CN102242571A - Method for reinforcing wood beam by connecting steel plate through screws - Google Patents
Method for reinforcing wood beam by connecting steel plate through screws Download PDFInfo
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- CN102242571A CN102242571A CN2011101136749A CN201110113674A CN102242571A CN 102242571 A CN102242571 A CN 102242571A CN 2011101136749 A CN2011101136749 A CN 2011101136749A CN 201110113674 A CN201110113674 A CN 201110113674A CN 102242571 A CN102242571 A CN 102242571A
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Abstract
The invention relates to the field of constructional engineering and discloses a method for reinforcing a wood beam by connecting a steel plate through screws. The method comprises the following concrete steps: choosing a whole piece of steel plate, the thickness of which is 3mm-5mm and the length of which is equal to the span of the wood beam; superposing the central line of the steel plate with the central line of a pulled side of the wood beam; and forming holes on the steel plate along the longitudinal direction and assembling and tightening log screws, thereby tightly jointing the steel plate with the pulled side of the wood beam. The method can be used for ensuring that the wood beam meets the present use demand, overcoming the defect of a wholly replacing method, efficiently preventing an original structure from being damaged in a disassembling process, ensuring the bearing capacity and durability of the wood beam, ensuring that the wood beam has reversibility and meets the following use demand, and ensuring that an advanced and reasonable repairing and reinforcing method can be performed on the wood beam in the future.
Description
Technical field
The present invention relates to building engineering field, be specifically related to the building reinforce transformation, especially the existing building maintenance and reinforcement of wooden frame in the historical building particularly is a kind of method of utilizing screw to connect the steel plate reinforcement wooden frame.
Background technology
The existing landmark of China mostly is wooden construction or post and panel structure.Because aging or service load increase often causes wooden frame anti-bending bearing capacity deficiency, need reinforce.The general modes that adopt whole replacement of past more, but because China's wooden construction adopts joggle more, change wooden frame and just need take original structure apart, the additional injury that can cause continuous timber compoment, the globality and the safe handling of continuous pin, sets of brackets on top of the columns and timber roof truss certainly will be had influence on, even history culture value and historical sites feature that landmark contains may be damaged.
Along with being rooted in the hearts of the people of historical building Echtheit protection theory; to the particularly all the more strictness of requirement of landmark maintenance and reinforcement of historical building; more and more emphasize the reversibility of maintenance and reinforcement method; could not influence the more rational and effective maintenance and reinforcement method that adopts in the future like this; farthest preserve the history culture value that historical building is contained, the continuation of insurance forever of assurance historical building is protected and is utilized.Both can make wooden frame meet current instructions for use if adopt screw to connect steel plate reinforcement, and can guarantee that again wooden frame adopted advanced more reasonably maintenance and reinforcement method in the future at the wooden frame tension face; Have reversibility, and easy construction.
Summary of the invention
The present invention aims to provide the method that screw connects the steel plate reinforcement wooden frame.
This screw connects the method for steel plate reinforcement wooden frame, and its technical scheme is, according to the freely-supported wooden frame be subjected to force mode (top is compression face, and the bottom is a tension face), adopt wood screw to connect steel plate at the wooden frame tension face and improve its supporting capacity.Screw connects the method for steel plate reinforcement wooden frame, may further comprise the steps:
Select for use thickness 3mm～5mm, with the isometric monoblock steel plate of wooden frame span; The center line of steel plate is overlapped with the center line of wooden frame tension face;
Screw wood screw along the vertical punching of steel plate and layout and installation, steel plate is combined closely with the wooden frame tension face;
Used steel plate is the monoblock steel plate, and width is 90%～100% of a wooden frame width;
At wooden frame in a lateral direction, the quantity of wood screw is 2～3 of every rows, and horizontal spacing is 40mm～50mm, the wood screw and the steel plate longitudinal edge spacing horizontal spacing 10mm～50mm at edge;
Each arranges the wood screw center is 400mm～600mm along beam length direction longitudinal pitch, and the center of one of edge row's wood screw and the distance at steel plate edge are 30mm～350mm on the longitudinal direction, are preferably 50mm～250mm;
Wood screw is the hexagonal wood screw, and diameter is 8mm～12mm;
When the wooden frame height was not more than 200mm, used thickness was the steel plate of 3mm～4mm, and the longitudinal pitch of wood screw is 400mm～600mm; Each arranges wood screw is 2, and each screw equates with distance between the steel plate center line; The central cross spacing 45mm～55mm of every row's wood screw;
When wooden frame height during greater than 200mm, used thickness is 4mm～5mm, and the longitudinal pitch of wood screw is 400mm～600mm, and each arranges wood screw is 3, and middle wood screw is positioned on the steel plate center line, and equidistant with the wood screw on both sides; The central cross spacing 35mm～45mm of every row's wood screw.
The hole of beating on steel plate, the aperture is than the big 0.5mm～1mm of wood screw diameter.
The present invention is subjected to force mode (top is the pressurized edge, and the bottom is the tension edge) according to the freely-supported wooden frame, connects the steel plate reinforcement wooden frame at the wooden frame tension face by screw and improves its supporting capacity.By the wooden frame after the said method reinforcing, its bearing capacity increases above 40%.
The method that screw of the present invention connects the steel plate reinforcement wooden frame has reversibility, can not only make wooden frame meet current instructions for use, overcomes the shortcoming of a whole replacement method, effectively avoids dismounting badly original structure; Can also guarantee the bearing capacity and the durability of wooden frame, satisfy follow-up instructions for use, and guarantee that wooden frame adopts advanced more reasonably maintenance and reinforcement method in the future.Therefore, screw connection steel plate reinforcement wooden frame is a kind of effective reinforcement means of historical building.
Description of drawings
Fig. 1 reinforces vertical schematic diagram for the wooden frame of embodiment 1 and 2
Fig. 2 is that the wooden frame of embodiment 1 is reinforced the sectional view in the A-A direction
Fig. 3 is that the wooden frame of embodiment 2 is reinforced the sectional view in the A-A direction
The 1-wooden frame, 2-steel plate, 3-tension face, 4-compression face, 5-hexagonal wood screw
The specific embodiment
The present invention is described in further detail and completely below in conjunction with embodiment:
Wooden frame height 200mm, wide 100mm, span 3.6m, total length 4m in certain landmark cause its bearing capacity can not satisfy safety requirements owing to wear out, and need reinforce.As depicted in figs. 1 and 2, implementation step is:
(1) load that earlier wooden frame 1 is born unloads, and wooden frame top is compression face 4, and the bottom is a tension face 3;
The hexagonal wood screw 5 that monoblock steel plate 2 of (2) select that 3mm is thick, 100mm is wide for use, 3.6m is long and diameter are 10mm is reinforced; The center line of steel plate is overlapped with the center line of wooden frame tension face 3;
(3) vertically arrange hexagonal wood screw 5 along steel plate, wooden frame in a lateral direction, every row's wood screw quantity is 2, hexagonal wood screw horizontal spacing 50mm, two wood screws equate to the distance of steel plate center line, is 25mm to the distance of steel plate longitudinal edge;
The hexagonal wood screw is 9 rows, and each arranges hexagonal wood screw center is 400mm along the beam length longitudinal pitch, and the center of first row's hexagonal wood screw at edge and the distance at steel plate edge are 200mm;
(4) it is standby to draw an analogy the circular hole of the big slightly 1mm of hexagonal wood screw diameter on the steel plate of hexagonal wood screw position;
(5) adopt spanner to screw the hexagonal wood screw, steel plate is combined closely, as shown in Figure 1, 2 with the wooden frame tension face.Screw connects the steel plate reinforcement wooden frame can continue carrying.
The pesudotsuga taxifolia wooden frame of above-mentioned high 200mm, wide 100mm, span 3.6m, total length 4m, as when adopting three branches to load (span 3.6m, load(ing) point spacing 1.2m), unguyed before, the bearing capacity of wooden frame is about 30.3kN; Reinforce through said method, promptly adopt φ 10 hexagonal wood screws (2 of every rows, horizontal spacing 50mm, along beam length longitudinal pitch 400mm) to connect the reversible reinforcing wood beam bearing capacity of the wide steel plate of the thick 100mm of 3mm and bring up to 43.2kN, improve 43% in the wooden frame bottom surface.
Because service load increases, the old wooden frame bearing capacity of height 250mm, width 125mm, span 4.5m, total length 5m can not satisfy safety requirements, need reinforce.As Fig. 1 and Fig. 3, implementation step is:
(1) load that earlier wooden frame is born unloads, and wooden frame top is compression face 4, and the bottom is a tension face 3;
The hexagonal wood screw that monoblock steel plate of (2) select that 5mm is thick, 125mm is wide for use, 4.5m is long and diameter are 10mm is reinforced; The center line of steel plate is overlapped with the center line of wooden frame tension face;
(3) vertically arrange 3 of hexagonal wood screw, every rows along steel plate, the hexagonal wood screw in the middle of each row is positioned on the steel plate center line, equates with distance between the hexagonal wood screw on both sides; Hexagonal wood screw horizontal spacing 40mm, the hexagonal wood screw on both sides is 22.5mm to the distance of steel plate longitudinal edge;
The hexagonal wood screw is 9 rows, and hexagonal wood screw center is 500mm along the beam length longitudinal pitch, and the center of first row's hexagonal wood screw at edge and the distance at steel plate edge are 250mm;
(4) it is standby to draw an analogy the circular hole of the big slightly 1mm of hexagonal wood screw diameter on the steel plate of hexagonal wood screw position;
(5) adopt spanner to screw the hexagonal wood screw, steel plate is combined closely, as shown in Figure 1, 2 with the wooden frame tension face.Screw connects the steel plate reinforcement wooden frame can continue carrying.
The wooden frame that above-mentioned high 250mm, wide 125mm, total length 5m, span are 4.5 meters, reinforce through said method, promptly bearing capacity can improve more than 40% after the wooden frame bottom surface adopts φ 10 hexagonal wood screws (3 of every rows, horizontal spacing 40mm, along beam length longitudinal pitch 500mm) to connect reversible reinforcings of the wide steel plate of the thick 125mm of 5mm.
Claims (6)
1. the method for a screw connection steel plate reinforcement wooden frame is characterized in that, may further comprise the steps:
Select for use thickness 3mm～5mm, with the isometric monoblock steel plate of wooden frame span; The center line of steel plate is overlapped with the center line of wooden frame tension face;
Screw wood screw along the vertical punching of steel plate and layout and installation, steel plate is combined closely with the wooden frame tension face;
Used steel plate is the monoblock steel plate, and width is 90%～100% of a wooden frame width;
At wooden frame in a lateral direction, the quantity of wood screw is 2～3 of every rows, and horizontal spacing is 40mm～50mm, the wood screw and the steel plate longitudinal edge spacing horizontal spacing 10mm～50mm at edge;
Each arranges the wood screw center is 400mm～600mm along beam length direction longitudinal pitch, and the center of one of edge row's wood screw and the distance at steel plate edge are 30mm～350mm on the longitudinal direction.
2. the described a kind of screw of claim 1 connects the method for steel plate reinforcement wooden frame, it is characterized in that, the center of row's wood screw at edge and the distance at steel plate edge are 50mm～250mm on the longitudinal direction.
3. claim 1 or 2 described a kind of screws connect the method for steel plate reinforcement wooden frame, it is characterized in that when the wooden frame height was not more than 200mm, used thickness was the steel plate of 3mm～4mm, and the longitudinal pitch of wood screw is 400mm～600mm; Each arranges wood screw is 2, and each screw equates with distance between the steel plate center line; The central cross spacing 45mm～55mm of every row's wood screw.
4. claim 1 or 2 described a kind of screws connect the method for steel plate reinforcement wooden frame, it is characterized in that, when wooden frame height during greater than 200mm, used thickness is 4mm～5mm, the longitudinal pitch of wood screw is 400mm～600mm, each arranges wood screw is 3, and middle wood screw is positioned on the steel plate center line, and equidistant with the wood screw on both sides; The central cross spacing 35mm～45mm of every row's wood screw.
5. the described a kind of screw of claim 1 connects the method for steel plate reinforcement wooden frame, it is characterized in that described wood screw is the hexagonal wood screw, and diameter is 8mm～12mm.
6. the described a kind of screw of claim 1 connects the method for steel plate reinforcement wooden frame, it is characterized in that, and the hole of on steel plate, beating, the aperture is than the big 0.5mm～1mm of wood screw diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101136749A CN102242571A (en) | 2011-05-04 | 2011-05-04 | Method for reinforcing wood beam by connecting steel plate through screws |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101136749A CN102242571A (en) | 2011-05-04 | 2011-05-04 | Method for reinforcing wood beam by connecting steel plate through screws |
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| CN2011101136749A Pending CN102242571A (en) | 2011-05-04 | 2011-05-04 | Method for reinforcing wood beam by connecting steel plate through screws |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525763A (en) * | 2015-12-08 | 2016-04-27 | 同济大学 | Beam strengthening method |
| CN105952182A (en) * | 2016-06-21 | 2016-09-21 | 南京林业大学 | Method for compound reinforcement of wooden beam |
| CN106545089A (en) * | 2016-12-07 | 2017-03-29 | 四川省建筑科学研究院 | One kind is worn bucket type gallows timber and takes out column space prolongation structure and its implementation |
| CN106930554A (en) * | 2017-05-08 | 2017-07-07 | 洛阳理工学院 | A kind of flat reinforcing of bucket of ancient building cross mouthful sets of brackets on top of the columns repairs structure |
| CN107327154A (en) * | 2017-05-19 | 2017-11-07 | 中国矿业大学 | A kind of method of screw connection aluminium alloy plate reinforcing wood beam |
| CN107795143A (en) * | 2017-11-17 | 2018-03-13 | 郑州大学 | Triangle wood roof truss lower edge beam steel drawknot hardened system and its construction technology |
| CN108265882A (en) * | 2018-02-02 | 2018-07-10 | 厦门源昌城建集团有限公司 | A kind of steel plate-stone combination beam and its construction method for long-span space |
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| CN101956464A (en) * | 2010-09-10 | 2011-01-26 | 上海市建筑科学研究院(集团)有限公司 | Method for strengthening wood beam |
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2011
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| JP2005139868A (en) * | 2003-11-04 | 2005-06-02 | Yasuo Kawada | Method for reinforcing wooden building against earthquake or the like by steel-frame portal type and four side frame type rigid frame |
| JP4072687B2 (en) * | 2003-11-21 | 2008-04-09 | 新日鉄エンジニアリング株式会社 | Seismic reinforcement structure for building structures |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525763A (en) * | 2015-12-08 | 2016-04-27 | 同济大学 | Beam strengthening method |
| CN105525763B (en) * | 2015-12-08 | 2019-01-25 | 同济大学 | A kind of beam reinforcement means |
| CN105952182A (en) * | 2016-06-21 | 2016-09-21 | 南京林业大学 | Method for compound reinforcement of wooden beam |
| CN105952182B (en) * | 2016-06-21 | 2018-01-26 | 南京林业大学 | A kind of method of composite consolidation wooden frame |
| CN106545089A (en) * | 2016-12-07 | 2017-03-29 | 四川省建筑科学研究院 | One kind is worn bucket type gallows timber and takes out column space prolongation structure and its implementation |
| CN106930554A (en) * | 2017-05-08 | 2017-07-07 | 洛阳理工学院 | A kind of flat reinforcing of bucket of ancient building cross mouthful sets of brackets on top of the columns repairs structure |
| CN107327154A (en) * | 2017-05-19 | 2017-11-07 | 中国矿业大学 | A kind of method of screw connection aluminium alloy plate reinforcing wood beam |
| CN107795143A (en) * | 2017-11-17 | 2018-03-13 | 郑州大学 | Triangle wood roof truss lower edge beam steel drawknot hardened system and its construction technology |
| CN108265882A (en) * | 2018-02-02 | 2018-07-10 | 厦门源昌城建集团有限公司 | A kind of steel plate-stone combination beam and its construction method for long-span space |
| CN108265882B (en) * | 2018-02-02 | 2024-04-09 | 厦门源昌城建集团有限公司 | Steel plate-stone composite beam for large-span space and construction method thereof |
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Application publication date: 20111116 |