KR102351360B1 - Inverted T-shaped retaining wall using H-pile joint structure - Google Patents

Abstract

The present invention relates to a retaining wall structure, and more particularly, by constructing an H pile on the ground to construct a retaining wall and combining the retaining wall on the upper part of the structure, the construction becomes easier, and the heel by the bearing capacity of the H file is minimized. It relates to a retaining wall using an H-pillar joint structure that can improve workability by providing an H-pillar joint structure that can make the connection between the retaining wall structure and the H-pille more robust at the part where the retaining wall structure is coupled to the H-pillar .
To this end, the retaining wall using the H-pillar joint structure according to an embodiment of the present invention includes an H-pillar that is vertically inserted into the ground, a PC retaining wall that is inserted and constructed on top of the H-pille to form a retaining wall, and an upper end of the H-pille. It is provided in the portion and is inserted into the PC retaining wall and includes a joint structure for fixing the bonding state of the PC retaining wall and the H-pillar.

Description

Retaining wall using H-pile joint structure {Inverted T-shaped retaining wall using H-pile joint structure}

The present invention relates to a retaining wall structure, and more particularly, by constructing an H pile on the ground to construct a retaining wall and combining the retaining wall on the upper part of the retaining wall, the construction is made easier, and the heel is minimized by the bearing capacity of the H file. It relates to a retaining wall using an H-pillar joint structure that can improve workability by providing an H-pillar joint structure that can make the connection between the retaining wall structure and the H-pile more robust at the part where the retaining wall structure is coupled to the H-pillar .

In general, it is possible to increase the support strength by installing a retaining wall that can reinforce the ground, such as a cut surface or a river.

There are a method of constructing such a retaining wall by masonry of the retaining wall block, a method of constructing by pouring concrete on site, and a method of constructing a retaining wall pre-fabricated in the form of PC (Precast Concrete) on site.

Here, in the construction of the PC-type retaining wall on site, the lower heel portion that is in horizontal contact with the floor surface to be constructed is widened so that stable construction is possible, and the retaining wall is prevented from overturning or collapsing, and the bearing capacity can be increased.

However, the amount of earthwork increases as the heel area becomes wider, and backfilling increases in the space between the support surface of the retaining wall and the heel, and it is also necessary to secure a site for construction.

In relation to this, in Prior Document 1 (Patent Publication No. 10-2012-0125805 Split-Type Precast Concrete Retaining Wall and Method for Manufacturing the Same), a configuration in which the foundation is installed in a prefabricated manner is disclosed.

However, in Prior Document 1, the back heel of the foundation protrudes and extends, so earthworks increase and backfilling must be made sufficiently, and the problem arises that the projecting range is widened by occupying the site as much as it protrudes.

Prior Document 1 (Patent Publication No. 10-2012-0125805 Split-type precast concrete retaining wall and manufacturing method thereof)

The present invention has been devised to solve the above problems, and in constructing the retaining wall, the PC-type retaining wall structure can be fixed to the ground with an H-pillar, and thus the size of the heel required for fixing the ground is minimized to minimize the amount of earthwork An object of the present invention is to provide a retaining wall using an H-pillar joint structure that can reduce, reduce backfill, reduce site, and the like.

The retaining wall using the H-pillar junction structure according to an embodiment of the present invention for solving the above problems is the H-pillar 100 inserted vertically into the ground, and the retaining wall is inserted and constructed on top of the H-pille 100. A junction structure 300 provided at the upper end of the PC retaining wall 200 and the H pile 100 forming the ) is characterized in that it contains.

Here, the PC retaining wall 200 is provided on the other side of the straight wall body 210 for supporting the soil and soil, the front heel 220 supporting the straight wall body 210 not to fall due to the earth pressure, and the front heel 220. It is embedded in the soil side, characterized in that it includes a stepped heel 230 that protrudes in a stepped shape.

And the bonding structure 300 is provided with an H-file casing 310 having a space formed therein so as to cover the upper end of the H-file 100 and protruding outward of the H-file casing 310 . However, while supporting the inner circumferential surface of the H-pille coupling part 240 in the state of being inserted into the H-pilling coupling part 240 formed to be emptied to the inside of the PC retaining wall 200 on the outside, the H-file casing 310 and the H-file coupling It is characterized in that it includes a reinforcing piece 320 forming a space between the parts 240 to be filled with mortar.

The retaining wall using the H-pillar joint structure according to an embodiment of the present invention has the following effects.

First, in constructing the retaining wall, there is an effect that the earth pressure can be more firmly supported by supporting the soil side using the H pile.

Second, when combining the PC retaining wall and the H-pillar, there is an effect that can be combined more firmly by using a joint structure.

Third, a relatively short stepped heel that supports the soil side floor and can be fixed by insertion of an H-pillar at the buried position is provided, thereby reducing the amount of earthwork, backfilling, and the site required for construction.

1 is an overall perspective view of a retaining wall using an H-pillar junction structure according to an embodiment of the present invention;
2 is an exploded perspective view of a retaining wall using an H-pillar joint structure according to an embodiment of the present invention;
3 is a construction state diagram of an inverted T-type retaining wall in a retaining wall using an H-pillar joint structure according to an embodiment of the present invention;
4 is a construction state diagram of an L-shaped retaining wall in a retaining wall using an H-pillar joint structure according to an embodiment of the present invention;
5 is a cross-sectional view taken along line II of a retaining wall using an H-pillar junction structure according to an embodiment of the present invention;
6 is a cross-sectional view taken along line II-II of a retaining wall using an H-pillar joint structure according to an embodiment of the present invention;
7 is a perspective view showing only the junction structure in the retaining wall using the H-pillar junction structure according to an embodiment of the present invention;
8 is a state diagram showing a state in which retaining walls using an H-pillar joint structure are connected to each other according to an embodiment of the present invention;
9 is a perspective view showing in detail a fixing coupler for closely constructing a PC retaining wall from a retaining wall using an H-pillar joint structure according to an embodiment of the present invention;
10 is a perspective view showing a state in which reinforcing bars are welded to the H pile of the retaining wall using the H pile junction structure for soundproof walls using the H pile junction structure according to an embodiment of the present invention;
11 is a cross-sectional view showing a state in which reinforcing bars are welded to the H pile of the retaining wall using the H pile joint structure according to an embodiment of the present invention;

The present invention relates to a retaining wall constructed on a cut surface, a soil surface, etc., and in particular, a joint structure is provided between the H-pillar and PC retaining wall constructed in the ground to improve workability, to be able to construct in a more accurate position, and to firmly secure the construction state In addition to being able to increase the durability, it is characterized in that the size of the heel can be minimized by the supporting force of the H-pillar.

Hereinafter, a retaining wall using an H-pillar joint structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall perspective view of a retaining wall using an H-pillar junction structure according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a retaining wall using an H-pillar junction structure according to an embodiment of the present invention.

1 and 2, the present invention is largely constructed to be buried vertically in the ground and has a bearing capacity from the ground, the H pile 100, and the H pile 100 is coupled to the upper part of the construction, such as a soil surface or a cut surface, etc. The PC retaining wall 200 supporting the It is configured to include a bonding structure 300 that further strengthens the bonding force.

Due to this, in constructing the retaining wall on the soil surface or the cut surface, more robust construction is possible, and the construction state can be maintained firmly. It is guided precisely to the correct position and can be constructed.

3 is a construction state diagram of a retaining wall using an H-pillar joint structure according to an embodiment of the present invention.

Referring to FIG. 3 , the PC retaining wall 200 includes a straight wall 210 that is provided to extend vertically upwardly to support a soil surface or a cut surface, and the straight wall body 210 supports a soil surface or a cut surface, etc. The front heel 220 provided to extend perpendicular to the straight wall 210 at the lower opposite side to support the PC retaining wall 200 not to fall due to earth pressure, and the front heel 220 from the lower part of the straight wall 210 ) and is protruded in the opposite direction to be embedded in the soil surface or the cut surface, and is configured to include a stepped heel 230 supporting the straight wall 210 .

At this time, the H-file 100 is inserted into the lower portion of the stepped heel 230 and the H-file coupling part 240 to which it is coupled is formed.

Due to this, the stepped heel 230 is supported firmly by the supporting force of the H file 100 while minimizing the protruding portion, and as the size of the heel is minimized, the amount of earthwork, backfilling, site required for construction, etc. can be reduced. there will be

4 is a construction state diagram of the L-shaped retaining wall in the retaining wall using the H-pillar joint structure according to an embodiment of the present invention.

Referring to FIG. 4 , the PC retaining wall 200 may be manufactured in an L-shape rather than an inverted T-shape.

At this time, the H-pillar 100 is inserted into the lower portion of the straight wall 210 in the L-shaped retaining wall, and the H-pillar coupling part 240 to which they are coupled is formed.

Due to this, even without the heel, it is firmly supported by the supporting force of the H-pillar 100, and thus it is possible to reduce the amount of earthwork, backfilling, site required for construction, and the like.

5 is a cross-sectional view taken along line II of a retaining wall using an H-pillar joint structure according to an embodiment of the present invention, and FIG. 7 is a perspective view showing only the joint structure in the retaining wall using the H-pillar joint structure according to an embodiment of the present invention, and FIG. 8 is a state in which the retaining wall using the H-pillar joint structure according to the embodiment of the present invention is connected to each other This is the state of use shown.

5 to 8 , the PC retaining wall 200 is formed in the form of a pocket on the lower portion of the PC retaining wall 200 and inserted into the ground and the H file 100 embedded in the construction is inserted and combined with an H file coupling part. 210 is included.

And the PC retaining wall 200 is formed with a mortar injection hole 250 capable of injecting mortar into the H pile 100 is inserted.

After the PC retaining wall 200 is constructed in the H pile 100, as the mortar is injected into the mortar inlet 250, the PC retaining wall 200 and the H pile 100 can be more firmly maintained in the construction state.

On the other hand, as the PC retaining wall 200 is continuously connected, a foundation connecting groove 211 capable of continuously connecting and constructing the PC retaining wall 200 to the construction location is formed on one side of the straight wall body 210 in the longitudinal direction. , on the other side where the basic connection groove 211 is formed, a basic connection protrusion 212 formed to correspond to the basic connection groove 211 is formed.

Due to this, as the foundation connection groove 211 and the foundation connection protrusion 212 are fitted with each other, it is possible to construct the PC retaining wall 200 to be continuously connected at the correct position, and the bearing capacity between the PC retaining wall 200 after construction is increased. It is reinforced to maintain a more robust construction state.

At this time, since the PC retaining wall 200 and the other PC retaining wall 200 are connected to both sides to which the foundation connection groove 211 and the foundation connection protrusion 212 are coupled, a water stop material 260 that can prevent flooding and water leakage. ) is provided.

The water repellent material 260 can prevent submergence and leakage, and also prevent damage or cracking of the structure due to a buffering effect when an external force is applied.

And on the outside of the water stop material 260, a finishing material 270 for uniformly finishing the outer surface to which the PC retaining wall 200 is connected is constructed to improve the appearance, and to block the gap between the PC retaining wall 200 is connected. It is possible to prevent the water stop material 260 from being damaged or the appearance from being damaged due to the inflow of foreign substances or external factors.

Referring to FIGS. 1 to 7 , the bonding structure 300 includes an H-file casing 310 having a space formed therein so as to cover the upper end of the H-file 100 and the H-file casing. Doedoe projecting to the outside of the 310, while supporting the inner peripheral surface of the H-pille coupling part 240 in the state inserted into the H-pillar coupling part 240 formed to be emptied to the inside of the PC retaining wall 200 on the outside, the H-file A space to be filled with mortar is formed between the casing 310 and the H-pillar coupling part 240 , and it is configured to include a reinforcing piece 320 forming an inclined surface that becomes wider from the upper part to the lower part.

Here, the reinforcing piece 320 is a first reinforcing piece 321 protruding from the H-pillar casing 310 in the thickness direction of the PC retaining wall 200 and a second reinforcing piece protruding in the longitudinal direction of the PC retaining wall 200 . (322) is included.

At this time, as the first reinforcing piece 321 protrudes in the thickness direction of the PC retaining wall 200, it forms an inclined surface that becomes wider from the top to the bottom, and the angle of the inclined surface is 1°, and the second reinforcing piece 322 in the longitudinal direction of the PC retaining wall 200, in the protruding, doedoe to form a slope that widens from the top to the bottom, the angle of the slope is made of 2˚.

Due to this, when the PC retaining wall is coupled to the junction structure 300, it is guided to the correct position and can be easily constructed.

And a mortar injection hole 311 communicating with the mortar injection hole 250 formed in the PC retaining wall 200 is formed in the upper center of the H-pillar casing 310 .

For this reason, when mortar is injected through the mortar injection hole 250 after construction, mortar flows into the mortar injection hole 311, and the remaining mortar flows into the outside of the H pile casing 310 while the H pile 100 and the PC retaining wall ( 200) and the bonding structure 300 can be maximized.

On the other hand, when mortar is introduced into the first reinforcing piece 321 and the second reinforcing piece 322 in a state in which the bonding structure 300 is covered with the H pile and coupled to the PC retaining wall 200, the mortar is filled with H A plurality of filling holes 323 that can more firmly maintain the construction state of the pile 100 and the PC retaining wall 200 and the bonding structure 300 are formed.

Due to this, the mortar is introduced between the H-pile casing 310 and the H-pile coupling part 240 , and the introduced mortar is again filled with the filling hole 323 to further strengthen the fixing force in the vertical direction of the H-pille 100 . Thus, it is possible to more firmly maintain the construction state of the H-pillar 100 and the PC retaining wall 200 .

9 is a perspective view showing in detail a fixing coupler for closely constructing a PC retaining wall in a soundproof wall foundation structure using an H-pillar joint structure according to an embodiment of the present invention.

Referring to FIG. 9 , when the PC retaining wall 200 is constructed, in a state in which the PC retaining wall 200 is inserted into the H pile 100 , the PC retaining walls 200 constructed side by side are fixed so that they can be in close contact with each other. A coupler 400 is provided.

The fixing coupler 400 inserts the strand 10 into the fixing hole 280 that is formed through the fixing hole 280 in the longitudinal direction of the PC retaining wall 200 to bring the plurality of PC retaining walls 200 into close contact with each other by the strand 10 . It is possible to reinforce the support strength by fixing it.

The fixing coupler 400 is inserted into the fixing hole 280 from both sides of the PC retaining wall 200, and the inside of the PC retaining wall 200 is a coupler 410 forming a narrower inwardly inclined surface, and the coupler ( 410), the strand 10 is inserted through the center, and is provided to form an inclined surface that becomes narrower toward the inside of the coupler 410, and as it is inserted into the coupler 410, the strand 10 is firmly It is configured to include a wedge 420 for fastening and fixing.

Here, the strand 10 is connected through the fixing hole 280 of the PC retaining wall 200, and is connected in parallel along the direction in which the PC retaining wall 200 is constructed, and each strand 10 is a strand connecting spring. It is connected by 430 .

And a coupler connection bolt 440 is provided on the outside to which the strand is connected, the coupler connection bolt 440 is threaded in opposite directions on both sides, and is bolted to the inside of the coupler 410, PC retaining wall When both sides of the 200 are connected to each other, they are fastened while pushing the wedge to the inside of the coupler 410 as the coupler connection bolt 440 is rotated.

At this time, the coupler connection bolt 440 acts equally on the coupler 410 and the wedge 420 provided symmetrically on the other PC retaining wall 200 facing each other, so that the PC retaining wall 200 is in close contact with each other and the strand 10. It is tightened more firmly by the silver wedge, and the PC retaining walls 200 can be installed in close contact with each other in parallel.

Due to this, it is possible to construct a plurality of PC retaining walls 200 more firmly in close contact with each other, and even if an external force such as a vehicle accident occurs after construction, it is possible to minimize damage to the retaining wall by maintaining the bonding state firmly.

10 is a perspective view showing a state in which reinforcing bars are welded to the H pile of the foundation structure for a soundproof wall using the H pile junction structure according to an embodiment of the present invention, and FIG. 11 is an H pile junction according to an embodiment of the present invention It is a cross-sectional view showing the state of construction with reinforcing bars welded to the H-pillar of the foundation structure for soundproof walls using the structure.

10 and 11, when the H file 100 is inserted into the bonding structure 300, the upper portion of the H file 100 is filled with mortar inside the bonding structure 300, so the H file ( A reinforcing bar 110 capable of reinforcing the bonding strength between the 100 ) and the bonding structure 300 is further provided.

The reinforcing bar 110 is provided in a plurality of vertical and side by side on the upper part of the H pile 100, and is provided in multiple layers to form a rectangle along the circumference of the H pile 100 to reinforce the vertical and horizontal cohesion at the same time as the soundproof wall. It is possible to make the construction state of the

In the present invention made as described above, in the construction of the retaining wall, the H pile is vertically inserted into the ground, and when the PC retaining wall is constructed thereon, a joint structure is provided between the H file and the PC retaining wall, and mortar is injected after construction. As a result, the bonding structure makes the connection between the H-pillar and the PC retaining wall more robust, thereby increasing durability.

10: strand 100: H file
110: rebar 200: PC retaining wall
210: straight wall 211: base connection groove
212: base connection projection 220: front heel
230: stepped heel 240: H file coupling part
250: mortar inlet 260: water stop material
270: finishing material 280: fixing hole
300: junction structure 310: H file casing
311: mortar injection hole 320: reinforcement piece
321: first reinforcing piece 322: second reinforcing piece
323: filling hole 400: fixing coupler
410: coupler 420: wedge
430: strand connection spring 440: coupler connection bolt

Claims (3)

H-file 100 inserted vertically into the ground;
PC retaining wall 200 inserted into the upper part of the H-pillar 100 to form a retaining wall; and
It is provided at the upper end of the H-pillar 100, is inserted into the PC retaining wall 200, and a bonding structure 300 for fixing the coupling state of the PC retaining wall 200 and the H-pillar 100; In including,
The PC retaining wall 200 is provided on the other side of the straight wall body 210 for supporting soil and soil, and the front heel 220 and the front heel 220 for supporting the straight wall body 210 so as not to fall due to the earth pressure. To be embedded in the, including a stepped heel 230 that protrudes in a stepped shape,
The bonding structure 300 is provided with an H-file casing 310 having a space formed therein so as to cover the upper end of the H-file 100 and protruding outward of the H-file casing 310 . , while supporting the inner circumferential surface of the H-pillar coupling part 240 in the state inserted into the H-file coupling part 240 formed to be empty inside of the PC retaining wall 200 on the outside, the H-file casing 310 and the H-file coupling part Includes a reinforcing piece 320 forming a space between the mortar is filled (240),
The reinforcing piece 320 includes a first reinforcing piece 321 protruding from the H-pillar casing 310 in the thickness direction of the PC retaining wall 200 and a second reinforcing piece 322 protruding in the longitudinal direction of the PC retaining wall 200 . ), including
When mortar is introduced into the first reinforcing piece 321 and the second reinforcing piece 322 in a state in which the bonding structure 300 is covered with the H pile and coupled with the PC retaining wall 200, the mortar is filled with the H pile ( 100) and the PC retaining wall 200 and the retaining wall using the H-pillar joint structure, characterized in that a plurality of filling holes 323 that can firmly maintain the construction state of the joint structure 300 are formed.
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