JP5835110B2 - Quay-quake-proof structure and quake-quake-proof reinforcement method - Google Patents

Description

  The present invention relates to a quay quake-proof structure and a quay quake-proof reinforcement method that are constructed on a quay or a revetment using a tie rod type sheet pile structure.

2. Description of the Related Art Conventionally, for example, quay walls and revetments where gantry cranes are installed are known to be constructed with a tie rod type sheet pile structure.
In such a quay or the like, as shown in FIG. 7, a steel sheet pile is driven into the ground on the sea side, and a coping 22 is placed on the head of the sea side steel sheet pile 21, and further from the sea side steel sheet pile 21 to the land. A backup work 23 such as a steel sheet pile, a pile, or a concrete board is constructed with a gap on the side, and the upper ends of the coping 22 and the backup work 23 are connected by a tie rod 24.

  And when the quay which consists of a tie rod type sheet pile structure is a soft ground, in order to suppress the deformation of the quay which arises by an earthquake, the soft ground between the sea side steel sheet pile 21 and the preparatory work 23 is sand compaction, for example. Reinforcement for applying ground improvement (region 100 in FIG. 7) such as pile, deep layer mixing treatment, or chemical injection is performed (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2002-4241

However, in the quay reinforced structure composed of the conventional tie rod type sheet pile structure, the ground improvement to be constructed is expanded to the sea side steel sheet pile and the vicinity of the lower end of the laying work, and further to the land side than the laying work. It is constructed in the range. Therefore, since the ground improvement range is wide and deep, the construction cost is high and the construction period is prolonged. Therefore, when a crane installed on the quay is operating, there is a restriction that the operation of the crane is suspended during the reinforcement work.
Moreover, it is difficult to improve the ground below the crane foundation by using a general construction method.For example, it is necessary to adopt a special method such as providing a horizontal hole toward the ground below the crane foundation. Construction costs and construction periods were required, and there was room for improvement in that respect.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a quay quake-proof structure and a quay-quake quake-proof reinforcement method capable of reducing the construction cost and construction period with a simple earthquake-proof reinforcement structure. .

In order to achieve the above object, in the quay-side seismic structure according to the present invention, the upper end portion of the sea side steel sheet pile or a coping joined to the upper portion thereof and a laying side provided on the land side of the sea side steel sheet pile A quay quake-resistant structure used for quay or revetment of tie rod type sheet pile structure that is connected to each other by tie rods, and a solidified body having shear rigidity is provided at a predetermined thickness along the ground surface between the coping and the preparatory work The solidified body is constructed by filling or ground improvement, and is continuously provided for coping and laying work, and the solidified body is connected to the seaside end portion connected to the coping and the land side connected to the laying work. It is characterized in that the cross-sectional area of at least one of the end portions is formed to be large .

Moreover, in the quay quake-proof reinforcement method according to the present invention, the upper ends of the coping bonded to the upper part of the sea side steel sheet pile or the upper part thereof and the preparatory work provided on the land side from the sea side steel sheet pile are formed by tie rods. A seismic reinforcement method for seismic reinforcement of a connected tie rod type sheet pile structure quay or revetment. Provided with a predetermined thickness along the ground surface between the copier and the coping and the copier, continuously provided , the solidified body connected to the sea end connected to the coping and the copier The land-side end portion is formed so that the cross-sectional area of at least one end portion is increased .

  In the present invention, the solidified body provided along the ground surface between the coping and the preparatory work, the sea side steel sheet pile to which the coping is joined, and the preparatory work are continuously provided, and the gate type having excellent earthquake resistance. A structure is formed. That is, in the ground surface portion of the quay or revetment (hereinafter referred to as a quay), the sea side steel sheet pile and the substructure are given a tensile force by the tie rods, and a compression force is given by the solidified body. Thus, by restraining the upper end of the quay of the tie rod type sheet pile structure or the like with the solidified body, deformation of the quay or the like can be suppressed, and liquefaction can be suppressed due to the effect of suppressing shear deformation of the soft ground.

And according to the quay quake-proof structure of the present invention, the construction range of the solidified body is only a portion along the ground surface between the coping and the preparatory work, so the ground improvement over the entire area around the sea side steel sheet pile and the preparatory work Compared with the conventional method of applying the method, it is possible to narrow the construction range in the plane direction, and the construction depth can be reduced. Therefore, the construction is simplified, and the construction cost and the construction period can be reduced. In addition, for example, when a crane is installed on a quay or the like, restrictions during operation can be suppressed, and the suspension period of the crane can be shortened.
Moreover, according to the quay quake-proof structure of this invention, there exists an advantage that the constructed solid body itself can be functioned as pavement.
Further, it is possible to construct a solidified body on an existing quay or the like, and it is possible to adopt this structure on a new quay or the like.

Further, in the quay quake-proof structure according to the present invention, for example, in a preparatory work in which steel sheet piles and the like are continuously arranged in one direction, when the contact surface between the steel sheet pile and the solidified body is small, or coping and solidified body If the contact surface is small, solid material, that is formed as the cross-sectional area of at least one end of the land-side end portion connected to the sea side end and refrain Engineering connecting to coping increases .

  In this case, since the contact area of the solidified body with respect to the coping or preparatory work increases, the horizontal transmission force acting between the solidified body and the structure can be increased.

  Moreover, in the quay quake-proof structure which concerns on this invention, it is more preferable that the enlargement member joined to an upper end part is provided in the preparatory work, and the expansion member and the solidified body are integrally connected.

  In this case, since the solidified body and the preparatory work are joined via the expanding member, the contact area with the solidified body is increased, and the horizontal transmission force acting between the solidified body and the preparatory work is increased. Can be made.

  Moreover, in the quay quake-proof structure which concerns on this invention, it is more preferable that the solidified body is integrally connected by the connection material with respect to at least one of a coping and a preparatory work.

  In the present invention, for example, the solidified body can be more firmly connected to a structure made of coping or preparatory work by a connecting material such as a stud or a wire (rebar). In this case, it is particularly effective when the contact area between the solidified body and the structure is small, and the integrity between the solidified body and the structure can be improved without performing construction for increasing the contact area.

  Moreover, in the quay quake-proof structure which concerns on this invention, it is preferable that the structure foundation is provided in ground surface parts, such as a quay, and the solidified body is integrally provided with respect to the structure foundation.

  As a result, since the solidified body and a structure foundation such as a crane foundation are integrally provided, the solidified body including the structure foundation, the sea side steel sheet pile joined with the coping, and the construction work are continuously provided. Therefore, it is possible to form a portal structure with excellent earthquake resistance.

  Moreover, in the quay quake-proof structure which concerns on this invention, it is preferable that the solidified body is integrally connected with the structure foundation by the connection material.

  Thereby, a solidified body and a structure foundation can be connected more firmly, for example with connecting materials, such as a stud and a money (rebar). In this case, it is particularly effective when the contact area between the solidified body and the structure foundation is small, and the integrity of the solidified body and the structure foundation can be improved without performing construction to increase the contact area.

  Moreover, in the quay quake-proof structure which concerns on this invention, it is preferable that the solidified body is provided in the part shallower than a tie rod.

  In this case, since the solidified body is constructed in a shallow depth range, the workability can be improved and the construction cost can be suppressed.

  Moreover, in the quay quake-proof structure which concerns on this invention, apron parts, such as a quay, are paved, and it is also possible to provide a solidified body under the pavement part.

  In the present invention, even when an apron portion such as an existing quay is paved, it is possible to provide a solidified body with a predetermined thickness along the lower surface of the paved portion without removing the paved portion. With this, the solidified body, the sea-side steel sheet pile joined with the coping, and the preparatory work are continuously provided, and a portal structure having excellent earthquake resistance can be formed.

  According to the quay quake-proof structure and the quay quake-proof reinforcement method of the present invention, a solidified body having a predetermined thickness is provided only at a portion along the ground surface, and the solidified body and the upper end portion of the coping and coping work are continuously provided. By simple earthquake-proof reinforcement, it is possible to construct a tie rod-type sheet pile structure having a portal structure with excellent earthquake resistance, and to reduce the construction cost and construction period.

It is a longitudinal cross-sectional view which shows the quayside earthquake-resistant structure by the 1st Embodiment of this invention. It is a figure which shows the deformation | transformation analysis result of the quay quake-proof structure by this 1st Embodiment. It is a figure which shows the deformation | transformation analysis result by a comparative example, Comprising: (a) is a figure in the case of unreinforced, (b) is a figure in the case of performing the conventional ground improvement. It is a perspective view which shows a part of quayside earthquake-resistant structure by 2nd Embodiment. It is a perspective view which shows a part of quayside earthquake-resistant structure by 3rd Embodiment. It is a perspective view which shows a part of quayside earthquake-proof structure by 4th Embodiment. It is a longitudinal cross-sectional view which shows the quay reinforced by the conventional ground improvement.

  Hereinafter, a quay quake-proof structure and a quay quake-proof reinforcement method according to embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the quay quake-resistant structure 1 according to the first embodiment has quake-proof reinforcement applied to the quay 2 of an existing tie rod type sheet pile structure provided on a soft ground G that is liable to liquefy. Structure.

  The existing quay 2 is in operation and a mobile gantry crane (crane 3) is installed, and a rail for movement (not shown) that supports the pair of columns 3a of the crane 3 is an extension of the quay 2 It is laid almost parallel along. And this rail is laid on the crane foundation 31 (structure foundation) embed | buried under the soft ground G. FIG. The crane foundation 31 (31A, 31B) is a reinforced concrete structure provided at the upper end of the pile 32.

Further, the existing quay 2 is composed of a sea side steel sheet pile 21 provided along an extension line of the quay 2 and a coping 22 made of a cap concrete made by winding and joining the upper end of the sea side steel sheet pile 21. A land-side steel sheet pile 23 (preparation work) placed in the soft ground G with an interval on the land side with respect to the sea-side steel sheet pile 21, a coping 22 and an upper end portion of the land-side steel sheet pile 23 And a tie rod 24 for connecting the two. Crane foundations 31 </ b> A and 31 </ b> B provided on the sea side and the land side are disposed between the sea side steel sheet pile 21 and the land side steel sheet pile 23. The land-side steel sheet pile 23 is arranged in parallel with the sea-side steel sheet pile 21 having an upper end 23 a embedded in the soft ground G and provided in a wall shape.
A plurality of tie rods 24 are arranged at intervals along the extension line of the quay wall 2, and are arranged at a predetermined depth from the ground surface Ga.

On the existing quay 2, a solidified body 25 having shear rigidity is provided with a predetermined thickness along the ground surface Ga between the coping 22 and the land-side steel sheet pile 23.
The solidified body 25 is constructed by replacement or filling and ground improvement, and is continuously provided to the coping 22 and the land-side steel sheet pile 23. The solidified body 25 is a certain amount of shear, such as ordinary concrete, hydrated solidified body (steel slag), steel slag (slag consolidated by aging), ground improvement (shallow layer mixing process, deep layer mixing process, chemical solution injection, etc.) A material that solidifies with rigidity is used. In addition, reinforced concrete, fiber concrete, and lightweight concrete may be used. It is also possible to use a composite material in which these materials are arranged in two layers.

  The thickness dimension of the solidified body 25 is preferably set to be shallower than the tie rod 24, but can be determined from the layer thickness of the soft ground G. Therefore, the solidified body 25 can be applied to a deep position so as to include the tie rod 24.

  The solidified body 25 is desirably integrated with the crane foundations 31A and 31B provided on the sea side and the land side, and has a size equal to or less than the same thickness from the construction surface, and the lower side of the crane foundations 31A and 31B. In the configuration, the solidified body 25 is not formed.

  Moreover, the solidified body 25 has the increase part 25a from which the cross-sectional area becomes large gradually expanding below toward the land side in the land side steel sheet pile 23 side (land side edge part). This increase part 25a is connected to the upper end part 23b of the land side steel sheet pile 23, and the contact area with respect to the land side steel sheet pile 23 of the solidified body 25 is enlarged by providing the increase part 25a, and the integrity is improved.

  In addition, when the coping 22 and the sea-side crane foundation 31A, or the land-side steel sheet pile 23 and the land-side crane foundation 31B are structurally joined, or in a substantially coupled state, the coupling It is possible to omit the solidified body 25 at the location. The “substantially coupled state” refers to a state in which, for example, both gaps are narrow and horizontal loads can be transmitted to each other.

  Such a quay quake-resistant structure 1 is constructed by replacing or filling the solidified body 25 having shear rigidity in the existing quay 2 by filling or ground improvement, and along the ground surface Ga between the coping 22 and the land-side steel sheet pile 23. It is constructed so as to be provided continuously with respect to the coping 22 and the land-side steel sheet pile 23. At this time, in the case of ground improvement, for example, in the case of ground improvement, the solidified body 25 is to solidify the ground by inserting the injection pipe of the ground improvement device into the target ground by the agitation method. Will be created.

Next, the effect | action of the quayside earthquake-resistant structure 1 mentioned above is demonstrated in detail using drawing.
As shown in FIG. 1, in the quay quake-resistant structure 1, the solidified body 25 provided along the ground surface Ga between the coping 22 and the land side steel sheet pile 23, the sea side steel sheet pile 21 which joined the coping 22, The land-side steel sheet pile 23 is continuously provided, and a portal structure having excellent earthquake resistance is formed.
That is, in the ground surface Ga portion of the quay 2, the sea side steel sheet pile 21 and the land side steel sheet pile 23 are given a tensile force by the tie rod 24, and a compression force is given by the solidified body 25. In this way, by restraining the upper end portion of the quay wall 2 of the tie rod type sheet pile structure with the solidified body 25, the deformation of the quay wall 2 can be suppressed and the liquefaction can be suppressed by the effect of suppressing the shear deformation of the soft ground G. .

Here, the effect of the quayside earthquake resistant structure 1 of this Embodiment at the time of an earthquake occurrence is demonstrated based on FIG.2 and FIG.3.
FIG. 2 shows the deformation at the time of earthquake occurrence of the quay 2 in the quay quake-resistant structure 1 of the soft ground G of the present embodiment, and the solid line in the figure is a state before the deformation occurs. The dotted line is the analysis result showing the deformation during the earthquake. 3 is a comparative example, FIG. 3 (a) shows the deformation of the unreinforced quay wall structure 10A, and FIG. 3 (b) shows the quay wall reinforcement structure 10B (that is, the sea improvement area) with a wide ground improvement range. It is the analysis result which showed the deformation | transformation of the conventional construction method which made the surrounding area of the side steel sheet pile 21 and the land side steel sheet pile 23 the improvement range. The analysis conditions (earthquake magnitude) were all the same.

  The deformation in the quay quake-resistant structure 1 of the present embodiment shown in FIG. 2 is almost the same as the deformation of the quay wall reinforcement structure 10B by the conventional method shown in FIG. 3 (b), and is not reinforced as shown in FIG. 3 (a). It can be confirmed that the shear deformation of the soft ground G is suppressed and the deformation of the quay 2 is also suppressed as compared with the quay structure 10A. That is, in the unreinforced quay wall structure 10A shown in FIG. 3A, the sea side steel sheet pile 21 and the coping 22 are greatly deformed to the sea side, which indicates that there is a high possibility that the quay wall 2 will collapse. On the other hand, when the reinforcement shown in FIG. 2 and FIG. 3B is applied, it can be seen that the amount of displacement of the sea side steel sheet pile 21 and the coping 22 to the sea side is suppressed. And in the quay quake-proof structure 1 of this Embodiment, the solidified body 25 is provided in the range of the predetermined thickness along the ground surface Ga, and the portal type structure made to continue the coping 22 and the land side steel sheet pile 23 is formed. Thus, it can be confirmed that the reinforcing effect (seismic performance) is almost equal to that of the quay wall reinforcing structure 10B shown in FIG.

And as shown in FIG. 1, according to the quayside earthquake-resistant structure 1 of this Embodiment, the construction range of the solidified body 25 is only a part along the ground surface Ga between the coping 22 and the land-side steel sheet pile 23. As a result, the construction range in the plane direction can be made narrower and the construction depth can be made shallower than in the conventional construction method in which the ground is improved over the entire area around the sea side steel sheet pile 21 and the land side steel sheet pile 23. . Therefore, the construction is simplified, and the construction cost and the construction period can be reduced. In particular, in the present embodiment, since the solidified body 25 is constructed in a shallow depth range in the upper part of the tie rod 24, the workability can be improved and the construction cost can be suppressed.
In addition, when the crane 3 is installed on the quay 2 as in the present embodiment, restrictions during operation can be suppressed, and the suspension period of the crane 3 can be shortened.
And there exists an advantage that the constructed solidified body 25 itself can be functioned as pavement.

Moreover, since the contact area with respect to the land side steel sheet pile 23 in the solidified body 25 becomes large by forming the increase part 25a from which the cross-sectional area of the land side edge part of the solidified body 25 becomes large, the solidified body 25 and the land side steel sheet pile are increased. The transmission force in the horizontal direction acting between the two can be increased.
Furthermore, since the solidified body 25 and the crane foundations 31A, 31B are integrally provided on the ground surface portion of the quay 2, the solidified body 25 including the crane foundations 31A, 31B and the sea side steel sheet pile 21 joined with the coping 22 are provided. The land-side steel sheet pile 23 is continuously provided, and a portal structure having excellent earthquake resistance can be formed.

  In the quay quake-proof structure and the quay quake-proof reinforcement method according to the above-described embodiment, the solidified body 25 having a predetermined thickness is provided only on the portion along the ground surface Ga. By simple seismic reinforcement such as providing the upper end portion 23b continuously, a tie rod type sheet pile structure having a portal structure with excellent seismic resistance can be constructed, and the construction cost and construction period can be reduced.

  Next, other embodiments of the quay quake-proof structure and the quay quake-proof reinforcement method of the present invention will be described based on the attached drawings, but the same or similar members and parts as those of the first embodiment described above are the same. Description will be omitted using the reference numeral, and a configuration different from that of the first embodiment will be described.

(Second Embodiment)
As shown in FIG. 4, in the quay quake-proof structure 1A according to the second embodiment, a reinforced concrete structure expansion member 26 is joined to the upper end portion 23b of the land-side steel sheet pile 23, and the expansion member 26 and the solidified body 25 are connected to each other. Connected together. The expansion member 26 embeds the upper end portion 23 b of the land-side steel sheet pile 23, and the thickness dimension is equal to the thickness of the solidified body 25. That is, the sea side surface of the expansion member 26 is connected to the solidified body 25. In addition, as a material of the expansion member 26, it is not limited to being a reinforced concrete structure, You may increase a contact area with a structure with steel materials (H steel).
Also in this case, since the solidified body 25 and the land-side steel sheet pile 23 are joined via the expansion member 26 as in the first embodiment, the contact area with the solidified body 25 increases, and the solidified body. The transmission force in the horizontal direction that acts between 25 and the land-side steel sheet pile 23 can be increased.

(Third embodiment)
As shown in FIG. 5, the quay quake-resistant structure 1 </ b> B according to the third embodiment is such that the expansion member 26 and the solidified body 25 of the second embodiment described above are connected by a connecting material 27 such as a stud or a pad (rebar). It has a joined structure. At this time, the number and length of the connecting material 27 can be arbitrarily set.
In this case, the solidified body 25 and the expansion member 26 can be more firmly connected by the connecting member 27, and particularly effective when the contact area between the solidified body 25 and the land-side steel sheet pile 23 is small. Therefore, the integrity of the solidified body 25 and the expanding member 26 can be improved without performing construction to increase the amount.

(Fourth embodiment)
As shown in FIG. 6, in the quay quake-proof structure 1C according to the fourth embodiment, the increased portion 25a and the land-side steel sheet pile 23 of the first embodiment described above are connected materials such as studs and inserts (rebars). 27 is joined.
In 4th Embodiment, the increase part 25a of the solidified body 25 and the land side steel sheet pile 23 can be more firmly connected by the connection material 27. FIG.

As mentioned above, although the embodiment of the quay quake-proof structure and the quay quake-proof reinforcement method by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably. .
For example, in the above-described embodiment, the increasing portion 25a formed so that the cross-sectional area is increased only at the land-side end portion of the solidified body 25 is increased, but the cross-sectional area of the sea-side end portion of the solidified body 25 is increased. You may make it form, and it is good also as a structure which provides the increase part 25a in both a sea side edge part and a land side edge part. Further, the shape and size of the increasing portion 25a are not limited to the present embodiment, and can be set to an appropriate shape.

  Furthermore, in the second embodiment and the third embodiment, the solidified body 25 is integrally connected to the land-side steel sheet pile 23 (enlarged member 26) by the connecting material 27. However, the present invention is not limited to this, and the sea side end of the solidified body 25 and the coping 22 may be connected by the connecting material 27, and the crane foundations 31 </ b> A and 31 </ b> B and the solidified body 25 may be integrally connected by the connecting material 27. It is good also as a structure to be made.

  Furthermore, it is good also as a quay-quake-proof structure where the apron part of the quay 2 is paved, and the solidified body 25 mentioned above is provided under the pavement. In this case, for example, a method of inserting a casing from a distance toward the lower side of the pavement part to perform improvement or injection can be adopted, and the predetermined thickness is provided along the lower surface of the pavement part without removing the pavement part. A solidified body 25 can be provided. Thereby, the sea side steel sheet pile 21 which joined the solidified body 25, the coping 22, and the land side steel sheet pile 23 are provided continuously, and the portal type structure excellent in earthquake resistance can be formed.

  Moreover, although the crane 3 is provided on the quay 2 in the present embodiment, it may be a quay where the crane 3 (crane foundation 31) is not installed. And it is not limited to the crane foundation 31, For example, the foundation (structure foundation) of buildings, such as a warehouse, may be sufficient, and there is no restriction | limiting in particular also about the shape and dimension of a foundation. For example, in the present embodiment, the thickness dimension of the crane foundation 31 and the thickness dimension of the solidified body 25 are substantially equal, but the present invention is not limited to this, and the thickness dimension of the solidified body 25 is the crane foundation. The size may be smaller than 31 or larger. In short, it is only necessary that the structure foundation and the solidified body are integrally connected to each other.

  Moreover, although the land side steel sheet pile 23 is employ | adopted as a backup work in this Embodiment, it is not limited to this, For example, a backup work, such as a pile and a concrete board, may be sufficient.

Furthermore, although the present embodiment shows an example in which the solidified body 25 is constructed and reinforced for the existing quay 2, the quay quake-resistant structure of the present invention is not limited to the existing quay, It is also possible to adopt the main quay quake-proof structure for the quay.
Moreover, the quay-quake-proof structure 1 according to the present invention is not limited to the quay 2 and may be a revetment.

  Furthermore, in the present embodiment, the tie rod 24 is wound and connected to the coping 22, but the tie rod 24 is not limited to the quay configured as described above, and the tie rod 24 is connected to the sea side steel sheet pile 21 and the land side steel. A quay connecting the sheet pile 23 may be used.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

1, 1A, 1B, 1C Quay-earthquake-resistant structure 2 Quay 3 Crane 21 Sea side sheet pile 22 Coping 23 Land side sheet pile (preparation work)
23b Upper end part 24 Tie rod 25 Solidified body 25a Increasing part 26 Enlarging member 27 Connecting material 31, 31A, 31B Crane foundation (structure foundation)
G Soft ground Ga Ground surface

Claims (8)

Wharf or revetment of tie rod type sheet pile structure in which the upper ends of the coping joined to the upper part of the sea side steel sheet pile or the upper part thereof and the preparatory work provided on the land side of the sea side steel sheet pile are connected by a tie rod Quay quake-resistant structure used for
A solidified body is provided at a predetermined thickness along the ground surface between the coping and the preparatory work,
The solidified body is constructed by replacement or filling, ground improvement, and is continuously provided for the coping and preparatory work ,
The quay is characterized in that the solidified body is formed such that a cross-sectional area of at least one of a sea side end connected to the coping and a land side end connected to the preparatory work is increased. Seismic structure. The preparatory work is provided with an enlarged member to be joined to the upper end,
The quay quake-proof structure according to claim 1 , wherein the expansion member and the solidified body are connected by surface contact.   2. The quay quake-proof structure according to claim 1, wherein the solidified body is integrally connected to at least one of the coping and the preparatory work by a connecting material. On the surface part of the quay or revetment, a structure foundation is provided,
The quay quake-proof structure according to any one of claims 1 to 3 , wherein the solidified body is provided integrally with the structure foundation. The quay quake-proof structure according to claim 4 , wherein the solidified body is integrally connected to the structure foundation by a connecting material. The solid material, quay seismic structure according to any one of claims 1 to 5, characterized in that provided in the shallow portion of the depth than the tie rod. The apron part of the quay or revetment is paved,
The quay quake-proof structure according to any one of claims 1 to 6 , wherein the solidified body is provided below the pavement. Wharf or revetment of tie rod type sheet pile structure in which the upper ends of the coping joined to the upper part of the sea side steel sheet pile or the upper part thereof and the preparatory work provided on the land side of the sea side steel sheet pile are connected by a tie rod A seismic reinforcement method for quay walls for seismic reinforcement,
In the existing quay or revetment, a solidified body is constructed by replacement or filling, ground improvement, and is provided with a predetermined thickness along the ground surface between the coping and the preparatory work. Provided continuously ,
The solidified body is formed so that a cross-sectional area of at least one of a sea-side end connected to the coping and a land-side end connected to the preparatory work is increased. Quay wall seismic reinforcement method.

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