EP2034095A1

EP2034095A1 - Installation structure for earth retaining wall

Info

Publication number: EP2034095A1
Application number: EP07253512A
Authority: EP
Inventors: Kyoung Hae Park
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-05
Filing date: 2007-09-05
Publication date: 2009-03-11

Abstract

An installation structure for an earth retaining wall is disclosed, in which the upper and lower ends of a corrugated and inclined earth plate (2) are bent in a direction of a plane part of an intermediate side, and an earth plate (2) stacked up and down is prevented from widening by installing a widening prevention member which prevents a widening of up and down inward bent parts contacting with an earth plate which is stacked and inserted between H-beam (1) wing parts at a front end of an earth plate fixture (3) which is threaded and installed between an inner surface of a H-beam wing part and a back surface of the earth plate and allows the earth plate to come closer to the wing part. In addition, a channel shaped bracket (21) capable of slide-inserting the earth plate (2) into the H-beam (1) wing parts at a plane part of both ends of the earth plate for thereby inserting the earth plate between the H-beams (1). Even when a narrow earth plate is inserted between the wider wing parts of the H-beam, the earth plate is stably installed in place. A wire rope (7) is installed at a plurality of H-beams (1) for thereby preventing the neighboring H-beams (1) from being widened.

Description

TECHNICAL FIELD

The present invention relates to an installation structure for an earth retaining wall, a plate for an earth retaining wall, a plate fixture for an earth retaining wall, and an installation structure of an earth retaining wall. Embodiments described herein particularly relate to an installation structure for an earth retaining wall in which the upper and lower ends of a corrugated and inclined earth plate are bent in a direction of a plane part of an intermediate side, and an earth plate stacked up and down is prevented from widening by installing a widening prevention member which prevents a widening of up and down inward bent parts contacting with an earth plate which is stacked and inserted between H-beam wing parts at a front end of an earth plate fixture which is threaded and installed between an inner surface of a H-beam wing part and a back surface of the earth plate and allows the earth plate to come closer to the wing part. In addition, a channel shaped bracket capable of slide-inserting the earth plate into the H-beam wing parts at a plane part of both ends of the earth plate for thereby inserting the earth plate between the H-beams. Even when a narrow earth plate is inserted between the wider wing parts of the H-beam, the earth plate is stably installed in place. A wire rope is installed at a plurality of H-beams for thereby preventing the neighboring H-beams from being widened.

BACKGROUND ART

A known earth retaining wall installation structure is developed in various forms. Since the embodiments described herein relate to installing a corrugated earth plate such as a road guide rail plate between H-beams. A known earth retaining wall installation structure in which a corrugated earth plate is installed between the H-beams will be described first. A known earth retaining wall installation structure having a corrugated earth plate is disclosed in the Korean utility model number 1999-21560 (The title of the device: Earth retaining wall installation structure) and the Korean utility model application number 2000-19432 (The title of the device: Panel for forming earth retaining wall structure).
According to the Korean utility model number 1999-21560 (the title of the device: Earth retaining wall installation structure, hereinafter, this is referred to as known device A), H-beams are installed at regular intervals, and a wall structure is installed between the H-beams for thereby forming an earth retaining wall. A corrugated steel plate reinforced with a bent surface of the wall structure is stacked up and down, and the up and down stacked corrugated steel plates are fixed using bolts and nuts. An angle steel plate is longitudinally attached to a side of the corrugated steel tubes inserted into the H-beams, and a screw jack is inserted between the angle steel tubes for thereby fixing the H-beams and the corrugated steel plate.
According to the above known device A, a rectangular frame structure having a plurality of bolt insertion holes is welded at four corners formed by corrugating a steel plate like a corrugated slate for thereby manufacturing a corrugated steel plate. When installing the same, each corrugated steel plate is inserted between the H-beams, and the bolts are inserted into the bolt holes of the up and down staked rectangular frame structure, and the up and down corrugated steel plates are fixed. In this case, when manufacturing a corrugated steel plate, the process for forming a plurality of bolt insertion holes at the rectangular frame structure and the process for welding the corrugated plate at the rectangular frame structure are further needed. In addition, it is needed to disadvantageously fix the up and down stacked rectangular frame structures using bolts, so that lots of work time and work processes are needed, and manufacturing and installing the corrugated steel plate cost too much including the cost for workers.
In addition, an angle steel tube is longitudinally attached to a side of the corrugated steel plate for preventing the movement of the corrugated steel plates inserted between the H-beams, and a screw jack is inserted between the angle steel tube and the H-beams for thereby fixing the H-beam and the corrugated steel plate. In this case, the construction cost for installing the earth retaining wall increases owing to the angle steel tube and the screw jack.
As another problem of the known device A, when the corrugated steel plate is inserted into the wing part of the H-beam, since it is wide between the H-beam and the wing part, and the corrugated steel plate is narrow, the corrugated steel plate inserted into the wing part of the H-beam may be distorted, so that the next work may be complicated.
According to the Korean utility model application number 2000-19432 (the title of the device: panel for earth retaining wall structure, hereinafter it is referred to as a known device B), upper and lower side plates having plane parts by vertically bending the same are formed at the upper and lower sides of the plate body formed by corrugating a steel plate, and protrusion and grooves are formed at the upper and lower side plates having the upper and lower plane parts formed by vertically bending the same, for thereby allowing the plate bodies to be assembled.
Left and right side plates are welded at both sides in a longitudinal direction of the plate body, and a pocket is formed at both sides of the plate body by welding the neighboring floors of the corrugated bent parts at both sides of a front side of the plate body and by welding the front fixing plate for thereby contacting with the left and right side plates.
In case that the construction is performed as disclosed in the known device B, the plate body is inserted between the H-beams, and each protrusion formed at the upper and lower side plates are engaged with the grooves for thereby fixing the stacked upper and lower side plate bodies. In a state that the front fixing plate contacting with the neighboring floors and the left and right side plates contacts with the wing part of the H-beam, a fixing clip is inserted into the front fixing plate and the wing part, so that the plate body is fixed at the wing part of the H-beam.
According to the known device B, the left and right side plates are separately welded at the left and right sides of the corrugated plate body and are welded at the welded left and right side plates and the front side of the floors using a surface fixing plate, so that manufacturing the plate body costs too much. In a state that the plate body is inserted between the H-beams, and a fixing clip is inserted into the front fixing plate and the wing part of the H-beam, when a certain weight is applied as the earth is stacked on the plate body, the protrusion assembling the up and down stacked plate bodies is escaped from the groove, and the gap is generated as it is widened between the upper and lower plate bodies. The gap gets more widened, so that the earth may be charged in the front side of the plate body. Since the fixing clip is structurally weak, it just initially fixes the plate body to the wing part of the H-beam. When an external impact is applied to the front side in which the fixing clip is fixed, the fixing clip may be widened, so that it is impossible to fix the plate body to the wing part of the H-beam, whereby there is a structural problem.
In both the known devices A and B, there is not provided a member for preventing the neighboring H-beams from being widened by means of the weight of the earth that collects at the earth retaining wall. So, when part of the H-beam longitudinally disposed is widened outwards, the earth plate (bent steel plate in the known device A, and plate body in the known device B) may be escaped from the widened H-beams, so that the earth may be discharged onto the road for thereby causing a very dangerous accident.

DISCLOSURE OF THE INVENTION

Accordingly, the present invention addresses the problems of the known art.
Embodiments of the present invention provide an installation structure for an earth retaining wall in which the upper and lower ends of a corrugated and inclined earth plate are bent in a direction of a plane part of an intermediate side, and an earth plate stacked up and down is prevented from widening by installing a widening prevention member which prevents a widening of up and down inward bent parts contacting with an earth plate which is stacked and inserted between H-beam wing parts at a front end of an earth plate fixture which is threaded and installed between an inner surface of a H-beam wing part and a back surface of the earth plate and allows the earth plate to come closer to the wing part. In addition, a channel shaped bracket capable of slide-inserting the earth plate into the H-beam wing parts at a plane part of both ends of the earth plate for thereby inserting the earth plate between the H-beams. Even when a narrow earth plate is inserted between the wider wing parts of the H-beam, the earth plate is stably installed in place. A wire rope is installed at a plurality of H-beams for thereby preventing the neighboring H-beams from being widened.
To achieve the above aims, in an installation structure of an earth retaining wall in which a plurality of H-beams are vertically installed on the ground at regular intervals, an earth plate made by corrugating a steel plate is stacked up and down between the H-beams, and an earth plate fixture is thread-installed between an inner surface of the wing part of the rear side between the front and rear wing parts of the H-beam and a back surface of the earth plate, and a holding part is provided at both sides of the front surface of the earth plate for holding the front sides of the H-beams, there is provided an installation structure of an earth retaining wall characterized in that a rope though hole is formed passing through a center connection part of an upper side of the H-beams, and a rope fixture is installed at the rope through hole of the H-beam installed at both ends of the H-beams, and a wire rope passing through the rope through hole of the H-beams is connected with the rope fixture of both sides; and the earth plate forms a thread bent part at the upper and lower sides of the plane part in a state that a plane part is formed at an intermediate portion, and the vertical bent part is vertically bent from the upper and lower ends of the upper and lower thread bent parts in a direction of the plane part of the center; and the earth fixture includes a thread rod having a nut at a rear side of the C shaped clip having the upper and lower vertical bent parts at the upper and lower sides of the front side, a rear support member having a support plate at a rear end of the tube into which a rear end of the thread rod is inserted, and a washer disposed between the rear side of the nut and the front side of the tube.
Further aspects of the present invention are set out in the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limiting of the present invention, wherein;

Figure 1 is a perspective view illustrating an installation structure of an earth retaining wall according to an embodiment;
Figure 2 is a partial enlarged perspective view of the part A of Figure 1;
Figure 3 is a partial enlarged cross sectional view illustrating the part A of Figure 1;
Figure 4 is a cross sectional view taken along the line B-B of Figure 3;
Figures 5A and 5B are cross sectional views illustrating the first and second examples of the earth plate fixtures according to an embodiment;
Figures 6A through 6C are views illustrating various examples of a widening prevention member installed at a front end of the earth plate fixture according to an embodiment; and
Figures 7A and 7B are a disassembled perspective view and a plane cross sectional view illustrating an installation state of a channel shaped bracket according to an embodiment.

DESCRIPTION

The installation structure of an earth retaining wall according to an embodiment will now be described with reference to Figures 1 through 7.
In the embodiment, a plurality of H-beams 1 are vertically installed at regular intervals on the ground. Earth plates 2 are formed by corrugating steel plates. Earth plates 2 are stacked up and down between the H-beams 1. An earth plate fixture 3 is thread-installed between the inner surface of the wing part 4 of the back surface of the H-beam 1 and the back surface of the earth plate 2. The earth plate 2 is inserted between the front and rear wing parts of the H-beam 1, in close contact with the wing part 4 of the front side of the H-beam 1. A holding member is provided at both sides of the front surface of the earth plate 2 for holding the earth plate 2 on the front side of the H-beam 1.
A rope through hole 6 passes through the center connection parts 5 of the H-beams 1, and a rope fixture 8 fixing an end of the wire rope 7 is installed in the rope through hole 6 of the H-beam 1 installed at both sides of the H-beams 1. A wire rope 7 passing through the rope through hole 6 of the H-beams 1 is connected at the rope fixture 8 of both sides.
As shown in Figures 2 and 4, the earth plate 2 has at least one corrugation which comprises an angled bent part 10 which formed at the upper and lower sides of a plane part 9, where the plane part 9 is at an intermediate portion as it is made by corrugating a steel plate. The vertical bent part 11 is vertically bent at the upper and lower ends of the threaded bent part 10 of the upper and lower sides in a direction of the plane part 9 of the center. When the earth plate 2 is inserted between the front and rear wing parts 4 of the H-beam 1 and contacts with the vertical bent part 11 of the upper and lower ends. Here, the earth plate fixture 3 is called a two-thread earth plate when it has two corrugations or threaded bent parts 10, and it is called a three-thread earth plate when it has three corrugations or threaded bent parts 10. The earth plate 2, is inserted between the H-beams 1 and is preferably made of a two-thread through four-thread structure based on its workability.
As shown in Figures 2, 4, 5 and 6A, the earth plate fixture 3 comprises a threaded rod 15 engaged at a rear side of the C-shaped clip 14 with a nut 16. The C-shaped clip 14 has upper and lower vertical parts 12 and 13 at the front upper and lower sides respectively. Accordingly, the C-shaped clip 14 can be slide-inserted from a lateral side into the vertical bent part 11 of the upper and lower sides of earth plates 2 contacting with upper and lower sides. The earth plate fixture 3 further comprises a back surface support plate 17, which in use is supported by the inner surface of the wing part 4 of the rear side of the H-beam 1. A tube 18 is provided at the rear side of the C-shaped clip 14. The rear end of the threaded rod 15 is inserted into tube 18, and a washer 20 is disposed between a rear end of the nut 16 and a front end of the tube 18.
As shown in Figure 5A, in the earth plate fixture 3, the tube 18 is welded at the clip 14, and the thread rod 15 engaged with the nut 16 is welded at the support plate 17, and the washer 20 is disposed between the end of the tube 18 and the nut 16.
Alternatively, as is shown in Figure 5B, in the earth plate fixture 3 the tube 18 is welded at the support plate 17, and the thread rod 15 engaged with the nut 16 is welded at the clip 14, and the washer 20 is disposed between the end of the tube 18 and the nut 16.
As shown in Figures 6A through 6C, the clip 14 of the earth plate fixture 3 may be manufactured in three types as follows. The clip 14 of Figure 6A is formed in a C-type in which the upper and lower vertical bent parts 12 and 13 are formed at the front upper and lower sides. The clip 14 of Figure 6B is formed in such a manner that a vertical bent part is formed at one of the front upper and lower sides. The clip 14 of Figure 6C is formed in a channel shape without the upper and lower vertical bent part.
A channel shaped bracket 21 is shown in Figures 7A and 7B. The channel shaped bracket 21 is installed in such a manner that the plane part 22a of the front side is clip-inserted into the wing part 4 of the front side of the H-beam 1 by installing the plane part 22 of the rear side of the channel shaped bracket 21 at both sides of the front side of the earth plate 2 using the bolt 23 and the nut 24.
The operations of the present invention will be described with reference to Figures 1 through 7.
In a state that a plurality of H-beams 1 are installed at regular intervals on the ground, as shown in Figures 3, 4 and 7. When it is needed to install the earth plate 2 between the H-beams 1, as shown in Figures 3, 4 and 7, the channel shaped bracket 21 is fixed at the plane part 9 of the earth plate 2 using the bolts 23 and the nuts 24. The opened portion of the bracket 21 is oriented outwards relative to the earth plate 2.
The earth plate 2 having the bracket 21 at the plane part of both side ends is inserted into the H-beams 1 installed at regular intervals, and the plane part 22a of the front side of the bracket 21 installed at the earth plate 2 contacts with the front surface of the wing part 4 of the front side of the H-beam 1. As shown in Figures 4 and 7B, in the bracket 21, the plane part 22 of the rear side of the channel shaped bracket 21 is fixed at the plane part 9 of the earth plate 2. The convex surface 10 of a corrugation at the front side of the earth plate 2 is closely contacted with the inner surface of the wing part 4 of the front side of the H-beam 1, and the plane part 22a of the front side closely contacts with the outer surface of the front side of the H-beam 1, so that the earth plate 2 is vertically installed while closely contacting with the inner surface of the wing part 4 of the front side.
In the above state, another earth plate 2 is inserted into the H-beams 1 using the bracket 21 in the same manner. As shown in Figures 4 and 6, the upper vertical portion 11 of the earth plate 2 previously installed is closely contacted with the lower vertical portion 11 of the lower side of the later inserted earth plate 2.
In a state that the upper and lower vertical bent parts 11 closely contact with each other, as shown in Figures 2, 5 and 6, the earth plate fixture 3 is inserted between the vertical bent part 11 of the closely contacting upper and lower sides of the earth plate 2 and the wing part 4 of the rear side of the H-beam, and the nut 16 is tightened. This causes the widening of the earth plate fixture 3 between the front side clip 14 of the earth plate fixture 3 and the rear side support member 19 of the rear side, so that the earth plate 2 is tightly caught by the inner surface of the front side wing part 4 and is stably fixed between the wing parts 4 of the front sides of the H-beam 1.
As shown in Figures 6A through 6C, the earth plate fixture 3 has three kinds of clips 14 of which the clip 14 is formed in a C shape, a shape in which the vertical bent part is installed at either upper side or lower side, and a channel shape. The above three kinds of clips stably support the vertical bent parts 11 of the upper and lower sides. The structures of the same are different a little, so that they may be differently adapted.
In the C shaped clip 14 of Figure 6A, as shown in Figures 2 and 4, the closely contacting upper and lower side vertical bent parts 11 are held like the upper and lower vertical bent parts 12 and 13 of the C shaped clip 14 surround. The clip 14 slides and is inserted from the side potion of the closely contacting upper and lower vertical bent parts 11, so that it is possible to prevent the upper and lower side earth plates 2 from being widened while holding the upper and lower side vertical bent parts 11.
As shown in Figure 6B, when the vertical bent part is installed at either upper side or lower side, the portion in which the vertical bent part is formed may be engaged at the vertical bent part 11 of the earth plate 2. The vertical bent part is installed upward one time and is installed downward one time alternately in a zigzag shape.
As shown in Figure 6C, since the clip 14 is formed in a channel shape, while contacting with the inclined portion of the thread bent part 10 of the closely contacting upper and lower side earth plates 2, the earth plate 2 can be pushed forwards.
When the interval between the front side clip 14 and the rear side support member 19 is widened by way of the engaging force of the thread rod 15 and the nut 16 of the rear side, the inclined parts of the closely contacting thread bent parts are pushed, and the inclined part of each thread bent part 10 is applied with a widening force, so that the upper and lower side earth plates 2 are closely contacted with no gaps.
When the installation of the earth plates 2 between the H-beams 1 is finished, the rope fixture 8 is installed at the H-beams 1. The rope fixture 8 is installed at the H-beams 1 at both ends of the wire rope 7. Wire rope 7 passes through the rope through hole 6 formed at each H-beam 1. Wire rope 7 is fixed at the rope fixture, so that the installation work of the earth plate 2 and the wire rope 7 is finished.
As the stable wire rope 7 is installed between the H-beams 1, even when earth is collected at a portion of the earth retaining wall of the present invention, and the weight is focused or locally applied to a small area of the earth retaining wall, the weight is distributed to the wire rope 7 holding the H-beams 1, so that the support force of the earth retaining wall is enhanced.
In a state that the installation of the present invention is finished, earth is filled at the rear side of the present invention. Since the vertical bent part 11 is bent in the vertical direction at the upper and lower sides of each plate 2, the earth retaining wall is able to withstand more weight. When earth is stacked at the rear side of the earth plate 2, the earth is inputted into the inner side of the vertical bent part 11 of the closely contacting upper and lower side earth plate 2, and a pressure is applied to the inclined portion, and the inclined portion of the closely contacting thread bent part 10 is forced to widen, so that the upper and lower side ends of the closely contacting earth plate 2 are pushed together.
As described above, in the installation structure of the earth retaining wall according to the embodiment, the upper and lower ends of a corrugated and inclined earth plate are bent in a direction of a plane part of an intermediate side, and an earth plate stacked up and down is prevented from widening by installing a widening prevention member which prevents a widening of up and down inward bent parts contacting with an earth plate which is stacked and inserted between H-beam wing parts at a front end of an earth plate fixture which is threaded and installed between an inner surface of a H-beam wing part and a back surface of the earth plate and allows the earth plate to come closer to the wing part. In addition, a channel shaped bracket capable of slide-inserting the earth plate into the H-beam wing parts at a plane part of both ends of the earth plate for thereby inserting the earth plate between the H-beams. Even when a narrow earth plate is inserted between the wider wing parts of the H-beam, the earth plate is stably installed in place. A wire rope is installed at a plurality of H-beams for thereby preventing the neighboring H-beams from being widened.
As the present invention may be embodied in several forms without departing from the essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within the scope as defined in the appended claims.

Claims

An earth retaining wall comprising:
a plurality of H-beams (1);

a plurality of plates (2) stacked between the H-beams (1), the vertical sides of each plate (2) engaged with respective recessed portions of adjacent H-beams (1); and

an plate fixture (3) comprising a clip portion (14) and a support plate (17) connected thereto by a length adjusting member (15, 16, 18, 20),
wherein the clip portion (14) is arranged for receiving two protruding portions provided along horizontal sides of adjacent plates (2).
A plate (2) for an earth retaining wall, the plate comprising a corrugated material and having a protruding portion (11) along a side, the protruding portion (11) for engaging with a clip portion (14) of a fixture in conjunction with the protruding portion (11) of an adjacent similar plate (2).
A plate fixture (3) for an earth retaining wall, the fixture comprising a clip portion (14) arranged for receiving two protruding portions of adjacent plates (2).
An apparatus according to any preceding claim, wherein the clip portion comprises a base with two protrusions, each protrusion being either straight or twin sectioned, with an angle between each section wherein the angle may be a right angle.
An apparatus according to any preceding claim, wherein the protruding portion of the plate (2) comprises a lip arranged substantially parallel to an average plane of the corrugations, the lip pointing towards the inside of the plate (2).
An apparatus according to any preceding claim, further comprising a holding means attached to the plate, the holding means arranged to engage with a front surface of a wing part (4) of the H-beam (1), whereas the plate engages with a rear surface of the wing part (4) of the H-beam (1).
An apparatus according to any preceding claim, further comprising a wire (7) fixed between any two H-beams (1) to prevent the H-beams being forced apart.
In an installation structure of an earth retaining wall in which a plurality of H-beams (1) are vertically installed on the ground at regular intervals, an earth plate (2) made by corrugating a steel plate is stacked up and down between the H-beams (1), and an earth plate fixture (3) is thread-installed between an inner surface of the wing part of the rear side between the front and rear wing parts 4 of the H-beam (1) and a back surface of the earth plate (2), and a holding means is provided at both sides of the front surface of the earth plate (2) for holding the front sides of the H-beams, an installation structure of an earth retaining wall characterized in that a rope though hole (6) is formed passing through a center connection part (5) of an upper side of the H-beams (1), and a rope fixture (8) is installed at the rope through hole (6) of the H-beam (1) installed at both ends of the H-beams (1), and a wire rope (7) passing through the rope through hole (6) of the H-beams (1) is connected with the rope fixture (8) of both sides; and the earth plate (2) forms a thread bent part (10) at the upper and lower sides of the plane part (9) in a state that a plane part (9) is formed at an intermediate portion, and the vertical bent part (11) is vertically bent from the upper and lower ends of the upper and lower thread bent parts (10) in a direction of the plane part (9) of the center; and the earth fixture (3) includes a thread rod (15) having a nut (16) at a rear side of the C shaped clip (14) having the upper and lower vertical bent parts (12) and (13) at the upper and lower sides of the front side, a rear support member (19) having a support plate (17) at a rear end of the tube (18) into which a rear end of the thread rod (15) is inserted, and a washer (20) disposed between the rear side of the nut (16) and the front side of the tube (18).
The structure of claim 8, wherein in said holding means, a plane part (22) of the rear side of the channel shaped bracket (21) is provided at the plane part (9) of both sides of the front side of the earth plate with the bolts (23) and the nut (24).