A bridge load test detection hanging rope device and use method

Abstract

The present invention discloses a bridge load test detection hanging rope device and a method of use, and belongs to the technical field of bridge load test detection. The device of the present invention has a simple structure and is easy to operate; it has multiple functions and can complete the load test detection of bridges under anti-collision guardrails of different sizes by changing the length of the clamping rod; the hanging rope can accurately find the pasting position of the strain gauge of the measured section without repeated adjustment; the position of the auxiliary plate can be changed to complete the load test detection of bridges of different heights, overcoming the limitation of a single size; the pasted strain gauge is not damaged by the deadweight of the wire carried by the hanging rope, thereby improving the test efficiency and saving the test cost.

Description

Technical Field

[0001] The invention relates to a bridge load test detection hanging rope device and a use method thereof, belonging to the technical field of bridge load test detection. Background Art

[0002] After a bridge is built and put into operation, the long-term effects of external factors such as the environment, geological activities, and vehicles will cause certain non-negligible damage to the bridge, affecting the bearing capacity of the bridge structure. In order to evaluate whether the bearing capacity of the built bridge meets the design requirements and determine the actual use conditions and operating conditions of the bridge, the most effective way to judge the bearing capacity characteristics of the bridge is to load test the target bridge. The test results can also provide necessary reference for bridge maintenance and repair.

[0003] When the bridge is subjected to load test, a strain gauge needs to be pasted on the bottom surface of the test section. In order to read the data of the strain gauge during the load test, the strain gauge needs to be connected to the data acquisition platform with the help of a wire after pasting the strain gauge. The data acquisition work platform is often set on the road surface of the bridge. The wire connected to the strain gauge needs to be pulled from the bottom of the bridge to the data collector on the bridge deck. However, the number of strain gauge points pasted on the test section is generally not less than 5. On the one hand, the number of wires will increase accordingly. On the other hand, the wires at the bottom of the bridge will fall due to their own weight, damaging the pasted strain gauges, thereby affecting the bridge load test. In order to solve the problem of the deadweight of the wires connecting the bridge bottom and the strain gauges, the previous solution is to use tape to stick the wires to the bottom of the bridge. This method not only consumes a lot of tape, but also because the surface of the bridge bottom is rough and dusty, the effect of the tape fixing the wires is not good. This requires large-scale polishing and cleaning of the bridge bottom surface, which is time-consuming and labor-intensive. At the same time, excessive use of tape will also bring subsequent environmental problems. Summary of the invention

[0004] The present invention provides a bridge load test detection hanging rope device and a use method, which are used to construct an auxiliary device for carrying the deadweight of a bridge load test conductor, thereby overcoming technical shortcomings in the bridge load test process.

[0005] The technical solution of the present invention is:

[0006] According to one aspect of the present invention, there is provided a bridge load test detection hanging rope device, comprising a main board 1, a sub-board 2, and a clamping rod 5, wherein one end of the main board 1 is used to connect the hanging rope, the other end of the main board 1 is connected to one end of the sub-board 2, and the other end of the sub-board 2 is a free end; the clamping rod 5 comprises a main board connecting section and a clamping section; one end of the main board connecting section is connected to one end of the clamping section, the main board connecting section is tightly fitted with the main board 1, and there is a gap between the other end of the clamping section and one side of the main board 1.

[0007] One end of the main board 1 is provided with a threaded through hole 18 and a rope threading hole 3 and is provided with a bolt 4, and the threaded through hole 18 and the rope threading hole 3 are arranged vertically.

[0008] A plurality of grooves 9 are provided on one side surface of the other end of the main board 1, and a through slide groove 10 arranged perpendicularly to the groove 9 is provided on the other end of the main board 1. One end of the sub-board 2 is inserted into the slide groove 16 at the other end of the main board 1 and passes through the through slide groove 10 through a T-shaped pin 11 to be clamped into the groove 9 on the surface of the main board 1, passes through the sub-board 2, and then passes out from the through slide groove 10 and is fixed by a nut II 12.

[0009] A fixed pulley 14 is installed at the other end of the auxiliary plate 2.

[0010] The mainboard connection section is provided with threads, and the mainboard connection section passes through the mainboard 1 and cooperates with the nut Ⅰ6 to realize the fastening of the beam side connection section and the mainboard 1; a rubber pad Ⅰ7 is arranged at the other end of the clamping section.

[0011] A rubber pad II8 is installed on one side of the main board 1 ; a rubber pad III13 is installed on the same side of the auxiliary board 2 and the main board 1 .

[0012] According to another aspect of the present invention, there is also provided a method for using a bridge load test detection hanging rope device, which is performed using two sets of bridge load test detection hanging rope devices;

[0013] Adjust the installation position between the main board 1 and the sub-board 2;

[0014] Place the main board 1 of the bridge load test rope detection device equipped with rubber pad II8 and the side of the sub-board 2 equipped with rubber pad III13 close to the outer side of the bridge guardrail, rotate the nut I6 to adjust the distance between the other end face of the clamping section in the clamping rod 5 and the outer side of the bridge guardrail, so that the rubber pad I7 on the other end face of the clamping section is close to the inner side of the bridge guardrail;

[0015] Pass one end of the hanging rope through the rope hole 3 of the main board 1 in the first set of bridge load test detection hanging rope device, screw the bolt 4 into the threaded through hole 18 and tighten it to fix one end of the hanging rope, then pull the hanging rope downward along the side of the main board 1 without the groove 9, continue to pull the hanging rope along the fixed pulley 14 of the sub-board 2 until the fixed pulley 14 of the sub-board 2 in the second set of bridge load test detection hanging rope device, pull the hanging rope upward along the side of the main board 1 of the second set of bridge load test detection hanging rope device without the groove 9, and then pass it through the rope hole 3 of the main board 1 in the second set of bridge load test detection hanging rope device, after pulling the hanging rope tightly, screw the bolt 4 of the second set of bridge load test detection hanging rope device into the threaded through hole 18 and tighten it to fix the other end of the hanging rope.

[0016] The beneficial effects of the present invention are as follows: the device of the present invention has a simple structure and is easy to operate; it has multiple functions and can complete the load test detection of bridges under anti-collision guardrails of different sizes by changing the length of the clamp rod; the hanging rope can accurately find the pasting position of the strain gauge of the measured section without repeated adjustment; the position of the auxiliary plate can be changed to complete the load test detection of bridges of different heights, overcoming the limitation of a single size; the hanging rope carries the dead weight of the wire so that the pasted strain gauge is not damaged, thereby improving the test efficiency and saving the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the explosion of the device of the present invention;

[0018] Figure 2 It is a front view of the present invention;

[0019] Figure 3 It is a left side view of the present invention;

[0020] Figure 4 A top view of the present invention;

[0021] Figure 5 A three-dimensional diagram of the mainboard of the present invention;

[0022] Figure 6 A three-dimensional diagram of the sub-plate of the present invention;

[0023] Figure 7 is a top view of the sub-plate of the present invention;

[0024] Figure 8 is a three-dimensional diagram of the clamping rod;

[0025] Fig. 9 is a three-dimensional diagram of a T-pin;

[0026] Fig.10 This is a schematic diagram of the installation of the hanging rope device;

[0027] The numbers in the figure are: 1-main board; 2-sub-board; 3-rope hole; 4-bolt; 5-clamp rod; 6-nut I; 7-rubber pad I; 8-rubber pad II; 9-groove; 10-through slide; 11-T-pin; 12-nut II; 13-rubber pad III; 14-fixed pulley; 15-perforation I; 16-slide; 17-perforation II; 18-threaded perforation; 19-hanging rope. DETAILED DESCRIPTION

[0028] The invention is further described below in conjunction with the accompanying drawings and embodiments, but the content of the invention is not limited to the scope of the embodiments.

[0029] Example 1: Figure 1-10As shown, a bridge load test detection hanging rope device includes a main board 1, a sub-board 2, and a clamping rod 5. One end of the main board 1 is used to connect the hanging rope 19, and the other end of the main board 1 is connected to one end of the sub-board 2, and the other end of the sub-board 2 is a free end; the clamping rod 5 includes a main board connecting section and a clamping section; one end of the main board connecting section is connected to one end of the clamping section, and the main board connecting section is tightly matched with the main board 1, and there is a gap between the other end of the clamping section and one side of the main board 1. It is suitable for bridges with concrete anti-collision guardrails such as simply supported beams, continuous beam bridges, and rigid frame bridges.

[0030] Alternatively, if Figure 1 As shown, a threaded through hole 18 and a rope threading hole 3 are provided at one end of the main board 1 and a bolt 4 is arranged, and the threaded through hole 18 and the rope threading hole 3 are arranged vertically.

[0031] Alternatively, if Figure 1-Figure 6 , Fig. 9 As shown, a plurality of grooves 9 are provided on one side surface of the other end of the main board 1, and a through slide groove 10 arranged perpendicularly to the groove 9 is provided on the other end of the main board 1, one end of the sub-board 2 is inserted into the slide groove 16 at the other end of the main board 1 and a T-shaped pin 11 passes through the through slide groove 10 to be clamped into the groove 9 on the surface of the main board 1, passes through the through hole Ⅱ17 provided on the sub-board 2, and then passes out from the through slide groove 10 and is fixed by the nut Ⅱ12.

[0032] Optionally, a fixed pulley 14 is installed at the other end of the sub-plate 2 to determine the tensioning direction of the hanging rope when tensioning the hanging rope.

[0033] Alternatively, if Figure 8 As shown, the mainboard connection section is provided with threads, and the mainboard connection section passes through the through hole Ⅰ15 provided on the mainboard 1 and cooperates with the nut Ⅰ6 to realize the fastening of the beam side connection section and the mainboard 1; a rubber pad Ⅰ7 is provided at the other end of the clamping section. In the embodiment of the present invention, the mainboard connection section and the clamping section are an integrated structure, and the mainboard connection section is a threaded section, and the length of the threaded section can be adjusted according to the actual engineering needs, so that when the nut 6 is tightened, the clamping rod 5 can smoothly clamp the bridge guardrail, so that the device is firmly installed; in the embodiment of the present invention, the clamping section cooperates with the mainboard, and the two are used to clamp the bridge guardrail.

[0034] Optionally, a rubber pad II8 is installed on one side of the main board 1; a rubber pad III13 is installed on the same side of the auxiliary board 2 and the main board 1. Further, the rubber pad II8, the rubber pad I7, and the rubber pad III13 are circular rubber pads, and the vertical distance between the center of the circle of the rubber pad II8 and the center of the circle of the rubber pad I7 is set to be smaller than the radius of the rubber pad I, and the radii of the rubber pad II8 and the rubber pad I7 are equal; the rubber pad III13 is installed on the same side of the auxiliary board 2 and the main board 1 and close to the pulley 14; by installing rubber pads at different positions, the friction between the clamp and the guardrail can be increased, and it is also convenient to clamp the bridge guardrail, and the bending of the auxiliary board can be effectively prevented.

[0035] In an optional embodiment of the present invention, for a set of bridge load test detection rope hanging device, the number of bolts 4 can be set to one, the number of clamping rods 5 to two, the number of nuts 6 to two, the number of rubber pads I7 to two, the number of rubber pads II8 to two, the number of rubber pads III13 to two, the number of grooves 9 to be opened according to engineering needs, and the length of the through slide 10 to be opened according to engineering needs. The rubber pad I7 is connected to the clamping rod 5 through a threaded structure, the rubber pad II8 is connected to the main board 1 through a threaded structure, the rubber pad III13 is connected to the sub-board 2 through a threaded structure, and the fixed pulley 14 is connected to the sub-board 2 by welding.

[0036] like Fig.10 As shown, a method for using a bridge load test detection hanging rope device is performed using two sets of bridge load test detection hanging rope devices;

[0037] Install two sets of bridge load test detection hanging rope devices on both sides of the tested section of the bridge: adjust the installation position between the main plate 1 and the sub-plate 2 according to the height of the outer side of the bridge anti-collision guardrail; place one side of the bridge load test detection hanging rope device main plate 1 equipped with rubber pad II8 and the sub-plate 2 equipped with rubber pad III13 close to the outer side of the bridge anti-collision guardrail, rotate nut I6 to adjust the distance between the other end face of the clamping section in the clamping rod 5 and the outer side of the bridge anti-collision guardrail, so that the rubber pad I7 on the other end face of the clamping section is close to the inner side of the anti-collision guardrail;

[0038] Install the hanging rope: pass one end of the hanging rope 19 through the rope threading hole 3 of the main board 1 in the first set of bridge load test detection hanging rope device, screw the bolt 4 into the threaded through hole 18 and tighten it to fix one end of the hanging rope 19, then pull the hanging rope downward along the side of the main board 1 without the groove 9, continue to pull the hanging rope 19 along the fixed pulley 14 of the sub-board 2 until the fixed pulley 14 of the sub-board 2 in the second set of bridge load test detection hanging rope device, pull the hanging rope upward along the side of the main board 1 of the second set of bridge load test detection hanging rope device without the groove 9, and then pass it through the rope threading hole 3 of the main board 1 in the second set of bridge load test detection hanging rope device. After pulling the hanging rope tightly, screw the bolt 4 of the second set of bridge load test detection hanging rope device into the threaded through hole 18 and tighten it to fix the other end of the hanging rope.

[0039] After the hanging rope device is installed, the test section and the strain gauge pasting position can be easily found according to the position of the hanging rope. In the subsequent process of connecting the wire and the strain gauge to the bridge deck, the wire can be tied to the hanging rope at a certain distance according to the actual situation. In this way, the deadweight of the wire is borne by the hanging rope, which solves the problem of damage to the pasted strain gauge due to the deadweight of the wire. Since the strain gauge is no longer affected by the deadweight of the wire, the bridge can be smoothly tested for load. Therefore, the tedious process of grinding and cleaning the pasting surface when pasting the tape under the bridge is avoided, which makes the operation more convenient, improves the efficiency of the load test, and also saves the amount of tape, which is more environmentally friendly. Furthermore, it also has the function of accurately determining the cross-section of the bridge load test.

[0040] Furthermore, the installation position between the main board 1 and the sub-board 2 is adjusted as follows: after inserting one end of the sub-board 2 into the desired position in the slide groove 16 at the other end of the main board 1, insert the threaded end of the T-shaped pin 11 from the side with the groove 9 of the main board 1 into the through slide groove 10, pass through the through hole 17 on the sub-board 2, and then pass out from the through slide groove 10, insert the crossbar of the T-shaped pin into the groove 9 on the main board 1, and finally screw the nut II 12 back to the threaded end of the T-shaped pin 11 until the main board 1 and the sub-board 2 are tightened and fixed, so that the sub-board 2 cannot slide freely in the slide groove 16 of the main board 1. It should be noted that the diameter of the clamping rod 5 is slightly smaller than the diameter of the through hole I 15, so that the clamping rod 5 can pass through the through hole I 15, and the diameter of the T-shaped pin 11 is slightly smaller than the diameter of the through hole II 17, so that the T-shaped plug 11 can pass through the through hole II 17 smoothly.

[0041] The specific implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A bridge load test detection rope hanging device, characterized in that: It comprises a main board (1), a sub-board (2), and a clamping rod (5); one end of the main board (1) is used to connect a hanging rope, the other end of the main board (1) is connected to one end of the sub-board (2), and the other end of the sub-board (2) is a free end; the clamping rod (5) comprises a main board connecting section and a clamping section; One end of the mainboard connecting section is connected to one end of the clamping section, the mainboard connecting section is tightly matched with the mainboard (1), and there is a gap between the other end of the clamping section and one side of the mainboard (1); One end of the main board (1) is provided with a threaded through hole (18) and a rope threading hole (3) and is provided with a bolt (4), and the threaded through hole (18) and the rope threading hole (3) are arranged vertically; A plurality of grooves (9) are provided on one side of the other end of the main board (1), and a through slide groove (10) arranged perpendicularly to the groove (9) is provided on the other end of the main board (1); one end of the sub-board (2) is inserted into the slide groove (16) at the other end of the main board (1) and passes through the through slide groove (10) through a T-shaped pin (11) to be clamped into the groove (9) on the surface of the main board (1), passes through the sub-board (2), and then passes out from the through slide groove (10) and is fixed by a nut II (12); A fixed pulley (14) is installed at the other end of the auxiliary plate (2); The mainboard connection section is provided with a thread, and the mainboard connection section passes through the mainboard (1) and cooperates with a nut I (6) to achieve fastening of the beam side connection section and the mainboard (1); a rubber pad I (7) is provided at the other end of the clamping section; A rubber pad II (8) is installed on one side of the main board (1); and a rubber pad III (13) is installed on the same side of the auxiliary board (2) and the main board (1).

2. A method for using a bridge load test detection hanging rope device, characterized in that: Two sets of bridge load test detection hanging rope devices as described in claim 1 are used for the test; Adjusting the installation position between the main board (1) and the sub-board (2); The main board (1) of the bridge load test detection rope hanging device is provided with a rubber pad II (8), and the side of the sub-board (2) is provided with a rubber pad III (13) close to the outer side of the bridge guardrail, and the nut I (6) is rotated to adjust the distance between the other end face of the clamping section in the clamping rod (5) and the outer side of the bridge guardrail, so that the rubber pad I (7) at the other end face of the clamping section is close to the inner side of the bridge guardrail; Pass one end of the hanging rope through the rope threading hole (3) of the main board (1) of the first set of bridge load test detection hanging rope device, screw the bolt (4) into the threaded through hole (18) and tighten it to fix one end of the hanging rope, then pull the hanging rope downward along the side of the main board (1) without the groove (9), continue to pull the hanging rope along the fixed pulley (14) of the auxiliary board (2) until the fixed pulley (14) of the auxiliary board (2) of the second set of bridge load test detection hanging rope device, pull the hanging rope upward along the side of the main board (1) without the groove (9) of the second set of bridge load test detection hanging rope device, and then pass it through the rope threading hole (3) of the main board (1) of the second set of bridge load test detection hanging rope device. After the hanging rope is pulled and tightened, screw the bolt (4) of the second set of bridge load test detection hanging rope device into the threaded through hole (18) and tighten it to fix the other end of the hanging rope.

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