CN111255173A - FRP (fiber reinforced plastic) assembled eaves gutter and construction method thereof - Google Patents

Abstract

The invention belongs to the technical field of buildings, and particularly relates to an FRP (fiber reinforced plastic) assembled eaves gutter and a construction method thereof. The FRP assembled eaves gutter is formed by assembling an FRP inner groove drainage plate, a framework and an outer decorative plate, wherein the FRP inner groove drainage plate and the outer decorative plate are fixedly connected to the inner side and the outer side of the framework respectively; the waterproof layer at the joint of the FRP inner groove drain board is formed by welding through an FRP hand pasting process. The assembled eaves gutter has complete waterproof performance, and the FRP material is light in weight, high in strength, corrosion resistant and good in durability, so that the service life of the eaves gutter is ensured to be as long as that of an outer wall system. Compared with a cast-in-place concrete process, the FRP is convenient and fast to install in construction, the process is simple, the construction period can be shortened, and the cost is saved.

Description

FRP prefabricated gutters and their construction methods

technical field

The invention belongs to the technical field of construction, and in particular relates to a FRP assembled eaves gutter and a construction method thereof.

Background technique

The eaves ditch is a water collecting ditch on the edge of the eaves, which can collect rainwater and make it overflow to the outside along the edge of the ditch, which can play the role of shading and beautifying the shape.

The eaves are usually made of concrete or metal. Because metal eaves are easy to corrode, and the welded joints of metal eaves are easy to leak, so at present, most eaves products are made of concrete. However, the method of cast-in-place concrete is not only troublesome to construct and has a long construction period (maintenance after pouring), but also requires complex waterproofing treatment after completion, and because the overhangs are located on the outside of the sloping roof structure, the weight is large, and the erection of formwork supports is relatively It is difficult to guarantee the construction quality.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a kind of FRP prefabricated gutter, which has the advantages of light weight, high strength, corrosion resistance, good durability, and the service life of the gutter is the same as that of the external wall system. Convenient, simple process, can reduce construction period and save cost.

In order to realize the above-mentioned technical purpose, the present invention adopts the following technical scheme: FRP assembled gutters are assembled from FRP inner groove drainage board, skeleton and FRP outer decorative board, and the FRP inner groove drainage board and the FRP outer decorative board are respectively fixed and connected. on the inside and outside of the skeleton;

The FRP inner tank drainage board is made of 4800TEX roving with a mass content of 35-45% and an alkali-free glass fiber mat with a specification of ^300-900g /m2 as reinforcing materials, and is unsaturated with a viscosity of 350-750mPa·s. Polyester resin as the matrix is made by pultrusion process.

As a preferred technical solution, the waterproofing of the joints of the FRP inner tank drainage board is welded by FRP hand lay-up process. 300-900g/m ² of alkali-free glass fiber mat is cured at ambient temperature as reinforcement.

As a preferred technical solution, the exterior panel is a FRP exterior panel, and the FRP exterior panel is also made of 4800TEX roving with a mass content of 35-45% and alkali-free glass with a specification of ^300-900g /m2. The fiber felt is used as a reinforcing material, and is made of unsaturated polyester resin with a viscosity of 350-750 mPa·s as a matrix by a pultrusion process. Of course, the exterior trim panel can also be made of aluminum panels and other materials.

As a preferred technical solution, the FRP exterior decorative panel includes an exterior facade decorative panel located on the outer facade of the gutter and a bottom surface decorative panel located on the bottom surface of the gutter.

As a preferred technical solution, the mechanical properties of the FRP inner groove drainage board and the FRP outer trim board both meet the M17 level in GB/T31539-2015 <Structural Fiber Reinforced Composite Material Profiles>.

As a preferred technical solution, the skeleton includes a main keel, a secondary keel and a connecting back plate. The skeleton is preferably a steel structure skeleton, of course, galvanized, stainless steel and wood structure skeletons can also be used.

The present invention also provides the construction method of the above-mentioned FRP prefabricated gutters, comprising the following steps:

Step 1. Weld the main keel on the connecting backboard, fix the connecting backboard on the outer wall, and isolate the connecting backboard and the wall with FRP pads; then weld the secondary keel on the main keel to form an overall overhang skeleton; subsequently install external wall insulation;

Step 2: Install the FRP inner groove drainage plate on the skeleton, and then install the outer trim plate on the skeleton;

Step 3. Use hand lay-up process to weld the joints of the FRP inner tank drainage board. The hand lay-up adopts unsaturated polyester resin with the same viscosity of 350-750mPa·s as the matrix and the size of 300-900g/ ^m2 of alkali-free glass fiber Felt cures at ambient temperature for reinforcement.

Wherein, in step 2, the exterior decorative panel is preferably a FRP exterior decorative panel, and the FRP exterior decorative panel includes an exterior facade decorative panel located on the outer facade of the gutter and a bottom surface decorative panel located on the bottom surface of the gutter. The board and the bottom decorative board are respectively fixed on the frame.

The invention has the following beneficial effects: because the FRP inner groove drainage board is integrally manufactured by the pultrusion process, it has complete waterproof performance, and the waterproofing at the joint is welded by the FRP hand lay-up process, and the hand lay-up adopts the same unsaturated The polyester resin is used as the matrix, and the alkali-free glass fiber mat is used as the reinforcing material to cure at ambient temperature; the FRP material is lightweight, high-strength, corrosion-resistant and durable, which ensures that the service life of the gutters is the same as that of the exterior wall system. Compared with the cast-in-place concrete process, FRP is easy to install and simple in construction, which can reduce the construction period and save costs. The color of the exterior trim panel can be customized according to the color of the exterior wall.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in:

1 is a schematic structural diagram of an embodiment of the present invention;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

Figure 3 is a schematic diagram of the structure of the FRP inner groove drainage board and the waterproofing of the joints;

FIG. 4 is a schematic structural diagram of a facade decorative panel in an embodiment of the present invention;

5 is a schematic structural diagram of a bottom decorative panel in an embodiment of the present invention;

FIG. 6 is a construction state reference diagram of an embodiment of the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, as those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

As shown in FIG. 1 , the FRP prefabricated gutters are assembled from the FRP inner groove drainage board 10 , the frame 20 and the FRP outer trim panel 30 . The FRP inner groove drainage panel 10 and the FRP outer trim panel 30 are respectively fixed and connected to the frame 20 inside and outside;

In this embodiment, the FRP inner groove drainage plate 10 is in the shape of a trough material, with a thickness of 3-5mm, and plays a role in drainage. ^2. The alkali-free glass fiber mat is used as reinforcing material, and is made of unsaturated polyester resin with a viscosity of 350-750mPa·s by pultrusion process. The FRP inner groove drainage board itself has complete waterproof performance;

Referring to FIG. 3 , the waterproofing at the joint 11 of the FRP inner tank drainage board 10 is welded by FRP hand lay-up process, and the hand lay-up process adopts unsaturated polyester resin with the same viscosity of 350-750mPa·s as the matrix and specification. The alkali-free glass fiber mat of 300-900g/m ² is cured at ambient temperature as a reinforcing material to ensure that the waterproof performance of the joint is consistent with the waterproof performance of the board itself.

Referring to Figure 1, Figure 4 and Figure 5, the FRP exterior panel 30 plays the role of modeling and exterior decoration, and is in the shape of an equal section with a thickness of 3-5mm, and is also made of 4800TEX roving with a mass content of 35-45%. And the alkali-free glass fiber mat with a specification of 300-900g/m ² is used as the reinforcing material, and the unsaturated polyester resin with a viscosity of 350-750mPa·s is used as the matrix and is made by pultrusion process.

The FRP exterior trim panel 30 includes an exterior facade trim panel 31 and a bottom surface trim panel 32. The exterior elevation trim panel 31 is located on the outer facade of the gutter to play a decorative modeling role, and the bottom surface trim panel 32 is used to wrap the skeleton of the gutter. , Fixed on the bottom surface of the gutters to play a decorative role. FRP exterior panel color can be customized according to exterior wall color. Of course, the FRP exterior decorative panels can also be replaced by aluminum panels and decorative panels made of other materials, which all belong to the protection scope of the present invention.

In this embodiment, the mechanical properties of the FRP inner groove drainage plate 10 and the FRP outer trim plate 30 both meet the M17 grade in GB/T31539-2015 <Structural Fiber Reinforced Composite Material Profiles>.

The frame 20 includes a main keel 21 , a secondary keel 22 and a connecting back plate 23 . The skeleton is preferably a steel structure skeleton, of course, galvanized, stainless steel and wood structure skeletons can also be used; the primary and secondary keels are not limited to the use of square pipes or angle steel, the specific model is calculated according to the size of different gutters, which are welded and bolted. combine it all toghther.

1 to 6, the construction method of the above-mentioned FRP prefabricated gutters includes the following steps:

Step 1. Weld the main keel 21 (for example, it can be welded by 60×60×4 square tubes) on the connecting back plate 23, fix the connecting back plate 23 on the outer wall 41 through the inverted conical anchor bolts, and connect the back plate 23. The plate 23 and the wall are separated by a 5-10mm thick FRP backing plate to prevent thermal bridge effect; then the secondary keel 22 (for example, 50×50×3 angle steel can be used) is welded to the main keel 21 to form an integral cantilevered structure. The skeleton 20; the external wall insulation 42 is subsequently installed;

Step 2: Install the FRP inner groove drainage board 10 on the frame 20, and then install the FRP outer trim panel 30 on the frame 20. The FRP outer trim panel 30 includes an outer facade decorative panel 31 located on the outer elevation of the gutter and a panel located on the eaves. Bottom decorative plate 32 on the bottom surface of the groove; between the FRP inner groove drainage plate 10 and the skeleton 20, between the FRP outer decorative plate 30 and the skeleton 20 can be connected by dovetail nails but not limited to self-tapping nails, and the connection can be additionally 5 -10mm thick FRP backing plate;

Step 3. Use hand lay-up process to weld the joints 11 of the FRP inner tank drainage board 10, and the joints include direct joints and male and female corner joints; hand lay-up adopts unsaturated polyester resin with the same viscosity at 350-750mPa·s as the matrix , The alkali-free glass fiber mat with a specification of 300-900g/m ² is a reinforcing material and cured at ambient temperature.

By adopting the above method, gutters of different lengths and heights can be produced to fixed lengths, assembled flexibly and widely used.

Since the FRP inner groove drainage board is integrally manufactured by the pultrusion process, the present invention has complete waterproof performance. , The alkali-free glass fiber mat is a reinforcing material that is cured at ambient temperature, and the waterproof performance of the joints can reach the same waterproof performance as the board itself; FRP material is lightweight, high-strength, corrosion-resistant, and durable. The system has the same lifespan. Compared with the cast-in-place concrete process, FRP is easy to install and simple in construction, which can reduce the construction period and save costs.

The above descriptions are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. FRP prefabricated gutters are characterized in that: they are assembled from FRP inner groove drainage board, skeleton and outer trim panel, and the FRP inner groove drainage panel and outer trim panel are fixedly connected to the inner side and outer side of the skeleton respectively; The FRP inner tank drainage board is made of 4800TEX roving with a mass content of 35-45% and an alkali-free glass fiber mat with a specification of ^300-900g /m2 as reinforcing materials, and is unsaturated with a viscosity of 350-750mPa·s. Polyester resin as the matrix is made by pultrusion process. 2. The FRP assembled gutter as claimed in claim 1 is characterized in that: the waterproofing at the joint of the FRP inner groove drainage board is welded by FRP hand lay-up process, and the hand-lay-up process adopts the same viscosity at 350. -750mPa·s unsaturated polyester resin as matrix, alkali-free glass fiber mat with specifications of 300-900g/m ² as reinforcing material and cured at ambient temperature. 3. The FRP prefabricated gutters according to claim 1, characterized in that: the outer trim panel is a FRP outer trim panel, and the FRP outer trim panel is also made of 4800TEX roving with a mass content of 35-45% And the alkali-free glass fiber mat with a specification of 300-900g/m ² is used as the reinforcing material, and the unsaturated polyester resin with a viscosity of 350-750mPa·s is used as the matrix and is made by pultrusion process. 4 . The FRP prefabricated gutter according to claim 3 , wherein the FRP outer trim panel comprises an outer facade decorative panel located on the outer elevation of the gutter and a bottom surface decorative panel located on the bottom surface of the gutter. 5 . 5. FRP prefabricated gutters as claimed in claim 3, characterized in that: the mechanical properties of the FRP inner groove drainage board and the FRP outer trim board both satisfy GB/T 31539-2015<structural fiber reinforced composite material profiles >Medium M17 grade. 6 . The FRP prefabricated gutters according to claim 1 , wherein the skeleton comprises a main keel, a secondary keel and a connecting back plate. 7 . 7. the construction method of FRP prefabricated gutters as claimed in claim 1, is characterized in that, comprises the steps: Step 1. Weld the main keel on the connecting backboard, fix the connecting backboard on the outer wall, and isolate the connecting backboard and the wall with FRP pads; then weld the secondary keel on the main keel to form an overall overhang skeleton; subsequently install external wall insulation; Step 2: Install the FRP inner groove drainage plate on the skeleton, and then install the outer trim plate on the skeleton; Step 3. Use hand lay-up process to weld the joints of the FRP inner tank drainage board. The hand lay-up adopts the same viscosity of 350-750mPa·s unsaturated polyester resin as the matrix and the size of 300-900g/ ^m2 of alkali-free glass fiber Felt cures at ambient temperature for reinforcement. 8. The construction method of FRP prefabricated gutter as claimed in claim 7, it is characterized in that: in step 2, described outer trim panel adopts FRP outer trim panel, and the FRP outer trim panel comprises a The outer facade decorative board and the bottom decorative board located on the bottom surface of the gutters are respectively fixed on the frame.

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