Drain guide apparatus for expansion joint of bridge

Abstract

The present invention relates to a drainage guiding device for an expansion joint of a bridge, which is installed in the expansion joint space between slabs of a bridge, and receives water leaked into the expansion joint space and guides it to one or both sides of the bridge to drain, thereby preventing it from flowing to the underside of the slab or the bridge bearing device. The present invention relates to a drainage guiding device for an expansion joint of a bridge, which is installed between slabs (1) of a bridge to guide water leaking through an expansion joint device (2) and drain it into a drain pipe installed on one or both sides of the bridge, comprising: a rubber expansion tube (10) that is installed to cover the expansion joint space between slabs (1) by being inserted from the bottom of the bridge, has a hollow interior to form an elastic deformation space (11), and has an inlet hole (12) formed along the longitudinal direction in the upper center; a plurality of wing pieces (20) that protrude at predetermined intervals along the longitudinal direction on both sides of the expansion tube (10) and adhere to the inner wall surfaces of the slabs (1) facing each other; and a tension wire (30) that is inserted into the inlet hole (12) and has both ends protruding outward from the expansion tube (10). It consists of fixing means (40) installed on each of the outer walls on both sides in the width direction of the above slab (1) and for fixing both ends of the tension wire (30) in a tensioned state.

Description

Technology Field

[0001] The present invention relates to a drainage guiding device for an expansion joint of a bridge, which is installed in the expansion joint space between the slabs of a bridge to receive water leaking through the expansion joint device and guide it to one or both sides of the bridge for drainage, thereby preventing it from flowing and moving to the underside of the slab or the bridge bearing device. Background Technology

[0003] Generally, a bridge is constructed by erecting multiple pillars, forming a steel frame on top of the pillars, pouring concrete into the steel frame to form the bridge deck, and typically applying asphalt to the upper surface of the deck to create conditions similar to those of a general road.

[0004] The length of the aforementioned bridge deck changes due to expansion and contraction caused by seasonal temperature fluctuations. To compensate for this expansion and contraction, the bridge deck is typically constructed by composing it with multiple slabs and connecting them via expansion joints to allow for expansion and contraction between them.

[0005] The bridge slab is protected from damage caused by expansion and contraction by the expansion joint, while simultaneously ensuring the smooth movement of vehicles.

[0006] Expansion joints are installed at the expansion joints of bridges and expand flexibly in accordance with the contraction and expansion of the slab, but they are structured in a way that is vulnerable to preventing water penetration.

[0007] To solve these problems, drainage members are installed at the expansion joints between slabs to prevent sewage or debris flowing into the expansion joints from entering the bridge bearings or metal beams that support the bridge slabs, and to ensure that the water is drained without flowing into the piers, separate leak prevention devices or drainage devices are installed.

[0008] A typical leak prevention device consists of a pair of frames installed symmetrically on the sides of the slabs facing each other at the expansion joint, and a rubber or soft drainage plate installed in a 'U' shape with both ends connected to the frames.

[0009] Technology regarding a leakage prevention device of this structure is disclosed in Korean Patent Publication No. 10-2012-0039149 (Repair device for preventing leakage in bridge joints) and No. 10-2012-0066206 (Buried type leakage prevention device for bridges).

[0010] The above technologies are devices installed between slabs equipped with expansion joints, wherein the technology is designed to install a rubber drainage plate by fitting it into the frame and connecting it while the frame is fixed or embedded in each slab.

[0011] However, as the fixing screws securing the frame to the slab are exposed to the outside and the connection points of the drainage plates connected to the frame are exposed in the middle of the path where leaked water travels, the leaked water corrodes the connection points between the fixing screws and the drainage plates. Consequently, problems such as the frame becoming loose or separating due to damage caused by corrosion have occurred, leading not only to repair issues but also to an increase in maintenance costs resulting from such repairs.

[0012] In order to solve these problems, the applicant has filed and registered a technology, such as Registered Patent Publication No. 2378610 (Drainage device for bridge expansion joints), which guides water leaking through an expansion joint to be discharged to one or both sides of the bridge.

[0013] However, all prior art technologies, including the patent registered by the applicant, are structured to be installed and used in expansion joint spaces where the spacing between slabs is wide, so there was a problem in that construction was very difficult or impossible in expansion joint spaces where the spacing between expansion joint spaces was very narrow, such as 100mm or less.

[0014] In addition, even if construction is possible, the installation of a drainage device with an unnecessarily large width regardless of the spacing of the expansion joint space has led to increased construction costs, and since all conventional technologies are structures installed at the bottom of the slab rather than in the space between the slabs, they are exposed to the outside during construction, resulting in an unattractive appearance. Prior art literature

[0016] Registered Patent Publication No. 10-2378610 (2022.03.21. Drainage device for bridge expansion joints) Published Patent Publication No. 10-2012-0039149 (20120425, Repair device for preventing leakage in bridge joints) Published Patent Publication No. 10-2012-0066206 (20120622, Embedded leakage prevention device for bridges) The problem to be solved

[0017] The present invention was devised to solve the aforementioned problems and provides a drainage guide device for an expansion joint of a bridge, which is installed in an expansion joint space between slabs with a width of 100 mm or less, and guides water leaked into the expansion joint space to one or both sides of the bridge to drain, thereby preventing the leaked water from flowing to the underside of the slab or the bridge bearing device. means of solving the problem

[0019] The solution means of the present invention for solving the above problem comprises a drainage guiding device for an expansion joint of a bridge, which is installed between slabs (1) of a bridge having an expansion joint space with a width of 100 mm or less, and which guides water leaking downward through an expansion joint device (2) to be drained into a drain pipe installed on one or both sides of the bridge, wherein the device comprises: a rubber expansion tube (10) that is installed to be inserted into the expansion joint space between slabs (1) from the bottom of the bridge to cover the expansion joint space, has a hollow interior to form an elastic deformation space (11), and has an inlet hole (12) formed along the longitudinal direction in the upper center; and a plurality of wing pieces (20) that protrude at predetermined intervals along the longitudinal direction on both sides of the expansion tube (10) and are in close contact with the inner wall surfaces of the slabs (1) facing each other. A tension wire (30) inserted into the inlet hole (12) and configured such that both ends protrude to the outside of the expandable tube (10); and a fixing means (40) installed on each of the outer walls in the width direction of the slab (1) and for fixing both ends of the tension wire (30) in a tensioned state.The expansion tube (10) is formed with a triangular cross-sectional shape so as to gradually expand from the top to the bottom, and the bottom of the expansion tube (10) is formed with an upwardly inclined surface (13) from both sides toward the center so that when the expansion tube (10) is inserted into the expansion joint space, the lower central part of the expansion tube (10) bends and protrudes into the elastic deformation space (11) while contracting. The wing piece (20) is formed on both sides of the expansion tube (10) with its tip facing upward at an angle of 80 to 100° relative to the surface of the expansion tube (10), and on both lower sides of the expansion tube (10), a catch piece (25) is formed with a length longer than the length of the wing piece (20) to guide the lower central part of the expansion tube (10) to bend while catching on the lower edge of the slab (1) when inserted into the expansion joint space. It is characterized by being formed as a single protruding unit, and having a filling material (50) provided in the elastic deformation space (11) to expand the expansion tube (10) through foam filling while preventing shrinkage deformation, thereby maintaining the wing piece (20) in a state of being in close contact with the inner wall surface of the slab (1).

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[0023] The above fixing means (40) is preferably composed of: a fixing bracket (41) that is fixed to both sides in the width direction of the slab (1) and has a fixing hole (42) formed on its surface; and a fixing wedge (45) that is formed in a wedge shape with a binding hole (46) formed on its inner side and configured to be divided into 2 to 3 parts, and is inserted into the fixing hole (42) in a state of close contact with the outer circumference of the tension wire (30) to fix the tension wire (30). Effects of the invention

[0025] According to the present invention, which is configured as described above, it can be installed in an expansion joint space with a width of 100 mm or less, thereby preventing the deterioration of the durability of the slab and bridge structure due to water leakage, as well as preventing corrosion of the bridge bearing device that supports the slab. Accordingly, it has the effect of reducing maintenance costs and preventing safety accidents.

[0026] Since multiple wing pieces are in close contact with the inner wall of the sleeve, as well as the catch piece is in close contact with the inner wall of the sleeve, leakage can be prevented. In particular, when foaming and curing the filler material in the elastic deformation space, the expansion of the expansion tube causes the wing pieces in contact with the inner wall of the sleeve to be pressed together with even stronger pressure, thereby providing a reliable watertight effect. Brief explanation of the drawing

[0028] FIG. 1 is a perspective view of a drainage guide device for an expansion joint of a bridge according to the present invention. FIG. 2 is an excerpt showing a fixing means for fixing a tension wire according to the present invention. FIG. 3 is a cross-sectional view of an expandable tube according to the present invention. FIG. 4 is a diagram showing the state of installation in which an expansion tube is inserted into a narrow expansion joint space with a spacing of 100 mm according to the present invention. Figure 5 is a cured state in which a filler is foamed and filled into the elastic deformation space in Figure 4. Specific details for implementing the invention

[0029] Hereinafter, a drainage guide device for an expansion joint of a bridge according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0030] As described above, the drainage guide device for an expansion joint of a bridge according to the present invention is installed in an expansion joint space formed between the slabs (1) of the bridge, and is a device for guiding water leaking through an expansion joint device (2) installed to provide elasticity to the upper side of the expansion joint space, and guiding it to a drain pipe (not shown) installed on one or both sides of the bridge to drain it.

[0031] In particular, the present invention is a drainage guide device installed in a very narrow expansion joint space rather than a wide expansion joint space.

[0032] The drainage guide device of the present invention consists of an expandable tube (10), a wing (20), a tension wire (30), and a fixing means (40).

[0033] The expansion tube (10) is a rubber tube having elasticity to allow expansion, and is formed with a width corresponding to the width of the bridge slab. It is inserted into the expansion joint space between the slabs (1) to cover the expansion joint space, thereby supporting water leaking through the expansion joint device (2) and guiding the leaked water to one side or both sides of the bridge.

[0034] The expansion tube (10) has a hollow interior to form an elastic deformation space (11), and an inlet hole (12) is formed along the longitudinal direction in the upper center to allow the tension wire (30) to be inserted and penetrate.

[0035] These expansion tubes (10) can be brought into the expansion joint space between slabs (1) by lifting them from the bottom of the bridge using the tension wire (30).

[0036] The wing portions (20) are protruded in multiple numbers at predetermined intervals along the longitudinal direction on both sides of the expansion tube (10), and are parts that come into close contact with the inner walls facing each other of the slabs (1) when the expansion tube (10) is inserted into the expansion joint space between the slabs (1). Through forced contact, this prevents water leaked through the expansion joint device (2) from falling downwards, and also guides the water to one or both sides of the bridge to drain it.

[0037] In one embodiment, the expansion tube (10) is formed with a cross-sectional shape that is approximately triangular so as to gradually expand from the top to the bottom, and the wing pieces (20) are formed at predetermined intervals on both inclined sides of the expansion tube (10).

[0038] As the expansion tube (10) is formed in a triangular shape, it can be easily inserted when the expansion tube (10) is lifted and inserted into the expansion joint space, and during the insertion process, the lower part of the expansion tube (10) undergoes elastic contraction deformation, and the wing pieces (20) formed on both sides of the expansion tube (10) can be closely attached to the inner wall surface of each adjacent slab.

[0039] At this time, the wing piece (20) is integrally formed with a tip portion protruding upward at an angle of 80 to 100° with respect to the surface of the expandable tube (10) on both sides of the expandable tube (10).

[0040] Accordingly, as the expansion tube (10) is introduced into the expansion joint space, a portion of the leading edge of the wing section (20) is bent and introduced in a state of close contact with the inner wall surfaces facing each other of the slab (1), and a groove is formed along the longitudinal direction between the two sides of the expansion tube (10), which is the upper space of the wing section (20), and the inner wall surface of the slab, so that water leaked through the expansion joint device (2) can move to one or both sides of the bridge along the groove formed on the upper side of the wing section (21).

[0041] As a portion of the leading edge of the wing (20) is forcibly attached to the inner wall surface of the slab, water can be effectively guided without leakage occurring at the attached portion.

[0042] At this time, since multiple wing sections (20) are formed, even if a very small amount of water leaks from the upper wing section, the lower wing section blocks it once more, thereby ensuring that there is no leakage.

[0043] Here, since the outer surface of the wing section (20) of the expansion tube (10) is formed as an inclined surface, even if the lengths of the wing sections are the same, the lower wing section protrudes further in the lateral direction than the upper wing section, so the contact area that contacts the inner wall surface of the slab is a wider area than that of the upper wing section.

[0044] Therefore, as the lower wing becomes more strongly sealed along with an increased contact area compared to the upper wing, it provides superior watertightness compared to the upper wing.

[0045] Meanwhile, when the above-mentioned expansion tube (10) is inserted into the expansion joint space, it is desirable to allow the expansion tube (10) to be easily contracted while maintaining elasticity so that it can spread out in both lateral directions of the expansion tube.

[0046] To this end, the lower portion of the expansion tube (10) is formed with an upwardly inclined surface (13) that slopes from both sides toward the center, and on both lower sides of the expansion tube (10), a catch piece (25) is formed integrally so as to protrude to catch on the lower edge of the slab (1).

[0047] The above-mentioned catch (25) is provided in a state where it is caught on the lower edge of the slab (1) when the expansion tube (10) is lifted and inserted into the expansion joint space. When the expansion tube (10) is lifted, pressure is applied and it is bent, and the lower central part of the expansion tube (10) is guided to bend. When the expansion tube (10) is inserted into the expansion joint space, the lower central part of the expansion tube (10) bends and protrudes into the elastic deformation space (11) and contracts, and maintains elasticity in the contracted state.

[0048] Here, the catch piece (25) is formed with a length longer than that of the wing piece (20) to increase the contact area with the lower edge of the slab, and when inserted into the expansion joint space, the catch piece (25) is bent to have a contact area with the inner wall surface of the slab that is greater than the contact area of ​​the wing piece (20), thereby providing a watertight effect to prevent any leakage that may occur.

[0049] The tension wire (30) is formed with a length longer than that of the expansion tube (10) and is inserted into the inlet hole (12) so that both ends protrude to the outside of the expansion tube (10).

[0050] These tension wires (30) have both ends fixed to the outer walls on both sides in the width direction of the slab (1) by means of fixing means (40). When fixing the tension wires (30), the tension wires (30) are tensioned while one end is fixed, and then the other end is fixed.

[0051] The above fixing means (40) is configured to fix a tension wire (30) in a tensioned state, and it is preferable that it be configured with a simple structure to reduce costs while increasing the convenience of the fixing work.

[0052] As an example of the above fixing means (40), it may be composed of a fixing bracket (41) that is fixed to both sides in the width direction of the slab (1) and has a fixing hole (42) formed on its surface, and a fixing wedge (45) that is formed in a wedge shape and is inserted into the fixing hole (42) in a state of close contact with the outer circumference of the tension wire (30) to fix the tension wire (30).

[0053] The fixed wedge (45) is formed in a wedge shape so that its outer diameter gradually expands from one end to the other, and is configured to be divided into 2 to 3 parts. When combined, a binding hole (46) is formed on the inside through which the tension wire (30) passes.

[0054] It is preferable that the fixed wedge (45), divided into 2 or 3 parts, is secured by a fixed ring (47) having a separate end portion so that the fixed wedge (45) is in close contact with the outer surface of the tension wire (30) and is not separated from the tension wire (30).

[0055] One end of the fixed wedge (45) is inserted into the fixed hole (42) and connected to the fixed bracket (41), and the other end of the fixed wedge (45) is connected to the fixed ring (47) so as not to be separated from the tension wire (30).

[0056] Meanwhile, the elastic deformation space (11) can be filled with a filler material (50) that has been foamed so that no empty space exists.

[0057] At this time, the expansion tube (10) expands due to elasticity by the foaming filler (50) and adheres more strongly to the inner wall surface of the slab (1), and the shrinkage deformation of the expansion tube (10) is blocked by the foaming and curing filler (50), thereby maintaining the state in which the wing piece (20) adheres firmly to the inner wall surface of the slab (1) and increasing the watertight effect.

[0058] Therefore, the adhesion force of the wing piece (20) that adheres to the inner wall surface of the slab is prevented from decreasing due to the shrinkage deformation of the expansion tube (10), thereby completely blocking any possibility of leakage that may occur. As a result, water is prevented from entering the bridge bearing device, which has the advantage of reducing bridge maintenance costs, such as replacement due to corrosion.

[0059] According to the present invention configured as described above, it is a very useful invention that can provide a perfect watertight effect by installing it in a very narrow expansion joint space of 100 mm or less, effectively supporting water leaking through the expansion joint device, guiding it toward the drainage pipe installed on one or both sides of the bridge, and preventing shrinkage deformation of the expansion tube and increasing adhesion to the inner wall surface of the slab through foam curing of the filler material, in addition to watertightness by the expansion tube and multiple wing pieces. Explanation of the symbols

[0061] 1: Bridge slab 2: Expansion joint 10: Stretch tube 11: Elastic deformation space 12: Inlet hole 13: Inclined surface 20: Wing section 25: Snagging section 30: Tension wire 40: Fixing means 41: Fixing bracket 42: Fixing hole 45: Fixed wedge 50: Filler

Claims

Claim 1 A drainage guiding device for an expansion joint of a bridge, installed between slabs (1) of a bridge having an expansion joint space with a width of 100 mm or less, for guiding water leaking downward through an expansion joint device (2) and draining it into a drain pipe installed on one or both sides of the bridge, comprising: a rubber expansion tube (10) installed to cover the expansion joint space between slabs (1) by being inserted into the expansion joint space between the slabs (1) from the bottom of the bridge, having a hollow interior to form an elastic deformation space (11), and having an inlet hole (12) formed along the longitudinal direction in the upper center; a plurality of wing pieces (20) protruding at predetermined intervals along the longitudinal direction on both sides of the expansion tube (10) and adhering to the inner wall surfaces of the slabs (1) facing each other; a tension wire (30) inserted into the inlet hole (12) and provided such that both ends protrude to the outside of the expansion tube (10); and the of the slab (1). Fixing means (40) installed on each of the outer walls on both sides in the width direction and for fixing both ends of the tension wire (30) in a tensioned state;It is constructed and installed by being inserted into the expansion joint space from the underside of the bridge, and the expansion tube (10) is formed with a triangular cross-sectional shape so as to gradually expand from the top to the bottom, and the bottom of the expansion tube (10) is formed with an upwardly inclined surface (13) from both sides toward the center so that when the expansion tube (10) is inserted into the expansion joint space, the lower central part of the expansion tube (10) bends and protrudes into the elastic deformation space (11) while contracting, and the wing section (20) is formed on both sides of the expansion tube (10) with its tip facing upward so as to have an angle of 80 to 100° with respect to the surface of the expansion tube (10), and on both lower sides of the expansion tube (10), when inserted into the expansion joint space from the underside of the bridge, the lower central part of the expansion tube (10) is guided to bend while catching on the lower edge surface of the slab (1). A drainage guide device for an expansion joint of a bridge, characterized in that a catch piece (25) is integrally formed protruding with a length longer than that of a wing piece (20), and a filler material (50) is provided in the elastic deformation space (11) to expand the expansion tube (10) through foam filling while preventing shrinkage deformation, thereby maintaining the wing piece (20) in a state of being in close contact with the inner wall surface of the slab (1). Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A drainage guide device for an expansion joint of a bridge, characterized in that, in claim 1, the fixing means (40) comprises: a fixing bracket (41) fixed to both sides in the width direction of the slab (1) and having a fixing hole (42) formed on its surface; and a fixing wedge (45) formed in a wedge shape with a binding hole (46) formed on its inner side, configured to be divided into 2 to 3 parts, and fixed to the tension wire (30) by being inserted into the fixing hole (42) and bound while in close contact with the outer surface of the tension wire (30).

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