JPH10102410A - Web-plate mounting construction for steel joint in highway bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce moment applied to face plates of a steel joint and web plates and to simplify steel joint construction by mounting the web plates to the bottoms of the face plates in the direction of the width of a road bridge to the insides from tooth-profile valley sections of the face plates. SOLUTION: Mounting positions of web plates 3 mounted in the direction of the width of a highway bridge are set in the insides from tooth-profile valley sections V of face plates, and trapezoid holes 15 are formed in mounting sections of the tooth-profile valley sections to the web plates 3. By the constitution, moment applied to the face plates 1 of a steel joint 2 and web plates 3 can be reduced, and steel joint construction can be simplified. When concrete is cast in the steel joint 2, air mixed in concrete cast in the steel joint 2 is easily exhausted from the holes 15, and strength of concrete connected to the steel joint 2 can be increased by protruding the cast concrete from the holes 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antinode of a steel joint of a road bridge, which appropriately absorbs expansion and contraction of a road bridge such as an elevated highway in the length direction of the road due to a temperature difference in summer or winter. It relates to a plate mounting structure.

[0002]

2. Description of the Related Art Conventionally, as described above, as a steel joint provided on a road bridge to absorb expansion and contraction in the longitudinal direction of a road due to a temperature difference between summer and winter, as shown in FIGS. , A pair of steel face plates 1 each having a tooth profile composed of a peak portion indicated by an arrow H and a valley portion indicated by an arrow V, and the corresponding peak portions H and valleys V respectively corresponding to the length of the road. Suitable play space D that can absorb expansion and contraction in the direction
And a steel joint 2 for a road bridge, which is arranged while holding the steel sheet.

[0003] On each bottom surface of the face plate 1, a vertical abdominal plate 3 is attached by welding as shown by an arrow W in Fig. 6 in the width direction of the road bridge. A rib plate 5 ′ having plate holes 4 at appropriate intervals is attached by welding to the inside of the plate 3 as shown by an arrow W, and an anchor plate 6 is provided on the lower surface of the face plate 1 as shown in FIG. Anchor bars 7 are attached to the inside of the abdominal plate 3, respectively. As shown in FIG. 6, concrete 8 is cast to connect the anchor plates 6 and the anchor bars 7 to the reinforcing steel bars and connect them to the steel joint 2. .

However, in the conventional steel joint 2, as shown in FIGS. 6 and 7A, a tooth-shaped valley V composed of the valley V and the ridge H of the face plate 1 is provided.
Is usually attached to the outside of the steel plate 2 by welding W. In this case, the vehicle load P of the vehicle running on the steel joint 2 is reduced by the finger of the tooth shape of the face plate 1, particularly the finger of the peak H. It is repeatedly added to the tip of the part. In FIG. 6, a large moment is applied to the face plate 1 and the abdominal plate 3 as shown by an arrow M, and thus the thickness of the face plate 1 is increased and the structure of the support member of the face plate 1 is complicated. There is.

[0005] As shown in FIG.
When the concrete 8 connected to the steel joint 2 is poured into the lower surface and inside the abdominal plate 3, air bubbles are mixed in the filled concrete 8 because there is no way for air to be mixed in the concrete 8 sent in. Solidified as it is,
As a result, concrete 8
Is not completely filled, and strong concrete 8 is not poured.
There is a problem that the heavy load and vibration of the vehicle that repeatedly travels on the finger of the toothed peak portion H easily damages the steel joint 2 portion.

Between the belly plates 3 attached to the lower surfaces of the pair of steel face plates 1 as described above, rainwater falls from the tooth gaps D of the face plates 1. In the case of the above, it is necessary to collect and drain the above-mentioned rainwater with a suitable rubber gutter or the like. Prevent rainwater from falling from below to the ground.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a steel joint face plate in which a pair of steel face plates each having a tooth profile including a peak portion and a valley portion are disposed while maintaining an appropriate play. The structure can be simplified by reducing the moment applied to the abdomen and the abdominal plate.Also, it is possible to prevent air bubbles from being mixed in the concrete that is connected to the steel joint face plate and cast, and to completely fill the concrete. Provided is a bridge joint mounting structure of a steel joint of a road bridge that can be performed.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a bellows plate mounting structure for a steel joint, comprising a pair of steel face plates each having a tooth profile including a peak and a valley. Is a steel joint of a road bridge which is disposed while holding an appropriate play space, wherein each abdominal plate attached to a bottom surface of each of the face plates in a width direction of the road bridge is provided with a tooth-shaped valley portion of the face plate. More specifically, the rubber gutter provided between the belly plates attached to the bottom surfaces of the pair of steel face plates is provided with a plurality of stoppers along the mounting surface of each belly plate. It consists of an abdominal plate mounting structure of a steel bridge joint of a road bridge fixed with a rubber rod-shaped rubber for water.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a steel joint of a road bridge according to an embodiment of the present invention; FIG. As shown in FIG. 1, a pair of steel face plates 1 each having a tooth profile composed of a peak portion indicated by an arrow H and a valley portion indicated by an arrow V correspond to the corresponding peak portions H and valley portions V as shown in FIG. Appropriate play space D (for example, D = 45 mm in this embodiment)
, Thereby forming the steel joint 2 of the road bridge.

On the bottom surface of each of the face plates 1, abdominal plates 3 attached in the width direction of the road bridge are attached by welding as shown by arrows W in FIG. As shown in FIGS. 1, 2 and 3, each of the face plates 1 is mounted inside the tooth-shaped valley V. In other words, in each of the perspective views of FIGS. 1 and 2 (a), a trapezoidal hole indicated by 15 is formed in the mounting portion between each tooth-shaped valley V and the abdominal plate 3 when the face plate 1 and the abdominal plate 3 are mounted. Department will be able to do.

As shown in FIGS. 1 and 5, an anchor rib plate 5 having a plate hole 4 is provided by an arrow W at an appropriate interval in the width direction of the road bridge at an attachment portion between the face plate 1 and the abdominal plate 3. It is attached by welding as shown, and further functions as a member for reinforcing the connection between the steel joint 2 and the concrete 8 when the concrete 8 shown in FIG.

FIG. 2 (a) is a perspective view for the sake of convenience, showing the mounting positional relationship between the face plate 1 and the abdominal plate by further expanding the play D between the tooth profiles of the face plate 1 of FIG. As described above, the mounting position of the abdominal plate 3 is mounted inside the toothed valley V of the face plate 1 so that the vehicle load P running on the steel joint 2 acts on the toothed peak H in FIG. When this is done, the moment M applied to the finger portions of the abdominal plate 3 and the face plate 1 becomes smaller than that of the conventional example shown in FIG. 6, and the structure of the steel joint 2 is simplified accordingly.

Further, since the abdominal plate 3 is located inside the valley V of the tooth profile of the face plate 1, the dimension L in FIG. 5 increases, and the welding length of the anchor rib plate 5 indicated by the arrow W increases. , The strength for resisting the moment M increases accordingly. Further, as shown in FIG. 5, when concrete 8 is cast by connecting to the steel joint 2 including the face plate 1 and the belly plate 3, the concrete 8 is mixed in the concrete 8 cast on the back surface of the face plate 1. Air is easily discharged from the hole 15 formed between the valley V of the face plate 1 and the abdominal plate 3, so that no air bubbles remain in the concrete to be poured, and the concrete 8 is poured. Since the sometimes filled concrete protrudes from the hole 15, it can be easily confirmed that the concrete 8 has been filled up to the upper part of the abdominal plate 3 on the bottom surface of the face plate 1, and a good and strong concrete 8 can be poured. it can.

Next, as shown in FIG. 3, rubber gutters 9 are arranged in the width direction of the road bridge between the belly plates 3 attached to the bottom surfaces of the pair of steel face plates 1, respectively. ,
In the present invention, both end portions of the rubber gutter 9 are provided along the mounting surface of each abdominal plate 3 with a plurality of, for example, two water-stopping rubber rods 10 interposed therebetween, as in the present embodiment, and a tower metal 12 is provided. Are fixed using bolts 14 and nuts 13.

In this case, as shown in FIG. 4, a groove having a semicircular cross section is provided on the mounting surface of the abdominal plate 3, and an adhesive is applied in this groove, and the bar-like rubber 10 is temporarily fixed, and the rubber gutter 9 is bolted. If it is fixed to the abdominal plate 3 side by tightening with 14 and nut 13,
It has been confirmed by an experiment that it is extremely effective in stopping water on the mounting surface of the rubber gutter 9. FIG. 2 (b)
FIG. 7A is a plan view of a main part of FIG. 2A, that is, a main part showing an attachment positional relationship between a valley where the abdominal plate 3 is mounted inside the valley of the face plate 1 of the present invention and the abdominal plate. 7B is a plan view of a main part of FIG. 7A, that is, a main part showing an attachment positional relationship between a valley where the abdominal plate 3 is mounted outside the valley of the conventional face plate 1 and the abdomen. Therefore, it is apparent from these figures that the position of the abdominal plate 3 with respect to the face plate 1 of the present invention and the conventional one is different.

[0016]

According to the above-described structure for mounting a steel joint on a road bridge according to the present invention described above, a pair of steel face plates each having a tooth shape including a peak portion and a valley portion are provided between the tooth shapes. It is possible to reduce the moment applied to the face plate and the abdominal plate of the steel joint which is disposed while maintaining an appropriate play, so that the structure of the steel joint can be simplified. It prevents bubbles from remaining in the concrete that is connected to the face plate of the joint and casts it, and it is easy to check the filling of the concrete, so it is possible to improve the strength of the concrete connected to the steel joint. .

Further, since water is completely stopped at the mounting surface of the rubber gutter attached between the bellows attached to the lower surfaces of the pair of face plates, rainwater or the like is formed from the lower part of the steel joint of the road bridge. Can be prevented from falling to the ground.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a steel plate joint structure for a steel joint of a road bridge according to an embodiment of the present invention.

FIG. 2A is a perspective view of a main part in a state where each face plate is separated for convenience of explanation of a mounting position of the face plate and the abdominal plate, and FIG. 2B is a plan view of a main part of FIG. .

FIG. 3 is a side view of a main part showing a state in which a rubber gutter is attached between each abdominal plate of FIG. 1;

FIG. 4 is a side view for explaining a main part for fixing a rubber gutter to the belly plate of FIG. 3 with a water-stopping rod-shaped rubber interposed therebetween.

FIG. 5 is a side view of a principal part for explanation showing a moment when a vehicle load is applied to a mountain portion of the face plate of the steel joint of FIG. 3;

FIG. 6 is a side view for explaining an essential part showing a moment when a vehicle load is loaded on a mountain portion of a conventional steel joint.

7A is a perspective view of a main part showing a positional relationship between a face plate and an abdominal plate of the steel joint of FIG. 6, and FIG.
2 is a plan view of a main part of FIG.

FIG. 8 is a perspective view of a main part showing an entire assembled state of the conventional steel joint of FIG. 7;

[Description of Signs] 1 face plate 2 steel joint 3 belly plate 9 rubber gutter 10 rod-shaped rubber D play space 11 peak V trough

Claims (2)

[Claims] 1. A steel joint for a road bridge in which a pair of steel face plates having a tooth profile consisting of a peak and a valley are disposed while the corresponding ridges and valleys maintain an appropriate clearance. An abdominal plate mounting structure for a steel joint of a road bridge, wherein each abdominal plate attached in the width direction of the road bridge is mounted on a bottom surface of each of the face plates inside a toothed valley of the face plate. 2. A plurality of water-stopping rod-like rubbers are provided along both sides of a rubber gutter provided between respective belly plates attached to the bottom surfaces of a pair of steel face plates along the mounting surfaces of the respective belly plates. The abdominal plate mounting structure for a steel joint of a road bridge according to claim 1, wherein the steel plate joint is fixed with an interposition.