Fabricated energy dissipation beam

Abstract

The utility model provides an assembly type energy dissipation beam which comprises two end plates, a plurality of steel bars connected between the two end plates, a plurality of stirrups hooped on the steel bars to form a steel reinforcement cage, a plastic pipe arranged in the steel reinforcement cage, and a UHPC elastic ball placed in the plastic pipe, wherein the two ends of the UHPC elastic ball abut against the end plates respectively. A main body of the poured energy dissipation beam comprises reinforced concrete and UHPC elastic balls, the structural self weight of the member is reduced, and materials are easy to obtain; the reinforcing steel bars and the high-strength concrete are jointly stressed, the bearing capacity is high, and the good mechanical property is achieved; the UHPC elastic balls interact with one another, energy generated under the earthquake action can be reduced, energy consumption of the structure is promoted, and earthquake damage is relieved; the end plate is welded with the reinforcement sleeve, so that the reinforcement cage is conveniently connected with the end plate, and the integrity of the component is improved; the plastic pipe serves as a formwork for pouring concrete inside, the economical efficiency of the component can be improved, and the plastic pipe can prevent the springs in the plastic pipe from being rusted and prevent the component from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to an assembled energy-absorbing beam. Background Art

[0002] With the transformation and upgrading of the building industry structure, in order to improve the seismic performance of building structures, speed up construction, and achieve energy conservation and environmental protection, assembled energy-consuming structural components have become increasingly prominent. Compared with traditional concrete beams, the existing new energy-consuming beams use the form of beam end energy consumption. Although it has obvious technical advantages, it improves construction efficiency, uses high-strength concrete, meets strong node requirements, and consumes energy through energy-absorbing parts at the beam ends to improve seismic resistance. However, it also has the following shortcomings: the energy consumption capacity of the beam end energy consumption is poor, the seismic resistance is limited, and the structure is relatively complex. Utility Model Content

[0003] The utility model discloses an assembled energy-absorbing beam to solve the above problem.

[0004] The utility model adopts the following scheme:

[0005] The present application provides an assembled energy-absorbing beam, comprising two end plates, a plurality of steel bars connected between the two end plates, a plurality of stirrups arranged on the steel bars to form a steel cage, a plastic pipe arranged in the steel cage, the two ends of which respectively abut against the end plates, and a UHPC elastic ball placed in the plastic pipe;

[0006] The end plate is placed on one side of the steel cage and is provided with a connecting piece, a shear bolt and a spring, the connecting piece is arranged on the outer peripheral side of the end plate; the shear bolt is placed in the steel cage and outside the plastic pipe; the spring is placed outside the plastic pipe; a connecting beam is arranged on the other side of the end plate; high-strength concrete is poured on the steel cage.

[0007] Furthermore, the connecting piece is a steel sleeve, which is used to connect the steel bars of the steel cage.

[0008] Furthermore, the end plate is provided with a platform on one side of the steel cage, which is placed between the spring and the steel bars below the spring.

[0009] Furthermore, the connecting beam is an I-shaped steel beam; the I-shaped steel beam includes flange plates arranged on upper and lower sides, and a web plate connected between the two flange plates; and screw through holes are provided on the flange plates and the web plate.

[0010] Furthermore, the plastic tube is a PVC plastic tube.

[0011] Furthermore, the end plate is square.

[0012] Furthermore, after high-strength concrete is poured on the steel cage, its cross-section is consistent with the outer dimensions of the end plate.

[0013] Beneficial effects: The following technical effects can be achieved through the solution of the utility model:

[0014] (1) The main body of the cast energy-absorbing beam consists of reinforced concrete and UHPC elastic balls. This component reduces the deadweight of the structure and is simple to make. It uses steel bars and high-strength concrete to bear the force together, has a strong bearing capacity, and has good mechanical properties. The interaction between the UHPC elastic balls can reduce the energy generated by earthquakes, promote structural energy dissipation, and reduce earthquake damage.

[0015] (2) The end plate is welded with a steel sleeve to facilitate the connection between the steel cage and the end plate and improve the integrity of the component.

[0016] (3) Plastic pipes are used as templates for internal pouring of concrete, which can improve the economy of components. Plastic pipes can also prevent the internal springs from rusting and damaging the performance of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly structure of an end plate portion of an assembled energy-absorbing beam in an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of a partially assembled structure of an assembled energy-absorbing beam without concrete pouring in an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of a partially cut-away assembly structure of an assembled energy-absorbing beam after concrete pouring in an embodiment of the utility model;

[0020] Icons: end plate 1, steel sleeve 2, shear stud 3, spring 4, platform 5, flange plate 6, web 7, screw through hole 8, steel bar 9, stirrups 10, plastic pipe 11, UHPC elastic ball 12, high-strength concrete 13. DETAILED DESCRIPTION

[0021] Example

[0022] Combination Figures 1 to 3 As shown, this embodiment provides an assembled energy-absorbing beam, comprising two end plates 1, a plurality of steel bars 9 connected between the two end plates 1, a plurality of stirrups 10 hooped on the steel bars 9 to form a steel cage, a plastic pipe 11 disposed in the steel cage, the two ends of which respectively abut against the end plates 1, and a UHPC elastic ball 12 placed in the plastic pipe 11;

[0023] The end plate 1 is placed on one side of the steel cage and is provided with a connecting piece, a shear bolt 3 and a spring 4, the connecting piece is arranged on the outer peripheral side of the end plate 1; the shear bolt 3 is placed in the steel cage and outside the plastic pipe 11; the spring 4 is placed outside the plastic pipe 11; a connecting beam is provided on the other side of the end plate 1; high-strength concrete 13 is poured on the steel cage.

[0024] Specifically, in this embodiment, the end plate 1 is square; the end plate 1 is provided with a steel sleeve 2 on the outer periphery of one side of the steel cage, which is convenient for connecting the steel bars 9 of the steel cage. The connecting beam is an I-shaped steel beam; the I-shaped steel beam includes flange plates 6 placed on the upper and lower sides, and a web plate 7 connected between the two flange plates 6; and screw holes 8 are provided on the flange plates 6 and the web plate 7, which are convenient for connecting the two ends of the beam-column assembly during construction. The plastic pipe 11 is a PVC plastic pipe 11; it can be used as a template for pouring concrete inside, which can improve the economic type of the component, and the PVC plastic pipe 11 can prevent the spring 4 in the box section from rusting and prevent the component from being damaged. The end plate 1 is provided with a platform 5 on one side of the steel cage, which is placed between the spring 4 and the steel bars 9 below the spring 4, which can form a limiting effect on the PVC plastic pipe 11, which is convenient for the placement of the PVC plastic pipe 11. After the high-strength concrete 13 is poured on the steel cage, its cross-section is consistent with the outer size of the end plate 1. In this embodiment, the end plate 1 is provided with four springs 4, which are arranged at a suitable spacing to ensure that the elastic ball can rebound reasonably after impact. By properly calculating the steel plate ratio and using high-strength concrete 13, the bearing capacity of the beam compression zone can be increased without affecting the ductility of the beam.

[0025] The UHPC elastic ball 12 is an elastic ball cast with ultra-high performance concrete, which is composed of cement, quartz sand, water, mineral admixtures, chemical admixtures such as high-efficiency water reducing agent and steel fiber to form a matrix, and its strength is greater than 120Mpa.

[0026] The main body of the poured energy-absorbing beam includes steel bars 9, concrete and UHPC elastic balls 12. The component reduces the deadweight of the structure and is simple to obtain. The steel bars 9 and high-strength concrete 13 are jointly subjected to force, so the bearing capacity is strong and the mechanical properties are good. The interaction of the UHPC elastic balls 12 can reduce the energy generated by earthquakes, promote structural energy consumption and reduce earthquake damage. The end plate 1 is welded with a steel sleeve 2 to facilitate the connection between the steel cage and the end plate 1 and improve the integrity of the component. The plastic pipe 11 is used as a template for pouring concrete inside, which can improve the economy of the component, and the plastic pipe 11 can prevent the inner spring 4 from rusting and prevent damage to the component.

[0027] The construction method of the assembled energy-absorbing beam is described in detail below, which includes the following steps:

[0028] S1: Prefabrication of I-shaped steel beams;

[0029] According to the beam section design calculation requirements, select a suitable steel plate size to be processed into the web plate 7 and the flange plate 6; secondly, set the screw through holes 8 at a suitable interval on the processed steel plate; finally, weld the flange plate 6 and the web plate 7 to form the I-shaped steel beam with an I-shaped cross section;

[0030] S2: prefabrication of end plate 1;

[0031] According to the beam section design calculation requirements, a suitable steel plate size is selected to be processed into the end plate 1 of a suitable cross-sectional size, and then the steel sleeve 2 is arranged at a suitable interval on the outer periphery of one end surface of the end plate 1, and the spring 4 and the shear stud 3 are arranged on the end plate 1 at a suitable interval; and then the I-shaped steel beam is welded to the other end surface of the end plate 1;

[0032] S3: prefabrication of the steel cage; setting the steel cage by tying the longitudinal steel bars 9 and the stirrups 10;

[0033] S4: Overall assembly and prefabrication of energy-absorbing beams;

[0034] The steel bars 9 at one end of the steel cage are connected to the steel sleeves 2 on one of the end plates 1, and then the plastic pipe 11 is placed, and the UHPC elastic ball 12 is placed in the plastic pipe 11, and then the steel bars 9 at the other end of the steel cage are connected to the steel sleeves 2 on the other end plate 1; finally, formwork is supported and high-strength concrete 13 is cast for maintenance.

[0035] It should be noted that the prefabrication of the I-shaped steel beam, the prefabrication of the end plate 1 and the prefabrication of the steel cage in steps S1-S3 can be carried out simultaneously in the prefabrication plant, and then assembled and cast at the end, which greatly improves the efficiency of the construction and speeds up the progress of the construction.

[0036] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0037] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. An assembled energy-absorbing beam, characterized in that: It includes two end plates, a plurality of steel bars connected between the two end plates, a plurality of stirrups arranged on the steel bars to form a steel cage, a plastic pipe arranged in the steel cage, the two ends of which respectively abut against the end plates, and a UHPC elastic ball placed in the plastic pipe; The end plate is placed on one side of the steel cage and is provided with a connecting piece, a shear bolt and a spring, the connecting piece is arranged on the outer peripheral side of the end plate; the shear bolt is placed in the steel cage and outside the plastic pipe; the spring is placed outside the plastic pipe; a connecting beam is arranged on the other side of the end plate; high-strength concrete is poured on the steel cage.

2. The assembled energy-absorbing beam according to claim 1, characterized in that: The connecting piece is a steel bar sleeve, which is used to connect the steel bars of the steel bar cage.

3. The assembled energy-absorbing beam according to claim 1, characterized in that: The end plate is placed on one side of the steel cage and is provided with a platform, which is placed between the spring and the steel bars below the spring.

4. The assembled energy-absorbing beam according to claim 1, characterized in that: The connecting beam is an I-shaped steel beam; the I-shaped steel beam includes flange plates arranged on upper and lower sides, and a web plate connected between the two flange plates; and screw through holes are arranged on the flange plates and the web plates.

5. The assembled energy-absorbing beam according to claim 1, characterized in that: The plastic tube is a PVC plastic tube.

6. The assembled energy-absorbing beam according to claim 1, characterized in that: The end plate is square.

7. The assembled energy-absorbing beam according to claim 1, characterized in that: After high-strength concrete is poured on the steel cage, its cross section is consistent with the outer dimensions of the end plate.

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