CN210108580U - Bridge external cable effective stress testing device - Google Patents
Bridge external cable effective stress testing device Download PDFInfo
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- CN210108580U CN210108580U CN201920833198.XU CN201920833198U CN210108580U CN 210108580 U CN210108580 U CN 210108580U CN 201920833198 U CN201920833198 U CN 201920833198U CN 210108580 U CN210108580 U CN 210108580U
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- external cable
- measuring
- fixed connection
- bridge
- effective stress
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Abstract
The utility model provides an effective stress testing arrangement of external cable of bridge, including bridge, stiff end, external cable, leveling rod, spacing slider, vertical measuring rod, measuring apparatu and display device, bridge below both ends symmetry is equipped with the stiff end, external cable both ends fixed connection the stiff end, leveling rod fixed connection the stiff end, and leveling rod is located external cable below, sliding connection on the leveling rod spacing slider, leveling rod one end fixed connection the measuring apparatu, vertical measuring rod fixed connection external cable, vertical measuring rod lower extreme is connected the measuring apparatu, the measuring apparatu passes through radio connection display device.
Description
Technical Field
The utility model mainly relates to a dynamic measurement field especially has related to an external cable effective stress testing arrangement of bridge.
Background
In the existing highway bridges in China, after a large number of bridges are operated for many years, the bearing capacity cannot meet the requirement of increasing traffic volume, when the lower edge of the midspan section of a bridge structure is not allowed to have tensile stress or the tensile stress is over-limited, active reinforcement is often required to be carried out by applying prestress, and a common prestress reinforcement measure is an external prestress reinforcement method.
Because the deformation of the external prestressed tendons is inconsistent with the deformation of the concrete, the loss of the prestress is easily caused, the old bridge which is still in use at present is detected in real time, the bearing condition and the service life of the old bridge are detected, and the method has important significance for engineering transportation and comprehensive investigation of the old bridge. At present, the cable force detection technology for cable-stayed bridges, suspension bridges and other cable support structure system bridges is mature, and comprises hydraulic test, under-anchor sensor test, static strain test, string vibration test, magnetic flux test, optical fiber sensor and other test methods. However, these testing methods have not been well applied to testing the effective stress of the in vitro cable with polylines and relatively undefined boundary conditions.
SUMMERY OF THE UTILITY MODEL
The utility model provides an external cable effective stress testing arrangement of bridge is used for solving among the prior art that proposes in the background art the cable force detection technique to cable-stay bridge, suspension bridge etc. cable support structure system bridge comparatively ripe, test methods such as hydraulic pressure test, anchor sensor test, static strain test, string shake test, magnetic flux test and optical fiber sensor, but these test methods are still not fine to the test of polyline, boundary condition external cable effective stress yet can not be fine the problem of using.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an effective stress testing arrangement of external cable of bridge, includes bridge, stiff end, external cable, level measurement pole, limit slide, vertical measuring stick, measuring apparatu and display device, bridge below both ends symmetry is equipped with the stiff end, external cable both ends fixed connection the stiff end, level measurement pole fixed connection the stiff end, and the level measurement pole is located external cable below, sliding connection on the level measurement pole limit slide, level measurement pole one end fixed connection the measuring apparatu, vertical measuring stick fixed connection external cable, vertical measuring stick lower extreme is connected the measuring apparatu, the measuring apparatu passes through radio connection display device.
Preferably, the fixed ends on the two sides are fixedly connected with two horizontal measuring rods, and the left side and the right side of the measuring instrument are connected with four horizontal measuring rods.
Preferably, the left end of the horizontal measuring rod is fixedly connected with a first mounting plate, the horizontal measuring rod is fixedly connected with the first mounting plate through a first fixing bolt, the first mounting plate is fixedly connected with the first mounting plate through a second fixing bolt, the number of the first fixing bolts is eight, and the number of the second fixing bolts is twelve.
Preferably, the limiting slide block is connected with the horizontal measuring rod in a sliding mode, two through holes are symmetrically formed in the limiting slide block, the size of each through hole corresponds to the size of the horizontal measuring rod, a fixed rod is fixedly connected to the upper portion of the limiting slide block, a second mounting plate is fixedly connected to the upper portion of the fixed rod, threads are arranged on the outer surface of the upper end of the fixed rod, threaded holes are correspondingly formed in the second mounting plate, the fixed rod is fixedly connected with the second mounting plate through the threads, the second mounting plate is fixedly connected with the bridge through a third fixing bolt, and the number of the third fixing bolts is eight.
Preferably, a temporary fixing plate is fixedly arranged on the external cable, the lower part of the temporary fixing plate is fixedly connected with the vertical measuring rods, and two vertical measuring rods are arranged in parallel.
Preferably, a pressure sensor is arranged in the measuring instrument, the pressure sensor is fixedly connected with the horizontal measuring rod and the vertical measuring rod, the pressure sensor is connected with the display device through a wireless connector, a built-in power supply is arranged in the measuring instrument, and the pressure sensor is connected with the built-in power supply through a conducting wire.
Preferably, the temporary fixing plate is fixedly installed at the central point of the external cable, the measuring instrument is located under the temporary fixing plate, and the vertical measuring rod and the horizontal measuring rod are symmetrically and horizontally arranged around the central point of the external cable.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts the design of double measuring rods, the single measuring rod can shift in the process of stress transmission, and the double measuring rods can better transmit stress;
2. the utility model is provided with the limiting slider above the horizontal measuring rod, and the limiting slider is fixedly connected with the bridge, so that the stress transmitted by the horizontal measuring rod does not mix with the shear stress in the vertical direction, and the display result of the stress in the vertical direction is prevented from being influenced;
3. the utility model discloses place the measuring apparatu in external cable central point below for vertical measuring stick can not receive the influence of horizontal direction stress, also can make the stress of both sides horizontal measuring stick transmission more even, makes the display result more accurate.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the measuring instrument of the present invention;
FIG. 3 is a schematic structural view of the limiting slider of the present invention;
fig. 4 is a schematic diagram of a second mounting plate structure of the present invention;
fig. 5 is a schematic diagram of a first mounting plate structure of the present invention.
In the figure: 1-bridge, 2-fixed end, 3-external cable, 31-temporary fixing plate, 4-horizontal measuring rod, 41-first mounting plate, 42-first fixing bolt, 43-second fixing bolt, 5-limiting slide block, 51-through hole, 52-fixing rod, 53-second mounting plate, 54-threaded hole, 55-third fixing bolt, 6-vertical measuring rod, 7-measuring instrument, 71-pressure sensor, 72-internal power supply and 8-display device.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.
In an embodiment, referring to fig. 1-5, a device for testing effective stress of an external cable of a bridge comprises a bridge 1, a fixed end 2, an external cable 3, a horizontal measuring rod 4, a limiting slide block 5, a vertical measuring rod 6, a measuring instrument 7 and a display device 8, the fixed ends 2 are symmetrically arranged at the two ends of the lower part of the bridge 1, the two ends of the external rope 3 are fixedly connected with the fixed ends 2, the horizontal measuring rod 4 is fixedly connected with the fixed ends 2, and the horizontal measuring rod 4 is positioned below the external cable 3, the horizontal measuring rod 4 is connected with the limit slide block 5 in a sliding way, one end of the horizontal measuring rod 4 is fixedly connected with the measuring instrument 7, the vertical measuring rod 6 is fixedly connected with the external cable 3, the lower end of the vertical measuring rod 6 is connected with the measuring instrument 7, and the measuring instrument 7 is connected with the display device 8 through radio.
In the embodiment, referring to fig. 1-2, two horizontal measuring rods 4 are fixedly connected inside the fixed ends 2 at two sides, and four horizontal measuring rods 4 are connected to the left and right sides of the measuring instrument 7.
In an embodiment, referring to fig. 5, a first mounting plate 41 is fixedly connected to a left end of the horizontal measuring rod 4, the horizontal measuring rod 4 is fixedly connected to the first mounting plate 41 through a first fixing bolt 42, the first mounting plate 41 is fixedly connected to the first mounting plate 41 through a second fixing bolt 43, the number of the first fixing bolts 42 is eight, and the number of the second fixing bolts 43 is twelve.
In an embodiment, referring to fig. 4, the limiting slider 5 is slidably connected to the leveling rod 4, two through holes 51 are symmetrically formed in the limiting slider 5, the size of each through hole 51 corresponds to the size of the leveling rod 4, a fixing rod 52 is fixedly connected to the upper side of the limiting slider 5, a second mounting plate 53 is fixedly connected to the upper side of the fixing rod 52, threads are formed on the outer surface of the upper end of the fixing rod 52, a threaded hole 54 is correspondingly formed in the second mounting plate 53, the fixing rod 52 and the second mounting plate 53 are fixedly connected through the threads, the second mounting plate 53 is fixedly connected to the bridge 1 through a third fixing bolt 55, and the number of the third fixing bolts 55 is eight.
In an embodiment, referring to fig. 1, a temporary fixing plate 31 is fixedly arranged on the extracorporeal cable 3, the vertical measuring rods 6 are fixedly connected below the temporary fixing plate 31, and two vertical measuring rods 6 are arranged in parallel.
In an embodiment, referring to fig. 2, a pressure sensor 71 is disposed inside the measuring instrument 7, the pressure sensor 71 is fixedly connected to the horizontal measuring rod 4 and the vertical measuring rod 6, the pressure sensor 71 is connected to the display device 8 through a wireless link, an internal power source 72 is disposed inside the measuring instrument 7, and the pressure sensor 71 is connected to the internal power source 72 through a wire.
In an embodiment, referring to fig. 1, the temporary fixing plate 31 is fixedly installed at a central point of the external cable 3, the measuring instrument 7 is located right below the temporary fixing plate 31, and the vertical measuring rod 6 and the horizontal measuring rod 4 are horizontally arranged around the central point of the external cable 3 symmetrically.
The working principle is as follows: referring to fig. 1-5, during measurement, first mounting plates 41 are mounted on the inner sides of the two fixed ends 2, then horizontal measuring rods 4 are mounted, limit sliders 5 are mounted on the horizontal measuring rods 4, a temporary fixing plate 31 is mounted at the center of the outer cable 3, a vertical measuring rod 6 and a measuring instrument 7 are mounted below the temporary fixing plate 31, after all devices are fixedly mounted, information displayed on a display device 8 can be observed and recorded above the bridge 1, when a vehicle passes through, the horizontal measuring rod 4 transmits stress in the horizontal direction to a pressure sensor 71, the vertical measuring rod 6 transmits stress in the vertical direction to the pressure sensor 71, the pressure sensor 71 transmits information to the display device 8, and the working process is completed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents, and thus the embodiments of the invention are intended only as illustrative examples of the invention and no limitation of the invention is intended whatsoever to be construed by the embodiments of the invention.
Claims (7)
1. The utility model provides an external cable effective stress testing arrangement of bridge, includes bridge (1), stiff end (2), external cable (3), horizontal measurement pole (4), spacing slider (5), vertical measuring stick (6), measuring apparatu (7) and display device (8), its characterized in that: bridge (1) below both ends symmetry is equipped with stiff end (2), external cable (3) both ends fixed connection stiff end (2), level measuring stick (4) fixed connection stiff end (2), and level measuring stick (4) are located external cable (3) below, sliding connection on level measuring stick (4) spacing slider (5), level measuring stick (4) one end fixed connection measuring apparatu (7), vertical measuring stick (6) fixed connection external cable (3), vertical measuring stick (6) lower extreme is connected measuring apparatu (7), measuring apparatu (7) are through radio connection display device (8).
2. The device for testing the effective stress of the external cable of the bridge according to claim 1, wherein: two horizontal measuring rods (4) are fixedly connected to the inner portions of the fixed ends (2) on the two sides, and the left side and the right side of the measuring instrument (7) are connected with four horizontal measuring rods (4) in total.
3. The device for testing the effective stress of the external cable of the bridge according to claim 1, wherein: horizontal measuring stick (4) left end fixedly connected with first mounting panel (41), horizontal measuring stick (4) are through first fixing bolt (42) fixed connection first mounting panel (41), first mounting panel (41) are through second fixing bolt (43) fixed connection first mounting panel (41), eight total fixing bolt (42), twelve total second fixing bolt (43).
4. The device for testing the effective stress of the external cable of the bridge according to claim 1, wherein: spacing slider (5) sliding connection level measurement pole (4), spacing slider (5) internal symmetry is equipped with two through-holes (51), through-hole (51) size corresponds level measurement pole (4) size, spacing slider (5) top fixedly connected with dead lever (52), dead lever (52) top fixed connection second mounting panel (53), dead lever (52) upper end surface is equipped with the screw thread, it is equipped with screw hole (54) to correspond on second mounting panel (53), dead lever (52) with second mounting panel (53) are through screw thread fixed connection, second mounting panel (53) are through third fixing bolt (55) fixed connection bridge (1), third fixing bolt (55) are total eight.
5. The device for testing the effective stress of the external cable of the bridge according to claim 1, wherein: the outer cable (3) of body is fixed and is equipped with interim fixed plate (31), interim fixed plate (31) below fixed connection vertical measuring stick (6), vertical measuring stick (6) total two are and arrange side by side.
6. The device for testing the effective stress of the external cable of the bridge according to claim 1, wherein: the measuring instrument is characterized in that a pressure sensor (71) is arranged inside the measuring instrument (7), the pressure sensor (71) is fixedly connected with the horizontal measuring rod (4) and the vertical measuring rod (6), the pressure sensor (71) is connected with the display device (8) through a radio, a built-in power supply (72) is arranged inside the measuring instrument (7), and the pressure sensor (71) is connected with the built-in power supply (72) through a lead.
7. The device for testing the effective stress of the external cable of the bridge according to claim 5, wherein: the temporary fixing plate (31) is fixedly installed at the central point of the external cable (3), the measuring instrument (7) is located under the temporary fixing plate (31), and the vertical measuring rod (6) and the horizontal measuring rod (4) are symmetrically and horizontally arranged around the central point of the external cable (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833198.XU CN210108580U (en) | 2019-06-04 | 2019-06-04 | Bridge external cable effective stress testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833198.XU CN210108580U (en) | 2019-06-04 | 2019-06-04 | Bridge external cable effective stress testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210108580U true CN210108580U (en) | 2020-02-21 |
Family
ID=69563099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920833198.XU Expired - Fee Related CN210108580U (en) | 2019-06-04 | 2019-06-04 | Bridge external cable effective stress testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210108580U (en) |
-
2019
- 2019-06-04 CN CN201920833198.XU patent/CN210108580U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |