JP4576564B2 - Protective structures and construction methods - Google Patents

Protective structures and construction methods Download PDF

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JP4576564B2
JP4576564B2 JP2006099700A JP2006099700A JP4576564B2 JP 4576564 B2 JP4576564 B2 JP 4576564B2 JP 2006099700 A JP2006099700 A JP 2006099700A JP 2006099700 A JP2006099700 A JP 2006099700A JP 4576564 B2 JP4576564 B2 JP 4576564B2
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valley
foundation
road
mountain
roof
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JP2007270566A (en
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修 若林
康昌 安田
幹士 北島
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日本サミコン株式会社
パブリックコンサルタント株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

Description

本発明は、谷側が傾斜面をなす道路や鉄道軌道などの被保護物を屋根により保護する保護構造物とその施工方法に関する。   The present invention relates to a protective structure for protecting a protected object such as a road or a railway track whose valley side forms an inclined surface with a roof, and a construction method thereof.

一般に、この種の構造物は、屋根を支持体により支持して構成されており、鋼製とPC,RCによるコンクリート製のものなどが知られている。例えば、コンクリート製のシェッドは、複数のコンクリート製の主桁を、被保護物である道路又は軌道の長手方向に向う横締用PC鋼材により一体に緊結して屋根を形成し、この屋根の道路又は軌道長手方向の両側を柱または壁に剛結して構成されている(例えば特許文献1又は2)。そして、その主桁構造は断面T型のものや断面アーチ型のものなどが知られており、また、主桁の支持構造は主桁の両側を親柱と子柱で支持するもの、または、壁体である擁壁と親柱あるいは擁壁と擁壁とで支持するもの等種々のものが知られている。   Generally, this type of structure is configured by supporting a roof with a support, and steel, concrete made of PC, RC, and the like are known. For example, a concrete shed forms a roof by integrally bonding a plurality of concrete main girders with a PC steel material for lateral fastening in the longitudinal direction of the road or track that is the object to be protected. Alternatively, both sides in the longitudinal direction of the track are rigidly connected to columns or walls (for example, Patent Document 1 or 2). And the main girder structure is known to have a T-shaped section or an arch-shaped section, and the supporting structure of the main girder is to support both sides of the main girder with a main column and a sub-column, or Various things are known, such as a retaining wall and a main pillar, which are walls, or a supporting wall supported by a retaining wall and a retaining wall.

ところで、上記のようは保護構造物を設ける既設の道路では、その谷側路肩は構造上脆弱である場合が多く、その既設道路を拡張して保護構造物を設けようとする場合、谷側の傾斜面に設ける基礎コンクリートが大型化し、且つ、その既設道路と基礎コンクリートとの空間を埋め戻すなどの作業が必要となり、施工コストの上昇を招く問題がある。
実公平1−4895号公報 特公平1−2722号公報
By the way, in the existing road where the protection structure is provided as described above, the valley side road shoulder is often structurally fragile, and when trying to extend the existing road and provide the protection structure, There is a problem in that the foundation concrete provided on the inclined surface is enlarged, and work such as refilling the space between the existing road and the foundation concrete is required, resulting in an increase in construction cost.
No. 1-4895 Japanese Patent Publication No. 1-2722

そこで、本発明は、既設道路などの被保護物を拡張し、その一部を屋根で覆う保護構造物において、谷側の拡張部分の施工性に優れた保護構造物とその施工方法を提供することを目的とする。   Therefore, the present invention provides a protective structure excellent in workability of an expanded portion on the valley side and a construction method thereof in a protective structure in which an object to be protected such as an existing road is expanded and a part thereof is covered with a roof. For the purpose.

請求項1の発明は、山に沿う既設の道路の少なくとも一部を覆う屋根の両側を、山側支持体と谷側支持体とにより支持してなる保護構造物において、前記谷側支持体の基礎は、前記谷側の傾斜面に対して道路長さ方向に立設した複数の基礎杭であり、これら基礎杭間に受梁を設け、この受梁と山側との間に床版を設け、前記既設の道路から前記床版が谷側に張り出した部分により道路の拡張部分を構成したものである。 The invention of claim 1 is a protective structure in which both sides of a roof covering at least a part of an existing road along a mountain are supported by a mountain side support and a valley side support, and the foundation of the valley side support is provided. Is a plurality of foundation piles erected in the road length direction with respect to the inclined surface on the valley side, a receiving beam is provided between these foundation piles, a floor slab is provided between the receiving beam and the mountain side , An extended portion of the road is constituted by a portion where the floor slab protrudes from the existing road to the valley side .

また、請求項2の発明は、前記床版を、前記山側支持体と前記受梁とに連結したものである。   According to a second aspect of the present invention, the floor slab is connected to the mountain side support and the receiving beam.

また、請求項3の発明は、山に沿う既設の道路の少なくとも一部を覆う屋根の両側を、山側支持体と谷側支持体とにより支持してなる保護構造物において、前記主保護構造物の谷側に、前記道路の拡張部分の山側基礎と拡張部分の谷側支持体の基礎とを設け、前記主保護構造物の谷側に設ける前記道路の拡張部分の少なくとも一部を覆う拡張部分の屋根を前記谷側支持体と前記拡張部分の谷側支持体により支持し、前記拡張部分の谷側支持体の基礎は、前記谷側の傾斜面に対して道路長さ方向に立設した複数の基礎杭であり、これら基礎杭間に受梁を設け、この受梁と前記道路の拡張部分の山側基礎との間に床版を設け、前記主保護構造物の前記屋根の谷側端部と前記拡張部分の屋根の山側端部とを連結したものである。 Further, the invention of claim 3, the sides of the roof covering at least a portion of the existing road along the mountains, the main protective structure formed by supported by the mountain side support and valley support, the main protection structure An extension that covers at least a part of the extended portion of the road provided on the valley side of the main protection structure by providing a mountain side foundation of the extended portion of the road and a foundation of the valley side support body of the extended portion on the valley side of the object The roof of the part is supported by the valley side support body and the valley side support body of the extension part, and the foundation of the valley side support body of the extension part is erected in the road length direction with respect to the inclined surface of the valley side A plurality of foundation piles, a receiving beam is provided between the foundation piles, a floor slab is provided between the receiving beam and a mountain side foundation of the extended portion of the road, and the roof valley side of the main protection structure The end portion is connected to the mountain side end portion of the roof of the extended portion .

また、請求項4の発明は、請求項3記載の保護構造物の施工方法において、前記主保護構造物の屋根の上に杭打ち装置を配置し、この屋根の上の杭打ち装置により前記基礎杭を前記山側の傾斜面に立設し、立設後、前記基礎杭上に受梁用の型枠を組み、該型枠にコンクリートを打設して受梁を形成する施工方法である。   According to a fourth aspect of the present invention, in the construction method for the protective structure according to the third aspect, a pile driving device is disposed on the roof of the main protective structure, and the foundation is formed by the pile driving device on the roof. This is a construction method in which a pile is erected on the inclined surface on the mountain side, and after the erection, a receiving beam form is assembled on the foundation pile, and concrete is placed on the form frame to form a receiving beam.

請求項1の構成によれば、谷側の傾斜面に基礎杭を立設し、この基礎杭に設けた受梁と山側との間に床版を設けることにより、床版の谷側が被保護物の拡張部分となり、その床版は谷側を基礎杭により支持されているから、構造的に優れ、拡張部分の下部を埋め戻すなどの必要がなく、施工性に優れたものとなる。   According to the configuration of claim 1, the foundation pile is erected on the inclined surface on the valley side, and the floor slab is provided between the receiving beam provided on the foundation pile and the mountain side, so that the valley side of the floor slab is protected. Since the floor slab is supported by foundation piles on the valley side, it is structurally superior and there is no need to backfill the lower part of the expanded portion, resulting in excellent workability.

また、請求項2の構成によれば、山側支持体と、基礎杭により支持された谷側の受梁とが、床版により連結されているから、保護構造物全体の安定度が増す。   Moreover, according to the structure of Claim 2, since the peak side support body and the receiving beam of the trough side supported by the foundation pile are connected by the floor slab, the stability of the whole protection structure increases.

また、請求項3の構成によれば、床版が主保護構造物の谷側に張り出す被保護物の拡張部分となり、その床版は谷側を基礎杭により支持されているから、構造的に優れ、拡張部分の下部を埋め戻すなどの必要がなく、拡張工事において施工性に優れたものとなる。   Moreover, according to the structure of Claim 3, since a floor slab becomes the expansion part of the to-be-protected object which protrudes to the trough side of a main protection structure, and the floor slab is supported by the foundation pile, it is structural. This eliminates the need to refill the lower part of the extended portion, and provides excellent workability in expansion work.

また、請求項4の構成によれば、屋根の上から基礎杭を打設するため、杭の工事期間中に主保護構造物の被保護物を使用する必要がなく、この後は、基礎杭に足場を設けるなどして、主保護構造物の谷側で作業ができるため、被保護物が道路であれば、工事期間中でも通行を確保することができる。   Moreover, according to the structure of Claim 4, in order to drive a foundation pile from the top of a roof, it is not necessary to use the to-be-protected object of a main protection structure during the construction period of a pile. Since the work can be performed on the valley side of the main protective structure by providing a scaffolding, etc., if the protected object is a road, traffic can be secured even during the construction period.

本発明における好適な実施の形態について、添付図面を参照しながら詳細に説明する。なお、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。各実施例では、従来とは異なる新規な保護構造物とその施工方法を採用することにより、従来にない保護構造物とその施工方法が得られ、その保護構造物とその施工方法について記述する。   Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting a new protection structure and its construction method different from the conventional ones, a protection structure and its construction method which are not conventional are obtained, and the protection structure and its construction method will be described.

以下、本発明の実施例を添付図面を参照して説明する。図1〜図2は本発明の実施例1を示し、同図は、保護構造物でありコンクリート製のロックシェッドを用いた道路拡張構造を示し、被保護物たる既設の道路101は、山側Yの上向きの傾斜面102と谷側Tの下向きの傾斜面103との間に挟まれている。図2は、山側支持体である壁体6を構築する施工が終了した状態を示し、施工予定のロックシェッドRの谷側支持体である柱5の下方は、前記山側の傾斜面103になっている。尚、柱5は道路長手方向に所定間隔で設けられ、プレキャストコンクリート製品が用いられている。   Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 2 show a first embodiment of the present invention, which shows a road expansion structure using a rock shed made of concrete that is a protective structure, and an existing road 101 that is a protected object is a mountain side Y Sandwiched between the upward inclined surface 102 and the downward inclined surface 103 of the valley side T. FIG. 2 shows a state in which the construction for constructing the wall body 6 which is the mountain side support body is completed, and the lower side of the pillar 5 which is the valley side support body of the rock shed R scheduled to be constructed is the mountain side inclined surface 103. ing. The columns 5 are provided at predetermined intervals in the road longitudinal direction, and precast concrete products are used.

前記ロックシェッドRは、複数のプレキャストコンクリート製主桁1を、被保護物である道路110又は軌道の長さ方向に向う横締用PC鋼材2により一体に緊結して山Yに沿う屋根3を形成し、その主桁1は、道路110又は軌道幅方向に向うPC鋼材4によりプレテンション方式で緊張力が付与されており、前記屋根3の道路110又は軌道方向の両側を、谷側支持体である前記柱5および山側支持体である前記壁体6上の受面6Aに載置し、屋根3の幅方向両側をアンカー7とアンカー7Aによりそれぞれ柱5と壁体6に結合し、屋根3と柱5の間にゴム板8を介在してヒンジ結合部とし、屋根3と壁体6との間にはゴム板8を介在してヒンジ結合部としている。そして、前記柱5の下部にはメナーゼヒンジ状の接点部9が形成されている。   The rock shed R is formed by integrally bonding a plurality of precast concrete main girders 1 with a PC steel material 2 for lateral fastening in the length direction of a road 110 or a track as a protected object, and a roof 3 along a mountain Y. The main girder 1 is provided with tension by a pre-tension method by the PC steel material 4 facing the road 110 or the track width direction, and both sides of the road 3 or the track direction of the roof 3 are supported on the valley side. Are mounted on the receiving surface 6A on the wall 5 that is the pillar 5 and the mountain-side support body, and both sides in the width direction of the roof 3 are coupled to the column 5 and the wall body 6 by the anchor 7 and the anchor 7A, respectively. A rubber plate 8 is interposed between the pillar 3 and the pillar 5 to form a hinge joint, and a rubber plate 8 is interposed between the roof 3 and the wall body 6 to form a hinge joint. A menase hinge-like contact portion 9 is formed at the lower portion of the pillar 5.

また、前記屋根3の上面がロックシェッドRの防護面3Mであり、前記屋根3の谷T側には囲いブロック13が設けられ、この囲いブロック13は現場打ちコンクリートにより形成されたり、あるいはプレキャスト製の囲いブロック13を屋根3に固定して設けられる。そして、前記防護面3M上には、緩衝層14として、囲いブロック13と山Yとの間に砂層を設けている。また、前記壁体6の下部には、谷側に張り出した横方向の山側基礎10が一体に設けられ、この山側基礎10の谷側上部には、床版11の端部を載置する係合段部10Aが形成されている。尚、前記床版11はプレキャストコンクリート製や鋼製などのものが用いられ、この例では、プレキャストコンクリート製床版を用いている。   Further, the upper surface of the roof 3 is a protective surface 3M of the rock shed R, and an enclosure block 13 is provided on the valley T side of the roof 3, and the enclosure block 13 is made of cast-in-place concrete or made of precast. The enclosure block 13 is fixed to the roof 3. A sand layer is provided as a buffer layer 14 between the enclosure block 13 and the mountain Y on the protective surface 3M. Further, a lateral mountain-side foundation 10 projecting toward the valley side is integrally provided at the lower part of the wall body 6, and the end portion of the floor slab 11 is placed on the valley-side upper part of the mountain-side foundation 10. A stepped portion 10A is formed. The floor slab 11 is made of precast concrete or steel. In this example, a precast concrete floor slab is used.

ロックシェッドRの施工において、前記谷側Tの傾斜面103には、道路長さ方向に所定間隔毎に基礎杭21を打ち込み、この基礎杭21としては鋼管杭やコンクリート杭などが用いられる。前記基礎杭21の上には、道路長さ方向の受梁22が設けられ、この受梁22は道路110の長さ方向に連続し、現場打ちコンクリートやプレキャストコンクリート製品により形成され、断面四角形で平坦な上面を有する受梁22の山側上部には、前記床版11の端部を載置する係合段部22Aが形成されている。そして、前記山側基礎10と受梁22の上に、床版11が敷設され、この床版11は、道路110の長さ方向に並設されている。また、前記柱5の下部は、前記受梁22の上面に固定されている。   In the construction of the rock shed R, foundation piles 21 are driven into the inclined surface 103 of the valley side T at predetermined intervals in the road length direction, and steel pipe piles, concrete piles, or the like are used as the foundation piles 21. On the foundation pile 21, a receiving beam 22 in the road length direction is provided. The receiving beam 22 is continuous in the length direction of the road 110, and is formed of a cast-in-place concrete or precast concrete product, and has a square cross section. An engaging step portion 22A on which the end portion of the floor slab 11 is placed is formed on the mountain side upper portion of the receiving beam 22 having a flat upper surface. A floor slab 11 is laid on the mountain side foundation 10 and the receiving beam 22, and the floor slab 11 is juxtaposed in the length direction of the road 110. The lower part of the column 5 is fixed to the upper surface of the receiving beam 22.

この例では、前記山側基礎10と受梁22とを前記床版11により連結している。図1に示すように、床版11の両端側を前記係合段部10A,22Aに載置し、アンカーなどの連結部材12により連結している。そして、前記床版11により、道路110の路面又は路盤を構成している。すなわち、床版11の上面により路面を構成してもよいし、床版11の上面に舗装を施して該床版11を路盤として使用してもよい。   In this example, the mountain side foundation 10 and the receiving beam 22 are connected by the floor slab 11. As shown in FIG. 1, both end sides of a floor slab 11 are placed on the engaging step portions 10A and 22A and connected by a connecting member 12 such as an anchor. The floor slab 11 constitutes the road surface or roadbed of the road 110. That is, the road surface may be constituted by the upper surface of the floor slab 11, or the upper surface of the floor slab 11 may be paved and used as the road bed.

上記のようなロックシェッドRにおいては、既設の道路101から床版11が谷側に張り出した部分が道路110の拡張部分110Kとなり、その床版11の谷側を基礎杭21と受梁22により支持しているから、道路長手方向に連続する大型の擁壁を傾斜面103に設ける必要がないと共に、その擁壁と傾斜面103との間に土を盛る必要もなく、上記構造では、前記床版11の拡張部分110Kの下部を埋め戻すなどの必要がなく、また、既設の道路101の路肩が軟弱で改良が必要な場合でも、その必要がなく、施工性に優れたものとなる。   In the rock shed R as described above, the portion where the floor slab 11 protrudes from the existing road 101 to the valley side becomes an extended portion 110K of the road 110, and the valley side of the floor slab 11 is formed by the foundation pile 21 and the receiving beam 22 Since it supports, it is not necessary to provide a large retaining wall that is continuous in the longitudinal direction of the road on the inclined surface 103, and it is not necessary to fill soil between the retaining wall and the inclined surface 103. There is no need to refill the lower part of the extended portion 110K of the floor slab 11, and even when the road shoulder of the existing road 101 is soft and needs to be improved, this is not necessary and the workability is excellent.

このように本実施例では、請求項1に対応して、山Yに沿う被保護物たる既設の道路110の少なくとも一部を覆う屋根3の両側を、山側支持体たる壁体6と谷側支持体たる柱5とにより支持してなる保護構造物たるロックシェッドRにおいて、柱5の基礎は、谷側の傾斜面103に対して道路長さ方向に立設した複数の基礎杭21であり、これら基礎杭21間に受梁22を設け、この受梁22と山側である山側基礎10との間に床版11を設け、既設の道路101から床版11が谷側に張り出した部分により道路101の拡張部分101Kを構成したから、床版11の谷側が道路110の拡張部分110Kとなり、その床版11は谷側を基礎杭21により支持されているから、構造的に優れ、拡張部分110Kの下部を埋め戻すなどの必要がなく、施工性に優れたものとなる。 As described above, in this embodiment, corresponding to claim 1, both sides of the roof 3 covering at least a part of the existing road 110 that is a protected object along the mountain Y are provided on the wall 6 and the valley side as the mountain side support. In the rock shed R which is a protective structure supported by the pillar 5 as the support body, the foundation of the pillar 5 is a plurality of foundation piles 21 erected in the road length direction with respect to the inclined surface 103 on the valley side. , A receiving beam 22 is provided between these foundation piles 21, a floor slab 11 is provided between the receiving beam 22 and the mountain side foundation 10 which is the mountain side, and the floor slab 11 protrudes from the existing road 101 to the valley side. Since the extended portion 101K of the road 101 is configured , the valley side of the floor slab 11 becomes the extended portion 110K of the road 110, and the floor slab 11 is supported by the foundation pile 21 on the valley side. There is no need to refill the lower part of 110K, and the workability is excellent.

また、このように本実施例では、請求項2に対応して、床版11を、山側支持体である壁体6と受梁22とに連結したから、壁体6と、基礎杭21により支持された谷側の受梁22とが、床版11により連結され、保護構造物全体の安定度を向上することができる。   In this way, in this embodiment, corresponding to claim 2, the floor slab 11 is connected to the wall body 6 which is the mountain side support body and the receiving beam 22, so that the wall body 6 and the foundation pile 21 The supported trough-side receiving beam 22 is connected by the floor slab 11, and the stability of the entire protective structure can be improved.

図3〜図9は本発明の実施例2を示し、上記各実施例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、同図は、主保護構造物たる既設のロックシェッドRの谷側を拡張する構造を示し、この保護構造物たるロックシェッドRは、上記実施例1と同様に、複数の主桁1を、被保護物である道路110又は軌道の長さ方向に向う横締用PC鋼材2により一体に緊結して山Yに沿う屋根3を形成し、その主桁1は、道路110又は軌道幅方向に向うPC鋼材4によりプレテンション方式で緊張力が付与されており、前記屋根3の道路110又は軌道方向の両側を、谷側支持体である前記柱5および山側支持体である前記壁体6上の受面6Aに載置し、屋根3の幅方向両側をアンカー7とアンカー7Aによりそれぞれ柱5と壁体6に結合し、屋根3と柱5の間にゴム板8を介在してヒンジ結合部とし、屋根3と壁体6との間にはゴム板8を介在してヒンジ結合部としている。そして、前記柱5の下部にはメナーゼヒンジ状の接点部9が形成されている。   3 to 9 show a second embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-mentioned embodiments, and detailed description thereof will be omitted. The structure which expands the valley side of the existing lock shed R is shown, and the lock shed R as the protective structure is similar to the first embodiment, and the plurality of main girders 1 are connected to the road 110 or the track which is the protected object. The roof 3 along the mountain Y is formed by tightly fastening the PC steel 2 for lateral fastening in the length direction, and the main girder 1 is tensioned in a pre-tension manner by the PC steel 4 facing the road 110 or the track width direction. Force is applied, and both the road 110 or both sides of the track direction of the roof 3 are placed on the receiving surface 6A on the pillar 5 which is a valley side support body and the wall body 6 which is a mountain side support body, and the roof 3 on both sides in the width direction are connected to the column 5 and the wall body 6 by the anchor 7 and the anchor 7A, By interposing a rubber plate 8 between the root 3 and the bar 5 and hinged connection, between the roof 3 and the wall 6 has a hinged portion by interposing a rubber plate 8. A menase hinge-like contact portion 9 is formed at the lower portion of the pillar 5.

また、前記屋根3の上面3MがロックシェッドRの防護面であり、前記防護面3M上には、緩衝層14として、砂層を設けることができる。また、前記壁体6の下部には、山側及び谷側の両方に張り出した横方向のフーチング部31が一体に設けられている。また、前記柱5の下部には谷側基礎32が設けられ、この谷側基礎32は、現場打ちコンクリートやプレキャストコンクリート製品により形成され、道路110の谷側路肩側において長さ方向に連続して設けられており、平坦な上面を有し、下部には地中に埋設したフーチング部32Aが形成されている。そして、前記柱5の下部は、前記谷側基礎32に連結固定されている。   Further, the upper surface 3M of the roof 3 is a protective surface of the rock shed R, and a sand layer can be provided as a buffer layer 14 on the protective surface 3M. In addition, a lateral footing portion 31 projecting from both the mountain side and the valley side is integrally provided at the lower portion of the wall body 6. In addition, a valley-side foundation 32 is provided at the lower part of the pillar 5, and this valley-side foundation 32 is formed of a cast-in-place concrete or a precast concrete product, and continuously in the length direction on the valley-side shoulder side of the road 110. A footing portion 32A is formed which has a flat upper surface and is buried in the lower portion. The lower part of the pillar 5 is connected and fixed to the valley side foundation 32.

図4に示すように、上記のような主保護構造物たる既設のロックシェッドRの谷側は、傾斜面103となっている。次に、このような道路101を拡張する保護構造物の施工方法について説明する。図5に示すように、ロックシェッドRの屋根3の上に、杭打ち装置51を載せ、ロックシェッドRの谷側の傾斜面103において、山側と谷側とにそれぞれ道路長さ方向に所定間隔毎に基礎杭41,21を打ち込む、これら基礎杭41,21としては鋼管杭やコンクリート杭などが用いられる。尚、基礎杭41,42を打ち終わったら、屋根3から杭打ち装置51を撤去する。尚、杭打ち装置51には自走式装置を用いる。   As shown in FIG. 4, the valley side of the existing lock shed R which is the main protective structure as described above is an inclined surface 103. Next, the construction method of the protection structure which expands such a road 101 is demonstrated. As shown in FIG. 5, the pile driving device 51 is placed on the roof 3 of the lock shed R, and on the inclined surface 103 on the valley side of the lock shed R, a predetermined interval is provided in the road length direction on the mountain side and the valley side, respectively. The foundation piles 41 and 21 are driven in each time. As these foundation piles 41 and 21, steel pipe piles, concrete piles, or the like are used. When the foundation piles 41 and 42 are finished, the pile driving device 51 is removed from the roof 3. The pile driving device 51 is a self-propelled device.

そして、基礎杭41,21を打った後、図6に示すように、山側の基礎杭41の上に、山側基礎たるコンクリート基礎42を設け、一方、谷側の基礎杭21の上部に前記受梁22を設け、これらコンクリート基礎42及び受梁22は道路110の長さ方向に連続する。尚、それらコンクリート基礎42及び受梁22は、プレキャストコンクリート製品を用いて施工することができるが、以下は、現場打ちコンクリートによる施工例について説明する。   After hitting the foundation piles 41 and 21, as shown in FIG. 6, a concrete foundation 42 as a mountain side foundation is provided on the mountain side foundation pile 41. A beam 22 is provided, and the concrete foundation 42 and the receiving beam 22 are continuous in the length direction of the road 110. Although the concrete foundation 42 and the receiving beam 22 can be constructed using precast concrete products, an example of construction using cast-in-place concrete will be described below.

前記山側のコンクリート基礎42の構築においては、傾斜面103を利用して基礎杭41の上部に型枠(図示せず)を組み、コンクリートを打設して、谷側上部に係合段部22Aを有するコンクリート基礎42を形成する。この場合、基礎42中に基礎杭41の上部を埋設して固定することができる。尚、コンクリート基礎42を設ける傾斜面103の箇所に所定の支持力があれば、基礎杭41を設ける必要はない。   In the construction of the concrete foundation 42 on the mountain side, a formwork (not shown) is assembled on the upper part of the foundation pile 41 using the inclined surface 103, concrete is placed, and the engaging step 22A is formed on the upper part of the valley side. Forming a concrete foundation 42 having In this case, the upper portion of the foundation pile 41 can be buried in the foundation 42 and fixed. In addition, if the predetermined support force exists in the location of the inclined surface 103 in which the concrete foundation 42 is provided, it is not necessary to provide the foundation pile 41.

一方、谷側の基礎杭21上に受梁22を構築するには、図6及び図7に示すように、道路長手方向に隣り合う基礎杭21,21間に、コンクリート板や鉄板などからなる平板材23を架設し、この基礎杭21により支持され道路長手方向に連続する平板材23と、コンクリート基礎42を設ける前の基礎杭41と基礎杭21との間に、足場材により足場を組み、好ましくは、図6に示したように、型枠材を兼用する前記平板材23とコンクリート基礎42との間に足場52を組んで設け、この後、道路110側から、足場52をつかって、型枠材25,25Aを平板材23上に搬入し、図8に示すように、受梁22上に型枠を組む。この型枠は、受梁22の下面を形成する前記平板材23と、受梁22の側面を形成する側面型枠材25,25Aとを備え、一方の側面型枠材25Aは前記係合段部22Aを形成するものであり、その型枠の内部にコンクリートを打設し、谷側上部に係合段部22Aを有する前記受梁22を構築する。この場合、側面型枠材25,25Aは撤去するが、平板材23はコンクリート製の受梁22と一体となる。また、受梁22と基礎杭21とは図示しない連結手段により連結される。   On the other hand, in order to construct the receiving beam 22 on the foundation pile 21 on the valley side, as shown in FIG. 6 and FIG. 7, the foundation piles 21 and 21 adjacent to each other in the longitudinal direction of the road are made of a concrete plate or an iron plate. A flat plate 23 is installed, and a scaffold is assembled between the flat plate 23 supported by the foundation pile 21 and continuing in the longitudinal direction of the road, and the foundation pile 41 and the foundation pile 21 before the concrete foundation 42 is provided. Preferably, as shown in FIG. 6, a scaffold 52 is provided between the flat plate member 23 that also serves as a formwork and the concrete foundation 42, and then the scaffold 52 is used from the road 110 side. Then, the mold materials 25 and 25A are carried onto the flat plate material 23, and the mold is assembled on the receiving beam 22 as shown in FIG. This mold is provided with the flat plate member 23 that forms the lower surface of the receiving beam 22 and side surface mold members 25 and 25A that form the side surfaces of the receiving beam 22. The portion 22A is formed, and concrete is placed inside the formwork, and the receiving beam 22 having the engaging step portion 22A at the upper part of the valley side is constructed. In this case, the side surface mold members 25 and 25A are removed, but the flat plate member 23 is integrated with the concrete receiving beam 22. Further, the receiving beam 22 and the foundation pile 21 are connected by a connecting means (not shown).

尚、平板材23を基礎杭21,21間に架設する際には、まず、基礎42又は基礎杭41と、基礎杭21との間に足場52を組み、道路長手方向に隣り合う足場52,52を用いて、平板材23を、道路101側から運搬し、基礎杭21,21間に据付ければよい。   When laying the flat plate 23 between the foundation piles 21 and 21, first, a scaffold 52 is assembled between the foundation 42 or the foundation pile 41 and the foundation pile 21, and the scaffolds 52 adjacent to each other in the longitudinal direction of the road. The flat plate 23 may be transported from the road 101 side using 52 and installed between the foundation piles 21 and 21.

このようにして受梁22を道路長手方向に連続して形成したら、図9に示すように、床版11の両端側を前記係合段部42A,22Aに係合載置し、アンカーなどの連結部材12により連結し、このようにして、山側基礎であるコンクリート基礎42と受梁22とが床版11により連結される。そして、前記柱5より谷側の部分が道路110の拡張部分110Kである。   When the receiving beam 22 is continuously formed in the longitudinal direction of the road in this way, as shown in FIG. 9, both end sides of the floor slab 11 are engaged and placed on the engaging step portions 42A and 22A, and anchors or the like The connection is made by the connecting member 12, and the concrete foundation 42 that is the mountain side foundation and the receiving beam 22 are thus connected by the floor slab 11. A portion on the valley side from the pillar 5 is an extended portion 110K of the road 110.

また、前記拡張部分110Kは、保護構造物の新設の屋根63により覆われ、この屋根63は、複数のプレキャストコンクリート製主桁61を、被保護物である道路110の拡張部分110Kの長さ方向に向う横締用PC鋼材62により一体に緊結して形成され、既設の前記屋根3に連続するように形成され、既設の屋根3の谷側端部3Tと、新設の屋根63の山側端部63Tとは図示しない連結手段により連結され、これにより新設の屋根63の山側は、該屋根63の山側支持体である前記柱5と谷側基礎32により支持される。すなわち、屋根63側が主保護構造物の増設部分となる。また、前記主桁61は、拡張部分110K幅方向に向うPC鋼材64によりプレテンション方式で緊張力が付与されており、前記屋根63の谷側を柱65上に載置し、この柱65と屋根63とをアンカー67により連結し、その柱65の下部を前記受梁22の上面に連結する。尚、柱65は道路長手方向に所定間隔で設けられている。尚、図3では、床版11の上に舗装層111を設けている。   Further, the extended portion 110K is covered with a new roof 63 of a protective structure, and the roof 63 includes a plurality of precast concrete main girders 61 in the length direction of the extended portion 110K of the road 110 which is a protected object. Is formed by tightly fastening by a PC steel material 62 for lateral fastening toward the side, and is formed so as to be continuous with the existing roof 3. The valley side end portion 3 T of the existing roof 3 and the mountain side end portion of the new roof 63 are formed. It is connected to 63T by connecting means (not shown), whereby the mountain side of the newly installed roof 63 is supported by the pillar 5 and the valley side foundation 32 which are mountain side supports of the roof 63. That is, the roof 63 side is an additional part of the main protective structure. Further, the main girder 61 is provided with tension by a pretension method by the PC steel material 64 extending in the width direction of the extended portion 110K, and the trough side of the roof 63 is placed on the column 65. The roof 63 is connected with an anchor 67, and the lower portion of the column 65 is connected to the upper surface of the receiving beam 22. The pillars 65 are provided at predetermined intervals in the road longitudinal direction. In FIG. 3, a pavement layer 111 is provided on the floor slab 11.

また、このように本実施例では、請求項3に対応して、山Yに沿う既設の道路101の少なくとも一部を覆う屋根の両側を、山側支持体たる壁体6と谷側支持体たる柱5とにより支持してなる保護構造物において、主保護構造物の谷側に、道路101の拡張部分101Kの山側基礎たるコンクリート基礎42拡張部分101Kの谷側支持体たる柱65の基礎とを設け、主保護構造物Rの谷側に設ける道路101の拡張部分101Kの少なくとも一部を覆う拡張部分101Kの屋根63を谷側支持体たる柱5と拡張部分101Kの谷側支持体たる柱65により支持し、拡張部分101Kの谷側支持体たる柱65の基礎は、谷側の傾斜面103に対して道路長さ方向に立設した複数の基礎杭で21あり、これら基礎杭21間に受梁22を設け、この受梁22と道路101の拡張部分101Kの山側基礎であるコンクリート基礎42との間に床版11を設け、主保護構造物Rの屋根3の谷側端部3Tと拡張部分101Kの屋根63の山側端部63Tとを連結したから、床版11がロックシェッドRの谷側に張り出す道路110の拡張部分110Kとなり、その床版11は谷側を基礎杭21により支持されているから、構造的に優れ、拡張部分110Kの下部を埋め戻すなどの必要がなく、拡張工事において施工性に優れたものとなる。 Further, in the present embodiment in this manner, corresponding to claim 3, on both sides of the roof 3 covering a part even without least the existing road 101 along the mountain Y, mountain side support serving wall 6 and valley In the main protection structure R supported by the pillar 5 as the support body, on the valley side of the main protection structure R , the concrete foundation 42 which is the mountain side foundation of the extension portion 101K of the road 101 and the valley side support body of the extension portion 101K. The roof 63 of the extended portion 101K that covers at least a part of the extended portion 101K of the road 101 provided on the valley side of the main protection structure R is provided with the foundation of the column 65 and the column 5 as the valley side support and the extended portion 101K. The foundation of the pillar 65 which is supported by the pillar 65 which is the valley side support body and which is the valley side support body of the extended part 101K is a plurality of foundation piles which are erected in the road length direction with respect to the inclined surface 103 on the valley side. the receiving beam 22 provided between these foundation pile 21 is a mountain side foundation dilation 101K of the receiving beam 22 and the road 101 Conch The deck 11 is provided between the over preparative basis 42, because the concatenation of the main protective structure valley end 3T of the roof 3 of R and the mountain side end portion 63T of the expanded portion 101K of the roof 63, floor slab 11 It becomes the extended part 110K of the road 110 projecting to the valley side of the rock shed R, and the floor slab 11 is supported by the foundation pile 21 on the valley side, so it is structurally excellent and the lower part of the extended part 110K is refilled. There is no need, and the construction work is excellent in expansion work.

また、このように本実施例では、請求項4に対応して、請求項3記載の保護構造物の施工方法において、主保護構造物たるロックシェッドRの屋根3の上に杭打ち装置51を配置し、この屋根3の上の杭打ち装置51により基礎杭21を山側の傾斜面103に立設し、立設後、基礎杭21上に受梁22用の型枠を組み、該型枠にコンクリートを打設して受梁22を形成するから、屋根3の上から基礎杭21を打設するため、杭の工事期間中にロックシェッドRの道路110を使用する必要がなく、この後は、基礎杭21に足場を設けるなどして、既設のロックシェッドRの谷側で作業ができるため、工事期間中でも通行を確保することができる。   Thus, in this embodiment, corresponding to claim 4, in the construction method of the protective structure according to claim 3, the pile driving device 51 is placed on the roof 3 of the lock shed R which is the main protective structure. The foundation pile 21 is erected on the inclined surface 103 on the mountain side by the pile driving device 51 on the roof 3, and after the erection, the formwork for the receiving beam 22 is assembled on the foundation pile 21, and the formwork Since the concrete beam is cast on the bridge 3 to form the receiving beam 22, it is not necessary to use the Rock Shed R road 110 during the construction of the pile. Since it is possible to work on the valley side of the existing rock shed R by providing a scaffolding on the foundation pile 21, traffic can be secured even during the construction period.

また、実施例上の効果として、平板材23とコンクリート基礎42との間に足場52を組んで設けたから、足場の悪く重機などが使い難い傾斜面103上において、基礎杭21,21の上部における受梁22の施工を簡便に行うことができ、全体として工事費を安価に抑えることができる。   Further, as an effect on the embodiment, since the scaffolding 52 is provided between the flat plate member 23 and the concrete foundation 42, on the inclined surface 103 where the heavy machinery and the like are poor and the scaffolding is difficult to use, on the upper part of the foundation piles 21 and 21 The construction of the receiving beam 22 can be easily performed, and the construction cost can be reduced as a whole.

図10は本発明の実施例3を示し、上記各実施例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例は、柱65と床版11と受梁22の連結構造が上記実施例2と相違し、同図に示すように、床版11の谷側端部には、他の部分より厚い肉厚部11Nを形成し、この端部である肉厚部11Nを前記受梁22の上に載置した状態で該受梁22に連結固定され、その肉厚部11Nの上に前記柱65の下部が連結固定されている。   FIG. 10 shows a third embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted. The connecting structure of the beams 22 is different from that of the second embodiment, and as shown in the figure, a thicker portion 11N thicker than the other portions is formed at the valley side end of the floor slab 11, and this is the end. The thick portion 11N is connected and fixed to the receiving beam 22 in a state of being placed on the receiving beam 22, and the lower portion of the column 65 is connected and fixed to the thick portion 11N.

このように本実施例においても、上記各請求項に対応して、同様な作用・効果を奏する。   Thus, also in the present embodiment, the same operation and effect are exhibited in correspondence with the above claims.

なお、本発明は、前記実施例に限定されるものではなく、種々の変形実施が可能である。例えば、保護構造物および基礎の各部材の連結構造は、各種の方法を用いることができる。   In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, various methods can be used for the connection structure of the protection structure and each member of the foundation.

本発明の実施例1を示す保護構造物の断面図である。It is sectional drawing of the protection structure which shows Example 1 of this invention. 同上、既設の道路に山側支持体を施工した状態の断面図である。It is sectional drawing of the state which constructed the mountain side support body on the existing road same as the above. 本発明の実施例2を示す被保護物(道路)を拡張した後の全体断面図である。It is whole sectional drawing after expanding the to-be-protected object (road) which shows Example 2 of this invention. 同上、主保護構造物の断面図である。It is sectional drawing of a main protection structure same as the above. 同上、主保護構造物の屋根に杭打ち装置を載せた状態を示す断面図である。It is sectional drawing which shows the state which mounted the pile driving device on the roof of the main protection structure same as the above. 同上、基礎杭などを用いて足場を組んだ状態の断面図である。It is sectional drawing of the state which built the scaffold using the foundation pile etc. same as the above. 同上、基礎杭上に平板材を架設した状態を示す側面図である。It is a side view which shows the state which laid the flat material on the foundation pile same as the above. 同上、基礎杭上に型枠を組んだ状態を示す断面図である。It is sectional drawing which shows the state which assembled the formwork on the foundation pile same as the above. 同上、受梁と山側基礎との間に床版を設けた状態を示す断面図である。It is sectional drawing which shows the state which provided the floor slab between the receiving beam and the mountain side foundation same as the above. 本発明の実施例3を示す被保護物(道路)を拡張した後の全体断面図である。It is whole sectional drawing after expanding the to-be-protected object (road) which shows Example 3 of this invention.

符号の説明Explanation of symbols

R ロックシェッド(保護構造物・主保護構造物)
3 屋根
3T 谷側端部
5 柱(谷側支持体)
6 壁体(山側支持体)
10 山側基礎
11 床版
21 基礎杭
22 受梁
23 平板材
32 谷側基礎
41 基礎杭
42 コンクリート基礎(山側基礎)
51 杭打ち装置
52 足場
63 屋根
63T 山側端部
65 柱(山側支持体)
101 既設の道路
102 傾斜面(山)
103 傾斜面(谷)
110 道路
110K 拡張部分
R lock shed (protection structure / main protection structure)
3 Roof
3T valley side edge 5 pillar (valley side support)
6 Wall (mountain side support)
10 Mountain side foundation
11 Floor slab
21 Foundation pile
22 Receiving beam
23 Flat plate
32 Valley side foundation
41 Foundation pile
42 Concrete foundation (mountain foundation)
51 Pile driver
52 Scaffold
63 Roof
63T mountain side edge
65 Pillar (mountain side support)
101 Existing road
102 Inclined surface (mountain)
103 Inclined surface (valley)
110 road
110K extension

Claims (4)

山に沿う既設の道路の少なくとも一部を覆う屋根の両側を、山側支持体と谷側支持体とにより支持してなる保護構造物において、前記谷側支持体の基礎は、前記谷側の傾斜面に対して道路長さ方向に立設した複数の基礎杭であり、これら基礎杭間に受梁を設け、この受梁と山側との間に床版を設け、前記既設の道路から前記床版が谷側に張り出した部分により道路の拡張部分を構成したことを特徴とする保護構造物。 In a protective structure formed by supporting both sides of a roof covering at least a part of an existing road along a mountain with a mountain side support and a valley side support, the foundation of the valley side support is inclined on the valley side. A plurality of foundation piles erected in the road length direction with respect to the surface, a receiving beam is provided between the foundation piles, a floor slab is provided between the receiving beam and the mountain side, and the floor is removed from the existing road. A protective structure characterized in that the expansion part of the road is constituted by the part of the plate protruding to the valley side . 前記床版を、前記山側支持体と前記受梁とに連結したことを特徴とする請求項1記載の保護構造物。 The protective structure according to claim 1, wherein the floor slab is connected to the mountain-side support body and the receiving beam. 山に沿う既設の道路の少なくとも一部を覆う屋根の両側を、山側支持体と谷側支持体とにより支持してなる保護構造物において、前記主保護構造物の谷側に、前記道路の拡張部分の山側基礎と拡張部分の谷側支持体の基礎とを設け、前記主保護構造物の谷側に設ける前記道路の拡張部分の少なくとも一部を覆う拡張部分の屋根を前記谷側支持体と前記拡張部分の谷側支持体により支持し、前記拡張部分の谷側支持体の基礎は、前記谷側の傾斜面に対して道路長さ方向に立設した複数の基礎杭であり、これら基礎杭間に受梁を設け、この受梁と前記道路の拡張部分の山側基礎との間に床版を設け、前記主保護構造物の前記屋根の谷側端部と前記拡張部分の屋根の山側端部とを連結したことを特徴とする保護構造物。 Both sides of the roof covering at least a portion of the existing road along the mountains, the main protective structure formed by supported by the mountain side support and valley support, the valley side of the main protection structure, of the road An extension portion roof and an extension portion valley side support base are provided, and the extension portion roof covering at least a part of the extension portion of the road provided on the valley side of the main protective structure is the valley side support. And the foundation of the valley side support of the extension part is a plurality of foundation piles erected in the road length direction with respect to the inclined surface of the valley side, these A receiving beam is provided between the foundation piles, a floor slab is provided between the receiving beam and the mountain side foundation of the extended portion of the road, and the trough side end of the roof of the main protection structure and the roof of the extended portion are provided. A protective structure characterized by connecting the mountain side ends . 請求項3記載の保護構造物の施工方法において、前記主保護構造物の屋根の上に杭打ち装置を配置し、この屋根の上の杭打ち装置により前記基礎杭を前記山側の傾斜面に立設し、立設後、前記基礎杭上に受梁用の型枠を組み、該型枠にコンクリートを打設して受梁を形成することを特徴とする保護構造物の施工方法。 4. The construction method for a protective structure according to claim 3, wherein a pile driving device is disposed on the roof of the main protective structure, and the foundation pile is set up on the slope on the mountain side by the pile driving device on the roof. A method for constructing a protective structure comprising: installing and standing up, forming a receiving beam form on the foundation pile, and placing concrete on the form to form a receiving beam.
JP2006099700A 2006-03-31 2006-03-31 Protective structures and construction methods Expired - Fee Related JP4576564B2 (en)

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KR101065458B1 (en) * 2009-06-09 2011-09-19 (주)서현컨스텍 Rock Shed Tunnel Structure as Retaining Wall and Contructing Method for Such Rock Shed Tunnel Structure
KR100954554B1 (en) * 2009-09-04 2010-04-23 충청북도 옥천군(상하수도사업소장) A mountain stream drain equipment for road protection
JP6322479B2 (en) * 2014-05-22 2018-05-09 神鋼建材工業株式会社 Covered structure
CN108797405B (en) * 2018-06-27 2020-06-19 重庆水利电力职业技术学院 Bridge and tunnel are continuous and are prevented falling stone's buffer structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185021A (en) * 1992-12-18 1994-07-05 Nippon Samikon Kk Foundation structure of road protection shed
JP2004244866A (en) * 2003-02-12 2004-09-02 Nihon Samicon Co Ltd Road expanding structure and road expanding construction method
JP2004346729A (en) * 2003-04-28 2004-12-09 Koken Sangyo Kk Widened road
JP2006028808A (en) * 2004-07-13 2006-02-02 Nihon Samicon Co Ltd Road enlarging structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185021A (en) * 1992-12-18 1994-07-05 Nippon Samikon Kk Foundation structure of road protection shed
JP2004244866A (en) * 2003-02-12 2004-09-02 Nihon Samicon Co Ltd Road expanding structure and road expanding construction method
JP2004346729A (en) * 2003-04-28 2004-12-09 Koken Sangyo Kk Widened road
JP2006028808A (en) * 2004-07-13 2006-02-02 Nihon Samicon Co Ltd Road enlarging structure

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