CN218211701U - Concrete multidirectional strain monitoring device - Google Patents
Concrete multidirectional strain monitoring device Download PDFInfo
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- CN218211701U CN218211701U CN202222211066.8U CN202222211066U CN218211701U CN 218211701 U CN218211701 U CN 218211701U CN 202222211066 U CN202222211066 U CN 202222211066U CN 218211701 U CN218211701 U CN 218211701U
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Abstract
The utility model discloses a concrete multidirectional strain monitoring device, which comprises a steel pipe main frame, an X-direction monitoring unit, a Y-direction monitoring unit, a Z-direction monitoring unit and a spatial direction monitoring unit; the steel pipe main frame is vertically arranged, and the X-direction monitoring unit and the Y-direction monitoring unit are vertically arranged on the steel pipe main frame; the X-direction monitoring unit and the Y-direction monitoring unit are positioned on the same horizontal plane, and the included angle between the X-direction monitoring unit and the Y-direction monitoring unit is 90 degrees; the spatial direction monitoring unit is obliquely arranged on the steel pipe main frame, and the included angle between the axis of the spatial direction monitoring unit and the axis of the steel pipe main frame is 45 degrees; the Z-direction monitoring unit is arranged on the steel pipe main frame, and the axis of the Z-direction monitoring unit is parallel to the axis of the steel pipe main frame; the utility model discloses the realization is gathered the measurement to meeting an emergency of concrete structure's X axle, Y axle, Z axle and 45 directions in space, only needs to fix the steel pipe body frame and buries underground, buries simple to operate underground, has ensured concrete structure data measurement result's that meets an emergency accuracy.
Description
Technical Field
The utility model belongs to the technical field of the concrete strain monitoring facilities, in particular to multidirectional strain monitoring devices of concrete.
Background
The concrete structure is deformed due to external load or volume change of the concrete structure from the self-casting molding to the use stage; among them, deformation cracks occurring on the surface or inside of the structure affect safety performance; when the crack develops a breakthrough, severe structural failure may occur. In order to measure the strain of the structure in real time in the construction stage and the use stage, a concrete strain gauge is generally used for monitoring the structure, the safety performance of the structure is mainly tested, and the stress performance of the structure can be monitored and analyzed.
At present, strain monitoring of concrete is mainly realized by an embedded strain gauge, is suitable for the fields of dams, bridges, tunnels and the like of large-volume concrete structures, and becomes the most widely applied measurement component at present; although the embedded strain gauge is widely applied, the embedding mode is always a key factor influencing the use effect of the embedded strain gauge.
In the prior art, a strain gauge is mostly bound on a structural steel bar; the method not only reduces the measurement precision, but also can only realize one-way strain measurement; strain gauges are required to be arranged in three spatial coordinate axis directions and a spatial 45-degree direction in a complete measurement mode; but the current embedding mode can not meet the required stress angle; meanwhile, for a part of plain concrete members without reinforcing steel bars inside, the strain gauges are difficult to fix and arrange, and the arrangement of the strain gauges needs to be carried out by means of auxiliary reinforcing steel bars, so that the operation is complicated, and the measurement result is adversely affected.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model provides a multidirectional monitoring devices that meets an emergency of concrete to solve the unable requirement that satisfies multidirectional stress monitoring of the fixed mode of current concrete internal strain meter, complex operation easily causes the technical problem of influence to measuring result.
In order to achieve the purpose, the utility model adopts the technical proposal that:
the utility model provides a concrete multidirectional strain monitoring device, which is used for collecting strain data in a concrete structure; the concrete multidirectional strain monitoring device comprises a steel pipe main frame, an X-direction monitoring unit, a Y-direction monitoring unit, a Z-direction monitoring unit and a space-direction monitoring unit;
the steel pipe main frame is vertically arranged, and the X-direction monitoring unit and the Y-direction monitoring unit are vertically arranged on the steel pipe main frame; the X-direction monitoring unit and the Y-direction monitoring unit are positioned on the same horizontal plane, and an included angle between the X-direction monitoring unit and the Y-direction monitoring unit is 90 degrees;
the spatial direction monitoring unit is obliquely arranged on the steel pipe main frame, and an included angle between the axis of the spatial direction monitoring unit and the axis of the steel pipe main frame is 45 degrees; the Z-direction monitoring unit is arranged on the steel pipe main frame, and the axis of the Z-direction monitoring unit is parallel to the axis of the steel pipe main frame;
the X-direction monitoring unit is used for acquiring strain data of the concrete structure in the X-axis direction; the Y-direction monitoring unit is used for acquiring strain data of the concrete structure in the Y-axis direction; the Z-direction monitoring unit is used for acquiring strain data of the concrete structure in the Z-axis direction; and the spatial direction monitoring unit is used for acquiring strain data of the concrete structure in a 45-degree direction in space.
Furthermore, the X-direction monitoring unit and the Y-direction monitoring unit have the same structure and adopt a first strain monitoring unit; the first strain monitoring unit comprises a first fixed support, a first strain gauge fixed frame, two first fixed claws and a first strain gauge;
the first fixed support is fixedly arranged on the steel pipe main frame, and the first strain gauge fixed frame is detachably fixed on the first fixed support; one side of the first fixed support is fixedly connected with the outer side surface of the steel pipe main frame, one end of the first strain gauge fixing frame is detachably fixed with the other side of the first fixed support, and the other end of the first strain gauge fixing frame horizontally extends towards one side far away from the steel pipe main frame;
two first fixing claws are arranged on the first strain gauge fixing frame in parallel at intervals, and the axes of the first fixing claws are perpendicular to the axis of the first strain gauge fixing frame; the first strain gauge is installed between the two first fixing claws, and the axis of the first strain gauge is parallel to the axis of the first strain gauge fixing frame.
Furthermore, the first fixed support comprises a first support bottom plate and a first support screw; one side of the first support base plate is fixedly welded on the outer side surface of the steel pipe main frame, the first end of the first support screw is fixedly welded with the other side of the first support base plate, and the second end of the first support screw is detachably fixed with the fixed end of the first strain gauge fixing frame;
the second end of the first support screw is provided with a first internal thread, the fixed end of the first strain gauge fixing frame is provided with a first external thread, and the first internal thread is connected with the first external thread in a matched mode.
Furthermore, the horizontal distance between the two first fixed claws is 100-200mm.
Further, the spatial direction monitoring unit adopts a second strain monitoring unit; the second strain monitoring unit comprises a second fixed support, a second strain gauge fixed frame, two second fixed claws and a second strain gauge;
the second fixing support is fixedly arranged on the steel pipe main frame, and the second strain gauge fixing frame is detachably fixed on the second fixing support; one side of the second fixing support is fixedly connected with the outer side surface of the steel pipe main frame, one end of the second strainometer fixing frame is detachably fixed with the other side of the second fixing support, and the other end of the second strainometer fixing frame extends upwards in an inclined mode towards one side far away from the steel pipe main frame;
two second fixed claws are arranged on the second strain gauge fixing frame in parallel at intervals, and the axis of each second fixed claw is perpendicular to the axis of the second strain gauge fixing frame; the second strain gauge is arranged between the two second fixing claws, and the axis of the second strain gauge is parallel to the axis of the second strain gauge fixing frame.
Furthermore, the second fixed support comprises a second support bottom plate and a second support screw; one side of the second support base plate is fixedly welded on the outer side surface of the steel pipe main frame, a first end of a second support screw is fixedly welded with the other end of the second support base plate, and a second end of the second support screw is detachably fixed with the fixed end of the second strain gauge fixing frame; the second end of the second support screw is obliquely and upwards arranged, and the included angle between the axis of the second support screw and the axis of the steel pipe main frame is 45 degrees;
and a second internal thread is arranged at the second end of the second support screw, a second external thread is arranged at the fixed end of the second strain gauge fixing frame, and the second internal thread is in fit connection with the second external thread.
Furthermore, the linear distance between the two second fixing claws is 100-200mm.
Furthermore, the Z-direction monitoring unit comprises two Z-direction brackets and a third strain gauge; the two Z-direction supports are horizontally fixed on the outer side surface of the steel pipe main frame; the two Z-direction supports are arranged at intervals up and down and are positioned in the same vertical plane; the third strain gauge is installed between the two Z-direction brackets, and the axis of the third strain gauge is parallel to the axis of the steel pipe main frame.
Furthermore, the vertical distance between the two Z-direction brackets is 100-200mm.
Further, the upper end of the steel pipe main frame is provided with a fixing external thread, and the lower end of the steel pipe main frame is provided with a fixing internal thread;
the fixed external thread or the fixed external thread is used for being connected with a steel pipe main frame in another concrete multidirectional strain monitoring device in a matched mode.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a multidirectional monitoring devices that meets an emergency of concrete, through set up X on the steel pipe body frame to monitoring unit, Y is to monitoring unit, Z is to monitoring unit and space to monitoring unit, realize respectively that the meeting an emergency of concrete structure's X axle direction, Y axle direction, Z axle direction and 45 directions in space gathers the measurement, device simple structure only needs fix the steel pipe body frame and buries underground, bury simple to operate underground, the accuracy of concrete structure data measurement result that meets an emergency has been ensured.
Further, a first strain gauge fixing frame is arranged on the steel pipe main frame in the X-direction monitoring unit and the Y-direction monitoring unit through a first fixing support; a second strain gauge fixing frame is arranged on the steel pipe main frame through a second fixing support in the spatial monitoring unit; and install first strainometer and second strainometer on first strainometer mount and second strainometer mount respectively, the operation degree of difficulty is little, and the installation effectiveness is high.
Furthermore, the third strain gauge is installed on the steel pipe main frame through the Z-direction support in the Z-direction monitoring unit, and the installation process is simple and high in efficiency.
Furthermore, through setting up fixed external screw thread and fixed internal thread respectively at the both ends of steel pipe body frame, realize two multidirectional strain monitoring devices's of concrete vertical connection, the assembling process is simple, and the steadiness is good.
Drawings
Fig. 1 is a schematic view of the overall structure of the concrete multidirectional strain monitoring device of the present invention;
fig. 2 is a schematic structural diagram of a first strain monitoring unit in the present invention.
The steel pipe strain monitoring device comprises a steel pipe main frame 1, a first strain monitoring unit 2 and a 3Z-direction support, wherein the steel pipe main frame is connected with a steel pipe main frame; 21 a first support base plate, 22 a first support screw, 23 a first strain gauge fixing frame, 24 a first fixing claw and 25 a first strain gauge.
Detailed Description
In order to make the technical problem solved by the present invention, technical solution and beneficial effect are more clearly understood, and the following specific embodiments are right for the present invention to proceed further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in the accompanying drawings 1-2, the utility model provides a concrete multidirectional strain monitoring device; the concrete multidirectional strain monitoring device is used for acquiring strain data in a concrete structure; the concrete multidirectional strain monitoring device comprises a steel pipe main frame 1, an X-direction monitoring unit, a Y-direction monitoring unit, a Z-direction monitoring unit and a space-direction monitoring unit; the X-direction monitoring unit is used for acquiring strain data of the concrete structure in the X-axis direction; the Y-direction monitoring unit is used for acquiring strain data of the concrete structure in the Y-axis direction; the Z-direction monitoring unit is used for acquiring strain data of the concrete structure in the Z-axis direction; and the spatial direction monitoring unit is used for acquiring strain data of the concrete structure in a 45-degree direction in space.
The steel pipe main frame 1 is a circular steel pipe, and the steel pipe main frame 1 is vertically arranged; the X-direction monitoring unit and the Y-direction monitoring unit are vertically arranged on the steel pipe main frame 1; the X-direction monitoring unit and the Y-direction monitoring unit are positioned on the same horizontal plane, and an included angle between the X-direction monitoring unit and the Y-direction monitoring unit is 90 degrees; the Z-direction monitoring unit is arranged on the steel pipe main frame 1, and the axis of the Z-direction monitoring unit is parallel to the axis of the steel pipe main frame 1; the space is obliquely arranged on the steel pipe main frame 1 towards the monitoring unit, and the included angle between the axis of the space towards the monitoring unit and the axis of the steel pipe main frame 1 is 45 degrees.
In the utility model, the X-direction monitoring unit and the Y-direction monitoring unit have the same structure and adopt the first strain monitoring unit 2; the second strain monitoring unit 2 comprises a first fixed support, a first strain gauge fixed frame 23, two first fixed claws 24 and a first strain gauge 25; the first fixing support includes a first support bottom plate 21 and a first support screw 22.
The first fixed support is fixedly arranged on the steel pipe main frame 1, and the first strain gauge fixed frame 23 is detachably fixed on the first fixed support; one side of the first fixed support is fixedly connected with the outer side surface of the steel pipe main frame 1, and one end of the first strain gauge fixed frame 23 is detachably fixed with the other side of the first fixed support; the other end of the first strain gauge fixing frame 23 horizontally extends to one side far away from the steel pipe main frame 1; specifically, one side of the first support base plate 21 is welded and fixed on the outer side surface of the steel pipe main frame 1, a first end of the first support screw 22 is welded and fixed with the other side of the first support base plate 21, and a second end of the first support screw 22 is detachably fixed with a fixed end of the first strain gauge fixing frame 23; the axis of the first support screw 22 is horizontally arranged, and a second end of the first support screw 22 is provided with a first internal thread; the axis of the first strain gauge fixing frame 23 is overlapped with the axis of the first support screw port 22, and a first external thread is arranged at the fixing end of the first strain gauge fixing frame 23; the first external thread is matched and connected with the first internal thread so as to fixedly install a first strain gauge fixing frame 23 in the first support screw port 22; the two first fixing claws 24 are arranged on the first strain gauge fixing frame 23 in parallel at intervals, the axes of the first fixing claws 24 are perpendicular to the axis of the first strain gauge fixing frame 23, and the two first fixing claws 24 are positioned in the same vertical plane; the first strain gauge 25 is horizontally arranged between the two first fixing claws 24, and the axis of the first strain gauge 25 is parallel to the axis of the first strain gauge fixing frame 23; preferably, the horizontal distance between the two first fixing claws 24 is 100-200mm; one end of the first strain gauge 25 is fixedly connected with one of the first fixing claws, and the other end of the first strain gauge 25 is fixedly connected with the other first fixing claw.
In the utility model, the space direction monitoring unit adopts a second strain monitoring unit; the second strain monitoring unit comprises a second fixed support, a second strain gauge fixed frame, two second fixed claws and a second strain gauge; the second fixed support comprises a second support bottom plate and a second support screw.
The second fixing support is fixedly arranged on the steel pipe main frame 1, and the second strain gauge fixing frame is detachably fixed on the second fixing support; one side of the second fixing support is fixedly connected with the outer side surface of the steel pipe main frame 1, one end of the second strainometer fixing frame is detachably fixed with the other side of the second fixing support, and the other end of the second strainometer fixing frame extends upwards in an inclined mode towards one side far away from the steel pipe main frame 1; specifically, one side of the second support base plate is welded and fixed on the outer side surface of the steel pipe main frame 1, a first end of a second support screw is welded and fixed with the other end of the second support base plate, and a second end of the second support screw is detachably fixed with the fixed end of the second strain gauge fixing frame; the second end of the second support screw is arranged obliquely upwards, the included angle between the axis of the second support screw and the axis of the steel pipe main frame 1 is 45 degrees, and the axis of the second strain fixing frame is superposed with the axis of the second support screw; a second internal thread is arranged at the second end of the second support screw, and a second external thread is arranged at the fixed end of the second strain gauge fixing frame; the second internal thread is in fit connection with the second external thread so as to fixedly install a second strain gauge fixing frame in the second support screw; two second fixed claws are arranged on the second strain gauge fixing frame in parallel at intervals, and the axis of the second fixed claws is perpendicular to the axis of the second strain gauge fixing frame; the second strain gauge is arranged between the two second fixed claws, and the axis of the second strain gauge is parallel to the axis of the second strain gauge fixed frame; preferably, the linear distance between the two second fixed claws is 100-200mm; one end of the second strain gauge is fixedly connected with one second fixing claw, and the other end of the second strain gauge is fixedly connected with the other second fixing claw.
In the utility model, the Z-direction monitoring unit comprises two Z-direction brackets 3 and a third strain gauge, and the two Z-direction brackets 3 are both horizontally fixed on the outer surface of the steel pipe main frame 1; the two Z-direction supports 3 are arranged at intervals up and down and are positioned in the same vertical plane; the third strain gauge is arranged between the two Z-direction brackets 3, and the axis of the third strain gauge is parallel to the axis of the steel pipe main frame 1; one end of the first strain gauge is fixedly connected with one Z-direction bracket, and the other end of the third strain gauge is fixedly connected with the other Z-direction bracket; preferably, the vertical spacing between the two Z-brackets 3 is 100-200mm.
In the utility model, the first strain gauge, the second strain gauge and the third strain gauge are all concrete strain gauges; the upper end of the steel pipe main frame 1 is provided with a fixing external thread, and the lower end of the steel pipe main frame 1 is provided with a fixing internal thread; and the fixed external thread or the fixed external thread is used for being matched and connected with a steel pipe main frame in another concrete multidirectional strain monitoring device.
The installation method comprises the following steps:
the concrete multidirectional strain monitoring device of the utility model processes all parts according to the design requirements; respectively welding and fixing the first fixed support, the second fixed support and the Z-direction bracket on the steel pipe main frame; fixing a first fixed claw on a first strain gauge fixing frame, and welding and fixing a second fixed claw on a second strain gauge fixing frame; when the steel pipe main frame is used, the steel pipe main frame is vertically embedded in a concrete structure to be poured, and then the first fixing support and the second fixing support are arranged on the steel pipe main frame; then, adjusting the position of the steel pipe main frame to ensure that the axis of a first strain gauge fixing frame in the X-direction monitoring unit is superposed with the X-axis direction of the concrete structure, and the axis of a first strain gauge fixing frame in the Y-direction monitoring unit is superposed with the Y-axis direction of the concrete structure; and finally, installing a first strain gauge between the two first fixed claws, installing a second strain gauge between the two second fixed claws, and installing a third strain gauge between the two Z-direction supports, so far, completing the installation of the concrete multidirectional strain monitoring device.
It should be noted that, since the structures of the Y-direction monitoring unit and the spatial-direction monitoring unit are similar to the structure of the X-direction monitoring unit, only the specific structure of the X-direction monitoring unit is shown in fig. 1; secondly, only the structure of a Z-direction bracket is shown in the Z-direction monitoring unit, and a third strain gauge between two Z-direction brackets is omitted; in addition, a rectangular coordinate system is established in the X-axis direction, the Y-axis direction and the Z-axis direction of the concrete structure by taking a certain preset position point in the concrete structure to be monitored as an origin; and taking the X-axis direction of the rectangular coordinate system as the X-axis direction of the concrete structure, taking the Y-axis direction of the rectangular coordinate system as the Y-axis direction of the concrete structure, and taking the Z-axis direction of the rectangular coordinate system as the Z-axis direction of the concrete structure.
The utility model discloses in, through set up X on the steel pipe body frame to monitoring unit, Y to monitoring unit, Z to monitoring unit and space to monitoring unit, realize respectively gathering the measurement to meeting an emergency of concrete structure's X axle direction, Y axle direction, Z axle direction and 45 orientations in space, satisfy the measurement of meeting an emergency to arbitrary position a plurality of orientations in the concrete structure.
The utility model discloses a concrete multidirectional strain monitoring device, which is characterized in that a fixed support is arranged on a steel pipe main frame, and a strain gauge fixing frame is fixedly connected with a support screw on the fixed support through threads; preferably, the length of the thread at the screw of the support is 50-100mm; the strain gauge is bound and fixed on a fixed claw of a strain gauge fixing frame, and the fixed claw is used as a fixed mounting point of the strain gauge; in addition, a Z-direction bracket is arranged on the steel pipe main frame, and the strain gauge is bound and fixed between the two Z-direction brackets; the installation and fixation of the strain gauge are realized so as to realize the strain measurement of the concrete structure; the end part of the steel pipe main frame is processed by threading to form a thread structure, so that the steel pipe main frame in different concrete multidirectional strain monitoring devices can be spliced.
In the utility model, the two ends of the steel pipe main frame are processed by threading, so that the threading of the steel pipe main frame can be realized; meanwhile, the steel pipe main frame is set to be 0.5m or 1m in fixed length; at a measuring point at a certain depth of the concrete structure, a steel pipe main frame with a strain gauge fixing frame is used, and other parts are connected by using common screw steel pipes; the device realizes the strain measurement at any depth position by the screw thread connection mode, and the steel pipe main frame is provided with support screw ports in different directions to realize the strain measurement in four spatial directions; when the device is used, only the strain gauge is bound on the fixed claw or the Z-direction support, and then all parts are assembled, so that secondary welding and other processes are not needed, concrete pouring and other processes can be carried out at any time, and the device is small in operation difficulty and high in installation efficiency.
The concrete multidirectional strain monitoring device can realize the simultaneous fixed measurement of the multidirectional strain gauges, and meet the strain measurement of any position in the concrete structure; the traditional method of using a steel reinforcement framework in the structure as a support is replaced, so that the measurement is limited; the device is also suitable for the interior of a plain concrete structure, is convenient to install, has higher operation efficiency, and has higher application value and economic effect.
The above embodiment is only one of the embodiments that can realize the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, and includes any changes, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention.
Claims (10)
1. The concrete multidirectional strain monitoring device is characterized by being used for acquiring strain data in a concrete structure; the concrete multidirectional strain monitoring device comprises a steel pipe main frame (1), an X-direction monitoring unit, a Y-direction monitoring unit, a Z-direction monitoring unit and a space-direction monitoring unit;
the steel pipe main frame (1) is vertically arranged, and the X-direction monitoring unit and the Y-direction monitoring unit are vertically arranged on the steel pipe main frame (1); the X-direction monitoring unit and the Y-direction monitoring unit are positioned on the same horizontal plane, and an included angle between the X-direction monitoring unit and the Y-direction monitoring unit is 90 degrees;
the spatial direction monitoring unit is obliquely arranged on the steel pipe main frame (1), and an included angle between the axis of the spatial direction monitoring unit and the axis of the steel pipe main frame (1) is 45 degrees; the Z-direction monitoring unit is arranged on the steel pipe main frame (1), and the axis of the Z-direction monitoring unit is parallel to the axis of the steel pipe main frame (1);
the X-direction monitoring unit is used for acquiring strain data of the concrete structure in the X-axis direction; the Y-direction monitoring unit is used for acquiring strain data of the concrete structure in the Y-axis direction; the Z-direction monitoring unit is used for acquiring strain data of the concrete structure in the Z-axis direction; and the spatial direction monitoring unit is used for acquiring strain data of the concrete structure in a 45-degree direction in space.
2. The concrete multidirectional strain monitoring device is characterized in that the X-direction monitoring unit and the Y-direction monitoring unit are identical in structure and adopt a first strain monitoring unit (2); the first strain monitoring unit (2) comprises a first fixed support, a first strain gauge fixed frame (23), two first fixed claws (24) and a first strain gauge (25);
the first fixed support is fixedly arranged on the steel pipe main frame (1), and the first strain gauge fixed frame (23) is detachably fixed on the first fixed support; one side of the first fixing support is fixedly connected with the outer side surface of the steel pipe main frame (1), one end of the first strain gauge fixing frame (23) is detachably fixed with the other side of the first fixing support, and the other end of the first strain gauge fixing frame (23) horizontally extends towards one side far away from the steel pipe main frame (1);
two first fixing claws (24) are arranged on the first strain gauge fixing frame (23) in parallel at intervals, and the axes of the first fixing claws (24) are perpendicular to the axis of the first strain gauge fixing frame (23); the first strain gauge (25) is installed between the two first fixing claws (24), and the axis of the first strain gauge (25) is parallel to the axis of the first strain gauge fixing frame (23).
3. The concrete multidirectional strain monitoring device of claim 2, wherein the first fixing support comprises a first support bottom plate (21) and a first support screw port (22); one side of the first support base plate (21) is fixedly welded on the outer side surface of the steel pipe main frame (1), the first end of the first support screw (22) is fixedly welded on the other side of the first support base plate (21), and the second end of the first support screw (22) is detachably fixed on the fixed end of the first strain gauge fixing frame (23);
the second end of the first support screw (22) is provided with a first internal thread, the fixed end of the first strain gauge fixing frame (23) is provided with a first external thread, and the first internal thread is connected with the first external thread in a matched mode.
4. A concrete multidirectional strain monitoring device according to claim 2, wherein the horizontal spacing between the two first fixing claws (24) is 100-200mm.
5. The concrete multidirectional strain monitoring device is characterized in that a second strain monitoring unit is adopted as the spatial strain monitoring unit; the second strain monitoring unit comprises a second fixed support, a second strain gauge fixed frame, two second fixed claws and a second strain gauge;
the second fixed support is fixedly arranged on the steel pipe main frame (1), and the second strainometer fixed frame is detachably fixed on the second fixed support; one side of the second fixing support is fixedly connected with the outer side surface of the steel pipe main frame (1), one end of the second strain gauge fixing frame is detachably fixed with the other side of the second fixing support, and the other end of the second strain gauge fixing frame extends upwards in an inclined mode towards one side far away from the steel pipe main frame (1);
two second fixed claws are arranged on the second strain gauge fixing frame in parallel at intervals, and the axis of the second fixed claws is perpendicular to the axis of the second strain gauge fixing frame; the second strain gauge is arranged between the two second fixing claws, and the axis of the second strain gauge is parallel to the axis of the second strain gauge fixing frame.
6. The concrete multidirectional strain monitoring device of claim 5, wherein the second fixing support comprises a second support bottom plate and a second support screw; one side of the second support base plate is fixedly welded on the outer side surface of the steel pipe main frame (1), a first end of a second support screw is fixedly welded with the other end of the second support base plate, and a second end of the second support screw is detachably fixed with the fixed end of the second strain gauge fixing frame; the second end of the second support screw is obliquely and upwards arranged, and the included angle between the axis of the second support screw and the axis of the steel pipe main frame (1) is 45 degrees;
and a second internal thread is arranged at the second end of the second support screw, a second external thread is arranged at the fixed end of the second strain gauge fixing frame, and the second internal thread is in fit connection with the second external thread.
7. The concrete multidirectional strain monitoring device of claim 5, wherein the linear distance between the two second fixing claws is 100-200mm.
8. The concrete multidirectional strain monitoring device is characterized in that the Z-direction monitoring unit comprises two Z-direction brackets (3) and a third strain gauge; the two Z-direction brackets (3) are horizontally fixed on the outer side surface of the steel pipe main frame (1); the two Z-direction supports (3) are arranged at intervals up and down and are positioned in the same vertical plane; the third strain gauge is installed between the two Z-direction brackets (3), and the axis of the third strain gauge is parallel to the axis of the steel pipe main frame (1).
9. A concrete multidirectional strain monitoring device according to claim 1, wherein the vertical spacing between two Z-brackets (3) is 100-200mm.
10. The concrete multidirectional strain monitoring device is characterized in that a fixing external thread is arranged at the upper end of the steel pipe main frame (1), and a fixing internal thread is arranged at the lower end of the steel pipe main frame (1);
and the fixed external thread or the fixed external thread is used for being matched and connected with a steel pipe main frame in another concrete multidirectional strain monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211066.8U CN218211701U (en) | 2022-08-22 | 2022-08-22 | Concrete multidirectional strain monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211066.8U CN218211701U (en) | 2022-08-22 | 2022-08-22 | Concrete multidirectional strain monitoring device |
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| Publication Number | Publication Date |
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| CN218211701U true CN218211701U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222211066.8U Active CN218211701U (en) | 2022-08-22 | 2022-08-22 | Concrete multidirectional strain monitoring device |
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2022
- 2022-08-22 CN CN202222211066.8U patent/CN218211701U/en active Active
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