JP2010024645A - Method for mounting impact-resisting protective plate on concrete structure - Google Patents

Method for mounting impact-resisting protective plate on concrete structure Download PDF

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JP2010024645A
JP2010024645A JP2008184548A JP2008184548A JP2010024645A JP 2010024645 A JP2010024645 A JP 2010024645A JP 2008184548 A JP2008184548 A JP 2008184548A JP 2008184548 A JP2008184548 A JP 2008184548A JP 2010024645 A JP2010024645 A JP 2010024645A
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protective plate
concrete structure
impact
slot
plate body
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JP4914872B2 (en
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Nobuaki Takamura
宣明 高村
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Takamura Sogyo Corp
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Takamura Sogyo Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for mounting an impact-resisting protective plate on a concrete structure, which enables the impact-resisting protective plate to be easily mounted in a firmly fixed manner on the concrete structure such as a check dam and a bridge pier, without the need for an anchor screw and the like, and which prevents a metallic material and the like to be mounted from being exposed on the surface of the protective plate. <P>SOLUTION: This impact-resisting protective plate (A) comprises: a rubber protective plate body (1); a netlike body (2) which is embedded in the rubber protective plate body (1); and a plurality of straight rod-like connecting members (3) which are fixed to the net like body (2) and protruded from the backside (1a) of the protective plate body (1). Firstly, a groove hole (4a), into which each of the connecting members (3) can be individually inserted, is drilled into the surface of the concrete structure (4) by means of the impact-resisting protective plate (A). Subsequently, a resin-based fixing agent (5) is injected into the groove hole (4a). The connecting member (3) is inserted into the groove hole (4a) into which the fixing agent is injected, and fixed by means of the fixing agent (5). Characteristically, the above steps are sequentially repeated afterward, so that the impact-resisting protective plate (A) can be fixed to the concrete structure (4). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、コンクリート製で、岩石や流木等の衝突により衝撃を受ける砂防ダム、橋脚等のコンクリート製構造物に対し、その衝突箇所の表面を保護するために取り付けるコンクリート製構造物に対する耐衝撃用保護板の取り付け方法に関する。   The present invention is made of concrete and is used for impact resistance to concrete structures to be attached to protect the surface of the impacted portion of concrete structures such as sabo dams and bridge piers that are impacted by collisions of rocks, driftwood, etc. The present invention relates to a method for attaching a protective plate.

従来、砂防ダムや橋脚等のコンクリート製構造物には、上流から流れ出された岩石や流木がコンクリート製構造物に激しく衝突し、コンクリート製構造物の表面が損傷する。このため衝突される側のコンクリート製構造物の表面箇所には、ゴムの保護板が取り付けられている。   Conventionally, in concrete structures such as sabo dams and piers, rocks and driftwood that have flowed from the upstream violently collide with the concrete structure, and the surface of the concrete structure is damaged. For this reason, a rubber protective plate is attached to the surface portion of the collided concrete structure.

この保護板の取り付けは、コンクリート製構造物に後から取り付ける場合に、コンクリート製構造物にドリルで穴を穿設し、その穿設した穴にアンカーナットを打ち込んで取り付け、このアンカーナットと螺合するボルトで保護板を取り付けていた。   To attach this protective plate to a concrete structure later, a hole is drilled in the concrete structure and an anchor nut is driven into the drilled hole. A protective plate was attached with bolts to be used.

また、特開2000−54348号では、砂防ダム構築用の自立式型枠兼用コンクリートブロックの頂面に、ブロックの表面を被覆する保護被覆材を取り付け、この保護被覆材はコンクリートブロックから着脱自在とした自立式型枠兼用コンクリートブロックが開示されている。   Further, in JP 2000-54348 A, a protective covering material that covers the surface of the block is attached to the top surface of a self-supporting formwork combined concrete block for constructing a sabo dam, and this protective covering material is removable from the concrete block. A self-supporting formwork combined concrete block is disclosed.

また、特開2003−239256号では、砂防ダムや橋脚等のコンクリート構造物を施工する際に耐衝撃用残存型枠として使用するものとして、ゴム製で肉厚な型枠部材と、該型枠部材内に埋設する網状体と、該網状体と固着し型枠部材の裏面から直角に多数本突出する直棒状の結合部材とから成るゴム製耐衝撃用残存型枠が開示されている。
特開2000−54348号公報 特開2003−239256号公報
Japanese Patent Application Laid-Open No. 2003-239256 discloses that a rubber-made thick formwork member is used as a residual formwork for impact resistance when constructing a concrete structure such as a sabo dam or a pier, and the formwork There is disclosed a rubber-made residual mold for shock resistance comprising a net body embedded in a member and a straight bar-like coupling member that is fixed to the net body and protrudes at right angles from the back surface of the mold member.
JP 2000-54348 A JP 2003-239256 A

上記、ゴム製の保護板とコンクリート構造物に後から取り付ける場合に、保護板とコンクリート構造物との固着に際し、コンクリート構造物に打込んだアンカーナットにボルトを螺合させて保護板を取り付けるために、保護板からボルトの頭が露出する。従って、コンクリート構造物が砂防ダムや橋脚では、流出する岩石や流木等が露出したボルトに衝突してボルトを損傷させ、コンクリート構造物の表面から保護板が離脱するという問題点を有していた。   To attach the protective plate by screwing the bolts to the anchor nuts that are driven into the concrete structure when the protective plate and the concrete structure are attached later when the rubber protective plate and the concrete structure are attached later. In addition, the bolt head is exposed from the protective plate. Therefore, in concrete sabo dams and piers, the rocks and driftwood that flowed out collide with the exposed bolts, damaging the bolts, and the protective plate was detached from the surface of the concrete structure. .

また、特開2000−54348号及び特開2003−239256号のものは、砂防ダム等のコンクリート構造物を構築する際に、型枠兼用コンクリートブロックあるいは残存型枠として使用するものであり、特開2000−54348号の保護被覆材はコンクリートブロックの頂面に取り付けられているため、コンクリートブロックを型枠としての使用に限定され、また特開2003−239256号においても、ゴム製の型枠部材は現場打ちの生コンクリートと結合させて取り付けるものに限定されていた。従って、砂防ダム等でコンクリートが固化した状態のコンクリート構造物に対して、後からゴム製の保護板を取り付ける場合には適さないという問題点があった。   JP-A-2000-54348 and JP-A-2003-239256 are used as a formwork combined concrete block or a remaining formwork when constructing a concrete structure such as a sabo dam. Since the protective covering material of 2000-54348 is attached to the top surface of the concrete block, the concrete block is limited to use as a mold, and in Japanese Patent Laid-Open No. 2003-239256, a rubber mold member is They were limited to those that were installed in combination with on-site ready-mixed concrete. Therefore, there has been a problem that it is not suitable when a rubber protective plate is attached later to a concrete structure in which concrete is solidified by a sabo dam or the like.

本発明は、上記問題点に鑑み、砂防ダムや橋脚等のコンクリート構造物に対する取り付けが、アンカーネジ類を必要とせずに、容易で強固に固着できると共に、取り付ける金物等が保護板の表面に出ないコンクリート構造物に対する耐衝撃用保護板の取り付け方法を提供することを目的とする。   In view of the above problems, the present invention can be easily and firmly attached to a concrete structure such as a sabo dam or a bridge pier without requiring anchor screws, and the attached hardware etc. is exposed on the surface of the protective plate. An object of the present invention is to provide a method for attaching a shock-proof protective plate to a concrete structure having no structure.

本発明の他の目的は、砂防ダムや橋脚等のコンクリート構造物に対して、後から保護する箇所に簡単に取り付けられ、且つ、取り付ける配置も正確に出来るコンクリート構造物に対する耐衝撃用保護板の取り付け方法を提供するにある。   Another object of the present invention is to provide an impact-resistant protective plate for a concrete structure that can be easily attached to a concrete structure such as a sabo dam or a bridge pier, and can be accurately placed later. To provide a mounting method.

本発明は、ゴム製の保護板本体(1)と、該保護板本体(1)に埋設した網状体(2)と、該網状体(2)と固着し、且つ前記保護板本体(1)の裏面(1a)から複数本突出する直棒状の結合部材(3)とを具備した耐衝撃用保護板(A)を用いて、先ず、コンクリート製構造物(4)の表面に、前記各結合部材(3)が個別に挿入可能な溝穴(4a)を、前記結合部材(3)の本数分穿設する。次いで、前記溝穴(4a)に樹脂系の固着剤(5)を注入する。その固着剤(5)を注入した前記溝穴(4a)に、前記保護板本体(1)から突出する前記結合部材(3)を挿入し固着剤(5)で固着する。以後、この工程を順次繰り返して前記耐衝撃用保護板(A)を前記コンクリート製構造物(4)表面の保護箇所全面に固着させることを特徴とする。   The present invention relates to a rubber protective plate main body (1), a net (2) embedded in the protective plate main body (1), the net (2), and the protective plate main body (1). First, using the impact-resistant protective plate (A) provided with a plurality of straight rod-like coupling members (3) projecting from the back surface (1a) of the steel, each of the couplings is applied to the surface of the concrete structure (4). Slots (4a) into which the members (3) can be individually inserted are formed by the number of the coupling members (3). Next, a resin-based fixing agent (5) is injected into the slot (4a). The coupling member (3) protruding from the protective plate body (1) is inserted into the slot (4a) into which the fixing agent (5) has been injected, and is fixed with the fixing agent (5). Thereafter, this step is sequentially repeated, and the impact-resistant protective plate (A) is fixed to the entire protected portion of the surface of the concrete structure (4).

また、請求項2の本発明は、ゴム製の保護板本体(1)と、該保護板本体(1)に埋設した網状体(2)と、該網状体(2)と一端を固着し他端を前記保護板本体(1)の裏面(1a)と面一に埋設した複数のナット(6)とを具備した耐衝撃用保護板(B)を用意する。そして、予め、前記各ナット(6)にネジ棒(7)を螺合させ、該ネジ棒(7)を前記保護板本体(1)の裏面(1a)から突出させておき、先ず、コンクリート製構造物(4)の表面に、前記各ナット(6)に螺合した前記ネジ棒(7)が個別に挿入可能な溝穴(4a)を、前記ナット(6)に螺合した前記ネジ棒(7)の本数分穿設する。次いで、前記溝穴(4a)に樹脂系の固着剤(5)を注入する。その固着剤(5)を注入した前記溝穴(4a)に、前記ナット(6)に螺合した前記各ネジ棒(7)を挿入し前記固着剤(5)で固着する。以後、この工程を順次繰り返して、前記耐衝撃用保護板(B)を前記コンクリート製構造物(4)表面の保護箇所全面に固着させることを特徴とする。   Further, the present invention of claim 2 is a rubber protection plate body (1), a mesh body (2) embedded in the protection plate body (1), and one end of the mesh body (2) fixed to each other. An impact-resistant protective plate (B) having a plurality of nuts (6) whose ends are flush with the back surface (1a) of the protective plate body (1) is prepared. Then, a screw rod (7) is screwed into each nut (6) in advance, and the screw rod (7) is projected from the back surface (1a) of the protective plate body (1). The screw rod in which the slot (4a) into which the screw rod (7) screwed into each nut (6) can be individually inserted is screwed into the nut (6) on the surface of the structure (4). Drill as many as (7). Next, a resin-based fixing agent (5) is injected into the slot (4a). Each screw rod (7) screwed into the nut (6) is inserted into the slot (4a) into which the fixing agent (5) has been injected, and is fixed with the fixing agent (5). Thereafter, this step is sequentially repeated, and the impact-resistant protective plate (B) is fixed to the entire protected portion of the surface of the concrete structure (4).

また、請求項3の本発明は、前記溝穴(4a)を穿設するのに、前記保護板本体(1)の裏面(1a)と同じ紙サイズで、且つ、前記各結合部材(3)の配列と同じ配列で穿設した穴(8a)を有する型紙(8)を使用し、この型紙(8)を前記コンクリート製構造物(4)の表面に貼着した後、前記穴(8a)の位置に前記溝穴(4a)を穿設するのが好ましい。   Further, the present invention of claim 3 is the same paper size as the back surface (1a) of the protective plate main body (1) for forming the slot (4a), and each coupling member (3). After using the pattern (8) having holes (8a) drilled in the same arrangement as that of the above, the pattern (8) is adhered to the surface of the concrete structure (4), and then the holes (8a) The slot (4a) is preferably drilled at the position.

また、請求項4の本発明は、前記溝穴(4a)を穿設するのに、前記保護板本体(1)の裏面(1a)と同じ紙サイズで、且つ、前記各ナット(6)の配列と同じ配列で穿設した穴(9a)を有する型紙(9)を使用し、この型紙(9)を前記コンクリート製構造物(4)の表面に貼着した後、前記穴(9a)の位置に前記溝穴(4a)を穿設するのが好ましい。   Further, the present invention of claim 4 is the same paper size as the back surface (1a) of the protection plate main body (1), and the nuts (6) of the nuts (6) are used to make the slot (4a). After using a pattern (9) having holes (9a) drilled in the same arrangement as the arrangement, and pasting the pattern (9) on the surface of the concrete structure (4), the holes (9a) The slot (4a) is preferably formed at a position.

本発明の保護板本体(1)は、耐衝撃性や耐候性を有するゴム製の厚板であり、特には廃タイヤのゴムチップをバインダーで固めたものが耐衝撃性に極めて強く好ましく、形状としては、基本的に四角形であるが、必要により三角形のものも使用される。また板厚は使用箇所により異なるが、砂防ダムでは10cm〜30cmのものが使用される。   The protective plate body (1) of the present invention is a thick rubber plate having impact resistance and weather resistance. Particularly, a rubber tire made of waste tires hardened with a binder is extremely strong and preferable in terms of impact resistance. Is basically a quadrangle, but a triangle is also used if necessary. Moreover, although plate | board thickness changes with use locations, a thing of 10-30cm is used in a sabo dam.

本発明の請求項1でいう各結合部材(3)が個別に挿入可能とは、保護板本体(1)の裏面(1a)から複数本突出した棒状の各結合部材(3)全部が、各溝穴(4a)に一本ずつ個々に挿入可能な状態をいう。従って、溝穴(4a)は、結合部材(3)の本数と同じ数を穿設すると共に、突出した結合部材(3)の配列と同じ配列で穿設させている。   According to the first aspect of the present invention, each of the coupling members (3) can be individually inserted means that a plurality of bar-shaped coupling members (3) protruding from the back surface (1a) of the protective plate body (1) The state that can be inserted into the slot (4a) one by one. Accordingly, the slots (4a) are drilled in the same number as the number of the coupling members (3), and are drilled in the same arrangement as that of the protruding coupling members (3).

また、本発明の請求項2において、保護板本体(1)の裏面(1a)側に、複数のナット(6)を埋設しているが、このナット(6)は、一端が保護板本体(1)内に埋設した網状体(2)と溶接され、他端は保護板本体(1)の裏面(1a)と面一に埋設するのが好ましく、裏面(1a)から突出しているとコンクリート製構造物(4)に保護板本体(1)を取り付けた際に、両者間に隙間が生じ密着できず、衝撃時にナット(6)及びネジ棒(7)に直接負担が加わり、ナット(6)及びネジ棒(7)の損傷を招く原因となる。   Moreover, in Claim 2 of this invention, although the some nut (6) is embed | buried under the back surface (1a) side of the protection plate main body (1), one end of this nut (6) is a protection plate main body ( 1) It is welded to the mesh body (2) embedded in the inside, and the other end is preferably embedded flush with the back surface (1a) of the protective plate body (1). If it protrudes from the back surface (1a), it will be made of concrete. When the protective plate main body (1) is attached to the structure (4), a gap is formed between the two and it cannot be brought into close contact, and a load is directly applied to the nut (6) and the screw rod (7) at the time of impact, so that the nut (6) And cause damage to the screw rod (7).

本発明の型紙(8),(9)は、紙サイズが保護板本体(1)の裏面(1a)と同じ大きさであり、型紙(8),(9)は耐水性で容易に破損しない程度の紙質が好ましい。また、型紙(8),(9)は、コンクリート製構造物(4)に貼着して使用するので、予め型紙(8),(9)の片面に粘着材を塗布し、その上から剥離紙で貼着させ、使用時にその剥離紙を剥がして使用するのが便利で好ましい。この型紙(8),(9)を使用することにより、正確な溝穴(4a)を穿設できると共に、保護板本体(1)の配置状態が型紙(8),(9)によって予め正確に設定されるため、保護板(A),(B)の取り付けが容易で取り付けた配置も正確なものとなる。   The paper patterns (8) and (9) of the present invention have the same paper size as the back surface (1a) of the protective plate body (1), and the paper patterns (8) and (9) are water resistant and not easily damaged. A degree of paper quality is preferred. Also, since the pattern papers (8) and (9) are used by sticking them to the concrete structure (4), an adhesive is applied to one side of the pattern papers (8) and (9) in advance and then peeled off from it. It is convenient and preferable to use it by sticking with paper and peeling off the release paper at the time of use. By using the patterns (8) and (9), an accurate slot (4a) can be drilled, and the arrangement state of the protective plate body (1) can be accurately determined beforehand by the patterns (8) and (9). Since it is set, the protective plates (A) and (B) can be easily attached and the attached arrangement is also accurate.

本発明は、ゴム製の保護板本体(1)の裏面(1a)から突出させた直棒状の結合部材(3)を具備した耐衝撃用保護板(A)を使用し、コンクリート製構造物(4)に穿設した溝穴(4a)内に、前記結合部材(3)を樹脂系の固着剤(5)で固着させる方法であるから、コンクリート製構造物(4)に後から耐衝撃用保護板(A)を取り付けるのが極めて簡単で強固な固着を可能と成す。また、溝穴(4a)は結合部材(3)が挿入できる穴径であればよく、インサートネジ用のような正確な穴径を必要としないため、穿設作業に手間を要しない。   The present invention uses an impact-resistant protective plate (A) provided with a straight rod-like coupling member (3) projecting from the back surface (1a) of a rubber protective plate body (1), and a concrete structure ( 4) Since the connecting member (3) is fixed in the slot (4a) drilled in 4) with a resin-based fixing agent (5), the concrete structure (4) is used for impact resistance later. It is very easy to attach the protective plate (A), and it is possible to fix firmly. Further, the slot (4a) only needs to have a hole diameter into which the coupling member (3) can be inserted, and does not require an accurate hole diameter like that for an insert screw.

また、本発明の請求項2では、保護板本体(1)にナット(6)を設け、そのナット(6)にネジ棒(7)を螺合させて、ネジ棒(7)を保護板本体(1)の裏面(1a)から突出させた耐衝撃用保護板(B)を使用できるので、その保護板(B)の使用箇所に応じて、ネジ棒(7)の長さを調節できる。つまり、砂防ダムの例において、砂防ダムの頂面に保護板(B)を取り付ける場合は衝突する岩石や流木によって保護板(B)が剥離状態を呈するため、溝穴(4a)内からネジ棒(7)が抜き落ちないように、溝穴(4a)に挿入するネジ棒(7)を長くすることもできる。また、砂防ダムの側面に取り付ける場合には、岩石や流木が保護板本体(1)の表面に略直角に衝突するので、保護板本体(1)がコンクリート製構造物(4)から離脱する危険が少ないため、溝穴(4a)内に挿入したネジ棒(7)を短くすることもできる。要するに、取り付け箇所によって、ネジ棒(7)の長さを調節できる利点を有する。更に、ネジ棒(7)を使用したことにより、ネジの凹凸部分に固着剤(5)が入り込み、ネジ棒(7)と固着剤(5)の結合性がより高いものとなる。   Moreover, in Claim 2 of this invention, a nut (6) is provided in a protection-plate main body (1), a screw rod (7) is screwed together in the nut (6), and a screw-rod (7) is attached to a protection-plate main body. Since the impact-resistant protective plate (B) protruded from the back surface (1a) of (1) can be used, the length of the screw rod (7) can be adjusted according to the use location of the protective plate (B). In other words, in the case of a sabo dam, when the protection plate (B) is attached to the top surface of the sabo dam, the protection plate (B) is peeled off by the colliding rock or driftwood, so the screw rod from inside the slot (4a) The screw rod (7) inserted into the slot (4a) can be lengthened so that (7) does not fall out. In addition, when attaching to the side of the sabo dam, rocks and driftwood collide with the surface of the protection plate body (1) at a substantially right angle, so that the protection plate body (1) may be detached from the concrete structure (4). Therefore, the screw rod (7) inserted into the slot (4a) can be shortened. In short, it has the advantage that the length of the screw rod (7) can be adjusted depending on the attachment location. Furthermore, by using the screw rod (7), the sticking agent (5) enters the uneven portion of the screw, and the bondability between the screw rod (7) and the sticking agent (5) becomes higher.

また、本発明では、コンクリート製構造物(4)に溝穴(4a)を穿設する際に、各型紙(8),(9)のいずれかを使用して溝穴(4a)を穿設するため、コンクリート製構造物(4)に耐衝撃用保護板(A),(B)を取り付ける箇所の位置決めが極めて正確となり、且つ、複数突出する結合部材(3)及びネジ棒(7)に対し、それら全部を挿入する溝穴(4a)の位置も正確に穿設でき、特に、溝穴(4a)に挿入される結合部材(3)及びネジ棒(7)は固着剤(5)で固着する関係上、溝穴(4a)の中心に挿入されるのが良く、中心からずれて挿入されると、挿入された結合部材(3)及びネジ棒(7)の回りに固着する固着剤(5)の層が一定の厚さを保てず、薄い部分が弱い固着となり、抜け易くなるが、本発明ではこのような偏心した状態の挿入が防止できる。   Further, in the present invention, when the slot (4a) is drilled in the concrete structure (4), the slot (4a) is drilled by using any one of the patterns (8) and (9). Therefore, the positioning of the location where the impact-resistant protective plates (A) and (B) are attached to the concrete structure (4) becomes extremely accurate, and a plurality of protruding coupling members (3) and screw rods (7) are provided. On the other hand, the position of the slot (4a) for inserting all of them can also be precisely drilled. In particular, the connecting member (3) and the screw rod (7) inserted into the slot (4a) are made of the adhesive (5). It is preferable that it is inserted into the center of the slot (4a) because of the sticking relationship, and the sticking agent that sticks around the inserted coupling member (3) and screw rod (7) when inserted off the center. The layer (5) cannot maintain a certain thickness, and the thin portion becomes weakly fixed and easily removed, but in the present invention, such an eccentric state Insertion can be prevented.

以下、本発明の実施形態につき、図を基に説明する。図1は本発明の取り付け方法を示す説明図、図2は本発明に使用する耐衝撃用保護板の断面図、図3は本発明に使用する他の耐衝撃用保護板の断面図、図4は本発明に使用する他の耐衝撃用保護板にネジ棒を螺合させた状態を示す断面図、図5、6は本発明の取り付け方法により耐衝撃用保護板を取り付けた状態を示す説明図、図7は本発明の型紙を示す平面図、図8は本発明の型紙をコンクリート製構造物に貼着した状態を示す説明図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing the mounting method of the present invention, FIG. 2 is a cross-sectional view of an impact-resistant protective plate used in the present invention, and FIG. 3 is a cross-sectional view of another impact-resistant protective plate used in the present invention. 4 is a cross-sectional view showing a state in which a screw rod is screwed to another shock-resistant protective plate used in the present invention, and FIGS. 5 and 6 show a state in which the shock-resistant protective plate is attached by the attachment method of the present invention. FIG. 7 is a plan view showing the paper pattern of the present invention, and FIG. 8 is an explanatory view showing a state in which the paper pattern of the present invention is attached to a concrete structure.

図2〜4は、本発明に使用する耐衝撃用保護板(A),(B)を示している。この図中、(1)はゴム製の保護板本体であり、該保護板本体(1)は岩石や流木が当るため耐衝撃性が要求される。従って、使用するゴムの材質としては、天然ゴム,合成ゴムの中で特に耐衝撃性が高く、安価なものが好ましい。特に、廃タイヤのチップをバインダーで固めて保護板本体(1)に成形させるのがよい。(2)は保護板本体(1)内に埋設した補強用及び後述する結合部材(3)を固定するための網状体である。この網状体(2)は、金属製で丸棒でもって網状に組んだものが角がないため、保護板本体(1)に衝撃が加わっても損傷が少なく好ましく、特には、鉄筋棒を網状に組んだものが最適である。   2 to 4 show the shock-resistant protective plates (A) and (B) used in the present invention. In this figure, (1) is a rubber protective plate main body, and the protective plate main body (1) is required to have impact resistance because it hits rocks and driftwood. Accordingly, the rubber material to be used is preferably a natural rubber or a synthetic rubber that has particularly high impact resistance and is inexpensive. In particular, it is preferable that the chip of the waste tire is hardened with a binder and molded into the protective plate body (1). (2) is a mesh for fixing a reinforcing member embedded in the protective plate body (1) and a connecting member (3) described later. This mesh body (2) is made of metal and is rounded with a round bar and has no corners. Therefore, even if an impact is applied to the protective plate body (1), it is less damaged. The one assembled with is the best.

(3)は結合部材であり、該結合部材(3)は金属製で直棒状のものである。この結合部材(3)の一端は網状体(2)と溶接で固着させ、他端側は保護板本体(1)の裏面(1a)から突出させている。この結合部材(3)の本数は、保護板本体(1)の大きさによって設定され、本数が少ないとコンクリート製構造物(4)との結合が弱く、あまり多いと、取り付ける際に穿設する溝穴(4a)も多くなり、取り付けに手間を要すことになる。この結合部材(3)は、固着剤(5)で固着させる関係上、表面に凹凸を形成したものがよく、特には鉄筋棒が最適である。   (3) is a connecting member, and the connecting member (3) is made of metal and has a straight bar shape. One end of the coupling member (3) is fixed to the mesh body (2) by welding, and the other end is protruded from the back surface (1a) of the protective plate body (1). The number of the coupling members (3) is set according to the size of the protection plate body (1). If the number is small, the coupling with the concrete structure (4) is weak, and if the number is too large, the coupling member (3) is drilled when attached. Groove holes (4a) are also increased, which requires time and effort. The connecting member (3) is preferably formed with irregularities on the surface in view of fixing with the fixing agent (5), and a reinforcing bar is particularly optimal.

また、図3では他の耐衝撃用保護板(B)を示している。この図3において、(6)は金属製のナットであり、その一端を網状体(2)と溶接で固着し、他端が保護板本体(1)の裏面(1a)と面一に埋設させている。尚、ナット(6)の他端は、裏面(1a)から面一にして突出しないのが好ましいが、裏面(1a)の内側に多少凹んだ状態に設けてもよい。このナット(6)は保護板本体(1)に複数個設け、その個数は前記結合部材(3)の本数と同様である。   FIG. 3 shows another shock-resistant protective plate (B). In FIG. 3, (6) is a metal nut, one end of which is fixed to the mesh body (2) by welding, and the other end is buried flush with the back surface (1a) of the protective plate body (1). ing. The other end of the nut (6) is preferably not flush with the back surface (1a), but may be provided in a slightly recessed state inside the back surface (1a). A plurality of the nuts (6) are provided on the protective plate body (1), and the number thereof is the same as the number of the coupling members (3).

図4は耐衝撃用保護板(B)のナット(6)にネジ棒(7)を螺合させた状態のものである。このネジ棒(7)は前記した結合部材(3)に相当する。   FIG. 4 shows a state in which the screw rod (7) is screwed onto the nut (6) of the shock-resistant protective plate (B). This screw rod (7) corresponds to the above-mentioned coupling member (3).

次に、本発明の耐衝撃用保護板(A)の取り付け方法について、砂防ダムに取り付ける例として図1を基に説明する。先ず、図1(a)に示すように、コンクリート製構造物(4)の頂面に複数の溝穴(4a)を穿設する。この穿設する溝穴(4a)の数は、結合部材(3)の本数分である。溝穴(4a)を穿設したならば、図1(b)に示すように、溝穴(4a)内に樹脂系の固着剤(5)を必要量注入する。この固着剤(5)は樹脂系の主剤と硬化剤とを混合して注入するものであり、主剤としては、例えば、非スチレン系エポキシアクリレートを主成分とし、これにBPO(ベンソイルバーオキサイト)ペーストの硬化剤を混合して注入される。   Next, a method of attaching the shock-resistant protective plate (A) of the present invention will be described based on FIG. 1 as an example of attaching to a sabo dam. First, as shown in FIG. 1 (a), a plurality of slots (4a) are drilled in the top surface of the concrete structure (4). The number of slots (4a) to be drilled is equal to the number of coupling members (3). When the slot (4a) is formed, as shown in FIG. 1 (b), a required amount of resin-based fixing agent (5) is injected into the slot (4a). This fixing agent (5) is a mixture in which a resin-based main agent and a curing agent are mixed and injected. As the main agent, for example, a non-styrenic epoxy acrylate is used as a main component, and BPO (benzoyl peroxide) is added thereto. ) The paste hardener is mixed and injected.

この固着剤(5)を注入後、図1(c)の如く、固着剤(5)が硬化しない使用可能時間内に結合部材(3)が挿入され、耐衝撃用保護板(A)がコンクリート製構造物(4)に取り付けられる。尚、固着剤(5)の使用可能時間は通常20℃で約30分である。それを過ぎると、固着剤(5)は硬化を開始し、結合部材(3)の挿入が困難となる。   After injecting this sticking agent (5), as shown in FIG. 1 (c), the connecting member (3) is inserted within a usable time in which the sticking agent (5) is not cured, and the protective plate for impact resistance (A) is made of concrete. It is attached to the structure (4). The usable time of the sticking agent (5) is usually about 30 minutes at 20 ° C. After that, the fixing agent (5) starts to harden and it becomes difficult to insert the coupling member (3).

この固着剤(5)の具体例としては、例えば、旭化成ケミカルズ社製の商品名ARケミカルセッターEX―400や同社製の商品名エポセッターUEシリーズ等が使用される。   Specific examples of the sticking agent (5) include, for example, trade name AR chemical setter EX-400 manufactured by Asahi Kasei Chemicals Corporation, and trade name Eposetter UE series manufactured by the same company.

そして、この工程を順次繰り返して図1(d)に示すように、コンクリート製構造物(4)の頂面に全体に耐衝撃用保護板(A)を取り付けるのである。   And this process is repeated sequentially, and as shown in FIG.1 (d), the protection board (A) for an impact resistance is attached to the whole top surface of a concrete structure (4).

また、耐衝撃用保護板(B)の取り付け方法についても、前記した耐衝撃用保護板(A)の工程と同様にコンクリート製構造物(4)に取り付けられるが、この場合には、耐衝撃用保護板(B)には、図4の如く、予めナット(6)にネジ棒(7)を螺合したものが使用される。つまり、コンクリート製構造物(4)の頂面にネジ棒(7)を挿入する溝穴(4a)を複数穿設し、その溝穴(4a)に固着剤(5)を注入した後、その溝穴(4a)にネジ棒(7)を挿入して耐衝撃用保護板(B)が取り付けられる。   Also, with respect to the method of attaching the shock-resistant protective plate (B), the shock-resistant protective plate (B) is attached to the concrete structure (4) in the same manner as the above-described shock-resistant protective plate (A). As the protective plate (B), as shown in FIG. 4, a screw rod (7) screwed into a nut (6) in advance is used. That is, a plurality of slots (4a) for inserting the screw rods (7) are formed on the top surface of the concrete structure (4), and the fixing agent (5) is injected into the slots (4a). The screw rod (7) is inserted into the slot (4a), and the shock-resistant protective plate (B) is attached.

このように取り付けられた耐衝撃用保護板(A),(B)について、両者の取り付け状態を比較した図5、6を示すと、図5は、耐衝撃用保護板(A)をコンクリート製構造物(4)の頂面に取り付けた状態を示し、図6は耐衝撃用保護板(B)をコンクリート製構造物(4)の頂面に取り付けた状態を示している。このように、コンクリート製構造物(4)に後から耐衝撃用保護板(A),(B)を取り付けても、結合部材(3)やネジ棒(7)が保護板本体(1)から露出することなく取り付けられる。   FIG. 5 and FIG. 6 comparing the attachment states of the shock-resistant protective plates (A) and (B) attached in this way are shown in FIG. The state attached to the top surface of the structure (4) is shown, and FIG. 6 shows the state where the protective plate (B) for impact resistance is attached to the top surface of the concrete structure (4). In this way, even if the impact-resistant protective plates (A) and (B) are attached to the concrete structure (4) later, the coupling member (3) and the screw rod (7) are removed from the protective plate body (1). It can be installed without being exposed.

図7は型紙(8),(9)であり、該型紙(8)は穴(8a)を複数穿設して耐衝撃用保護板(A)の取り付けに使用し、型紙(9)は穴(9a)を複数穿設して耐衝撃用保護板(B)の取り付けに使用するものである。この型紙(8),(9)には、片面に粘着剤を塗り、その上から剥離紙を貼着すると、現場でコンクリート製構造物(4)に貼り付けるのに便利である。この型紙(8),(9)に穿設した穴(8a),(9a)は、結合部材(3)又はネジ棒(7)の配列位置と同一に設けたものである。また、型紙(8),(9)の紙サイズは、保護板本体(1)の裏面(1a)の大きさと同一である。従って、この型紙(8),(9)をコンクリート製構造物(4)に貼着して、その穴(8a),(9a)の位置にドリルで所定の溝穴(4a)を穿設すれば、結合部材(3)又はネジ棒(7)の配列位置と同一な位置に溝穴(4a)が正確に穿設されるのである。   FIG. 7 shows pattern papers (8) and (9). The paper pattern (8) has a plurality of holes (8a) and is used to attach the protective plate (A) for impact resistance. The paper pattern (9) is a hole. A plurality of (9a) are drilled and used for mounting the shock-resistant protective plate (B). When these paper patterns (8) and (9) are coated with an adhesive on one side and a release paper is stuck on top of it, it is convenient to affix it to the concrete structure (4) on site. The holes (8a) and (9a) drilled in the patterns (8) and (9) are provided in the same positions as the connecting members (3) or screw rods (7). The paper sizes of the patterns (8) and (9) are the same as the size of the back surface (1a) of the protective plate body (1). Therefore, this pattern (8), (9) is affixed to the concrete structure (4), and a predetermined slot (4a) is drilled at the positions of the holes (8a), (9a). For example, the slot (4a) is precisely drilled at the same position as the arrangement position of the coupling member (3) or the screw rod (7).

更に、この型紙(8),(9)を使用すると、耐衝撃用保護板(A),(B)の取り付け位置も正確にでき、特に、耐衝撃用保護板(A),(B)を取り付ける際に、それぞれに目地(10)を設けるのに便利である。つまり、型紙(8),(9)でもって、目地(10)を残した状態で貼着することにより、正確な幅の目地(10)が施工できるのである。本発明のように溝穴(4a)を穿設して取り付ける方法においては、型紙(8),(9)を使用しないと、正確な目地(10)が簡単に施工できない。従って、この型紙(8),(9)を使用することにより、溝穴(4a)の施工、耐衝撃用保護板(A),(B)のそれぞれの取り付け位置及び目地(10)の施工が極めて正確で簡単となる。尚、前記目地(10)には、液状ゴムを注入して目地(10)の溝を仕上げると、保護板本体(1)が一体化し強くなる。   Furthermore, if this pattern (8), (9) is used, the mounting position of the impact-resistant protective plates (A), (B) can be made accurately, and in particular, the impact-resistant protective plates (A), (B) When installing, it is convenient to provide joints (10) for each. In other words, the joint (10) having an accurate width can be constructed by sticking with the patterns (8) and (9) while leaving the joint (10). In the method of drilling and attaching the slot (4a) as in the present invention, the accurate joint (10) cannot be easily constructed unless the patterns (8) and (9) are used. Therefore, by using this pattern (8), (9), the construction of the slot (4a), the mounting position of the protective plate for impact resistance (A), (B) and the construction of the joint (10) Extremely accurate and simple. When the liquid rubber is injected into the joint (10) to finish the groove of the joint (10), the protective plate body (1) is integrated and strengthened.

本発明の取り付け方法を示す説明図である。It is explanatory drawing which shows the attachment method of this invention. 本発明に使用する耐衝撃用保護板の断面図である。It is sectional drawing of the protection board for an impact resistance used for this invention. 本発明に使用する他の耐衝撃用保護板の断面図である。It is sectional drawing of the other protection plate for impact resistance used for this invention. 本発明に使用する他の耐衝撃用保護板にネジ棒を螺合させた状態を示す断面図である。It is sectional drawing which shows the state which screwed the screw rod to the other impact-resistant protection board used for this invention. 本発明の取り付け方法により耐衝撃用保護板を取り付けた状態を示す説明図である。It is explanatory drawing which shows the state which attached the protection board for an impact resistance with the attachment method of this invention. 本発明の取り付け方法により他の耐衝撃用保護板を取り付けた状態を示す説明図である。It is explanatory drawing which shows the state which attached the other protection plate for an impact resistance with the attachment method of this invention. 本発明で使用する型紙を示す平面図である。It is a top view which shows the paper pattern used by this invention. 本発明の型紙をコンクリート製構造物に貼着した状態を示す説明図である。It is explanatory drawing which shows the state which affixed the paper pattern of this invention on the concrete structure.

符号の説明Explanation of symbols

1 保護板本体
1a 裏面
2 網状体
3 結合部材
4 コンクリート製構造物
4a 溝穴
5 固着剤
6 ナット
7 ネジ棒
8,9 型紙
8a,9a 穴
A,B 耐衝撃用保護板
1 Protection plate body
1a Back side 2 Net body 3 Coupling member 4 Concrete structure
4a Slot 5 Adhesive 6 Nut 7 Screw rod 8,9 Pattern
8a, 9a Hole A, B Shockproof protection plate

Claims (4)

ゴム製の保護板本体(1)と、該保護板本体(1)に埋設した網状体(2)と、該網状体(2)と固着し、且つ前記保護板本体(1)の裏面(1a)から複数本突出する直棒状の結合部材(3)とを具備した耐衝撃用保護板(A)を用いて、先ず、コンクリート製構造物(4)の表面に、前記各結合部材(3)が個別に挿入可能な溝穴(4a)を、前記結合部材(3)の本数分穿設し、次いで、前記溝穴(4a)に樹脂系の固着剤(5)を注入し、その固着剤(5)を注入した前記溝穴(4a)に、前記保護板本体(1)から突出する前記結合部材(3)を挿入し前記固着剤(5)で固着させ、以後、この工程を順次繰り返して前記耐衝撃用保護板(A)を前記コンクリート製構造物(4)表面の保護箇所全面に固着させることを特徴とするコンクリート製構造物に対する耐衝撃用保護板の取り付け方法。   A rubber protection plate body (1), a mesh body (2) embedded in the protection plate body (1), a back surface (1a) of the protection plate body (1) fixed to the mesh body (2) ) Using a shock-resistant protective plate (A) provided with a plurality of straight rod-shaped coupling members (3) projecting from each other, first, each coupling member (3) is formed on the surface of the concrete structure (4). Are inserted into the slot (4a) by the number of the coupling members (3), and then a resin-based fixing agent (5) is injected into the slot (4a). The coupling member (3) protruding from the protective plate body (1) is inserted into the slot (4a) into which (5) has been injected and fixed with the fixing agent (5). And the shock-proof protective plate (A) is fixed to the entire surface of the protective part of the surface of the concrete structure (4). Method of mounting an impact protection plate against manufacturing structure. ゴム製の保護板本体(1)と、該保護板本体(1)に埋設した網状体(2)と、該網状体(2)と一端を固着し他端を前記保護板本体(1)の裏面(1a)と面一に埋設したナット(6)とを具備した耐衝撃用保護板(B)を用意し、予め、前記各ナット(6)にネジ棒(7)を螺合させ、該ネジ棒(7)を前記保護板本体(1)の裏面(1a)から突出させておき、先ず、コンクリート製構造物(4)の表面に、前記各ナット(6)に螺合した前記ネジ棒(7)が個別に挿入可能な溝穴(4a)を、前記ナット(6)に螺合した前記ネジ棒(7)の本数分穿設し、次いで、前記溝穴(4a)に樹脂系の固着剤(5)を注入し、その固着剤(5)を注入した前記溝穴(4a)に、前記ナット(6)に螺合した前記各ネジ棒(7)を挿入し前記固着剤(5)で固着させ、以後、この工程を順次繰り返して、前記耐衝撃用保護板(B)を前記コンクリート製構造物(4)表面の保護箇所全面に固着させることを特徴とするコンクリート製構造物に対する耐衝撃用保護板の取り付け方法。   A rubber protection plate body (1), a mesh body (2) embedded in the protection plate body (1), one end of the mesh body (2) is fixed, and the other end of the protection plate body (1) An impact-resistant protective plate (B) having a back surface (1a) and a nut (6) embedded in the same plane is prepared, and screw rods (7) are screwed into the nuts (6) in advance, The screw rod (7) is protruded from the back surface (1a) of the protective plate body (1), and first, the screw rod screwed into the nut (6) on the surface of the concrete structure (4). Slots (4a) in which (7) can be inserted individually are drilled by the number of screw rods (7) screwed into the nut (6), and then the resin holes are inserted into the slots (4a). The fixing agent (5) is injected, and the screw rod (7) screwed into the nut (6) is inserted into the slot (4a) into which the fixing agent (5) has been injected, and the fixing agent (5 )so After that, the steps are sequentially repeated, and the impact-resistant protective plate (B) is fixed to the entire protected portion of the surface of the concrete structure (4). How to attach the protective plate for the machine. 前記溝穴(4a)を穿設するのに、前記保護板本体(1)の裏面(1a)と同じ紙サイズで、且つ、前記各結合部材(3)の配列と同じ配列で穿設した穴(8a)を有する型紙(8)を使用し、この型紙(8)を前記コンクリート製構造物(4)の表面に貼着した後、前記穴(8a)の位置に前記溝穴(4a)を穿設する請求項1記載のコンクリート製構造物に対する耐衝撃用保護板の取り付け方法。   Holes drilled in the same paper size as the back surface (1a) of the protective plate main body (1) and in the same arrangement as each of the coupling members (3) for drilling the slot (4a) After using the pattern (8) having (8a) and sticking this pattern (8) to the surface of the concrete structure (4), the groove (4a) is formed at the position of the hole (8a). The method for attaching an impact-resistant protective plate to a concrete structure according to claim 1 to be drilled. 前記溝穴(4a)を穿設するのに、前記保護板本体(1)の裏面(1a)と同じ紙サイズで、且つ、前記各ナット(6)の配列と同じ配列で穿設した穴(9a)を有する型紙(9)を使用し、この型紙(9)を前記コンクリート製構造物(4)の表面に貼着した後、前記穴(9a)の位置に前記溝穴(4a)を穿設する請求項2記載のコンクリート製構造物に対する耐衝撃用保護板の取り付け方法。
The holes (4a) are drilled in the same paper size as the back surface (1a) of the protection plate body (1) and in the same arrangement as the arrangement of the nuts (6) ( After using the pattern (9) having 9a) and sticking this pattern (9) on the surface of the concrete structure (4), the slot (4a) is made at the position of the hole (9a). A method for attaching an impact-resistant protective plate to a concrete structure according to claim 2.
JP2008184548A 2008-07-16 2008-07-16 Attaching impact-resistant protective plates to concrete structures Expired - Fee Related JP4914872B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010024783A (en) * 2008-07-24 2010-02-04 Keeper Co Ltd Protective member for structure
RU176731U1 (en) * 2017-07-24 2018-01-25 федеральное государственное автономное образовательное учреждение высшего образования "Северо-Кавказский федеральный университет" Device for protecting bridge piers against floating trees, branches and bushes
CN111335257A (en) * 2020-03-19 2020-06-26 合肥上量机械科技有限公司 Dam body anchoring structure easy to install
CN113062275A (en) * 2021-03-29 2021-07-02 西安建筑科技大学 Assembled bridge pier buffer stop

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000054348A (en) * 1998-08-11 2000-02-22 Mitsubishi Material Kenzai Corp Block for checkdam
JP2001173137A (en) * 1999-12-14 2001-06-26 Takamura Sogyo Kk Left-in-place-formwork
JP2002038575A (en) * 2000-07-28 2002-02-06 Seibu Polymer Corp Concrete abrasion resisting plate structure for sewerage system
JP2003239256A (en) * 2002-02-13 2003-08-27 Takamura Sogyo Kk Rubber-made impact resisting residual form

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000054348A (en) * 1998-08-11 2000-02-22 Mitsubishi Material Kenzai Corp Block for checkdam
JP2001173137A (en) * 1999-12-14 2001-06-26 Takamura Sogyo Kk Left-in-place-formwork
JP2002038575A (en) * 2000-07-28 2002-02-06 Seibu Polymer Corp Concrete abrasion resisting plate structure for sewerage system
JP2003239256A (en) * 2002-02-13 2003-08-27 Takamura Sogyo Kk Rubber-made impact resisting residual form

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010024783A (en) * 2008-07-24 2010-02-04 Keeper Co Ltd Protective member for structure
RU176731U1 (en) * 2017-07-24 2018-01-25 федеральное государственное автономное образовательное учреждение высшего образования "Северо-Кавказский федеральный университет" Device for protecting bridge piers against floating trees, branches and bushes
CN111335257A (en) * 2020-03-19 2020-06-26 合肥上量机械科技有限公司 Dam body anchoring structure easy to install
CN111335257B (en) * 2020-03-19 2021-09-17 夏雪莲 Dam body anchoring structure easy to install
CN113062275A (en) * 2021-03-29 2021-07-02 西安建筑科技大学 Assembled bridge pier buffer stop

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