JPH06306818A - Wall balustrade and installing construction method thereof - Google Patents

Abstract

PURPOSE:To eliminate difficult work to lower an object while applying bolt inserting holes of a wall balustrade accurately to plural anchor bolts buried beforehand in a floor board, difficult hole fitting Work to, insert a fastening bolt in upper and lower holes communicating between the wall balustrade and the floor board or fastening bolt inserting fastening work involving a danger in order to install the wall balustrade. CONSTITUTION:In a wall balustrade 2 erected on/fixed to a floor board 1 of a road bridge or the like, a fastening bolt inserting hole 3 is arranged obliquely almost in the vertical erecting direction of the wall balustrade. The wall balustrade is connected through an anchor bolt 6 and a coupler 7 where a fastening connecting bolt 5 is buried in the floor board 1. The anchor bolt 6 on the floor board 1 side becomes stronger than the fastening connecting bolt 5 on the wall balustrade side. The coupler 7 screw-fitted to the tip side of the anchor bolt 6 buried in the floor board 1 is arranged in a condition of opening upward from the floor board 1, and the wall balustrade 2 is fixed by the fastening connecting bolt 5 inserted in the bolt inserting hole 2a side of the wall balustrade 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall balustrade installed on a road bridge or the like and a method of installing the same.

[0002]

2. Description of the Related Art An example of a conventional structure for connecting a precast wall balustrade to a floor slab of a road bridge or the like is shown in FIGS. (a) is a structure in which the base side of the anchor bolt 16 is embedded in the floor slab 1 in an upright state, and the anchor bolt 16 is fixed by lowering it from above while addressing the bolt insertion hole 12a of the wall balustrade 12. Is. The anchor bolts 16 are connected by a coupler along the way, which is for adjusting the bolt length to the height of the wall balustrade 12 before being embedded in the floor slab 1. Therefore, the wall balustrade 12
When tightening, the anchor bolt 16 is the same as the one having a predetermined length.

In the conventional structure example (b), the wall balustrade 12 is connected to the floor slab 1 by anchor bolts 16 and 17 of a predetermined length provided with a bifurcated retainer at the base. Further, in (c), two long and short fastening bolts 18 and 19 are inserted into the bolt holes 12a and 1a penetrating between the wall balustrade 12 and the floor slab 1 and fastened.

[0004]

In such a conventional wall balustrade, it is difficult to lower the bolt batting holes 12a of the wall balustrade accurately while accurately placing the plurality of anchor bolts 16 embedded in the floor slab 1 in advance. It requires skill to work. In addition, tightening bolts 18,19 to the upper and lower holes communicating between the wall balustrade 12 and the floor slab 1.
In the structure of inserting the fastening bolts, the fastening bolts cannot be inserted unless the holes are accurately aligned, and the work of inserting and fastening the fastening bolts is troublesome. Particularly, in the elevated work, it is difficult to insert the bolt from the bottom surface of the floor slab 1 with difficulty.

Further, in the conventional wall balustrade, there are many cases in which the wall balustrade is damaged and the floor slab 1 is also broken due to an automobile accident or the like, and maintenance is not easy if the shoulder portion of the floor slab 1 is broken due to the breakage of the bolt. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of eliminating the above-mentioned problems of wall balustrade, and its features are as described below.

That is, in the wall balustrade 2 which is erected and fixed to a floor slab 1 of a road bridge or the like, a fastening bolt insertion hole 3 is provided obliquely with respect to a substantially vertical standing direction of the wall balustrade. The fastening bolt insertion hole referred to here is an upper portion of an anchor bolt having a base embedded in a floor slab, or a fastening connection bolt 5 that is connected to an anchor bolt 6 (described later) via a coupler 7. It is a through hole.

The wall balustrade is characterized in that a recess 4 is provided above the fastening bolt insertion hole 3 and the fastening connection bolt 5 is connected to the anchor bolt 6 embedded in the floor slab 1 via a coupler 7.

In that case, the anchor bolt 6 on the floor slab 1 side
Is stronger than the fastening connecting bolt 5 on the railing side of the wall.

Further, hook streaks 8 corresponding to the buried holes 1a provided in the floor slab 1 of a road bridge or the like are provided on the bottom surface of the wall balustrade.

Further, according to the construction method of the wall balustrade of the present invention, when the wall balustrade 2 is erected and fixed to the floor slab 1 of a road bridge or the like, a coupler 7 screwed to the tip side of an anchor bolt 6 embedded in the floor slab 1 is screwed. Fastening connection bolts 5 that are provided upward from the floor slab 1 and are inserted into the bolt insertion holes 2a side of the wall balustrade 2.
It was decided to fix the wall balustrade 2.

In this case, it is advisable to fix the wall balustrade 2 with the fastening connecting bolts 5 inserted through the bolt insertion holes 2a of the wall balustrade 2 and extended and supported by the coupler 20.

[0013]

When the wall balustrade 2 is fixed to the floor slab 1, it has a structure in which the fastening bolt insertion hole 3 is provided obliquely with respect to the vertical standing direction of the wall balustrade. Even when tightening with bolts, bolting work can be done on the inner side of the wall balustrade, and even in the case of the structure in which the anchor bolt 6 embedded in the floor slab 1 and the coupler 7 are connected, the connecting bolt 5 for fastening is obliquely from above. Since it can be inserted, the work becomes easier. The effective height can be large.

In addition, there is a hollow 4 above the fastening bolt insertion hole 3.
By providing, the head of the fastening connecting bolt 5 is hidden in the wall balustrade. Further, when the fastening connecting bolt 5 is connected to the anchor bolt 6 embedded in the floor slab 1 through the coupler 7, the wall balustrade 2 is installed at a predetermined position of the floor slab 1 and the fastening connecting bolt 5 is fastened. Can be fastened by inserting it into the bolt insertion hole.

In this case, the anchor bolt 6 on the floor slab 1 side
Is greater than the strength of the fastening connection bolts 5 on the wall balustrade side, the fastening connection bolts 5 will be bent or damaged and the floor slab 1 will be damaged even if there is an impact on the wall balustrade due to an automobile accident or the like. prevent.

When the hook streak 8 corresponding to the embedding hole 1a provided in the floor slab 1 such as a road bridge is provided on the bottom surface of the wall balustrade, the hook streak is buried under pressure in the mortar, so that the floor slab 1
It is possible to firmly integrate the cast-in-place floor slab and the precast wall balustrade.

Further, in the wall balustrade installation method of the present invention, when fixing the wall balustrade 2 to the floor slab 1 of a road bridge or the like in a standing state, the coupler on the tip side of the anchor bolt 6 embedded in the floor slab 1 is used. Wall balustrade 2 closer to 7 from above
Since the fastening connecting bolt 5 is connected to the side of the bolt insertion hole 2a, the fastening connecting bolt 5 can be set in the fastening bolt insertion hole 3 of the wall balustrade 2 in advance.

When the fastening connecting bolt 5 extended and supported by the coupler 20 is used, when it is set in the fastening bolt insertion hole 3 of the wall balustrade 2 in advance, the downward projection amount becomes large, and the lower coupler Direct connection with 7 is easy.

[0019]

1 (a) and 1 (b) are a partially cutaway side view and a fragmentary front view of a first embodiment of the present invention. In the figure, 1 is a floor slab such as a road bridge. A fastening bolt insertion hole 3 is obliquely provided in a wall balustrade 2 which is fixed to the floor slab 1 upright. The wall balustrade is provided with a recess 4 above the fastening bolt insertion hole 3 on the side of the roadway. The recess 4 is provided on the side of the road so that the fastening connecting bolt 5 can be easily inserted into the fastening bolt insertion hole 3 and fastened. Further, a fixing metal fitting 2c is provided to firmly fix the road side, and is fixed by a bolt 2d embedded in the floor slab 1 side.

The fastening connecting bolt 5 is adapted to be connected to an anchor bolt 6 obliquely embedded in the floor slab 1 and a coupler 7 having a screw structure because it is screwed to the anchor bolt 6. Here, in order to make the anchor bolt 6 on the floor slab 1 side stronger than the fastening connecting bolt 5 on the wall balustrade side, the anchor bolt 6 on the floor slab 1 side is stronger than the fastening connecting bolt 5 on the wall balustrade side. Also has a large diameter. In order to provide this strength difference, it is possible to take other means such as changing the material between the bolts or making one hollow and the other solid. The wall balustrade 2 is inserted into the diagonally provided fastening bolt insertion hole 3 in advance of the floor slab 1
It may be inserted and fixed to the fastening connecting bolt 5 which is integrated by the anchor bolt 6 and the coupler 7 which are buried in the side,
The wall balustrade 2 may be integrated with the coupler 7 and the anchor bolt 6 after the installation.

In the example of FIG. 1, a hook streak 8 is provided on the bottom surface of the wall balustrade. The hook streak 8 is located at a position corresponding to an embedding hole 1a previously provided in the floor slab 1 of a road bridge or the like. On-site cast mortar 9 between the wall balustrade 2 placed on the floor slab 1 at the time of construction is also filled in the burial hole 1a, but in the mortar 9 there is a hook streak 8 protruding from the bottom of the wall balustrade. The structure is buried, which enables the upper and lower floor slabs 1 and the wall balustrade 2 to be integrated with each other and to stop water.

Next, referring to FIGS. 2 (a) to 2 (c), an embodiment of the method for installing the wall balustrade of the present invention is shown. Unlike the one shown in FIG. 1, the wall height section described here has a bolt insertion hole 2a,
In order to maintain a firm fixation, the fixing fastening part 10 on the roadside
And the bolt insertion hole 10a therefor, the structure is substantially the same as that shown in FIGS. 4 (b) and 4 (c) which is conventionally used. First, as shown in (a), in order to fix the wall balustrade 2 to the floor slab 1, the coupler 7 screwed to the tip side of the anchor bolt 6 at the time of molding the floor slab 1 is The anchor bolt 6 and the anchor bolt 13 for fixing are embedded in a state of opening upward from 1. Anchor bolt 6 and anchor bolt
The base 13 is integrated with an anchor fixing member 14 for reinforcement.

In this state, the wall balustrade 2 is hung and carried by the hanging means 15 such as a crane, and the bolt insertion holes 2a of the wall balustrade 2 and the coupler 7 are hung at the corresponding positions. In this state, as shown in (b), the fastening connecting bolt 5 is previously inserted into the bolt insertion hole 2a and appropriately hung, or is inserted from the upper portion and the lower portion is screwed and coupled to the coupler 7. . Then, as shown in (c), the fixing bolt 15 is fastened by the connecting bolt 5, and the fixing bolt 15 on the roadside is screwed and connected to the coupler 7 to complete the fixing.

Also in this example, the strength of the anchor bolt 6 on the floor slab 1 side is preferably set to be greater than the breaking strength of the fastening connecting bolt 5 on the wall balustrade side.

As a method for burying the anchor bolts 6 and 13 on the floor slab 1 side, various conventionally known methods can be adopted. In the example shown in FIG. 3, anchor bolts 6 and 13 having bifurcated retainers 17 are embedded in the base portion.

The examples shown in FIGS. 3 (a), 3 (b) and 3 (c) have been devised in addition to the above-mentioned construction method. When the wall balustrade 2 is hung and carried by a hanging means 15 such as a crane, the wall is preliminarily used. The fastening connecting bolt 5 can be suspended in the bolt insertion hole 2a of the balustrade 2. For that purpose, the coupler 20 and the extension bolt 21 are screwed into the upper part of the fastening connection bolt 5, whereby the fastening connection bolt 5 is maintained in a stable suspended state, and the lower end of the fastening connection bolt 5 is connected to the coupler 7. Prior to threading and connecting the parts (Fig. 3 (c)), apply the tip of the connecting bolt 5 for fastening to the coupler 20 as shown in (b), lower the wall rail 2 and turn the extension bolt 21 side. The fastening connecting bolt 5 is tightened, then the coupler 20 and the extension bolt 21 are removed, the nut screwed into the extension bolt 21 is removed, and the nut is fitted into the upper screw of the fastening connecting bolt 5 and fastened. As a result, the work of inserting the connecting bolt for fastening into the bolt insertion hole after installation on the wall balustrade can be omitted, and the workability can be greatly improved. The state after the fastening is the same as in FIG. 2 (c).

[0027]

According to the present invention, since the fastening bolt insertion holes are provided obliquely in the wall balustrade, the fastening connecting bolts or the anchor bolts are obliquely fastened and fixed, so that the effective height of the wall balustrade wall portion is large. It is also easy to fasten and fix.

Since the anchor bolts are connected vertically through the coupler on the way, the construction becomes easy.

Since the strength of the anchor bolts on the floor slab side is higher than that of the fastening connection bolts 5 on the wall balustrade side, when a car collides with the wall balustrade, the floor slab body that is cast in-situ does not break, and Since only the balustrade is broken, only the wall balustrade needs to be replaced, and maintenance is easy.

Since the hook streak is provided on the bottom surface of the wall balustrade, the cast-in-place part and the precast wall balustrade can be integrated and the water can be stopped. Further, the effect of improving the shearing force against the impact force due to the collision of the vehicle can be obtained.

[Brief description of drawings]

FIG. 1 (a) is a partially cutaway side view of a first embodiment of the present invention,
(b) is a fragmentary front view of the main part.

2 (a) to 2 (c) are cross-sectional views showing a method of installing a wall balustrade of the present invention.

3 (a) to 3 (c) are cross-sectional views showing another installation method.

4 (a) to (c) are cross-sectional views showing an example of installation of a conventional wall balustrade.

[Explanation of symbols]

 1 Floor slab 2 Wall balustrade 3 Fastening bolt insertion hole 4 Neck 5 Connection bolt for fastening 6 Anchor bolt 7 Coupler 8 Hook streak 20 Coupler 21 Extension bolt

Claims (7)

[Claims] 1. A wall balustrade, wherein a fastening bolt insertion hole 3 is provided in a wall balustrade 2 fixed to a floor slab 1 of a road bridge or the like at an angle with respect to a substantially vertical standing direction of the wall balustrade. . 2. The wall balustrade according to claim 1, wherein a recess 4 is provided above the fastening bolt insertion hole 3. 3. A wall characterized by connecting a fastening connecting bolt (5) to an anchor bolt (6) embedded in the floor slab (1) through a coupler (7) in a wall balustrade (2) standing and fixed to a floor slab (1) such as a road bridge. Handrail. 4. The wall balustrade, wherein the anchor bolt 6 on the floor slab 1 side according to claim 3 is stronger than the fastening connecting bolt 5 on the wall balustrade side. 5. A wall balustrade in which a hook streak 8 corresponding to a buried hole 1a provided in a floor slab 1 of a road bridge or the like is provided on the bottom surface of a wall balustrade 2 which is erected and fixed to a floor slab 1 of a road bridge or the like. 6. A state in which a coupler 7 screwed onto the tip side of an anchor bolt 6 embedded in the floor slab 1 is opened upward from the floor slab 1 when the wall balustrade 2 is vertically fixed to the floor slab 1 of a road bridge or the like. The installation method of the wall balustrade 2 in which the wall balustrade 2 is fixed by the connecting bolts 5 for fastening which are inserted in the bolt insertion holes 2a side of the wall balustrade 2. 7. A state in which a coupler 7 screwed to the tip side of an anchor bolt 6 embedded in the floor slab 1 is opened upward from the floor slab 1 when the wall balustrade 2 is vertically fixed to the floor slab 1 of a road bridge or the like. The connection bolt 5 for fastening, which is provided on the wall, is inserted into the bolt insertion hole 2a side of the wall balustrade 2, and is extended and supported by the coupler 20.
The installation method of the wall balustrade that fixes the wall balustrade 2 by.