CN204163190U - A kind of layering prefabrication and assembly construction support steel structure system - Google Patents

Abstract

The utility model relates to a kind of layering prefabrication and assembly construction support steel structure system, comprise the through structural system of post layering, beam, semi-rigid joint the through full End-plate Connections of beam, by the six prism sleeve gailys decorated basket-band steel intercolumniation flexible support; The through structural system of post layering, beam comprises each layer of post and disconnects, beam is through every layer of maintenance, is directly connected by pillar end plate by bolt with flange of beam, adopts post beam successively mounting means in turn, effective minimizing work high above the ground, is convenient to the structural system of suitability for industrialized production; The through full End-plate Connections of semi-rigid joint beam, is comprised and being directly connected with flange of beam by styletable end plate by high strength bolt, and on beam, arrange above stiffening rib together; Intercolumniation flexible support adopts the six prism sleeve gailys decorated basket-band steel to support, comprise the six prism sleeves supporting tensioning portion and adopt machining shaping, flexible support member position adopts band steel, by selecting the band steel of suitable wood property and area, guarantees that plastic strain occurs in band steel part.

Description

A layered prefabricated assembly supporting steel structure system

technical field

The utility model belongs to the technical field of engineering, in particular to a layered prefabricated assembly supporting steel structure system.

Background technique

After decades of development in foreign countries as a mainstream residential product, low-story industrialized steel structure housing has a very complete technical system and rich supporting products, forming a mature industrial chain. Compared with the 1950s, foreign industrialized housing has undergone a change from the pursuit of quantity to the pursuit of quality, that is, it has gradually transformed from mass production, mass supply, and repetitive construction in the initial stage to better satisfying various levels and various needs. To meet the requirements of customers, we continue to develop new products with high quality, diversification, environmental protection, energy saving and high comfort.

In China, the prefabricated supporting steel structure system is mostly used for simple temporary houses such as prefabricated light steel temporary houses and security booths and low-rise steel structure residences at construction sites. The space and structure are simple and the technical content is not high. However, mature prefabricated steel structure systems applied to low-rise residential or office buildings have not yet appeared. Most of the low-layer steel structure systems have a low prefabrication rate, cannot realize modular production, and have a low degree of industrialization. There are many on-site welding operations, long cycle times, high labor costs, and quality cannot be guaranteed.

The root cause of this situation is that most of the existing steel structure systems are column-through-type steel structure systems, that is, the columns are kept connected from top to bottom, and the beam-column connections are mostly rigid connections, requiring a lot of bolt connections or welding work. At the same time, the beam-column frame of most steel structure systems needs to bear horizontal loads, resulting in a large beam-column section. On-site installation requires a crane, and the installation work is complicated and inefficient.

In order to solve the low prefabrication rate of the existing low multi-storey steel structure system, many on-site bolt connections and welding work, and high labor costs, it is necessary to propose a method that can almost achieve full prefabrication and assembly, with a high degree of industrial production and a high degree of technology integration. High prefabricated steel structure system.

Utility model content

The purpose of the utility model is to provide a layered prefabricated assembly supporting steel structure system that can realize full prefabricated assembly, has a high degree of industrialized production, a high degree of integration, a short construction period, and is conducive to industrialized construction.

In order to achieve the above purpose, the layered prefabricated assembly supporting steel structure system proposed by the utility model is composed of column 1, beam 2, flexible support 3, beam-column connection node 4, ear plate 6 and foundation 5, wherein: the upper part of foundation 5 is parallel Several layers of beams 2 are arranged, and a number of vertically arranged columns 1 are arranged between adjacent beams 2, forming a structure in which columns are layered and beams pass through, and flexible supports 3 are arranged between adjacent columns 1 diagonally , the end of the flexible support 3 is connected to the beam-column connection node 4 through the ear plate 6, the ear plate 6 and the column end end plate 10 are connected by column end high-strength bolts 11, and several adjacent beams 2 are provided Stiffeners 8 located between the columns 1 arranged one above the other.

In the utility model, the ear plate 6 is supported by a six-column sleeve flower basket-flat steel, including a support connecting plate 14, a hexagonal column sleeve 16, a screw 18 and a flat steel 19, and the screw 18 extends into the hexagonal column sleeve Inside the barrel 16, the end is provided with a screw thread 17, and one end of the screw rod 18 is connected to one end of the flat steel 19 by a fillet weld, and the cross-sectional area of the flat steel 19 is smaller than the minimum area of the screw rod 18; the other end of the flat steel 19 is connected to a supporting connecting plate 14. The other end of the screw rod 18 is connected to the supporting connecting plate 14, and the supporting connecting plate 14 is provided with a bolt hole 15, and the supporting connecting plate 14 is connected to the column end ear plate through the bolt hole 15 and the bolt on it.

In the utility model, the screw rod 18 adopts round steel.

In the utility model, the length of each column 1 is close to the floor height, and can be directly installed manually without using a crane.

In the present utility model, the column 1 or the beam 2 adopts components with a basic modulus of 900mm or 1200mm.

In the present invention, the structural systems are used in combination, and the beam end plates 13 between adjacent beams are connected by beam end high-strength bolts 12 .

The utility model adopts a structural system of beams connected and columns layered, and the beams and columns are kept at the joints of the beams and the columns are layered. Moreover, the length of each column 1 is only about 3m, and the weight is about 30kg, so it can be directly installed manually without using a crane.

The column-beam components are installed layer by layer, and the bottom beam can be installed on the bottom layer to form a construction platform before the installation of the upper layer of columns, thus effectively reducing high-altitude operations and greatly improving construction efficiency while improving safety.

When designing, first consider designing according to the modulus. When the structural system is laid out, the types of components (especially beams and supports) are limited by standardization, that is, 1P (1200mm) is used as the basic modulus instead of smaller modulus units. (such as 100mm or 300mm).

The cross-sectional dimensions of various components are as uniform as possible (no more than 3 types), and various structural performance requirements are met by changing the thickness of the plate, and their performance is clarified through experimental research in advance, that is, the development of standardized components. The dimensions of the cross-section of the beams on each floor are consistent, that is, all beams use the same cross-section.

Each floor of the column adopts the same cross-section, and the cross-section of the column on the upper floor can be reduced, but there are no more than three types of column cross-sections in the same structure.

The beam through-type full-bolt end-plate connection node is adopted, that is, the column end plate and the beam flange are directly connected by 4 or more pressure-bearing high-strength bolts. Compared with ordinary beam-column joints, the number of bolts is greatly reduced, thus effectively reducing labor costs.

Beam-to-column, beam-to-beam, and column-to-support members are all connected by pressure-bearing high-strength bolts instead of friction-type high-strength bolts. Since strict torque control is not required, and the connection contact surface does not require special treatment, the same construction method as ordinary bolts is allowed. On the one hand, the size of the bolts used can be smaller than ordinary bolts when the same node bearing capacity is achieved. On the other hand, It also simplifies the construction process.

More than one stiffener is set on the beam, so that the beam-column joints have a certain bending stiffness and bearing capacity, so that the column can bear a certain horizontal force under a large earthquake and play the role of the second anti-seismic defense line.

The system adopts the flexible support between the hexagonal column sleeve flower basket and the flat steel column. In the elastic stage, all the horizontal force is borne by the flexible support, so that the column only bears the vertical load, and the cross-sectional area of the column is effectively reduced.

The beneficial effect of the utility model is that the construction efficiency is greatly improved by adopting the structural system of column layering and beam penetration; all components are connected by pressure-bearing high-strength bolts, which simplifies the construction process and saves labor costs; The modulus design is adopted, with 1200mm as the basic modulus, and at the same time, the cross-sectional dimensions of the same member type do not exceed 3 types, and the limit member type improves the degree of industrialization and high degree of integration; through the use of bolts with more than one stiffening rib on the beam The end plate is connected to the beam-column joint, and the joint is a semi-rigid joint. The beam-column connection is regarded as a hinge joint at the time of elastic design, thus simplifying the design method. Under the action of a large earthquake, the joint has a certain stiffness and bearing capacity, which can ensure The structure has a second line of earthquake resistance.

Description of drawings

Fig. 1 is a schematic view of the front elevation of the structure of the embodiment of the utility model.

Fig. 2 is a schematic side elevational view of the structure of the embodiment of the utility model.

Fig. 3 is a schematic plan view of the structure of the embodiment of the utility model.

Fig. 4 is a schematic diagram of the installation process of the embodiment of the utility model.

Figures 5-1 and 5-2 are the elevation and plane schematic diagrams of the beam-to-column connection (one stiffening rib is set on the beam) of the utility model embodiment.

Figures 6-1 and 6-2 are the elevation and plane schematic diagrams of the beam-column connection (two stiffeners are set on the beam) of the utility model embodiment.

Figures 7-1 and 7-2 are the elevation and plan views of the beam-beam connection of the embodiment of the utility model.

Fig. 8 is a schematic diagram of the connection between the support and the beam-column node of the embodiment of the utility model.

Fig. 9 is a schematic diagram of the supporting structure of the embodiment of the utility model.

Numbers in the figure: 1 is column, 2 is beam, 3 is flexible support, 4 is beam-column connection node, 5 is foundation, 6 is lug plate, 7 is beam-beam connection node, 8 is stiffener, 9 is ordinary bolt, 10 is the end plate at the column end, 11 is the high-strength bolt at the column end, 12 is the high-strength bolt at the beam end, 13 is the end plate at the beam end, 14 is the support connecting plate, 15 is the bolt hole, 16 is the hexagonal column sleeve, 17 is the thread, 18 is the Screw rod, 19 is flat steel.

Detailed ways

Below in conjunction with the embodiment shown in the accompanying drawings the utility model is further described.

Embodiment 1: As shown in Figures 1, 2, and 3, a layered prefabricated assembly supporting steel structure system applied to low-level multi-storey, including a structure system in which column 1 is layered and beam 2 penetrates, and the modular design Hexagonal column sleeve flower basket-flexible support between flat steel columns 3, semi-rigidly connected beam through-type full-bolt end plate longitudinal beam-column connection node 4. The flexible support 3 is arranged between adjacent columns 1, and is connected to the beam-column connection node 4 through the lug plate 6, the beam-beam connection node 7 is directly connected through the beam end plate 13 with beam end high-strength bolts 12, and the overall structure is connected through the column end plate 10 Connect with foundation 5 with anchors or bolts. The beam-to-column connection nodes 4 and beam-to-beam connection nodes 7 of this structure are all connected by bolts and end plates, the construction process is simple, and there is no welding operation during on-site installation, which greatly reduces labor costs and construction periods.

As shown in Figure 4, because the structure has the characteristics of column layering and beam penetration, the length of each column 1 is only about 3m, and it can be directly installed manually without using a crane. The column-beam components are installed layer-by-layer sequentially, and the installation of the upper layer of columns can be carried out after the installation of the bottom beams is completed to form a construction platform. This "layered assembly" installation method similar to building blocks can effectively reduce high-altitude operations and greatly improve construction efficiency while improving safety.

For the beam-column connection nodes shown in Figures 5-1, 5-2, 6-1, and 6-2, the column 1 and the beam 2 are connected by four or more pressure-bearing high-strength bolts 11 at the end of the column. It is directly connected with the flange of the beam 2, and at the same time, more than one stiffener 8 is set on the beam 2. Compared with the traditional beam-column rigid connection structure, such a connection structure is more conducive to on-site installation, greatly reduces the workload of bolt connection and welding, and improves construction efficiency.

As shown in Figure 7-1 and 7-2, the beam-beam connection node is directly connected to the beam end plate 13 through the high-strength bolts 12 at the beam end. This structure ensures that the beam remains connected on each floor and greatly reduces the Reduced the workload of on-site workers and improved construction efficiency.

As shown in Figure 8, the connection between the flexible support 3 and the beam-column node is directly connected to the lug plate 6 and the support connection plate 14 through ordinary bolts 9, and the lug plate 6 is connected to the wall of the column 1 and the column end of the column 1 through fillet welds. End plates 10 are connected.

The structure of the flexible support 3 is shown in Figure 9. Considering the unstable quality of the traditional bifurcated flower basket (cast iron material), the tensioning part of the support adopts a machined hexagonal prism sleeve 16, the material is S45C, and the screw rod 18 adopts Q345 round steel , The end is processed as M24 specification thread 17, to ensure that the yield bearing capacity of this part is 1.1 times higher than the design value of the tensile bearing capacity of the screw rod 18. In addition, in order to avoid the phenomenon that the screw rod 18 is pulled out due to the severe cyclic load during the earthquake, the effective length of the screw thread 17 is designed to be more than 35mm; the flexible supporting member is made of flat steel 19, the material is Q235B, and the cross-sectional area It must be smaller than the minimum area of the screw rod 18 at the tensioning position to ensure that the design value of the tensile bearing capacity of the screw rod 18 is 1.5 times higher than that of the design value of the tensile bearing capacity of the flat steel 19. Bolt holes 15 are provided, and ordinary bolts 9 are used to directly connect the supporting connecting plate 14 to the ear plate at the column end.

Claims (6)

1. a layering prefabrication and assembly construction support steel structure system, by post (1), beam (2), flexible support (3), beam-column connection (4), otic placode (6) and basis (5) composition, it is characterized in that: be arranged in parallel above basis (5) some layers of beam (2), some vertically arranged posts (1) are provided with between adjacent beam (2), form post layering, the structure that beam is through, flexible support (3) is provided with between diagonally opposing corner between adjacent post (1), flexible support (3) end is connected with beam-column connection (4) by otic placode (6), described otic placode (6) is connected by styletable high-strength bolt (11) with styletable end plate (10), some stiffening ribs (8) are provided with between described adjacent beam (2), described stiffening rib (8) is positioned between the post (1) arranged up and down.

2. layering prefabrication and assembly construction support steel structure system according to claim 1, it is characterized in that described otic placode (6) adopts the six post column sleeve cylinder gailys decorated basket-band steel to support, comprise support and connection plate (14), six prism sleeves (16), screw rod (18) and band steel (19), described screw rod (18) stretches in six prism sleeves (16), its end is provided with screw thread (17), described screw rod (18) one end adopts fillet weld to be connected with band steel (19) one end, and band steel (19) sectional area is less than the minimum area of screw rod (18); Band steel (19) other end connects support and connection plate (14), described screw rod (18) other end connects support and connection plate (14), described support and connection plate (14) is provided with bolt hole (15), and described support and connection plate (14) is connected with styletable otic placode with bolt by the bolt hole (15) be located thereon.

3. layering prefabrication and assembly construction support steel structure system according to claim 1, is characterized in that described screw rod (18) adopts round steel.

4. layering prefabrication and assembly construction support steel structure system according to claim 1, is characterized in that the length of described every root post (1) is close to floor height.

5. layering prefabrication and assembly construction support steel structure system according to claim 1, is characterized in that described post (1) or beam (2) adopt 900mm or 1200mm to be the component of basic module.

6. layering prefabrication and assembly construction support steel structure system according to claim 1, is characterized in that described structural system combinationally uses, and the beam-ends end plate (13) between adjacent beam is connected by beam-ends high-strength bolt (12).