Bridge limiting device and bridge

Abstract

The present invention relates to a bridge limit device and a bridge using the bridge limit device, the bridge limit device comprises two bases for being respectively installed on two adjacent beam ends, one of the bases is provided with a shear plate, the shear plate is tenoned into a shear tenon groove provided on the other base; and also comprises a longitudinal damper, the two ends of the longitudinal damper are respectively accommodated and fixed in the two bases. The present invention forms a shear tenon structure through the shear plate and the two bases, overcomes the limitation that the limiting object of the traditional transverse bridge limit device is the pier-beam, and enables the two adjacent beams to coordinate the transverse bridge deformation together; the longitudinal damper is integrated with the shear plate and installed in the two bases, which better solves the installation space problem of the damper, and realizes the control of the longitudinal displacement of the beam body or the vibration under the action of earthquake. Further, a receiving groove can be provided on the shear plate to facilitate the arrangement of the longitudinal damper, so that the bridge limit device is miniaturized and the longitudinal damper can be better protected.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a bridge limiting device and a bridge using the bridge limiting device. Background Art

[0002] Currently, damper devices and limit devices are widely used in bridges.

[0003] The main function of bridge dampers is to solve the vibration control problem of bridges under the influence of braking force, seismic force and wind force. The installation position is generally at the bottom of the beam or on the side of the beam of two adjacent bridges.

[0004] The main function of the limit device is to prevent large lateral displacement of curved bridges and beams under earthquake loads or wind loads, which may cause dangers such as falling beams. The installation position is generally next to the bottom support of the beam, and the object to limit the relative displacement is the beam body-bridge pier.

[0005] For rigid frame bridges without supports, it is necessary to limit the relative lateral displacement of the ends of two adjacent beams under vehicle loads to avoid relative misalignment of the beam ends, that is, the object to limit the relative lateral displacement is the beam body-beam body. At the same time, it is necessary to control its displacement under the longitudinal braking force and the vibration under the action of earthquake. The current limit devices and dampers cannot meet the requirements. In particular, there is no single structural component that can simultaneously realize the longitudinal energy dissipation and vibration reduction and lateral limit functions. The narrow gap between the two adjacent beam ends in actual projects also limits the installation space of the limit devices and dampers. Summary of the invention

[0006] The invention relates to a bridge limiting device and a bridge using the bridge limiting device, which can at least solve some defects of the prior art.

[0007] The present invention relates to a bridge limiting device, comprising two bases for being respectively installed on two adjacent beam ends, wherein one of the bases is provided with a shear plate, and the shear plate is tenoned into a shear tenon groove provided on the other base; and also comprising a longitudinal damper, the two ends of the longitudinal damper are respectively accommodated and fixed in the two bases.

[0008] As one of the embodiments, a receiving groove extending along the longitudinal bridge direction is formed on the top or bottom of the shear plate; in the vertical direction, the longitudinal damper is at least partially accommodated in the receiving groove.

[0009] As one of the embodiments, both ends of the longitudinal damper are connected to the corresponding side bases through joint bearings respectively.

[0010] As one of the embodiments, the length of the shear plate inserted into the shear groove is less than the groove depth of the shear groove.

[0011] As one of the embodiments, the fixed installation end of the shear plate is detachably connected to the corresponding base.

[0012] As one of the embodiments, both bases are provided with anchor rods for anchoring in the corresponding side beam ends.

[0013] As one of the embodiments, each of the bases is configured with a plurality of anchor rods and the anchor rods are distributed at the bottom end, the inner longitudinal bridge end and the two transverse bridge ends of the base.

[0014] As one of the embodiments, the bridge limiting device also includes a cover plate, which is installed on the top of the two bases and at least covers the beam gap between the two bases.

[0015] The present invention also relates to a bridge, comprising a plurality of beams connected in sequence along the longitudinal direction of the bridge, wherein the bridge limiting device as described above is arranged between two adjacent beams, and the two bases are respectively installed in the corresponding beam ends of the two beams.

[0016] As one of the embodiments, two adjacent beams are connected by a plurality of bridge limiting devices and each bridge limiting device is arranged in sequence along the transverse direction of the bridge.

[0017] The present invention has at least the following beneficial effects:

[0018] In the present invention, the shear plate and two bases form a shear tenon structure, which can overcome the limitation of the traditional transverse bridge limit device that the limit object is the pier-beam, so that the two adjacent beams can coordinate the transverse bridge deformation together, avoiding the mutual displacement of the beams to damage the railway track and the highway bridge deck and expansion joints. The longitudinal damper is integrated with the shear plate and installed in the same two bases, which better solves the installation space problem of the damper, realizes the control of the longitudinal displacement of the beam or the vibration under the action of earthquake, avoids the damage to the bridge structure caused by the excessive longitudinal displacement or vibration of the beam, and can adapt to the longitudinal expansion deformation and rotation of the main beam under the action of temperature load.

[0019] The present invention further has the following beneficial effects:

[0020] In the present invention, a receiving groove is provided on the shear plate to facilitate the arrangement of the longitudinal damper, which not only can significantly reduce the space required for the installation of the shear plate and the longitudinal damper, making the bridge limit device miniaturized and better adapting to the narrow space between two adjacent beam ends, but also can better protect the longitudinal damper and avoid the longitudinal damper from being damaged under the lateral displacement of the beam body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the vertical structure of the bridge limiting device provided by an embodiment of the present invention in the direction along the bridge;

[0023] Figure 2 A schematic diagram of the planar structure of the bridge limiting device provided by an embodiment of the present invention in the direction along the bridge;

[0024] Figure 3 A schematic diagram of the vertical structure of the bridge limiting device provided by an embodiment of the present invention in the transverse direction of the bridge;

[0025] Figure 4 A schematic diagram of the connection structure of two adjacent beams provided in an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Schematic diagram of the structure of one of the beam ends. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] like Figure 1-Figure 3 An embodiment of the present invention provides a bridge limit device 1, including two bases 101 for being respectively installed on two adjacent beam ends. In the project, the two bases 101 are respectively buried in the two beam ends, and the shape of the base 101 can be square, cylindrical, etc.

[0030] In an optional embodiment, the above-mentioned reference is a steel base 101, for example, a base 101 made of 0Cr19Ni10NbN steel, which has a long service life and can be well applied to rigid frame bridges.

[0031] Preferably, if Figure 1-Figure 3The two bases 101 are both provided with anchor rods 1011 for anchoring in the corresponding side beam ends, which can improve the stability and reliability of the anchoring structure of the base 101 and ensure the transverse bridge limiting effect and longitudinal bridge damping effect of the limiting device. Figure 1-Figure 3 Each of the bases 101 is equipped with a plurality of anchor rods 1011 and each anchor rod 1011 is distributed at the bottom end, the inner longitudinal bridge end and the two transverse bridge ends of the base 101. The surface of the anchor rod 1011 can be threaded to further improve the anchoring effect; in addition, the surface of each anchor rod 1011 can be oxidized to improve its service life.

[0032] A shear plate 102 is provided on one of the bases 101, and the shear plate 102 is mortised into a shear tenon groove provided on the other base 101; that is, a shear tenon groove is provided on the other base 101, and in the transverse direction, the width of the shear tenon groove is adapted to the width of the shear plate 102, so that the shear plate 102 can be inserted into the shear tenon groove to form a shear tenon structure.

[0033] In one embodiment, the transverse cross-section of the shear plate 102 is rectangular, and the shear mortise and tenon groove can be correspondingly set as a rectangular groove, and the transverse widths of the two are the same, ensuring that the shear plate 102 can be mortised into the shear mortise and tenon groove.

[0034] In an optional embodiment, the shear plate 102 is also a steel component, for example, a shear plate 102 made of 0Cr19Ni10NbN steel, to ensure its structural strength and service life.

[0035] It can be understood that one end of the shear plate 102 is a fixed installation end, which is used to be fixedly installed on one of the bases 101, and the other end of the shear plate 102 is a tenon end, which is inserted into the shear tenon groove of the other base 101. The fixed installation end and the corresponding base 101 can be fixedly connected in a non-detachable manner, such as welding; a more preferred solution is a detachable connection, which is convenient for later maintenance and replacement, such as fixing the shear plate 102 on the corresponding side base 101 by a plurality of countersunk bolts.

[0036] In a further preferred embodiment, Figure 2 The length of the shear plate 102 inserted into the shear tenon groove is less than the groove depth of the shear tenon groove, that is, there is a certain distance d between the tenon end of the shear plate 102 and the bottom of the shear tenon groove (that is, the end of the shear tenon groove away from its groove), ensuring that longitudinal deformation and rotation can occur freely between two adjacent beams 2.

[0037] like Figure 1-Figure 3The bridge limiting device 1 further includes a longitudinal damper 103, the two ends of which are respectively accommodated and fixed in the two bases 101. It can be understood that the longitudinal damper 103 can generate a damping force in the longitudinal direction of the bridge, which can control the displacement of the two adjacent beams 2 under the braking force in the longitudinal direction of the bridge or the vibration under the action of an earthquake.

[0038] Among them, conventional dampers 103 in the field of bridges are applicable to this embodiment, which can be purchased from the market, and the specific structure of the damper 103 is not described here. The two ends of the longitudinal damper 103 can be rigidly connected to the corresponding base 101 respectively; in another preferred structure, the two ends of the longitudinal damper 103 are respectively connected to the corresponding side base 101 through a joint bearing 1031, and the damping effect is better.

[0039] For the arrangement of the longitudinal damper 103, if space and other conditions permit, a damping groove may be provided on the base 101 to accommodate the corresponding end of the longitudinal damper 103. For rigid frame bridges and other situations where there may be a narrow space between two adjacent beam ends, the following optimized structure is adopted:

[0040] like Figure 1-Figure 3 The top or bottom of the shear plate 102 is provided with a receiving groove extending in the longitudinal direction; in the vertical direction, the longitudinal damper 103 is at least partially accommodated in the receiving groove. For ease of arrangement, it is preferred that the receiving groove is provided at the bottom of the shear plate 102, so that the cross-sectional area of ​​the shear plate 102 in the transverse direction is π-shaped.

[0041] exist Figure 1 and Figure 3 In the illustrated embodiment, in the vertical direction, the longitudinal damper 103 is partially located in the receiving groove of the shear plate 102 and partially located outside the shear plate 102. Corresponding grooves may be opened in the two bases 101, which will not be described in detail here.

[0042] Based on this structure, while ensuring the transverse limiting effect of the bridge, it is convenient to arrange the longitudinal damper 103, and can significantly reduce the space required for the installation of the shear plate 102 and the longitudinal damper 103, so that the bridge limiting device 1 is miniaturized and better adapts to the narrow space between the two adjacent beam ends.

[0043] In one embodiment, the slot width of the above-mentioned receiving slot is greater than the transverse width of the longitudinal damper 103, so that the longitudinal damper 103 can play its damping role. Accordingly, two raised ribs can be provided on the lower slot wall of the above-mentioned shear tenon slot (taking the shear tenon slot as a rectangular slot as an example, it includes two upper and lower slot walls opposite to each other in the vertical direction and two left and right slot walls opposite to each other in the transverse direction), and the two raised ribs are respectively provided close to the left and right slot walls, and are respectively surrounded by the left and right slot walls to form an embedded slot, and the two legs at the lower part of the above-mentioned shear plate 102 (i.e., the two side walls of the receiving slot) are inserted into the two embedded slots to ensure the stability of the shear tenon structure and the lateral limiting effect of the above-mentioned shear plate 102.

[0044] Further optimize the above embodiment, such as Figure 2 The bridge limit device 1 further comprises a cover plate 104, which is mounted on the top of the two bases 101 and at least covers the beam gap between the two bases 101. The cover plate 104 is preferably a stainless steel component, which is preferably detachably mounted on one or both bases 101, for example, by bolts; the cover plate 104 can protect the shear plate 102 and the longitudinal damper 103 from dust and rain.

[0045] Embodiment 2

[0046] like Figure 4 and Figure 5 The embodiment of the present invention provides a bridge, comprising a plurality of beams 2 connected in sequence along the longitudinal direction of the bridge, a bridge limiter 1 provided in the first embodiment is installed between two adjacent beams 2, and the two bases 101 are respectively installed in the corresponding beam ends of the two beams 2. The specific structure of the bridge limiter 1 and the installation structure in the corresponding beam ends are not described in detail here.

[0047] The above-mentioned bridge is preferably a rigid frame bridge.

[0048] More preferably, if Figure 5 The two adjacent beams 2 are connected by a plurality of bridge limiting devices 1 and each bridge limiting device 1 is arranged in sequence along the transverse direction of the bridge, thereby ensuring the transverse limiting effect and longitudinal damping and vibration reduction effect of the bridge.

[0049] like Figure 4 and Figure 5 , construction workers need to enter the beam end through the beam end manhole 201 to transport and install the above-mentioned bridge limiting device 1. Due to the size limitation of the manhole 201, the installation of the bridge limiting device 1 is difficult. The bridge limiting device 1 provided in the above-mentioned embodiment 1 is relatively small in size, especially the structure in which the longitudinal damper 103 is arranged in the accommodating groove opened on the shear plate 102, so it can better adapt to the limitations of engineering conditions and ensure the engineering installation quality and the use effect of the bridge limiting device 1.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge limit device, characterized in that: It comprises two bases for being respectively installed on two adjacent beam ends, wherein one of the bases is provided with a shear plate, and the shear plate is tenoned into a shear tenon groove provided on the other base; It also includes a longitudinal damper, the two ends of which are respectively accommodated and fixed in the two bases; The top or bottom of the shear plate is provided with a receiving groove extending in the longitudinal direction; in the vertical direction, the longitudinal damper is at least partially received in the receiving groove; The groove width of the accommodating groove is greater than the transverse width of the longitudinal damper; the shear force tenon groove is a rectangular groove, which includes two upper and lower groove walls opposite to each other in the vertical direction and two left and right groove walls opposite to each other in the transverse direction, and two protruding ribs are arranged on the lower groove wall of the shear force tenon groove, and the two protruding ribs are respectively arranged close to the left and right groove walls, and are respectively surrounded by the left and right groove walls to form an embedded slot, and the two legs at the lower part of the shear plate are embedded in the two embedded slots; The two ends of the longitudinal damper are respectively connected to the corresponding side bases through joint bearings.

2. The bridge limiting device according to claim 1, characterized in that: The length of the shear plate inserted into the shear groove is less than the groove depth of the shear groove.

3. The bridge limiting device according to claim 1, characterized in that: The fixed installation end of the shear plate is detachably connected to the corresponding base.

4. The bridge limiting device according to claim 1, characterized in that: Both bases are provided with anchor rods for anchoring in the corresponding side beam ends.

5. The bridge limiting device according to claim 4, characterized in that: Each of the bases is equipped with a plurality of anchor rods, and the anchor rods are distributed at the bottom end, the inner longitudinal bridge end and the two transverse bridge ends of the base.

6. The bridge limiting device according to claim 1, characterized in that: It also includes a cover plate, which is installed on the top of the two bases and at least covers the beam gap between the two bases.

7. A bridge comprising a plurality of beams connected in sequence along the longitudinal direction of the bridge, characterized in that: A bridge limiting device as described in any one of claims 1 to 6 is installed between two adjacent beam bodies, and the two bases are respectively installed in the corresponding beam ends of the two beam bodies.

8. The bridge according to claim 7, characterized in that: Two adjacent beam bodies are connected by a plurality of bridge limiting devices, and each bridge limiting device is arranged in sequence along the transverse direction of the bridge.

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