A steel-concrete composite beam employing a threaded rod planar truss

Abstract

The application discloses a steel-concrete composite beam adopting a threaded connecting rod plane truss, comprising H-shaped steel, a truss and concrete. The H-shaped steel comprises a web plate and flange plates arranged on upper and lower sides of the web plate. The upper and lower ends of the truss are connected with the upper and lower flange plates respectively. The truss comprises a plurality of connecting rods. The concrete is poured between the upper and lower flange plates. The composite beam has the characteristics of unified quality and high processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of building structures, and in particular to a steel-concrete composite beam employing a threaded rod planar truss. Background Technology

[0002] Currently, some steel-concrete composite beam structures using threaded rod planar trusses typically employ longitudinal reinforcement, connecting rods, stirrups, shear members, and other steel fittings within the compartments of the two flanges of H-beams, with concrete poured within these compartments. For example... Figure 1 As shown, an existing steel-concrete composite beam structure using a threaded rod planar truss includes an H-beam 1', shear members 2' welded to both sides of the web of the H-beam 1', with the shear members 2' serving as the connection foundation. Stirrups 3' are installed between the two flange plate sections, and the stirrups 3' are tied to the shear members 2'. Longitudinal reinforcement 4' is installed along the axial direction of the H-beam 1' and is tied to the stirrups 3'. Figure 2 As shown, another existing steel-concrete composite beam structure using threaded rod planar trusses includes H-beams 1', with connecting rods 5' welded between the upper and lower flanges, and the connecting rods 5' welded to the longitudinal reinforcement 4'. The components in the aforementioned steel-concrete composite beam structure using threaded rod planar trusses require extensive welding in the factory. The welding quality depends heavily on the skill level of the welders, and this welding work is time-consuming. Therefore, the manufacturing efficiency of the beam structure is low, and the quality cannot be standardized.

[0003] In view of the above problems, the present invention designs a steel-concrete composite beam using a threaded rod planar truss, and this case arises from this. Summary of the Invention

[0004] This invention provides a steel-concrete composite beam employing a threaded rod planar truss, which features uniform quality and high processing efficiency. Specifically, this invention is achieved through the following technical solution:

[0005] A steel-concrete composite beam using a threaded rod planar truss includes H-beams, a truss, and concrete. The H-beams include a web and flanges located on the upper and lower sides of the web. The upper and lower ends of the truss are connected to the upper and lower flanges, respectively. The truss includes several connecting rods, and concrete is poured between the upper and lower flanges.

[0006] Furthermore, the connecting rod is divided into straight web connecting rod and oblique web connecting rod. The straight web connecting rod is provided with external thread. Along the axial direction of the H-beam, there are several sets of straight web connecting rods. The straight web connecting rod is threaded to the upper and lower flange plates, and the oblique web connecting rod is connected to two adjacent straight web connecting rods.

[0007] Furthermore, on the two flanges of the H-beam, several through holes are respectively provided along the axial direction of the H-beam. The through holes on the two flanges correspond one-to-one. The inner surface of the through holes is provided with threads, and the straight web connecting rod is provided with external threads. The end of the straight web connecting rod is threadedly connected to the through holes.

[0008] Furthermore, nuts are fitted at both ends of the straight connecting rod, with one end face of the nut contacting one surface of the flange plate.

[0009] Furthermore, on the two flange plates of the H-beam, several through holes are respectively provided along the axial direction of the H-beam. The through holes on the two flange plates correspond one-to-one. The straight web connecting rod is provided with external threads, and nuts are respectively fitted at both ends of the straight web connecting rod. One end face of the nut is in contact with one surface of the flange plate.

[0010] Furthermore, the straight web connecting rod and the oblique web connecting rod are connected by a connector, which includes a first component and a second component. The two components are rotatable relative to each other. The first component is used to connect with the straight web connecting rod, and the second component is used to connect with the oblique web connecting rod.

[0011] Furthermore, the first component is a sleeve, which includes an inner cylinder and an outer cylinder. The outer cylinder is fitted over the inner cylinder and can rotate relative to the inner cylinder. The inner cylinder has internal threads on its inner wall and external threads on the straight-web connecting rod. The sleeve is fitted over the straight-web connecting rod. The second component is a clamp, which includes a first half clamp and a second half clamp. The two half clamps are wrapped around the body of the inclined web connecting rod and connected by fastening bolts. The outer surface of the outer cylinder of the sleeve has a rotating shaft, and the outer surface of the first half clamp of the clamp has a shaft hole, into which the rotating shaft is fitted.

[0012] Furthermore, both the first and second components are clamps, which include a first half-clamp and a second half-clamp. The two half-clamps wrap around the body of the diagonal web connecting rod and are connected by fastening bolts. A rotating shaft is provided on the outer surface of the first half-clamp of one clamp, and a shaft hole is provided on the outer surface of the first half-clamp of the other clamp. The rotating shaft is fitted into the shaft hole.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. The welding work in component processing is replaced by screw connection. The straight web connecting rod and the oblique web connecting rod are detachably connected by connectors, which optimizes the composition of steel accessories, improves the processing efficiency of components, and makes assembly and disassembly convenient and flexible.

[0015] 2. Reduce reliance on the technical skills of welding workers, replace welding with assembly, and switch to an easy-to-learn installation method that is easy for ordinary workers to master, thus ensuring consistent product quality.

[0016] 3. Introduce the concept of planar trusses to form a cross-section combination of "double trusses + open section members" to create a lattice-like cross-section, thereby improving the cross-section's resistance to bending and torsion.

[0017] 4. Vertically adjustable connectors, including straight and diagonal web members, are used to adapt to different beam heights. The connectors themselves possess strong anti-slip and anti-deformation properties, thus enabling the formation of a stable truss structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an existing steel-concrete composite beam embodiment using a threaded rod planar truss;

[0019] Figure 2 This is a schematic diagram of another existing steel-concrete composite beam embodiment using a threaded rod planar truss;

[0020] Figure 3 A perspective view of an embodiment of a steel-concrete composite beam employing a threaded rod planar truss provided by the present invention;

[0021] Figure 4 This is a front view of an embodiment of a steel-concrete composite beam employing a threaded rod planar truss, provided by the present invention.

[0022] Figure 5 The left view of an embodiment of a steel-concrete composite beam using a threaded rod planar truss provided by the present invention;

[0023] Figure 6 A perspective view of a connector provided by the present invention;

[0024] Figure 7 A perspective view of another connector provided by the present invention.

[0025] Among them: 1. H-beam; 11. Web plate; 12. Flange plate; 13. Through hole; 2. Truss; 21. Straight web connecting rod; 22. Diagonal web connecting rod; 3. Concrete; 4. Connector; 41. Sleeve; 411. Inner cylinder; 412. Outer cylinder; 413. Rotating shaft; 42. Clamp; 421. First half clamp; 422. Second half clamp; 423. Fastening bolt; 424. Shaft hole; 5. Nut.

[0026] 1'. H-beam; 2'. Shear reinforcement; 3'. Stirrups; 4'. Longitudinal reinforcement; 5'. Connecting rod; 6'. Concrete. Detailed Implementation

[0027] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be more thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0028] In the following description, certain specific details are set forth for the purpose of illustrating various embodiments of the invention to provide a thorough understanding of these embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this disclosure may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0029] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0030] Throughout this specification, references to "one embodiment" or "some embodiments" indicate that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0031] Furthermore, the terms "first," "second," etc., used in the specification and claims are used only for clarity of description to distinguish between different objects, and do not limit the size or other order of the objects they describe.

[0032] like Figure 3 , 4 As shown in Figure 5, a steel-concrete composite beam using a threaded rod planar truss includes an H-beam 1, a truss 2, and concrete 3. The H-beam 1 includes a web 11 and flanges 12 disposed on the upper and lower sides of the web 11. The upper and lower ends of the truss 2 are respectively connected to the upper and lower flanges 12. The concrete 3 is poured between the upper and lower flanges 12, and the concrete 3 encloses the truss 2.

[0033] Truss 2 includes several connecting rods, which are divided into straight web connecting rods 21 and diagonal web connecting rods 22. Along the axial direction of H-beam 1, several sets of straight web connecting rods 21 are provided. The straight web connecting rods 21 connect the upper and lower flange plates 12. Adjacent straight web connecting rods 21 are connected to each other by diagonal web connecting rods 22. One end of the diagonal web connecting rod 22 is connected to the previous straight web connecting rod 21, and the other end of the diagonal web connecting rod 22 is connected to the next straight web connecting rod 21.

[0034] I. Connection method between straight connecting rod 21 and flange plate 12.

[0035] like Figure 3 As shown, several through holes 13 are respectively provided on the two flange plates 12 of the H-beam 1 along the axial direction of the H-beam 1. The through holes 13 on the two flange plates 12 correspond one-to-one. The so-called one-to-one correspondence means that the axes of the two through holes 13 are on the same straight line.

[0036] The straight connecting rod 21 has two ends that pass through a set of corresponding through holes 13 on the two flange plates 12. The straight connecting rod 21 and the flange plate 12 can be connected in the following two ways.

[0037] One specific connection method between the straight connecting rod 21 and the flange plate 12 is as follows:

[0038] like Figure 4 As shown, the straight-web connecting rod 21 has external threads and passes through the through hole 13 of the upper flange plate 12. Before screwing the straight-web connecting rod 21 into the through hole 13 of the lower flange plate 12, two nuts 5 and a connector 4 are fitted onto the straight-web connecting rod 21, and then the straight-web connecting rod 21 is screwed into the through hole 13 of the lower flange. Subsequently, the two nuts 5 are adjusted to be located on different sides of the two flange plates 12. For example, if the nut 5 at the upper end of the straight-web connecting rod 21 is located on the lower surface side of the upper flange plate 12, then the nut 5 at the lower end of the straight-web connecting rod 21 is located on the upper surface side of the lower flange plate 12. Tighten the nuts 5 located at both ends of the straight connecting rod 21 so that one end face of each nut 5 contacts one surface of the flange plate 12. A single nut 5 restricts the forward or reverse movement of the straight connecting rod 21 along its axis. Therefore, the two nuts 5 located at both ends of the straight connecting rod 21 together restrict the forward and reverse movement of the straight connecting rod 21 along its axis, ultimately connecting the straight connecting rod 21 to the flange plate 12. It should be noted that the nuts 5 must be used in conjunction with washers, and the bolt tightening force should reach the predetermined tightening torque; it should not be too loose, and the force on the nuts 5 should be even.

[0039] Another specific connection method between the straight connecting rod 21 and the flange plate 12 is as follows:

[0040] The straight connecting rod 21 has external threads and passes through the through hole 13 of the lower flange plate 12. Before screwing the straight connecting rod 21 into the through hole 13 of the upper flange plate 12, two nuts 5 and a connector 4 are fitted onto the straight connecting rod 21, and then the straight connecting rod 21 is screwed into the through hole 13 of the upper flange plate 12. Subsequently, the two nuts 5 are adjusted to be on different sides of the two flange plates 12. For example, if the nut 5 at the upper end of the straight connecting rod 21 is on the lower surface side of the upper flange plate 12, then the nut 5 at the lower end of the straight connecting rod 21 is on the upper surface side of the lower flange plate 12. Tighten the nuts 5 located at both ends of the straight connecting rod 21 so that one end face of each nut 5 contacts one surface of the flange plate 12. A single nut 5 restricts the forward or reverse movement of the straight connecting rod 21 along its axis. Therefore, the two nuts 5 located at both ends of the straight connecting rod 21 together restrict the forward and reverse movement of the straight connecting rod 21 along its axis, ultimately connecting the straight connecting rod 21 to the flange plate 12. It should be noted that the nuts 5 must be used in conjunction with washers, and the bolt tightening force should reach the predetermined tightening torque; it should not be too loose, and the force on the nuts 5 should be even.

[0041] II. Connection method between straight web connecting rod 21 and oblique web connecting rod 22.

[0042] like Figure 3 , 4 As shown, the straight-web connecting rod 21 and the oblique-web connecting rod 22 are connected by the connector 4; Figure 6 , 7 As shown, the connector 4 includes a first component and a second component, which are rotatable relative to each other. The first component is used to connect with the straight connecting rod 21, and the second component is used to connect with the oblique connecting rod 22. The relative connection angle between the straight connecting rod 21 and the oblique connecting rod 22 can be adjusted by rotating the first and second components relative to each other. The number of the first and second components in the connector 4 can be selected according to actual conditions, but the functions of the first and second components and their connection relationship remain unchanged. For example, if a straight connecting rod 21 and an oblique connecting rod 22 are connected at one node via the connector 4, then the connector 4 includes one first component and one second component; or, if a straight connecting rod 21 and two oblique connecting rods 22 are connected at the same node via the connector 4, then... Figure 7 As shown, the connector 4 includes a first component and two second components.

[0043] A specific connector 4 structure and its connection application method are described below:

[0044] The first component is a sleeve 41, which includes an inner sleeve 411 and an outer sleeve 412. The outer sleeve 412 is fitted over the inner sleeve 411 and can rotate relative to the inner sleeve 411. The inner wall of the inner sleeve 411 is provided with internal threads, and the straight connecting rod 21 is provided with external threads. The sleeve 41 is fitted onto the straight connecting rod 21, and the inner sleeve 411 and the straight connecting rod 21 are connected by thread engagement.

[0045] The second component is the clamp 42, which includes a first half clamp 421 and a second half clamp 422. The two half clamps wrap around the body of the diagonal web connecting rod 22 and are connected by fastening bolts 423. At this time, the two half clamps tightly wrap around the body of the diagonal web connecting rod 22, thus realizing the connection between the clamp 42 and the diagonal web connecting rod 22.

[0046] A rotating shaft 413 is provided on the outer surface of the outer cylinder 412 of the sleeve 41, and the axial direction of the rotating shaft 413 is perpendicular to the axial direction of the sleeve 41; a shaft hole 424 is provided on the outer surface of the first half-clamp 421 of the clamp 42, and the axial direction of the shaft hole 424 is perpendicular to the axial direction of the clamp 42; the rotating shaft 413 is fitted into the shaft hole 424, and the two can rotate relative to each other.

[0047] Another specific connector 4 structure and its connection application method are described below:

[0048] Both the first and second components are clamps 42. The clamp 42 includes a first half clamp 421 and a second half clamp 422. The two half clamps wrap around the body of the diagonal web connecting rod 22 and are connected by fastening bolts 423. At this time, the two half clamps tightly wrap around the body of the diagonal web connecting rod 22, thus realizing the connection between the clamp 42 and the diagonal web connecting rod 22.

[0049] A rotating shaft 413 is provided on the outer surface of the first half-clamp 421 of one of the clamps 42, and the axis of the rotating shaft 413 is perpendicular to the axis of the clamp 42; a shaft hole 424 is provided on the outer surface of the first half-clamp 421 of the other clamp 42, and the axis of the shaft hole 424 is perpendicular to the axis of the clamp 42; the rotating shaft 413 is fitted into the shaft hole 424, and the two can rotate relative to each other.

[0050] The installation process for this type of steel-concrete composite beam is as follows:

[0051] Step 1: Prefabricate components such as H-beam 1, straight web connecting rod 21, oblique web connecting rod 22, and connector 4 in the factory.

[0052] Step 2: Pass the straight connecting rod 21 through the through hole 13 of the H-beam 1 (if it is a threaded hole, screw the straight connecting rod 21 into the threaded hole), then put the first part of the connector 4 and the nut 5 on the straight connecting rod 21, and then tighten the nut 5 to lock the straight connecting rod 21 and the H-beam 1.

[0053] Step 3: Connect the inclined web connecting rod 22 to the second part of the connector 4, and at the same time adjust the relative positions of the first and second parts in the connector 4 to complete the connection between the inclined web connecting rod 22 and the straight web connecting rod 21.

[0054] Step 4: Remove the portion of the straight connecting rod 21 that is exposed outside the flange plate 12.

[0055] Step 5: Pour concrete 3 between the upper and lower flange plates 12 of the H-beam 1. The concrete 3 will enclose the inclined web connecting rod 22 and the straight web connecting rod 21.

[0056] Unless otherwise specified in this specification, all techniques described herein are conventional in the field.

[0057] The above are preferred embodiments of the present invention. Any other simple substitutions and modifications made under the premise of the present invention should be considered as falling within the protection scope of the present invention.

Claims

1. A steel-concrete composite beam employing a threaded link planar truss, characterized by: The H-shaped steel includes a web plate and flange plates arranged on the upper and lower sides of the web plate, the truss is connected with the upper and lower flange plates at the upper and lower ends respectively, the truss includes a plurality of connecting rods, and the concrete is poured between the upper and lower flange plates; The connecting rod is divided into straight web connecting rods and inclined web connecting rods, the straight web connecting rod is provided with an external thread, a plurality of groups of straight web connecting rods are arranged along the axial direction of the H-shaped steel, the straight web connecting rods are threadedly connected with the upper and lower flange plates, and the inclined web connecting rods connect adjacent two straight web connecting rods; The straight web connecting rod and the inclined web connecting rod are connected through a connecting piece, the connecting piece includes a first part and a second part, the two parts can rotate relative to each other, the first part is used for being connected with the straight web connecting rod, and the second part is used for being connected with the inclined web connecting rod; The first part is a sleeve, the sleeve includes an inner sleeve and an outer sleeve, the outer sleeve is sleeved outside the inner sleeve, and the outer sleeve can rotate relative to the inner sleeve; an internal thread is arranged on the inner wall of the inner sleeve, an external thread is arranged on the rod body of the straight web connecting rod, and the sleeve is sleeved on the straight web connecting rod; the second part is a hoop, the hoop includes a first half hoop and a second half hoop, the two half hoops are wrapped outside the rod body of the inclined web connecting rod, and the two half hoops are connected through fastening bolts; a rotating shaft is arranged on the outer surface of the outer sleeve of the sleeve, an axle hole is arranged on the outer surface of the first half hoop of the hoop, and the rotating shaft is sleeved into the axle hole.

2. The steel-concrete composite beam employing a threaded link planar truss according to claim 1, characterized in that: A plurality of through holes are arranged on the two flange plates of the H-shaped steel along the axial direction of the H-shaped steel, the through holes arranged on the two flange plates correspond to each other in a one-to-one manner, and an internal thread is arranged on the inner surface of the through hole.

3. A steel-concrete composite beam employing a threaded link planar truss according to claim 2, characterized in that: The straight web connecting rod is provided with a nut at each end, and one end surface of the nut is in contact with one surface of the flange plate.

4. The steel-concrete composite beam employing a threaded link planar truss according to claim 1, characterized in that: A plurality of through holes are arranged on the two flange plates of the H-shaped steel along the axial direction of the H-shaped steel, the through holes arranged on the two flange plates correspond to each other in a one-to-one manner, and a nut is arranged at each end of the straight web connecting rod, and one end surface of the nut is in contact with one surface of the flange plate.

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