the x side of the axis of the pile head steel bar, the collision steel bar is translated along the x direction, and the translation distance is equal to the maximum collision depth. If the axis of the collision steel bar is on the -x side of the axis of the pile head steel bar, the collision steel bar is translated along the -x direction, and the translation distance is equal to the maximum collision depth.

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

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

[0070] It should be noted that, although in most cases, multiple rounds of translation can ensure that there is no collision between the steel mesh at the bottom of the cap and the steel bars at the pile head, when the position deviation of the steel bars at the pile head of a certain pile head is large, there will be a misalignment with the steel bars at the pile head of other pile heads, and the steel bars at the cap need to be tilted and adjusted to avoid collision. If there is always a collision, the minimum collision point is reached; if there are multiple collision points, the sum of the collision depths reaches the minimum value.

[0071] The methods of tilt adjustment include:

[0072] If a collision point still exists after a collision steel bar has been translated n times (n≥3), the distance between all current collision points and the reference point is calculated. The reference point is the collision point with the maximum collision depth when the collision steel bar was last translated. According to the distance between all current collision points and the reference point and the collision depth, the distance between the reference point and the pile head steel bar is kept unchanged. The reference point is used as the rotation center. The rotation angle of the collision steel bar is calculated when each collision point is separated from the pile head steel bar. The maximum rotation angle of the collision steel bar is determined, and the collision steel bar is gradually rotated to the maximum rotation angle. The rotation is performed in steps of 5 mm during the rotation to the maximum rotation angle.

[0073] If there is no collision point between the collision steel bar and the pile head steel bar after the collision steel bar is rotated to the maximum rotation angle, the optimal arrangement of the collision steel bar is completed;

[0074] If a new collision point appears between the collision steel bar and the pile head steel bar during the process of the collision steel bar gradually rotating to the maximum rotation angle, the number of collision points when the collision steel bar is rotated to different angle ranges is counted, and the number of collision points corresponding to different angle ranges is compared. The angle range corresponding to the smallest number of collision points is used as the inclination adjustment range of the collision steel bar, and the minimum value of the sum of the collision depths corresponding to the inclination adjustment range is calculated. The rotation angle corresponding to the minimum value of the sum of the collision depths is used as the inclination adjustment angle of the collision steel bar. The collision steel bar is rotated according to the inclination adjustment angle and marked as a special steel bar. The special steel bar is no longer subject to collision check and translation.

[0075] If there are multiple angle ranges corresponding to the minimum number of collision points, the sum of the collision depths of each angle range corresponding to the minimum number of collision points when the collision steel bar is rotated is counted, and the minimum value of the sum of the collision depths corresponding to each angle range is calculated. The rotation angle corresponding to the minimum value of the sum of the collision depths is used as the inclination adjustment angle of the collision steel bar, the collision steel bar is rotated according to the inclination adjustment angle, and the collision steel bar is marked as a special steel bar. The special steel bar is no longer subject to collision check and translation.

[0076] It should be noted that, when the collision steel bar gradually rotates to the maximum rotation angle, new collision points may appear with the pile head steel bar, and the number of collision points between the collision steel bar and the pile head steel bar changes with the angle range. For example, when the angle range is [a, b], it corresponds to one collision point, and when the angle range is (b, c], it corresponds to two collision points. Then, the angle range with fewer collision points is [a, b] as the tilt adjustment range. Since the rotation is in steps of 5 mm, the sum of the collision depths corresponding to each step when the collision steel bar rotates within the range of [a, b] can be calculated. The rotation angle with the smallest sum of the collision depths can be used as the tilt adjustment angle of the collision steel bar.

[0077] In addition, there is a situation where the angle range is [a, b] and [c, d] and corresponds to one collision point. In this case, it is necessary to calculate the sum of the collision depths corresponding to each step when the collision steel bar rotates within the range of [a, b] and [c, d], and take the rotation angle with the smallest sum of the collision depths as the inclination adjustment angle of the collision steel bar.

[0078] In some embodiments, it also includes:

[0079] After completing the optimized arrangement of the steel mesh at the bottom of the cap, calculate the change parameters of the optimized position of the collision steel bar and the initial position, and generate the optimized steel bar arrangement list with adjustment parameters. The optimized arrangement results are used to generate the optimized steel bar arrangement list, which can be used to guide the production of the cap steel bar parts assembly line and the integral installation, thus improving the industrialization level of cast-in-place caps in the bridge field.

[0080] The present invention also provides a cap reinforcement three-dimensional reconstruction and optimization arrangement system based on the Allplan platform, comprising:

[0081] Data acquisition module: used to collect the 3D information of the pile head reinforcement and concrete cushion, and extract the 3D information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion;

[0082] Model building module: used to build a 3D model of the pile head reinforcement and concrete cushion according to the 3D information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion, and to build a 3D model of the reinforcement mesh at the bottom of the cap according to the design information of the reinforcement mesh at the bottom of the cap;

[0083] Collision check module: used to check the collision between the pile head reinforcement and the reinforcement mesh at the bottom of the cap, and determine the collision point and collision depth of the collision reinforcement;

[0084] Optimized arrangement module: used to optimize the steel mesh at the bottom of the pedestal according to the optimized arrangement principle. The optimized arrangement principle includes first taking no collision as the optimization goal, translating the collision steel bars, and then tilting the collision steel bars when the translation cannot achieve the optimization goal. When the tilt adjustment cannot achieve the optimization goal, the optimization goal is adjusted to: the sum of the collision depth is the smallest on the basis of the least collision points, and the collision steel bars are tilted again;

[0085] Material layout list output module: used to generate an optimized steel bar layout list with moving direction according to the distance between the optimized position of the collision steel bar and the initial position.

[0086] The present invention uses three-dimensional laser scanning technology to scan the cap steel bars to obtain the end coordinate data, taking into account the actual steel bar situation on site, and improving the accuracy and efficiency of the cap steel bar modeling; using Allplan software to import the steel bar end coordinate data to directly generate the cap steel bar three-dimensional model, without manual modeling, significantly improving the modeling efficiency; using Allplan software to perform collision checks on the cap steel bar model, and optimizing the steel bar layout according to the inspection results, it greatly avoids the rework, idle work, waste and other phenomena caused by drawings during the construction process, and achieves the purpose of improving quality and efficiency. The optimized layout results are used to guide the production of the cap steel bar parts assembly line and the integral installation, which improves the industrialization level of the cast-in-place cap in the bridge field.

[0087] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for three-dimensional reconstruction and optimal arrangement of pile cap reinforcement based on the Allplan platform, characterized by: include: Obtain the 3D information of the pile head reinforcement and concrete cushion, and construct a 3D model of the pile head reinforcement and concrete cushion; Construct a three-dimensional model of the steel mesh at the bottom of the cap; Perform collision inspection on the pile head steel bars and the steel mesh at the bottom of the cap to obtain the collision point and collision depth of the collision steel bars, wherein the collision steel bars include the steel bars in the steel mesh at the bottom of the cap that collide with the pile head steel bars; Counting the collision points and collision depths of the collision steel bars in the range where the pile head steel bars are located, determining the maximum collision depth of each collision steel bar, and translating each collision steel bar at the maximum collision depth; Perform collision check on the pile head reinforcement and the reinforcement mesh at the bottom of the pedestal again, determine the maximum collision depth of each collision reinforcement based on the collision check result, and translate each collision reinforcement at the maximum collision depth again until there are no collision reinforcements.

2. The method for three-dimensional reconstruction and optimal arrangement of reinforcement bars for a pile cap based on the Allplan platform according to claim 1, characterized in that: Methods for determining the range of pile head reinforcement include: The range of the pile head reinforcement of each pile head is determined respectively: the coordinates (x, y, z) of all the pile head reinforcement vertices of a pile head are obtained, the range between the maximum and minimum values ​​of the x coordinate is used as the length range of the pile head reinforcement, the range between the maximum and minimum values ​​of the y coordinate is used as the width range of the pile head reinforcement, and the range of the pile head reinforcement of the pile head is determined according to the length range and the width range; wherein, the x direction is parallel to the transverse reinforcement in the reinforcement mesh at the bottom of the pedestal, the y direction is parallel to the longitudinal reinforcement in the reinforcement mesh at the bottom of the pedestal, and the z direction is perpendicular to the plane where the x direction and the y direction are located.

3. The method for three-dimensional reconstruction and optimal arrangement of reinforcement bars for a pile cap based on the Allplan platform according to claim 2, characterized in that: The method of translating each collision steel bar at the maximum collision depth includes: Determine whether the axis of the pile head reinforcement and the collision reinforcement intersect. If so, translate in any of the two directions perpendicular to the collision reinforcement in the plane of the x-direction and the y-direction, and the translation distance is equal to the maximum collision depth.

4. The method for three-dimensional reconstruction and optimal arrangement of reinforcement bars for a cap based on the Allplan platform according to claim 3 is characterized in that: If the pile head reinforcement and the axis of the collision reinforcement do not intersect, then the collision reinforcement is shifted according to the arrangement direction of the collision reinforcement: If the collision steel bar is a transverse steel bar, the dislocation relationship between the collision steel bar and the pile head steel bar is determined. If the axis of the collision steel bar is located on the y side of the axis of the pile head steel bar, the collision steel bar is translated along the y direction, and the translation distance is equal to the maximum collision depth. If the axis of the collision steel bar is located on the -y side of the axis of the pile head steel bar, the collision steel bar is translated along the -y direction, and the translation distance is equal to the maximum collision depth. If the collision steel bar is a longitudinal steel bar, the misalignment relationship between the collision steel bar and the pile head steel bar is determined. If the axis of the collision steel bar is on the x side of the axis of the pile head steel bar, the collision steel bar is translated along the x direction, and the translation distance is equal to the maximum collision depth. If the axis of the collision steel bar is on the -x side of the axis of the pile head steel bar, the collision steel bar is translated along the -x direction, and the translation distance is equal to the maximum collision depth.

5. The method for three-dimensional reconstruction and optimal arrangement of cap reinforcement based on the Allplan platform according to any one of claims 1 to 4, characterized in that: When a collision point still exists after a collision steel bar has been translated n times, the collision steel bar is tilted and adjusted.

6. The method for three-dimensional reconstruction and optimal arrangement of reinforcement bars for caps based on the Allplan platform according to claim 5 is characterized in that: The methods of tilt adjustment include: If a collision point still exists after a collision steel bar has been translated n times, the distance between all current collision points and the reference point is calculated. The reference point is the collision point with the maximum collision depth when the collision steel bar was last translated. According to the distance between all current collision points and the reference point and the collision depth, the distance between the reference point and the pile head steel bar is kept unchanged. The reference point is used as the center of rotation. The rotation angle of the collision steel bar is calculated when each collision point is separated from the pile head steel bar, and the maximum rotation angle of the collision steel bar is determined. The collision steel bar is gradually rotated to the maximum rotation angle. If there is no collision point between the collision steel bar and the pile head steel bar after the collision steel bar is rotated to the maximum rotation angle, the optimized arrangement of the collision steel bar is completed.

7. The method for three-dimensional reconstruction and optimal arrangement of reinforcement bars for a pile cap based on the Allplan platform according to claim 6 is characterized in that: The methods of tilt adjustment include: If a new collision point appears between the collision steel bar and the pile head steel bar during the process of the collision steel bar gradually rotating to the maximum rotation angle, the number of collision points when the collision steel bar is rotated to different angle ranges is counted, and the number of collision points corresponding to different angle ranges is compared. The angle range corresponding to the smallest number of collision points is used as the inclination adjustment range of the collision steel bar, and the minimum value of the sum of the collision depths corresponding to the inclination adjustment range is calculated. The rotation angle corresponding to the minimum value of the sum of the collision depths is used as the inclination adjustment angle of the collision steel bar. The collision steel bar is rotated according to the inclination adjustment angle and marked as a special steel bar. The special steel bar is no longer subject to collision check and translation.

8. The method for three-dimensional reconstruction and optimal arrangement of reinforcement bars for a cap based on the Allplan platform according to claim 7 is characterized in that: The methods of tilt adjustment include: If there are multiple angle ranges corresponding to the minimum number of collision points, the sum of the collision depths of each angle range corresponding to the minimum number of collision points when the collision steel bar is rotated is counted, and the minimum value of the sum of the collision depths corresponding to each angle range is calculated. The rotation angle corresponding to the minimum value of the sum of the collision depths is used as the inclination adjustment angle of the collision steel bar, the collision steel bar is rotated according to the inclination adjustment angle, and the collision steel bar is marked as a special steel bar, and collision check and translation are no longer performed on the special steel bar.

9. The method for three-dimensional reconstruction and optimal arrangement of reinforcement bars for caps based on the Allplan platform according to any one of claims 1 to 4, characterized in that: include: After completing the optimized arrangement of the steel mesh at the bottom of the pedestal, calculate the change parameters of the optimized position and initial position of the collision steel bars, and generate a steel bar optimized arrangement list with adjustment parameters.

10. A three-dimensional reconstruction and optimized arrangement system for pile cap reinforcement based on the Allplan platform, characterized by: include: Data acquisition module: used to collect the 3D information of the pile head reinforcement and concrete cushion, and extract the 3D information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion; Model building module: used to build a 3D model of the pile head reinforcement and concrete cushion according to the 3D information of the top and bottom points of the pile head reinforcement and the four corners of the concrete cushion, and to build a 3D model of the reinforcement mesh at the bottom of the cap according to the design information of the reinforcement mesh at the bottom of the cap; Collision check module: used to check the collision between the pile head reinforcement and the reinforcement mesh at the bottom of the cap, and determine the collision point and collision depth of the collision reinforcement; Optimized arrangement module: used to optimize the steel mesh at the bottom of the pedestal according to the optimized arrangement principle. The optimized arrangement principle includes first taking no collision as the optimization goal, translating the collision steel bars, and then tilting the collision steel bars when the translation cannot achieve the optimization goal. When the tilt adjustment cannot achieve the optimization goal, the optimization goal is adjusted to: the sum of the collision depth is the smallest on the basis of the least collision points, and the collision steel bars are tilted again; Material layout list output module: used to generate an optimized steel bar layout list with moving direction according to the distance between the optimized position of the collision steel bar and the initial position.

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