Beam falling prevention embedded part and bridge with same

Abstract

The utility model discloses an anti-beam-falling embedded part and a bridge with the same. The anti-beam-falling embedded part comprises an embedded cylinder, a displacement cylinder, an anchor rod, a damping spring and a dowel bar, a plurality of anchoring holes are formed in the peripheral side of the embedded cylinder; the displacement cylinder coaxially sleeves the inner cavity of the pre-embedded cylinder, and a plurality of through holes are formed in the periphery of the displacement cylinder; the outer wall, perpendicular to the embedded cylinder, of the anchor rod penetrates through the anchoring hole and the through hole, one end of the anchor rod slidably abuts against the hole wall of the through hole, and the other end of the anchor rod is exposed out of the embedded cylinder. The rod wall of the anchor rod is sleeved with the damping spring, one end of the damping spring abuts against the inner wall of the embedded cylinder, and the other end of the damping spring abuts against the outer wall of the displacement cylinder. One end of the dowel bar is vertically inserted into the inner cavity of the displacement cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge seismic technology field more specifically relates to a kind of anti-falling beam embedded part and bridge with it. BACKGROUND

[0002] When earthquake, beam body falls is one of the main forms of bridge seismic damage, and the beam body falls can cause great damage to bridge structure, and the difficulty of post-earthquake repair is also great, therefore, in bridge seismic design, preventing earthquake beam body from falling is a very important issue.

[0003] In the past bridge seismic design, limiting stopper device is arranged between beam body and pier or abutment, when earthquake occurs, limiting stopper can limit the excessive displacement between beam body and pier or abutment after support bolt is sheared, to avoid beam body from falling, at the same time, limiting stopper directly transmits the seismic force of main beam to pier or abutment. Block limiting device is often used as bridge anti-falling beam device, but the longitudinal and transverse of this limiting device are separated, made of profile steel, the volume is large, and its working performance is controlled by the gap between block and supporting cushion stone. When the gap is small, the temperature force of beam body cannot be effectively released, and when the gap is large, the collision between block and supporting cushion stone occurs when earthquake occurs, thereby affecting the anti-falling beam function. Therefore, builders consider anti-falling beam embedded part as a technical means of bridge seismic.

[0004] Anti-falling beam embedded part is an important part of bridge structure, mainly used for preventing beam body from falling or separating caused by earthquake and other natural disasters, to ensure the safety and stability of bridge. According to the search results, anti-falling beam embedded part is usually installed between bridge beam body and pier, connected with anti-falling beam block, to limit the displacement of beam body.

[0005] In the prior art, the head and tail of anti-falling beam are embedded into bridge body through embedded part during installation of anti-falling beam, the embedded part is welded to bottom plate after welding multiple bending parts around sleeve, to complete overall assembly, but after long-term use, people find that the structure is prone to fracture in strong earthquake, resulting in failure of anti-falling beam and beam body falling, because there are too many spot welding positions, and the embedded part is easily impacted by the violent shaking of beam body when high-intensity earthquake occurs.

[0006] Therefore, how to provide an anti-falling beam embedded part with excellent seismic performance, small construction difficulty and low cost, and bridge, which can limit the transverse and longitudinal displacement of beam body at the same time, is a problem to be solved by those skilled in the art. UTILITY MODEL CONTENTS

[0007] Therefore, the utility model provides an anti-falling beam embedded part and bridge with it, to solve the above technical problems.

[0008] In order to achieve the above object, the utility model adopts the following technical scheme:

[0009] A prevent falling roof preformed part, it includes:

[0010] Preformed barrel, the circumferential side of preformed barrel is equipped with a plurality of anchor holes;

[0011] Displacement cylinder, the inner chamber of the preformed barrel is coaxially sleeved in the displacement cylinder, and its outer wall is equipped with a plurality of through holes corresponding to the plurality of anchor holes;

[0012] Anchor rod, the outer wall of the preformed barrel is arranged vertically, and the rod wall is respectively penetrated through the anchor hole and the through hole, and the one end of the anchor rod is slidably contacted with the hole wall of the displacement cylinder relative to the through hole, and the other end is exposed to the preformed barrel;

[0013] Shock-absorbing spring, the rod wall of the anchor rod is sleeved, and the one end is contacted with the inner wall of the preformed barrel, and the other end is contacted with the outer wall of the displacement cylinder;

[0014] Force transmission rod, one end of the force transmission rod is vertically inserted into the inner chamber of the displacement cylinder.

[0015] The beneficial effects of the above technical scheme are that the displacement cylinder is supported in the inner chamber of the preformed barrel by a plurality of anchor rods, the force transmission rod is vertically inserted into the inner chamber of the displacement cylinder, under the action of the earthquake force, the force transmission rod transmits the earthquake load, under the action of the earthquake load, according to the direction of the earthquake force, the displacement cylinder can slide along the anchor rod to compress the shock-absorbing spring, and the shock-absorbing spring resets to reset the displacement cylinder after the earthquake disappears.

[0016] Preferably, the inner chamber of the displacement cylinder is sequentially separated into a fixed cavity and an anchor cavity by a partition plate, one end of the force transmission rod is inserted into the fixed cavity, the end of the anchor rod away from the preformed barrel is inserted into the anchor cavity, and the force transmission rod and the anchor rod are arranged vertically. The displacement cylinder is separated into two cavities by the partition plate, so that the force transmission rod and the anchor rod do not affect each other, the displacement cylinder does not interfere with the anchor rod, and the effective sliding of the displacement cylinder along the anchor is guaranteed.

[0017] Preferably, the outer wall of the one end of the force transmission rod close to the displacement cylinder is tightly matched with the inner wall of the fixed cavity of the displacement cylinder. The effective connection between the force transmission rod and the displacement cylinder is ensured.

[0018] Preferably, a flexible sealing gasket is embedded between the outer wall of the force transmission rod and the inner wall of the top end of the preformed barrel. The flexible sealing gasket can seal the preformed barrel, and when the force transmission rod moves with the displacement cylinder, the compressible property of the flexible sealing gasket does not limit the movement of the force transmission rod.

[0019] Preferably, the anchor rod is provided with four rods arranged in an array along the circumference of the embedded cylinder.

[0020] Preferably, a pressing plate is further included, which is sleeved on the anchor rod, and one side plate surface of the pressing plate is abutted with the outer wall of the displacement cylinder, and the other side plate surface is fixed with the end of the damping spring away from the inner wall of the embedded cylinder. The displacement cylinder is moved by compressing the damping spring through the pressing plate, and the damping spring is not in direct contact with the displacement cylinder, thereby prolonging the service life of the displacement cylinder.

[0021] Preferably, the end of the anchor rod away from the displacement cylinder is L-shaped, T-shaped or C-shaped. The anchoring performance of the anchor rod is improved.

[0022] The utility model also provides a kind of bridge, using the embedded part in the above technical solution, further including bent cap and beam body, the top surface of the bent cap is fixed with support, and the bottom end surface of the beam body is abutted with the top end surface of the support;The embedded cylinder is embedded in the top surface of the bent cap relative to the circumference of the support, and the end of the anchor rod away from the displacement cylinder is anchored in the bent cap;The end of the force bar away from the displacement cylinder is fixed with the bottom surface of the beam body end flange plate.

[0023] The beneficial effects of the above technical solution are that the embedded part is embedded in the top surface of the bent cap corresponding to the beam body flange plate, the beam body and the displacement cylinder are connected by the force bar, after the beam body moves horizontally or longitudinally under the action of earthquake, the beam body will drive the displacement cylinder to slide along the anchoring and compress the damping spring in the movement direction of the beam body, and the damping spring resets to drive the beam body to reset after earthquake, thereby ensuring the seismic and self-resetting performance of the beam body.

[0024] Preferably, an internal thread sleeve is embedded in the beam body end flange plate, and the force bar is arranged perpendicularly to the top surface of the bent cap, and the end of the force bar away from the displacement cylinder is provided with external thread and is screwed with the internal thread sleeve. The force bar is connected with the beam body through the internal thread sleeve, and the connection is convenient and reliable.

[0025] Preferably, two embedded cylinders are provided, which are embedded in the bottom surface of the bent cap corresponding to the flange plates on both sides of the beam body. The seismic performance of the beam body is ensured by two groups of embedded parts in all directions.

[0026] Compared with the prior art, the utility model discloses provide a kind of anti-falling beam embedded part and bridge with it, embedded part is anchored in cap beam top surface, and embedded part is connected with beam body using force transmission rod, under the action of earthquake, earthquake load can be passed to displacement cylinder through force transmission rod, displacement cylinder will be compressed shock-absorbing spring under the action of earthquake load and slide along anchoring, and after the disappearance of earthquake, shock-absorbing spring resets to force displacement cylinder reset to realize the reset of beam body, and the lateral and longitudinal seismic performance of beam body under the action of earthquake is ensured by the arrangement of multiple anchoring, which improves the stability of bridge under earthquake load. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only a part of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0028] Figure 1 The installation structure schematic diagram of the anti-falling beam embedded part provided by the present application is shown in the figure.

[0029] Figure 2 The cross-sectional view of the anti-falling beam embedded part provided by the present application after installation is shown in the figure.

[0030] Figure 3 The cross-sectional view of the anti-falling beam embedded part provided by the present application is shown in the figure.

[0031] Figure 4 The anchor rod arrangement structure schematic diagram provided by the present application is shown in the figure.

[0032] Figure 5 The top view of the anti-falling beam embedded part provided by the present application is shown in the figure.

[0033] Among them,

[0034] 1-cap beam; 2-beam body; 3-embedded cylinder; 4-displacement cylinder; 41-baffle; 42-through hole; 5-anchor rod; 6-shock-absorbing spring; 7-pressing plate; 8-force transmission rod; 9-inner threaded sleeve; 10-flexible sealing gasket. DETAILED DESCRIPTION

[0035] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0036] Embodiment 1:

[0037] Referring to the accompanying drawings Figures 3 to 5 The utility model discloses a kind of anti-falling beam embedded parts, comprising:

[0038] Embedded barrel 3, multiple anchor holes are provided on the circumferential side of embedded barrel 3;

[0039] Displacement barrel 4, displacement barrel 4 is coaxially sleeved in the inner cavity of embedded barrel 3, and its outer circumference is provided with through hole 42 corresponding to multiple anchor holes;

[0040] Anchor rod 5, anchor rod 5 is arranged vertically to the outer wall of embedded barrel 3, and its rod wall is respectively penetrated through anchor hole and through hole 42, one end of anchor rod 5 is slidably contacted with the hole wall of through hole 42 of displacement barrel 4, and the other end is exposed from embedded barrel 3;

[0041] Shock-absorbing spring 6, shock-absorbing spring 6 is sleeved on the rod wall of anchor rod 5, and one end thereof is abutted with the inner wall of embedded barrel 3, and the other end is abutted with the outer wall of displacement barrel 4;

[0042] Force transmission rod 8, one end of force transmission rod 8 is vertically inserted into the inner cavity of displacement barrel 4.

[0043] In the embodiment, when force transmission rod is stressed, force will be transmitted to displacement barrel, displacement barrel can slide along anchor and compress shock-absorbing spring in the direction of force, and the reset of shock-absorbing spring will force displacement barrel and force transmission rod to reset after the disappearance of force.

[0044] In order to further optimize the above technical solution, ensure that force transmission rod slides along displacement barrel while the position of force transmission rod in displacement barrel does not conflict with anchor, the inner cavity of displacement barrel 4 is sequentially separated into fixed cavity and anchor cavity by partition plate 41 from top to bottom, one end of force transmission rod 8 is inserted into fixed cavity, the end of anchor rod 5 away from embedded barrel 3 is inserted into anchor cavity, and force transmission rod 8 and anchor rod 5 are arranged vertically to each other.

[0045] In order to further optimize the above technical solution, improve the connection performance between force transmission rod and displacement barrel, the outer wall of one end of force transmission rod 8 close to displacement barrel 4 is tightly matched with the inner wall of displacement barrel 4 relative to fixed cavity.

[0046] In order to further optimize the above technical solution, improve the sealing performance in displacement barrel and force transmission rod support, and will not affect the sliding effect of force transmission rod along displacement barrel, flexible sealing gasket 10 is embedded between the outer wall of force transmission rod 8 and the inner wall of the top end of embedded barrel 3.

[0047] In the embodiment, anchor rod 5 is provided with four and arranged in array along the circumferential side of embedded barrel 3. Figure 4 And 5As shown, four anchor rods are arranged around the displacement cylinder, and the four anchor rods pass through the embedded cylinder, when the displacement cylinder receives force in a certain direction, the force is decomposed into two directions of transverse and longitudinal directions, and the displacement cylinder slides along the anchor rod in the direction of the greater force to compress the shock absorbing spring.

[0048] In order to further optimize the above technical solution, improve the service life of the displacement cylinder, and ensure that the sliding of the displacement cylinder can effectively compress the shock absorbing spring, a pressing plate 7 is further arranged, the pressing plate 7 is sleeved on the anchor rod 5, one side plate surface of the pressing plate 7 can abut against the outer wall of the displacement cylinder 4, and the other side plate surface is fixed to one end of the shock absorbing spring 6 away from the inner wall of the embedded cylinder 3.

[0049] Embodiment 2:

[0050] The utility model embodiment discloses a kind of bridge, adopt the embedded part in embodiment 1 to improve the anti-seismic performance of bridge, further include bent cap 1 and beam body 2, the top surface of bent cap 1 is fixed with support, and the bottom end surface of beam body 2 is in abutment with the top end surface of support;Embedded cylinder 3 is embedded in the top surface of bent cap 1 relative to the circumferential side of support, and one end of anchor rod 5 away from displacement cylinder 4 is anchored in bent cap 1;One end of force transmission rod 8 away from displacement cylinder 4 is fixed with the bottom surface of beam body 2 end flange plate.

[0051] As Figure 3 As shown, during bent cap construction, according to the installation position of beam body, embedded cylinder is embedded in the top surface of bent cap corresponding to beam body flange plate, the part of anchor rod exposed from embedded cylinder is anchored in bent cap, and the axes of four anchor rods are respectively arranged perpendicular to four side end surfaces of bent cap, one end of force transmission rod is fixed with beam body before beam body installation, force transmission rod is arranged in displacement cylinder when beam body is installed, and is inserted into the cavity in upper portion of displacement cylinder, to complete the installation of beam body and embedded part.

[0052] In order to further optimize the above technical solution, ensure the effective connection between beam body and force transmission rod, internally threaded sleeve 9 is embedded in the end flange plate of beam body 2, and force transmission rod 8 is arranged perpendicular to the top surface of bent cap 1, and externally threaded is formed in one end of force transmission rod 8 away from displacement cylinder 4 and is screwed with internally threaded sleeve 9.

[0053] Under the action of earthquake, when beam body occurs longitudinal or transverse displacement, earthquake load is transmitted to displacement cylinder through force transmission rod, displacement cylinder is anchored and slides in the same direction of maximum force to compress shock absorbing spring under the action of large force, and simultaneously extrudes flexible sealing gasket to make it deform;When earthquake force disappears, the reset of shock absorbing spring forces displacement cylinder to reset, drives force transmission rod and beam body to reset simultaneously, to realize the anti-seismic and self-resetting performance of beam body.

[0054] In order to further optimize the above technical solution, ensure the effective anti-seismic capacity of beam body, two embedded cylinders 3 are arranged, and are respectively embedded in the bottom surface of bent cap 1 corresponding to the flange plate on both sides of beam body 2.

[0055] The various embodiments described in this specification are presented by way of example, and each embodiment is presented for the purpose of conveying the novelty and inventive aspects of the present patent application. Each embodiment is presented in a progressive and explanatory manner, and each embodiment highlights differences from other embodiments. The same or similar parts and / or functions between embodiments are to be understood as mutual references among the embodiments.

[0056] The above description of disclosed embodiments is intended to be illustrative and not restrictive. Many modifications of these embodiments by one having ordinary skill in the art are intended to be within the scope of the following claims. Thus, the present patent application is not to be limited to the embodiments described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fall protection beam anchor, comprising: The utility model relates to a kind of embedded tube and anchor rod, including: Pre-burying barrel (3), multiple anchor holes are opened in the circumferential side of the pre-burying barrel (3); Displacement barrel (4), the inner cavity of the pre-burying barrel (3) is coaxially sleeved, and its outer circumferential opening is provided with corresponding through hole (42) with multiple anchor holes; Anchor rod (5), the outer wall of the pre-burying barrel (3) is arranged vertically, and its rod wall is respectively penetrated through the anchor hole and the through hole (42), the anchor rod (5) one end is opposite the hole wall of the displacement barrel (4) and the through hole (42) sliding abutment, the other end exposes the pre-burying barrel (3); Damping spring (6), the rod wall of the anchor rod (5) is sleeved, and its one end is abutted with the inner wall of the pre-burying barrel (3), and the other end is abutted with the outer wall of the displacement barrel (4); Force transmission rod (8), one end of the force transmission rod (8) is vertically inserted into the inner cavity of the displacement barrel (4).

2. The anti-beam-falling pre-embedded part according to claim 1, characterized in that, The inner cavity of the displacement barrel (4) is sequentially separated into fixed cavity and anchoring cavity by the upper and lower partition plates (41), one end of the force transmission rod (8) is inserted into the fixed cavity, the end of the anchor rod (5) away from the pre-burying barrel (3) is inserted into the anchoring cavity, and the force transmission rod (8) and the anchor rod (5) are arranged vertically.

3. The anti-beam-falling pre-embedded part according to claim 2, characterized in that, The outer wall of the force transmission rod (8) near one end of the displacement barrel (4) is tightly matched with the inner wall of the displacement barrel (4) opposite the fixed cavity.

4. The anti-beam-falling pre-embedded part according to claim 1, characterized in that, The flexible sealing gasket (10) is embedded between the outer wall of the force transmission rod (8) and the inner wall of the top end of the pre-burying barrel (3).

5. The anti-beam fall pre-embedded part according to claim 1, characterized in that, The anchor rod (5) is provided with four rods and is arranged in an array along the circumferential side of the pre-burying barrel (3).

6. The anti-beam fall pre-embedded part according to claim 5, characterized in that, It also includes a pressing plate (7), which is slidably sleeved on the anchor rod (5), and one side plate surface can abut against the outer wall of the displacement barrel (4), and the other side plate surface is fixed with the end of the damping spring (6) away from the inner wall of the pre-burying barrel (3).

7. The anti-beam fall pre-embedded part according to claim 1, characterized in that, The end of the anchor rod (5) away from the displacement barrel (4) is L-shaped, T-shaped or C-shaped.

8. A bridge constructed using the anti-collapse embedded part according to any one of claims 1 to 7, characterized in that, It also includes a cap beam (1) and a beam body (2), the top surface of the cap beam (1) is fixed with a support, the bottom end surface of the beam body (2) abuts against the top end surface of the support; the pre-burying barrel (3) is pre-buried in the top surface of the cap beam (1) opposite the circumferential side of the support, the end of the anchor rod (5) away from the displacement barrel (4) is anchored in the cap beam (1); the end of the force transmission rod (8) away from the displacement barrel (4) is fixed with the bottom surface of the end flange plate of the beam body (2).

9. A bridge according to claim 8, characterised in that The end flange plate of the beam body (2) is pre-buried with an internally threaded sleeve (9), the force transmission rod (8) is arranged vertically to the top surface of the cap beam (1), and the end of the force transmission rod (8) away from the displacement barrel (4) is provided with an external thread and is screwed with the internally threaded sleeve (9).

10. A bridge according to claim 8, wherein The pre-burying barrel (3) is provided with two, and is pre-buried in the bottom surface of the cap beam (1) corresponding to the flange plate on both sides of the beam body (2).

Images