JP2021116684A - Material arrangement system and complete body assembly method - Google Patents

Abstract

To provide a material arrangement system and a complete body assembly method using the same which solve the problems of the prior art and with which a worker in charge of jack adjustment is not assigned and a worker in charge of measurement is not assigned.SOLUTION: A material arrangement system of the present invention is a system in which each individual member is arranged at an appropriate position in order to assemble a complete body composed of two or more individual members, and comprises: an adjustment jack; model storage means; and control means. Of these, the control means obtains the difference between a 3D model and measured data by comparing the 3D model read from the model storage means with the measured data obtained by measuring the positions of the provisionally arranged individual members, and controls the adjustment jack according to the difference.SELECTED DRAWING: Figure 3

Description

The present invention relates to a technique for assembling two or more individual members, and more specifically, to a member arrangement system for automatically arranging individual members at appropriate positions and a method for assembling a finished product using the same.

Bridges are mainly composed of substructures such as abutments and piers and superstructures such as main girders and decks. This main girder may be built directly on the substructure, or it may be erected on the substructure after being assembled elsewhere. In this way, when constructing a structure, for example, the finished product may be assembled in advance in a yard or factory and then installed in a regular place, and the method of assembling the finished product in another place is called "ground assembly". being called.

For example, when assembling the main girder by ground, two or more individual members manufactured at the factory are connected in a yard near the substructure. Then, the finished product, which is a predetermined extension, is erected on a pier or the like. Of course, in order to connect individual members and assemble a finished product, it is performed while managing the finished shape so that the dimensions and shape are as planned.

Conventionally, assembling the main girder on the ground has been performed based on the measurement performed by the operator. Specifically, the "total extension" is managed by measuring the connected individual members with steel tape, etc., and the "street" is measured by measuring the distance from the reference water thread to the connected individual members. The "sled" was managed by managing and measuring the staff placed at predetermined positions on the connected individual members with a spirit level. Then, the position is adjusted by the jacks arranged under the individual members so that the finished product has the planned dimensions and shape.

In order to perform this series of operations, a pair of workers was in charge of measurement, and a pair of workers was also in charge of jack adjustment, that is, four workers were required. However, given the recent labor shortage in the construction industry, it is not desirable to have four workers to manage the finished form of the ground assembly. In addition, the conventional method has a drawback that human error is likely to occur because it depends largely on the judgment of the operator. Furthermore, during the daytime, the temperature of the members tends to change due to the influence of direct sunlight, etc., which may cause deformation of the members due to temperature unevenness. , Early morning and night), and was forced to work overtime.

Therefore, it is conceivable to automate the work related to the finished form management of the ground assembly to save labor. For example, Patent Document 1 proposes a technique for remotely controlling an actuator for moving a controlled body in order to align the controlled body.

Japanese Unexamined Patent Publication No. 2003-341985

Since the technique disclosed in Patent Document 1 controls the actuator by remote control, it is possible to omit an operator who directly operates the actuator, that is, it is possible to save manpower. However, the technique disclosed in Patent Document 1 only aligns the controlled body as a single unit, and does not manage the finished shape of the ground assembly. Therefore, even if the worker in charge of jack adjustment can be omitted, the two workers in charge of measurement are still required.

An object of the present invention is to solve a problem of the prior art, that is, to use a member arrangement system in which a worker in charge of jack adjustment is not assigned and a worker in charge of measurement is not assigned. It is to provide a method of assembling the finished product.

The present invention has been made focusing on the point that the three-dimensional model of the completed body is compared with the position measurement data of the individual members, and the jack is automatically adjusted according to the result, which has not been achieved in the past. It is an invention made based on an idea.

The member arrangement system of the present invention is a system in which each individual member is arranged at an appropriate position in order to assemble a completed body composed of two or more individual members, and includes an adjustment jack, a model storage means, and a control means. Of these, the adjustment jack can move the mounted individual members in three directions, and the model storage means is a means for storing the three-dimensional model of the completed body. Further, the control means obtains the difference between the three-dimensional model and the actually measured data by comparing the three-dimensional model read from the model storage means with the actually measured data obtained by measuring the positions of the provisionally arranged individual members. It is a means for controlling the adjustment jack according to this difference. Then, the control means controls the adjustment jack, and the individual members move in three directions by the difference, so that the individual members are arranged at appropriate positions.

The member arrangement system of the present invention may further include a surveying instrument. This surveying instrument automatically tracks reflectors installed at key points of two or more individual members and measures the coordinates of the reflectors. In this case, the control means compares the measured data measured by the surveying instrument with the three-dimensional model.

The member arrangement system of the present invention may further include a suitability determination means for comparing the difference and the permissible value (which may also be referred to as a "standard value"). This suitability determination means causes the control means to control the adjustment jack if the difference is out of the allowable value range.

The member arrangement system of the present invention may further include two or more temperature detecting means (temperature sensors). In this case, the member arrangement system of the present invention is automatically activated when the temperatures measured by two or more temperature detecting means become substantially uniform (including uniform).

The finished body assembling method of the present invention is a method of assembling a finished body composed of two or more individual members, and is a method including a provisional arrangement step, a measurement step, and an adjustment step. Of these, in the provisional placement process, individual members (individual members to be adjusted) are provisionally placed by placing them on a plurality of adjustment jacks that can be moved in three directions, and in the measurement process, the key points of the individual members are Measure the coordinates and acquire the actual measurement data. Further, in the adjustment step, the difference between the three-dimensional model and the actually measured data is obtained by comparing the three-dimensional model of the completed product with the actually measured data, and the adjustment jack is controlled by using the control means. Then, the control means controls the adjustment jack according to the difference, and the individual members are moved in three directions by the difference to arrange the individual members at appropriate positions, and then the finished product is assembled.

The finished product assembly method of the present invention may be a method further including a suitability determination step. In this suitability determination step, after the adjustment step, the actual measurement data is acquired again, and the difference is obtained by comparing the actual measurement data with the three-dimensional model, and the difference and the allowable value are compared.

The finished body assembly method of the present invention can also be a method of measuring the coordinates of the reflector using a surveying instrument that automatically tracks the reflector installed at a key point of each individual member. In this case, in the adjustment step, the measured data measured by the automatic tracking surveying instrument is compared with the three-dimensional model. Then, in the suitability determination step, if the difference is within the allowable value range, the finished product is assembled, and if the difference is outside the allowable value range, the repeated adjustment step is performed.

The finished body assembly method of the present invention may also be a method of completing the main girder of the bridge by ground assembly. The completed main girder is then installed on the substructure.

The member arrangement system and the finished product assembly method of the present invention have the following effects.
(1) Since no worker in charge of jack adjustment is assigned and no worker in charge of measurement is assigned, labor saving can be significantly reduced as compared with the conventional method.
(2) The 3D model of the completed product is automatically compared with the positions of the tentatively placed individual members, and the jack automatically adjusts the position according to the difference, so it is at the discretion of the operator. However, it is small, that is, human error can be avoided.
(3) Since the measurement and position adjustment are entrusted to the machine, the work can be performed day and night.

The block diagram which shows the main structure of the member arrangement system of this invention. The flow chart which shows the main processing flow of the member arrangement system of this invention. A model diagram schematically showing a situation in which a surveying instrument measures the coordinates of key points of individual members. (A) is a model diagram schematically showing the situation where the measured data is arranged in the three-dimensional coordinate system, and (b) is a model diagram schematically showing the three-dimensional model of the completed product. (A) is a partial perspective view showing an adjustment jack arranged on a gantry and supporting individual members, and (b) is a partial perspective view showing an adjustment jack that expands and contracts independently in the three axial directions. (A) is a side view schematically showing an individual member before the position adjustment is performed, and (b) is a side view schematically showing the individual member after the position adjustment is performed. The flow chart which shows the flow of the main process of the finished body assembly method of this invention. The flow chart which shows the procedure which creates the 3D model based on the tentatively completed body formed by tentatively assembling individual members. A flow chart showing a procedure for creating a three-dimensional model based on a tentative perfect body formed by virtually assembling individual members.

An example of the implementation of the member arrangement system and the finished product assembly method of the present invention will be described with reference to the drawings. The member arrangement system and the finished body assembly method of the present invention can be applied to various objects assembled by two or more independent parts (hereinafter, referred to as "individual members"), but here for convenience, the bridge. An example of the main digit will be described. It should be noted that the assembly of two or more individual members is referred to as a "completed body" here. In other words, the part that divides the main girder in the direction of the bridge axis or the direction perpendicular to the bridge axis is the "individual member", and the one that connects at least two of these individual members is the "completed body", which is not necessarily individual by the length of the bridge. The finished product is not the only one in which the members are connected.

1. 1. Overall Overview According to the present invention, the arrangement of individual members can be controlled at a place different from the place where the individual members are arranged. For example, a local yard is provided near the already constructed substructure, individual members are placed in the local yard, and the placement of the individual members is controlled from a management office or the like away from the local yard. Of course, the arrangement of individual members can be adjusted in the local yard by using a mobile terminal or the like as described later.

2. Member placement system Next, the member placement system of the present invention will be described in detail. The finished product assembly method of the present invention is a method of assembling the finished product using the member arrangement system of the present invention. Therefore, first, the member arrangement system of the present invention will be described, and then the finished assembly method of the present invention will be described.

FIG. 1 is a block diagram showing a main configuration of the member arrangement system 100 of the present invention. As shown in this figure, the member arrangement system 100 of the present invention includes a control means 101, an adjustment jack 102, and a model storage means 103, and further includes a surveying instrument 104, a suitability determination means 105, and a display means 106 such as a display. It can also be configured with.

The control means 101 and the suitability determination means 105 constituting the member arrangement system 100 can be manufactured as dedicated ones, or a general-purpose computer device can be used. This computer device includes a processor such as a CPU, a memory such as a ROM and a RAM, an input means such as a mouse and a keyboard, and a display (display means 106), and is a personal computer (PC) or a tablet such as an iPad (registered trademark). It can be configured by a type PC, a mobile terminal including a smartphone, and the like. When using a computer device, the computer device can be placed in a place different from individual members such as a management office, and can be carried by an operator, especially when using a tablet PC or a mobile terminal. When a computer device is installed in a management office or the like, a wireless communication (or wired communication) means is provided to send a signal to the adjustment jack 102 or to perform data communication with the surveying instrument 104 as described later. It is good.

Further, the model storage means 103 can use a storage device of a general-purpose computer or can be built on a database server. When it is built on a database server, it can be placed on a local network (LAN: Local Area Network), or it can be a cloud server that saves via the Internet (that is, wireless communication).

Hereinafter, the main processing performed by using the member arrangement system 100 will be described in detail mainly with reference to FIG. FIG. 2 is a flow chart showing a main processing flow of the member arrangement system 100 of the present invention. In these flow charts, the central column shows the actions to be performed, the left column shows what is necessary for the action, and the right column shows what results from the action.

First, steel materials such as H-shaped steel are laid out to install a pedestal, and adjustment jacks 102 are arranged at key points (for example, four corners of individual members). Then, the first individual member is placed on the plurality of adjustment jacks 102, and subsequently the second individual member is also placed on the plurality of adjustment jacks 102. When connecting three or more individual members, they are placed in the order of third, fourth, .... As will be described later, since it is possible not to adjust the position of the reference individual member, one individual member (for example, the first individual member) is not placed on the adjustment jack 102 (for example, the first individual member) is not placed on the adjustment jack 102. That is, the adjustment jack 102 may not be arranged under one of the individual members). Here, the positions of the individual members placed on the adjustment jack 102 do not have to be accurate, and are only provisional. Further, the first individual member and the second individual member mounted on the adjustment jack 102 may be temporarily connected by temporary tightening bolts.

When the planned number of individual members (for convenience, described here in the case of two) are placed on the adjustment jack 102, the key points of the individual member DE (for example, the corner portion) as shown in FIG. Etc.) (Step 10 in FIG. 2). FIG. 3 is a model diagram schematically showing a situation in which the surveying instrument 104 measures the coordinates of the key points of the individual member DE. The surveying instrument 104 can use a normal total station (TS: Total Station), can use an automatic tracking type total station, can use a camera for photographic surveying, or can use a laser. You can use a scanner, a measurement method that uses a 3D-TOF (Time of Flight) camera to acquire 3D coordinates without using a reflector, or various other conventional surveying means. You can also use it. When an automatic tracking type total station is used as the surveying instrument 104, a surveying prism (also called a mirror or a target) is installed at a key point of the individual member DE. That is, the automatic tracking type surveying instrument 104 automatically detects the surveying prism and then acquires the position (three-dimensional coordinates) of the surveying prism. Further, the coordinates of the surveying prism (hereinafter referred to as "actual measurement data") measured by the automatic tracking type surveying instrument 104 are transmitted to the control means 101 via wireless communication (or wired communication) means, and the control means. 101 receives this actual measurement data.

When the measured data is obtained, the control means 101 reads out the three-dimensional model from the model storage means 103 and compares the measured data with the three-dimensional model (Step 20 in FIG. 2). Here, the "three-dimensional model" is a model of a completed body in which a plurality of individual member DEs are connected in a correct arrangement, and is a three-dimensional shape (that is, three-dimensional) model created in a virtual space of a computer. It should be noted that this three-dimensional model can be created directly from the design drawing, or can be created based on a "temporary perfected body" in which the individual member DEs are temporarily assembled according to the design drawing. When creating directly from the design drawing, a 3D model can be created from the design drawing data by, for example, operating 3D-CAD (Computer-Aided Design). On the other hand, when creating based on the temporary finished body, the individual member DE is actually temporarily assembled according to the design drawing data, and the temporary finished body is completed so that the difference from the design drawing data is minimized. Then, a reference hole (pilot hole) and a reference line are set so that the shape can be reproduced at the actual site, and a three-dimensional model is created based on the three-dimensional coordinates obtained by surveying the shape of the temporary completed body. can do. Alternatively, a three-dimensional model is created by measuring the shape of each individual member DE, acquiring three-dimensional coordinates, and virtually assembling (simulating) the individual member DE on, for example, a 3D-CAD computer based on these three-dimensional coordinates. You can also do it. Since the actually measured data is also three-dimensional coordinates, it is possible to compare (for example, superimpose) the actually measured data with the three-dimensional model by matching the coordinate system. FIG. 4A shows a situation in which the measured data is arranged in the three-dimensional coordinate system, and FIG. 4B shows a three-dimensional model of the completed product. It is preferable to create a three-dimensional model in advance and store it in the model storage means 103.

When comparing the measured data with the 3D model, it is advisable to set the coordinate system based on the measured data. For example, the key point (surveying prism) of the first individual member DE is set as the origin, the member axial direction (or bridge axis direction) of the individual member DE is the X axis, and the member axis perpendicular direction (or the individual member DE). The direction perpendicular to the bridge axis) is the Y-axis, and the vertical axis is the Z-axis. Of course, the position of the origin and the axial direction can be set as appropriate.

By the way, since the individual member DE is provisionally arranged, the position of the individual member DE should not be as planned at this stage. Therefore, if the measured data and the three-dimensional model are arranged in the same coordinate system, there is a difference (deviation) between the two. More specifically, the measured data of the individual member DE for which the coordinate system is set (for example, the first individual member DE) and the three-dimensional model are substantially the same, but the other individual member DE (for example, the second individual member DE) is substantially the same. There is a difference between the measured data of DE) and the 3D model. Therefore, the control means 101 obtains the coordinate difference (dX, dY, dZ) in the three-axis direction between the actually measured data and the three-dimensional model as a difference.

When the difference between the measured data and the three-dimensional model is obtained, the control means 101 adjusts the position of the individual member DE by controlling the adjustment jack 102 (Step 30 in FIG. 2). As shown in FIG. 5A, the adjusting jack 102 is arranged on a pedestal TR on which steel materials such as H-shaped steel are laid, and supports the individual member DE at key points. Further, as shown in FIG. 5B, the adjustment jack 102 can independently move the individual member DE in the three axial directions. More specifically, a control signal is transmitted from the control means 101 to the electric pump EP via wireless communication (or wired communication) means, and the electric pump EP that receives the control signal adjusts the adjustment jack 102 in the three-axis direction according to the control signal. Expand and contract. At this time, the control means 101 transmits a control signal such that the individual member DE moves by the difference (dX, dY, dZ) between the actually measured data and the three-dimensional model.

6A and 6B are model diagrams schematically showing a situation in which the position of the individual member DE is adjusted. FIG. 6A shows a side view of the individual member DE before the position adjustment is performed, and FIG. 6B shows the position adjustment. The side view of the individual member DE after that is shown. In the example of this figure, the coordinate system is set with the key point of the individual member A (individual member DE on the left side in the figure) as the origin, and therefore the position of the individual member B (individual member DE on the right side in the figure) is adjusted. is doing. That is, since the individual member B shown in FIG. 6A is inclined upward to the right with respect to the planned arrangement (horizontal arrangement in this case), the adjustment jack 102 on the individual member B side is vertically aligned by the difference (dZ). By contracting in the direction, the individual members B are adjusted so as to have the planned arrangement as shown in FIG. 6 (b). In this figure, the position of the individual member DE is adjusted only in the vertical direction, but of course, when there is a difference (dX, dY) in the horizontal direction, it expands and contracts by the difference (dX, dY). The adjustment jack 102 is controlled so as to.

Even if the positions of the individual member DEs are adjusted by the difference (dX, dY) obtained by the control means 101, the individual member DEs may not be arranged as planned. Therefore, it is preferable that the suitability determination means 105 determines the suitability of the arrangement of the individual member DE after adjustment. In this case, the measured data of the adjusted individual member DE is sent to the control means 101. When using an automatic tracking type total station, the surveying instrument 104 automatically detects the surveying prism, so that the coordinates of the individual member DE are continuously measured without the operator performing any special operation.

When the actual measurement data of the individual member DE after movement is obtained by the remeasurement, the control means 101 again obtains the difference (dX, dY, dZ) between the actual measurement data and the three-dimensional model, and obtains a predetermined allowable value (“standard value”). "May be). This permissible value may be set in a range including positive and negative (for example, "-10 mm or more and 10 mm or less"). Here, if the difference is out of the allowable value range for any one of the three axes (No in Step 40 in FIG. 2), the suitability determination means 105 repositions the individual member DE with respect to the control means 101. Send a signal to make adjustments. Then, the control means 101 that receives this signal controls the adjustment jack 102 so as to expand and contract by the difference (dX, dY, dZ) obtained by the remeasurement. On the other hand, if the difference between all three axes is within the allowable value range (Yes in Step 40 in FIG. 2), the suitability determination means 105 outputs information such as "completed" to, for example, the display means 106, and also outputs information such as "completed". The measurement of the automatic tracking type surveying instrument 104 is stopped via the control means 101.

The member arrangement system 100 of the present invention can be specified to be activated by an operator's operation. That is, when the operator gives a predetermined instruction (operation such as clicking), a series of processes by the member arrangement system 100 is started. By the way, as described above, the temperature of the member is likely to change due to the influence of direct sunlight or the like during the daytime, and the member may be deformed due to temperature unevenness. Under such circumstances, it is difficult to properly arrange the individual member DEs even by the member arrangement system 100. Therefore, a sensor that detects the temperature is installed at a predetermined position of the individual member DE (for example, above and below the individual member DE), and when each temperature (for example, the upper and lower temperatures) becomes substantially uniform (including uniform) (for example). , It is advisable to specify that this system starts automatically (when the temperature difference between the top and bottom falls below a predetermined threshold value). Specifically, the individual member DE is provisionally arranged during the daytime, and the member arrangement system 100 is automatically activated at night when the temperature stabilizes, and a series of processes (for example, measurement of the individual member to adjustment jack) are performed. Control) is performed. Alternatively, a preset time can be used as a trigger for activation, regardless of temperature (ie, without installing a temperature sensor). In this case, the member arrangement system 100 is provided with a timer, and the system is automatically started at a predetermined time (for example, 22:00).

3. 3. Completed Assembling Method Next, the completed assembling method of the present invention will be described with reference to FIG. 7. The method of assembling the finished product of the present invention is a method of assembling the finished product using the member arranging system 100 described so far. Therefore, the description overlapping with the contents described in the member arranging system 100 is avoided, and the present invention is completed. Only the contents specific to the body assembly method will be explained. That is, the contents not described here are the same as those described in "2. Member arrangement system".

First, steel materials such as H-shaped steel are laid out to install the gantry TR, and adjustment jacks 102 are arranged at key points (for example, the four corners of the individual member DE) (Step 101 in FIG. 7). In addition, a three-dimensional model is created in advance. As described above, the three-dimensional model can be created directly from the design drawing, or can be created based on the "temporary completed body" in which the individual member DE is temporarily assembled according to the design drawing. When creating directly from the design drawing, a 3D model can be created from the design drawing data, for example, by operating 3D-CAD. On the other hand, when it is created based on a temporary finished product, it can be created by the procedure shown in FIGS. 8 and 9. In the case of FIG. 8, first, the individual member DE is temporarily assembled according to the design drawing data (Step 101a in FIG. 8) and compared with the design drawing data, and when the difference from the design drawing data is minimized, it is provisionally assembled. (Step 101b in FIG. 8). Then, a reference hole (pilot hole) and a reference line are installed so that the shape can be reproduced at the actual site, and the shape of the temporary finished body is surveyed (Step 101c in FIG. 8), and the three-dimensional coordinates obtained here are obtained. A three-dimensional model is created based on (Step 101d in FIG. 8). In the case of FIG. 9, the shape of each individual member DE is first measured to obtain three-dimensional coordinates (Step 101e in FIG. 8), and based on these three-dimensional coordinates, for example, a virtual individual member DE is virtualized on a 3D-CAD computer. Assembly (simulation) is performed (Step 101f in FIG. 8), and a three-dimensional model is created based on the tentatively completed body formed by this virtual assembly (Step 101d in FIG. 8). Then, the first individual member DE is placed on the plurality of adjustment jacks 102, and subsequently the second individual member DE is also placed on the plurality of adjustment jacks 102 (Step 102 in FIG. 7). At this time, the reference individual member DE (for example, the first individual member DE) may not be placed on the adjustment jack 102 (that is, the adjustment jack 102 is not placed under one of the individual members DE). can. Here, the position of the individual member DE placed on the adjustment jack 102 does not have to be accurate, and is only provisional. The first individual member DE and the second individual member DE mounted on the adjustment jack 102 are temporarily connected by temporary tightening bolts (Step 103 in FIG. 7).

When the planned number of individual member DEs (described in the case of two here for convenience) are placed on the adjustment jack 102, the coordinates of the key points of the individual member DEs are measured (Step 104 in FIG. 7). .. More specifically, after the automatic tracking type surveying instrument 104 automatically detects the surveying prism installed at the key point of the individual member DE, the position (three-dimensional coordinates) of the surveying prism, that is, the measured data is obtained. get.

When the measured data is obtained, the measured data is compared with the three-dimensional model using the control means 101, and the difference (dX, dY, dZ) between the measured data and the three-dimensional model is obtained (Step 105 in FIG. 7). Then, the position of the individual member DE is adjusted by controlling the adjustment jack 102 using the control means 101 (Step 106 in FIG. 7).

When the position of the individual member DE is adjusted, the coordinates of the key points of the individual member DE are measured again (Step 107 in FIG. 7). When using an automatic tracking type total station, the surveying instrument 104 automatically detects the surveying prism, so the coordinates of the individual member DE after movement must be remeasured without the operator performing any special operation. Can be done.

When the actual measurement data of the individual member DE after movement is obtained by the remeasurement, the difference (dX, dY, dZ) between the actual measurement data and the three-dimensional model is obtained again, and the difference and the allowable value are compared with the suitability determination means 105. (Step 108 in FIG. 7). Here, if the difference is out of the allowable value range for any one of the three axes (No in Step 108 in FIG. 7), the position of the individual member DE is adjusted again. On the other hand, if the difference between all three axes is within the allowable value range (Yes in Step 108 in FIG. 7), the first individual member DE and the second individual member DE are connected (bolts are tightened). As a result, a completed body is constructed (Step 109 in FIG. 7), and this completed body is erected at a predetermined position on an abutment or a pier (Step 110 in FIG. 7).

The member arrangement system and the finished body assembly method of the present invention can be used for bridges for all purposes such as road bridges, railway bridges, and pipeline bridges, and are used in various cases for completing long objects other than the main girder of the bridge. be able to. Considering that the invention of the present application solves the problem of labor shortage in the construction industry, it can be said that the invention can be used not only industrially but also can be expected to make a great contribution to society.

100 Member placement system 101 (of member placement system) Control means 102 (of member placement system) Adjustment jack 103 (of member placement system) Model storage means 104 (of member placement system) Surveying instrument 105 (of member placement system) ) Appropriateness judgment means 106 Display means (of member placement system) EP Electric pump DE Individual member TR pedestal

Claims (8)

A system in which each individual member is placed in an appropriate position in order to assemble a completed body composed of two or more individual members.
An adjustment jack that can move the mounted individual members in three directions,
A model storage means for storing the three-dimensional model of the completed product, and
By comparing the three-dimensional model read from the model storage means with the actually measured data obtained by measuring the positions of the tentatively arranged individual members, the difference between the three-dimensional model and the actually measured data is obtained. A control means for controlling the adjustment jack according to the difference is provided.
The control means controls the adjustment jack, and the individual member moves in three directions by the difference, so that the individual member is arranged at an appropriate position.
A member placement system characterized by this. A surveying instrument for automatically tracking a reflector installed at a key point of the individual member and measuring the coordinates of the reflector is further provided.
The control means compares the measured data measured by the surveying instrument with the three-dimensional model.
The member arrangement system according to claim 1. A suitability determination means for comparing the difference and the permissible value is further provided.
The suitability determination means causes the control means to control the adjustment jack if the difference is out of the allowable value range.
The member arrangement system according to claim 1 or 2, wherein the member arrangement system is characterized in that. Further equipped with two or more temperature detecting means installed at predetermined positions of individual members,
Automatically starts when the temperature measured by two or more of the temperature detecting means becomes uniform or substantially uniform.
The member arrangement system according to any one of claims 1 to 3, wherein the member arrangement system is characterized in that. It is a method of assembling a finished product consisting of two or more individual members.
A provisional arrangement step of tentatively arranging the individual members by placing the individual members to be adjusted on a plurality of adjustment jacks that can be moved in three directions.
A measurement process that measures the coordinates of the key points of the individual members and acquires actual measurement data,
It is provided with an adjustment step of obtaining a difference between the three-dimensional model and the actually measured data by comparing the three-dimensional model of the completed body with the actually measured data and controlling the adjustment jack by using a control means. ,
The control means controls the adjustment jack according to the difference, and the individual member is moved in three directions by the difference to arrange the individual member in an appropriate position, and then the finished product is assembled.
A method of assembling a finished product, which is characterized by the fact that. In the measurement step, a reflector installed at a key point of the individual member is automatically tracked and measured using a surveying instrument that measures the coordinates of the reflector.
In the adjustment step, the actual measurement data measured by the surveying instrument is compared with the three-dimensional model.
5. The member arrangement system according to claim 5. After the adjustment step, the measurement data is acquired again, and the difference is obtained by comparing the measurement data with the three-dimensional model, and a suitability determination step of comparing the difference and the permissible value is further provided.
In the suitability determination step, if the difference is within the allowable value range, the finished product is assembled, and if the difference is outside the allowable value range, the adjustment step is repeated.
The finished body assembly method according to claim 5 or 6, wherein the finished product is assembled. The completed body is the main girder of the bridge, and the main girder completed by ground assembly is installed on the substructure.
The finished body assembly method according to any one of claims 5 to 7, wherein the finished product is assembled.

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