CN211947908U - Double-column type concrete-filled steel tube pier with replaceable energy-consuming corrugated steel connecting beam - Google Patents

Abstract

The utility model relates to a take double-column type steel pipe concrete pier of removable power consumption ripple steel company roof beam, including bent cap, pier stud and cushion cap, the bent cap with the cushion cap between set up two pier studs side by side, a serial communication port, two pier studs between horizontal interval set up a plurality of removable power consumption ripple steel company roof beams, every removable power consumption ripple steel company roof beam include removable ripple power consumption section and enhancement linkage segment, ripple power consumption section include top flange, bottom flange and power consumption ripple steel web, top flange, bottom flange and power consumption ripple steel web fixed connection. The utility model is suitable for a ground seismic region, construction are convenient, can restore fast after shaking.

Description

Double-column concrete-filled steel tubular piers with replaceable energy-consuming corrugated steel coupling beams

technical field

The utility model relates to the field of bridge engineering, in particular to a double-column concrete-filled steel tube pier with a replaceable energy-consuming corrugated steel connecting beam and a construction method thereof.

Background technique

my country is located between the Pacific Rim seismic belt and the Eurasian seismic belt. The seismic areas are widely distributed and scattered, and the seismic fortification intensity in many areas is above 7 to 8 degrees. Bridges are important hubs for transportation lifeline projects, and their construction costs are high. Once damaged by an earthquake, it is extremely difficult to repair them after the earthquake. The experience and lessons of previous earthquake damage investigations and earthquake relief shows that the damage to the bridges of the transportation lifeline project in the earthquake area has seriously hindered the relief operations and post-earthquake recovery work, and the economic losses and casualties caused are immeasurable. Therefore, it is particularly important to ensure the seismic safety of bridge structures, which are an important part of lifeline engineering, and to ensure their seismic safety has become an urgent need for my country's economic and social development.

At present, the main principle of seismic design of bridges is ductile seismic design. The stiffness, strength and ductility of the bridge structure are comprehensively considered, and the piers are designed as ductile members. It reacts in a ductile form and does not experience a brittle failure mode. The piers, which are ductile members, dissipate seismic energy through elastic-plastic deformation in the plastic hinge region, reducing the seismic response. However, the ductile design method will inevitably damage the bridge piers, especially in the plastic hinge region, and generate large lateral residual displacements, which brings great difficulty to post-earthquake repair. In addition, most of the traditional bridge piers are reinforced concrete piers, which have small deformation capacity and poor seismic performance. In recent years, with the development of composite structures and the increasing demand for prefabricated high-efficiency construction, more and more CFST composite piers with superior seismic performance and high construction efficiency are used in the design of piers in large-scale bridge projects. Based on the above background, the engineering community urgently needs to introduce a more advanced design scheme of bridge pier-column structure system.

Utility model content

The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and to propose a double-column concrete-filled steel tube pier with replaceable energy-consuming corrugated steel connecting beams, which is suitable for earthquake areas, has convenient construction and can be quickly repaired after earthquakes. In order to realize the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

A double-column concrete-filled steel tubular pier with replaceable energy-consuming corrugated steel connecting beams, comprising a cover beam, a pier column and a cap, wherein two pier columns are arranged side by side between the cap beam and the cap, the It is characterized in that, at least one replaceable energy-consuming corrugated steel connecting beam is arranged at a horizontal interval between the two pier columns, and each replaceable energy-consuming corrugated steel connecting beam includes a replaceable corrugated energy-consuming section and a strengthening connecting section, so The corrugated energy dissipation section includes an upper flange, a lower flange and an energy dissipation corrugated steel web, and the upper flange, the lower flange and the energy dissipation corrugated steel web are fixedly connected, and the energy dissipation corrugated steel connecting beam can be replaced. It is connected with the pier column through the node.

Preferably, the nodes include end plates and connecting plates, the end plates are I-beams, bolt holes are respectively provided on the end plates and the connecting plates, and the end plates are fixedly connected with the CFST piers. The reinforcing connection sections are arranged at both ends of the corrugated energy dissipation section. The bottom of the CFST pier column is double-sided fillet welded with a plurality of stiffening ribs, and the CFST pier column and the bearing platform are connected by high-strength bolts.

The substantial features of the present utility model are:

The strength and thickness of the steel selected for the reinforced connecting section 11 are greater than those of the steel for the corrugated energy dissipation section 12 . During an earthquake, the damage and deformation of the replaceable energy-consuming corrugated steel coupling beam 2 are mainly concentrated on the energy-consuming section, thereby reducing the overall damage and damage to the bridge pier. After the earthquake, by replacing the replaceable energy-consuming corrugated steel connecting beam 2, the bridge pier can be repaired quickly, reducing the time for the bridge pier to restore its normal use function, and effectively improving the disaster relief efficiency.

The reinforced connecting section 11 is an I-beam, and bolt holes are provided on the reinforced connecting section 11 . The strengthening connection section 11 adopts I-beam beams, which is convenient for construction, clear and reliable in force transmission, and can be directly purchased with suitable size, which saves construction costs and improves construction efficiency.

The corrugated energy dissipation section 10 includes an upper flange 13, a lower flange 14 and an energy dissipation corrugated steel web 15. The upper flange 13, the lower flange 14 and the energy dissipation corrugated steel web 15 are fixed by welding. connect. The arrangement of the energy-dissipating corrugated steel web 15 makes the energy-dissipating corrugated steel web 15 have higher buckling stability, out-of-plane stiffness and lateral stiffness, and have higher shear bearing capacity, out-of-plane stability and energy dissipation Its full cross-section can reach shear yielding, and the material utilization rate is high.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present utility model are:

The double-column pier adopts the concrete-filled steel tube structure, which has excellent seismic performance, high construction efficiency, and is convenient for prefabrication. High bearing capacity, good ductility, large initial stiffness and good out-of-plane stability can significantly improve the overall energy dissipation capacity of double-column CFST piers, and at the same time improve the strength and stiffness of double-column piers, reduce their seismic response and Residual displacement; in the event of an earthquake, the "fuse" of the replaceable energy-consuming corrugated steel coupling beam can absorb most of the seismic energy and effectively reduce the damage to the column limb. After the earthquake, only the energy-consuming corrugated steel coupling beam needs to be replaced, no need Repairing the main structure of the double-column concrete-filled steel tubular pier can quickly restore the normal use function of the pier.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Figure 2 is a schematic cross-sectional view of a double-column pier.

Figure 3 is a schematic diagram of the energy-consuming corrugated steel coupling beam and the circular steel tubular concrete pier.

Figure 4 is a schematic diagram of a replaceable energy-consuming corrugated steel coupling beam.

Reference signs: CFST pier 1, replaceable energy-consuming corrugated steel coupling beam 2, node 3, cap 4, cover beam 5, stiffener 6, high-strength bolt 7, end plate 8, connecting plate 9, corrugated energy dissipation Section 10, reinforced connecting section 11, bolts 12, upper flange 13, lower flange 14, energy dissipation corrugated steel web 15.

Detailed ways

In conjunction with the accompanying drawings of the embodiments, the present utility model is described in detail:

The double-column CFST bridge pier with replaceable energy-consuming corrugated steel coupling beam as shown in Figure 1 includes: a cover beam 5, a pier column 1 and a cap 4, and two piers are arranged side by side between the cap beam 5 and the cap 4 A plurality of replaceable energy-consuming corrugated steel connecting beams 2 are arranged horizontally between the two pier columns.

As shown in FIG. 1 , in this specific embodiment, the pier column is a CFST pier 1, the CFST pier 1 is fixedly connected to the bearing platform 4, and the bottom of the CFST pier 1 is double-sided fillet welded with a plurality of stiffening ribs 6, High-strength bolts 7 are used to connect the concrete-filled steel tube pier column 1 and the bearing platform 4 . The inner wall of the steel pipe is provided with studs to improve the connection between the concrete and the steel pipe wall. The CFST pier column 1 has excellent seismic performance and high construction efficiency.

As shown in FIGS. 1-3 , in this specific embodiment, the replaceable energy-consuming corrugated steel coupling beam 2 is connected with the two pier columns 1 through a node 3 . The node 3 includes an end plate 8 and a connecting plate 9, the end plate 8 is an I-beam beam, and bolt holes are respectively provided on the end plate 8 and the connecting plate 9. The end plate 8 and the concrete-filled steel tubular pier 1 are fixedly connected by welding.

As shown in FIG. 4 , in this specific embodiment, the replaceable energy-consuming corrugated steel connecting beam 2 includes a replaceable corrugated energy-consuming section 10, and the two ends of the corrugated energy-consuming section 10 are respectively provided with reinforcing connecting sections 11. The two reinforced connecting sections 11 at the ends realize the fixed connection between the replaceable energy-consuming corrugated steel connecting beam 2 and the two pier columns 1, and the reinforced connecting sections 11 play the role of connection and strengthening support. The corrugated energy dissipation section 10 and the reinforced connection section 11 are fixedly connected by welding, the construction is simple, and the force transmission is clear and reliable. The strength and thickness of the steel selected for the reinforcing connection section 11 are greater than those of the corrugated energy dissipation section 10 . During an earthquake, the damage and deformation of the replaceable energy-consuming corrugated steel coupling beam 2 are mainly concentrated on the energy-consuming section, thereby reducing the overall damage and damage to the bridge pier. After the earthquake, by replacing the replaceable energy-consuming corrugated steel connecting beam 2, the bridge pier can be repaired quickly, reducing the time for the bridge pier to restore its normal use function, and effectively improving the disaster relief efficiency.

As shown in FIG. 4 , in this specific embodiment, the reinforced connecting section 11 is an I-beam, and the reinforced connecting section 11 is provided with a bolt hole. The strengthening connection section 11 adopts I-beam beams, which is convenient for construction, clear and reliable in force transmission, and can be directly purchased with suitable size, which saves construction costs and improves construction efficiency.

As shown in FIG. 3 , in this specific embodiment, the reinforcing connecting segment 11 and the end plate 8 are connected by bolts 12 through the connecting plate 9 . The bolt 12 connection facilitates the rapid installation and replacement of the replaceable energy-consuming corrugated steel connecting beam 2, improves the construction efficiency, and reduces the recovery time for the normal use function of the bridge pier.

As shown in FIG. 4 , in this specific embodiment, the corrugated energy dissipation section 10 includes an upper flange 13 , a lower flange 14 and an energy dissipation corrugated steel web 15 , an upper flange 13 , a lower flange 14 and an energy dissipation corrugation The steel webs 15 are fixedly connected by welding. The energy-dissipating corrugated steel web 15 has high buckling stability, out-of-plane stiffness and lateral stiffness, and has high shear bearing capacity, out-of-plane stability and energy dissipation capacity, and its entire section can reach shear yielding , the material utilization rate is high.

The concrete construction steps of the double-column concrete-filled steel tube pier with the replaceable energy-consuming corrugated steel connecting beam of the present invention are as follows:

(1) The CFST pier 1 can be constructed in a prefabricated way. The bottom surface of the CFST pier 1 is welded with a plurality of stiffeners 6, and the end plates are welded at the side of the CFST pier 1 where the replaceable energy-consuming corrugated steel coupling beam 2 is designed and installed. 8. It is used to connect the replaceable energy-consuming corrugated steel connecting beam 2.

(2) The cap 4 can be constructed by cast-in-place or prefabrication. High-strength bolt connection holes are reserved on the top surface of the bearing platform 4 for connecting and fixing the high-strength bolts 7 of the CFST pier 1 and the bearing platform 4 .

(3) The replaceable energy-consuming corrugated steel connecting beam 2 is installed after the construction of the bearing platform 4 and the double-column concrete-filled steel tubular pier is completed, and is connected with the end plate 8 through the connecting plate 9 by bolts 12 .

Claims (4)

1. The utility model provides a take double-column type steel pipe concrete pier of removable power consumption ripple steel company roof beam, includes bent cap, pier stud and cushion cap, the bent cap with the cushion cap between set up two pier studs side by side, its characterized in that, two pier studs between horizontal interval set up at least one removable power consumption ripple steel company roof beam, every removable power consumption ripple steel company roof beam includes removable ripple power consumption section and reinforced connection section, ripple power consumption section include top flange, bottom flange and power consumption ripple steel web, top flange, bottom flange and power consumption ripple steel web fixed connection, link to each other through the node between removable power consumption ripple steel company roof beam and the pier stud.

2. The double-column type concrete-filled steel tube pier as claimed in claim 1, wherein the node comprises an end plate and a connecting plate, the end plate is an I-shaped steel beam, bolt holes are respectively formed in the end plate and the connecting plate, and the end plate is fixedly connected with the concrete-filled steel tube pier.

3. The double column type concrete-filled steel tube pier according to claim 1, wherein the reinforcing connection sections are provided at both ends of the corrugated energy dissipation section.

4. The double-column concrete-filled steel tube pier according to claim 1, wherein a plurality of stiffening ribs are fillet-welded on the two sides of the bottom of the pier column, and the pier column is connected with the bearing platform through high-strength bolts.

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