JP2511379Y2 - Precast rebar concrete wall balustrade mounting structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall balustrade mounting structure. More specifically, it is a precast reinforced concrete wall balustrade previously manufactured in a factory or the like on a floor plate on which anchor means such as anchor bolts are arranged. It is related to the structure for mounting.

[0002]

2. Description of the Related Art Conventionally, in a structure such as a bridge, a precast reinforced concrete wall balustrade is integrally attached to a floor plate provided with anchor means such as anchor bolts to ensure safety of vehicles passing through the floor plate. It is configured to be able to.

By the way, as a mounting structure of a floor board and a precast reinforced concrete wall balustrade in such a structure as a bridge, for example, an anchor bolt 3 preliminarily embedded in the floor board 1 is integrated with a wall balustrade 5. The structure in which the anchor frame 7 that has been manufactured specially is attached and fixed by the bolt 9 (see FIG. 3)
PC steel rod 11 arranged in the
A structure (see FIG. 4) or the like is employed in which the bolt 9 is tightened and then fixed and integrated.

[0004]

[Problems to be Solved by the Invention] However, in the former structure in which the anchor bolt and the anchor frame are combined,
When the number of anchors is increased to reduce the size of the member, the load can be dispersed, but the positions of the anchor bolt and the anchor frame are often out of alignment, and the work is often complicated. Therefore, recently, the number of anchors tends to decrease, but if the number of anchors is reduced like this,
There is a problem that the economical efficiency deteriorates because not only the anchor bolt and the bolt become large in size, but also the anchor frame and the reinforcement around this frame are required because the stress acting on the place becomes large.

On the other hand, the latter applies tension to the PC steel rod and integrates the floorboard and the wall balustrade, so that not only special tension work is required, but also misalignment between the PC steel rod and its insertion hole is prevented. In order to do so, it is necessary not only to devise such as setting the length of the wall balustrade to about 2 m, but also the installation work is complicated and requires a long time.

[0006]

[Means for Solving the Problems] Therefore, in this invention,
In the structure where the precast reinforced concrete wall balustrade is attached to the floor plate on which the anchor means is arranged, the bottom surface is open at the bottom of the wall balustrade, for example, forming a void portion set to a pull-out resistance shape such as a taper shape Anchor bolts are projected, and anchor means such as anchor bolts projecting from the floor plate are housed in the void portion of the wall balustrade, and the void portion is filled with non-shrinkable mortar to integrate the floor plate and the wall balustrade. By adopting a structure that
It is intended to facilitate the work of attaching the floor plate and the high fence of the wall and obtain sufficient attachment strength.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In a wall balustrade mounting structure according to the present invention, anchors such as anchor bolts protruding from the cavity and anchor bolts protruding from the floor plate by hardening of non-shrinkable mortar filled in the cavity. The means is fixed and held to integrate the wall balustrade and the floor board.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a precast reinforced concrete wall balustrade mounting structure according to the present invention will now be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, a wall balustrade mounting structure according to the present invention is a wall balustrade 20 made of precast reinforced concrete.
The bottom portion 22 of the above is formed with a void 24 having a predetermined shape, and an anchor bolt 34 on the wall balustrade main body 20a side is projected in the void 24 so that the floor 24
6 is accommodated in the anchor means 28 embedded therein, and the space 24 is filled with non-shrinkable high-strength mortar 30 and hardened, whereby the floor board 26 and the wall balustrade 20.
It is configured to integrate and.

In this case, the void portion 24 formed in the bottom portion 22 of the precast reinforced concrete wall balustrade 20 has a cross-sectional shape that serves as pull-out resistance by embedding a winding pipe 32 having a diameter of about 280 to 300 mm, for example. A spiral streak 36 is wound around the anchor bolt 34 while the shape is set.

In the present embodiment, the winding pipe 32 is provided so that the cross-sectional shape of the void portion 24 serves as pull-out resistance.
However, embedding of the winding pipe can be omitted if the cross-sectional shape of the void 24 is inversely tapered.

At the four corners of the bottom 22 of the precast reinforced concrete wall balustrade 20, positioning bolts 38, which are used to set a clearance when the wall balustrade 20 is installed on the floor plate 26, are provided in a protruding manner.

On the other hand, in the anchor means 28 embedded in the floor plate 26, the spiral streaks 36 are wound around the anchor bolts 40, 40 arranged at a predetermined distance from each other, and a pressure plate is provided between the anchor bolts 40, 40. Four
It is configured by connecting via 2, but the wall balustrade 20
When the anchor means 28 is housed in the void portion 24, it is arranged at a position that is offset by approximately 90 degrees from the position of the anchor bolt 34 that projects from the balustrade body 20a side.

Next, the procedure of the work of attaching the precast reinforced concrete wall balustrade 20 to the floor plate 26 to integrate them will be explained. First, the anchor means 28 of the floor plate 26 is housed in the void portion 24 at the bottom of the wall balustrade 20. The wall balustrade 20 is installed at a predetermined position on the floor plate 26. At this time, the blind bolt 44 is attached to the positioning bolt 38 at the bottom of the wall balustrade 20.
The floor surface 26 of the floor plate 26
It is set so that a gap of, for example, about 30 mm is formed between and the bottom surface of the wall balustrade 20.

Next, the reference plane B of the floor plate 26 and the wall balustrade 20.
The outside of the gap with the bottom surface is closed using an appropriate closing means such as an adhesive tape, and a part of the gap is closed, and this gap is formed by a mortar injection hose inserted into the gap 24 of the wall balustrade 20 through the opening of the gap. No shrinkage high strength mortar in 24
Is filled and cured, and the blocking means may be removed after the mortar is cured.

[0016]

As described above, according to the mounting structure of the precast reinforced concrete wall balustrade according to the present invention, the anchor means protruding from the floor plate and the void portion at the bottom of the balustrade can be easily aligned (hole matching). Therefore, even if the anchor pitch is made small, it is possible to sufficiently cope with a long wall railing, and the integration work can be performed very easily.

Further, since the floor board and the wall balustrade are integrated by the non-shrinkable high-strength mortar filled in the voids, stress is not concentrated only on some anchor bolts, so that the anchor means can be miniaturized. Therefore, it is not necessary to reinforce the wooden anchor frame and the surroundings of the fixing part as in the past, and special work such as PC work can be omitted, so the installation work is easy and the floor board and wall with sufficient strength are also available. It has various advantages such as a mounting structure with a balustrade, and its practical effect is extremely large.

The preferred embodiment of the wall balustrade mounting structure according to the present invention has been described above. However, the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention. Of course, it can be modified.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing a preferred embodiment of a precast reinforced concrete wall balustrade mounting structure according to the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of the precast reinforced concrete wall balustrade mounting structure shown in FIG.

FIG. 3 is a sectional explanatory view showing a conventional mounting structure of a precast reinforced concrete wall balustrade.

FIG. 4 is a cross-sectional explanatory view showing another conventional mounting structure for a precast reinforced concrete wall balustrade.

[Explanation of symbols]

20 wall balustrade, 22 bottom part, 24 void part, 26 floor plate, 28 anchor means, 30
Mortar, 32 winding pipes, 34 anchor bolts, 36 spiral streaks, 38 positioning bolts, 40 anchor bolts, 42 bearing plates,
44 Blind nut,

Claims (1)

(57) [Scope of utility model registration request] 1. A structure for mounting a precast reinforced concrete wall balustrade on a floorboard provided with anchor means, wherein a void having a predetermined shape with an open bottom is formed at the bottom of the wall balustrade, and an anchor bolt is projected into this void. An anchor means such as an anchor bolt protruding from the floor plate is housed in the void portion of the wall balustrade, and the floor plate and the wall balustrade are integrated by filling non-shrinkable mortar into the void portion. Precast reinforced concrete wall balustrade mounting structure.