BE881734A - METHOD FOR STRENGTHENING WOODEN BEAMS AND Beams BEEN THEREFORE - Google Patents
METHOD FOR STRENGTHENING WOODEN BEAMS AND Beams BEEN THEREFORE Download PDFInfo
- Publication number
- BE881734A BE881734A BE2/58408A BE2058408A BE881734A BE 881734 A BE881734 A BE 881734A BE 2/58408 A BE2/58408 A BE 2/58408A BE 2058408 A BE2058408 A BE 2058408A BE 881734 A BE881734 A BE 881734A
- Authority
- BE
- Belgium
- Prior art keywords
- beams
- requirement
- fiber mat
- epoxy resin
- reinforced
- Prior art date
Links
Classifications
-
- 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
- E04C3/18—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with metal or other reinforcements or tensioning members
- E04C3/185—Synthetic reinforcements
-
- 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
- E04C3/18—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with metal or other reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0248—Increasing or restoring the load-bearing capacity of building construction elements of elements made of wood
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
Description
De onderhavige uitvinding betreft een werkwijze voor het verstevigen van houten balken en strekt zich uit tot verstevigde balken bekomen door toepassing van deze werkwijze.
De uitvinding is bijzonder gericht op - maar niet beperkt tot - het restaureren van oude balken of nog op het verstevigen van balken van een bestaand geraamte om het draagvermogen daarvan aan nieuwe eisen aan te passen.
Verschillende werkwijzen zijn reeds bekend om een houten balk te verstevigen, hetzij door op deze balk een tweede balk
te bevestigen, hetzij door de balk te voorzien van metalen staven (DE-PS nr. 547.576). De uitvinding behoort tot de eerste groep.
Tot op heden is het onderling verbinden van twee balken
tot één mechanisch geheel beperkt gebleven tot balken met betrekkelijk kleine dwarse doorsneden. De bekende technieken
zijn moeilijk of niet toepasbaar op grotere balken, bijzonder wanneer het werk in situ dient uitgevoerd te worden.
De uitvinding heeft tot doel een degelijke oplossing aan dit probleem te verschaffen.
Hiervoor wordt een werkwijze voorgesteld om op of tegen
een houten balk een houten verstevigingsbalk te bevestigen, die minstens de volgende stappen omvat :
a.- de twee voornoemde balken in de gewenste stand onderling tegen elkaar te brengen met interponering van een vezelmat;
b.- het boren van een aantal ankergaten doorheen de voornoemde balken en vezelmat;
c.- het steken van bewapeningsstaven in de bekomen boringen; d.- het afdichten van de naden tussen de twee balken;
e.- het gieten, respektievelijk spuiten, van een epoxyhars of een epoxyharsmengsel langs voornoemde ankergaten tot deze laatsten volledig zijn gevuld en de vezelmat doordrenkt.
Ter verduidelijking wordt hierna een uitvoeringsvoorbeeld beschreven met verwijzing naar de bijgevoegde tekeningen, waarin:
figuur 1 een volgens de uitvinding verstevigde balk in zijaanzicht weergeeft; en figuur 2 een bovenzicht van de balk volgens figuur 1 daarstelt.
Een oude, aangetaste balk 1 dient verstevigd te worden. De ongezonde houtdelen worden volledig verwijderd en de gebeurlijke holten met een gepast epoxyhars of epoxyharsmengsel opgevuld. Dit geldt ook voor de koppen, waarvoor een tijdelijk bekisten vaak nodig zal zijn.
Het voorziene kontaktvlak met de verstevigingsbalk 2 wordt vlak geschaafd en de balk over zijn ganse omtrek gezandstraald.
<EMI ID=1.1>
300 a 400 gr/m2 geplaatst en daarop de verstevigingsbalk 2.
<EMI ID=2.1>
genoeg 45[deg.] ten overstaan van de dwarse doorsnede van de balken.
Zoals in figuur 2 aangetoond, liggen deze ankergaten in twee versprongen rijen.
Het aantal, de afstand tussen en de vertikale hoek van de ankergaten worden van geval tot geval door berekening bepaald.
<EMI ID=3.1>
beeld uit een glasvezelverstevigd kunsthars, gestoken. Vervolgens worden de naden tussen de twee balken afgedicht bij middel van een bekisting, een aangepaste cement- of kunstharsmortel of een gebitumeerd weefsel.
Langs de ankergaten wordt een aangepast epoxyharsmengsel gegoten of gespoten tot de gaten volledig zijn gevuld en de vezelmat doordrenkt.
Na ongeveer 24 uur is het epoxyharsmengsel voldoende uitgehard. De afdichting van de naden wordt verwijderd en de nog overblijvende scheuren worden gelnjekteerd met epoxyhars of een
The present invention relates to a method for stiffening wooden beams and extends to stiffened beams obtained by using this method.
The invention is particularly aimed at - but not limited to - the restoration of old beams or the reinforcement of beams of an existing frame in order to adapt its load-bearing capacity to new requirements.
Various methods are already known for reinforcing a wooden beam, or by a second beam on this beam
or by providing the beam with metal bars (DE-PS No. 547.576). The invention belongs to the first group.
To date, the interconnection of two beams
limited to one mechanical whole to beams with relatively small cross sections. The known techniques
are difficult or not applicable to larger beams, especially when the work has to be carried out in situ.
The object of the invention is to provide a sound solution to this problem.
For this, a method is proposed to op or against
attach a wooden beam to a wooden reinforcement beam, which includes at least the following steps:
a.- bringing the two aforementioned beams together in the desired position with each other with the interposition of a fiber mat;
b.- drilling a number of anchor holes through the aforementioned beams and fiber mat;
c.- inserting reinforcing bars in the obtained bores; d.- sealing the seams between the two beams;
e.- pouring or spraying an epoxy resin or an epoxy resin mixture along said anchor holes until the latter are completely filled and the fiber mat is saturated.
For clarification, an exemplary embodiment is described below with reference to the accompanying drawings, in which:
figure 1 shows a beam reinforced according to the invention in side view; and figure 2 shows a top view of the beam according to figure 1.
An old, damaged beam 1 needs to be reinforced. The unhealthy wood parts are completely removed and the possible voids are filled with an appropriate epoxy resin or epoxy resin mixture. This also applies to heads, which will often require temporary formwork.
The provided contact surface with the reinforcing beam 2 is planed flat and the beam sandblasted over its entire circumference.
<EMI ID = 1.1>
300 to 400 gr / m2 and then the reinforcement beam 2.
<EMI ID = 2.1>
enough 45 [deg.] in relation to the transverse section of the beams.
As shown in Figure 2, these anchor holes are in two staggered rows.
The number, distance between and vertical angle of the anchor holes are determined on a case-by-case basis by calculation.
<EMI ID = 3.1>
statue made of a fiberglass-reinforced synthetic resin, carved. Then the seams between the two beams are sealed by means of a formwork, a modified cement or synthetic resin mortar or a bitumen fabric.
A custom epoxy resin mixture is poured or sprayed along the anchor holes until the holes are completely filled and the fiber mat is saturated.
After about 24 hours, the epoxy resin mixture is sufficiently cured. The sealing of the seams is removed and the remaining cracks are injected with epoxy resin or a
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2/58408A BE881734A (en) | 1980-02-15 | 1980-02-15 | METHOD FOR STRENGTHENING WOODEN BEAMS AND Beams BEEN THEREFORE |
EP80200431A EP0034224A3 (en) | 1980-02-15 | 1980-05-08 | Process for reinforcing wooden beams, and beams so obtained |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE881734 | 1980-02-15 | ||
BE2/58408A BE881734A (en) | 1980-02-15 | 1980-02-15 | METHOD FOR STRENGTHENING WOODEN BEAMS AND Beams BEEN THEREFORE |
Publications (1)
Publication Number | Publication Date |
---|---|
BE881734A true BE881734A (en) | 1980-08-18 |
Family
ID=25659114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE2/58408A BE881734A (en) | 1980-02-15 | 1980-02-15 | METHOD FOR STRENGTHENING WOODEN BEAMS AND Beams BEEN THEREFORE |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE881734A (en) |
-
1980
- 1980-02-15 BE BE2/58408A patent/BE881734A/en not_active IP Right Cessation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: EMERGO CHEMICAL COATING N.V. Effective date: 19850215 |