JP3350455B2 - Method of connecting pile head and pile head member and connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile head treatment for piles such as H steel piles and steel pipe piles, and more particularly to a pile head for driving or embedding into a soil, and a method for covering or inserting a beam. The present invention relates to a connection method and a connection structure with a pile head member having a mouth member.

[0002]

2. Description of the Related Art Conventionally, as a method for connecting a pile head of a pile and a pile head member having a connection member for covering or inserting a beam, a connection method by welding and a method of connecting with a bolt via an attachment plate. , And a connection part of a pile head of a steel pile is surrounded by a pile head member made of hollow metal, and a filling material (agent) of a cement-based material is filled between the pile head member and the steel pile. A method of connecting a pile-making member and a pile head member (see JP-A-8-284159 and JP-A-9-25637) is disclosed.

[0003]

In the above-mentioned connection method by welding, welding is performed by manual welding or automatic welding. In this method, a large amount of soil must be excavated in order to secure a space where welding can be performed, and welding must be performed in a work space opened by the excavated soil.
There has been a problem that the working efficiency is reduced and a large amount of working time is required for the connecting work.

When the pile head treatment of a steel pile is performed by welding,
There was a problem that several hours were required for welding work. For example, when connecting pile head members inside or near the track, it is necessary to perform the connecting work in a short time, such as during the track closing time from the last train when the train does not pass until the first morning of the next morning, the work Time-consuming conventional joining methods cannot be used. In the field where the working time is limited as described above, there is a problem with the conventional connecting method, and it has been required to shorten the pile head processing time of the steel pile.

In the connection method using bolts, an attachment plate or a flange for connection is attached, and the connection is made by bolts. This method has a problem that a large amount of soil must be excavated in order to secure a work space as in welding.

Further, when the pile head treatment of the steel pile is performed by welding or bolts, there is a problem that the work area must be enlarged. For example, the connection work between a steel pile and a pile head member that is driven or built into the soil in or near the track has height and width restrictions, and it is necessary to reduce the amount of soil excavation. Had been.

On the other hand, a filling material (agent) of a cement-based material is filled between a pile head member made of hollow metal having a shape surrounding a connecting portion of a steel pile and a steel pile to connect the pile head member. When connecting pile heads with steel piles driven or buried in the soil, the time required for the filling material to reach the required strength of the steel piles is long. There is a problem that it takes a long time to move to the next step such as returning. Furthermore, a pile head member is enlarged in order to obtain a gap for filling the filling material (agent) of the cement-based material, and the excavation amount is accordingly increased, so that much more work time is required. was there.

[0008] The present invention has been made in view of the above circumstances, and a pile head capable of easily processing the pile head of a steel pile, having good adhesion, and greatly reducing the work time on site. It is intended to provide a connection method and a connection structure of a pile head member.

[0009]

That is, the present invention provides a pile head member having a pile head of a steel pile, a pile head fitting for connecting to the steel pile, and a connection member for attaching a beam. Short time
In the method of integrating and connecting to , the pile head of the steel pile is fitted with a pile head metal of the pile head member or inserted,
The tip of the pile head is brought into contact with the pile head member, and the pile head and the pile head member are
After providing a gap of 0.5 to 10 mm on the facing surface of
Part or all of the gap has a viscosity of 20,000 mPa · s
Fill with the following two-part cold-setting acrylic adhesive
A method for connecting a pile head and a pile head member, wherein the pile head is hardened, fixed and connected and integrated in less than one minute .

The present invention also relates to a connection in which a pile head of a steel pile and a pile head member having a connection member for attaching a pile head metal fitting and a beam to the steel pile are integrally connected. In the structure, the pile head metal of the pile head member is covered with or inserted into the pile head of the steel pile , and the tip end face of the pile head is fitted to the pile head.
Contact with the member, 0.5 to the opposing surface of the pile head and the pile head member
A gap of 10 mm is provided, and a part or all of the gap is provided.
A two-part cold-setting type with a viscosity of 20,000 mPa · s or less
A connection structure for a pile head and a pile head member, which is filled with an acrylic adhesive, cured and fixed in 20 minutes or less, and connected and integrated.

The method of fitting the pile head to the pile head member may be either a method of covering the pile head member with the pile head member, or a method of inserting the pile head member into the pile head and fitting. It is preferable to provide bolts for keeping a constant gap between the pile head and the pile head member.

The viscosity of the adhesive is 20,000 mPa ·
It is preferably at most s.

Preferably, the adhesive is an acrylic adhesive. The acrylic adhesive is cured with a polymerization initiator .
It is preferable to cure by mixing the promoter . In the connection structure, it is preferable that a beam is put on or inserted into the connection member of the pile head member.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a pile head treating method for covering a pile head having a connection member for covering or inserting a beam on a pile head. A method of connecting a pile head and a pile head member, characterized in that a part or all of a gap between the member and the pile head is filled with an adhesive and hardened to be connected and integrated.

[0015] Further, there is provided a connection structure in which a pile head and a pile head member are connected using the above-described connection method, and a beam is attached to the pile head member. The material of the pile is not particularly limited, but is preferably made of steel. The type of pile is not particularly limited, such as a steel pipe pile or an H steel pile, but a steel pipe pile is preferable.

[0016]

Embodiments of the present invention will be described below with reference to the drawings, for example, a steel pipe pile.

Embodiment 1 FIG. 1 is an explanatory view showing one embodiment of a method for connecting a pile head and a pile head member according to the present invention. 1A is a perspective view of a pile head member, and FIG. 1B is a perspective view of a pile head of a steel pipe pile.
(C) is an AA 'line sectional view of the pile head member.

FIG. 2 is an explanatory view showing a connection structure of a pile head and a pile head member connected by the method of FIG. FIG. 2 (a)
FIG. 2B is a perspective view of a connection structure of the pile head member, and FIG. 2B is a partial cross-sectional view of the connection structure of the pile head member, and FIG.
FIG. 3 is a sectional view taken along line BB ′ of the connecting structure.

1 and 2 show a connection method of the present invention in which a pile head member is put on a pile head of a steel pipe pile. As shown in FIG. 1 (a), at a factory or a site, a pile head having a connection member 2 (2a to 2c) for mounting a beam by covering or inserting a beam on a pile head metal fitting 1 for connection to a steel pipe pile. Member 11
Is prepared. The pile head member 11 is provided with a covering portion 13 and a space portion 14 for fitting over the pile head 5 of the steel pipe pile 12.

Further, when the pile head member 11 is fitted over the pile head 5 of the steel pipe pile 12, a gap for filling the adhesive is formed. The gaps are preferably provided at a sufficient interval so that the required adhesive strength is obtained after the filled adhesive is cured. For this purpose, a bolt hole 3 for passing a bolt provided for adjusting the gap may be provided as necessary, and the bolt passing through the bolt hole 3 may be used for temporary fixing until the adhesive is cured.

The pile head member 11 is provided with one or more inlets 4 for injecting an adhesive. FIG. 1B shows the pile head 5 of the steel pipe pile 12. The pile head 5 is cut by a manual or automatic fusing machine to a required length so that the length protruding from the other pile heads becomes the same horizontal line in order to attach a beam.

Next, the steel pipe pile 12 and the pile head member 11 are shown in FIG.
As shown in (a), the pile head 5 of the steel pipe pile 12 is put on the covering part 13 of the pile head member 11 and fitted into the space part 14. FIG.
, The inner diameter Y _d of the covering portion 13 of the pile head member 11
It is because it is larger than the outer diameter X _D of pile head 5 of the steel pipe piles 12, a gap between the pile head member 11 and the pile 5 1
5 are formed.

After the pile head member 11 is put on the pile head 5, the end 18 of the gap 15 between the pile head member 11 and the steel pipe pile 12 is welded.
After sealing with a mortar, concrete, grout, a mastic elastic sealing material, a rubber O-ring or the like to form a seal portion 7, an injection port 4 provided in the pile head member 11.
The gap 6 is filled with the adhesive 6. In this case, gap 1
A hole for bleeding air may be provided for bleeding the air in 5.

The gap 15 between the pile head member 11 and the pile head 5 in the present invention is usually 0.5 to 10 mm, preferably 1 to 6 m.
m is desirable. If it is less than 0.5 mm, the adhesive may not be sufficiently injected to the end portion, and if it exceeds 10 mm, the performance of the adhesive may be extremely reduced.

In the present invention, the viscosity of the injected adhesive is 2
It is preferably at most 000 mPa · s. If the viscosity of the adhesive exceeds 20,000 mPa · s, the injection resistance at the time of injection increases, making it difficult to use a simple applicator or mixer, increasing the size of the apparatus and reducing workability at the site. There is. Also, if the viscosity of the adhesive is 20,
If it exceeds 000 mPa · s, the injection resistance is reduced.
The gap between the pile head member and the steel pipe pile must be widened, and the pile head member becomes large, and the workability at the site may also deteriorate. More preferably the viscosity of the adhesive is
It is 500 to 20,000 mPa · s.

As the adhesive of the present invention, an acrylic adhesive is preferable in that it has good adhesion to the pile head member and the steel pipe pile. The acrylic adhesive is excellent in the following points.

(1) The fixing time is short and the work can be performed in a short time. The fixation time refers to the time from filling the gap to the end of the permanent compression set. By using acrylic adhesive,
A fixing time as short as 20 minutes or less, preferably 3 to 15 minutes at 23 ° C. is obtained. If the time is less than 3 minutes, the space is not sufficiently filled, and if the time is more than 20 minutes, the work may not be performed in a short time. (2) Excellent workability on site. With conventional epoxy and urethane resin adhesives, the amount of adhesive mixed had to be strictly measured and thoroughly mixed, but with the use of acrylic adhesive, the amount of adhesive mixed was strictly measured. This eliminates the need to perform the process, and provides excellent adhesiveness even with simple mixing, facilitating the work of handling the adhesive on site. (3) Since the viscosity is low, the filling property in the gap portion is excellent. With conventional epoxy and urethane resin adhesives, the filling properties were poor because the viscosity was not appropriate, but by using acrylic adhesives, the viscosity of the adhesive could be adjusted appropriately,
The adhesive can be sufficiently filled in the gap.

The acrylic adhesive used in the present invention is:
It refers to an adhesive composed of (meth) acrylate or a mixture thereof, and is preferably used in combination with a polymerization initiator and a curing accelerator in that it cures at room temperature.

Examples of the (meth) acrylate include various monofunctional (meth) acrylates and polyfunctional (meth) acrylates.

Examples of the monofunctional (meth) acrylate include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and isooctyl (meth) acrylate. Acrylate, isodecyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, phenyl (meth) acrylate, cyclohexyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopentenyl (meth) acrylate, isobornyl (Meth) acrylate, methoxylated cyclodecatriene (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2- Droxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, alkyloxy (poly) ethylene glycol mono (Meth) acrylate, alkyloxy (poly) propylene glycol mono (meth) acrylate, phenoxy (poly) ethylene glycol mono (meth) acrylate, phenoxy (poly) propylene glycol mono (meth) acrylate, tetrahydrofurfuryl (meth) acrylate,
2-hydroxy-3-phenoxypropyl (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, glycidyl (meth) acrylate, caprolactone-modified tetrahydrofurfuryl (meth) acrylate, allyl (meth) acrylate, 3-chloro-2 −
Hydroxypropyl (meth) acrylate, N, N-dimethylaminoethyl (meth) acrylate, N, N-diethylaminoethyl (meth) acrylate, t-butylaminoethyl (meth) acrylate, morpholine (meth) acrylate, ethoxycarbonylmethyl ( Meta)
Acrylate, ethylene oxide modified phthalic acid (meth)
Acrylate, ethylene oxide modified succinic acid (meth)
Acrylate, trifluoroethyl (meth) acrylate, tetrafluoropropyl (meth) acrylate and 2
-Hydroxy-3- (meth) acryloxypropyltrimethylammonium chloride and the like.

Examples of the polyfunctional (meth) acrylate include polyethylene glycol di (meth) acrylate,
Polyglycerol di (meth) acrylate, polypropylene glycol di (meth) acrylate, polybutylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neo Examples include pentyl glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and tris (meth) acryloyloxyethyl isocyanurate. These can be used alone or in combination of two or more. or,
In addition, various epoxy (meth) acrylates and the like can be used.

Other components include compounds having an allyl group such as diallyl maleate, diallyl phthalate, triallyl isocyanurate and allyl glycidyl ether, which are radically polymerizable, maleic acid, maleic anhydride and itaconic acid. Unsaturated acids, styrene, divinylbenzene, α-methylstyrene, vinylpyrrolidone, vinylcaprolactam, vinylether, etc. may also be used within a range that does not impair the object of the present invention.

Examples of the polymerization initiator include ketone peroxides such as methyl ethyl ketone peroxide, cyclohexane peroxide, 3,3,5-trimethylcyclohexane peroxide, methylcyclohexane peroxide, methyl acetoacetate peroxide and acetylacetone peroxide; 1,1-bis (tert-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1-bis (tert-butylperoxy) cyclohexane, 2,2-bis (tert-butylperoxy) octane, Peroxyketals such as normal butyl-4,4-bis (tert-butylperoxy) valerate and 2,2-bis (tert-butylperoxy) butane; tert-butyl hydroper Kisaido, cumene hydroperoxide, diisopropylbenzene hydroperoxide, p-menthane hydroperoxide, 2,5
Hydroperoxides such as dimethylhexane-2,5-dihydroperoxide and 1,1,3,3-tetramethylbutyl hydroperoxide, ditertiary butyl peroxide, tertiary butyl cumyl peroxide, dicumyl peroxide , Α, α'-
Bis (tert-butylperoxy-meta-isopropyl) benzene, 2,5-dimethyl-2,5-di (tert-butylperoxide) hexane and 2,5-
Dialkyl peroxides such as dimethyl-2,5-di (tert-butyl peroxide) hexine-3;
Acetyl peroxide, isobutyl peroxide,
Octanoyl peroxide, decanoyl peroxide, laurinoyl peroxide, 3,3,5-trimethylhexanoyl peroxide, succinic acid peroxide, benzoyl peroxide, 2,4
Diacyl peroxides such as dichlorobenzoyl peroxide and meta-toluoyl peroxide, diisopropylperoxydicarbonate, di-2-ethylhexylperoxydicarbonate, dinormalpropylperoxydicarbonate, bis (4-tert-butyl) Cyclohexyl) peroxydicarbonate,
Peroxydicarbonates such as di-2-ethoxyethylperoxydicarbonate, dimethoxyisopropylperoxydicarbonate, di (3-methyl-3-methoxybutyl) peroxydicarbonate and diallylperoxydicarbonate; Tert-butyl peroxyacetate, tert-butyl peroxyisobutyrate, tert-butyl peroxypivalate, tert-butyl peroxydecanoate,
Cumyl peroxy neodecanoate, tertiary butyl peroxy-2-ethyl hexanate, tertiary butyl peroxy-3,3,5-trimethyl hexanate, tertiary butyl peroxy laurate, tertiary butyl peroxy benzoate, Ditertiary butyl peroxyisophthalate, 2,5-dimethyl-
2,5-di (benzoylperoxy) hexane, tertiary butyl peroxymaleic acid, tertiary butyl peroxyisopropyl carbonate, cumyl peroxy octate, tertiary hexyl peroxy neodecane, tertiary hexyl peroxypi Peroxyesters such as valate, tertiary thiol peroxyneohexanate, tertiary hexyl peroxyneohexanate, and cumyl peroxyneohexanate are included.

Other peroxides include, for example, acetylcyclohexylsulfonyl peroxide, tertiary butyl peroxyallyl carbonate and the like.

Examples of the polymerization initiator other than the organic peroxide include azobisisobutyronitrile, 2,2'-azobis (4-methoxy-2,4-dimethylvaleronitrile), and 1,1'-azobis Azonitrile compounds such as (cyclohexane-1-carbonitrile), 1-[(1-cyano-1-methylethyl) azo] formamide and 2-phenylazo-4-methoxy-2,4-dimethylvaleronitrile; Azoamidine compounds such as 2'-azobis (2-methylpropionamidine) dihydrochloride, cyclic azoamidine compounds such as 2,2'-azobis [2- (2-imidazolin-2-yl) propane], 2 , 2'-Azobis {2-methyl-normal- [1,1-bis (hydroxymethyl) -2-hydroxyethyl] propiona And azoamide compounds such as 2,2′-azobis {2-methyl-normal- [1,1-bis (hydroxymethyl) ethyl] propionamide}, and 2,2′-azobis (2,4, 4-
Alkylazo compounds such as trimethylpentane). These can be used alone or in combination of two or more.

Examples of the curing accelerator include thiourea derivatives, amines, condensation products of aldehydes and amines, organic acid salts and organic chelate compounds.

Examples of the thiourea derivative include thioamide compounds such as diethylthiourea, dibutylthiourea, ethylenethiourea, tetramethylthiourea, and mercaptobenzimidazole. Examples of the amines include N, N-dimethyl-P-toluidine, N, N-dimethylaniline, ethylenediamine, and triethanolamine. Examples of the organic acid salt include cobalt naphthenate, copper naphthenate and zinc naphthenate. Examples of the organic chelate compound include copper acetylacetonate, iron acetylacetonate, vanadium acetylacetonate, and cobalt acetylacetonate. These curing accelerators can be used alone or in combination of two or more.

Among the acrylic adhesives, a two-part cold curing acrylic adhesive is preferable because the viscosity can be adjusted low and the injection can be completed in a short time. A two-part cold-setting acrylic adhesive is one in which the acrylic adhesive is divided into two parts, an A part and a B part, and the A part contains at least a polymerization initiator and the B part contains at least a curing accelerator. Say. In the case of the two-part cold-setting acrylic adhesive, the mixing ratio of the A agent and the B agent does not have to be strictly adjusted. This has the effect that work can be easily performed.

In the present invention, by using an acrylic adhesive, the adhesive strength to steel is greater than that of a conventional cement filler, and the connection strength between the pile head and the pile head member of the steel pipe pile is reduced. growing. That is, the cement-based filler has much lower adhesion to iron than the adhesive. In particular, when the member works in the pulling direction, measures such as the use of bolts must be taken, but when an adhesive is used, such measures are not necessary.

Embodiment 2 FIG. 3 is an explanatory view showing another embodiment of a method for connecting a pile head and a pile head member according to the present invention. 3A is a perspective view of a pile head member, FIG. 3B is a perspective view of a pile head of a steel pipe pile, and FIG. 3C is a cross-sectional view of the pile head member taken along line CC ′. is there.

FIG. 4 is an explanatory view showing a connection structure of pile head members connected by the method of FIG. 4A is a perspective view of a connection structure of the pile head member, FIG. 4B is a partial cross-sectional view of the connection structure of the pile head member, and FIG. It is a sectional view taken along line -D '.

FIGS. 3 and 4 show a connection method of the present invention in which a pile head member is inserted into a pile head of a steel pipe pile. As shown in FIG. 3A, a pile head member 1 (2a to 2c) for attaching a beam to a pile head fitting 1 for connection to a steel pipe pile is provided with a steel pipe pile 12. An insertion portion 16 for insertion into the pile head 5 is provided.

Further, when the pile head member 11 is inserted into the pile head 5 of the steel pipe pile 12, a gap for filling the adhesive is provided, and a necessary adhesive strength can be obtained after the filled adhesive is hardened. Preferably, a sufficient gap is provided.

FIG. 3B shows the pile head 5 of the steel pipe pile 12.
This pile head 5 has one injection port 4 for injecting an adhesive.
Or more. If necessary, a bolt hole 3 for passing a bolt 8 provided for adjusting the gap may be provided, and the bolt passing through the bolt hole 3 may be used for temporary fixing until the adhesive is cured.

Next, in the steel pipe pile 12 and the pile head member 11, the insertion portion 16 of the pile head member 11 is inserted into the hollow portion 17 of the pile head 5 of the steel pipe pile 12. The inner diameter X _d of the pile head 5 of the steel pipe pile 12 is
Since it is larger than the outer diameter Y _D of the insertion portion 16 of the pile head member 11, a gap 15 is formed between the pile head 5 and pile head member 11.

Next, as shown in FIG. 4, after sealing the end portion 18 of the gap 15 between the lower end of the pile head member 11 and the steel pipe pile 12 to form a seal portion 7, the seal part 7 is provided on the steel pipe pile 12. Inlet 4
The gap 6 is filled with the adhesive 6. In this case, gap 1
A hole for bleeding air may be provided for bleeding the air in 5.

Next, a specific example of a structure in which a beam is attached to the connection structure in which the pile head and the pile head member are connected in the first and second embodiments will be described below. FIG. 5 is an explanatory view showing one embodiment of a connection structure in which a beam is attached to a connection member of the present invention.

In FIG. 5, the connecting structure and the beam are attached by, for example, a kansashi girder (H) between the connection members 2 of the two connecting structures connecting the steel pipe pile 12 and the pile head member 11.
The beam 20 made of steel is aligned and joined so that the upper surface is horizontal (see FIG. 5A). Next, the connection member 2
An attachment plate 22 is applied to the joint between the beam and the beam 20 and fixed by bolts 21 and attached (see FIG. 5B).

The attachment of the connecting structure and the beam is an example, and other commonly used methods such as a method of covering the beam with the joint member and a method of inserting the beam into the joint member are used. Can be used.

[0050]

As described above, according to the present invention, it is possible to obtain a connection structure that can easily connect a steel pile and a pile head member and has good adhesiveness. In particular, by using an adhesive, it is possible to reduce the size of the pile head metal of the pile head member, reduce the amount of excavation of soil, and shorten the construction time. Also, by using this pile head member as a part of the rigid structure, the beam (reinforcement)
Can also be reduced.

Further, the connection between the steel pile and the pile head member is completed by injecting a quick-curing acrylic adhesive in the on-site construction and curing it at an early stage. Therefore, compared with the conventional method of connecting a steel pile and a pile head member by a welding method or the like, the working efficiency can be improved and the working time can be significantly reduced. Extremely effective.

As described above, in the conventional connecting method, one connecting operation takes several hours or more, but in the method of the present invention, the operating time can be reduced to 30 minutes or less. Become.

Also, by using an acrylic adhesive, particularly a two-part cold curing type acrylic adhesive, the viscosity can be adjusted to be lower than other adhesives, so that the injectability is good and the curing time is short. Connection work between the steel pile and the pile head member can be performed in a short time.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a method for connecting a pile head and a pile head member according to the present invention.

FIG. 2 is an explanatory view showing a connection structure of pile head members connected by the method of FIG. 1;

FIG. 3 is an explanatory view showing another embodiment of a method for connecting a pile head and a pile head member according to the present invention.

FIG. 4 is an explanatory view showing a connection structure of pile head members connected by the method of FIG. 3;

FIG. 5 is an explanatory view showing one embodiment of a connection structure in which a beam is attached to a connection member of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pile head metal fittings 2, 2a, 2b, 2c Connection member 3 Bolt hole 4 Inlet 5 Pile head 6 Adhesive 7 Seal part 8 Bolt 11 Pile head member 12 Steel pipe pile 13 Coating part 14 Space part 15 Gap 16 Insertion part 17 Hollow part 18 End part 20 Beam 21 Bolt 22 Attached plate

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tadashi Ishibashi 2-2-2 Yoyogi, Shibuya-ku, Tokyo East Japan Railway Company (72) Inventor Kimitaka Nishimura 2-2-2 Yoyogi, Shibuya-ku, Tokyo East Japan Railway Company (72) Inventor Yoshihiro Yukizawa 2-2-2 Yoyogi, Shibuya-ku, Tokyo East Japan Railway Company (72) Kozo Sunaga 2-2-2 Yoyogi, Shibuya-ku, Tokyo 2 East Japan Railway Company (72) Inventor Yasuaki Hosokawa 2-2-2 Yoyogi, Shibuya-ku, Tokyo East Japan Railway Company (72) Kenichi Nagayama 2-2-2 Yoyogi, Shibuya-ku, Tokyo No. 2 East Japan Railway Company (72) Inventor Shuji Ishii 2-53-3 Misakicho, Chiyoda-ku, Tokyo Tekkaken Construction Co., Ltd. (72) Invention Person Yoshitaka Komuro 2-5-3 Misaki-cho, Chiyoda-ku, Tokyo Inside Tekkaken Construction Co., Ltd. (72) Inventor Hideya Soma 1135 Nakamura, Shibukawa-shi, Gunma Denki Kagaku Kogyo Co., Ltd. Shibukawa Plant (72) Inventor Minowa Yukata 1135 Nakamura, Shibukawa City, Gunma Prefecture Inside the Shibukawa Plant of Electrochemical Industry Co., Ltd.

Claims (7)

(57) [Claims] 1. A method for connecting and integrating a pile head of a steel pile, a pile head member for connecting to the steel pile and a connection member for attaching a beam in a short time . The pile head metal of the pile head member is put on the pile head of the steel pile, or
Is inserted and mated, and the tip end face of the pile head is
0.5mm to 10mm on the opposing surface of the pile head and the pile head member
After the gap is provided , some or all of the gap has a viscosity of 2
A two-part, room-temperature-curing acrylic of 000 mPa · s or less
A method for connecting a pile head and a pile head member, wherein the pile head is filled with a system adhesive, cured and fixed in less than 20 minutes, and connected and integrated. 2. The method of connecting a pile head and a pile head member according to claim 1, wherein a bolt is provided for maintaining a constant gap between the pile head and the pile head member. 3. The method according to claim 1, wherein the acrylic adhesive is cured by mixing a polymerization initiator and a curing accelerator. 4. The method according to claim 1, wherein an injection port is provided in the pile head member, and an adhesive is injected into the gap from the injection port. 5. The method according to claim 1, wherein the steel pile is a steel pipe pile. 6. A connection structure in which a pile head of a steel pile, a pile head member having a pile head fitting for connecting to the steel pile and a connection member for attaching a beam are integrally connected , Put the pile head metal of the pile head member on the pile head of the steel pile or
Is inserted and mated, and the tip end face of the pile head is
0.5mm to 10mm on the opposing surface of the pile head and the pile head member
A gap is provided, and a part or all of the gap has a viscosity of 20,
2,000 mPa · s or less two-part cold-setting acrylic contact
A connection structure between a pile head and a pile head member, which is filled with an adhesive, cured and fixed in 20 minutes or less, and connected and integrated. 7. The connection structure between a pile head and a pile head member according to claim 6 , wherein a beam is covered or inserted into a connection member of the pile head member.