JP3350694B2 - Connection structure of pile type pier with earth retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a pile-type pier and an earth retaining wall which is not damaged by horizontal force acting from an earth retaining wall via a slab during an earthquake.

[0002]

2. Description of the Related Art Conventionally, a pile-type pier comprising a substructure made of piles such as steel pipes and a superstructure supported thereon has been proposed.
It has a connecting structure that interposes a bridge that restricts horizontal movement between the superstructure, the adjacent edge of the revetment and the earth retaining revetment.

[0003]

In such a conventional pile connection structure of a pile type pier, a caisson or other concrete structure is used for the earth retaining seawall, and in the event of an earthquake, the ground in the horizontal direction of the ground behind the earth retaining sea wall is used. Earth pressure acts directly on earth retaining walls. On the other hand, the pile-type pier is a pile whose substructure is embedded in the seabed, so that the horizontal vibration during an earthquake has a different phase and amplitude from that of the earth retaining wall. The bridge between the pile-type pier and the earth retaining wall uses a bridge that restricts horizontal movement.

[0004] For this reason, in the conventional connection structure, even if the earthquake is large enough not to be destroyed by the vibration of the pier itself,
If the soil revetment moves horizontally, there is a problem that horizontal force from the soil revetment acts on the pier via the crossover and destroys the pier itself.

The present invention has been made in view of such a conventional problem,
The purpose of the present invention is to provide a connection structure between a pile-type pier and an earth retaining wall where the pier is not damaged even if the vibration of the pier alone does not cause damage even if the vibration of the pier alone does not cause damage.

[0006]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
Supported by a substructure consisting of a number of piles supported on the sea floor,
A pile-type pier with a superstructure having a slab on the upper surface, and a bridge between the pier and an adjacent earth retaining revetment, and a bridge is supported, and one end of the bridge is fixed or placed on the superstructure and supported. In the connection structure of the pile type pier and the earth retaining revetment in which the other end of the transversal slab is movably supported with respect to the earth retaining revetment, a recess in which the other end side of the transversal fitting fits on the upper surface of the soil retaining revetment The other end of the transfer plate is accommodated in the concave portion, and the end of the transfer plate on the transfer plate front end side is formed as an inclined surface, and the leading end of the transfer plate is parallel to the upward inclined surface.
The slope is downward, and a synthetic resin material
Interposed a low friction coefficient sliding material
When a large horizontal movement occurs, the leading end of the transfer plate is
Abutting against the end of the transfer plate,
That is , it is lifted along the slope of the end .

The other end of the transfer plate is connected to the lower surface thereof and the earth retaining wall via a rubbery elasto-plastic material having a smaller strength than the superstructure of the pier, so that the other end of the transfer plate is connected to the earth retaining plate. The rubber-like elastic-plastic material is damaged when the earth retaining seawall moves horizontally largely, and the crossover is moved.
It becomes free to move, and horizontal force acts on the pile-type pier from the soil revetment.
It is preferable that it is not lost.

Another feature of the present invention is that a pile-type pier supported by a substructure consisting of a number of piles supported on the seabed and has an upper structure having a slab on an upper surface, and a pier adjacent to the pier. A bridge is bridged between the revetment and the bridge, one end of the bridge is fixed or placed on the superstructure and supported, and the other end of the bridge is movably supported with respect to the earth retaining seawall. In the connecting structure of the pile type pier and the earth retaining wall, a concave portion is provided on the upper surface of the earth retaining wall so that the other end of the transfer plate fits therein. A space is provided on the plate tip side, and a fluid solid material such as sand is accommodated in the space,
By connecting the other end of the transfer plate with the lower surface and the earth retaining seawall via a rubbery elastoplastic material having a smaller strength than the superstructure of the pier, the other end of the transfer plate is connected to the earth retaining seawall. The rubber-like elasto-plastic material is damaged when the earth retaining seawall moves largely horizontally, so that the crossover becomes free to move.
The horizontal force is no longer applied to the pile-type pier from the soil revetment .

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIGS. 1 and 2 show a first embodiment of the present invention. In the drawings, reference numeral 1 denotes a shore embankment, and 2 denotes a pile-type pier constructed parallel to the shore embankment 1.

The pier 2 comprises a substructure 5 composed of a number of steel pipe piles 4 embedded in the underwater ground 3, and an upper structure 8 composed of a horizontal beam 6 and a slab 7 connecting the upper ends of the steel pipe piles 4. ing.

[0012] Between the earth retaining bank 1 and the superstructure 8, there is
Has been passed over. The passed version 9, whereas the side edge portion or one
The end side is fixed to the superstructure 8, and the other side edge, that is, the other end side , is inserted into the concave portion 10 provided on the pier side of the upper surface of the earth retaining bank 1. The height is almost the same.

The rising portion 11 of the concave portion 10 on the side of the edge of the transfer plate, that is, the end of the transfer plate front end , is inclined upward, and the transfer plate edge end face 12 opposite to this, that is, the front end of the transfer plate is parallel to this. It is inclined to become.

The upper surface of the concave portion 10 and the rising portion 11
A sliding material 13 made of Teflon material (registered trademark) or another synthetic resin material having a small coefficient of friction is interposed between the lower surface and the edge end surface 12 of the transfer plate 9 which is in contact with or is opposed to these. ing.

In this embodiment, since the transfer plate 9 is movable within the recess 10, if vibration occurs between the pier 2 and the earth retaining bank 1 during a small earthquake, the transfer plate 9 passes through the recess 10. 9 moves to absorb vibration, and when a large horizontal movement occurs on the earth retaining wall 1, the edge end face 12 of the transfer plate abuts against the rising portion 11 of the concave portion 10 and is lifted along the slope. This prevents the pier 2 from being damaged.

As shown in FIGS. 3 and 4, a rubber-like elasto-plastic material 15 having a lower strength than the superstructure of the pier is interposed between the upper surface of the concave portion 10 and the lower surface of the edge of the transfer plate 9, In this case, the vibration between the pier and the earth retaining wall within the elastic deformation of the rubber-like elastic-plastic material 15 may be temporarily fixed.
Absorb This fifth variant, the more when the horizontal movement of magnitude occurs, rubbery elastic-plastic material 15 is plastically deformed or destroyed moves passed version 9, pier 2 a corruption You may make it prevent.

Further, in this case, it may be a gradient structure of the rising portion 11 and the Doban edge end surface 12 as shown in FIG. 4, an example as well as Teflon material is also shown in FIG. 2 in this case
(Registered trademark) A sliding material 13 made of another synthetic resin material and having a small friction coefficient is interposed.

The pier side edge of the transfer plate 9 may be fixed to the pier 2 or may be placed so as not to move horizontally.

FIGS. 5 and 6 show another embodiment of the present invention. In this embodiment, a concave portion 10 is formed widely and a sand 1 is formed therein.
4 so that the sand 14 can be pushed away and the slab 9 can move greatly when the earth retaining wall 1 moves horizontally. Also in this case, similarly to the embodiment shown in FIGS. 3 and 4, between the upper surface of the concave portion 10 and the lower surface of the edge of the transfer plate 9, a rubber-like elastic-plastic material 15 having lower strength than the superstructure of the pier is provided.
May be temporarily fixed, and in this case, the vibration between the pier and the earth retaining wall within the elastic deformation of the rubber-like elastic-plastic material 15 is absorbed by the deformation of the rubber-like elastic-plastic material 15. If the horizontal movement is larger than that, the rubber-like elastic-plastic material 15 is plastically deformed or destroyed, and
There moved, so as to prevent the breakage pier 2.

[0020]

As described above, according to the present invention, the pier side edge of the bridge that is bridged between the upper part of the pier and the shore embankment can be moved horizontally with respect to the shore embankment, and the upper surface of the shore embankment can be moved. A recess in which the other end of the transfer plate is fitted, the other end of the transfer plate is accommodated in the recess, and the end of the transfer plate on the leading end side of the transfer plate is formed as an upwardly inclined surface. A downward slope so as to be parallel to the upward slope, and a low friction coefficient made of a synthetic resin material between the two slopes .
Large horizontal movement is generated on the earth retaining seawall with sliding material interposed.
When the leading edge of the transfer plate hits the transfer plate end
End of the transfer plate, and the end of the transfer plate is inclined.
By so lifted along, even when a large horizontal movement occurs in the earth retaining seawall, not transmitted its movement the pier side, damage to the pier is prevented.

A recess is provided on the upper surface of the earth retaining wall to which the other end of the transfer plate fits, the other end of the transfer plate is accommodated in the recess, and a space is provided at the leading end side of the transfer plate in the recess. A similar effect can be obtained by containing a fluid solid material such as sand in the space.

Furthermore, by temporarily fixing the earth retaining wall and the crossover via a rubbery elastic material smaller than the strength of the superstructure of the pier, the pile-type pier and the earth retaining wall vibrate without interfering with each other. In the case of an earthquake below the damage limit, the pile-type pier and soil revetment will not be damaged, and even if the soil revetment moves significantly horizontally, the rubber-like elastic body installed on the soil revetment will be damaged, and the crossover will be free to move. Therefore, horizontal force does not act on the pile-type pier from the soil revetment via the crossover, and damage to the pile-type pier due to the horizontal movement of the soil revetment is prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a plan view of a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of the same.

FIG. 5 is a plan view of a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 soil retaining seawall 2 pile type pier 3 seabed ground 4 steel pipe pile 5 substructure 6 horizontal beam 7 slab 8 superstructure 9 crossover 10 concave portion 11 rising portion 12 crossover end edge 13 sliding material layer 14 sand 15 rubber-like elastic-plastic material

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomohiro Nakahara 2-1-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Transport Facility Development Corporation (72) Inventor Tatsuo Upper 3-1-1 Nagase, Yokosuka City, Kanagawa Prefecture Within the Technology Research Institute (72) Inventor Hiroshi Oyama 3-16 Hayabusa-cho, Chiyoda-ku, Tokyo Inside the Research Center for Coastal Development Technology (72) Inventor Masaaki Mitoh 15534-1, Go-ku, Nishinasuno-cho, Nasu-gun, Tochigi Prefecture (56) References JP-A-10-183558 (JP, A) JP-A-8-158316 (JP, A) JP-A 56-110106 (JP, U) JP 4-96 48286 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) E02B 3/06

Claims (3)

(57) [Claims] A pile type pier supported by a substructure consisting of a number of piles supported on the sea floor and having an upper structure having a slab on an upper surface, and a crossover between a pier and an adjacent earth retaining bank. Pier, the one end of the pier is fixed or placed on the superstructure and supported, and the other end of the pier is movably supported with respect to the shore. In the connection structure, the other end of the transfer plate is provided with a concave portion on the upper surface of the earth retaining wall, the other end of the transfer plate is accommodated in the concave portion, and the contact end of the transfer plate front end of the concave portion is directed upward. In addition to the inclined surface, the leading end of the transfer plate is flat with the upwardly inclined surface.
A downwardly inclined surface such that the line, if during the both inclined surfaces
A low friction coefficient sliding material made of a synthetic resin material is interposed,
When a large horizontal movement occurs on the earth retaining wall,
Abuts the end of the concave portion on the leading edge side of the transfer plate,
At the end of the transfer plate side, lift up along the slope of the end
The connection structure of the pile-type pier and the earth retaining wall, which is characterized by the following . 2. The other end of the transfer plate is connected to the lower surface and the earth retaining wall with a rubber-like elasto-plastic material having a lower strength than that of the superstructure of the pier. movably is supported against revetment, the earth retaining revetment largely passed version of the rubber-like elastic-plastic material is damaged when the horizontal movement is movement itself
The horizontal force is not applied to the pile-type pier from the soil revetment.
The connection structure of the pile-type pier and the earth retaining embankment according to claim 1 , characterized in that the structure is configured to be made smaller . 3. A pile-type pier supported by a substructure consisting of a number of piles supported on the seabed and having an upper structure having a slab on an upper surface, and a crossover between the pier and an adjacent earth retaining revetment. Pier, the one end of the pier is fixed or placed on the superstructure and supported, and the other end of the pier is movably supported with respect to the shore. In the connection structure with, and provided on the upper surface of the earth retaining wall a recess in which the other end of the transfer plate is fitted, the other end of the transfer plate is accommodated in the recess, and a space is provided on the transfer plate tip side of the recess. A fluid solid material such as sand is accommodated in the space, and the other end side of the bridge is connected between the lower surface and the earth retaining wall with a rubber-like elasto-plastic material having a smaller strength than the superstructure of the pier. In this way, the other end side of the sashimi is movably supported with respect to the soil revetment, and the soil revetment is largely moved horizontally. The rubber-like elastic-plastic material passed version is damaged becomes free movement in the water in the pile type pier from earth retaining seawall
The connection structure of the pile-type pier and the earth retaining wall, which is characterized by the fact that the flat force is not applied .