KR102651760B1 - Bi-directional isolation finger joint - Google Patents

Abstract

A bidirectional isolation finger joint is disclosed that can reduce the amount of metal material and processing process required and eliminate the fastening process for fixing the sliding finger portion to the structure. The two-way isolation finger joint includes a first base plate, a second base plate, a plurality of first fingers arranged at intervals, a fixed finger portion for fixedly installed on the first base plate, and a plurality of second fingers. A second finger groove is formed between the plurality of second fingers, and a sliding finger portion is installed on the second base plate to be movable in a direction perpendicular to the bridge axis and is installed on the second base plate to perform the sliding function. It includes a guide portion for guiding movement of the finger portion in a direction perpendicular to the diaphragm axis and limiting movement in the diaphragm direction.

Description

BI-DIRECTIONAL ISOLATION FINGER JOINT}

The present invention is installed between the superstructure of an overpass or bridge, between two neighboring structures of a logistics center, etc., and allows relative displacement between the two structures due to new construction or earthquakes due to temperature changes, etc., and allows vehicles to move between the two neighboring structures. It is related to the improvement of expansion joints that allow them to pass smoothly over the gap between them, and especially to the improvement of finger joints.

In general, structures expand or contract due to temperature changes, drying shrinkage, creep, etc., and perform inclined movements that move or rotate back and forth or left and right depending on dynamic loads due to vehicle traffic, earthquakes, etc. Accordingly, when constructing a bridge or structure, an appropriate gap must be left between two neighboring structures depending on the material, length, and support structure of the structure. Expansion joints are installed between these structures to allow vehicles to pass smoothly over the gap. Various types of expansion joints have been developed and used. The present invention relates to a finger type expansion joint device among these.

Conventional finger-type expansion joints have fingers and have a structure in which finger members that face each other and are joined are fixed to both structures, so there are many fastening parts to the finger members, so it takes a lot of time and costs to install, dismantle, and replace. There was a downside to it being necessary.

In addition, in the conventional finger joint, the finger members on both sides are fixed to each side of the structure, so when the force caused by an earthquake or the like acts in the direction perpendicular to the bridge axis, that is, in the lateral direction, the bridge structure in the area where the finger joint is installed is easily damaged. There was also a problem.

In order to solve this shortcoming, the finger members on both sides are allowed to move in the direction perpendicular to the axis relative to each other, according to the registered patent publication No. 10-0757212 (name of invention: seismic isolation finger joint, inventor Cho Young-cheol). It has been disclosed. This invention of Cho Young-cheol allows relative displacement between the two structures in the direction of the bridge axis and the direction perpendicular to the bridge axis, and provides excellent effects such as no lifting of the fingers, long life, and little deformation of the fingers. Accordingly, Youngcheol Jo's invention is suitable for use in long-span bridges or bridges with a large deck weight. However, since a lot of thick metal materials are used, it is heavy, making installation, disassembly, and replacement difficult and costly, so it may not be suitable for installation on lightweight bridges or structures that are short in length and have a relatively small weight.

In addition, according to the registered patent publication No. 10-2096371 (name of the invention: finger joint having a straddle plate, inventors: Bang In-seok, Baek Jun-ho), a steel plate with a much smaller thickness than the existing finger can be used, and it can be used for the top and bottom of the upper bridge structure. It is disclosed that rotation in direction is easy to accommodate and that the first finger portion is allowed to move in a direction perpendicular to the bridge axis within a predetermined range with respect to the second finger portion. Although this “finger joint with a straddling plate” invention has many of the above excellent advantages, it is difficult to construct because a connection structure between the straddling plate and the first finger must be installed, and the latching plate and the second finger must be fixed to both structures respectively. It is difficult to reduce the time and cost involved.

The purpose of the present invention is to provide a two-way isolation finger joint that can dramatically reduce the amount of metal material required.

The purpose of the present invention is to provide a two-way isolation finger joint that is easy to install, replace, and dismantle by eliminating the fastening portion for the sliding finger portion.

Another object of the present invention is to provide a two-way isolation finger joint that can prevent one end of the sliding finger from being lifted without a separate fastening part for the sliding finger.

Another object of the present invention is to provide a two-way isolation finger joint that is easy to make because the structure is not complicated and allows displacement in the direction perpendicular to the bridge axis between the two structures.

Another purpose of the present invention is that the structure is not complicated, so it is easy to make, and it allows displacement in the direction perpendicular to the bridge axis between the two structures, as well as allowing the inclination of the sliding finger portion, so that even if a step occurs between the two structures, the first and second fingers The purpose is to provide a two-way isolation finger joint that has a negative reaction force resistance function while reducing the step difference between fingers.

The two-way isolation finger joint according to the present invention includes a first base plate for installation at the end of the first structure; a second base plate for installation on an end of the second structure that is installed facing the first structure with a gap between them; a fixing finger portion having a plurality of first fingers arranged at intervals and fixedly installed on the first base plate through a fixing mechanism; It is provided with a plurality of second fingers that can each be inserted movably in the axial direction into a plurality of first finger grooves formed between the plurality of neighboring first fingers, and a plurality of the second fingers are provided between the plurality of second fingers. A second finger groove is formed into which one finger can be inserted, and a sliding finger portion is installed on the second base plate to be movable in a direction perpendicular to the bridge axis; and a guide part installed on the second base plate to guide the sliding finger portion in a direction perpendicular to the diaphragm axis and to limit movement in the diaphragm direction.

The two-way isolation finger joint according to the present invention is installed on the second structure or the second base plate, and the sliding finger opposite the fixed finger part in a state where the guide part limits movement of the sliding finger part in the throttling direction. It is desirable to include an end lifting prevention part to prevent the end of the unit from lifting upward.

An upwardly inclined surface is formed at an end of the sliding finger opposite to the fixed finger, and the end lifting prevention portion may have a downwardly inclined surface facing the upwardly inclined surface.

In some cases, a first protruding protrusion protruding backward is formed at the end of the sliding finger opposite the fixed finger portion, and the end lifting prevention portion is disposed to face the first protruding protrusion to prevent the protruding protrusion from lifting upward. It may have a second protruding jaw to prevent it.

A negative reaction force resistance locking portion is formed between the first finger or the first finger and the first base plate, and the negative reaction force resistance locking portion is caught on the second finger to prevent the second finger from being lifted upward. A negative reaction resistance barrier may be formed.

The fixed finger portion is supported on a support member and installed to be spaced upward with respect to the first base plate, so that a negative reaction force resistance locking portion is formed between the first finger and the first base plate, and the negative reaction force resistance locking step is formed. It may be formed by a locking protrusion member that is attached to the bottom of the second finger and a portion of which protrudes to the side of the second finger and catches on the bottom edge of the first finger.

Even if the support member and the locking ledge collide with each other, the second finger flows in a direction perpendicular to the bridge axis in the first finger groove, so that the support member and the locking ledge can prevent each other from being caught between the edges of the support member and the locking ledge. It is preferable that the edges of the locking protrusion are chamfered.

The negative reaction force resistance locking portion has a groove formed along the side of the first finger, and the negative reaction force resistance locking protrusion is coupled to a hole formed in the second finger, and a portion of the negative reaction force resistance locking protrusion protrudes to the side of the second finger and is in the groove. It may include a coupled pin or a locking protrusion member.

A spherical groove and/or a cylindrical groove are formed on the bottom of the sliding finger portion, and the sliding finger portion is coupled to the spherical groove and/or the cylindrical groove to allow inclination of the sliding finger portion. A spherical block having a convex spherical surface. and/or may be supported on the first base plate or the second base plate or the first base plate and the second base plate through a cylindrical block having a cylindrical surface.

It is preferable that the spherical block or the cylindrical block is caught by the guide part so that movement of the sliding finger part in the throttling direction is restricted.

The first base plate has a stainless steel plate installed on the entire surface to support the second finger so that it can move, and the second base plate has the sliding finger portion supported along one side of the rear end of the guide portion at a right angle to the throttling axis. It may have a strip-shaped stainless steel plate installed so that it can be moved in one direction.

The sliding finger portion adjusts the degree to which the second finger is coupled to the first finger groove according to the spacing of the gap, and is throttled according to the degree of displacement in the direction perpendicular to the throttling axis between the first structure and the second structure. The degree of movement in the right angle direction is adjusted.

In this specification, the term “throwing axis direction” is defined to mean the longitudinal direction of the first or second finger, and the “throwing axis direction perpendicular” is defined to mean the width direction of the first or second finger.

According to the present invention, compared to a conventional finger joint, the amount of metal material required can be reduced, and the processing process can also be reduced because the structure of the second finger portion is not complicated.

According to the present invention, the fastening process for fixing the sliding finger portion to the second structure can be eliminated.

According to the present invention, the end of the sliding finger portion is prevented from being lifted by the negative reaction force resistance function without a separate fastening portion to the second base plate.

According to the present invention, it is possible to accommodate both the displacement in the direction perpendicular to the bridge axis and the displacement in the direction perpendicular to the bridge axis between two neighboring structures with a simple configuration.

According to the present invention, the sliding finger portion can be mounted on the first base plate and the second base plate without a separate fastening process, so installation, replacement, and disassembly of the finger joint are very easy.

1 is an exploded perspective view illustrating a two-way isolation finger joint according to the present invention;
Figure 2 is a cross-sectional view showing the installed state of the two-way isolation finger joint according to the present invention;
Figure 3 is a plan view of the sliding finger portion;
Figure 4 is a bottom view showing the combined state of the first finger and the second finger;
Figure 5 is a partial side cross-sectional view showing another example of the end lifting prevention portion;
Figure 6 is a plan view showing a modified example of the sliding finger portion;
Figure 7 is a view showing an example of a cylindrical block for supporting the sliding finger portion of Figure 6;
Figure 8 is a diagram for explaining an example of a two-way isolation finger joint using the sliding finger shown in Figure 6;
9 is a view for explaining another modified example of the sliding finger portion;
Figure 10 is an exploded perspective view showing an example of a two-way isolation finger joint according to the present invention using the sliding finger part of Figure 9;
Figure 11 is a diagram showing another modified example of a negative reaction force resistance locking step,
Figure 12 is a diagram showing another modified example of a negative reaction force resistance locking step.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is an exploded perspective view for explaining the two-way isolation finger joint according to the present invention, Figure 2 is a cross-sectional view showing the installed state of the two-way isolation finger joint according to the invention, Figure 3 is a plan view of the sliding finger portion, and Figure 4 is a plan view of the sliding finger portion. This is a bottom view showing the combined state of the first and second fingers.

As can be seen in Figures 1 to 4, the two-way isolation finger joint 100 according to the present invention is installed between the first structure 20 and the second structure 30, which are installed facing each other with a gap 10. , This is to ensure that the vehicle can pass smoothly over the gap 10 without rattling.

As shown, the two-way isolation finger joint 100 according to the present invention includes a first base plate 110 for installation at the end of the first structure 20, a first structure 20, and a gap ( It has a second base plate 120 for installation on the end of the second structure 30, which is installed facing the 10). In addition, the two-way isolation finger joint 100 according to the present invention includes a fixed finger part 130 fixedly installed on the first structure 20, a sliding finger part 150 installed on the second structure 30, and a guide part. It has (170).

The first base plate 110 has studs 112 installed at intervals on its bottom, and when forming the first structure 20 with concrete, etc., it is attached to the first structure 20 through the studs 112. It is installed as a whole. Preferably, an anchor socket 182 constituting the fixing mechanism 180 is installed on the bottom of the first base plate 110. Additionally, the first base plate 110 has a stainless steel plate 114 attached to the upper surface. The first base plate 110 of this embodiment illustrates that a stainless steel plate 114 is installed on the entire surface that supports the second finger 152 so that it can move. Of course, a through hole (TH) must be formed in the first base plate 110 at a position corresponding to the anchor socket 182.

The second base plate 120 is to be installed at the end of the second structure 30, which is installed facing the first structure 20 with a gap 10, and has studs 122 installed at intervals on its bottom. When forming the second structure 30 with concrete, etc., it is integrally installed on the second structure 30 through the studs 122. Since the sliding finger portion 150 does not need to be fixed to the second base plate 120, there is no need to form a through hole in the second base plate 120. This is one of the advantages of the present invention. A guide portion 170 is installed on the second base plate 120 in a direction perpendicular to the bridge axis. The guide portion 170 is installed at a position spaced a predetermined distance away from the end opposite to the first base plate 110 toward the first base plate 110 . This guide portion 170 is intended to guide the movement of the sliding finger portion 150 in a direction perpendicular to the diaphragm axis and to limit its movement in the diaphragm direction. This guide portion 170 restricts the movement of the sliding finger portion 150 in the throttling direction, so that the end lifting prevention portion 190, which will be described later, can fulfill its function. The second base plate 120 is a strip-shaped stainless steel plate on the right side of the guide part 170 that allows the sliding finger part 150 to move in the direction perpendicular to the bridge axis while being supported along one side of the rear end of the guide part 170. A steel plate (124) is provided.

Preferably, the fixing finger portion 130 is fixed on the first base plate 110 through a fixing mechanism 180, and includes a plurality of first fingers 132 arranged at intervals and the plurality of first fingers It is provided with a first connection part 134 that connects 132 to each other. A first finger groove 136 is formed between neighboring first fingers 132. In some cases, the fixed finger portion 130 may be composed of a plurality of separated first fingers 132, but as shown in FIG. 1, the plurality of first fingers 132 are connected through the first connection portion 134. It is desirable to be connected as one piece. In this fixing finger portion 130, through holes TH into which the bolt 184 of the fixing mechanism 180 can be inserted are formed at intervals.

Preferably, the fixing finger portion 130 is fixed on the first base plate 110 while being supported by support members 140 arranged at intervals. Preferably, the support member 140 has a through hole (TH) through which the bolt 184 can pass, and is attached to the first base plate 110 together with the fixing finger portion 130 through the fixing mechanism 180. It is fixed. When the support member 140 has a rectangular flat shape, each corner is preferably chamfered. By interposing the support member 140 between the fixing finger part 130 and the first base plate 110, the fixing finger part 130 is installed to be spaced upward with respect to the first base plate 110. Accordingly, a negative reaction force resistance engaging portion 138 is formed between the fixing finger portion 130 and the first base plate 110. The support member 140 may be installed by welding to the bottom of the fixing finger 130 or coupled to an anti-rotation groove formed on the bottom so that it does not rotate.

That is, the bolt 184 is coupled to the anchor socket 182 through through holes (TH) formed in each of the fixing finger part 130, the support member 140, and the first base plate 110 to form the fixing finger part 130. is fixed on the first base plate 110.

The sliding finger portion 150 integrally connects a plurality of second fingers 152 and a plurality of second fingers 152 that can each be movably inserted in the plurality of first finger grooves 136 in the axial direction. It has a second connection portion 154. Second finger grooves 156 into which the plurality of first fingers 132 can be respectively inserted are formed between the plurality of second fingers 152. One end of this sliding finger portion 150 is supported on the second base plate 120, is guided by the guide portion 170 through a spherical block 160b, etc., and is clamped on the second base plate 120. It is installed to be movable in a right angle direction, and the other end is inserted into the first finger groove 136 and hangs over the first base plate 110 while being supported by the spherical block 160a.

Preferably, spherical grooves 157a and 157b are formed on the bottom of the second finger 152 of the sliding finger portion 150 and the bottom of the second connection portion 154, and each of the spherical grooves 157a and 157b has an upper end. Spherical blocks 160a and 160b, which have a convex spherical surface and a flat bottom, are combined.

The spherical block 160a installed on the bottom of the second finger 152 is supported on the stainless steel plate 114 of the first base plate 110. The spherical block 160b installed on the bottom of the second connection part 154 is supported on the strip-shaped stainless steel plate 124 on the surface of the second base plate 120 on the right side of the guide part 170 to guide the guide part 170. It is installed so that it can be moved in a direction perpendicular to the bridge axis with respect to the second structure 30 or the second base plate 120 while receiving it. The spherical block 160b installed on the bottom of the second connection portion 154 is caught by the guide portion 170 and serves to limit the sliding finger portion 150 from moving toward the fixed finger portion 130 beyond a certain level.

The spherical blocks (160a, 160b) have sliding finger parts even if the first structure (20) and/or the second structure (30) is rotated and tilted or a step occurs between the first structure (20) and the second structure (30). By allowing two-way rotation of (150), the step difference occurring between the fixed finger part 130 and the sliding finger part 150 can be reduced, and the step difference caused by mutual interference between the first finger 132 and the second finger 152 can be reduced. It plays a role in preventing damage. In addition, the spherical blocks (160a, 160b) enable smooth sliding movement on the stainless steel plates (114, 124). These spherical blocks (160a, 160b) are made of polyamide (PA), polyacetal, and polyethylene terephthalate (PET), which have a small friction coefficient and high compressive strength against the stainless steel plates 114 and 124. It is preferable that it is made of engineering plastics such as: In some cases, when only one-way inclination is allowed between the two structures, a cylindrical groove and a cylindrical block may be used instead of the spherical grooves 157a and 157b and the spherical blocks 160a and 160b.

A negative reaction force resistance locking protrusion 158 is formed on the second finger 152 to prevent the second finger 152 from being lifted upward by being caught by the negative reaction force resistance locking portion 138. The negative reaction force resistance locking protrusion 158 of this embodiment attaches a plate-shaped locking protrusion member to the bottom of the second finger 152 by welding, etc., so that some portions protrude on both sides of the second finger 152 to resist negative reaction force. It shows that it is configured to hang on the bottom edge of the first fingers 132 on both neighboring sides constituting the part 138. In order to allow a smooth inclination of the sliding finger portion 150 with respect to the fixed finger portion 130, the negative reaction force resistance locking protrusion 158 may be installed to be slightly spaced apart from the negative reaction force resistance locking portion 138 rather than being in close contact with the negative reaction force resistance locking portion 138.

Referring to FIGS. 1 to 4 , when the negative reaction force resistance locking protrusion 158 is composed of a plate-shaped rectangular member, it is preferable that each corner is chamfered. In this way, even if the support member 140 and the negative reaction force resistance stopper 158 collide with each other, the second finger 152 of the sliding finger portion 150 moves in the direction perpendicular to the bridge axis within the first finger groove 136. It is possible to prevent the support member 140 and the locking step 158 from being caught by each other. The width of the first finger groove 136 should be slightly larger than the width of the second finger 152, and the width of the second finger groove 156 should be slightly larger than the width of the first finger 132. am.

An end lifting prevention portion 190 is installed on the second structure 30 or the second base plate 120. This end lifting prevention portion 190 is configured so that the end of the sliding finger portion 150 opposite the fixed finger portion 130 is tilted upward while the guide portion 170 restricts the movement of the sliding finger portion 150 in the axial direction. This is to prevent it from being heard.

In this embodiment, an upwardly inclined surface 159 is formed at the end of the sliding finger part 150 opposite the fixed finger part 130, and the end lifting prevention part 190 is downwardly facing the upwardly inclined surface 159. It shows that it has an inclined surface (192). The upwardly inclined surface 159 and the downwardly inclined surface 192 are installed at a predetermined interval so that the sliding finger portion 150 can rotate and perform an inclined movement. Accordingly, the sliding finger portion 150 can move in the throttling direction within a range limited by the guide portion 170, for example, within a range of several millimeters.

The sliding finger part 150 as described above can be made by mounting the spherical blocks (160a, 160b) in the spherical grooves (157a, 157b) on the bottom without a separate fixing process, or by placing the spherical blocks (160a, 160b) at the corresponding positions. Since it can be mounted so as to span the first base plate 110 and the second base plate 120, it is very easy to install, replace, and dismantle.

That is, the two-way isolation finger joint 100 according to the present invention is installed by installing the first base plate 110 and the second base plate 120 at the ends of the first structure 20 and the second structure 30, respectively. , the fixing finger portion 130 is fixed on the first base plate 110 using the fixing mechanisms 180, and the spherical blocks 160a and 160b are connected to the first base plate 110 and the second base plate 120. ), or by installing the sliding finger part 150 while placing it in a predetermined position or by combining the spherical blocks 160a and 160b with the spherical grooves 157a and 157b of the sliding finger part 150, so the installation process is Very easy. When installing the sliding finger unit 150 with the spherical blocks (160a, 160b) coupled to the spherical grooves (157a, 157b) of the sliding finger unit 150, the spherical blocks (160a, 160b) have the corresponding spherical grooves (157a). , 157b), of course, it must be possible to combine them so as not to deviate from them.

The two-way isolation finger joint 100 according to the present invention is installed as shown in FIG. 2, and the first structure 20 and/or the second structure 30 expands and contracts according to temperature changes, etc. to form a space in the gap 10. Depending on the degree to which the gap changes, the second finger 152 moves along the first finger groove 136, allowing the vehicle to pass smoothly through the upper part of the gap 10 without shaking. Even if a negative reaction force acts on the sliding finger portion 150 in the process of the vehicle passing, the sliding finger portion is prevented by the negative reaction force resistance locking step 158, the negative reaction force resistance locking portion 138, and/or the end lifting prevention portion 190. The end of (150) is prevented from lifting upward.

The degree to which the second finger 152 is coupled to the first finger groove 136 is adjusted according to the spacing of the gap 10.

Meanwhile, when the first structure 20 and/or the second structure 30 rotates and is inclined to one side, the spherical blocks 160a and 160b allow the sliding finger portion 150 to tilt and the first finger 132 ) and the second finger 152 can be minimized, and damage caused by interference between the first finger 132 and the second finger 152 is prevented.

On the other hand, when the first structure 20 and the second structure 30 move relative to each other in the direction perpendicular to the throttling axis due to an earthquake, wind load, etc., the sliding finger portion 150 moves while being guided by the guide portion 170. Move in a right angle direction to prevent excessive force from being applied to the first finger 132 and the second finger 152. The degree of movement of the sliding finger portion 150 in the direction perpendicular to the bridge axis is adjusted depending on the degree of displacement in the direction perpendicular to the bridge axis between the first structure 20 and the second structure 30.

Installed in the gap 10 between the first structure 20 and the second structure 30 is a rainwater gutter to prevent rainwater, etc. from falling down.

Figure 5 is a partial side cross-sectional view showing another example of the end lifting prevention portion. The explanation will be made with reference to the drawings described above.

In some cases, a first protruding protrusion 159a protruding backward may be formed at the end of the sliding finger 150 opposite the fixed finger 130. In this case, the end lifting prevention portion 190 may be configured to have a second protruding protrusion 192a that is disposed facing the first protruding protrusion 159a and prevents the first protruding protrusion 159a from being lifted upward. there is. The rest is the same as described previously.

Figure 6 is a plan view showing a modified example of the sliding finger part, Figure 7 is a diagram showing an example of a cylindrical block for supporting the sliding finger part of Figure 6, and Figure 8 is a two-way isolation finger joint using the sliding finger part shown in Figure 6. This is a drawing to explain an example.

Referring to FIGS. 6 to 8, a spherical groove 157a is formed on the bottom of the second finger 152 of the sliding finger portion 150, and a cylindrical groove 157c is formed on the bottom of the second connection portion 154. It can be. Of course, several short cylindrical grooves 157c may be installed at intervals. In addition, of course, in some cases, a short cylindrical groove may be formed on the bottom of the second finger 152 instead of the spherical groove 157a. As shown in FIG. 7, a cylindrical block 160c formed long in the direction perpendicular to the bridge axis is coupled to the cylindrical groove 157c.

The upper end of the cylindrical block 160c is formed as a cylindrical surface, and the lower surface is formed as a flat surface. The cylindrical block 160c only allows inclination of the sliding finger portion 150 in the direction of the axis. This cylindrical block 160c is caught on the guide portion 170 to guide the sliding finger portion 150 to move in a direction perpendicular to the bridge axis and to restrict movement toward the fixed finger portion 130. The rest is the same as described previously.

Figure 9 is a view for explaining another modified example of the sliding finger part, and Figure 10 is an exploded perspective view showing an example of a two-way isolation finger joint according to the present invention using the sliding finger part of Figure 9.

In some cases, the negative reaction force resistance locking step 158 may be formed of a pin or the like that is coupled to the second finger 152 so as to protrude laterally. A hole 158a may be formed in the second finger 152, and a pin longer than the width of the second finger 152 may be connected to the hole 158a to form a negative reaction force resistance locking protrusion 158. In this case, the negative reaction force resistance locking portion 138 may be formed in the form of a groove into which the negative reaction force resistance locking protrusion 158 can be inserted and caught on the side of the first finger 132. In this case, the fixing finger portion 130 may be installed directly supported on the first base plate 110 without being supported by the support member 140. And since the negative reaction force resistance locking portion 138 only needs to have an upper side portion that can prevent the negative reaction force resistance locking step 158 from being lifted upward, the lower side portion may not be necessary. That is, the lower portion of the upper jaw portion of the negative reaction force resistance locking portion 138 may be configured in a planar shape. Referring to FIG. 10, the negative reaction force resistance locking portion 138 is preferably formed in the form of a groove with an end open toward the second finger 152 on the side of the first finger 132. This makes it easy to assemble and/or replace the sliding finger portion 150. However, since the negative reaction force resistance locking portion 138 may be coupled to the negative reaction force resistance locking portion 138 in various other ways or in parts other than the end, the end of the negative reaction force resistance locking portion 138 must be It does not have to be formed in an open manner.

The rest is the same as described previously.

FIG. 11 is a diagram showing another modified example of a negative reaction force resistance locking ledge, and FIG. 12 is a diagram showing another modified example of a negative reaction force resistance locking ledge.

In some cases, as shown in FIG. 11, a cylindrical groove is formed on the bottom of the second finger 152, and a locking protrusion member having a cylindrical surface is attached to the bottom of the second finger 152 by welding or the like. A negative reaction force resistance locking protrusion 158 may be formed whose upper surface has a cylindrical shape.

In addition, in some cases, as shown in FIG. 12, a locking protrusion member with an inclined upper surface of a portion protruding to the side of the second finger 152 is attached to the bottom of the second finger 152 to resist negative reaction force. ) can be formed.

Of course, the locking protrusion member explained through FIGS. 11 and 12 does not necessarily have to be attached to the bottom of the second finger 152, but is attached to the second finger 152 as explained through FIGS. 9 and 10. A hole may be formed in the width direction of (152), and a stopper member may be joined to the hole to form a negative reaction force resistance stopper (158).

That is, if the upper surface of the negative reaction force resistance latching step 158 is formed as an upwardly convex cylindrical surface as shown in FIG. 11 or is formed to be inclined to gradually lower from the longitudinal center of the second finger 152 to both longitudinal sides, It is possible to prevent the end of the sliding finger portion 150 from being lifted while smoothly allowing inclination due to relative rotation between the first structure 20 and the second structure 30.

The rest is the same as described in FIGS. 1 to 4, 9, and 10.

The present invention is installed between two structures arranged with a gap, for example, neighboring bridge decks or logistics centers, to create a finger joint to allow vehicles to pass smoothly over the gap. There is a possibility that it will be used.

10: gap 20: first structure
30: Second structure 100: Two-way isolation finger joint
110: first base plate 114: stainless steel plate
120: Second base plate 124: Strip-shaped stainless steel plate
130: fixed finger part 132: first finger
134: first connection 136: first finger groove
138: Separation prevention catch 140: Support member
150: sliding finger part 152: second finger
154: second connection 156: second finger groove
157a, 157b: Spherical groove 158: Negative reaction force resistance stopper
159: upward slope 159a: first protrusion
160a, 160b: Spherical block 160c: Cylindrical block
170: Guide 180: Fixing mechanism
190: end lifting prevention part 192: downward slope
192a: Second protruding jaw

Claims (12)

A first base plate for installation at the end of the first structure;
a second base plate for installation on an end of the second structure that is installed facing the first structure with a gap between them;
a fixing finger portion having a plurality of first fingers arranged at intervals and fixedly installed on the first base plate through a fixing mechanism;
It is provided with a plurality of second fingers that can each be inserted movably in the axial direction into a plurality of first finger grooves formed between the plurality of neighboring first fingers, and a plurality of the second fingers are provided between the plurality of second fingers. A second finger groove is formed into which one finger can be inserted, and a sliding finger portion is installed on the second base plate to be movable in a direction perpendicular to the bridge axis; and
A guide part installed on the second base plate to guide the sliding finger portion in a direction perpendicular to the diaphragm axis and to limit movement in the diaphragm direction,
A spherical groove and/or a cylindrical groove are formed on the bottom of the sliding finger portion, and the sliding finger portion is coupled to the spherical groove and/or the cylindrical groove to allow inclination of the sliding finger portion. A spherical block having a convex spherical surface. and/or supported on the first base plate or the second base plate or the first base plate and the second base plate through a cylindrical block having a cylindrical surface,
A two-way isolation finger joint, characterized in that movement of the sliding finger portion in the throttling direction is restricted by the spherical block and/or the cylindrical block being caught by the guide portion. The method of claim 1, wherein the guide portion is installed on the second structure or the second base plate, and the end of the sliding finger portion opposite the fixed finger portion is positioned in a state where the guide portion restricts movement of the sliding finger portion in the throttling direction. A two-way isolation finger joint comprising an end lifting prevention portion to prevent upward lifting. The bi-directional device of claim 2, wherein an upwardly inclined surface is formed at an end of the sliding finger opposite to the fixed finger, and the end lifting preventing portion has a downwardly inclined surface facing the upwardly inclined surface. Isolated finger joints. The method of claim 2, wherein a first protruding protrusion is formed at an end of the sliding finger opposite to the fixing finger, and the end lifting prevention portion is disposed to face the first protruding protrusion to form the first protruding protrusion. A two-way isolation finger joint characterized by having a second protruding jaw to prevent upward lifting. The method of any one of claims 1 to 4, wherein a negative reaction force resistance engaging portion is formed between the first finger or the first finger and the first base plate, and the negative reaction force resistance is applied to the second finger. A two-way isolation finger joint comprising a negative reaction force resistance locking protrusion that prevents the second finger from being lifted upward by being caught by the portion. The method of claim 5, wherein the fixing finger is supported by a support member and installed to be spaced upward with respect to the first base plate, so that a negative reaction force resistance engaging portion is formed between the first finger and the first base plate, The negative reaction force resistance locking protrusion is attached to the bottom of the second finger and a portion of it is formed by a locking protrusion member that protrudes to the side of the second finger and catches the bottom edge of the first finger. Isolated finger joints. The method of claim 6, wherein even if the support member and the locking ledge collide with each other, the second finger moves in a direction perpendicular to the bridge axis in the first finger groove to prevent the support member and the locking ledge from being caught by each other. A two-way isolation finger joint, characterized in that the edge of the support member and the edge of the locking protrusion are chamfered. The method of claim 5, wherein the negative reaction force resistance locking portion has a groove formed along a side of the first finger, and the negative reaction force resistance locking protrusion is coupled to a hole formed in the second finger, and a portion of the negative reaction force resistance locking portion is located on the side of the second finger. A two-way isolation finger joint comprising a pin or a locking protrusion member that protrudes and is coupled to the groove. delete delete The method according to any one of claims 1 to 4, wherein the first base plate has a stainless steel plate installed on the entire surface to support the second finger so that it can move, and the second base plate supports the sliding finger. A two-way isolation finger joint characterized in that it has a strip-shaped stainless steel plate installed so that it can be moved in a direction perpendicular to the bridge axis while being supported along one side of the rear end of the guide part. The method according to any one of claims 1 to 4, wherein the extent to which the second finger is coupled to the first finger groove is adjusted according to the gap between the sliding finger portions, and the first structure and the second A two-way isolation finger joint, characterized in that the degree of movement in the direction perpendicular to the bridge axis is adjusted according to the degree of displacement in the direction perpendicular to the bridge axis between the structures.

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