JP2011174278A - Earth retaining and earth retaining construction method - Google Patents

Earth retaining and earth retaining construction method Download PDF

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JP2011174278A
JP2011174278A JP2010038704A JP2010038704A JP2011174278A JP 2011174278 A JP2011174278 A JP 2011174278A JP 2010038704 A JP2010038704 A JP 2010038704A JP 2010038704 A JP2010038704 A JP 2010038704A JP 2011174278 A JP2011174278 A JP 2011174278A
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pile
mountain
site
retaining wall
piles
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JP5263897B2 (en
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Keigo Hori
圭吾 堀
Eiji Shirasawa
栄二 白澤
Zenichi Ishii
善一 石井
Daisuke Ogata
大輔 尾方
Hideo Nukushina
秀夫 温品
Satoru Tsuchiya
悟 土屋
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Taisei Corp
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Taisei Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide earth retaining which can securely obtain a reaction force of a strut without negotiation with an owner of an adjacent land even for the inclined ground. <P>SOLUTION: The earth retaining 1 is used for constructing a building on a site 10. The earth retaining 1 includes a first earth retaining wall 21 constructed at the mountain side of the site 10, a receiving part 40 provided on a floor surface 11 and fixed to pile heads of a plurality of piles 30A for a building, and a strut 52 bridged between the receiving part 40 and the first earth retaining wall 21. A frictional force between the receiving part 40 and the floor surface 11 and the shearing force of each pile 30A resist against a horizontal force working on the receiving part 40. Then, the horizontal load borne by each pile 30A can be reduced while dispensing with an anchor, so that the reaction force of the strut 52 can be securely obtained without negotiation with an owner of an adjacent land. Furthermore, the horizontal forces working on the pile heads of the piles 30A can be reduced to prevent the piles from being broken. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、山留および山留構築方法に関する。詳しくは、傾斜地に構造物を構築するための山留および山留構築方法に関する。   The present invention relates to a yamadome and a yamadome construction method. More specifically, the present invention relates to a mountain tower for building a structure on an inclined land and a mountain building construction method.

従来より、地下に躯体を構築するため、山留が設けられる場合がある。この山留は、地下躯体の位置を囲んで枠状に構築される山留壁と、この山留壁のうち互いに対向する部分同士の間に架け渡される支保工と、を備える。山留壁には背面の土砂が側圧として作用するため、この支保工を介して、互いに対向する山留壁で反力をとっている。   Conventionally, in order to construct a skeleton in the basement, there is a case where a mountain stop is provided. This mountain stop includes a mountain retaining wall constructed in a frame shape surrounding the position of the underground frame, and a supporting work spanned between the opposing portions of the mountain retaining wall. Since the earth and sand on the back acts as a lateral pressure on the retaining wall, reaction forces are taken by the retaining walls facing each other through this support.

ところで、敷地が傾斜地であり、敷地の山側にのみ山留壁を設ける場合がある。この場合、谷側には山留壁が存在しないため、山留壁の反力をとることができない場合がある。   By the way, there are cases where the site is sloped and a mountain retaining wall is provided only on the mountain side of the site. In this case, since there is no mountain retaining wall on the valley side, the reaction force of the mountain retaining wall may not be taken.

そこで、アースアンカー工法やアイランド工法が知られている。
アースアンカー工法は、山留壁の背面の地盤に向かってアースアンカーを打ち込んで、この地盤から反力をとる工法である。一方、アイランド工法は、敷地の中央部に躯体の一部を先行して構築し、この構築した躯体と山留壁との間に支保工を架設する工法である。 Therefore, the earth anchor method and the island method are known.
The earth anchor construction method is a construction method in which an earth anchor is driven toward the ground on the back side of the mountain retaining wall and a reaction force is taken from the ground. On the other hand, the island construction method is a construction method in which a part of the building is constructed in the center of the site in advance, and a support work is constructed between the constructed building and the mountain retaining wall.

しかしながら、アースアンカー工法では、敷地の隣接地の所有者にアンカーを打ち込むための許可が必要となるため、実施できない場合があった。
また、アイランド工法では、躯体の一部を先行して構築するため、支保工を架設するまでに時間がかかってしまい、工期が長くなる、という問題があった。 However, the earth anchor method may not be able to be carried out because it requires permission to drive the anchor to the owner of the adjacent land on the site.
In addition, the island method has a problem that since a part of the frame is constructed in advance, it takes time to construct the support work and the construction period becomes long.

以上の問題を解決するため、根切底に設けられた１本の支持杭と、この支持杭の杭頭に設けられた受け基礎と、この受け基礎から山留壁の背面に向かって打ち込まれたアースアンカーと、受け基礎と山留壁との間に架設された切梁と、を備える山留構造が提案されている（特許文献１参照）。   In order to solve the above problems, one support pile provided at the root of the root, a receiving foundation provided at the pile head of the supporting pile, and a drive from the receiving foundation toward the back of the mountain retaining wall. There has been proposed a mountain retaining structure including a ground anchor and a cutting beam constructed between a receiving foundation and a mountain retaining wall (see Patent Document 1).

特開平７−２５２８３５号公報JP-A-7-252835

しかしながら、特許文献１に示された山留構造では、実際には、アンカーの定着長を敷地内に収めることは困難であるため、依然として、隣接地の所有者と交渉して許可を得る必要があった。
また、受け基礎を１本の杭に支持させるため、この杭の負担する水平荷重が大きくなり、切梁の反力をとるのが困難となる場合があった。 However, in the mountain retaining structure shown in Patent Document 1, it is actually difficult to keep the anchor anchor length within the site, so it is still necessary to negotiate with the owner of the adjacent land to obtain permission. there were.
In addition, since the receiving foundation is supported by one pile, the horizontal load borne by the pile is increased, and it may be difficult to take the reaction force of the cut beam.

本発明は、傾斜地であっても、隣接地の所有者と交渉することなく、切梁の反力を確実にとることができる山留および山留構築方法を提供することを目的とする。   An object of the present invention is to provide a mountain retaining and a method for constructing a mountain retaining that can reliably take a reaction force of a beam without negotiating with an owner of an adjacent land even on an inclined land.

請求項１に記載の山留は、構造物を構築するための山留であって、敷地の山側に構築された山留壁と、床付面に設けられて前記構造物の複数の杭の杭頭に固着された受け部と、当該受け部と前記山留壁との間に架設された切梁と、を備えることを特徴とする。   The mountain stay according to claim 1 is a mountain stay for constructing a structure, comprising a mountain retaining wall constructed on a mountain side of a site, and a plurality of piles of the structure provided on a floor surface. It is provided with the receiving part fixed to the pile head, and the cut beam constructed between the said receiving part and the said mountain retaining wall, It is characterized by the above-mentioned.

山留壁は、例えば、親杭横矢板工法、シートパイル工法、ＳＭＷ工法により構築される。
この発明によれば、山留を、山留壁、床付面に設けられて複数の杭の杭頭に固着された受け部、および、この受け部と山留壁との間に架設された切梁を含んで構成した。よって、受け部に作用する水平力に対して、受け部と床付面との摩擦力および各杭のせん断力で抵抗する。したがって、各杭の負担する水平荷重を小さくできるから、アンカーが不要となり、隣接地の所有者と交渉することなく、切梁の反力を確実にとることができる。また、各杭の杭頭に作用する水平力が小さくなるので、杭が損傷するのを防止できる。 The mountain retaining wall is constructed by, for example, a parent pile sheet pile method, a sheet pile method, or an SMW method.
According to the present invention, the mountain tower is constructed between the mountain retaining wall, the floor-attached surface, the receiving part fixed to the pile heads of the plurality of piles, and the receiving part and the mountain retaining wall. Consists of cut beams. Therefore, it resists with the frictional force of a receiving part and a floor surface and the shear force of each pile with respect to the horizontal force which acts on a receiving part. Therefore, since the horizontal load which each pile bears can be made small, an anchor becomes unnecessary and the reaction force of a cut beam can be taken reliably, without negotiating with the owner of an adjacent land. Moreover, since the horizontal force which acts on the pile head of each pile becomes small, it can prevent that a pile is damaged.

請求項２に記載の山留は、前記傾斜地には、既存構造物が構築されており、前記受け部は、前記構造物の杭の杭頭に加えて、前記既存構造物の杭の杭頭にも固着されることを特徴とする。   According to a second aspect of the present invention, an existing structure is constructed on the sloped land, and the receiving portion includes a pile head of a pile of the existing structure in addition to a pile head of the pile of the structure. It is also characterized by being firmly attached to.

この発明によれば、受け部を、新築構造物の杭の杭頭に加えて、既存構造物の杭の杭頭にも固着した。このように既存構造物の杭にも水平力を負担させることにより、新築構造物の杭の負担する水平力をさらに低減できるので、山留壁を支持するために新築構造物の杭を大径化する必要がなく、施工コストを低減できる。   According to this invention, in addition to the pile head of the pile of a new structure, the receiving part was also fixed to the pile head of the pile of the existing structure. In this way, the horizontal force applied to the piles of the new structure can be further reduced by applying the horizontal force to the piles of the existing structure, so the piles of the new structure have a large diameter to support the mountain retaining wall. The construction cost can be reduced.

請求項３に記載の山留は、前記受け部は、前記杭頭に固着された無筋コンクリートからなる基部と、当該基部に一体に設けられてかつ前記切梁に連結された鉄筋コンクリートからなる受け梁と、を備えることを特徴とする。   The pile according to claim 3, wherein the receiving portion includes a base portion made of unreinforced concrete fixed to the pile head, and a receiving portion made of reinforced concrete provided integrally with the base portion and connected to the beam. And a beam.

この発明によれば、受け部に、杭頭に固着された無筋コンクリートからなる基部と、この基部に一体に設けられてかつ切梁に連結された鉄筋コンクリートからなる受け梁と、を設けた。よって、従来のような受け基礎と異なり、受け部の大部分を無筋コンクリートの捨てコンクリートで形成できるので、施工が容易であり、切梁により山留壁を支持するまでの期間を大幅に短縮できる。   According to the present invention, the receiving portion is provided with a base portion made of unreinforced concrete fixed to the pile head and a receiving beam made of reinforced concrete that is provided integrally with the base portion and connected to the cut beam. Therefore, unlike conventional receiving foundations, most of the receiving part can be made of unreinforced concrete, and it is easy to construct and greatly shortens the time required to support the retaining wall with a cut beam. it can.

請求項４に記載の山留構築方法は、構造物を構築するための山留を構築する山留構築方法であって、敷地の山側に山留壁を構築する工程と、前記構造物の杭を複数構築する工程と、前記敷地の一部を床付面まで掘削して、前記複数の杭の杭頭を露出させる工程と、前記山留壁から前記露出した杭頭に向かって切梁を配置し、前記床付面上に当該露出した杭頭および切梁に固着する受け部を構築する工程と、を備えることを特徴とする。   The method for constructing a mountain retaining according to claim 4 is a method for constructing a mountain retaining for constructing a structure, the step of constructing a mountain retaining wall on the mountain side of the site, and a pile of the structure A plurality of steps, excavating a part of the site to a floored surface, exposing the pile heads of the plurality of piles, and cutting beams from the retaining wall toward the exposed pile heads And a step of constructing a receiving portion to be fixed to the exposed pile head and the cut beam on the floored surface.

本発明によれば、山留を、山留壁、床付面に設けられて複数の杭の杭頭に固着された受け部、および、この受け部と山留壁との間に架設された切梁を含んで構成した。受け部に作用する水平力に対して、受け部と床付面との摩擦力および各杭のせん断力で抵抗する。よって、各杭の負担する水平荷重を小さくできるから、アンカーが不要となり、隣接地の所有者と交渉することなく、切梁の反力を確実にとることができる。また、各杭の杭頭に作用する水平力が小さくなるので、杭が損傷するのを防止できる。   According to the present invention, the mountain tower is constructed between the mountain retaining wall, the flooring surface, the receiving part fixed to the pile heads of the plurality of piles, and the receiving part and the mountain retaining wall. Consists of cut beams. The horizontal force acting on the receiving part is resisted by the frictional force between the receiving part and the floor surface and the shearing force of each pile. Therefore, since the horizontal load which each pile bears can be made small, an anchor becomes unnecessary and the reaction force of a cut beam can be taken reliably, without negotiating with the owner of an adjacent land. Moreover, since the horizontal force which acts on the pile head of each pile becomes small, it can prevent that a pile is damaged.

本発明の一実施形態に係る山留が適用された敷地を示す断面図である。It is sectional drawing which shows the site where the mountain stop concerning one Embodiment of this invention was applied. 前記実施形態に係る敷地の一部の平面図である。It is a partial top view of the site concerning the embodiment. 前記実施形態に係る山留の受け部の部分断面図である。It is a fragmentary sectional view of the receiving part of the mountain stop concerning the embodiment. 前記実施形態に係る山留の切梁の下端部の断面図および平面図である。It is sectional drawing and a top view of the lower end part of the cut beam of the mountain stop concerning the embodiment.

図１は、本発明の一実施形態に係る山留１が適用された敷地１０の断面図である。図２は、敷地１０の一部の平面図である。
敷地１０は、傾斜地であり、この敷地１０には、新築の構造物としての建物の杭３０が複数構築されている。この杭３０のうち建物の中央寄りに位置するものを杭３０Ａとする。この杭３０は、支持層まで到達している。また、図１中破線で示す部分は、建物の基礎である。
敷地１０には、建物を構築するための山留１が設けられている。この山留１は、敷地１０の周縁に沿って構築された山留壁２０と、床付面１１に設けられて複数の杭３０Ａの杭頭に固着された受け部４０と、この受け部４０と山留壁２０の上部との間に架設された支保工５０と、を備える。 FIG. 1 is a cross-sectional view of a site 10 to which a mountain stay 1 according to an embodiment of the present invention is applied. FIG. 2 is a plan view of a part of the site 10.
The site 10 is an inclined land, and a plurality of building piles 30 as newly constructed structures are constructed on the site 10. The pile 30A is located near the center of the building. The pile 30 reaches the support layer. Moreover, the part shown with the broken line in FIG. 1 is the foundation of a building.
The site 10 is provided with a Yamato 1 for constructing a building. The mountain stay 1 includes a mountain retaining wall 20 constructed along the periphery of the site 10, a receiving portion 40 provided on the floored surface 11 and fixed to the pile heads of a plurality of piles 30A, and the receiving portion 40. And a support work 50 installed between the upper part of the mountain retaining wall 20.

山留壁２０は、親杭横矢板工法により構築されている。山留壁２０は、敷地１０の山側に構築された第１山留壁２１と、敷地１０の谷側に構築された第２山留壁２２と、を備える。敷地１０は傾斜地であるため、第２山留壁２２は、第１山留壁２１よりも低くなっている。そのため、第１山留壁２１の反力を第２山留壁２２からとることが困難になっている。   The mountain retaining wall 20 is constructed by the parent pile side sheet pile method. The mountain retaining wall 20 includes a first mountain retaining wall 21 constructed on the mountain side of the site 10 and a second mountain retaining wall 22 constructed on the valley side of the site 10. Since the site 10 is inclined, the second mountain retaining wall 22 is lower than the first mountain retaining wall 21. Therefore, it is difficult to take the reaction force of the first mountain retaining wall 21 from the second mountain retaining wall 22.

支保工５０は、第１山留壁２１の上部に設けられて略水平に延びる腹起し５１と、この腹起し５１から受け部４０の受け梁４２に向かって下方に延びる切梁５２と、を備える。
切梁５２の上端部は、腹起し５１にピン接合されている。 The support 50 is provided on the upper portion of the first mountain retaining wall 21 and extends substantially horizontally, and a cut beam 52 extends downward from the erection 51 toward the receiving beam 42 of the receiving portion 40. .
The upper end portion of the cut beam 52 is pin-joined to the flank 51.

図３は、受け部４０の部分断面図である。
受け部４０は、杭３０と一体に固着された厚さ５０ｃｍ程度の平板状の無筋コンクリートからなる基部４１と、この基部４１の第１山留壁２１側の端部に一体に設けられた鉄筋コンクリートからなる受け梁４２と、を備える。基部４１は、具体的には、捨てコンクリートである。切梁５２の受け梁４２側の下端部は、受け梁４２に埋め込まれている。 FIG. 3 is a partial cross-sectional view of the receiving portion 40.
The receiving portion 40 is provided integrally with a base portion 41 made of flat unreinforced concrete having a thickness of about 50 cm fixed integrally with the pile 30 and an end portion of the base portion 41 on the first mountain retaining wall 21 side. Receiving beam 42 made of reinforced concrete. Specifically, the base 41 is abandoned concrete. A lower end portion of the cut beam 52 on the receiving beam 42 side is embedded in the receiving beam 42.

図４は、切梁５２の下端部の断面図および平面図である。
切梁５２は、Ｈ鋼である本体５２１と、この本体の下端に接合された端部プレート５２２と、本体５２１のウエブと端部プレート５２２とに接合されたリブプレート５２３と、本体５２１のフランジと端部プレート５２２とに接合された接合プレート５２４と、を備える。 FIG. 4 is a cross-sectional view and a plan view of the lower end portion of the cut beam 52.
The beam 52 includes a main body 521 made of H steel, an end plate 522 joined to the lower end of the main body, a rib plate 523 joined to the web of the main body 521 and the end plate 522, and a flange of the main body 521. And a joining plate 524 joined to the end plate 522.

この切梁５２の角度は、図１に示すように、水平面に対して約３０°であり、従来のアイランド工法や受け基礎を用いた工法に用いられる切梁の角度よりも小さくなっている。   As shown in FIG. 1, the angle of the cut beam 52 is about 30 ° with respect to the horizontal plane, and is smaller than the angle of the cut beam used in the conventional island method or the method using the receiving foundation.

このように切梁５２の水平面に対する角度が小さいため、切梁５２は、受け部４０に作用する鉛直力や曲げモーメントを低減して、受け部４０に対して主に水平力を伝達する。その結果、受け部４０の断面積を低減して厚みを抑え、基部４１を無筋で平板なコンクリート体とすることが可能となっている。   As described above, since the angle of the cut beam 52 with respect to the horizontal plane is small, the cut beam 52 reduces the vertical force and bending moment acting on the receiving portion 40 and mainly transmits the horizontal force to the receiving portion 40. As a result, it is possible to reduce the cross-sectional area of the receiving portion 40 to suppress the thickness, and to make the base portion 41 a plain and flat concrete body.

この山留１では、第１山留壁２１に作用する側圧は、切梁５２を介して、受け部４０の受け梁４２に伝達される。この受け梁４２に伝達された水平力は、基部４１を介して、杭３０に伝達される。このとき、水平力に対して、受け梁４２と床付面１１との摩擦力、および、各杭３０のせん断力により抵抗する。   In this hill 1, the lateral pressure acting on the first hill wall 21 is transmitted to the receiving beam 42 of the receiving portion 40 via the cutting beam 52. The horizontal force transmitted to the receiving beam 42 is transmitted to the pile 30 via the base 41. At this time, the horizontal force is resisted by the frictional force between the receiving beam 42 and the floor surface 11 and the shearing force of each pile 30.

また、以上の山留１は、以下の手順で構築される。
まず、敷地１０の山側に第１山留壁２１を構築し、建物の杭３０を構築する。次に、敷地１０の一部を床付面１１まで掘削して、少なくとも杭３０Ａの杭頭を露出させる。次に、第１山留壁２１の上部に腹起し５１を設け、この腹起し５１から露出した杭３０Ａの杭頭に向かって切梁５２を配置し、床付面１１上に露出した杭頭および切梁５２に固着する受け部４０を構築する。このようにして、受け部４０と第１山留壁２１との間に切梁５２を架設する。 Further, the above-mentioned Yamadome 1 is constructed by the following procedure.
First, the first mountain retaining wall 21 is constructed on the mountain side of the site 10 and the building pile 30 is constructed. Next, a part of the site 10 is excavated to the floored surface 11 to expose at least the pile head of the pile 30A. Next, an erection 51 is provided on the upper portion of the first mountain retaining wall 21, and a cut beam 52 is disposed toward the pile head of the pile 30 </ b> A exposed from the erection 51 and exposed on the floored surface 11. The receiving part 40 fixed to the pile head and the cut beam 52 is constructed. In this way, the cut beam 52 is installed between the receiving portion 40 and the first mountain retaining wall 21.

本実施形態によれば、以下のような効果がある。
（１）山留１を、第１山留壁２１、床付面１１に設けられて複数の杭３０Ａの杭頭に固着された受け部４０、および、この受け部４０と第１山留壁２１との間に架設された切梁５２を含んで構成した。よって、受け部４０に作用する水平力に対して、受け部４０と床付面１１との摩擦力および各杭３０Ａのせん断力で抵抗する。したがって、各杭３０Ａの負担する水平荷重を小さくできるから、アンカーが不要となり、隣接地の所有者と交渉することなく、切梁５２の反力を確実にとることができる。また、各杭３０Ａの杭頭に作用する水平力が小さくなるので、杭３０Ａが損傷するのを防止できる。 According to this embodiment, there are the following effects.
(1) The first retaining wall 21 is provided on the first retaining wall 21, the floored surface 11, and fixed to the pile heads of the plurality of piles 30A, and the receiving part 40 and the first retaining wall. 21 includes a cutting beam 52 erected between the two. Therefore, it resists with respect to the horizontal force which acts on the receiving part 40 with the frictional force of the receiving part 40 and the floor surface 11 and the shear force of each pile 30A. Therefore, since the horizontal load which each pile 30A bears can be made small, an anchor becomes unnecessary and the reaction force of the cut beam 52 can be taken reliably, without negotiating with the owner of an adjacent land. Moreover, since the horizontal force which acts on the pile head of each pile 30A becomes small, it can prevent the pile 30A being damaged.

（２）受け部４０に、杭３０Ａの杭頭に固着された無筋コンクリートからなる基部４１と、この基部４１に一体に設けられてかつ切梁５２に固着された鉄筋コンクリートからなる受け梁４２と、を設けた。よって、従来のような受け基礎と異なり、受け部４０の大部分を無筋コンクリートの捨てコンクリートで形成できるので、施工が容易であり、切梁５２により第１山留壁２１を支持するまでの期間を大幅に短縮できる。   (2) A base 41 made of unreinforced concrete fixed to the pile head of the pile 30 </ b> A on the receiving portion 40, and a receiving beam 42 made of reinforced concrete provided integrally with the base 41 and fixed to the cut beam 52. , Provided. Therefore, unlike the conventional receiving foundation, most of the receiving portion 40 can be formed from unreinforced concrete discarded concrete, so that the construction is easy and the first retaining wall 21 is supported by the cut beam 52. The period can be greatly shortened.

なお、本発明は前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。   It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.

例えば、本実施形態では、受け部４０を新築の建物の杭３０Ａの杭頭に固着したが、これに限らない。すなわち、建物の杭の杭頭に加えて、既存建物の残存した杭の杭頭にも固着してもよい。このようにすれば、以下のような効果がある。
（３）受け部を、新築の建物の杭の杭頭に加えて、既存の建物の杭の杭頭にも固着した。このように既存建物の杭にも水平力を負担させることにより、新築建物の杭の負担する水平力をさらに低減できるので、山側の第１山留壁を支持するために新築建物の杭を大径化する必要がなく、施工コストを低減できる。 For example, in this embodiment, although the receiving part 40 was fixed to the pile head of the pile 30A of a new building, it is not restricted to this. That is, in addition to the pile head of the building pile, the pile head of the remaining pile in the existing building may be fixed. In this way, the following effects are obtained.
(3) In addition to the pile heads of the piles of the new building, the receiving part was also fixed to the pile heads of the existing building piles. In this way, the horizontal force applied to the piles of the new building can be further reduced by applying the horizontal force to the piles of the existing building. Therefore, the piles of the new building can be increased to support the first mountain retaining wall on the mountain side. There is no need for diameter reduction, and construction costs can be reduced.

また、本実施形態では、互いに対向する山留壁の高さが異なる傾斜地に本発明を適用したが、これに限らず、互いに対向する山留壁同士の距離がかなり離れている敷地にも適用できる。   Further, in the present embodiment, the present invention is applied to an inclined land where the heights of the mountain walls facing each other are different. it can.

１…山留
１０…敷地
１１…床付面
２０…山留壁
２１…第１山留壁
２２…第２山留壁
３０、３０Ａ…杭
４０…受け部
４１…基部
４２…受け梁
５０…支保工
５１…腹起し
５２…切梁 DESCRIPTION OF SYMBOLS 1 ... Yamato 10 ... Site 11 ... Floor surface 20 ... Yamato wall 21 ... 1st mountain retaining wall 22 ... 2nd mountain retaining wall 30, 30A ... Pile 40 ... Receiving part 41 ... Base 42 ... Receiving beam 50 ... Support Work 51 ... Raised 52 ... Cut beam

Claims (4)

構造物を構築するための山留であって、
敷地の山側に構築された山留壁と、
床付面に設けられて前記構造物の複数の杭の杭頭に固着された受け部と、
当該受け部と前記山留壁との間に架設された切梁と、を備えることを特徴とする山留。 Yamatome to build a structure,
A mountain wall built on the mountain side of the site,
A receiving portion provided on a floor surface and fixed to a pile head of a plurality of piles of the structure;
A dome, comprising a cut beam constructed between the receiving portion and the hill wall. 前記敷地には、既存構造物が構築されており、
前記受け部は、前記構造物の杭の杭頭に加えて、前記既存構造物の杭の杭頭にも固着されることを特徴とする請求項１に記載の山留。 An existing structure is constructed on the site,
The pile according to claim 1, wherein the receiving portion is fixed to a pile head of the pile of the existing structure in addition to a pile head of the pile of the structure. 前記受け部は、前記杭頭に固着された無筋コンクリートからなる基部と、当該基部に一体に設けられてかつ前記切梁に連結された鉄筋コンクリートからなる受け梁と、を備えることを特徴とする請求項１または２に記載の山留。   The receiving portion includes a base portion made of unreinforced concrete fixed to the pile head and a receiving beam made of reinforced concrete provided integrally with the base portion and connected to the cut beam. The mountain tail according to claim 1 or 2. 構造物を構築するための山留を構築する山留構築方法であって、
敷地の山側に山留壁を構築する工程と、
前記構造物の杭を複数構築する工程と、
前記敷地の一部を床付面まで掘削して、前記複数の杭の杭頭を露出させる工程と、
前記山留壁から前記露出した杭頭に向かって切梁を配置し、前記床付面上に当該露出した杭頭および切梁に固着する受け部を構築する工程と、を備えることを特徴とする山留構築方法。 A mountain construction method for constructing a mountain for constructing a structure,
The process of building a mountain wall on the mountain side of the site;
Building a plurality of piles of the structure;
Excavating a part of the site to a floored surface, exposing the pile heads of the plurality of piles;
Arranging a cutting beam from the mountain retaining wall toward the exposed pile head and constructing a receiving portion that is fixed to the exposed pile head and the cutting beam on the floored surface. Yamadome construction method to do.
JP2010038704A 2010-02-24 2010-02-24 Yamatome and Yamatome construction method Expired - Fee Related JP5263897B2 (en)

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