JP6212606B1 - Construction method of water stop structure with joint of concrete and water stop plate fixture used therefor - Google Patents

Abstract

The conventional technology does not have a simple and effective technique for directly assembling the water stop plate and the joint plate, and the present invention provides a concrete material that can be assembled and fixed on the site in a simple and reliable manner. It is an object of the present invention to provide a method for constructing a jointed water stop structure and a water stop plate fixture used therefor. SOLUTION: Using a water-stop plate fixture that is obtained by cutting a short rectangular tube and dividing and forming an unequal side mountain-type member and an unequal side groove-type member, two non-equal side groove-type members are formed on the foundation ground. A joint plate is sandwiched between the standing and fixed gaps, and a water stop plate is placed on top of the joint plate. Two unequal mountain-shaped members are placed on the water stop plate, above the unequal groove type member. It is arranged symmetrically with a gap at a position corresponding to the horizontal wall portion of the wall, sandwiching the water stop plate between the unequal side mountain type member and the unequal side groove type member, and between the two unequal side mountain type members According to the construction method of the water stop structure with concrete joints, in which a three-dimensional structure of the joint plate and the water stop plate is assembled by sandwiching and fixing the second step joint plate in the gap. [Selection] Figure 1

Description

  The present invention relates to a method for constructing a jointed water stop structure of cast-in-place concrete, and a water stop plate fixture used therefor.

  Concrete is used in various structures such as civil engineering structures such as dams, tunnels and bridges, and architectural structures such as apartment houses and office buildings. Some of these concrete structures are pre-fabricated in factories, etc. In some cases, civil engineering structures and building structures are constructed by placing concrete directly in the specified place. A concrete mortar (ready-mixed concrete) in which water and aggregates are kneaded is placed in a formwork, and after waiting for the concrete effect, the concrete structure is constructed.

And the water stop board and the joint board which has a stretching property are attached to the joint part of the concrete placement location, and the flooding from the joint part resulting from expansion and contraction of concrete is prevented.
As this waterproofing plate and its construction method, JP-A-10-159060 discloses:
[[Claim 1] In a waterstop plate formed in a strip shape and interposed in a joint of concrete, a joint plate holding portion in which a concave portion is integrally formed in the longitudinal direction at the center portion of both side surfaces thereof, and the joint plate An engaging portion formed on the holding portion and an auxiliary member that is detachably provided on the engaging portion and holds the joint plate having a thickness different from that of the joint plate held by the joint plate holding portion. A water stop plate characterized by
[Claim 2] The auxiliary member has a concave portion for holding the joint plate in the longitudinal direction, and an engaged portion that engages with the engaging portion of the joint plate holding portion is provided on both sides of the concave portion. The water stop plate according to claim 1.
[Claim 3] In a construction method in which a joint plate and a water stop plate are attached to a concrete joint of a water channel having a concrete wall surface, a concave portion is integrally formed in the longitudinal direction at the center of both side surfaces of the water stop plate. A joint plate holding portion is provided, and a joint plate fixing member for holding the joint plate is attached to the formwork mounting portions on both sides of the concrete wall, and the joint plate is respectively provided between the joint plate holding portion and the joint plate fixing member. And holding the joint plate and the water stop plate by the joint plate fixing member between the molds, and at the same time or in the space between the molds where both edge portions of the water stop plate are located across the joint plate Construction method of water stop plate that continuously pours concrete. ]
The joint plate and the water stop plate are held by the joint plate holding portion provided on the water stop plate.

In addition, JP-A-2006-11554 discloses "[Claim 1] a joint material interposed between the butt surfaces of concrete members, and a joint plate having stretchability that is laid horizontally between the concrete members; A joint structure comprising a water stop plate, wherein one end portion of the water stop plate is fixed to a reinforcing bar of one of the concrete members via an attachment member, and the other end portion of the water stop plate Is fixed to the reinforcing bar of the other concrete member via an attachment member.
[Claim 2] The joint material is sandwiched between a pair of pressing members, one of the pressing members is fixed to a reinforcing bar of one of the concrete members, and the other pressing member is The joint structure according to claim 1, wherein the joint structure is fixed to a reinforcing bar of a concrete member.
[Claim 3] The joint structure according to claim 2, wherein the mounting member includes the pressing member.
[Claim 4] A step of arranging a reinforcing bar of a pair of concrete members facing each other with a joint part interposed therebetween, a step of fixing a joint material to the reinforcing bar using a pressing member fixed to the reinforcing bar, and the reinforcing bar And a step of fixing a water stop plate to the reinforcing bar using an attachment member fixed to the reinforcing bar, a step of installing a mold, and a step of placing concrete in the mold. Construction method for concrete structures. ]
Is disclosed.

JP-A-10-159060 Japanese Patent Application Laid-Open No. 2006-11554

The invention of Patent Document 1 in the above peripheral technology has a joint plate holding portion in which concave portions are formed in the longitudinal direction integrally with the center portions of both side surfaces of the water stop plate, and provided in the joint plate holding portion and the mold. A construction method in which the joint plate is held between the joint plate holding members, and concrete is placed on both sides of the joint plate, and the water stop plate and the joint plate are only engaged with the joint plate holding portion and are strong. Not in a state of being bound to
Moreover, in the invention of Patent Document 2, the water stop plate is coupled to the joint plate pressed and held from both sides via the reinforcing bars, but many members are required to form the form, and it takes time and labor to assemble. There is a problem that it costs money.
Therefore, the conventional technique does not have a simple and effective technique for directly assembling the water stop plate and the joint plate, and the present invention provides a concrete joint that can be assembled and fixed on the site in a simple and reliable manner. It is an object of the present invention to provide a construction method for a water stop structure and a water stop plate fixture used therefor.

The present inventor has solved the above problems by the following means.
(1) A place where construction is carried out using two types of water stop plate fixtures formed by cutting a short rectangular tube vertically and dividing it into an inverted L-shaped member and a U-shaped member. A method for constructing a water-stopping structure with joints in cast concrete,
The inverted L-shaped member is an unequal mountain-shaped member in which the length of the upper horizontal wall portion is shorter than the length of the vertical vertical wall portion, and the U-shaped member is the length of the upper horizontal wall portion. An unequal groove type member whose length is shorter than the length of the lower horizontal wall,
As a first step, the two unequal groove-type members are erected and fixed symmetrically with a gap in the foundation ground, and a stretchable joint plate is sandwiched in the gap.
As a second step, a water stop plate is placed horizontally on the upper surface of the horizontal wall portion above the unequal groove type member,
As a third step, the horizontal wall portions of the two unequal side mountain-shaped members on the waterstop plate are symmetrical with a gap in a position corresponding to the horizontal wall portion above the unequal side groove-type member. After the disposition, the water stop plate is fixed between the horizontal wall portion of the unequal side mountain-shaped member and the horizontal wall portion above the unequal side groove-type member, and between the two unequal side mountain-shaped members. The second stage joint plate is sandwiched and fixed in the gap between the joint plate and the three-dimensional structure of the joint plate and the water stop plate.
As a fourth step, concrete mortar (ready-mixed concrete) is placed on the outer periphery of the assembled three-dimensional structure of the joint plate and water stop plate. .
(2) In the place where the joint plate is juxtaposed laterally, the water stop plate fixture is disposed and fixed so as to straddle both joint plates. Construction method for water-stop structures with joints.

(3) A waterstop fixing device used in the construction method of the jointed waterstop structure according to (1) or (2),
It consists of an inverted L-shaped member and a U-shaped member obtained by vertically cutting a short rectangular tube, and the inverted L-shaped member has the length of the upper horizontal wall portion. An unequal crest-shaped member that is shorter than the length of the vertical vertical wall, and the U-shaped member of the cross section is an unequal groove-shaped member in which the length of the upper horizontal wall is shorter than the length of the lower horizontal wall. And the water stop board fixing tool which consists of two sets of the combination of the said unequal side mountain type member and an unequal side groove type member.
(4) The water stop plate according to (3), wherein the length of the horizontal wall portion of the unequal side mountain-shaped member is equal to the length of the upper surface horizontal wall portion of the unequal side groove-type member. Fixture.
(5) The waterstop fixing device according to (3) or (4), wherein the unequal side mountain type member and the unequal side groove type member are made of a rust-proof metal.

The following effects are demonstrated by the construction method of the jointed water stop structure of the present invention and the water stop plate fixture used therefor.
<1> A place where a short rectangular tube is cut vertically, and is constructed using two types of water stop plate fixtures formed by dividing the section into an inverted L-shaped member and a U-shaped member. A method for constructing a water-stopping structure with joints in cast concrete,
The inverted L-shaped member is an unequal mountain-shaped member in which the length of the upper horizontal wall portion is shorter than the length of the vertical vertical wall portion, and the U-shaped member is the length of the upper horizontal wall portion. An unequal groove type member whose length is shorter than the length of the lower horizontal wall,
As a first step, the two unequal groove-type members are erected and fixed symmetrically with a gap in the foundation ground, and a stretchable joint plate is sandwiched in the gap.
As a second step, a water stop plate is placed horizontally on the upper surface of the horizontal wall portion above the unequal groove type member,
As a third step, the horizontal wall portions of the two unequal side mountain-shaped members on the waterstop plate are symmetrical with a gap in a position corresponding to the horizontal wall portion above the unequal side groove-type member. After the disposition, the water stop plate is fixed between the horizontal wall portion of the unequal side mountain-shaped member and the horizontal wall portion above the unequal side groove-type member, and between the two unequal side mountain-shaped members. The second stage joint plate is sandwiched and fixed in the gap between the joint plate and the three-dimensional structure of the joint plate and the water stop plate.
As concrete mortar (ready mixed concrete) is placed on the outer periphery of the three-dimensional structure of the jointed joint plate and waterstop plate as the fourth step,
Assembling and fixing of the joint plate and the water stop plate can be performed very easily, and field work can be easily performed in a short time.
<2> In the place where the joint plate is juxtaposed to the side, the waterproof plate fixing tool is disposed and fixed so as to straddle both joint plates. In addition to the effect of <1>, The number of plate fixtures used is reduced, and construction costs can be reduced.

<3> A water stop plate fixture used in the construction method of the water stop structure with joints according to (3) of the problem solving means,
It consists of an inverted L-shaped member and a U-shaped member obtained by vertically cutting a short rectangular tube, and the inverted L-shaped member has the length of the upper horizontal wall portion. An unequal crest-shaped member that is shorter than the length of the vertical vertical wall, and the U-shaped member of the cross section is an unequal groove-shaped member in which the length of the upper horizontal wall is shorter than the length of the lower horizontal wall. And because it is composed of two sets of combinations of the unequal side mountain type member and the unequal side groove type member,
The square tube of the raw material can be used effectively without leaving, and it can be manufactured by a simple operation of simply cutting two places.
<4> Since the length of the horizontal wall portion of the unequal side mountain-shaped member is equal to the length of the upper surface horizontal wall portion of the unequal side groove-shaped member,
When placing and fixing between the top and bottom of the water stop plate, the unequal side mountain type member can be easily placed and fixed directly above the unequal side groove type member previously fixed to the foundation ground. .
<5> Since the unequal side crest-type member and the unequal side groove-type member are made of a rust-proof metal, the joint plate and the joint plate are not corroded by corrosion due to water cracking of concrete after construction. A strong bond with the water plate is ensured.

Structure explanatory drawing of the water stop structure with joints of concrete of the present invention The perspective view of one Example of the water stop structure with the joint of the concrete of this invention The perspective view of the other Example of the water stop structure with the joint of the concrete of this invention Explanatory drawing of the method for manufacturing the waterstop fixing device of the present invention

Embodiments of the present invention will be described with reference to the drawings of the examples.
FIG. 1 is a structural explanatory view of a jointed water-stopping structure according to the present invention, FIG. 2 is a perspective view of an embodiment of the jointed water-stopping structure of the concrete according to the present invention, and FIG. 3 is a joint of the concrete according to the present invention. FIG. 4 is a perspective view of another embodiment of the water stop structure with attachment, and FIG. 4 is an explanatory view of a method for manufacturing the water stop plate fixture of the present invention.
In the figure, 1 is an unequal groove-shaped member, 2 is an unequal mountain-shaped member, 3 is a stretchable joint plate, 4 is a water stop plate, 5 is a long set screw, 6 is a screw, 7 is concrete mortar (ready mixed concrete) ), 8 is a connection reinforcing plate, 10 is a foundation ground, 20 is a short rectangular tube, and C1 and C2 are cut portions of the short rectangular tube 20.

First, the water stop plate fixture used in the construction method of the jointed water stop structure of the present invention will be described.
As shown in FIG. 4, the water stop plate fixture has an inverted L-shaped member and a U-shaped cross-section member, which are manufactured by dividing a short rectangular tube 20 by cutting it vertically at cutting points C1 and C2. Two types of members are paired, and the cross-section inverted L-shaped member is an unequal mountain-shaped member 2 in which the length of the upper horizontal wall portion is shorter than the length of the vertical vertical wall portion. The U-shaped member is formed in an unequal groove-type member 1 in which the length of the upper horizontal wall portion is shorter than the length of the lower horizontal wall portion.
And the water stop structure with a joint of concrete shown in FIG. 1 constructed using this water stop plate fixture is constructed by the steps shown below. That is,
a. First, two unequal groove-type members 1 are erected in plane symmetry with a gap between them on the foundation ground 10, and the horizontal wall portion on the long side of the foundation ground 10 is elongated by a long set screw 5. After being fixed to the foundation ground 10, the stretchable joint plate 2 having a height equal to the height of the vertical wall portion of the unequal groove type member 1 is sandwiched in the gap, and the two unequal groove types are inserted. A screw 6 reaching from the one vertical wall portion of the member 1 to the other vertical wall portion is screwed and fixed (first step),
b. Next, the water stop plate 4 is placed horizontally on the upper surface of the horizontal wall portion above the unequal groove-type member 1 (second step),
c. Thereafter, the horizontal wall portions of the two unequal mountain-shaped members 2 on the waterstop plate 4 are symmetrical with respect to the horizontal wall portion above the unequal groove-shaped member 1 with a gap. After the disposition, the horizontal wall portion of the unequal mountain-shaped member 2 and the horizontal wall portion above the unequal groove-shaped member 1 are fixed by screwing in a state in which the waterstop plate 4 is sandwiched therebetween, and the 2 Screws 6 reaching the other vertical wall portion from one vertical wall portion in the same manner as in the first step by sandwiching the second-stage joint plate 3 in the gap between the unequal mountain-shaped members 2. To fix the three-dimensional structure of the joint plate 3 and the water stop plate 4 (third step),
d. And concrete mortar (ready mixed concrete) 7 is laid in the outer peripheral part of the three-dimensional structure of the assembled joint plate 3 and waterstop plate 4 (fourth step),
Thus, the concrete jointed water stop structure of the present invention is completed.

The perspective view shown in FIG. 2 is an embodiment of a concrete jointed water stop structure completed through the above-described steps, and the water stop plate fixing is performed at the place where the joint plates 3 are juxtaposed sideways. It is shown that the tool is disposed and fixed so as to straddle the joint portion of the two joint plates 3, and the vertical wall portion serves to join the two joint plates 3 together.
Further, the perspective view shown in FIG. 3 shows an embodiment in which a connection reinforcing plate 8 is separately provided to more firmly connect the two joint plates 3 disposed adjacent to each other in the horizontal direction.

When the water blocking plate fixture is formed by cutting the short rectangular tube 20 vertically, the cutting point C1 shown in FIG. 4 is selected as the midpoint of the upper side, and the horizontal wall portion of the unequal mountain-shaped member 2 is selected. The length and the length of the upper surface horizontal wall portion of the unequal groove-type member 1 are formed to be equal to each other. It is preferable that the horizontal wall is easily disposed and fixed at a position corresponding to the horizontal wall above the unequal groove-type member 1.
Further, the unequal side mountain-shaped member 2 and the unequal side groove-type member 1 are made of a rust-prevented metal, so that the joint plate 2 and the joint plate 2 are not corroded by water immersion due to concrete cracks after construction. This is preferable because a strong bond with the water stop plate 3 is secured.

1: Unequal side groove-shaped member 2: Unequal side mountain-shaped member 3: Stretchable joint plate 4: Water stop plate 5: Long set screw 6: Screw 7: Concrete mortar (ready mixed concrete)
8: Connection reinforcing plate 10: Foundation ground 20: Short rectangular tube C1, C2: Cut location

Claims (5)

A cast-in-place concrete that is constructed using two types of water-stop plate fixtures that are formed by cutting a short rectangular tube vertically and dividing it into an inverted L-shaped member and a U-shaped member. It is a construction method of a waterproof structure with joints,
The member having an inverted L-shaped cross section is an unequal mountain-shaped member (2) in which the length of the upper horizontal wall portion is shorter than the length of the vertical vertical wall portion, and the U-shaped member is an upper horizontal wall. And an unequal groove type member (1) in which the length of the portion is shorter than the length of the horizontal wall portion below,
As a first step, the two unequal groove-type members (1) are erected and fixed in plane symmetry with a gap between the foundation ground (10), and an elastic joint plate (3) is sandwiched between the gaps. Dress
As a second step, the water stop plate (4) is horizontally placed on the upper surface of the horizontal wall portion above the unequal groove-type member (1),
As a third step, the horizontal wall portions of the two unequal side mountain-shaped members (2) on the waterstop plate (4) correspond to the horizontal wall portion above the unequal side groove-shaped member (1). After arranging the plane symmetrically with a gap at the position, the water stop plate is sandwiched between the horizontal wall portion of the unequal mountain-shaped member (2) and the horizontal wall portion above the unequal groove-shaped member (1). Fixed in a state, and a second-stage joint plate (3) is sandwiched and fixed in the gap between the two unequal mountain-shaped members (2), and the joint plate (3) and the water stop plate (4) Assembling the three-dimensional structure
As a fourth step, concrete mortars with concrete joints are placed by placing concrete mortar (ready mixed concrete) on the outer periphery of the three-dimensional structure of the jointed joint plate (3) and waterstop plate (4). Construction method of water structure.   In the location where the said joint board (3) is juxtaposed to the side, the said water stop board fixing tool is arrange | positioned and fixed so that it may straddle both joint boards (3), It is characterized by the above-mentioned. The construction method of the water stop structure with the joint of the description concrete. A water stop plate fixture used in the construction method of the jointed water stop structure according to claim 1 or 2,
It consists of an inverted L-shaped member and a U-shaped member obtained by vertically cutting a short rectangular tube, and the inverted L-shaped member has the length of the upper horizontal wall portion. An unequal side mountain-shaped member (2) that is shorter than the length of the vertical vertical wall, and the U-shaped member is an unequal side whose upper horizontal wall is shorter than the lower horizontal wall. A waterstop fixing device comprising two sets of groove-type members (1) and a combination of the unequal side mountain-type member (2) and the unequal side groove-type member (1).   The length of the horizontal wall part of the said unequal side mountain type member (2) and the length of the upper surface horizontal wall part of an unequal side groove type member (1) are formed equally, The Claim 3 characterized by the above-mentioned. Stop plate fixing tool. 5. The waterstop fixing device according to claim 3, wherein the unequal side mountain type member (2) and the unequal side groove type member (1) are made of a rust-proof metal.

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