JPH036282B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for installing an expansion joint device that expandably connects connecting portions of elevated roads and river bridges.

[Prior Art] In conventional expansion joints, when the amount of expansion and contraction of the floor slab is small and the gap is narrow, as shown in FIG. A reinforcing bar 86 extending from the expansion joint 85 is placed on the expansion joint 85.
A method has been implemented in which the concrete portion 87 is constructed by welding and joining the concrete to reinforcing bars 92 extending from the floor slab, and pouring concrete so that the styrofoam 80 forms a boundary. According to this method, concrete can be placed without using formwork. However, if the play space is large, there is a possibility that the Styrofoam 80 will break and fall if the play space becomes narrow in the summer after installing an expansion joint, or that the Styrofoam 80 may fall as it is as the play space widens in the winter. This makes it impossible to put it into practical use.

[Problems to be Solved by the Invention] The present invention solves the above problems, and there is no part where the expansion joint device is installed that can be damaged or fallen later, and there is no gap between the parts when pouring concrete. To provide a method for installing an expansion joint device that eliminates the need for a formwork in the part and further prevents sound transmitted from the play area.

[Means for Solving the Problems] The present invention provides a method for installing an expansion joint device having a main body portion that is expandable and contractible in the horizontal direction and a soundproofing member made of an expandable material such as sponge at the lower part of the main body portion, a step of inserting the lower part of the soundproofing member into the gap between the floor slabs; and a step of pouring concrete above the floorboards with the main body portion being bonded and fixed to at least the soundproofing member with the soundproofing member as a boundary. A method for installing an expansion joint device is provided.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In one embodiment of the invention shown in FIG.
0 is the main body of an expansion joint device that extends along the connecting part of a bridge, etc. It has a structure almost similar to a normal expansion joint, and the side and bottom surfaces on both sides are made of steel plates 1 and 1.
2, and can be expanded and contracted by deforming the parts 14 on both sides of the rubber part 13 as shown.
A groove 15 is formed upward from the center of the bottom of the rubber part 13, and a sponge 16 is embedded therein for soundproofing. A pair of grooves 17 are formed on both sides of the rubber part 13, and a steel plate 18 is embedded in the center part.

20 is a nut fixed to the steel plate 12, and 21 is a reinforcing bar that is screwed onto this nut and fixed with a nut 22.

Reference numeral 25 denotes a soundproofing member that is fixed along the center of the bottom of the main body portion 10 and extends downward, and has rubber portions 26 on both sides.
The sponge part 2 is covered with
7 and is expandable and retractable, and the lower part is shown compressed and inserted between the floor slabs 90. 28 penetrates the iron plate 30 to form the main body 1
The soundproofing member 25 is screwed onto both sides of the bottom of the main body part 1.
This is a bolt that connects and fixes to 0.

Normally, the reinforcing bars 21 and the soundproofing member 25 are transported without being attached, and then assembled and used at the location where installation work is to be performed.

When installing the structure as described above, as shown in FIG.
The reinforcing bars 21 are inserted into the gaps 91 between 0 and welded to the reinforcing bars 92 coming out from the floor slab 90. In this state, concrete is poured to form the concrete portion 35. In this case, the soundproofing member 25 acts as a formwork in the center, and construction work can be carried out without concrete leaking into the clearance space 91. Even if the gap between the spaces 91 changes later due to the expansion and contraction of the floor slab 90, the soundproofing member 25
has become able to expand and contract to adapt.

In the present invention, the main body 10 may be different from that illustrated and described, and various changes may be made, such as the bottom and side surfaces being made of rubber instead of steel plates. Further, the soundproofing member 25 may have a structure different from that illustrated and described as long as it is expandable and contractible as a whole.

[Effects of the Invention] As described above, the present invention connects the lower part of the soundproofing member 25 made of an expandable material to the gap 91 between the floor slabs 90.
The soundproofing member 25 is inserted into the main body 10 using bolts 28 or the like to prevent it from falling, and concrete is poured on the upper side of the floor slab 90 with the soundproofing member 25 as a boundary. 25 will not be damaged or fall, no formwork is required in the gap 91 during concrete pouring, and sound transmitted from the gap 91 can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing an installed state of an expansion joint device according to an embodiment of the present invention, and FIG. 2 is a vertical sectional view showing an installed state of an example of a conventional expansion joint. DESCRIPTION OF SYMBOLS 10...Main part, 12...Steel plate, 25...Soundproofing member, 26...Rubber part, 27...Sponge part, 2
8... Bolt, 30... Steel plate, 90... Floor slab, 9
1... Yuma.

Claims (1)

[Claims] 1. A method for installing an expansion joint device having a horizontally expandable main body and a soundproofing member made of an expandable material such as sponge at the bottom of the main body,
a step of inserting the lower part of the soundproofing member into the gap between the floor slabs; and a step of pouring concrete above the floorboards with the main body portion being bonded and fixed to at least the soundproofing member with the soundproofing member as a boundary. A method for installing an expansion joint device, comprising: