Construction method of a modular steel frame structure system

Abstract

The application discloses a construction method of a modular steel frame structure system, and belongs to the field of construction methods of modular steel frame structure systems.The modular steel frame structure system comprises horizontally arranged horizontal frame beams, vertically arranged vertical frame columns connected to the intersection of the horizontal frame beams, and butt joint box assemblies connected to the connection position of the horizontal frame beams and the vertical frame columns.The butt joint box assemblies are arranged to facilitate the convenient butt joint of the horizontal beams and the vertical main body, and the pre-arrangement of the holes on the butt joint box assemblies and the corresponding plate fixed nuts facilitates the subsequent installation and fixation, thereby guaranteeing the construction of the frame structure system.The corresponding connecting plates of the horizontal frame beams and the vertical frame columns are arranged to facilitate the splicing and connection of each other and to guarantee the splicing and connection of the butt joint box assemblies.The column expansion connecting part is arranged to not only strengthen the strength of the connecting end of the column body but also facilitate the overall stress stability, thereby guaranteeing the reliability of the force transmission of the column body.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel structure, and particularly relates to a construction method of a modular steel frame structure system. BACKGROUND

[0002] In recent years, with the development of fabricated buildings and the need for higher comfort, more reasonable layout and more beautiful building appearance of temporary site housing, container type temporary site housing is constantly iterated and upgraded. Under the premise of retaining high industrialization degree, convenient transportation and disassembly, the performance of the interior system, the peripheral protection system and the mechanical and electrical equipment system is improved, gradually deriving more comfortable, more energy-saving and more beautiful modular buildings. Due to the characteristics of the whole modular building being produced in the factory and transported to the site for assembly, high precision is required at the connection joint, otherwise it cannot be connected by screws and can only be connected by welding. The cost of this is the inconvenience of disassembly for repeated use.

[0003] Currently, the joints of light steel structures are mostly welded, and the main structure is severely damaged after disassembly and cannot be reused, resulting in low resource turnover rate. Therefore, temporary buildings basically use bolt connections, and light steel structures connected by bolts are mainly solid-web beams and columns, which are heavy and not suitable for direct installation, requiring large equipment, greatly increasing labor and mechanical costs. A new type of dismountable, highly standardized and lightweight structure system can greatly promote the development of temporary buildings. SUMMARY

[0004] The present application provides a construction method of a modular steel frame structure system to solve the technical problems of convenient disassembly, repeated use, free space and fixed stress of the steel frame structure.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A construction method of a modular steel frame structure system, the modular steel frame structure system comprising a horizontal frame beam arranged in a cross shape horizontally, a vertical frame column connected to the intersection of the horizontal frame beam vertically and arranged vertically, and a docking box assembly connected to the connection between the horizontal frame beam and the vertical frame column;

[0007] The docking box assembly comprises a docking box vertical plate arranged in a rectangular shape, a docking box horizontal plate connected to the top and bottom of the docking box vertical plate, a docking box vertical connecting hole arranged on the docking box vertical plate, a docking box horizontal hole arranged on the docking box horizontal plate, a plate fixing nut arranged corresponding to the inner side of the docking box vertical connecting hole and the docking box horizontal hole, and a docking box bone connected to the inside of the docking box vertical plate;

[0008] The horizontal frame beam comprises a beam body, a beam connecting plate connected to both ends of the beam body, and a beam connecting screw rod detachably connected to the beam connecting plate;

[0009] The vertical frame column comprises a column body, a column enlarged connecting part arranged at both ends of the column body, a column connecting plate connected to the outer end of each column enlarged connecting part, and a column connecting screw rod arranged on the column connecting plate;

[0010] The plate fixing nut is detachably connected through the beam connecting screw rod and the column connecting screw rod corresponding to the horizontal frame beam and the vertical frame column respectively;

[0011] The construction method of the modular steel frame structure system is applied, and the specific steps are as follows.

[0012] Step one, according to the style and size of the horizontal frame beam and the vertical frame column in the frame structure, a three-dimensional model is established; the main structure is segmented according to the nodes in combination with the characteristics of the steel structure, and a docking box assembly is designed based on the connecting nodes of the horizontal frame beam and the vertical frame column;

[0013] Step two, according to the designed docking box assembly, first weld the docking box skeleton, and then weld the docking box vertical plate around the docking box skeleton, wherein two rows of docking box vertical connecting holes are arranged on each docking box vertical plate;

[0014] Step three, two rows of docking box vertical connecting holes are symmetrically arranged on both sides of the connecting part of the docking box skeleton and the docking box vertical plate, and a plate fixing nut is welded inside each docking box vertical connecting hole, wherein the plate fixing nut is arranged in two layers;

[0015] Step four, a docking box horizontal hole is arranged on the docking box horizontal plate, and two layers of plate fixing nuts are welded inside the docking box horizontal hole; wherein the docking box horizontal hole is arranged in four and distributed in a positive direction;

[0016] Step five, a horizontal frame beam in the shape of an I-beam is made, a beam connecting screw rod is arranged on the beam connecting plate at the end of the horizontal frame beam corresponding to the docking box vertical connecting hole, and a column connecting screw rod is arranged on the column connecting plate corresponding to the docking box horizontal hole;

[0017] Step six, the beam connecting screw rod and the column connecting screw rod are threadedly connected to the docking box vertical connecting hole and the docking box horizontal hole, thereby forming the connection at the connecting part of the horizontal frame beam and the vertical frame column, and further forming the frame system.

[0018] Further, the beam body is an I-beam, the beam connecting plate is connected to the end of the I-beam and between the upper plate and the lower plate; the beam connecting plate is pre-arranged with a hole for the beam connecting screw rod to pass through, and the width of the beam connecting plate is suitable for installation and disassembly;

[0019] The beam bodies between adjacent ones are detachably connected through the connecting screw rods on the adjacent beam connecting plates.

[0020] Further, the beam connecting screw rod is a screw nut at one end and a threaded rod at the other end, the threaded rod penetrates the beam connecting plate and then penetrates into the vertical connecting hole of the docking box and the plate fixing nut, and the fastening and loosening of the threaded rod are driven by rotating the screw nut;

[0021] Further, the column body is a rectangular column, and the two ends of the rectangular column are column enlarged connecting parts; the column enlarged connecting part comprises a column enlarged framework connected to the end of the rectangular column and a column enlarged bone plate connected to the outer side of the column enlarged framework.

[0022] Further, the horizontal cross section of the column enlarged framework is cross-shaped, and the vertical direction is trumpet-shaped and gradually increases from top to bottom; the column enlarged bone plate is a rectangular plate and is T-shaped with the branch of the column enlarged framework.

[0023] Further, the bottom of the column enlarged bone plate is connected with the column connecting plate, and the column connecting plate is distributed in a field shape with the column enlarged framework, and the column connecting screw rod is penetrated into the center of each unit cell of the field shape.

[0024] Further, the column body is longitudinally detachably connected by a screw rod, and the screw rod is connected to the adjacent column connecting plate.

[0025] Further, the docking box is in the shape of a rectangular parallelepiped, and the docking box is fixedly connected with a docking box bone inside; the horizontal direction of the docking box bone is cross-shaped and intersects with the vertical direction at a point.

[0026] Further, the docking box is provided with a sealing ring at the internal corner corresponding to the outer side end surface of the beam connecting plate and the column connecting plate, and the sealing ring is integrally connected with the gasket provided at the beam connecting screw rod or the column connecting screw rod.

[0027] Further, stress sensors and strain sensors are arranged at the beam connecting plate and the column connecting plate, and the overall stress of the system is monitored in real time through the changes of stress and strain, so that reinforcement and correction are performed.

[0028] The beneficial effects of the present application are embodied in:

[0029] 1) The docking box assembly is arranged, which is beneficial to the convenient docking of the horizontal beam body and the vertical main body, and the pre-arrangement of the holes on the docking box assembly and the corresponding plate fixing nuts is beneficial to the subsequent installation and fixation; thereby ensuring the construction of the frame structure system.

[0030] 2) The corresponding connecting plates of the horizontal frame beam and the vertical frame column are arranged, which is beneficial to the splicing connection of each other and also ensures the splicing connection with the docking box assembly.

[0031] 3) The column enlarged connecting part is arranged, which not only strengthens the strength of the connecting end of the column body but also is beneficial to the overall stress stability and ensures the reliability of the force transmission of the column body.

[0032] Additional features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. The principles described herein can be employed in all embodiments of the application as broadly described below. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a modular steel frame structure connecting node;

[0034] Figure 2 is a schematic diagram of a horizontal frame beam three-dimensional structure;

[0035] Figure 3 is a schematic diagram of a vertical frame column three-dimensional structure;

[0036] Figure 4 is a schematic diagram of a docking box assembly three-dimensional structure;

[0037] Figure 5 is a vertical cross-sectional view of a modular steel frame structure;

[0038] Figure 6 is a horizontal cross-sectional view of a modular steel frame structure;

[0039] Figure 7 is a horizontal cross-sectional view of a column expansion connecting part structure.

[0040] Reference signs: 1-horizontal frame beam, 11-beam body, 12-beam connecting plate, 13-beam connecting screw, 2-vertical frame column, 21-column body, 22-column expansion connecting part, 221-column expansion skeleton, 222-column expansion skeleton plate, 23-column connecting plate, 24-column connecting screw, 3-docking box assembly, 31-docking box vertical plate, 32-docking box vertical connecting hole, 33-docking box horizontal plate, 34-docking box horizontal hole, 35-docking box skeleton, 36-plate fixing nut. DETAILED DESCRIPTION

[0041] Taking a certain frame structure as an example, a 3-layer steel frame unit with a column spacing of 6m x 6m and a layer height of 3m is selected. As shown in Figures 1 to 7 the modular steel frame structure system comprises a horizontal frame beam 1 arranged in a cross shape, a vertical frame column 2 vertically arranged at the intersection of the horizontal frame beam 1, and a docking box assembly 3 connected to the connection between the horizontal frame beam 1 and the vertical frame column 2.

[0042] In this embodiment, the docking box assembly 3 comprises a docking box vertical plate 31 arranged in a rectangular shape, a docking box horizontal plate 33 connected to the top and bottom of the docking box vertical plate 31, a docking box vertical connecting hole 32 arranged on the docking box vertical plate 31, a docking box horizontal hole 34 arranged on the docking box horizontal plate 33, a plate fixing nut 36 arranged inside the docking box vertical connecting hole 32 and the docking box horizontal hole 34, and a docking box bone 35 connected to the inside of the docking box vertical plate 31. The docking box is in the shape of a rectangular parallelepiped, and the docking box bone 35 is fixedly connected inside the docking box. The horizontal cross section of the docking box bone 35 is in the shape of a cross, and the vertical cross section is also in the shape of a cross intersecting at a point. The docking box is provided with a sealing ring at the female corner corresponding to the connection of the beam connecting plate 12 and the column connecting plate 23 on the outer side end surface, and the sealing ring is integrally connected with the gasket arranged at the beam connecting screw 13 or the column connecting screw 24.

[0043] In this embodiment, the docking box vertical plate 31 and the docking box horizontal plate 33 are made of a steel plate with a size of 240mmx240mmx300mm, and the peripheral and upper and lower cover plates have a wall thickness of 20mm.

[0044] In this embodiment, the horizontal frame beam 1 comprises a beam body 11, a beam connecting plate 12 connected to both ends of the beam body 11, and a beam connecting screw 13 detachably connected to the beam connecting plate 12. The beam body 11 is in the shape of an I-beam, and the beam connecting plate 12 is connected to the end of the I-beam and between the upper plate and the lower plate. The beam connecting plate 12 is pre-drilled with a hole for the beam connecting screw to pass through, and the width of the beam connecting plate 12 is suitable for installation and disassembly. The beam bodies 11 adjacent to each other are detachably connected by the connecting screws on the adjacent beam connecting plates 12. The beam connecting screw 13 has a nut at one end and a threaded rod at the other end. The threaded rod passes through the beam connecting plate 12 and then passes into the docking box vertical connecting hole 32 and the plate fixing nut 36, and the nut is tightened and loosened by rotating the threaded rod.

[0045] In this embodiment, the beam body 11 is an I-beam or an H-beam, and a 20mm thick beam connecting plate 12 is welded near the node. Holes for high-strength bolt pairs are pre-drilled on one side near the node.

[0046] In this embodiment, the vertical frame column 2 includes a column body 21, column expansion connectors 22 disposed at both ends of the column body 21, column connecting plates 23 connected to the outer ends of each column expansion connector 22, and column connecting screws 24 disposed on the column connecting plates 23. The column body 21 is a rectangular column, with column expansion connectors 22 at both ends. The column expansion connectors 22 include column expansion skeletons 221 connected to the ends of the rectangular column and column expansion bone plates 222 connected to the outer side of the column expansion skeletons 221. The column expansion skeletons 221 have a cross-shaped horizontal cross section and are arranged in a trumpet shape from top to bottom vertically. The column expansion bone plates 222 are rectangular plates and are T-shaped branches of the column expansion skeletons 221. The bottom of the column expansion bone plates 222 is connected to the column connecting plates 23. The column connecting plates 23 and the column expansion skeletons 221 are distributed in a grid pattern, and the column connecting screws 24 are connected at the center of each grid cell. The column body 21 is longitudinally connected by screws that can be detachably assembled. The screws are connected to the adjacent column connecting plate 23.

[0047] In this embodiment, the column expansion connector 22 is composed of two variable cross-section I-beams with a wall thickness of 20mm. The external dimensions of the cross-section are 200mm x 200mm at the upper end and 240mm x 240mm at the lower end, with an I-beam flange width of 80mm and a thickness of 20mm. Steel plates with a wall thickness of 20mm are welded to the upper and lower ends of the combined I-beams, and holes for high-strength bolt pairs are pre-drilled near the node. The column body 21 is made of square steel tubing. At the connection position in the core area of ​​the node, a column connector can be used to connect it to the docking box assembly 3 via high-strength large hexagonal bolt pairs. The plate fastening nut 36 is detachably connected to the horizontal frame beam 1 and the vertical frame column 2 via beam connecting bolt 13 and column connecting bolt 24, respectively.

[0048] like Figures 1 to 7 As shown, the construction method for applying the modular steel frame structure system is further explained, and the specific steps are as follows;

[0049] Step 1: Based on the style and dimensions of the horizontal frame beam 1 and the vertical frame column 2 in the frame structure, establish a three-dimensional model; combine the characteristics of the steel structure to divide the main structure into segments according to the nodes, and design the docking box assembly 3 based on the connection nodes of the horizontal frame beam 1 and the vertical frame column 2.

[0050] Step 2: According to the designed docking box assembly 3, first weld the docking box frame 35, and then weld the docking box vertical plates 31 around the docking box frame 35. Each docking box vertical plate 31 is provided with two rows of docking box vertical connection holes 32.

[0051] Step 3: Two rows of vertical connecting holes 32 are symmetrically arranged on both sides of the connection between the docking box frame 35 and the docking box vertical plate 31. Plate fixing nuts 36 are welded inside each vertical connecting hole 32, wherein the plate fixing nuts 36 are arranged in two layers.

[0052] Step four, set the docking box horizontal hole 34 on the docking box horizontal plate 33, and weld two layers of plate fixing nuts 36 inside the docking box horizontal hole 34; wherein the docking box horizontal hole 34 is provided with four and is distributed in a positive direction.

[0053] Step five, make the horizontal frame beam 1 in the shape of a capital letter, set the beam connecting screw 13 on the beam connecting plate 12 at the end of the horizontal frame beam 1 corresponding to the docking box vertical connecting hole 32; set the column connecting screw 24 on the column connecting plate 23 corresponding to the docking box horizontal hole 34.

[0054] Step six, threadedly connect the beam connecting screw 13 and the column connecting screw 24 to the docking box vertical connecting hole 32 and the docking box horizontal hole 34, thereby forming the connection at the connection between the horizontal frame beam 1 and the vertical frame column 2, and further forming the frame system.

[0055] In addition, stress sensors and strain sensors are arranged at the beam connecting plate 12 and the column connecting plate 23, and the overall stress of the system is monitored in real time through the changes of stress and strain, so as to reinforce and correct.

[0056] For the detachable steel frame system, the connecting box is used in the core area of the beam-column connection joint, the steel plate is welded around the connecting box, and the cross stiffening rib plate is built-in, which can form a strong force component to bear the bending moment and shear force transmitted at the joint. The connecting box reserves the bolt hole required for calculation, forming an independent component. Through the pre-buried nut, the subsequent installation of the beam-column component can be facilitated, thereby avoiding the welding damage to the main component at the beam-column joint.

[0057] After the lower column is installed in place, the connecting box is placed on the connecting piece of the lower column, the high-strength bolt is used to connect the nut reserved in the connecting box with the end plate of the lower column connecting piece, so that the lower column and the connecting box become an integral whole. Then, the corresponding beam at the joint is placed on both sides of the connecting box, and after correction, the high-strength bolt is used to connect the nut reserved in the connecting box with the end plate of the beam, thereby forming a new joint. Finally, the column connecting piece of the upper column is placed on the end plate of the connecting box, and the high-strength bolt is used to connect the nut reserved in the connecting box with the end plate of the upper column connecting piece, thereby completing the installation of the entire joint core area.

[0058] The square steel pipe column is connected to the connecting box through a specific connecting piece near the joint area. The upper and lower columns can be connected as a whole through the through steel plate and high-strength bolt, thereby achieving the effect of common stress of the two columns, which is of great benefit to improving the stiffness of the column and the integrity of the structure.

[0059] This structure is easy to install, and only high-strength bolts are needed on site to complete the connection of the beam-column main component 21 and form the joint area. After the joint core area is damaged, it can be removed and replaced conveniently. Only the current connecting box needs to be replaced, which does not affect the components at other positions of the structure.

[0060] The above description is only preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any changes or substitutions thought by those skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application.

Claims

1. A construction method of a modular steel framed structural system, characterized by, The modular steel frame structure system comprises horizontal frame beams (1) arranged in a cross shape, vertical frame columns (2) vertically arranged at the intersection of the horizontal frame beams (1), and butt joint box assemblies (3) connected to the connection part of the horizontal frame beams (1) and the vertical frame columns (2); The butt joint box assembly (3) comprises a butt joint box vertical plate (31) arranged in a rectangular shape, butt joint box horizontal plates (33) connected to the top and bottom of the butt joint box vertical plate (31), butt joint box vertical connecting holes (32) arranged on the butt joint box vertical plate (31), butt joint box horizontal holes (34) arranged on the butt joint box horizontal plates (33), plate fixing nuts (36) arranged on the inner side of the butt joint box vertical connecting holes (32) and the butt joint box horizontal holes (34), and a butt joint box bone (35) connected to the inside of the butt joint box vertical plate (31); The horizontal frame beam (1) comprises a beam main body (11), beam connecting plates (12) connected to both ends of the beam main body (11), and beam connecting screws (13) detachably connected to the beam connecting plates (12); The vertical frame column (2) comprises a column main body (21), column enlarged connecting parts (22) arranged at both ends of the column main body (21), column connecting plates (23) connected to the outer end of each column enlarged connecting part (22), and column connecting screws (24) arranged on the column connecting plates (23); The column main body (21) is a rectangular column, and the two ends of the rectangular column are the column enlarged connecting parts (22); the column enlarged connecting part (22) comprises a column enlarged framework (221) connected to the end of the rectangular column and a column enlarged bone plate (222) connected to the outer side of the column enlarged framework (221); The butt joint box assembly (3) is in the shape of a rectangular parallelepiped, and the butt joint box bone (35) is fixedly connected inside the butt joint box assembly (3); the butt joint box bone (35) is in the shape of a cross horizontally and in the shape of a cross vertically intersecting at a point; The plate fixing nuts (36) are detachably connected through the beam connecting screws (13) and the column connecting screws (24) corresponding to the horizontal frame beams (1) and the vertical frame columns (2), respectively; The construction method of the modular steel frame structure system comprises the following steps: Step one: according to the style and size of the horizontal frame beams (1) and the vertical frame columns (2) in the frame structure, a three-dimensional model is established; the main structure is segmented according to the nodes based on the characteristics of the steel structure, and the butt joint box assembly (3) is designed based on the connection nodes of the horizontal frame beams (1) and the vertical frame columns (2); Step two: according to the designed butt joint box assembly (3), the butt joint box bone (35) is welded first, and then the butt joint box vertical plate (31) is welded around the butt joint box bone (35); two rows of butt joint box vertical connecting holes (32) are arranged on each butt joint box vertical plate (31); Step three: two rows of butt joint box vertical connecting holes (32) are symmetrically arranged at the connection part of the butt joint box bone (35) and the butt joint box vertical plate (31) on both sides, and plate fixing nuts (36) are welded on the inner side of each butt joint box vertical connecting hole (32); the plate fixing nuts (36) are arranged in two layers. Step 4: Set horizontal holes (34) on the horizontal plate (33) of the docking box, and weld two layers of plate fastening nuts (36) inside the horizontal holes (34); four horizontal holes (34) are set and distributed in the positive direction. Step 5: Make an I-shaped horizontal frame beam (1), and set a beam connecting bolt (13) on the beam connecting plate (12) at the end of the horizontal frame beam (1) corresponding to the vertical connecting hole (32) of the docking box; set a column connecting bolt (24) on the column connecting plate (23) corresponding to the horizontal hole (34) of the docking box. Step 6: Connect the beam connecting bolt (13) and the column connecting bolt (24) to the vertical connecting hole (32) and the horizontal connecting hole (34) of the docking box, thereby forming the connection between the horizontal frame beam (1) and the vertical frame column (2), and thus forming the frame system.

2. The construction method of a modular steel framed structural system as claimed in claim 1, wherein, The main beam (11) is an I-shaped component, and the beam connecting plate (12) is connected to the end of the I-shaped component and between the upper and lower plates; the beam connecting plate (12) has a hole for the beam connecting bolt to pass through, and the width of the beam connecting plate (12) is suitable for installation and disassembly. The main beams (11) between adjacent beams can be detachably spliced ​​together by connecting bolts on the connecting plates (12) of adjacent beams.

3. The construction method of a modular steel framed structural system as claimed in claim 2, wherein, The beam connecting screw (13) has a nut at one end and a threaded rod at the other end. The threaded rod passes through the beam connecting plate (12) and then through the vertical connecting hole (32) of the docking box and the plate fixing nut (36). The threaded rod is tightened and loosened by rotating the nut.

4. The construction method of a modular steel framed structural system as claimed in claim 1, wherein, The column enlargement frame (221) has a cross-shaped horizontal section and a trumpet-shaped vertical section that gradually increases in size from top to bottom; the column enlargement plate (222) is a rectangular plate and is T-shaped with the branches of the column enlargement frame (221).

5. The construction method of a modular steel framed structural system as claimed in claim 4, wherein, The bottom of the column expansion bone plate (222) is connected to the column connecting plate (23). The column connecting plate (23) and the column expansion skeleton (221) are distributed in a grid pattern, and the column connecting screw (24) is connected at the center of each grid cell.

6. The construction method of a modular steel framed structural system as claimed in claim 5, wherein, The column body (21) is detachably assembled and connected by screws along its length, and the screws are connected to the adjacent column connecting plate (23).

7. The construction method of a modular steel framed structural system as claimed in claim 1, wherein, Each outer side of the docking box assembly (3) is provided with a sealing ring at the inner corner where the outer end face of the beam connecting plate (12) and column connecting plate (23) are connected, and the sealing ring is integrally connected with the gasket provided at the beam connecting screw (13) or column connecting screw (24).

8. The construction method of a modular steel framed structural system as claimed in claim 1, wherein, Stress sensors and strain sensors are installed at the beam connecting plate (12) and column connecting plate (23) to monitor the overall stress of the system in real time through changes in stress and strain, thereby strengthening and correcting it.

Images