CN217630755U

CN217630755U - Light wood structure hyperbolic roof structure

Info

Publication number: CN217630755U
Application number: CN202221081879.3U
Authority: CN
Inventors: 纵云侠; 邓鹏�; 章小珍; 林丽; 李小莉
Original assignee: Shanghai Lintongyan Liguohao Civil Engineering Consulting Co ltd
Current assignee: Shanghai Lintongyan Liguohao Civil Engineering Consulting Co ltd
Priority date: 2022-05-08
Filing date: 2022-05-08
Publication date: 2022-10-21
Anticipated expiration: 2032-05-08

Abstract

The utility model belongs to the technical field of building structure, specifically be a light-duty timber structure hyperbolic roofing structure. The utility model designs a hyperbolic roof structure, which arranges wood trusses according to a certain distance; the upper chord of each wood truss is a hyperboloid cut along the same direction, so that the upper chord of each wood truss is different; each wood truss includes: the hyperbolic roof line, the truss upper chord and the truss lower chord; the lower chord of the truss is horizontally arranged; the hyperbolic roof line is parallel to the datum line of the upper chord of the truss; end vertical web members are arranged at two ends of the upper chord member and the lower chord member of the truss, the middle of the upper chord member and the middle of the lower chord member are provided with internal vertical web members at equal intervals, an inclined web member is arranged between every two adjacent internal vertical web members, the inclined web members at two sides are opposite in inclination direction by taking the middle internal vertical web member as a reference; the utility model discloses a facade molding of light-duty timber structure roofing can be richened to hyperbolic roofing to ensure the security of structure.

Description

Light wood structure hyperbolic roof structure

Technical Field

The utility model belongs to the technical field of building structure, concretely relates to light-duty timber structure hyperbolic roofing structure.

Background

The existing light wood structure roof is generally a character-shaped sloping roof, adopts a light wood truss, and has single shape and less change. Moreover, safety is also lacking.

Disclosure of Invention

An object of the utility model is to provide a light-duty timber structure hyperbolic roofing structure that the atress is even, the security is high.

The utility model designs a light wood structure hyperbolic roof structure, which uses the thought of herringbone sloping roof light wood truss to arrange the wood truss according to a certain distance (generally using 310,410,610 as modulus); the upper chord of each wood truss is a hyperboloid cut in the same direction, so that the upper chord of each wood truss is different.

The utility model discloses a light-duty timber structure hyperbolic roofing structure, in every wood truss, include: a hyperbolic roof line (namely a hyperbolic roof) 1, a truss upper chord 3 and a truss lower chord 4 are arranged above the truss; the lower chord 4 of the truss is horizontally arranged; the hyperbolic roof line 1 is parallel to the reference line 2 of the upper chord 3 of the truss (namely, the distances between the hyperbolic roof line and the reference line in the normal directions of all points are equal); the two ends of the upper truss chord 3 and the lower truss chord 4 are provided with end vertical web members 6, the middle of each vertical web member is provided with an internal vertical web member 5 at equal intervals, an oblique web member 7 is arranged between every two adjacent internal vertical web members 5, the internal vertical web members 5 in the middle are used as the benchmark, and the oblique web members 7 on the two sides are opposite in inclination direction. As shown in fig. 1.

The distance between the hyperbolic roof line 1 and the truss upper chord datum line 2 is required to ensure that the truss upper chord does not protrude out of the hyperbolic roof line 1. The design principle of the truss is as follows: and taking the lowest point of the datum line 2 of the upper chord 3 of the truss as a datum, recording the distance between the lowest point and the lower chord 4 as h, and determining the elevation of the central line of the lower chord 4 according to the value of h. The value of h needs to ensure that the clear distance between the upper chord 3 and the lower chord 4 of the truss is not less than 100mm, so that the construction of the upper toothed plate of the truss node is facilitated.

The light wood structure house roof generally adopts a herringbone slope form, and the shape is monotonous. The utility model discloses a hyperbolic roofing can enrich the facade molding of light-duty timber structure roofing to ensure the security of structure.

Drawings

Fig. 1 is a schematic elevation view of a truss in a hyperbolic roof.

Reference numbers in the figures: the truss structure comprises a truss upper chord member, a truss lower chord member, a truss inner vertical web member, a truss end vertical web member, a truss inclined web member, a truss diagonal web member and a longitudinal separation line, wherein the truss inner vertical web member is 1, the truss upper chord member is 2, the truss upper chord member is 3, the truss lower chord member is 4, the truss inner vertical web member is 5, the truss end vertical web member is 6, the truss inclined web member is 7, and the truss lower web member is 8.

Detailed Description

In order to ensure that the truss of the hyperbolic roof meets the structural requirement of the light wood truss, the stress condition is calculated in the following way: the stress of the truss web member and the upper chord member is small, and the internal force of the rod member is calculated according to the stress of the truss; the stress of the lower chord of the truss is large, and the internal force of the truss is calculated according to the stress mode of the truss. Therefore, the safety can be ensured, and the requirement of building design specifications can be met.

The lower truss chord is calculated according to a simply supported beam, and at the moment, the web members (including the internal vertical web member 5 of the truss, the vertical web member 6 of the end part of the truss, the oblique web member 7 of the truss), the upper truss chord 3 and the roof load act on the lower truss chord 4 in a load mode. The truss web members (truss internal vertical web members 5, truss end vertical web members 6 and truss diagonal web members 7) and the truss upper chord members 3 calculate the internal force according to the truss structure. The truss internal force can be calculated by adopting a structural mechanics solver or finite element software such as MIDAS GEN. After the internal force is obtained, the maximum internal force of the similar rod piece is taken, and whether the strength and the stability of the member meet the requirements or not is checked by pressing the bent member and the web members (the truss internal vertical web member 5, the truss end vertical web member 6 and the truss inclined web member 7) by the truss upper chord member 3 and pressing the shaft pressing or pulling the member.

The truss is separated according to a certain distance bi in the horizontal direction, the longitudinal separation line 8 is intersected with the truss upper chord datum line 2, and the intersection point of the longitudinal separation line and the truss upper chord datum line is connected to obtain the center line of the upper chord. And arranging the upper chord according to the trial calculation result, wherein if the upper chord is positioned at the lower part of the hyperbolic roof line 1, the distance between the hyperbolic roof line 1 and the truss upper chord reference line 2 is proper.

For the wood truss, bi is about 1000mm, the SPF of 40x140 is selected as the vertical web member 6 and the upper chord member 3 at the end part of the truss, and the SPF of 40x89 is selected as the vertical web member 5 and the diagonal web member in the truss. The section of the lower chord of the truss is determined according to calculation.

The trusses are generally uniformly arranged at intervals of 610 (which is the modulus of a wood structure), and because the roof is a hyperboloid, the chord reference line of each truss is different. And the top of the upper chord of the adjacent truss is paved with an OSB plate, and the OSB plate is connected with the upper chord of the truss through nails. The height difference of the upper chords of the adjacent trusses of the hyperbolic roof can cause the four sides of the OSB board not to be coplanar. At the moment, the height difference of the adjacent upper chords can be adjusted by adjusting the size bi, so that the height difference of the upper chords of the adjacent trusses is reduced as much as possible. In addition, the condition that the OSB plates are not coplanar can be adjusted by means of local paddlewedges. The OSB plate is not arranged between the lower chords of the truss, the fireproof gypsum board is generally arranged on the lower portion of the lower chords, and the fireproof gypsum board and the lower chords are connected through the nails. The node parts of the truss are connected by toothed plates.

The insulating layer may be placed between the upper chords. And pipelines can be arranged between the upper chord and the lower chord of the truss.

Supports need to be arranged among the trusses. And cross Braces (BLOCK) are added between the lower chords of the wood truss at intervals of 1.2m, and the cross braces and the lower chords have the same specification. And a lower chord diagonal support is arranged between the outer wall and the first truss, and the intersection point of the lower chord diagonal support is positioned on the upper surface of the lower chord. Longitudinal cross supports are arranged between the vertical web members at the end parts of the adjacent trusses, and longitudinal cross supports are arranged between the other web members every other. The bars supported were all 38x89 SPF.

While, for purposes of simplicity of explanation, the above-described methodologies are shown and described as a series of structures, it is to be understood and appreciated that the methodologies are not limited by detail, as some structures may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, but as may be understood by those of ordinary skill in the art.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A light wood structure hyperbolic roof structure is characterized in that wood trusses are arranged at certain intervals; the upper chord of each wood truss is a hyperboloid cut along the same direction, so that the upper chord of each wood truss is different;

in each wood truss, include: the upper hyperbolic roof line (1), the truss upper chord (3) and the truss lower chord (4); the lower chord (4) of the truss is horizontally arranged; the hyperbolic roof line (1) is parallel to the datum line (2) of the upper chord (3) of the truss; end vertical web members (6) are arranged at two ends of the upper truss chord (3) and the lower truss chord (4), internal vertical web members (5) are arranged in the middle at equal intervals, oblique web members (7) are arranged between every two adjacent internal vertical web members (5), the internal vertical web members (5) in the middle are used as a reference, and the oblique web members (7) on two sides are opposite in inclination direction;

the distance between the hyperbolic roof line (1) and the truss upper chord datum line (2) is ensured to ensure that the truss upper chord does not protrude out of the hyperbolic roof line (1); taking the lowest point of the datum line (2) of the upper chord (3) of the truss as a reference, marking the distance between the reference line and the lower chord (4) of the truss as h, and determining the elevation of the central line of the lower chord (4) of the truss according to the value of h; the value of h needs to ensure that the clear distance between the upper chord (3) and the lower chord (4) of the truss is not less than 100mm.