High-stability steel frame concrete solid-web composite beam and manufacturing method thereof

Abstract

The invention discloses a high-stability steel frame concrete solid-web composite beam and a manufacturing method thereof. The high-stability steel frame concrete solid-web composite beam comprises an upper steel beam and a lower steel beam. The upper steel beam and the lower steel beam comprise rib lapping plates which are arranged in the length direction of the upper steel beam and the lower steel beam. The upper end and the lower end of the connecting plate are welded to the inner walls of the upper steel beam and the lower steel beam respectively, and sealing cover plates are symmetrically welded to the two sides of the middle of the connecting plate. High-strength parts such as steel bars or truss angle steel are selected as the connecting parts, and the connecting parts are welded to the side faces of the rib lapping plates, so that connection and fixation are achieved; the pouring concrete is filled in a region cavity enclosed by the upper steel beam, the lower steel beam and the sealing cover plates at the two ends; the convex edges are arranged on the outer sides of the close edges of the upper rib lapping plate and the lower rib lapping plate in the length direction in a penetrating mode and used for generating gaps when follow-up connecting pieces are attached, the pi-shaped steel beam design is provided, welding gaps can be formed between steel bars and the rib lapping plates, welding flux can fully enter the welding gaps during welding, then stable welding is formed, and the connecting strength is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of prefabricated reinforced concrete components, and particularly relates to a high-stability steel-framed concrete solid-web composite beam and a manufacturing method thereof. BACKGROUND

[0002] The prefabricated reinforced concrete component has very important significance in modern buildings, and compared with the traditional components, it saves a large number of processes and time such as on-site formwork, binding of reinforcement, pouring of concrete, curing, etc. after being transported to the site, hoisted, connected and handled at nodes; the component is produced by using standardized molds and precise automatic or semi-automatic equipment in a factory, has high dimensional accuracy and good appearance quality, reduces safety hazards in on-site construction and saves costs.

[0003] The steel-concrete solid-web composite beam is a very widely used structure form in modern structures, which ingeniously combines the advantages of steel and concrete; the steel has good tensile performance: the steel beam mainly bears tension, fully utilizing the high strength of steel; the concrete has good compressive performance: the concrete slab mainly bears pressure, fully utilizing the characteristics of high compressive strength and large rigidity of concrete, and through reliable shear connectors (such as studs), the steel beam and the concrete are ensured to bear force together.

[0004] The steel-concrete solid-web composite beam most commonly uses I-shaped and H-shaped cross-section steel, which is not conducive to one-time concrete pouring and forming due to the need for pouring concrete on both sides. Currently, there is a structure in which the middle of the upper and lower steel beams is fixed by a reinforcement cooperation rib plate, as disclosed in the patent document with the announcement number CN 111779190 A, but the multiple steel reinforcement plates are welded with the upper and lower rib plates in an inclined splicing manner, the multiple steel reinforcement plates are not easy to be precisely positioned, and it is difficult to be batch precision welded by a welding robot; the steel reinforcement plate is not an integral whole, and has poor connection stability; when the rib plate is welded with the steel reinforcement, only the edge is welded, the weld is small, the overall strength is low, and meanwhile, the rib plate structure is flat, and the combination effect with the concrete is poor. SUMMARY

[0005] The present application provides a high-stability steel-framed concrete solid-web composite beam and a manufacturing method thereof, provides a π-shaped steel beam design, a welding gap is formed between the steel reinforcement and the rib plate, the welding flux fully enters the welding gap during welding, and then stable welding is formed, thereby greatly improving the connection strength to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-stability steel-framed concrete solid-web composite beam, comprising an upper steel beam and a lower steel beam; The upper steel beam and the lower steel beam are arranged oppositely with a certain space in the middle; The upper steel beam and the lower steel beam each comprise a lashing plate protruding vertically along the surface thereof into the interior space of the steel beam, and two lashing plates are arranged along the length direction of the upper and lower steel beams; The structure further comprises a connecting plate arranged along the length direction of the upper and lower steel beams on the inner side of the two end portions of the upper and lower steel beams, the upper and lower ends of the connecting plate are welded to the inner walls of the upper and lower steel beams respectively, and a cover plate is symmetrically welded to the two sides of the middle portion of the connecting plate, the cover plate is perpendicular to the connecting plate and separates the connecting plate into an outer connecting segment and an inner extending segment, and a plurality of mounting holes are formed in the outer connecting segment; The structure further comprises a connecting member selected from a reinforcing bar or a truss angle steel, which is welded to the side surface of the lashing plate to achieve connection and fixation; The structure further comprises cast concrete filled in a region cavity enclosed by the upper and lower steel beams and the two end cover plates. The edges of the upper and lower lashing plates close to each other are provided with protruding edges penetrating along the length direction on the outer side, which are used to generate gaps when the subsequent connecting member is attached.

[0007] Preferably, the connecting member is a reinforcing bar, which is distributed in a wave shape along the length direction of the lashing plate, and the peaks and valleys of the reinforcing bar are respectively attached to the protruding edges of the upper and lower lashing plates, so that welding gaps are formed between the reinforcing bar and the lashing plate.

[0008] Preferably, the reinforcing bar is a whole reinforcing bar, which is continuously bent by a bending device to form continuous peaks and valleys.

[0009] Preferably, the angle between the length portions of the peaks and valleys of the whole reinforcing bar and the horizontal plane alternately is 75 degrees and 105 degrees, the span of the peaks to the valleys on both sides along the length direction of the composite beam is S, and S≤250mm, and the reinforcing bar has reserved ends, and the two ends of the reinforcing bar are welded to the outer walls of the inner extending segments of the connecting plates.

[0010] Preferably, the edges of the upper and lower lashing plates close to each other are provided with second protruding edges penetrating along the length direction on the outer side; and the thickness of the second protruding edges is generally 2 times the diameter of the round reinforcing bar.

[0011] Preferably, the cross section of the second protruding edges is a semicircular structure.

[0012] Preferably, in the concrete solid-web composite beam, crack-resistant structural bars are arranged in the longitudinal direction parallel to the beam span direction, are fixedly installed at the inner side of the reinforcing bar, are firmly bound at the intersection points by iron wires, and are collectively bound to form a reinforcing bar mesh, and the two ends of the crack-resistant structural bars are welded to the cover plates.

[0013] Preferably, when the composite beam of the structure needs to be connected with an external secondary beam, the secondary beam node connecting plate is welded to the inner walls of the upper and lower steel beams before the cast concrete of the steel skeleton, and then the secondary beam node connecting plate is bolted or bolted and welded to the secondary beam according to the design calculation requirements.

[0014] The application discloses a high-stability steel frame concrete solid-web composite beam manufacturing method. S1: a π-shaped steel beam is taken and placed upside down, the π-shaped steel beam comprises a steel beam and two parallel lacing plates, the lacing plates are provided with a convex edge and a second convex edge; A connecting plate is arranged at both ends of the π-shaped steel beam, the connecting plate is arranged along the length direction of the π-shaped steel beam, and the lower end of the connecting plate is welded with the upper wall of the π-shaped steel beam; Cover plates are symmetrically welded at both sides of the middle part of the connecting plate, the cover plates are perpendicular to the connecting plate and separate the connecting plate into an outer connecting section and an inner extending section, and a plurality of mounting holes are formed in the outer connecting section; S2: the π-shaped steel beam is taken and placed above the π-shaped steel beam placed upside down in step 1, and then the π-shaped steel beam is welded with the connecting plate and the cover plate; S3: two whole steel bars are selected and continuously bent by a bending device to form continuous wave crests and wave troughs; the wave crests and wave troughs of the two steel bars are respectively matched with the convex edges of the upper and lower lacing plates, and a consistent welding gap is formed between the steel bars and the lacing plates; S4: a welding robot is moved to weld, and welding flux can fully enter the welding gap 8 during welding, and then stable welding is formed; S5: the skeleton is turned over on a mold table, concrete is poured and filled in a cavity surrounded by the upper and lower steel beams and the cover plates at both ends, and the concrete in the cavity is fully poured and vibrated to prevent bubbles from accumulating to form cavities; S6: the mounting holes on the outer side of the connecting plate are used as post-cast concrete nodes, the composite beam with the structure is first connected by bolted welding between the connecting plate and a column steel corbel, then formwork is set for casting in-situ concrete in the connecting node area, and overall fixation is realized.

[0015] Preferably, the method further comprises the following steps: S11: after step S2 and before step S3, anti-cracking structural bars are arranged, and the anti-cracking structural bars are welded at both ends of the cover plates; S12: the anti-cracking structural bars are fixedly arranged at the inner side of the steel bars, and the anti-cracking structural bars are firmly bound at the intersection by iron wires to form a steel mesh, and the steel mesh is integrated with the concrete after the concrete is poured.

[0016] Compared with the prior art, the application has the following beneficial effects: 1. The concrete solid-web composite beam structure is provided, the steel consumption and the self weight are reduced through the hollow-web truss structure, the steel skeleton also acts as a formwork during pouring of the concrete, the formwork setting is omitted, the pouring of the concrete into the internal cavity is facilitated, and the solid-web steel frame concrete composite beam is formed.

[0017] 2. A π-shaped steel beam design is provided, a welding gap is formed between the reinforcing bar and the lacing plate, and when welding, the welding flux fully enters the welding gap, and then a stable weld is formed, greatly improving the connection strength.

[0018] 3. When welding, sufficient precision control is ensured, that is, when the reinforcing bar is welded with the lacing plate, the welding gap at each connection is kept consistent, and by setting the convex edge, the reinforcing bar can be quickly placed by simply being quickly attached, and a consistent welding gap can be left at the same time.

[0019] 4. The whole reinforcing bar connected as a whole strengthens the overall connection strength, keeps the horizontal center, and at the same time leaves a consistent welding gap of the upper and lower steel beams, and is efficient and precise.

[0020] 5. A design of a whole bending reinforcing bar welded with a lacing plate is provided, which first simplifies the processing process, and when welded with a lacing plate of the same length, compared with the traditional inclined splicing method of multiple reinforcing plates welded with upper and lower lacing plates, it is easier to position precisely and ensure welding precision, and the whole reinforcing bar also strengthens the overall connection strength, and the design of the length part of the reinforcing bar alternately having an angle of 75 degrees and 105 degrees with the horizontal plane, after being welded with the lacing plate, the two-way inclined angle of the whole reinforcing bar is set, which can play a role in combination and force connection between the steel and the concrete, and also can resist shear failure of diagonal cracks.

[0021] 6. After pouring concrete, the second convex edge can improve the connection capacity, which is achieved by the convex structure to keep stable gripping with the surrounding concrete, and the semi-circular structure avoids gaps in the concrete at the semi-circular structure while providing gripping force.

[0022] 7. The profiled steel part can be rolled, batch customized, has stable cross-sectional characteristics and good stress performance, and the matching serpentine reinforcing bar can be automatically added by a robot, and has high industrialization degree. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a front view structural schematic diagram of the present application; Figure 2 is an enlarged structural schematic diagram of A of Figure 1 Figure 3 is a cross-sectional structural schematic diagram of the present application; Figure 4 is an enlarged structural schematic diagram of B of Figure 3 Figure 5 is a structural schematic diagram of the upper steel beam of the present application; Figure 6 is a structural schematic diagram of the lower steel beam of the present application; ​​Figure 7 Fig. 1 is a schematic diagram of a steel bar mounting structure of the present application; Figure 8 Fig. 2 is a schematic diagram of a C-shaped structure of the present application; Figure 7 Fig. 3 is a schematic diagram of an enlarged structure of the present application at C; Figure 9 Fig. 4 is a schematic diagram of an external secondary beam connecting structure of the present application.

[0024] In the figure: 1, upper steel beam; 2, lower steel beam; 3, lapping rib plate; 301, arc-shaped transition part; 302, convex edge; 303, second convex edge; 4, connecting plate; 401, outer connecting section; 402, inner extending section; 403, mounting hole; 5, cover plate; 6, connecting piece; 601, steel bar; 6011, wave crest; 6012, wave trough; 6013, end; 7, concrete; 8, welding gap; 9, anti-cracking structural rib; 10, external secondary beam; 11, secondary beam node connecting plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Embodiment 1, please refer to Figures 1-6 The present application provides a high-stability steel-frame concrete solid-web composite beam, which comprises an upper steel beam 1 and a lower steel beam 2. One upper steel beam 1 and one lower steel beam 2 are selected, and the steel beams are preferably formed by compression molding. The upper and lower steel beams are arranged oppositely with a certain space in the middle. The space is set according to actual needs, and the total height is generally not less than 300 mm. The space is used for the installation of subsequent internal reinforcing structures of the beam and the pouring of concrete in the beam. The upper steel beam 1 and the lower steel beam 2 each comprise a lapping rib plate 3 protruding vertically into the internal space of the upper and lower steel beams along the surface thereof. The lapping rib plate 3 protrudes by a certain height, and the height is preferably 5 times the diameter of a round steel bar plus 20 mm. In order to achieve balance on both sides of the whole, two lapping rib plates 3 are arranged in this embodiment. The two lapping rib plates 3 are arranged in parallel and along the length direction of the upper and lower steel beams. The two lapping rib plates 3 are used for welding subsequent connecting pieces on both sides. The lapping rib plates 3 of the upper steel beam 1 and the lower steel beam 2 correspond to each other. When the connecting pieces are welded to the lapping rib plates 3, the connecting pieces are attached to the lapping rib plates 3, and the whole is in one vertical working surface. The welding robot can complete efficient welding work in one working surface. Further comprising a connecting plate 4, the connecting plate 4 is arranged inside the two ends of the upper and lower steel beams along the length direction of the upper and lower steel beams, the upper and lower ends of the connecting plate 4 are welded with the inner walls of the upper and lower steel beams respectively, the two sides of the middle part of the connecting plate 4 are symmetrically welded with a cover plate 5, the cover plate 5 is perpendicular to the connecting plate 4 and separates the connecting plate 4 into an outer connecting segment 401 and an inner extending segment 402, a plurality of mounting holes 403 are formed on the outer connecting segment 401; Further, a welding transition plate is arranged at the connection between the inner extending segment 402 and the upper and lower steel beams, the welding transition plate is a right triangle, two right angle sides are welded and fixed with the connecting plate extending segment and the steel beam respectively, the welding transition plate is used to reduce stress concentration, which is a known technology and will not be described in the drawings; Further comprising a connecting piece 6, the connecting piece 6 is selected from high-strength pieces such as steel bars or truss angle steels, and is welded with the side of the lacing plate 3 to realize connection and fixation, the steel bars or truss angle steels and other equivalent alternative pieces can be used alone or in combination, and the specific selection is flexible according to actual needs; During welding, a mobile welding robot is used for welding, the mobile welding robot is installed on a mobile platform through a multi-joint mechanical arm, which is usually a 6-axis or more degree-of-freedom industrial robot arm, providing sufficient flexibility and accessibility to accurately position the welding gun to different positions and angles of the weld; the welding gun is installed at the end of the mechanical arm, and different types of welding guns are selected according to the welding process (MIG / MAG, TIG, SAW, laser welding, etc.); for processes such as MIG / MAG that require welding wire, a wire feeder stably and uniformly feeds the welding wire into the welding gun; a welding wire reel / welding agent device is integrated on the mobile platform to provide welding consumables.

[0027] Further comprising pouring and filling concrete 7 in the area cavity enclosed by the upper and lower steel beams and the two end cover plates 5 to form the combined beam structure of the embodiment; Further, an arc-shaped transition part 301 is arranged between the lacing plate 3 and the steel beam, which is used to reduce the stress concentration of the transition part; The edges of the upper and lower lacing plates close to each other are provided with a convex edge 302 along the length direction on the outside, the convex edge 302 has a convex thickness of about one fourth of the thickness of the connecting piece 6, which is used to generate a gap when the connecting piece 6 is attached subsequently, the connecting piece can be selected from steel bars or truss angle steels, when it is a truss angle steel or a non-circular steel bar, if it is directly attached with the lacing plate 3, the attachment surface cannot enter the welding agent, only the attachment edge has poor welding agent combination stability, and the gap is beneficial for the subsequent welding agent to enter and fully weld.

[0028] Please refer to Figure 4 , Figure 7As a further embodiment, the connecting member 6 is selected as a reinforcing bar 601, including round and square reinforcing bars, etc., and other connecting members such as truss angle steel can also be equally replaced. The reinforcing bar 601 is distributed in a wave shape along the length direction of the batten plate 3. The wave crest 6011 and the wave trough 6012 of the reinforcing bar 601 are respectively attached to the convex edges 302 of the upper and lower batten plates. Thus, a welding gap 8 is formed between the reinforcing bar 601 and the batten plate 3. During welding, especially industrial robot welding, the welding flux can be fully and automatically filled into the welding gap 8, and then a stable welding is formed, which greatly improves the connection strength. During welding, sufficient precision control is required, that is, the welding gap thickness of each connecting part should be kept consistent when the reinforcing bar 601 is welded with the batten plate 3. By setting the convex edges 302, the reinforcing bar 601 can be quickly and conveniently placed by simply attaching it, and a welding gap 8 with consistent thickness can be left at the same time.

[0029] Please refer to Figure 7 As a further embodiment, the reinforcing bar is a whole reinforcing bar which is continuously bent by a bending device to form continuous wave crests 6011 and wave troughs 6012. This first simplifies the processing process. When welded with a batten plate of the same length, compared with the traditional method of welding the upper and lower batten plates with multiple batten plates through inclined splicing, the reinforcing bar which is continuously bent in advance is easier to be precisely positioned compared with the multiple batten plates spliced, which ensures the welding precision. At the same time, the whole reinforcing bar also strengthens the overall connection strength and keeps the horizontal center, so that a consistent welding gap 8 of the upper and lower steel beams can be left at the same time. The existing multiple splicing is not conducive to maintaining a uniform welding gap 8, such as a larger lower gap and a smaller upper gap, and the splicing efficiency is relatively low.

[0030] Please refer to Figure 8 As a further embodiment, the angle between the length part of the wave crest 6011 and the wave trough 6012 of the reinforcing bar and the horizontal plane alternates between 75 degrees and 105 degrees. The span of the wave crest 6011 to the wave trough 6012 on both sides along the length direction of the composite beam is S, and S≤250mm. After welding with the batten plate, considering that the internal filling concrete of the steel skeleton is prone to form inclined shear failure under stress, the two-way inclined angle of the whole reinforcing bar is set to play a role in the combined tension and shear force between the steel and the concrete, and also to resist the shear failure of the diagonal crack. After the overall welding is completed, the reinforcing bar also has a reserved end 6013. The two ends 6013 of the reinforcing bar are welded on the outer wall of the inner side extension 402 of the connecting plate 4, instead of being directly welded on the batten plate 3. This can further play a role in the overall connection with the connecting plate 4.

[0031] Please refer to Figure 4As a further embodiment, a second flange 303 is provided on the outer side of the edges of the upper and lower reinforcement plates along the length direction; the thickness of the second flange 303 is generally twice the diameter of the round steel bar, and its larger size is maintained. After pouring concrete, the second flange 303 can improve the connection capacity. Specifically, the protruding structure maintains a stable grip with the surrounding concrete, which can not only stabilize the stress performance of the steel section itself, but also form a whole with the concrete.

[0032] See also Figure 4 As a further embodiment, the cross section of the second convex edge 303 is a semicircular structure. While the semicircular structure provides gripping force, the semicircular cross section is small, thereby preventing gaps in the concrete at the semicircular structure.

[0033] See also Figure 3 As a further embodiment, anti-cracking structural reinforcement 9 is provided in the concrete solid composite beam along the longitudinal direction parallel to the beam span direction to control shrinkage cracks and temperature cracks in the concrete. The fixed installation position thereof is preferably aligned with the inner side of the steel bar 601, and is firmly tied at the intersection with iron wire (such as 20-22 galvanized iron wire) to form a steel mesh. The two ends of the anti-cracking structural reinforcement 9 are welded to the cover plate 5. After the concrete is poured, the steel mesh is bonded to the concrete to become one, thereby playing a role in resisting cracking of the entire concrete.

[0034] Example 2, please refer to Figure 9 As a further embodiment, the composite beam in the structure of this embodiment, when connected to the column, realizes a mixed connection of bolts and welds with the column through the connecting plates at both ends. The setting of the connecting plate facilitates the rapid connection between the beam and the column, and also forms a post-cast section of the connection node. Since the middle section of the beam is pre-cast in the factory, only the outer connecting section of the connecting plate needs to be cast on the construction site. When the composite beam of the structure needs to be connected to the external secondary beam 10, before the steel skeleton is poured with concrete, the secondary beam node connecting plate 11 is first welded to the inner wall of the upper and lower steel beams, and then the secondary beam node connecting plate 11 is bolted or connected to the secondary beam 10 by a mixed connection of bolts and welds according to the design calculation requirements.

[0035] In Example 3, the present invention provides a method for manufacturing a high-stability steel frame concrete solid web composite beam, comprising the following steps: S1: Take a π-shaped steel beam and turn it upside down. The π-shaped steel beam includes a steel beam and two parallel ribs. The edges of the ribs close together are provided with a convex edge 302 along the length direction to create a gap when the steel bars are subsequently attached. The edges of the upper and lower ribs close together are provided with a second rib 303 along the length direction to improve the connection ability after pouring concrete. Specifically, the protruding structure maintains a stable grip on the surrounding concrete. A connecting plate 4 is arranged at both ends of the pi-shaped steel beam along the length direction of the pi-shaped steel beam, and the lower end of the connecting plate 4 is welded to the upper wall of the pi-shaped steel beam, A cover plate 5 is symmetrically welded to the middle of the connecting plate 4, the cover plate 5 is perpendicular to the connecting plate 4, and the connecting plate 4 is divided into an outer connecting segment 401 and an inner extending segment 402, a plurality of mounting holes 403 are formed in the outer connecting segment 401, Then a welding transition plate is arranged at the connecting position of the connecting plate 4 and the pi-shaped steel beam, the welding transition plate is a right triangle, two right angle sides are respectively welded and fixed to the extending segment of the connecting plate and the steel beam, and the welding transition plate is used for reducing stress concentration.

[0036] S2: Take the pi-shaped steel beam, and place it above the inverted pi-shaped steel beam in step 1, then weld the pi-shaped steel beam to the connecting plate and the cover plate 5 in the same way. After the inverted pi-shaped steel beam is welded to the connecting plate 4 and the cover plate 5, it serves as a stable support, which facilitates the welding of the upper pi-shaped steel beam, and forms an overall frame with a containing space in the middle.

[0037] S3: Select two whole steel bars formed by continuous bending through a bending device to form continuous wave peaks 6011 and wave troughs 6012; the steel bars 601 are distributed in a wave shape along the length direction of the lapping plate 3, and the wave peaks 6011 and the wave troughs 6012 of the two steel bars 601 are respectively attached to the convex edges 302 of the upper and lower lapping plates on both sides, and the convex edges 302 are used for conveniently placing the steel bars 601 by quickly attaching them. A consistent welding gap 8 is formed between the steel bars 601 and the lapping plate 3.

[0038] S4: Welding by moving a welding robot, the welding robot is installed on a moving platform through a multi-joint mechanical arm, and a welding gun is installed at the end of the mechanical arm. For MIG / MAG processes that require welding wire, a wire feeder stably and uniformly feeds the welding wire into the welding gun. During welding, the welding flux fully enters the welding gap 8, and then stable welding is formed, greatly improving the connection strength.

[0039] S5: Turn the skeleton over on the mold table, and pour and fill concrete 7 in the cavity surrounded by the upper and lower steel beams and the end cover plates 5. Pour and vibrate the concrete in the cavity sufficiently to prevent air bubbles from accumulating to form cavities. Of course, in order to facilitate transportation, the steel skeleton can also be poured with concrete at the construction site after assembly in the factory, which can reduce transportation costs and form the composite beam structure of the embodiment.

[0040] S6: Through the mounting holes on the outer side of the connecting plate 4, the composite beam of this structure is connected to the column steel corbel through bolted and welded connection, and then the connection node area is cast in place to realize overall fixation.

[0041] The application provides a high-stability steel frame concrete solid-web composite beam manufacturing method, which comprises the following steps. S11: after the step S2 and before the step S3, an anti-cracking structural rib 9 is arranged, and the two ends of the anti-cracking structural rib 9 are welded on the cover plate 5.

[0042] S12: the fixed mounting position is preferably attached to the inner side of the steel bar 601, and the intersection is firmly bound by iron wire (such as 20-22 galvanized iron wire), and the steel bar mesh is formed by common binding; after the concrete is poured, the steel bar mesh is integrated with the concrete to play a role of integral concrete anti-cracking.

[0043] The application provides a high-stability steel frame concrete solid-web composite beam manufacturing method, which comprises the following steps. S11: before the steel frame is poured with concrete, when the composite beam needs to be connected with the external secondary beam 10, the secondary beam node connecting plate 11 is welded on the inner wall of the upper and lower steel beams, the welding position is set according to the requirement, the shape and position of the secondary beam node connecting plate 11 need not interfere with the steel bar 601, such as being welded on the outer side of the steel bar 601, and then the secondary beam node connecting plate 11 is connected with the secondary beam 10 by bolting or mixed connection of bolting and welding according to the design calculation requirement.

[0044] Although the embodiments of the application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the application, and all these changes, modifications, substitutions and variations are within the scope of the application.

Claims

1. A high-stability steel frame concrete solid web composite beam, characterized in that: It includes an upper steel beam (1) and a lower steel beam (2); The upper steel beam (1) and the lower steel beam (2) are arranged opposite to each other in an upper and lower direction, with a certain space between them; The upper steel beam (1) and the lower steel beam (2) both include rib plates (3) protruding vertically along their surfaces toward the inner space of the upper and lower steel beams. Two rib plates (3) are provided and are arranged along the length direction of the upper and lower steel beams. It also includes a connecting plate (4), the connecting plate (4) is on the inner side of both ends of the upper and lower steel beams, the connecting plate (4) is arranged along the length direction of the upper and lower steel beams, the upper and lower ends of the connecting plate (4) are respectively welded to the inner walls of the upper and lower steel beams, and a cover plate (5) is symmetrically welded on both sides of the middle of the connecting plate (4), the cover plate (5) is perpendicular to the connecting plate (4), and separates the connecting plate (4) into an outer connecting section (401) and an inner extension section (402), and a plurality of mounting holes (403) are provided on the outer connecting section (401); The connecting member (6) is made of steel bars or truss angle steel and is connected and fixed by welding to the side of the reinforcement plate (3); It also includes pouring concrete (7) filled in the cavity of the area enclosed by the upper and lower steel beams and the cover plates (5) at both ends; The edges of the upper and lower rib plates are close to each other and are provided with convex edges (302) along the length direction on the outside, so as to generate a gap when the subsequent connecting piece (6) is fitted together.

2. The high-stability steel frame concrete solid web composite beam according to claim 1, characterized in that: The connecting member (6) is a steel bar (601), and the steel bar (601) is distributed in a wave shape along the length direction of the reinforcement plate (3). The wave crests (6011) and the wave troughs (6012) of the steel bar (601) are respectively fitted with the convex edges (302) of the upper and lower reinforcement plates, thereby forming a welding gap (8) between the steel bar (601) and the reinforcement plate (3).

3. The high-stability steel frame concrete solid web composite beam according to claim 1, characterized in that: The steel bar is a whole steel bar, which is continuously bent by a bending device to form continuous wave crests (6011) and wave troughs (6012).

4. The high-stability steel frame concrete solid web composite beam according to claim 1, characterized in that: The angles of the length of the entire steel bar, excluding the crest (6011) and the trough (6012), with the horizontal plane are alternately 75 degrees and 105 degrees. The span from the crest (6011) to the troughs (6012) on both sides along the length direction of the composite beam is S, S≤250mm. The steel bar also has a reserved end (6013), and the two ends (6013) of the steel bar are respectively welded to the outer wall of the inner extension section (402) of the connecting plate (4).

5. The high-stability steel frame concrete solid web composite beam according to claim 1, characterized in that: A second flange (303) is provided on the outer side of the edges of the upper and lower reinforcement plates along the length direction; the thickness of the second flange (303) is generally twice the diameter of the round steel bar.

6. The high-stability steel frame concrete solid web composite beam according to claim 1, characterized in that: The cross section of the second convex edge (303) is a semicircular structure.

7. The high-stability steel frame concrete solid web composite beam according to claim 1, characterized in that: Anti-cracking structural reinforcement (9) is provided in the concrete solid composite beam along the longitudinal direction parallel to the beam span direction, fixedly installed at the inner side of the reinforcement (601), firmly tied with iron wire at the intersection, and tied together to form a reinforcement mesh, and the two ends of the anti-cracking structural reinforcement (9) are welded to the cover plate (5).

8. The high-stability steel frame concrete solid web composite beam according to claim 1, characterized in that: When the composite beam of the structure needs to be connected to the external secondary beam (10), before the steel skeleton is poured with concrete, the secondary beam node connection plate (11) is first welded to the inner wall of the upper and lower steel beams, and then the secondary beam node connection plate (11) is bolted or bolt-welded in combination with the secondary beam (10) according to the design calculation requirements.

9. A method for manufacturing a high-stability steel frame concrete solid web composite beam, characterized in that: The steps include: S1: Take a π-shaped steel beam and turn it upside down. The π-shaped steel beam includes a steel beam and two parallel reinforcement plates. The reinforcement plates are provided with a convex edge (302) and a second convex edge (303); Connecting plates (4) are placed at both ends of the π-shaped steel beam, the connecting plates (4) are arranged along the length direction of the π-shaped steel beam, and the lower ends of the connecting plates (4) are welded to the upper wall of the π-shaped steel beam; The connecting plate (4) is symmetrically welded to both sides of the middle portion of the connecting plate (4). The covering plates (5) are perpendicular to the connecting plate (4) and separate the connecting plate (4) into an outer connecting section (401) and an inner extension section (402). The outer connecting section (401) is provided with a plurality of mounting holes (403). S2: Take the π-shaped steel beam and place it on top of the inverted π-shaped steel beam in step 1, and then weld the π-shaped steel beam to the connecting plate and the cover plate (5) in the same way; S3: Select two whole steel bars that are continuously bent by a bending device to form continuous wave crests (6011) and wave troughs (6012); the wave crests (6011) and wave troughs (6012) of the steel bars (601) on both sides are respectively fitted with the convex edges (302) of the upper and lower reinforcement plates on both sides, and a consistent welding gap (8) is formed between the steel bars (601) and the reinforcement plates (3); S4: welding by moving the welding robot, during welding, the flux will fully enter the welding gap (8), and then form a stable weld; S5: Turn the frame over on the formwork platform, and pour concrete (7) into the cavity of the area enclosed by the upper and lower steel beams and the cover plates (5) at both ends to fill it. The concrete in the cavity is poured and vibrated sufficiently to prevent air bubbles from accumulating and forming cavities; S6: Through the mounting holes on the outside of the connecting plate (4), as the post-cast concrete nodes, the composite beam of this structure is first connected to the steel bracket of the column through the connecting plate (4) by bolt welding, and then the concrete is cast in place in the connection node area by formwork to achieve overall fixation.

10. The method for manufacturing a high-stability steel frame concrete solid web composite beam according to claim 9, characterized in that: The steps include: S11: After step S2 and before step S3, anti-crack structural ribs (9) are further provided, and both ends of the anti-crack structural ribs (9) are welded to the cover plate (5); S12: The fixed installation position is attached to the inner side of the steel bar (601), and is firmly tied with iron wire at the intersection to form a steel mesh. After pouring concrete, the steel mesh is bonded to the concrete to form a whole.

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