CN209369018U - An assembled prefabricated concrete balcony - Google Patents

Abstract

The utility model belongs to the technical field of buildings, in particular to an assembled prefabricated concrete balcony. Including prefabricated concrete main beam, precast concrete cantilever beam, prefabricated concrete beam, prefabricated balcony plate, nuts, bolts, the middle position of the beam top of the main beam body of the prefabricated concrete main beam is provided with a reserved empty slot, and the main beam There is a horizontal connection frame inside the concrete at the horizontal connection between the beam body and the reserved empty slot, and an average of 3 horizontal connection installation ports are arranged on the horizontal connection frame. The same reserved holes A are connected. The beneficial effects and advantages of the utility model are dry construction, energy saving, environmental protection, resource consumption reduction, high bearing capacity, convenient construction, fast construction speed, firm connection, convenient transportation, and shortened working hours. Improve industrialization efficiency.

Description

An assembled prefabricated concrete balcony

technical field

The utility model belongs to the technical field of buildings, in particular to an assembled prefabricated concrete balcony.

Background technique

The development of prefabricated concrete buildings began in the 1950s. After research, rapid development, use and slow development, after 2000, when the country developed a low-carbon economy, prefabricated concrete buildings were characterized by low energy consumption and low construction costs. With the characteristics of fast speed and less environmental pollution, it has gradually entered a new stage of development. Moreover, in 2010, the "Interim Measures on the Implementation of Area Incentives and Other Preferential Measures for Industrialized Housing Projects" and "Guiding Opinions on Promoting the Industrialization of Housing in this City" were successively launched in the capital to effectively guide the implementation of prefabricated housing projects . Moreover, many industry associations, design institutes and housing construction departments in the country have gradually carried out research work on prefabricated technology, and have issued "Technical Regulations for Integral Prestressed Prefabricated Slab-Column Buildings", "Prestressed Concrete Floor for Laminated Slabs" and Standards and regulations such as the "Code for Fabrication, Construction and Acceptance of Prefabricated Integral Residential Concrete Components" have effectively boosted the development of related industries. Since then, in 2016, the country has further strengthened the application of prefabricated buildings, and plans to make the proportion of this building application account for about 30% of the building proportion in the next 10 years. It can be seen that with the support of the national government, prefabricated concrete buildings have good development prospects.

The prefabricated building pays attention to the protection of the environment and resources. During the construction process, it effectively reduces the emission of construction sewage, harmful gases, dust and construction noise pollution, reduces the various impacts of construction on the surrounding environment, and is conducive to improving the construction efficiency. Labor productivity promotes the refinement of design and construction, improves the overall quality of buildings and the rate of energy conservation and drainage reduction, promotes the healthy and sustainable development of my country's construction industry, and meets the needs of national economic development.

Under the background of vigorously promoting the transformation of economic development mode, adjusting industrial structure and vigorously promoting energy conservation and emission reduction, the local governments of Beijing, Shanghai, Shenyang, Shenzhen, Jinan, Hefei and other cities focus on the construction of affordable housing and have successively issued policies to support buildings. Local policies for industrial development. Domestic large-scale real estate development companies, general contracting companies and prefabricated component manufacturers have also taken action to increase investment in construction industrialization. From a national perspective, the construction industrialization represented by the rapid development of new prefabricated concrete assembly structures has entered a new round of rapid development. This period is a period when my country's housing industry is truly advancing in an all-round way, and the process of industrialization is also gradually accelerating, but overall there is still a big gap compared with developed countries. With the gradual progress of my country's architectural design and construction technology, the content of the design has also changed from the initial consideration of a single form to a balance between form, function and environmental protection, and the prefabricated assembly system can almost meet various types. architecture. In fact, prefabricated buildings have emerged as early as decades ago. In recent years, with the increasing pressure of dual demand at home and abroad, prefabricated building forms have been proposed and applied again. At present, some enterprises in Shanghai have adopted prefabricated buildings in residential projects.

North America is mainly dominated by the United States and Canada. Due to the long-term research and promotion of precast buildings by the Precast/Prestressed Concrete Association (PCI), the relevant standards and specifications for precast concrete are also very complete. Therefore, its prefabricated concrete building application is very common. Prefabricated buildings in North America mainly include two series of building prefabricated exterior walls and structural prefabricated components. The common feature of prefabricated components is the combination of large-scale and prestress. It can optimize the structural reinforcement and connection structure, reduce the workload of fabrication and installation, shorten the construction period, and fully reflect the characteristics of industrialization, standardization and technical economy. In the 20th century, prefabricated buildings in North America were mainly used in low-rise non-seismic fortified areas. Due to the impact of earthquakes in the California area, in recent years, great attention has been paid to the research on engineering application technology of earthquake resistance and mid-high-rise prefabricated structures. PCI recently published the book "Seismic Design of Prefabricated Concrete Structures", which systematically analyzes the seismic design of prefabricated buildings from the perspective of theory and practice, and summarizes the latest scientific research achievements in the seismic design of prefabricated structures. Promotion has a strong guiding significance.

Europe is the birthplace of prefabricated buildings, and the road to industrialization of buildings began as early as the 17th century. After the Second World War, due to the shortage of labor resources, Europe further studied and explored the industrialization model of construction. Whether it is economically developed Northern Europe, Western Europe, or economically underdeveloped Eastern Europe, they have been actively promoting the design and construction of prefabricated concrete buildings. Accumulated a lot of experience in the design and construction of prefabricated buildings, formed various special prefabricated building systems and standardized general prefabricated product series, and compiled a series of precast concrete engineering standards and application manuals, which played a role in promoting the application of precast concrete in the world very important role.

Drawing on the successful experience of Europe and the United States, Japan and South Korea have made breakthroughs in the overall seismic and isolation design of prefabricated structural systems on the basis of exploring the standardized design and construction of prefabricated buildings and combining their own requirements. Representative achievements are the two 58-story Tokyo Towers built in Japan in 2008 using prefabricated frame structures. At the same time, the standard specifications for the design, production and construction of precast concrete building systems in Japan are also very complete. The prefabricated specifications currently in use include "Precast Concrete Engineering" (JASSl0) and "Concrete Curtain Wall) (JASSl4).

Prefabricated concrete buildings and masonry buildings with prefabricated hollow-core slabs have become the two most important building systems, with an application penetration rate of over 70%. Due to the many limitations and deficiencies in the functions and physical properties of prefabricated buildings, my country's prefabricated concrete building design and construction technology research and development level cannot keep up with social needs and changes in the development of construction technology. By the mid-1990s, prefabricated concrete buildings had been gradually replaced by all-cast-in-place concrete building systems. At present, except for prefabricated single-storey industrial plant building systems, other prefabricated building systems are rarely used in engineering applications. Insufficient research on the anti-seismic integrity of prefabricated structures and professional design and construction management results in poor technical and economic efficiency. This is the root cause of the long-term stagnation of prefabricated structures.

Between 1940 and 1942, British P.W. Eberlis first proposed to use the prestressed thin slab as a formwork in the lower part and form a whole with the cast-in-place concrete in the upper part. From the late 1940s to the early 1950s, Britain, the Soviet Union, Switzerland, Sweden, France, Poland, Austria and other countries began to adopt this type of floor. It developed rapidly in the 1960s and 1970s, especially in France and the Federal Republic of Germany, and has been widely used in various housing constructions. Trial production was carried out in China in 1980. After structural tests with various spans and different loads, it was first used in the 27-storey Xiyuan Hotel project in Beijing in 1981, with an area of about 20,000 square meters. Since then, it has been promoted in some high-rise tourist hotels, office buildings, diplomatic apartments, warehouses and other projects.

From the research and application experience at home and abroad, prefabricated frame structure, prefabricated shear wall structure, prefabricated frame-cast-in-place shear wall (core tube) structure system can be used. The load-bearing components in the structure can be all prefabricated components or a combination of prefabricated and cast-in-place components. Among them, the prefabricated assembly shear wall structure can be divided into fully prefabricated shear wall structure, partial prefabricated shear wall structure and multi-layer shear wall structure with appropriately reduced structural performance requirements. Prefabricated assembled frame structure and prefabricated assembled frame-cast-in-place shear wall (core tube) frame, beams and columns are all prefabricated components, and the joints and joints between load-bearing components are in accordance with the requirements of the same cast-in-place structure design and construction. The structural system has the same performance as the cast-in-place structure, and the applicable height, seismic level and design method of the structure are basically the same as the cast-in-place structure. Fully prefabricated shear wall structure means that all shear walls are assembled and assembled with prefabricated components. The joints between the prefabricated walls are basically equal to or slightly lower than the cast-in-place structures. It is necessary to meet the bearing capacity and deformation requirements of the joints through design calculations, and consider the impact of the joints in the overall structural analysis. The prefabrication rate of this structural system is high, but the connection structure of the joints is relatively complicated, and the construction is difficult. It is difficult to ensure that it is completely equivalent to the cast-in-place shear wall structure. The current research and engineering practice are not sufficient. The promotion in the earthquake zone Applications require further research work.

Utility model content

In order to solve the above existing technical problems, the utility model provides an assembled precast concrete balcony, mainly for the purpose of developing an assembled precast concrete balcony with good integrity, clear force transmission, simple structure, safety and reliability, material saving and convenient construction , It can effectively solve the problems of difficult transportation, cumbersome construction, long construction period, and waste of materials.

Technical scheme of the utility model:

An assembled prefabricated concrete balcony, comprising a prefabricated concrete main girder, a prefabricated concrete cantilever beam, a prefabricated concrete beam, a prefabricated balcony plate, nuts, and bolts. Reserve an empty slot, and set a horizontal connecting frame inside the concrete at the horizontal connection between the main beam body and the reserved empty slot. On the horizontal connecting frame, an average of 3 horizontal connecting installation ports are arranged, and the gap between the horizontal connecting installation port and the reserved empty slot There is a reserved hole A with the same diameter as the installation port of the transverse connection. L-shaped plate grooves are arranged on the inner side of the cantilever beam body of the precast concrete cantilever beam. There are three reserved holes B on the inner side of the vertically extending steel bars. There is a reserved hole slot in the middle of the beam body of the precast concrete beam. Vertical connecting frames are set at both ends of the beam body. The thickness of the upper edge and the lower edge of the body is the same, and the prefabricated balcony slab body is provided with outstretched steel bars B, and there are reserved holes C on both sides of the slab body along the direction of the outstretched steel bars B, and one end of the two precast concrete cantilever beams is connected with the prefabricated The concrete main beams are connected together, and the precast concrete beams are placed on the other end of the precast concrete cantilever beam. The empty slots are flush, and the precast concrete cantilever beam extension steel bar A is inserted into the vertical connection installation port of the precast concrete beam, fastened with nuts, and the prefabricated balcony slab is inserted into the reserved hole slot of the precast concrete beam, Insert the outrigger steel bar B into the reserved hole A on the precast concrete main beam, and fasten it with nuts, and the bolts pass through the reserved hole C on the prefabricated balcony slab and the precast concrete The hole B on the cantilever beam is reserved and fastened with nuts.

Further, the thickness of the prefabricated balcony slab is completely consistent with the vertical height dimension of the reserved empty slot, reserved hole slot, and L-shaped plate slot, and the horizontal width of the prefabricated balcony slab, reserved empty slot, and reserved hole slot is the same as that of the two prefabricated balcony slabs. The spacing between the L-shaped plate grooves on the concrete cantilever beam is the same, and the reserved empty grooves, reserved hole grooves, and the bottom of the inner L-shaped plate grooves are completely flush.

Further, the transverse connecting frame includes transverse connecting end plates, transversely stressed connecting ribs, and transverse connecting holes, and one end of several transversely stressed connecting ribs is respectively welded to the transversely connecting end plates, and the transversely stressed connecting ribs are evenly distributed. There are transverse connecting holes between the transversely stressed connecting ribs and the transversely connecting end plates.

Beneficial effects of the utility model:

The beneficial effects and advantages of the utility model are dry construction, energy saving and environmental protection, reduced resource consumption, high bearing capacity, convenient construction, fast construction speed, firm connection, convenient transportation, shortened working hours, and significantly improved industrialization efficiency.

Description of drawings

Fig. 1 is a top view of an assembled prefabricated concrete balcony of the present invention.

Figure 2 is a top view of the precast concrete girder.

Figure 3 is a front view of the precast concrete girder.

Figure 4 is a top view of a precast concrete cantilever beam.

Figure 5 is a front view of the precast concrete cantilever beam.

Figure 6 is a front view of the precast concrete beam.

Figure 7 is a top view of the prefabricated concrete balcony.

Figure 8 is a schematic diagram of the transverse connecting frame.

Fig. 9 is an elevation view of the transverse connection end plate.

In the figure, 1 is the precast concrete main beam, 2 is the precast concrete cantilever beam, 3 is the precast concrete beam, 4 is the prefabricated balcony, 5 is the nut, 6 is the bolt; 1-1 is the main beam body; 1-2 is the precast 1-3 is the horizontal connecting frame; 1-4 is the horizontal connection installation port; 1-5 is the reserved hole A; 2-1 is the cantilever beam body; 2-2 is the L-shaped plate groove; 2- 3 is a cuboid beam body; 2-4 is an extended steel bar A; 2-5 is a reserved hole B; 3-1 is a beam body; 3-2 is a reserved hole groove; 3-3 is a vertical connecting frame; 3-4 is the vertical connection installation port; 4-1 is the balcony board body; 4-2 is the extended steel bar B; 4-3 is the reserved hole C.

Detailed ways

In order to further illustrate the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be understood as limiting the protection scope of the utility model.

Embodiment: As shown in Figures 1 to 9, an assembled precast concrete balcony of the present invention includes a precast concrete main beam 1, a precast concrete cantilever beam 2, a precast concrete beam 3, a precast balcony plate 4, nuts 5, and bolts 6 , the middle position of the main beam body 1-1 of the precast concrete main beam 1 is provided with a reserved empty slot 1-2 at the horizontal connection between the main beam body 1-1 and the reserved empty slot 1-2 A horizontal connection frame 1-3 is arranged inside the concrete, and three horizontal connection installation ports 1-4 are arranged on average on the horizontal connection frame 1-3, and a connection with the horizontal connection installation port 1-4 and the reserved empty slot 1-2 is provided The horizontal connection installation openings 1-4 are connected with the reserved holes A1-5 with the same diameter, and the inner side of the cantilever beam body 2-1 of the precast concrete cantilever beam 2 is provided with an L-shaped plate groove 2-2, and the outer end of the cantilever beam body 2-1 A cuboid beam body 2-3 is provided, three vertically extending steel bars A2-4 are arranged on the outside of the cuboid beam body 2-3, three reserved holes B2-5 are arranged on the inside, and the beam body 3-1 of the prefabricated concrete beam 3 There is a reserved hole 3-2 at the middle position, vertical connecting frames 3-3 are arranged at both ends of the beam body 3-1, and the thickness from the reserved hole 3-2 to the upper and lower edges of the beam body 3-1 is the same , the board body 4-1 of the prefabricated balcony board 4 is provided with an outstretched steel bar B4-2, and a reserved hole C4-3 is provided on both sides of the board body along the direction of the extended steel bar B4-2, and the two prefabricated concrete cantilever beams 2 One end is connected with the precast concrete main beam 1, the precast concrete beam 3 is placed on the other end of the precast concrete cantilever beam 2 on the cuboid beam body 2-3, the reserved hole 3-2 of the precast concrete beam 3 is connected with the precast concrete cantilever beam 2 The L-shaped slab groove 2-2 on the top, the reserved empty groove 1-2 of the precast concrete main beam 1 are flush, and the precast concrete cantilever beam 2 protruding reinforcement A2-4 is inserted into the precast concrete beam 3 vertical connection installation port 3-4 , fasten with nut 5, insert the prefabricated balcony slab 4 into the reserved hole 3-2 of the precast concrete beam 3, and follow the L-shaped plate groove 2-2 inside the precast concrete cantilever beam 2 to the reserved empty groove 1 of the main beam In -2, the prefabricated balcony slab 4 extended steel bar B4-2 is inserted into the reserved hole A1-5 of the prefabricated concrete main beam 1, and is connected and fastened with the nut 5, and the bolt 6 passes through the reserved hole C4-3 of the prefabricated balcony slab 4 and A hole B2-5 is reserved in the precast concrete cantilever beam 2, and is fastened with a nut 5.

The thickness of the prefabricated balcony board 4 is exactly the same as the vertical height dimension of the reserved empty slot 1-2, the reserved hole slot 3-2, and the L-shaped board slot 2-2. The prefabricated balcony board 4 and the reserved empty slot 1-2 2. The transverse width of the reserved hole slot 3-2 is the same as the distance between the L-shaped plate slots 2-2 on the two precast concrete cantilever beams 2. The reserved empty slot 1-2, the reserved hole slot 3-2, and the inner side L The bottom of the template groove 2-2 is completely flush.

The transverse connection frame 1-3 includes a transverse connection end plate 1-3-1, a transverse force connection rib 1-3-2, a transverse connection hole 1-3-3, and several transverse force connection ribs 1-3- One end of 2 is welded to the transverse connecting end plate 1-3-1 respectively, and the transversely stressed connecting ribs 1-3-2 are evenly distributed, and between the transversely stressed connecting ribs 1-3-2 and the transversely connecting end plate 1-3 -1 has a transverse connecting hole 1-3-3.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (3)

1. a kind of prefabricated concrete balcony, including it is precast concrete girder (1), concrete cantilever beam (2), prefabricated Concrete beam (3), prefabricated balcony plate (4), nut (5), bolt (6), it is characterised in that: the precast concrete girder (1) girder beam body (1-1) back middle position is equipped with reserved empty slot (1-2), in girder beam body (1-1) and reserved empty slot (1- 2) inside concrete is equipped with lateral connection frame (1-3) at horizontal connection, and 3 transverse directions are averagely arranged on lateral connection frame (1-3) and connect It connects installing port (1-4), is equipped with and lateral connection installing port (1-4) between lateral connection installing port (1-4) and reserved empty slot (1-2) The identical reserving hole A(1-5 of diameter) it is connected, L-type is set on the inside of the cantilever beam beam body (2-1) of concrete cantilever beam (2) Board slot (2-2), the cantilever beam beam body outer end (2-1) are equipped with cuboid beam body (2-3), set on the outside of cuboid beam body (2-3) there are three Vertical protruding bar A(2-4), inside sets that there are three reserving hole B(2-5), the crossbeam beam body (3- of precast concrete crossbeam (3) 1) middle position is equipped with reserved hole slot (3-2), and vertical connection frame (3-3) is arranged in the crossbeam beam body both ends (3-1), reserves hole slot (3- 2) identical with lower edge thickness to the crossbeam beam body top edge (3-1), the plate body (4-1) of prefabricated balcony plate (4) is equipped with overhanging steel Muscle B(4-2), reserving hole C(4-3 is equipped with along the direction protruding bar B(4-2) plate body two sides), by two precast concrete cantilevers Beam (2) one end links together with precast concrete girder (1), and precast concrete crossbeam (3) is placed on concrete cantilever beam (2) in other end cuboid beam body (2-3), the reserved hole slot (3-2) and concrete cantilever beam of precast concrete crossbeam (3) (2) the reserved empty slot (1-2) of L-type board slot (2-2), precast concrete girder (1) on concordantly, concrete cantilever beam (2) Protruding bar A(2-4) insertion precast concrete crossbeam (3) vertically connect installing port (3-4) in, using nut (5) fasten, will be pre- In the reserved hole slot (3-2) of balcony slab (4) insertion precast concrete crossbeam (3) processed, along L on the inside of concrete cantilever beam (2) Template slot (2-2) to girder is reserved in empty slot (1-2), prefabricated balcony plate (4) protruding bar B(4-2) insertion precast concrete master Beam (1) reserving hole A(1-5), and using nut (5) connection fastening, bolt (6) passes through prefabricated balcony plate (4) reserving hole C (4-3) and concrete cantilever beam (2) reserving hole B(2-5), and using nut (5) connection fastening.

2. a kind of prefabricated concrete balcony according to claim 1, it is characterised in that: the prefabricated balcony plate (4) thickness and reserved empty slot (1-2), reserved hole slot (3-2), L-type board slot (2-2) vertical height size are completely the same, prefabricated sun Platen (4), reserved empty slot (1-2), reserved hole slot (3-2) transverse width and two concrete cantilever beam (2) L-type board slot (2- 2) spacing is identical between, and girder (1) reserves empty slot (1-2), crossbeam (3) reserves hole slot (3-2), cantilever beam (2) inside L-type board slot The bottom (2-2) is completely concordant.

3. a kind of prefabricated concrete balcony according to claim 1, it is characterised in that: the lateral connection frame (1-3) includes lateral connection end plate (1-3-1), lateral stressed dowel (1-3-2), lateral connection hole (1-3-3), several transverse directions One end of stress dowel (1-3-2) is welded with lateral connection end plate (1-3-1) respectively, and lateral stressed dowel (1-3-2) is excellent It is first uniformly distributed, has lateral connection hole (1-3- with lateral connection end plate (1-3-1) between lateral stressed dowel (1-3-2) 3)。