Exterior wall-beam replaceable energy consumption node applied to underground structure

Abstract

The utility model discloses an outer wall-beam replaceable energy consumption node applied to an underground structure, and relates to the field of building structure shock resistance toughness improvement, the outer wall-beam replaceable energy consumption node comprises a cast-in-place concrete structure, an I-shaped composite beam structure and an energy consumption bearing composite structure, the cast-in-place concrete structure comprises two cast-in-place concrete beams which are oppositely arranged at intervals, the I-shaped composite beam structure is fixedly mounted between the two cast-in-place concrete beams and is detachably connected with the cast-in-place concrete beams on the two sides; the energy consumption bearing combined structure is fixedly mounted below the cast-in-place concrete beams and the I-shaped combined beam structure, and the energy consumption bearing combined structure is detachably connected with the cast-in-place concrete beams on the two sides above the energy consumption bearing combined structure; shock absorption and energy consumption are carried out through the I-shaped composite beam structure and the energy consumption bearing composite structure, and the bearing capacity and the shock resistance of the underground structure are effectively improved; and through detachable connection, replacement of the I-shaped composite beam structure and the energy dissipation bearing composite structure is facilitated, and rapid improvement of the toughness of the underground frame structure after an earthquake can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of improving the seismic resilience of building structures, and particularly relates to an outer wall-beam replaceable energy dissipation joint applied to underground structures. Background Technique

[0002] With the rapid economic development, the development of urban above-ground space has gradually become saturated, and the basic functions of above-ground structures can no longer meet people's living needs. Reasonably utilizing underground space is conducive to alleviating this situation. Common underground buildings include subway stations, underground tunnels, underground parking lots, large underground shopping malls, etc. The structural forms of these common underground buildings are mostly cast-in-place concrete structures, and it is difficult to repair them after damage.

[0003] In the past, people generally believed that the safety of underground structures was higher than that of above-ground structures, and less research had been done on their seismic performance. However, the damage of large driving stations has attracted people's great attention to the seismic performance of underground structures. Due to the existence of overlying soil layers, underground structures often bear greater overlying loads. Once damaged under earthquake action, the repair work faces great difficulties, which not only affects people's normal life, but also has the characteristics of difficult repair, long repair period, high construction cost, etc. compared with the repair of above-ground concrete building structures. At the same time, there is also a hidden danger of causing the collapse of surrounding above-ground buildings, resulting in a series of chain effects and serious consequences.

[0004] Currently, for the post-earthquake repair of underground concrete building structures, the generally adopted method is usually the integral cast-in-place reinforced concrete structure. Concrete has strong compressive capacity but insufficient tensile capacity. Steel bars have good tensile and shear resistance, but their weight and cost are relatively high. Pouring concrete on the tied steel bar cage combines the two to achieve complementary performance, with certain bearing capacity and seismic performance. However, once local plastic damage occurs in this cast-in-place integral structure, it is difficult to repair, and it is difficult to quickly restore to the original bearing capacity and seismic performance. Content of the Utility Model

[0005] Aiming at the deficiencies of the above-mentioned existing technologies, the utility model provides an outer wall-beam replaceable energy dissipation joint applied to underground structures, which is used for the post-earthquake repair of underground cast-in-place concrete buildings. It can concentrate and dissipate seismic energy, concentrate the damage on the replaceable components. When the components are damaged, only the replaceable components need to be disassembled to complete the structure repair work, so that the overall structure can quickly restore to the original performance, improve the bearing capacity and seismic capacity of the underground structure, and significantly shorten the repair period.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An exterior wall - beam replaceable energy - dissipating joint applied to underground structures, comprising a cast - in - place concrete structure, an I - shaped composite beam structure, and an energy - dissipating load - bearing composite structure. The cast - in - place concrete structure includes two relatively arranged and spaced cast - in - place concrete beams. The I - shaped composite beam structure is fixedly installed between the two cast - in - place concrete beams and is detachably connected to the cast - in - place concrete beams on both sides;

[0008] The energy - dissipating load - bearing composite structure is fixedly installed below the cast - in - place concrete beam and the I - shaped composite beam structure, and the energy - dissipating load - bearing composite structure is detachably connected to the cast - in - place concrete beams on both sides above respectively.

[0009] As a further implementation method, the cast - in - place concrete structure further includes a cast - in - place concrete exterior wall and a cast - in - place concrete floor slab. The cast - in - place concrete floor slab is fixedly arranged on one side of the cast - in - place concrete exterior wall, and the cast - in - place concrete beam is fixedly connected to the lower side of the cast - in - place concrete floor slab.

[0010] As a further implementation method, the I - shaped composite beam structure and the energy - dissipating load - bearing composite structure are respectively fixedly connected to the cast - in - place concrete beam structure through embedded bolts.

[0011] As a further implementation method, a number of concrete beam reserved holes are respectively opened on the side and bottom of the cast - in - place concrete beam. An I - shaped steel composite beam bolt is embedded at the concrete beam reserved hole on the side, and an embedded energy - dissipating load - bearing composite part bolt is embedded at the concrete beam reserved hole at the bottom, which are respectively used for fixedly connecting with the I - shaped composite beam structure and the energy - dissipating load - bearing composite structure.

[0012] As a further implementation method, reserved holes for the I - shaped steel composite beam are opened on both sides of the I - shaped composite beam structure. The I - shaped steel composite beam bolt cooperates with the concrete beam reserved hole on the side of the cast - in - place concrete beam and the reserved hole for the I - shaped steel composite beam to fixedly connect the I - shaped composite beam structure with the cast - in - place concrete beam, thereby realizing the installation of the I - shaped composite beam.

[0013] As a further implementation method, the I - shaped composite beam structure includes an I - shaped steel beam. Steel plates are fixedly installed on both sides of the I - shaped steel beam along the length direction, and the reserved holes for the I - shaped steel composite beam are processed on the steel plates.

[0014] As a further implementation method, the I - shaped steel beam is welded to the steel plate.

[0015] As a further implementation method, the energy - dissipating load - bearing composite structure includes a number of energy - dissipating rods arranged in parallel and energy - dissipating rod fixing parts fixedly connected to both ends of the energy - dissipating rods. The energy - dissipating rod fixing parts are fixedly connected to the cast - in - place concrete beam through the energy - dissipating load - bearing composite member bolts.

[0016] As a further implementation method, a number of reserved holes for energy dissipation bar fixing parts are longitudinally formed on the energy dissipation bar fixing part, and the bolts of the energy dissipation bearing combination are matched with the reserved holes of the concrete beam at the bottom of the cast-in-place concrete beam and the reserved holes of the energy dissipation bar fixing part to fixedly connect the energy dissipation bearing combination structure with the cast-in-place concrete structure.

[0017] As a further implementation method, the energy dissipation bar is welded to the energy dissipation bar fixing part.

[0018] Adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0019] 1. By adopting the I-shaped composite beam structure and the combination of the energy dissipation bearing combination structure and the cast-in-place reinforced concrete structure, the present utility model forms a new type of joint energy dissipation device, which not only strengthens the strength of the local concrete, but also improves the seismic energy dissipation of the overall structure. Under the action of an earthquake, this joint device can absorb most of the seismic energy and dissipate the energy, and can well adapt to the bearing capacity and shock absorption performance of the underground cast-in-place concrete building; among them, the I-shaped composite beam structure mainly plays the vertical bearing capacity, and the energy dissipation bearing combination structure mainly plays the elastic performance and the horizontal energy dissipation capacity, and can jointly dissipate the seismic energy, effectively improving the bearing capacity and seismic capacity of the underground structure; at the same time, both the I-shaped composite beam structure and the energy dissipation bearing combination structure are installed on the cast-in-place concrete structure in a detachable connection manner, which is convenient to replace the energy dissipation node for repair after earthquake damage, the process is simple, reducing the post-earthquake repair difficulty of the underground structure and shortening the repair cycle, and can realize the rapid improvement of the post-earthquake toughness of the underground frame structure.

[0020] 2. The I-shaped composite beam structure and the energy dissipation bearing combination structure of the present utility model are prefabricated parts, which can be assembled at the construction site after being manufactured in the factory, are convenient for transportation, and can replace the local structure of the energy dissipation node according to actual needs, with more flexible selection, which is beneficial to cost reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specification drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 2 It is a partial schematic diagram of the cast-in-place concrete structure of an embodiment of the present utility model;

[0024] Figure 3 It is a schematic diagram of the I-shaped composite beam structure of an embodiment of the present utility model;

[0025] Figure 4 Schematic diagram of the energy-consuming load-bearing combined structure according to an embodiment of the present utility model.

[0026] In the figure: 1, cast-in-place concrete structure; 11, cast-in-place concrete exterior wall; 12, cast-in-place concrete floor slab; 13, cast-in-place concrete beam; 14, reserved hole in the concrete beam.

[0027] 2, I-shaped combined beam structure; 21, I-shaped steel beam; 22, steel plate; 23, bolt for I-shaped combined beam; 24, reserved hole in the I-shaped combined beam.

[0028] 3, energy-consuming load-bearing combined structure; 31, energy-consuming bar; 32, fixing part of the energy-consuming bar; 33, reserved hole in the fixing part of the energy-consuming bar; 34, bolt for the energy-consuming load-bearing combined component. Detailed implementation manners

[0029] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0030] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0031] Embodiment 1

[0032] In a typical implementation manner of the present application, an exterior wall-beam replaceable energy-consuming joint applied to an underground structure is provided. As Figures 1-4 shown, it includes three parts: a cast-in-place concrete structure 1, an I-shaped combined beam structure 2, and an energy-consuming load-bearing combined structure 3. Among them, the cast-in-place concrete structure 1 includes two relatively arranged and spaced cast-in-place concrete beams 13. The I-shaped combined beam structure 2 is fixedly installed between the two cast-in-place concrete beams 13 and is detachably connected to the two side cast-in-place concrete beams 13. The energy-consuming load-bearing combined structure 3 is fixedly installed below the cast-in-place concrete beam 13 and the I-shaped combined beam structure 2, and the energy-consuming load-bearing combined structure 3 is respectively detachably connected to the two side cast-in-place concrete beams 13 above.

[0033] Specifically, as Figure 1 shown,2 As shown in the figure, the cast-in-place concrete structure 1 includes a cast-in-place concrete exterior wall 11, a cast-in-place concrete floor slab 12, and a cast-in-place concrete beam 13. The cast-in-place concrete exterior wall 11 is vertically arranged on-site, the cast-in-place concrete floor slab 12 is fixedly connected to one side of the cast-in-place concrete exterior wall and is horizontally arranged, and the cast-in-place concrete beam 13 is fixedly connected to the lower side of the cast-in-place concrete floor slab 12. In this embodiment, in order to realize the detachable installation of the I-shaped composite beam structure, two cast-in-place concrete beams 13 are provided. There is a certain interval between the two cast-in-place concrete beams 13 and they are symmetrically distributed. I-shaped steel composite beam reserved holes 14 are provided on the side surfaces of the cast-in-place concrete beams 13 close to each other. The I-shaped composite beam structure 2 is installed between the two cast-in-place concrete beams 13, and the I-shaped composite beam structure 2 is respectively bolted to the two side cast-in-place concrete beams 13; the energy-dissipating load-bearing composite member 3 is fixed to the bottom of the cast-in-place concrete beam by bolts.

[0034] Since bolt connectors are embedded on the left and right sides and the bottom of the cast-in-place concrete beam before pouring the concrete, and are integrally formed with the steel reinforcement cage of the cast-in-place concrete beam through tie bars, the stiffness of the connection area of the cast-in-place concrete beam is enhanced, so that the seismic energy is mainly concentrated on the replaceable I-shaped steel composite beam and the replaceable energy-dissipating load-bearing composite member, playing an energy-dissipating and shock-absorbing role and protecting the mechanical properties of the underground frame structure.

[0035] As Figure 2 shown, a number of concrete beam reserved holes 14 are respectively formed on the side surface and the bottom of the cast-in-place concrete beam 13. I-shaped steel composite beam bolts 23 are embedded at the concrete beam reserved holes on the side surface for installing the I-shaped composite beam structure 2, and energy-dissipating load-bearing composite member bolts 34 are embedded at the concrete beam reserved holes on the bottom for installing the energy-dissipating load-bearing composite structure 3.

[0036] Specifically, as Figure 3 shown, the I-shaped composite beam structure 2 includes an I-shaped steel beam 21. Steel plates 22 are respectively fixedly installed on both sides of the I-shaped steel beam 21 along the length direction. I-shaped steel composite beam reserved holes 24 are processed on the two steel plates 22. The I-shaped steel composite beam reserved holes 24 cooperate with the concrete beam reserved holes 14 on the side surface of the cast-in-place concrete beam and are connected and fixed by the embedded I-shaped steel composite beam bolts 23, so as to fixedly install the I-shaped composite beam structure under the cast-in-place concrete floor slab, ensuring convenient assembly and disassembly. Among them, in this embodiment, the I-shaped steel beam 21 is welded to the steel plate 22 and is prefabricated in the factory.

[0037] As Figure 4As shown in the figure, the energy-dissipating load-bearing composite structure 3 includes a plurality of energy-dissipating bars 31 arranged in parallel and energy-dissipating bar fixing members 32 fixedly connected to both ends of the energy-dissipating bars. The energy-dissipating bar fixing members 32 are welded to each energy-dissipating bar 31 and can be prefabricated in a factory. A plurality of reserved holes 33 for energy-dissipating bar fixing members are longitudinally formed on the energy-dissipating bar fixing members 32. The reserved holes 33 for energy-dissipating bar fixing members cooperate with the reserved holes 14 at the bottom of the cast-in-place concrete beam and are fixedly connected by embedded bolts 34 of the energy-dissipating load-bearing composite member, so as to fixedly install the energy-dissipating load-bearing composite structure under the cast-in-place concrete beam, which is convenient for assembly and disassembly.

[0038] The working principle of this embodiment is as follows:

[0039] As Figures 1-4 shown in the figure, the I-shaped composite beam structure has strong vertical load-bearing capacity. At the same time, combined with the energy-dissipating load-bearing composite structure at the bottom, the overall load-bearing performance of the joint is further enhanced, and the overall seismic ductility of the structure can be improved.

[0040] Among them, under the action of static load, the load is mainly borne by the I-shaped composite beam structure, and the energy-dissipating load-bearing composite structure is auxiliary. Under the action of seismic load, the energy-dissipating load-bearing composite structure combines with the I-shaped composite beam structure to jointly dissipate seismic energy: during small earthquakes, the energy-dissipating load-bearing composite structure exerts elastic performance and horizontal energy-dissipating ability, and the I-shaped composite beam structure exerts vertical load-bearing ability. The combination of the two makes the overall energy-dissipating structure in a non-damaged state; during medium and large earthquakes, the two jointly exert vertical and horizontal load-bearing abilities to dissipate seismic energy. If the two components undergo plastic deformation and reach a damaged state after the earthquake, they can be disassembled and new joints can be replaced, so that the structure can quickly recover its original performance in a short time.

[0041] Compared with the existing replaceable joints of concrete structures, the replaceable energy-dissipating joints provided in this embodiment adopt the method of replacing part of the concrete beam with an I-shaped steel beam, so that the joint has reliable bearing capacity and good seismic ductility, and is convenient for installation and disassembly, greatly improving the post-earthquake repair ability, and can realize the rapid improvement of the post-earthquake toughness of the underground frame structure.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those of ordinary skill in the art should understand that the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An external wall - beam replaceable energy - dissipating joint applied to underground structures, characterized in that, It includes a cast-in-place concrete structure, an I-shaped composite beam structure, and an energy-dissipating load-bearing composite structure. The cast-in-place concrete structure includes two cast-in-place concrete beams that are oppositely arranged with a gap therebetween. The I-shaped composite beam structure is fixedly installed between the two cast-in-place concrete beams and is detachably connected to the cast-in-place concrete beams on both sides. The energy-dissipating load-bearing composite structure is fixedly installed below the cast-in-place concrete beam and the I-shaped composite beam structure, and the energy-dissipating load-bearing composite structure is detachably connected to the cast-in-place concrete beam above.

2. The replaceable energy-dissipating joint of the external wall-beam applied to the underground structure according to claim 1, wherein The I-shaped composite beam structure and the energy-dissipating load-bearing composite structure are respectively fixedly connected to the cast-in-place concrete beam structure through embedded bolts.

3. The replaceable energy-dissipating joint for the exterior wall-beam applied to the underground structure according to claim 1, characterized in that The cast-in-place concrete structure further includes a cast-in-place concrete exterior wall and a cast-in-place concrete floor slab. The cast-in-place concrete floor slab is fixedly arranged on one side of the cast-in-place concrete exterior wall, and the cast-in-place concrete beam is fixedly connected to the lower side of the cast-in-place concrete floor slab.

4. The replaceable energy dissipation joint of external wall-beam applied to underground structures as claimed in claim 1, wherein, A number of concrete beam reserved holes are respectively formed in the side and bottom of the cast-in-place concrete beam. An I-shaped steel composite beam bolt is embedded at the concrete beam reserved hole on the side, and an embedded energy-dissipating load-bearing composite part bolt is embedded at the concrete beam reserved hole on the bottom, which are respectively used for fixedly connecting with the I-shaped composite beam structure and the energy-dissipating load-bearing composite structure.

5. The replaceable energy-dissipating joint of external wall-beam applied to underground structures according to claim 4, characterized in that, I-shaped steel composite beam reserved holes are formed on both sides of the I-shaped composite beam structure. The I-shaped steel composite beam bolt cooperates with the concrete beam reserved hole on the side of the cast-in-place concrete beam and the I-shaped steel composite beam reserved hole to fixedly connect the I-shaped composite beam structure with the cast-in-place concrete beam.

6. The replaceable energy-dissipating joint for external wall-beam applied to underground structures according to claim 5, wherein The I-shaped composite beam structure includes an I-shaped steel beam. Steel plates are fixedly installed on both sides of the I-shaped steel beam along the length direction, and the I-shaped steel composite beam reserved holes are processed on the steel plates.

7. The replaceable energy dissipation joint of the external wall-beam applied to the underground structure according to claim 6, wherein, The I-shaped steel beam is welded to the steel plate.

8. The replaceable energy dissipation joint for the exterior wall - beam applied to the underground structure according to claim 4, characterized in that, The energy-dissipating load-bearing composite structure includes a number of energy-dissipating rods arranged in parallel and energy-dissipating rod fixing parts fixedly connected to both ends of the energy-dissipating rods. The energy-dissipating rod fixing parts are fixedly connected to the cast-in-place concrete beam through energy-dissipating load-bearing composite bolts.

9. The replaceable energy-dissipating joint for external wall-beam applied to underground structures according to claim 8, characterized in that, A number of energy-dissipating rod fixing part reserved holes are longitudinally formed on the energy-dissipating rod fixing parts. The energy-dissipating load-bearing composite part bolt cooperates with the concrete beam reserved hole on the bottom of the cast-in-place concrete beam and the energy-dissipating rod fixing part reserved hole to fixedly connect the energy-dissipating load-bearing composite structure with the cast-in-place concrete structure.

10. The replaceable energy-dissipating joint of external wall-beam applied to underground structures according to claim 8, characterized in that, The energy-dissipating rod is welded to the energy-dissipating rod fixing part.

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