CN215106439U - Floor slab connection node capable of guaranteeing normal operation of coupling beam damper - Google Patents

Abstract

The utility model discloses a floor slab connection node capable of ensuring the normal operation of a coupling beam damper, which comprises two coupling beams which are oppositely arranged, wherein a gap is arranged between the two coupling beams, and RC floor slabs are poured on the two coupling beams; the end face of one connecting beam facing to the other connecting beam is fixedly connected with a first end plate, the first end plate is provided with a second end plate, a damper is fixedly connected between the two second end plates, longitudinal joints are arranged between the connecting beam and the RC floor along the length direction of the connecting beam, and filling layers are filled in the longitudinal joints. The floor slab connection node enables the floor slab and the coupling beam to independently deform, and releases the restraint of the RC floor slab on the deformation of the coupling beam damper, so that the damper can fully dissipate seismic energy; reducing floor deformation so that the actual stress is closer to the structural calculation assumption; even if the floor slab is less damaged under the condition that the deformation of the connecting beam is larger, the normal use of the floor slab can be ensured, and the repair cost after the earthquake is greatly reduced.

Description

Floor slab connection node capable of guaranteeing normal operation of coupling beam damper

Technical Field

The utility model belongs to the technical field of the novel floor connected mode of building, a can guarantee even floor connected node of roof beam attenuator normal operating is related to.

Background

The earthquake-resistant structure in the prior art resists earthquake by enhancing the earthquake-resistant performance of the structure, namely, earthquake energy is passively and passively resisted by the structure to store and dissipate earthquake energy, so that the structural earthquake fortification standard is met. When an earthquake occurs, a large amount of seismic energy is input into the structure, which absorbs and dissipates this energy through energy conversion. In the structure energy dissipation and shock absorption technology, energy dissipation devices are arranged at certain parts of a structure, and a large amount of energy input into the structure is absorbed and dissipated by the energy dissipation devices firstly during earthquake so as to attenuate the earthquake reaction of a building. The damper is a device which is arranged on a structural system and can consume motion energy, plays a vital role in the fields of energy consumption, shock absorption, seismic reinforcement and the like, and becomes one of common components in modern seismic buildings.

The connecting beam is used as an important anti-seismic energy dissipation component in a shear wall system, and the performances of rigidity, strength, ductility, energy dissipation and the like of the connecting beam have important influence on the whole structure. The span-height ratio of the coupling beam in actual engineering is usually smaller, and earthquake damage results and experimental researches show that the conventional earthquake-proof design method cannot avoid shearing damage, the concept of 'strong shearing and weak bending' of earthquake resistance specification is difficult to realize, the test values and the design values of the rigidity and the bearing capacity of the coupling beam are difficult to be matched, and the mechanical properties and the earthquake-proof performance of the whole component and the structure are difficult to control according to the design. In recent years, researchers have continuously improved and innovated the coupling beam, and the coupling beam is endowed with better earthquake-resistant performance by using new design schemes and materials, adding other components or integrating a novel structural form and other means.

The coupled beam damper is characterized in that the damper is arranged in a coupled beam span, the coupled beam span generates large vertical deformation under the action of an earthquake, and the two ends of the damper connected with the end plates on the two sides are in up-and-down staggered deformation, so that energy consumption is realized. The connection beam damper is easy to replace after earthquake after being damaged, however, in the prior art, the connection beam and the RC floor slab are integrally poured into a whole, so that the deformation of the damper in earthquake is restrained by the floor slab, and the energy consumption degree of the damper is limited.

Disclosure of Invention

The utility model aims at providing a deformation of attenuator in the earthquake does not receive the floor restraint, can not restrict the floor connected node that can guarantee even roof beam attenuator normal operating of attenuator power consumption degree of attenuator.

In order to achieve the above object, the utility model adopts the following technical scheme: a floor slab connection node capable of ensuring normal operation of a coupling beam damper comprises two coupling beams which are oppositely arranged, a gap is formed between the two coupling beams, and RC floor slabs are poured on the two coupling beams; the end face of one connecting beam facing to the other connecting beam is fixedly connected with a first end plate, the first end plate is provided with a second end plate, a damper is fixedly connected between the two second end plates, longitudinal joints are arranged between the connecting beam and the RC floor along the length direction of the connecting beam, and filling layers are filled in the longitudinal joints.

This practical floor connected node has following advantage:

1) the longitudinal joint is arranged at the junction of the connecting beam and the RC floor slab in the length direction of the connecting beam, so that the floor slab and the connecting beam deform independently, the restraint of the RC floor slab on the deformation of the connecting beam damper is released, and the damper can fully dissipate seismic energy.

2) The connecting beam and the RC floor slab are provided with a longitudinal seam at the junction of the connecting beam in the length direction, and a hinge is formed at the seam similarly, so that the deformation of the floor slab is reduced, and the actual stress is closer to the structural calculation assumption (rigid floor assumption).

3) The connecting beam and the RC floor slab are provided with the longitudinal joint at the junction of the connecting beam in the length direction, so that the floor slab and the connecting beam are independently deformed, even if the floor slab is less damaged under the condition of larger deformation of the connecting beam, the normal use of the floor slab can be ensured, and the repairing cost after the earthquake is greatly reduced.

Drawings

FIG. 1 is a schematic view of a prior art link beam damper.

Fig. 2 is a schematic view of a deformation of a building in which the link beam damper shown in fig. 1 is installed.

Figure 3 is a schematic view of the building of figure 2 after deformation of the beam damper installed in the building in cooperation with the floor slab.

Fig. 4 is a schematic view of the first embodiment of the floor slab connection of the present invention.

Fig. 5 is a sectional view a-a of fig. 4.

Fig. 6 is a schematic view of a second embodiment of the floor slab connection of the present invention.

Fig. 7 is a sectional view B-B of fig. 6.

In the figure: 1. the wall comprises wall limbs, 2 connecting beams, 3 first end plates, 4 second end plates, 5 dampers, 6 RC floor slabs and 7 filling layers.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the beam connecting damper in the prior art includes two connecting beams 2 respectively fixedly connected to two wall limbs 1, a gap is formed between the two connecting beams 2, and an RC floor 6 is cast on the two connecting beams 2; the end face of one connecting beam 2 facing to the other connecting beam 2 is fixedly connected with a first end plate 3, the first end plate 3 is provided with a second end plate 4, and a damper 5 is fixedly connected between the two second end plates 4.

The building in which the link beam damper shown in fig. 1 is installed is deformed when an earthquake is encountered, as shown in fig. 2. The structural integrity calculation is based on rigid floor assumption, which means that the rigidity in the plane of the floor is assumed to be infinite, and the rigidity outside the plane is zero. Most of the floors of projects in current designs can conform to the assumption of rigid floors. However, in the prior art, the coupling beam 2 and the RC floor 6 at the two ends of the coupling beam damper are integrally cast, so that the coupling beam damper is subjected to shear deformation under the action of an earthquake, and the RC floor 6 connected with the coupling beam 2 is also subjected to large deformation, as shown in fig. 3. The in-plane rigidity of the deformed RC floor slab 6 is not infinite any more, so that the actual working condition is not consistent with the calculation assumption, and the analysis results of the whole structure and related components are directly influenced. Meanwhile, due to the interaction between the RC floor slabs 6 and the connecting beams 2 in the prior art, the deformation capacity of the connecting beam damper is restrained by the RC floor slabs 6 in the relevant range, so that the connecting beam damper cannot fully exert the energy consumption function.

In order to overcome the problem that even roof beam attenuator that exists can not full play its power consumption effect among the prior art, the utility model provides a can guarantee even floor connected node of roof beam attenuator normal operating.

The utility model discloses the first embodiment of floor connection mode, as shown in fig. 4 and 5. The structure of this first embodiment is substantially the same as that of the prior art link beam damper, and the difference between the two is that: the utility model discloses in the first embodiment of floor connected node, all be equipped with the longitudinal joint between 2 length direction along even roof beam, even 2 both sides of roof beam and the RC floor 6, all filled with filling layer 7 in these two longitudinal joints, filling layer 7 is polymer organic polymer, preferred polystyrene.

The utility model discloses still provide as the second kind of embodiment of the novel floor connected mode shown in figure 6 and figure 7, in the structure of this second kind of embodiment, RC floor 6 is the unilateral, that is to say removes one with two RC floors 6 in the first kind of embodiment, only leaves one RC floor 6 of unilateral, is equipped with the longitudinal joint along 2 length direction on the roof beam, even between 2 and this RC floors 6 on the roof beam, and this longitudinal joint intussuseption is filled with filling layer 7, and filling layer 7 is polymer organic, preferred polystyrene.

The damper 5 is a shear type metal damper, which is a displacement-dependent damper, and can be replaced by other displacement-dependent dampers, for example: shape memory alloy dampers, mild steel dampers, etc., may also be replaced by other velocity dependent dampers, such as: viscoelastic shearing energy-consuming dampers and the like.

In the prior art, the structural integral calculation is based on rigid floor assumption, and the meaning is that the rigidity in a floor plane is assumed to be infinite, and the rigidity outside the plane is zero. Most of the floors of projects currently in design can conform to the assumptions of rigid floors. However, in the prior art, the connecting beam 3 at the two ends of the connecting beam damper and the RC floor 6 are integrally cast into a whole in a fixed connection mode, the connecting beam damper generates shear deformation under the action of an earthquake, the RC floor 6 connected with the connecting beam 2 also generates large deformation, and the in-plane rigidity of the deformed floor is not infinite any more, so that the actual working condition is inconsistent with the calculation assumption, and the analysis results of the integral structure and related components are directly influenced. Meanwhile, the RC floor 6 and the coupling beam 2 have interaction, and the deformation capacity of the coupling beam damper is restrained by the floor in a relevant range, so that the coupling beam damper cannot fully exert the energy consumption function.

The utility model discloses along 2 length direction on even roof beam, set up the longitudinal joint between even roof beam 2 and RC floor, make RC floor 6 and even roof beam 2 independently warp, released the restraint that RC floor 6 warp even roof beam attenuator, made the attenuator can fully dissipate seismic energy. Under the action of larger reciprocating deformation, the RC floor 6 in the prior art can crack or even peel off concrete, and reinforcing steel bars in the floor can be possibly buckled or even damaged, so that great difficulty is brought to quick recovery of the structural function after an earthquake. And this practical longitudinal joint in the floor connected node is similar to forming a hinge in the department that cracks, reduces the floor and warp, guarantees floor plane internal rigidity, makes operating condition more accord with the rigid floor assumption. The deformation capability of the floor slab with the cracks is obviously improved, the maximum crack length is obviously reduced, and the damage of the floor slab is well controlled.

Claims (3)

1. A floor slab connection node capable of ensuring normal operation of a coupling beam damper comprises two coupling beams (2) which are oppositely arranged, a gap is formed between the two coupling beams (2), and RC floor slabs (6) are poured on the two coupling beams (2); the end face, facing to the other connecting beam (2), of one connecting beam (2) is fixedly connected with a first end plate (3), a second end plate (4) is mounted on the first end plate (3), a damper (5) is fixedly connected between the two second end plates (4), and the damper is characterized in that longitudinal seams are arranged in the length direction of the connecting beam (2) and between the connecting beam (2) and an RC floor slab (6), and filling layers (7) are filled in the longitudinal seams.

2. A floor slab connection node capable of ensuring the normal operation of a coupling beam damper according to claim 1, wherein the number of the longitudinal slits is one or two.

3. A floor slab connection node capable of ensuring the normal operation of a coupling beam damper according to claim 1, wherein the filling layer (7) is filled with a high molecular organic polymer.

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