JPH0344162B2 - - Google Patents
Info
- Publication number
- JPH0344162B2 JPH0344162B2 JP13603084A JP13603084A JPH0344162B2 JP H0344162 B2 JPH0344162 B2 JP H0344162B2 JP 13603084 A JP13603084 A JP 13603084A JP 13603084 A JP13603084 A JP 13603084A JP H0344162 B2 JPH0344162 B2 JP H0344162B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- sheath tube
- sheath
- hole
- space
- 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
- 239000003566 sealing material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000000565 sealant Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000013016 damping Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004078 waterproofing Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【発明の詳細な説明】
〔発明の背景〕
近年、斜張橋のケーブルは、定着部構造の単純
化や美観上の理由から、従来の大断面少数ケーブ
ルから小断面複数多段ケーブルに変わる傾向にあ
り、断面形状も多様化している。さらに構造の巨
大化に伴つてケーブルの振動数および減衰率も低
下し、橋桁の耐風安定性だけでなく、ケーブル自
体の耐風安定性が問題になつてきている。この発
明は、小断面多段ケーブル形式の２径間連続斜張
橋に採用するケーブルの制振防水を目的とした定
着部の施工方法である。[Detailed Description of the Invention] [Background of the Invention] In recent years, the cables of cable-stayed bridges have tended to change from conventional large cross-section few cables to small cross-section multiple multi-stage cables due to the simplification of the anchorage structure and aesthetic reasons. Yes, and the cross-sectional shapes are also diversifying. Furthermore, as the structure becomes larger, the vibration frequency and damping rate of the cable decrease, and the wind resistance stability of the cable itself, as well as the wind resistance of the bridge girder, becomes a problem. The present invention is a method for constructing an anchorage part for the purpose of vibration damping and waterproofing of a cable employed in a two-span continuous cable-stayed bridge of a small cross-section multi-stage cable type.
定着部のシース管にケーブルを挿通したとき、
ケーブルとシース管の間にスペースを形成して組
立てておき、ついでシース管周辺を密閉しコーキ
ングした後、前記のシース管内スペースに弾性シ
ーリング材を注入充てんする。
When the cable is inserted into the sheath tube of the fixing section,
A space is formed between the cable and the sheath tube for assembly, and then the periphery of the sheath tube is sealed and caulked, and then an elastic sealing material is injected and filled into the space inside the sheath tube.
これにより、設計上の充てん空間はもとより、
建設の結果として生じる微細な空間にまでシーリ
ング材を充てんすることができ、制振、防水効果
が高い。 As a result, not only the designed filling space but also
The sealant can be filled into even the smallest spaces created as a result of construction, and has high vibration damping and waterproofing effects.
本発明において完成する構造は図に示す定着部
構造１である。まずこれについて説明する。な
お、主桁側も主塔側もほぼ同様な構造となる。
The structure completed in the present invention is the fixing section structure 1 shown in the figure. First, let me explain this. The main girder side and the main tower side have almost the same structure.
図において、記号２はケーブル、３はシース
管、４はケーブル２の外周をとり巻くバツクアツ
プ材でその周辺にスペーサー５を備えている。 In the figure, symbol 2 is a cable, 3 is a sheath tube, and 4 is a backup material surrounding the outer periphery of the cable 2, around which a spacer 5 is provided.
このスペーサー５によつて、バツクアツプ材が
シース管のほぼ中央に位置決めされることにな
り、充填する弾性シーリング材の厚みを一定に保
つことができる。記号６はケーブルソケツトでケ
ーブル２の基端に固定されている。７はゴムダン
パーで複数枚が重ねられ、シース管３に固定され
た押え金８で押圧されている。なお、記号９はエ
アポンプで弾性シール材を空気圧で送り出すもの
である。 This spacer 5 allows the backup material to be positioned approximately at the center of the sheath tube, so that the thickness of the filled elastic sealant can be kept constant. Symbol 6 is a cable socket fixed to the base end of the cable 2. A plurality of rubber dampers 7 are stacked one on top of the other and pressed with a presser foot 8 fixed to the sheath tube 3. Note that the symbol 9 is an air pump that pumps out the elastic sealing material using air pressure.
さて、実際の施工としては、まず、主桁および
主塔に固定されたシース管３にケーブル２を挿通
してその基端部にケーブルソケツト６を固着す
る。これでケーブル２はシース管３に係合する。
ついでバツクアツプ材４をケーブル２に被せて
（多くは半割りタイプ）シース管内に押し込み、
ケーブル２とシース管３とのスペースを保持す
る。ついでゴムダンパー７を押し込み（ゴムダン
パーも多くは半割りタイプ）シース管３に固定し
た押え金８で押圧固定する。シース管３の基端部
はソケツト６ですでに閉じられているので、シー
ス管３内にケーブル２とシース管３とのスペース
を保持する第１段階が終了する。なお、このとき
のゴムダンパー７には通孔１０が貫通されてい
る。 Now, for actual construction, first, the cable 2 is inserted through the sheath pipe 3 fixed to the main girder and the main tower, and the cable socket 6 is fixed to the base end thereof. The cable 2 is now engaged with the sheath tube 3.
Next, cover the cable 2 with a backup material 4 (mostly a half-split type) and push it into the sheath pipe.
A space between the cable 2 and the sheath pipe 3 is maintained. Next, the rubber damper 7 is pushed in (most rubber dampers are of the half-split type) and fixed with a presser foot 8 fixed to the sheath tube 3. Since the proximal end of the sheath tube 3 has already been closed with the socket 6, the first stage of maintaining the space between the cable 2 and the sheath tube 3 within the sheath tube 3 is completed. Note that the rubber damper 7 at this time has a through hole 10 penetrated therethrough.
上記のようにしてケーブル２の両端が主塔およ
び主桁に定着された後、第２段階としてシース管
周囲を充分にコーキングする。 After both ends of the cable 2 are fixed to the main tower and main girder as described above, the second step is to sufficiently caulk the area around the sheath pipe.
ついで最終段階として、前記の通孔１０より弾
性シーリング材を注入しスペースを充てんする。
主塔側シース管へ注入の場合には、ソケツト６が
上方に位置することからソケツト側のシース管端
部に空気抜孔１１を設けておく。一方、主桁側シ
ース管へ注入の場合は、押え金具８が上方に位置
するから、押え金具側シース管の端部に空気抜孔
１２を設けておく。 Then, as a final step, an elastic sealing material is injected through the through hole 10 to fill the space.
When injecting into the main tower side sheath pipe, since the socket 6 is located above, an air vent hole 11 is provided at the end of the sheath pipe on the socket side. On the other hand, when injecting into the sheath tube on the main girder side, since the presser fitting 8 is located above, an air vent hole 12 is provided at the end of the sheath tube on the presser fitting side.
シーリング材の注入に際しては、押え金８にあ
らかじめ前記通孔１０に通じるタツプ孔を設けて
おきこれに塩ビパイプをねじ込むなどして取りつ
け、ホースを接続するようにする。実際の注入は
外気温０〜５℃のとき注入圧力は2.5〜4.0Kg／cm2
を要し、注入時間は３〜５分／本であつた。注入
時の外気温が極端に低いときはシース管３あるい
はシース管３あるいは弾性シーリング材を予熱し
ておく必要がある。また、注入のための通孔１０
およびパイプの径は太い程よく、主塔側では下方
から上方へ、主桁側では上方から下方へ注入する
のが作業もしやすく好しい。 When injecting the sealant, a tap hole communicating with the through hole 10 is provided in advance in the presser foot 8, and a PVC pipe is screwed into the tap hole and a hose is connected to the tap hole. In actual injection, when the outside temperature is 0 to 5℃, the injection pressure is 2.5 to 4.0Kg/cm 2
The injection time was 3 to 5 minutes/tube. If the outside temperature at the time of injection is extremely low, it is necessary to preheat the sheath tube 3 or the elastic sealing material. Also, a through hole 10 for injection.
The larger the diameter of the pipe, the better.It is preferable to inject from the bottom to the top on the main tower side and from the top to the bottom on the main girder side for ease of operation.
弾性シール材を注入した後は、シール材の付着
した所の汚れを落とし、清掃を行う、そして、弾
性シール材が硬化した後に前記の注入用塩ビパイ
プを取り外す。 After injecting the elastic sealant, the area to which the sealant has adhered is cleaned and cleaned, and after the elastic sealant has hardened, the PVC pipe for injection is removed.
本発明の施工方法によれば、バツクアツプ材お
よびスペーサーにより、ケーブルとシース管の間
に充分なスペースが均等に確保されており、後か
ら注入する弾性シーリング材の充てん程度が高
く、したがつて、目的とした構造が発揮すべきケ
ーブル定着部における制振防水効果が高い。ま
た、本発明の施工方法ではケーブルの両端が主
塔、主桁に建設された後に弾性シーリング材の注
入充てんが行なわれるので、設計では見落とされ
るかあるいは無視されるような実際上の微細な空
間にまでシーリング材の充てんが行なわれるので
制振防水の効果、特に雨水の浸透を防止する効果
が大きい。
According to the construction method of the present invention, sufficient space is evenly secured between the cable and the sheath pipe by the back-up material and the spacer, and the degree of filling with the elastic sealant injected later is high. It has a high vibration damping and waterproofing effect in the cable anchorage part where the intended structure should be exhibited. In addition, in the construction method of the present invention, elastic sealing material is injected and filled after both ends of the cable are constructed in the main tower and main girder, so it is possible to eliminate small spaces in reality that are overlooked or ignored in the design. Since the sealing material is filled up to the top, it has a great vibration damping and waterproofing effect, especially in preventing rainwater from penetrating.
図は、内部を示す正面図であつて、ポンプが模
式的に接続されている。
１……定着部構造、２……ケーブル、３……シ
ース管、４……バツクアツプ材、５……スペーサ
ー、６……ソケツト、７……ゴムダンパー、８…
…押え金、９……ポンプ、１０……通孔。
The figure is a front view showing the inside, and the pumps are schematically connected. DESCRIPTION OF SYMBOLS 1... Fixing part structure, 2... Cable, 3... Sheath pipe, 4... Backup material, 5... Spacer, 6... Socket, 7... Rubber damper, 8...
...Presser foot, 9...Pump, 10...Through hole.
Claims (1)
シース管に挿通して係合させ、上記シース管に空
気抜孔を設けておき、ケーブルとシース管の間に
バツクアツプ材およびスペーサーとでスペースを
保持しておいて、シース管先端部に通孔を貫通さ
せたゴムダンパーを挿入する第１段階と、シース
管周囲を充分にコーキングする第２段階および主
桁側と主塔側の定着部が同様にして固定されてか
ら、上記通孔より弾性シーリング材をシース管内
のスペースに充填する第３段階とからなる、斜張
橋に於けるケーブル定着部の施工方法。1. Insert and engage a cable with a socket fixed at its base end into the fixing sheath tube, provide an air vent hole in the sheath tube, and maintain a space between the cable and the sheath tube with a backup material and a spacer. The first step is to insert a rubber damper with a through hole through the tip of the sheath pipe, the second step is to sufficiently caulk the area around the sheath pipe, and the fixing parts on the main girder side and the main tower side are done in the same way. A method for constructing a cable anchorage in a cable-stayed bridge, the method comprising the third step of filling the space within the sheath pipe with an elastic sealing material through the through hole after the cable is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13603084A JPS6114309A (en) | 1984-06-29 | 1984-06-29 | Construction of cable anchor part in suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13603084A JPS6114309A (en) | 1984-06-29 | 1984-06-29 | Construction of cable anchor part in suspension bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6114309A JPS6114309A (en) | 1986-01-22 |
| JPH0344162B2 true JPH0344162B2 (en) | 1991-07-05 |
Family
ID=15165537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13603084A Granted JPS6114309A (en) | 1984-06-29 | 1984-06-29 | Construction of cable anchor part in suspension bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6114309A (en) |
-
1984
- 1984-06-29 JP JP13603084A patent/JPS6114309A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114309A (en) | 1986-01-22 |
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