TW201533306A - Flexible joint member and telescopic joint for cement structure - Google Patents

Abstract

To provide a flexible joint member capable of easily deforming to a desired shape while absorbing pressure sustained from a target part. A flexible joint member configured as a target part across a cement structure and made of flexible material, it also comprising pressing parts located at two sides for pressing the cement structure; and a folding part located between the pressing parts at two sides and foldably configured to absorb pressure received from the target part, the folding part having folding processing parts which have been processed to be easily foldable.

Description

Flexible joint member and expansion joint for cement structure Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a flexible joint member for use in an expansion joint for a cement structure, and more particularly to a flexible joint member which is disposed between a cement structure and a flexible joint member. .

Background technique

In the destination portion of the connection portion such as a water passage or a common trench which is a cement structure constructed by cement, which is constructed in an underground culvert or the like, the inner and outer water stops are performed. At this time, the cement structures on both sides are unevenly piled up, or the interval between the cement structures on both sides of the gripping target portion is deviated due to the influence of earthquakes, etc., in order to allow such deviations, cement structures are used. Expansion joints. Such an expansion joint for a cement structure is known, for example, in Patent Document 1. The expansion joint for a cement structure uses a flexible joint member which is disposed so as to straddle the target portion between the cement structures and is made of a flexible material.

In general, the flexible joint member includes: a pressing portion which is located on both sides and is pressed against the cement structure; and a folded portion which is located between the pressing portions on both sides and is folded and arranged to be absorbed from the target portion The pressure to withstand.

The folded portion is usually bent and formed into, for example, a bellows shape. Figure 6 shows the folded portion 25 which has been bent and formed into a bellows shape and is disposed on it. Layer 26. The pressure from the target portion is absorbed by the stretching of the folded portion 25. If the interval between the destinations becomes larger, the pressure to withstand becomes greater. When a bent portion such as a bellows is applied to a target portion having a certain width, in order to absorb a larger pressure, the expanded flexible joint member must form a larger space, and it is generally considered that the bending number of the snake belly is made constant. The bending height is increased, or the bending height is made constant to increase the bending number of the snake belly, thereby increasing the substantial length of the folding portion.

Advanced technical literature Patent literature

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2010-150807

Invention

However, when the bending number of the snake belly is made constant and the bending height is increased, the height of the protrusion of the snake belly becomes high, and the mold device for shaping the curved portion of the bellows must be enlarged, and the mold device becomes expensive. . Moreover, when the bending height is made constant and the bending number of the snake belly is increased, the bending interval of the bellows is shortened, and the flexible material is sharply bent into a right angle, and the flexible material cannot be bent safely. The problem of folding and shaping. In any case, there is a limit to making the flexible joint member a bellows-shaped bent portion.

Therefore, the present invention solves the problems of the prior art described above and provides a flexible joint member that can be easily shaped into a desired shape to absorb the pressure from the target portion.

In order to solve the above problems, the flexible joint member according to the present invention is disposed at a portion that spans between the cement structures and is composed of a flexible material, and further includes a pressing portion that is located on both sides and is pressed The cement structure; and the folded portion are located between the pressing portions on both sides, and are folded and arranged to absorb the pressure received from the target portion; and the folded portion has a folding processing portion that has been processed to be easily folded.

Further, the folding processing portion is formed to have a thinner thickness than the adjacent portion.

Further, the folding treatment portion is chemically treated to be easily folded than the adjacent portion.

Further, in the state in which the folded portion is folded and disposed in a cross-sectional view, the bottom portion is tapered, and both side portions are formed in an S-shape and an inverted S-shape.

Further, the folding processing unit is located in the S-shape of the side portion and the curved portion of the inverted S-shape.

Further, the expansion joint for a cement structure according to the present invention includes: a flexible joint member which is disposed so as to straddle a target portion between the cement structures and is composed of a flexible material; and a fixing portion for The flexible joint member is pressed and fixed to the cement structure; the flexible joint member includes: a pressing portion which is located on both sides and is pressed against the cement structure; and a folded portion which is located between the pressing portions on both sides And folded, arranged to absorb pressure from the aforementioned target portion; the folded portion has a folding treatment portion that has been processed to be easily folded.

According to the configuration of the present invention, since the flexible joint member has a folding processing portion that has been processed to be easily folded, it can be easily shaped into a desired shape and absorbed from the object by bending by the folding processing portion. The pressure on the part.

1‧‧‧Flexible joint members

2‧‧‧cement structure

2a‧‧‧ face

3‧‧‧ Target Department

4‧‧‧ Pressing Department

4a‧‧‧ Protrusion

5,25‧‧‧Folding

5a‧‧‧S-shaped department

5b‧‧‧Inverted S-shaped part

5c‧‧‧ bottom

5d‧‧‧ top

6‧‧‧Apartment

7,7a,7b‧‧‧Folding Processing Department

9‧‧‧Fixed Department

10‧‧‧Fixed unit

11‧‧‧The Ministry of Pressure

12‧‧‧ bolt

13‧‧‧ Nuts

14‧‧‧Fixed bolt cap

18‧‧‧ Washer

19,26‧‧‧ outer rubber

19a‧‧‧End

20‧‧‧Expansion joints for cement structures

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the shape of a factory showing an embodiment of a flexible joint member according to the present invention.

Fig. 2 is a view showing the shape of a state in which a flexible joint member is folded for field setting.

Fig. 3 is a view showing a state in which a flexible joint member is placed on site and subjected to pressure from a target portion to expand.

Fig. 4 is a view showing an example in which the flexible joint member according to the present invention is applied to an expansion joint for a cement structure.

Fig. 5 is a plan view showing an expansion joint for a cement structure corresponding to Fig. 4.

Figure 6 is a diagram showing a conventional folded portion.

The best form for implementing the invention

An embodiment of the flexible joint member according to the present invention will be described with reference to Figs. 1 to 4 .

Fig. 1 is a cross-sectional view showing the flexible joint member 1 before being placed in the factory portion 3 disposed between the cement structures 2 and 2 and being shipped from the factory. The flexible joint member 1 is formed of a flexible member such as a rubber material to prevent water, and includes: block-shaped pressing portions 4, 4 on both sides, and pressed to the cement structures 2, 2; And the thin plate-shaped folded portion 5 is located between the pressing portions 4 and 4 on both sides, and is folded and arranged to absorb the pressure received from the target portion 3.

The folding portion 5 has a plurality of folding processing portions 7 that have been processed to be easily folded. The folded portion 5 has two folding processing portions 7a on the center side and two folding processing portions 7b on the outer side. In the present embodiment, the folding processing unit 7 is processed to form the wall thickness thinner than the adjacent portion. For example, the wall thickness of the folding treatment portion 7 is 6 mm with respect to the wall thickness of the adjacent portion of 8 mm. The folding processing section 7 is processed in a length range of 10 mm to 20 mm, respectively. The interval between the adjacent folding processing portion 7a and the folding processing portion 7b is about 30 mm, and the interval between the folding processing portion 7a and the other folding processing portion 7a is about 13 mm. The length of the pressing portion 4 to the pressing portion 4 of the flexible joint member 1 is, for example, about 450 mm.

Fig. 2 is a cross-sectional view showing the flexible joint member 1 in a folded state for the purpose portion 3 disposed between the concrete structures 2 and 2. The flexible joint member 1 is formed to be bilaterally symmetrical with respect to the center line 9. In the folded and disposed state shown in FIG. 2, the bottom portion 5c of the flexible joint member 1 is thinner than the upper portion, and the left side portion is formed into an S-shaped portion 5a, and the right side portion is formed as an inverted S-shaped portion 5b. . The top portion 5d is formed to be substantially flat. The folding processing portion 7a is located at a bent portion of the upper portion of the S-shaped portion 5a, and the folding processing portion 7b is located at a lower bent portion. Similarly, the folding processing portion 7a is located at the bent portion of the upper portion of the inverted S-shaped portion 5b, and the folding processing portion 7b is located at the lower bent portion. The flexible joint member 1 is formed with S-shaped portions 5a and inverted S-shaped portions 5b on both sides, and is largely collapsed with respect to the bottom portion 5c and the top portion 5d.

The flexible joint member 1 shown in FIG. 2 is different from the plurality of folds folded into a bellows, and the fold portion across the target portion 3 is singulated into one. Moreover, since the folding processing unit 7 is formed, the folding processing unit 7 can be easily bent, and can be effectively and easily bent without using a mold device.

3 is a view showing the purpose of disposing the flexible joint member 1 shown in FIG. 2 between the concrete structures 2 and 2, and then changing from the folded state to the expanded state by the pressure received from the target portion 3. Flexible joint member 1.

Although the folded portion of the flexible joint member 1 shown in FIG. 2 is singulated into one, the S-shaped portion 5a and the inverted S-shaped portion 5b are formed on both sides, and the upper portion 5c overlaps with the top portion 5d. As shown in FIG. 3, the flexible joint member 1 in an expanded state can form a wide space in which the pressure can be absorbed, that is, the interval between the pressing portions 4 and 4 on both sides is made to have a diameter. a semicircular portion; and a linear portion on both sides.

Next, a second embodiment of the flexible joint member 1 of the present invention will be described.

In the present embodiment, the folding processing unit 7 is chemically processed to be easily folded than the adjacent portion. The chemical treatment includes the folding treatment portion 7 being formed into a chemical treatment having a rubbery elasticity larger than that of the adjacent portion. Further, the folding treatment portion 7 may be formed into a sponge shape to achieve a lower density. Further, in order to chemically treat the folding treatment portion 7 to be more easily deformed than the adjacent portion, oil or the like may be applied to the folding treatment portion 7 as a chemical treatment. Further, the folding treatment portion 7 may be formed of a material different from the adjacent portion, and may be integrally formed with the adjacent portion.

Next, an example in which the flexible joint member 1 is applied to an expansion joint for a cement structure will be described with reference to Figs. 4 and 5 .

The expansion joint 20 for a cement structure includes a flexible joint member 1 that is disposed so as to straddle the target portion 3 between the cement structures 2 and 2, and is constructed of a flexible material. And a plurality of fixing portions 9 for pressing and fixing the flexible joint member 1 to the cement structures 2, 2.

The flexible joint member 1 includes a pressing portion 4 which is located on both sides and is pressed against the cement structure 2, and a folded portion 5 which is located between the pressing portions 4 on both sides and which is folded and arranged to be absorbed from the target portion 3 The pressure to withstand; the folding portion 5 has a folding processing portion 7 that has been processed to be easily folded.

The fixing portion 9 includes a contact portion 6 having a U-shaped cross section, which covers the pressing portion 4 in the longitudinal direction, and a plurality of fixing units 10 for spacing the longitudinal direction of the abutting portion 6 at a plurality of places. The abutting portion 6 that has been covered by the pressing portion 4 is pressed and fixed to the cement structures 2, 2.

The fixing unit 10 has a pressing portion 11 which is deformed in a U-shaped cross section and covers the abutting portion 6 and a fixing bolt cap 14 which is composed of a bolt 12 and a nut 13 and is used for the pressing portion. 11 is covered with the abutting portion 6 of the pressing portions 4 and 4, and the pressing portion 11 is press-fitted to the cement structure 2, and the pressing portion 4 is pressed against the cement structure 2. The bolt 12 is screwed into the cement structure 2, and the nut 13 passes through the gasket 18 which has been placed on the pressing portion 11, and is fastened to the bolt 12 from the top side of the bolt 12.

The abutting portion 6 that has been covered by the pressing portion 4 is located on the side of the target portion 3 with respect to the bolt 12 in a cross-sectional view. In FIG. 4, the abutting portion 6 on the right side is located on the side of the target portion 3 with respect to the bolt 12 on the right side. The left abutting portion 6 is located on the side of the target portion 3 with respect to the bolt 12 on the left side.

A protruding protrusion 4a is formed on the lower surface of the pressing portion 4. By pressing the pressing portion 4 against the surface 2a of the cement structure 2, the projection 4a is compressed and deformed, and the sealing property is more sure.

The outer layer rubber 19 covers the upper side of the flexible joint member 1, and the end portion 19a of the outer layer rubber 19 is wound between the pressing portion 4 and the abutting portion 6.

Fig. 5 is a plan view showing the expansion joint 20 for a cement structure. As shown in FIG. 5, a plurality of fixing units 10 are disposed at intervals in the longitudinal direction of the abutting portion 6, and by fixing the bolt cap 14, the abutting portion 6 that has been covered by the pressing portion 4 is pressed and fixed to the cement. Structure 4.

When the pressure is applied from the target portion 3, the outer layer rubber 19 is stretched, and the flexible joint member 1 is in an expanded state as shown in Fig. 3, and a wide space capable of absorbing pressure is formed.

According to the present embodiment, since the flexible joint member 1 has the folding processing portion that has been processed to be easily folded, the folding processing portion can be bent without depending on the mold device, whereby the cement can be assembled efficiently and easily. The expansion joint 20 for the structure.

1‧‧‧Flexible joint members

4‧‧‧ Pressing Department

5‧‧‧Folding Department

7,7a,7b‧‧‧Folding Processing Department

Claims (6)

A flexible joint member which is disposed to extend across a target portion between cement structures and is composed of a flexible material, and further includes a pressing portion which is located on both sides and is pressed against the cement structure; The folding portion is located between the pressing portions on both sides and is folded to be configured to absorb the pressure received from the target portion; the folding portion has a folding processing portion that has been processed to be easily folded. The flexible joint member of claim 1, wherein the folding treatment portion forms a wall thickness thinner than an adjacent portion thereof. The flexible joint member of claim 1, wherein the aforementioned folding treatment portion is chemically treated to be easily folded than the adjacent portion. The flexible joint member according to claim 1, wherein the folded portion is folded and disposed in a cross-sectional view, and the bottom portion is tapered, and both side portions are formed in an S-shape and an inverted S-shape. The flexible joint member according to claim 4, wherein the folding processing portion is located in an S-shape of the side portion and a curved portion of the inverted S-shape. An expansion joint for a cement structure, comprising: a flexible joint member disposed to extend across a target portion between the cement structures and composed of a flexible material; and a fixing portion for flexing the foregoing The joint member is pressed and fixed to the cement structure; The flexible joint member includes: a pressing portion which is located on both sides and is pressed against the cement structure; and a folded portion which is located between the pressing portions on both sides and is folded to be absorbed to be absorbed from the target portion Pressure; the aforementioned folded portion has a folding treatment portion that has been processed to be easily folded.