JP2021143486A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2021143486A5 JP2021143486A5 JP2020041419A JP2020041419A JP2021143486A5 JP 2021143486 A5 JP2021143486 A5 JP 2021143486A5 JP 2020041419 A JP2020041419 A JP 2020041419A JP 2020041419 A JP2020041419 A JP 2020041419A JP 2021143486 A5 JP2021143486 A5 JP 2021143486A5
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- wedge
- connection structure
- structure according
- shaped protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Description
請求項１に係る発明は、側面視及び上面視において互いに対向して離間するコンクリート硬化体の端部と、該コンクリート硬化体の端部に後打ちされる打継ぎコンクリートとの接続構造であって、前記コンクリート硬化体は繊維補強コンクリートから成るとともに、該コンクリート硬化体の端部には、接続軸横断方向に上面視で楔型形状の複数の楔型突出部が一体に形成され、前記楔型突出部は、上面視で接続軸方向へ突出するとともに次第に先細りする形状を有し、該楔型突出部の端部から突出する繊維材が前記打継ぎコンクリートに架橋されることを特徴とする接続構造である。
The invention according to claim 1 is a connection structure between ends of a hardened concrete body that face each other and are separated from each other in a side view and a top view, and pouring concrete that is later cast on the end of the hardened concrete body. , the concrete hardened body is made of fiber-reinforced concrete, and a plurality of wedge-shaped protrusions are integrally formed at the end of the concrete hardened body in a direction transverse to the connection axis when viewed from above, and the wedge-shaped The protrusion has a shape that protrudes in the direction of the connection axis when viewed from above and gradually tapers , and a fibrous material protruding from the end of the wedge-shaped protrusion is bridged to the pour concrete. It is a structure.
上記請求項１に係る発明によれば、側面視及び上面視において互いに対向して離間する繊維補強コンクリートから成るコンクリート硬化体の端部、例えば、実施例に示したようなコンクリート硬化体であるプレキャストコンクリート床版１の端部（端部１１及び／又は防水層端部２１）において、接続軸横断方向（図１のＸ方向）に複数の楔型突出部（楔型突出部１２１及び／又は楔型突出部２２１）が一体に形成され、当該楔型突出部は上面視で接続軸方向（図１のＹ方向）へ突出するとともに、次第に先細りする形状を有している。そして、上記楔型突出部の端部から突出する繊維材が打継ぎコンクリート３に架橋されることを特徴としている。このような特徴的な接続構造を有することにより、接続部２に後打ちされる打継ぎコンクリート３に繊維材を架橋させることができ、例えば、床版本体１０の端部１１及び／又はＵＦＣ防水層２０の防水層端部２１との間に、付着抵抗に加えて、せん断抵抗を得ることが可能となり、コンクリート硬化体と打継ぎコンクリートとの間に高い密着性を確保することが可能となる。
According to the invention according to claim 1, the end portions of a hardened concrete body made of fiber-reinforced concrete that face and are spaced apart from each other in a side view and a top view, for example, a precast hardened concrete body as shown in the examples. At the end of the concrete slab 1 (end 11 and/or waterproof layer end 21), a plurality of wedge-shaped protrusions (wedge-shaped protrusion 121 and/or wedge A mold protrusion 221) is integrally formed, and the wedge-shaped protrusion protrudes in the connection axis direction (Y direction in FIG. 1) when viewed from above and has a shape that gradually tapers. The fiber material protruding from the end of the wedge-shaped protrusion is bridged to the pour concrete 3 . By having such a characteristic connection structure, it is possible to bridge the fibrous material to the pour concrete 3 that is post-cast at the connection part 2, for example , the end part 11 of the slab body 10 and/or the UFC waterproofing. It becomes possible to obtain shear resistance in addition to adhesion resistance between the layer 20 and the waterproof layer end 21, and it becomes possible to ensure high adhesion between the hardened concrete body and pour concrete. .
請求項２に係る発明は、前記楔型突出部における接続軸方向の突出長さ寸法と該楔型突出部の根元部における接続軸横断方向の突出幅寸法との寸法比は１：１である請求項１に記載の接続構造である。
In the invention according to claim 2, the dimension ratio between the length of the wedge-shaped protrusion in the direction of the connection axis and the width of the protrusion in the direction transverse to the connection axis at the root of the wedge-shaped protrusion is 1:1. A connection structure according to claim 1.
請求項６に係る発明は、前記繊維補強コンクリートはＵＦＣから成る請求項１乃至３のいずれかに記載の接続構造である。
The invention according to claim 6 is the connection structure according to any one of claims 1 to 3 , wherein the fiber-reinforced concrete is made of UFC.
請求項７に係る発明は、前記床版本体は、普通コンクリートから成る請求項４に記載の接続構造である。
The invention according to claim 7 is the connection structure according to claim 4 , wherein the deck main body is made of ordinary concrete .
上記請求項７に係る発明によれば、例えば、コンクリート硬化体であるプレキャストコンクリート床版１の床版本体１０を普通コンクリートとし、少なくとも一部（ＵＦＣ防水層２０）をＵＦＣによって構築する場合、ＵＦＣ内の繊維材を打継ぎコンクリート３に架橋させることができる。こうすることで、接続部２の打継ぎコンクリート３との高い密着性を確保して、互いに接続されるコンクリート硬化体全体の剛性を高めることが可能となる。
According to the invention according to claim 7, for example, when the slab body 10 of the precast concrete slab 1, which is a hardened concrete body, is made of ordinary concrete and at least a part (UFC waterproof layer 20) is constructed by UFC , The fiber material in the FC can be bridged to the pour concrete 3. By doing so, it is possible to ensure high adhesion between the connecting portion 2 and the pouring concrete 3, and to increase the rigidity of the entire hardened concrete bodies that are connected to each other.
Claims (8)
前記コンクリート硬化体は繊維補強コンクリートから成るとともに、該コンクリート硬化体の端部には、接続軸横断方向に上面視で楔型形状の複数の楔型突出部が一体に形成され、
前記楔型突出部は、上面視で接続軸方向へ突出するとともに次第に先細りする形状を有し、該楔型突出部の端部から突出する繊維材が前記打継ぎコンクリートに架橋される
ことを特徴とする接続構造。 A connection structure between ends of a hardened concrete body facing and spaced apart from each other in a side view and a top view, and splicing concrete that is later cast on the end of the hardened concrete body,
The concrete hardened body is made of fiber-reinforced concrete, and a plurality of wedge-shaped protrusions that are wedge-shaped when viewed from above in a direction transverse to the connection axis are integrally formed at the end of the concrete hardened body ,
The wedge-shaped protrusion has a shape that projects in the connection axis direction and gradually tapers when viewed from above, and the fibrous material protruding from the end of the wedge-shaped protrusion is bridged to the pouring concrete.
A connection structure characterized by:
請求項１に記載の接続構造。 The connection structure according to claim 1, wherein the ratio of the length of the wedge-shaped protrusion in the direction of the connection axis and the width of the protrusion in the direction transverse to the connection axis at the root of the wedge-shaped protrusion is 1:1. .
前記楔型突出部は、前記凸型せん断キーの上方に形成される
請求項１又は２に記載の接続構造。 Furthermore, a convex shearing key protruding in the direction of the connection axis is integrally formed at the end of the concrete hardening body,
The connection structure according to claim 1 or 2, wherein the wedge-shaped protrusion is formed above the convex shear key.
前記楔型突出部は、前記ＵＦＣ防水層の防水層端部に形成される
請求項１乃至３のいずれかに記載の接続構造。 The concrete hardening body is composed of a floor slab body and a UFC waterproof layer formed above the floor slab body and made of UFC,
The connection structure according to any one of claims 1 to 3, wherein the wedge-shaped protrusion is formed at an end of the waterproof layer of the UFC waterproof layer.
請求項１乃至４のいずれかに記載のコンクリートの接続構造。 The concrete connection structure according to any one of claims 1 to 4, wherein the pour concrete is made of UFC.
請求項１乃至３のいずれかに記載の接続構造。 The connection structure according to any one of claims 1 to 3 , wherein the fiber-reinforced concrete is made of UFC.
請求項４に記載の接続構造。 The slab body is made of ordinary concrete.
The connection structure according to claim 4 .
請求項１乃至７のいずれかに記載の接続構造。
The connection structure according to any one of claims 1 to 7, wherein the wedge-shaped protrusion is provided with a locking reinforcing bar that protrudes in the direction of the connection axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020041419A JP7366806B2 (en) | 2020-03-10 | 2020-03-10 | connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020041419A JP7366806B2 (en) | 2020-03-10 | 2020-03-10 | connection structure |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2021143486A JP2021143486A (en) | 2021-09-24 |
| JP2021143486A5 true JP2021143486A5 (en) | 2023-09-20 |
| JP7366806B2 JP7366806B2 (en) | 2023-10-23 |
Family
ID=77767195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020041419A Active JP7366806B2 (en) | 2020-03-10 | 2020-03-10 | connection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7366806B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7300231B1 (en) * | 2023-02-07 | 2023-06-29 | 株式会社美和テック | Construction method of precast floor slab, waterproof layer and floor slab |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3712694B2 (en) * | 2002-03-29 | 2005-11-02 | トヨタＴ＆Ｓ建設株式会社 | Precast concrete joint structure |
| JP6992544B2 (en) * | 2018-01-25 | 2022-01-13 | 株式会社大林組 | Ultra-high strength fiber reinforced concrete composite precast PC floor slab |
| JP6976214B2 (en) * | 2018-04-03 | 2021-12-08 | 鹿島建設株式会社 | Joining structure and joining method |
| JP6375079B1 (en) * | 2018-05-15 | 2018-08-15 | 新日鉄住金エンジニアリング株式会社 | Joint structure of precast composite floor slab perpendicular to the bridge axis and its construction method |
-
2020
- 2020-03-10 JP JP2020041419A patent/JP7366806B2/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101797969B1 (en) | Slab girder bridge with arch deck and the construction method therefor | |
| US8672579B2 (en) | Expansion joint system of concrete slab arrangement | |
| US5978997A (en) | Composite structural member with thin deck portion and method of fabricating the same | |
| CN102099536B (en) | Light-weight load-bearing structures reinforced by core elements made of segments and a method of casting such structures | |
| KR101133176B1 (en) | Ultra High Performance Concrete Slab for Cable Bridge | |
| KR20160139911A (en) | Headed Rib Precast Concrete Slab Using Deck Plate | |
| JP2021143486A5 (en) | ||
| CN212103671U (en) | Structure for improving crack resistance of simply supported bridge deck slab and continuous bridge deck slab | |
| KR100704055B1 (en) | continuous steel bridge having precast concrete slab and construction method thereof | |
| JP7366806B2 (en) | connection structure | |
| JP7254007B2 (en) | junction structure | |
| KR20050063089A (en) | Precast concrete deck being connected by roof steel and constructing method of such precast concrete deck | |
| KR102241987B1 (en) | Prestressed concrete girder and bridge construction method thereof | |
| KR101688440B1 (en) | Reinforcement Member for Beam, Beam Equipped with the Reinforcement Member, Construction Structure Using the Beam | |
| JPH0426483Y2 (en) | ||
| JP2612977B2 (en) | Prevention method of crack of post-cast concrete in composite slab. | |
| JP7300231B1 (en) | Construction method of precast floor slab, waterproof layer and floor slab | |
| JPS6095050A (en) | Precast slab fo synthetic slab and precast synthetic slab | |
| JP7398611B2 (en) | Precast board connection structure and method | |
| JP4505271B2 (en) | COMPOSITE MATERIAL FOR PRECAST STRUCTURE, PRECAST STRUCTURE, AND METHOD FOR PRODUCING PRECAST STRUCTURE | |
| JP3609369B2 (en) | Spacer block for reinforced concrete structures | |
| KR20050110336A (en) | Composite deck having shear connector using hybrid fiber reinforced plastics | |
| CN1769628B (en) | Hollow pipe for concrete filling | |
| JP4430221B2 (en) | Leg frame block and slope protection | |
| JP2887133B1 (en) | Prestressed steel concrete block for framing |