KR0170076B1 - Working method for the combination of frp and concrete conduits working without framework applied sewage, road, railway, etc. - Google Patents

Abstract

The present invention relates to a method of constructing a composite culvert of FRP and concrete that can be installed without a formwork assembly and disassembly process, and is easy to install and maintain, and the FRP and concrete composite culvert of the present invention. The construction method forms a waterway and defines an inner space, an inner wall portion having a socket portion for connecting another FRP pipe to one end, and an outer wall integrally coupled with the lower end of the inner wall portion to form a space spaced by a predetermined distance from the inner wall portion. A manufacturing step of the FRP tube comprising a part; Digging the construction section and assembling floor reinforcement and concrete according to the construction plan; FRP pipe installation step of coupling the socket portion of the FRP pipe body on the bottom concrete to one end of the adjacent FRP pipe body and integrated by FRP liquid resin; Placing concrete in a space formed between an inner wall portion and an outer wall portion of the FRP tube to form a concrete body; After the concrete is hardened, it comprises the step of backfilling with soil.

FRP and concrete composite culvert of this structure shorten the air required for the installation and dismantling of the formwork, and it is possible to construct the culvert of complex shape because it is easy to manufacture the FRP pipe, and the flow of water due to the careless construction is not generated. As a result, excellent falling capacity can be obtained. In addition, since the FRP pipe can be combined by the FRP resin without a separate coupling means can be more easily installed.

Description

Sewage culverts in sewage treatment plants and water treatment facilities, sewage culverts in sewage and sewage wastewater, drainage culverts under roads, railways and bridges, sewage culverts in residential areas and industrial complexes, underground drainage culverts in urban buildings, and river open culverts Construction method of composite culvert of FRP and concrete without formwork

1 is a flow chart for the construction method of the culvert according to the present invention.

Figure 2 is a perspective view of the culvert FRP tube according to the present invention.

Figure 3 is an enlarged cross-sectional view showing a socket portion connected state of the culvert according to the present invention.

4 is a cross-sectional view showing a state in which the construction of the culvert according to the present invention is completed.

* Explanation of symbols for main parts of the drawings

1: FRP pipe 2: concrete body

11 inner wall portion 13 outer wall portion

15: base 16: socket portion

17: reinforcing hole 18: external joint

19: internal junction

The present invention is for the construction of sewage culverts, sewage, sewage, wastewater culverts, sewage culverts under roads, railroads, bridges, sewage culverts in residential areas, industrial complexes, underground drainage culverts, urban building underground drainage culverts, etc. The present invention relates to a method of constructing a composite culvert of FRP and concrete that can be applied without formwork.

As a conventional method of constructing a culvert, a method of constructing a reinforced concrete structure culvert using formwork or a method of assembling and constructing a culvert unit forming a part of a channel has been widely practiced. For the construction of culverts using formwork, the plywood formwork is manufactured and installed on the site, the rebar is processed and assembled, and concrete is poured to form a waterway. And complete the construction of the culvert by backfilling it with dirt. On the other hand, the construction of the prefabricated culvert is aligned in line with the uniformly manufactured culvert units in the work section of the dig operation, apply a binder such as epoxy resin to the joint of each culvert unit, turnbuckle or tension cable, etc. Construction is completed by combining each culvert unit using the same coupling means and backfilling it with soil.

However, the culvert construction method using the above-described formwork takes a considerable time to assemble and dismantle the formwork, and in order to dismantle the form, it is necessary to wait at least 3 days until the cast concrete is solidified, so that the work air is extended and the work is cumbersome. It was. In addition, since the shape of the conduit is formed by developing cast concrete, there is a problem in that a flowing obstacle is generated inside the pipe due to carelessness when constructing a culvert having a complicated shape. In addition, the construction method using the culvert unit has a problem that the construction is difficult because not only the coupling means necessary for the coupling of each culvert unit is required, but also requires a strong tensile force for the coupling.

The present invention has been made to solve the above problems, the object of the present invention is sewage culverts in sewage treatment plants, water treatment premises, sewage, sewage, wastewater culverts, drainage culverts of roads, railroads, bridges, housing districts, industrial complexes It is to provide a method of constructing composite culverts of FRP and concrete without construction, which can be applied to the construction of sewage culverts, urban building underground drainage culverts, and river open pit culverts.

Another object of the present invention is to provide a construction method of the FRP and concrete composite culvert that can easily perform a culvert construction of a complex shape.

Still another object of the present invention is to provide a construction method of FRP and concrete composite culvert, which can easily perform the joint joining operation of each culvert unit without a separate coupling means.

In order to achieve the above objects, the construction method of the FRP and concrete composite culvert according to the present invention is to form a waterway and define the inner space and the inner wall portion defining the inner space, the upper portion is opened and spaced apart by a predetermined distance from the side of the inner wall portion Forming an outer wall portion integrally coupled with a lower end of the inner wall portion, and one end of the inner wall portion in a longitudinal direction thereof has a manufacturing step of the FRP tube having a socket portion for connecting another FRP tube; Digging the construction section and assembling floor reinforcement and placing concrete according to the construction plan; FRP pipe installation step of aligning the FRP pipe in a line on the floor concrete and integrated by the FRP liquid resin; Placing concrete in a space formed between an inner wall portion and an outer wall portion of the FRP tube to form a concrete body; After the concrete is hardened, it comprises the step of backfilling with soil.

Hereinafter, with reference to the accompanying drawings, sewage culverts in sewage treatment plants and water treatment premises, sewage, sewage, wastewater culverts, sewage culverts under roads, railways, bridges, sewage culverts in residential districts, industrial complexes, underground building underground drainage The construction method of composite culverts of FRP and concrete, which are applied without formwork, which can be applied to construction of culverts and river cover culverts, will be described in detail.

1 is a flow chart for the construction method of the culvert according to the present invention, the construction method of the FRP and concrete composite culvert is the step of manufacturing the FRP pipe to a predetermined size and shape according to the construction plan, and the concrete floor of the construction scheduled section And a step of installing the FRP pipe body on the floor concrete, and a concrete body forming step and refilling concrete in a predetermined space formed in the FRP pipe body.

The manufacturing step of the FRP pipe is carried out at the factory according to the construction plan, and the FRP pipe (1) is advantageously manufactured hydraulically in consideration of the flow capacity and the shape of the waterway. 2 is a perspective view of the FRP tube according to the present invention, with reference to this will be described in detail the structure of the FRP tube.

The FRP pipe body 1 defines an inner space and defines an inner wall portion 11 forming a waterway, an outer wall portion 13 extending in correspondence with the outer surface of the inner wall portion, and a horizontal extension from the lower side of the inner wall portion to the outer side, so that the lower portion of the outer wall portion is lower. It consists of a support surface 16 coupled to. In this case, a predetermined space defined by the inner wall portion 11, the outer wall portion 18, and the support surface 16 is formed to provide a concrete pouring space.

A longitudinal end of the inner wall portion 11 is provided with a socket portion 16 extending radially outward to form a stage so as to be connected to the other FRP tube (1). In addition, the cross-sectional shape of the inner wall portion 11 forming the water channel is advantageously made hydraulically and may be provided in various ways depending on the size and shape of the culvert.

And, the reinforcing hole 17 is provided on the support surface 16 to increase the contact area so that it can be firmly positioned on the floor concrete to pass the reinforcing bar formed in the floor concrete.

While the manufacturing step of the FRP pipe body 1 of this configuration is in progress, the floor concrete pouring step is in progress.

In the floor concrete pouring phase, the trench is excavated at the scheduled section of construction, and the processing reinforcement of the floor reinforcement and concrete is poured according to the construction plan. At this time, some of the bottom reinforcing bar is bent upwards to be connected to the upper reinforcing bar.

Figure 3 is an enlarged cross-sectional view showing a socket connection state of the culvert according to the present invention, with reference to this will be described the installation step of the FRP pipe.

After the casting of the bottom concrete is completed, the FRP tube 1 is positioned so that the bottom reinforcing bar protruding from the bottom concrete passes through the reinforcing hole 17 of the FRP tube. The socket portion 16 of the FRP tube is coupled to the end of the adjacent FRP tube. Then, the bottom reinforcing bar and the vertical wall reinforcing bar are connected and the upper bar is assembled. At this time, the amount of rebar used should consider the upper load. When the reinforcing bar assembly is completed, the integration process of the FRP pipe is carried out. The FRP liquid resin is injected into the external joint part 18 formed by combining the socket part 16 and the other end of the FRP pipe body, and the FRP pipe is connected to the internal joint part 19. Resin is applied and adjacent FRP tubes are integrated with each other by FRP fusion.

When the FRP pipe body 1 is integrated and continuously aligned, concrete is poured into the space formed between the inner wall part 11, the outer wall part 13, and the support surface 16 of the pipe body to form the concrete body 1.

After the concrete (2) has hardened to some extent (7-8 hours), it is backfilled with soil to complete the construction of the FRP and concrete composite culvert.

The construction method of FRP and concrete composite culvert as described above shortens the air required for the installation and dismantling of the formwork.In particular, since the formwork is not needed, wait until the concrete is completely hardened and then remove the form and return the soil. The soil can be refilled immediately after 7-8 hours when the concrete hardens to a certain extent, thus reducing the air for more than two days. In addition, since the FRP pipes are manufactured in a batch at the factory, it is possible to culminate a complex structure, and excellent drainage ability can be obtained because water flow failure due to careless construction does not occur. In addition, since the FRP pipe can be combined by the FRP resin without a separate coupling means can be more easily installed.

Claims (3)

An inner wall portion 11 defining an inner space forming a water channel, and an upper portion thereof are opened and spaced apart from a side surface of the inner wall portion 11 by a predetermined distance to form a space, and are integrally combined with a lower end of the inner wall portion 11. The outer wall portion 13 is made, and the one end in the longitudinal direction of the inner wall portion 11 of the manufacturing step of the FRP tube (1) having a socket portion 17 for connecting another FRP tube; Digging the construction section, and laying the floor reinforcement and floor concrete according to the construction plan; A step of installing an FRP pipe body (1) for coupling the socket portion (16) of the FRP pipe body (1) to an end of an adjacent FRP pipe body (1) on the floor concrete and integrating it by an FRP liquid resin; Placing concrete in a space formed between the inner wall part 11 and the outer wall part 13 of the FRP pipe body 1 to form a concrete body 2; Sewage treatment plant, water treatment premises sewage culvert, sewage, sewage, wastewater culvert, drainage culvert of road, railroad, bridge bottom, residential area, characterized in that it comprises the step of filling the concrete body 2 back into the soil after it is hardened. A method of constructing composite culverts of FRP and concrete that can be applied to construction of complex sewage culverts in industrial complexes, underground drainage culverts in urban buildings, and stream open culverts. According to claim 1, wherein the installation step of the FRP pipe (1) Injecting the FRP liquid resin to the outer joint portion 18 of the FRP tube (1), by applying a FRP resin to the inner joint 19 a plurality of FRP tube (1) Sewage culverts in sewage treatment plants and water treatment premises, sewage culverts, sewage and wastewater culverts, drainage culverts under roads, railways and bridges, sewage culverts in residential areas and industrial complexes, underground building underground drainage culverts, Method of constructing composite culverts of FRP and concrete that can be applied without formwork that can be applied to construction such as river cover culverts. According to claim 1, After the installation step of the FRP pipe (1) a plurality of reinforcing holes (17) formed in the support surface 15 for connecting the inner wall portion 11 and the outer wall portion 13 of the FRP pipe body (1) Sewage treatment plant, water treatment premises sewage culvert, sewage, sewage, wastewater culvert, road railroad, bridge, characterized in that it further comprises the step of connecting the wall vertical reinforcement to the bottom reinforcement projecting upward from the floor concrete through A method for constructing composite culverts of FRP and concrete that can be applied to construction of drainage culverts in the lower part, sewage culverts in residential districts and industrial complexes, underground drainage culverts in urban buildings, and river open pit culverts.