Simple steel structure abutment of deck type temporary steel bridge

Abstract

The utility model relates to a simple steel structure bridge abutment of a deck type temporary steel bridge. The bridge abutment comprises three spiral steel pipes I, three spiral steel pipes II, a bearing beam I, a bearing beam II, a soil retaining steel plate and an expansion joint steel plate. Notches are respectively formed in the centers of the tops of the spiral steel pipe I and the spiral steel pipe II; the bearing beams I connected with the spiral steel pipe I are arranged in a notch of the spiral steel pipe I; the bearing beam II connected with the spiral steel pipe II is arranged in a notch of the spiral steel pipe II; the soil retaining steel plate is parallel to the three spiral steel pipes I, and the tops of the soil retaining steel plate are flush; and one expansion joint steel plate is mounted at the tops of the three spiral steel pipes I and the top of the bearing beam I. The temporary steel bridge is simple in structure, convenient to install, time-saving and labor-saving, teams and equipment except for temporary steel bridge construction do not need to be added, steel can be recycled after the temporary steel bridge is used, the temporary land use recovery cost caused by dismantling of the concrete bridge abutment is reduced, and good economic benefits and environmental protection effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of the construction of temporary facilities for bridge engineering, in particular to a simple steel structure abutment for a deck steel temporary bridge. Background Art

[0002] The construction of steel temporary bridges is simple and the erection speed is fast. At present, it is widely used in the construction of river-crossing bridges and provides fast and safe passage conditions for personnel and equipment as large temporary facilities. In order to meet the bearing capacity and the lateral pressure of the backfill soil behind the abutment, cast-in-situ concrete abutments are often used in the design of deck steel temporary bridges, which have a long construction period, high construction costs, and great difficulty in demolishing and restoring the temporary land. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a simple steel structure abutment for a deck steel temporary bridge with simple construction, convenient demolition and recyclability.

[0004] In order to solve the above problems, a simple steel structure abutment for a deck steel temporary bridge of the utility model is characterized in that: the abutment comprises three spiral steel pipes I, three spiral steel pipes II, a load-bearing beam I, a load-bearing beam II, a retaining steel plate and an expansion joint steel plate; the tops of the spiral steel pipes I and the spiral steel pipes II are respectively provided with notches in the middle; the load-bearing beam I which is connected together is arranged in the notch of the spiral steel pipe I; the load-bearing beam II which is connected together is arranged in the notch of the spiral steel pipe II; a retaining steel plate is parallel to the three spiral steel pipes I and has the same top level; an expansion joint steel plate is installed on the tops of the three spiral steel pipes I and the load-bearing beam I.

[0005] The height of the spiral steel pipe I is lower than that of the spiral steel pipe II.

[0006] The longitudinal distance between the spiral steel pipe I and the spiral steel pipe II is 1 meter.

[0007] The three spiral steel pipes I are connected to the load-bearing beam I at equal intervals.

[0008] The three spiral steel pipes II are connected to the load-bearing beam II at equal intervals.

[0009] The utility model has the following advantages compared with the prior art:

[0010] 1. In the utility model, the spiral steel pipe I, the load-bearing beam I, the retaining steel plate and the expansion joint steel plate are connected to form the back wall and the expansion joint of the abutment, and the spiral steel pipe II and the load-bearing beam II are connected to form the abutment cap. The steel structure is used to replace the concrete pile foundation and the back of the abutment, with fast construction speed, convenient demolition, avoiding the construction of concrete breaking, and reducing the difficulty of restoring the temporary land.

[0011] 2. This utility model adopts a steel structure, which has a lower construction cost compared to concrete, and the steel can be recycled, achieving the effect of energy conservation and emission reduction.

[0012] 3. This utility model has a simple structure and is easy to install. There is no need to add a concrete pile foundation and a reinforced concrete construction team. The construction can be completed by using the existing personnel and equipment of the steel temporary bridge construction team. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following further details the specific implementation manners of this utility model with reference to the accompanying drawings.

[0014] Figure 1 It is a schematic structural diagram of this utility model.

[0015] Figure 2 It is a schematic diagram of the actual operation in this utility model.

[0016] In the figure: 1 - spiral steel pipe I; 2 - spiral steel pipe II; 3 - load-bearing beam I; 4 - load-bearing beam II; 5 - retaining steel plate; 6 - expansion joint steel plate. SPECIFIC IMPLEMENTATION MANNERS

[0017] As Figure 1 shown, an upper-bearing steel temporary bridge simple steel structure abutment, which includes three spiral steel pipes I 1, three spiral steel pipes II 2, a load-bearing beam I 3, a load-bearing beam II 4, a retaining steel plate 5 and an expansion joint steel plate 6. Grooves are respectively provided in the middle of the tops of the spiral steel pipes I 1 and the spiral steel pipes II 2; the load-bearing beam I 3 connected together is provided in the groove of the spiral steel pipe I 1; the load-bearing beam II 4 connected together is provided in the groove of the spiral steel pipe II 2; a retaining steel plate 5 is parallel to the three spiral steel pipes I 1 and has a flush top; an expansion joint steel plate 6 is installed on the tops of the three spiral steel pipes I 1 and the load-bearing beam I 3.

[0018] Among them: the height of the spiral steel pipe I 1 is lower than that of the spiral steel pipe II 2.

[0019] The longitudinal distance between the spiral steel pipe I 1 and the spiral steel pipe II 2 is 1 meter.

[0020] The three spiral steel pipes I 1 are connected to the load-bearing beam I 3 at equal intervals.

[0021] The three spiral steel pipes II 2 are connected to the load-bearing beam II 4 at equal intervals.

[0022] The materials of the spiral steel pipe I 1 and the spiral steel pipe II 2 are Q235B, with a diameter of 630 mm and a wall thickness of 8 mm, and the length is determined according to the actual geological conditions.

[0023] The materials of the load-bearing beam I 3 and the load-bearing beam II 4 are both Q235B, which are double-welded by two 40a-type I-beams, and the length of each is 7 meters.

[0024] The material of the retaining steel plate 5 is Q235B, with a length of 7m, a width of 2.5m, and a thickness of 25mm.

[0025] The material of the expansion joint steel plate 6 is Q235B, with a length of 6m, a width of 1.3m, and a thickness of 25mm.

[0026] The spiral steel pipe Ⅰ1, the load-bearing beam Ⅰ3, the retaining steel plate 5 and the expansion joint steel plate 6 are connected to form the back wall of the abutment and the expansion joint, and the spiral steel pipe Ⅱ2 and the load-bearing beam Ⅱ4 are connected to form the abutment cap.

[0027] The manufacturing and using method of the utility model:

[0028] ⑴ Use a vibratory hammer to drive the spiral steel pipe Ⅰ1 to the designed depth at the position of the steel temporary bridge abutment according to the transverse spacing of 3m.

[0029] ⑵ Use a vibratory hammer to drive the spiral steel pipe Ⅱ2 to the designed depth at the position of the steel temporary bridge abutment according to the transverse spacing of 3m and the longitudinal spacing of 1m from the spiral steel pipe Ⅰ1. According to the current common dimensions of Bailey beams and bridge decks, the height difference between the spiral steel pipe Ⅰ1 and the spiral steel pipe Ⅱ2 is preferably 1.82m.

[0030] ⑶ Horizontally cut notches with a depth of 40cm and a width of 15cm at the centers of the tops of the three spiral steel pipes Ⅰ1 and the three spiral steel pipes Ⅱ2 respectively.

[0031] ⑷ Weld two 40a I-beams in double to form the load-bearing beam Ⅰ3, and weld the load-bearing beam Ⅰ3 in the notch of the spiral steel pipe Ⅰ1; weld two 40a I-beams in double to form the load-bearing beam Ⅱ4, and weld the load-bearing beam Ⅱ4 in the notch of the spiral steel pipe Ⅱ2.

[0032] ⑸ Weld a retaining steel plate 5 parallel to the three spiral steel pipes Ⅰ1 with the tops flush.

[0033] ⑹ After erecting the first span of Bailey beams and bridge decks, install an expansion joint steel plate 6 on the tops of the three spiral steel pipes Ⅰ1 and the load-bearing beam Ⅰ3, weld it firmly, and backfill the soil behind the abutment to allow traffic.

Claims

1. A simple steel structure abutment for an upper bearing steel temporary bridge, characterized in that: The abutment includes three spiral steel pipes Ⅰ (1), three spiral steel pipes Ⅱ (2), a load-bearing beam Ⅰ (3), a load-bearing beam Ⅱ (4), a retaining steel plate (5) and an expansion joint steel plate (6); the tops of the spiral steel pipes Ⅰ (1) and the spiral steel pipes Ⅱ (2) are respectively provided with notches in the middle; the load-bearing beam Ⅰ (3) which is connected together is arranged in the notch of the spiral steel pipe Ⅰ (1); the load-bearing beam Ⅱ (4) which is connected together is arranged in the notch of the spiral steel pipe Ⅱ (2); a retaining steel plate (5) is parallel to the three spiral steel pipes Ⅰ (1) and has the same top level; an expansion joint steel plate (6) is installed on the tops of the three spiral steel pipes Ⅰ (1) and the load-bearing beam Ⅰ (3).

2. The simple steel structure abutment of the upper-supported steel temporary bridge according to claim 1, characterized in that: The height of the spiral steel pipe Ⅰ (1) is lower than that of the spiral steel pipe Ⅱ (2).

3. The simple steel structure abutment of the upper bearing type steel temporary bridge according to claim 1, characterized in that: The longitudinal spacing between the spiral steel pipe Ⅰ (1) and the spiral steel pipe Ⅱ (2) is 1 meter.

4. The simple steel structure abutment of the upper bearing steel temporary bridge according to claim 1, characterized in that: The three spiral steel pipes Ⅰ (1) are connected to the load-bearing beam Ⅰ (3) at equal intervals.

5. The simple steel structure abutment of the upper-supported steel temporary bridge according to claim 1, characterized in that: The three spiral steel pipes Ⅱ (2) are connected to the load-bearing beam Ⅱ (4) at equal intervals.

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