KR200403933Y1 - The buoyancy prevention structure - Google Patents

Abstract

The present invention is formed with a flange to the upper surface and connected to the bottom of the flange, a plurality of permeable nets are fixed at equal intervals and provided with a permeable net at the bottom, through the lower slab through the lower side through the through hole side A buoyancy prevention structure using a side hole drainage structure, characterized in that it is provided with the opening and the opening of the oil hole tube, and the flange of the oil hole tube to be seated on the side opening hole side, starting from the axis transverse to the top surface By providing a structure to be provided,

By using the U-type retaining wall side openings in the existing underground roadway, it is possible to drain the groundwater easily and effectively without requiring other additional equipment, thereby preventing buoyancy generated by the groundwater. As it provides the effect and the buoyancy prevention structure by using the existing side hole, it is possible to shorten the construction cost and the air according to the installation, so it is economical and the effect is relatively good after a certain period of use or during the rainy season. After a period of large amount of groundwater drainage, by making it easy to clean the perforated pipes to guide the groundwater, the maintenance work due to the cleaning and the like, as well as the side hole that can be expected to significantly increase the service life It relates to a buoyancy prevention structure using a drainage structure.

Description

Buoyancy prevention structure using side drainage structure

The present invention relates to a buoyancy prevention structure using a side drainage structure that has been installed to prevent buoyancy generated in the retaining wall structure after the construction of a U-type retaining wall structure such as an underground driveway.

In general, when constructing a structure such as an underground roadway, self-weight (dead load) is generated by the structure, and buoyancy due to groundwater acts at the same time. In this case, buoyancy by groundwater is higher than the self-weight acting on the bottom of the structure. If (positive pressure) is large, the structure will rise and the structure will be greatly damaged as the pressure rises and decreases.

Therefore, in order to eliminate the adverse effect on buoyancy generated in the structures such as underground roads, there is an anchoring method (Permanent Anchor) that usually anchors the structure to the lower bedrock, and continuously drains from the bottom to act on the floor. Dewatering has been used to suppress buoyancy.

However, the anchoring method is a method of drilling to the rock layer and tensioning and setting more than the required load after inserting the strands, which is expensive in construction, long construction period, and a lot of water-resistant defects in the anchor drilling part, and corrosion of the tensioned wire Damage of the structure is easy to occur due to stress reduction, repair is difficult, and to remedy this, the re-stretching system also has a disadvantage that the construction cost is two to three times more expensive than the general case.

In addition, the drainage method is divided into a forced drainage method and a natural drainage method. The forced drainage method pumps the groundwater that has flowed into the water collecting well through an oil hole pipe buried in the lower part of the foundation, using an additional means such as a pump to discharge the discharge pipe. It is a method of draining to the outside through the natural drainage method, a natural drainage method is a method of draining the groundwater accumulated in the sump by allowing the groundwater to flow downward through the discharge pipe naturally according to the slope of the terrain.

According to the forced drainage method described above, the construction is simple and the initial construction cost is low, but the groundwater flowing through the collecting pipe is permanently installed and the pump and a number of additional devices must be installed in accordance with the drainage treatment. There is a disadvantage of having to bear a maintenance fee, and there is also a problem that causes settlement of the surrounding ground because the groundwater level is lowered.

In addition, the natural drainage method has the advantage of easy maintenance, but in order to carry out the natural drainage, construction costs such as the excavation of a separate ground and the design of a separate drainage line for connecting the drainage line to the adjacent stream or sewer pipe are required. There is a growing problem.

As mentioned above, in the current method for preventing buoyancy, the drainage method is advantageous in a condition where the ground is inclined, but the forced drainage method has to be permanently maintained, and the natural drainage method greatly increases the construction cost. There is a problem.

The present invention mainly provides a configuration to be applied to the drainage method, but does not require a separate pumping means or additional equipment, such as forced drainage method, and existing underground structures, such as natural drainage method, so as to solve the significant disadvantages, such as natural drainage method, especially underground The purpose of this is to prevent buoyancy provided by groundwater to structures such as underground roadways by allowing the groundwater to drain naturally by using side openings installed on U-type retaining walls such as driveways.

The present invention for achieving the above object, in the side opening 20 structure that is installed in the U-TYPE retaining wall body 10 side of the underground road, the flange 41 is formed on the upper surface and the flange 41 A plurality of permeable nets 60 'are fixed at equal intervals and connected to the lower part thereof, and the permeable net 60 is provided at the bottom thereof, and the lower slab through the side of the lower side through-hole 22 of the side opening 20 is provided. Perforated through-holes 40 to be inserted through the 30 and the flange (41) of the perforated pipe 40 to be seated on the side hole 20, the through hole 22 side to be fixed, transverse to the upper surface (51) To provide a buoyancy prevention structure using the side opening drainage structure, characterized in that the door 52 is provided with an opening and closing part 50 to open.

In addition, the present invention, the flange 41 having the insertion holes (41a, 61) for drilling the coupling holes (42, 42 ') up and down the perforated pipe (40), respectively, the corresponding coupling holes (41b, 62)) ) And the permeable net 60 to be separated and combined.

In addition, the present invention is provided with the hinge 44 on one side of the perforated tube 40 and the other side to be cut open so as to revolve around the hinge 40 in both directions, the insertion groove 47 into the inner circumferential surface of the perforated tube 40 Forming a plurality of fixed support 45 to be formed, and fastening the band 46 to the outer peripheral surface of the perforated tube 40.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

The present invention provides a configuration for preventing buoyancy caused by groundwater in the U-type retaining wall of the underground driveway as described above, by efficiently using the existing side opening 20, To compensate for the shortcomings in the drainage method as much as possible to provide a configuration to significantly reduce the cost of the installation, while anticipating the buoyancy effect.

As shown in Figure 1, but using the configuration of the side opening (20) pre-installed in the present invention drills a through-hole 22 of a predetermined diameter to the bottom bottom surface.

Reference numeral 21 is a grill body for covering the upper end portion of the side opening 20, to filter the foreign matter and the like flowing with the rainwater when the rainwater inflow.

The perforated pipe 40 is inserted into the through hole 22 side of the side opening 20, and by penetrating through the lower slab 30 side, when providing the positive pressure by the ground water flowing along the retaining wall body 10 side opening 20 As a means for inducing the flow to the side, as shown in Figure 2 so as to be seated on the periphery of the through-hole 22 by the flange 41 formed on the upper outer peripheral surface, the perforated net 60 to the lower end of the perforated pipe 40 It installs to filter out various foreign matter or earth and sand that can be included in the groundwater, to allow only groundwater to be guided, flow to the perforated pipe (40).

In addition, it is preferable to install a plurality of permeable net (60 ') spaced in the hole tube 40 as shown in Figure 3, through the bottom of the permeable net (60) is first filtered and the groundwater injured by positive pressure To filter out the remaining foreign matter or soil.

In this case, buoyancy can be prevented only when the floating flow of groundwater proceeds smoothly, but when the groundwater flows smoothly, foreign substances or earth and sand contained in the groundwater may leak to the side opening 20. If a plurality of water permeable networks (60, 60 ') are provided in order to filter out foreign matter or soil contained in the groundwater, problems such as buoyancy increase due to a decrease in the groundwater flow rate may occur.

Therefore, in view of such a point, in the present invention, the perforated mesh (Mesh) size of the permeable net (60, 60 ') which may be provided at the lower end and the inside of the perforated pipe (40), respectively, may be the perforated pipe ( 40) To gradually reduce the size of a plurality of mesh (60 ') mesh installed to be spaced along the inside, so that the flow rate is not lowered according to the resistance of the pitch (60, 60') according to the buoyancy pressure of groundwater desirable.

Such a design may be designed in consideration of the amount of groundwater and buoyancy pressure flowing into the side opening 20 and the retaining wall body 10 in a desired position.

Meanwhile, the perforated pipe 40 passing through the bottom surface of the side mouth 20 and penetrating the lower slab 30 side may be easily removed by cleaning from the side mouth 20 after use for a predetermined period of time. .

For example, as shown in Figure 4 can be configured to be separated by another embodiment of the perforated pipe 40, the perforated net 60 is coupled to the flange 41 and the lowest end up and down the perforated pipe 40, respectively. And, the hole tube 40 body is configured to open one side hinge 44 and the other side to be cut, the center around the hinge 44.

Here, the flange 41 and the permeable net 60 may have insertion holes 41a and 61 having a plurality of coupling holes 41b and 62 along the outer circumferential surface of the flange 41 and the permeable net 60 so that the flange 41 and the perforation net 60 may be inserted and fixed to each other. In order to form and to be coupled to the coupling holes 41b and 62, a plurality of coupling holes 42 'and 42 are drilled along the upper and lower outer circumferential surfaces of the perforated pipe 40 to be respectively fixed by the fasteners 43. To be able.

On the other hand, by forming a plurality of fixed support 45 spaced apart to form an insertion groove 47 for the insertion of the permeable net (60 ') to the inside of the perforated pipe 40 is open as described above, a predetermined time After the elapsed time, the perforated pipe 40 may be opened so that the permeable net 60 'may be withdrawn, cleaned, or replaced with another permeable net 60'.

Reference numeral 40 is a band for closely supporting the outer peripheral surface of the perforated tube 40 having such a configuration.

In order to be able to separate the perforated pipe 40 by this configuration and at the same time to facilitate the withdrawal of the perforated pipe 40 to the outside of the side opening 20, the space between the inner circumferential surface of the lower slab 30 and the outer circumferential surface of the perforated pipe 40 is separated. It is preferable.

The separation space does not need to be wide, and before the perforated pipe 40 is embedded in the lower slab 30, the perforated process has a larger diameter than the outer diameter of the perforated pipe 40.

The opening and closing part 50 is to be fixed to the flange 41 of the perforated pipe 40 which is seated in the through-hole 22 side of the side opening 20, as shown in Figure 2 to 3, the door 52 side Starting from the shaft 51, the door 52 is configured to open and close upward.

That is, when the positive pressure increases due to the rise of the groundwater level, the door 52 is opened only upward. When the positive pressure is low, the oil pipe 40 is unnecessarily introduced after rainwater or sewage in the underground road flows into the side opening. It is preferable to prevent the flow into the lower slab 30 and the like.

Hereinafter will be described the operating relationship of the present invention.

If the amount of groundwater flowing along the inside of the retaining wall body 10, such as an underground driveway, is increased, buoyancy is generated to float the structure, but if the buoyancy cannot be effectively controlled, that is, smooth drainage of the groundwater is not achieved. Failure to do so will seriously affect the structure.

In order to prevent buoyancy of the groundwater in the present invention, the groundwater providing buoyancy along the perforated pipe 40 penetrating the bottom surface and the lower slab 30 that is already installed in the existing by the hydraulic pressure of its own It is introduced by buoyancy.

At this time, various foreign matters contained in the groundwater, earth and sand are guided through the permeable network 60 spaced at equal intervals in the lower end of the perforated pipe 40, the opening and closing portion coupled to the upper surface of the perforated pipe 40 The door 52 of 50 is pushed up, and groundwater is drained along the side opening 20 by opening the door 52 about the shaft 51.

On the other hand, if the inside of the perforated pipe 40 to filter foreign matter, earth and sand remaining in the groundwater is blocked by the need or after a certain period such as the rainy season, the original purpose can not be achieved, or regularly Occasional cleaning, etc. is required, the perforated pipe 60 can be easily cleaned or replaced by the perforated pipe 40 as in the other embodiments of the present invention, as well as the maintenance cost accordingly remarkably Can be saved.

Therefore, according to the present invention, using the retaining wall side of the U-Type type in the existing underground roadway, it is possible to drain the groundwater easily and effectively without requiring other additional equipment, The effect which can prevent the buoyancy which arises can be anticipated.

In addition, according to the present invention, it is possible to provide a buoyancy prevention structure by using the existing side opening, it is possible to shorten the construction cost, air, and the like according to the installation can be expected an economic additional effect.

In addition, according to the present invention, after a period of use or after a period of relatively large amount of drainage of groundwater, such as the rainy season, to facilitate the cleaning of the perforated pipes to guide the groundwater, to facilitate the maintenance work according to the cleaning, of course, It is a very useful design that can expect the effect of significantly increasing the service life.

1 is a schematic cross-sectional view showing an installation state according to the present invention,

Figure 2 is an exploded perspective view of a state for applying a buoyancy prevention structure applied by the present invention to the existing side opening,

3 is a schematic cross-sectional view of the present invention according to FIG. 2.

Figure 4 is a perspective view showing another embodiment of the perforated tube adopted in the present invention.

Brief description of the major symbols in the drawings

10; Retaining wall body 20; Side mouth

21; Grille 22; Through

30; Lower slab 40; Merit

41; Flange 41a; parenthesis

41b; Engagement hole 42,42 '; Joiner

43; Diaphragm 44; Hinge

45; Fixed support 46; band

50; Opening and closing part 51; shaft

52; Door 60,60 '; Pitcher net

Claims (5)

In the sideway 20 structure installed in the U-TYPE retaining wall body 10 side of the underground road, The flange 41 is formed on the upper surface, and the plurality of pitching nets 60 'are fixed at equal intervals and connected to the lower end of the flange 41, and the pitching net 60 is provided at the bottom thereof, and the side opening 20 is provided. Perforated pipe 40 is inserted through the lower slab 30 through the lower bottom through-hole 22 side, Opening and closing portion 50 is to be fixed to the flange 41 of the oil hole pipe 40 which is seated in the side hole 20, the opening 22, the door 52 is opened from the shaft 51 to cross the upper surface Buoyancy prevention structure using side drainage structure provided with). The method of claim 1, The flange 41 and the permeable net having the insertion holes 41a and 61 in which the coupling holes 42 and 42 'are drilled up and down, respectively, and the corresponding coupling holes 41b and 62 are drilled. Buoyancy prevention structure using a side drainage structure comprising the 60) to be separated and combined. The method of claim 2, Buoyancy prevention structure using the side hole drainage structure comprising the one side hinge 44 and the other side to be cut open all around the hinge 40 in both directions. The method of claim 3, wherein Buoyancy prevention structure using the side port drainage structure comprising the formation of a plurality of fixing support 45 so that the insertion groove 47 is formed in the inner circumferential surface of the hole tube (40). The method of claim 3, wherein Buoyancy prevention structure using a side drainage structure comprising fastening the band 46 to the outer circumferential surface of the perforated tube (40).