JPH0262641B2 - - Google Patents
Info
- Publication number
- JPH0262641B2 JPH0262641B2 JP10359585A JP10359585A JPH0262641B2 JP H0262641 B2 JPH0262641 B2 JP H0262641B2 JP 10359585 A JP10359585 A JP 10359585A JP 10359585 A JP10359585 A JP 10359585A JP H0262641 B2 JPH0262641 B2 JP H0262641B2
- Authority
- JP
- Japan
- Prior art keywords
- web
- backup material
- backup
- construction method
- sealing material
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 29
- 239000003566 sealing material Substances 0.000 claims description 20
- 239000000565 sealant Substances 0.000 claims description 12
- 230000008602 contraction Effects 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims 1
- 238000005238 degreasing Methods 0.000 claims 1
- -1 polyethylene Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Description
【発明の詳細な説明】
〔技術分野〕
この発明は、道路橋等の鋼製高架構造物におけ
る鋼製伸縮装置の非排水化、すなわち、伸縮装置
へ雨水等が流れ込まない構造にして排水設備、樋
等を除去するための工法に関する。[Detailed Description of the Invention] [Technical Field] The present invention provides non-drainage of steel expansion and contraction devices in steel elevated structures such as road bridges, that is, drainage equipment with a structure that prevents rainwater etc. from flowing into the expansion and contraction device. Concerning construction methods for removing gutters, etc.
道路橋等における鋼製伸縮装置は従来、殆んど
が雨水等の流入をやむを得ないものとし、ウエブ
遊間に集水樋等を設けて対処している。しかし、
このような伸縮部からの漏水は避けられず、桁、
支承、橋脚等が発錆し破損するなど高架構造物へ
の悪影響が大きくなつてきて、近年、伸縮装置に
おける止水機能が重要視されるようになつてき
た。
Conventionally, most steel expansion/contraction devices for road bridges and the like have unavoidable inflow of rainwater, and this has been dealt with by providing water collection gutters etc. between the web gaps. but,
Water leakage from such expansion and contraction parts is unavoidable, and girders,
In recent years, the water-stopping function of expansion and contraction devices has become more important as the negative impact on elevated structures, such as rusting and damage of bearings, piers, etc., has been increasing.
止水機能の高い伸縮装置としては、ゴム製伸縮
装置があげられるが、最近では鋼製伸縮装置に弾
性シール材を充てんすることにより止水機能をも
たせた構造が採用されつつある。このような構造
の伸縮装置を一般的に非排水型と称し、弾性シー
ル材の充てん構造として種々のものが存在する
が、殆んどが弾性シール材の充てんを工場で行つ
ておく、いわば新設伸縮装置に限るものである。 An example of an elastic device with a high water-stopping function is a rubber elastic device, but recently, a structure in which a steel elastic device is filled with an elastic sealant to provide a water-stopping function is being adopted. Expandable devices with this type of structure are generally referred to as non-drainage type, and there are various types of elastic sealant filling structures, but most of them are filled with elastic sealant at a factory, so to speak, as new construction. This is limited to telescoping devices.
本発明は既設の排水型伸縮装置をそのまま非排
水型へ転化できる工法の提供を目的とする。
The object of the present invention is to provide a construction method that can convert an existing drainage type expansion and contraction device into a non-drainage type.
本発明による工法の基本的構成は、既設の鋼製
伸縮装置におけるフエースプレート等の主たる構
造は破壊することなく、伸縮部の下面（ウエブ遊
間）から全ての作業を済ますことであつて、ま
ず、ウエブ遊間の清掃、ウエブ面の表面処理、フ
エースプレート裏面の密閉とバツクアツプ材の設
置による弾性シール材の充てん空間の画定、シー
ル材の充てん養生、およびバツクアツプ材の除
去、仕上げの各工程を骨子としている。具体的構
成については以下の実施例の説明において具体的
に述べる。
The basic structure of the construction method according to the present invention is to complete all work from the bottom surface (web gap) of the telescopic part without destroying the main structure such as the face plate of the existing steel telescopic equipment. The main steps are cleaning the web gap, surface treatment of the web surface, sealing the back of the face plate and setting the back-up material to define the space for filling the elastic sealing material, filling and curing the sealing material, removing the back-up material, and finishing. There is. The specific configuration will be specifically described in the description of the embodiment below.
図と共に工程順に説明を進める。 The explanation will proceed in the order of the steps along with the drawings.
既設の鋼製伸縮装置の断面は第２図の如く、
フエースプレート１の下部に形成されたウエブ
空間２に樋３が設けられている。また、ウエブ
空間２に露出したウエブ面４やフエースプレー
ト１の裏面には相当の錆が、樋３内には土砂等
の堆積が見られるのが普通である。そこで、ま
ず、非排水型としては不用となる樋３等の不用
既設備を溶断して除去し、ついで、フエースプ
レート１裏面やウエブ面４に付着している土
砂、ゴミ、錆などをワイヤーブラシ、ウエス等
を用いて清掃する。 The cross section of the existing steel expansion and contraction device is shown in Figure 2.
A gutter 3 is provided in a web space 2 formed at the bottom of the face plate 1. Further, it is common to find considerable rust on the web surface 4 exposed to the web space 2 and the back surface of the face plate 1, and to find dirt and sand deposited inside the gutter 3. Therefore, first, we cut and remove unnecessary existing equipment such as the gutter 3, which is unnecessary for the non-drainage type, and then use a wire brush to remove dirt, dust, rust, etc. that have adhered to the back of the face plate 1 and the web surface 4. , clean with a rag, etc.
ウエブ面４は弾性シール材が接着する個所で
あるので、サンダーを用いて錆が見えなくなる
まで充分に錆落しを行い、その後にトルオール
などの溶剤を用いて表面の汚れや油分を脱脂洗
滌する。 Since the web surface 4 is the part to which the elastic sealing material is bonded, the rust is sufficiently removed using a sander until the rust is no longer visible, and then the dirt and oil on the surface is degreased and washed using a solvent such as toluene.
フエースプレート裏面から上方へ抜ける間隙
をガムテープ５やポリエステルフイルムを用い
て密閉する（第３図）。これは鋼製伸縮装置に
は横断方向の傾斜がついているため、後の工程
で弾性シール材を注入したとき、フエースプレ
ート部からシール材が路面へ漏れてしまうのを
防止するためである。 The gap extending upward from the back of the face plate is sealed using gummed tape 5 or polyester film (Fig. 3). This is to prevent the sealant from leaking from the face plate portion onto the road surface when the elastic sealant is injected in a later step, since the steel telescopic device has a slope in the transverse direction.
そして、前工程で清掃済みのウエブ面４に接
着剤６を塗布する。ウレタン系又はエポキシ系
の接着剤を１m2当り約50〜500ｇ用いる。この
接着剤は二液型で可使用時間は20分〜24時間で
ありこの工法に適格である。 Then, adhesive 6 is applied to the web surface 4 that has been cleaned in the previous step. Approximately 50 to 500 g of urethane or epoxy adhesive is used per square meter. This adhesive is a two-component type with a usable time of 20 minutes to 24 hours, making it suitable for this method.
なお、この工程時にウエブ面へ次工程のバツ
クアツプ材セツト時の目印としてセツト位置の
マーキングを行つておくと接着剤の塗布にも都
合がよく塗布面の不足や無駄が生じない。 It should be noted that if a setting position is marked on the web surface during this step as a mark for setting the backup material in the next step, it will be convenient for applying the adhesive and there will be no shortage or waste of the coated surface.
フエースプレート１から一定の間隔をとつて
バツクアツプ材７をセツトする（第１図）。バ
ツクアツプ材７は表面に剥離紙８を備えたもの
で、長さは道路の幅員、つまり、車道幅に等し
い。バツクアツプ材としては三和化工(株)の商品
名サンペルカL2500が好適である。ウエブ面４
に対するセツトのしかたとしては接着等種々な
方法があるが、第４図のように30×30程度の角
木材９をウエブ面４へ接着しその上にセツトす
ることもある。第１図は接着による場合でバツ
クアツプ材７とウエブ面４との間隙には発泡性
のウレタンを注入しコーキング処理する。 Backup material 7 is set at a constant distance from face plate 1 (FIG. 1). The backup material 7 has a release paper 8 on its surface, and its length is equal to the width of the road, that is, the width of the roadway. As the back-up material, Sanperka L2500, a trade name manufactured by Sanwa Kako Co., Ltd., is suitable. Web surface 4
There are various methods for setting the web, such as gluing, but as shown in FIG. 4, a square piece of wood 9 of about 30 x 30 may be glued to the web surface 4 and set on top of it. FIG. 1 shows a case where adhesive is used, and foamable urethane is injected into the gap between the backup material 7 and the web surface 4 and caulking is performed.
なお、第１図の場合にしても、第４図の場合
にしても、弾性シール材注入時の注入圧および
弾性シール材の自重によりバツクアツプ材７が
脱落しないようにベニア板などの当て材１０と
これを支えるバネ材１１からなるバツクアツプ
材のバツクアツプ構成を採用しておくと安全で
ある。 In addition, in both the case of FIG. 1 and the case of FIG. 4, a backing material 10 such as a plywood board is used to prevent the backup material 7 from falling off due to the injection pressure when injecting the elastic sealant and the weight of the elastic sealant. It is safe to adopt a back-up structure of a back-up material consisting of a spring material 11 that supports this.
第５図に示すものはＬ型フラツトバー１７を
利用するタイプのもので、この場合はバツクア
ツプ材７として図のように両側下面に下垂する
縁部１８を有するものを用いる。そして、バツ
クアツプ材７のセツトは前記の縁部１８をＬ型
フラツトバー１７でウエブ面４間に挟み込み、
ついでこのＬ型フラツトバー１７をボルト等で
ウエブ面４へ固定することにより行う。このよ
うにするとＬ型フラツトバー１７を固定するた
めのボルトをウエブ面４にあらかじめ設けてお
くなどの処置が必要であるが、バツクアツプ材
のセツトは確実でしかも、側面はウエブ面４に
密着し、コーキング等の手間は無い。さらにこ
のままで比較的大きな荷重に対向できる。 The one shown in FIG. 5 is of the type that utilizes an L-shaped flat bar 17. In this case, the backup member 7 has edges 18 hanging down on both sides as shown in the figure. Then, the backup material 7 is set by sandwiching the edge 18 between the web surfaces 4 with the L-shaped flat bar 17.
Next, this L-shaped flat bar 17 is fixed to the web surface 4 with bolts or the like. In this way, it is necessary to take measures such as installing bolts in advance on the web surface 4 for fixing the L-shaped flat bar 17, but the back-up material can be set reliably, and the side surfaces are in close contact with the web surface 4. There is no need for caulking, etc. Furthermore, it can withstand relatively large loads as it is.
さらにこの実施例では、バツクアツプ材７に
弾性シール材を注入するための注入口１２を塩
ビパイプ等で設けている。注入口１２は第６図
に示すように一本のバツクアツプ材７に数個所
設ける。記号１３は弾性シール材の溢出口でシ
ール材の充満を確認するためのものである。 Furthermore, in this embodiment, an injection port 12 for injecting the elastic sealing material into the backup material 7 is provided with a PVC pipe or the like. The injection ports 12 are provided at several locations in one backup material 7, as shown in FIG. Symbol 13 is for confirming that the sealing material is full at the overflow port of the elastic sealing material.
このようにして形成されたフエースプレート
１とバツクアツプ材７間の空間に弾性シール材
１４を未硬化の流動状態で注入する（第７図、
第１図）。このとき、バツクアツプ材７に注入
口１２が設けられておれば、注入口１２に注入
用ホース１５を差し込み他端を圧入器に接続す
れば良い。注入は第６図にも示すように複数個
所から行うことも可能で末端の注入完了確認パ
イプ１３からシール材が出てくるまで行う。注
入が完了したら各ホース１５に連結してあるコ
ツク１６を閉じて未硬化の弾性シール材が逆流
しないようにする。 The elastic sealing material 14 is injected in an uncured fluid state into the space between the face plate 1 and the backup material 7 thus formed (see FIG.
Figure 1). At this time, if the backup material 7 is provided with an injection port 12, the injection hose 15 may be inserted into the injection port 12 and the other end may be connected to a press fitter. Injection can be performed from multiple locations as shown in FIG. 6, and is continued until the sealing material comes out from the injection completion confirmation pipe 13 at the end. When the injection is completed, the pots 16 connected to each hose 15 are closed to prevent the uncured elastic sealing material from flowing back.
弾性シール材１４としては液状ポリブタジエ
ン系シール材が好適である。このシール材を充
分に混合撹拌した後に圧入器で２〜３Kg／cm2程
度の圧力で注入する。 As the elastic sealing material 14, a liquid polybutadiene sealing material is suitable. After thoroughly mixing and stirring this sealing material, it is injected with a pressurizer at a pressure of about 2 to 3 kg/cm 2 .
弾性シール材の注入後はそのまま少なくとも
24時間の養生を行い、弾性シール材の硬化をま
つ。 After injecting the elastic sealant, leave it as it is at least
Cured for 24 hours to allow the elastic sealant to harden.
バツクアツプ材７や角木材９等を撤去し、シ
ール材の付着による汚れなどを清掃して仕上げ
をする。 The back up material 7, corner wood 9, etc. are removed, and the stains caused by the adhesion of the sealing material are cleaned and finished.
(a) 以上から明らかなように、本発明による非排
水化工事は、全て伸縮装置の下面から行なえる
ので交通規則を必要とせず、交通渋滞を防ぐこ
とができる。
(a) As is clear from the above, the non-drainage construction work according to the present invention can be performed entirely from the bottom of the expansion and contraction device, so traffic rules are not required and traffic congestion can be prevented.
(b) 既設伸縮装置へ簡単に、かつ、確実に施工で
きる。(b) Can be easily and reliably installed on existing expansion and contraction equipment.
(c) ウエブ面を充分に表面処理した後接着剤を塗
布しその後に弾性シール材を充てんするのでウ
エブとシール材との接着がきわめて良好で高度
な止水機能を発揮する。(c) Adhesive is applied after the web surface has been sufficiently treated, and then the elastic sealant is filled, so that the adhesion between the web and the sealant is extremely good, and a high level of water-stopping function is achieved.
(d) 付加的であるが、弾性シール材の充てんによ
り橋下の騒音が約20dB低下した。(d) Additionally, the noise under the bridge was reduced by approximately 20 dB by filling with elastic sealing material.
(e) また、弾性シール材は防錆効果がありウエブ
遊間に面する構造物表面の発錆を防止できる。(e) In addition, the elastic sealing material has a rust-preventing effect and can prevent rust from forming on the surface of the structure facing the web gaps.
(f) 繰返し引張圧縮疲労試験の結果を次に示す。(f) The results of the repeated tension compression fatigue test are shown below.
試験条件
ウエブ面の移動量 ±10〓
繰返し回数 45，000回
試験温度 室温
試験日数 約３日
試験結果
(1) 圧縮時における弾性シール材の盛り上がり
は認められなかつた。Test conditions Amount of web surface movement ±10〓 Number of repetitions 45,000 times Test temperature Room temperature test days Approximately 3 days Test results (1) No swelling of the elastic sealing material was observed during compression.
(2) 45，000回の繰返し伸縮疲労試験後も剥離、
亀裂などの異常は認められなかつた。 (2) No peeling even after 45,000 repeated stretching/contraction fatigue tests.
No abnormalities such as cracks were observed.
(3) 以上により、現場での耐久性を一応確認で
きる。 (3) From the above, durability can be confirmed on site.
第１〜４図はウエブ遊間の側面図。第５図は伸
縮継手部を道路横断方向で断面にした概略図。第
６図および第７図は注入状況を説明するための概
略図。
１：フエースプレート、２：ウエブ遊間、３：
樋、４：ウエブ面、５：ガムテープ等、６：接着
剤、７：バツクアツプ材、８：剥離紙、９：角木
材、１０：ベニヤ板、１１：バネ材、１２：注入
口、１３：溢出口、１４：弾性シール材、１５：
注入用ホース、１６：コツク、１７：Ｌ型フラツ
トバー、１８：縁部
Figures 1 to 4 are side views of the web slot. FIG. 5 is a schematic cross-sectional view of the expansion joint section taken in the road-crossing direction. FIG. 6 and FIG. 7 are schematic diagrams for explaining the injection situation. 1: Face plate, 2: Web play area, 3:
Gutter, 4: Web surface, 5: Gum tape, etc., 6: Adhesive, 7: Backup material, 8: Release paper, 9: Square wood, 10: Plywood board, 11: Spring material, 12: Inlet, 13: Overflow port , 14: Elastic sealing material, 15:
Injection hose, 16: Kotoku, 17: L-shaped flat bar, 18: Edge
Claims (1)
れたウエブ遊間へ弾性シール剤を充てんし密着さ
せる工法であつて、次の工程からなることを特徴
としたもの、 ウエブ遊間における不用既設備の除去および
該遊間に露出している全ての面の清掃、 ウエブ面の錆落し、脱脂洗浄等の表面処理、 ウエブ面に接着剤を塗布し、また、フエース
プレート裏面を密閉する、 ウエブ間に離型紙付きのバツクアツプ材をセ
ツト、 フエースプレートとバツクアツプ材間に弾性
シール材を未硬化の流動状態で圧入した後、硬
化が完了するまで養生、 バツクアツプ材の除去、仕上げ。 ２ 特許請求の範囲１に記載の工法であつて、工
程におけるバツクアツプ材のセツト時に、セツ
トとしたバツクアツプ材とウエブ間の間隙に発泡
ウレタン又は発泡ポリエチレンを用いてコーキン
グ処理することを特徴とした工法。 ３ 特許請求の範囲１に記載の工法であつて、工
程においてセツトされたバツクアツプ材は、上
方からの充填シール材の荷重に対応してさらにバ
ツクアツプされていることを特徴とした工法。 ４ 特許請求の範囲１に記載の工法であつて、工
程で用いるバツクアツプ材に弾性シール材の注
入用注入口が設けられていることを特徴とした工
法。 ５ 特許請求の範囲１に記載の工法であつて、工
程におけるバツクアツプ材は両側下面に下垂し
た縁部を有し、バツクアツプ材のセツトはこの縁
部をＬ型フラツトバーで対応するウエブ面間に挟
み込み、Ｌ型フラツトバーをボルト等の固着具で
ウエブに固定することにより行うことを特徴とし
たもの。[Scope of Claims] 1. A method of filling and adhering an elastic sealant to a web gap in which a steel expansion/contraction device is installed in an elevated structure, which is characterized by comprising the following steps: Removal of unused existing equipment and cleaning of all surfaces exposed between the gaps, surface treatment such as removing rust from the web surface, degreasing and cleaning, applying adhesive to the web surface, and sealing the back of the face plate. , Set the back-up material with release paper between the webs, press-fit the elastic sealing material between the face plate and the back-up material in an uncured fluid state, then cure until complete curing, remove the back-up material, and finish. 2. The construction method according to claim 1, characterized in that when the backup material is set in the process, the gap between the set backup material and the web is caulked using foamed urethane or foamed polyethylene. . 3. The construction method according to claim 1, characterized in that the backup material set in the process is further backed up in response to the load of the filling sealing material from above. 4. The construction method according to claim 1, characterized in that the backup material used in the process is provided with an inlet for injecting the elastic sealing material. 5. The construction method according to claim 1, in which the backup material in the process has hanging edges on the lower surface of both sides, and the backup material is set by sandwiching this edge between the corresponding web surfaces with an L-shaped flat bar. , which is characterized by fixing the L-shaped flat bar to the web using fixing devices such as bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10359585A JPS6213602A (en) | 1985-05-15 | 1985-05-15 | Non-drainage construction method of extensible apparatus made of steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10359585A JPS6213602A (en) | 1985-05-15 | 1985-05-15 | Non-drainage construction method of extensible apparatus made of steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6213602A JPS6213602A (en) | 1987-01-22 |
| JPH0262641B2 true JPH0262641B2 (en) | 1990-12-26 |
Family
ID=14358118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10359585A Granted JPS6213602A (en) | 1985-05-15 | 1985-05-15 | Non-drainage construction method of extensible apparatus made of steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6213602A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100835339B1 (en) | 2007-02-27 | 2008-06-04 | (주)내경엔지니어링 | Hollow type bridge pier drain structure |
| JP5766545B2 (en) * | 2011-08-12 | 2015-08-19 | ニッタ株式会社 | Expansion joint for bridge |
| JP6043121B2 (en) * | 2012-08-10 | 2016-12-14 | ニッタ株式会社 | Construction method of waterstop material for road bridge expansion and contraction device and road bridge expansion and contraction device |
| JP6899551B2 (en) * | 2017-06-01 | 2021-07-07 | ビルドメンテック株式会社 | How to repair joints |
-
1985
- 1985-05-15 JP JP10359585A patent/JPS6213602A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6213602A (en) | 1987-01-22 |
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