Structural wood-based panel with hidden enhanced stripe and preparation method and combined wall body thereof

A structural board and wood-based technology, applied in the field of wood-based structural boards and their preparation methods, and composite walls, can solve problems such as uneven stress and damage to wood-based plywood, achieve improved mechanical properties, increase utilization, and be feasible strong effect

Active Publication Date: 2018-11-06
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the uneven stress of the existing wood-based plywood shear walls under horizontal loads causes the wood-based plywood to be damaged first, the invention provides a wood-based structural board with hidden reinforcing strips, a preparation method thereof, and a composite wall

Method used

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  • Structural wood-based panel with hidden enhanced stripe and preparation method and combined wall body thereof
  • Structural wood-based panel with hidden enhanced stripe and preparation method and combined wall body thereof
  • Structural wood-based panel with hidden enhanced stripe and preparation method and combined wall body thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as image 3 As shown, the wood-based structural board with implicit reinforcement strips is a wood-based plywood, which includes a high-density area 101 and a low-density area 102 in the horizontal direction of the thickness of the wood-based plywood, and the high-density area 101 is set at the low-density area. On both sides of the region 102 , the density of the high-density region 101 is higher than that of the low-density region 102 . In the wood-based plywood high-density area 101 , there are short boards 4 sandwiched between the two veneer boards 3 in the horizontal direction perpendicular to the thickness.

[0040] Such as figure 2 As shown, when the shear wall made of conventional wood-based plywood is damaged by horizontal action, the corners of the board are prone to damage, easy to pull out nails, or premature yield due to stress concentration at the corners, while the central area The plate is still intact, and this part of the intact plate has not f...

Embodiment 2

[0042]The structure of the wood-based structural board with hidden reinforcing strips in this embodiment is basically the same as that in Embodiment 1. Furthermore, the density of the high-density area 101 in this embodiment is 1.1-1.7 times that of the low-density area 102 .

[0043] Specifically, the average density of the high-density region 101 of the present invention is maintained at 0.65-0.85 g / cm 3 Within the range, the density of the low-density area 102 ranges from 0.5 to 0.6 g / cm 3 , which not only meets the strength requirements after density enhancement, but also saves materials. Although according to the proportional relationship between density and strength, if simply consider increasing the density endlessly to increase the strength, it will not only increase the complexity of the preparation process and the cost of materials, but also cannot meet the use requirements in practical applications. From the perspective of reinforced area, if only the entire board ...

Embodiment 3

[0045] The basis for the division of the high-density area 101 and the low-density area 102 in the present invention comes from the previous research on wood-based plywood. According to the failure mode of the wood-frame composite wall when it is subjected to horizontal force and the simulation results of finite elements, the wood-based plywood is used as the cladding When the panel is damaged, the corner and edge areas are the most damaged, and the stress they bear is 3 to 7 times that of the central area of ​​the panel. Such as figure 2 As shown, when the shear wall is damaged by the horizontal lateral force, the four corners of the cladding panel and the wall skeleton composed of stud columns 7 will have the problem that the nails are easy to pull out, which is easier to damage than the middle, through the finite element simulation It is very clear to see the stress distribution of the cladding panels during the failure process of the shear wall. The four corners of the cl...

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Abstract

The invention discloses a structural wood-based panel with a hidden enhanced stripe and a preparation method and a combined wall body thereof and belongs to the field of wood-based plywood shear walls. The structural wood-based panel with the hidden enhanced stripe comprises high density areas and a low density area, wherein the high density areas are arranged on two sides of the low density area.According to the preparation method of the structural wood-based panel, when an assembly is gummed, short plates are clamped at two ends between every two veneers, so that the high density areas areformed at two ends of the compression molded wood-based plywood, and the low density area is formed on an assembly without the short plates. According to the combined wall body, the high density areasof the wood-based plywood prepared by the method and wall columns are connected through nails while being gummed. According to the relationship between the mechanical property and density of the wood-based plywood, the mechanical property of the part, subjected to stress greatly, of the wood-based plywood is improved by way of locally enhancing the panel density, so that the panel performance isexerted fully and the integral lateral performance of the wood framework combined wall body is improved.

Description

technical field [0001] The invention belongs to the field of wood-based plywood shear walls, and in particular relates to a wood-based structural board with hidden reinforcing strips, a preparation method thereof and a composite wall. Background technique [0002] In buildings with wood-based plywood shear walls, the shear walls are composed of wood-based plywood and gauge timber connected by nails, and mainly bear the horizontal forces generated by earthquake action or wind load. When the horizontal shear force is large, the cladding panels of the conventional wood-based plywood shear walls are prone to misalignment and deformation along the joints, and damage to the joints such as nail shearing and pulling out occurs, resulting in the cladding panels and the wall. The bone columns separate, and the wall structure fails and loses its load-bearing capacity. Therefore, conventional wood-based plywood shear walls need to further improve lateral force resistance, ductility, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27D1/08B27D5/00B27M3/00B32B21/04B32B21/13B32B21/14B32B7/12B32B3/08B32B37/12B32B37/06B32B37/10B32B38/00
CPCB27D1/04B27D1/08B27D5/00B27D5/006B27M3/0073B27M3/0086B32B3/08B32B7/12B32B21/13B32B21/14B32B37/06B32B37/10B32B37/1284B32B38/0004B32B38/0012B32B2307/72B32B2607/02B32B2607/00
Inventor 岳孔邵亚陵刘伟庆吴建国石建李萌禹陆伟东吕城龙
Owner NANJING UNIV OF TECH
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