阅读说明：本技术 一种基于北斗/gnss&bim的施工控制网、轴网布设方法及装置 (Construction control net and shaft net arranging method and device based on Beidou/GNSS and BIM ) 是由 耿裕华 徐卓 朱岭 王斯海 宋玮恒 周昕 陈凯 张卫国 张华君 于 2021-07-22 设计创作，主要内容包括：本发明公开了一种基于北斗/GNSS&BIM的施工控制网、轴网布设方法及装置,主要步骤包括：(1)在绝对坐标化的施工BIM模型中,绘制轴网,并根据结构形式在BIM模型上初步确定控制网；(2)现场利用GNSS-RTK技术根据控制网初步寻找控制点位置,再利用施工过程北斗/GNSS高精度快速定位技术计算精确坐标,并在BIM模型中对原有控制网进行修正；(3)计算控制网与轴网交点的绝对坐标,并对同一轴线的交点进行编号；(4)在控制网中选择部分控制点作为起点,计算上述控制点到相邻控制边上控制网与轴网交点的距离,根据所计算的距离现场确定确定各控制边上轴网与控制网交点位置,进行轴网布设。本发明具有劳动强度低,布网快,精度高的优点。(The invention discloses a construction control net and shaft net arranging method and device based on Beidou/GNSS and BIM, which mainly comprise the following steps: (1) drawing an axis network in the absolute-coordinated construction BIM model, and preliminarily determining a control network on the BIM model according to the structural form; (2) initially searching a control point position according to a control network by utilizing a GNSS-RTK technology on site, calculating an accurate coordinate by utilizing a construction process Beidou/GNSS high-precision rapid positioning technology, and correcting the original control network in a BIM (building information modeling); (3) calculating absolute coordinates of intersection points of the control net and the shaft net, and numbering the intersection points of the same axis; (4) selecting part of control points in the control network as starting points, calculating the distance from the control points to the intersection point of the control network and the shaft network on the adjacent control sides, determining the intersection point position of the shaft network and the control network on each control side according to the calculated distance on site, and arranging the shaft network. The invention has the advantages of low labor intensity, fast net distribution and high precision.)

1. The construction control net and shaft net arranging method based on the Beidou/GNSS and BIM is characterized by comprising the following specific steps of:

(1) in the absolute coordinate construction BIM model, drawing an axis network according to the design reference point coordinates, and preliminarily determining a construction control network and coordinates on the BIM model according to the structural plane form;

(2) determining the on-site approximate position of a control point by utilizing Beidou/GNSS RTK real-time cm-level positioning; determining an accurate coordinate by using a construction process Beidou/GNSS high-accuracy rapid positioning technology, and correcting an original control network on a BIM (building information modeling);

(3) calculating absolute coordinates of intersection points of the control net and the axis net through BIM secondary development, and numbering the intersection points of the same axis;

(4) selecting part of control points in the control network as starting points, and calculating the distance from the control points to the intersection point of the control network and the axis network on the adjacent control edge;

(5) replacing a satellite receiver with a laser range finder at the site control point position to serve as a measurement starting point, and determining the intersection point position of the upper shaft network and the control network on each control edge according to the distance calculated in the step (4);

(6) and connecting corresponding shaft network intersection points according to the intersection point numbers provided by the BIM model.

2. The construction control net and shaft net arranging method based on Beidou/GNSS & BIM as claimed in claim 1,

and (1) designing a control net form on the BIM according to the structural form, and ensuring that the control net and the axle net are basically orthogonal.

3. The construction control net and shaft net arranging method based on Beidou/GNSS & BIM as claimed in claim 1,

in the step (2), the construction process Beidou/GNSS high-precision rapid positioning technology is one of satellite positioning ultrafast static algorithms, and the precision reaches mm level.

4. The construction control net and shaft net arranging method based on Beidou/GNSS & BIM as claimed in claim 1,

and (4) when a part of control points are selected as starting points, the control points and the adjacent edges cover the whole control network.

5. The construction control net and shaft net arranging method based on Beidou/GNSS & BIM as claimed in claim 1,

and (5) replacing the satellite receiver by using the position selected in the step (4) of the laser range finder or the total station on site, enabling a surveying staff to hand the moving target, moving along the control edge, determining the intersection point position on each edge of the site according to the distance between the starting point and each control edge shaft network intersection point, and arranging pile positions and numbers.

6. The construction control network and shaft network layout device based on Beidou/GNSS & BIM as claimed in claim 1,

the device comprises a satellite signal receiver, a leveling support, a tripod, a laser range finder/total station, a moving target and a mobile terminal, wherein satellite high-precision positioning calculation, BIM model calculation and result visualization are executed by the mobile terminal in the observation process.

7. The construction control network and shaft network layout device based on Beidou/GNSS & BIM as claimed in claim 1,

the moving target is composed of a marking line, a leveling bubble, a vertical rod and a prism, wherein the marking line is used for aligning the laser range finder/total station, and the leveling bubble is controlled to enable the whole moving target to be in a vertical state.

Technical Field

The invention relates to the technical field of civil engineering measurement control, in particular to a construction control net and shaft net arranging method and device based on Beidou/GNSS & BIM.

Background

The traditional construction is laid structural layer axle net, especially first floor axle net, generally utilizes the total powerstation to adopt the wire net to arrange the control network then encrypts and form the axle net, and the step is many and loaded down with trivial details, and intensity of labour is big, and it is more than half a day to spend time, still arouses great error easily. How to effectively improve cloth net precision and efficiency is the problem that this patent was waited to solve.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to solve the defects in the prior art and provides a construction control net and shaft net arranging method and device based on Beidou/GNSS and BIM.

The technical scheme is as follows: a construction control net and shaft net arranging method based on Beidou/GNSS and BIM comprises the following specific steps:

(1) in the absolute coordinate construction BIM model, drawing an axis network according to the design reference point coordinates, and preliminarily determining a construction control network and coordinates on the BIM model according to the structural plane form;

(2) determining the on-site approximate position of a control point by utilizing Beidou/GNSS RTK real-time cm-level positioning;

(3) calculating absolute coordinates of intersection points of the control net and the axis net through BIM secondary development, and numbering the intersection points of the same axis;

(4) selecting part of control points in the control network as starting points, and calculating the distance from the control points to the intersection point of the control network and the axis network on the adjacent control edge;

(5) replacing a satellite receiver with a laser range finder at the site control point position to serve as a measurement starting point, and determining the intersection point position of the upper shaft network and the control network on each control edge according to the distance calculated in the step (4);

(6) and connecting corresponding shaft net intersection points according to the intersection point numbers provided by the BIM model to complete on-site shaft net arrangement.

The invention is further improved in that step (1) designs the control net shape on the BIM model according to the structural form, and ensures that the control net and the axle net are basically orthogonal.

The invention further improves the method that, the step (2); and then, determining an accurate coordinate by utilizing a construction process Beidou/GNSS high-precision rapid positioning technology, and correcting the original control network on the BIM model, wherein the construction process Beidou/GNSS high-precision rapid positioning technology is one of satellite positioning ultrafast static algorithms, and the absolute positioning precision reaches the mm level.

The invention has the further improvement that in the step (4), when part of the control points are selected as starting points, the control points and the adjacent edges cover the whole axle network as soon as possible, and the probability of repeated calculation of a computer is reduced.

The invention is further improved in that in step (5), the position selected in step (4) is utilized by a laser range finder or a total station on site to replace the satellite receiver, a surveying staff holds the mobile reflective target and moves along the control edge, the intersection point position on each edge of the site is determined according to the distance between the starting point and each control edge shaft network intersection point, and the pile position and the serial number are arranged.

A construction control network and shaft network layout device based on Beidou/GNSS and BIM comprises a satellite signal receiver, a leveling support, a tripod, a laser range finder/total station, a moving target and a mobile terminal, wherein the satellite high-precision positioning calculation, the BIM model calculation and the visualization are all executed by the mobile terminal in the observation process.

The invention is further improved in that the moving target consists of a marking line, a leveling bubble, a vertical rod and a prism, wherein the marking line is used for aligning the laser distance measuring instrument/total station instrument, and the leveling bubble is controlled to enable the whole moving target to be in a vertical state.

Compared with the prior art, the construction control net and shaft net arranging method and device based on the Beidou/GNSS and BIM at least achieve the following beneficial effects:

the method can be used not only in the initial construction stage, but also in the construction process, and the axle network of each layer can be determined. Observation, high-precision positioning calculation, and calculation of the intersection point and the relative distance of the axis network are all completed by a satellite signal receiver and a computer. The accumulated time of all the processes of laying the control net and the shaft net on site is not more than 2h, which is far lower than that of the existing construction control net and shaft net laying method, and the method has the advantages of low labor intensity, high precision and basic realization of semi-automation. Because the distance between the moving target point and the control point is measured on the selected control edge by adopting the laser range finder or the total station, the relative distance between the axes is not influenced by accumulated errors and angle measurement errors, the precision is extremely high, the distance between the axis networks can reach the precision error of 1mm of laser ranging equipment theoretically, and the laser range finder is particularly suitable for assembly type buildings.

Of course, it is not specifically necessary for any one product that implements the invention to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a flow chart of the method of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

A construction control net and shaft net arranging method based on Beidou/GNSS and BIM comprises the following specific steps:

(1) in the absolute coordinate construction BIM model, drawing an axis network according to the design reference point coordinates, and preliminarily determining a construction control network and coordinates on the BIM model according to the structural plane form;

(2) determining the on-site approximate position of a control point by utilizing Beidou/GNSS RTK real-time cm-level positioning; determining an accurate coordinate by using a construction process Beidou/GNSS high-accuracy rapid positioning technology, and correcting an original control network on a BIM (building information modeling);

(3) calculating absolute coordinates of intersection points of the control net and the axis net by BIM secondary development (x _n,y _n) And the intersection points of the same axis are numbered (1, 2,3, … …, n);

(4) selecting part of control points in the control network as starting points, and calculating the distance from the control points to the intersection point of the control network and the axis network on the adjacent control edge;

assuming that the axis network has N intersections with a certain control edge, the distance from the control point to the intersections isd _n(N =1,2,3, … …, N), we have the following calculation:

(5) replacing a satellite receiver with a laser range finder at the site control point position to serve as a measurement starting point, and determining the intersection point position of the upper shaft network and the control network on each control edge according to the distance calculated in the step (4);

(6) and connecting corresponding shaft net intersection points according to the intersection point numbers provided by the BIM model to complete on-site shaft net arrangement.

Based on the above example, the technology can be used in the initial construction stage, the axis network of each layer can be determined in the construction process, observation, high-precision positioning calculation and axis network intersection point and relative distance calculation are all completed by the satellite receiver and the computer, the time for accumulating and laying the axis network is not more than 2h in all the steps, the method is far lower than that of the existing construction control network and axis network arrangement method, the labor intensity is low, and semi-automation is basically realized.

To further explain the present embodiment, it should be noted that, in step (1), the control net shape is designed on the BIM model according to the structural form, so as to ensure that the control net and the axle net are substantially orthogonal.

The invention has the further improvement that in the step (2), the construction process Beidou/GNSS high-precision rapid positioning technology is one of satellite positioning ultrafast static algorithms, and the precision reaches mm level. But the influence of various interferences in a construction area on the traditional ultrafast-stillness technology is considered, optimization is carried out, and the interference suppression capability is strong.

The further improvement of the invention is that in the step (4), when part of the control points are selected as the starting points, the control points and the adjacent edges need to cover the whole axle network at one time, and the probability of repeated calculation of a computer is reduced.

To further explain the embodiment, it should be noted that, in step (5), the laser range finder or the total station is used in the field to replace the satellite receiver at the position selected in step (4), the surveying staff moves the reflector along the control edge by holding it in hand, the position of the intersection point on each side of the field is determined according to the distance between the starting point and each control edge axis network intersection point, and the pile position and the number are arranged. Specifically, because the distance between the moving target point and the control point is measured on the selected control point by adopting the laser range finder or the total station, the relative distance between the axes is not influenced by accumulated errors and angle measurement errors, the precision is extremely high, and the theoretical distance between the networks can reach the precision error of 1mm of the laser range finding equipment, especially for the assembly type building.

A construction control network and shaft network layout device based on Beidou/GNSS and BIM comprises a satellite signal receiver, a leveling support, a tripod, a laser range finder/total station, a mobile reflective target and a mobile terminal, wherein the satellite high-precision positioning calculation, the BIM model calculation and the visualization are all executed by the mobile terminal in the observation process.

The invention is further improved in that the moving target consists of a marking line, a leveling bubble, a vertical rod and a prism, wherein the marking line is used for aligning the laser distance measuring instrument/total station instrument, and the leveling bubble is controlled to enable the whole moving target to be in a vertical state.

According to the embodiment, the construction control network and the shaft network arrangement method and device based on the Beidou/GNSS and BIM at least achieve the following beneficial effects:

the method can be used not only in the initial construction stage, but also in the construction process, and the axle network of each layer can be determined. Observation, high-precision positioning calculation, and calculation of the intersection point and the relative distance of the axis network are all completed by a satellite receiver and a computer. The accumulation of all steps of laying the control net and the shaft net on site is not more than 2 hours, which is far lower than that of the existing construction control net and shaft net laying method, and the method has the advantages of low labor intensity, high precision and basic realization of semi-automation. Because the distance between the moving target point and the control point is measured on the selected control edge by adopting the laser range finder or the total station, the relative distance between the axes is not influenced by accumulated errors and angle measurement errors, the precision is extremely high, the distance between the axis networks can reach the precision error of 1mm of laser ranging equipment theoretically, and the laser range finder is particularly suitable for assembly type buildings.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.