CN212133640U - Measuring device for bridge - Google Patents
Measuring device for bridge Download PDFInfo
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- CN212133640U CN212133640U CN202020998884.5U CN202020998884U CN212133640U CN 212133640 U CN212133640 U CN 212133640U CN 202020998884 U CN202020998884 U CN 202020998884U CN 212133640 U CN212133640 U CN 212133640U
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Abstract
The utility model relates to a bridge periodic detection and maintenance technical field specifically relate to a measuring device for bridge. The measuring device comprises a horizontal mechanism and measuring rods (4) which are arranged in pairs, wherein the two measuring rods (4) in pairs are arranged in parallel, the bottom ends of the two measuring rods (4) are used for abutting against a bridge deck (1) of the bridge and an expansion joint (2) of the bridge respectively, the two measuring rods (4) are provided with reading parts for reading the relative height difference of the bottom ends of the two measuring rods (4), and the horizontal mechanism (5) is vertically arranged on one of the two measuring rods (4) and is arranged to be capable of adjusting the measuring rods (4) to extend in the vertical direction. This a measuring device for bridge is through setting up horizontal mechanism to adjust the measuring stick to vertical extension, be favorable to the difference in height between accurate measurement bridge expansion joint and the bridge floor, current set square method relatively has improved measuring result's precision, and is simple and easy, and it is convenient to measure.
Description
Technical Field
The utility model relates to a bridge periodic detection and maintenance technical field specifically relate to a measuring device for bridge.
Background
In the design of bridge structures, bridge expansion joints are commonly arranged between two beam ends of a bridge and between the beam ends and an abutment so as to adjust connection and displacement caused by physical properties of bridge building materials and vehicle load environmental characteristics. Because the bridge expansion joint is exposed in the natural environment for a long time and directly bears the repeated impact action of wheel load, and the impact action of increasingly more vehicles on the bridge expansion joint is also obviously increased, the defects of the bridge expansion joint are more and more, the height difference between the bridge expansion joint and the bridge floor is too large, the driving comfort of automobiles is influenced, the main structure of the bridge bears larger impact force, the bridge floor is jumped, and the structural safety of the bridge is influenced.
Currently, the standards for the quality inspection and assessment of road engineering JTG F80 specify: when the expansion joint is installed, the allowable height difference between the top surface of the expansion joint and the bridge deck is 2 mm; the city bridge maintenance technical standard CJJ99 specifies: the height difference of the joints between the protective belt of the expansion device and the bridge floor is not larger than 2mm for urban bridges maintained in types I and II, and not larger than 3mm for urban bridges maintained in types III to V. Therefore, the height difference detection of the bridge expansion joint and the bridge floor is one of the very important parameters in the regular detection and special detection process of the bridge.
Generally, the height difference between the bridge expansion joint and the bridge deck is mainly measured by two methods, namely leveling instrument measurement or triangular plate measurement. However, the leveling instrument measurement process is complex, the leveling instrument needs to be erected and leveled on the bridge floor, and an operator needs to erect the staff to and fro at two sides of the expansion joint to read the relative height difference, so that under the working condition that the vehicle cannot be completely closed to limit the vehicle passing, the error influence on the leveling instrument caused by the vehicle passing is large, and the vehicle passing brings certain potential safety hazard to the staff running ruler; the set-square method can use the difference in height of set-square and ruler direct reading expansion joint and bridge floor, and during the use, the minor face laminating expansion joint setting of ruler, the long limit setting of a right angle limit laminating ruler of set-square, another right angle limit laminating bridge floor setting, but another right angle limit that can't guarantee the set-square is in the level to it is great to receive the influence of bridge floor slope, causes the measuring result error very big.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a height difference between bridge expansion joint and the bridge floor in order to overcome prior art existence detects adopts the spirit level to measure and the operation that causes is complicated, the security is poor and adopt the set-square to measure the too low problem of accuracy that causes, provides a measuring device for bridge, this a measuring device for bridge is through setting up horizontal mechanism to guarantee that the measuring stick is in vertical setting all the time, thereby guaranteed measuring result's precision.
In order to achieve the above object, an aspect of the present invention provides a measuring device for a bridge, the measuring device includes a horizontal mechanism and a pair of measuring rods, two in pairs the measuring rods parallel arrangement and the bottom are used for supporting respectively the bridge deck of the bridge and the expansion joint of the bridge, two the measuring rods have a reading portion for reading two the relative height difference of the bottom ends of the measuring rods, the horizontal mechanism is vertically arranged in two one of the measuring rods and set up to be capable of adjusting the extension of the measuring rod along the vertical direction.
Optionally, the leveling mechanism is a level, a detection surface of the level is perpendicular to the length direction of the measuring rod, and the level is set to adjust the detection surface to a horizontal plane, so that the measuring rod extends in the vertical direction.
Optionally, the measuring device includes a connecting mechanism, and the connecting mechanism is respectively connected with the two measuring rods and is configured to enable the two measuring rods to relatively move in the length direction.
Optionally, the connecting mechanism includes two connecting members disposed in parallel and spaced apart from each other, and two ends of each connecting member are respectively hinged to the two measuring rods, so that the connecting members and the measuring rods together form a deformable parallelogram.
Optionally, the two measuring rods are respectively a first measuring rod and a second measuring rod, and the height of the hinge joint of the connecting member and the first measuring rod relative to the bottom end of the first measuring rod and the height of the hinge joint of the connecting member and the second measuring rod relative to the bottom end of the second measuring rod are kept consistent.
Optionally, the reading portion includes a scale line structure and a reading pointer, the scale line structure is disposed on the first measuring rod along a length direction of the first measuring rod, a first end of the reading pointer is vertically disposed on the second measuring rod, and a second end of the reading pointer is disposed adjacent to the scale line structure for reading the relative height difference.
Optionally, the scale line structure includes a zero scale line, and a positive scale line and a negative scale line located on the upper and lower sides of the zero scale line, and when the bottom end of the first measuring rod is flush with the bottom end of the second measuring rod, the second end of the reading pointer is flush with the zero scale line.
Optionally, the measuring rod has two opposite side portions in the thickness direction, and the connecting member and the reading portion are respectively disposed on the two side portions of the measuring rod.
Optionally, the measuring rod comprises a rod body and a propping part, and the propping part is detachably connected to the bottom end of the rod body and used for propping against the expansion joint or the bridge deck.
Optionally, the bottom end of the abutting portion is provided with a pointed structure.
Through the technical scheme, the utility model provides a measuring device for bridge, this measuring device for bridge is through setting up horizontal mechanism to be convenient for adjust the measuring stick to vertical extension, is favorable to the difference in height between accurate measurement bridge expansion joint and the bridge floor, and compared with the existing set square method, the precision of measuring result has been improved; during the use, support the bridge floor and the expansion joint of bridge respectively with the bottom of two measuring sticks, then adjust measuring stick to vertical setting through horizontal mechanism, read measuring result through reading portion at last to the relative difference in height between the bridge floor of record bridge and the expansion joint, simple and easy, it is convenient to measure, avoids the interference of driving a vehicle.
Drawings
Fig. 1 is a schematic structural diagram of a measuring device for a bridge according to the present invention.
Description of the reference numerals
1. A bridge deck; 2. an expansion joint; 3. a butting section; 4. a measuring rod; 5. a horizontal mechanism; 6. a pin shaft; 7. a connecting member; 8. a reading pointer; 9. scale line structure.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
The utility model provides a measuring device for bridge, as shown in fig. 1, measuring device includes horizontal mechanism and the measuring stick 4 that sets up in pairs, two in pairs 4 parallel arrangement of measuring stick and bottom are used for supporting respectively the bridge floor 1 of bridge and the expansion joint 2 of bridge, two measuring stick 4 has reading portion in order to be used for reading two the relative altitude difference of the bottom of measuring stick 4, horizontal mechanism 5 sets up perpendicularly in two one of them of measuring stick 4 and set up to extend along vertical direction for can adjusting this measuring stick 4.
Through the technical scheme, the utility model provides a measuring device for bridge, this measuring device for bridge is through setting up horizontal mechanism 5 to be convenient for adjust to vertical extension the measuring stick 4 that is provided with this horizontal mechanism 5, is favorable to the difference in height between bridge expansion joint 2 and the bridge floor 1 of accurate measurement, and the triangle chi method of the relatively existing has improved the precision of measuring result; during the use, support bridge floor 1 and the expansion joint 2 of bridge respectively with the bottom of two measuring sticks 4, then adjust measuring stick 4 to vertical setting through horizontal mechanism 5, read measuring result through reading portion at last to the relative difference in height between bridge floor 1 and the expansion joint 2 of record bridge, simple and easy, it is convenient to measure, safe practical avoids the interference of driving a vehicle, has solved the complex operation scheduling problem that the spirit level among the prior art need erect the scale on the expansion joint both sides and cause.
During the use, will be earlier two 4 bottoms of measuring stick support the bridge floor 1 of bridge and the expansion joint 2 of bridge respectively, then, transfer this measuring stick 4 that is provided with horizontal mechanism 5 through horizontal mechanism 5 to vertical extension, because another measuring stick 4 and this measuring stick 4 parallel arrangement, then another measuring stick 4 is vertical extension also, and finally, read the relative difference in height of the bottom of two measuring sticks 4 through reading portion, be the bridge floor 1 of bridge and the relative difference in height of expansion joint 2 of bridge promptly.
Further, the leveling mechanism 5 is set to be a level meter, the detection surface of the level meter is perpendicular to the length direction of the measuring rod 4, and the level meter is set to be capable of adjusting the detection surface to a horizontal plane, so that the measuring rod 4 extends along the vertical direction. Wherein, the spirit level can set up to various reasonable structures, for example, the bubble spirit level, and wherein, the measuring face of spirit level is the observation face of horizontal bubble, and when horizontal bubble was located the central horizontal circle of this observation face, for the observation face of bubble spirit level transfers to the level, that is to say the measuring face of spirit level transfers to the level.
According to the embodiment of the present invention, two measuring sticks 4 can be set to various reasonable forms to keep parallel to each other, for example, one of the two measuring sticks 4 is provided with a guide groove extending along the length direction of the measuring stick 4, and the other is provided with a guide block adapted to the guide groove, so that the two measuring sticks 4 can be always parallel to each other in the relative movement process. Preferably, the measuring device comprises a connecting mechanism, the connecting mechanism is respectively connected with the two measuring rods 4 and is set to enable the two measuring rods 4 to move relatively in the length direction, and the connecting mechanism enables the two measuring rods to be common linear rod pieces, so that the structures of the two measuring rods 4 are simplified, and the cost of the measuring rods 4 is reduced. The measuring rod can be made of various reasonable forms, for example, a rigid member made of aluminum alloy and the like.
As shown in fig. 1, the connecting mechanism includes two connecting members 7 disposed in parallel and spaced apart from each other, and both ends of the connecting members 7 are respectively hinged to the two measuring rods 4, so that the connecting members 7 and the measuring rods 4 together form a deformable parallelogram. Through the structure, the measuring device can realize the relative movement of the two measuring rods 4 in parallel all the time through changing the shape of the parallelogram, the accuracy of the measuring structure is guaranteed, the adjustment is more flexible, the operation is more convenient and fast, the carrying is convenient, the measuring operation can be completed by a single person, the measurement is more rapid and convenient, and the potential safety hazard of measuring personnel during field measurement is reduced. The connecting piece 7 and the measuring rod 4 can be hinged by a pin shaft 6, so that the connecting piece 7 and the measuring rod 4 can rotate relatively around the axis direction of the pin shaft under the action of external force and keep static after the action of the external force is cancelled.
Further, the two measuring rods 4 are respectively a first measuring rod and a second measuring rod, and the height of the hinged part of the connecting piece 7 and the first measuring rod relative to the bottom end of the first measuring rod and the height of the hinged part of the connecting piece 7 and the second measuring rod relative to the bottom end of the second measuring rod are kept consistent. It will be appreciated that the first measuring bar is the left-hand measuring bar of fig. 1 and the second measuring bar is the right-hand measuring bar of fig. 1, then: the height of the hinged position of the connecting piece 7 and the first measuring rod relative to the bottom end of the first measuring rod refers to the height of the hinged position of the left side of the connecting piece 7 from the bottom end of the left side measuring rod, and the height of the hinged position of the connecting piece 7 and the second measuring rod relative to the bottom end of the second measuring rod refers to the height of the hinged position of the right side of the connecting piece 7 from the bottom end of the right side measuring rod; that is, when the bottom end of the first measuring rod and the bottom end of the second measuring rod are flush, the left side hinge joint and the right side hinge joint of the connecting member 7 are flush, that is, the connecting member 7 extends horizontally, and at this time, the connecting member 7 and the measuring rod 4 jointly enclose a rectangle.
Furthermore, the reading portion comprises a scale line structure 9 and a reading pointer 8, the scale line structure 9 is arranged on the first measuring rod along the length direction of the first measuring rod, the first end of the reading pointer 8 is vertically arranged on the second measuring rod, the second end of the reading pointer 8 is arranged adjacent to the scale line structure 9 and used for reading the relative height difference, an operator can conveniently observe the relative position between the second end of the reading pointer 8 and the scale line structure 9 and read the relative height difference according to the relative position, the measurement result is more accurate, and errors caused by manual reading are reduced. It is worth mentioning that the first end of the reading pointer 8 and the second measuring rod cannot move or rotate relatively, for example, the first end of the reading pointer 8 and the second measuring rod may be fixedly assembled or integrally arranged.
Furthermore, the scale line structure 9 includes a zero scale line, and a positive scale line and a negative scale line located on the upper and lower sides of the zero scale line, and when the bottom end of the first measuring rod is flush with the bottom end of the second measuring rod, the second end of the reading pointer 8 is flush with the zero scale line, so that the relative height difference between the bottom ends of the two measuring rods can be reflected more directly, the corresponding conversion process is reduced, and the measurement structure is more intuitive and easy to obtain. The scale line structure has a measuring range of-45.0 mm to +45.0mm, and the distance between two adjacent scale lines is 1.0mm, which can be estimated to be 0.1 mm.
Further, the measuring rod 4 has two opposite side portions in the thickness direction, and the connecting member 7 and the reading portion are respectively disposed on the two side portions of the measuring rod 4. Specifically, measuring stick 4 includes the front side portion and the back side portion that fig. 1 is shown, and connecting piece 7 sets up the back side portion at two measuring sticks, and reading portion sets up the front side portion at two measuring sticks, is favorable to strengthening measuring device's overall stability, avoids two measuring sticks to appear the condition such as dislocation in the fore-and-aft direction of measuring stick when carrying out relative movement on length direction, has improved measuring result's reliability.
In the measuring process, the bottom end of the measuring rod 4 is directly contacted with the bridge deck 1 or the expansion joint 2, so that the conditions such as abrasion and the like occur, and the measuring result has errors. In order to reduce the error, measuring stick 4 includes the body of rod and supports portion 3, support portion 3 detachably connect in the bottom of the body of rod is in order to be used for supporting expansion joint 2 perhaps bridge floor 1, the convenience is in time changed according to the wearing and tearing condition who supports portion 3, has optimized measuring result's precision, has improved the reuse rate of measuring stick. Wherein, one of the body of rod and the portion of support 3 is provided with the arch, and the other is provided with the draw-in groove, and processing structure is simple, convenient dismantlement and equipment.
Further, the bottom of the supporting part 3 is set to be a pointed structure, so that the contact area between the supporting part 3 and the bridge floor 1 or the expansion joint 2 is reduced, and the measurement error caused by the fact that the supporting part 3 is subjected to the unevenness of the ground is effectively avoided. The abutting portion 3 may be a conical pointed structure.
When the measuring device is used for rapidly measuring the relative height difference between the bridge expansion joint 2 and the bridge deck 1, the method comprises the following steps:
first, measurement preparation: firstly, determining a position to be detected according to the requirements of a specification and a detection scheme, arranging temporary roadblocks and warning boards on a bridge floor according to a vehicle current limiting scheme to temporarily seal a single lane of the position to be detected, and dispatching a specially-assigned person to command and warn traffic flow of adjacent lanes so as to ensure the safety of field detection operation; then, cleaning the position to be detected to ensure that the part to be detected is flat and clean without foreign matters, wherein the part to be detected should be prevented from being locally concave-convex due to construction defects; next, the reading pointer 8 of the debugging and measuring device is adjusted to zero (that is, the second end of the reading pointer 8 is flush with the zero scale mark of the scale line structure 9), so as to ensure that the second end of the reading pointer 8 can be overlapped with the zero scale mark of the scale line structure 9 in the state that the bottom ends of the two measuring rods 4 have no relative height difference, and if the two measuring rods 4 cannot be effectively adjusted to zero, the abutting part 3 of the two measuring rods 4 needs to be replaced.
Secondly, field measurement: after the preparation work to be measured is finished, the abutting part 3 of the first measuring rod is overlapped with the point to be measured at the position to be measured at the bridge deck 1, the abutting part 3 of the second measuring rod is overlapped with the area to be measured at the position to be measured at the expansion joint 2, and the abutting parts 3 of the two measuring rods are slightly moved left and right along the extending direction of the ground so that the abutting part 3 is tightly attached to the ground at the position to be measured. At this time, due to the ground height difference between the bridge deck 1 and the expansion joint 2, the bottom ends of the two measuring rods 4 are relatively staggered up and down, and the second end of the reading pointer is not located at the zero scale mark position of the scale mark structure 9. Subsequently, assuming that the level meter is arranged on the second measuring rod (i.e. the right measuring rod as shown in fig. 1), the two measuring rods are adjusted slightly forward, backward, leftward and rightward, until the leveling bubble of the level meter is located in the middle horizontal ring, the observation surface of the level meter is adjusted to be horizontal, that is, the detection surface of the horizontal mechanism is adjusted to be horizontal, the two measuring rods 4 correspondingly extend vertically, at this time, the scale mark value at the scale mark structure 9 corresponding to the reading pointer 8 is rapidly read and recorded, and the scale mark value is the relative height difference between the bridge expansion joint 2 and the bridge deck 1, so that the height difference test between the bridge expansion joint 2 and the bridge deck 1 is completed. It is worth mentioning that in the process of adjusting the two measuring rods 4 to vertically extend, the abutting parts 3 of the two measuring rods 4 cannot be moved, and the abutting parts 3 are always in close contact with the ground.
Finally, the measurement and shift is completed: accomplish the discrepancy in elevation test back between bridge expansion joint 2 and the bridge floor 1, the tester gets back to safe region, inspects the wearing and tearing condition of portion 3 that supports of two measuring sticks 4 to the inspection of returning to zero, if support the portion 3 wearing and tearing obvious or can't accomplish effectively returning to zero, need in time change and support portion 3. And (3) removing the lane current limiting, repeating the step (1) according to a vehicle current limiting scheme and a measuring point arrangement scheme, and carrying out measurement preparation work of the next position to be measured. It can be seen that the whole equipment of the measuring device is more portable, easy to move, convenient to carry, and can be measured at any time and read at any time, and under the condition of effective safety guarantee, the road sealing operation can be avoided, and the influence of the measurement on traffic control or traffic flow limitation is effectively reduced.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The measuring device for the bridge is characterized by comprising a horizontal mechanism and measuring rods (4) arranged in pairs, wherein the two measuring rods (4) in pairs are arranged in parallel, the bottom ends of the two measuring rods are respectively used for abutting against a bridge deck (1) of the bridge and an expansion joint (2) of the bridge, the two measuring rods (4) are provided with reading parts for reading the relative height difference of the bottom ends of the two measuring rods (4), and the horizontal mechanism (5) is vertically arranged on one of the two measuring rods (4) and is arranged to be capable of adjusting the measuring rods (4) to extend in the vertical direction.
2. The measuring device for a bridge according to claim 1, characterized in that the level mechanism (5) is arranged as a level gauge, the detection surface of which is arranged perpendicular to the length direction of the measuring rod (4), the level gauge being arranged to be able to adjust the detection surface to a horizontal plane so that the measuring rod (4) extends in a vertical direction.
3. A measuring device for a bridge according to claim 1 or 2, characterized in that the measuring device comprises connecting means which are connected with the two measuring rods (4) respectively and which are arranged to enable relative displacement of the two measuring rods (4) in the length direction.
4. A measuring device for a bridge according to claim 3, characterized in that the connecting mechanism comprises two connecting members (7) arranged in parallel and spaced apart, and both ends of the connecting members (7) are hinged with the two measuring rods (4) respectively, so that the connecting members (7) and the measuring rods (4) jointly enclose a deformable parallelogram.
5. The measuring device for the bridge according to claim 4, characterized in that the two measuring rods (4) are a first measuring rod and a second measuring rod respectively, and the height of the joint of the connecting piece (7) and the first measuring rod relative to the bottom end of the first measuring rod and the height of the joint of the connecting piece (7) and the second measuring rod relative to the bottom end of the second measuring rod are kept consistent.
6. The measuring device for a bridge according to claim 5, wherein the reading portion comprises a graduation line structure (9) and a reading pointer (8), the graduation line structure (9) is arranged on the first measuring rod along the length direction of the first measuring rod, a first end of the reading pointer (8) is vertically arranged on the second measuring rod, and a second end is arranged adjacent to the graduation line structure (9) for reading the relative height difference.
7. The measuring device for a bridge according to claim 6, characterized in that the graduation mark structure (9) comprises a zero graduation mark and a positive graduation mark and a negative graduation mark located on the upper and lower sides of the zero graduation mark, and when the bottom end of the first measuring rod is flush with the bottom end of the second measuring rod, the second end of the reading pointer (8) is flush with the zero graduation mark.
8. The measuring device for a bridge according to claim 4, wherein the measuring rod (4) has two opposite side portions in the thickness direction, and the connecting member (7) and the reading portion are respectively disposed on the two side portions of the measuring rod (4).
9. The device according to claim 1, characterized in that said measuring rod (4) comprises a rod body and an abutting portion (3), said abutting portion (3) being removably connected to the bottom end of said rod body for abutting against said expansion joint (2) or said deck (1).
10. A measuring device for a bridge according to claim 9, characterized in that the bottom end of the abutment (3) is provided as a pointed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020998884.5U CN212133640U (en) | 2020-06-03 | 2020-06-03 | Measuring device for bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020998884.5U CN212133640U (en) | 2020-06-03 | 2020-06-03 | Measuring device for bridge |
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| CN212133640U true CN212133640U (en) | 2020-12-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566785A (en) * | 2021-07-16 | 2021-10-29 | 王爱峰 | Road and bridge safety detection device |
| CN113983905A (en) * | 2021-09-28 | 2022-01-28 | 晋西工业集团有限责任公司 | Hole depth and bottom thickness measuring device for cylindrical extruded blank |
| CN116182672A (en) * | 2023-04-25 | 2023-05-30 | 海南热带海洋学院崖州湾创新研究院 | Ocean sediment thickness variation measuring device and measuring method |
-
2020
- 2020-06-03 CN CN202020998884.5U patent/CN212133640U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566785A (en) * | 2021-07-16 | 2021-10-29 | 王爱峰 | Road and bridge safety detection device |
| CN113566785B (en) * | 2021-07-16 | 2023-02-28 | 王爱峰 | Road and bridge safety detection device |
| CN113983905A (en) * | 2021-09-28 | 2022-01-28 | 晋西工业集团有限责任公司 | Hole depth and bottom thickness measuring device for cylindrical extruded blank |
| CN116182672A (en) * | 2023-04-25 | 2023-05-30 | 海南热带海洋学院崖州湾创新研究院 | Ocean sediment thickness variation measuring device and measuring method |
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