CN217900825U - Deformation monitoring device for construction site - Google Patents
Deformation monitoring device for construction site Download PDFInfo
- Publication number
- CN217900825U CN217900825U CN202221364348.5U CN202221364348U CN217900825U CN 217900825 U CN217900825 U CN 217900825U CN 202221364348 U CN202221364348 U CN 202221364348U CN 217900825 U CN217900825 U CN 217900825U
- Authority
- CN
- China
- Prior art keywords
- strain gauge
- transverse
- longitudinal
- connecting piece
- reference frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a building site is with deformation monitoring devices, including measurement station mounting bracket and 3 at least strainometers, strainometer one end is connected with the measurement station mounting bracket, and the other end is connected with the stress benchmark frame, the measurement station mounting bracket includes vertical connecting piece, transverse connection spare and longitudinal tie spare, transverse connection spare links firmly with the measurement station mounting bracket respectively through the one end of longitudinal tie spare, the one end of longitudinal tie spare through the transverse tie spare. The device converts the deformation in the horizontal direction to the strain gauge which is obliquely arranged by arranging the transverse and longitudinal support rods, thereby realizing the strain measurement of a measured point in three directions based on one stress reference point and facilitating the engineering construction and the operation maintenance.
Description
Technical Field
The utility model relates to a building deformation monitoring technology field, concretely relates to building site is with deformation monitoring devices.
Background
The special buildings with higher requirements on deformation control, especially the key hydraulic engineering dam, need to be subjected to long-term deformation monitoring. Currently, deformation monitoring is generally performed by using strain sensors such as embedded steel bar meters or strain gauges.
Generally, it is comparatively suitable to select the dam bottom as stress datum point, consequently, vertical strain measurement is carried out more easily to this kind of pre-buried strain sensor, and the horizontal and longitudinal strain simultaneous measurement design of horizontal plane is comparatively difficult, generally need select 2 above stress datum points far away, wastes time and energy, and the construction degree of difficulty is great, the cost is higher.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a deformation monitoring device is used in building site utilizes single stress datum point can realize being surveyed three direction deformation volume of station and measures to the long-term deformation monitoring of special buildings such as dam of realization that can be very convenient.
In order to realize the above object, the technical scheme of the utility model a deformation monitoring device is used in building site is provided, including measurement station mounting bracket and 3 at least strainometers, strainometer one end is connected with the measurement station mounting bracket, and the other end is connected with stress reference frame, the measurement station mounting bracket includes vertical connecting piece, transverse connection spare and longitudinal tie spare, vertical connecting piece, transverse connection spare and longitudinal tie spare's one end links firmly with the measurement station mounting bracket. The transverse connecting piece is fixedly connected with the measuring point mounting frame through one end of the transverse supporting rod and one end of the longitudinal connecting piece through the longitudinal supporting rod respectively; the measuring point mounting rack is generally arranged at the measured point on a measured building, the stress datum rack is arranged at a datum point, and the datum point is generally selected at the bottom of the measured building or on a corresponding foundation.
Furthermore, one end of the vertical connecting piece is provided with any one of a vertical connecting ring, a vertical connecting buckle and a vertical connecting nail; the transverse connecting piece comprises any one of a transverse connecting ring, a transverse connecting buckle and a transverse connecting nail which are positioned at one end of the transverse supporting rod, and the transverse supporting rod is fixedly connected to the measuring point mounting rack; the longitudinal connecting piece comprises any one of a longitudinal connecting ring, a longitudinal connecting buckle and a longitudinal connecting nail which are positioned at one end of the longitudinal supporting rod, and the longitudinal supporting rod is fixedly connected to the measuring point mounting rack; the connecting ring, the connecting buckle and the connecting nail are mainly used for connecting one end of the strain gauge, and can also be any other component capable of connecting the strain gauge to the measuring point mounting rack; horizontal bracing piece and vertical support pole generally all include oblique support piece, ensure two bracing pieces after the downward atress with vertical connecting piece between indeformable.
Furthermore, the vertical connecting piece is positioned at the bottom end of the measuring point mounting rack and is connected with the transverse connecting piece and the longitudinal connecting piece in a three-dimensional right angle mode, namely the vertical connecting piece, the transverse connecting piece and the longitudinal connecting piece point to three directions which are perpendicular to each other respectively; the three connecting pieces can also be connected at any non-zero angle, and the method is feasible in principle, but the intermediate calculation is more complex, the measurement error is larger, and the method is not recommended.
Furthermore, the measuring point mounting frame comprises a fixed support fixedly connected with the measuring point mounting frame, the fixed support comprises any one of a one-way support, a two-way support, a triangular support, a square support and a round support, and can also be a support in any other shape, and the fixed support is generally positioned on the upper parts of the vertical connecting piece, the transverse connecting piece and the longitudinal connecting piece, is mainly used for fixing the measuring point mounting frame on a measured point position, and is convenient for installation and maintenance of the strain gauge; the fixed support and the building can be fixedly connected by bolts or other fixed connection modes, but most of the fixed support and the building are directly embedded in reinforced concrete of a measured point.
Further, the strain gauges include a first strain gauge, a second strain gauge and a third strain gauge; one end of the first strain gauge is connected with the vertical connecting piece, one end of the second strain gauge is connected with the transverse connecting piece, and one end of the third strain gauge is connected with the longitudinal connecting piece; the strain gauge comprises any one of a steel bar gauge and a fiber grating strain gauge, and can also be other sensors capable of measuring deformation, strain force or displacement; the strain gauge comprises a strain sensor and a strain sensor connector, wherein the strain sensor connector comprises a steel bar, a steel wire rope or other members which can connect and install the strain sensor between a measured point and a stress reference point.
Furthermore, the stress reference frame comprises a fixing piece and at least one connecting piece, the connecting piece comprises any one of a reference frame connecting ring, a connecting buckle and a connecting nail, the other end of the strain gauge is connected with the stress reference frame connecting piece, the fixing piece and the fixing support of the measuring point mounting frame have the same function and the same configuration, and the stress reference frame connecting piece is fixedly connected with the reference point reinforced concrete or is directly embedded into the ground by using rivets or anchor piles.
The utility model has the advantages and the beneficial effects that: the deformation monitoring device for the construction site can realize strain measurement of a measured point in three directions based on one stress datum point, and can be used for monitoring deformation of construction site buildings, particularly river dams for a long time, so that the problems that at least 3 datum points are required to be arranged when one point is monitored by a traditional method, the strain gauge is large in laying construction range, large in construction difficulty, difficult to maintain and the like are solved, and engineering construction and operation maintenance are facilitated.
Drawings
FIG. 1 is a schematic structural view of a deformation monitoring device for a construction site-a circular fixing bracket and a datum point single connecting piece;
FIG. 2 is a schematic structural diagram of a deformation monitoring device for a construction site, namely a triangular fixing support and a datum point three-connecting piece;
the figures are labeled as follows:
the device comprises a measuring point mounting frame 1, a strain gauge 2 and a stress reference frame 3;
the device comprises a vertical connecting piece 11, a transverse connecting piece 12, a longitudinal connecting piece 13 and a fixed bracket 14;
a vertical connecting ring 111, a transverse connecting ring 121, a transverse supporting rod 122, a longitudinal connecting ring 131 and a longitudinal supporting rod 132;
a first strain gauge 21, a second strain gauge 22, and a third strain gauge 23.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1: construction site deformation monitoring device structure schematic diagram-circular fixed support and datum point single connecting piece
As shown in figure 1, the deformation monitoring device for the construction site comprises a measuring point mounting frame 1 and at least 3 strain gauges 2, one ends of the strain gauges are connected with the measuring point mounting frame, the other ends of the strain gauges are connected with a stress reference frame 3, the measuring point mounting frame comprises vertical connecting pieces 11, transverse connecting pieces 12 and longitudinal connecting pieces 13, and one ends of the vertical connecting pieces, the transverse connecting pieces and the longitudinal connecting pieces are fixedly connected with the measuring point mounting frame. One end of the transverse connecting piece, which passes through the transverse supporting rod 122, and one end of the longitudinal connecting piece, which passes through the longitudinal supporting rod 132, are fixedly connected with the measuring point mounting rack respectively; the measuring point mounting rack is generally arranged at a measured point on a measured building, the stress reference rack is arranged at a reference point, and the reference point is generally selected on the bottom of the measured building or a corresponding foundation.
Preferably, one end of the vertical connecting piece is provided with any one of a vertical connecting ring 15, a vertical connecting buckle and a vertical connecting nail; the transverse connecting piece comprises any one of a transverse connecting ring 121, a transverse connecting buckle and a transverse connecting nail which are positioned at one end of a transverse supporting rod 122, and the transverse supporting rod is fixedly connected to the measuring point mounting rack; the longitudinal connecting piece comprises any one of a longitudinal connecting ring 131, a longitudinal connecting buckle and a longitudinal connecting nail which are positioned at one end of a longitudinal supporting rod 132, and the longitudinal supporting rod is fixedly connected to the measuring point mounting rack; the connecting ring, the connecting buckle and the connecting nail are mainly used for connecting one end of the strain gauge, and can also be any other component capable of connecting the strain gauge to the measuring point mounting rack, and the connecting ring is shown in the figure in the embodiment; the transverse supporting rods and the vertical supporting rods generally comprise oblique supporting pieces, so that the two supporting rods are prevented from deforming with the vertical connecting pieces after being stressed downwards; from principle analysis, the vertical strain measurement accuracy directly depends on the strain gauge accuracy, the horizontal and longitudinal strain measurement is influenced by the vertical heights of a measured point and a reference point and the length of a supporting rod besides the strain gauge accuracy, the smaller the vertical height is, the longer the supporting rod is, the more the supporting rod is, the better the horizontal and longitudinal strain measurement accuracy is, but the vertical height is generally not too small, the too long supporting rod can bring construction difficulty, on the other hand, the high measurement sensitivity of the strain gauge can reduce the requirement on the length of the supporting rod, and generally the horizontal supporting rod and the longitudinal supporting rod are not shorter than 10cm.
Preferably, the vertical connecting piece is positioned at the bottom end of the measuring point mounting rack and is connected with the transverse connecting piece and the longitudinal connecting piece in a three-dimensional right angle mode, namely the vertical connecting piece, the transverse connecting piece and the longitudinal connecting piece point to three directions which are perpendicular to each other respectively; the three connecting pieces can also be connected at any non-zero angle, and the method is feasible in principle, but the intermediate calculation is more complex, the measurement error is larger, and the method is not recommended to be adopted.
Preferably, the measuring point mounting rack comprises a fixed support 14 fixedly connected with the measuring point mounting rack, the fixed support comprises any one of a one-way support, a two-way support, a triangular support, a square support and a circular support, and can also be a support in any other shape, and the fixed support is generally positioned on the upper parts of the vertical connecting piece, the transverse connecting piece and the longitudinal connecting piece, is mainly used for fixing the measuring point mounting rack on a measured point, and is convenient for installation and maintenance of a strain gauge; the fixed support and the building can be fixedly connected by bolts or other fixed connection modes, but the fixed support and the building are mostly directly embedded in reinforced concrete at a measured point; if the embedded mode is adopted, sleeves are generally additionally arranged on the vertical connecting piece, the transverse connecting piece and the longitudinal connecting piece, and the sleeves are embedded on a path where the strain gauge passes through to protect the strain gauge and facilitate maintenance. The embodiment illustrates that the fixing bracket is a circular bracket.
Preferably, the strain gauges include a first strain gauge 21, a second strain gauge 22 and a third strain gauge 23; one end of the first strain gauge is connected with the vertical connecting piece, one end of the second strain gauge is connected with the transverse connecting piece, and one end of the third strain gauge is connected with the longitudinal connecting piece; the strain gauge comprises any one of a steel bar gauge and a fiber grating strain gauge, and can also be other sensors capable of measuring deformation, strain or displacement, and the three-dimensional deformation, strain or displacement of a measured point can be obtained according to the strain measurement value of each strain gauge and the geometric configuration after actual installation, so that the deformation, strain or displacement has the same essential significance; the strain gauge comprises a strain sensor and a strain sensor connector, wherein the strain sensor connector comprises a steel bar, a steel wire rope or other members which can connect and install the strain sensor between a measured point and a stress reference point.
Preferably, the stress reference frame comprises a fixing piece 31 and at least one connecting piece 32, the connecting piece comprises any one of a reference frame connecting ring, a connecting buckle and a connecting nail, the other end of the strain gauge is connected with the stress reference frame connecting piece, the fixing piece and a fixing support of the measuring point mounting frame have the same function and the same configuration, and the fixing piece is fixedly connected with reference point reinforced concrete or is directly embedded into the ground by using a rivet or an anchor pile; the reference frame can adopt the same configuration as the mounting frame of the measured point, and is provided with vertical, transverse and longitudinal three-way connecting pieces, but the length of the supporting rod is less than that of the supporting rod of the mounting frame of the measured point, 3 strain gauges can be respectively connected with the corresponding vertical, transverse and longitudinal connecting pieces, and the adoption of the mode is not generally recommended from the perspective of convenient implementation and accuracy improvement; the utility model discloses recommend only to set up a sharing connecting piece, on the sharing connecting piece of stress benchmark frame is connected to the other end of first strainometer, second strainometer and third strainometer.
As shown in FIG. 1, the fixing bracket of the measuring point mounting rack of the embodiment is circular, the stress reference rack is provided with a common connecting ring, and the fixing piece of the stress reference rack is triangular.
Example 2: construction site deformation monitoring device structure schematic diagram-bidirectional fixing support and datum point circular fixing piece
As shown in fig. 2, according to embodiment 1, the difference from embodiment 1 is that the fixing bracket of the mounting bracket is a bidirectional fixing bracket, and the fixing member of the stress reference bracket is circular.
The utility model discloses a theory of operation is: the device is convenient for engineering construction and operation maintenance, but generally requires the strain gauge to have higher measurement precision, and can preferentially select the optical fiber Bragg grating strain gauge.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, including the fixing support, the supporting rod, the connecting piece of the measuring point mounting rack, and the fixing piece and the connecting piece of the stress reference rack, and these improvements and modifications should also be considered as the protection scope of the present invention when they do not change their essential functions.
Claims (10)
1. The deformation monitoring device for the construction site is characterized by comprising a measuring point mounting frame (1) and at least 3 strain gauges (2), wherein one ends of the strain gauges are connected with the measuring point mounting frame, the other ends of the strain gauges are connected with a stress reference frame (3), the measuring point mounting frame comprises vertical connecting pieces (11), transverse connecting pieces (12) and longitudinal connecting pieces (13), and one ends of the vertical connecting pieces, the transverse connecting pieces and the longitudinal connecting pieces are fixedly connected with the measuring point mounting frame.
2. The deformation monitoring device for the construction site according to claim 1, wherein one end of the vertical connecting piece is provided with any one of a vertical connecting ring (15), a vertical connecting buckle and a vertical connecting nail; the transverse connecting piece comprises any one of a transverse connecting ring (121), a transverse connecting buckle and a transverse connecting nail which are positioned at one end of a transverse supporting rod (122), and the transverse supporting rod is fixedly connected to the measuring point mounting rack; the longitudinal connecting piece comprises any one of a longitudinal connecting ring (131), a longitudinal connecting buckle and a longitudinal connecting nail which are positioned at one end of a longitudinal supporting rod (132), and the longitudinal supporting rod is fixedly connected with the measuring point mounting rack.
3. The deformation monitoring device for the construction site as claimed in claim 2, wherein the vertical connecting piece is positioned at the bottom end of the measuring point mounting frame and is connected with the transverse connecting piece and the longitudinal connecting piece in a three-dimensional right angle mode.
4. The deformation monitoring device for the construction site is characterized in that the measuring point mounting rack comprises a fixed support (14) fixedly connected with the measuring point mounting rack, and the fixed support comprises any one of a one-way support, a two-way support, a triangular support, a square support and a round support.
5. A deformation monitoring device for a work site according to any one of claims 1-3, characterised in that the strain gauges comprise a first strain gauge (21), a second strain gauge (22) and a third strain gauge (23); one end of the first strain gauge is connected with the vertical connecting piece, one end of the second strain gauge is connected with the transverse connecting piece, and one end of the third strain gauge is connected with the longitudinal connecting piece; the strain gauge comprises any one of a steel bar gauge and a fiber grating strain gauge.
6. A deformation monitoring device for a work site according to claim 4, characterized in that the strain gauges comprise a first strain gauge (21), a second strain gauge (22) and a third strain gauge (23); one end of the first strain gauge is connected with the vertical connecting piece, one end of the second strain gauge is connected with the transverse connecting piece, and one end of the third strain gauge is connected with the longitudinal connecting piece; the strain gauge comprises any one of a steel bar gauge and a fiber grating strain gauge.
7. A deformation monitoring device for a construction site according to any one of claims 1-3, characterized in that the stress reference frame comprises a fixing member (31) and at least one connecting member (32), the connecting member comprises any one of a connecting ring of the reference frame, a connecting buckle and a connecting nail, and the other end of the strain gauge is connected with the stress reference frame connecting member.
8. The deformation monitoring device for the construction site as claimed in claim 4, wherein the stress reference frame comprises a fixing member and at least one connecting member, the connecting member comprises any one of a connecting ring, a connecting buckle and a connecting nail of the reference frame, and the other end of the strain gauge is connected with the stress reference frame connecting member.
9. The deformation monitoring device for the construction site according to claim 5, wherein the stress reference frame comprises a fixing member and at least one connecting member, the connecting member comprises any one of a reference frame connecting ring, a connecting buckle and a connecting nail, and the other end of the strain gauge is connected with the stress reference frame connecting member.
10. The deformation monitoring device for the construction site as claimed in claim 6, wherein the stress reference frame comprises a fixing member and at least one connecting member, the connecting member comprises any one of a connecting ring, a connecting buckle and a connecting nail of the reference frame, and the other end of the strain gauge is connected with the stress reference frame connecting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221364348.5U CN217900825U (en) | 2022-06-01 | 2022-06-01 | Deformation monitoring device for construction site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221364348.5U CN217900825U (en) | 2022-06-01 | 2022-06-01 | Deformation monitoring device for construction site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217900825U true CN217900825U (en) | 2022-11-25 |
Family
ID=84113110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221364348.5U Active CN217900825U (en) | 2022-06-01 | 2022-06-01 | Deformation monitoring device for construction site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217900825U (en) |
-
2022
- 2022-06-01 CN CN202221364348.5U patent/CN217900825U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206512764U (en) | A kind of horizontally loading test system for applying vertical load in stake top | |
| CN101865739B (en) | Pre-tightening force dynamic monitoring system for pre-stressed anchor bar strengthening project | |
| CN102051858B (en) | Jack loading triangular truss hanging basket and load test construction method thereof | |
| CN109505317B (en) | Compression resistance, resistance to plucking and horizontal static load test equipment of high stake | |
| CN103278384B (en) | Testing device and measuring method for anchorage performance of coal and rock mass in coal mine tunnel | |
| CN111535374B (en) | Pile foundation torsion resistance, tension torsion resistance and compression torsion resistance detection system and method | |
| CN103499268A (en) | Space relative deformation measuring device for upper disc and lower disc of in-situ rock joint plane | |
| CN104328810A (en) | Improved method for detecting bearing capacity of precast pipe-pile single-pile foundation | |
| CN103215975A (en) | Inbuilt method for distributed type sensing cable in foundation pile | |
| CN103758161B (en) | Pressure testing device and the pressure-measuring method of pile for prestressed pipe is measured with periphery pile tube component | |
| CN203310698U (en) | Coal mine tunnel coal-rock mass anchoring performance testing device | |
| CN217900825U (en) | Deformation monitoring device for construction site | |
| CN105423880B (en) | A kind of method for hanging main push-towing rope measurement deflection of bridge span | |
| CN107014670B (en) | Testing device for multi-directional horizontal bearing capacity of single pile under composite load | |
| CN212129160U (en) | Oblique-pulling foundation pit supporting structure for pile top | |
| CN201826335U (en) | Pre-tightening force dynamic monitor system of prestressed anchor bolt reinforcement engineering | |
| CN204575459U (en) | A kind of flexural member Mechanics Performance Testing device | |
| CN203782761U (en) | Pressure testing device using peripheral tubular pile component force to test prestress tubular pile | |
| CN205655948U (en) | Contrast tunnel dynamometry lock foot anchor pipe test performance's device | |
| CN109440844A (en) | A kind of static test settlement observer for exempting from datum line beam | |
| CN211523241U (en) | Regional integrated monitoring device suitable for slope stability control | |
| CN213418410U (en) | Tall and big space fastener type full scaffold monitoring structure | |
| CN201096572Y (en) | Prestressed cable tension tester | |
| CN211037082U (en) | Uplift pile stress and strain automatic monitoring device based on optical fiber sensing technology | |
| CN203515626U (en) | Anchor rod used for detecting anchor rod axial force and bending moment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |