JP3025962U - Fixing structure of concrete floor slab - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a structure for fixing a concrete floor slab to a structure having a large displacement amount. SOLUTION: An anchor bar embedded in a substructure is inserted into a protective pipe embedded in a box removing part provided in a precast concrete floor slab extending over an opposing substructure, and a long hole is provided in a seat of the anchor bar. The rubber plate and the steel plate provided with the long holes are inserted in order from the bottom so that the direction of the long holes is different for each row, and the sliding member provided with the long holes is laid on the steel plate provided with the long holes, On it, arrange the steel plate provided with the insertion hole of the anchor bar, bind the anchor bar with a double nut, put the anchor cap on the double nut, and fill the anchor cap with the food-proof material, The precast concrete floor slab is filled with a room-temperature-curing soft material in a space between the box-extracting portion and a non-shrinkable mortar layer is formed on the room-temperature-curing soft material.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 Anchoring structure for laying concrete floor slab on substructure with large unspecified displacement.

[0002]

[Prior Art and Problems to be Solved by the Invention]

 The piers and inspection bridges used for the operation and maintenance of harbor facilities have traditionally been of cast-in-place concrete structures.

Therefore, for the purpose of labor saving on-site work, it is an object to propose a fixing structure that makes it possible to precast a jetty, an inspection bridge, etc. from a cast-in-place concrete.

[0004]

[Means for Solving the Problems]

 The anchor bar is a fixing structure for concrete floor slabs, and the anchor bar embedded in the substructure is inserted into the protective pipe embedded in the box extraction part provided in the precast concrete floor slab that straddles the opposing substructure, and the anchor bar seat Insert the rubber plate with the long holes and the steel plate with the long holes in order from the bottom so that the direction of the long holes is different for each row, and slide with the long holes on the steel plate with the long holes. Laying the material, arranging the steel plate with the insertion hole of the anchor bar on it, tightly connecting the anchor bar with a double nut, placing the anchor cap on the double nut, and protecting it inside the anchor cap. It is characterized in that it is filled with food materials, filled with a room temperature hardening soft material in a gap between the precast concrete floor slab and the box removing part, and a non-shrink mortar layer is applied on the room temperature hardening soft material. Concrete floor slab The fixing structure and spirit.

[0005]

[Embodiment of device]

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

FIG. 1 is a sectional view of a concrete floor slab fixing structure of the present invention. In the precast concrete floor slab 12, a protective tube 2a and a steel plate 2 for supporting the protective tube 2a are embedded in advance, and a box removing section 8 is provided.

An anchor bar 7 is embedded in the substructure 13, and the anchor bar 7 is inserted into the box removal part 8 and the protection tube 2 a provided in the precast concrete floor slab 12. Insert the rubber plate 1 with long holes into the anchor bar 7 on the steel plate 2 immediately at the seat of the box removing part 8 and further mount the steel plate 3 with long holes on which the sliding member 4 with long holes is placed. To do. A steel plate 5 having an anchor bar insertion hole formed on the sliding member 4 is used as a seat, and an anchor bar 7 is tightly connected with a double nut 6. The double nut 6 is covered with an anchor cap 9 filled with an anti-food material 9a, and the ambient temperature setting type soft material 10 is filled in the surroundings, and a non-shrink mortar 11 is applied on the upper layer of the temperature setting type soft material 10.

FIG. 3 is a diagram showing a configuration of a concrete floor slab fixing section located above the box removing section 8.

Next, the operation of the concrete floor slab fixing structure of the present invention will be described.

First, against the lifting pressure acting on the concrete floor slab 12, the rubber plate 1 sandwiched between the steel plate 2 and the long holed steel plate 3 acts as a cushioning material, and the lifting pressure is relaxed.

Further, the anchor bar 7 embedded in the substructure 13 is fixed with the double nut 6 at the box removing part 8 provided in the concrete floor slab 12, so that the concrete floor slab 12 is lifted up against the lifting pressure. Prevent. Here, the double nut is used to prevent loosening against lifting pressure.

FIG. 2 shows that by arranging the elongated holes alternately for each row, the steel plate 5 slides on the sliding member 4 with elongated holes corresponding to the displacement amount, and the left and right, front and rear 2 It is the figure which showed the place which absorbs the displacement of the direction.

Since the double nut 6 is embedded in the food material 9a, there is no risk of corrosion, and even if the floor slab is damaged, it can be detached. Further, since there is the room temperature-curable soft material 10 filled around the anchor cap 9, it is possible to flexibly cope with lateral, forward and backward displacement.

The non-shrink mortar 11 applied to the upper layer portion of the room temperature-curable soft material 10 serves to protect the room temperature-curable soft material 10.

[0015]

[Effect of device]

 The effects of the present invention are as follows.

(B) The lifting force acting on the concrete slab is relaxed by the substructure. (B) The concrete floor slab can be easily secured to the structure that has a large amount of displacement in two directions, left and right and front and back, and the safety of the concrete floor slab can be secured.

(C) A precast concrete floor slab can be used, and construction is simple and economical, unlike the case of cast-in-place concrete, where construction is not affected by the weather.

(D) Even if the concrete slab is damaged, it can be easily removed and repaired and replaced easily.

[Brief description of drawings]

FIG. 1 is a sectional view of a concrete floor slab fixing structure of the present invention.

[FIG. 2] By alternately arranging the long holes for each row and arranging them alternately, the steel plate slides on the sliding member with long holes corresponding to the displacement amount, and absorbs the displacement in the left, right, front and rear directions. It is the figure which showed the place.

FIG. 3 is a diagram showing a configuration of a concrete floor slab fixing unit located above a box removing unit.

[Explanation of symbols]

1 ... Long-hole rubber plate, 2 ... Steel plate, 2a ... Protective pipe, 3 ... Long-hole steel plate, 4 ... Long-hole sliding material, 5 ...
… Steel plate, 6 …… Double nut, 7 …… Anchor bar, 8
...... Unboxing part, 9 ...... Anchor cap, 9a …… Preventive material, 10 …… Cold-setting soft material, 11 …… No shrinkage mortar, 12 …… Precast concrete floor slab, 13 ……
Substructure

Claims (1)

[Scope of utility model registration request] 1. A fixing structure for a concrete floor slab, wherein an anchor bar embedded in a substructure is inserted into a protective pipe embedded in a box removal part provided in a precast concrete floor slab straddling an opposing substructure, Insert the rubber plate with the long hole and the steel plate with the long hole in the seat of the anchor bar in order from the bottom so that the direction of the long hole is different for each row, and insert the long plate on the steel plate with the long hole. Laying a sliding material provided with a hole, arranging a steel plate provided with an insertion hole for an anchor bar on it, tightly connecting the anchor bar with a double nut, placing an anchor cap on the double nut, An anchor cap is filled with an anti-food material, a space between the precast concrete floor slab and the box removal part is filled with a room temperature curing soft material, and a layer of non-shrink mortar is applied on the room temperature curing soft material. Concree featuring The fixed structure of the floor slab.