CN113982185B - Parallel wood truss structure of dowel welding - Google Patents
Parallel wood truss structure of dowel welding Download PDFInfo
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- CN113982185B CN113982185B CN202111469106.2A CN202111469106A CN113982185B CN 113982185 B CN113982185 B CN 113982185B CN 202111469106 A CN202111469106 A CN 202111469106A CN 113982185 B CN113982185 B CN 113982185B
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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
- E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
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Abstract
The invention relates to a parallel wood truss structure welded by wood nails. The structure comprises an upper chord and a lower chord which are arranged in parallel at intervals, wherein the end head of the upper chord is connected with the corresponding end head of the lower chord through a vertical connecting rod, two rows of web member assemblies are arranged between the upper chord and the lower chord, each row of web member assemblies comprises a plurality of special-shaped web members which are arranged side by side, the right end point of an oval special-shaped web member is connected with the left end point of an adjacent special-shaped web member, the bottoms of the special-shaped web member arc sections which are arranged on the upper row are abutted against the tops of the special-shaped web member arc sections which are arranged on the lower row, the tops of the special-shaped web member arc sections which are arranged on the upper row are abutted against the surface of the upper chord, and the bottoms of the special-shaped web member arc sections which are arranged on the lower row are abutted against the surface of the lower chord.
Description
Technical Field
The invention belongs to the technical field of wood building structures, and particularly relates to a wood nail welding parallel wood truss structure.
Background
In a wood structure building, most floor slabs are built by joist beams. The joist can be made of solid wood sawn timber, I-beam, glued wood or parallel chord wood truss. The use of the solid wood sawn timber joist is limited by the span of the joist. When the I-beam joists and the laminated wood joists are constructed on floor pipelines, holes need to be formed in the belly of the joists, and the number and the positions of the holes obviously affect the bearing capacity of the joists. The parallel chord wood truss joists are popular in recent years due to the convenience of prefabrication and construction and no influence on the passing of pipelines.
The parallel chord wood truss joists are used as flexural members, and the use safety of the floor slab can be ensured only when two reference conditions of bearing capacity and deformation under the floor slab load combination condition are met during design and use. In practice, however, it has been found that many consumers complain of floors using parallel-chord wood truss joists that suffer from poor vibration comfort, although this does not affect the structural safety of the floor.
The vibration performance of the floor is generally evaluated by indexes such as static deflection and vibration response of the floor. The structural factors influencing the indexes are mainly the rigidity of the floor slab in the directions parallel to the joist and perpendicular to the joist. The rigidity of the floor slab parallel to the joist direction can be improved mainly by reasonably designing the wood truss. However, the problem cannot be basically solved by the existing wood truss made of the standard materials, and the problem of uncomfortable vibration of the floor still exists.
Disclosure of Invention
The invention provides a parallel wood truss structure welded by wood nails, aiming at solving the technical problems that the existing parallel chord wood truss structure has weaker pressure-bearing capacity and larger vibration amplitude and overcoming the defects.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a parallel wooden truss structure of nail welding, including last chord member and the lower chord member that parallel interval set up, the last chord member end corresponds the end with the lower chord member and links to each other through vertical connecting rod, it is provided with two rows of web member subassemblies to be located between last chord member and the lower chord member, each row of web member subassembly is including a plurality of special-shaped web members that set up side by side, oval-shaped special-shaped web member right-hand member point is connected with adjacent special-shaped web member left end point, the special-shaped web member segmental arc bottom that is located to arrange the setting is contradicted and is being located the special-shaped web member segmental arc top that lower row set up, the special-shaped web member segmental arc top that is located to arrange the setting is contradicted on the upper chord member surface, the special-shaped web member segmental arc bottom that is located to arrange the setting is contradicted on the lower chord member surface.
As a preferable scheme, inverted V-shaped rods are arranged in the specially-shaped web members arranged in the upper row, tips of the V-shaped rods abut against the inner sides of the tops of the corresponding specially-shaped web members, upright V-shaped rods are arranged in the specially-shaped web members arranged in the lower row, and tips of the V-shaped rods abut against the inner sides of the bottoms of the corresponding specially-shaped web members.
Preferably, a middle web member is arranged between the end head of each different web member positioned on the upper row and the corresponding end head of each different web member positioned on the lower row.
As a preferred scheme, vertical web members are arranged between adjacent special-shaped web members, the upper end of each vertical web member is connected with the upper chord member, the lower end of each vertical web member is connected with the lower chord member, and each end point of each special-shaped web member is connected with the corresponding vertical web member.
As the preferred scheme, the root of the vertical web member is integrally provided with a supporting stress member, the supporting stress member is in the shape of a right trapezoid, the bottom edge of the supporting stress member is connected with the side surface of the corresponding vertical web member, and the right-angle edge of the supporting stress member is connected with the corresponding upper chord member or lower chord member.
As a preferred scheme, the top of the special-shaped web member is welded with the upper chord member through a wooden nail, and the bottom of the special-shaped web member is welded with the lower chord member through a wooden nail.
Compared with the prior art, the invention has the beneficial effects that: when the upper chord receives vertical decurrent pressure, the dysmorphism web member top that is located the row of arranging is at first atress, the arc section tangential direction along the dysmorphism web member of power decomposes, the dysmorphism web member that is located the row of arranging preferentially begins to warp, thereby make the power that transmits on the lower row of dysmorphism web member and then can reduce, and the lower row of dysmorphism web member can provide elastic support to the special-shaped web member of the row of arranging after warping, improve the atress performance of overall structure, improve the antivibration effect of overall structure, this structure can apply to industrial production, and has very strong practicality.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
FIG. 3 is a schematic structural diagram of embodiment 3 of the present invention.
FIG. 4 is a schematic structural diagram of embodiment 4 of the present invention.
FIG. 5 is a schematic structural diagram of embodiment 5 of the present invention.
In the figure: 1 upper chord member, 2 lower chord member, 3 special-shaped web members, 4V-shaped members, 5 middle web members, 6 vertical web members,
and 7, supporting the stress element.
Detailed Description
The technical solutions of the present application are further described with reference to the accompanying drawings and embodiments.
Example 1:
as shown in fig. 1, for a parallel wood truss structure of dowel welding, including last chord member and the lower chord member that parallel interval set up, the top chord member end corresponds the end with the lower chord member and links to each other through vertical connecting rod, it is provided with two rows of web member subassemblies to lie between last chord member and the lower chord member, each row of web member subassembly is including a plurality of dysmorphism web members that set up side by side, oval-shaped dysmorphism web member right-hand member point is connected with adjacent dysmorphism web member left end point, the dysmorphism web member segmental arc bottom that lies in the upper row of setting is contradicted at the dysmorphism web member segmental top that lies in the lower row of setting, the dysmorphism web member segmental arc top that lies in the upper row of setting is contradicted on last chord member surface, the dysmorphism web member segmental arc bottom that lies in the lower row of setting is contradicted on the lower chord member surface.
When the upper chord receives vertical decurrent pressure, the dysmorphism web member top that is located to arrange at first atress, the arc section tangential direction of special-shaped web member is decomposed to power edge, the special-shaped web member that is located to arrange preferentially begins to warp to make the power that transmits on the special-shaped web member of arranging down and then can reduce, and the special-shaped web member of arranging down can provide elastic support to the special-shaped web member of arranging up after warping, improve the atress performance of whole structure, improve the antivibration effect of whole structure.
Example 2:
as shown in fig. 2, the parallel wood truss structure for wood nail welding comprises an upper chord member and a lower chord member which are arranged at a parallel interval, wherein the end head of the upper chord member is connected with the corresponding end head of the lower chord member through a vertical connecting rod, two rows of web member components are arranged between the upper chord member and the lower chord member, each row of web member components comprises a plurality of special-shaped web members which are arranged side by side, the right end point of the oval special-shaped web member is connected with the left end point of the adjacent special-shaped web member, the bottoms of the special-shaped web members arc sections arranged on the upper row are butted at the tops of the special-shaped web members arc sections arranged on the lower row, the tops of the special-shaped web members arc sections arranged on the upper row are butted on the surface of the upper chord member, and the bottoms of the special-shaped web members arc sections arranged on the lower row are butted on the surface of the lower chord member. The V-shaped rods are arranged in the upper row of the special-shaped web members and are inverted, the tips of the V-shaped rods abut against the inner sides of the tops of the corresponding special-shaped web members, upright V-shaped rods are arranged in the lower row of the special-shaped web members, and the tips of the V-shaped rods abut against the inner sides of the bottoms of the corresponding special-shaped web members.
When the upper chord member receives vertical decurrent pressure, the dysmorphism web member top that is located the row of arranging is at first atress, the power is decomposed along the segmental arc tangential direction of dysmorphism web member, the dysmorphism web member that is located the row of arranging preferentially begins to warp, the V type pole of invering at the deformation in-process can produce the supporting role to the dysmorphism web member of the row of arranging, the deformation of the special-shaped web member of the row of suppressing, carry out the anti-support to the pressure of applying, most pressure has been offset, thereby make the power of transmitting on the lower row of special-shaped web member further can reduce, and upright V type pole produces the supporting role to the special-shaped web member of the lower row, make row of special-shaped web member and the lower row of special-shaped web member pressure each other reduce, make the radial deformation minimum of overall structure, the stability of whole device has greatly been improved.
Example 3:
as shown in fig. 3, for a parallel wood truss structure of dowel welding, including last chord member and the lower chord member that parallel interval set up, the last chord member end corresponds the end with the lower chord member and links to each other through vertical connecting rod, it is provided with two rows of web member subassemblies to lie between last chord member and the lower chord member, each row of web member subassembly is including a plurality of dysmorphism web members that set up side by side, oval-shaped dysmorphism web member right-hand member point is connected with adjacent dysmorphism web member left end point, the dysmorphism web member segmental arc bottom that lies in the upper row of setting is contradicted at the dysmorphism web member segmental top that lies in the lower row of setting, the dysmorphism web member segmental arc top that lies in the upper row of setting is contradicted on last chord member surface, the dysmorphism web member segmental arc bottom that lies in the lower row of setting is contradicted on the lower chord member surface. The V-shaped rods are arranged in the upper row of the special-shaped web members and are inverted, the tips of the V-shaped rods abut against the inner sides of the tops of the corresponding special-shaped web members, upright V-shaped rods are arranged in the lower row of the special-shaped web members, and the tips of the V-shaped rods abut against the inner sides of the bottoms of the corresponding special-shaped web members. And a middle web member is arranged between the end head of each different web member positioned on the upper row and the corresponding end head of each different web member positioned on the lower row.
When the upper chord member is stressed vertically downwards, the top of the special-shaped web member on the upper row is stressed firstly, the force is decomposed along the tangential direction of the arc section of the special-shaped web member, the special-shaped web member on the upper row begins to deform preferentially, the V-shaped web member inverted in the deformation process can support the special-shaped web member on the upper row, the deformation of the special-shaped web member on the upper row is inhibited, the applied pressure is supported reversely, most of the pressure is offset, the force transmitted to the lower row of the special-shaped web member can be further reduced, the upright V-shaped web member can support the lower row of the special-shaped web member, the pressure between the upper row of the special-shaped web member and the lower row of the special-shaped web member is reduced, the radial deformation of the whole structure is extremely small, the radial displacement of the ends of the upper row of the special-shaped web member and the lower row of the special-shaped web member under the compression state is reduced due to the arrangement of the rigid middle web member, and the stability of the whole device is further improved.
Example 4:
as shown in fig. 4, the parallel wood truss structure for wood nail welding comprises an upper chord member and a lower chord member which are arranged at a parallel interval, wherein the end head of the upper chord member is connected with the corresponding end head of the lower chord member through a vertical connecting rod, two rows of web member components are arranged between the upper chord member and the lower chord member, each row of web member components comprises a plurality of special-shaped web members which are arranged side by side, the right end point of the oval special-shaped web member is connected with the left end point of the adjacent special-shaped web member, the bottoms of the special-shaped web members arc sections arranged on the upper row are butted at the tops of the special-shaped web members arc sections arranged on the lower row, the tops of the special-shaped web members arc sections arranged on the upper row are butted on the surface of the upper chord member, and the bottoms of the special-shaped web members arc sections arranged on the lower row are butted on the surface of the lower chord member. The V-shaped rods are arranged in the upper row of the special-shaped web members and are inverted, the tips of the V-shaped rods abut against the inner sides of the tops of the corresponding special-shaped web members, upright V-shaped rods are arranged in the lower row of the special-shaped web members, and the tips of the V-shaped rods abut against the inner sides of the bottoms of the corresponding special-shaped web members. And a middle web member is arranged between the end head of each different web member positioned on the upper row and the corresponding end head of each different web member positioned on the lower row. Vertical web members are arranged between adjacent special-shaped web members, the upper ends of the vertical web members are connected with the upper chord members, the lower ends of the vertical web members are connected with the lower chord members, and each end point of each special-shaped web member is connected with the corresponding vertical web member.
When the upper chord member is stressed vertically downwards, the top of the special-shaped web member on the upper row is stressed firstly, force is decomposed along the tangential direction of an arc section of the special-shaped web member, the special-shaped web member on the upper row begins to deform preferentially, the inverted V-shaped web member in the deformation process can support the special-shaped web member on the upper row, deformation of the special-shaped web member on the upper row is inhibited, applied pressure is supported reversely, most pressure is offset, force transmitted to the lower row of the special-shaped web member can be further reduced, the upright V-shaped web member can support the lower row of the special-shaped web member, pressure between the upper row of the special-shaped web member and the lower row of the special-shaped web member is reduced, radial deformation of the whole structure is extremely small, radial displacement of the ends of the upper row of the special-shaped web member and the lower row of the special-shaped web member under the compression state is reduced due to the arrangement of the rigid middle web member, the middle web member extends to the upper chord member and the lower chord member, the vertical web member is formed, the rigidity of the vertical web member is utilized, the common action of the upper chord member and the lower chord member is increased, the rigidity of the structure is improved, and the anti-vibration effect of the whole structure is improved.
Example 5:
as shown in fig. 5, the parallel wood truss structure for wood nail welding comprises an upper chord member and a lower chord member which are arranged at a parallel interval, wherein the end head of the upper chord member is connected with the corresponding end head of the lower chord member through a vertical connecting rod, two rows of web member components are arranged between the upper chord member and the lower chord member, each row of web member components comprises a plurality of special-shaped web members which are arranged side by side, the right end point of the oval special-shaped web member is connected with the left end point of the adjacent special-shaped web member, the bottoms of the special-shaped web members arc sections arranged on the upper row are butted at the tops of the special-shaped web members arc sections arranged on the lower row, the tops of the special-shaped web members arc sections arranged on the upper row are butted on the surface of the upper chord member, and the bottoms of the special-shaped web members arc sections arranged on the lower row are butted on the surface of the lower chord member. The V-shaped rods are arranged in the upper row of the special-shaped web members and are inverted, the tips of the V-shaped rods abut against the inner sides of the tops of the corresponding special-shaped web members, upright V-shaped rods are arranged in the lower row of the special-shaped web members, and the tips of the V-shaped rods abut against the inner sides of the bottoms of the corresponding special-shaped web members. And a middle web member is arranged between the end head of each different web member positioned on the upper row and the corresponding end head of each different web member positioned on the lower row. Vertical web members are arranged between adjacent special-shaped web members, the upper ends of the vertical web members are connected with the upper chord members, the lower ends of the vertical web members are connected with the lower chord members, and each end point of each special-shaped web member is connected with the corresponding vertical web member. Erect web member root an organic whole and be provided with the support atress piece, it is right trapezoid shape setting to support the atress piece, support atress piece base and be connected with the perpendicular web member side that corresponds, support atress piece right-angle side and be connected with corresponding upper chord or lower chord.
When the upper chord member is stressed vertically downwards, the top of the special-shaped web member on the upper row is stressed firstly, the force is decomposed along the tangential direction of the arc section of the special-shaped web member, the special-shaped web member on the upper row begins to deform preferentially, the inverted V-shaped web member can support the special-shaped web member on the upper row in the deformation process, the deformation of the special-shaped web member on the upper row is inhibited, the applied pressure is supported reversely, most pressure is offset, the force transmitted to the special-shaped web member on the lower row can be further reduced, the upright V-shaped web member can support the special-shaped web member on the lower row, the pressure between the special-shaped web member on the upper row and the special-shaped web member on the lower row is reduced, the radial displacement of the ends of the special-shaped web member on the upper row and the special-shaped web member on the lower row in a compressed state is reduced, the middle web member extends to the upper chord member and the lower chord member to form the vertical web member, the rigidity of the vertical web member is utilized, the common action of the upper chord member and the lower chord member are increased, the vertical stress is supported by the horizontal arrangement, and the vertical chord member, and the integral structure is effectively improved.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (6)
1. The utility model provides a parallel wooden truss structure of dowel welding, is including last chord member and lower chord member that parallel interval set up, the corresponding end of last chord member end and lower chord member links to each other its characterized in that through vertical connecting rod: be located to be provided with two rows of web member subassemblies between last chord member and the lower chord member, each row of web member subassembly is including a plurality of dysmorphism web members that set up side by side, oval-shaped dysmorphism web member right-hand member point is connected with adjacent dysmorphism web member left end point, the dysmorphism web member segmental arc top of arranging the setting is being located to contradict in the dysmorphism web member segmental arc top of arranging the setting under lieing in, the dysmorphism web member segmental arc top that is located to arrange the setting is contradicted on last chord member surface, the dysmorphism web member segmental arc bottom that is located to arrange the setting down is contradicted under on the chord member surface.
2. The tack welded parallel wood truss structure of claim 1, wherein: inverted V-shaped rods are arranged in the special-shaped web members arranged in the upper row, the tips of the V-shaped rods abut against the inner sides of the tops of the corresponding special-shaped web members, upright V-shaped rods are arranged in the special-shaped web members arranged in the lower row, and the tips of the V-shaped rods abut against the inner sides of the bottoms of the corresponding special-shaped web members.
3. The tack welded parallel wood truss structure of claim 2, wherein: and a middle web member is arranged between the end head of each different web member positioned on the upper row and the corresponding end head of each different web member positioned on the lower row.
4. The timber welded parallel wood truss structure of claim 3, wherein: vertical web members are arranged between adjacent special-shaped web members, the upper ends of the vertical web members are connected with the upper chord members, the lower ends of the vertical web members are connected with the lower chord members, and each end point of each special-shaped web member is connected with the corresponding vertical web member.
5. The timber welded parallel wood truss structure of claim 4, wherein: erect web member root an organic whole and be provided with the support atress piece, it is right trapezoid shape setting to support the atress piece, support atress piece base and be connected with the perpendicular web member side that corresponds, support atress piece right-angle side and be connected with corresponding upper chord or lower chord.
6. A tack welded parallel wood truss structure as defined in any one of claims 1 to 5 wherein: the top of the special-shaped web member is welded with the upper chord member through a wooden nail, and the bottom of the special-shaped web member is welded with the lower chord member through a wooden nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111469106.2A CN113982185B (en) | 2021-12-03 | 2021-12-03 | Parallel wood truss structure of dowel welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111469106.2A CN113982185B (en) | 2021-12-03 | 2021-12-03 | Parallel wood truss structure of dowel welding |
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| Publication Number | Publication Date |
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| CN113982185A CN113982185A (en) | 2022-01-28 |
| CN113982185B true CN113982185B (en) | 2022-11-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2455071A1 (en) * | 2003-11-24 | 2005-05-24 | Michael Strickland | Segmented cold formed joist |
| CN206385724U (en) * | 2016-12-30 | 2017-08-08 | 南京林业大学 | A kind of timber truss |
| CN108643558A (en) * | 2018-06-12 | 2018-10-12 | 刘静锋 | The type steel bar truss floor support plate and construction method of the detachable end template of welded type |
| CN208380115U (en) * | 2018-06-27 | 2019-01-15 | 南京林业大学 | A kind of timber truss nail joint hole positioning device |
| CN111119405A (en) * | 2019-12-26 | 2020-05-08 | 常州工学院 | Assembled steel-wood combined truss |
-
2021
- 2021-12-03 CN CN202111469106.2A patent/CN113982185B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2455071A1 (en) * | 2003-11-24 | 2005-05-24 | Michael Strickland | Segmented cold formed joist |
| CN206385724U (en) * | 2016-12-30 | 2017-08-08 | 南京林业大学 | A kind of timber truss |
| CN108643558A (en) * | 2018-06-12 | 2018-10-12 | 刘静锋 | The type steel bar truss floor support plate and construction method of the detachable end template of welded type |
| CN208380115U (en) * | 2018-06-27 | 2019-01-15 | 南京林业大学 | A kind of timber truss nail joint hole positioning device |
| CN111119405A (en) * | 2019-12-26 | 2020-05-08 | 常州工学院 | Assembled steel-wood combined truss |
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| CN113982185A (en) | 2022-01-28 |
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