CN103993672A - Tenon type connecting joint structure of low-rise fabricated composite wall house - Google Patents

Abstract

The invention discloses a tenon-type connection node structure of a low-rise assembled composite wall house, which includes surrounding walls and horizontal floor slabs. The adjacent walls are vertically provided with prefabricated components for connection, and the prefabricated The side of the component is provided with a groove, and the wall is provided with a protrusion matching the groove of the prefabricated component. The top of the prefabricated component is vertically provided with a grouting hole that runs through the prefabricated component and the wall at the same time. With steel bars. Compared with the existing wall housing structure, the present invention has good force bearing and seismic performance, and the factory production of components conforms to the development direction of national construction industrialization and housing industrialization, reduces environmental pollution on the construction site and surrounding areas, and reduces resource consumption. Waste, simplify the construction process, improve construction quality.

Description

Low-rise prefabricated composite wall house tenon joint structure

technical field

The invention relates to a wall house structure, in particular to a low-rise assembled compound wall house tenon-type connection node structure. the

Background technique

In recent years, the western region of my country has been hit by strong earthquakes repeatedly, causing heavy losses, and the biggest victims are rural dwellings. At the same time, most of the rural houses are built with traditional materials such as masonry, and almost no energy-saving measures are considered, which is not conducive to the sustainable development of society. Therefore, the national construction department attaches great importance to the improvement of village and town buildings, and scientifically guides rural houses to take the road of green building development. 2013] No. 1), which clearly pointed out that we should vigorously promote the industrialization of construction, popularize prefabricated concrete and other construction systems suitable for industrial production, accelerate the development of prefabrication and assembly technology for construction projects, and improve the integration level of construction industrialization technology. Many foreign countries, such as North America and Japan, are committed to the development of the single-family housing industry. They are mainly industrialized. In addition to wood structures, concrete structures are mostly prefabricated systems, which are assembled on site in factories, which are energy-saving, earthquake-resistant, and low in cost. At the same time, there are a variety of development and construction models for the market, such as centralized community-style block-by-block construction, and user-customized models based on their own needs, which are built by builders or manufacturers on their own sites. This model is more suitable for rural residents in our country to build houses on their own homesteads, so it is expected to be grafted into the country and develop the rural housing industry. the

In the above background, the School of Architecture and Environment of Sichuan University proposed a new type of prefabricated composite wall structure, which is a reinforced concrete sandwich panel (patent number ZL201320428717.7). This structure is very suitable for the development of the rural housing industry and is expected to be used in Promote and apply in rural areas. The new type of prefabricated composite wall can be used in low-rise residential buildings. It adopts the industrialized construction method of factory production and on-site assembly. Therefore, the connection measures between walls and between walls and floors are key technical issues, which are important for improving the overall structural mechanics of low-rise buildings. Performance, especially shock resistance, is critical. At present, the connection technology of prefabricated concrete shear walls in China is very lacking, and it is not suitable for the connection of new prefabricated composite walls. At present, there is no research and application of joint measures specifically for this structural system. the

At present, the vertical connection between the walls of the same layer of ordinary prefabricated shear wall structure system basically adopts the connection method of cast-in-place concrete structural columns, that is, the horizontally distributed steel bars in the prefabricated walls extend into the positions of cast-in-place structural columns for anchorage. And cast-in-place concrete at the construction site to form structural columns. And the connection between the prefabricated floor and the wall is carried out by setting ring beams and prefabricated laminated floors. Parts are poured into the whole at the construction site. the

Among the domestic prefabricated structural systems that adopt the connection measures of ring beam-structural column-laminated slab, the "full prefabricated integrated shear wall structure system (NPC)" introduced by Nantong Construction Engineering General Contracting Co., Ltd. is relatively successful. In the NPC technology system, the shear walls and columns of the vertical components are prefabricated, the beams and slabs of the horizontal components are superimposed; pour connection. the

The plug-in prefabricated hole grouting steel bar connection technology proposed by Jiang Hongbin of Harbin Institute of Technology is a typical example of the application of steel grout anchor lap joints in prefabricated structures. The specific implementation method of the lap connection of the restrained grout anchor reinforcement is: at the lower end of the pre-embedded reinforcement of the precast concrete member, a hole with a corrugated or spiral inner wall is reserved, and when the precast concrete member is installed, the reinforcement is overlapped Insert into the hole to set the lap length, pour grouting material into the hole through the grouting hole and vent hole connected with the hole, after the grouting material solidifies and hardens, the two steel bars can be connected into one. the

If the above-mentioned traditional connection structure is used in low-rise buildings, there are many problems. The main disadvantages are: the workload of secondary pouring on site is large, the construction is complicated, and it is not suitable for the construction conditions of low-rise houses, especially single-family houses; The quantity is large, and special devices such as sleeves are expensive. And it cannot be directly connected with the composite sandwich wall. Therefore, researching new connection schemes is a key step in advancing the application of prefabricated houses. the

Contents of the invention

The object of the present invention is to provide a tenon-type connection joint structure of a low-rise prefabricated composite wall building which solves the above-mentioned problems. the

In order to achieve the above object, the technical solution adopted by the present invention is: a low-rise assembled compound wall house tenon-type joint structure, including surrounding walls and horizontal floor slabs. Prefabricated components for connection, grooves are provided on the side of the prefabricated components, protrusions are provided on the wall to match the grooves of the prefabricated components, and a groove is vertically opened on the top of the prefabricated components and simultaneously runs through the prefabricated components and the wall. grouting holes, steel bars are arranged in the grouting holes;

As preferably, the grouting hole is two or more;

As preferably, the height of the steel bar is greater than the depth of the grouting hole;

As preferably, the prefabricated component is higher than the wall, and its height difference is the thickness of the floor slab;

As a preference, flanges are provided around the floor, and the flanges are built on top of the wall;

Preferably, the prefabricated component is columnar, and the cross section is L-shaped, and the grooves are located at the two ends of the side of the prefabricated component;

Preferably, the prefabricated component is columnar and has a T-shaped cross section, and the grooves are located at three ends of the side of the prefabricated component;

Preferably, the prefabricated component is columnar and has a cross section, and the grooves are located at four ends of the side of the prefabricated component. the

Compared with prior art, the advantage of the present invention is:

1. Factory production of components. It conforms to the development direction of national construction industrialization and housing industrialization, meets the national requirements of "low-carbon economy" and "four festivals and one environmental protection", and plays a demonstration role in promoting the development of green buildings and green construction in my country. the

2. Reduce the environmental pollution of the construction site and its surroundings. Environmental pollution problems such as noise, flying dust, light source, water pollution, and nuisance problems at the construction site. After adopting the new scheme, because the use of on-site concrete can be basically eliminated, environmental pollution can be reduced to a greater extent. the

3. Reduce the waste of resources. In the construction process of the new scheme, there is no use of formwork and scaffolding, which saves resources. the

4. Simplify the construction process and improve the construction quality. At present, there are many problems in the construction quality of residential projects, mainly because the number of skilled workers is constantly decreasing, the number of operators used in conventional construction is huge, the technical quality and proficiency of workers are uneven, the maintenance cannot be in place in time, and the project quality cannot be obtained. Effective control and improvement. After adopting the new scheme, the use of "fewer but better" workers can avoid the above-mentioned problems and ensure the quality of prefabricated components and projects. the

Description of drawings

Figure 1 is a schematic diagram of the tenon-type connection structure of the house structure nodes;

Fig. 2 is the structural representation of L-shaped prefabricated component;

Fig. 3 is the structural representation of T-type prefabricated component;

Fig. 4 is a structural schematic diagram of a cross-shaped prefabricated component. the

In the figure: 1. Wall; 2. Floor; 3. Prefabricated components; 4. Rebar; 5. Grouting holes. the

Detailed ways

Embodiment: The present invention will be further described below. As shown in Figure 1, a low-rise prefabricated composite wall house tenon joint joint structure includes surrounding walls 1 and horizontal floors 2, and the adjacent walls 1 are vertically provided with connecting joints. Prefabricated component 3, the side of the prefabricated component 3 is provided with a groove, the wall 1 is provided with a protrusion matching the groove of the prefabricated component 3, and the top of the prefabricated component 3 is vertically opened with a groove that runs through the prefabricated component 3 The grouting hole 5 of the wall body 1 is provided with a steel bar 4 inside the grouting hole 5 . the

The present invention divides the prefabricated farmhouse structure into three major blocks under the framework of the composite wall 1 anti-seismic and energy-saving farmhouse structure system: prefabricated components 3 , prefabricated walls 1 , and prefabricated floor slabs 2 . The prefabricated component 3 is connected with the wall 1 by mortise and vertical grouting, the floor 2 is placed on the wall 1, and the joints are filled with high-strength mortar, so that the three are integrated to form a strong integrity. Farm houses. the

This embodiment takes a specific construction plan as an example. The prefabricated component 3 used for node connection refers to a prefabricated special-shaped structural column. The size of the structural column is 200mm×200mm. There is a 200mm×500mm prefabricated component for vertical grouting, and the vertical grouting hole 5 of the component has a diameter of 100mm. The combination of prefabricated columns and such vertical components constitutes a mortise and tenon form, and the prefabricated wall 1 is inserted into the recess of the prefabricated component 3 . There are no less than 4 reinforcing ribs vertically inside the structural column, the diameter of which is not less than 16mm, and closed circular stirrups are adopted. The diameter of the stirrups is not less than 8mm, and the spacing is not greater than 250mm. The prefabricated component 3 is columnar and has an L-shaped cross section, and the grooves are located at both ends of the sides of the prefabricated component 3, as shown in Figure 2; or the prefabricated component 3 is columnar and has a T-shaped cross section, The grooves are located at the three ends of the side of the prefabricated component 3, as shown in Figure 3; Figure 4. the

The structure of the prefabricated wall 1 adopts the existing patented technology of a reinforced concrete sandwich panel with 4 grids, which means that the central part of the wall 1 cuts the polystyrene board according to the size of the wall 1 and places it on both sides of the polystyrene board. 4 nets of steel bars, and connected by obliquely inserted bars to form an integral sandwich layer of 4 grids of steel bars. The concrete on both sides of the core slab is poured horizontally using a vibrating table, and the components are maintained. When the wall 1 is prefabricated, prefabrication is required. Leave anchors. The thickness of the sandwich layer of composite wall 1 is 60 mm, and the thickness of the concrete on both sides is 70 mm. The edge of wall 1 is prefabricated by concrete, and 500mm×1000mm protrusions are made on both sides of wall 1 for mortise joint with prefabricated component 3. For the protrusions on both sides of wall 1, three vertical groutings with a diameter of 100mm are made on each side The holes 5 are aligned up and down with the vertical grouting holes 5 of the prefabricated component 3, and are used for vertical grouting. the

The method of the prefabricated floor 2 is similar to that of the wall 1, the central part is also in the form of a composite panel, the thickness of the sandwich layer is 40mm, and the thickness of the concrete on both sides is 50mm. The edge part is also prefabricated concrete, and the floor slab 2 protrudes 100mm around to ride on the wall 1 . the

The prefabricated component 3 is tenon-type connected with the wall 1 and grouted vertically, that is, the protruding part of the wall 1 is inserted into the groove of the prefabricated component 3 to form a tenon joint; after the insertion is completed, the wall 1 and the grouting hole 5 of the prefabricated component 3 are aligned up and down and penetrated, and a steel bar 4 with a diameter of 20-25 mm is placed in the grouting hole 5 . After placement, the steel bar 4 should be 100mm higher than the top surface, and finally pour high-strength mortar into the grouting hole 5, and when the mortar reaches the predetermined strength, the composite wall 1 and the prefabricated component 3 will be guaranteed through the joint action of the mortar and the steel bar 4 between each other. the integrity between. the

The floor 2 resting on the composite wall 1 means that between the top of the lower composite wall 1 and the prefabricated component 3, a 140 mm thick depression is reserved for placing the floor 2, and after placement, use high-strength mortar Smooth the gaps to form a whole. the

On-site construction steps are as follows:

1. Lay out the wires according to the drawings, especially the precise position of each prefabricated component 3. the

2. Install prefabricated components 3 according to the setting-out position. the

3. Pre-installed wall 1. The wall body 1 is hoisted by a crane so that the wall body 1 is substantially perpendicular to the ground, and the wall body 1 is pushed into the position of the wall body 1 reserved by the prefabricated component 3 by means of horizontal push. the

4. Wall 1 positioning. After the wall 1 is pre-installed, the wall 1 is adjusted to the precise position by a crane to meet the penetration of the upper and lower reserved holes. the

5. Insert reinforcement bar 4. Insert a steel bar 4 with a diameter of 25mm in each hole that runs up and down. the

6. Inject high-strength non-shrinkage mortar. Pour mortar into each hole inserted with steel bar 4, and make the mortar dense. The pouring height is 100 mm lower than the height of the prefabricated component 3 and is poured by the upper layer of mortar. the

7. Hoisting floor 2. The floor slab 2 is hoisted with a crane, and the floor slab 2 is placed on the wall body 1 . the

8. Install the prefabricated elements 3 on the upper floor. the

9. Insert a steel bar 4 with a diameter of 25 mm in each hole of the prefabricated component 3 on the upper layer. This steel bar 4 penetrates 310cm into the prefabricated component of the next floor. the

10. Pour mortar into each hole where the steel bar 4 is inserted, and make the mortar dense. the

11. Hoisting the floor slab. the

12. Use high-strength non-shrinkage waterproof mortar to seal the gaps between floor 2 and roof panel pre-wall 1. the

The present invention is mainly used for the connection of the low-rise prefabricated composite wall 1 housing system. Different house types can be designed according to the requirements, and the concrete composite wall 1 is produced by the prefabricated manufacturer. After being transported to the site, the connection is implemented according to the method of the present invention to form a whole house. To achieve the effects of earthquake resistance, energy saving, fire prevention and economy. By applying the present invention, a new development mode of village and town housing can be formed: the user selects the house type according to the needs, and the prefabricated manufacturer produces the wall body 1 according to the drawing, and transports it to the house site for assembly, which can improve the quality of the village and town housing and solve the hidden danger of earthquake resistance, and also It can reduce the intermediate links, and the user directly faces the manufacturer to reduce the cost. the

The tenon-type joint structure of the low-rise assembled composite wall house provided by the present invention has been introduced in detail above. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help Understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application range, and it will be possible to change and improve the present invention without going beyond the concept and scope specified in the appended claims. In summary, the content of this specification should not be construed as limiting the present invention. the

Claims (8)

1. a low layer assembling combined wall house tenon formula connecting joint structure, comprise the body of wall of surrounding and the floor of level, it is characterized in that: the prefabricated units that have vertically been provided with connection function of described neighboring walls, described prefabricated units side is provided with groove, described body of wall is provided with the projection matching with prefabricated units groove, described prefabricated units top vertical offers the grout hole that simultaneously runs through prefabricated units and body of wall, in described grout hole, is provided with reinforcing bar.

2. low layer assembling combined wall according to claim 1 house tenon formula connecting joint structure, is characterized in that: described grout hole is two or more.

3. low layer assembling combined wall according to claim 1 house tenon formula connecting joint structure, is characterized in that: described reinforcing bar height is greater than the grout hole degree of depth.

4. low layer assembling combined wall according to claim 1 house tenon formula connecting joint structure, is characterized in that: described prefabricated units are higher than body of wall, the thickness that its difference in height is floor.

5. low layer assembling combined wall according to claim 4 house tenon formula connecting joint structure, is characterized in that: described floor surrounding is provided with flange, and described flange is built in body of wall top.

6. low layer assembling combined wall according to claim 1 house tenon formula connecting joint structure, is characterized in that: described prefabricated units are column, and cross section is L font, and described groove is positioned at two ends of prefabricated units side.

7. low layer assembling combined wall according to claim 1 house tenon formula connecting joint structure, is characterized in that: described prefabricated units are column, and cross section is T font, and described groove is positioned at three ends of prefabricated units side.

8. low layer assembling combined wall according to claim 1 house tenon formula connecting joint structure, is characterized in that: described prefabricated units are column, and cross section is cross, and described groove is positioned at four ends of prefabricated units side.