JP4272542B2 - Seismic reinforcement method for viaduct - Google Patents

Seismic reinforcement method for viaduct Download PDF

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JP4272542B2
JP4272542B2 JP2004008133A JP2004008133A JP4272542B2 JP 4272542 B2 JP4272542 B2 JP 4272542B2 JP 2004008133 A JP2004008133 A JP 2004008133A JP 2004008133 A JP2004008133 A JP 2004008133A JP 4272542 B2 JP4272542 B2 JP 4272542B2
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viaduct
ramen
viaducts
underpass
girder
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JP2005200929A (en
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忠良 石橋
毅 津吉
伸一 田附
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East Japan Railway Co
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Description

本発明は、高架橋の高架下を利用状態としたままで行う耐震補強工法に関する。   The present invention relates to a seismic strengthening method that is performed while the underpass of an elevated bridge is kept in use.

鉄道橋や道路橋として使用される既存のラーメン高架橋において、一般には高架橋柱の耐震補強が行われるが、その他に例えばブレース型ダンパーを用いた耐震補強工法も公知となっている(特許文献1参照)。
特開2003−64624号公報
In existing ramen viaducts used as railway bridges and road bridges, seismic reinforcement of viaduct columns is generally performed, but other seismic reinforcement methods using, for example, brace dampers are also known (see Patent Document 1). ).
JP 2003-64624 A

ところで、高架下を店舗や事務所等として利用している場合において、高架橋柱全部の耐震補強を行うためには、テナントの移転や休業の費用補償が必要となる。しかし、その費用補償は膨大になるため、高架橋柱全部を耐震補強できない場合がある。   By the way, in the case where the underpass is used as a store or office, in order to perform seismic reinforcement of all viaduct pillars, it is necessary to reimburse the tenant or compensate for the cost of closure. However, since the cost compensation is enormous, it may not be possible to retrofit all viaduct columns.

本発明の課題は、高架橋において、高架下を利用状態としたままでの耐震補強を可能とすることである。   An object of the present invention is to enable seismic reinforcement in a viaduct while keeping the underpass in a utilization state.

以上の課題を解決するため、請求項に記載の発明は、例えば図に示すように、高架下を店舗や事務所等の利用空間Sとしたラーメン高架橋2と、その橋軸方向の前後に位置する耐震補強可能なラーメン高架橋3において、高架下を利用空間Sとしたラーメン高架橋2を挟む前後のラーメン高架橋3を耐震補強した上で、これらのラーメン高架橋2・3を一体化することを特徴とする。 In order to solve the above- described problems, the invention described in claim 1 includes, as shown in FIG. 1 , for example, a ramen viaduct 2 in which a use space S such as a store or an office is located under an overpass, and its front and rear in the bridge axis direction. In the ramen viaduct 3 that can be seismically strengthened, the ramen viaduct 3 before and after the ramen viaduct 2 with the use space S under the overpass is seismically reinforced, and these ramen viaducts 2 and 3 are integrated. Features.

このように、高架下利用空間としたラーメン高架橋を挟んだ前後のラーメン高架橋を耐震補強して、これらのラーメン高架橋を一体化することで、高架下利用空間にあるラーメン高架橋の補強を行わないでその前後に一体の耐震補強したラーメン高架橋によって耐震性を高められる。   In this way, the ramen viaducts before and after the ramen viaduct used as an underpass use space are seismically reinforced, and these ramen viaducts are integrated so that the ramen viaduct in the underpass use space is not reinforced. Seismic resistance can be enhanced by the integrated ramen viaduct that is reinforced with earthquake resistance before and after that.

請求項に記載の発明は、例えば図に示すように、高架下を店舗や事務所等の利用空間Sとしたラーメン高架橋2と、その橋軸方向の前後に単純桁4を挟んで位置する耐震補強可能なラーメン高架橋3において、高架下を利用空間Sとしたラーメン高架橋2及び単純桁4を挟む前後のラーメン高架橋3の高架橋柱32を耐震補強した上で、これらのラーメン高架橋2・3と単純桁4とを一体化することを特徴とする。 The invention according to claim 2 is, for example, as shown in FIG. 1 , a ramen viaduct 2 in which a use space S such as a store or an office is located under an overpass, and a simple girder 4 sandwiched between front and rear of the bridge axis direction. In the ramen viaduct 3 capable of seismic reinforcement, the ramen viaduct 2 with the use space S under the elevated and the viaduct columns 32 of the ramen viaduct 3 before and after the simple girder 4 are seismically reinforced, and these ramen viaducts 2 and 3 And the simple girder 4 are integrated.

このように、高架下利用空間としたラーメン高架橋及び単純桁を挟んだ前後のラーメン高架橋を耐震補強して、これらのラーメン高架橋とその間の単純桁とを一体化することで、高架下利用空間にあるラーメン高架橋の補強を行わないでその前後に一体の耐震補強したラーメン高架橋によって耐震性を高められる。   In this way, the ramen viaduct used as the underpass elevated space and the ramen viaduct before and after the simple girder are seismically reinforced, and these ramen viaducts and the simple girder in between are integrated into the underpass elevated use space. The seismic resistance can be improved by the integrated ramen viaduct that is reinforced by seismic reinforcement before and after a certain ramen viaduct.

請求項に記載の発明は、請求項に記載の高架橋の耐震補強工法であって、例えば図に示すように、前記単純桁4とラーメン高架橋2・3において、その間に充填材5を注入して固化させることにより、構造的に一体化することを特徴とする。 The invention described in claim 3 is the viaduct seismic reinforcement method according to claim 2 , and for example, as shown in FIG. 1 , the filler 5 is interposed between the simple girder 4 and the ramen viaducts 2 and 3. It is characterized by being structurally integrated by pouring and solidifying.

請求項に記載の発明によれば、高架下利用空間としたラーメン高架橋を挟んだ前後のラーメン高架橋を耐震補強して、これらのラーメン高架橋を一体化することにより、高架下利用空間にあるラーメン高架橋の補強を行わないでその前後に一体の耐震補強したラーメン高架橋によって耐震性を高められるため、高架下を利用状態としたままで、連続するラーメン高架橋を一括して耐震補強できる。 According to the first aspect of the present invention, the ramen viaduct before and after the ramen viaduct used as an underpass use space is seismically reinforced, and these ramen viaducts are integrated so that the ramen in the underpass use space is integrated. The seismic reinforcement can be enhanced by the seismic reinforced ramen viaduct before and after the reinforcement of the viaduct, so that the continuous ramen viaduct can be seismically reinforced in a lump without leaving the underpass.

請求項に記載の発明によれば、高架下利用空間としたラーメン高架橋及び単純桁を挟んだ前後のラーメン高架橋を耐震補強して、これらのラーメン高架橋とその間の単純桁とを一体化することで、高架下利用空間にあるラーメン高架橋の補強を行わないでその前後に一体の耐震補強したラーメン高架橋によって耐震性を高められるため、高架下を利用状態としたままで、連続するラーメン高架橋を一括して耐震補強できる。 According to the invention described in claim 2 , the ramen viaduct used as an underpass elevated space and the ramen viaduct before and after the simple girder are seismically reinforced, and these ramen viaducts and the simple girder therebetween are integrated. In order to improve the earthquake resistance without the reinforcement of the ramen viaduct in the use space under the overpass, the continuous ramen viaduct is kept in the same state as it is under the overpass. Can be seismically reinforced.

以下、図を参照して本発明を実施するための最良の形態を詳細に説明する。
本発明を適用する高架橋の実施形態の構成を示した図において、Sは高架下利用空間、2・3はラーメン高架橋、21・31はフーチング、22・32は高架橋柱、23・33は桁、25・35は桁受け、4は単純桁である。
図示のように、ラーメン高架橋2は、地盤内のフーチング21上に高架橋柱22を構築し、高架橋柱22上に桁23を構築して、橋軸方向両端の高架橋柱22から突出する桁受け25を備えた鉄筋コンクリート製である。図示例では、橋軸方向に4本の高架橋柱22が備えられている。
そして、ラーメン高架橋2は、図示のように、橋軸方向の両端の高架橋柱22まで含む高架下全部が店舗や事務所等の利用空間Sとなっている。
Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
In Figure 1 showing the configuration of the implementation form of the viaduct to the present invention, S is underpass available space, the 2-3 Ramen viaduct, 21, 31 are footing, 22, 32 is elevated bridge pillars, 23 and 33 is Digits, 25 and 35 are digits, and 4 is a simple digit.
As shown in the figure, the ramen viaduct 2 is constructed of a viaduct pillar 22 on a footing 21 in the ground, a girder 23 is constructed on the viaduct pillar 22, and a girder 25 protruding from the viaduct pillars 22 at both ends in the bridge axis direction. It is made of reinforced concrete with In the illustrated example, four viaduct columns 22 are provided in the bridge axis direction.
And as for the ramen viaduct 2, as shown in the figure, the whole underpass including the viaduct pillars 22 at both ends in the bridge axis direction is a use space S of a store or an office.

このように高架下全部を利用空間Sとしたラーメン高架橋2に対しその橋軸方向の前後に間隔を開けて位置するラーメン高架橋3は、地盤内のフーチング31上に高架橋柱32を構築し、高架橋柱32上に桁33を構築して、橋軸方向両端の高架橋柱32から突出する桁受け35を備えた鉄筋コンクリート製である。図示例では、橋軸方向に2本の高架橋柱32が備えられている。
このラーメン高架橋3は、図示のように、高架下が他の利用空間として利用されていない。
In this way, the ramen viaduct 3 located at a distance from the front and rear in the direction of the bridge axis of the ramen viaduct 2 with the entire space under the elevated space S constructed as a viaduct pillar 32 on the footing 31 in the ground, The girder 33 is constructed on the column 32 and is made of reinforced concrete having girder supports 35 protruding from the viaduct columns 32 at both ends of the bridge axis direction. In the illustrated example, two viaduct columns 32 are provided in the bridge axis direction.
As shown in the figure, the ramen viaduct 3 is not used as another use space under the elevated.

このように高架下が他の利用空間として利用されていないラーメン高架橋3と、前述した高架下全部を利用空間Sとしたラーメン高架橋2との間には、単純桁4が架設されている。この単純桁4は、ラーメン高架橋2の桁受け25とラーメン高架橋3の桁受け35の上に橋軸方向両端部が載せられている。   A simple girder 4 is installed between the ramen viaduct 3 in which the underpass is not used as another use space and the ramen viaduct 2 in which the entire underpass is the use space S as described above. This simple girder 4 has both ends in the bridge axis direction placed on the girder 25 of the ramen viaduct 2 and the girder 35 of the ramen viaduct 3.

以上のように、高架下全部を利用空間Sとしたラーメン高架橋2と、その橋軸方向の前後に間隔を開けて位置し、高架下が他の利用空間として利用されていないラーメン高架橋3と、これらラーメン高架橋2・3の桁受け25・35間に架設される単純桁4とからなる高架橋において、前後の高架下利用されていないラーメン高架橋3に耐震壁36を構築して耐震補強する。即ち、耐震壁36は、図示のように、橋軸方向に2個のフーチング31間に施工する鉄筋コンクリートブロック37と、橋軸方向に2本の高架橋柱32にそれぞれ沿って施工する鉄筋コンクリートブロック38と、桁33下に沿って施工する鉄筋コンクリートブロック39とが連続して構成される。
なお、コンクリートブロック37・38・39としたが、これに限らず、高架橋の剛性を向上する補強であればどのような補強であって良い。
As described above, the ramen viaduct 2 in which the entire underpass is used space S, and the ramen viaduct 3 that is located at intervals in the front and back of the bridge axis direction and the underpass is not used as another use space, In the viaduct composed of the girders 25 and 35 of the ramen viaducts 2 and 3 and the simple girder 4, the seismic wall 36 is constructed on the ramen viaduct 3 that is not used under the front and rear viaducts and is reinforced with earthquake resistance. That is, as shown in the figure, the seismic wall 36 includes a reinforced concrete block 37 constructed between the two footings 31 in the bridge axis direction, and a reinforced concrete block 38 constructed along the two viaduct columns 32 in the bridge axis direction. The reinforced concrete block 39 constructed along the bottom of the girder 33 is continuously formed.
Although the concrete blocks 37, 38, and 39 are used, the present invention is not limited to this, and any reinforcement may be used as long as the rigidity of the viaduct is improved.

次に、ラーメン高架橋2・3の桁23・33の端面と単純桁4の端面との間に充填材5を注入する。そして、その充填材5の固化によりラーメン高架橋2・3及び単純桁4を構造的に全一体化する。充填材5としては、モルタルやコンクリート等の無機系材料を使用する。
このように、ラーメン高架橋2・3の桁23・33と単純桁4との間に充填材5を注入して固化させることによりラーメン高架橋2・3及び単純桁4を、橋軸方向及び橋軸直角方向ともに全一体化することで、真ん中のラーメン高架橋2の全高架下利用空間Sに含まれる全高架橋柱22の耐震補強を行わずに、その高架下を利用状態としたままで、耐震壁36の構築により耐震補強した前後のラーメン高架橋3及び単純桁4を含んで全一体的に耐震性を高めることができる。
こうして全高架下利用空間Sとしたラーメン高架橋2とその橋軸方向前後の耐震補強したラーメン高架橋3及び単純桁4の全一体化により地震による高架橋全体の崩壊を防止する。
Next, the filler 5 is injected between the end faces of the girders 23 and 33 of the ramen viaducts 2 and 3 and the end faces of the simple girders 4. Then, by solidifying the filler 5, the ramen viaducts 2 and 3 and the simple girder 4 are structurally integrated. As the filler 5, an inorganic material such as mortar or concrete is used.
In this way, the filler 5 is injected between the girders 23 and 33 of the ramen viaducts 2 and 3 and the simple girders 4 to solidify the ramen viaducts 2 and 3 and the simple girders 4 in the direction of the bridge axis and the bridge axis. By integrating all of them in the right-angle direction, the seismic wall remains under the elevated state without performing the seismic reinforcement of the entire viaduct column 22 included in the use space S of the middle ramen viaduct 2 in the middle. With the construction of 36, the seismic reinforcement can be improved as a whole, including the front and rear rigid frame viaducts 3 and the simple girder 4.
Thus, collapse of the entire viaduct due to an earthquake is prevented by the total integration of the ramen viaduct 2 used as the use space S under the entire overhead, the seismic reinforced ramen viaduct 3 and the simple girder 4 before and after the bridge axis direction.

なお、実施形態においては、高架下を利用空間Sとしたラーメン高架橋2と、高架下を他の利用空間としないラーメン高架橋3と、その間に介設される単純桁4とが連続する高架橋としたが、本発明はこれに限定されるものではない。例えば単純桁を用いない高架橋や、高架下を利用空間とした高架橋が連続する高架橋であっても良く、要は連続する高架橋を互いに一体化すれば良い。
また、実施形態の他、例えば耐震壁36に代えて他の耐震補強を施工するなど具体的な構成や補強工法等についても適宜に変更可能であることは勿論である。
In the present embodiment, the ramen viaduct 2 with the underpass as the use space S, the ramen viaduct 3 without the underpass as another use space, and the viaduct in which the simple girder 4 interposed therebetween is continuous. However, the present invention is not limited to this. For example, it may be a viaduct that does not use a simple girder, or a viaduct that has a continuous viaduct that uses the underpass as a use space. In short, the continuous viaduct may be integrated with each other.
In addition to this embodiment, it is needless to say that the specific configuration, reinforcement method, and the like can be changed as appropriate, for example, by installing other earthquake-proof reinforcement instead of the earthquake-resistant wall 36.

本発明を適用する高架橋の実施形態の構成を示す側面図である。It is a side view showing the structure of implementation form viaduct applying the present invention.

符号の説明Explanation of symbols

S 高架下利用空間
2・3 ラーメン高架橋
21・31 フーチング
22・32 高架橋柱
23・33 桁
25・35 桁受け
36 耐震壁
37・38・39 剛性を向上する補強
4 単純桁
5 充填材
S Use space under elevated 2.3 Ramen viaduct 21/31 Footing 22/32 Viaduct pillar 23/33 Girder 25/35 Girder support 36 Earthquake resistant wall 37/38/39 Reinforcement to improve rigidity 4 Simple girder 5 Filling material

Claims (3)

高架下を店舗や事務所等の利用空間としたラーメン高架橋と、その橋軸方向の前後に位置する耐震補強可能なラーメン高架橋において、高架下を利用空間としたラーメン高架橋を挟む前後のラーメン高架橋を耐震補強した上で、これらのラーメン高架橋を一体化することを特徴とする高架橋の耐震補強工法。   In the ramen viaduct where the underpass is used as a space for use in stores and offices, and the ramen viaduct that can be seismically reinforced located in the front and rear of the bridge axis direction, the ramen viaduct before and after the ramen viaduct with the underpass as the use space is sandwiched A seismic reinforcement method for viaducts that integrates these ramen viaducts after seismic reinforcement. 高架下を店舗や事務所等の利用空間としたラーメン高架橋と、その橋軸方向の前後に単純桁を挟んで位置する耐震補強可能なラーメン高架橋において、高架下を利用空間としたラーメン橋及び単純桁を挟む前後のラーメン高架橋を耐震補強した上で、これらのラーメン高架橋と単純桁とを一体化することを特徴とする高架橋の耐震補強工法。   In the ramen viaduct where the underpass is used as a store or office space, and in the ramen viaduct that is seismically reinforced with a simple girder in front and rear of the bridge axis direction, the ramen bridge and simple Seismic strengthening method for viaducts, characterized in that the ramen viaducts before and after the girders are seismically reinforced, and these ramen viaducts and simple girders are integrated. 前記単純桁とラーメン高架橋において、その間に充填材を注入して固化させることにより、構造的に一体化することを特徴とする請求項に記載の高架橋の耐震補強工法。 3. The viaduct seismic reinforcement method according to claim 2 , wherein the simple girder and the ramen viaduct are structurally integrated by injecting and solidifying a filler therebetween.
JP2004008133A 2004-01-15 2004-01-15 Seismic reinforcement method for viaduct Expired - Fee Related JP4272542B2 (en)

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