CN219653491U - Steel construction abutment suitable for steel trestle - Google Patents

Abstract

The utility model relates to a steel structure bridge abutment suitable for a steel trestle, which comprises two rows of steel pipe piles which are arranged in the transverse direction of the bridge, wherein one row of steel pipe piles is a bench-back steel pipe pile, the steel pipe piles are tightly close to roadbed filling, the top elevation is flush with the top surface of the roadbed filling, a retaining plate is welded between the adjacent bench-back steel pipe piles, and the other row of steel pipe piles are pedestal steel pipe piles and are positioned below the bridge abutment; and welding connecting beams between each back steel pipe pile and the pedestal steel pipe piles opposite to the back steel pipe piles along the bridge, wherein the top surfaces of the connecting beams and the tops of the pedestal steel pipe piles are respectively transversely bridged to erect lower distribution beams, and the elevation of the top surface of the lower distribution beams is consistent with the elevation of the bottom of the bailey beam of the steel trestle. The utility model has low construction cost, and the material can be reused after the abutment is dismantled.

Description

Steel construction abutment suitable for steel trestle

Technical Field

The utility model belongs to the technical field of bridge construction, relates to a steel trestle structure erected during construction of a bridge in water, and particularly relates to a steel structure abutment suitable for the steel trestle.

Background

The abutment is a structure for connecting the bridge head and the roadbed. As shown in fig. 1, the bridge abutment of a general bridge generally comprises a foundation 7 and a abutment wall 8 supported on the foundation, the cross section of the top of the abutment wall is L-shaped, the height of the abutment wall towards one side of the bridge is lower, the abutment wall is used for supporting an abutment 9, the load of the upper structure of the bridge is transferred to the foundation, the load of the upper structure of the bridge is higher towards one side of a roadbed, the horizontal thrust of roadbed filling soil 10 is resisted, the abutment wall is prevented from being directly extruded by the roadbed filling soil, the abutment structure is required to be quite stable, a gravity type structure is generally adopted, a deep foundation pit is required to be excavated during construction, the concrete foundation 7 is poured, the abutment wall 8 is cast by a supporting template, and the excavation amount and the concrete pouring amount are both larger.

When the underwater bridge is constructed, a trestle is usually required to be built and used as a temporary channel for communicating the shoreside with the underwater construction area for the passing of constructors and equipment and the transportation of materials. The trestle generally adopts a steel structure, the lower structure adopts a steel pipe pile foundation, the upper structure adopts a bailey beam which is erected along the bridge direction as a spandrel girder, and the spandrel girder is sequentially erected with a distribution beam and a bridge deck slab.

As with the common bridge, a bridge abutment is also required to be arranged between the bridge head of the trestle and the roadbed on the bank. At present, when a steel trestle is constructed, a gravity type concrete bridge abutment which is the same as a common bridge is generally adopted; but different from the common bridge, the trestle is used as a temporary structure, and the trestle bridge abutment needs to be removed after the construction of the underwater bridge is completed. Because the gravity type concrete bridge platform has high construction cost and cannot be reused after being dismantled, great waste is caused; and the construction and the demolition of the concrete bridge are serious to the environmental damage.

Disclosure of Invention

The utility model aims to solve the problems and provide the steel structure abutment suitable for the steel trestle, so that the construction cost of the abutment is reduced on one hand, and the abutment material can be reused after the abutment is dismantled, so that the waste is reduced.

The technical scheme of the utility model is as follows:

steel construction abutment suitable for steel trestle, its characterized in that: including two rows of steel-pipe piles that the bridge set up, wherein one row of steel-pipe pile is the back of the body steel-pipe pile, the back of the body steel-pipe pile is close to the road bed and fills earth, the top elevation of back of the body steel-pipe pile flushes with the top surface of road bed filling earth, the welding retaining plate between adjacent back of the body steel-pipe pile, the top of retaining plate flushes with the top height of back of the body steel-pipe pile, another row of steel-pipe pile is the pedestal steel-pipe pile, pedestal steel-pipe pile is located landing stage bridge head below, pedestal steel-pipe pile and back of the body steel-pipe pile are along bridge one-to-one correspondence, every back of the body steel-pipe pile and with its along bridge to the welding tie beam between the opposite pedestal steel-pipe pile, each tie beam top and each pedestal steel-pipe pile top are respectively the bridge to set up the lower part and are allocated the roof beam, the top elevation of the lower part is joined in marriage the roof and is consistent with the base of the bridge bottom elevation of steel landing stage.

According to the utility model, two rows of steel pipe piles are adopted, one row of steel pipe piles is used for bearing the lateral pressure of the soil filled on the back of the platform, the other row of steel pipe piles is used for supporting the bridge head of the trestle, the structure is simple, the on-site excavation amount and the concrete pouring amount are reduced, and the construction cost is low; the inserting and driving depth of the steel pipe pile is set according to the pre-calculated stress load, so that pile vibrating equipment of the trestle steel pipe pile can be directly adopted for inserting and driving, and the construction is convenient; when the abutment is removed, the steel pipe pile can be pulled out for reuse.

Drawings

FIG. 1 is a schematic structural view of a conventional abutment;

FIG. 2 is a side view of the forward bridge structure of the present utility model;

fig. 3 is a schematic plan view of the present utility model.

Detailed Description

As shown in fig. 2 and 3, the utility model comprises two rows of steel pipe piles arranged in a transverse bridge direction, wherein one row of steel pipe piles is a back steel pipe pile 1, the back steel pipe pile 1 is tightly filled with roadbed soil, the top elevation of the back steel pipe pile 1 is flush with the top surface of roadbed filling soil 10, a retaining plate 2 is welded between adjacent back steel pipe piles, the top of the retaining plate 2 is flush with the top elevation of the back steel pipe pile 1, the other row of steel pipe piles is a pedestal steel pipe pile 3, the pedestal steel pipe piles are positioned below the bridge head, the pedestal steel pipe piles 3 and the back steel pipe piles 1 are in one-to-one correspondence in the bridge direction, connecting beams 4 are welded between each back steel pipe pile 1 and the pedestal steel pipe pile 3 opposite to the back steel pipe pile in the bridge direction, the top surfaces of the connecting beams 4 and the tops of the pedestal steel pipe piles 3 are respectively transversely erected in the lower part, and the elevation of the top surface of the lower part of each connecting beam is consistent with the elevation of the bailey beam 11 of the steel bridge.

In the structure, the soil retaining plate 2 has the function of resisting the lateral pressure of the roadbed filling together with the back steel pipe piles 1 so as to prevent the roadbed filling from directly extruding the bridge head of the trestle. In the concrete implementation of the utility model, in order to enhance the strength of the soil-blocking plates, a plurality of reinforcing rods 6 can be welded on each soil-blocking plate 2 towards the bridge head side in the transverse bridge direction, and two ends of each reinforcing rod 6 are respectively welded with two adjacent back steel pipe piles 1. In addition, in order to enhance the section modulus of the back steel pipe pile, fine sand can be filled in the back steel pipe pile to the pile top.

When the utility model is embodied, at least 3 bench steel pipe piles and at least 3 bench steel pipe piles are respectively arranged according to the width of the trestle; the platform back steel pipe pile 1 and the pedestal steel pipe pile 3 can be synchronously constructed with the lower supporting steel pipe pile of the trestle, the construction equipment of the steel pipe pile of the trestle is directly adopted for inserting and driving, after the inserting and driving are finished, a soil retaining plate 2 and a reinforcing rod 6 are welded between the platform back steel pipe piles 1, and then roadbed filling 10 is filled and compacted; welding a connecting beam 4 between a back steel pipe pile and a pedestal steel pipe pile, erecting a lower distribution beam 5 on the connecting beam and the pedestal steel pipe pile, supporting the bridge head end of the bailey beam 11 on the lower distribution beam 5 when erecting a trestle bailey beam 11, transversely erecting an upper distribution beam 12 on the bailey beam 11 and the top of the back steel pipe pile 1, and paving a bridge deck 13 on the upper distribution beam 12; and a layer of concrete cover plate 14 is poured on the roadbed filling 10, and the concrete cover plate 14 is flush with the top surface of the bridge deck 13, so that stable transition between the roadbed and the bridge deck is ensured.

Claims (2)

1. Steel construction abutment suitable for steel trestle, its characterized in that: including two rows of steel-pipe piles that the bridge set up, wherein one row of steel-pipe pile is the back of the body steel-pipe pile, the back of the body steel-pipe pile is close to the road bed and fills earth, the top elevation of back of the body steel-pipe pile flushes with the top surface of road bed filling earth, the welding retaining plate between adjacent back of the body steel-pipe pile, the top of retaining plate flushes with the top height of back of the body steel-pipe pile, another row of steel-pipe pile is the pedestal steel-pipe pile, pedestal steel-pipe pile is located landing stage bridge head below, pedestal steel-pipe pile and back of the body steel-pipe pile are along bridge one-to-one correspondence, every back of the body steel-pipe pile and with its along bridge to the welding tie beam between the opposite pedestal steel-pipe pile, each tie beam top and each pedestal steel-pipe pile top are respectively the bridge to set up the lower part and are allocated the roof beam, the top elevation of the lower part is joined in marriage the roof and is consistent with the base of the bridge bottom elevation of steel landing stage.

2. The steel structure abutment suitable for use in a steel trestle according to claim 1, characterized in that: and a plurality of reinforcing rods are welded on each retaining plate towards the transverse bridge direction at one side of the bridge head, and two ends of each reinforcing rod are respectively welded with two adjacent back steel pipe piles.