CN208009751U - Light-duty multilayer steel-concrete-steel clamp core combined shear wall column component - Google Patents

Abstract

The utility model discloses a light-duty multi-layer steel-concrete-steel sandwich combined shear wall column member, comprising: a steel pipe concrete member and a sandwich composite wall panel member, the steel pipe concrete member includes an outsourcing steel pipe, steel concrete, and an outsourcing steel pipe package Overlay on steel-concrete; sandwich composite wall panel components include: at least three steel plates, lapable shear studs and lightweight rubber-modified fiber concrete, at least three steel plates are arranged in parallel, and two adjacent steel plates are opposite to each other Lapable shear nails are evenly arranged on each side, and a filling space is formed between two adjacent steel plates. Light rubber modified fiber concrete is filled in the filling space and the lapable shear nails are covered; it also includes The steel backing plate, the end face of the sandwich composite wall panel member is connected with the steel tube concrete member through the steel backing plate. The utility model has the characteristics of light weight, high integrity, ductility and toughness, excellent extreme load resistance, long service time, simple and convenient manufacturing process, and improved construction efficiency.

Description

Light multi-layer steel-concrete-steel sandwich composite shear wall column member

technical field

The utility model belongs to the technical field of construction engineering and combined structures, and in particular relates to a light multi-layer steel with light weight, which reduces the earthquake response of high-rise buildings, improves integrity and shock resistance, simplifies the manufacturing process, reduces labor costs, and improves construction efficiency. - Concrete-steel sandwich composite shear wall column members.

Background technique

Shear walls or cylinders composed of shear walls are the main lateral force-resisting components of high-rise/super high-rise buildings. Under the earthquake, the shear wall not only bears most of the seismic shear force, but also plays an important role in dissipating seismic energy. The quality of its seismic performance plays a decisive role in the seismic performance of the entire structure. Therefore, the research on the seismic performance of shear walls is of great significance for improving the overall seismic performance of high-rise and super high-rise structures. However, the traditional steel-concrete-steel sandwich composite shear wall (also known as double-steel plate shear wall) is filled with ordinary concrete and has a large weight. The concrete density of the traditional lightweight aggregate structure is still high (1800-2000kg/m3). Moreover, the poor ductility limits its application in engineering; the design of the early steel plate shear wall structural system is based on elastic buckling as the limit state, so the steel plate shear wall is often very thick, and the wall that is too thick reduces the The usable area of the building, especially for the commercial ground floor, restricts the flexibility of the building layout and affects the use function; the double-steel composite shear wall generally includes a double-steel composite shear wall with tension bolts on both sides, and studs or studs on the inside of the wall panels. Double-steel composite shear walls with hole stiffeners, etc.; double-steel composite shear walls with tension bolts on both sides. In order to prevent the buckling of the steel plates, prefabricated concrete slabs are often used to wrap the steel plates and use the cross-bolts to constrain the steel plates to achieve the limit. The buckling of the steel plate outside the surface improves its energy dissipation capacity, such as patent CN 202755656 U; the double steel plate shear wall with studs installed on the inside of the wall plate welds the studs on the inner side of the steel plate, so that the steel and concrete work together to improve ductility and seismic performance. However, in order to ensure a strong combination effect, densely welded studs are required, which will cause difficulties in concrete pouring construction, such as patent CN 201972268 U; the double steel plate combined shear wall with hole stiffeners uses hole stiffeners instead of traditional studs to strengthen The coupling and synergy between concrete and steel plates can effectively enhance the damping effect of the shear wall system during the stress process, such as patent CN 204401821 U, but the amount of welding is too large.

In summary, the traditional steel-concrete-steel sandwich composite shear wall has the following characteristics:

1. Traditional lightweight concrete has low strength, brittle performance, and weak energy dissipation capacity, which limits its application in engineering.

2. The design of the traditional steel plate shear wall structure system is based on elastic buckling as the limit state. In this way, the thickness of the steel plate shear wall is often relatively large, so the self-weight of the wall structure is too large, which is not conducive to earthquake resistance, and at the same time increases the cost of the foundation. In addition, the thicker walls reduce the building use area, especially for the ground floor of commercial buildings, which restricts the flexibility of building layout and affects the use function.

3. Double-steel plate shear walls or constrained steel plate shear walls with opposite bolts are used. The bolts protrude from the wall surface, and the wall surface is uneven, which makes decoration difficult, and the perforated part is prone to stress concentration under the action of earthquake load; under high temperature, Nuts may burst, thus losing the effect of restraining the steel plate and concrete; the double-steel plate composite shear wall of the stiffener is cumbersome to construct, and the amount of welding of the stiffener is large, which is likely to cause fatigue problems; The combination effect of concrete is not high. Under extreme load, steel and concrete are easy to separate, and the transverse shear resistance is weak and the integrity is poor;

4. Anti-buckling anti-seismic energy-dissipating shear walls are mainly used to dissipate earthquake energy and not bear vertical loads at the same time.

Utility model content

The purpose of this utility model is to provide a light weight multi-layer steel-concrete-steel sandwich combination which reduces the seismic response of high-rise buildings, improves integrity and earthquake resistance, simplifies the manufacturing process, reduces labor costs, and improves construction efficiency. Shear wall column members.

In order to achieve the above purpose, the technical solution provided by the utility model is to provide a light-duty multi-layer steel-concrete-steel sandwich composite shear wall column member, including: a steel tube concrete member and a sandwich composite wall panel member, the sandwich composite Both ends of the wall panel member are connected to the steel pipe concrete member;

The steel pipe concrete member includes an outsourcing steel pipe and steel-concrete, and the outsourcing steel pipe is covered outside the steel-concrete;

The sandwich composite wallboard component includes: at least three steel plates, lapable shear nails and lightweight rubber-modified fiber concrete, the at least three steel plates are arranged in parallel, and the opposite sides of two adjacent steel plates are respectively The lappable shear nails are evenly arranged, and a filling space is formed between two adjacent steel plates, and the lightweight rubber-modified fiber concrete is filled in the filling space and the lappable shear nails Force nails for cladding;

It also includes a steel backing plate, through which both ends of the sandwich composite wall panel member are connected to the steel tube concrete member.

One side of the steel backing plate is welded to the end face of the sandwich composite wall panel member, and the other side is welded to the outer surface of the outer-wrapped steel pipe.

It also includes cylindrical shear studs, and the overlapping shear studs and cylindrical shear studs are evenly arranged on the opposite sides of two adjacent steel plates.

The lappable shear studs and cylindrical shear studs are evenly welded to the opposite sides of two adjacent steel plates

The overlapping shear studs welded on the opposite sides of two adjacent steel plates are overlapped and arranged together; while the cylindrical shear studs welded on the opposite sides of two adjacent steel plates are Mirror symmetrical structure layout.

The lapable shear nail is a J-shaped shear nail, one end of the vertical part of the J-shaped shear nail is welded to the side of the steel plate, and the other end is bent to form a hook shape.

One end of the cylindrical shear stud is welded to the side of the steel plate, and the other end is connected to a circular platform with an integral structure.

Compared with the prior art, because in the utility model light multi-layer steel-concrete-steel sandwich composite shear wall column member:

(1) The lightweight rubber-modified fiber concrete used as the core layer has good impact resistance;

(2) The lightweight rubber modified fiber concrete used has light weight, high strength (density 1000-1500kg/m3, compressive strength up to 60MPa), excellent sound insulation and heat insulation effects, and good crack resistance and wear resistance And deformation performance, anti-aging, anti-permeation and anti-freezing performance are superior, in addition, high-temperature anti-burst performance is good;

(3) Adding rubber powder made from waste tires to concrete can realize non-polluting treatment and recycling of waste tires. Rubber powder mixed into concrete can effectively fill concrete voids, restrain the development of cracks, and improve the concrete damping coefficient , to improve its anti-dynamic load performance;

(4) Rubber powder, as an elastic body, absorbs strain energy and consumes external energy during the stress process of concrete;

(5) Steel modified fiber or polypropylene modified fiber is mixed with rubber concrete to improve its compressive strength, tensile strength and toughness;

(6) The joint performance of lightweight rubber-modified fiber concrete and steel plates is achieved through new hybrid studs (J-shaped shear studs, cylindrical shear studs). J-shaped shear studs mainly rely on the interlocking effect to connect two adjacent pieces The steel plate bears the transverse shear force, and the cylindrical shear stud mainly bears the longitudinal shear force, so that the combination effect of the sandwich composite wall panel is high;

(7) The sandwich composite wallboard using mixed studs can be constructed into a curved structure without causing construction difficulties;

(8) If the lightweight multi-layer sandwich composite wallboard member of the utility model encounters a relatively large impact load, when one layer of the sandwich composite wallboard fails and is damaged, the other layer can continue to carry the load and form Larger punching cone, so it has higher bearing capacity; at the same time, it is easy to realize factory prefabrication or pouring concrete on site, the manufacturing process is simple, and labor is reduced to improve construction efficiency.

The utility model will become clearer through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the utility model.

Description of drawings

Figure 1 is a schematic diagram of an embodiment of the light-duty multi-layer steel-concrete-steel sandwich composite shear wall column member of the present invention.

Fig. 2 is a partial view of a sandwich composite wall panel member of the present invention.

FIG. 3 is an enlarged view of part A of FIG. 1 .

Fig. 4 is a schematic diagram of another embodiment of the light-duty multi-layer steel-concrete-steel sandwich composite shear wall column member of the present invention.

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements. As mentioned above, as shown in Figures 1 and 2, the light-duty multi-layer steel-concrete-steel sandwich composite shear wall column member 100 provided by the embodiment of the present invention includes: a steel tube concrete member 50a and a sandwich composite wall panel member 50b , both ends of the sandwich composite wall panel member 50b are connected to the steel pipe concrete member 50a;

The steel pipe concrete member 50a includes an outsourcing steel pipe 10 and a steel-concrete 11, and the outsourcing steel pipe 10 is covered outside the steel-concrete 11;

The sandwich composite wall panel member 50b includes: including: at least three steel plates 1, lapable shear nails 2 and lightweight rubber-modified fiber concrete 3, the at least three steel plates 1 are arranged in parallel, and two adjacent The overlapping shear nails 2 are evenly arranged on the opposite sides of the steel plates 1, and a filling space is formed between two adjacent steel plates 1, and the light rubber modified fiber concrete 3 is filled in the filling the space and covering the lapable shear stud 2;

In one embodiment, as shown in FIGS. 1 and 4 , a steel backing plate 20 is also included, and both ends of the sandwich composite wall panel member 50 b are connected to the steel tube concrete member 50 a through the steel backing plate 20 .

In one embodiment, as shown in FIG. 1 , one side of the steel backing plate 20 is welded to the end surface of the sandwich composite wall panel member 50 b, and the other side is welded to the outer surface of the outer cladding steel pipe 10 .

In one embodiment, as shown in Figure 2, it also includes cylindrical shear studs 4, and the overlapping shear studs 2 and cylindrical shear studs 4 are evenly arranged on two adjacent steel plates 1 opposite to each other. on the side. The lappable shear studs 2 and the cylindrical shear studs 4 are respectively arranged in a matrix on the opposite sides of two adjacent steel plates 1 as a whole.

In one embodiment, the lapable shear studs 2 and cylindrical shear studs 4 are evenly welded to the opposite sides of two adjacent steel plates 1 .

In one embodiment, as shown in FIG. 2 , the overlapping shear studs 2 welded on the opposite sides of two adjacent steel plates 1 are overlapped and arranged together; The cylindrical shear studs 4 on opposite sides of the steel plate 1 are arranged in a mirror-image symmetrical structure.

In one embodiment, as shown in Figure 2, the lapable shear stud 2 is a J-shaped shear stud, one end of the vertical part of the J-shaped shear stud is welded to the side of the steel plate 1, and the other Bend one end to form a hook shape.

In one embodiment, as shown in FIG. 2 , one end of the cylindrical shear stud 4 is welded to the side of the steel plate 1 , and the other end is connected to a round platform 41 with an integral structure.

It should be noted that, the effect of the J-shaped shear stud and the cylindrical shear stud, the J-shaped shear stud mainly relies on the interlocking effect to connect two adjacent steel plates to bear the transverse shear force, and the cylindrical shear stud The nails mainly bear the longitudinal shear force, so that the combination effect of the sandwich composite wallboard is high.

As shown in FIG. 3 , FIG. 3 is an enlarged view of part A of FIG. 1 . The sandwich composite wall panel member 50b is connected to the steel pipe concrete member 50a through the steel backing plate 20, and an angle iron connector 40 is also provided at the edge part where the steel plate 1 is connected to the steel backing plate 20, the The edge part of the steel backing plate 20 connected with the outer-wrapped steel pipe 10 is also provided with an angle iron connector 40, through which the angle iron connector 40 is reinforced and welded, which can improve the firmness of the entire structure and make the integrity stronger.

In the embodiment shown in FIG. 4 , this embodiment includes: an upper beam 30 a , a lower beam 30 b , a left column 30 c , a right column 30 d , a sandwich composite wall panel member 50 b and a steel backing plate 20 . In this embodiment, the upper end surface and the lower end surface of the sandwich composite wall panel member 50b are respectively connected to the upper beam 30a and the lower beam 30b through a steel backing plate 20, and the sandwich composite wall panel member 50b The upper end surface is welded to one side of the steel backing plate 20, the other side of the steel backing plate 20 is welded to the upper beam 30a, and the lower end surface of the sandwich composite wall panel member 50b is welded to the second steel backing plate. One side of the plate 20 is welded, and the other side of the second steel backing plate 20 is welded to the lower beam 30b, wherein the upper beam 30a and the lower beam 30b are beams wrapped with steel pipes.

The light-weight multi-layer steel-concrete-steel sandwich composite shear wall column member 100 of the present invention uses lightweight rubber-modified fiber concrete, and its components are cement, water, water reducing agent, fly ash hollow microspheres, silicon Ash and PVA modified fiber, rubber powder wherein according to mass percentage, cement: silica fume: floating beads: water = 1:0.1:0.5:0.4; the total volume after uniform mixing of cement, floating beads, fly ash and water As the base, the dosage of PVA modified fiber is 0.5% of the total volume, the shrinkage reducing agent is 1% of the total volume, and the superplasticizer is 1% of the total volume.

The manufacturing method of the sandwich composite wall panel member 50b includes the following sequence:

1. Mixed studs (J-shaped shear studs, cylindrical shear studs) are welded on the two opposite sides of adjacent steel plates, and the two adjacent steel plates are assembled, and the J-shaped shear studs are overlapped together. The cylindrical shear studs are arranged in a mirror-image symmetrical structure, and at least three steel plates are connected by interlocking effect to form a steel structure as a whole;

2. A filling space is formed between two adjacent steel plates, and light rubber-modified fiber concrete is poured in the filling space;

3. Shaped by natural maintenance.

As mentioned above, after the sandwich composite wall panel member 50b is manufactured, it is then connected to the steel pipe concrete member 50a through the steel backing plate 20 .

The sandwich composite wallboard member 50b is a multi-layer steel-concrete-steel sandwich composite wallboard member using lightweight rubber-modified fiber concrete as the core layer. After molding, it has good crack resistance and impact resistance. The core concrete, that is, the lightweight rubber-modified fiber concrete is restrained by the steel plate and is in a state of multidirectional compression to avoid excessive deformation of the core concrete. The overall weight is light, and the manufacturing process is simple, which can realize factory prefabrication and on-site assembly to improve construction productivity.

The sandwich composite wall panel member 50b inherits the advantages of the traditional steel-concrete-steel composite wall panel, rationally utilizes the superior compression resistance, crack resistance, and energy dissipation performance of lightweight concrete and the superior tensile performance of steel plates, and avoids the combination The slab structure was withdrawn from work due to local punching damage, and lightweight modified fiber concrete was used as the core material. The use of new core materials and the concept of multi-layer sandwich can actively stimulate a large damage surface to cause the overall deformation of the component, and play the role of the overall structure. The tensile film effect carries out bearing and energy consumption, which changes its failure mechanism (from local punching damage to overall bending deformation), greatly improving its impact and explosion resistance performance; it is conducive to the promotion of lightweight concrete and steel-concrete-steel The sandwich composite structure is used as a protection system under extreme loads.

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (8)

1. a kind of light-duty multilayer steel-concrete-steel clamp core combined shear wall column component, which is characterized in that including：Concrete filled steel tube The both ends of the surface of component and sandwich assembled wall board component, the sandwich assembled wall board component connect with the concrete filled steel tubular member It connects；

The concrete filled steel tubular member includes outside steel pipe, steel-concrete, and the outside steel pipe is coated on the steel-concrete Except；

The sandwich assembled wall board component includes：At least three blocks of steel plates can overlap WELDING STUDS and lightweight modified rubber fiber coagulation Soil, at least three blocks of steel plates are arranged in parallel, the opposite side of adjacent two blocks of steel plates respectively equably lay described in can overlap WELDING STUDS, and filling space is formed between adjacent two blocks of steel plates, the lightweight modified rubber fiber concrete is filled in institute It states in filling space and coats the WELDING STUDS that overlaps.

2. light-duty multilayer steel-concrete-steel clamp core combined shear wall column component as described in claim 1, which is characterized in that also Including billet, the both ends of the surface of the sandwich assembled wall board component are connected by the billet and the concrete filled steel tubular member It connects.

3. light-duty multilayer steel-concrete-steel clamp core combined shear wall column component as claimed in claim 2, which is characterized in that institute It states billet one side and the end face of the sandwich assembled wall board component is welded, the outer surface of another side and the outside steel pipe is welded It connects.

4. light-duty multilayer steel-concrete-steel clamp core combined shear wall column component as described in claim 1, which is characterized in that also It is described to overlap WELDING STUDS and cylindricality WELDING STUDS is laid in adjacent two pieces of steel plate phases evenly and at intervals including cylindricality WELDING STUDS To side on.

5. light-duty multilayer steel-concrete-steel clamp core combined shear wall column component as claimed in claim 4, which is characterized in that institute WELDING STUDS can be overlapped and cylindricality WELDING STUDS is welded in evenly and at intervals on the opposite side of adjacent two blocks of steel plates by stating.

6. light-duty multilayer steel-concrete-steel clamp core combined shear wall column component as claimed in claim 5, which is characterized in that weldering The WELDING STUDS that overlaps for being connected on adjacent two pieces of steel plate opposite flanks mutually overlaps laying；And it is welded on phase The cylindricality WELDING STUDS on adjacent two pieces of steel plate opposite flanks is laid in mirror image.

7. special such as the light-duty multilayer steel-concrete of claim 1~6 any one of them-steel clamp core combined shear wall column component Sign is that the WELDING STUDS that overlaps is J-type WELDING STUDS, and one end of the J-type WELDING STUDS vertical portion is welded in the steel plate Side on, the other end is bent to form hook shape.

8. special such as the light-duty multilayer steel-concrete of claim 4~6 any one of them-steel clamp core combined shear wall column component Sign is that cylindricality WELDING STUDS one end is welded on the side of the steel plate, and the other end is connected with the round platform of integral structure.