Wharf large-span trestle

Abstract

The utility model discloses a large-span trestle bridge for a wharf. The large-span trestle bridge comprises a truss, the steel pipe pile is arranged between the wharf wall and the small wharf platform, and a mounting table is arranged at the top; one end of a truss is arranged on the wharf wall, and the other end is arranged on the mounting table; one end of the other truss is arranged on the small wharf platform, the other end of the truss is arranged on the mounting table, and the ends, on the mounting table, of the two trusses are mutually connected; the grating plate is arranged on the two top chord members, and a grab rail is arranged on the upper surface of the grating plate; the expansion plate is arranged on the lower surface of the end, away from the steel pipe pile, of the top chord member; and the mounting bolt vertically penetrates through the telescopic groove and is screwed into the wharf wall or the small wharf platform. The cross section of the trestle is triangular, the windward area is small, sidewise bending is effectively avoided, meanwhile, the trestle is in an inverted triangle shape, the strength of an upper aisle tread is effectively improved, construction materials are saved, and the problem that the middle of the trestle is bent downwards due to large deflection of a large-span trestle is solved.

Description

Technical Field

[0001] The utility model relates to the field of offshore engineering auxiliary devices, and particularly relates to a large-span trestle bridge for a wharf. Background Art

[0002] In marine engineering facilities such as shipyards, wharves, and comprehensive ports, due to reasons such as draft depth, it is often necessary to set up an independent small wharf platform at a relatively long distance from the shore as a berth for mooring ships and for personnel to get on and off. The distance between the wharf and the small wharf platform ranges from more than ten meters to dozens of meters. If a concrete wharf or a steel pipe pile wharf is used to connect the two, the overall construction cost will be relatively high, greatly increasing the construction cost; if a floating pontoon passage is used, the service life of the floating pontoon will be relatively short due to long-term impact and erosion by seawater. Therefore, a steel structure trestle bridge is often selected as the passage for personnel to enter and exit.

[0003] According to the traditional design concept of offshore engineering trestle bridges, this passage usually adopts a steel structure with a rectangular cross-section. The rectangular cross-section can basically meet the requirements for small spans, but for large-span situations, the self-weight of the rectangular cross-section is large, which will sharply increase the cross-section height, resulting in problems such as too large overall dimensions and too high cost of the trestle bridge. At the same time, the windward area of the rectangular cross-section is much larger than that of the triangular cross-section, and the wind resistance also increases. When the sea wind is relatively strong, there is a possibility of lateral bending of the large-span trestle bridge. In addition, for a large-span trestle bridge, due to the large overall span, the deflection of the trestle bridge is large, and the middle part is prone to bending downward due to its own gravity, posing certain safety hazards. Content of the Utility Model

[0004] The purpose of the utility model is to provide a large-span trestle bridge for a wharf to solve the problems of too large overall dimensions of a steel structure trestle bridge with a rectangular cross-section in the prior art under large-span situations, and the problem of lateral bending caused by the large windward area and increased wind resistance of the steel structure trestle bridge with a rectangular cross-section.

[0005] To solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A large-span trestle bridge for a wharf, comprising:

[0007] A truss, which is a triangular prism structure and includes two top chord members and one bottom chord member, and the three are connected to each other by connecting rods; the top chord member is longer than the bottom chord member;

[0008] Steel pipe piles, which are arranged between the wharf wall and the small wharf platform, and an installation platform is provided at the top;

[0009] One end of a truss is arranged on the wharf wall, and the other end is arranged on the installation platform; one end of another truss is arranged on the small wharf platform, and the other end is arranged on the installation platform, and the ends of the two trusses on the installation platform are connected to each other;

[0010] The grating plate is arranged on two top chord bars, and a handrail bar is provided above it.

[0011] The expansion plate is arranged on the lower surface of the end of the top chord bar far from the steel pipe pile, and a telescopic groove is arranged in the middle along the axial direction of the truss.

[0012] The installation bolt vertically penetrates the telescopic groove and is screwed into the wharf wall or the small wharf platform.

[0013] Particularly, the small wharf platform and the wharf wall are both provided with steps for stepping onto the grating plate.

[0014] Particularly, a T-shaped connecting plate is arranged at the end of the top chord bar near the installation platform, and the web of the T-shaped connecting plate is arranged along the axial direction of the top chord bar; a through-pulling groove is also arranged on the web, and the two trusses are connected to each other through a through-pulling bolt penetrating the through-pulling groove.

[0015] Particularly, an installation plate is further arranged on the lower surface of the end of the top chord bar near the installation platform, and is fixedly connected to the installation platform through the installation holes on the installation plate and the fixing bolts passing through the installation holes.

[0016] Particularly, a number of inclined web members are also arranged between the top chord bar and the bottom chord bar, and the web members are symmetrically arranged on both sides of the connecting rod.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects: The cross-sectional shape of the utility model is triangular, with a small windward area, effectively avoiding side bending. At the same time, the trestle adopts an inverted triangle, effectively increasing the strength of the upper aisle tread surface. In addition, steel pipe piles are arranged in the middle to divide the long-span trestle into two sections, which can solve the problem of the middle of the long-span trestle bending downward due to large deflection. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the device of the utility model.

[0019] Figure 2 It is a schematic front view structural diagram of the device of the utility model.

[0020] Figure 3 It is a schematic side view structural diagram of the device of the utility model.

[0021] Figure 4 For Figure 1 The top view structural diagram at position A in

[0022] Figure 5 For Figure 1 The top view structural diagram at position B in

[0023] The interpretations of the reference numerals in the figure are as follows: truss—1; top chord—2; bottom chord—3; connecting rod—4; steel pipe pile—5; installation platform—6; grating plate—7; handrail—8; expansion plate—9; expansion slot—10; installation bolt—11; ladder step—12; T-shaped connecting plate—13; tie bolt—14; mounting plate—15; fixing bolt—16; web member—17. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought about.

[0025] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a long-span trestle on a wharf includes:

[0026] Truss 1, which is a triangular prism structure, includes two top chords 2 and one bottom chord 3, and the three are connected to each other by connecting rods 4; the top chord 2 is longer than the bottom chord 3;

[0027] Steel pipe pile 5, which is arranged between the wharf wall and the small wharf platform, and an installation platform 6 is provided at the top;

[0028] One end of a truss 1 is arranged on the wharf wall, and the other end is arranged on the installation platform 6; one end of the other truss 1 is arranged on the small wharf platform, and the other end is arranged on the installation platform 6, and the ends of the two trusses 1 on the installation platform 6 are connected to each other;

[0029] Grating plate 7, which is arranged on the two top chords 2, and a handrail 8 is provided above;

[0030] Expansion plate 9, which is arranged on the lower surface of the end of the top chord 2 away from the steel pipe pile 5, and an expansion slot 10 arranged along the axial direction of the truss 1 is provided in the middle;

[0031] Installation bolt 11, which vertically penetrates the expansion slot 10 and is screwed into the wharf wall or the small wharf platform.

[0032] In the present utility model, the truss 1 is composed of two top chord bars 2, one bottom chord bar 3 and several connecting bars 4, and forms an inverted triangular prism structure with a horizontal top surface. The top chord bars 2 and the bottom chord bar 3 are the main load-bearing components, effectively enhancing the overall stability of the device through the triangular prism structure. A grating plate 7 is laid on the top surface as a walking path, and the handrail bar 8 is provided to prevent people from stepping empty. The steel pipe pile 5 is fixed on the seabed to provide auxiliary support for the trusses at both ends. The two trusses 1 are respectively placed starting from the wharf wall and the small wharf platform, and the other ends are placed on the installation platform 6 of the steel pipe pile 5, reducing the deflection of the steel structure trestle and increasing the stability of the device. The expansion plate 6 is provided with a telescopic groove 10 in the middle, which is used to cooperate with the installation bolt 11 to limit the end of the truss 1, and at the same time absorb the thermal deformation of the steel structure trestle, acting as a expansion joint to prevent damage to the overall steel structure caused by thermal expansion and contraction. The overall device of the present utility model is set as a triangular prism structure with a pointed angle downward and a horizontal top surface, thereby effectively increasing the overall stability of the device. At the same time, the windward area of the steel structure trestle is reduced, thereby reducing wind resistance, improving the wind resistance ability, avoiding side bending caused by lateral sea breeze, and also avoiding the problem of excessive deflection of the steel structure trestle due to a large span resulting in central subsidence. It can also effectively reduce the construction material cost and improve the economic benefits.

[0033] As a preferred embodiment, the small wharf platform and the wharf wall are both provided with steps 12 for stepping onto the grating plate 7.

[0034] In this embodiment, by providing the steps 12 as the steps for going up and down the grating plate 7, it is avoided that the staff kicks the top chord bar 2 or the grating plate 7 when walking up and down the trestle, increasing the usability of the device of the present utility model.

[0035] As a preferred embodiment, a T-shaped connecting plate 13 is provided at the end of the top chord bar 2 near the installation platform 6. The web of the T-shaped connecting plate 13 is arranged along the axis direction of the top chord bar 2; a through-pulling groove is also provided on the web, and the two trusses 1 are connected to each other through a through-pulling bolt 14 penetrating the through-pulling groove.

[0036] In this embodiment, as Figure 5 shown, a specific connection method of the top chord bars 2 of the two trusses 1 is provided. Specifically, the top flange of the T-shaped connecting plate 13 is fixedly connected to the end of the top chord bar 2, and the web is in the same direction as the axis of the top chord bar 2, so that the web is used as the connecting plate. The webs of the T-shaped connecting plates 13 of the top chord bars 2 of the two trusses 1 on both sides of the steel pipe pile 5 overlap each other, and the T-shaped connecting plates 13 are connected into one body through the through-pulling bolts penetrating the two webs, thereby realizing the fixed connection of the two trusses 1.

[0037] As a preferred embodiment, an installation plate 15 is further provided on the lower surface of the end of the top chord 2 close to one end of the installation table 6, and is fixedly connected to the installation table 6 through the installation holes on the installation plate 15 and the fixing bolts 16 passing through the installation holes.

[0038] This embodiment provides an installation structure. Through the cooperation of the installation plate 15 and the fixing bolts 16, the end of the top chord 2 of the truss 1 is firmly fixed on the installation table 6, thereby realizing the fixation of the steel structure trestle and preventing the overall sliding of the steel structure trestle.

[0039] As a preferred embodiment, a number of inclined web members 17 are further provided between the top chord 2 and the bottom chord 3, and the web members 17 are symmetrically arranged on both sides of the connecting rod 4.

[0040] In this embodiment, by providing the web members 17, multiple connecting rods 4 are connected, enhancing the stiffness of the truss 1 and further enhancing the overall firmness of the truss 1. At the same time, a claw-shaped reinforcing rod is formed by the web members 17 and the connecting rods 4 to replace the plate structure, further reducing the windward area and wind resistance.

[0041] The "connection" and "fixation" mentioned in the description of the present utility model can be fixed connection, processing and forming, welding, or mechanical connection. Understand the specific meanings of the above terms in the present utility model according to the specific situation.

[0042] In the description of the present utility model, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying a specific orientation that the device or element must have. Therefore, it cannot be understood as a limitation to the present utility model.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A large-span trestle for a wharf, characterized in that, Comprising: A truss (1), having a triangular prism structure, includes two top chord members (2) and one bottom chord member (3), and the three are interconnected by connecting rods (4); the top chord member (2) is longer than the bottom chord member (3). Steel pipe piles (5) are arranged between the wharf wall and the small wharf platform, and an installation platform (6) is provided at the top. One end of a truss (1) is arranged on the wharf wall, and the other end is arranged on the installation platform (6); one end of the other truss (1) is arranged on the small wharf platform, and the other end is arranged on the installation platform (6), and the ends of the two trusses (1) on the installation platform (6) are interconnected. Grid plates (7) are arranged on the two top chord members (2), and handrail rods (8) are provided above. An expansion plate (9) is arranged on the lower surface of the end of the top chord member (2) far from the steel pipe pile (5), and a telescopic groove (10) arranged along the axial direction of the truss (1) is provided in the middle. Installation bolts (11) vertically penetrate through the telescopic groove (10) and are screwed into the wharf wall or the small wharf platform.

2. The long-span trestle of a wharf according to claim 1, characterized in that, The small wharf platform and the wharf wall are both provided with steps (12) for stepping onto the grid plate (7).

3. The long-span trestle of a wharf according to claim 1, characterized in that A T-shaped connecting plate (13) is provided at the end of the top chord member (2) near the installation platform (6), and the web of the T-shaped connecting plate (13) is arranged along the axial direction of the top chord member (2); a through-pulling groove is also provided on the web, and the two trusses (1) are interconnected by through-pulling bolts (14) penetrating through the through-pulling groove.

4. A long-span trestle for a wharf according to claim 1, characterized in that An installation plate (15) is further provided on the lower surface of the end of the top chord member (2) near the installation platform (6), and is fixedly connected to the installation platform (6) through the installation holes on the installation plate (15) and fixing bolts (16) passing through the installation holes.

5. A large-span trestle for a wharf according to claim 1, characterized in that, A number of inclined web members (17) are further arranged between the top chord member (2) and the bottom chord member (3), and the web members (17) are symmetrically arranged on both sides of the connecting rod (4).

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