CN212335762U - Assembled bamboo wood bridge span structure - Google Patents

Abstract

The utility model discloses an assembled bamboo wooden bridge span structure, which comprises a bottom steel plate (1), a top steel plate (2), a rubber support seat (3), a steel filling plate (4), a main beam (5), a diaphragm plate (6), angle steel (7), a bridge deck (8), bolts (9) and self-tapping screws (10), the steel bridge is characterized in that rubber support seats (3) are arranged between a bottom steel plate (1) and a top steel plate (2) at equal intervals, the lower portion of the bottom steel plate (1) is connected with a bridge pier or a bridge abutment of a bridge, a steel filling plate (4) is arranged at the upper portion of the top steel plate (2) at equal intervals, notches are reserved at the end portion of a main beam (5), the main beam (5) is connected with the steel filling plate (4) through bolts (9), one end of angle steel (7) is connected with the main beam (5) through self-tapping screws (10), one end of the angle steel (7) is connected with a transverse partition plate (6) through the bolts (9), and a bridge deck plate (8) is fixed. The utility model discloses simple structure, construction convenience are fit for being applied to in the short bridge of striding.

Description

Assembled bamboo wood bridge span structure

Technical Field

The utility model relates to a wooden bridge span structure of assembled bamboo, especially a decking of bamboo timber, rubber support and steel combination belongs to civil engineering bamboo structure bridge field.

Background

The rapid development of population and economy puts a great pressure on the environment on which human lives, and the problem of how to effectively utilize limited resources, save the resources as much as possible and reduce the environmental pollution is a concern of human society. As a renewable resource, wood has the advantages of light weight, attractive appearance and the like, and has been widely applied to the civil engineering industry since ancient times. Bamboo wood is similar to wood, but has the advantages of shorter growth cycle, higher strength, better toughness, more abundant resources and the like, so the state strongly advocates replacing wood with bamboo. At present, bamboo and wood materials are mostly used for decoration and furniture manufacture in China, and how to fully exert the excellent mechanical properties of the bamboo and wood materials is a difficult problem in civil engineering application at present.

The modern bamboo-wood structure bridge is an energy-saving and environment-friendly building, and is already applied to county and rural highway bridges with small and medium span and low traffic volume in western regions; urban pedestrian overpasses and landscape bridges in scenic spots; bridge in disaster relief or combat readiness; bridges in coastal or cold areas; repair of reinforced old bridges, etc.

On one hand, because the traffic volume of the places is not large, the requirements on the bearing capacity and the span of the bridge are not high, but the requirements on the earthquake resistance are high, and on the other hand, because the urbanization speed is high, the infrastructure of the village is usually dismantled before the service life, so that the bridge of the village, the temporary bridge after disaster and the like need to be conveniently dismantled and the recovery rate is high. The reinforced concrete bridge has high bearing capacity but large dead weight, so that the anti-seismic performance is insufficient, and the reinforced concrete bridge is not coordinated with the green environment of parks, schools or villages. Traditional stone arch bridge, the stone quality is big, and the cost of transportation is high, needs large-scale hoisting equipment in the installation, and the construction is inconvenient. The traditional wood structure bridge is attractive in appearance and convenient to construct, but the bearing capacity is too low, so that the traditional wood structure bridge is frequently used as a pedestrian bridge, and vehicles cannot pass through the traditional wood structure bridge.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve just lies in: the utility model provides a weak point to little span bridges in places such as park, school, rural area, the utility model provides a construction convenience, bearing capacity are big, the pleasing to the eye assembled wooden bridge of bamboo of appearance.

In order to solve the technical problem, the utility model provides a solution does: the utility model provides an assembled wooden bridge span structure of bamboo, including end steel sheet, top steel sheet, rubber support seat, the steel filler plate, the girder, the cross slab, the angle steel, the decking, bolt and self tapping screw, the rubber support seat is arranged to the equidistance between its characterized in that end steel sheet and the top steel sheet, end steel sheet lower part is connected with the pier or the abutment of bridge, the steel filler plate is arranged to top steel sheet upper portion equidistance, the notch is reserved to the girder tip, the girder passes through bolted connection with the steel filler plate, angle steel one end is gone into the girder through the self tapping screw nail, one end passes through the bolt and links to each other with the cross slab, the decking passes through self tapping screw fixation.

The basic principle of the utility model is as follows: the bottom steel plate is positioned at the bottom of the bridge deck plate and connects the bridge deck plate with the bridge pier or abutment of the bridge; the rubber support seat is positioned between the bottom steel plate and the top steel plate, bears the stress vertically transferred by the bridge deck and improves the lateral force resistance of the whole bridge; the top steel plate is used for enhancing the transverse connection of the bridge deck; the steel filling plates are vertically welded on the top steel plate at equal intervals and are connected with the main beam through bolts; the main beam is made of bamboo laminated wood, bears longitudinal bending moment and transmits upper load downwards; the transverse partition plate and the main beam are connected into a whole through angle steel, so that the integral stability of the bridge deck is enhanced; the bridge deck is connected with the main beam nail and plays a role in bearing upper load. The steel has high strength, high rigidity, good bamboo toughness, light weight, high strength and beautiful appearance, and the two materials are organically combined through the bolts and the self-tapping screws, so that the comprehensive performance of the bridge deck is improved.

The bottom steel plate, the top steel plate and the steel filler plate are made of steel with the material grade not lower than Q235.

The thickness of the bottom steel plate is not less than 2cm, and the lower part of the bottom steel plate is fixed on a bridge pier or a bridge abutment of a bridge.

The thickness of the top steel plate is not less than 2cm, and the steel filler plate is welded on the upper portion at equal intervals.

The thickness of the steel filling plate is not less than 1cm, and bolt holes are symmetrically reserved on the steel filling plate along the center line.

The girder equidistance is arranged on the top steel plate, and the girder selects recombined bamboo or bamboo laminated wood for use, and the moisture content is not more than 12%.

The two ends of the main beam are provided with grooves and connected with the steel filling plate through bolts, and the splicing seam at the joint of the main beam is positioned on the central line of the steel filling plate.

The diaphragm plate and the bridge deck plate are made of laminated wood, recombined bamboo, bamboo laminated wood and the like, the water content is not more than 12%, and the surfaces of the diaphragm plate and the bridge deck plate are subjected to waterproof and anticorrosive treatment.

One end of the angle steel is screwed into the main beam through a self-tapping screw, one end of the angle steel is connected with the angle steel on the other side of the diaphragm plate through a bolt, and four corners of each side of the diaphragm plate are respectively provided with one angle steel.

The diameter of the bolt is smaller than that of the bolt hole by about 1mm, the surfaces of the angle steel, the bolt and the self-tapping screw are galvanized, and the grade of steel used is not lower than Q235.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) compare in common wooden decking, the bearing capacity of the wooden bridge span structure of assembled bamboo improves by a wide margin, and the span is bigger, can pass the small-size vehicle.

(2) Compared with a reinforced concrete bridge deck, the assembled bamboo-wood bridge span structure has the advantages of small self weight, good anti-seismic performance, environment-friendly materials, elegant appearance and coordination with the surrounding green environment.

(3) The utility model belongs to the assembly type structure, all components are all prefabricated at the mill, but the large-scale production, and production efficiency is high.

(4) All components are connected by bolts and self-tapping screws, so that the construction difficulty is low, the construction period is short, and the required manpower is less. When the use mission is finished, the disassembly is convenient, and the recovery and utilization rate is high.

(5) The maintenance is convenient, the maintenance and the reinforcement can be carried out by replacing the component, and the service life is long.

Description of the drawings:

the drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention.

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic drawing of the extension of the present invention

Fig. 3 is a front view of the present invention

In the figure: 1. bottom steel plate, 2 top steel plate, 3 rubber support, 4 steel filler plate, 5 main beam, 6 diaphragm plate, 7 angle steel, 8 bridge deck, 9 bolt, 10 self-tapping screw

The specific implementation mode is as follows:

in order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in figures 1-3, the utility model provides an assembled wooden bridge span of bamboo structure, including end steel sheet, top steel sheet, rubber support, steel filler plate, girder, cross slab, angle steel, decking, bolt and self tapping screw. The steel plate, the top steel plate and the steel filler plate are made of steel with the material grade not lower than Q235. The main beam is made of 3-3 years old large-diameter moso bamboos serving as raw materials, and the recombined bamboos or bamboo laminated wood is formed through industrial processing, and the water content is not more than 12%. The diaphragm plate and the bridge deck plate are made of laminated wood, recombined bamboo or bamboo laminated wood, the water content is not more than 12%, and the surfaces are subjected to waterproof and antiseptic treatment. The surfaces of the angle steel, the bolt and the self-tapping screw are galvanized, and the grade of the steel is not lower than Q235. Bolt holes need to be reserved at the bolt connection positions of the components, and the diameter of each bolt hole is about 1mm larger than that of each bolt.

In the actual construction process, attention needs to be paid to the fact that the splicing seam at the joint of the main beam is located in the center of the steel filling plate, a gasket and a nut need to be used in a matched mode when a bolt is used, and a rubber cushion block is arranged at the contact position of a component to prevent local pressure damage.

Example 1: the bottom steel plate, the top steel plate and the steel filling plate are made of Q345 steel. The dimensions of the bottom steel plate and the top steel plate are 20mm multiplied by 200mm multiplied by 4880 mm. The rubber support is a cylinder with the radius of 18mm and is arranged between the bottom steel plate and the top steel plate at equal intervals. The size of the steel filling plate is 350mm multiplied by 200mm multiplied by 10mm, the steel filling plate is vertically welded on the top steel plate at equal intervals, 1 row of bolt holes are symmetrically reserved along two sides of a central line, and each row is 3. The transverse clapboard is made of Europe pine plate with the size of 500mm × 97mm and the thickness of 40 mm. The angle steel thickness is 10mm, and the girder is gone into through self tapping screw nail to one end, and one end passes through the bolt and links to each other with the angle steel of cross slab opposite side, and the angle steel is respectively arranged in the four corners of each side of cross slab. The size of the bridge deck plate is 2440mm multiplied by 1220mm multiplied by 28mm, and the bridge deck plate is connected with the main beam through self-tapping screws. The surfaces of the angle steel, the bolt and the self-tapping screw are galvanized, and the grade of the steel used is Q235.

Claims (10)

1. An assembled bamboo-wood bridge span structure comprises a bottom steel plate (1), a top steel plate (2), a rubber support seat (3), a steel filler plate (4), a main beam (5), a diaphragm plate (6), angle steel (7), a bridge deck (8), bolts (9) and self-tapping screws (10), the steel bridge is characterized in that rubber support seats (3) are arranged between a bottom steel plate (1) and a top steel plate (2) at equal intervals, the lower portion of the bottom steel plate (1) is connected with a bridge pier or a bridge abutment of a bridge, a steel filling plate (4) is arranged at the upper portion of the top steel plate (2) at equal intervals, notches are reserved at the end portion of a main beam (5), the main beam (5) is connected with the steel filling plate (4) through bolts (9), one end of angle steel (7) is connected with the main beam (5) through self-tapping screws (10), one end of the angle steel (7) is connected with a transverse partition plate (6) through the bolts (9), and a bridge deck plate (8) is fixed.

2. An assembled bamboo-wood bridge span structure as claimed in claim 1, wherein the bottom steel plate (1), the top steel plate (2) and the steel filler plate (4) are made of steel with a material grade not lower than Q235.

3. An assembled bamboo-wood bridge span structure as claimed in claim 1, wherein the thickness of the bottom steel plate (1) is not less than 2cm, and the lower portion is fixed to a bridge pier or a bridge abutment of a bridge.

4. An assembled bamboo-wood bridge span structure according to claim 1, wherein the thickness of the top steel plate (2) is not less than 2cm, and the steel filler plates (4) are welded at the upper part at equal intervals.

5. An assembled bamboo-wood bridge span structure as claimed in claim 1, wherein the thickness of the steel filling plate (4) is not less than 1cm, and bolt holes are symmetrically reserved on the steel filling plate (4) along the center line.

6. An assembled bamboo-wood bridge span structure as claimed in claim 1, wherein the main beams (5) are equidistantly arranged on the top steel plate (2), the main beams (5) are made of recombined bamboo or bamboo laminated wood, and the water content is not more than 12%.

7. An assembled bamboo-wood bridge span structure as claimed in claim 1, wherein the end of the main beam (5) is slotted and connected with the steel filling plate (4) through bolts (9), and the splicing seam at the joint of the main beam (5) is located at the center line of the steel filling plate (4).

8. An assembled bamboo-wood bridge span structure as claimed in claim 1, wherein the diaphragm plate (6) and the bridge deck (8) are made of laminated wood, recombined bamboo or bamboo-laminated wood, the water content is not more than 12%, and the surface is subjected to waterproof and antiseptic treatment.

9. An assembled bamboo-wood bridge span structure as claimed in claim 1, wherein one end of the angle steel (7) is nailed into the main beam (5) through a tapping screw (10), and one end is connected with the angle steel (7) on the other side of the diaphragm (6) through a bolt (9), and the four corners of each side of the diaphragm (6) are respectively provided with one angle steel (7).

10. An assembled bamboo-wood bridge span structure as defined in claim 1, wherein the bolt (9) is smaller than the bolt hole by about 1mm in diameter, and the surfaces of the angle steel (7), the bolt (9) and the tapping screw (10) are galvanized with a grade of steel not lower than Q235.

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