CN110777967A - Light steel light concrete structure - Google Patents

Abstract

The invention discloses a light-steel light-concrete structure, comprising a frame-shaped light-steel skeleton and light-weight concrete. The light-steel skeleton comprises a horizontally arranged sky keel, at least one middle keel and a ground keel, and at least two vertical vertical keels. The two ends of the sky keel, the middle keel and the ground keel are fixedly connected with the vertical keels on both sides respectively to form a frame-shaped light steel skeleton. The sky keel, the middle keel, the ground keel and the vertical keel are spaced along the length extension direction with a plurality of elliptical flanging structures. Reinforced holes. By setting the elliptical flanging structure reinforcing hole in the present invention, the resistance of the wall, floor or roof formed by the sound or heat penetrating through it can be increased, so as to improve the sound insulation and heat insulation effect, and it is also convenient for light weight. The flow of concrete and the increase of the contact area with the skeleton not only improves the pouring efficiency, but also improves the strength of the building and saves metal materials, and can also reduce the weight of the building and facilitate pre-embedded wiring, which makes the building's load-bearing capacity and resistance. High impact and deformation resistance.

Description

A light-steel light-mixed structure

technical field

The invention relates to the technical field of building materials, in particular to a kind of building body with good sound insulation and heat insulation effect, high pouring efficiency, light weight and high strength of walls, roofs, floors and other buildings constructed, saving metal materials, and being convenient for pre-embedded wiring. , Light steel light-concrete structure with high load-bearing capacity, impact resistance and deformation resistance.

Background technique

The light-steel light-concrete structure is a new type of structural system that combines thin-walled light-weight steel and light-weight concrete as the main materials, relying on the fast-build light-steel keel, and combining light-weight steel prefabricated assembly and light-weight concrete cast-in-place. Because light steel keel has good stiffness and bearing performance, it can bear the construction load, which creates conditions for simplifying the installation process and structure of the formwork; and light concrete, mainly including but not limited to modified polystyrene particles, perlite particles, ceramics The solid walls, roofs and floors obtained have good sound insulation and fire resistance, and overcome the defects of poor living comfort such as hollow walls; Light steel keel and lightweight concrete have good synergy performance, which can give full play to the advantages of the two materials, saving steel compared with light steel structure and reinforced concrete structure; in addition, lightweight concrete material has good thermal performance, and the constructed building The thermal insulation performance of the building body is better than that of the concrete structure and the masonry structure, and the integration of the thermal insulation of the building body structure can be realized in a specific climate zone. Therefore, light-steel light-concrete structures have been gradually applied on a large scale. However, since the light-steel light-concrete structure is made of metal material mainly composed of light-steel keel, and the metal has the characteristics of poor sound insulation effect and low thermal insulation performance, the light-steel keel is used as the stress of the light-steel light-concrete structure. When using components, the constructed building body will inevitably have the problems of poor sound insulation effect and low thermal insulation performance. In the prior art, for places with high requirements for sound insulation and heat insulation, the light steel light-mixed structure usually adopts methods such as thickening walls, increasing the number of partitions or setting up double-layer walls to solve the problems of poor sound insulation effect and low heat insulation performance. However, it also leads to problems such as complex construction, increased engineering volume, increased cost, and reduced space area utilization. At present, there is also a method of opening holes on the thin-walled light steel web of the light steel keel to increase the transmission path of sound or heat, so as to increase the transmission resistance and improve the sound insulation and heat insulation of buildings such as walls. However, because the holes opened are light holes, the parameters of the openings are unreasonable, and the opening rate of the web is too large or too small, the bearing capacity and stiffness of the walls and other buildings after the opening of the thin-walled light steel is also significantly reduced. There is a need to increase the thickness of the web and increase the size to make up for the problem.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a kind of sound insulation and heat insulation effect, high pouring efficiency, light weight and high strength of the wall, roof, floor and other buildings constructed, save metal materials, facilitate pre-embedded wiring, bearing capacity and Light steel light-concrete structure with high impact resistance and deformation resistance.

The present invention is realized as follows: comprising a frame-shaped light steel skeleton and light concrete filled inside and outside of the light steel skeleton, characterized in that the light steel skeleton comprises a horizontal keel, at least one horizontal middle The keel, the horizontal ground keel, and at least two vertical keels arranged at intervals in the longitudinal direction, the two ends of the sky keel, the middle keel and the ground keel are respectively fixedly connected with the vertical keels on both sides to form a frame-shaped light steel skeleton. The sky keel, the middle keel, the ground keel and the vertical keel are spaced apart along the length extension direction with a plurality of elliptical flanging structure reinforcing holes.

The present invention has the following beneficial effects:

1. The present invention bends the edge of the structure reinforcement hole in the prior art inward to form the flange structure reinforcement hole, which can not only inject the lightweight concrete slurry into the light steel frame to form a guide and increase the injection channel, effectively improve the pouring efficiency , and the inwardly protruding flanging can increase the contact area between the light steel skeleton and the lightweight concrete slurry, which can make the connection between the light steel skeleton and the solidified lightweight concrete more stable, and the inwardly protruding flanging It can also play the role of reinforcing ribs to enhance the strength of the light steel skeleton web, so that in the case of a certain web, it can help improve the strength of the building.

2. The reinforced hole of the flanging structure of the present invention adopts an elliptical structure. Under the condition of a certain area of the web cutting hole, compared with the circular hole, triangular hole and other hole types, the lateral size of the web cutting hole can be reduced, so as to effectively Improve the flexural rigidity of the web in the axial direction; compared with long holes such as square holes and waist holes, it can effectively improve the flexural rigidity of the web in the longitudinal direction. Therefore, the elliptical flanging structure reinforcement hole adopted in the present invention can realize the balance of the longitudinal and transverse stiffness of the building body under the condition that the area of the web plate cutting hole is constant, and significantly improve the seismic performance of the building body.

3. Due to the inwardly protruding flanging of the reinforced hole of the flanging structure of the present invention, the propagation path of sound and heat can be significantly increased compared with the web light hole in the corresponding technology, so that the resistance of sound and heat penetrating the wall becomes larger, Therefore, the sound insulation and heat insulation effects of the partition wall are improved, thereby solving the problem of "thermal bridge effect" caused by the light steel skeleton in the light steel light-concrete structure in the prior art.

4. In the present invention, a frame-shaped light steel skeleton is formed by the sky keel, the middle keel, the ground keel, the vertical keel and the diagonal brace. After the light concrete slurry filled in the frame-shaped light steel skeleton is solidified, it can be combined with the external slurry The skeleton is tightly clamped in it to form a stable whole. When the constructed building is subject to impact or earthquake, the skeleton itself is not easily dented and deformed due to external force, thereby improving the building's load-bearing capacity, impact resistance and deformation resistance. ability.

5. The present invention lays a dismantling-free structural reinforcement mesh including but not limited to metal wire mesh, PVC material board mesh, etc. in the lightweight concrete on one or both sides of the frame-shaped light steel skeleton. When the building body such as the surface is hit, the dismantling-free structural reinforcement net can quickly transfer the stress to the whole building body, which can effectively solve the problem of excessive local stress of the building body, thereby improving the impact resistance and deformation resistance of the building body. Cracking occurs.

6. The present invention forms a lap joint structure on both sides of the light-steel light-concrete structure, which is not only convenient for on-site assembly and use of the light-steel light-concrete structure, but also improves the construction of walls, roofs, floors and other buildings after assembly. The connection strength of the building body is also dislocated through the lap connection, so that the sound and heat transmission paths of the building body joint are increased, which is more conducive to improving the sound insulation and heat insulation effect of the building body.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the three-dimensional structure schematic diagram of the light steel frame and the dismantling-free structural reinforcement net of Fig. 1;

3 is a three-dimensional structural view of the reinforcing hole of the flanging structure of the "C" shaped steel of the present invention;

Fig. 4 is one of the sectional views of Fig. 3;

Fig. 5 is the second sectional view of Fig. 3;

6 is a schematic diagram of an "L"-shaped lap joint structure of the present invention;

Fig. 7 is the schematic diagram of the "V"-shaped overlapping structure of the present invention;

Fig. 8 is the schematic diagram of the "U"-shaped overlapping structure of the present invention;

Figure 9 is a schematic diagram of the decomposition of the construction structure of the present invention (lightweight concrete is not shown);

Fig. 10 is a partial enlarged view of Fig. 9;

In the picture: 1-light steel frame, 10-day keel, 11-intermediate keel, 12-ground keel, 13-vertical keel, 14-flanging structural reinforcement hole, 15-diagonal brace, 16-inclined cone, 17- Arc edge frustum, 18-smooth cut-resistant part, 2-lightweight concrete, 3-reinforcing mesh without dismantling, 4-plastering mortar layer, 5-fixing screw, 6-concrete structure, 7-cement nail.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

As shown in FIGS. 1 to 8 , the present invention includes a frame-shaped light steel frame 1, and a light weight concrete 2 filled inside and outside the light steel frame 1. The light steel frame 1 includes a horizontal keel 10, a horizontal At least one middle keel 11, horizontal ground keel 12, at least two vertical keels 13 arranged at least longitudinally, the two ends of the sky keel 10, the middle keel 11 and the ground keel 12 are respectively connected with the vertical keels 13 on both sides. A frame-shaped light steel skeleton 1 is formed by fixed connection. The sky keel 10 , the middle keel 11 , the ground keel 12 and the vertical keel 13 are spaced apart along the lengthwise extending direction with a plurality of oval flanging structure reinforcing holes 14 .

The present invention also includes diagonal braces 15 arranged at the four corners of the frame-shaped light steel frame 1, one end of which is fixedly connected to the vertical keel 13 and the other end is fixedly connected to the sky keel 10 or the ground keel 12, and the diagonal braces 15 are spaced along the extending direction of the length. There are a plurality of elliptical flanging structures reinforcing the diagonal braces 15 of the holes 14 ; the diagonal braces 15 form a stable triangular structure between the vertical keel 13 and the sky keel 10 or the ground keel 12 to improve the deformation resistance of the light steel frame 1 .

The edge of the flanging structure reinforcing hole 14 is folded inward to the center side of the light steel frame 1 and the cross-section is formed into a structure of an oblique frustum 16 or an arc-edge frustum 17, and the slope of the cross-section of the oblique frustum 16 is 65-75° .

The diameter of the reinforcing hole 14 of the flanging structure is 76×52.

The height of the inclined cone truncated 16 or the arc edge truncated cone 14 of the flanging structure reinforcing hole 14 is 5-7 mm.

The edge top of the inclined cone 16 or the arc-edge cone of the flanging structure reinforcing hole 14 is everted to form a smooth cut-proof portion 18 .

The area of the respective flanging and flanging structure reinforcing holes 14 of the sky keel 10 , the middle keel 11 , the ground keel 12 , the vertical keel 13 and the diagonal brace 15 is 30-50% of the corresponding web area.

The webs of the sky keel 10, the middle keel 11, the ground keel 12, the vertical keel 13 and the diagonal brace 15 are all "C" shaped steel, and the notches of the shaped steel are all facing the center side of the light steel frame 1, so that the After the light-weight concrete slurry 2 filled in the "C"-shaped steel slot is solidified, the framework 1 can be tightly sandwiched in it together with the external slurry. When the constructed building is subjected to impact or earthquake, the light-weight concrete The frame 1 itself is not easily dented and deformed by external force.

One or both sides of the frame-shaped light steel frame 1 is fixedly provided with a dismantling-free structural reinforcing mesh 3 , and the lightweight concrete 2 is filled inside and outside of the light steel frame 1 and the dismantling-free structural reinforcing mesh 3 .

The dismantling-free structural reinforcement mesh 3 includes but is not limited to metal wire mesh and PVC material plate mesh.

As shown in FIGS. 6 to 8 , the cross-sections of the two sides of the light-steel light-concrete structure form a lap joint structure in which the two sides cooperate with each other.

The cross-sections of the two sides of the light-steel light-mixed structure are formed into "L"-shaped, "V" or "U"-shaped lap joints whose two sides cooperate with each other.

The frame-shaped light steel skeleton 1 is provided with a pre-buried pipeline passing through the reinforcing hole 14 of the flanging structure, and the surface of the light steel light-mixed structure is embedded with a switch and socket box opening outward.

As shown in FIG. 9 , the lightweight concrete 2 includes, but is not limited to, modified polystyrene particle concrete, perlite particle concrete, and ceramsite concrete, and the front and/or reverse sides of the lightweight steel lightweight concrete structure are fixed on the outside. There is plastering mortar layer 4.

The generation of the present invention and the on-site construction process are as follows:

As shown in Figures 1 to 8, during prefabrication in the factory, C-shaped steels of corresponding specifications are cut according to the design, and oval flanged structural reinforcement holes 14 are punched out on the webs of the C-shaped steels, and then the keel is cut. 10. Both ends of the middle keel 11 and the ground keel 12 are welded or riveted with the vertical keels 13 on both sides to form a preliminary frame-shaped light steel frame 1, and then diagonal braces are used at the four corners of the preliminary frame-shaped light steel frame 1 respectively. 15 is fixedly connected with the vertical keel 13 and the sky keel 10 or the ground keel 12 to form a stable triangular reinforced structure to obtain the light steel frame 1 . Fix the two ends of the light steel frame 1, and use fixing screws on the upper and lower sides to fix the reinforcement mesh 3 including but not limited to non-removable metal wire mesh, PVC material board net, etc. The reinforcing mesh 3 is put into the pouring mold or the pouring formwork is erected on the outside, the pipelines and wire boxes passing through the reinforcing holes 14 of the flanging structure are arranged on the light steel frame 1 according to the design, and finally the light weight concrete slurry 2 is poured onto the light steel frame 1 and 1. On the reinforcement net 3 of the non-removal structure, the lightweight concrete slurry 2 is completely filled through the reinforcement hole 14 of the flanging structure and the mesh hole of the reinforcement mesh 3 of the non-removal structure, until the light steel frame 1 and the reinforcement mesh 3 of the non-removal structure are covered. Inside it, a layer of plastering mortar layer 4 is poured or scraped on the surface.

As shown in Figures 9 and 10, during construction, place the first light-steel light-concrete structure of the present invention in place, and then use cement nails to fix its upper and lower end faces with the concrete slab or light-weight grouting cover, and then connect the relative The edge lap joint of the adjacent light-steel light-concrete structure overlaps with the lap joint of the first light-steel light-concrete structure, and finally the adjacent walls are connected and fixed with connecting pieces, and the walls of the building are completed in sequence according to this construction. , roofing, floor construction.

The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. , all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A light-steel light-concrete structure, comprising a frame-shaped light-steel skeleton (1), and light-weight concrete (2) filled inside and outside the light-steel skeleton (1), characterized in that the light-steel skeleton (1) ) comprising a horizontally placed sky keel (10), at least one horizontally placed middle keel (11), a horizontally placed ground keel (12), and at least two vertical keels (13) arranged at intervals in the longitudinal direction, the sky keel ( 10) The ends of the middle keel (11) and the ground keel (12) are respectively fixedly connected with the vertical keels (13) on both sides to form a frame-shaped light steel frame (1). (11), the ground keel (12) and the vertical keel (13) are provided with a plurality of elliptical flanging structure reinforcing holes (14) spaced apart along the longitudinal extension direction. 2. The light-steel light-mixed structure according to claim 1, characterized in that the frame (1) further comprises four corners of the frame-shaped light-steel frame (1), one end is fixedly connected with the vertical keel (13) and the other end A diagonal brace (15) is fixedly connected with the sky keel (10) or the ground keel (12), and the diagonal brace (15) is spaced along the length extending direction with a plurality of oval flanging structure reinforcing holes (14) diagonal braces (15). 3. The light-weight steel light-mixed structure according to claim 2, characterized in that the edge of the flanging structure reinforcing hole (14) is folded inward toward the center side of the light-weight steel frame (1), and the cross-section is an inclined frustum (16) Or the arc-edge frustum (17) structure, the slope of the cross-section of the inclined frustum (16) is 65-75°. 4. The light-weight steel light-mixed structure according to claim 3, characterized in that the edge top of the inclined frustum (16) or the arc frustum (17) of the reinforcing hole (14) of the flanging structure is everted to form a smooth anti-corrosion barrier. Cut (1401). 5. The light steel light-mixed structure according to claim 1, 2, 3 or 4, characterized in that the sky keel (10), the middle keel (11), the ground keel (12), the vertical keel (13) and the inclined The area of the respective flanged structure reinforcing holes (14) of the brace (15) is 30-50% of the corresponding web area. 6. The light-steel light-mixed structure according to claim 5, characterized in that one or both sides of the frame-shaped light-weight steel skeleton (1) is fixedly provided with a dismantling-free structural reinforcement net (3), and the light Concrete (2) is filled inside and outside of the light steel frame (1) and the dismantling-free structural reinforcement net (3). 7 . The light-steel light-mixed structure according to claim 5 , wherein the cross-sections of both sides of the light-steel light-mixed structure are formed into a lap joint structure in which both sides cooperate with each other. 8 . 8. The light-weight steel light-mixed structure according to claim 7, characterized in that the cross-sections of the two sides of the light-steel light-mixed structure are in the shape of "L", "V" or "U" that cooperate with each other on both sides. connection. 9. The light-steel light-concrete structure according to claim 5, characterized in that the frame-shaped light-steel skeleton (1) is provided with a pre-buried pipeline passing through the reinforcing hole (14) of the flanging structure, and the light-steel The surface of the light-mixed structure is embedded with switches and socket boxes that open to the outside. 10. The light-weight steel light-concrete structure according to claim 5, characterized in that the light-weight concrete (2) comprises modified polystyrene particle concrete, perlite particle concrete, and ceramsite concrete, and the light-weight steel light-weight concrete (2) comprises A plastering mortar layer (4) is fixed on the outside of the front and/or back of the mixed structure.

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