JP5354355B2 - Mounting structure of flexible joint to concrete structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for attaching a flexible joint to a concrete structure, which enables the flexible joint for seismic strengthening to be easily attached even to the concrete structure having a channel formed on a bottom, without becoming a hindrance to a channel; to provide the flexible joint for use in the structure. <P>SOLUTION: A chipped portion 21 for housing the flexible joint 30 is formed in and near the channel 2 of the concrete structure 1; an inside swelling portion 32, which is protruded to the inside 1a of the space of the concrete structure 1, is formed between both end flange 31 in such a manner as to correspond to portions except the channel, in the flexible joint 30; an inverted swelling portion 33 for the channel, which is housed in the chipped portion 21, is continuously formed by turning the inside swelling portion upside down between both the end flanges in such a manner as to correspond to the channel and its vicinity; and the flexible joint 30 is attached in such a manner as to be lower than the bottom of the channel in the channel 2. Thus, a chipping range is greatly reduced; even the flexible joint 30 crossing the channel 2 does not become a hindrance to a downflow function; and construction is easily performed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a mounting structure of the flexible joint of the concrete structure F, the water facilities waterways, distributing reservoir, for seismic reinforcement joint portion of the existing bottom concrete structure having a water channel portion of such water pond The mounting structure for attaching the flexible joint and the flexible joint can prevent the function of the water channel portion from being hindered.

  Among concrete structures that need to be installed with flexible joints for seismic reinforcement, there are waterways, distribution ponds, water supply ponds, etc. of water facilities. For example, as shown in FIG. Some have a concave groove to be the water channel 2 at the bottom.

  When a flexible joint is to be installed so as to straddle the joint portion 3 with the concrete structures 1 and 1 having such a water channel portion 2, the flexible joint 4 is connected to the joint portion 3 as shown in FIG. The first joint material 5 that covers the horizontal portion of the first joint material 5 and the second joint material 6 that covers the vertical portion of the first joint portion 5, the convex body 5 a of the first joint portion 5 is located inside the space of the concrete structures 1, 1. The protrusions 6a of the second joint material 6 are accommodated in the joint portions 3 of the concrete structures 1 and 1 in the vertical portion.

  In such a flexible joint 4, the convex part 5a of the 1st joint material 5 arrange | positioned at a horizontal part crosses the water channel part 2, and inhibits the function of a water channel.

  Therefore, in the horizontal portion of the joint portion 3, as shown in FIG. 10B, it is conceivable to store the convex portion 5a in the joint portion 3 of the concrete structure 1, 1 as in the vertical portion ( (See Patent Document 1).

JP 2007-56448 A

  However, when the flexible joint 4 traverses the water channel portion 2 of such a concrete structure 1, 1, the flexible joint 4 is larger than the height of the flexible joint 4, and the flexible joint 4 is larger than the bottom height of the water channel portion 2. It is necessary to work so that the horizontal height of the horizontal part is lower, compared to the case where the concrete structure 1,1 is newly installed and the flexible joint is attached, especially in the existing concrete structure 1,1. On the other hand, when a flexible joint is attached, there is a problem that large-scale suspension work is required.

  In addition, it is desired to develop a flexible joint that can be easily constructed without obstructing the water channel even in a concrete structure in which a concave water channel is formed at the bottom.

The present invention has been made in view of such prior art and demands, and it is possible to easily provide a flexible joint for seismic reinforcement without hindering a water channel even in a concrete structure in which a water channel is formed at the bottom. is intended to provide a mounting structure of the flexible coupling to the concrete structure can be attached.

  In order to solve the above-mentioned problems, the flexible joint mounting structure to a concrete structure according to claim 1 of the present invention is a joint portion in which the ends of a concrete structure having a concave water channel portion formed at the bottom face each other. A flexible joint mounting structure to a concrete structure to which a flexible joint having flanges at both ends is mounted so that the flexible joint is housed in and near the water channel portion of the concrete structure. A floating portion is formed, and the flexible joint is formed with an inner bulging portion projecting inside the space of the concrete structure between the both end flange portions corresponding to other than the water channel portion, and the water channel portion and its vicinity. Corresponding to the both end flanges, the inner bulging portion is reversed to continuously form the inverted bulging portion for the water channel portion to be accommodated in the suspension portion, and the flexible joint is configured as the water channel. Part Are those characterized by being configured to attach lower than water channel bottom.

  According to a second aspect of the present invention, in addition to the structure of the first aspect, the flexible joint has a structure in which the inner bulging portion has two convex plate portions. And the inverted bulging portion is constituted by one reverse convex plate portion obtained by inverting the two convex plate portions.

  Furthermore, the flexible joint mounting structure to the concrete structure according to claim 3 of the present invention is not limited to the structure according to claim 1 or 2, and the press plate is provided on the inverted bulging portion of the flexible joint. It is characterized by the fact that it is attached by hitting.

According to a fourth aspect of the present invention, in addition to the structure of the third aspect , the attachment structure of the flexible joint to the concrete structure according to the fourth aspect of the present invention is such that the upper part of the holding plate that is attached to the inside of the water channel portion is opened. It is characterized by being formed in a U-shape.

Furthermore, the structure for attaching a flexible joint to a concrete structure according to claim 5 of the present invention is not limited to the structure according to claim 3, and the presser plate is anchored to both end flange portions of the flexible joint. It is configured to be used in combination with two fixing members that are fixed to each other.

  According to the structure for attaching a flexible joint to a concrete structure according to the first aspect of the present invention, the end of the concrete structure in which a concave water channel portion is formed at the bottom portion straddles the joint portion facing each other. An attachment structure of a flexible joint to a concrete structure to which a flexible joint having flanges at both ends is attached, and a suspension part capable of accommodating the flexible joint in the water channel part of the concrete structure and in the vicinity thereof. The flexible joint is formed with an inner bulging portion projecting inside the space of the concrete structure between the both end flange portions corresponding to other than the water channel portion, and corresponding to the water channel portion and the vicinity thereof. The inner bulge portion is reversed between the both end flange portions to continuously form a reverse bulge portion for a water channel portion to be accommodated in the suspension portion, and the flexible joint is configured as a water channel in the water channel portion. The bottom Since it is configured to be mounted low, a suspension portion that can accommodate a flexible joint is formed only in the water channel portion and the vicinity thereof, and a reverse bulging portion obtained by inverting the bulging portion of the flexible joint is accommodated in the water channel portion, The other part can be installed by installing an inner bulge that protrudes inside the space of the concrete structure, so that the crane range can be greatly reduced, and a flexible joint is attached lower than the bottom height of the water channel It can be easily constructed without hindering the flow down function.

  According to the structure for attaching a flexible joint to a concrete structure according to a second aspect of the present invention, the flexible joint comprises the inner bulging portion formed by connecting two convex plate portions. Since the inverted bulge portion is composed of one reverse convex plate portion obtained by inverting the two convex plate portions, the reverse portion between the two convex plate portions of the inner bulge portion is reversed. By making the inverted bulge part as a convex plate part, the inner bulge part and the reverse bulge part can be formed continuously, and the flexible joint can be easily attached lower than the bottom height of the water channel part. .

  Furthermore, according to the attachment structure of the flexible joint to the concrete structure according to claim 3 of the present invention, on the inverted bulge portion of the flexible joint, a pressing plate is applied so as to attach. By covering the reverse bulging portion with the presser plate, the reverse bulging portion can be protected, and a water channel can be reliably secured.

  According to the structure for attaching a flexible joint to a concrete structure according to claim 4 of the present invention, the holding plate is formed in a U-shape with an upper portion opened inside the water channel portion. Since it comprised, the water channel part of a joint part can be continued more reliably by using it as the U-shaped holding plate which the upper part opened, and a water channel can be ensured simultaneously with seismic reinforcement.

  Furthermore, according to the structure for attaching a flexible joint to a concrete structure according to claim 5 of the present invention, the holding plate is fixed to the anchor by being pressed against both end flange portions of the flexible joint. Since it is also used as a holding plate, the fixing member that fixes the flanges on both ends to the anchor can also be used as a presser plate. Can be constructed in an effort.

It is the schematic perspective view concerning one Embodiment of the attachment structure of the flexible joint to the concrete structure of this invention, and a cross-sectional view which unites and shows a water channel part and another part. It is a schematic perspective view of the suspension part concerning one Embodiment of the attachment structure of the flexible joint to the concrete structure of this invention. It is the schematic perspective view and schematic sectional drawing of the attachment state of the reverse bulging part concerning one Embodiment of the attachment structure of the flexible joint to the concrete structure of this invention. It is the schematic perspective view and schematic sectional drawing of the attachment state of the press plate to the inversion swelling part concerning one Embodiment of the attachment structure of the flexible joint to the concrete structure of this invention. It is the schematic perspective view and schematic sectional drawing of the attachment state of the reinforcement cloth etc. to the inversion bulge part concerning one Embodiment of the attachment structure of the flexible joint to the concrete structure of this invention. It is a cross-sectional view of the attachment state of the reinforcement cloth etc. to the inversion swelling part concerning one Embodiment of the attachment structure of the flexible joint to the concrete structure of this invention. It is a cross-sectional view of the attachment state of the holding plate used also as the fixing member to the reverse bulging part concerning other embodiment of the attachment structure of the flexible joint to the concrete structure of this invention. It is a schematic perspective view of the suspension part concerning other embodiment of the attachment structure of the flexible joint to the concrete structure of this invention. It is the schematic perspective view and end view of a concrete structure to which the attachment structure of the flexible joint to the concrete structure of this invention is applied. It is a perspective view explaining the attachment structure of the flexible joint to the conventional concrete structure, respectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The flexible joint mounting structure 20 to the concrete structure is such that a water channel part 2 is formed at the bottom of an existing concrete structure 1 or 1 such as a water channel, a water reservoir, a water reservoir, etc. of a water supply facility. The flexible joint 30 for seismic reinforcement attached to the portion 3 must cross the water channel portion 2, and even in this case, the flexible joint 30 can be attached without the water channel being obstructed by the flexible joint 30. In the water channel portion 2, the mounting height of the flexible joint 30 is lower than the bottom height of the water channel portion 2.

  As such a flexible joint 30 for seismic reinforcement, one formed by an elastic member such as rubber, synthetic rubber, or synthetic resin is used. For example, as shown in FIG. An inner bulging portion 32 is formed by projecting upward at an intermediate portion of the flange portion 31, and the two convex plate portions 32 a are continuous in the width direction, and the trough portions are configured to have the same height as the both end flange portions 31. By reversing the two convex plate portions 32a so as to be pushed downward, the valley portion becomes the reverse convex plate portion 33a, and the two convex plate portions 32a become almost flat and the reverse bulge portion 33 is formed, and the cross-sectional shape is substantially inverted Ω-shape.

  On the other hand, in the flexible joint mounting structure 20 to the concrete structure (hereinafter simply referred to as the mounting structure 20), the water channel section 2 and the joint section 3 of the concrete structures 1 and 1 on both sides sandwiching the joint section 3. Each of the neighborhoods in the direction along the hanger is hung to form a hanger 21 deeper than the water channel 2 (see FIG. 2).

  This suspended portion 21 is a reverse bulging portion obtained by inverting a flange fixing portion 21 a for attaching both end flange portions 31 of the flexible joint 30 and a normal inner bulging portion 32 formed between the both end flange portions 31. It is comprised with the bulging part accommodating part 21b for accommodating 33. As shown in FIG. The flange fixing portion 21a has both end portions in the direction along the joints as inclined surfaces and smoothly continues to the space insides 1a and 1a of the concrete structures 1 and 1, and the water channel portion 2 with the flexible joint 30 attached. A reference plane A having a depth is determined so that the mounting height of the flexible joint 30 is lower than the bottom height. Further, the bulging portion accommodating portion 21b may be of a size that can accommodate the inverted bulging portion 33 of the flexible joint 30. For example, by making the cross-sectional shape V-shaped, the amount of lashing can be minimized. It is.

  In addition, when the water channel part 3 formed in the bottom part of the concrete structures 1 and 1 is near a corner part, as shown in FIG. 8, the corner part of the direction along the joint of the flange fixing | fixed part 21a of the hanging part 21 and What is necessary is just to make it continue smoothly with the space inner side of the concrete structures 1 and 1 by making only the edge part on the opposite side into an inclined surface.

  In this attachment structure 20, both end flange portions 31, 31 of the flexible joint 30 are arranged so as to straddle the joint portion 3 with respect to the joint portion 2 of the concrete structure 1, 1 other than the water channel portion 2 and the vicinity thereof. The fixing member 22 such as a metal plate is fixed to the concrete structures 1 and 1 through the anchor bolts and nuts 23 in the same manner as before so that the inner bulging portion 32 protrudes into the space inner sides 1 a and 1 a of the concrete structures 1 and 1. And in the channel part 2 and the vicinity of the hanging part 21 part, it reverse | inverts so that the inner side bulging part 32 of the flexible joint 30 may be pushed down, and the reverse bulging part 33 is formed, and the bulging part accommodating part 21b It should be stored inside (see FIG. 3).

  Then, in order to make the water channel part 2 continuous between the concrete structures 1, 1, a U-shaped presser plate 24 having an opening at the top is prepared so as to cover the inverted bulging part 33. It is possible to prevent inflow of fluid such as water into the inside (see FIGS. 3 and 4).

  Further, in this mounting structure 20, after covering the presser plate 24 from the both end flange portions 31 with the two reinforcing cloths 25, the synthetic resin plate 26 is placed, and the both end flange portions 31 are fixed to the fixing members 22 by anchor bolts / Fixing with the nut 23 completes the mounting of the flexible joint 30 (see FIGS. 4 to 6).

  The holding plate 24 is also used as a fixing member 22 for fixing the flanges 31 at both ends of the flexible joint 30 with anchor bolts and nuts 23. As shown in FIG. It is possible to project up to 33, and the number of members can be reduced, and the number of man-hours for attachment can also be reduced.

  According to such an attachment structure 20, the water channel portion 2 of the concrete structure 1, 1 and the vicinity thereof are suspended, and the attachment height of the flexible joint 30 is set to be higher than the outer height of the water channel portion 2 simply by forming the suspension portion 21. It can be attached low, the range of the crane can be greatly limited to the water channel portion 2 and the vicinity thereof, and construction can be performed with a shortened construction period.

  Further, by accommodating the inverted bulging portion 33 of the flexible joint 30 in the hanging portion 21, even if the flexible joint 30 crosses the water channel portion 2, the water flow is not obstructed, and the function of the water channel portion 2 can be achieved. It can be secured as it is and can be seismically strengthened.

  Furthermore, the inner bulging portion 32 of the flexible joint 30 can be made into two convex plate portions 32a, which can be reversed to the reverse side to form the reverse bulging portion 33 as one convex plate portion 33a. Further, the inverted bulging portion 33 can be formed in a state of being continuous with the inner bulging portion 32, and construction such as alignment with the water channel portion 2 is facilitated.

  Further, by forming the inverted bulging portion 33 in advance in the flexible joint 30 corresponding to the water channel portion 2, it is possible to perform the reversal process more easily and in a short time without the need for a reversing process.

DESCRIPTION OF SYMBOLS 1 Concrete structure 1a Empty surface inside 2 Water channel part 5 Joint part 20 Mounting structure of flexible joint to concrete structure 21 Hanging part 21a Flange fixing part 21b Swelling part accommodating part 22 Fixing member 23 Anchor bolt and nut 24 Presser plate 25 Reinforcement cloth 26 Synthetic resin board 30 Flexible joint 31 Both end flange part 32 Inner bulge part 32a Convex plate part 33 Reverse bulge part 33a Convex board part A Reference plane

Claims (5)

Attachment structure of a flexible joint to a concrete structure to which a flexible joint provided with flanges at both ends is mounted so as to straddle a joint portion where the ends of a concrete structure having a concave water channel portion formed at the bottom face each other Because
Forming a hanger that can accommodate the flexible joint in the water channel of the concrete structure and in the vicinity thereof,
The flexible joint is formed with an inner bulging portion projecting inside the space of the concrete structure between the flange portions corresponding to other than the water channel portion, and the both end flanges corresponding to the water channel portion and the vicinity thereof. Reversing the inner bulging part between the parts and continuously forming a reversing bulging part for a water channel part stored in the hanging part,
The flexible joint mounting structure to a concrete structure, characterized in that the flexible joint is configured to be mounted lower than the bottom of the water channel part in the water channel part.   In the flexible joint, the inner bulging portion is configured by continuously connecting two convex plate portions, and the inverted bulging portion is one reverse convex plate portion obtained by inverting the two convex plate portions. The structure for mounting a flexible joint to a concrete structure according to claim 1, wherein   The structure for attaching a flexible joint to a concrete structure according to claim 1 or 2, wherein a presser plate is applied to the inverted bulging portion of the flexible joint. 4. The structure for attaching a flexible joint to a concrete structure according to claim 3, wherein the presser plate is formed in a U-shape with an upper portion opened inside the water channel portion. 4. The concrete structure according to claim 3, wherein the presser plate is configured to serve also as two fixing members that are fixed to the anchors by contacting both end flange portions of the flexible joint. 5. Flexible joint mounting structure.

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