JP4914873B2 - Attaching impact-resistant protective plates to concrete structures - Google Patents
Attaching impact-resistant protective plates to concrete structures Download PDFInfo
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- JP4914873B2 JP4914873B2 JP2008185687A JP2008185687A JP4914873B2 JP 4914873 B2 JP4914873 B2 JP 4914873B2 JP 2008185687 A JP2008185687 A JP 2008185687A JP 2008185687 A JP2008185687 A JP 2008185687A JP 4914873 B2 JP4914873 B2 JP 4914873B2
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- 230000001681 protective effect Effects 0.000 title claims description 73
- 229920001971 elastomer Polymers 0.000 claims description 26
- 239000005060 rubber Substances 0.000 claims description 26
- 230000035939 shock Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 10
- 238000009415 formwork Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- JHJNPOSPVGRIAN-SFHVURJKSA-N n-[3-[(1s)-1-[[6-(3,4-dimethoxyphenyl)pyrazin-2-yl]amino]ethyl]phenyl]-5-methylpyridine-3-carboxamide Chemical compound C1=C(OC)C(OC)=CC=C1C1=CN=CC(N[C@@H](C)C=2C=C(NC(=O)C=3C=C(C)C=NC=3)C=CC=2)=N1 JHJNPOSPVGRIAN-SFHVURJKSA-N 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
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。
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、アンカーナットにボルトを螺合させた保護板の取り付けは、保護板がボルトのみにより固着させているため、衝撃が加わるとボルトから保護板が外れ易い。つまり、保護板はボルトがある部分のみの点状で保持しており、保護板を線や面で保持されていないため、衝撃に耐えず、コンクリート構造物の表面から離脱するという問題点を有していた。また、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。 When attaching the protective plate made of rubber and the concrete structure later, when attaching the protective plate to the concrete structure, the protective plate is screwed into the anchor nut. Since it is fixed, the protective plate is easily detached from the bolt when an impact is applied. In other words, the protective plate is held in the form of dots only where there are bolts, and since the protective plate is not held by lines or surfaces, it has the problem that it does not withstand impacts and detaches from the surface of the concrete structure. Was. Moreover, in order to attach the protection plate by screwing the bolt into the anchor nut driven into the concrete structure, the head of the bolt is exposed from the protection 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られるものに限定されていた。従って、砂防ダム等の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 and 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 It was limited to those that could be combined 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 such as a sabo dam is solidified.
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ゴム製の保護板を後から取り付けるのに簡単であり、且つ、岩石や流木の衝突に対し、保護板がコンクリート構造物から離脱し難いと共に、保護板を固定するボルトに直接衝撃が加わらないようにボルトの耐衝撃性を高めた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 is easy to attach a rubber protective plate to a concrete structure such as a sabo dam or a bridge pier later, and the protective plate has a concrete structure against a collision of rocks or driftwood. It is an object of the present invention to provide a method for attaching an impact-resistant protective plate to a concrete structure in which the impact resistance of the bolt is increased so that the bolt that fixes the protective plate is not directly subjected to an impact and is not easily detached from an object.
本発明の他の目的は、保護板が損傷したり離脱した際に、保護板の取り付け補修が簡単にでき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 a method for attaching an impact-resistant protective plate that can easily repair the protective plate when the protective plate is damaged or detached.
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)に固着させた複数の座金(13)と、該座金(13)の箇所で前記保護板本体(11)に穿設した段付き深穴(14)とを有する耐衝撃用保護板(1)を使用し、先ず、コンクリート製構造物(2)に、前記耐衝撃用保護板(1)を穿設用の治具代りに使用して前記段付き深穴(14)と同じ配列及び数の溝穴(2a)を穿設する。そして、その溝穴(2a)にインサートナット(3)を挿入し固定させ、次いで、前記耐衝撃用保護板(1)を、その段付き深穴(14)に挿入したボルト(4)を前記インサートナット(3)に螺合し締付けて、前記コンクリート製構造物(2)に取り付けると共に、前記段付き深穴(14)内の前記ボルト(4)の頭部(4a)を、前記保護板本体(11)の表面(11a)より没入させたことを特徴とする。 A rubber protection plate body (1), a mesh body (2) embedded in the protection plate body (1), a plurality of washers (13) fixed to the mesh body (2), and the washers (13 ), The shock-resistant protective plate (1) having a stepped deep hole (14) drilled in the protective plate main body (11) is used. The impact protection plate (1) is used in place of the drilling jig to drill the same number and the same number of slots (2a) as the stepped deep holes (14). Then, the insert nut (3) is inserted and fixed in the slot (2a), and then the bolt (4) in which the shock-resistant protective plate (1) is inserted into the stepped deep hole (14) is inserted into the groove (2a). The insert nut (3) is screwed and tightened to attach to the concrete structure (2), and the head (4a) of the bolt (4) in the stepped deep hole (14) is attached to the protective plate. It is characterized by being immersed from the surface (11a) of the main body (11).
また、請求項2の本発明は、ゴム製の保護板本体(11)と、該保護板本体(11)内に埋設した網状体(12)と、該網状体(12)に固着させた複数の座金(13)と、該座金(13)の箇所で前記保護板本体(11)に穿設した段付き深穴(14)を有する耐衝撃用保護板(1)を使用し、先ず、コンクリート製構造物(2)に、前記段付き深穴(14)と同じ配列及び数の溝穴(2a)を穿設し、該溝穴(2a)にインサートナット(3)を挿入し固定させ、次いで、前記耐衝撃用保護板(1)の段付き深穴(14)に挿入したボルト(4)を前記インサートナット(3)に螺合して締付け、前記耐衝撃用保護板(1)を前記コンクリート製構造物(2)に取り付けた後、前記段付き深穴(14)に没入した前記ボルト(4)の頭部(4a)をゴム部材(5)で被覆したことを特徴とする。 Further, the present invention of claim 2 is a rubber protection plate body (11), a mesh body (12) embedded in the protection plate body (11), and a plurality of members fixed to the mesh body (12). And a shock-resistant protective plate (1) having a stepped deep hole (14) drilled in the protective plate body (11) at the location of the washer (13). The structure (2) is drilled with the same arrangement and number of slots (2a) as the stepped deep holes (14), and the insert nuts (3) are inserted into the slots (2a) and fixed. Next, the bolt (4) inserted into the stepped deep hole (14) of the shock-resistant protective plate (1) is screwed into the insert nut (3) and tightened, and the shock-resistant protective plate (1) is then tightened. After attaching to the concrete structure (2), the head (4a) of the bolt (4) immersed in the stepped deep hole (14) was covered with a rubber member (5). It is characterized by.
本発明の段付き深穴(14)とは、保護板本体(11)の表面(11a)側が大径で裏面(11b)側を小径にした段付きの貫通穴であり、しかも大径の穴はボルト(4)の頭部(4a)が入る穴径で、且つボルト(4)の頭部(4a)が表面(11a)より深く没入する深穴であり、小径の穴はボルト(4)が挿入できるバカ穴である。 The stepped deep hole (14) of the present invention is a stepped through hole in which the front surface (11a) side of the protective plate body (11) has a large diameter and the back surface (11b) side has a small diameter. Is a hole diameter into which the head (4a) of the bolt (4) enters, and a deep hole into which the head (4a) of the bolt (4) penetrates deeper than the surface (11a). Is a stupid hole that can be inserted.
また、本発明のボルト(4)の頭部(4a)が、保護板本体(11)の表面(11a)より没入させたこととは、ボルト(4)をインサートナット(3)に螺合して締付けた状態において、ボルト(4)の頭部(4a)が、段付き深穴(14)内に没入し保護板本体(11)の表面(11a)より深く段付き深穴(14)の奥内に位置することをいう。 In addition, the fact that the head (4a) of the bolt (4) of the present invention is recessed from the surface (11a) of the protective plate body (11) means that the bolt (4) is screwed into the insert nut (3). The head (4a) of the bolt (4) is inserted into the stepped deep hole (14) and is deeper than the surface (11a) of the protective plate body (11). It is located in the back.
本発明は、ゴム製の保護板本体(11)と、その保護板本体(11)内に埋設した網状体(12)と、網状体(12)に固着した座金(13)と、その座金(13)の箇所で保護板本体(11)に穿設した段付き深穴(14)を有する耐衝撃用保護板(1)を使用するものであるから、コンクリート製構造物(2)に固着させたインサートナット(3)とボルト(4)で耐衝撃用保護板(1)をコンクリート製構造物(2)に取り付けると、座金(13)と固着した網状体(12)が保護板本体(11)の全体を保持し、保護板本体(11)が離脱し難く、耐衝撃性及び保着性が極めて高い取り付けとなる。つまり、座金(13)と固着した網状体(12)が無いと、ボルト(4)の頭部(4a)と座金(13)の小さな面で保護板本体(11)を保持するため、その部分から保護板本体(11)が抜け落ち易く、特に強い衝撃時には保護板本体(11)がボルト(4)から外れ、コンクリート製構造物(2)から離脱する危険を有するが、本発明では、コンクリート製構造物(2)に取り付けた状態において、保護板本体(11)が網状体(12)で網状に保持され、しかも、その網状体(12)と座金(13)とが固着しており、インサートナット(3)に螺合し締付けたボルト(4)が座金(13)の部分だけを保持していても、その保持状態は網状体(12)にも及び、保護板本体(11)は広い網状に渡って保持されるのである。従って、保護板本体(11)が衝撃によって、離脱する恐れが極めて少ない。 The present invention includes a rubber protection plate body (11), a mesh body (12) embedded in the protection plate body (11), a washer (13) fixed to the mesh body (12), and a washer ( Since the shock-resistant protective plate (1) having the stepped deep hole (14) drilled in the protective plate body (11) at the point of 13) is used, it is fixed to the concrete structure (2). When the shock-resistant protective plate (1) is attached to the concrete structure (2) with the insert nut (3) and bolt (4), the mesh (12) fixed to the washer (13) is attached to the protective plate body (11 ), The protective plate main body (11) is not easily detached, and the attachment is extremely high in impact resistance and adhesion. That is, if there is no mesh body (12) fixed to the washer (13), the protection plate body (11) is held by the small surface of the head (4a) and the washer (13) of the bolt (4). The protection plate main body (11) is easy to come off from the wall, and there is a risk that the protection plate main body (11) will come off from the bolt (4) and detach from the concrete structure (2) particularly in the event of a strong impact. In the state attached to the structure (2), the protective plate body (11) is held in a mesh form by the mesh body (12), and the mesh body (12) and the washer (13) are firmly attached to each other. Even if the bolt (4) screwed and tightened to the nut (3) holds only the washer (13), the holding state extends to the mesh (12) and the protection plate body (11) is wide. It is held across the net. Therefore, there is very little possibility that the protective plate body (11) will be detached due to an impact.
また、網状体(12)と座金(13)とを固着させた状態では、ボルト(4)をインサートナット(3)に螺合し強く締付けても、その締付け力が網状体(12)で分散し、保護板本体(11)の変形が少なく、ボルト(4)による保護板(1)の取り付けがきれいにできる。 In addition, in the state where the mesh body (12) and the washer (13) are fixed, even if the bolt (4) is screwed into the insert nut (3) and tightened strongly, the tightening force is dispersed in the mesh body (12). In addition, the protection plate body (11) is less deformed, and the protection plate (1) can be mounted neatly with the bolt (4).
また、保護板(1)の取り付けがインサートナット(3)とボルト(4)によるものであるから、保護板(1)の取り替えが容易となる。 Further, since the protection plate (1) is attached by the insert nut (3) and the bolt (4), the protection plate (1) can be easily replaced.
また、コンクリート製構造物(2)に溝穴(2a)を穿設する際に、耐衝撃用保護板(1)を、コンクリート製構造物(2)の設置箇所に仮設置し、この仮設置した保護板(1)を溝穴(2a)穿設用の治具代りとしても使用でき、保護板(1)の段付き深穴(14)と同配列な溝穴(2a)を早く正確に穿設することができる。特に、保護板(1)の段付き深穴(14)には、同芯状に設けた座金(13)を有しているため、保護板(1)を穴の穿設用に使用する際に、金属製の座金(13)がドリルのガイドの役目を成し、穿設作業中にドリルでゴム製の保護板本体(11)を傷付ける心配がない。 In addition, when drilling the slot (2a) in the concrete structure (2), the protective plate for impact resistance (1) is temporarily installed at the installation location of the concrete structure (2). The protective plate (1) can be used as a jig for drilling the slot (2a), and the slot (2a) in the same arrangement as the stepped deep hole (14) of the protective plate (1) can be quickly and accurately Can be drilled. In particular, the stepped deep hole (14) of the protective plate (1) has a washer (13) provided concentrically so that the protective plate (1) can be used for drilling holes. In addition, the metal washer (13) serves as a guide for the drill, and there is no worry of damaging the rubber protective plate body (11) with the drill during drilling.
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耐衝撃用保護板の平面図、図4は本発明に使用する耐衝撃用保護板に設けた網状体と座金を示す斜視図、図5は本発明のゴム部材を被覆した取り付け方法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 a mounting method of the present invention, FIG. 2 is a cross-sectional view of an impact-resistant protective plate used in the present invention, FIG. 3 is a plan view of an impact-resistant protective plate used in the present invention, and FIG. FIG. 5 is an explanatory view showing a mounting method in which the rubber member of the present invention is covered. FIG.
図2、3は、本発明に使用する耐衝撃用保護板(1)を示している。この図中、(11)はゴム製の保護板本体であり、該保護板本体(11)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(11)に成形させるのがよい。 2 and 3 show an impact-resistant protective plate (1) used in the present invention. In this figure, (11) is a rubber protective plate main body, and the protective plate main body (11) 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 (11).
(12)は保護板本体(11)内に埋設した補強用及び後述する座金(13)を固定するための網状体である。この網状体(12)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(11)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で使用するのがよい。 (12) is a mesh for fixing a reinforcing member embedded in the protective plate body (11) and a washer (13) described later. This reticulate body (12) is made of metal and made of a round bar and has no corners, so there is little damage even if an impact is applied to the protective plate body (11). It is better to use it in combination.
(13)は金属製の座金であり、該座金(13)は、図4に示すように、網状体(12)に複数配列して溶接で固着させている。 (13) is a metal washer, and as shown in FIG. 4, a plurality of the washers (13) are arranged on the mesh body (12) and fixed by welding.
(14)は保護板本体(11)に穿設した段付き深穴であり、これは座金(13)が位置する箇所に設けている。また、段付き深穴(14)は、ボルト(4)の頭部(4a)が入る方の穴径を大きく、ボルト(4)のネジ部が入る方の穴径を小さくした段付き深穴であり、しかも頭部(4a)が入る穴側を深く穿設した段付き深穴(14)としている。これにより、ボルト(4)を締付けた状態では、頭部(4a)が段付き深穴(14)内に深く入に込んだ状態となる。また、段付き深穴(14)は、その段部の上に前記座金(13)が位置し、段付き深穴(14)は前記座金(13)と同芯状に穿設させている。 (14) is a stepped deep hole drilled in the protective plate body (11), which is provided at the location where the washer (13) is located. The stepped deep hole (14) is a stepped deep hole with a larger hole diameter for the head (4a) of the bolt (4) and a smaller hole diameter for the threaded part of the bolt (4). Moreover, a stepped deep hole (14) is formed by deeply drilling the hole side into which the head (4a) enters. As a result, when the bolt (4) is tightened, the head (4a) is deeply inserted into the stepped deep hole (14). Further, the stepped deep hole (14) has the washer (13) positioned on the stepped portion, and the stepped deep hole (14) is formed concentrically with the washer (13).
次に、上記の耐衝撃用保護板(1)を使用した本発明の取り付け方法の実施形態について、図1を基に説明する。先ず、コンクリート製構造物(2)で砂防ダムの頂面に耐衝撃用保護板(1)を取り付ける場合を例に説明すると、図1(a)に示すように、コンクリート製構造物(2)の頂面に複数の溝穴(2a)を穿設する。この穿設する際にはコンクリート製構造物(2)の頂面に耐衝撃用保護板(1)を置き、その段付き深穴(14)にドリルを挿入し、耐衝撃用保護板(1)を治具の代りにして、コンクリート製構造物(2)の頂面に段付き深穴(14)と同数の溝穴(2a)を穿設する。この穿設した溝穴(2a)は、耐衝撃用保護板(1)を溝穴(2a)の穿設用の治具代りに使用して穿設したものであるため、溝穴(2a)は段付き深穴(14)と同一な配列で穿設される。 Next, an embodiment of the mounting method of the present invention using the above-described protective plate for impact resistance (1) will be described with reference to FIG. First, the case where the protective plate (1) for impact resistance is attached to the top surface of the sabo dam with the concrete structure (2) will be described as an example. As shown in FIG. 1 (a), the concrete structure (2) A plurality of slots (2a) are drilled in the top surface of. When drilling, place an impact-resistant protective plate (1) on the top surface of the concrete structure (2), insert a drill into the stepped deep hole (14), and install the impact-resistant protective plate (1 In place of the jig, drill the same number of slots (2a) as the stepped deep holes (14) on the top surface of the concrete structure (2). This slot (2a) is made by using the shock-resistant protective plate (1) instead of the jig for drilling the slot (2a). Are drilled in the same arrangement as the stepped deep holes (14).
つまり、溝穴(2a)を穿設する位置は、段付き深穴(14)の配列する位置と同一でなければならないが、本発明のように、耐衝撃用保護板(1)を治具の代りとして使用することにより、極めて正確な位置に溝穴(2a)を穿設できるのである。 In other words, the position where the slot (2a) is to be drilled must be the same as the position where the stepped deep hole (14) is arranged. However, as in the present invention, the shock-resistant protective plate (1) is attached to the jig. By using it as an alternative, the slot (2a) can be drilled at a very precise position.
また、耐衝撃用保護板(1)を治具として溝穴(2a)の穿設に使用する際に、段付き深穴(14)内の金属製の座金(13)が、ドリルのガイドとなり、保護板本体(11)がドリルによって損傷を受けることがない。 Also, when using the shock-resistant protective plate (1) as a jig for drilling the slot (2a), the metal washer (13) in the stepped deep hole (14) serves as a guide for the drill. The protection plate body (11) is not damaged by the drill.
そして、溝穴(2a)を穿設したならば、図1(b)に示すように、溝穴(2a)内にインサートナット(3)を打ち込んで固着させる。 And if the slot (2a) was drilled, as shown in FIG.1 (b), an insert nut (3) will be driven and fixed in a slot (2a).
このインサートナット(3)を固着した後、図1(c)に示すように、耐衝撃用保護板(1)を、その段付き深穴(14)に挿入したボルト(4)をインサートナット(3)に螺合し締付けて固定させる。この状態においては、ボルト(4)の頭部(4a)は保護板本体(11)の表面(11a)より深く溝穴(2a)の奥内に没入している。従って、ボルト(4)は、岩石や流木等が保護板本体(11)に衝突しても、直接ボルト(4)に当らず損傷を受け難いので、耐衝撃用保護板(1)がコンクリート製構造物(2)から剥がれるのを防止できる。 After fixing the insert nut (3), as shown in FIG. 1 (c), the bolt (4) in which the shock-resistant protective plate (1) is inserted into the stepped deep hole (14) is inserted into the insert nut ( 3) Screw and tighten to fix. In this state, the head (4a) of the bolt (4) is deeper than the surface (11a) of the protection plate body (11) and is immersed in the back of the slot (2a). Therefore, the bolt (4) does not directly hit the bolt (4) even if rocks, driftwood, etc. collide with the protection plate body (11) and is not easily damaged. It can prevent peeling from the structure (2).
また、本発明の他の取り付け方法においては、上記した図1の取り付け方法をした後に、図5に示すように、段付き深穴(14)にゴム部材(5)を入れ、ボルト(4)の頭部(4a)を被覆する取り付け方法である。被覆に使用するゴム部材(5)は、液状のゴムを段付き深穴(14)内に注入し、固化させるか、またはゴム栓を段付き深穴(14)に挿入し、接着剤で固着させてもよい。このボルト(4)の頭部(4a)をゴム部材(5)で被覆した取り付け方法では、ボルト(4)が保護板本体(11)内に完全に埋設した状態となり、岩石や流木等がボルト(4)の部分に当っても、ゴム部材(5)がクッションとなってボルト(4)に直接衝撃が加わることがなく、より衝撃に強いものとなる。尚、ゴム部材(5)は、保護板本体(11)と同等な強度を有するゴム材が好ましい。 Moreover, in the other attachment method of this invention, after performing the attachment method of above-mentioned FIG. 1, as shown in FIG. 5, a rubber member (5) is put into a stepped deep hole (14), and a volt | bolt (4) It is the attachment method which coat | covers the head (4a). For the rubber member (5) used for coating, liquid rubber is injected into the stepped deep hole (14) and solidified, or a rubber plug is inserted into the stepped deep hole (14) and fixed with an adhesive. You may let them. In the mounting method in which the head (4a) of the bolt (4) is covered with the rubber member (5), the bolt (4) is completely embedded in the protective plate body (11), and rocks, driftwood, etc. are bolts. Even if it hits the portion of (4), the rubber member (5) becomes a cushion, and the impact is not directly applied to the bolt (4), so that it is more resistant to impact. The rubber member (5) is preferably a rubber material having the same strength as the protective plate body (11).
1 耐衝撃用保護板
11 保護板本体
11a 表面
12 網状体
13 座金
14 段付き深穴
2 コンクリート製構造物
2a 溝穴
3 インサートナット
4 ボルト
4a 頭部
5 ゴム部材
1 Shock-resistant protective plate
11 Protection plate body
11a surface
12 Mesh
13 Washer
14 Stepped deep hole 2 Concrete structure
2a Slot 3 Insert nut 4 Bolt
4a Head 5 Rubber member
Claims (2)
A rubber protection plate body (11), a mesh body (12) embedded in the protection plate body (11), a plurality of washers (13) fixed to the mesh body (12), and the washers ( Using the impact-resistant protective plate (1) having a stepped deep hole (14) drilled in the protective plate main body (11) at the location of 13), the concrete structure (2) is Slots (2a) having the same arrangement and number as the attached deep holes (14) are drilled, and insert nuts (3) are inserted and fixed in the slots (2a). The bolt (4) inserted into the stepped deep hole (14) is screwed into the insert nut (3) and tightened, and the shock-resistant protective plate (1) is attached to the concrete structure (2). After that, the head (4a) of the bolt (4) immersed in the stepped deep hole (14) is covered with a rubber member (5). A method of attaching an impact protection plate to the structure.
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| JP2008185687A JP4914873B2 (en) | 2008-07-17 | 2008-07-17 | Attaching impact-resistant protective plates to concrete structures |
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| JP2008185687A JP4914873B2 (en) | 2008-07-17 | 2008-07-17 | Attaching impact-resistant protective plates to concrete structures |
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| CN107338722A (en) * | 2017-07-12 | 2017-11-10 | 中铁第四勘察设计院集团有限公司 | The anti-fall girder construction of assembled, anti-fall girder apparatus and bridge |
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| JPH0826581B2 (en) * | 1990-08-29 | 1996-03-13 | 西武ポリマ化成株式会社 | Abrasion resistant concrete structure for sewerage facilities |
| JP3596648B2 (en) * | 1996-12-16 | 2004-12-02 | シバタ工業株式会社 | Structure protection structure and joint protection material |
| JP2000054348A (en) * | 1998-08-11 | 2000-02-22 | Mitsubishi Material Kenzai Corp | Block for checkdam |
| JP2001336136A (en) * | 2000-05-30 | 2001-12-07 | Tokiwa Rubber Kk | Rubber pad fitting structure for scouring prevention and washer used therefor |
| JP2003239256A (en) * | 2002-02-13 | 2003-08-27 | Takamura Sogyo Kk | Rubber-made impact resisting residual form |
| JP3875645B2 (en) * | 2003-02-21 | 2007-01-31 | 西武ポリマ化成株式会社 | Wear-resistant plate for concrete in running water facilities |
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