CN212247837U - A corner reinforced double steel plate composite hollow pier - Google Patents

Abstract

The utility model relates to a corner reinforced double-steel composite hollow bridge pier and a construction method thereof. The hollow bridge pier comprises a round steel pipe, a double-layer steel plate, a transverse steel partition and a pier bottom reinforcing plate, and is characterized in that the round steel pipe comprises The four are located at the corners, and are arranged along the bridge direction and the transverse direction of the bridge respectively. Double-layer steel plates are welded between two adjacent round steel pipes; the four round steel pipes and their adjacent double-layer steel plates are fixedly connected to form a corner. A reinforced double-steel-plate hollow sleeve; the circular steel pipe and the double-layer steel plate are internally poured with concrete. Fillet welds are used to connect the double-layer steel plates and the two adjacent round steel pipes. The bridge pier of the utility model has high rigidity, strength and anti-seismic performance, and is convenient for construction and economical.

Description

A corner reinforced double steel plate composite hollow pier

technical field

The utility model is designed in the field of bridge engineering, in particular to a corner reinforced double-steel plate composite hollow bridge pier and a construction method thereof.

Background technique

With the development of my country's social economy, which drives the accelerated development of transportation, a large number of roads, railways, bridges, etc. have been put into use. As an important load-bearing and force-transmitting component in the substructure of bridges, bridge piers have higher requirements on their bearing capacity, stiffness and seismic performance. The traditional bridge piers use reinforced concrete piers, and the reinforced concrete piers have a large amount of masonry work, and their shape is thick and heavy, which increases the foundation load, especially when the piers are high and the bearing capacity of the foundation is low.

In areas with complex terrain and high navigation demand such as oceans, mountains and reservoirs, the application requirements of high bridge piers are becoming more and more extensive. For high bridge piers, the main forms of bridge piers are: reinforced concrete hollow pier, reinforced concrete hollow thin-walled pier, reinforced concrete hollow and double-walled composite pier, and the CFST lattice pier gradually adopted in recent years. When the height of the bridge pier is large, the three types of reinforced concrete piers have the disadvantages of high technical requirements, cumbersome construction and high cost; while the CFST lattice pier has the advantages of convenient construction and strong economy, it is used in some bridge projects. However, due to its weak stiffness, if it is used as a high pier of a bridge, the flexibility is large and cannot meet the deformation requirements. Therefore, in engineering practice, it is necessary to provide a high pier form with high stiffness, strength and seismic performance, which is convenient for construction and economical.

Utility model content

The technical problem to be solved by the utility model is to provide a corner reinforced double-steel plate composite hollow bridge pier and its construction method with convenient construction and strong economy. high pier. For achieving the above object, the technical scheme of the present invention is as follows:

A corner-reinforced double-steel-plate composite hollow bridge pier includes a round steel tube, a double-layer steel plate, a transverse steel partition and a pier bottom reinforcing plate, and is characterized in that the round steel tube includes four and is located at the corner, respectively along the bridge. The double-layer steel plates are respectively welded between the two adjacent round steel pipes; the four round steel pipes and their adjacent double-layer steel plates are fixedly connected to form a corner-reinforced double-steel plate hollow sleeve; the The round steel pipe and double-layer steel plate are poured with concrete inside.

Preferably, fillet welds are used to connect the double-layer steel plates and the two adjacent round steel pipes.

The transverse steel partitions are arranged at longitudinal intervals and horizontally along the inner wall of the corner-reinforced double-steel-plate hollow sleeve, and are welded and connected with the round steel pipe and the double-layer steel plate on the inner wall.

The pier bottom reinforcing plates are arranged at intervals along the inner wall of the pier bottom of the corner reinforced double-steel-plate hollow sleeve, and are respectively welded and connected with the round steel pipe and the double-layer steel plate.

The round steel pipe is graded along the bridge direction at a ratio of 50 to 100:1.

Compared with the prior art, the utility model has the following advantages:

First, compared with the existing reinforced concrete bridge piers, the corner-reinforced double-steel plate composite hollow bridge pier of the present invention has high bearing capacity, high rigidity, convenient construction, good economy, light weight, and low requirements for the bearing capacity of the foundation. ; For bridge piers in high-intensity areas, the use of corner reinforced double-steel plate composite hollow piers can enhance their seismic performance.

Second, the round steel pipe and the double-layer steel plate of the corner-reinforced double-steel-plate composite hollow pier of the present invention can bear both force and formwork, and do not need to dismantle the formwork. During construction, only the round steel pipe and the double-layer steel plate need to be hoisted and welded. The hollow steel cylinder has low requirements for construction and hoisting.

Third, the corner reinforced double-steel plate composite hollow pier of the present utility model is provided with a transverse steel partition inside, and a pier bottom reinforcing plate is arranged at the bottom of the pier, which strengthens the firmness of the pier and meets the rigidity and bearing capacity requirements of the bridge.

Description of drawings

Figure 1 is a front view of a corner reinforced double steel plate composite hollow pier;

Figure 2 is the right side view of the corner reinforced double steel plate composite hollow pier;

Fig. 3 is a sectional view along line A-A in Fig. 2;

Fig. 4 is a sectional view along line B-B in Fig. 2;

Fig. 5 is a sectional view along line C-C in Fig. 2;

Figure 6 is a schematic structural diagram of a transverse steel partition in a corner-reinforced double-steel-plate composite hollow pier;

Fig. 7 is the structural schematic diagram of the reinforcing plate at the bottom of the pier in the corner reinforced double-steel composite hollow pier;

Figure 8 is a schematic structural diagram of a corner-reinforced double-steel-plate hollow sleeve in a middle-corner-reinforced double-steel-plate composite hollow pier;

Figure 9 is a schematic structural diagram of a corner reinforced double-steel plate composite hollow pier;

In the picture: 1-round steel pipe, 2-double-layer steel plate, 3-concrete, 4-transverse steel partition plate, 5-pier bottom reinforcement plate, 6-main beam, 7-captive platform, 8-corner reinforced double steel plate Hollow sleeve, 9-angle reinforced double steel plate composite hollow pier.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 9, a corner reinforced double steel plate composite hollow bridge pier in this embodiment includes a round steel pipe 1, a double-layer steel plate 2, a transverse steel partition 4 and a pier bottom reinforcing plate 5; The steel pipes 1 include four, which are arranged at intervals along the bridge direction and the transverse bridge direction, respectively, and double-layer steel plates 2 are welded between two adjacent round steel pipes; the four round steel pipes 1 and their adjacent double-layer steel plates at the corners 2. Welding to form a corner-reinforced double-steel-steel hollow sleeve 8; the circular steel pipe 1 and the double-layer steel plate 2 are poured with concrete 3 to form a corner-reinforced double-steel-steel composite hollow pier 9; The bridge direction is graded along 50-100:1. Both ends of the corner reinforced double steel plate composite hollow pier 9 are respectively fixedly connected to the main beam 6 and the bearing platform 7 of the bridge. The double-layer steel plate 2 includes two pieces, which are respectively arranged symmetrically along the line connecting the centroids of the adjacent two round steel pipes 1 . The double-layer steel plates 2 and the two adjacent round steel pipes 1 are connected by fillet welds. The transverse steel partitions 4 are arranged at longitudinal intervals and horizontally along the inner wall of the corner-reinforced double-steel-plate hollow sleeve 8 , and the inner wall is welded to the round steel pipe 1 and the double-layer steel plate 2 . The pier bottom reinforcing plates 5 are arranged at intervals along the inner wall of the pier bottom of the corner reinforced double-steel-plate hollow sleeve, and are respectively connected with the round steel pipe 1 and the double-layer steel plate 2 by welding.

The construction method of the corner reinforced double-steel plate composite hollow bridge pier provided by the utility model, the specific implementation steps are as follows:

(1) Process the round steel pipe 1 and the double-layer steel plate 2 according to the design size, and use fillet welds to weld the double-layer steel plate 2 between the two adjacent round steel pipes 1 respectively. The two steel plates of the double-layer steel plate 2 are along the adjacent The line connecting the centroids of the two round steel pipes 1 is symmetrically arranged, so that the four round steel pipes 1 at the corners and the double-layer steel plates 2 connected between them form an integral corner reinforced double steel plate hollow sleeve 8 . The round steel pipe 1 and the double-layer steel plate 2 can be made of ordinary low-carbon steel, weathering steel, or high-strength steel. Stainless steel can be used in corrosive environments such as rivers and oceans.

(2) According to the design size, horizontally weld the transverse steel partitions 4 on the inner wall of the welded corner reinforced double-steel hollow casing along the longitudinal interval, and at the circumferential interval of the inner wall of the pier bottom of the corner reinforced double-steel hollow casing Welded pier bottom reinforcement plate 5;

(3) On the construction site, install the prefabricated corner reinforced double-steel hollow casing 8 to the corresponding installation position according to the design position, and connect it with the bearing platform. After the installation and connection are completed, the round steel pipe 1 and the double-layer steel plate 2. Concrete 3 is poured inside, and after the concrete is hardened, a corner reinforced double-steel plate composite hollow pier 9 is formed.

Compared with the prior art, the utility model has the following advantages:

First, compared with the existing reinforced concrete bridge piers, the corner-reinforced double-steel plate composite hollow bridge pier of the present invention has high bearing capacity, high rigidity, convenient construction, good economy, light weight, and low requirements for the bearing capacity of the foundation. ; For bridge piers in high-intensity areas, the use of corner reinforced double-steel plate composite hollow piers can enhance their seismic performance.

Second, the round steel pipe and the double-layer steel plate of the corner-reinforced double-steel-plate composite hollow pier of the present invention can bear both force and formwork, and do not need to dismantle the formwork. During construction, only the round steel pipe and the double-layer steel plate need to be hoisted and welded. The hollow steel cylinder has low requirements for construction and hoisting.

Third, the corner reinforced double-steel plate composite hollow pier of the present utility model is provided with a transverse steel partition inside, and a pier bottom reinforcing plate is arranged at the bottom of the pier, which strengthens the firmness of the pier and meets the rigidity and bearing capacity requirements of the bridge.

Although the present utility model has been described above in conjunction with the accompanying drawings, the present utility model is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present utility model, many modifications can be made without departing from the purpose of the present utility model, which all fall within the protection scope of the present utility model.

Claims (6)

1. a corner reinforced double-steel plate composite hollow pier, comprising round steel pipe, double-layer steel plate, transverse steel clapboard and pier bottom reinforcing plate, is characterized in that, described round steel pipe comprises four and is positioned at the corner, respectively. Arranged along the bridge direction and transverse direction of the bridge, the two adjacent round steel pipes are welded with double-layer steel plates respectively; the four round steel pipes and their adjacent double-layer steel plates are fixedly connected to form a corner-reinforced double steel plate hollow sleeve; Concrete is poured inside the circular steel pipe and the double-layer steel plate. 2 . The hollow bridge pier according to claim 1 , wherein the double-layer steel plates and the two adjacent round steel pipes are connected by fillet welds. 3 . 3. The hollow bridge pier according to claim 1, characterized in that, the transverse steel clapboard is arranged horizontally along the inner wall of the corner reinforced double-steel-plate hollow sleeve at a longitudinal interval, and is connected with the round steel pipe and the double-layer steel plate on its inner wall. Solder connection. 4 . The hollow bridge pier according to claim 1 , wherein the reinforcing plate at the bottom of the pier is arranged at intervals along the inner wall of the bottom of the pier of the corner-reinforced double-steel-plate hollow sleeve, and is respectively connected with the round steel pipe and the double-layered hollow pier. 5 . Steel plate welded connection. 5 . The hollow bridge pier according to claim 1 , wherein the round steel pipe is graded along the bridge direction at a ratio of 50 to 100:1. 6 . 6 . The hollow bridge pier according to claim 1 , wherein both ends of the corner reinforced double-steel plate composite hollow bridge pier are respectively fixedly connected to the main beam and the bearing platform of the bridge. 7 .

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