KR102587939B1 - Non-drain sheet type bridge expansion joint - Google Patents

Abstract

The present invention relates to a non-drainage sheet type expansion joint that can effectively improve the drainage structure between the deck slabs of a bridge.
That is, the present invention includes first and second finger arms (10) (10') that are engaged with each other by finger grooves (11) to form expansion joints between the upper plate slabs (1) of the bridge; It is spaced apart from the bottom of the first finger arm 10 to form a drain passage 21, and an upward diaphragm 22 protrudes upward at one end, and a gap block to support the first finger arm 10 at the other end. Drainage plate (20) provided with (23); It is disposed at the lower part of the second finger arm (10'), one end is fixed to the upper slab (1) of the bridge together with the second finger arm (10'), and the other end extends to the upper area of the drainage passage (21). Cover plate 30 installed; And a sliding pad 60 formed of hard synthetic resin with a predetermined thickness so as to provide a flat surface 62 at the upper part and closely adhered to the bottom of the cover plate 30 by the load of the finger arm. do.
Using the non-drainage sheet type expansion joint device, the structure is improved to omit the drain sheet by forming a drain channel at the bottom of the finger arm, improving on-site constructability. In particular, the air cleaning method using compressed air is applied. This has the advantage of easy maintenance as the drain channel can be easily and automatically cleaned.

Description

Non-drain sheet type bridge expansion joint}

The present invention is a non-drainage sheet type expansion joint device, and more specifically, it relates to a non-drainage sheet type expansion joint device that can effectively improve the drainage structure without a drain sheet installed between the top slabs of a bridge.

Typically, the deck of a bridge, which is placed on top of a pier, naturally expands or contracts in length in the direction of the bridge due to seasonal temperature changes, so a joint gap of an appropriate size is formed in advance between two neighboring decks, and the joint gap is formed in advance. It is finished with an expansion joint.

Here, the expansion joint device includes a pair of support members arranged at a predetermined distance to face each other and provided with anchors on each outer surface, and a pair of finger arms engaged with each other at the horizontal ends of the support members, It consists of a drain sheet made of rubber disposed between the support members on both sides, but the construction of joining the drain sheet to the support members on both sides is difficult or cumbersome, and foreign substances easily accumulate on the drain sheet, requiring periodic cleaning and replacement. Maintenance is required.

Accordingly, in Registered Patent No. 10-2111779, the present applicant constructed an expansion joint structure with a structure that blocks rainwater or foreign substances from being discharged between the finger arms, and installed a front end of the plate-shaped base plate to enable construction without the drainage sheet in the expansion joint device. A vertical support is erected upward, and a finger assembly table for assembling the finger arm is formed at the rear end to connect the first and second support members respectively installed on both upper plates, and the lower part of the finger arm. A connection blocking plate that supports and blocks the space between the fingers to block water or foreign substances from being discharged between the fingers, and a connection blocking plate that is interposed between the first and second support members and the connection blocking plate so that the connection blocking plate is located in the middle. We have previously registered a technology that includes a gap maintenance member that holds the space together.

Additionally, in Registered Patent No. 10-2202700, the present applicant includes a base plate installed on one side of the upper slab, an upward support being formed at one end, and a first finger arm being bolted to the other outer end; A support block installed on an outer upper portion of the base plate to form an expandable space by spaced apart from the first finger arm and the base plate; It is installed on the upper slab on the opposite side where the base plate is not installed, and one end extends to overlap the base plate, forming a downward support at the end, and the other outer end is tightly coupled to the bottom of the second finger arm by a bolt to form a second finger. A cover plate that finishes the finger groove of the arm at the bottom; And an elastic foam installed in the expansion space corresponding to the area between the downward support of the cover plate and the support block and provided to close the finger groove of the first finger arm from the bottom, wherein the upper surface of the cover plate has an elastic foam in the width direction of the bridge. A technology for forming additional drainage grooves or stacking drainage plates with drainage grooves has been previously registered.

However, if the elastic foam installed in the expansion space is exposed to the external environment for a long time, it may deteriorate or the physical properties of the material may change, so the development of a non-draining sheet type expansion joint device that can replace it is required.

KR 10-2111779 B1 (2020.05.11.) KR 10-2202700 B1 (2021.01.17.)

In the present invention, a new technology was created to solve all the problems of the prior art described above. A drainage channel is formed integrally in the lower part of the finger arm, and rainwater is prevented from leaking between the upper slabs of the bridge through the drainage channel to form a drainage sheet. The problem of the present invention is to provide a non-draining sheet type expansion joint device with an improved structure so that it can be omitted.

In particular, the purpose is to provide a non-drainage sheet type expansion joint device that can prevent traffic congestion that occurs during maintenance work by simply automatically cleaning the drain passage by applying an air cleaning method using compressed air. there is.

In addition, although not separately described, other purposes within the scope that can be inferred considering the specific details and claims for carrying out the invention below are also included in the overall subject of the present invention.

As a specific means to solve the problem of the above-mentioned invention, the present invention constitutes a non-draining sheet type expansion joint device, which is provided to engage with each other by finger grooves (11) to form an expansion joint between the upper plate slabs (1) of the bridge. 1, 2 finger arm (10) (10'); It is spaced apart from the bottom of the first finger arm 10 to form a drain passage 21, and an upward diaphragm 22 protrudes upward at one end, and a gap block to support the first finger arm 10 at the other end. Drainage plate (20) provided with (23); It is disposed at the lower part of the second finger arm (10'), one end is fixed to the upper slab (1) of the bridge together with the second finger arm (10'), and the other end extends to the upper area of the drainage passage (21). Cover plate 30 installed; A water blocking plate (50) installed between the first finger arm (10) and the cover plate (30) to finish the bottom of the first finger arm (10) and block the inflow of rainwater through the gap between the finger grooves (11). ; And the upper part is made of hard synthetic resin with a predetermined thickness so as to provide a flat surface 62, and the lower part is coupled to one side of the upward diaphragm 22 and closely adhered to the bottom of the cover plate 30 by the load of the finger arm. It is characterized in that it includes a sliding pad (60).

As another solution, in the present invention, a non-drainage sheet type expansion joint device is constructed, and the first and second finger arms (10) are provided to engage with each other by finger grooves (11) to form an expansion joint between the upper plate slabs (1) of the bridge. )(10'); They are spaced apart from the bottom of the first and second finger arms 10 and 10' to form drainage channels 21 and 21', and upward diaphragms 22 and 22' are protruded upward at opposite ends, A drain plate (20) (20') provided at the other end with a gap block (23) to support the first and second finger arms (10) (10'); A cover plate 30 installed to close the finger grooves 11 of the first and second finger arms 10 and 10' from the bottom; One end is fixed to the top slab (1) of the bridge together with the first and second finger arms (10) (10'), and is installed between the first and second finger arms (10) (10') and the cover plate (30). A water blocking plate (50) (50') to block the inflow of rainwater through the finger groove (11); And the upper part is made of hard synthetic resin with a predetermined thickness to provide a flat surface 62, and the lower part is coupled to one side of both upward diaphragms 22 and 22' to form the first and second finger arms 10 and 10. It is characterized in that it includes a sliding pad (60) (60') that is in close contact with the bottom surface of the cover plate (30) by the load of ').

At this time, an airtight member 40 that is in close contact with the bottom of the water barrier plate 50 is protrudingly formed on the cover plate 30 that overlaps the water barrier plate 50.

In addition, the airtight member 40 is characterized by being at least one of mohair, airtight packing made of rubber, and a sliding pad made of synthetic resin.

In addition, the flat surface 62 of the sliding pad 60 is formed higher than the upward diaphragm 22 so that the end of the upward diaphragm 22 is not in contact with the bottom surface of the cover plate 30. .

In addition, chambers 70 are formed at both ends of the first and second finger arms 10 and 10' to close the openings on both sides of the drain passage 21, and compressed air is supplied to the upper side of one chamber 70. An input port 74 through which injection is formed is formed, and an output port 72 through which foreign substances are discharged is formed on the lower side of the other chamber 70.

In addition, in order to restrain the cover plate 30 to be stably positioned at the lower center of the first and second finger arms 10 and 10', both drain plates 20 and 20' are provided on the lower part of the cover plate 30. It is characterized by installing a position fixture (80) connecting the.

According to the specific means for solving the above-described problem, the present invention improves the structure so that the drainage sheet can be omitted by integrally forming a drainage channel in the lower part of the finger arm, greatly improving the convenience of on-site construction.

In addition, the outer end of the drainage channel is configured to have a rainwater overflow prevention structure, so that rainwater can be prevented from flowing out between the upper slabs without a conventional drainage sheet.

In addition, by applying an air cleaning method using compressed air to simply and automatically clean the drain channel, there are many expected benefits, including the effect of preventing traffic congestion that occurs during maintenance work.

Figure 1 is a configuration diagram showing the planar state and cross-sectional state of a preferred embodiment of the non-draining sheet type expansion joint provided by the present invention.
Figure 2 is a configuration diagram showing the expansion and contraction behavior of a non-drainage sheet type expansion joint device according to an embodiment of the present invention.
Figure 3 is an enlarged configuration diagram showing the airtight member and sliding pad in the non-draining sheet type expansion joint device of the present invention.
Figure 4 is a configuration diagram showing another embodiment (symmetrical structure) of the non-drainage sheet type expansion joint device of the present invention.
Figures 5 and 6 are diagrams showing the drainage channel air cleaning structure of a non-drainage sheet type expansion joint device according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail according to specific embodiments of the attached drawings. The technical terms used in this specification are terms selected in consideration of their functions in the embodiments, and the meaning of the terms may vary depending on the specific embodiment of the invention. And throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member in between. do.

In addition, expressions indicating directions such as “up, down, front, back” used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms.

The present invention relates to a non-drainage sheet type expansion joint device, which omits not only the previously installed drain sheet but also the elastic foam and improves the structure to form a drainage channel integrally at the bottom of the finger arm, thereby improving on-site constructability and providing smooth operation. It consists of main components including first and second finger arms (10) (10'), drain plate (20), cover plate (30), water drain plate (50), and sliding pad (60) to enable drainage.

Figure 1 is a configuration diagram showing the planar state and cross-sectional state of a preferred embodiment of the non-drainage sheet type expansion joint device provided by the present invention, and Figure 2 is a configuration diagram of the non-drainage sheet type expansion joint device according to an embodiment of the present invention. This is a diagram showing the stretching behavior state.

Referring to Figures 1 and 2, the first and second finger arms (10) (10') according to the present invention are engaged with each other by finger grooves (11) and are provided to form an expansion joint between the upper plate slab (1) of the bridge. .

The first and second finger arms 10 and 10' are installed at the upper corners of the neighboring top slab 1, and are fastened with bolts to the frame embedded in the top slab 1 as shown in FIG. 1. It is provided in a detachable manner.

At this time, the first and second finger arms 10 and 10' are interlocked with each other between the finger grooves 11 to close the space between the upper plate slabs 1, and the gap is varied in response to the expansion and contraction behavior of the bridge.

In addition, the first and second finger arms 10 and 10' have finger grooves 11 completed by a cover plate 30, which will be described later, installed on the bottom and a separate order plate 50 laminated on the top. Treated, during rainy weather, foreign matter containing rainwater leaks into the space between the upper plate slabs (1) through the gap between the finger grooves (11) to the lower part of the first and second finger arms (10) (10'), causing corrosion of the pier structure. prevent it from happening.

The drain plate 20 according to the present invention is spaced apart from the bottom of the first finger arm 10 to form a drain passage 21, and an upward diaphragm 22 protrudes upward at one end and a first finger at the other end. A gap block 23 is provided to support the arm 10.

The drain plate 20 is fixed by a frame (rebar) embedded in the bridge top slab 1, and as shown in FIG. 1, there is a gap with the upward diaphragm 22 spaced apart on both sides of the upper left and right. By the block 23, a drainage passage 21 extending in the width direction of the bridge is formed by the drainage plate 20 and the finger arms 10 and 10' spaced apart from each other upward and downward.

The drainage channel 21 is provided to collect rainwater flowing in between the finger grooves 11 of the first and second finger arms 10 and 10' and drain it in the width direction of the bridge during rainy weather. A separate drainage sheet can be omitted.

The cover plate 30 according to the present invention is disposed below the second finger arm 10', and one end is fixed to the upper plate slab 1 of the bridge together with the second finger arm 10'.

The cover plate 30, which has a plate shape, has a length that reaches the upper area of the drain passage 21 at the other end to finish the bottom of the second finger arm 10' and block the inflow of rainwater into the finger groove 11. It is formed to extend to have.

Meanwhile, the bottom of the first finger arm 10 is finished with an order plate 50 mounted on the top of the cover plate 30.

The order plate 50 is arranged overlapping the upper surface of the cover plate 30 and is fixed to the gap block 23 together with the first finger arm 10.

In this way, the cover plate 30 and the order plate 50 overlap each other in surface contact under the finger groove 11, and a sliding movement occurs in response to the stretching behavior of the first and second finger arms 10 and 10'. It is provided to finish the finger groove (11) at the bottom.

Since the order plate 50 is always exposed to the outside between the finger grooves 11, it is preferably made of stainless steel with excellent corrosion resistance, and a slip agent is placed on the bottom to reduce frictional resistance with the airtight member 40, which will be described later. can be coated.

Figure 3 is an enlarged configuration diagram of the airtight member and sliding pad in the non-drainage sheet type expansion joint device of the present invention. The sliding pad 60 according to the present invention is disposed at the lower part of the cover plate 30 and applied from the top. Due to the applied load, it comes into close contact with the bottom of the cover plate (30).

Referring to FIG. 3(b), the upper part of the sliding pad 60 is made of hard synthetic resin (engineering plastic material) with a predetermined thickness so as to provide a flat surface 62, and the lower part is located upward of the drain plate 20. It is formed to be firmly coupled to the resting groove 24 formed on the inside of the diaphragm 22 to stably support the load of the upper vehicle and finger arm.

At this time, the flat surface of the sliding pad 60 is configured to be located higher than the upward diaphragm 22 so that the end of the upward diaphragm 22 is in a non-contact state with the bottom surface of the cover plate 30. This prevents noise and wear and damage to the plate that may occur when the bottom of the cover plate 30 is directly pressed and rubbed against the end of the upward diaphragm 22.

As described above, the sliding pad 60 installed along the width direction of the bridge is provided to always be in contact with the cover plate 30, so that it has a rainwater overflow prevention structure that prevents rainwater from leaking between the deck slabs even without a conventional drainage sheet.

That is, even if a large amount of rainwater flows into the gap between the cover plate 30 and the water shutoff plate 50, airtightness is maintained by the sliding pad 60 that is maintained in close contact with the bottom of the cover plate 30. This prevents rainwater collected in the drainage channel 21 from leaking into the space between the top slabs 1.

In order to provide a more improved anti-flooding effect, an airtight member 40 is protruded on the cover plate 30 and is provided to be in close contact with the bottom of the water blocking plate 50.

Referring to FIG. 3, an installation groove 32 may be formed in the upper part of the cover plate 30 that overlaps the water blocking plate 50 in order to couple and secure the airtight member 40.

Additionally, the airtight member 40 may include one or more of airtight packing, mohair, or a sliding pad depending on the purpose of use. Figure 3(b) shows an example in which airtight packing and a sliding pad are installed. Airtight packing made of rubber is installed for the purpose of blocking the inflow of rainwater between the water blocking plate 50 and the cover plate 30, or to prevent dust. Mohair can be installed to block the inflow of foreign substances, and a sliding pad made of synthetic resin can be installed to ensure smooth sliding of the water blocking plate 50 and the cover plate 30.

Therefore, there is an advantage of being able to respond to various environments by installing appropriate types of airtight members 40 in duplicate depending on the climate or environment in which the bridge is installed.

According to the above configuration, during rainy weather, the airtight member 40 first blocks foreign substances, including rainwater, from flowing into the drainage channel 21 through the gap between the cutoff plate 50 and the cover plate 30, and some The double water flow structure in which inflow is collected in the drainage channel (21) and discharged in the width direction of the bridge prevents rainwater from leaking between the top slabs (1) of neighboring bridges.

Figure 4 shows another embodiment of the non-drainage sheet type expansion joint device of the present invention, which is applied to a relatively large bridge and has a left-right symmetrical structure to cover a wide expansion range.

Specifically, the symmetrical configuration includes first and second finger arms (10) (10') that are interlocked with each other by finger grooves (11) to form expansion joints between the upper plate slabs (1) of the bridge, and the first and second finger arms (10) (10') 2 are arranged spaced apart on the bottom of the finger arms (10) (10') to form a drain passage (21) (21'), upward diaphragms (22) (22') project upward at one end facing each other, and first and second at the other end. A drain plate (20) (20') provided with gap blocks (23) (23') to support the finger arms (10) (10'), and the fingers of the first and second finger arms (10) (10') A cover plate (30) is installed to close the groove (11) from the bottom, and one end is fixed to the upper slab (1) of the bridge together with the first and second finger arms (10) (10'), and the first and second A water blocking plate 50 (50') is installed between the finger arm (10) (10') and the cover plate (30) to block the inflow of rainwater through the finger groove (11), and has a flat surface (62) on the top. It is formed of hard synthetic resin with a predetermined thickness, and the lower part is coupled to one side of both upward diaphragms 22 and 22' and is connected to the cover plate 30 by the load of the first and second finger arms 10 and 10'. ) Includes a sliding pad (60) (60') that is in close contact with the bottom surface.

At this time, the cover plate 30 must be formed with a length that can sufficiently cover the finger grooves 11 to prevent rainwater from flowing in between the finger grooves 11 and falling between the top slabs, and must also be formed to a length that can sufficiently cover the finger grooves 11 to prevent rainwater from flowing between the finger grooves 11 and falling between the top slabs. The position of the cover plate 30 does not change due to the stretching behavior of the first and second finger arms 10 and 10' and must always be located in the center between the slabs.

In order to restrain the cover plate 30 to be stably positioned at the lower center of the first and second finger arms 10 and 10', both drain plates 20 and 20 are provided at the bottom of the cover plate 30. ') may be further formed, and it is desirable to install two or more of these position fixtures 80 spaced apart in the width direction of the bridge.

Referring to FIG. 4, the positioning fixture 80 includes a pair of center links 82 rotatably coupled to each other by a center pin 83 coupled to the bottom center of the cover plate 30, and one end It consists of a multi-link 84 that is pin-connected to the end of each center link 82 and the other end is connected to the upward diaphragm 22 (22') by a fixing pin 85.

Accordingly, even if the gap between the slabs is contracted or relaxed, the position fixture 80 is always located at the center between the upper slabs (1) due to the angular movement of the center link 82 and the multi-link 84, and the position fixture 80 The cover plate 30 coupled to the center pin 83 is always provided to stably close the finger groove 11.

Figures 5 and 6 are diagrams showing the drainage channel air cleaning structure of a non-drain sheet type expansion joint device according to an embodiment of the present invention.

Referring to the plan view and front view of FIG. 5, the drain passage 21 has an input port 74 through which compressed air is injected at one end, and an output port 72 through which foreign substances are discharged together with the compressed air at the other end. do.

Specifically, chambers 70 are formed at both ends of the first and second finger arms 10 and 10' to close the openings on both sides of the drain passage 21, and a chamber 70 is inputted upward into one side of the chamber 70. A port 74 is formed, and an output port 72 is formed downward in the other chamber.

As shown in FIG. 6 according to the above configuration, when compressed air is injected through the input port 74, the compressed air is discharged to the output port 72 via the drain passage 21, and at this time, the drain passage 21 is discharged to the output port 72. There is an advantage in reducing maintenance costs because rainwater and foreign substances remaining in (21) are simply air cleaned with compressed air.

Meanwhile, the compressed air input to the input port 74 is configured to be remotely controlled by a valve, so that the operator can automatically perform air cleaning work unmanned in the control room, or automatically output compressed air at the time period input to the control module. An air cleaning configuration is also possible.

As described above, the most preferred embodiments of the present invention have been described in the detailed description of the present invention, but various modifications may be made without departing from the technical scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the above embodiments, but should be recognized to the technologies in the patent claims described later and to equivalent technical means from these technologies.

1: Top slab
10, 10': 1st, 2nd finger arm 11: Finger groove
20, 20': Drainage plate
21: Drainage channel 22: Upward diaphragm 23: Gap block 24: Placement groove
30: Cover plate 32: Installation groove
40: Airtightness
50, 50': Cutoff plate
60, 60': sliding pad 62: flat surface
70: Chamber 72: Output port 74: Input port
80: Position fixture
82: Center link 83: Center pin 84: Multi-link 85: Fixing pin

Claims (7)

First and second finger arms (10) (10') engaged with each other by finger grooves (11) to form an expansion joint between the upper plate slabs (1) of the bridge;
It is spaced apart from the bottom of the first finger arm 10 to form a drain passage 21, and an upward diaphragm 22 protrudes upward at one end, and a gap block to support the first finger arm 10 at the other end. Drainage plate (20) provided with (23);
It is disposed at the lower part of the second finger arm (10'), one end is fixed to the upper slab (1) of the bridge together with the second finger arm (10'), and the other end extends to the upper area of the drainage passage (21). Cover plate 30 installed;
A water blocking plate (50) installed between the first finger arm (10) and the cover plate (30) to finish the bottom of the first finger arm (10) and block the inflow of rainwater through the gap between the finger grooves (11). ; and
The upper part is made of hard synthetic resin with a predetermined thickness to provide a flat surface 62, and the lower part is coupled to one side of the upward diaphragm 22 and closely adhered to the bottom of the cover plate 30 by the load of the finger arm. Includes a sliding pad (60);
Chambers 70 are formed at both ends of the first and second finger arms 10 and 10' to close the openings on both sides of the drain passage 21, and compressed air is injected into the upper side of one chamber 70. A non-draining sheet type expansion joint device characterized in that an input port 74 is formed, and an output port 72 through which foreign substances are discharged is formed on the lower side of the other chamber 70.
First and second finger arms (10) (10') engaged with each other by finger grooves (11) to form an expansion joint between the upper plate slabs (1) of the bridge;
The first and second finger arms 10 and 10' are spaced apart from each other on the bottom to form drain channels 21 and 21', and upward diaphragms 22 and 22' protrude upward at one end facing each other, and at the other end. A drain plate (20) (20') provided with a gap block (23) (23') to support the first and second finger arms (10) (10').
A cover plate 30 installed to close the finger grooves 11 of the first and second finger arms 10 and 10' from the bottom;
One end is fixed to the top slab (1) of the bridge together with the first and second finger arms (10) (10'), and is installed between the first and second finger arms (10) (10') and the cover plate (30). and a water blocking plate (50) (50') to block the inflow of rainwater through the finger groove (11).
The upper part is made of hard synthetic resin with a predetermined thickness to provide a flat surface 62, and the lower part is coupled to one side of both upward diaphragms 22 (22') to form the first and second finger arms (10) (10'). It includes a sliding pad (60) (60') that is closely adhered to the bottom of the cover plate (30) by the load of,
Chambers 70 are formed at both ends of the first and second finger arms 10 and 10' to close the openings on both sides of the drain passage 21, and compressed air is injected into the upper side of one chamber 70. A non-draining sheet type expansion joint device characterized in that an input port 74 is formed, and an output port 72 through which foreign substances are discharged is formed on the lower side of the other chamber 70.
According to claim 1 or 2,
A non-draining sheet type expansion joint device, characterized in that an airtight member (40) is protrudingly formed on the cover plate (30) overlapping with the water drain plate (50) and is in close contact with the bottom of the water drain plate (50).
According to clause 3,
The airtight member (40) is a non-draining sheet type expansion joint, characterized in that it is one or more of mohair, airtight packing made of rubber, and a sliding pad made of synthetic resin.
According to claim 1 or 2,
The flat surface 62 of the sliding pad 60 is formed higher than the upward diaphragm 22 so that the end of the upward diaphragm 22 is not in contact with the bottom surface of the cover plate 30. Sheet type expansion joint.
delete delete

Images