CN210887559U - Low multi-storey steel structure residential system - Google Patents

Abstract

The utility model discloses a low multi-storey steel structure residential system. The system comprises a steel tube concrete side column, a hinged column, a horizontal through beam and an X-shaped cross anti-side unit; Between adjacent side columns and inside the structure, the hinged column is vertically arranged inside the structure, and is detachably connected to the upper and lower horizontal through beams in each layer, and the anti-side unit is detachably connected to some adjacent hinged columns or hinged joints. between the column and the side column. All components can be prefabricated and assembled on site in the factory, and all components are detachably connected, with a high degree of assembly, and the layout can be flexibly changed according to building needs; side columns and hinged columns are used for vertical load-bearing, and anti-side units provide The main structure is anti-side, realizing the separation of load-bearing and anti-side functions, and the side column and horizontal beam joints provide partial anti-side reserve; each component adopts common small-sized components, which reduces the construction cost and facilitates the transportation of components in villages, towns and remote areas.

Description

Low-rise steel structure residential system

technical field

The utility model belongs to the technical field of construction engineering, in particular to a low multi-storey steel structure residential system.

Background technique

At present, the proportion of urbanization in my country is still relatively low. The buildings in large areas outside the urban area are mainly low-storey village houses, and most of the rural houses are self-built. From the construction method, the building materials often require simple components. , on-site selection of materials or self-built by residents, etc., and poor integrity and earthquake resistance; in terms of structural characteristics, most of them are low-rise residences with 1-3 floors, the use functions and load types are relatively simple, and most of the materials are raw soil, red brick, bamboo Wooden or stone-earth structures.

In recent years, my country has carried out village and town reconstruction and beautiful countryside construction plans, and will carry out overall upgrading and renovation of village and town buildings and planning to improve people's living conditions. At the same time, under the background that my country's seismic requirements for building structures are gradually increasing, research and develop low-level prefabricated steel structures that are suitable for use in villages and towns, have good lateral seismic performance, and can be quickly assembled and constructed at low cost. Housing is of great practical significance.

Most of the existing steel structure houses in villages and towns adopt cold-formed thin-walled structural system, and the main structure adopts light steel keel frame and light steel keel composite wallboard. In this structural system, the light steel keel composite wall panel is used as a vertical load-bearing wall, so that the internal wall panel cannot be changed or removed at will after the construction is completed, resulting in the limited use of the house.

Moreover, when the traditional frame structure is used as the skeleton of low-level village houses, the beam-column members need to provide sufficient lateral stiffness in addition to vertical load-bearing, and the members and nodes need to provide sufficient flexural bearing capacity, so the size is large. , resulting in higher construction costs and limited promotion in rural areas and villages. In addition, when the frame steel structure is applied, most of the nodes need to be rigidly connected to provide sufficient structural rigidity and lateral resistance. The requirements for node construction are relatively high, and the construction quality in villages and towns is often difficult to guarantee, resulting in potential safety hazards.

Utility model content

The purpose of this utility model is to aim at the deficiencies of the prior art, to provide a low-level multi-storey steel structure residential system that can meet the use and stress requirements of residential structures in villages and towns, and has a high degree of assembly, easy construction and reduced cost. .

The low multi-storey steel structure residential system provided by the utility model includes concrete-filled steel tube side columns, hinged columns, horizontal through beams and X-shaped cross-side anti-side units; The beam and the middle beam, the side beams are detachably connected between the two adjacent CFST side columns, and the middle beam is connected between the adjacent two side beams; the hinged columns are vertically arranged, and the two ends are detachably connected to the upper and lower horizontal through beams respectively. ; X-shaped cross-side anti-side units can be detachably connected between adjacent hinged columns or between hinged columns and side columns.

The CFST side column adopts square steel pipe, the interior of the square steel pipe is filled with concrete, the high-strength bolts are pre-buried in the CFST side column, and the CFST side column is arranged vertically through; There are positioning holes on the lower wing plate, the two ends of the I-beam are welded to connect the end plates, and the stiffening rib plates are welded between the connecting end plate and the upper flange and the lower flange; the horizontal through beam is connected with the end plates at its ends It is connected with the concrete-filled steel tube side column through embedded high-strength bolts and nuts.

The hinged column comprises a hollow steel pipe and an end plate, the end plates are welded to both ends of the square steel pipe column; the hinged column is connected to the upper and lower horizontal through beams respectively through the end plates at both ends.

Two pairs of stiffening rib plates are arranged between the upper and lower wing plates of the horizontal through beam at the position where the hinged column is arranged.

The X-shaped cross anti-side unit is composed of a pair of X-shaped cross-arranged diagonal tie rods. The diagonal tie rod includes a tension member and a tie rod main body connected to both ends of the tension member, and the outer end of the tie rod main body is provided with an anchor head.

The tensioning member is a turnbuckle bolt, and the main body of the tie rod is a steel strand or threaded steel.

The X-shaped cross-side anti-side unit is connected to the hinged column or the concrete-filled steel tube side column through the connecting rib. The connecting rib is provided with a connecting hole, and the connecting rib is welded between the end plate and the hinged column. Its anchor head is connected with the connecting rib through a pin shaft.

The utility model first prefabricates each steel component in the factory, then arranges the prefabricated concrete-filled steel tube side column square steel pipe on the construction site, pours concrete into the square steel pipe and maintains it to the initial strength; hoisting the horizontal through beam, the horizontal through beam can be It is disassembled and connected between the side columns to form the main frame, and the hinged columns are detachably connected layer by layer between the upper and lower horizontal through beams or between the horizontal through beams and the foundation; between adjacent hinged columns in some wall areas inside the structure, or hinged Connecting rib plates and pin-shaft anchors are used to connect the X-shaped cross-bracing anti-side units between the column and the concrete-filled steel tube side column, and finally fill the wall plate. On the one hand, each component can be prefabricated in the factory and assembled on the construction site, and the components are detachably connected, which has a high degree of assembly, shortens the construction period, and facilitates later structural adjustment; The setting of the unit realizes the separation of load-bearing and side-resistance functions. The CFST side column and the hinged column are used for vertical load-bearing, and the side-resistance unit provides the main structure side-resistance; and the connection node between the horizontal penetrating beam and the side column can be used as the side-resisting function of the structure. Moreover, each component of the utility model adopts the common small-sized components and rigid tie rods and other components on the market, which can effectively reduce the construction cost and facilitate the transportation of components in villages, towns and remote areas.

Description of drawings

FIG. 1 is a schematic diagram of the layout of a preferred embodiment of the present invention.

Figure 2 is a schematic cross-sectional view of a CFST side column.

FIG. 3 is a schematic diagram of the connection node of the end plate bolts of the horizontal through beam and the CFST side column in the preferred embodiment.

FIG. 4 is a schematic diagram of the arrangement of the hinged column and the X-shaped cross anti-side unit in this preferred embodiment.

FIG. 5 is an enlarged schematic view of the connection nodes of the hinged column, the horizontal through beam and the X-shaped cross side anti-side element in the preferred embodiment.

Icon serial number:

1—CFST side column, 11—Square steel pipe, 12—Filled concrete;

2—horizontal through beam;

3—Hinged column, 31—Hollow steel pipe, 32—End plate, 33—Bolt;

4—X-type cross-resisting side unit, 41—anchor head, 42—tension member, 43—tie rod main body, 44—connecting rib;

5—connecting end plate; 6—stiffening rib plate; 7—high-strength bolt; 8—vertical stiffening rib plate.

Detailed ways

This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

As shown in FIG. 1 , the low-rise steel structure residential system disclosed in this embodiment includes concrete filled steel tubular side columns 1 , horizontal through beams 2 , hinged columns 3 and cross-bracing anti-side units 4 .

As shown in Figure 2, the CFST side column 1 is formed by filling the concrete 12 with the square steel pipe 11. The side length of the square steel pipe 11 is selected within 100-200mm according to the force requirement. There are through holes on the side wall of the steel pipe; the inner filling concrete 12 is cast on site, and the concrete strength grade is between C20-C40. Before the inner core is poured, high-strength bolts 7 are embedded in the square steel pipe 11, and the head of the bolt is in the through hole. The hole protrudes to connect with the connecting end plate 5 of the horizontal through beam 2 .

As shown in Figure 3 and Figure 4, the horizontal through beam 2 is an I-beam beam, and connecting plate end plates 5 are fixedly connected at both ends of the horizontal through beam 2. The four corners of the connecting plate are provided with through holes, and between the connecting plate and the horizontal through beam The stiffening rib plate 6; the end plate of the horizontal through beam is fastened to the concrete-filled steel tube side column 1 by bolts. The lateral seismic performance reserve of the structure.

Positioning holes are reserved on the upper and lower wing plates of the horizontal through beam 2 for installing the hinged column 3, and two pairs of vertical stiffening rib plates 8 are welded between the two wing plates corresponding to the side wall area of the square steel pipe of the hinged column to ensure the protection of the vertical load. transfer to ensure the strength of the entire skeleton.

As shown in Figure 4, the hinged column 3 is composed of a hollow steel pipe 31 and connecting end plates 32 at both ends. The main hollow steel pipe of the hinged column is made of square steel, and its width is selected between 80-150mm according to the vertical load-bearing force requirements, and the wall thickness It can be selected within the range of 4mm-12mm according to the force requirements; the connecting end plate 32 is welded to both ends of the hollow steel pipe 31, and the four corners are provided with mounting holes, and the hinged column connecting end plate 32 is connected to the horizontal through beam 2 through a plurality of bolts 33. .

As shown in FIG. 4 and FIG. 5 , the anti-side unit 4 includes a pair of oblique stay rods arranged in an X-shape. The tie rod includes anchor head 41, tension member 42, tie rod main body 43 and connecting rib 44, tension member 412 and anchor head 413; Threaded steel bars are installed, and anchor heads are installed at both ends of the tie rod; the tension member 42 is made of flower basket bolts; during installation, the two tie rod bodies are placed at both ends of the turnbuckle bolts, and the other end of the tie rod body is connected with the connecting rib. After the installation is completed, the tension is realized by the turnbuckle bolts, and a pair of diagonal tie rods are arranged in an X-shaped staggered arrangement, and are connected to the hinged column or the hinged column and the concrete-filled steel tube side column arranged adjacent to the inner part of the structure.

As shown in Figure 5, connecting ribs are welded at both ends of the hinged column to be connected to the anti-side unit, and the connecting ribs are welded with the connecting end plates of the hinged column.

All components in the system can be prefabricated in the factory and assembled on the construction site. All components are detachably connected. The degree of assembly is high, which shortens the construction period and facilitates later structural adjustment. The setting of the cross-side anti-side unit realizes the separation of load-bearing and anti-side functions, the CFST side column and the hinged column are used for vertical load-bearing, and the X-shaped cross-side anti-side unit provides the main structural side-resistance; and the connection between the horizontal through beam and the CFST side column The nodes can be used as the functional reserve of the structure against the side; and in this embodiment, all the components are made of small-sized components and rigid tie rods that are common in the market, which can effectively reduce the construction cost and facilitate the transportation of components in villages, towns and remote areas.

The implementation of this scheme is carried out according to the following steps:

The first step is to prefabricate the components.

a. Prefabricated CFST side columns and horizontal through beams, select the type of square steel pipe, select the type of I-beam beam, and weld end plates and stiffening rib plates at both ends of the I-beam beam, and weld 2 at the position where the hinged column is set. for stiffeners;

b. Prefabricated hinged columns, select the type of hollow steel pipe, and weld connecting end plates at both ends of the hollow steel pipe;

c. Prefabricated anti-side units, arrange a pair of diagonal stay rods in an X-shape, and set anchor heads at each outer end of the diagonal stay rods, and connect the inside of the tie rods with flower basket bolts.

The second step is to transport the prefabricated parts to the construction site.

The third step is to vertically arrange the square steel pipes of each CFST side column, pour concrete into the square steel pipes and maintain them to the initial strength.

The fourth step is to hoist the horizontal through beams, set up temporary corbels on the CFST side columns corresponding to the installation positions of the horizontal through beams, detachably connect the horizontal through beams between the CFST side columns to form the main frame, and hoist the horizontal through beams on site After it is in place, it can be tightened with bolts and nuts.

The fifth step is to detachably connect the hinged column between the upper and lower horizontal through beams or between the horizontal through beam and the foundation; hoist the hinged column to a predetermined position, and connect the hinged column to the end plate and the horizontal through beam flange plate through multiple bolts Tighten the connection.

The sixth step is to connect the X-shaped cross-bracing anti-side units between the adjacent hinged columns in the inner part of the structure, or between the hinged columns and the concrete-filled steel tube side columns, using connecting rib plates and pin-type anchor heads, and pass The tensioning member is tensioned.

Step 7: After the construction of the overall steel structure skeleton is completed, prefabricated wall panels or light blocks can be used for wall filling at the residential wall position.

This preferred embodiment adopts the prefabricated construction method for installation, and the components are detachably connected, so the installation is quick and convenient, and the disassembly, maintenance and replacement are convenient, and the requirements for on-site construction are reduced, which is convenient for improving the construction quality. Has the following advantages:

1. The vertical load-bearing and the main horizontal anti-side system are separated through the setting of the X-shaped cross-side anti-side unit, in which the beam-column full-bolt joint and the anti-side unit provide double anti-side protection for the steel structure of the residence. In the normal use state and during small and medium earthquakes, the lateral and seismic capacity is mainly provided by the anti-side element. The CFST side column and the internal hinged column mainly bear vertical loads. Small section members can meet the requirements of the use of structural columns hidden in the wall while meeting the vertical load-bearing force requirements.

2. The anti-side unit is formed by cross-flexible inclined rods, which is the main source of anti-side of the village and town residential structure. Its structure is simple, the material selection is convenient, and it can provide greater anti-side stiffness without increasing too many structural members and steel consumption. and seismic performance. And the connection methods are all bolted connections, and the layout is flexible. The position of the support frame can be adjusted according to the needs under the condition of ensuring the overall stress of the structure, so as to flexibly adjust the internal layout of the house without changing the overall structure of the residential house.

3. Each connection node is bolted, which can realize full-assembly construction; the CFST side column and the horizontal through beam are connected by end plate bolts with stiffeners, which can provide a certain stiffness and bending resistance of the nodes as a whole structure. The reserve of anti-side performance is used as the second anti-seismic line of defense under the action of a large earthquake or after the hinged support frame is damaged.

Claims (7)

1. a low-level multi-storey steel structure housing system, is characterized in that: it comprises concrete-filled steel tubular side columns, hinged columns, horizontal through beams and X-shaped cross-resisting side units; Each CFST side column is arranged vertically, The horizontal through beams include side beams and middle beams, the side beams are detachably connected between two adjacent CFST side columns, and the middle beams are connected between adjacent two side beams; The hinged column is arranged vertically, and the two ends are respectively connected with the upper and lower horizontal through beams detachably; The X-shaped cross anti-side unit is detachably connected between adjacent hinged columns or between hinged columns and side columns. 2. The low-level multi-storey steel structure housing system as claimed in claim 1, characterized in that: the CFST side column adopts square steel pipe, the inside of the square steel pipe is filled with concrete, the CFST side column is pre-buried with high-strength bolts, and the steel pipe concrete The side pillars are arranged vertically through; the horizontal through beams are I-beam beams, and positioning holes are arranged on the upper and lower wing plates, and both ends of the I-beam beams are welded to connect end plates, which connect the end plates to the upper flange, The stiffening rib plates are welded between the lower flanges; the connecting end plates at the ends of the horizontal through beams and the concrete-filled steel tube side columns are connected by embedded high-strength bolts with nuts. 3. The low multi-storey steel structure housing system according to claim 2, wherein the hinged column comprises a hollow steel pipe and an end plate, and the end plates are welded on both ends of the square steel pipe column; the hinged column passes through the end plates at both ends respectively. Connected to the horizontal through beams on the upper and lower sides. 4 . The low multi-storey steel structure housing system according to claim 3 , wherein two pairs of stiffening rib plates are arranged between the upper and lower wing plates of the horizontal through beam at the position where the hinged column is arranged. 5 . 5. The low multi-storey steel structure residential system according to claim 3, wherein the X-shaped cross-resisting side unit is composed of a pair of X-shaped cross-arranged diagonal braces, and the diagonal braces include tension members and are connected to The main body of the tie rod at both ends of the tension member, and the outer end of the main body of the tie rod is provided with an anchor head. 6 . The low-storey steel structure housing system according to claim 5 , wherein the tension member is a turnbuckle bolt, and the main body of the tie rod is a steel strand or a rebar. 7 . 7. The low multi-storey steel structure housing system according to claim 5, characterized in that: the X-shaped cross-resisting side unit is connected with the hinged column or the concrete-filled steel tube side column through the connecting rib, and the connecting rib is provided with a connection The connecting rib is welded between the end plate and the hinged column, and the tie rod is connected with the connecting rib through a pin shaft with its anchor head.

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