Integrated structure for reinforcing wood beam through bent steel plate
By using cross-distributed integrated bent steel plates on wooden beams for reinforcement, the problems of complex construction and limited reinforcement effects of traditional reinforcement methods are solved, and more efficient bearing capacity and stiffness are achieved, while construction is convenient and environmentally friendly.
Patent Information
- Application Number
- CN202421643101.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-12
AI Technical Summary
While the traditional wooden beam reinforcement method improves the bearing capacity and stiffness, the construction is complex and the reinforcement effect is limited, which is prone to brittle tension damage.
A pair of integrated bent steel plates with cross distribution are adopted, and the reinforced steel plates extend from the bottom of the wooden beam to the side of the beam, forming an X-shaped cross distribution, and are fixedly connected to the wooden beam through fasteners to avoid the use of adhesive.
The reinforcement effect has been significantly improved, the damage form of wooden beams has been improved, the bending effect has been formed, and the tensile performance of the steel plate has been fully utilized, making it convenient to construct and economical and environmentally friendly.
Smart Images
Figure CN222797141U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a structure of an integrated bent steel plate reinforcing a wooden beam. Background Art
[0002] When a wooden beam is bent, brittle tensile failure often occurs at the bottom of the beam. The entire failure process is very short and there is no obvious sign. The wood at the bottom of the beam is pulled apart along the grain direction and then splits. At this time, the compressive strength of the wood has not been fully utilized. Existing wooden beams in actual projects often crack due to repeated stress, changes in moisture content and other factors, resulting in a decrease in bearing capacity and stiffness. In order to ensure structural safety, they need to be reinforced to improve their bearing capacity and stiffness, and to change their failure mode from brittle failure to ductile failure.
[0003] When reinforcing traditional wooden beams, the method of pasting steel plates is often used. The steel plates and wooden beams form a combined structure, which changes the stress state of the beams, achieving the effect of wood being compressed and steel plates being pulled, thereby improving their bearing capacity. The addition of steel plates also reduces the tensile stress of adjacent plywood, reduces the impact of wood knots, and improves the failure form of beams. Compared with steel bars with the same function, the use of steel plates does not require grooving of the beams, ensuring the integrity of the wooden beams, and does not require additional anchoring devices, making construction more convenient.
[0004] However, the traditional method of sticking steel plates to wooden beams is to directly stick the steel plates to the bottom of the wooden beams with glue. Although this method can improve its bearing capacity, it is easy to debond in the later stage of loading, and the increase in the bearing capacity of the wooden beams is limited. The failure mode is mostly brittle tensile failure. If the steel plates are reinforced with screws while sticking with glue, this method requires multiple holes to be drilled in the steel plates, which is more troublesome to construct, and weakens the steel plates and the bottom of the wooden beams, especially the bottom of the wooden beams. After the fibers are damaged, the tensile capacity of the wood is greatly reduced, which reduces the bending bearing capacity of the wooden beams themselves and reduces the reinforcement effect. Utility Model Content
[0005] The utility model makes improvements on the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the utility model is to provide a structure of reinforcing wooden beams with an integrated bent steel plate, which has a reasonable design, is not only convenient to process, but also improves the reinforcement effect.
[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a structure of an integrated bent steel plate reinforced wooden beam, including a pair of cross-distributed reinforcing steel plates, each of which is bent and formed as an integrated unit, and the reinforcing steel plate includes a bottom reinforcement section that is close to the bottom of the wooden beam, and both ends of the bottom reinforcement section are bent and formed to form a beam side reinforcement section, and the beam side reinforcement sections connected to the two ends of the bottom reinforcement section are respectively close to the two beam sides of the wooden beam, and the beam side reinforcement sections are fixedly connected to the wooden beam at the ends via fasteners.
[0007] Furthermore, a pair of beam bottom reinforcement sections of the reinforcing steel plates are distributed in an X-shaped cross at the bottom of the wooden beam and are symmetrically arranged.
[0008] Furthermore, the beam side reinforcement sections connected to the two ends of the beam bottom reinforcement section extend to the beam ends on both sides of the wooden beam respectively, and the beam side reinforcement sections are bent and formed to form beam end reinforcement sections, and the beam end reinforcement sections are close to the end surface of the wooden beam.
[0009] Furthermore, the beam end reinforcement section is also fixedly connected to the wooden beam via fasteners.
[0010] Furthermore, in each reinforced steel plate, the bottom reinforcement section of the beam is inclined relative to the bottom of the wooden beam, and the side reinforcement section of the beam is inclined relative to the side of the wooden beam, which is opposite to the inclination direction of the side reinforcement section of the beam connected at both ends of the bottom reinforcement section of the beam.
[0011] Compared with the prior art, the utility model has the following effects: the utility model has a reasonable structural design, and utilizes two cross-distributed integrated bent and formed reinforcement steel plates to extend from the bottom of the beam to the side of the beam, wrapping the wooden beam to form a tensile and bending effect, giving full play to the tensile properties of the steel plate, improving the failure mode, and effectively improving the reinforcement effect. The entire reinforcement process does not require glue coating, and the construction is convenient, economical and environmentally friendly. The damage to the beam body is small, and the stress-bearing performance of the beam body itself is not affected. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;
[0013] Figure 2 It is a schematic diagram of the unfolded state of an embodiment of the utility model.
[0014] In the figure:
[0015] 1-reinforcement steel plate; 2-wooden beam; 3-beam bottom reinforcement section; 4-beam side reinforcement section; 5-beam end reinforcement section; 6-fastener; 7-beam side; 8-beam bottom; 9-beam end; 10-unbent reinforcement steel plate. DETAILED DESCRIPTION
[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0018] like Figures 1-2 As shown, the utility model is a structure of an integrated bent steel plate reinforcing a wooden beam, comprising a pair of reinforcing steel plates 1 distributed crosswise, each reinforcing steel plate 1 is integrally bent and formed, the pair of reinforcing steel plates 1 extend from the bottom of the wooden beam 2 to the side of the wooden beam and wrap the wooden beam 2, the reinforcing steel plates 1 include a beam bottom reinforcement section 3 close to the bottom of the wooden beam 2, the beam bottom reinforcement section 3 is inclined, both ends of the beam bottom reinforcement section 3 are bent upward 90 degrees to form a beam side reinforcement section 4, the beam side reinforcement sections 4 connected to the two ends of the beam bottom reinforcement section 3 are respectively close to the two beam sides of the wooden beam 2 that are opposite to each other, and each beam side reinforcement section 4 is fixedly connected to the wooden beam 2 at the end (that is, the end away from the beam bottom reinforcement section) via a fastener 6.
[0019] In this embodiment, the bottom beam reinforcement sections 3 of a pair of reinforcement steel plates 1 are distributed in an X-shaped cross at the bottom of the wooden beam 2 and are symmetrically arranged.
[0020] In this embodiment, the beam side reinforcement sections 4 connected to the two ends of the beam bottom reinforcement section 3 extend to the two opposite ends of the wood beam 2, and each end of the beam side reinforcement section 4 away from the beam bottom reinforcement section 3 is bent 90 degrees to form a beam end reinforcement section 5, and the beam end reinforcement section 5 is in close contact with the end surface of the wood beam 2. The two reinforcement steel plates are arranged in an X-shaped manner to wrap the wood beam. This arrangement is similar to a string beam, which can make full use of the tensile properties of the steel parts, effectively reduce the deformation of the wood beam, and can support the wood beam, effectively improve the brittle failure characteristics of the wood beam, and make the wood beam bear better.
[0021] In this embodiment, when the bearing capacity of the beam is large and the beam end is exposed, the beam end reinforcement section 5 is also fixedly connected to the end face of the wooden beam 2 through the fastener 6, that is, the fasteners are set at both the beam end and the beam side, otherwise only the fasteners are set at the beam side. Preferably, the fasteners are fixed bolts. Since bolts are only set at the less stressed parts for anchoring, the damage to the beam body is small, the stress performance of the beam body itself is not affected, and the integrity of the wooden beam is intact.
[0022] In this embodiment, in each reinforced steel plate 1, the bottom reinforcement section 3 is inclined relative to the bottom of the wooden beam 2, and the side reinforcement section 4 is inclined relative to the side of the wooden beam 2, which is opposite to the inclination direction of the side reinforcement section 4 connected at both ends of the bottom reinforcement section 3.
[0023] In this embodiment, in a pair of reinforcing steel plates 1, the beam end reinforcing section 5 of one reinforcing steel plate 1 is directly opposite to the beam end reinforcing section 5 of the other reinforcing steel plate 1 at the front and rear positions of the end of the wood beam 2. The beam side reinforcing sections 4 of the pair of reinforcing steel plates 1 on the same side are distributed on the left and right and have opposite inclination directions.
[0024] In this embodiment, in each reinforced steel plate, the beam side reinforcement section, the beam bottom reinforcement section and the beam end reinforcement section are integrally bent and formed, and prefabricated in the factory, which is convenient to process and beautiful in appearance. In addition, the entire construction process does not require the use of glue, which is economical and environmentally friendly and suitable for reinforcement and reconstruction projects. It should be noted that the reinforced steel plate can be a steel plate with a smaller width and a thinner thickness, and of course it can also be directly replaced with a steel belt.
[0025] In this embodiment, during construction: (1) according to the size and strength requirements of the wood beam, the basic parameters such as the strength grade, width and thickness of the reinforcing steel plate are determined through force analysis; (2) the side and bottom surface development diagrams of the wood beam are drawn, the reinforcing steel plate is positioned and arranged, and the bending position is preset, such as Figure 2 That is, a reinforcing steel plate is arranged obliquely at the bottom of the wooden beam, and the reinforcing steel plate is bent and pulled to the other side of the bottom of the beam. The reinforcement method of the beam on the other side is the same; (3) Bolts are fixed at the ends of the wooden beams. When the bearing capacity of the beam is large and the beam end is exposed, bolts can be set at both the beam end and the beam side. Otherwise, bolts can be set only on the beam side.
[0026] The advantages of the utility model are:
[0027] (1) The reinforced steel plate is bent in an integrated manner to maintain the integrity of the steel plate and facilitate processing;
[0028] (2) The integrated bent reinforcement steel plate extends from the bottom of the beam to the side and end of the beam, wrapping the wooden beam, similar to a string beam, which can form a tension-bending effect, give full play to the tensile properties of the steel plate, improve the failure mode, and enhance the reinforcement effect;
[0029] (3) Bolts are only installed at the parts of the beam end where the stress is relatively small, which causes less damage to the beam body and does not affect the stress-bearing performance of the beam body itself, thus keeping the integrity of the wooden beam intact;
[0030] (4) The entire reinforcement process does not require gluing, which makes construction convenient, economical and environmentally friendly.
[0031] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).
[0032] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.
[0033] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.
[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.
Claims
1. A structure of an integrated bent steel plate reinforced wooden beam, characterized in that: It includes a pair of cross-distributed reinforcement steel plates, each of which is bent and formed in an integrated manner. The reinforcement steel plates include a bottom reinforcement section that is close to the bottom of the wooden beam. Both ends of the bottom reinforcement section are bent and formed to form beam side reinforcement sections. The beam side reinforcement sections connected to the two ends of the bottom reinforcement section are respectively close to the two beam sides of the wooden beam. The beam side reinforcement sections are fixedly connected to the wooden beam at the ends via fasteners.
2. The structure of an integrated bent steel plate reinforced wooden beam according to claim 1, characterized in that: A pair of beam bottom reinforcement sections of the reinforcement steel plates are distributed in an X-shaped cross at the bottom of the wooden beam and are symmetrically arranged.
3. The structure of an integrated bent steel plate reinforced wooden beam according to claim 1, characterized in that: The beam side reinforcement sections connected to the two ends of the beam bottom reinforcement section extend to the beam ends on both sides of the wood beam respectively. The beam side reinforcement sections are bent and formed to form beam end reinforcement sections, and the beam end reinforcement sections are close to the end surface of the wood beam.
4. The structure of an integrated bent steel plate reinforced wooden beam according to claim 3, characterized in that: The beam end reinforcement section is also fixedly connected to the wooden beam via fasteners.
5. The structure of an integrated bent steel plate reinforced wooden beam according to claim 1, characterized in that: In each reinforced steel plate, the beam bottom reinforcement section is inclined relative to the beam bottom, and the beam side reinforcement section is inclined relative to the beam side of the beam, in an opposite direction to the inclination direction of the beam side reinforcement section connected at both ends of the beam bottom reinforcement section.