CN110761488A - Wood-concrete composite beam - Google Patents
Wood-concrete composite beam Download PDFInfo
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- CN110761488A CN110761488A CN201810824059.0A CN201810824059A CN110761488A CN 110761488 A CN110761488 A CN 110761488A CN 201810824059 A CN201810824059 A CN 201810824059A CN 110761488 A CN110761488 A CN 110761488A
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- wood
- concrete
- beam portion
- concrete composite
- beam part
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
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Abstract
The application relates to building structure technical field especially relates to a wood-concrete composite beam, includes: a timber beam portion; the concrete beam part is fixedly connected with the wood beam part; the wood beam part is used for bearing tensile stress, and the concrete beam part is used for bearing compressive stress. The wood beam part and the concrete beam part are combined, and after the combination beam is installed, when the combination beam bears load, the wood beam part bears tensile stress, and the concrete beam part bears compressive stress, so that the tensile property of the wood material and the compressive property of the concrete material are well exerted, and the integral mechanical property of the combination beam is greatly improved.
Description
Technical Field
The application relates to the technical field of building structures, in particular to a wood-concrete composite beam.
Background
The traditional beam member mainly comprises a wood beam, a steel beam, a reinforced concrete beam and the like, and the traditional wood beam has poor fire resistance and limited bearing capacity and is difficult to realize large span; the steel consumption of the steel beam is large, and the rigidity of the member is small, so that the integral stability is not facilitated; traditional reinforced concrete roof beam cross sectional dimension is great with the dead weight, and ligature reinforcing bar and formwork process are complicated, and the construction cycle is long, and the cost is high, adopts the reinforced concrete roof beam, and is great to the consumption of resource and energy, and can discharge a large amount of carbon dioxide and dust in concrete production and the use, causes the destruction to natural environment.
Disclosure of Invention
The application provides a wood-concrete composite beam which is used for solving the problem of poor performance of beam members in the prior art.
The application provides a wood-concrete composite beam, includes:
a timber beam portion;
the concrete beam part is fixedly connected with the wood beam part;
the wood beam part is used for bearing tensile stress, and the concrete beam part is used for bearing compressive stress.
Further, the cross sections of the wood beam part and the concrete beam part are rectangular.
Further, the wood beam portion is formed with a connection wall, the concrete beam portion is connected with the connection wall of the wood beam portion, and the connection wall is subjected to unevenness treatment.
Further, the concrete beam comprises a connecting piece, wherein one end of the connecting piece is connected with the wood beam part, and the other end of the connecting piece is connected with the concrete beam part.
Furthermore, a positioning groove is formed in the connecting wall, one end of the connecting piece is embedded into the positioning groove, and the other end of the connecting piece penetrates through the connecting wall and is embedded into the concrete beam portion.
Furthermore, be provided with a plurality of on the connection wall the constant head tank, the connecting piece sets up to a plurality ofly, every the constant head tank in one arranged one the connecting piece.
Further, the connecting piece is T type, including the web and with the flange board that the web is connected, the web embedding in the constant head tank, the flange board embedding in the concrete beam portion.
Further, the connecting piece is glued with the wood beam part.
Further, the connecting piece is formed with a bolting hole, the bolting hole is coated with glue, and the bolting hole is at least partially embedded into the positioning groove.
Further, the bolting holes are through holes.
The technical scheme provided by the application can achieve the following beneficial effects:
compared with the prior art, the wood-concrete composite beam provided by the application has the advantages that the wood beam part and the concrete beam part are combined, and after the composite beam is installed, when the composite beam bears load, the wood beam part bears tensile stress, and the concrete beam part bears compressive stress, so that the tensile property of a wood material and the compressive property of a concrete material are better exerted, and the overall mechanical property of the composite beam is greatly improved.
In addition, the composite beam can also reduce the consumption of building steel and concrete, save resources and energy, reduce building garbage, and form a self-balancing system for absorbing and discharging carbon dioxide, thereby being beneficial to the environment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a perspective view of a composite beam provided in an embodiment of the present application;
FIG. 2 is a perspective view, partially in cross-section, of a composite beam provided in an embodiment of the present application;
FIG. 3 is a full sectional view of a composite beam provided in accordance with an embodiment of the present application;
fig. 4 is a partial cross-sectional perspective view of a wood beam portion provided in an embodiment of the present application;
fig. 5 is a perspective view of a connector provided in an embodiment of the present application.
Reference numerals:
100-wood beam portion;
110-a connecting wall;
120-mounting grooves;
200-concrete beam section;
300-a connector;
310-a web;
311-bolting holes;
320-flange plate.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
As shown in fig. 1-5, the preferred embodiment of the present application is shown.
The wood-concrete composite beam comprises a wood beam part 100 and a concrete beam part 200, wherein the wood beam part 100 is fixedly connected with the concrete beam part 200, after the composite beam is installed, the wood beam part 100 is used for bearing tensile stress, and the concrete beam part 200 is used for bearing compressive stress. Because the wood beam part 100 and the concrete beam part 200 are combined, and after the combination beam is installed, when the combination beam bears load, the wood beam part 100 bears tensile stress, and the concrete beam part 200 bears compressive stress, the structure well exerts the tensile property of the wood material and the compressive property of the concrete material, so that the overall mechanical property of the combination beam is greatly improved.
In addition, the composite beam can also reduce the consumption of building steel and concrete, save resources and energy, reduce building garbage, and form a self-balancing system for absorbing and discharging carbon dioxide, thereby being beneficial to the environment.
It should be noted that the above-mentioned wood beam portion 100 for bearing tensile stress and the concrete beam portion 200 for bearing compressive stress are only ideal conditions, and in practical cases, the wood beam portion 100 can bear smaller compressive stress due to manufacturing errors and assembly errors, or the concrete beam portion 200 can bear smaller tensile stress, which should not be considered to depart from the scope of the present application.
The main structural shapes of the wood beam portion 100 and the concrete beam portion 200 are not limited, so the shape and the structure of the two may be any form, and only the wood beam portion 100 bears the tensile stress and the concrete beam portion 200 bears the compressive stress after the composite beam bears the load, and the arrangement position of the composite beam may be any, and the specific structures of the wood beam portion 100 and the concrete beam portion 200 may be changed by the arrangement position and the bearing condition of the composite beam. For example, as shown in fig. 1, when the composite girder is arranged in a lateral direction with a load directed vertically downward, it is required that the concrete beam section 200 is located at the upper end of the wood beam section 100, so that the bending moment generated from the composite girder after receiving the load causes the concrete beam section 200 to be compressed and the wood beam section 100 to be tensioned. Specifically, the grain-following direction of the wood beam portion 100 may be the longitudinal direction thereof, which may enhance the tensile strength of the wood beam portion 100.
Preferably, the cross sections of the wood beam portion 100 and the concrete beam portion 200 are rectangular, and when the wood beam portion 100 and the concrete beam portion 200 are regular rectangles, the calculation of the stress of the two becomes simpler, which makes the structural design process of the two easier, and the structure with the rectangular cross section better conforms to the shape of the beam member. It should be noted that the above-mentioned cross section should be understood as a cross section in a direction perpendicular to the extending direction of the wood beam portion 100 or the concrete beam portion 200.
In one embodiment, the wood beam portion 100 is formed with a connecting wall 110, the concrete beam portion 200 is connected to the connecting wall 110 of the wood beam portion 100, and the connecting wall 110 is subjected to an unevenness treatment, which may be a roughening treatment or other processes for processing the connecting wall 110 into an uneven surface wall, such as grooving or processing a curved surface on the connecting wall 110. It should be understood that the above description does not limit the processing of the connection wall 110, but limits the final state of the connection wall 110 after the unevenness treatment. Since the concrete beam section 200 is generally cast on the connecting wall 110 of the wood beam section 100 by building a formwork, the uneven connecting wall 110 may allow the concrete beam section 200 to be more closely connected to the connecting wall 110. It should be noted that the above does not imply that the connecting wall 110 is planar, and it may specifically be a set composed of multiple faces, such as a set of all surfaces of a step structure or a set of all surfaces of a groove. Preferably, as shown in fig. 2, the connection wall 110 may be planar, and the cross-sections of the concrete beam section 200 and the wood beam section 100 in a direction parallel to the connection wall 110 may be set to be equal in size, so that the transition at the connection of the wood beam section 100 and the concrete beam section 200 is smoother, and stress concentration is effectively prevented.
In order to enable the wood beam portion 100 and the concrete beam portion 200 to be connected more closely, the composite beam further includes a connecting member 300, one end of the connecting member 300 is connected with the wood beam portion 100, and the other end is connected with the concrete beam portion 200, so that the problem of connection failure of the wood beam portion 100 and the concrete beam portion 200 when bearing stress and deformation in different directions is avoided. The shape and material of the connecting member 300 are not limited herein, and the connecting manner thereof is not limited, and it should be noted that any structure for connecting the wood beam portion 100 and the concrete beam portion 200 can be understood as the connecting member 300 in the present application.
Specifically, in order to enable the connecting member 300 to be better connected with the wood beam portion 100, a positioning groove is formed on the connecting wall 110, one end of the connecting member 300 is embedded in the positioning groove, so that the connecting member 300 can go deep into the wood beam portion 100, the other end of the connecting member 300 passes through the connecting wall 110 and is embedded in the concrete beam portion 200, and the connecting member 300 passes through the connecting wall 110 so that the connecting member can better resist the shearing force generated when the wood beam portion 100 and the concrete beam portion 200 bear different stresses, so that the connection between the wood beam portion 100 and the concrete beam portion 200 is more reliable.
Preferably, be provided with a plurality of constant head tanks on the connecting wall 110, connecting piece 300 sets up to a plurality of, and has arranged one connecting piece 300 in every constant head tank one by one, thus, connecting piece 300 arrange can arrange according to the concrete atress position and the atress size of combination beam, the place that the atress of combination beam is big, can arrange connecting piece 300 densely, receive the place that the shearing force is little, connecting piece 300 can arrange sparsely, make the structure of combination beam more reasonable, the internal stress after bearing the load is more even, the life of combination beam has been prolonged, the quantity of arranging of connecting piece 300 has also been saved simultaneously, construction cycle has been shortened. Of course, in another embodiment, in order to facilitate the processing of the mounting groove 120, a long mounting groove 120 may be formed on the connecting wall 110, and then all the connecting members 300 are disposed at corresponding positions in the mounting groove 120.
In one embodiment, the connecting member 300 is T-shaped, and includes a web 310 and a flange plate 320 connected to the web 310, the web 310 is embedded in the positioning groove, the flange plate 320 is embedded in the concrete beam section 200, and after the flange plate 320 is embedded in the concrete beam section 200, the connecting member 300 and the concrete beam section 200 can form a closer whole, so that the connection between the connecting member 300 and the concrete beam section 200 is more reliable.
In order to make the connection between the connecting member 300 and the wood beam portion 100 more reliable, it is preferable that the connecting member 300 is glued to the wood beam portion 100, the glue can both connect the connecting member 300 to the mounting groove 120 and fill up the gap in the mounting groove 120, so that the internal structure of the wood beam portion 100 is more full, in another embodiment, the connecting member 300 can also be connected to the mounting groove 120 in a manner similar to interference fit, it is preferable that the mounting groove 120 is made in a shape that the gap gradually decreases from outside to inside, and then the connecting member 300 is tightly clamped in the mounting groove 120 to achieve tight connection with the wood beam portion 100.
When the connecting member 300 is glued to the wood beam portion 100, it is further configured that the connecting member 300 is formed with a bolting hole 311, glue is coated in the bolting hole 311, and at least part of the bolting hole 311 is embedded in the positioning groove, so that after the glue in the bolting hole 311 hardens and agglomerates, the glue is blocked in the bolting hole 311, so that the connecting member 300 is more difficult to separate from the mounting groove 120, preferably, the bolting hole 311 may be a through hole, and the structure of the through hole enables the connecting member 300 to be more firmly connected by the agglomerated glue without coating both sides when the glue is coated on the connecting member 300. Of course, in another embodiment, the bolt holes 311 may be countersunk. Specifically, the bolting hole 311 may be one or more, and the bolting hole 311 may be entirely embedded in the positioning groove or partially embedded in the mounting groove 120, which may enhance the reliability of the connection between the connector 300 and the mounting groove 120, so the specific structure of the bolting hole 311 is not limited herein.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A wood-concrete composite beam, comprising:
a timber beam portion;
the concrete beam part is fixedly connected with the wood beam part;
the wood beam part is used for bearing tensile stress, and the concrete beam part is used for bearing compressive stress.
2. The wood-concrete composite beam according to claim 1, wherein the wood beam section and the concrete beam section each have a rectangular cross section.
3. The wood-concrete composite beam according to claim 1, wherein the wood beam section is formed with a connection wall, the concrete beam section is connected to the connection wall of the wood beam section, and the connection wall is uneven.
4. The wood-concrete composite beam according to claim 3, further comprising a connecting member having one end connected to the wood beam portion and the other end connected to the concrete beam portion.
5. The wood-concrete composite beam according to claim 4, wherein the connecting wall is formed with a positioning groove, one end of the connecting member is inserted into the positioning groove, and the other end thereof passes through the connecting wall and is inserted into the concrete beam portion.
6. The wood-concrete composite beam according to claim 5, wherein a plurality of said positioning grooves are provided in said connecting wall, and a plurality of said connecting members are provided, one for each of said positioning grooves.
7. The wood-concrete composite beam according to claim 5, wherein the connecting member is T-shaped, and comprises a web plate and a flange plate connected with the web plate, the web plate is embedded in the positioning groove, and the flange plate is embedded in the concrete beam portion.
8. The wood-concrete composite beam according to claim 5, wherein the connector is glued to the wood beam portion.
9. The wood-concrete composite beam according to claim 8, wherein the connector is formed with a bolting hole, which is coated with an adhesive, and is at least partially inserted into the positioning groove.
10. The wood-concrete composite beam according to claim 9, wherein the bolting holes are through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824059.0A CN110761488A (en) | 2018-07-25 | 2018-07-25 | Wood-concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824059.0A CN110761488A (en) | 2018-07-25 | 2018-07-25 | Wood-concrete composite beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110761488A true CN110761488A (en) | 2020-02-07 |
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ID=69327012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810824059.0A Pending CN110761488A (en) | 2018-07-25 | 2018-07-25 | Wood-concrete composite beam |
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| Country | Link |
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| CN (1) | CN110761488A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047495A (en) * | 2021-04-26 | 2021-06-29 | 上海市建筑科学研究院有限公司 | Assembled wood-concrete combined floor system |
-
2018
- 2018-07-25 CN CN201810824059.0A patent/CN110761488A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047495A (en) * | 2021-04-26 | 2021-06-29 | 上海市建筑科学研究院有限公司 | Assembled wood-concrete combined floor system |
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