Detachable sleeve connecting structure of concrete abutment energy dissipation steel plate

Abstract

A detachable sleeve connecting structure of a concrete pier and abutment energy dissipation steel plate comprises the energy dissipation steel plate, an embedded connecting steel bar, a steel sleeve and a high-strength connecting bolt, the embedded connecting steel bar and the steel sleeve are arranged in a concrete pier column and a concrete bearing platform, and the outer end of the embedded connecting steel bar is connected with the inner end of the steel sleeve; the outer end of the steel sleeve is connected with an external high-strength connecting bolt, and the external high-strength connecting bolt penetrates through a bolt hole of the energy dissipation steel plate to achieve connection between the energy dissipation steel plate and the concrete pier column and between the energy dissipation steel plate and the concrete bearing platform. Mechanical connection among the reinforcing steel bars, the steel sleeves and the bolts is adopted, the detachable steel plate connecting device can be applied to connection between plates similar to steel plates and concrete, the detachability of the connecting mode is achieved, the steel plates need to be detached conveniently after an earthquake and during reconstruction, and an original concrete structure is not damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge engineering field, concretely relates to a detachable sleeve connecting structure of concrete pier platform energy dissipation steel sheet. BACKGROUND

[0002] With the rapid development of the transportation field, higher requirements are put forward for the seismic capacity and post-disaster recovery capacity of bridge structures, especially the seismic capacity of piers. Under the action of earthquakes, great bending moments and shears appear at the bottom of the pier, which easily leads to serious damage of the pier bottom. In order to improve the seismic performance of the pier and protect the safety of the pier column structure, energy dissipation devices are usually arranged at the joint part of the pier-pier platform to reduce or avoid the damage of the pier. The energy dissipation devices can be quickly replaced after disasters, which has great significance for the rapid recovery of traffic road traffic and the protection of lifeline unobstructedness. Therefore, a replaceable energy dissipation device replacement system is urgently needed to be developed to protect the quick installation and replacement of the energy dissipation device. SUMMARY

[0003] In order to overcome the limitation that the existing energy dissipation device or steel plate is not convenient to remove, the utility model provides a detachable sleeve connecting structure of concrete pier platform energy dissipation steel sheet, which realizes the detachable connection form of the energy dissipation steel plate, and realizes the quick installation and removal of the energy dissipation device without damaging the function of the concrete pier column.

[0004] To achieve the above purpose, the solution of the utility model is as follows:

[0005] A detachable sleeve connecting structure of concrete pier platform energy dissipation steel plate, comprising an energy dissipation steel plate, a pre-buried connecting steel bar, a steel sleeve and a high-strength connecting bolt, the pre-buried connecting steel bar and the steel sleeve are arranged in the concrete pier column and the concrete platform, the outer end of the pre-buried connecting steel bar is connected with the inner end of the steel sleeve, the outer end of the steel sleeve is connected with the external high-strength connecting bolt, and the external high-strength connecting bolt passes through the bolt hole of the energy dissipation steel plate to realize the connection of the energy dissipation steel plate with the concrete pier column and the concrete platform.

[0006] Further, the energy dissipation steel plate is an L-shaped steel plate formed by welding a steel plate, and a bolt hole is arranged on the surface of the steel plate, and the energy dissipation steel plate is located at the connecting part of the concrete pier column and the concrete platform.

[0007] Still further, the outer end of the pre-buried connecting steel bar and the inner end of the steel sleeve are threadedly connected, and are pre-buried in the pier and the platform during the pouring of concrete and are positioned.

[0008] Preferably, the outer end of the pre-buried connecting steel bar is provided with a threaded section, and the inner end of the pre-buried connecting steel bar is in a bent-up shape.

[0009] Still further, the outer end of the steel sleeve is threadedly connected with the high-strength connecting bolt. Still further, the outer end of the steel sleeve is threadedly connected with the high-strength connecting bolt.

[0010] In the utility model, after the concrete pier column and the pile cap pouring are completed, the one end of the steel sleeve is flush with the concrete surface and exposes the connecting hole. The energy dissipation steel plate is installed to the connecting place of the concrete pier column and the concrete pile cap, and the installation is completed by screwing in the high-strength connecting bolt; when disassembling, the high-strength connecting bolt is screwed out, and the energy dissipation steel plate to be replaced is unloaded to complete the replacement process.

[0011] Due to the above scheme, the utility model has the beneficial effects that:

[0012] (1) the high-strength bolt of the steel sleeve connecting the steel bars in the concrete and the transmission steel plate can form effective mechanical connection and reasonable stress. The high-strength bolt can exert pre-tightening force to improve the connecting stress of the energy dissipation steel plate and the concrete pier column. The bent steel bar can provide excellent pulling force to improve anchoring performance, and the steel bar material is easy to obtain;

[0013] (2) the installation and disassembly of the energy dissipation steel plate and the concrete pier column and the pile cap connection can be realized through the high-strength bolt, and based on the easy disassembly characteristics of the high-strength bolt, quick installation and quick replacement after disaster can be realized;

[0014] (3) through the connection mode of the steel bar-steel sleeve-bolt, the concrete and the steel plate can be effectively connected, and this novel connection mode can be popularized and applied to the pier-pile cap connection of the prefabricated concrete pier. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is the side view of the utility model;

[0017] Figure 3 It is the three-dimensional schematic view of the energy dissipation steel plate of the utility model;

[0018] Figure 4 It is the steel bar-steel sleeve-bolt connection schematic view of the utility model.

[0019] In the drawing: 1, concrete pier column; 2, concrete pile cap; 3, energy dissipation steel plate; 4, high-strength connecting bolt; 5, embedded connecting steel bar; 6, steel sleeve; 11, high-strength bolt hole. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the embodiment shown in the drawing.

[0021] Referring to Figures 1-4 A detachable sleeve connection structure of a concrete pier-pile cap energy dissipation steel plate can improve the quick installation of the energy dissipation device and the quick and non-destructive replacement after disaster. Figure 1 It is the front view of the utility model. Figure 2 It is the side view of the utility model.Figure 3 The energy dissipation steel plate three-dimensional schematic view of the utility model. Figure 4 The steel bar-steel sleeve-bolt connection schematic view of the utility model.

[0022] Combining Figure 1 And Figure 2 As shown in the figure, a detachable sleeve connection structure of a concrete pier energy dissipation steel plate, comprising an energy dissipation steel plate 3, a pre-buried connecting steel bar 5, a steel sleeve 6 and a high-strength connecting bolt 4, the pre-buried connecting steel bar 5 and the steel sleeve 5 are arranged in the concrete pier 1 and the concrete cap 2, the outer end of the pre-buried connecting steel bar 5 is connected with the inner end of the steel sleeve 5, the outer end of the steel sleeve 5 is connected with the external high-strength connecting bolt 4, and the external high-strength connecting bolt 4 passes through the bolt hole of the energy dissipation steel plate 3 to realize the connection between the energy dissipation steel plate 3 and the concrete pier 1 and the concrete cap 2.

[0023] The energy dissipation steel plate 3 is an L-shaped steel plate formed by welding a steel plate, and a high-strength bolt hole 11 is arranged on the surface of the steel plate, and the energy dissipation steel plate 3 is located at the connection between the concrete pier 1 and the concrete cap 2.

[0024] The outer end of the pre-buried connecting steel bar 5 and the inner end of the steel sleeve 6 are threadedly connected, and the pre-buried connecting steel bar 5 is pre-buried in the pier and the cap during pouring of the concrete and is positioned.

[0025] The outer end of the pre-buried connecting steel bar 5 is provided with a threaded section, and the inner end of the pre-buried connecting steel bar 5 is bent.

[0026] The outer end of the steel sleeve 6 is threadedly connected with the high-strength connecting bolt 4.

[0027] In the embodiment, the pre-buried connecting steel bar 5 and the steel sleeve 6 are arranged in the concrete pier 1 and the concrete cap 2, the steel sleeve 6 is connected by the external high-strength bolt 4, and the connection between the energy dissipation steel plate 3 and the concrete pier 1 and the concrete cap 2 is realized. The connection between the high-strength bolt 4 and the steel sleeve 6 is the key to realize the detachability, and the high-strength bolt 4 can be screwed in and out to realize rapid installation and removal on the engineering site, meet the demand of non-destructive replacement of the energy dissipation device, and improve the connection performance of the steel plate and the concrete by applying the pre-tightening force of the high-strength bolt 4.

[0028] Combining Figure 3 As shown in the figure, a high-strength bolt hole 11 is arranged on the energy dissipation steel plate 3 for passing in the high-strength bolt 4 and connecting with the steel sleeve 6. For commonly used energy dissipation devices, the connection mode of the concept can be realized by arranging holes at both ends of the device.

[0029] Combining Figure 4As shown, the threaded mechanical connection is adopted between the embedded connecting steel bar 5 and the steel sleeve 6, and between the steel sleeve 6 and the high-strength connecting bolt 4. The embedded connecting steel bar 5 and the steel sleeve 6 can be embedded before the concrete pouring and positioned. The connecting end of the embedded connecting steel bar 5 and the steel sleeve 6 should be provided with threads, and the other end is bent to play a role of resisting pulling. In the field installation of the energy dissipation device, the matched energy dissipation steel plate 3 is placed in place, the high-strength connecting bolt 4 is screwed in, and if necessary, a pre-tightening force is applied, so that the installation is completed. When disassembling, the high-strength connecting bolt 4 is unscrewed to complete the disassembly and replacement. The connecting structure formed by the embedded connecting steel bar 5, the steel sleeve 6 and the high-strength connecting bolt 4 is considered to be the most easily obtained raw material in the use of engineering materials, the structure is simple, has high economy, and at the same time improves the field operation efficiency and reduces the labor cost.

Claims

1. A detachable sleeve connection structure of a concrete pier energy dissipation steel plate, characterized by, The connecting structure comprises a dissipative steel plate, a pre-buried connecting steel bar, a steel sleeve and a high-strength connecting bolt, the pre-buried connecting steel bar and the steel sleeve are arranged in the concrete pier column and the concrete pile cap, the outer end of the pre-buried connecting steel bar is connected with the inner end of the steel sleeve, the outer end of the steel sleeve is connected with the external high-strength connecting bolt, and the external high-strength connecting bolt passes through the bolt hole of the dissipative steel plate to realize the connection between the dissipative steel plate and the concrete pier column and the concrete pile cap.

2. A detachable sleeve connection structure of a concrete pier energy dissipation steel plate according to claim 1, characterized in that, The dissipative steel plate is an L-shaped steel plate formed by welding a steel plate, and a bolt hole is arranged on the surface of the steel plate.

3. A detachable sleeve connection structure of a concrete pier energy dissipation steel plate according to claim 1 or 2, characterized in that, The outer end of the pre-buried connecting steel bar and the inner end of the steel sleeve are threadedly connected, the pre-buried connecting steel bar is pre-buried in the bridge pier and the pile cap during pouring of the concrete, and positioning is performed.

4. A detachable sleeve connection structure of a concrete pier energy dissipation steel plate according to claim 3, characterized in that, The outer end of the pre-buried connecting steel bar is provided with a threaded section, and the inner end of the pre-buried connecting steel bar is in a bent-up shape.

5. The detachable sleeve connection structure of a concrete pier energy dissipation steel plate according to claim 1 or 2, characterized in that, The outer end of the steel sleeve is threadedly connected with the high-strength connecting bolt.

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