JPS5930852B2 - joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a joint structure between a steel plate cell and an arc member.

Conventionally, when joining the bodies of a plurality of steel plate cells 1 at both ends of an arc member 20 as shown in FIG.
The materials generally used for piles, such as steel pipe sheet piles and steel sheet piles, are used.

The above joint structure includes a joint structure in which two pipe members 4A and 4B are combined as shown in FIG. 2, a joint structure in which a pipe member 4AKT-shaped member 5 is combined as shown in FIG. As shown in FIG.
There are joint structures in which a box-shaped protective member 7 is combined with a 5KT-shaped member 5 as shown in Fig. 5, but these do not take much consideration to the tensile force shown by the arrow T. Therefore, there was a problem that the joint structure 3 between the steel plate cell 1 and the arc member 2, on which the tensile force T acts, lacks strength.

That is, for example, when a tensile force T is applied to the joint structures shown in FIGS. 3 and 4, a bending moment mainly acts on each member, deforming them in the directions indicated by the arrows in FIGS. 6 and 7, respectively. There was a fear that it would open and the princess would break it.

Therefore, the present invention has been made to solve the above-mentioned conventional drawbacks and problems, and when a tensile force is applied to the joint between the steel plate cell and the arc member, the cross section of the joint increases and the joint becomes stiff. The object of the present invention is to provide a joint structure that reduces the tensile force acting on the joint member and increases the resistance against bending moment (K).

In other words, the first invention provides a plurality of parallel plates and a plurality of parallel plates one more than the parallel plates at corresponding positions of the joint portion of the steel plate celto-arc member, and connects the plurality of parallel plates to the one. In addition, the outermost parallel plate of the plurality of parallel plates, which is one more, and the plurality of parallel plates inserted inside this parallel plate, can be inserted between the plurality of parallel plates. The parallel plate is provided with a protrusion on each of the parallel plates except for the corresponding surfaces, and the protrusion is engaged by the tensile force between the steel plate cell and the arc member. be.

The second invention also provides a plurality of parallel plates provided at corresponding positions of the joint portion of the steel plate cell and the arc member, and a plurality of parallel plates one less than the number of parallel plates inserted between the respective parallel plates. a separate plate-like member, except for the corresponding surface of the outermost parallel plate among the plurality of parallel plates and the separate plate-like member inserted inside the parallel plate, The parallel plate and the separate plate-like member are each provided with a protrusion, and each of the protrusions is locked by a tensile force between the steel plate and the arc member. .

The present invention will be described in detail below with reference to the drawings, in which the same parts as in each of the conventional examples shown in FIGS. 1 to 7 are indicated by the same part numbers.

First, in the first embodiment of the present invention shown in FIG. 8, the joint structure 3 between the steel plate cell 1 and the arc member 2 is such that the T-shaped member 2A at the end of the arc member 2 forms a U-shape.
21 parallel plate-like protruding members 8A and 8B made of steel plates.
are made to protrude toward the steel plate cell 1, and these are welded together. At the same time, three cages are placed on the member 1A on the steel plate cell 1 side at positions corresponding to sandwich the two protruding members 8A and 8B, respectively. Projecting member 9A made of parallel steel material
, 9B, and 9A are welded together. Of these, the protruding members 9A and 9A on both sides are connected to the protruding member 9 in the center.
It is shorter than B and is disposed at a position so as to substantially touch the outer surfaces of the opposite protruding members 8A and 8B.

Therefore, the protruding members 9A and 9B on the steel plate cell 1 side.

Of 9A, locking pieces 10A and 10B are welded to both sides of the tip of the center protruding member 9B, and on the other hand, locking pieces 10A and 10B are also latched to the inner side of the tip of each of the protruding members 8A and 8B on the arc member 2 side. The pieces 10C and 10D are welded together.

In this way, the locking pieces 10A and 100 and the IOB and 10
From the fact that D is arranged, the steel plate cell 1 and the arc member 2
When a tensile force T acts between them, these locking parts 10A and 10C and 10B and 10D
It can fully withstand the tensile force TK.

Furthermore, by injecting a water-stopping material such as mortar into the space A formed by the protruding members 8A, 8B, and 9B, a complete water-stopping effect can be obtained, and the joint structure 3 of the present invention is more effective than the conventional joint structure 3. is compact and small.

Next, the resistance function against the tensile force T' held by the protrusion member 8B provided with the locking piece 10D and the protrusion member 9B provided with the locking pieces 10B and 10A will be explained based on FIG.

Let R2 be the resistance force against 1/2 of the tensile force T between the locking pieces 10D and 10B, and let R3 be the resistance force of the protruding member 9A against deformation of the protruding member 8B due to the tensile force T. If the distance from the center line C of the protruding member 8B to the concentration point of the resistance force R2 is 42, and the distance from the contact point of the locking piece 10D and IOB to the midpoint of the resistance force R3 is 13, then the resistance force is The relationship between R2 and tensile force T is R2-T/2
From =0, R2-T/2, and R2・4=R3・
From the relationship of R3, it becomes R3-R2·k, that is, R3-172 nights.

, l-3t3 If it is R3-n-R2, it becomes R3-1.

n Therefore, when the protruding member 8B is pulled with a tensile force T/2, the force acting on the protruding member 9AVC becomes 1/n of T/2.

In this case, a bending moment of the protruding member 9AK occurs, but
Since the force acting on this is small, there is no need to worry about deformation of the protruding member 9A.

Therefore, the size of the cross section of each member of the joint structure 3 should be appropriately determined according to the magnitude of the tensile force T.

, 9°, K>Itj 'a-- to #'1.111° The same is true for joint structure 3 in which protruding members 9A, 9B, 9A and protruding members 8A, 8B on the arc member 2 side are replaced. can perform various functions.

Next, in Embodiment 2 of the present invention shown in FIG. 10, the same parts as Embodiment 1 in FIG. The side member IAK is a protruding member 9A, 9B having the same structure as in the first embodiment.
9A is provided, and the T-shaped member 2A (ljlK
Exactly similar protruding members 9A, 9B, 9 are provided at positions symmetrically corresponding to the protruding members 9A, 9B, 9A provided on the steel plate cell 1 side.
A, and between each of the protruding members 9A, 9B, and 9A on both sides, a protruding member 8 having the same structure as that provided on the arc member 2 side in Example 1 and having locking pieces 10C provided on both sides.
Separate joint structures 11A and 11B each consisting of a protruding member 8B provided with a locking member B and a locking piece 10D on both sides are inserted on the left and right sides.

As a result, as in Example 1, the protruding member 9B on the steel plate cell 1 side and the protruding member 9BK of the arc member 2 have a sufficient resistance function against the tensile force TK on average, and the space A is water-tight. By injecting the material, a complete water-stopping effect can be obtained.

Note that the joint structure of the present invention is not limited to the configurations shown in Examples 1 and 2 above, but at least each of the plurality of protruding members formed to protrude from both sides of the steel plate cell and the arc member. Any type of joint structure is effective as long as one or more protruding members have a function of resisting the tensile force between the steel plate cell and the arc member.

As described above, according to the first invention, since the plurality of parallel plates are inserted between the plurality of parallel plates one more than this parallel plate, there is always one more than one parallel plate on the outside of the plurality of parallel plates. There are multiple parallel plates.

Moreover, no protrusion is provided on the surface of the outermost parallel plate of the plurality of parallel plates, which is more than one, and the surface corresponding to the plurality of parallel plates inserted inside the outermost parallel plate.

Therefore, the protrusions provided on each parallel plate are locked by the tensile force of the steel plate cell and the arc member, and even if a bending moment occurs in the inserted parallel plate, the outermost parallel plate will prevent the bending moment from occurring. Deformation is prevented.

Furthermore, in the present invention, as mentioned above, by increasing the cross section of the joint, the tensile force acting on the individual protrusions is reduced, and the bending moment acting on the inserted parallel plate is reduced. Deformation of the parallel plates can be more easily prevented, and deformation and destruction of the joint due to insufficient strength of the joint structure as in the past can be easily prevented.

In the second invention, the same effect can be achieved by inserting a separate plate member between the parallel plates.

Therefore, according to the present invention, it is possible to obtain a joint structure that is compact and has a simple structure, but is significantly stronger in terms of tensile force than the conventional joint structure.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the joint state of the steel plate cell and the arc member, Figs. 2 to 5 are plan views showing the joint structure of the steel plate cell and the arc member for discrimination, respectively, and Fig. 6 is the Figure 7 is a plan view of a joint structure explaining the shortcomings of the conventional example shown in Figure J. Figure 7 is a plan view of a joint structure explaining the shortcomings of the conventional example shown in Figure 4. Figure 8 is a steel plate cell in Example 1 of the present invention. An enlarged plan view of the joint structure with the arc member, FIG. 9 is an enlarged plan view of the main part explaining the tensile force resistance function of the joint structure of FIG. 8, and FIG. 10 is an enlarged plan view of the steel plate cell in Example 2 of the present invention. FIG. 3 is an enlarged plan view of a joint structure with an arc member. DESCRIPTION OF SYMBOLS 1... Steel plate cell, 2... Arc member, 3... Joint structure, 8A, 8B, 9A, 9B... Projection member, 10A. 10B, 10C, 10D--locking pieces, 11a. 11b...Joint structure, R2, R3...Resistance, T.
...Tensile force.

Claims (1)

[Claims] 1. At the corresponding position of the joint between the steel plate cell and the arc member,
A plurality of parallel plates and a plurality of parallel plates one more than the parallel plates are respectively provided, and the plurality of parallel plates are inserted between the plurality of parallel plates one more than the parallel plates so as to form a 5 x 5 configuration, and Except for the corresponding surfaces of the outermost parallel plate among the plurality of parallel plates and the plurality of parallel plates inserted inside this parallel plate,
A joint structure for a steel plate cell and an arc member, characterized in that each of the parallel plates is provided with a protrusion, and each of the protrusions is engaged by a tensile force between the steel plate cell and the arc member. 2. A plurality of parallel plates provided at corresponding positions of the joint between the steel plate cell and the arc member, and a plurality of separate plate-like members, one less than the parallel plates, inserted between the respective parallel plates. and the parallel plate and the separate plate, except for corresponding surfaces of the outermost parallel plate among the plurality of parallel plates and the separate plate member inserted inside the parallel plate. A joint structure for a steel plate cell and an arc member, characterized in that a protrusion is provided on each of the plate-like members, and the protrusions are respectively locked by a tensile force between the steel plate and the arc member.