JP5215030B2 - Structure - Google Patents

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JP5215030B2
JP5215030B2 JP2008122489A JP2008122489A JP5215030B2 JP 5215030 B2 JP5215030 B2 JP 5215030B2 JP 2008122489 A JP2008122489 A JP 2008122489A JP 2008122489 A JP2008122489 A JP 2008122489A JP 5215030 B2 JP5215030 B2 JP 5215030B2
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underground
ground
retaining wall
pillar
wall
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JP2009270358A (en
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努 小室
善一 石井
克彦 征矢
慎一郎 河本
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Taisei Corp
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Description

本発明は、山留壁の内側に沿って地下階等の地下部分が構築された構造物に関するものである。   The present invention relates to a structure in which an underground part such as an underground floor is constructed along the inside of a mountain retaining wall.

通常、地下階や深い基礎構造等の地下部分を有する構造物を建てる場合には、先ず掘削した上記地下部分の外周に沿って山留壁を構築することにより、周囲の地盤の崩落を防止した後に、当該山留壁の内側に上記地下部分を建築している。   Usually, when building a structure with an underground part such as an underground floor or deep foundation structure, the surrounding ground is prevented from collapsing by first constructing a retaining wall along the outer periphery of the excavated underground part. Later, the basement was built inside the mountain wall.

ところで、従来、上記山留壁は、上記構造物を構築した後は不要となるために、撤去されるか、あるいはそのまま埋設されていた。
そこで、このような山留壁の有効利用を図るべく、例えば下記特許文献１においては、上記山留壁を、新たに建築する構造物の支持杭の一部として利用する建物の地下部の構造が提案されている。 By the way, conventionally, since the mountain retaining wall is unnecessary after the construction of the structure, it has been removed or buried as it is.
Therefore, in order to effectively use such a mountain retaining wall, for example, in Patent Document 1 below, the structure of the underground part of a building that uses the mountain retaining wall as a part of a support pile of a newly constructed structure Has been proposed.

図３は、下記特許文献１において開示されている建物の地下部の構造を示すもので、地中に埋設された複数の鋼材からなる地中壁体（土留壁）１と、この地中壁体１の地下空間２形成側に沿って複数配設され、下端３が地中壁体１の下端４より上方に位置する柱体５と、各柱体５の下端部３同士を連結する梁体６とを備え、梁体６と地中壁体１とを連結部７で連結することにより、柱体５にかかる鉛直荷重を梁体６の設置位置より下方の地中壁体１に伝達するようにしたものである。   FIG. 3 shows the structure of the underground part of a building disclosed in Patent Document 1 below, and an underground wall (residence wall) 1 made of a plurality of steel materials embedded in the ground and the underground wall. A plurality of pillars 5 disposed along the underground space 2 forming side of the body 1 and having the lower end 3 positioned above the lower end 4 of the underground wall 1 and the beams connecting the lower end portions 3 of the respective pillars 5 to each other The vertical load applied to the column 5 is transmitted to the underground wall 1 below the installation position of the beam 6 by connecting the beam 6 and the underground wall 1 with the connecting portion 7. It is what you do.

上記構成からなる建物の地下部の構造によれば、柱体５にかかる鉛直荷重を、連結部７を介して梁体６の設置位置より下方の地中壁体１に伝達することができ、かつ土圧・水圧を梁体６の設置位置より上方の地中壁体１で受けることができるために、地中壁体１を従来の土留壁として使用するとともに支持杭としても有効に使用でき、よって従来に比べ支持杭の数を減らすことができて、建設コストを低減することができるという利点が得られる。
特開２００２−６１２１２号公報 According to the structure of the underground part of the building having the above configuration, the vertical load applied to the column 5 can be transmitted to the underground wall 1 below the installation position of the beam 6 via the connecting part 7. And since earth pressure and water pressure can be received by the underground wall 1 above the installation position of the beam body 6, the underground wall 1 can be used effectively as a conventional retaining wall as well as a supporting pile. Therefore, the number of support piles can be reduced as compared with the conventional case, and the construction cost can be reduced.
JP 2002-61212 A

しかしながら、上記従来の建物の地下部の構造においては、地中壁体１の内側に構造物が構築されている。このため、特に狭小な土地に建設される構造物に適用した場合に、当該構造物が敷地境界から敷地内側に入った位置に構築されることになり、この結果、上部構造の内部空間の有効幅が土地の有効幅に対して小さくなるために、空間確保が不十分になってしまうという問題点がある。   However, in the structure of the underground part of the conventional building, a structure is built inside the underground wall 1. For this reason, especially when applied to a structure built on a narrow land, the structure will be built at the position inside the site from the site boundary. As a result, the internal space of the superstructure is effective. Since the width is smaller than the effective width of the land, there is a problem that the space is insufficiently secured.

そこで、上記山留壁の直上に地上階の柱や壁を構築することにより、当該山留壁を構造物の本設の杭として兼用させる構造も提案されている。
ところが、この場合には、上記山留壁に本設杭として要求される支持力を確保するために、その材料の選択や管理、施工精度、支持地盤への到達確認や杭の載荷試験といった上記支持力の確認のための様々な検討・試算・試験等行う必要があり、この結果コストも嵩むとともに、工期の長期化も招いてしまうという問題点がある。 Therefore, a structure has also been proposed in which a pillar or wall on the ground floor is constructed immediately above the mountain retaining wall so that the mountain retaining wall can also be used as a main pile of the structure.
However, in this case, in order to secure the supporting force required as a permanent pile on the mountain retaining wall, the material selection and management, construction accuracy, confirmation of arrival at the supporting ground and pile loading test, etc. It is necessary to perform various studies, trial calculations, tests, and the like for confirming the bearing capacity. As a result, there are problems that the cost increases and the construction period is prolonged.

本発明は、かかる事情に鑑みてなされたもので、狭小な土地に地下部分を有する構造物を建てる場合にも、建築コストの高騰化等を招くことなく、地上部分に極力大きな内部空間を確保することができる構造物を提供することを課題とするものである。   The present invention has been made in view of such circumstances, and even when a structure having an underground part is built on a narrow land, a large internal space is secured on the ground part as much as possible without causing an increase in construction costs. It is an object of the present invention to provide a structure that can be used.

上記課題を解決するために、請求項１に記載の発明は、地盤に打ち込まれた山留芯材を有する山留壁と、この山留壁の内側に構築された地下部分と、この地下部分の上部に建設された地上部分とを有する構造物において、上記地上部分の鉛直荷重支持部材が、上記山留芯材の直上に構築されるとともに、上記地下部分の柱が、せん断伝達材が突設された上記山留芯材の表面に沿ってコンクリートが打設されることにより上記山留芯材に一体的に接合され、かつ上記地下部分の上記柱の上部が上記山留壁の上端部分を包み込むことにより、上記地上部分の鉛直荷重が上記山留芯材を介して上記地下部分の上記柱から当該構造物の基礎に伝達されることを特徴とするものである。ここで、上記鉛直支持部材とは、柱や壁等の構造物の鉛直荷重を支持する部材の総称である。 In order to solve the above-mentioned problem, the invention according to claim 1 includes a mountain retaining wall having a mountain retaining core driven into the ground, an underground portion constructed inside the mountain retaining wall, and the underground portion. In the structure having an above-ground part constructed on the upper part of the base, the vertical load supporting member of the above-mentioned ground part is constructed immediately above the above-mentioned mountain retaining core material, and the pillar of the above-mentioned underground part is protruded by the shear transmission material. The concrete is cast along the surface of the installed core material, so that it is integrally joined to the installed core material, and the upper part of the pillar in the underground portion is the upper end portion of the installed wall. by encasing, it is characterized in that the vertical load of the ground segment is transmitted to the foundation of the structure from the pillars of the underground portion through the mountain cut core. Here, the said vertical support member is a general term for the member which supports the vertical load of structures, such as a pillar and a wall.

請求項１に記載の発明によれば、地上部分の鉛直荷重支持部材を山留芯材の直上に構築しているために、狭小な土地に建設する際にも、敷地境界に近接した位置まで上記地上部分を構築することができる。このため、上記地上部分の内部空間に、土地の有効幅とほぼ等しい有効幅を確保することが可能になる。 According to the first aspect of the present invention, since the vertical load supporting member of the ground part is constructed immediately above the mountain retaining core material, even when building on a narrow land, up to a position close to the site boundary. The above ground part can be constructed. For this reason, it becomes possible to ensure an effective width substantially equal to the effective width of the land in the internal space of the ground portion.

また、山留芯材に地下部分の柱を一体的に接合し、かつ上記地下部分の柱の上部が上記山留壁の上端部分を包み込んでいるために、上記地上部分の鉛直荷重を、山留芯材を介して地下部分の柱に伝達して構造物の基礎から地盤に伝えることができる。すなわち、上記山留壁を、本設の杭ではなく地上部分の鉛直荷重を地下部分に伝達する部材として利用しているために、当該山留壁に、本設杭として要求される支持力までを考慮する必要がなく、よって建設コストが嵩んだり、あるいは工期が長くなったりする等の弊害を招くことがない。 In addition, since the pillar of the underground part is integrally joined to the mountain core, and the upper part of the pillar of the underground part wraps the upper end part of the mountain wall, the vertical load of the ground part is It can be transmitted from the foundation of the structure to the ground by transmitting to the pillar in the underground part via the core material. That is, since the above-mentioned mountain retaining wall is used as a member that transmits the vertical load of the ground part to the underground part instead of the main pile, up to the supporting force required as the permanent pile on the mountain retaining wall. Therefore, there is no possibility that the construction cost increases or the construction period becomes long.

加えて、上記山留芯材と地下部分の柱とを一体的に接合し、かつ上記地下部分の柱の上部が上記山留壁の上端部分を包み込んでいる結果、地震時に、上記山留芯材の引き抜き抵抗が直接構造物の地下部分から地上部分へと伝達されるために、上記地上部分が塔状の建物の場合においても、上記構造によって転倒モーメントを充分に処理することができる。 In addition, by integrally joining the pillar of the mountain Tomeshin material and underground parts, and result top of pillars of the underground portion is wrapped with the top end portion of the mountain Tomekabe, during an earthquake, the mountain Tomeshin Since the pulling resistance of the material is directly transmitted from the underground part of the structure to the ground part, even when the ground part is a tower-like building, the structure can sufficiently handle the overturning moment.

ここで、上記地下部分の柱が、せん断伝達材が突設された上記山留芯材にコンクリートが打設されることにより構築されているために、上記せん断伝達材によって両者の付着力を高めて、山留芯材から作用する鉛直荷重を確実に地下部分の柱へと伝達させることができる。 Here, the pillars of the upper Symbol underground part, to the concrete to the mountain Tomeshin material shear transfer member is projected is constructed by being pouring, the adhesion of both by the shear transfer member The vertical load acting from the mountain core can be reliably transmitted to the underground column .

図１および図２は、本発明に係る構造物を、狭小な土地に建設された地下階を有する建物に適用した一実施形態を示すものである。
これらの図において、符号１０が山留壁である。この山留壁１０は、Ｈ形鋼等の芯材（山留芯材）を建物（構造物）１１の地下部分の外側に沿って連続的に地中に打ち込むとともに、上記芯材の間および周囲をソイルセメント等によって充填および被覆したものであり、建物１１の建設時においては、隣接地の地盤１２の崩落を防止するためのものである。 1 and 2 show an embodiment in which a structure according to the present invention is applied to a building having an underground floor constructed on a narrow land.
In these drawings, reference numeral 10 denotes a mountain retaining wall. The mountain retaining wall 10 continuously drives a core material (Yamadome core material) such as H-shaped steel into the ground along the outside of the underground portion of the building (structure) 11, and between the core materials and The periphery is filled and covered with soil cement or the like, and is used to prevent the ground 12 of the adjacent land from collapsing when the building 11 is constructed.

そして、この建物１１は、地下階（地下部分）１３と地上階（地上部分）１４とを有しており、地上階１４は、その外周に配置された柱１５または壁（鉛直荷重支持部材）が、山留壁１０の芯材の直上に位置するように構築されている。   And this building 11 has a basement floor (basement part) 13 and a ground floor (ground part) 14, and the ground floor 14 is a column 15 or a wall (vertical load support member) arranged on the outer periphery thereof. However, it is constructed so as to be located immediately above the core of the mountain retaining wall 10.

また、地下階１３の柱１６は、山留壁１０の芯材に一体化され、かつ地下階１３の柱１６の上部が山留壁１０の上端部分を包み込んでいる。ここで、芯材の表面には、多数本のスタッド（せん断伝達材）１７が突設されており、上記柱１６は、これら多数本のスタッド１７が植設された芯材の表面に沿ってコンクリートが打設されることにより構築されている。 The pillars 1-6 basement floor 13 is integrated with the core of YamaTomekabe 10, and the upper end of the column 16 of the basement 13 is wrapped the upper end portion of the mountain Tomekabe 10. Here, the surface of the core material has a large number of studs (shear transfer member) 17 is projected, the pillar 1 6, along the surface of the core material many of these books studs 17 are implanted It is constructed by casting concrete.

以上の構成からなる地下階１３を有する建物１１によれば、地上階１４の柱１５または壁を山留壁１０の芯材の直上に構築しているために、狭小な土地に建設する際にも、図中点線で示す敷地境界Ｌに近接した位置まで地上階１４を構築することができる。このため、地上階１４の内部空間に、土地の有効幅Ｂ0とほぼ等しい有効幅Ｂ1を確保することができる。 According to the building 11 having the basement 13 configured as described above, since the pillar 15 or the wall of the ground floor 14 is constructed immediately above the core material of the mountain retaining wall 10, when building on a small land. In addition, the ground floor 14 can be constructed up to a position close to the site boundary L indicated by the dotted line in the figure. For this reason, the effective width B 1 substantially equal to the effective width B 0 of the land can be secured in the internal space of the ground floor 14.

また、山留壁１０の芯材に、スタッド１７を介して地下階１３の柱１６を一体的に接合し、かつ地下階１３の柱１６の上部が山留壁１０の上端部分を包み込んでいるために、図２に白抜きの矢印で示すように、柱１５または壁から伝わる地上階１４の鉛直荷重を、山留壁１０の芯材を介して地下階１３の柱１６に伝達して、最終的に建物１１の基礎から地盤へと伝えることができる。 Further, the core material YamaTomekabe 10, integrally joining the pillar 1 6 of basement 13 via a stud 17, and the upper portion of the pillar 1 6 of the basement 13 is wrapped upper end portion of the mountain Tomekabe 10 because of de, as shown by a hollow arrow in FIG. 2, the vertical load on the ground floor 14 transmitted from the pillar 15 or wall, a pillar 1 6 of basement 13 via the core of YamaTomekabe 10 transfer And finally, it can be transmitted from the foundation of the building 11 to the ground.

この結果、山留壁１０を、本設の杭ではなく地上階１４の鉛直荷重を地下階１３に伝達する部材として利用しているために、山留壁を本設杭として用いる場合と比較して、山留壁１０に対して本設杭としての支持力を考慮する必要がなく、よって建設コストが嵩んだり、あるいは工期が長くなったりする等の弊害を招くことがない。   As a result, since the retaining wall 10 is used as a member for transmitting the vertical load of the ground floor 14 to the underground floor 13 instead of the main pile, it is compared with the case where the retaining wall is used as the permanent pile. Thus, it is not necessary to consider the supporting force as a permanent pile with respect to the mountain retaining wall 10, and thus there is no adverse effect such as an increase in construction cost or a long construction period.

また、特に地下階の柱１６が、スタッド１７が突設された芯材の表面に沿ってコンクリートが打設されることにより構築されているために、上記スタッド１７によって上記芯材と柱１６との付着力が高められ、よって上記芯材から作用する鉛直荷重を確実に地下階１３の柱１６へと伝達させることができる。 In particular, the pillar 16 in the basement is constructed by placing concrete along the surface of the core member from which the stud 17 is projected. adhesion between 6 is increased, thus it is possible to transmit to the pillars 1-6 reliably basement 13 a vertical load acting from the core material.

なお、上記実施の形態においては、山留壁１０の芯材を建物１１の地下部分の外側に沿って連続的に地中に打ち込んだ場合について説明したが、地下部分が複雑に入組んでいたり、部分的にドライエリアがあったりするような場合は、地下部分と山留め壁の形状が必ずしも一致しないため、上記芯材は、建物１１の地下部分の平面形状と相似形になるように打ち込まれない場合もある。   In the above embodiment, the case where the core material of the mountain retaining wall 10 is continuously driven into the ground along the outside of the underground portion of the building 11 has been described. However, the underground portion is complicatedly involved. When there is a partial dry area, the shape of the underground part and the retaining wall does not necessarily match, so the core material is driven so as to be similar to the planar shape of the underground part of the building 11. There may be no.

また、上記実施形態では、本発明に係る構造物を、地下階１３を有する建物１１に適用した場合についてのみ説明したが、これに限定されるものではなく、地下部分を有する各種形態の構造物、例えば地下部分に深い基礎構造を有し、当該基礎構造上に地上部分となる塔状の上部構造が構築された構造物等にも同様に適用することができる。   Moreover, although the said embodiment demonstrated only the case where the structure which concerns on this invention was applied to the building 11 which has the underground floor 13, it is not limited to this, The structure of various forms which has an underground part For example, the present invention can be similarly applied to a structure in which a deep base structure is formed in an underground part and a tower-like upper structure serving as an above-ground part is constructed on the base structure.

本発明に係る構造物の一実施形態を示す縦断面図である。It is a longitudinal section showing one embodiment of a structure concerning the present invention. 図１の鉛直荷重の伝達経路を示す要部の拡大図である。It is an enlarged view of the principal part which shows the transmission path | route of the vertical load of FIG. 従来の建物の地下部の構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the underground part of the conventional building.

符号の説明Explanation of symbols

１０ 山留壁
１１ 建物（構造物）
１３ 地下階（地下部分）
１４ 地上階（地上部分）
１５ 地上階の柱（鉛直荷重支持部材）
１６ 地下階の柱
１７ スタッド（せん断伝達材） 10 Yamato wall 11 Building (structure)
13 Basement (basement)
14 Ground floor (ground part)
15 Ground Floor Pillar (Vertical Load Support Member)
16 Basement column 17 Stud (shear transmission material)

Claims (1)

地盤に打ち込まれた山留芯材を有する山留壁と、この山留壁の内側に構築された地下部分と、この地下部分の上部に建設された地上部分とを有する構造物において、
上記地上部分の鉛直荷重支持部材が、上記山留芯材の直上に構築されるとともに、上記地下部分の柱が、せん断伝達材が突設された上記山留芯材の表面に沿ってコンクリートが打設されることにより上記山留芯材に一体的に接合され、かつ上記地下部分の上記柱の上部が上記山留壁の上端部分を包み込むことにより、上記地上部分の鉛直荷重が上記山留芯材を介して上記地下部分の上記柱から当該構造物の基礎に伝達されることを特徴とする構造物。 In a structure having a mountain retaining wall with a mountain retaining core driven into the ground, an underground part built inside the mountain retaining wall, and a ground part constructed above the underground part,
The vertical load supporting member of the ground part is constructed immediately above the pile core material, and the pillar of the underground part is made of concrete along the surface of the pile core material on which a shear transmission material is projected. As a result, the vertical load of the ground part is increased by the upper part of the pillar of the underground part wrapping the upper end part of the retaining wall. A structure that is transmitted from the pillar in the underground portion to the foundation of the structure through a core material.
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