A street lamp and traffic facility foundation suitable for steel bridge deck

Abstract

The utility model discloses a kind of street lamps and traffic facilities foundation suitable for steel bridge surface, the foundation includes top plate, support tube is vertically arranged in the center below top plate, and support tube bottom is equipped with steel bottom plate for being welded with steel bridge surface;Steel bottom plate is circular, and multiple inward recessed grooves for increasing circumference are arranged along the circumference of steel bottom plate.The utility model further discloses a kind of installation structure of street lamps and traffic facilities foundation suitable for steel bridge surface, the installation structure is parallel to top plate and horizontal plane and is connected with the bottom flange of street lamps and traffic facilities above, and steel bottom plate is welded with steel bridge surface.The utility model is simple in structure, can be processed in advance, shorten construction period;It can be directly welded on steel bridge surface, and installation is convenient and fast;Multiple grooves arranged on steel bottom plate increase the length of weld, and connection is stable and reliable;Uniformly bear vertical load, and overall stability is strong;It can be suitable for steel bridge surface of different slope.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge deck road lamp and traffic safety facility installation field, concretely relates to a kind of road lamp and traffic facility foundation suitable for steel bridge deck. BACKGROUND

[0002] Road lamp, traffic facilities such as signal light, signboard etc. are important auxiliary facilities to ensure bridge lighting and traffic safety. The auxiliary facilities foundation is generally fixed on the bridge deck or the side anti-collision guardrail by using concrete foundation. Due to the strong resonance effect of the bridge under the action of vehicle traffic, wind load, etc., the road lamp and traffic facilities foundation on the bridge deck need to have good structural stability. For steel structure bridge, if the traditional concrete foundation is used, shear studs and other connecting parts need to be set to strengthen the connection between steel bridge deck and concrete, and the concrete pouring and curing time is long, which prolongs the construction period and the construction process is complex.

[0003] The invention patent with publication number CN118407455A provides a steel pipe pile road lamp foundation, which can be concentratedly processed in a processing field, does not need to dig soil during on-site installation, uses a pile driver to drive the steel pipe pile into the concrete foundation, and has fast construction speed, but the road lamp foundation is not suitable for steel bridge deck.

[0004] The utility model patent with publication number CN206001411U provides an adjustable road lamp pole foundation device, which includes an upper top plate, a lower steel bottom plate and a middle stand connected between the two, the middle stand side is provided with a plurality of symmetrically distributed rib plates, the lower steel bottom plate is provided with a plurality of strip-shaped bolt grooves, the upper top plate is provided with a plurality of arc-shaped bolt grooves, during installation, the lower steel bottom plate is connected with the original road lamp foundation through the lower bolt grooves and bolts, and the upper top plate is connected with the new road lamp pole through the upper bolt grooves and bolts. The utility model can efficiently and quickly replace the new road lamp pole without excavation and replacement of the original foundation, but the utility model needs the original road lamp foundation on site and is installed by bolt connection, which is not suitable for steel bridge deck without original road lamp foundation. UTILITY MODEL CONTENTS

[0005] The utility model application aims at the above technical deficiencies, provides a kind of road lamp and traffic facilities foundation suitable for steel bridge deck, can be processed in advance, can be directly installed on steel bridge deck, and the foundation is connected with steel bridge deck stably and reliably.

[0006] To achieve the above object, the road lamp and traffic facilities foundation suitable for steel bridge deck provided by the utility model adopts the following technical scheme: The top plate is vertically provided with a support pipe in the center below the top plate, and the bottom of the support pipe is provided with a steel bottom plate for welding with the steel bridge deck; the steel bottom plate is circular, and a plurality of inward recessed grooves for increasing the circumference are arranged along the circumference of the steel bottom plate. By adopting the technical scheme, the foundation can be processed in advance by the processing field before construction; the steel bottom plate is directly welded on the steel bridge deck, which is convenient and fast to install; the plurality of grooves arranged on the steel bottom plate increases the length of the weld between the steel bottom plate and the steel bridge deck, and increases the connection stability of the foundation and the steel bridge deck.

[0007] Preferably, a plurality of bolt holes are arranged on the top plate and matched with the bolt holes of the bottom flange of the street lamp or traffic facility. By adopting the technical scheme, the plurality of bolt holes arranged on the top plate facilitate the installation of the street lamp or traffic facility.

[0008] Further, the bolt holes are strip-shaped and uniformly arranged along the center of the top plate. By adopting the technical scheme, it is convenient to adjust the error during the installation of the street lamp or traffic facility.

[0009] Preferably, a top plate threading hole is arranged in the center of the top plate, the support pipe is a cylindrical hollow structure and is provided with a support pipe threading hole on the side surface, and the support pipe threading hole, the internal space of the support pipe and the top plate threading hole form a communication space for threading. By adopting the technical scheme, the top plate threading hole and the support pipe threading hole can facilitate the threading of the cable of the street lamp or traffic facility, but the top plate threading hole and the support pipe threading hole can be omitted for the traffic facility column which does not need power supply.

[0010] Preferably, a plurality of support plates are arranged on the side surface of the support pipe, the top of the support plate is connected with the top plate, and the bottom of the support plate is connected with the steel bottom plate. By adopting the technical scheme, the support plate and the support steel pipe form a support force transmission structure together, which increases the structural strength of the foundation.

[0011] Further, the support plates are uniformly arranged in a radial manner along the outer periphery of the support pipe. By adopting the technical scheme, the vertical load borne by the foundation is more uniformly distributed.

[0012] Preferably, the grooves of the steel bottom plate are "U"-shaped, and the grooves are uniformly arranged along the circumference of the steel bottom plate. By adopting the technical scheme, the welds are uniformly distributed, which increases the overall stability.

[0013] A mounting structure of a street lamp and traffic facility foundation suitable for a steel bridge deck, the top plate is parallel to the horizontal plane and is connected with the bottom flange of the street lamp and traffic facility above, and the steel bottom plate is welded with the steel bridge deck.

[0014] Preferably, when the steel bridge deck has a slope, the steel base plate is welded to the steel bridge deck, there is an angle between the steel base plate and the axis of the support pipe corresponding to the slope of the steel bridge deck, the top plate is parallel to the horizontal plane, and the support pipe is vertical.

[0015] The beneficial effects achieved by this utility model are: 1. The foundation can be prefabricated at the processing plant before construction, shortening the construction cycle; 2. The steel base plate is directly welded to the steel bridge deck, making installation convenient and quick; 3. The multiple slots on the steel base plate increase the weld length between the steel base plate and the steel bridge deck, making the connection between the foundation and the steel bridge deck more stable and reliable. 4. Because the steel base plate is circular and the slots are evenly distributed, the foundation bears vertical loads evenly and has strong overall stability. 5. By setting an angle between the steel base plate and the axis of the support pipe that corresponds to the slope of the steel bridge deck, the foundation can be adapted to steel bridge decks with different slopes. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model; Fig. 2 This is a top-view structural diagram of the present invention; Fig. 3 This is a partial structural schematic diagram of the steel base plate assembly of this utility model; Among them: 1. Top plate; 11. Top plate through hole; 12. Bolt hole; 2. Support pipe; 21. Support pipe through hole; 3. Support plate; 4. Steel base plate; 5. Weld. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] The following is in conjunction with the appendix Figs. 1-3 The present invention will be described in further detail below.

[0019] like Fig. 1 As shown, a foundation for streetlights and traffic facilities suitable for steel bridge decks includes a top plate 1, which is circular. A support pipe 2 is vertically arranged at the center below the top plate 1. The support pipe 2 is a cylindrical hollow structure. A steel base plate 4 for welding to the steel bridge deck is provided at the bottom of the support pipe 2. The steel base plate 4 is circular and has multiple inwardly recessed slots along its circumference to increase its circumference.

[0020] like Fig. 1 , Fig. 2 As shown, the top plate 1 has multiple bolt holes 12 that mate with the bolt holes of the bottom flanges of streetlights or traffic facilities. The bolt holes 12 are strip-shaped and are evenly distributed radially along the center of the top plate 1. A top plate wiring hole 11 is located at the center of the top plate 1, and a support pipe wiring hole 21 is located on the side of the support pipe 2. The support pipe wiring hole 21, the internal space of the support pipe 2, and the top plate wiring hole 11 form a connecting space for wiring. Multiple support plates 3 are provided around the support pipe 2. The top of the support plates 3 is connected to the top plate 1, and the bottom of the support plates 3 is connected to the steel base plate 4. The support plates 3 are evenly distributed radially along the outer periphery of the support pipe 2.

[0021] like Fig. 3 As shown, the grooves in the steel base plate 4 are U-shaped and are evenly distributed along the circumference of the steel base plate 4. The grooves increase the length of the weld 5.

[0022] Example 1 The top plate 1 is circular, with a diameter of 80 cm and a thickness of 2 cm. The top plate 1 has a cable threading hole 11 and bolt holes 12. The cable threading hole 11 is located at the center of the top plate 1, with a diameter of 10 cm, and is used for threading cables through the bottom of streetlights or traffic facility columns. The bolt holes 12 are strip-shaped, 2.8 cm wide and 6 cm long, with a total of 6 holes, evenly distributed radially along the center of the top plate 1. The strip-shaped bolt holes 12 facilitate adjustment of errors during the installation of streetlights or traffic facility columns.

[0023] The support pipe 2 is vertically installed below the top plate 1, with its axis coinciding with the center of the top plate 1. The support pipe 2 has an outer diameter of 24 cm, a height of 50 cm, and a thickness of 2 cm. Six support plates 3 are evenly distributed around the side of the support pipe 2. The support plates 3 are 2 cm thick, with their tops connected to the top plate 1 and their bottoms connected to the steel base plate 4. Together with the support pipe 2, the support plates 3 form a support and force transmission structure.

[0024] A cable hole 21 is provided on the side of the support pipe 2. The cable hole 21 is 4 cm wide and 14 cm high. The cable hole 11 in the top plate, the internal space of the support pipe 2, and the cable hole 21 form a connecting space to facilitate the passage of street light or traffic facility cables.

[0025] The steel base plate 4 is circular, with a diameter of 80 cm and a thickness of 2 cm. The steel base plate 4 is set below the support pipe 2 and the support plate 3, and the center of the steel base plate 4 coincides with the axis of the support pipe 2. When the steel bridge deck has a slope, an angle corresponding to the slope is set between the axis of the steel base plate 4 and the support pipe 2. At the same time, the lower part of the support plate 3 is set with a bevel according to the angle to ensure that after the steel base plate 4 is welded to the steel bridge deck, the top plate 1 remains horizontal and the support pipe 2 remains vertical.

[0026] In this implementation, the top plate 1, support pipe 2, support plate 3 and steel base plate 4 are all made of steel, and the connections between the top plate 1, support pipe 2, support plate 3 and steel base plate 4 are all fixed by welding.

[0027] The steel base plate 4 has six inwardly recessed "U"-shaped slots evenly arranged along its circumference. These slots create a toothed structure to increase the circumference of the steel base plate 4. Before the slots were installed, the circumference of the steel base plate 4 was 251.3 cm. After the slots were installed, the circumference of the steel base plate 4 was 364.9 cm, which is 45% higher than before. Therefore, after the steel base plate 4 is welded to the steel bridge deck, the weld length of the weld 5 increases by 45%, thereby enhancing the connection strength between the present invention and the steel bridge deck.

[0028] Due to its 360° axisymmetry, a circular foundation can distribute vertical loads radially and evenly downwards. In contrast, a square foundation, for example, exhibits significant stress concentration at its four corners, leading to uneven vertical load distribution and lower stability compared to a circular foundation. In this embodiment, the top plate 1 is circular, the support pipe 2 is cylindrical, and the steel base plate 4 is circular with evenly spaced slots along its circumference, resulting in a more uniform distribution of vertical loads and greater stability.

[0029] In practice, the foundation is first fabricated at the processing yard or on-site. During fabrication, the top plate wiring hole 11 and the support pipe wiring hole 21 are set. The bolt holes 12 are set according to the position of the bottom flange bolt holes of the streetlights or traffic facilities. At the same time, the included angle between the steel base plate 4 and the axis of the support pipe 2 is set according to the slope of the steel bridge deck at the installation location. The bottom of the support pipe 2 and the support plate 3 are cut according to the included angle. The top plate 1, support pipe 2, support plate 3 and steel base plate 4 are welded to form a whole. After the foundation is fabricated, it is transported to the bridge site and welded to the steel bridge deck. After welding, the top plate 1 is parallel to the horizontal line. Then, the streetlights or traffic facilities are installed on the foundation. After aligning the bottom flange bolt holes of the streetlights or traffic facilities with the bolt holes 12 of the foundation, the bolts are tightened to complete the installation of the streetlights or traffic facilities. Finally, the cable is threaded through the connected space formed by the top plate wiring hole 11, the internal space of the support pipe 2 and the support pipe wiring hole 21.

[0030] In some embodiments, traffic facilities do not require power supply, such as signposts that do not require power supply, in which case the top plate wiring hole 11 and the support pipe wiring hole 21 can be omitted.

[0031] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this utility model is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this utility model are defined only by the scope of the claims.

[0032] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and the above structures should all be considered to fall within the protection scope of this utility model.

Claims

1. A foundation for streetlights and traffic facilities suitable for steel bridge decks, characterized in that: Includes a top plate (1), with a support pipe (2) vertically arranged at the center below the top plate (1), and a steel base plate (4) for welding to the steel bridge deck at the bottom of the support pipe (2); the steel base plate (4) is circular, and multiple inwardly recessed slots are provided along the circumference of the steel base plate (4) to increase the circumference.

2. The foundation for streetlights and traffic facilities suitable for steel bridge decks according to claim 1, characterized in that: The top plate (1) is provided with multiple bolt holes (12) that mate with the bolt holes of the bottom flange of the street light or traffic facility.

3. The foundation for streetlights and traffic facilities suitable for steel bridge decks according to claim 2, characterized in that: The bolt holes (12) are strip-shaped and are evenly arranged radially along the center of the top plate (1).

4. The foundation for streetlights and traffic facilities suitable for steel bridge decks according to claim 1, characterized in that: The top plate (1) has a wire hole (11) at its center. The support tube (2) is a cylindrical hollow structure and has a wire hole (21) on its side. The wire hole (21), the internal space of the support tube (2), and the wire hole (11) form a connecting space for wire threading.

5. The foundation for streetlights and traffic facilities suitable for steel bridge decks according to claim 1, characterized in that: The support tube (2) is provided with multiple support plates (3) around its perimeter. The top of the support plate (3) is connected to the top plate (1), and the bottom of the support plate (3) is connected to the steel base plate (4).

6. The foundation for streetlights and traffic facilities suitable for steel bridge decks according to claim 5, characterized in that: The support plate (3) is arranged radially and uniformly along the outer periphery of the support tube (2).

7. The foundation for streetlights and traffic facilities suitable for steel bridge decks according to claim 1, characterized in that: The slots in the steel base plate (4) are U-shaped and are evenly distributed along the circumference of the steel base plate (4).

8. A foundation for streetlights and traffic facilities suitable for steel bridge decks according to any one of claims 1 to 7, characterized in that: The top plate (1) is parallel to the horizontal plane and is connected to the bottom flange of the street light and traffic facilities above. The steel bottom plate (4) is welded to the steel bridge deck.

9. The foundation for streetlights and traffic facilities suitable for steel bridge decks according to claim 8, characterized in that: When the steel bridge deck has a slope, the steel base plate (4) is welded to the steel bridge deck, and there is an angle between the steel base plate (4) and the axis of the support pipe (2) corresponding to the slope of the steel bridge deck, and the top plate (1) is parallel to the horizontal plane, and the support pipe (2) is vertical.

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