Composite beam with lateral stability in construction stage
By setting truss bars, shear studs and connecting steel bars on the steel beams of the combined beams, the problem of insufficient lateral stability during the construction phase is solved, and steel savings and construction efficiency are achieved.
Patent Information
- Application Number
- CN202420999330.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-05-09
AI Technical Summary
During the construction stage of the combined beam of steel structure industrial factory, the lateral stability of steel beams is difficult to meet when they bear material weight and construction load, resulting in the threat of construction safety.
By setting up multiple sets of parallel steel beams, truss bars, shear studs and connecting steel bars on the steel beams, the lateral stiffness of the truss bars and the shear resistance of the shear studs are used to form an integral structure to provide lateral stability during the construction phase.
The lateral stability of the combined beam during the construction phase is achieved, the upper flange width and thickness of the steel beam is reduced, the use of steel is saved, and the construction process and construction period are simplified.
Smart Images
Figure CN222685901U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of composite beams, and particularly relates to a composite beam with lateral stability during the construction stage. Background Art
[0002] Nowadays, in steel structure industrial plants, when the floor load is large and the span is large, a common practice is to use steel-concrete composite beams. The flanges of the composite beams are steel truss floor decks, which are combined into a whole through shear connectors to work together. The characteristics of this structure are that the steel beam is in tension and the concrete slab is in compression, which gives full play to the characteristics of the two materials. Under the same load, the steel consumption of this structure saves 15%-30% of steel compared with non-composite beams; at the same time, during use, the concrete flange plate is wider, which can effectively resist the lateral instability of the beam, improve the stability of the beam, and improve the stress state of the steel beam.
[0003] However, during the construction phase, if there is no temporary support under the steel beam, the steel beam will bear the weight of the steel truss floor slab before the concrete hardens and the construction load alone, and its lateral stability is difficult to meet. Figure 1 As shown, the usual practice at this stage is to add a rigid rod 20 (such as angle steel, channel steel or I-beam) in the middle of the steel beam 10 to reduce the lateral calculated length to increase its lateral stability. The disadvantage of this approach is that it has many construction steps and increases the cost, and cannot achieve the advantage of composite beams in saving steel compared to non-composite beams. Utility Model Content
[0004] The utility model provides a composite beam with lateral stability in the construction stage, which solves the problems in the prior art.
[0005] The technical solution of the utility model is achieved in this way:
[0006] A composite beam with lateral stability during the construction phase, comprising a plurality of sets of parallel steel beams, wherein truss bars are fixedly laid on the upper ends of the steel beams, the truss bars are arranged in a direction perpendicular to the steel beams, and the truss bars are arranged at equal intervals according to actual force, so as to provide lateral stability for the steel beams;
[0007] Shear studs are set on the upper flange of the steel beam, two in each row, and arranged at equal intervals along the longitudinal direction of the steel beam;
[0008] The steel beam is also partially provided with connecting steel bars in a U-shape, and the two ends of the connecting steel bars are connected to the side truss bars by on-site welding.
[0009] Furthermore, the shear studs, welding studs and steel beams are fixedly connected by welding.
[0010] Furthermore, each group of the truss bars includes two groups of lower chord steel bars arranged at the bottom, a group of upper chord steel bars is arranged above the two groups of lower chord steel bars, and web bars are arranged between the upper chord steel bars and the lower chord steel bars.
[0011] Furthermore, the spacing between each two adjacent groups of connecting steel bars is 1500 mm, and the diameter of the connecting steel bars is 12 mm.
[0012] Furthermore, the connecting steel bars, the welding studs and the two groups of lower chord steel bars are fixedly welded, so that the upper flange of the steel beam and the truss bars can be connected.
[0013] After adopting the above technical solution, the beneficial effects of the utility model are:
[0014] 1. In the utility model, by setting connecting steel bars every 1500mm, the steel beam, welded studs and truss bars are effectively connected together, the lateral stiffness of the truss bars is fully utilized to resist the lateral instability of the steel beam, and the width and thickness of the upper flange of the steel beam are reduced. In this way, the lateral stability of the steel beam is ensured and steel can be saved.
[0015] 2. In the utility model, the connecting steel bars can be directly welded on site and fixedly connected to the steel beam, which can achieve rapid installation and reduce construction time. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a schematic diagram of a structure with lateral stability of a composite beam during the construction stage in the prior art;
[0018] Figure 2 It is a schematic diagram of the structure of the utility model with lateral stability of the composite beam during the construction stage;
[0019] Figure 3 This is a schematic diagram of the steel bar connection.
[0020] In the figure, 10, steel beam; 20, rigid rod; 30, shear stud; 40, truss reinforcement; 401, upper chord reinforcement; 402, lower chord reinforcement; 403, web reinforcement; 50, connecting reinforcement; 60, welded stud. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Example: Figure 2 As shown, a composite beam with a laterally stable structure during the construction phase includes a plurality of sets of parallel steel beams 10, and truss bars 40 are arranged above the steel beams 10 for maintaining the lateral stability of the steel beams 10;
[0023] Among them, Figure 2 As shown, according to the sequence of the construction process, when the weight of the concrete floor slab and the construction load have not been fully loaded, the shear studs 30 welded at the upper flange of the steel beam 10 can be connected to the truss reinforcement 40 as a whole, and the truss reinforcement 40 and the steel beam 10 are perpendicular to each other, so the lateral stiffness of the truss reinforcement 40 can be used to increase the lateral stability of the steel beam 10;
[0024] like Figure 3 As shown, each group of truss bars 40 includes two lower chord steel bars 402 arranged at the bottom, a group of upper chord steel bars 401 is arranged above the lower chord steel bars 402, and a web bar steel bar 403 is arranged between the upper chord steel bars 401 and the lower chord steel bars 402. The truss bars 40 composed of the above three types of steel bars can provide lateral stability of the steel beam 10 during the construction stage;
[0025] Among them, Figure 3 As shown, a plurality of connecting steel bars 50 are arranged between the truss bars 40, and the spacing between each two adjacent connecting steel bars 50 is 1500 mm, and the connecting steel bars 50 are U-shaped, so that both sides of the connecting steel bars 50 are connected to the truss bars 40 by welding, and welding studs 60 are arranged between the connecting steel bars 50 and the steel beam 10, so that the connecting steel bars 50 can be kept fixed on the steel beam 10;
[0026] The diameter of the connecting steel bar 50 is 12 mm;
[0027] like Figure 1 As shown, a rigid rod 20 is arranged between the steel beams 10 in the prior art, and the rigid rod 20 is an angle steel, a channel steel or an I-beam beam, etc. The above structure for lateral stability of the composite beam during the construction stage can save more steel and reduce the construction cost compared with the prior art;
[0028] In addition, compared with the prior art, it can also save process and construction period, the connecting steel bar 50 can be directly welded on site and fixedly connected to the steel beam 10, and the overall process is relatively simple;
[0029] When using the rigid rod 20, ribs need to be added to the steel beam 10 and holes need to be drilled in the early stage of material cutting. When installing the rigid rod 20 in the later stage, it is necessary to hoist it and install high-strength bolts, which is time-consuming and labor-intensive. Therefore, in comparison, the use of connecting steel bars 50 is more convenient and easy to construct.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A composite beam having lateral stability during the construction phase, characterized in that: The invention comprises a plurality of sets of parallelly arranged steel beams (10), wherein the upper ends of the steel beams (10) are fixedly provided with truss bars (40), the truss bars (40) are arranged in a direction perpendicular to the steel beams (10), and the truss bars (40) are arranged at equal intervals according to actual stress, so as to provide lateral stability for the steel beams (10); shear bolts (30) are arranged on the upper flanges of the steel beams (10), two bolts are arranged in each row, and are arranged at equal intervals along the longitudinal direction of the steel beams (10); the steel beams (10) are also partially provided with connecting steel bars (50) in a U-shape; and the two ends of the connecting steel bars (50) are connected to the side truss bars (40) by on-site welding.
2. A composite beam with lateral stability during construction according to claim 1, characterized in that: The shear studs (30), the welding studs (60) and the steel beam (10) are fixedly connected by welding.
3. A composite beam with lateral stability during construction according to claim 2, characterized in that: Each group of truss bars (40) comprises two groups of lower chord steel bars (402) arranged at the bottom, a group of upper chord steel bars (401) arranged above the two groups of lower chord steel bars (402), and a web bar steel bar (403) is arranged between the upper chord steel bars (401) and the lower chord steel bars (402).
4. A composite beam with lateral stability during construction according to claim 3, characterized in that: The distance between each two adjacent groups of connecting steel bars (50) is 1500 mm, and the diameter of the connecting steel bars (50) is 12 mm.
5. A composite beam with lateral stability during construction according to claim 4, characterized in that: The connecting steel bars (50), the welding studs (60) and the two groups of lower chord steel bars (402) are fixedly welded, so that the upper flange of the steel beam (10) and the truss bars (40) can be connected.