Structural glued-laminated timber round wooden column and manufacturing method thereof

A technology for glued wood and structures, applied in the direction of columns, pier columns, pillars, etc., can solve the problems of decay and knots of log columns, easy cracking and deformation of log columns, and difficulty in obtaining round wood columns, etc., to achieve moisture content coordination Consistent, Inexpensive, Defect-Few Results

Inactive Publication Date: 2012-07-04
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problems existing in the above-mentioned prior art that log columns are easily cracked and deformed when directly used, large-scale logs are not easy to obtain, the cross-section of conventional glulam is rectangular, and large-scale glulam is easy to crack during use, etc., the present invention provides a structural layer Panel glulam round wood column and its preparation method, through the use of small-sized solid wood sawn timber to manufacture glulam, necessary structural measures to reduce the generation of internal stress in the manufacturing process, and the way of combining and splicing to form glulam overcomes the above-mentioned deficiencies It effectively solves the problems that round wooden columns of any size are not easy to obtain, the log wooden columns are easy to crack and deform during use, and the defects such as decay and knots in the log wooden columns are not easy to remove.

Method used

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  • Structural glued-laminated timber round wooden column and manufacturing method thereof
  • Structural glued-laminated timber round wooden column and manufacturing method thereof
  • Structural glued-laminated timber round wooden column and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0048] (1) Pretreatment of wood raw materials: according to the design requirements, through mechanical sawing and other processing methods, the inherent decay, knots, twill, cracks and insect holes of fast-growing wood raw materials are eliminated and controlled, and the thickness of 15~35mm, The solid wood is sawn with a width of 80mm and a length of 500~2000mm, and the wood is chemically modified to prevent corrosion and insects. Then, adjust the moisture content of the wood at 8% by artificial drying, and use it as the wood material for the laminated wood column for the structure;

[0049] (2) Production of laminates for glued wood: Carry out tooth milling on the end of the wood, the tooth length is 8~15mm, the inclination ratio of the finger tenon slope is 1 / 5, the fitting degree is 0.1mm, and the temperature is above 18°C ​​and the relative humidity Under the environmental conditions of 50~70%, apply glue to the teeth, and the amount of glue applied is 350g / m 2 , apply ...

Embodiment 2

[0055] (1) Pretreatment of wood raw materials: according to the design requirements, through mechanical sawing and other processing methods, the inherent decay, knots, twill, cracks and insect holes of the structural wood raw materials are eliminated and controlled, and the thickness is 25~45mm. , Solid wood sawn timber with a width of 80~200mm and a length of 1000~4000mm. Then adjust the moisture content of the wood at 12% by artificial drying, and use it as the wood material for the laminated wood column for the structure;

[0056] (2) Manufacture of laminates for glued wood: Carry out tooth milling on the end of the wood, the tooth length is 25mm, the inclination ratio of the finger tenon slope is 1 / 7.5, the fitting degree is 0.25mm, and the temperature is above 18°C ​​and the relative humidity is 80%. Under the environmental conditions, apply glue to the teeth, the amount of glue is 150g / m 2 , apply pressure along the direction of the grain of the wood to connect the leng...

Embodiment 3

[0062] (1) Pretreatment of wood raw materials: according to the design requirements, through mechanical sawing and other processing methods, the inherent decay, knots, twill, cracks and insect holes of the structural wood raw materials are eliminated and controlled, and the thickness is 25~45mm. , solid wood sawn timber with a width of 80-200mm and a length of 1000-4000mm, or selectively fire-resistant impregnated modified wood raw materials, and then artificially dried to adjust the moisture content of the wood to 10%, as a structure Timber material for laminated lumber round posts;

[0063] (2) Manufacture of laminates for glued wood: Carry out tooth milling on the end of the wood, the tooth length is 20mm, the inclination ratio of the finger-tenon slope is 1 / 6, the fitting degree is 0.2mm, and the temperature is above 18°C ​​and the relative humidity is 60%. Under the environmental conditions, apply glue to the teeth, the amount of glue is 250g / m 2 , apply pressure along t...

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Abstract

The invention discloses a structural glued-laminated timber round wooden column and a manufacturing method thereof and belongs to the field of manufacturing of building materials. The structural glued-laminated timber round wooden column has a circular cross section and comprises member units and an adhesive layer, wherein the member units are in finger joint and are transversely spliced and fixedly stacked and adhered through the adhesive layer; texture of woods of the member units has consistent orientation; and the round wooden column has no knots, gaps, decayed parts, worm channels or other inherent natural defects of woods. The method comprises the step of manufacturing laminated wood employing small-specification wood sawn timber so as to manufacture the structural glued-laminated timber round wooden column. The problems that round wooden columns with any specification and size are difficult to obtain, stock columns easily crack and deform in the using process, the decayed parts, worm channels and other defects of the stock columns are difficult to overcome, and the like are effectively solved. The product can be used as a building bearing member, the wood materials are subjected to antiseptic treatment or are made of woods with high natural decay resistance; and the product can be used as a member for architectural ornament and decoration of outdoor or landscape garden wood buildings.

Description

technical field [0001] The patent relates to a round wooden column for a wooden building structure, in particular to a laminated wood round column for a structure and a preparation method thereof. Background technique [0002] At present, the timber supply of my country's forest resources is insufficient, and the development of natural forest protection projects has sharply reduced the amount of natural forest materials supplied. However, there are serious defects such as low strength and poor dimensional stability in a large number of fast-growing and high-yielding artificial forest timber in China, which seriously restricts The application of fast-growing wood. Therefore, there is a contradiction in our country that the supply of high-quality timber resources is insufficient and needs to be met by imports, while the domestic application of a large number of fast-growing timber is limited and the utilization rate of timber is not high. Therefore, it is of great significance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/36B27M3/00
Inventor 刘伟庆岳孔陆伟东霍瑞丽杨会峰
Owner NANJING TECH UNIV
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