JP4567794B2 - Stone bridge railing reinforcement structure - Google Patents

Stone bridge railing reinforcement structure Download PDF

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JP4567794B2
JP4567794B2 JP2009030685A JP2009030685A JP4567794B2 JP 4567794 B2 JP4567794 B2 JP 4567794B2 JP 2009030685 A JP2009030685 A JP 2009030685A JP 2009030685 A JP2009030685 A JP 2009030685A JP 4567794 B2 JP4567794 B2 JP 4567794B2
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JP2010185233A (en
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正隆 吉本
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有限会社吉本本家石材店
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Description

本発明は、石橋の上部に基礎石を設置するとともに、基礎石の上部に柱を間隔をあけて設置し、柱の上端部間に笠を設置した石橋の欄干を補強するための石橋の欄干補強構造に関するものである。   The present invention installs foundation stones at the top of the stone bridge, installs pillars at the top of the foundation stones, and installs a fence between the upper ends of the pillars to reinforce the balustrade of the stone bridge. The present invention relates to a reinforcing structure.

古くから河川に架けられる橋として、特許文献１に開示されているように、石を積み上げて形成した石橋が建造されている。この石橋には、落下防止のために左右縁部に欄干が設けられている。   As disclosed in Patent Document 1, a stone bridge formed by stacking stones has been built as a bridge over a river since ancient times. This stone bridge is provided with balustrades on the left and right edges to prevent falling.

通常、石橋に設けられた欄干は、石橋の上部に基礎石を載置するとともに、基礎石の上部に石製の柱を間隔をあけて載置し、柱の上端部間に石製の笠を載置した構造となっている。   Normally, a balustrade provided on a stone bridge places a foundation stone on the top of the stone bridge and places stone pillars on top of the foundation stone with a gap, and a stone cap between the upper ends of the pillars. It has a structure where is placed.

特開平７−６２６０９号公報JP-A-7-62609

ところが、上記従来の石橋の欄干にあっては、石橋の上部に基礎石を設置するとともに、基礎石の上部に柱を間隔をあけて載置し、柱の上端部間に笠を載置した構造であったために、長期間の使用の間に振動や劣化などの影響で欄干が崩壊してしまうおそれがあった。   However, in the balustrade of the conventional stone bridge, the foundation stone was installed on the upper part of the stone bridge, the pillars were placed on the upper part of the foundation stone with a space, and the shade was placed between the upper ends of the pillars. Due to the structure, there was a risk that the railing would collapse due to vibration or deterioration during long-term use.

そこで、本発明者は、崩壊のおそれのある既存の石橋の欄干を外観を損ねることなく補強するための構造について鋭意研究を重ね、本発明の完成に至った。   Therefore, the inventor conducted intensive studies on a structure for reinforcing a railing of an existing stone bridge that may collapse without damaging the appearance, and completed the present invention.

すなわち、請求項１に係る本発明では、石橋の上部に基礎石を設置するとともに、基礎石の上部に柱を間隔をあけて設置し、柱の上端部間に笠を設置した石橋の欄干を補強するための石橋の欄干補強構造において、基礎石及び柱の内部に補強体を貫通状に設け、補強体の下端部を石橋の内部で固定するとともに、補強体の上端部を笠の内部で固定し、前記石橋を構成する円弧状に積み上げた複数の拱環石の上面側に支持体を張設するとともに、支持体に前記補強体の下端部を固定することにした。
That is, in the present invention according to claim 1, the foundation stone is installed on the upper part of the stone bridge, the pillars are installed on the upper part of the foundation stone with an interval, and the railings of the stone bridge in which the shade is installed between the upper ends of the pillars. In the balustrade reinforcement structure of a stone bridge for reinforcement, a reinforcement body is provided in a penetrating manner inside the foundation stone and pillar, the lower end of the reinforcement body is fixed inside the stone bridge, and the upper end portion of the reinforcement body is inside the shade. The support body is stretched on the upper surface side of the plurality of meteorites that are fixed and arcuately constituting the stone bridge, and the lower end portion of the reinforcement body is fixed to the support body .

また、請求項２に係る本発明では、前記請求項１に係る本発明において、前記基礎石と笠とにホゾを形成し、ホゾに柱の上下端部を嵌入することにした。   Further, in the present invention according to claim 2, in the present invention according to claim 1, a tenon is formed on the foundation stone and the shade and the upper and lower ends of the pillar are inserted into the tenon.

そして、本発明では、以下に記載する効果を奏する。   And in this invention, there exists an effect described below.

すなわち、本発明では、石橋の上部に基礎石を設置するとともに、基礎石の上部に柱を間隔をあけて設置し、柱の上端部間に笠を設置した石橋の欄干を補強するための石橋の欄干補強構造において、基礎石及び柱の内部に補強体を貫通状に設け、補強体の下端部を石橋の内部で固定するとともに、補強体の上端部を笠の内部で固定することにしているために、既存の石橋の欄干を外観を損ねることなく補強することができ、欄干の崩壊を防止することができる。   That is, in the present invention, a stone bridge for reinforcing a balustrade of a stone bridge in which a foundation stone is installed at the upper part of the stone bridge, a pillar is installed at an upper part of the foundation stone, and a shade is installed between the upper ends of the pillars. In the balustrade reinforcement structure, the reinforcement body is provided in a penetrating manner inside the foundation stone and the pillar, and the lower end portion of the reinforcement body is fixed inside the stone bridge, and the upper end portion of the reinforcement body is fixed inside the shade. Therefore, the balustrade of the existing stone bridge can be reinforced without impairing the appearance, and the railing can be prevented from collapsing.

特に、基礎石と笠とにホゾを形成し、ホゾに柱の上下端部を嵌入することにした場合には、欄干の強度を増大させることができる。   In particular, when a tenon is formed on the foundation stone and the shade and the upper and lower ends of the pillar are inserted into the tenon, the strength of the balustrade can be increased.

また、石橋を構成する円弧状に積み上げた複数の拱環石の上面側に支持体を張設するとともに、支持体に補強体の下端部を固定することにした場合には、拱環石に下側から突き上げる力が作用しても張設された支持体で拱環石が上方に向けてずれるのを防止することができ、石橋の崩壊をも防止することができる。   In addition, when a support body is stretched on the upper surface side of a plurality of meteorites that are stacked in an arc shape that constitutes a stone bridge, and the lower end portion of the reinforcing body is fixed to the support body, Even if the force pushing up from the lower side acts, the support member stretched can prevent the meteorite from shifting upward, and the stone bridge can be prevented from collapsing.

本発明に係る石橋及び欄干を示す側面図。The side view which shows the stone bridge and balustrade which concern on this invention. 同側面一部切欠断面図。FIG. 同部分拡大側面断面図。FIG. 同部分拡大正面断面図。The partial expanded front sectional view. 同部分拡大正面断面図（敷石に設けた支持体で固定する場合）。The partial expanded front sectional view (when fixing with the support body provided in the paving stone). 同部分拡大正面断面図（アンカーで固定する場合）。The same partial expanded front sectional view (when fixing with an anchor).

以下に、本発明に係る石橋の欄干補強構造の具体的な構成について図面を参照しながら説明する。   Below, the concrete structure of the balustrade reinforcement structure of the stone bridge which concerns on this invention is demonstrated, referring drawings.

本発明は、図１に示すように、石橋１の左右縁上部に設けられた欄干２を補強する構造に関するものである。   As shown in FIG. 1, the present invention relates to a structure that reinforces a balustrade 2 provided on the upper left and right edges of a stone bridge 1.

石橋１は、従来より、地盤３に一対の土台4,5を形成し、土台4,5の間に複数の拱環石６を円弧状に積み上げてアーチ７を形成し、アーチ７の左右縁上部に壁石８を積み上げるとともに、左右の壁石８の間に中詰め土砂を詰め込み、上端部に敷石９を平坦状に載置している。   The stone bridge 1 has conventionally formed a pair of foundations 4 and 5 on the ground 3, and a plurality of meteorites 6 are stacked in an arc shape between the foundations 4 and 5 to form an arch 7. The wall stone 8 is piled on the upper portion, the middle earth and sand are packed between the left and right wall stones 8, and the paving stone 9 is placed flat on the upper end portion.

欄干２は、石橋１の敷石９の左右縁上部に基礎石10を敷設するとともに、基礎石10の上部に前後に間隔をあけて複数の角柱状の石製の柱11を載設し、柱11の上端部間に石製の笠12を架設している。   The balustrade 2 has a foundation stone 10 laid on the upper left and right edges of the paving stone 9 of the stone bridge 1, and a plurality of prismatic stone pillars 11 placed on the upper part of the foundation stone 10 at intervals in the front and rear. A stone cap 12 is erected between the upper ends of 11.

そして、本発明では、図２〜図４に示すように、基礎石10及び柱11の内部に補強体13を貫通状に設け、補強体13の下端部を石橋１の内部で固定するとともに、補強体13の上端部を笠12の内部で固定している。   And in this invention, as shown in FIGS. 2-4, while providing the reinforcement body 13 in the inside of the foundation stone 10 and the pillar 11, and fixing the lower end part of the reinforcement body 13 inside the stone bridge 1, The upper end of the reinforcing body 13 is fixed inside the shade 12.

補強体13は、棒状の本体部14の下端部に末広がり状の固定部15を形成するとともに、固定部15に貫通孔16を形成する一方、本体部14の上端部に水平円板状に張出した留部17を着脱自在に形成している。なお、留部17は、本体部14に螺着したナットを用いることもできる。   The reinforcing body 13 forms a divergent fixing portion 15 at the lower end portion of the rod-like main body portion 14 and also forms a through hole 16 in the fixing portion 15 while projecting in a horizontal disk shape at the upper end portion of the main body portion 14. The retaining portion 17 is detachably formed. The retaining portion 17 may be a nut screwed to the main body portion 14.

この補強体13は、固定部15を石橋１の内部で固定している。   The reinforcing body 13 fixes the fixing portion 15 inside the stone bridge 1.

この固定方法としては様々な方法が考えられるが、図２〜図４に示す固定方法では、石橋１のアーチ７を構成する複数の拱環石６の上面側に連続する一条の溝18を形成し、溝18に円弧棒状の支持体19を収容し、支持体19を拱環石６（アーチ７）の上面側を下方に向けて付勢した状態で張設し、支持体19の端部を土台4,5の内部のアーチ７の端部において支持板20,20で固定し、その支持体19を補強体13の固定部15に形成した貫通孔16に挿通させることで、補強体13の固定部15を石橋１の内部で固定している。   Various fixing methods are conceivable. In the fixing method shown in FIGS. 2 to 4, a continuous groove 18 is formed on the upper surface side of the plurality of meteorites 6 constituting the arch 7 of the stone bridge 1. Then, an arc bar-shaped support 19 is accommodated in the groove 18, and the support 19 is stretched in a state where the upper surface side of the meteorite 6 (arch 7) is biased downward. Is fixed to the ends of the arches 7 inside the bases 4 and 5 by the support plates 20 and 20, and the support 19 is inserted into the through-hole 16 formed in the fixing part 15 of the reinforcement 13 to thereby reinforce the reinforcement 13 The fixing part 15 is fixed inside the stone bridge 1.

また、図５に示す固定方法では、石橋１の敷石９の上面側に一条の溝21を形成し、溝21に直線棒状の支持体22を収容し、支持体22を敷石９の端部で固定し、その支持体22を補強体13の固定部15に形成した貫通孔16に挿通させることで、補強体13の固定部15を石橋１の内部で固定している。   Further, in the fixing method shown in FIG. 5, a single groove 21 is formed on the upper surface side of the paving stone 9 of the stone bridge 1, a straight bar-shaped support body 22 is accommodated in the groove 21, and the support body 22 is held at the end of the paving stone 9. The fixing portion 15 of the reinforcing body 13 is fixed inside the stone bridge 1 by fixing and inserting the support body 22 through a through hole 16 formed in the fixing portion 15 of the reinforcing body 13.

また、図６に示す固定方法では、補強体13の下端部にJ字型のアンカー形状の固定部23を形成し、この固定部23を敷石９の内部に直接固定することで、補強体13の固定部23を石橋１の内部で固定している。   Further, in the fixing method shown in FIG. 6, a J-shaped anchor-shaped fixing portion 23 is formed at the lower end portion of the reinforcing body 13, and the fixing portion 23 is directly fixed to the inside of the paving stone 9. Is fixed inside the stone bridge 1.

さらに、補強体13は、図２〜図４に示すように、敷石９と基礎石10と柱11にそれぞれ形成した貫通状の挿通孔24,25,26に本体部14を挿通するとともに、隣接する笠12の端部同士に嵌合状に形成した断面下向き凸型の段付き穴27に留部17を埋設しており、補強体13の周囲の空間をボンドやセメントなどの接着剤（図示省略）で充填している。   Further, as shown in FIGS. 2 to 4, the reinforcing body 13 is inserted adjacent to the main body 14 through the through-holes 24, 25, 26 formed in the paving stone 9, the foundation stone 10, and the pillar 11, respectively. A retaining portion 17 is embedded in a stepped hole 27 having a downwardly projecting cross section formed in a fitting manner between the ends of the cap 12 to be bonded, and the space around the reinforcing body 13 is bonded with an adhesive (such as bond or cement) (Omitted).

ここで、基礎石10の上端部と隣接する笠12の端部下側には、凹状のホゾ28,29がそれぞれ形成されており、柱11は、上下端部をホゾ28,29に嵌入させている。   Here, concave hojos 28 and 29 are respectively formed on the lower side of the end of the shade 12 adjacent to the upper end of the foundation stone 10, and the pillar 11 is inserted into the hozos 28 and 29 at the upper and lower ends. Yes.

そして、石橋１の欄干２を補強する際には、補強体13の下端部を石橋１の内部で固定した後に、基礎石10の挿通孔25に補強体13の本体部14を挿通させて基礎石10を石橋１の敷石９の上部に設置し、その後、柱11の挿通孔26に補強体13の本体部14を挿通させるとともに柱11の下端部を基礎石10の上端部に形成したホゾ28に嵌入させて柱11を基礎石10の上部に設置し、その後、補強体13の上端部に留部17を取付け、柱11の挿通孔26から接着剤を注入するとともに、柱11の上端部に笠12のホゾ29を嵌入させながら柱11の上端部に隣接する一対の笠12を段付き穴27の内部まで塗布した接着剤で固定する。   And when reinforcing the balustrade 2 of the stone bridge 1, after fixing the lower end of the reinforcing body 13 inside the stone bridge 1, the main body portion 14 of the reinforcing body 13 is inserted through the insertion hole 25 of the foundation stone 10 and the foundation. The stone 10 is installed on the top of the paving stone 9 of the stone bridge 1, and then the main body 14 of the reinforcing body 13 is inserted into the insertion hole 26 of the column 11 and the lower end of the column 11 is formed at the upper end of the foundation stone 10. The column 11 is installed on the upper part of the foundation stone 10 by being inserted into 28, and then a retaining portion 17 is attached to the upper end portion of the reinforcing body 13, an adhesive is injected from the insertion hole 26 of the column 11, and the upper end of the column 11 is also installed. The pair of shades 12 adjacent to the upper end of the column 11 is fixed with an adhesive applied to the inside of the stepped holes 27 while inserting the ridges 29 of the shades 12 into the portions.

以上に説明したように、本発明では、基礎石10及び柱11の内部に補強体13を貫通状に設け、補強体13の下端部を石橋１の内部で固定するとともに、補強体13の上端部を笠12の内部で固定することにしている。   As described above, in the present invention, the reinforcing body 13 is provided in a penetrating manner inside the foundation stone 10 and the pillar 11, the lower end portion of the reinforcing body 13 is fixed inside the stone bridge 1, and the upper end of the reinforcing body 13 is fixed. The part is fixed inside the shade 12.

そのため、本発明では、既存の石橋１の欄干２を外観を損ねることなく補強することができ、欄干２の崩壊を防止することができる。   Therefore, in this invention, the balustrade 2 of the existing stone bridge 1 can be reinforced without impairing an external appearance, and collapse of the balustrade 2 can be prevented.

また、本発明では、基礎石10と笠12とにホゾ28,29を形成し、ホゾ28,29に柱11の上下端部を嵌入することにしているために、欄干２の強度を増大させることができる。   Further, in the present invention, the base stone 10 and the shade 12 are formed with the tenons 28 and 29, and the upper and lower ends of the pillar 11 are inserted into the tenons 28 and 29, so that the strength of the balustrade 2 is increased. be able to.

また、本発明では、石橋１を構成する円弧状に積み上げた複数の拱環石６の上面側に支持体19を張設するとともに、支持体19に補強体13の下端部を固定することにしているために、拱環石６に下側から突き上げる力が作用しても張設された支持体19で拱環石６が上方に向けてずれるのを防止することができ、石橋１の崩壊をも防止することができる。   Further, in the present invention, the support body 19 is stretched on the upper surface side of the plurality of meteorites 6 stacked in an arc shape constituting the stone bridge 1, and the lower end portion of the reinforcing body 13 is fixed to the support body 19. Therefore, even if a force thrusting from below is applied to the meteorite 6, it can be prevented that the meteorite 6 is displaced upward by the support 19 that is stretched, and the collapse of the stone bridge 1. Can also be prevented.

１ 石橋 ２ 欄干
３ 地盤 4,5 土台
６ 拱環石 ７ アーチ
８ 壁石 ９ 敷石
10 基礎石 11 柱
12 笠 13 補強体
14 本体部 15 固定部
16 貫通孔 17 留部
18 溝 19 支持体
20 支持板 21 溝
22 支持体 23 固定部
24,25,26 挿通孔 27 段付き穴
28,29 ホゾ 1 Ishibashi 2 Railings 3 Ground 4,5 Foundation 6 Hazama stone 7 Arch 8 Wall stone 9 Paving stone
10 foundation stones 11 pillars
12 Shade 13 Reinforcing body
14 Body 15 Fixed part
16 Through hole 17 Retainer
18 groove 19 support
20 Support plate 21 Groove
22 Support 23 Fixed part
24,25,26 Insertion hole 27 Stepped hole
28,29

Claims (2)

石橋の上部に基礎石を設置するとともに、基礎石の上部に柱を間隔をあけて設置し、柱の上端部間に笠を設置した石橋の欄干を補強するための石橋の欄干補強構造において、
基礎石及び柱の内部に補強体を貫通状に設け、補強体の下端部を石橋の内部で固定するとともに、補強体の上端部を笠の内部で固定し、前記石橋を構成する円弧状に積み上げた複数の拱環石の上面側に支持体を張設するとともに、支持体に前記補強体の下端部を固定したことを特徴とする石橋の欄干補強構造。 In the stone bridge balustrade reinforcement structure to reinforce the balustrade of the stone bridge in which the foundation stone is installed at the upper part of the stone bridge, the pillars are installed at the upper part of the foundation stone, and the shade is installed between the upper ends of the columns,
A reinforcing body is provided in a penetrating manner inside the foundation stone and the pillar, and the lower end of the reinforcing body is fixed inside the stone bridge, and the upper end of the reinforcing body is fixed inside the shade to form an arc that forms the stone bridge. A balustrade reinforcement structure for a stone bridge, characterized in that a support body is stretched on the upper surface side of a plurality of stacked meteorites, and a lower end portion of the reinforcement body is fixed to the support body . 前記基礎石と笠とにホゾを形成し、ホゾに柱の上下端部を嵌入したことを特徴とする請求項１に記載の石橋の欄干補強構造。
The balustrade reinforcement structure of the stone bridge according to claim 1, wherein a tenon is formed on the foundation stone and the shade, and upper and lower ends of columns are inserted into the tenon.
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CN103924532B (en) * 2014-04-18 2015-08-05 岩土科技股份有限公司 Prestressing force incremental launching method repairs the method for double curvature arched bridge
GB201407868D0 (en) * 2014-05-02 2014-06-18 Soletanche Freyssinet Sas Method of enlarging the space beneath a masonry arch bridge, and a masonry arch bridge
CN104213502B (en) * 2014-09-02 2016-03-30 浙江绿艺园林工程有限公司 Gardens Arch Bridge Ribs face stone syndeton and construction method thereof
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CN111119026B (en) * 2019-12-31 2022-01-25 重庆交通大学 Assembled steel-concrete combined structure for reinforcing long-span box type arch bridge
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JPS5612407A (en) * 1979-07-11 1981-02-06 Kitarou Mochizuki Fabrication of concrete railing
JPH0383553U (en) * 1989-09-08 1991-08-26
JPH06146215A (en) * 1992-11-04 1994-05-27 Fukuyoshi Sangyo Kk Assembled bridge like arch bridge

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Publication number Priority date Publication date Assignee Title
JPS5612407A (en) * 1979-07-11 1981-02-06 Kitarou Mochizuki Fabrication of concrete railing
JPH0383553U (en) * 1989-09-08 1991-08-26
JPH06146215A (en) * 1992-11-04 1994-05-27 Fukuyoshi Sangyo Kk Assembled bridge like arch bridge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102493327A (en) * 2011-12-31 2012-06-13 东莞理工学院 Reinforced portable integral prefabricated masonry arch bridge
CN102493327B (en) * 2011-12-31 2014-03-19 东莞理工学院 Reinforced portable integral prefabricated masonry arch bridge
CN103397604A (en) * 2013-07-19 2013-11-20 重庆交通大学 Stone arch bridge structure compositely strengthened by aid of grooved arch ribs
CN103397604B (en) * 2013-07-19 2016-06-08 重庆交通大学 Construct with the stone arch bridge of flute profile arch rib composite strengthening

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