Piers and bridges

Abstract

To provide a bridge pier and the like that can streamline the construction of a pier and the like.SOLUTION: A bridge pier 3 supports a pier floor. The bridge pier 3 includes three piles 31 arranged at positions at the vertices of a triangle on a plane and a brace 32 provided between adjacent sets of the piles 31. The brace 32 has diagonal members 32a, 32b that incline in different directions and horizontal members 32c. The diagonal members 32a, 32b are arranged in a triangular wave shape along the vertical direction, and the diagonal members 32a, 32b do not intersect each other at the intermediate parts. The horizontal member 32c is provided at a height corresponding to the apex of every other triangular wave.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a bridge pier and a bridge having the same. [Background technology]

[0002] Patent Document 1 describes a method for constructing a pier in mountainous areas, etc., in which a guide material is extended from the existing span of the pier, the rear pile of the pier is driven into the middle of this guide material, and the front pile of the pier is further driven into the front of the guide material, thereby constructing a pier with three piles arranged at the vertices of a triangle on a plane.

[0003] 5 is a side view of the pier 30. As shown in FIG. 5, the pier 30 has piles 310 and braces 320, and supports the floor of the pier, which is made up of the main girder 50 and the covering plate 70.

[0004] Brace 320 is arranged in a truss shape between adjacent piles 310. That is, brace 320 has diagonal members 320a and 320b that incline in different directions and horizontal member 320c, and is arranged so that the middle portions of diagonal members 320a and 320b intersect. Horizontal member 320c is arranged to connect the upper ends and lower ends of diagonal members 320a and 320b.

[0005] In Patent Document 1, three piles 310 placed at the vertices of a triangle enable the construction of a highly rigid pier 30. By increasing the rigidity of the pier 30, the span length between the piers 30 can be increased even without support piles between the piers 30, thereby improving the efficiency of pier construction. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2019-131978 Summary of the Invention [Problem to be solved by the invention]

[0007] Currently, there is a demand for greater efficiency in the construction of piers, etc. In this regard, there is room for further rationalization in the configuration of the pier 30 described above, particularly the arrangement of the braces 320, which could potentially lead to more efficient construction.

[0008] The present invention has been made in consideration of the above problems, and aims to provide a pier or the like that can improve the efficiency of construction of a pier or the like. [Means for solving the problem]

[0009] The first invention for solving the above-mentioned problems is a bridge pier that supports the deck of a bridge, and is equipped with three piles arranged at positions that become the vertices of a triangle in a plane, and a brace provided between each pair of adjacent piles, and the brace has diagonal members and horizontal members that are inclined in different directions, and the diagonal members are arranged in a triangular wave shape along the vertical direction, and the diagonal members that are inclined in different directions do not cross each other at their intermediate portions, All of the horizontal members of the brace are provided at heights corresponding to all of the alternate vertices of the triangular waves that continue in a zigzag pattern, and the horizontal members are not provided at heights corresponding to the other vertices, Between all pairs of posts The braces are provided at a position lower than the top of each pile, and the braces between all pairs of piles are arranged in the same position when viewed from the side from outside the triangle formed by the three piles in a plan view. This is a bridge pier characterized by the following.

[0010] In this invention, three piles are positioned at the vertices of a triangle in plan view, and the pier formed by the front and rear piles in a planar triangular shape has high rigidity. Therefore, by configuring the braces installed between adjacent piles as described above, the number of diagonal members can be reduced compared to the example in Figure 5, and construction efficiency can be improved by streamlining the braces.

[0011] Also The present invention also makes it possible to reduce the number of horizontal members, thereby improving construction efficiency.

[0012] The second invention is a bridge having piers and a deck supported by the piers, wherein the piers are provided with three piles arranged at positions that are the vertices of a triangle in plan view, and a brace provided between each pair of adjacent piles, and the brace has diagonal members and horizontal members that are inclined in different directions, and the diagonal members are arranged in a triangular wave shape along the vertical direction, and the diagonal members that are inclined in different directions do not cross each other at their intermediate portions, All of the horizontal members of the brace are provided at heights corresponding to all of the alternate vertices of the triangular waves that continue in a zigzag pattern, and the horizontal members are not provided at heights corresponding to the other vertices, Between all pairs of piles The braces are provided at a position lower than the top of each pile, and the braces between all pairs of piles are arranged in the same position when viewed from the side from outside the triangle formed by the three piles in a plan view. This is a bridge characterized by the following. A second invention is a bridge including the pier of the first invention. [Effects of the Invention]

[0013] The present invention can provide a pier or the like that can improve the efficiency of construction of a pier or the like. [Brief explanation of the drawings]

[0014] [Figure 1] A diagram showing Pier 1. [Figure 2] A diagram showing pier 3. [Figure 3] A diagram showing pier 3'. [Figure 4] Example of pile 31 placement. [Figure 5] A diagram showing a bridge pier 30. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0016] 1 and 2 are diagrams showing a pier 1 (bridge) including a pier 3 according to an embodiment of the present invention. Fig. 1 is a perspective view showing a part of the pier 1. Fig. 2(a) is a diagram showing the pier 3 from the side, and Fig. 2(b) is a diagram showing the pier 3 from above.

[0017] The pier 1 is composed of a plurality of span sections 10, and each span section 10 has a configuration in which a main girder 5 is placed on a pier 3, and a covering plate 7 is placed on the main girder 5.

[0018] In the present invention, the main girders 5 and the covering plates 7 constitute the floor of the pier 1. The main girders 5 are installed so as to span over adjacent piers 3, and a total of three covering plates 7 are arranged on both sides and in the center in the width direction of the pier 1 (hereinafter referred to as the pier width direction).

[0019] The pier 3 has piles 31 and braces 32 .

[0020] A total of three piles 31 are arranged at positions corresponding to the vertices of a triangle in plan view. In this embodiment, the pier 1 is constructed so as to extend in the direction indicated by arrow a, with two piles 31 arranged in front of this extension direction a and one pile 31 arranged in the rear. The pier 1 can be constructed by the method described in Patent Document 1, but is not limited to this.

[0021] As shown in Figures 2(a) and (b), a V-shaped support girder 33 for supporting the floor (main girder 5 and covering plate 7) is spanned between the tops of the two front piles 31 and the single rear pile 31. A cross girder 35 is spanned between the V-shaped support girders 33 in the width direction of the pier (corresponding to the normal direction to the paper surface in Figure 2(a) and the up-and-down direction in Figure 2(b)), and the main girder 5 is placed on this cross girder 35.

[0022] Furthermore, steel members 37 such as H-shaped steel members are arranged at the pile heads of the rear piles 31 in the width direction of the pier, and the support girders 33 are placed on top of these steel members 37. In this embodiment, the piles 31 are arranged at positions corresponding to the vertices of an equilateral triangle, allowing the pier 3 to resist external forces from all directions in a balanced manner.

[0023] The brace 32 is disposed between adjacent piles 31. As shown in FIG. 2(a), the brace 32 has diagonal members 32a and 32b and a horizontal member 32c.

[0024] The diagonal members 32a and 32b are inclined in different directions. That is, the diagonal member 32a is inclined toward the left side of FIG. 2(a) as it goes upward, and the diagonal member 32b is inclined in the opposite direction, i.e., toward the right side of FIG. 2(a), as it goes upward.

[0025] Compared to the conventional example of Figure 5, the brace 32 of this embodiment has one of the diagonal members 32a, 32b that cross each other at the middle section omitted, and the horizontal member 32c is reduced to half.

[0026] That is, the diagonal members 32a and 32b are arranged in a triangular wave (zigzag) pattern along the vertical direction, and the middle parts of the diagonal members 32a and 32b do not intersect with each other. Also, the horizontal members 32c are not provided at heights corresponding to the apexes of the triangular waves, but at heights corresponding to every other apex of the triangular waves.

[0027] Note that Figure 2(a) shows a brace 32 installed between one pair of adjacent piles 31 out of three piles 31 arranged at each vertex of a triangle, but braces 32 are also installed between the other two pairs of piles 31 in the same arrangement as Figure 2(a).

[0028] As explained above, according to this embodiment, the three piles 31 are located at the vertices of a triangle in plan view, and the pier 3 formed into a triangular shape in plan view by the front and rear piles 31 has high rigidity. Therefore, for the braces 32 provided between the piles 31, the numbers of both the diagonal members 32a, 32b and the horizontal members 32c can be reduced as described above, and rationalization of the braces 32 can realize efficient construction.

[0029] However, the present invention is not limited to the above embodiment. For example, as shown in the brace 32' of the pier 3' in Fig. 3, it is also possible to reduce the number of diagonal members 32a, 32b compared to the conventional example in Fig. 5, which also makes it possible to improve the efficiency of construction.

[0030] In the example of Figure 3, the diagonal members 32a and 32b are also arranged in a triangular wave shape along the vertical direction, and the middle parts of the diagonal members 32a and 32b do not intersect with each other, but the horizontal member 32c is arranged at a height corresponding to each apex of the triangular wave.

[0031] In addition, in this embodiment, there are two piles 31 on the front side of the extension direction a of the pier 3 and one pile 31 on the rear side, but as shown in Figure 4, it is also possible to have two piles 31 on the rear side and one pile 31 on the front side, and the orientation of the triangle of the pier 3 is not particularly limited.

[0032] The present invention is not limited to mountainous areas, but can be applied when constructing the pier 1 in various other locations. Furthermore, the present invention is not limited to the pier 1, but can also be applied when constructing other bridges.

[0033] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that those skilled in the art can conceive of various modifications or alterations within the scope of the technical ideas disclosed herein, and it is understood that these modifications also fall within the technical scope of the present invention. [Explanation of symbols]

[0034] 1: Pier 3, 3', 30: Pier 5, 50: Main digit 7, 70: Covering plate 10: Span part 31, 310: Pile 32, 32', 320: Brace 32a, 32b, 320a, 320b: diagonal material 32c, 320c: Horizontal material

Claims

1. A pier supporting a bridge deck, Three stakes arranged at positions that become the vertices of a triangle in a plane; a brace between each pair of adjacent piles; Equipped with The brace has diagonal members and horizontal members that are inclined in different directions, The diagonal members are arranged in a triangular wave shape along the vertical direction, and the diagonal members inclined in different directions do not intersect at their intermediate portions, All of the horizontal members of the brace are provided at heights corresponding to all of the alternate vertices of the triangular waves that continue in a zigzag pattern, and the horizontal members are not provided at heights corresponding to the other vertices, A pier characterized in that the braces are provided between all sets of piles at a position lower than the top of each pile, and the braces between all sets of piles are arranged in the same manner when viewed from the side from outside the triangle formed by the three piles in a plan view.

2. A bridge having a pier and a floor portion supported by the pier, The pier is Three stakes arranged at positions that become the vertices of a triangle in a plane; a brace between each pair of adjacent piles; Equipped with The brace has diagonal members and horizontal members that are inclined in different directions, The diagonal members are arranged in a triangular wave shape along the vertical direction, and the diagonal members inclined in different directions do not intersect at their intermediate portions, All of the horizontal members of the brace are provided at heights corresponding to all of the alternate vertices of the triangular waves that continue in a zigzag pattern, and the horizontal members are not provided at heights corresponding to the other vertices, A bridge characterized in that the braces are provided between all sets of piles at a position lower than the top of each pile, and the braces between all sets of piles are arranged in the same manner when viewed from the side from outside the triangle formed by the three piles in a plan view.

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