A steel structure residential system and a construction method for steel skeleton beams

Abstract

The present invention discloses a steel structure residential system and a construction method for steel skeleton beams, which includes an external frame and an internal frame. The external frame includes column 1, column 2 and steel skeleton beams. The steel skeleton beams include section steel 1, a concrete structure and a steel bar part. Section steel 1 and the steel bar part are arranged in the concrete structure. In the present invention, the steel beams of the external frame are wrapped with concrete, and at the same time, a steel bar part is arranged in the concrete. The steel bar part mainly bears tensile stress in the concrete. At the same time, the steel bar part and the concrete have a large bonding ability, which can better bear the action of external forces. At the same time, the concrete plays a role in protecting the steel bar part and the steel beam, avoiding the corrosion of the steel bar part and the steel beam, giving full play to the connection function of the steel beam, and improving the mechanical properties of the steel structure residential system. The thickness of the steel skeleton beam is increased, so that column 1 and column 2 do not protrude from the steel skeleton beam. When the wall is connected to the steel skeleton beam, cracks and water leakage are not likely to occur at the interface between the wall and the steel skeleton beam, and at the same time, it has a fire prevention function.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel structures, and particularly relates to a steel structure residential system and a construction method for steel-concrete composite beams. Background Art

[0002] Currently, the existing steel structure residential systems mainly include traditional steel frame systems and frame-shear wall systems. The prior art discloses a patent for an invention named "Steel Structure Residential System with Dense Column Outer Frame and Sparse Column Grid Composite Floor Slab" (Application No.: 201410119882.3) on March 27, 2014, which improves the flexibility of the spatial layout of residential buildings; saves more steel consumption compared with traditional steel frame structures; and simplifies the floor construction process by using precast slabs as the bottom formwork of the floor slab, eliminating the scaffolding project and formwork manufacturing process.

[0003] However, in the existing steel structure residential systems, steel beams are used in the external frame. When the wall is an ordinary block wall, cracks and water leakage are likely to occur at the interface between the ordinary block wall and the steel beam, and the steel beam is easily corroded, and the structural mechanical properties are average. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems existing in the prior art, and provide a steel structure residential system and a construction method for steel-concrete composite beams. In the steel structure residential system, the steel beam of the external frame is wrapped with concrete, and steel bars are arranged in the concrete. The steel bars mainly bear tensile stress in the concrete, and there is a large bonding ability between the steel bars and the concrete, which can better bear the action of external forces. At the same time, the concrete plays a protective role for the steel bars and the steel beam, avoiding corrosion of the steel bars and the steel beam, giving full play to the connection role of the steel beam, and improving the mechanical properties of the steel structure residential system. Moreover, when the wall is connected to the steel-concrete composite beam, the interface between the wall and the steel-concrete composite beam is fixed with mortar, and cracks and water leakage are not likely to occur.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A steel structure residential system, including an external frame and an internal frame, with the internal frame installed on the external frame, is characterized in that: the external frame includes column one, column two and steel beam. Column one is arranged at the four corners of the external frame, column two is arranged between two adjacent column ones, the steel beam is arranged between column one and column two, and the remaining steel beams are arranged between two adjacent column twos. The internal frame is installed on column two. Among them, the steel beam includes section steel one, concrete structure and steel bar part, and section steel one and the steel bar part are arranged in the concrete structure. In the steel structure residential system, the steel beam of the external frame is wrapped with concrete, and at the same time, the steel bar part is arranged in the concrete. The steel bar part mainly bears tensile stress in the concrete. At the same time, the steel bar part and the concrete have a large bonding ability, which can better bear the action of external forces. At the same time, the concrete plays a role in protecting the steel bar part and the steel beam, avoiding the corrosion of the steel bar part and the steel beam, giving full play to the connection role of the steel beam, and improving the mechanical properties of the steel structure residential system. Moreover, when the wall is connected to the steel beam, the interface between the wall and the steel beam is fixed with mortar, and cracks and water leakage are not likely to occur.

[0007] Furthermore, the steel bar part includes stress-bearing steel bars and stirrups. The stress-bearing steel bars are arranged horizontally, and the stirrups surround and fix the stress-bearing steel bars to form a steel bar skeleton. The stirrups meet the shear strength within the cross-section and play the role of bearing the load of the stress-bearing steel bars and the concrete structure.

[0008] Furthermore, connecting plates are fixed to both column one and column two, and the stress-bearing steel bars are fixedly connected to the connecting plates, increasing the contact area between the column and the stress-bearing steel bars and enhancing the firmness of the installation of the stress-bearing steel bars.

[0009] Furthermore, the concrete structure is divided into concrete section one and concrete section two. Concrete section one is formed in the factory, which is convenient for controlling the forming quality of concrete section one. Concrete section two is formed on the construction site, reducing the length of concrete that needs to be formed on the construction site, lowering the construction difficulty and improving the on-site construction speed.

[0010] Furthermore, column one adopts an L shape and is used for connecting between two steel beams at the corner.

[0011] Furthermore, the internal frame includes section steel two and column three, and section steel two is fixed between column three and column two. The internal frame is directly fixed by section steel two and column three, with a simple structure and convenient construction.

[0012] Furthermore, stiffening plates are fixed in the cavities of column one, column two and column three, increasing the strength of the columns.

[0013] Furthermore, a corrugated steel plate wall is provided between two adjacent Column 3s. The corrugated steel plate wall includes Section Steel 3 and corrugated steel plates. Section Steel 3 is installed on Column 3, and the corrugated steel plates are fixed to Section Steel 3. Both Section Steel 3 and the corrugated steel plates are fixed to Section Steel 2, improving the lateral stiffness of the structure. Fireproof coatings are applied to both sides of the corrugated steel plate wall, which not only solves the fireproof problem but also solves the problem of wall finishing.

[0014] Furthermore, a batten is fixed between Section Steel 3 and Column 3, which not only plays a fireproof role but also serves as a filler wall.

[0015] A construction method for a steel beam in a steel structure residential system, characterized by comprising the following steps:

[0016] a. Assembling the formwork:

[0017] (1) Fix a second formwork between the bottoms of two parallel first formworks. The first formwork is provided with a notch.

[0018] (2) Install two third formworks between the two first formworks. The third formwork and the second formwork are fixed by Bolt 1, so that the first formwork, the second formwork, and the third formwork form an inner cavity. The third formwork is provided with a first limiting hole, and the shape of the first limiting hole is designed according to the shape of Section Steel 1. At the same time, the third formwork is provided with a second limiting hole, and the shape of the second limiting hole is designed according to the shape of the stress-bearing steel bars.

[0019] b. Pass Section Steel 1 through the first limiting holes of the two third formworks and center Section Steel 1 between the two third formworks. At this time, Section Steel 1 extends into the inner cavity.

[0020] c. Pass the stress-bearing steel bars through the second limiting holes of the third formwork. At this time, the stress-bearing steel bars extend into the inner cavity.

[0021] d. Install the outer plate 1: The outer plate 1 is provided with a first connecting part, and the first formwork is provided with a second connecting part. Pass a Bolt 2 between the first connecting part and the second connecting part, then screw a first nut onto the Bolt 2 and tighten the first nut, so that the outer plate 1 and the first formwork are detachably connected.

[0022] e. Install the outer plate 2: The outer plate 1 is provided with a third connecting part, and the outer plate 2 is provided with a fourth connecting part. Pass a Bolt 3 between the third connecting part and the fourth connecting part, then screw a second nut onto the Bolt 3 and tighten the second nut, so that the outer plate 1 and the outer plate 2 are detachably connected.

[0023] f. Install the steel bar support structure: The outer plate 2 is provided with an installation hole. The steel bar support structure includes a support rod and a locking member. Pass the support rod through the installation hole, then screw the locking member onto the support rod. Then move the support rod vertically in the installation hole. When the support rod supports the stress-bearing steel bars, tighten the locking member on the outer plate 2, so that the length of the stress-bearing steel bars extending out of the third formwork is relatively large.

[0024] g. Install the third peripheral plate: The third peripheral plate is provided with a third limiting hole and a fourth limiting hole. Screw in the fourth bolt between the second peripheral plate and the third peripheral plate so that the first peripheral plate, the second peripheral plate, and the third peripheral plate are fixed into an integral structure. At this time, the end of the first profiled steel passes through the third limiting hole, and the third limiting hole supports the first profiled steel. The stressed steel bars pass through the fourth limiting hole, and the fourth limiting hole supports the stressed steel bars. The connection between the second peripheral plate and the third peripheral plate is detachable. The third peripheral plate, the second peripheral plate, and the first peripheral plate are connected into an integral structure, which has good load-bearing capacity. The purpose is to support the parts of the first profiled steel and the stressed steel bars extending out of the third formwork. When injecting concrete into the middle part of the first profiled steel, it plays a role in supporting and protecting the parts of the first profiled steel and the stressed steel bars extending out of the third formwork, avoiding damage to its structure.

[0025] h. Fix and connect the third peripheral plate and the first profiled steel with a fixing steel plate: The fixing steel plate is in an L shape and is provided with a first through hole. Then weld a third nut on the fixing steel plate, and the third nut is arranged corresponding to the first through hole. Next, insert the fixing steel plate into the third limiting hole and press the fixing steel plate against the web of the first profiled steel. At this time, the second through hole provided on the web corresponds to the first through hole. Then insert a fifth bolt into the first through hole and the second through hole, and screw the fifth bolt into the third nut. Then screw in a sixth bolt between the fixing steel plate and the third peripheral plate. The fixing steel plate is detachably connected between the first profiled steel and the third peripheral plate. Through the fixing steel plate, the connection between the first profiled steel and the third peripheral plate can be fixed. When injecting concrete into the middle part of the first profiled steel, the force exerted on the first profiled steel is transmitted to the third peripheral plate, and the integral structure formed by the third peripheral plate, the second peripheral plate, and the first peripheral plate is stably supported on the ground, avoiding the displacement of the position of the first profiled steel, so that the subsequent formed concrete section one can be centered on the first profiled steel, improving the forming quality of the first profiled steel and the concrete section one in the factory.

[0026] i. Preliminary forming of concrete: Inject concrete into the inner cavity through the notch of the first formwork, and the height of the injected concrete does not exceed the bottom surface of the notch.

[0027] j. Integrally form the concrete to form the first concrete section: Install a baffle in the notch of the first formwork, then inject concrete into the inner cavity, and then insert lifting lugs into the concrete. When the concrete is integrally formed, the first concrete section is formed, and the stressed steel bars penetrate into the first concrete section.

[0028] If concrete is directly injected into the inner cavity, the upper flange of the first section of profiled steel bars has a certain blocking effect on the concrete, resulting in poor fluidity of the concrete in the cavity and affecting the forming speed of the first concrete section. Therefore, the concrete is injected into the first concrete section in layers. For the first time, concrete is injected into the inner cavity through the notch of the first formwork, and the injection point is below the upper flange of the first section of profiled steel bars. At this time, the concrete has good fluidity. For the second time, concrete is directly injected into the inner cavity. Although the upper flange of the first section of profiled steel bars has a certain blocking effect on the concrete, the height of the injected concrete is small. When the concrete exceeds the upper flange of the first section of profiled steel bars, it is no longer affected by the upper flange of the first section of profiled steel bars, thus improving the forming speed of the first concrete section.

[0029] k. Remove the first outer plate, then remove the fixed steel plate, then remove the second outer plate, then move out the third outer plate, then remove the third formwork, and then remove the first formwork and the second formwork of the overall structure.

[0030] l. According to the quantity and position of the stirrups designed in the construction drawings, weld and fix the stirrups and the stress-bearing steel bars so that the first concrete section, the steel bar part and the first section of profiled steel bars form an integral structure.

[0031] m. By hoisting with the lifting lugs, lift the integral structure formed by the first concrete section, the steel bar part and the first section of profiled steel bars and place it between the first column and the second column, and fix the first section of profiled steel bars between the first column and the second column. Then lift the remaining integral structures formed by the first concrete section, the steel bar part and the first section of profiled steel bars and place them between two adjacent second columns, and fix the first section of profiled steel bars between two adjacent second columns. Then weld connection plates to both the first column and the second column, and then weld and fix the stress-bearing steel bars and the connection plates. Then cut off the lifting lugs.

[0032] n. Set U-shaped plates in the areas between Concrete Section 1 and Column 1, and also in the areas between Concrete Section 1 and Column 2. The U-shaped plates are supported on the ground at the construction site by steel pipes. Then, pour concrete into the grooves of the U-shaped plates to form Concrete Section 2, so that Concrete Section 1, the steel bar part, Section Steel 1, and Concrete Section 2 form a steel reinforced beam. Remove the steel pipes and U-shaped plates. At the construction site, Section Steel 1 can be directly fixedly connected to the column, either by bolts or by direct welding, so that the steel reinforced beam can be connected to the column, providing sufficient operating space. Since the length of the Concrete Section 2 to be formed is short, the U-shaped plate is directly used as a formwork and supported on the ground by steel pipes. The number and size of the steel pipes can be adjusted according to the construction requirements. The Concrete Section 2 is formed quickly. The Concrete Section 2 and Concrete Section 1 form an integral concrete structure. The Section Steel 1 and the steel bar part are wrapped with concrete. The steel bar part mainly bears tensile stress in the concrete. The steel bar part and the concrete have a large bonding capacity, which can better bear the action of external forces. At the same time, the concrete plays a protective role for the steel bar part and the steel beam, preventing the steel bar part and the steel beam from being corroded, giving full play to the connection function of the steel beam, and improving the mechanical properties of the steel structure residential system.

[0033] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects:

[0034] 1. In the steel structure residential system, the steel beams of the external frame are wrapped with concrete, and steel bar parts are arranged in the concrete. The steel bar parts mainly bear tensile stress in the concrete. At the same time, the steel bar parts and the concrete have a large bonding capacity, which can better bear the action of external forces. At the same time, the concrete plays a protective role for the steel bar parts and the steel beams, preventing the steel bar parts and the steel beams from being corroded, giving full play to the connection function of the steel beams, and improving the mechanical properties of the steel structure residential system. Moreover, when the wall is connected to the steel reinforced beam, the interface between the wall and the steel reinforced beam is fixed with mortar, and cracks and water leakage are not likely to occur.

[0035] 2. If the present invention uses spliced formworks to wrap around Section Steel 1 and pour concrete, the protruding parts of the stressed steel bars will be damaged, and Section Steel 1 will shift on the formwork, resulting in Concrete 1 not being centered on Section Steel 1. To solve this technical problem, the present invention connects Outer Plate 3, Outer Plate 2, and Outer Plate 1 into an integral structure, which has good load-bearing capacity. The purpose is to support Section Steel 1 and the parts of the stressed steel bars protruding from the third formwork. When pouring concrete into the middle part of Section Steel 1, it plays a supporting and protective role for Section Steel 1 and the parts of the stressed steel bars protruding from the third formwork, preventing their structures from being damaged.

[0036] In the present invention, the steel section one and the outer plate three can be fixedly connected through a fixing steel plate. When injecting concrete into the middle part of the steel section one, the acting force received by the steel section one is transmitted to the outer plate three, and the overall structure formed by connecting the outer plate three, the outer plate two, and the outer plate one is stably supported on the ground, preventing the position of the steel section one from shifting, so that the subsequently formed concrete section one can be centered on the steel section one, improving the forming quality of the steel section one and the concrete section one in the factory.

[0037] In the present invention, a support rod is used to support the stressed steel bars, enabling the stressed steel bars to extend a greater length beyond the third formwork while avoiding partial damage to the horizontal steel bars. Moreover, when the concrete section one is being formed, considering that the stressed steel bars have sufficient supporting effects, the stressed steel bars can be horizontally pulled to adjust the length of the stressed steel bars extending into the concrete section one to meet the construction requirements.

[0038] The concrete structure of the present invention is divided into a concrete section one and a concrete section two. The concrete section one is formed in the factory, facilitating the control of the forming quality of the concrete section one. The concrete section two is formed at the construction site, reducing the length of the concrete that needs to be formed at the construction site, lowering the construction difficulty, and improving the on-site construction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described below with reference to the accompanying drawings:

[0040] Figure 1 is a schematic structural diagram of a steel structure residential system in the present invention;

[0041] Figure 2 is a schematic structural diagram of the present invention in which no concrete section two is provided in one of the steel girders;

[0042] Figure 3 is Figure 2 an enlarged schematic structural diagram of the C position in

[0043] Figure 4 is a schematic structural diagram of the corrugated steel plate wall in the present invention;

[0044] Figure 5 is a schematic structural diagram of the present invention when it is fixed between the first formwork and the second formwork;

[0045] Figure 6 is a schematic structural diagram of the present invention when the third formwork is being fixed;

[0046] Figure 7 is a schematic structural diagram of the third formwork in the present invention;

[0047] Figure 8 is a schematic structural diagram of the present invention when the steel section one passes through the limit hole one of the two third formworks;

[0048] Figure 9 This is a schematic structural diagram of the present invention when the stressed steel bars pass through the second limit hole of the third template;

[0049] Figure 10 This is a schematic structural diagram of the present invention when the first peripheral plate is installed;

[0050] Figure 11 This is a schematic structural diagram of the present invention when the steel bar support structure is installed;

[0051] Figure 12 This is a schematic structural diagram of the first peripheral plate in the present invention;

[0052] Figure 13 This is a schematic structural diagram of the second peripheral plate in the present invention;

[0053] Figure 14 This is a schematic structural diagram of the steel bar support structure in the present invention;

[0054] Figure 15 This is a schematic structural diagram of the present invention when the third peripheral plate is installed;

[0055] Figure 16 This is a schematic structural diagram of the present invention when the third peripheral plate and the first section of steel are fixedly connected by using a fixing steel plate;

[0056] Figure 17 This is a schematic structural diagram of the third peripheral plate in the present invention;

[0057] Figure 18 This is a schematic structural diagram of the fixing steel plate in the present invention;

[0058] Figure 19 This is a schematic structural diagram of the present invention when the first concrete section is formed;

[0059] Figure 20 This is a schematic structural diagram of the present invention when the first concrete section, the steel bar part and the first section of steel form an integral structure;

[0060] Figure 21 This is a schematic structural diagram of the present invention when a U-shaped plate is arranged in the area between the first concrete section and the first column.

[0061] In the figure, 1 - Column 1; 2 - Column 2; 3 - Steel skeleton beam; 4 - Section steel 1; 5 - Stress - bearing steel bars; 6 - Stirrups; 7 - Connection plate; 8 - Concrete section 1; 9 - Section steel 2; 10 - Column 3; 11 - Corrugated steel plate wall; 12 - Reinforcing plate; 13 - Corrugated steel plate; 14 - Section steel 3; 15 - Strip board; 16 - First formwork; 17 - Second formwork; 18 - Notch; 19 - Third formwork; 20 - Inner cavity; 21 - Limit hole 1; 22 - Limit hole 2; 23 - Outer plate 1; 24 - Outer plate 2; 25 - Support rod; 26 - Locking piece; 27 - Stiffening rib; 28 - Installation hole; 29 - Outer plate 3; 30 - Limit hole 3; 31 - Fixed steel plate; 32 - Nut 3; 33 - Baffle; 34 - Lifting lug; 35 - Steel pipe; 36 - U - shaped plate; 37 - Limit hole 4; A - External frame; B - Internal frame. Specific implementation manner

[0062] As Figures 1 to 21 shown, a steel - structure residential system of the present invention includes an external frame A and an internal frame B, and the internal frame B is installed on the external frame A.

[0063] The external frame A includes Column 1 (1), Column 2 (2) and steel skeleton beams (3). Column 1 (1) is arranged at the four corners of the external frame A. Column 1 (1) is in an L - shape and is used for connecting two steel skeleton beams (3) at the corner. Column 2 (2) is arranged between two adjacent Column 1 (1). The steel skeleton beams (3) are arranged between Column 1 (1) and Column 2 (2), and the remaining steel skeleton beams (3) are arranged between two adjacent Column 2 (2). The internal frame B is installed on Column 2 (2). Among them, the steel skeleton beam (3) includes section steel 1 (4), a concrete structure and a steel - bar part. The section steel 1 (4) and the steel - bar part are arranged in the concrete structure, and the section steel 1 (4) is an H - shaped steel. In the steel - structure residential system, the steel beams of the external frame A are wrapped with concrete, and at the same time, a steel - bar part is arranged in the concrete. The steel - bar part mainly bears tensile stress in the concrete. At the same time, the steel - bar part and the concrete have a large bonding ability, which can better bear the action of external forces. At the same time, the concrete plays a role in protecting the steel - bar part and the steel beam, avoiding the corrosion of the steel - bar part and the steel beam, fully exerting the connection function of the steel beam, and improving the mechanical properties of the steel - structure residential system. Moreover, when the wall is connected to the steel skeleton beam (3), the interface between the wall and the steel skeleton beam (3) is fixed with mortar, and it is not easy to appear cracks and water leakage.

[0064] The steel - bar part includes stress - bearing steel bars (5) and stirrups (6). The stress - bearing steel bars (5) are arranged horizontally, and the stirrups (6) surround and are fixed on the stress - bearing steel bars (5) to form a steel - bar skeleton. The stirrups (6) meet the shear strength within the cross - section and play a role in bearing the load of the stress - bearing steel bars (5) and the concrete structure. Connection plates (7) are fixed on both Column 1 (1) and Column 2 (2), and the stress - bearing steel bars (5) are fixedly connected to the connection plates (7), increasing the contact area between the column and the stress - bearing steel bars (5) and enhancing the firmness of the installation of the stress - bearing steel bars (5).

[0065] The concrete structure is divided into concrete section one 8 and concrete section two. Concrete section one 8 is formed in the factory, which is convenient for controlling the forming quality of concrete section one 8. Concrete section two is formed at the construction site, reducing the length of concrete that needs to be formed at the construction site, lowering the construction difficulty, and improving the on-site construction speed.

[0066] The internal frame B includes section steel two 9 and column three 10. Section steel two 9 is fixed between column three 10 and column two 2, and section steel two 9 is an H-shaped steel. The internal frame B is directly fixed by using section steel two 9 and column three 10, with a simple structure and convenient construction. Reinforcement plates 12 are fixed in the cavities of column one 1, column two 2, and column three 10 to increase the strength of the columns.

[0067] A corrugated steel plate wall 11 is provided between two adjacent column threes 10. The corrugated steel plate wall 11 includes section steel three 14 and corrugated steel plate 13. Section steel three 14 is installed on column three 10. Section steel three 14 is a T-shaped steel. Corrugated steel plate 13 is fixed on section steel three 14. Both section steel three 14 and corrugated steel plate 13 are fixed on section steel two 9 to improve the lateral stiffness of the structure. Fireproof coatings are applied to both sides of the corrugated steel plate 13 wall 11, which not only solves the fireproof problem but also solves the problem of the wall finish. A strip board 15 is fixed between section steel three 14 and column three 10, which not only plays a fireproof role but also serves as a filling wall.

[0068] A construction method for the steel beam of a steel structure residential system includes the following steps:

[0069] a. Assembling the formwork:

[0070] (1) Fix the second formwork 17 between the bottoms of two parallel first formworks 16. The first formwork 16 is provided with a notch 18.

[0071] (2) Install two third formworks 19 between the two first formworks 16. The third formwork 19 and the second formwork 17 are fixed by bolts one, so that the first formwork 16, the second formwork 17, and the third formwork 19 form an inner cavity 20. The third formwork 19 is provided with a first limiting hole 21, and the shape of the first limiting hole 21 is designed according to the shape of section steel one 4. At the same time, the third formwork 19 is provided with a second limiting hole, and the shape of the second limiting hole is designed according to the shape of the stress-bearing steel bar 5.

[0072] b. Pass section steel one 4 through the first limiting holes 21 of the two third formworks 19, and center section steel one 4 between the two third formworks 19. At this time, section steel one 4 extends into the inner cavity 20.

[0073] c. Pass the stress-bearing steel bar 5 through the second limiting holes 22 of the third formwork 19. At this time, the stress-bearing steel bar 5 extends into the inner cavity 20.

[0074] d. Install the first peripheral plate 23: The first peripheral plate 23 is provided with a first connecting part, and the first template 16 is provided with a second connecting part. Insert a second bolt between the first connecting part and the second connecting part, then screw a first nut onto the second bolt and tighten the first nut to make the connection between the first peripheral plate 23 and the first template 16 detachable.

[0075] e. Install the second peripheral plate 24: The first peripheral plate 23 is provided with a third connecting part, and the second peripheral plate 24 is provided with a fourth connecting part. Insert a third bolt between the third connecting part and the fourth connecting part, then screw a second nut onto the third bolt and tighten the second nut to make the connection between the first peripheral plate 23 and the second peripheral plate 24 detachable. Stiffening ribs 27 are arranged on the outer side of the second peripheral plate 24 in a crosswise manner to increase the strength of the second peripheral plate 24, so that the second peripheral plate 24 has good load-bearing capacity.

[0076] f. Install the steel bar support structure: The second peripheral plate 24 is provided with an installation hole 28. The steel bar support structure includes a support rod 25 and a locking member 26. Pass the support rod 25 through the installation hole 28, then screw the locking member 26 onto the support rod 25. Then move the support rod 25 vertically in the installation hole 28. When the support rod 25 supports the stressed steel bar 5, tighten the locking member 26 on the second peripheral plate 24, so that the length of the stressed steel bar 5 extending out of the third template 19 is relatively large, and the installation height of the support rod 25 can be adjusted to make the support rod 25 contact the stressed steel bar 5.

[0077] g. Install the third peripheral plate 29: The third peripheral plate 29 is provided with a third limiting hole 30 and a fourth limiting hole 37. Screw a fourth bolt between the second peripheral plate 24 and the third peripheral plate 29 to fix the first peripheral plate 23, the second peripheral plate 24 and the third peripheral plate 29 into an integral structure. At this time, the end of the first section of steel 4 passes through the third limiting hole 30, and the third limiting hole 30 supports the first section of steel 4. The stressed steel bar 5 passes through the fourth limiting hole 37, and the fourth limiting hole 37 supports the stressed steel bar 5. The connection between the second peripheral plate 24 and the third peripheral plate 29 is detachable. The third peripheral plate 29, the second peripheral plate 24 and the first peripheral plate 23 are connected into an integral structure with good load-bearing capacity. The purpose is to support the parts of the first section of steel 4 and the stressed steel bar 5 extending out of the third template 19. When injecting concrete into the middle part of the first section of steel 4, it plays a role in supporting and protecting the parts of the first section of steel 4 and the stressed steel bar 5 extending out of the third template 19 to avoid damage to their structures.

[0078] h. Fix the outer plate three 29 and the section steel one 4 by using a fixed steel plate 31: The fixed steel plate 31 is in an L shape. The fixed steel plate 31 is provided with a first through hole. Then weld a third nut 32 on the fixed steel plate 31. The third nut 32 is arranged corresponding to the first through hole. Then insert the fixed steel plate 31 into the third limit hole 30 and press the fixed steel plate 31 against the web of the section steel one 4. At this time, the second through hole arranged on the web is arranged corresponding to the first through hole. Then insert a fifth bolt into the first through hole and the second through hole, and screw the fifth bolt into the third nut 32. The screwing speed of the fifth bolt is fast. Then screw a sixth bolt between the fixed steel plate 31 and the outer plate three 29. The fixed steel plate 31 is detachably connected between the section steel one 4 and the outer plate three 29. The section steel one 4 and the outer plate three 29 can be fixedly connected through the fixed steel plate 31. When injecting concrete into the middle part of the section steel one 4, the acting force received by the section steel one 4 is transmitted to the outer plate three 29, and the overall structure formed by connecting the outer plate three 29, the outer plate two 24 and the outer plate one 23 is stably supported on the ground, avoiding the position deviation of the section steel one 4, so that the subsequent formed concrete section one 8 can be centered on the section steel one 4, improving the forming quality of the section steel one 4 and the concrete section one 8 in the factory.

[0079] i. Preliminary forming of concrete: Inject concrete into the inner cavity 20 through the notch 18 of the first template 16, and the height of the injected concrete does not exceed the bottom surface of the notch 18.

[0080] j. Integrally form the concrete to form the concrete section one 8: Install a baffle 33 in the notch 18 of the first template 16, then inject concrete into the inner cavity 20, and then insert a lifting lug 34 into the concrete. When the concrete is integrally formed, the concrete section one 8 is formed, and the stress steel bar 5 penetrates into the concrete section one 8.

[0081] If directly injecting concrete into the inner cavity 20, the upper flange of the section steel one 4 has a certain blockage to the concrete, resulting in poor fluidity of the concrete in the cavity and affecting the forming speed of the concrete section one 8. Therefore, the concrete section one 8 is injected in layers. For the first time, inject concrete into the inner cavity 20 through the notch 18 of the first template 16, and the injection position is below the upper flange of the section steel one 4. At this time, the concrete has good fluidity. For the second time, directly inject concrete into the inner cavity 20. Although the upper flange of the section steel one 4 has a certain blockage to the concrete, the height of the injected concrete is small. When the concrete exceeds the upper flange of the section steel one 4, it is no longer affected by the upper flange of the section steel one 4, improving the forming speed of the concrete section one 8.

[0082] k. Demolish the outer plate one 23, then demolish the fixed steel plate 31, then demolish the outer plate two 24, then remove the outer plate three 29, then demolish the third template 19, and then demolish the first template 16 and the second template 17 of the overall structure.

[0083] 1. According to the designed quantity and position of stirrups 6 in the construction drawings, weld and fix the stirrups 6 and the stress-bearing steel bars 5, so that the concrete section 1-8, the steel bar part and the section steel 1-4 form an integral structure.

[0084] m. By hoisting with the lifting lug 34, hoist the integral structure formed by the concrete section 1-8, the steel bar part and the section steel 1-4 between the column 1-1 and the column 1-2, and fix the section steel 1-4 between the column 1-1 and the column 1-2. Then hoist the integral structures formed by the remaining concrete section 1-8, the steel bar part and the section steel 1-4 between two adjacent column 1-2s, and fix the section steel 1-4 between two adjacent column 1-2s. Then weld the connecting plates 7 to both the column 1-1 and the column 1-2, and then weld and fix the stress-bearing steel bars 5 and the connecting plates 7. Then cut off the lifting lug 34.

[0085] n. Set U-shaped plates 36 in the area between the concrete section 1-8 and the column 1-1, and at the same time set U-shaped plates 36 in the area between the concrete section 1-8 and the column 1-2. The U-shaped plates 36 are supported on the ground at the construction site by steel pipes 35. Then inject concrete into the grooves of the U-shaped plates 36 to form the concrete section 2, so that the concrete section 1-8, the steel bar part, the section steel 1-4 and the concrete section 2 form the steel skeleton beam 3. Remove the steel pipes 35 and the U-shaped plates 36. At the construction site, the section steel 1-4 can be directly fixedly connected to the column, which can be fixed by bolts or directly welded, so that the steel skeleton beam 3 can be connected to the column, and there is enough operating space. And the length of the concrete section 2 to be formed is short, so the U-shaped plates 36 are directly used as templates, and the U-shaped plates 36 are supported on the ground by steel pipes 35. The quantity and size of the steel pipes 35 can be adjusted according to the construction requirements. The forming speed of the concrete section 2 is fast. The concrete section 2 and the concrete section 1-8 form an integral concrete structure. The section steel 1-4 and the steel bar part are wrapped by concrete. The steel bar part mainly bears tensile stress in the concrete. The steel bar part and the concrete have a large bonding ability, and can better bear the action of external forces. At the same time, the concrete plays a protective role for the steel bar part and the steel beam, avoiding the steel bar part and the steel beam from being corroded, giving full play to the connecting role of the steel beam, and improving the mechanical properties of the steel structure residential system.

[0086] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A construction method for a steel beam in a steel structure residential system. The steel structure residential system includes an external frame and an internal frame. The internal frame is installed on the external frame. The external frame includes Column 1, Column 2, and steel beams. Column 1 is provided at the four corners of the external frame. Column 2 is provided between every two adjacent Column 1s. The steel beams are provided between Column 1 and Column 2, and the remaining steel beams are provided between every two adjacent Column 2s. The internal frame is installed on Column 2. Among them, The steel-concrete composite beam includes a first section steel, a concrete structure, and a steel bar part. The first section steel and the steel bar part are arranged in the concrete structure. The steel bar part includes stress steel bars and stirrups. The stress steel bars are horizontally arranged, and the stirrups surround and are fixed on the stress steel bars. Connecting plates are fixed on both the first column and the second column. The stress steel bars are fixedly connected to the connecting plates. The concrete structure is divided into a first concrete section and a second concrete section. The first concrete section is formed in a factory, and the second concrete section is formed at a construction site. It is characterized by the following steps: a. Assembling the formwork: (1) Fix a second formwork between the bottoms of two parallel first formworks. The first formwork is provided with a notch. (2) Install two third formworks between the two first formworks. The third formworks and the second formwork are fixed by bolts I, so that the first formwork, the second formwork, and the third formworks form an inner cavity. The third formwork is provided with a first limiting hole, and the shape of the first limiting hole is designed according to the shape of the first section steel. At the same time, the third formwork is provided with a second limiting hole, and the shape of the second limiting hole is designed according to the shape of the stress steel bars. b. Pass the first section steel through the first limiting holes of the two third formworks and center the first section steel between the two third formworks. At this time, the first section steel extends into the inner cavity. c. Pass the stress steel bars through the second limiting holes of the third formworks. At this time, the stress steel bars extend into the inner cavity. d. Install the first outer plate: The first outer plate is provided with a first connecting part, and the first formwork is provided with a second connecting part. Pass a bolt II between the first connecting part and the second connecting part, then screw a nut I onto the bolt II and tighten the nut I. e. Install the second outer plate: The first outer plate is provided with a third connecting part, and the second outer plate is provided with a fourth connecting part. Pass a bolt III between the third connecting part and the fourth connecting part, then screw a nut II onto the bolt III and tighten the nut II. f. Install the steel bar support structure: The second outer plate is provided with an installation hole. The steel bar support structure includes a support rod and a locking member. Pass the support rod through the installation hole, then screw the locking member onto the support rod. Then move the support rod vertically in the installation hole. When the support rod supports the stress steel bars, tighten the locking member on the second outer plate. g. Install the third outer plate: The third outer plate is provided with a third limiting hole and a fourth limiting hole. Screw a bolt IV between the second outer plate and the third outer plate, so that the first outer plate, the second outer plate, and the third outer plate are fixed into an integral structure. At this time, the end of the first section steel passes through the third limiting hole, and the third limiting hole supports the first section steel. The stress steel bars pass through the fourth limiting hole, and the fourth limiting hole supports the stress steel bars. h. Fix and connect the third outer plate and the first section steel with a fixing steel plate: The fixing steel plate is in an L shape. The fixing steel plate is provided with a first through hole. Then weld a nut III on the fixing steel plate. The nut III corresponds to the first through hole. Then insert the fixing steel plate into the third limiting hole and press the fixing steel plate against the web of the first section steel. At this time, a second through hole provided on the web corresponds to the first through hole. Then pass a bolt V through the first through hole and the second through hole and screw the bolt V into the nut III. Then screw a bolt VI between the fixing steel plate and the third outer plate. i. Preliminary concrete shaping: Inject concrete into the inner cavity through the notch of the first formwork, and the height of the injected concrete does not exceed the bottom surface of the notch; j. Integral concrete shaping to form Concrete Section 1: Install a baffle in the notch of the first formwork, then inject concrete into the inner cavity, and then insert lifting lugs into the concrete. When the concrete is integrally shaped, Concrete Section 1 is formed, and the stress-bearing steel bars are inserted into Concrete Section 1; k. Remove the first outer formwork, then remove the fixed steel plate, then remove the second outer formwork, then move out the third outer formwork, then remove the third formwork, and then remove the first and second formworks of the overall structure; l. According to the quantity and position of the stirrups designed in the construction drawings, weld and fix the stirrups and the stress-bearing steel bars so that Concrete Section 1, the steel bar part, and Section 1 of the profiled steel form an integral structure; m. By hoisting the lifting lugs, hoist the integral structure formed by Concrete Section 1, the steel bar part, and Section 1 of the profiled steel between Column 1 and Column 2, and fix Section 1 of the profiled steel between Column 1 and Column 2. Then hoist the integral structures formed by the remaining Concrete Section 1, the steel bar part, and Section 1 of the profiled steel between two adjacent Column 2s, and fix Section 1 of the profiled steel between two adjacent Column 2s. Then weld connection plates to both Column 1 and Column 2, and then weld and fix the stress-bearing steel bars and the connection plates. Then cut off the lifting lugs; n. Set U-shaped plates in the area between Concrete Section 1 and Column 1, and at the same time set U-shaped plates in the area between Concrete Section 1 and Column 2. The U-shaped plates are supported on the ground at the construction site by steel pipes. Then inject concrete into the grooves of the U-shaped plates to form Concrete Section 2, so that Concrete Section 1, the steel bar part, Section 1 of the profiled steel, and Concrete Section 2 form a steel skeleton beam. Remove the steel pipes and the U-shaped plates.

Images