CN111560796A - Assembly type mass spring floating plate system inter-plate connecting assembly - Google Patents

Abstract

An inter-plate connecting component of an assembly type mass spring floating plate system is used for remarkably improving the bending resistance of a splicing plate seam and ensuring the vibration reduction performance and the driving stability. Coupling assembling sets up in the splice joint department of prefabricated track board in left side and the prefabricated track board in right side, this coupling assembling is at the prefabricated track board in left side, set up along the width direction interval on the prefabricated track board terminal surface in right side, set up one deck or multilayer along thickness direction, each coupling assembling includes a set of corresponding left side link frame, the right side link frame, the left side link frame, the prefabricated track board in left side is buried respectively to the right side link frame, the vertical tip of the prefabricated track board in right side and form the anchor with it and be connected, the left side link frame, the corresponding preceding lateral wall of right side link frame passes through fastener and connects as an organic wholely.

Description

An assembled mass spring floating board system board-to-board connection assembly

technical field

The invention belongs to the field of rail engineering, and in particular relates to an inter-board connection component of a mass spring floating plate system for rail transit.

Background technique

There is a lot of demand for vibration reduction in rail transit construction. The mass spring floating plate system uses elastic supports to support the track plate to achieve vibration reduction. It is widely used because of its excellent vibration reduction performance, such as steel spring floating plate system, rubber Spring floating plate system etc. Drawing on the concept of prefabricated building construction, prefabricating track slabs in factories and then on-site installation is the direction of rail transit development, which can significantly improve the quality and construction progress of track projects.

Due to the limitation of hoisting and transportation, the length of the prefabricated floating plate in the mass spring floating plate system is generally 3-6m, and the length of the cast-in-place floating plate is generally 20-30m. The shortening of the length of the floating plate makes the vibration reduction performance and driving stability of the mass spring floating plate system deteriorate. Strengthening the connection between the prefabricated short floating plates is the key. At present, the width of the prefabricated floating short plate is generally 30mm, and the plates are connected by shear hinges. The shear hinges are composed of steel rods and sleeves. After the rod is inserted into the sleeve, it can move longitudinally and provide vertical shear resistance, but the bending resistance is weak. There are two ways to install the shear hinge in the section of the floating plate and on the upper surface. The former cannot be repaired and replaced, and the latter affects the evacuation of the track bed.

Rail transit is embodied in a sinuous linear project. In the curved section, the end faces of the track slab on both sides of the seam of the floating track slab are not parallel. In addition to the moment, the adaptability to the curve should also be considered. Although the use of wet joints can solve the splicing problem of floating short boards, the wet joints cannot bear the running load of rail engineering construction vehicles in a short time, which restricts the construction progress. Comprehensive curve adaptability and construction needs, the mortise and tenon joints and grouting sleeve connections widely used in prefabricated buildings are not suitable. Therefore, it is necessary to invent a new type of inter-board connection structure of the assembled mass spring floating plate system with clear force transmission, guaranteed cross-section bending resistance and strong curve adaptability.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an inter-board connection component of a prefabricated mass spring floating plate system, so as to significantly improve the bending resistance of the spliced plate seam and ensure the vibration damping performance and driving stability.

The technical scheme adopted by the present invention to solve the above-mentioned technical problems is as follows:

The inter-board connection assembly of an assembled mass spring floating plate system of the present invention is arranged at the splicing seam of the left prefabricated track plate and the right prefabricated track plate, and is characterized in that: the connection assembly is on the left prefabricated track plate, The end face of the right prefabricated track board is arranged at intervals along the width direction, and one or more layers are arranged along the thickness direction, and each connecting component includes a set of corresponding left connecting frames, right connecting frames, left connecting frames and right connecting frames. The frames are respectively embedded in the longitudinal ends of the left prefabricated track plate and the right prefabricated track plate and form an anchoring connection therewith, and the front side walls corresponding to the left connecting frame and the right connecting frame are connected together by a fastening device.

A single-layer or multi-layer pressure-bearing backing plate is arranged between the front side walls corresponding to the left connecting frame and the right connecting frame in the splicing seam, and the pressure-bearing backing plate is fixedly installed on the left side by the fastening device. box, connected to the box on the right.

The left connecting frame and the right connecting frame have parallel front side walls and rear side walls, between which is a triangular or polygonal cavity in plane projection, and the axis of the cavity is perpendicular to the left prefabricated track plate and the right prefabricated track. plate surface; the rear side walls of the left connecting frame and the right connecting frame are respectively welded with left anchors extending backwards, right anchors, and channels for installing the fastening device are arranged at intervals on the front side walls. hole.

The beneficial effects of the present invention are mainly reflected in the following aspects:

1. The connection between the prefabricated floating plates is realized through the fastening device, which greatly improves the bending resistance of the joints, and improves the vibration reduction performance and driving stability of the mass spring floating plate system;

2. Through the cooperation of the fastening mechanism and the through holes on the joint surface of the connecting frame, the assembly error between the prefabricated panels can be well eliminated, and the assembly of the track panels in the curved section can be well adapted;

3. The entire connection component is fully mechanically connected, without using grouting material and cast-in-place concrete, which can ensure the uninterrupted operation of rail construction vehicles.

Description of drawings

This manual includes the following five drawings:

1 is a schematic plan view of the arrangement of the inter-board connection components of an assembled mass spring floating plate system according to the present invention;

FIG. 2 is a schematic plan view of an inter-board connection assembly of an assembled mass spring floating plate system of the present invention;

FIG. 3 is a schematic elevational view of an inter-board connection assembly of an assembled mass spring floating plate system according to the present invention;

4 is a schematic diagram of the fixed connection of the fastening mechanism in the inter-board connection assembly of an assembled mass spring floating plate system according to the present invention;

5 is a schematic diagram of the fixed connection of the fastening mechanism in the inter-board connection assembly of an assembled mass spring floating plate system according to the present invention;

The structure and corresponding marks in the figure: left prefabricated track plate 1, right prefabricated track plate 2, vibration isolator 3, left connecting frame 41, right connecting frame 42, left anchor 51, right anchor 52 , Fastening device 6 , pressure-bearing backing plate 7 , cover plate 8 , bolts 61 , nuts 62 , washers 63 , leaf springs 64 .

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

Referring to Figure 1, the left prefabricated track slab 1 and the right prefabricated track slab 2 are factory-prefabricated reinforced concrete track slabs, which are supported by a vibration isolator 3 embedded in it. The vibration isolator 3 is a steel spring vibration isolator, Rubber spring isolators or other elastic supports with preset stiffness and damping. Under the action of the train load, the left prefabricated track slab 1 and the right prefabricated track slab 2 generally have a vertical displacement of 3 to 5 mm and are accompanied by bending deformation. When the prefabricated panels are assembled in the straight section, the two sides of the splicing seam between the left prefabricated track plate 1 and the right prefabricated track plate 2 are two parallel end faces, and the two end faces form an angle with each other in the curved section. In the prior art, a shear hinge is used to connect the left prefabricated track plate 1 and the right prefabricated track plate 2. The shear hinge is composed of steel rods and sleeves. In the side prefabricated track plate 1 and the right prefabricated track plate 2, the steel rod can move longitudinally after being inserted into the sleeve, and at the same time provides vertical shear resistance, but the bending resistance is very weak. There are two ways to install the shear hinge in the section of the floating plate and on the upper surface. The former cannot be repaired and replaced, and the latter affects the evacuation of the track bed. Moreover, the curve adaptability of shear hinges is very poor. Usually, wet joints can be used to solve the problem of splicing of floating short plates, but wet joints cannot bear the running load of rail engineering construction vehicles in a short time, which restricts the construction progress.

Referring to FIG. 1 , an inter-board connection component of an assembled mass spring floating board system of the present invention is arranged at the splicing seam of the left prefabricated track board 1 and the right prefabricated track board 2 . The connecting assemblies are arranged at intervals along the width direction on the end faces of the left prefabricated track plate 1 and the right prefabricated track plate 2, and are provided with one or more layers along the thickness direction. Each connecting assembly includes a set of corresponding left connecting frames 41, The right connecting frame 42, the left connecting frame 41 and the right connecting frame 42 are respectively embedded in the longitudinal ends of the left prefabricated track plate 1 and the right prefabricated track plate 2 and form an anchor connection therewith. The front side walls corresponding to the side connecting frames 42 are connected together by the fastening device 6 . Referring to Figures 2 and 3, the connection between the prefabricated floating plates is realized through the fastening device 6, which greatly improves the bending resistance of the joint, and improves the vibration reduction performance and driving stability of the mass spring floating plate system; The cooperation of the through holes on the joint surfaces of the left connecting frame 41 and the right connecting frame 42 can well eliminate the assembly error between the prefabricated panels, and can be well adapted to the assembly of track panels in curved sections. The entire connection assembly is fully mechanically connected, without using grouting material and cast-in-place concrete, which can ensure the uninterrupted operation of rail construction vehicles.

Referring to Figures 1 to 3, in order to ensure that a connection structure with shear resistance and bending resistance is formed after the prefabricated slabs are assembled, a pressure-bearing backing plate 7 is provided between the left prefabricated track slab 1 and the right prefabricated track slab 2. For large pressure, the pressure-bearing backing plate 7 is a single-layer or multi-layer steel plate or a plastic backing plate. A single-layer or multi-layer pressure-bearing backing plate 7 is arranged between the front side walls corresponding to the left connecting frame 41 and the right connecting frame 42 in the splicing seam, and the pressure-bearing backing plate 7 is fixed by the fastening device 6 Installed on the left connecting frame 41 and the right connecting frame 42 . When the geometrical relationship between the end faces on both sides of the splicing seam between the left prefabricated track plate 1 and the right prefabricated track plate 2 is reasonably controlled, and the end faces of the left prefabricated track plate 1 and the right prefabricated track plate 2 can be closely abutted, the pressure bearing can be eliminated. The setting of the backing plate 7.

2 and 3, the left connecting frame 41 and the right connecting frame 42 have parallel front side walls and rear side walls, between which is a triangular or polygonal cavity in plane projection, and the axis of the cavity is perpendicular to the The left prefabricated track board 1 and the right prefabricated track board 2 are covered. The left side anchors 51 and the right anchors 52 extending backward are respectively welded on the rear side walls of the left side connection frame 41 and the right side connection frame 42 . through hole. The left anchor 51 and the right anchor 52 pass through one or a plurality of steel bars arranged at intervals, or an anchor structure integrally cast with the left anchor 51 and the right anchor 52 . The surfaces of the left anchor 51, the right anchor 52, the left connecting frame 41 and the right connecting frame 42 should be taken effective anti-corrosion measures, and the side walls of the left connecting frame 41 and the right connecting frame 42 can also be provided with concave-convex teeth Slot, strengthen the occlusal connection with the left prefabricated track slab 1 and the right prefabricated track slab 2 concrete.

Referring to FIG. 3 , when the plate thicknesses of the left prefabricated track plate 1 and the right prefabricated track plate 2 are relatively small, the connecting assembly is provided with one layer along the thickness direction. When the plate thickness of the left prefabricated track plate 1 and the right prefabricated track plate 2 is relatively large, two or more layers of connecting components are arranged along the thickness direction. When setting up the multi-layer connection components, the top-level connection components and the bottom-layer connection components should be as close as possible to the top and bottom surfaces of the left prefabricated track board 1 and the right prefabricated track board 2, and the multi-layer connection components should ensure that the left connection frames 41, The inner cavity of the right connection frame 42 is vertically aligned and penetrated. The left connection frame 41 and the right connection frame 42 are provided with a cover plate 8 at the upper port of the inner cavity, and the cover plate 8 is fixedly installed on the left connection by bolts. Frame 41 and the right side connecting frame 42 on the frame body.

The pressure-bearing backing plate 7 is any one of a steel plate, a wooden plate, a rubber plate, a plastic plate or a rubber-metal composite plate with predetermined rigidity and elasticity. Through hole of the fastening device 6 .

4 and 5 , the fastening device 6 includes a complete set of bolts 61 , nuts 62 and washers 63 , and an elastic member arranged at one end of the bolt 61 . The elastic member adopts a leaf spring 64 or an elastic washer 63 . Since the positive bending moment of the bottom of the floating slab is much greater than the negative bending moment of the top under the action of the train load, when arranging the fastening device 6, the number and diameter of the bolts 61 on the bottom side of the slab can be set differently than those on the top side of the slab.

Referring to Figure 4, the length of the single left prefabricated track plate 1 and the right prefabricated track plate 2 is generally 3-6m. In order to ensure the vibration damping performance of the mass spring system and the driving stability, the floating short plate needs to be spliced into a length of 20-50m The long board, the internal splicing seam of the long board does not have a telescopic function. At this time, the fastening device 6 includes a complete set of bolts 61, nuts 62 and washers 63. The number of washers 63 is single or multiple. loose function. The bolts 61 pass through the left connecting frame 41 , the pressure-bearing backing plate 7 , and the right connecting frame 4 in sequence, and then the washers 63 and nuts 62 are installed in sequence, thereby completing the installation of the fastening mechanism 6 . In order to ensure the normal installation of the bolts 61 , the inner cavities of the left connecting frame 41 , the pressure-bearing backing plate 7 , and the right connecting frame 4 should have sufficient accommodating space. In order to reduce the number of parts, the fastening mechanism 6 can also use rivets or rivets. Referring to FIG. 5 , when the left prefabricated track plate 1 and the right prefabricated track plate 2 are spliced into a long plate, a retractable seam needs to be set between the long plates. The pressure pad 7 is replaced with a wood board, a rubber board, or a rubber-metal composite board with a compression function.

The above is only to illustrate some principles of the inter-board connection assembly of an assembled mass spring floating plate system of the present invention, and it is not intended to limit the present invention to the specific structure and scope of application shown and described. All corresponding modifications and equivalents that may be utilized belong to the scope of the patent application of the present invention.

Claims (7)

1. The utility model provides a coupling assembling between assembled quality spring floating plate system board sets up in the splice joint department of prefabricated track board in left side (1) and prefabricated track board in right side (2), characterized by: the connecting assembly is arranged on the end face of a left prefabricated track board (1) and a right prefabricated track board (2) at intervals along the width direction, one layer or multiple layers are arranged along the thickness direction, each connecting assembly comprises a group of corresponding left connecting frames (41) and right connecting frames (42), the left connecting frames (41) and the right connecting frames (42) are respectively embedded into the left prefabricated track board (1), the longitudinal end part of the right prefabricated track board (2) is connected with the vertical end part in an anchoring mode, and the corresponding front side walls of the left connecting frames (41) and the right connecting frames (42) are connected into a whole through fastening devices (6).

2. The assembled mass spring floating plate system plate-to-plate connection assembly of claim 1, wherein: a single-layer or multi-layer pressure-bearing cushion plate (7) is arranged between the corresponding front side walls of the left connecting frame (41) and the right connecting frame (42) in a splicing seam, and the pressure-bearing cushion plate (7) is fixedly installed on the left connecting frame (41) and the right connecting frame (42) through a fastening device (6).

3. The assembled mass spring floating plate system plate-to-plate connection assembly of claim 2, wherein: the left connecting frame (41) and the right connecting frame (42) are provided with a front side wall and a rear side wall which are parallel, a triangular or polygonal inner cavity is formed between the front side wall and the rear side wall, the plane projection of the inner cavity is a triangular or polygonal inner cavity, and the axis of the inner cavity is vertical to the plate surfaces of the left prefabricated track plate (1) and the right prefabricated track plate (2); the rear side walls of the left connecting frame (41) and the right connecting frame (42) are respectively welded with a left anchoring body (51) and a right anchoring body (52) which extend backwards, and through holes for installing the fastening devices (6) are arranged on the front side wall at intervals.

4. The assembled mass spring floating plate system plate-to-plate connection assembly of claim 3, wherein: the left side anchoring body (51) and the right side anchoring body (52) are one or a plurality of steel bars arranged at intervals, or the anchoring structure integrally cast with the left side anchoring body (51) and the right side anchoring body (52).

5. The assembled mass spring floating plate system plate-to-plate connection assembly of claim 3, wherein: and the left connecting frame (41) and the right connecting frame (42) are provided with cover plates (8) at the upper ports of the inner cavities, and the cover plates (8) are fixedly installed on the left connecting frame (41) and the right connecting frame (42) frame bodies through bolts.

6. The assembled mass spring floating plate system plate-to-plate connection assembly of claim 3, wherein: the pressure bearing backing plate (7) is any one of an elastic steel plate, a wood plate, a rubber plate, a plastic plate or a rubber metal composite plate with preset rigidity, the vertical projection of the pressure bearing backing plate is rectangular or trapezoidal, and a through hole for installing the fastening device (6) is formed in the plate surface.

7. The assembled mass spring floating plate system plate-to-plate connection assembly of claim 1, wherein: the fastening device (6) comprises a set of a bolt (61), a nut (62) and a washer (63), and an elastic member arranged at one end of the bolt (61), wherein the elastic member is a plate spring (64) or a washer (63) with elasticity.

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