JP2006183248A - Expansion joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expansion joint capable of following even to deformations not only in the horizontal direction but also in the vertical direction without generating a stepped section. <P>SOLUTION: The expansion joint has a first cover body 2 in which a base end section is connected in a rockable manner in the vertical direction to the outer peripheral section of one structure, a second cover body 3, in which the base end section is connected in the rockable manner in the vertical direction of a first front end section, and a third cover body 4 in which the base end section is connected in the rockable manner in the vertical direction to the outer peripheral section of the other structure. In the expansion joint, the front end section of the second cover body 3 and the front end section of the third cover body 4 are overlapped and arranged while the second cover body 3 and the third cover body 4 are urged and abutted. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an expansion joint installed between opposing outer peripheral portions of a structure in order to cover a gap between adjacently arranged structures such as an expansion part of a building, and in particular, for walking and passing. The present invention relates to an expansion joint that is preferably used for erection between outer peripheral portions of a structure provided for use.

  An expansion joint is used to cover a gap between two structures arranged close to each other, such as an expansion portion of a building. An expansion joint that has been generally used in the past includes a cover body that is a plate-like member, and each end of the cover body is constructed so as to straddle between the opposing outer peripheral portions of two structures. Prepare. Only one of the end portions of the cover body is fixed to the outer peripheral portion of one structure with a screw or the like, and the other end portion is not fixed to the outer peripheral portion of the other structure. Placed.

  According to such a configuration, the end of the cover body that is not fixed can freely move on the upper surface of the outer peripheral portion of the structure, so that a gap appears even if the interval between the structures changes. There is no. However, this cover body cannot follow the deformation of the structure in the vertical direction because any one end is fixed to either structure.

  In order to follow the vertical deformation of the structure, one end portion of the cover body is swingable in the vertical direction with respect to the one structure, and is connected so as to be stretchable in the vertical direction, and the other end portion. Has been proposed (see Patent Document 1).

  According to the configuration described in Patent Document 1, when the structure is deformed in the vertical direction and there is a difference in the heights of the upper surfaces of both structures, the cover body swings or expands and contracts in the vertical direction. Thus, the difference in height can be followed.

Japanese Patent Laid-Open No. 2003-301531

  However, according to the configuration described in Patent Document 1, since one end of the cover body rises to follow the difference in height of the upper surface of the structure, there is a step between the upper surface of the structure and the cover body. Will occur. It is also possible to follow the difference in height of the upper surface of the structure only by swinging the cover body in the vertical direction, but in this case, the cover body is not connected to the structure at each end. Since the end portion on the side is lifted from the outer peripheral portion of the structure, a step is also generated. For this reason, smooth walking and traffic may be hindered.

  In view of the above situation, the problem to be solved by the present invention is that, even if the interval between adjacent structures fluctuates, the gap does not appear following the deformation, and the structure is deformed in the vertical direction. Even when there is a difference in the height of the upper surface of the cover, there is provided an expansion joint that does not interfere with smooth walking and traffic without causing a step due to the floating of the cover body.

  In order to solve such a problem, the invention according to claim 1 is an expansion joint constructed between outer peripheral portions of adjacent structures, and a base end portion of the outer peripheral portion of one structure. A first cover body that is swingably connected in the vertical direction, a second cover body whose base end portion is connected to the first distal end portion so as to be swingable in the vertical direction, and the base end portion is the other A third cover body that is swingably coupled in a vertical direction with respect to the outer peripheral portion of the structure, and the distal end portion of the second cover body and the distal end portion of the third cover body overlap each other. It is the gist that it is arranged.

  Here, it is preferable to include a biasing unit that biases and contacts the second cover body and the third cover body.

  According to the first aspect of the present invention, when the first structure and the second structure are deformed and the horizontal interval fluctuates, the second cover body and the third cover body are Since they are in an overlapping state, the second cover body and the third cover body slide relative to each other, so that the horizontal deformation can be followed. On the other hand, when the first structure and the second structure are deformed in the vertical direction and there is a difference in height between the two structures, the first cover body is inclined or the second structure By tilting the cover body and the third cover body, the two structures can be connected without causing a step. For this reason, it does not interfere with smooth walking or traffic.

  According to the second aspect of the present invention, since the urging force is applied so that the second cover body and the third cover body are not separated from each other, the third cover body is lifted from the surface of the second cover body. There is nothing. For this reason, smoother walking and traffic can be ensured.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a sectional view schematically showing the structure of an embodiment of an expansion joint according to the present invention. As shown in FIG. 1, the expansion joint 1 is constructed between outer peripheral portions of a first structure 91 and a second structure 92 that are arranged close to each other. On the first structure 91 side, the first cover body 2 is connected with a substantially plate-like member so that the base end of the first structure 91 is swingable in the vertical direction with respect to the first structure 91. And a second cover body 3 which is a substantially plate-like member and whose base end portion is connected to the first cover body 2 so as to be swingable in the vertical direction. On the other hand, on the side of the second structure 92, the third cover body 4 is provided so as to be swingable in the vertical direction with respect to the second structure 92.

  Although the kind and structure of the first structure 91 and the second structure 92 are not limited, the upper surfaces thereof are substantially horizontal, and are structures used for walking and passing. In FIG. 1, the first structure 91 is a sidewalk constructed so as to straddle the split-shaped land, and the second structure 92 is an open deck-shaped structure constructed on the split-shaped land. The expansion joint 1 is an example of a structure constructed so as to be able to travel between the sidewalk and the open deck.

  Here, FIG. 1 shows the upper surfaces 910 and 920 of the first structure 91 and the second structure 92 (that is, surfaces used for walking and passing, respectively, hereinafter referred to as “passing surfaces”). .) Shows a state in which the heights match. Hereinafter, this state is referred to as “normal state”.

  A step surface 911 that is one step lower than the passage surface 910 is formed on the outer periphery of the first structure 91. A fixing member 912, which is a plate-like member having a substantially L-shaped cross section, is disposed on the step surface 911, and is fixed to the first structure 91 with an anchor bolt (not shown) or the like. This fixing member is a member formed by bending a metal plate material, for example. The fixing member 912 is provided with a connecting arm 913 for connecting the first cover body 2 and a support member 914 for supporting the vicinity of the distal end portion of the first cover body 2 from below.

  Similar to the first structure 91, a step surface 921 that is one step lower than the passage surface 920 is formed on the outer periphery of the second structure 92. A fixing member 922, which is a plate-like member having a substantially L-shaped cross section, is disposed on the step surface 921 and is fixed to the second structure 92. Further, a guide rail 925 is laid on the step surface 921 along the erection direction of the expansion joint 1. A guide roller 926 is disposed in the vicinity of the tip of the guide rail (here, the end near the first structure 91). The guide rail 925 is laid so that a guide roller 32 disposed on a second cover body 3 to be described later can roll, and the guide roller 926 disposed on the guide rail 925 includes a second cover. This is for supporting the body 3 from below. Further, a bolt 927 protrudes upward from the step surface 921.

  The first cover body 2 is a member which is formed in a substantially plate shape and is connected to the first structure 91 so as to be swingable in the vertical direction. In FIG. 1, a connecting arm 22 is provided on the lower surface in the vicinity of the base end portion of the first cover body 2, and the connecting arm 22 and a connecting arm 913 provided on the fixing member 912 are connected by a pin 81. Indicates. With such a configuration, the first cover body 2 can swing in the vertical direction with respect to the first structure 91 around the pin 81. In the normal state, the lower surface near the tip of the first cover body 2 is supported by the support member 914 of the fixing member 912, and is maintained in a substantially horizontal state. The swing range of the first cover body 2 is restricted by the support member 914, and the first cover body 2 does not tilt so that the distal end side is lower than the proximal end side.

  The second cover body 3 is a member that is formed in a substantially plate shape, and a base end portion of the second cover body 3 is connected to the front end portion of the first cover body 2 so as to be swingable in a vertical direction. FIG. 1 shows a configuration in which the base end portion of the second cover body 3 and the tip end portion of the first cover body 2 are connected by the connecting pin 82 and can swing around the connecting pin 82. The second cover body 3 is arranged so that its tip end portion is superimposed on a guide rail 925 laid on the step surface 921 of the second structure 92. A rotatable guide roller 32 is disposed at the tip of the second cover body 3, and the guide roller 32 is arranged on a guide rail 925 laid on the step surface 921 of the second structure 92. Can roll. In a normal state, the second cover body 3 is supported from below by a guide roller 926 disposed on the guide rail 925. Therefore, the second cover body 3 can reciprocate on the guide rail 925 while maintaining a substantially horizontal state.

  The third cover body 4 is formed in a substantially plate shape, and a base end portion of the third cover body 4 is connected to the second structure 92 so as to be swingable in the vertical direction. In FIG. 1, the auxiliary plate 42 projects substantially horizontally toward the first structure 91 on a vertical surface formed between the step surface 921 and the passage surface of the second structure 92. The third cover body 4 has a configuration in which the base end portion thereof is connected to the auxiliary plate 42 via a hinge 83. With such a configuration, the third cover body 4 can swing in the vertical direction with respect to the second structure 92. In addition, as shown in FIG. 1, the structure which connects a hinge etc. to the fixing member 922 directly, without using the auxiliary | assistant board 42 may be sufficient.

  The third cover body 4 is disposed so that a portion near the tip thereof is superimposed on the upper side of the second cover body 3, and is pressed against the upper surface of the second cover body 3 by a biasing means with a biasing force. Yes. In FIG. 1, a frame body 43 is formed on the lower surface side of the third cover body 4, and a compression coil spring is interposed between the frame body 43 and a nut 928 screwed into a bolt 927 protruding from a fixing member 922. 929 shows the structure by which 929 is constructed. According to such a configuration, the third cover body 4 is pressed against the upper surface of the second cover body 3 by the biasing force of the compression coil spring 929.

  Next, operation | movement of this expansion joint 1 provided with such a structure is demonstrated. FIG. 2 is a diagram schematically showing the operation of the present expansion joint 1. In actual operation, the first structure 91 and the second structure 92 are deformed, and as a result, the positional relationship between the structures 91 and 92 changes relatively. In the following description, For convenience of explanation, the first structure 91 is not deformed, and only the second structure 92 is treated as being deformed.

  FIG. 2A is a diagram illustrating a state in which the height of the passage surface 920 of the second structure 92 is higher than the height of the passage surface of the passage surface 910 of the first structure 91. In such a case, the second cover body 3 is supported at a base end portion thereof by a guide roller 926 disposed on the guide rail 925 and is maintained substantially horizontal. And the 3rd cover body 4 overlaid on the upper surface of the 2nd cover body 3 is also in a horizontal state, and the 3rd cover body 4 and the 2nd cover body 3 do not leave | separate. On the other hand, the first cover body 2 is tilted so that the tip portion thereof rises with the deformation of the second structure 92. Thus, when the height of the passage surface 920 of the second structure 92 is higher than the height of the passage surface 910 of the first structure 91, the first cover body 2 is inclined, The connection is made without a stepped surface.

  FIG. 2B is a diagram showing a state where the height of the passage surface 920 of the second structure 92 is lower than the height of the passage surface 910 of the first structure 91. In such a case, since the first cover body 2 is supported by the support member 914, the first cover body 2 is maintained substantially horizontal (that is, the first cover body 2 is lowered from the proximal end portion toward the distal end portion. Will not tilt as you would). Further, the height of the base end portion of the second cover body 3 does not change, but the tip end portion descends as the second structure 92 is deformed, and therefore the second cover body 3 descends from the base end portion toward the tip end portion. To tilt. On the other hand, the third member has a base end part that moves down integrally with the second structure 92, but the front end part is in contact with the upper surface of the second cover body 3. Tilt to rise. As described above, when the height of the passage surface 920 of the second structure 92 is lower than the height of the passage surface 910 of the first structure 91, the second cover body 3 and the third cover body. By inclining 4, the connection is made without generating a step surface. Note that the distal end portion of the third cover body 4 may be biased by the compression coil spring 929 and is maintained in a state of abutting on the upper surface of the second cover body 3. For this reason, the front-end | tip part of the 3rd cover body 4 does not float up, and does not become a hindrance to smooth walk and passage.

  In FIG. 2C, the height of the passage surface 920 of the second structure 92 is higher than the height of the passage surface 910 of the first structure 91, and the first structure 91 and the first structure 91 The state where the space | interval between two structures 92 became small is shown. In such a case, the deformation in the vertical direction can be followed without a step by the same operation as that shown in FIG. That is, the base end portion of the second cover body 3 is supported by the guide roller 926 disposed on the guide rail 925 and is maintained substantially horizontal. And the 3rd cover body 4 overlaid on the upper surface of the 2nd cover body 3 is also in a horizontal state, and the 3rd cover body 4 and the 2nd cover body 3 do not leave | separate. Further, the first cover body 2 is inclined so that the distal end portion thereof rises with the deformation of the second structure 92. In this way, the first cover body 2 is tilted so that the connection is made without generating a step surface. On the other hand, the deformation in the horizontal direction can be followed by the relative movement in the horizontal direction between the third cover body 4 and the guide rail 925 and the second cover body 3.

  FIG. 2D shows that the height of the passage surface 920 of the second structure 92 is lower than the height of the passage surface 910 of the first structure 91 and the first structure 91 and the second structure. It is the figure which showed the state where the space | interval between 92 became small. In such a case, the deformation in the vertical direction can be followed without a step by the same operation as that shown in FIG. That is, since the first cover body 2 is supported by the support member 914, it is maintained substantially horizontal. The height of the base end portion of the second cover body 3 does not change, but the tip end portion descends with the deformation of the second structure 92, so that the second cover body 3 descends from the base end portion toward the tip end portion. Tilt. Further, the third member has a base end part that moves down integrally with the second structure 92, but the tip end part is in contact with the upper surface of the second cover body 3. Tilt to rise. In this way, the second cover body 3 and the third cover body 4 are inclined, so that they are connected without causing a step surface. On the other hand, the horizontal deformation follows the relative movement of the third cover body 4 and the guide rail 925 and the second cover body 3 in the same manner as the operation shown in FIG. can do. Note that the tip of the third cover body 4 may be urged by the compression coil spring 929, and the horizontal positional relationship between the second cover body 3 and the third cover body 4 varies. Is also maintained in contact with the upper surface of the second cover body 3. For this reason, the front-end | tip part of the 3rd cover body 4 does not float up, and does not become a hindrance to smooth walk and passage.

  As described above, according to the expansion joint according to the present invention, not only when the adjacent structures are deformed in the horizontal direction, but also when the structures are deformed in the vertical direction, the upper surfaces of both structures. Can be connected without a step. For this reason, even if it is a case where it uses for a walk and traffic, since a level | step difference does not arise in a traffic surface, smooth walk and traffic can be ensured.

  As mentioned above, although various embodiment of this invention was described in detail, this invention is not limited to the said various embodiment at all, and various modification | change is possible in the range which does not deviate from the meaning of this invention.

It is sectional drawing which showed typically the expansion joint saw object which concerns on embodiment of this invention, and shows the state in which the height of a 1st structure and the height of a 2nd structure correspond. It is the figure which showed the operation | movement of the said expansion joint typically, (a) is the figure which showed the state which the 2nd structure 92 deform | transformed upwards from the 1st structure 91, (b) is the 2nd The figure which showed the state which the structure 92 deform | transformed below the 1st structure 91, (c) is the 2nd structure 92 deform | transformed above the 1st structure 91, and the 1st structure The figure which showed the state which the space | interval of 91 and the 2nd structure 92 became small, (d) is the 2nd structure 92 deform | transformed below the 1st structure 91, and the 1st structure It is the figure which showed the state from which the space | interval of 91 and a 2nd structure became small.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Expansion joint 2 1st cover body 3 2nd cover body 4 3rd cover body 22 Connection arm 32 Guide roller 42 Auxiliary board 43 Frame 81 Pin 82 Connection pin 83 Hinge 91 1st structure 92 2nd Structure 910 Passing surface 911 Step surface 912 Fixing member 913 Connecting arm 914 Bearing member 920 Passing surface 921 Step surface 922 Fixing member 925 Guide rail 926 Guide roller 927 Bolt 928 Nut 929 Compression coil spring

Claims (2)

  A first cover, which is an expansion joint erected between the outer peripheral parts of the structures arranged close to each other, and whose base end part is connected to the outer peripheral part of one structure so as to be swingable in the vertical direction. A body, a second cover body whose base end portion is connected to the first tip portion so as to be swingable in a vertical direction, and a base end portion swinging in a vertical direction with respect to the outer peripheral portion of the other structure. An expansion joint comprising: a third cover body that can be connected, wherein the tip end portion of the second cover body and the tip end portion of the third cover body are arranged to overlap each other. The expansion joint according to claim 1, further comprising a biasing unit that biases the second cover body and the third cover body into contact with each other.

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