Tie arch cable force adjusting device

Abstract

The utility model discloses a tie rod arch cable force adjusting device, a plurality of bridge piers are installed with crossbeam, the top of crossbeam is provided with arch rib, installs several suspender between arch rib and crossbeam, the top of suspender is installed on arch rib, after using anchor fixture spacing after the bottom of suspender is passed through crossbeam, the bottom of suspender is tensioned through oil pump, and the vibration testing instrument for gathering the vibration frequency of suspender is arranged on suspender, and suspender includes pe sheath and unbonded steel strand, and the notched is set up on pe sheath, and the vibration testing instrument is installed on unbonded steel strand, when tensioning suspender through oil pump, pressure monitoring is carried out through the oil pressure gauge matched with oil pump, and the vibration testing instrument is equipped simultaneously to carry out vibration frequency monitoring to unbonded steel strand, and the tension of suspender is monitored jointly, and then the tension of suspender is more uniform, makes its monitoring error smaller, and then improves the structural stability of tie rod arch bridge.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically to a tie-arch cable force adjustment device. Background Technology

[0002] Tied-arch bridges are structural systems that utilize tie cables to balance the horizontal thrust of the arch ribs. They are widely used due to their aesthetic appeal, large span capacity, and strong adaptability to foundation conditions. The cable force of the tie-arch bridge suspenders is a crucial indicator for evaluating the bridge's operational status. The rationality of the cable force distribution directly affects the structural alignment and the uniformity of internal force distribution. Therefore, the accuracy of suspender cable force measurement is directly related to the smooth implementation of construction control and accurate monitoring of the bridge during operation.

[0003] In existing technologies, the tensioning method for the tie cables of tied arch bridges generally involves using jacks at the anchor points at both ends of the tie cables for tensioning. The tension force of the suspenders is determined by a hydraulic pressure gauge, which typically has an error of ±5%. This relatively large error can lead to uneven distribution of the alignment and internal forces in the tied arch bridge structure, resulting in uneven tension distribution in the suspenders. This reduces the stability of the tied arch bridge structure and poses potential safety risks. Utility Model Content

[0004] The purpose of this invention is to provide a tie rod arch cable force adjustment device to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tie-rod arch cable force adjustment device, comprising: a bridge pier, multiple bridge piers with crossbeams installed on them, an arch rib provided above the crossbeams, a number of hangers installed between the arch ribs and the crossbeams, the top of the hangers being installed on the arch ribs, the bottom of the hangers being passed through the crossbeams and then limited by anchors, the bottom of the hangers being tensioned by an oil pump, and a vibration testing instrument for collecting the vibration frequency of the hangers being arranged on the hangers.

[0006] Furthermore, the boom includes a PE sheath and unbonded steel strands, the PE sheath has a slot, and the vibration testing instrument is mounted on the unbonded steel strands.

[0007] Furthermore, a silicone rubber sleeve is fitted on the outside of the slot, and screw holes are opened at both ends of the silicone rubber sleeve. The silicone rubber sleeve is locked to the outside of the lifting rod by bolts passing through the two screw holes.

[0008] Furthermore, the anchor is provided with a plurality of second wire passage holes that match the unbonded steel strands. Each unbonded steel strand passes through the corresponding second wire passage hole, and a second working clamp is sleeved on the unbonded steel strand, which is inserted into the second wire passage hole.

[0009] Furthermore, a groove is provided at the bottom of the crossbeam, and an anchor plate is provided in the groove, with the anchor plate located between the inner wall of the groove and the anchor.

[0010] Furthermore, the bottom of the oil pump is provided with a plurality of first working clips that match the unbonded steel strands. The unbonded steel strands are covered with the first working clips, and the first working clips are inserted into the first wire passage holes.

[0011] The beneficial effects of the tie rod arch cable force adjustment device provided by this utility model in the above technical solution are as follows:

[0012] When the suspenders are tensioned by an oil pump, the pressure is monitored by an oil pressure gauge used in conjunction with the oil pump. At the same time, a vibration testing instrument is used to monitor the vibration frequency of the unbonded steel strands. Both monitor the tension of the suspenders together, thereby ensuring that the tension of the suspenders is more uniform, reducing the monitoring error, and thus improving the structural stability of the tied arch bridge.

[0013] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0014] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 A structural schematic diagram provided for an embodiment of this utility model;

[0017] Figure 2 A schematic diagram of the anchor structure provided for an embodiment of this utility model;

[0018] Figure 3 Provided for the embodiments of this utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 Provided for the embodiments of this utility model Figure 1 Enlarged view at point B in the middle;

[0020] Figure 5 A schematic diagram of the internal structure of the silicone rubber sheath provided in this embodiment of the utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Pier; 2. Crossbeam; 21. Groove; 3. Arch rib; 4. Hanger; 41. Unbonded steel strand; 42. Groove; 5. Silicone rubber sheath; 51. Screw hole; 52. Bolt; 6. Oil pump; 61. First wire passage hole; 62. First working clamp; 7. Anchor plate; 8. Anchor; 81. Second wire passage hole; 82. Second working clamp; 9. Vibration testing instrument. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] Please see Figures 1-5 The tie-rod arch cable tension adjustment device includes: a pier 1, multiple piers 1 with crossbeams 2 installed on them, an arch rib 3 above the crossbeams 2, several hangers 4 installed between the arch ribs 3 and the crossbeams 2, the top of the hangers 4 is installed on the arch ribs 3, the bottom of the hangers 4 is passed through the crossbeams 2 and then limited by anchors 8, the bottom of the hangers 4 is tensioned by an oil pump 6, and a vibration testing instrument 9 is arranged on the hangers 4 to collect the vibration frequency of the hangers 4.

[0025] Specifically, when the oil pump 6 tensions the suspender 4, the pressure is monitored by an oil pressure gauge used in conjunction with the oil pump 6. At the same time, a vibration testing instrument 9 is used to monitor the vibration frequency of the unbonded steel strand 41. Both monitor the tension of the suspender 4, thereby ensuring that the tension of the suspender 4 is more uniform, reducing the monitoring error, and thus improving the structural stability of the tied arch bridge.

[0026] Furthermore, the boom 4 includes a PE sheath and unbonded steel strand 41. The PE sheath has a slot 42. A vibration testing instrument 9 is installed on the unbonded steel strand 41. The vibration testing instrument 9 includes a vibration pickup and a vibration frequency testing instrument. The vibration pickup is installed on the unbonded steel strand 41 for monitoring. The vibration pickup transmits the data to the vibration frequency testing instrument for data export and analysis. The tension of the boom 4 is adjusted according to the data from the vibration testing instrument 9 and the oil pressure gauge until it meets the specifications. The function of the PE sheath is to protect the unbonded steel strand 41 and prevent it from being corroded by rainwater.

[0027] Furthermore, a silicone rubber sleeve 5 is fitted on the outside of the slot 42. Both ends of the silicone rubber sleeve 5 are provided with screw holes 51. The silicone rubber sleeve 5 is locked to the outside of the hanger 4 after passing through the two screw holes 51 with bolts 52. When the hanger 4 is tensioned, the silicone rubber sleeve 5 is not fitted on the outside of the hanger 4. After the hanger 4 is installed, the silicone rubber sleeve 5 is fitted on the outside of the slot 42, covering the area of ​​20cm above and below the slot 42. It is then locked with bolts 52, thereby isolating it from the outside. Sealant is used to further seal the junction of the silicone rubber sleeve 5 and the hanger 4 at the upper and lower ends.

[0028] Furthermore, the anchor 8 is provided with a plurality of second wire passage holes 81 that match the unbonded steel strands 41. Each unbonded steel strand 41 passes through the corresponding second wire passage hole 81, and a second working clamp 82 is fitted on the unbonded steel strand 41. The second working clamp 82 is inserted into the second wire passage hole 81 and plays a role in clamping and fixing, so that the anchor 8 anchors the unbonded steel strands 41.

[0029] Furthermore, a groove 21 is provided at the bottom of the crossbeam 2, and an anchor plate 7 is provided in the groove 21. The anchor plate 7 is located between the inner wall of the groove 21 and the anchor 8. The function of the anchor plate 7 is to improve the stability of the anchor 8 when anchoring the hanger 4, and it can also protect the anchor 8 within a certain range.

[0030] Furthermore, the bottom of the oil pump 6 is provided with a plurality of first working clips 62 that match the unbonded steel strand 41. The unbonded steel strand 41 is covered with the first working clips 62, which are inserted into the first wire passage hole 61. The unbonded steel strand 41 is anchored in the oil pump 6 by the first working clips 62, thereby realizing the tensioning of the boom 4 by the oil pump 6.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tie rod arch cable tension adjustment device, comprising: A bridge pier (1) is characterized in that: a crossbeam (2) is installed on a plurality of the bridge piers (1), an arch rib (3) is provided above the crossbeam (2), a plurality of hangers (4) are installed between the arch rib (3) and the crossbeam (2), after the top of the hanger (4) is installed on the arch rib (3), the bottom of the hanger (4) is passed through the crossbeam (2) and then limited by an anchor (8), the bottom of the hanger (4) is tensioned by an oil pump (6), and a vibration testing instrument (9) for collecting the vibration frequency of the hanger (4) is arranged on the hanger (4).

2. The tie rod arch cable force adjustment device according to claim 1, characterized in that, The suspension rod (4) includes a PE sheath and an unbonded steel strand (41). The PE sheath has a slot (42). The vibration testing instrument (9) is installed on the unbonded steel strand (41).

3. The tie rod arch cable force adjustment device according to claim 2, characterized in that, A silicone rubber sleeve (5) is fitted on the outside of the slot (42). Both ends of the silicone rubber sleeve (5) are provided with screw holes (51). The silicone rubber sleeve (5) is locked to the outside of the rod (4) after passing through the two screw holes (51) with bolts (52).

4. The tie rod arch cable force adjustment device according to claim 2, characterized in that, The anchor (8) has multiple second wire passage holes (81) that match the unbonded steel strands (41). Each unbonded steel strand (41) passes through the corresponding second wire passage hole (81), and a second working clip (82) is fitted on the unbonded steel strand (41). The second working clip (82) is inserted into the second wire passage hole (81).

5. The tie rod arch cable force adjustment device according to claim 1, characterized in that, The bottom of the crossbeam (2) is provided with a groove (21), and an anchor plate (7) is provided in the groove (21). The anchor plate (7) is located between the inner wall of the groove (21) and the anchor (8).

6. The tie rod arch cable force adjustment device according to claim 2, characterized in that, The bottom of the oil pump (6) is provided with a plurality of first working clips (62) that match the unbonded steel strand (41). The unbonded steel strand (41) is covered with the first working clips (62), and the first working clips (62) are inserted into the first wire passage hole (61).

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