JPH07127009A - Construction method for continuous concrete pavement - Google Patents
Construction method for continuous concrete pavementInfo
- Publication number
- JPH07127009A JPH07127009A JP30111293A JP30111293A JPH07127009A JP H07127009 A JPH07127009 A JP H07127009A JP 30111293 A JP30111293 A JP 30111293A JP 30111293 A JP30111293 A JP 30111293A JP H07127009 A JPH07127009 A JP H07127009A
- Authority
- JP
- Japan
- Prior art keywords
- continuous
- concrete pavement
- concrete
- specific section
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Road Paving Structures (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地盤条件の異なる部分
にまたがって道路や滑走路等の目地なし連続コンクリー
ト舗装を施すための工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for applying continuous concrete-free pavement for joints such as roads and runways across different ground conditions.
【０００２】[0002]
【従来の技術】従来、目地のないコンクリート舗装して
連続鉄筋コンクリート舗装が一般的に知られている。こ
れは、鉄筋をコンクリート舗装版の版厚の中央より上側
に長手方向に連続させて配置し、コンクリートの乾燥収
縮等に起因するひび割れを発生させ、通常のコンクリー
ト舗装に用いられている収縮目地をなくしたものであ
る。この工法では鉄筋はひび割れを分散させて誘発させ
る目的のみに使用されるため、多量に使用されるにも拘
らず、コンクリート舗装版自体の耐力がそれ程大きくな
らず、鉄筋を使用しないコンクリート舗装の場合とさほ
ど耐力が大きくならないという不経済な面があった。2. Description of the Related Art Conventionally, continuous reinforced concrete pavement is generally known as a concrete pavement without joints. This is because the reinforcing bars are arranged continuously above the center of the plate thickness of the concrete paving plate in the longitudinal direction to generate cracks due to drying shrinkage of the concrete, etc., and shrink joints used for ordinary concrete paving I lost it. In this method, the reinforcing bars are used only for the purpose of inducing cracks by dispersing them, so the concrete pavement itself does not have such a large yield strength, even if it is used in large amounts. There was an uneconomical aspect that the yield strength did not increase so much.
【０００３】かかる欠点を改善できるものとして、近年
従来のひび割れの分散誘発のための鉄筋の代りにＰＣ鋼
材を使用し、これをコンクリート舗装版の版厚の中央よ
り下側に埋め込むことによりひび割れ分散誘発と垂直荷
重に対して引張方向に作用させる補強材と兼用させた連
続コンクリート舗装工法（特願平５−４３３０７号）が
開発されている。In order to improve such a defect, in recent years, a PC steel material has been used in place of the conventional reinforcing bar for inducing the dispersion of cracks, and this is embedded below the center of the plate thickness of a concrete paving plate to disperse the cracks. A continuous concrete pavement method (Japanese Patent Application No. 5-43307) has been developed, which also serves as a reinforcing material that acts in the tensile direction with respect to induction and vertical load.
【０００４】[0004]
【発明が解決しようとする課題】一般に連続コンクリー
ト舗装は、数キロメートルの長さを伸縮目地を設けない
で連続施工するものであり、このため、全長の内の一部
には地盤条件が著しく異なる場合がある。例えば、沼地
等の軟弱な地盤を埋め立てたため、将来大きな沈下が予
想される部分が中間に存在するといった場合が間々存在
する。Generally, continuous concrete pavement is constructed by continuously constructing a length of several kilometers without expansion joints. Therefore, a part of the total length has significantly different ground conditions. There are cases. For example, it sometimes happens that a soft ground such as a swamp is filled up, so that there is a portion where a large subsidence is expected in the middle.
【０００５】このような場合、コンクリート舗装を部分
的に強化する必要があるが、従来の連続鉄筋コンクリー
ト舗装工法ではコンクリート舗装版中に連続して埋設さ
れた多量の鉄筋に対し、ひび割れの発生により非常に大
きな力が働き、その力だけで降伏点に近い状態に至る。
このため、このような状態の鉄筋に更に垂直荷重による
曲げ応力を負担させることはほとんど不可能であり、従
って鉄筋の増加による部分的補強が困難であるという問
題があった。In such a case, it is necessary to partially strengthen the concrete pavement, but in the conventional continuous reinforced concrete pavement construction method, a large amount of rebar continuously embedded in the concrete pavement plate is extremely damaged due to cracking. A large force is exerted on it, and only that force leads to a state close to the yield point.
Therefore, it is almost impossible to further apply bending stress due to vertical load to the reinforcing bar in such a state, and there is a problem that it is difficult to partially reinforce by increasing the reinforcing bar.
【０００６】一方、鉄筋の代りにＰＣ鋼材をコンクリー
ト舗装版の版厚の中央より下側に配置する工法では従来
の連続鉄筋コンクリート舗装に比べると極めて破壊耐力
が大きく、しかも版厚を薄くでき、その部分的な補強に
は、増厚して鉄筋を付加する方法が考えられるが、この
場合にも前述した従来の連続鉄筋コンクリート舗装の場
合と同じ理由によりあまり効率的でないという問題があ
る。On the other hand, in the construction method in which the PC steel material is arranged below the center of the plate thickness of the concrete paving plate instead of the reinforcing bar, the breaking strength is extremely large as compared with the conventional continuous reinforced concrete pavement, and the plate thickness can be reduced. For partial reinforcement, a method of increasing the thickness and adding reinforcing bars can be considered, but in this case also, there is a problem that it is not very efficient for the same reason as in the case of the conventional continuous reinforced concrete pavement described above.
【０００７】本発明は上述の如き従来の問題にかんが
み、特にＰＣ鋼材を舗装版厚の中央より下側に配置した
連続コンクリート舗装において、版厚を部分的に大きく
することなく、効果的に部分的補強をなし得る目地なし
の連続コンクリート舗装工法の提供を目的としてなされ
たものである。In view of the above-mentioned conventional problems, the present invention is particularly effective in a continuous concrete pavement in which a PC steel material is arranged below the center of the pavement plate thickness, without partially increasing the plate thickness. The purpose of the present invention is to provide a continuous concrete pavement method without joints that can be mechanically reinforced.
【０００８】[0008]
【課題を達成するための手段】上述の如き従来の問題を
解決し、所期の目的を達成するための本発明の特徴は、
連続したコンクリート舗装版内に長手方向に向けて連続
した補強材を埋設してなる連続コンクリート舗装工法に
おいて、前記コンクリート舗装版の構築に際し、プレス
トレスを付与するための特定区間と、その他の通常区間
とを別々に構築し、前記特定区間は、長手方向に向けて
連続した補強材を埋設してコンクリートを打設し、該特
定区間の長手方向に挿通したプレストレス付与用ＰＣケ
ーブルを該特定区間両端部で緊張定着し、然る後、該特
定区間内と前記通常区間内との連続した補強材を接続し
て前記両区間を連続させた目地なしのコンクリート舗装
版とすることにある。The features of the present invention for solving the above-mentioned conventional problems and achieving the intended purpose are as follows.
In a continuous concrete pavement method in which a continuous reinforcing material is embedded in the continuous concrete pavement in the longitudinal direction, in the construction of the concrete pavement plate, a specific section for applying prestress, and other normal sections And the separate section are constructed separately, and in the specific section, a continuous reinforcing material is embedded in the longitudinal direction and concrete is poured, and the prestressing PC cable inserted in the longitudinal direction of the specific section is provided in the specific section. It is intended that tension is fixed at both ends, and after that, continuous reinforcements in the specific section and the normal section are connected to form a jointless concrete pavement plate in which both sections are continuous.
【０００９】[0009]
【作用】本発明の連続コンクリート舗装工法によれば、
他の部分より大きい沈下が予想される部分等、補強を必
要とする特定区間と他の通常区間とを分けて施工し、そ
の特定区間において通常区間より過大なひび割れが形成
されても緊張用ＰＣケーブルを緊張することにより、特
定区間が圧縮され、ひび割れが小さくなるとともに、最
大曲げ耐力が大きくなり、増厚せずに部分的な補強がな
される。然る後、特定区間と通常区間の連続した補強材
を接続してコンクリート舗装版を連続させることにより
特定区間と通常区間が連続した連続コンクリート舗装と
なる。According to the continuous concrete paving method of the present invention,
PC for tension even if a specific section requiring reinforcement and another normal section such as a section that is expected to sink more than other sections are constructed separately, and even if an excessively large crack is formed in the specific section compared to the normal section By tensioning the cable, a specific section is compressed, cracks are reduced, maximum bending strength is increased, and partial reinforcement is performed without increasing the thickness. After that, a continuous concrete pavement in which the specific section and the normal section are continuous by connecting the continuous reinforcing material of the specific section and the normal section to make the concrete pavement plate continuous.
【００１０】[0010]
【実施例】次に本発明の実施例を図面について説明す
る。Embodiments of the present invention will now be described with reference to the drawings.
【００１１】図において、１は舗装路盤であり、ａは特
に補強を要する特定区間、ｂは補強を要しない通常区間
である。この実施例の工法では、図１，図２に示すよう
に、特定区間ａの両側に未施工区間ｃを残して他の通常
区間ｂを施工している。特定区間ａ及び通常区間ｂとも
に、ＰＣ鋼材からなる耐荷重兼用の連続した補強材２，
２……を長手方向に向けて版厚の中央から下側に配設
し、これを埋め込んでコンクリートを打設することによ
りコンクリート舗装版３，４を形成しており、図３に示
すようにコンクリートの乾燥収縮と収縮を拘束する連続
した補強材２の存在によって幅員方向のひび割れ５，５
……が略一定間隔毎に形成される。In the figure, 1 is a paved roadbed, a is a specific section that requires special reinforcement, and b is a normal section that does not require reinforcement. In the construction method of this embodiment, as shown in FIGS. 1 and 2, other normal sections b are constructed while leaving unconstructed sections c on both sides of the specific section a. A continuous reinforcing material 2 made of PC steel that also serves as a load bearing both in the specific section a and the normal section b.
2 ... are arranged from the center of the plate thickness to the lower side in the longitudinal direction, and the concrete paving plates 3 and 4 are formed by embedding this and placing concrete, as shown in FIG. Cracks 5 and 5 in the width direction due to the presence of continuous shrinkage material 2 which restrains shrinkage and shrinkage of concrete.
... are formed at substantially regular intervals.
【００１２】また特定区間ａは、コンクリート打設前に
版厚の中央高さ位置にシース６，６……を配置し、これ
を埋め込んでコンクリートを打設する。そしてコンクリ
ートの乾燥収縮や地盤条件の相違によって通常区間より
過大なひび割れ５，５……が形成された後でも、図４に
示すようにシース６，６……内に挿通した緊張用ＰＣケ
ーブル７，７……を、特定区間ａのコンクリート舗装版
３の両端面に支持させて緊張定着し、特定区間の全域に
プレストレスを付与することができる。これによって特
定区間のコンクリート舗装版３は圧縮され、ひび割れ
５，５……は通常区間ｂよりその幅が狭められ、全体の
弾性力が大きくなり、耐曲げ荷重が通常区間に比べて大
きくなる。尚緊張用ＰＣケーブル７は、シース６内に予
め通しておいてもよく、コンクリート打設後に通しても
よい。Further, in the specific section a, the sheaths 6, 6 ... Are arranged at the center height position of the plate thickness before the concrete is poured, and the sheaths are embedded to pour the concrete. Then, even after the excessively large cracks 5, 5 ... have been formed from the normal section due to the dry shrinkage of concrete and the difference in ground conditions, the tension PC cable 7 inserted in the sheaths 6, 6 ... as shown in FIG. , 7 ... are supported on both end surfaces of the concrete pavement slab 3 in the specific section a to fix the tension, and prestress can be applied to the entire specific section. As a result, the concrete paving slab 3 in the specific section is compressed, the width of the cracks 5, 5 ... Is narrower than that in the normal section b, the overall elastic force is increased, and the bending load is increased as compared with the normal section. The tension PC cable 7 may be passed through the sheath 6 in advance, or may be passed after placing concrete.
【００１３】このようにして特定区間を施工した後、図
５に示すように未施工区間ｃ内にて両区間ａ，ｂの連続
した補強材２，２……をカプラー８によって接続した
後、その未施工区間ｃにコンクリートを打設し、両区間
ａ，ｂを連続させる。この未施工区間ｃにおいてもコン
クリートの乾燥収縮によってひび割れ５，５……が形成
され、両区間ａ，ｂが連続した連続コンクリート舗装と
なる。After the specific section has been constructed in this way, as shown in FIG. 5, after connecting the continuous reinforcing members 2, 2 ... Concrete is placed in the unconstructed section c to make both sections a and b continuous. In this unconstructed section c as well, cracks 5, 5 ... Are formed due to drying shrinkage of the concrete, resulting in a continuous concrete pavement in which both sections a and b are continuous.
【００１４】このように構築されたコンクリート舗装の
供用を開始すると、図６に示すようにひび割れ５が全体
に成長するが、図６に示すようにプレストレスが付与さ
れている特定区間は、他の区間よりひび割れの成長が小
さいものとなる。When the concrete pavement constructed as described above is put into service, cracks 5 grow all over as shown in FIG. 6, but as shown in FIG. The crack growth is smaller than that of section.
【００１５】尚上述の実施例では特定区間ａと通常区間
ｂとを並行して施工する場合を示しているが、特定区間
ａを先に施工し、その後未施工区間ｃを設けることなく
通常区間ｂを連続させて施工してもよい。In the above-mentioned embodiment, the specific section a and the normal section b are constructed in parallel, but the specific section a is constructed first, and then the normal section c is not provided. b may be continuously applied.
【００１６】また本発明は、連続した補強材２として通
常の連続鉄筋、ＰＣ鋼棒、ＰＣ鋼より線又はＦＲＰ耐食
性線材を用いる工法にも適応し得るものである。The present invention can also be applied to a construction method using a normal continuous reinforcing bar, PC steel rod, PC steel stranded wire or FRP corrosion resistant wire as the continuous reinforcing material 2.
【００１７】[0017]
【発明の効果】上述したように本発明の連続コンクリー
ト舗装工法においては、特に補強が必要な特定区間を通
常区間とは別に構築し、通常区間より過大なひび割れが
発生しても緊張用ＰＣケーブルを緊張してプレストレス
を付与するようにしたことにより、特定区間は通常区間
と同様なひび割れが形成されることとなり、そのひび割
れが圧縮されて耐曲げ荷重が大きくなるとともに、供用
開始後におけるひび割れ耐力及び破壊耐力を大きくでき
るため、経済的でかつ効率の良い部分的補強がなされた
連続コンクリート舗装が施工できる。As described above, in the continuous concrete pavement construction method of the present invention, a specific section requiring special reinforcement is constructed separately from the normal section, and even if an excessively large crack is generated than the normal section, the PC cable for tensioning. By applying tension to prestresses, the same cracks are formed in the specific section as in the normal section, the cracks are compressed and the bending resistance increases, and the cracks after in-service start Since the yield strength and the fracture strength can be increased, it is possible to construct an economical and efficient partially reinforced continuous concrete pavement.
【図１】本発明工法の一実施例における特定区間のコン
クリート打設前の状態を示す平面図である。FIG. 1 is a plan view showing a state before placing concrete in a specific section in an embodiment of the method of the present invention.
【図２】同上の断面図である。FIG. 2 is a sectional view of the same.
【図３】同上のひび割れ発生後の状態を示す断面図であ
る。FIG. 3 is a cross-sectional view showing a state after occurrence of cracks in the above.
【図４】同上の特定区間のプレストレス付与状態を示す
断面図である。FIG. 4 is a cross-sectional view showing a prestressed state in a specific section of the above.
【図５】同上の特定区間及び通常区間の連続状態を示す
断面図である。FIG. 5 is a cross-sectional view showing a continuous state of the specific section and the normal section of the above.
【図６】同上の施工後のひび割れ発生状態を示す断面図
である。FIG. 6 is a cross-sectional view showing a state in which a crack has occurred after the above construction.
ａ 特定区間 ｂ 通常区間 ｃ 未施工区間 １ 舗装路盤 ２ 連続した補強材 ３，４ コンクリート舗装版 ５ ひび割れ ６ シース ７ 緊張用ＰＣケーブル ８ カプラー a Specified section b Normal section c Unconstructed section 1 Paved roadbed 2 Continuous reinforcement 3,4 Concrete pavement plate 5 Crack 6 Sheath 7 PC cable for tension 8 Coupler
Claims (1)
向に向けて連続した補強材を埋設してなる連続コンクリ
ート舗装工法において、前記コンクリート舗装版の構築
に際し、プレストレスを付与するための特定区間と、そ
の他の通常区間とを別々に構築し、前記特定区間は、長
手方向に向けて連続した補強材を埋設してコンクリート
を打設し、該特定区間の長手方向に挿通したプレストレ
ス付与用ＰＣケーブルを該特定区間両端部で緊張定着
し、該特定区間内と前記通常区間内との連続した補強材
を接続して前記両区間を連続させた目地なしのコンクリ
ート舗装版とすることを特徴としてなる連続コンクリー
ト舗装工法。1. A continuous concrete pavement method in which a continuous reinforcing material is embedded in a continuous concrete pavement in the longitudinal direction, and a specific section for applying a prestress when the concrete pavement is constructed. , The other normal sections are constructed separately, the specific section is filled with a continuous reinforcing material in the longitudinal direction, concrete is poured, and the prestressing PC is inserted in the longitudinal direction of the specific section. A cable is tension-fixed at both ends of the specific section, and a continuous reinforcing material in the specific section and in the normal section is connected to form a jointless concrete pavement plate in which the both sections are continuous. Continuous concrete paving method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30111293A JP2513581B2 (en) | 1993-11-05 | 1993-11-05 | Continuous concrete paving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30111293A JP2513581B2 (en) | 1993-11-05 | 1993-11-05 | Continuous concrete paving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07127009A true JPH07127009A (en) | 1995-05-16 |
| JP2513581B2 JP2513581B2 (en) | 1996-07-03 |
Family
ID=17892988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30111293A Expired - Fee Related JP2513581B2 (en) | 1993-11-05 | 1993-11-05 | Continuous concrete paving method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2513581B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100482923B1 (en) * | 2004-03-02 | 2005-04-22 | 주식회사 유탑엔지니어링건축사사무소 | Asphalt sinking prevention apparatus of smooth ground's road |
| KR100884780B1 (en) * | 2008-07-16 | 2009-02-23 | (주)삼우아이엠씨 | A structure of prestressed concrete pavement and its construction method |
-
1993
- 1993-11-05 JP JP30111293A patent/JP2513581B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100482923B1 (en) * | 2004-03-02 | 2005-04-22 | 주식회사 유탑엔지니어링건축사사무소 | Asphalt sinking prevention apparatus of smooth ground's road |
| KR100884780B1 (en) * | 2008-07-16 | 2009-02-23 | (주)삼우아이엠씨 | A structure of prestressed concrete pavement and its construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2513581B2 (en) | 1996-07-03 |
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