Spliced steel-concrete combined trestle plate capable of being recycled

Abstract

According to the returnable assembled steel-concrete combined trestle plate, a steel plate frame and a concrete plate are combined to form a steel-concrete combined structure, the overall strength, the bearing capacity and the durability of the trestle plate are remarkably improved, and compared with a traditional pure steel structure trestle plate, the structure can better resist deformation, the service life is prolonged, and the service life of the trestle plate is prolonged. And meanwhile, the problem that a steel structure is easy to rust is avoided. The trestle plate units are rapidly and stably spliced through matching of the arc-shaped connecting bolts in the arc holes and the countersunk grooves, no complex technology is needed, the field installation efficiency is greatly improved, meanwhile, subsequent disassembly and reassembly are facilitated through the design, turnover use of the trestle plate is achieved, the construction cost is reduced, and the trestle plate is suitable for popularization and application. And through tight connection between the steel-concrete composite structure and the adjacent units, noise and vibration generated when a transportation tool passes through are effectively reduced, and the comfort level of the construction environment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the trestle board technical field, concretely is a kind of assembled steel concrete combined trestle board of turnover use. BACKGROUND

[0002] Trestle board is the plate structure for building temporary pavement, can be laid on the uneven road of construction site, to form the even road that can safely bear transport tool, to improve the subsequent construction efficiency, the existing trestle board is basically made of steel structure, when pavement is laid, just is the trestle board unit component flatly placed, there is no connecting structure between adjacent trestle board, when transport tool passes, it will make the trestle board move and produce noise, and the trestle board made of steel structure itself also has the defects of high cost, low load, easy rust, poor durability etc. SUMMARY

[0003] The utility model discloses a kind of assembled steel concrete combined trestle board of turnover use, adopt the structure of steel plate frame and concrete combination, and connecting structure is arranged between adjacent trestle board unit to assemble, solve the problem in prior art.

[0004] The utility model discloses a kind of assembled steel concrete combined trestle board of turnover use, including the trestle board unit of a plurality of assembled connections, each trestle board unit is equipped with concrete slab, the outer periphery of concrete slab is wrapped with steel plate frame, the section of steel plate frame is angle steel shape, pre-stressed reinforcement in concrete slab is along length direction, the both ends of steel plate frame length direction are all set with the through hole matched with pre-stressed reinforcement, arc-shaped pipe is fixedly arranged on the inner side of steel plate frame, arc hole is opened in steel plate frame and is connected with arc-shaped pipe, sink head groove is opened in concrete slab and is connected with arc-shaped pipe, the diameter of sink head groove is greater than the diameter of arc-shaped pipe, sink head groove and arc hole are located at the both ends of arc-shaped pipe respectively, the arc hole of adjacent trestle board unit is correspondingly set, arc-shaped connecting bolt is installed in the arc hole of both sides trestle board unit with cooperation, the screw head and nut of arc-shaped connecting bolt are located in the sink head groove of adjacent trestle board unit respectively.The steel plate frame includes vertical plate and horizontal plate arranged perpendicularly, arc-shaped pipe is welded and fixed on vertical plate, the through hole and arc hole are all opened on vertical plate, and connecting rib that is embedded into concrete slab is pre-embedded on the inner surface of vertical plate and the upper surface of horizontal plate.The arc-shaped pipe is welded with reinforcing rib between the vertical plate of steel plate frame, and the reinforcing rib is horizontally arranged.The top surface of concrete slab is provided with a plurality of anti-skid stripes arranged at intervals, and each anti-skid stripe is arranged perpendicularly to the pre-stressed reinforcement.Both ends of steel plate frame length direction are provided with a plurality of protrusions arranged at intervals, each through hole is located between two protrusions, and the end portion of pre-stressed reinforcement extending out of the through hole is provided with a truncated end, when adjacent trestle board units are assembled and connected, the end surface of protrusion on both sides of steel plate frame is one-to-one corresponding abutment, and the truncated end is located in the gap between the protrusions.

[0005] The positive effect of the utility model lies in: the utility model discloses a kind of turnable and used assembly type steel-tile combined trestle board, by combining steel frame and concrete slab, form steel-tile combined structure, significantly improve the overall strength, carrying capacity and durability of trestle board, compared with traditional pure steel structure trestle board, the structure can resist deformation more, prolong service life, while avoiding the problem that steel structure is easy to rust.Trestle board unit is realized quickly and stably assembled by the cooperation of arc-shaped connecting bolt in arc hole and countersunk groove, without complex process, greatly improve the installation efficiency on site, at the same time, this design is also convenient for subsequent disassembly and reassembly, realize the turnable and used trestle board, reduce construction cost, by steel-tile combined structure and the close connection between adjacent units, effectively reduce the noise and vibration generated when transport tool passes through, improve the comfort of construction environment. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is the structure schematic diagram of the utility model;

[0007] Figure 2 It is the structure schematic diagram of the utility model;

[0008] Figure 3 It is Figure 1 The enlarged view of the section view of A-A direction in clockwise rotation 90 degrees;

[0009] Figure 4 It is Figure 1 The enlarged view of the section view of B-B direction;

[0010] Figure 5 It is the structure schematic diagram of the utility model;

[0011] Figure 6 It is the structure schematic diagram of the utility model; Figure 5 The enlarged view of the section view of C-C direction in clockwise rotation 90 degrees. DETAILED DESCRIPTION

[0012] The utility model discloses a kind of turnable and used assembly type steel-tile combined trestle board, as shown in Figures 1-4 It is shown, including several assembly connections trestle board unit, each trestle board unit is equipped with concrete slab 2, the outer periphery of concrete slab 2 is wrapped with steel frame 1, using steel-tile combined material, can effectively improve the strength and durability of overall trestle board, compared with traditional pure steel structure trestle board, can also reduce manufacturing cost, reduce self weight, facilitate turnable transport.

[0013] The cross section of the steel frame 1 is in the shape of angle steel, which can form all-around support for the internal concrete slab 2, and can effectively increase the contact area between the concrete slab 2 and the peripheral steel frame 1, and effectively improve the connection strength of the concrete slab 2 and the steel frame 1. In order to improve the tensile performance of the trestle slab itself, the prestressed steel bars 3 along the length direction are arranged in the concrete slab 2. In order to realize the tensioning of the prestressed steel bars 3 in the processing process, the through holes 4 matched with the prestressed steel bars 3 are arranged at the two ends of the steel frame 1 in the length direction.

[0014] In the manufacturing of the above trestle slab unit, the steel frame 1 is placed in the mold, then the steel bars are inserted into the through holes 4, and the tensioning prestress is applied to the steel bars by using a stretching machine or the like mechanism. Then the concrete is poured into the inside of the steel frame 1. After the concrete is solidified, the tensioning of the steel bars is cancelled, and the steel bars are cut off at the position of the through hole 4. Finally, the end of the prestressed steel bar 3 is polished to ensure that the residual part does not protrude out of the through hole 4, that is, the manufacturing of the trestle slab unit is realized.

[0015] In order to realize the assembly connection between the adjacent trestle slab units, the arc-shaped tubes 5 are fixedly arranged on the inner side of the steel frame 1. The arc-shaped tubes 5 are communicated with the arc holes 6 arranged on the steel frame 1. The countersunk grooves 7 communicated with the arc-shaped tubes 5 are arranged on the concrete slab 2. The diameter of the countersunk groove 7 is greater than that of the arc-shaped tube 5. The countersunk groove 7 and the arc hole 6 are respectively arranged at the two ends of the arc-shaped tube 5. The arc holes 6 of the adjacent trestle slab units are correspondingly arranged. The arc-shaped connecting bolts 8 are fittedly arranged in the arc holes 6 of the two-side trestle slab units. The screw head and the nut of the arc-shaped connecting bolt 8 are respectively arranged in the countersunk groove 7 of the adjacent trestle slab units.

[0016] The above connecting structure is respectively arranged at the length direction and the width direction of the trestle slab unit, which can realize the assembly connection of each side of the peripheral of the trestle slab unit, so as to select the assembly connection mode and the assembly area of the trestle slab according to the actual situation of the construction site. The connection mode is fixed connection by using bolts and nuts, which is convenient for construction operation. The arc-shaped connecting bolt 8 is completely arranged in the arc-shaped tube 5 and the countersunk groove 7, and does not protrude out of the concrete slab 2, which can effectively avoid the interference with the walking of the transportation tools on the road surface.

[0017] The steel frame 1 includes the vertical plate and the horizontal plate arranged perpendicularly. The arc-shaped tube 5 is welded and fixed on the vertical plate. The through hole 4 and the arc hole 6 are arranged on the vertical plate. Further, in order to enhance the connection strength between the steel frame 1 and the concrete slab 2, the connecting bars 9 extending into the concrete slab 2 are embedded on the inner surface of the vertical plate and the upper surface of the horizontal plate.

[0018] When the arc-shaped connecting bolt 8 is installed in the arc-shaped pipe 5 and the nut is screwed, if the strength of the arc-shaped pipe 5 itself is not enough to cause deformation, the arc-shaped pipe 5 will be displaced relative to the concrete slab 2, causing the concrete slab 2 to be broken, and affecting the use performance of the whole trestle slab.

[0019] Further, in order to ensure that the formed road surface has certain anti-skid performance after assembly, and to ensure the normal travel of the transportation tools thereon, the top surface of the concrete slab 2 is provided with a plurality of anti-skid stripes 10 arranged at intervals, and each anti-skid stripe 10 is arranged perpendicularly to the prestressed steel bar 3. The arrangement of the anti-skid stripes 10 not only increases the friction of the walking surface, but also improves the use safety of the trestle slab.

[0020] In the production of the trestle slab unit, due to the arrangement of the internal prestressed steel bar 3, the end portion of the protruding prestressed steel bar 3 needs to be cut after production, and the end portion of the prestressed steel bar 3 will still have residues after cutting, so that the adjacent trestle slab units cannot be closely fitted, and the end portion of the prestressed steel bar 3 needs to be polished subsequently to ensure that the prestressed steel bar 3 does not protrude from the steel frame 1. The subsequent polishing operation is relatively complex, and each prestressed steel bar 3 needs to be polished individually according to the actual cutting condition of the end portion of the prestressed steel bar 3, which is time-consuming and laborious.

[0021] To solve the above problems, as shown in Figure 5 and Figure 6 , a plurality of protrusions 13 are arranged at intervals at both ends of the steel frame 1 in the length direction, each through hole 4 is located between the two protrusions 13, and the end portion of the prestressed steel bar 3 protruding from the through hole 4 has a cut end 12. When the adjacent trestle slab units are assembled and connected, the end faces of the protrusions 13 on the two steel frames 1 correspondingly abut, and the cut end 12 is located in the gap between the protrusions 13. The arrangement of the above structure cancels the polishing operation of the end portion of the prestressed steel bar 3, and due to the arrangement of the protrusions 13, the adjacent trestle slab units are still in contact and assembled and connected, and the gap between the trestle slab units is small, which does not affect the normal travel of the transportation tools on the laid road.

[0022] The recyclable assembled steel-concrete combined trestle slab of the utility model not only improves the structural strength, durability and safety, but also optimizes the assembly efficiency, reduces the noise and vibration, the trestle slab design is easy to standardize production, reduces the manufacturing cost, and due to the recyclable use, reduces the resource waste, meets the concept of green construction, has lower material cost, and has economy and environmental protection, which is an important innovation in the technical field of trestle slab, and is easy to popularize and apply.

[0023] The technical scheme of the utility model is not limited to the scope of the embodiments described in the utility model. The technical content not described in the utility model is well-known technology.

Claims

1. A reusable, modular reinforced concrete trestle deck, characterized in that: The application relates to a trestle plate unit which is assembled and connected, and is characterized in that the trestle plate unit is provided with a concrete plate (2), the outer periphery of the concrete plate (2) is wrapped with a steel frame (1), the cross section of the steel frame (1) is in the shape of an angle steel, prestressed steel bars (3) are arranged in the concrete plate (2) along the length direction, the two ends of the steel frame (1) in the length direction are provided with through holes (4) matched with the prestressed steel bars (3), arc-shaped tubes (5) are fixedly arranged on the inner side of the steel frame (1), arc-shaped holes (6) are formed in the steel frame (1) and are communicated with the arc-shaped tubes (5), sunken grooves (7) are formed in the concrete plate (2) and are communicated with the arc-shaped tubes (5), the diameter of the sunken grooves (7) is larger than that of the arc-shaped tubes (5), the sunken grooves (7) and the arc-shaped holes (6) are respectively located at the two ends of the arc-shaped tubes (5), the arc-shaped holes (6) of adjacent trestle plate units are correspondingly arranged, arc-shaped connecting bolts (8) are fitted and arranged in the arc-shaped holes (6) of the two side trestle plate units, and the screw heads and the nuts of the arc-shaped connecting bolts (8) are respectively located in the sunken grooves (7) of the adjacent trestle plate units.

2. A recyclable, prefabricated, steel-concrete composite trestle slab according to claim 1, characterized in that: The steel frame (1) comprises vertical plates and horizontal plates which are arranged perpendicularly, the arc-shaped tubes (5) are welded and fixed on the vertical plates, the through holes (4) and the arc-shaped holes (6) are formed in the vertical plates, and connecting ribs (9) which are embedded into the concrete plate (2) are arranged on the inner surface of the vertical plates and the upper surface of the horizontal plates.

3. A reusable, bolted, steel-concrete composite trestle slab according to claim 2, characterized in that: The arc-shaped tubes (5) and the vertical plates of the steel frame (1) are welded with reinforcing ribs (11), and the reinforcing ribs (11) are horizontally arranged.

4. A turnable and reusable assembled steel-concrete combined trestle board according to claim 1, characterized in that: The top surface of the concrete plate (2) is provided with a plurality of anti-skid stripes (10) which are arranged at intervals, and the anti-skid stripes (10) are arranged perpendicularly to the prestressed steel bars (3).

5. A recyclable, prefabricated, steel-concrete composite trestle slab according to claim 1, characterized in that: The two ends of the steel frame (1) in the length direction are provided with a plurality of protrusions (13) which are arranged at intervals, the through holes (4) are located between the two protrusions (13), the end of the prestressed steel bar (3) which extends out of the through hole (4) is provided with a truncated end (12), when the adjacent trestle plate units are assembled and connected, the end surfaces of the protrusions (13) on the two steel frames (1) are one-to-one correspondingly abutted, and the truncated end (12) is located in the gap between the protrusions (13).

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