Bionic telescopic device for rapid construction and installation method thereof

Abstract

The present invention relates to a bionic telescopic device for rapid construction and an installation method thereof. The device comprises a comb plate, a groove steel box, a displacement system and an embedded component from top to bottom, which are symmetrically arranged on both sides of the expansion joint; the outer end of the comb plate is provided with a transversely penetrating arc groove, the inner end is a longitudinal tooth comb, the middle of each tooth of the comb plate on one side is provided with a longitudinal strip groove, and the corresponding position of each tooth of the comb plate on the other side is provided with a protrusion, the tooth combs of the two comb plates on both sides of the expansion joint are arranged crosswise and oppositely, and the protrusions are embedded in the strip groove to form a whole; the outer end of the groove steel box is a boss, and the inner end is a horizontal plane, and the inner side of the boss is provided with a transversely penetrating arc groove corresponding to the arc groove of the outer end of the comb plate, and the arc groove of the comb plate is embedded in the arc groove of the groove steel box and can rotate around the groove axis. The present invention connects the comb plate and the groove steel box through the arc groove to form a simulated joint structure, thereby realizing flexible vertical displacement.

Description

Technical Field

[0001] The invention belongs to the field of bridges, and in particular relates to a bionic telescopic device for rapid construction and an installation method thereof. Background Art

[0002] The expansion device is an important component of the highway bridge pavement. It is mainly used to adapt to the expansion and contraction displacement of the bridge caused by the temperature expansion and contraction of the bridge, the shrinkage and creep of concrete and prestressed concrete bridges, and the expansion and contraction displacement of the bridge beam structure under load, so as to ensure the safety and comfort of vehicles passing on the bridge.

[0003] The expansion device of a highway bridge directly bears the repeated impact of wheel loads in the bridge structure and is exposed to the atmosphere for a long time. The use environment is relatively harsh, and it is the most vulnerable and difficult to repair part of the bridge structure. Any slight defect or deficiency in the design and construction of the expansion device of the bridge will cause its early damage, which not only directly makes passers-by feel uncomfortable and lack of security, but sometimes even affects the normal use of the bridge structure. The bridge maintenance and management department has to carry out early repairs or even replace it in advance, causing varying degrees of economic losses and adverse social impacts. The expansion device of the bridge is installed in the expansion gap area reserved at the end of the bridge. Since the expansion gap position is a key part of the bridge structure where the force is concentrated and complex and changeable, high requirements are placed on the safety, performance, service life, appearance quality, etc. of the expansion device of the bridge.

[0004] Although the existing expansion joints are relatively mature in application and relevant product standards have been formulated, the research on a complete set of expansion joints that can adapt to large displacements in areas with long-term humidity and heat and under intensive loads is still a blank. Ordinary expansion joints are easily damaged, which significantly reduces the safety and performance of bridges, increases the cost of bridge maintenance, and restricts the full play of the role of bridges as key facilities for highway transportation. Summary of the invention

[0005] The purpose of the present invention is to provide a bionic telescopic device with rapid construction and an installation method thereof, wherein a comb plate and a grooved steel box are connected by arc grooves to form a simulated joint structure and realize flexible vertical displacement.

[0006] The technical solution adopted by the present invention is:

[0007] The bionic telescopic device for rapid construction is characterized by:

[0008] The device comprises, from top to bottom, a comb plate, a grooved steel box, a displacement system and embedded components, which are symmetrically arranged on both sides of the expansion joint;

[0009] The outer end of the comb plate is provided with a transversely penetrating arc groove, the inner end is a longitudinal tooth comb, the middle of each tooth of the comb plate on one side is provided with a longitudinal strip groove, and the corresponding position of each tooth of the comb plate on the other side is provided with a protrusion, the tooth combs of the two comb plates on both sides of the expansion joint are arranged crosswise and oppositely, and the protrusions are embedded in the strip grooves to form a whole;

[0010] The outer end of the groove-shaped steel box is a boss, and the inner end is a horizontal plane. The inner side of the boss is provided with a transversely penetrating arc groove corresponding to the arc groove at the outer end of the comb plate. The arc groove of the comb plate is embedded in the arc groove of the groove-shaped steel box and can rotate around the groove axis.

[0011] The embedded components include embedded steel plates and embedded steel bars;

[0012] The embedded steel plate is a transverse channel steel, and U-shaped embedded steel bars are welded to the outer side and bottom. The embedded steel bars extend into the beam body and are cast as one piece with the beam body.

[0013] The displacement system is composed of vulcanized steel plates and elastic materials, which are embedded in the grooves of the embedded steel plates.

[0014] The displacement system is arranged in horizontal blocks.

[0015] A vertical positioning stud is arranged at the bottom surface of the groove of the embedded steel plate, and an opening is arranged at the corresponding position of the displacement system. The positioning stud is inserted into the opening corresponding to the displacement system, and the top is fixed by bolts.

[0016] A vertical positioning stud is arranged at the bottom surface of the groove of the embedded steel plate, an enlarged end is arranged at the top of the positioning stud, and a groove with the same shape as the positioning stud is arranged at the corresponding position of the displacement system, which is fixed by means of a snap buckle.

[0017] A shock-absorbing washer with a corresponding shape is arranged between the arc groove of the comb plate and the arc clamping groove of the grooved steel box.

[0018] A limit block is arranged at the transverse outer end of the comb plate.

[0019] The installation method of the bionic telescopic device with rapid construction is characterized by:

[0020] The following steps are involved:

[0021] Step 1: pre-weld the embedded steel plate and embedded steel bar into one piece, set the whole piece at the notch of the beam end, and cast it into one piece with the beam body after positioning;

[0022] Step 2: Insert the through hole of the displacement system from top to bottom along the positioning studs of the embedded steel plate;

[0023] Step 3: Repeat steps 1 to 2 at the opposite beam end;

[0024] Step 4: Insert the arc groove side of the comb plate along the side of the grooved steel box, and insert it into the arc groove of the grooved steel box to form a whole for standby use;

[0025] Step 5: Place the two trough steel boxes on the displacement system on both sides of the beam end, and ensure that the comb teeth on both sides are staggered;

[0026] Step 6: Lift the comb plate pre-installed on the top of the trough steel box, and screw the connecting bolts from the top of the trough steel box to connect it to the displacement system;

[0027] Step 7: Push the comb plate on one side horizontally, and the protrusion will be embedded in the strip groove to connect into a whole.

[0028] After the comb plate on one side is pushed horizontally, the remaining space at the horizontal outer end of the comb plate is installed into the limiting block.

[0029] The present invention has the following advantages:

[0030] (1) Good durability

[0031] The connection between the comb plate structure and the grooved steel box is inspired by the joint bionic structure. There are no connecting bolts on the overall module structure, which greatly reduces the number of vulnerable parts and has good durability.

[0032] (2) Good safety

[0033] The tooth ends are connected as a whole by pins and designed with slope and arc transitions, which avoids the warping of teeth caused by vertical displacement and reduces the danger of vehicle passage.

[0034] (3) Large displacement

[0035] Through the special design of displacement system and waterproof system, the 23mm vertical displacement required by this project can be achieved;

[0036] (4) Driving comfort

[0037] The upper structure is a comb plate structure, which avoids the jumping caused by the modular telescopic device steel, improves driving comfort and reduces noise;

[0038] (5) Rapid construction

[0039] The overall telescopic device has a modular design. During installation, the overall segments are assembled and cast as a whole, which realizes rapid installation and construction. The surface of the modular comb plate telescopic device realizes bolt-free connection, which reduces the number of wearing parts and ensures reliable connection. The modular design is conducive to the maintenance and replacement of the telescopic device in the later stage. There is no need to interrupt traffic, and the segments can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is an elevation view of the maximum telescopic amount of the present invention.

[0041] Figure 2 It is a plan view of the maximum telescopic amount of the present invention.

[0042] Figure 3 It is the elevation view of the minimum telescopic amount of the present invention.

[0043] Figure 4 It is a plan view of the minimum telescopic amount of the present invention.

[0044] Figure 5 This is the elevation drawing of the trough steel box.

[0045] Figure 6 It is the plan view of the trough steel box.

[0046] Figure 7 It is a schematic diagram of the fixing method of the displacement system.

[0047] Figure 8 It is a schematic diagram of comb plate matching.

[0048] Fig. 9 for Figure 8 Middle II cross-section.

[0049] Fig.10 It is an elevation view of the installation process of the present invention.

[0050] Fig.11 It is a plan view of the installation process of the present invention.

[0051] In the figure: 1- comb plate, 2- groove steel box, 3- displacement system, 4- embedded steel plate, 5- embedded steel bar, 6- shock-absorbing washer, 7- cast-in-place concrete, 8- bolt, 9- buckle, 10- positioning stud, 11- strip groove, 12- protrusion, 13- limit block. DETAILED DESCRIPTION

[0052] The present invention is described in detail below in conjunction with specific implementation modes.

[0053] The present invention relates to a bionic telescopic device for rapid construction. The device comprises a comb plate 1, a groove steel box 2, a displacement system 3 and an embedded component from top to bottom, which are symmetrically arranged on both sides of the expansion joint; the outer end of the comb plate 1 is provided with a transversely penetrating arc groove, and the inner end is a longitudinal tooth comb, and the shape of the teeth can be rectangular, tooth-shaped, triangular, etc. A longitudinal strip groove 11 is arranged in the middle of each tooth of the comb plate 1 on one side, and a protrusion 12 is arranged at the corresponding position of each tooth of the comb plate 1 on the other side. The tooth combs of the two comb plates 1 on both sides of the expansion joint are arranged crosswise and oppositely, and the protrusion 12 is inserted into the strip groove 11 to form a whole. The groove steel box 2 is a variable cross-section structure, the outer end is a boss, and the inner end is a horizontal plane. The inner side of the boss is provided with a transversely penetrating arc groove corresponding to the arc groove at the outer end of the comb plate 1, and a slope and arc transition is performed. The arc groove of the comb plate 1 is inserted into the arc groove of the groove steel box 2 and can rotate around the groove axis.

[0054] The embedded components include embedded steel plates 4 and embedded steel bars 5; the embedded steel plates 4 are transverse channel steels, with U-shaped embedded steel bars 5 welded to the outer side and bottom surfaces, the embedded steel bars 5 extend into the beam body, and are cast into one piece with the beam body.

[0055] The displacement system 3 is composed of a steel plate and an elastic material laminated and vulcanized, and is embedded in the groove of the embedded steel plate 4. The elastic material can be rubber, polyurethane, composite material, etc. The displacement system 3 is arranged in blocks transversely.

[0056] The displacement system 3 is fixed in two ways: 1. A vertical positioning stud 10 is provided on the bottom surface of the groove of the embedded steel plate 4, which is fixed by welding. An opening is provided at the corresponding position of the displacement system 3. The positioning stud 10 is inserted into the corresponding opening of the displacement system 3, and the top is fixed by bolts 8. 1. A vertical positioning stud 10 is provided on the bottom surface of the groove of the embedded steel plate 4, which is fixed by welding. An enlarged end is provided on the top of the positioning stud 10. A groove with the same shape as the positioning stud 10 is provided at the corresponding position of the displacement system 3, which is fixed by snap-fit.

[0057] A shock-absorbing washer 6 of a corresponding shape is arranged between the arc groove of the comb plate 1 and the arc groove of the grooved steel box 2, and can be a modified polytetrafluoroethylene plate, a polytetrafluoroethylene slide plate, etc.

[0058] The installation method of the above-mentioned rapid construction bionic telescopic device comprises the following steps:

[0059] Step 1: pre-weld the embedded steel plate 4 and the embedded steel bar 5 into one piece, and set them as a whole at the notch of the beam end, and cast them into one piece with the beam body after positioning;

[0060] Step 2: Insert the through hole of the displacement system 3 along the positioning stud 10 of the embedded steel plate 4 from top to bottom;

[0061] Step 3: Repeat steps 1 to 2 at the opposite beam end;

[0062] Step 4: Insert the arc groove side of the comb plate 1 along the side of the grooved steel box 2, and insert it into the arc groove of the grooved steel box 2 to form a whole for standby use;

[0063] Step 5: Place two trough steel boxes 2 on the displacement system 3 on both sides of the beam end, and ensure that the comb teeth on both sides are staggered;

[0064] Step 6: Lift the comb plate 1 pre-installed on the top of the trough steel box 2, and screw the connecting bolts from the top of the trough steel box 2 to connect it to the displacement system 3;

[0065] Step 7: Push the comb plate 1 on one side horizontally, and the protrusion 12 is inserted into the strip groove 11 to connect them into a whole.

[0066] After the comb plate 1 on one side is pushed horizontally, the remaining space at the horizontal outer end of the comb plate 1 is installed into the limiting block 13.

[0067] The content of the present invention is not limited to the embodiments listed, and any equivalent changes made to the technical solution of the present invention by ordinary technicians in this field after reading the description of the present invention are covered by the claims of the present invention.

Claims

1. Rapid construction bionic telescopic device, characterized by: The device comprises, from top to bottom, a comb plate (1), a grooved steel box (2), a displacement system (3) and embedded components, which are symmetrically arranged on both sides of the expansion joint; The outer end of the comb plate (1) is provided with a transversely penetrating arc groove, the inner end is a longitudinal tooth comb, the shape of the teeth is rectangular, tooth-shaped or triangular, a longitudinal strip groove (11) is provided in the middle of each tooth of the comb plate (1) on one side, and a protrusion (12) is provided at a corresponding position of each tooth of the comb plate (1) on the other side. The tooth combs of the two comb plates (1) on both sides of the expansion joint are arranged crosswise and oppositely, and the protrusion (12) is embedded in the strip groove (11) to form a whole. The outer end of the grooved steel box (2) is a boss, and the inner end is a horizontal plane. The inner side of the boss is provided with a transversely penetrating arc-shaped groove corresponding to the arc-shaped groove at the outer end of the comb plate (1). The arc-shaped groove of the comb plate (1) is embedded in the arc-shaped groove of the grooved steel box (2) and can rotate around the groove axis.

2. The bionic telescopic device for rapid construction according to claim 1 is characterized in that: The embedded components include embedded steel plates (4) and embedded steel bars (5); The embedded steel plate (4) is a transverse channel steel, and U-shaped embedded steel bars (5) are welded to the outer side and the bottom. The embedded steel bars (5) extend into the beam body and are cast into one piece with the beam body.

3. The bionic telescopic device for rapid construction according to claim 2 is characterized in that: The displacement system (3) is composed of a steel plate and an elastic material laminated and vulcanized, and is embedded in the groove of the embedded steel plate (4).

4. The bionic telescopic device for rapid construction according to claim 3 is characterized in that: The displacement system (3) is arranged in horizontal blocks.

5. The bionic telescopic device for rapid construction according to claim 4 is characterized in that: A vertical positioning stud (10) is provided on the bottom surface of the groove of the embedded steel plate (4), and an opening is provided at a corresponding position of the displacement system (3). The positioning stud (10) is inserted into the corresponding opening of the displacement system (3) and is fixed at the top by a bolt (8).

6. The bionic telescopic device for rapid construction according to claim 4 is characterized in that: A vertical positioning stud (10) is provided on the bottom surface of the groove of the embedded steel plate (4), an enlarged end is provided on the top of the positioning stud (10), and a groove having the same shape as the positioning stud (10) is provided at a corresponding position of the displacement system (3), which is fixed by means of a snap-fit.

7. The bionic telescopic device for rapid construction according to claim 5 or 6, characterized in that: A shock-absorbing washer (6) of a corresponding shape is provided between the arc-shaped groove of the comb plate (1) and the arc-shaped clamping groove of the groove-shaped steel box (2).

8. The bionic telescopic device for rapid construction according to claim 7 is characterized in that: A limit block (13) is provided at the transverse outer end of the comb plate (1).

9. The installation method of the rapid construction bionic telescopic device according to claim 7 is characterized by: The following steps are involved: Step 1: pre-welding the embedded steel plate (4) and the embedded steel bar (5) into one piece, arranging the whole piece at the notch at the end of the beam, and pre-casting the same with the beam body after positioning; Step 2: Insert the through hole of the displacement system (3) from top to bottom along the positioning stud (10) of the embedded steel plate (4); Step 3: Repeat steps 1 to 2 at the opposite end of the beam; Step 4: Insert the arc-shaped groove side of the comb plate (1) along the side of the grooved steel box (2) and insert it into the arc-shaped groove of the grooved steel box (2) to form a whole for standby use; Step 5: Place two trough-shaped steel boxes (2) on the displacement systems (3) on both sides of the beam ends relative to each other, and ensure that the comb teeth on both sides are arranged in a staggered manner; Step 6: Lift the comb plate (1) pre-installed on the top of the trough steel box (2), and screw the connecting bolts from the top of the trough steel box (2) to connect it to the displacement system (3); Step 7: Push the comb plate (1) on one side horizontally, and the protrusion (12) is inserted into the strip groove (11) to form a whole.

10. The installation method of the rapid construction bionic telescopic device according to claim 9 is characterized in that: After the comb plate (1) on one side is pushed horizontally, the remaining space at the horizontal outer end of the comb plate (1) is installed into the limiting block (13).

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