Measurement system

Abstract

To provide a jig and a measurement system that are able to reduce time and effort for inspecting the position of an anchor frame.SOLUTION: A jig includes: an installation portion (a body portion 110) installed in an anchor frame 5 supporting a plurality of anchor bolts 4 of a foundation 2 of a building; a target portion 130 provided in the installation portion (the body portion 110) and capable of reflecting light; and a setting portion (a rear surface of a first portion 111 and a left surface of a second portion 112) capable of setting the target portion 130 at any measurement position (a center in a plan view) with respect to a center in a plan view of the anchor frame 5.SELECTED DRAWING: Figure 1

Description

Technical Field

[0006] , ,

[0001] The present invention relates to a jig and a measurement system used for inspecting the position of an anchor frame.

Background Art

[0002] Conventionally, it is known to provide an anchor bolt used for fixing a structure such as a steel column to the foundation of a building. A plurality of the above anchor bolts are provided for one fixing location of a steel column. The plurality of the above anchor bolts are supported by an anchor frame. When such an anchor bolt is installed, it is known to perform an inspection as to whether the position of the anchor bolt is appropriate. For the above inspection, a device capable of measuring the distance to a target is used. For example, it is as described in Patent Document 1.

[0003] Patent Document 1 describes a surveying system that measures the distance to a measurement point by installing a target device at the measurement point and irradiating the target device with ranging light from a total station.

[0004] When inspecting the position of an anchor bolt using the above surveying system, it is necessary to install a target device for each installation position of a plurality of anchor bolts (the installation positions of the plurality of anchor bolts supported by an anchor frame) and perform measurement. For this reason, it is considered that the inspection is laborious.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] This invention was made in view of the above circumstances, and the problem it aims to solve is to reduce the effort required to inspect the position of the anchor frame. ru We provide measurement systems. [Means for solving the problem]

[0007] The problems that this invention aims to solve are as described above, and the means for solving these problems will now be explained.

[0008] In other words, in claim 1, A jig capable of positioning a light-reflecting target at any measurement position relative to the center of the plan view of an anchor frame supporting multiple anchor bolts of the building's foundation; a measuring instrument capable of measuring the position of the target by irradiating the target with light; and a control device capable of performing an inspection of the position of the anchor frame based on the measurement results of the measuring instrument. It is equipped with the following features.

[0009] In claim 2, The jig comprises an installation portion installed on the anchor frame, a target portion provided on the installation portion, and a setting portion capable of setting the target portion at any measurement position relative to the center of the anchor frame in a plan view. It is.

[0010] In claim 3, The jig includes a mounting portion that allows the installation portion to be attached to the anchor frame when the target portion is set to the measurement position. It is.

[0011] In claim 4, The mounting portion is provided so as to be movable relative to the installation portion and is attached to the anchor frame by abutting against the outer edge of the anchor frame. It is.

[0012] In claim 5, The jig comprises an adjustment part that can adjust the angle of the target part relative to the anchor frame. It is.

[0013] In claim 6, The jig is equipped with a spirit level that can confirm the horizontal state of the target portion. It is.

[0014] In claim 7, The setting unit includes a first setting unit capable of setting the position of the target unit in a first direction, and a second setting unit capable of setting the position of the target unit in a second direction perpendicular to the first direction. It is equipped with the following features. [Effects of the Invention]

[0015] The present invention provides the following effects:

[0016] Claim 1 reduces the effort required to inspect the position of the anchor frame.

[0017] In claim 2, This reduces the effort required to inspect the position of the anchor frame.

[0018] In claim 3, This prevents the jig from shifting relative to the anchor frame.

[0019] In claim 4, The jig can be positioned relative to the anchor frame.

[0020] In claim 5, This can improve the accuracy of measurements.

[0021] In claim 6, This improves the ease of adjusting the angle of the target part relative to the anchor frame.

[0022] In claim 7, This makes it easier to position the target at the measurement location.

Brief Description of the Drawings

[0023] [Figure 1] Side view showing a measurement system and the foundation of a building according to an embodiment of the present invention. [Figure 2] Block diagram showing the measurement system. [Figure 3] Front view showing the jig. [Figure 4] Plan view showing the jig and the anchor bolt set. [Figure 5] Plan view showing the jig. [Figure 6] (a) Enlarged plane cross-sectional view of X2-X2 in FIG. 6(b). (a) Enlarged side cross-sectional view of X1-X1 in FIG. 6(a). [Figure 7] Flowchart showing the measurement procedure using the measurement system.

Mode for Carrying Out the Invention

[0024] Hereinafter, a measurement system 1 according to an embodiment of the present invention will be described. In the following description, the vertical direction, the horizontal direction, and the front-rear direction are defined according to the arrows shown in the drawings, respectively.

[0025] ​​

[0026] Foundation 2 supports the steel columns (not shown), which are structural elements of the steel-framed building. Foundation 2 is made of reinforced concrete. Specifically, Foundation 2 is formed by pouring concrete into a formwork 6, which is shaped according to the formwork 6, with predetermined reinforcing bars (not shown) and anchor bolt sets 3 placed inside the formwork 6. The anchor bolt sets 3 are embedded in Foundation 2. Figure 1 shows the state before concrete is poured, with the anchor bolt sets 3 placed inside the formwork 6.

[0027] Anchor bolt set 3 is used to fix steel columns to foundation 2. Multiple anchor bolt sets 3 are installed to correspond to the locations where multiple steel columns are installed. Anchor bolt set 3 comprises anchor bolts 4 and anchor frames 5.

[0028] The anchor bolts 4 shown in Figures 1 and 4 are members that fix the steel column. The anchor bolts 4 are formed in a vertically elongated cylindrical shape (rod shape). The anchor bolts 4 have male threads that fit onto nuts for fixing the steel column. As shown in Figure 4, multiple anchor bolts 4 (four in this embodiment) are provided for one steel column. Note that the number of anchor bolts 4 is not limited to the example above and can be appropriately set according to the type of steel column. Multiple anchor bolts 4 are supported from below by being fixed to a base plate.

[0029] The anchor frame 5 shown in Figures 1 and 4 supports the upper parts of multiple anchor bolts 4. The anchor frame 5 is formed in a rectangular plate shape in plan view, with its thickness direction oriented vertically. In the example figures, the anchor frame 5 is shown as being approximately square in plan view. The anchor frame 5 has a rectangular opening in the center in plan view. The anchor frame 5 also has multiple holes (four in this embodiment) through which the upper parts of the multiple anchor bolts 4 are inserted. The anchor frame 5 is fixed to the anchor bolts 4 by fastening the upper parts of the anchor bolts 4 inserted through the holes with appropriate nuts. The anchor frame 5 has a marking portion 5a.

[0030] The markings 5a shown in Figure 4 are markers indicating the center position of the anchor frame 5 (anchor bolt set 3) in a plan view. In this embodiment, the markings 5a are formed by providing a roughly triangular notch in the center of each side of the outer edge of the anchor frame 5 in a plan view. As shown in Figure 4, the intersection of the imaginary lines (dashed lines) connecting the vertices of the markings 5a on each side of the anchor frame 5 (vertices facing the center in a plan view) indicates the center of the anchor frame 5 in a plan view.

[0031] Alternatively, instead of or in addition to the marking portion 5a described above, a straight line marking along the imaginary line may be provided on the surface of the anchor frame 5. Furthermore, the marker indicating the center of the anchor frame 5 in plan view is not limited to the marking portion 5a or the straight line marking; various markers such as appropriate patterns or indentations can be used.

[0032] Foundation 2 is formed by removing formwork 6 after the concrete poured into it has hardened. The anchor frame 5 is removed from anchor bolts 4 after the concrete has hardened and before the steel columns are fixed to foundation 2.

[0033] Next, we will explain the details of the measurement system 1 using Figures 1 to 6.

[0034] The measurement system 1 inspects whether the position of each anchor bolt 4 is appropriate by measuring the position of the anchor frame 5 (anchor bolt set 3) which is the object of measurement. The measurement system 1 comprises a measuring instrument 10, a control device 20, a reference point prism 30, a measuring prism 40, and a jig 100.

[0035] The measuring instrument 10 shown in Figures 1 and 2 is capable of measuring the position of the object to be measured (the reference point prism 30, measuring prism 40, and target unit 130, which will be described later) using light (light waves). The measuring instrument 10 is installed at any position at the construction site of the foundation 2 using an appropriate tripod or the like. The measuring instrument 10 comprises a measuring unit 11, an input unit 12, a display unit 13, a storage unit 14, a control unit 15, and a communication unit 16.

[0036] The measurement unit 11 is the part that irradiates light waves and detects the light waves reflected from the object to be measured. The measurement unit 11 is provided so that the direction of light wave irradiation can be changed by an appropriate mechanism.

[0037] The input unit 12 is for inputting various types of information. The input unit 12 consists of multiple buttons. The operator can use the input unit 12 to perform various operations on the measuring instrument 10.

[0038] The display unit 13 displays various types of information. The display unit 13 is composed of, for example, a liquid crystal display. The display unit 13 displays information for operating the measuring instrument 10.

[0039] The memory unit 14 stores various programs and various acquired information. The memory unit 14 is composed of RAM, ROM, etc. In addition, the memory unit 14 stores data used for measurements using the measuring instrument 10, such as the drawing data of the base 2.

[0040] The control unit 15 executes the program stored in the memory unit 14. The control unit 15 is composed of a CPU.

[0041] The communication unit 16 is capable of communicating with external devices such as the control device 20, which will be described later. The communication unit 16 can exchange information with external devices via various communication means, such as the internet, Bluetooth (registered trademark), and Wi-Fi (registered trademark).

[0042] The control device 20 is capable of processing various types of information. The control device 20 is installed, for example, in a facility (e.g., an office) of a manager who oversees the construction of a building. A general-purpose personal computer can be used as the control device 20. The control device 20 comprises a storage unit 21, a control unit 22, a communication unit 23, an input unit 24, and a display unit 25.

[0043] The memory unit 21 stores various programs and acquired information. The memory unit 21 is composed of an HDD, RAM, ROM, etc.

[0044] The control unit 22 executes the program stored in the memory unit 21. The control unit 22 is composed of a CPU.

[0045] The communication unit 23 is capable of communicating with external devices such as measuring instruments 10. The communication unit 23 can exchange information with external devices via various communication means, such as the internet.

[0046] The input unit 24 is for inputting various types of information. The input unit 24 consists of a keyboard, mouse, etc.

[0047] The display unit 25 displays various types of information. The display unit 25 is composed of, for example, a liquid crystal display.

[0048] The reference point prism 30 shown in Figure 1 is installed at a predetermined reference point at the construction site of the foundation 2 and is capable of reflecting light waves emitted from the measuring unit 11 of the measuring instrument 10. Two reference point prisms 30 are placed at each of the two reference points. In the example shown, one reference point prism 30 is depicted. The reference point prism 30 is supported by an appropriate support member, such as a tripod.

[0049] The measuring prism 40 is positioned on any object to be measured (for example, the completed foundation 2) and is capable of reflecting light waves emitted from the measuring unit 11 of the measuring instrument 10. The measuring prism 40 is positioned on the object to be measured by being supported by the hands of the worker (measurer).

[0050] The jig 100 shown in Figures 3 to 6 is used to measure the position of the anchor frame 5. The jig 100 is installed on the upper surface of the anchor frame 5 to be measured. The jig 100 comprises a main body 110, a sliding part 120, a target part 130, and a spirit level 140.

[0051] The main body 110 is the primary structure of the jig 100. As shown in Figures 3 to 5, the main body 110 is formed in a substantially T-shape in plan view. The main body 110 is also formed from a substantially plate-shaped member with its thickness direction oriented vertically. The main body 110 is made of, for example, a metal material. The main body 110 comprises a first part 111 and a second part 112.

[0052] The first portion 111 is a portion that extends in the left-right direction. As shown in Figure 4, the left-right dimension (length) of the first portion 111 is formed to be larger than the left-right dimension (length of one side) of the anchor frame 5. The first portion 111 has an elongated hole 111a and a height adjustment bolt hole 111b.

[0053] The elongated holes 111a are holes that penetrate the first portion 111 vertically and are elongated in the left-right direction. A pair of elongated holes 111a are formed so as to be located on both sides of the first portion 111 in the left-right direction. The pair of elongated holes 111a are formed to extend from both ends of the first portion 111 toward the center in the left-right direction.

[0054] The height adjustment bolt hole 111b is a hole that penetrates the first portion 111 vertically and has an internal thread formed therein that can be fitted to a height adjustment bolt, which will be described later. A pair of height adjustment bolt holes 111b are formed adjacent to a pair of elongated holes 111a. Specifically, the height adjustment bolt holes 111b are formed to be located closer to the left-right center of the first portion 111 than the elongated holes 111a.

[0055] The second portion 112 is a portion that extends in the front-rear direction. As shown in Figure 5, the second portion 112 is formed to extend rearward from the rear surface of the first portion 111, approximately in the left-right center. The left side of the second portion 112 is formed so that its left-right position is located at the left-right center of the first portion 111. The length of the second portion 112 is formed to be approximately half the length of the first portion 111. The second portion 112 has an elongated hole 112a and a height adjustment bolt hole 112b.

[0056] The elongated hole 112a penetrates the second portion 112 vertically and is elongated in the front-to-back direction. The elongated hole 112a is formed to extend from the rear end of the second portion 112 toward the first portion 111.

[0057] The height adjustment bolt hole 112b is a hole that penetrates the second portion 112 vertically and has an internal thread formed therein that can be fitted to a height adjustment bolt, which will be described later. The height adjustment bolt hole 112b is formed to be located closer to the first portion 111 than the elongated hole 112a.

[0058] As shown in Figure 4, the main body 110 described above is formed such that, when installed on the anchor frame 5, the first part 111 and the second part 112 extend across both the left and right sides and the rear of the anchor frame 5, respectively. The shape (length dimension) of the first part 111 and the second part 112 can be appropriately set according to the shape (dimensions) of the anchor frame 5 so that the first part 111 and the second part 112 extend across both the left and right sides and the rear of the anchor frame 5, respectively.

[0059] Furthermore, in the following explanation, the intersection of the rear surface of the first part 111 and the left surface of the second part 112, as shown in Figure 5, will be referred to as the "planar center P of the main body 110."

[0060] The sliding parts 120 shown in Figures 3 to 6 are parts that are slidably provided along the longitudinal direction of the first part 111 and the second part 112. The sliding parts 120 are provided at three locations: on both the left and right sides of the first part 111 and on the second part 112.

[0061] In the following section, we will focus on the slide section 120 provided on the right side of the first section 111 and describe the details of the configuration of the slide section 120. The slide section 120 comprises a slide body 121, fastening bolts 122, and height adjustment bolts 123.

[0062] The slide body portion 121 is the main structure of the slide portion 120. The slide body portion 121 is formed of, for example, a metal material. The slide body portion 121 comprises an inner portion 121a, an outer portion 121b, an opening 121c, fastening bolt holes 121d, and height adjustment bolt holes 121e.

[0063] The inner portion 121a is the part that constitutes the inside (left side) of the slide body portion 121. The inner portion 121a is formed in a substantially rectangular shape in both a plan view and a side view.

[0064] The outer portion 121b is the outer (right) part of the slide body portion 121. The outer portion 121b is formed in a substantially rectangular shape in plan view and side view. As shown in Figure 3, the lower end of the outer portion 121b is formed to be located lower than the inner portion 121a. As a result, a step is formed at the bottom of the slide body portion 121. Also, as shown in Figure 5, the width dimension (front-to-back dimension) of the outer portion 121b is formed to be larger than the front-to-back dimension of the inner portion 121a. Furthermore, the width dimension of the outer portion 121b is formed to be larger than the width dimension of the marking portion 5a on each side of the anchor frame 5 (see Figure 4).

[0065] The opening 121c shown in Figure 6 is a portion that penetrates the slide body 121 in the left-right direction. The first portion 111 is inserted through the opening 121c. The opening 121c is formed in a shape that generally corresponds to the shape of the first portion 111. By inserting the first portion 111 through the opening 121c, the slide portion 120 can slide along the length direction of the first portion 111.

[0066] The fastening bolt hole 121d shown in Figure 6(a) is a hole with an internal thread formed therein that can be fitted to the fastening bolt 122, which will be described later. The fastening bolt hole 121d is formed on the front surface of the outer part 121b of the slide body 121 so as to communicate with the opening 121c.

[0067] The height adjustment bolt hole 121e shown in Figure 6(b) is a hole with an internal thread that can be fitted to the height adjustment bolt 123, which will be described later. The height adjustment bolt hole 121e is formed to penetrate vertically through the inner part 121a of the slide body 121.

[0068] The fastening bolt 122 shown in Figure 6(a) is capable of fixing the sliding portion 120 to the first portion 111 at any position. The fastening bolt 122 has a male thread that fits into the female thread of the fastening bolt hole 121d.

[0069] The height adjustment bolt 123 shown in Figure 6(b) allows for adjustment of the height of the sliding portion 120 relative to the anchor frame 5. The height adjustment bolt 123 has a male thread that fits into the female thread of the height adjustment bolt hole 121e.

[0070] As shown in Figure 6(b), the height adjustment bolt 123 is provided so as to pass through the sliding portion 120 and the elongated hole 111a of the first portion 111. The lower end of the height adjustment bolt 123 is located below the lower surface of the first portion 111. In this state, when the jig 100 is installed on the anchor frame 5, the lower end of the height adjustment bolt 123 abuts against the upper surface of the anchor frame 5.

[0071] Furthermore, the height adjustment bolt 123 can be inserted not only through the height adjustment bolt hole 121e of the slide part 120, but also through the height adjustment bolt hole 111b (112b) of the main body part 110.

[0072] The following describes the procedure for sliding and adjusting the height of the sliding section 120.

[0073] As shown in Figure 6(a), the sliding portion 120 is slidable along the longitudinal direction of the first portion 111 with the first portion 111 inserted through the opening 121c. The sliding portion 120 is restricted from moving beyond the range in which the elongated hole 111a is formed by the height adjustment bolt hole 121e inserted through the elongated hole 111a.

[0074] As shown in Figure 6(a), with the slide portion 120 moved to an arbitrary position, the fastening bolt 122 can be screwed into the fastening bolt hole 121d and the first portion 111 can be pressed backward, thereby fixing the slide portion 120 to the first portion 111.

[0075] Furthermore, as shown in Figure 6(b), the height of the slide portion 120 (slide body portion 121) relative to the anchor frame 5 can be adjusted by operating the height adjustment bolt 123. That is, the height adjustment bolt 123 and the height adjustment bolt hole 121e of the slide body portion 121 are fitted together by screws. Therefore, by rotating the height adjustment bolt 123 in a predetermined direction so that it protrudes further downward (by screwing it in), the slide body portion 121 can be displaced upward. Also, by rotating the height adjustment bolt 123 in the opposite direction to the above predetermined direction, the slide body portion 121 can be displaced downward.

[0076] In this embodiment, the jig 100 allows for adjusting the height of the slide body portion 121, thereby adjusting the height of the end portion of the main body portion 110 (the right end portion of the first portion 111) inserted into the slide body portion 121 relative to the anchor frame 5.

[0077] The configuration of the sliding section 120 provided on the right side of the first section 111 has been described above. Here, the sliding section 120 provided on the second section 112 shown in Figure 5 has the same configuration as the sliding section 120 provided on the right side of the first section 111. Also, the sliding section 120 provided on the left side of the first section 111 has the same configuration as the sliding section 120 on the right side, except that it is a mirror image. Therefore, a detailed explanation of the sliding section 120 of the second section 112 and the sliding section 120 on the left side of the first section 111 will be omitted.

[0078] The target section 130 shown in Figures 3 and 5 is capable of reflecting light waves emitted from the measuring section 11 of the measuring instrument 10 at the center P of the main body section 110 in a plan view. The target section 130 comprises a reflecting section 131 and a support section 132.

[0079] The reflective section 131 is the part that reflects the light waves irradiated from the measuring section 11. The reflective section 131 is formed, for example, by attaching a sheet capable of reflecting light waves (reflective sheet) to a plate-shaped member. As shown in Figure 3, a cross-shaped mark is provided on the surface of the reflective section 131. In the following explanation, the intersection of the cross will be referred to as the "center of the reflective section 131".

[0080] The support portion 132 supports the reflective portion 131 so that its orientation can be changed. The support portion 132 is formed so that the reflective portion 131 can rotate around a first rotation axis 132a that is oriented in the vertical direction. The support portion 132 is also formed so that the reflective portion 131 can rotate around a second rotation axis 132b that is oriented in the horizontal direction. The support portion 132 is provided at the center P in a plan view of the main body portion 110.

[0081] Specifically, the support portion 132 is positioned such that the first rotation axis 132a coincides with the planar center P of the main body portion 110 in a plan view (see Figure 5). Furthermore, the support portion 132 is positioned such that the first rotation axis 132a coincides with (overlaps with) the vertical lines of the cross shape of the reflective portion 131 in a plan view, and the second rotation axis 132b coincides with the horizontal lines of the cross shape of the reflective portion 131 in a side view. As a result, even when the reflective portion 131 is rotated around the first rotation axis 132a and the second rotation axis 132b, the center of the reflective portion 131 is formed to coincide with the planar center P of the main body portion 110 in a plan view.

[0082] The spirit level 140 shown in Figure 5 is used to check the inclination (horizontal state) of the main body 110 (target part 130). The spirit level 140 is provided on the upper surface of the main body 110. In this embodiment, the spirit level 140 is provided in front of the height adjustment bolt hole 112b in the second part 112. The spirit level 140 is substantially circular in shape when viewed from above. In this embodiment, an example is shown in which the spirit level 140 is a bubble level in which liquid and bubbles are sealed inside a container. However, the spirit level 140 is not limited to this form, and various spirit levels such as digital or laser types can be used.

[0083] Next, the procedure for inspecting the position of the anchor bolts 4 (anchor bolt set 3) using the measurement system 1 described above will be explained. In this embodiment, the position of the anchor frame 5, and consequently the position of each anchor bolt 4, is inspected by measuring the position of the target portion 130 of the jig 100 installed on the anchor frame 5 using the measuring instrument 10.

[0084] The position of the anchor bolts 4 is measured with the anchor bolt set 3 placed inside the formwork 6, as shown in Figure 1, and before the concrete is poured. As shown in Figure 7, the measurement of the position of the anchor bolts 4 involves the following steps in order: data input (step S10), reference point measurement (step S20), target measurement (step S30), and measurement result output (step S40).

[0085] Data input (step S10) is a procedure for inputting data to be used to measure the position of the anchor bolts 4 into the control device 20 as preparation for measurement. The data input in step S10 includes drawing data (CAD file) of the foundation 2 showing the design installation position (design position) of the anchor bolts 4, an image file of the drawing used to output the measurement results, and a list of coordinates of the anchor frame 5 to be measured (coordinate list file). Note that the data to be input in step S10 is not limited to those mentioned above, and various data can be used as needed.

[0086] The data described above is input using the input unit 24. The operator uses the control device 20 to register the coordinate origin in the drawing data, the coordinates of the center of the anchor frame 5 in plan view, etc. The operator also registers the coordinates of the reference point (the position where the reference point prism 30 is installed) in the drawing data.

[0087] The operator inputs the data entered into the control device 20 into the measuring instrument 10. This data can be entered via wireless communication such as Bluetooth (registered trademark) or via a suitable cable.

[0088] The reference point measurement (step S20) is a procedure for having the measuring instrument 10 acquire the position of the reference points using the reference point prisms 30, each of which is placed at two reference points at the construction site. When performing reference point measurement, the measurer sets up the measuring instrument 10 at any position at the construction site.

[0089] In the reference point measurement, the measurer operates using the input unit to irradiate each reference point prism 30 with light waves from the measurement unit 11, causing the control unit 15 to acquire distance data to each reference point. The control unit 15 then acquires position (coordinate) data for each reference point prism 30 based on the distance data to each reference point.

[0090] Furthermore, the control unit 15 determines whether there is an error between each coordinate based on the coordinate data of each reference point prism 30 acquired by measurement and the coordinates of the registered reference points in the drawing data. If such an error is found, the control unit 15 can display this fact on the display unit 25.

[0091] Target measurement (step S30) is a procedure for measuring the position of the target portion 130 of the jig 100 installed on the anchor frame 5. Target measurement is performed with the jig 100 installed on the anchor frame 5 to be measured. The installation of the jig 100 is performed by a person (worker) different from the person operating the measuring instrument 10.

[0092] The following describes how to install the jig 100 onto the anchor frame 5.

[0093] First, as shown in Figures 3 and 4, the worker places the jig 100 on the upper surface of the anchor frame 5. At this time, the worker aligns the planar center P of the main body 110 with the planar center of the anchor frame 5, using the marked portion 5a of the anchor frame 5 as a reference.

[0094] Specifically, as shown in Figure 4, the worker aligns the rear surface of the first part 111 with the vertices of the markings 5a on both the left and right sides of the anchor frame 5, and aligns the left surface of the second part 112 with the vertex of the markings 5a on the rear side of the anchor frame 5. As a result, the planar center P of the main body 110 and the planar center of the anchor frame 5 coincide in plan view.

[0095] Next, the worker slides each sliding part 120 so that its outer part 121b contacts the outer edge of the anchor frame 5, and then screws in the fastening bolt 122 to fix each sliding part 120 in place (see Figures 6(a) and (b)). This allows the jig 100 to be positioned relative to the anchor frame 5, as shown in Figures 3 and 4. Furthermore, it is possible to prevent the jig 100 installed on the anchor frame 5 from shifting position.

[0096] Here, as shown in Figure 4, the outer portion 121b is formed such that, with the rear surface of the first portion 111 or the left surface of the second portion 112 aligned with the apex of the scribing portion 5a, both ends of the outer portion 121b in the width direction are positioned wider than the scribing portion 5a. This prevents the jig 100 from shifting position by fitting the outer portion 121b into the scribing portion 5a.

[0097] Next, the worker adjusts the angle of the main body 110 (target section 130) relative to the anchor frame 5 so that the main body 110 is horizontal. Specifically, the worker adjusts the height position of each end of the main body 110 by operating the height adjustment bolts 123 of each sliding section 120 while checking the spirit level 140. This adjusts the angle of the main body 110 relative to the anchor frame 5 at three points.

[0098] Here, if the jig 100 and the anchor bolt 4 interfere with each other, making it impossible to align the planar center P of the main body 110 with the planar center of the anchor frame 5 in a plan view, the planar center P of the main body 110 may be offset in an arbitrary direction relative to the planar center of the anchor frame 5, and the jig 100 may be installed accordingly. In this case, measurements should be taken considering the direction and amount of the offset.

[0099] Furthermore, if the outer diameter of the anchor frame 5 is small and the lower end of the height adjustment bolt 123 cannot be brought into contact with the upper surface of the anchor frame 5 even when the sliding part 120 is moved to its maximum extent toward the center in the plan view, the height adjustment bolt holes 111b (112b) of the main body 110 may be used instead. That is, if the lower end of the height adjustment bolt 123 can be brought into contact with the anchor frame 5 when the height adjustment bolt 123 is fitted into the height adjustment bolt holes 111b (112b), the angle of the main body 110 relative to the anchor frame 5 can be adjusted by operating the height adjustment bolt 123 in this state.

[0100] By performing the above-described procedure, the jig 100 can be positioned relative to the anchor frame 5 such that the target portion 130 is centered in the plan view of the anchor frame 5 and the target portion 130 is horizontal. The operator can also orient the reflective portion 131 of the target portion 130 toward the measuring instrument 10 as needed.

[0101] In target measurement, the operator specifies the anchor frame 5 to be measured by performing operations using the input unit. The operator also uses the input unit to irradiate the target portion 130 of the jig 100 installed on the anchor frame 5 with light waves from the measurement unit 11, causing the control unit 15 to acquire angle and distance data to the target portion 130. Based on the angle and distance data to the target portion 130, the control unit 15 acquires the position (coordinates) of the target portion 130.

[0102] By performing the target measurement described above, the position of the target unit 130, and consequently the position (coordinates) of the center of the anchor frame 5 being measured in plan view, can be measured. Furthermore, the control unit 15 can determine whether there is an error (positional displacement) between each coordinate and calculate the amount of the positional displacement, based on the design coordinates of the anchor frame 5 registered in the drawing data and the measured coordinates of the anchor frame 5.

[0103] The control unit 15 can display the measurement results, including the position (coordinates) of the center of the anchor frame 5 in a plan view, whether or not there is a positional displacement, and the amount of the positional displacement, on the display unit 25. The control unit 15 can also display on the display unit 25 an indication that the measurement of the specified anchor frame 5 has been completed.

[0104] In target measurement, the measurer performs the above-described measurements on all anchor frames 5 of the target to be measured. Once the measurement of the position of one anchor frame 5 of the target to be measured is complete, the worker installs the jig 100 on the other anchor frames 5 of the target to be measured.

[0105] In the example described above, a worker other than the measurer installed the jig 100, but the invention is not limited to such an example. For example, the measurer may also install the jig 100. According to this embodiment, the position of the anchor frame 5 can be measured by one person.

[0106] The measurement result output (step S40) is a procedure for outputting the measurement results of the target measurement. The measurement result output is performed, for example, after the measurement of all target anchor frames 5 has been completed. The above measurement results are shown, for example, using images or tables of the foundation 2 drawing.

[0107] The above measurement results can be displayed on the display unit 25. In this case, the measurement result data may be transmitted from the measuring instrument 10 to the control device 20 and displayed on the display unit 25 of the control device 20. Alternatively, the results may be printed on paper using a printer connected to the control device 20.

[0108] It should be noted that the measurement content by the measurement system 1 according to this embodiment described above is just one example, and the measurement by the measurement system 1 is not limited to the content described above, and various modifications are possible.

[0109] For example, the above example shows that the control unit 15 of the measuring instrument 10 is used to determine whether or not there is a misalignment of the anchor frame 5 during target measurement (step S30) and to calculate the amount of misalignment. However, the method is not limited to the above. For example, the control unit 22 of the control device 20 may be used to perform the above processing.

[0110] By performing measurements using the measurement system 1 described above, the effort required to inspect the position of the anchor bolts 4 can be reduced. In other words, in typical measurements of the position of anchor bolts 4, it is assumed that a prism is installed for each of the multiple (four in this embodiment) anchor bolts 4, and the position is measured using measuring instruments, etc.

[0111] On the other hand, according to the measurement system 1 of this embodiment, the position of the center of the anchor frame 5 in a plan view can be measured using the measuring instrument 10 and a jig 100 that can position the target part 130 at the center of the anchor frame 5 in a plan view. By measuring the position of the center of the anchor frame 5 in a plan view, it is possible to determine the positions of the multiple anchor bolts 4 to which the anchor frame 5 is provided, as well as whether or not there is any misalignment of the multiple anchor bolts 4 and the amount of misalignment. In this way, by using the jig 100, the position of each anchor bolt 4 can be inspected in a single measurement for multiple (four) anchor bolts 4.

[0112] If the above measurements reveal any misalignment of the anchor frame 5, or consequently the anchor bolts 4, the worker will correct the position of the anchor bolts 4 as necessary.

[0113] Furthermore, the measurement system 1 can be used not only to inspect the position of the anchor bolts 4, but also to inspect the position of the foundation 2 after completion (after the concrete has hardened).

[0114] When inspecting the foundation 2 described above, the measuring prism 40 is placed on the object to be measured on the foundation 2, and the position of the object to be measured is measured by irradiating the measuring prism 40 with light waves from the measuring instrument 10. The four corners of the part of the foundation 2 where the steel columns are installed can be used as the object to be measured on the foundation 2.

[0115] Furthermore, the measurement system 1 can also be used to inspect the accuracy of the erection of steel columns fixed to the foundation 2. In this case, a suitable reflective sheet is attached to the steel column to be measured, and the position of the object is measured by irradiating the reflective sheet with light waves from the measuring instrument 10.

[0116] Furthermore, the measurement system 1 can also be used to inspect the grid lines drawn by marking out on the foundation 2 construction site (lean concrete, etc.) before the foundation 2 is constructed. In this case, a measuring prism 40 is placed on the grid line, and the grid line is inspected by irradiating the measuring prism 40 with light waves from the measuring instrument 10.

[0117] Each of the above inspections can be performed using a procedure that is generally the same as the one shown in Figure 7. In this process, the measurement targets for foundation 2, steel columns, and grid lines are registered during data entry (step S10).

[0118] Thus, the measurement system 1 according to this embodiment can use a common measuring instrument 10 to inspect the position of the anchor bolts 4 (anchor frame 5), the foundation 2, the steel columns, and the grid lines.

[0119] As described above, the jig 100 according to one embodiment of the present invention is An installation part (main body part 110) is installed on the anchor frame 5 that supports multiple anchor bolts 4 of the building's foundation 2, The aforementioned installation section (main body section 110) includes a target section 130 capable of reflecting light, The anchor frame 5 has a setting section (rear surface of the first part 111, left surface of the second part 112) that allows setting the target section 130 at an arbitrary measurement position (center in plan view) relative to the center in plan view, It is equipped with the following features.

[0120] This configuration reduces the effort required to inspect the position of the anchor frame 5. Specifically, by setting up the jig 100 so that the target portion 130 is positioned at the center of the anchor frame 5 in a plan view, and shining the light from the measuring instrument 10, which is capable of optical measurement, onto the target portion 130 of the jig 100, the position of the center of the anchor frame 5 in a plan view can be measured. This allows the positions of multiple anchor bolts 4 to be inspected in a single measurement, without having to inspect the positions of each of the multiple anchor bolts 4 individually.

[0121] Furthermore, the jig 100 is The device includes a mounting part (slide part 120) that allows the installation part (main body part 110) to be attached to the anchor frame 5 when the target part 130 is set to the measurement position.

[0122] This configuration makes it possible to suppress the displacement of the jig 100 relative to the anchor frame 5.

[0123] The aforementioned mounting portion (slide portion 120) is It is movably mounted relative to the installation portion (main body portion 110) and is attached to the anchor frame 5 by contacting the outer edge of the anchor frame 5.

[0124] This configuration allows for the positioning of the jig 100 relative to the anchor frame 5.

[0125] Furthermore, the jig 100 is The system is equipped with an adjustment part (height adjustment bolt 123) that allows adjustment of the angle of the target part 130 relative to the anchor frame 5.

[0126] This configuration improves the accuracy of measurements. Specifically, by providing an adjustment section (height adjustment bolt 123), the angle of the target section 130 relative to the anchor frame 5 can be adjusted so that the target section 130 is horizontal. This improves the accuracy of measurements.

[0127] Furthermore, the jig 100 is The device is equipped with a spirit level 140 that allows confirmation of the horizontal state of the target section 130.

[0128] This configuration improves the workability when adjusting the angle of the target portion 130 relative to the anchor frame 5.

[0129] Furthermore, the setting unit is, A first setting section (rear surface of the first part 111) that can set the position of the target section 130 in the first direction (front-rear direction), A second setting section (left side of the second part 112) is provided, which allows setting the position of the target section 130 in a second direction (left-right direction) perpendicular to the first direction, It is equipped with the following features.

[0130] This configuration makes it easier to position the target section 130 at the measurement position (the center of the anchor frame 5 in a plan view). Specifically, by aligning the first setting section (the rear surface of the first section 111) and the second setting section (the left surface of the second section 112) with arbitrary marks (marking section 5a) formed on one side of the anchor frame 5, the target section 130 can be positioned at the measurement position (the center of the anchor frame 5 in a plan view). In this way, by aligning the positions in two directions using the first setting section (the rear surface of the first section 111) and the second setting section (the left surface of the second section 112), the target section 130 can be easily positioned at the measurement position (the center of the anchor frame 5 in a plan view).

[0131] Furthermore, the measurement system 1 according to one embodiment of the present invention is A jig 100 that allows a light-reflecting target section 130 to be positioned at any measurement position relative to the center of the plan view of the anchor frame 5 that supports multiple anchor bolts 4 of the building's foundation 2, A measuring instrument 10 capable of measuring the position of the target portion 130 by irradiating the target portion 130 with light, A control device 20 capable of performing an inspection of the position of the anchor frame 5 based on the measurement results of the measuring instrument 10, It is equipped with the following features.

[0132] This configuration reduces the effort required to inspect the position of the anchor frame 5. Specifically, by setting up the jig so that the target part 130 is positioned at the measurement position (the center of the anchor frame 5 in plan view), and shining the light from the measuring instrument 10 onto the target part 130 of the jig 100, the position of the center of the anchor frame 5 in plan view can be measured, and the position of the anchor frame 5 can be inspected based on the measurement result. This makes it possible to inspect the positions of multiple anchor bolts 4 in a single measurement, without having to inspect the positions of each of the multiple anchor bolts 4 individually.

[0133] The main body 110 according to this embodiment is one form of the installation part according to the present invention. Furthermore, the height adjustment bolt 123 according to this embodiment is one form of the adjustment part according to the present invention. Furthermore, the slide portion 120 according to this embodiment is one form of the contact portion according to the present invention. Furthermore, the rear surface of the first part 111 according to this embodiment is one form of the first setting part according to the present invention. Furthermore, the left side of the second part 112 according to this embodiment is one form of the second setting part according to the present invention.

[0134] Although embodiments of the present invention have been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention as described in the claims.

[0135] For example, in this embodiment, an example is shown in which sliding portions 120 are provided on both ends of the first portion 111, but the embodiment is not limited to this configuration. For example, the sliding portion 120 may be provided on only one end of the first portion 111.

[0136] Furthermore, although this embodiment shows an example in which a sliding part 120 is provided on the main body 110, the invention is not limited to this configuration. For example, the sliding part 120 may be omitted. In this case, height adjustment bolts 123 may be provided in bolt holes (height adjustment bolt holes 111b, 112b, etc.) provided at appropriate positions on the main body 110.

[0137] Furthermore, in this embodiment, an example was shown in which the main body 110 and the target portion 130 are aligned with the anchor frame 5 by moving the position of the entire main body 110, but the embodiment is not limited to this configuration. For example, the second portion 112 and the target portion 130 may be formed to be slidable in the left-right direction (the longitudinal direction of the first portion 111) relative to the first portion 111, and the alignment with the anchor frame 5 may be performed by moving the second portion 112 and the target portion 130.

[0138] Furthermore, although this embodiment shows an example in which the spirit level 140 is integrally provided on the main body 110, the invention is not limited to this configuration. For example, the spirit level 140 may be a separate component from the main body 110. In this case, the separate spirit level 140 may be mounted on top of the main body 110 for use.

[0139] Furthermore, although this embodiment shows an example in which a personal computer is used as the control device 20, the invention is not limited to this configuration. For example, a suitable smartphone, tablet, or other terminal may be used as the control device 20. [Explanation of symbols]

[0140] 1. Measurement System 10 Measuring Instruments 20 Control device 30 Prisms for reference points 100 jigs

Claims

1. A jig capable of positioning a light-reflecting target portion at any measurement position relative to the center of the plan view of an anchor frame supporting multiple anchor bolts of the foundation of a building, A measuring device capable of measuring the position of the target portion by irradiating the target portion with light, A control device capable of performing an inspection of the position of the anchor frame based on the measurement results of the aforementioned measuring instrument, A measurement system equipped with the following features.

2. The jig is Installation portion installed on the anchor frame, The target portion provided in the installation portion, A setting unit is provided that allows the target portion to be set at any measurement position relative to the center of the anchor frame in a plan view, Equipped with, The measurement system according to claim 1.

3. The jig is The mounting portion is provided so that the installation portion can be attached to the anchor frame when the target portion is set to the measurement position. The measurement system according to claim 2.

4. The mounting portion is It is movably mounted relative to the installation portion and is attached to the anchor frame by contacting the outer edge of the anchor frame. The measurement system according to claim 3.

5. The jig is It is equipped with an adjustment part that can adjust the angle of the target part with respect to the anchor frame, A measurement system according to any one of claims 1 to 4.

6. The jig is The system is equipped with a spirit level that can confirm the horizontal state of the target section. A measurement system according to any one of claims 1 to 5.

7. The setting unit is, A first setting unit capable of setting the position of the target portion in the first direction, A second setting unit capable of setting the position of the target portion in a second direction perpendicular to the first direction, Equipped with, The measurement system according to claim 2.

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