KR100665041B1 - Assembly pc culvert and the spatial-temporal structure - Google Patents

Abstract

A prefabricated PC culvert is provided to prevent crack formation and to increase strength against ground subsidence or external stress by forming steel wire insertion holes in the X or U shape, inserting steel wires to the X or U shaped steel wire insertion holes and tensioning in the X or U shape. A prefabricated PC culvert(100) contains steel wire insertion holes(101) formed on four corners to insert steel wires(1), and X or U shaped steel wire insertion holes(110) formed on right and left walls(102,103) to insert steel wires and tensioned to cross each other in the X or U shape using a tensioner. A construction structure for the prefabricated PC culvert comprises the steps of connecting many prefabricated PC culverts to form steel wire insertion holes of right, left walls of the PC culverts in the X or U shape, inserting steel wires to steel wire insertion holes of four corners of the PC culverts, pulling both ends of the steel wire using a tensioner and fixing to tension the steel wires strongly, inserting steel wires to the X or U shaped steel wire insertion holes of the right, left walls of the PC culverts and fixing one side, and pulling the outer side using a tensioner, and then fixing to tension the steel wires in the X or U shape.

Description

Assembly PC culvert and the spatial-temporal structure

1 is a state connecting the rigidity horizontally through the wire insertion hole formed in the four corners of the culvert as a conventional design.

2 is a state in which the steel wire is horizontally connected to a plurality of other steel wire insertion holes formed horizontally while simultaneously connecting rigidity through the steel wire insertion holes formed at four corners of the culvert as a conventional design.

3A and 3B are state diagrams in which " X " type steel wire insertion holes are formed in the left and right wall surfaces of the connection part of the PC culvert for implementing the present invention;

Figure 3a is a perspective view showing the main configuration.

Figure 3b is a side view of the connection state.

4A and 4B are state diagrams in which " X " type steel wire insertion holes are formed in the flange portions formed on the left and right connection ends of the PC culvert to realize the present invention;

Figure 4a is a perspective view showing the main portion configuration.

Figure 4b is a side view of the connection state.

5A and 5B are state diagrams in which "U" -type steel wire insertion holes are formed on the left and right side walls of the connection part of the PC culvert in order to realize the present invention.

Figure 5a is a perspective view showing the main portion configuration.

Figure 5b is a side view of the connection state.

Figure 6 is a state in which a coating layer is formed on the inner and outer surfaces while mixing the steel fibers during the manufacture of PC culvert to realize the present invention.

♣ Explanation of symbols for the main parts of the drawing

1,2: steel wire 100: PC culvert

100a: flange portion 101,110: steel wire insertion hole

102 left wall surface 103: right wall surface

200: steel fiber 300: coating layer

The present invention relates to a prefabricated PC culvert and its coupling structure,

More specifically, in the manufacture of prefabricated PC culverts, by mixing and curing steel fibers in the concrete mortar before curing, to manufacture PC culverts to prevent cracking and reinforce the strength of the PC culverts,

When assembling the PC culvert on the left and right side walls of the PC culvert, form a steel wire insertion hole to form "X" or "U" shape, and insert the steel wire into the steel wire insertion hole, and then fix the other side to the tensioner. By pulling and fixing the steel wires to tighten the wires, the connection of the PC culverts by the wires tightened to the "X" or "U" type makes the connection of the PC culverts very strong. The part does not open or sink.

In general, PC culverts (Precast Concrete Box Culvert) are used for facilities such as water and sewage, electric power, communication, and common areas.

PC culvert used as such a facility is to be assembled directly in the field, as shown in Figure 1 attached to the steel wire insertion hole 11 is formed in the four corners of the prefabricated PC culvert 10,

In assembling the PC culverts 10, the PC culverts 10 are connected in the longitudinal direction, and after the steel wires 1 are inserted into their wire inserting holes 11, both sides are well known in general. When pulled and fixed to the steel wire (1) to tighten the tension by horizontally tightened steel wire (1) by the PC culvert 10 is to be connected firmly.

However, in the connection structure of the PC culvert 10, the steel wire 1 is in a state of tension tightening only in the longitudinal direction, i.e., in the horizontal direction, so that a concentrated load occurs on the outer upper side or ground subsidence due to the soft ground at the bottom. When this occurs, that is, when a concentrated stress is generated perpendicularly perpendicular to the steel wire 1, the counter force (resistance) is structurally very weak, so that the PC culverts 10 are partially settled and their connection parts are opened and separated and separated, thereby resulting in watertightness. There was a problem that caused the degradation.

In order to solve the above problems, as shown in FIG. 2, a flange 10a provided with a plurality of steel wire insertion holes 12 horizontally is formed at a connection portion of the PC culverts 10. ,

When the PC culverts 10 are coupled to each other, the wires 2 are inserted into the wire insertion holes 12 provided in the flanges 10a, and the wire clamping holes 12 are tensioned, but the wire insertion holes 12 are also horizontally twisted. Since the steel wires 2 are tensioned only in the horizontal direction, when the concentrated load occurs on the outer upper side or the ground subsidence phenomenon occurs due to the soft ground at the bottom as in the above-mentioned electron, that is, orthogonal to the steel wire. When concentrated stress is generated vertically, the counter force is very weak structurally, and the culverts are partially settled, and their connection parts are opened and separated and separated, and thus watertightness is deteriorated.

Therefore, in order to solve such a weakness, a very large number of steel wire insertion holes 12 are formed horizontally in the flange 10a, and a large number of steel wires 2 are inserted into these wire insertion holes 12 daily. The tension caused by tensioning the tensioner (2) was more uncomfortable to the tension tightening occurred.

In other words, it is difficult to shorten the air because it is cumbersome and demanding, and it takes a lot of time in construction, and the problem of construction cost increases due to waste of time and manpower and the inconvenience of citizens due to the long air. There was no.

On the other hand, the conventional PC culverts (10) are reinforced inside because of their bulky and concrete cured, but soon afterwards there was a risk of water leakage due to cracks on the inside and the outside, and the strength was weakened partially. There are various problems, such as being easily broken and unable to fulfill the role of the service.

The present invention has been made in view of the above problems,

In the manufacture of prefabricated PC culvert, it is possible to prevent cracking and reinforce the strength of PC culvert by manufacturing PC culvert by mixing and curing steel fiber to concrete mortar before curing.

When assembling the PC culvert on the left and right side walls of the PC culvert, form a steel wire insertion hole to form "X" or "U" shape, and insert the steel wire into the steel wire insertion hole, and then fix the other side to the tensioner. By pulling and fixing, the steel wires are tensioned, so that the PC culverts withstand the horizontal and vertical loads by the steel wires tightened in the "X" type or "U" type, so it is very strong to support the ground stress, Its purpose is to ensure that the joints of the culverts do not open or sink.

Hereinafter, the present invention for achieving the above object will be described in more detail based on the accompanying drawings, FIGS. 3A to 5B.

3A to 3B, the PC prefabricated culvert 100 of the present invention basically comprises a PC prefabricated culvert 100 having a steel wire insertion hole 101 formed in four corners in a longitudinal direction thereof. Steel wire insertion holes 110 are formed on the left and right wall surfaces 102 and 103 of the culvert 100, but when the PC culverts 100 are assembled, the steel wire insertion holes 110 form an “X” at a connection portion that is in contact with each other. To form,

When the steel wire insertion hole 110 is formed in the flange portion 100a formed at the left and right connection ends of the PC culvert 100, as shown in FIGS. 4A to 4B, the PC culverts 100 are assembled. By forming the steel wire insertion hole 110 to form an "X" in the flange portion (100a) in contact with each other,

Insert the steel wire 2 into the wire insertion hole 110, each forming an "X" shape, and pull both sides at once or pull the other side with a known conventional tensioner (not shown) while fixing one side. By fixing the steel wire (2) to tighten the tension by the "X" type of steel wire (2), the PC culvert 100 is very strong to withstand the horizontal and vertical loads, even under the action of external stress The coupling portion of the PC culvert 100 is configured so as not to open or sink.

In addition, the prefabricated PC culvert 100 of the present invention forms a steel wire insertion hole 110 on the left and right wall surfaces 102 and 103 of the PC culvert 100 as shown in the accompanying drawings, Figures 5a to 5b. By assembling the PC culvert 100 by forming a steel wire insertion hole 110 to form a "U" in the connection portion abutting each other,

Insert the steel wires 2 into the wire inserting holes 110 forming the “U” shapes, respectively, and pull both sides at once or pull the other side with a tensioner (not shown) while fixing the steel wires (not shown). 2) the tension between the PC culvert 100 by the steel wire (2) tightened to the "U" type is very strong to withstand the horizontal and vertical loads, but the ground pit PC 100 (100) even under the action of external stress ) May be configured to prevent opening or subsidence.

Wherein the prefabricated PC culvert 100 of the present invention as shown in FIG. 6 as an example in the accompanying drawings in the manufacture of the prefabricated PC culvert 100 is mixed with the steel fiber 200 to the concrete mortar and curing the PC culvert ( 100) After forming the body, by coating a coating such as tar on the inner and outer surfaces thereof to form a coating layer 300 to prevent cracking of the PC culvert (100) body and reinforce the strength, as well as penetration of moisture and air By preventing the oxidation of the steel fiber 200 by blocking the construction can be configured to be durable and long life.

Referring to the state of use of the prefabricated PC culvert 100 of the present invention configured as described above are as follows.

When connecting a plurality of prefabricated PC culvert 100 is configured as shown in Figure 3a attached to the wire inserts formed on the left, right wall surface 102, 103 of the PC culvert 100 as shown in Figure 3b Steel wire insertion hole 110 is connected to form a "X" in the connection portion which is in contact with each other by the ball (110).

Then, after inserting the steel wire (1) through the wire insertion hole 101 formed in the longitudinal direction at their four corners, pull both ends of the steel wire (1) with a tensioner (not shown), respectively, and then fixed to the steel wire (1) Tighten this horizontally.

Then, the wire (2) is inserted into the "X" type steel wire insertion hole 110 formed in the connection portion of the left and right wall surface of the PC culvert 100 to be in contact with each other, and the other side of the tensioner (undo Pull) and fix it to complete the construction by allowing the steel wire (2) to be tightened to the "X" type.

This time, when connecting a plurality of prefabricated PC culvert 100 configured as shown in Figure 4a attached to the Figure 4b attached to the flange portion provided at the left and right connection end of the PC culvert 100 ( The steel wire insertion hole 110 is connected to the flange portion 100a which is in contact with each other by the steel wire insertion hole 110 formed in the 100a forming an "X" shape.

Then, after inserting the steel wire (1) through the wire insertion hole 101 formed in the longitudinal direction at their four corners, pull both ends of the steel wire (1) with a tensioner (not shown), respectively, and then fixed to the steel wire (1) Tighten this horizontally.

Then insert the steel wire (2) in the "X" type steel wire insertion hole 110 formed in the flange portion (100a) of the PC culvert 100 and hold the other side with a tensioner (not shown) in the fixed state of one side Complete the construction by pulling and fixing the steel wire (2) to tighten.

In this way, they are tensioned horizontally with the wire 1 through the wire insertion hole 101 formed in the four corners in the longitudinal direction, respectively,

"X" type steel wire insertion hole 110 formed in the left and right wall surfaces 102 and 103 of the PC culvert 100,

Since the steel wires 2 are tension-fastened to each other in the "X" -type steel wire insertion hole 110 formed in the flange portion 100a formed at the left and right connection ends of the PC culvert 100, respectively. ,

Coupling force of the connection parts of the PC culvert 100 is in contact with each other is very high, the strength of the PC culvert 100 to withstand the horizontal load and vertical load is very strong by the steel wires (2) that are staggered to each other in the "X" type ground Settling or joining part of the PC culvert 100 does not open or sink even under the action of external stress.

In addition, when connecting a plurality of prefabricated PC culvert 100 is configured as shown in Figure 5a attached to the wire insert hole 110 provided on the left, right side of the PC culvert 100 as shown in Figure 5b. Steel wire insertion hole 110 is connected to form a "U" in the connection portion which is in contact with each other by.

Then, after inserting the steel wire (1) through the wire insertion hole 101 formed in the longitudinal direction at their four corners, pull both ends of the steel wire (1) with a tensioner (not shown), respectively, and then fixed to the steel wire (1) Tighten this horizontally.

Then, the wire (2) is inserted into the "U" -type wire insertion hole 110 formed in the connection portion of the left and right wall surface of the PC culvert 100 in contact with each other and the other side in the state fixed to the tensioner (undo Pull) and fix it so that the steel wire (2) is tensioned into a "U" shape to complete the construction.

Even in this way, the PC culverts 100 are tensioned horizontally at the same time through the steel wire insertion hole 101 formed in the four directions in the longitudinal direction,

The steel wire 2 is tensioned as if the steel wire 2 is "U" type in the "U" type in the left and right wall surfaces 102 and 103 of the PC culvert 100 to support the connection portion. So,

Coupling force of the connection parts of the PC culvert 100 is in contact with each other is very high by the steel wire (2) tightened in the "U" type PC culvert 100 is very strong to withstand the horizontal load and vertical load, but the ground The coupling part of the PC culvert 100 does not open or sink even in the action of external stress.

In the above description (4) is a groove portion for connecting the steel wire (1), another unexplained symbol (3) is a finishing material, the groove portion 4 can be formed inside the PC culvert (100). As shown in FIG. 4A as an example, steel wires 1 formed on the upper side and connected horizontally may be selectively connected to each other.

On the other hand, when manufacturing the prefabricated PC culvert 100 of the present invention as shown in Figure 6 as shown in Figure 6 by mixing the steel fibers in the concrete mortar and curing the PC culvert (100) to form the body of the inner and outer surfaces thereof When the coating layer 300 is formed by applying a coating agent such as tar, the strength and the binding strength of the concrete mortar are increased by the steel fiber 200, thereby preventing the occurrence of cracks in the PC culvert 100 and increasing the strength. Of course, greatly reinforced

Since the penetration of moisture and air is blocked to prevent oxidation of steel fibers, damage to the constructed PC culverts 100 is prevented as much as possible, so that it can be used for a long time.

PC culverts of the present invention as described above by mixing and curing the steel fiber to concrete mortar before curing in the manufacture of prefabricated PC culvert to form a PC culvert body and by applying a coating such as tar on the inner, outer surface thereof,

The even distribution of steel fibers prevents cracking of PC culverts, greatly strengthens the strength, and prevents oxidation of steel fibers, which can be used without damage for a long time.

In addition, when the PC culvert is connected, the steel wire insertion hole is configured to form an "X" type or "U" type at the connection portions of the left and right sides which contact each other.

By inserting the steel wire and tensioning the steel wire using a tensioner, the steel wire tensioned in the "X" type or "U" type, and

Basically, the complementary action of the steel wire which is tensioned horizontally to the steel wire insertion hole formed at the four corners of the PC culverter makes the connection of the PC culverters very strong and the bonding force is high, so the strength to withstand the horizontal load and the vertical load is very strong. However, there is an advantage that the joint part of PC culvert does not open or sink even under the action of external stress.

As a result, the present invention has almost no cracking and excellent strength of PC culvert, and at the time of construction, the wire insertion hole is formed on the left and right sides of the connection part without the need for tensioning a very large number of steel wires horizontally as before. In case of U type, only one wire should be tightened in each case. If the wire insertion hole forms "X" type, only two wires in each case should be tightened. Therefore, the construction is very convenient and the air can be shortened. Of course, after construction, the connection state is very good and the bonding force is greatly increased, so that the strength to withstand the external stress acting vertically or horizontally is a very innovative invention that can be used safely without damage for a long time.

Claims (8)

delete delete In constructing the prefabricated PC culvert 100, the steel wire insertion hole 101 is formed in the four corners in the longitudinal direction, Form another steel wire insertion hole 110 on the left and right wall surfaces 102 and 103 of the PC culvert 100, but when the PC culvert 100 is assembled, the wire insertion hole 110 is connected to the contact portion " Configured to form a U ", The prefabricated PC culvert 100 is produced by mixing the steel fiber 200 to concrete mortar separately from the reinforcement (not shown) during manufacture and curing it to form a PC culvert (100) body evenly distributed steel fiber 200 To prevent cracking and reinforcement of the strength, but to prevent the oxidation of the steel fiber 200 by forming a coating coating layer 300 to prevent the penetration of moisture and air, such as tar on its inner and outer surfaces, Prefabricated PC culvert, characterized in that made. delete delete delete When the PC culverters 100 are assembled to the left and right wall surfaces 102 and 103 of the known PC culvert 100 where the steel wire insertion holes 101 are formed in the four corners in the longitudinal direction, another steel wire is connected to each other. Insertion hole 110 is formed to be connected to form a "U" shape, The prefabricated PC culvert 100 is cured by mixing the steel fiber 200 to prevent cracking and reinforcement of the body when manufacturing, but to prevent the oxidation of the steel fiber 200, moisture, such as tar on its inner and outer surfaces and To prepare a prefabricated PC culvert 100 by forming a coating layer 300 coated with a coating agent that can prevent the penetration of air, When connecting the PC culverts 100, the steel wire 1 is inserted through the steel wire insertion hole 101 formed in the four corners thereof in the longitudinal direction, and then pulled at both ends by a tensioner (not shown) and then fixed by the steel wire At the same time tightening (1) horizontally, The steel wire 2 is inserted into the “U” type wire insertion hole 110 formed at the connection portions of the left and right wall surfaces 102 and 103 which are in contact with each other, and the tensioner (not shown). By using the steel wire (2) is tightened as if holding the connection portion in the "U" type, As with the horizontally tightened steel wire (1) and the tensioned steel wire (2) to hold the connection portion in the "U" type, the PC culverts (100) are very strong to withstand horizontal and vertical loads At the same time being constructed so that the coupling part of the PC culvert 100 does not open or sink even under the action of sinking or external stress, Prefabricated PC culvert construction structure, characterized in that the coating layer 300 is constructed so as to prevent the oxidation of the steel fiber (200). delete

Images