JP3213117U - Yamato wall structure - Google Patents

Yamato wall structure Download PDF

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JP3213117U
JP3213117U JP2017003652U JP2017003652U JP3213117U JP 3213117 U JP3213117 U JP 3213117U JP 2017003652 U JP2017003652 U JP 2017003652U JP 2017003652 U JP2017003652 U JP 2017003652U JP 3213117 U JP3213117 U JP 3213117U
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main beam
retaining wall
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frame structure
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範夫 藤田
範夫 藤田
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Hirose and Co Ltd
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Abstract

【課題】豊富なバリエーションを有する山留壁の架構構造を提供する。【解決手段】主梁１１と副梁１２とを組み合せた複合腹起１０と、複合腹起の一部に連結した複数の切梁４０と、切梁と複合腹起の間に架設した一対の火打ち３０ａ、３０ｂとを使用した山留壁の架設構造であって、切梁４０の端部を副梁１２の端部近くに連結し、主梁と副梁の継手部１３を跨いで配設した少なくとも一方の火打ち３０ａの一端を主梁１１に連結した。【選択図】図３A frame structure for a mountain retaining wall having abundant variations is provided. A composite bulge 10 in which a main beam 11 and a sub-beam 12 are combined, a plurality of cut beams 40 connected to a part of the composite bulge, and a pair of bridges installed between the cut beam and the composite bulge. This is a construction structure of mountain retaining wall using fire 30a, 30b, and the end of the cut beam 40 is connected near the end of the secondary beam 12 and is disposed across the joint 13 of the main beam and the secondary beam. One end of at least one firing 30 a was connected to the main beam 11. [Selection] Figure 3

Description

本考案は、山留壁の架構構造に関する。   The present invention relates to a frame structure of a mountain wall.

出願人は、切梁を設けない山留壁の架構構造として、以下の特許文献１に記載の考案を提案した。
特許文献１に記載の考案は、腹起を、主梁と副梁との複合腹起で構成し、火打ちの端部を主梁の端部近くに連結し、主梁と副梁の継手部を、前記火打ちの連結部よりも外方（副梁側）に位置させた構造を呈することで、腹起の耐力向上、軽量化および資材コストの削減の両立を実現したものである。 The applicant has proposed the device described in the following Patent Document 1 as a frame structure of a mountain retaining wall without a beam.
In the device described in Patent Document 1, the bulge is composed of a composite bulge of the main beam and the secondary beam, the end of the fire is connected near the end of the main beam, and the joint of the main beam and the secondary beam Is provided on the outer side (on the side of the sub-beam) than the connecting portion of the fire-fitting, thereby realizing both improvement in the strength of the abdomen, reduction in weight, and reduction in material costs.

特開２０１４−１５９７１１号公報JP 2014-159711 A

ここで、特許文献１に記載の考案には、以下の点で更なる改良の余地が残されている。
（１）複合腹起の変形例。
特許文献１に記載の考案では、主梁の素材強度が、副梁の素材強度よりも高強度であることを想定していたが、素材以外の要因によって、主梁と副梁に強度差を設ける構造の提供の余地が残されている。
（２）架構構造の変形例。
特許文献１に記載の考案では、切梁を用いない山留壁での使用を想定していたが、切梁を設ける山留壁にも、前記複合腹起を応用する余地が残されている。 Here, the device described in Patent Document 1 leaves room for further improvement in the following points.
(1) Modified example of composite abdomen.
In the device described in Patent Document 1, it is assumed that the material strength of the main beam is higher than the material strength of the sub beam. However, due to factors other than the material, the strength difference between the main beam and the sub beam is increased. There remains room for provision of the structure to be provided.
(2) Modification of frame structure.
In the device described in Patent Document 1, the use of a retaining wall that does not use a cutting beam was assumed, but there is still room for applying the composite erection on the retaining wall where the cutting beam is provided. .

上記課題を解決すべくなされた本願考案は、山留壁の内面に横架した腹起と、腹起に連結した複数の切梁と、切梁と腹起の間に架設した一対の火打ちとを具備し、前記腹起が断面寸法の異なる複数の形鋼を組み合せた複合腹起で構成し、前記複合腹起が単体の主梁と、該主梁に接合して配置した副梁とからなる山留壁の架構構造であって、前記切梁の端部を副梁の端部近くに連結し、主梁と副梁の連結部を跨いで配設した少なくとも一方の火打ちの一端を主梁に連結した。
本考案の他の形態において、前記複合腹起が隣り合う主梁の間に副梁を介装していて、一方の火打ちの一端を主梁に連結し、他方の火打ちの一端を副梁に連結してもよい。
本考案の他の形態において、前記主梁と副梁の高さが等しい寸法関係にある。
本考案の他の形態において、前記副梁が積層した内方梁と外方梁とからなり、該内方梁および外方梁の断面が同一寸法である。
本考案の他の形態において、前記主梁が高強度鋼であり、前記副梁が一般構造用圧延鋼材の組み合せとしてもよい。
本考案の他の形態において、前記主梁と副梁としてＨ形鋼を使用することができる。 The present invention, which has been made to solve the above-mentioned problems, includes a belly erected horizontally on the inner surface of the mountain retaining wall, a plurality of beams connected to the abdomen, and a pair of fires erected between the beam and the erection. And the abdomen is composed of a composite abdomen composed of a plurality of section steels having different cross-sectional dimensions, and the abdomen is composed of a single main beam and a sub-beam joined to the main beam. It is a frame structure of a mountain retaining wall, wherein the end of the cut beam is connected near the end of the secondary beam, and at least one end of the fire is arranged across the connecting portion of the main beam and the secondary beam. Connected.
In another aspect of the present invention, the composite bulge has a secondary beam interposed between adjacent main beams, one end of one fire is connected to the main beam, and one end of the other fire is used as a secondary beam. You may connect.
In another embodiment of the present invention, the heights of the main beam and the sub beam are equal.
In another embodiment of the present invention, the secondary beam is composed of an inner beam and an outer beam, and the inner beam and the outer beam have the same cross section.
In another embodiment of the present invention, the main beam may be a high strength steel and the sub beam may be a combination of general structural rolled steel.
In another embodiment of the present invention, H-shaped steel can be used as the main beam and the sub beam.

本考案によれば、以下に記載する効果のうち、少なくとも何れか１つの効果を得ることができる。
（１）複合腹起のバリエーションが豊富となる。
複合腹起の設計の自由度が向上し、現場条件に最適な複合腹起を提供することができる。
（２）架構構造のバリエーションが豊富となる。
切梁を用いない山留構造だけでなく、切梁を用いた山留め構造でも支間長の延長化が可能である。よって、様々な山留壁の架構構造への適用が可能である。 According to the present invention, at least one of the effects described below can be obtained.
(1) There are many variations of composite abdomen.
The degree of freedom in designing the composite abdomen is improved, and a composite abdomen optimal for the field conditions can be provided.
(2) Abundant variations in frame structure.
The span length can be extended not only in the mountain retaining structure that does not use a cut beam, but also in the retaining structure that uses a cut beam. Therefore, it can be applied to various frame structures of mountain walls.

本考案にに係る複合腹起の一部を示す構成概略図。BRIEF DESCRIPTION OF THE DRAWINGS The structure schematic which shows a part of composite abdominal according to this invention. 山留壁の架構構造の概略図。Schematic of the frame structure of Yamadome wall. 本考案にに係る山留壁の架構構造の概略図。Schematic of the frame structure of the mountain wall according to the present invention. 本考案にに係る山留壁の架構構造の概略図。Schematic of the frame structure of the mountain wall according to the present invention.

まず始めに、本考案に係る山留壁の架構構造に使用する、複合腹起の詳細について説明する。   First, the details of the composite uplift used for the frame structure of the mountain retaining wall according to the present invention will be described.

＜１＞全体構成。
図１は複合腹起の一部を示す構成概略図である。
複合腹起１０は、主梁１１と、該主梁１１と接合する副梁１２とからなり、主梁１１と副梁１２との間はボルト連結等の公知の連結方法により一体化した構成を呈する。 <1> Overall configuration.
FIG. 1 is a schematic diagram showing a part of a composite abdomen.
The composite bulge 10 includes a main beam 11 and a secondary beam 12 joined to the main beam 11, and the main beam 11 and the secondary beam 12 are integrated by a known connection method such as bolt connection. Present.

主梁１１と副梁１２の連結態様は特段限定しない。
これは、最終的に一箇所でも主梁１１と副梁１２とが連結した態様を呈する複合腹起１０であれば良く、その他の箇所で、主梁１１同士や副梁１２同士が連結した箇所が含まれていても構わない。また、腹起上で支間を長く確保したい箇所に、主梁１１が位置するような配置形態であれば如何なる連結態様を呈しても良い。 The connection mode of the main beam 11 and the sub beam 12 is not particularly limited.
This may be a composite bulge 10 that finally exhibits a mode in which the main beam 11 and the sub beam 12 are connected at one place, and the other places where the main beams 11 and the sub beams 12 are connected. May be included. Moreover, as long as the main beam 11 is located in a place where it is desired to ensure a long span between the stomachs, any connection mode may be presented.

複合腹起１０を構成する各鋼材は、本例ではＨ形鋼を使用しているが、他の断面形状（Ｔ形、Ｉ形、Ｃ形など）の鋼材を適用することもできる。   Although each steel material constituting the composite bulge 10 uses H-shaped steel in this example, steel materials having other cross-sectional shapes (T-shaped, I-shaped, C-shaped, etc.) can also be applied.

＜２＞主梁。
主梁１１は、山留壁を支保する単数又は複数の高強度鋼（高張力鋼）である。
主梁１１は、引張強さが４９０Ｎ／ｍｍ2以上の鋼材を用いることができる。
主梁１１の素材には、例えばＳＭ４９０Ａ、ＳＭ４９０ＹＢ、ＳＭ５２０Ｃ、ＳＭＡ４９０等の高強度鋼を使いることができる。
なお、主梁１１の素材は上記した例示した素材に限定されず、同等以上の強度を有する鋼材であれば適用可能である。 <2> Main beam.
The main beam 11 is one or a plurality of high-strength steels (high-tensile steels) that support the mountain retaining wall.
As the main beam 11, a steel material having a tensile strength of 490 N / mm 2 or more can be used.
For the material of the main beam 11, for example, high-strength steel such as SM490A, SM490YB, SM520C, and SMA490 can be used.
In addition, the raw material of the main beam 11 is not limited to the raw material illustrated above, It is applicable if it is a steel material which has the intensity | strength more than equivalent.

＜３＞副梁。
副梁１２は、主梁１１と共に山留壁を支保する梁材である。
副梁１２は、主梁１１よりも低強度に構成する。
副梁１２を主梁１１よりも低強度に構成する方法としては、以下の方法ならびにこれらの方法を適宜組み合わせる方法が考えられる。 <3> Secondary beam.
The secondary beam 12 is a beam material that supports the mountain retaining wall together with the main beam 11.
The secondary beam 12 is configured to have a lower strength than the main beam 11.
As a method of constructing the sub beam 12 with a lower strength than the main beam 11, the following methods and a method of appropriately combining these methods can be considered.

＜３．１＞複数部材の組合せによる強度設計。
副梁１２を、複数部材を組み合わせた構造とする方法が考えられる。
例えば、図１に示すように、副梁１２を内方梁１２１と外方梁１２２を積層した構造とすることができる。
この構成であれば、主梁１１および副梁１２の素材が同一であっても、副梁１２の強度を抑えることができる。 <3.1> Strength design by combining multiple members.
A method is conceivable in which the secondary beam 12 has a structure in which a plurality of members are combined.
For example, as shown in FIG. 1, the secondary beam 12 may have a structure in which an inner beam 121 and an outer beam 122 are stacked.
If it is this structure, even if the material of the main beam 11 and the secondary beam 12 is the same, the intensity | strength of the secondary beam 12 can be suppressed.

＜３．２＞素材の変更による強度設計。
副梁１２の素材を、主梁１１よりも強度の低い素材とする方法が考えられる。
主梁１１に高強度の鋼材（例えばＳＭ４９０Ａ等）を使用している場合には、副梁１２には、例えば一般構造用圧延鋼材（例えばＳＳ４００材）を使用すればよい。
この構成であれば、主梁１１および副梁１２の断面形状が同一であっても、副梁１２の強度を抑えることができる。 <3.2> Strength design by changing material.
A method is conceivable in which the material of the secondary beam 12 is a material having a lower strength than that of the main beam 11.
In the case where a high-strength steel material (for example, SM490A) is used for the main beam 11, for example, a general structural rolled steel material (for example, SS400 material) may be used for the secondary beam 12.
With this configuration, even if the cross-sectional shapes of the main beam 11 and the secondary beam 12 are the same, the strength of the secondary beam 12 can be suppressed.

＜３．３＞断面係数の変更。
副梁１２のサイズや形状を変更して、副梁１２の断面係数を主梁１１の断面係数よりも低い値とする方法が考えられる。
この構成であれば、主梁１１および副梁１２の素材が同一であっても、副梁１２の強度を抑えることができる。 <3.3> Change in section modulus.
A method is conceivable in which the size and shape of the secondary beam 12 are changed so that the sectional modulus of the secondary beam 12 is lower than the sectional modulus of the main beam 11.
If it is this structure, even if the material of the main beam 11 and the secondary beam 12 is the same, the intensity | strength of the secondary beam 12 can be suppressed.

＜３．４＞強度調整方法の選択基準。
副梁１２を主梁１１よりも低強度に設計する際に、上記方法の何れを選択するかは、以下の有益性等も考慮することができる。 <3.4> Selection criteria for strength adjustment method.
When designing the secondary beam 12 to be lower in strength than the main beam 11, which of the above methods is selected can also take into account the following benefits.

［素材を異なる組合せにした場合の有益性］
例えば、副梁１２の素材に一般鋼材（例えばＳＳ４００材）を用い、主梁１１の素材として高強度の鋼材（例えばＳＭ４９０Ａ等）を用いた場合、複合腹起１０の耐力向上、腹起の軽量化および資材コストの削減の並立を図ることができる点で有益性がある。 [Benefits of different combinations of materials]
For example, when a general steel material (for example, SS400 material) is used as the material of the secondary beam 12 and a high-strength steel material (for example, SM490A) is used as the material of the main beam 11, the composite bulge 10 has improved proof stress and the galvanized lightness. This is beneficial in that it can achieve parallelization and reduction of material costs.

［山留壁からの突出長を同一とした場合の有益性］
内方梁１２１と外方梁１２２を並べて構成する副梁１２と、主梁１１とについて、山留壁からの突出長（高さ）を等しい関係とすることができる。
例えば、図１に示すように、副梁１２を構成する各梁の高さをＨ1、フランジ幅をＢ1とし、主梁１１の高さをＨ2、フランジ幅Ｂ2とすると、主梁１１の高さＨ2と副梁１２の高さ（Ｈ1×２）は等しく、また主梁１１のフランジ幅Ｂ2は副梁１２のフランジ幅Ｂ1と等しい関係とすることができる。
当該構造によれば、両梁１１，１２の継手部１３に段差が生じない点で有益である。 [Benefit when projecting length from Yamadome wall is the same]
The protrusion length (height) from a mountain retaining wall can be made into the same relationship about the sub-beam 12 which comprises the inner beam 121 and the outer beam 122 side by side, and the main beam 11.
For example, as shown in FIG. 1, when the height of each beam constituting the secondary beam 12 is H 1 , the flange width is B 1 , the height of the main beam 11 is H 2 , and the flange width B 2 , the main beam the height H 2 and the height of the Fukuhari 12 of 11 (H 1 × 2) are equal, also the flange width B 2 of the main beam 11 can be equal relationship between flange width B 1 of Fukuhari 12.
According to the said structure, it is useful at the point by which a level | step difference does not arise in the joint part 13 of both the beams 11 and 12. FIG.

［断面形状を同一形状にした場合の有益性］
主梁１１の断面形状と副梁１２の断面形状を同一形状とした場合、両梁１１，１２の継手部１３に段差をなくして連結構造を簡略化することができ、さらに複合腹起１０の構造計算が容易となる点で有益である。 [Benefit when the cross-sectional shape is the same]
When the cross-sectional shape of the main beam 11 and the cross-sectional shape of the sub-beam 12 are the same shape, the connecting structure 13 of both the beams 11 and 12 can be eliminated to simplify the connection structure. This is advantageous in that the structure calculation is easy.

次に、上記した複合腹起を用いた山留壁の架構構造例について、以下に説明する。   Next, an example of a frame structure of a mountain retaining wall using the above-described composite erection will be described below.

［山留壁の架構構造例１］
＜１＞全体構成。
図２は、山留壁の架構構造の概略図である。
本例に係る山留壁の架設構造は、山留壁の内面に横架する、複合腹起１０と、前記複合腹起１０とともにコーナー部を形成する別体の腹起２０から、前記複合腹起１０と接続する、火打ち３０と、を少なくとも具備する。 [Yamadome wall structure example 1]
<1> Overall configuration.
FIG. 2 is a schematic diagram of the frame structure of the mountain retaining wall.
The construction structure of the mountain retaining wall according to the present example is composed of a composite abdominal protrusion 10 that is horizontally mounted on the inner surface of the retaining wall, and a separate abdominal protrusion 20 that forms a corner portion together with the composite abdominal protrusion 10. And at least a firing 30 connected to the origin 10.

＜２＞火打ちの接続位置。
前記火打ち３０の端部のうち、複合腹起１０側の端部３１は、前記主梁１１へ接続している。
前記端部３１を主梁１１に連結することで、主梁１１と副梁１２との継手部１３は、前記連結部分よりも左右側の山留壁に近い側に位置することになる。
火打ち３０との連結位置と、両梁１１，１２の継手部１３との位置関係を上記のようにすることで、両梁１１，１２の継手部１３の荷重負担を大幅に軽減でき、さらに最大支間における主梁１１の耐力を確保しつつ、その外側の支間における副梁１２の耐力も維持できて、同一面における合理的な腹起の配置を実現できる。
また、両梁１１，１２の継手部１３の荷重負担が大幅に軽減しつつ、継手部１３の連結に必要なボルトの本数を大幅に削減できる。 <2> Fire connection position.
Of the end portions of the fire striking 30, the end portion 31 on the composite bulge 10 side is connected to the main beam 11.
By connecting the end portion 31 to the main beam 11, the joint portion 13 between the main beam 11 and the sub beam 12 is located closer to the left and right mountain retaining walls than the connection portion.
By making the positional relationship between the connection position with the fire striking 30 and the joint portion 13 of both beams 11 and 12 as described above, the load burden on the joint portion 13 of both beams 11 and 12 can be greatly reduced, and the maximum While ensuring the proof strength of the main beam 11 between the branches, the proof strength of the sub-beam 12 between the outer branches can be maintained, and a rational arrangement of the uplift on the same plane can be realized.
Further, the number of bolts necessary for connecting the joint portions 13 can be greatly reduced while the load burden on the joint portions 13 of both beams 11 and 12 is greatly reduced.

［山留壁の架構構造例２］
図３および図４は、本実施例に係る山留壁の架構構造の概略図である。
本実施例に係る山留壁の架設構造は、山留壁の内面に横架する、複合腹起１０と、前記複合腹起１０に接続する切梁４０、の何れかから、前記複合腹起へと接続する、火打ち３０と、を少なくとも具備する。 [Yamadome wall frame structure example 2]
3 and 4 are schematic views of the frame structure of the mountain retaining wall according to the present embodiment.
The construction structure of the mountain retaining wall according to the present embodiment is such that the composite abdominal erection is made up of either a composite abdominal bulge 10 that is laid across the inner surface of the dome retaining wall or a cut beam 40 connected to the composite abdominal erection 10 And at least a firing 30 connected to the.

スパン長の最も長い区間に主梁１１を配置し、この主梁１１の両端にそれぞれ副梁１２を配置した図３の複合腹起１０では、切梁４０の端部を副梁１２の端部近くに連結すると共に、切梁４０から延設した一方の火打ち３０ａの一端を主梁１１に連結し、切梁４０から延設した他方の火打ち３０ｂの一端を副梁１２に連結している。   In the composite bulge 10 of FIG. 3 in which the main beam 11 is arranged in the section with the longest span length and the sub-beams 12 are arranged at both ends of the main beam 11, the end of the cut beam 40 is the end of the sub-beam 12. While being connected in the vicinity, one end of one fire 30 a extending from the beam 40 is connected to the main beam 11, and one end of the other fire 30 b extending from the beam 40 is connected to the sub-beam 12.

隣り合う主梁の間に副梁を介装した図４の複合腹起１０では、切梁４０の端部を副梁１２に連結すると共に、切梁４０から延設した左右一対の火打ち３０の一端をそれぞれ主梁１１に連結している。
すなわち、継手部１３は、切梁４０と複合腹起１０との連結箇所（連結部４１）と、火打ち３０と複合腹起１０との連結箇所との間にあるように配置している。
本実施例によれば、少なくとも一辺の山留壁に対し、複合腹起１０を連続させた態様での適用が可能である。
さらに、複合腹起と切梁と火打ちを組み合せることで、規模の大きな構造物であっても切梁間隔を広げて大きな作業空間を確保できるから、クレーン作業による荷扱いや掘削の施工効率が向上するだけでなく、作業の安全性も格段に向上する。 In the composite bulge 10 of FIG. 4 in which the secondary beam is interposed between the adjacent main beams, the end of the cut beam 40 is connected to the secondary beam 12 and a pair of left and right firings 30 extending from the cut beam 40 are connected. One end is connected to the main beam 11.
That is, the joint portion 13 is disposed so as to be between the connection portion (connection portion 41) between the cut beam 40 and the composite bulge 10 and the connection portion between the firing 30 and the composite bulge 10.
According to the present embodiment, it is possible to apply in a form in which the composite erection 10 is made continuous with respect to at least one side wall.
In addition, by combining the composite bulge, cutting beams, and firing, it is possible to secure a large working space by expanding the interval between the cutting beams, even for large structures, improving the handling efficiency of crane work and excavation construction efficiency. In addition to this, work safety is also greatly improved.

［山留壁の架構構造例３］
本考案は、先の架構構造例２に示す左右の腹起を、複合腹起に置き換えることもできる（図示せず）。このとき、置き換えた複合腹起側への火打ちの端部は、同様に主梁へと連結することが望ましい。 [Example of frame structure of Yamadome wall 3]
The present invention can also replace the left and right abdominals shown in the previous frame structure example 2 with a composite abdomen (not shown). At this time, it is desirable that the replaced end portion of the fire to the composite ventral side is similarly connected to the main beam.

１０ 複合腹起
１１ 主梁
１２ 副梁
１２１ 内方梁
１２２ 外方梁
１３ 継手部
２０ 腹起
３０ 火打ち
３１ 端部
４０ 切梁
４１ 連結部 DESCRIPTION OF SYMBOLS 10 Composite abduction 11 Main beam 12 Auxiliary beam 121 Inner beam 122 Outer beam 13 Joint part 20 Abdomen 30 Burning 31 End 40 Cutting beam 41 Connection part

Claims (6)

山留壁の内面に横架した腹起と、腹起に連結した複数の切梁と、切梁と腹起の間に架設した一対の火打ちとを具備し、前記腹起が断面寸法の異なる複数の形鋼を組み合せた複合腹起で構成し、前記複合腹起が単体の主梁と、該主梁に接合して配置した副梁とからなる山留壁の架構構造であって、
前記切梁の端部を副梁の端部近くに連結し、
主梁と副梁の連結部を跨いで配設した少なくとも一方の火打ちの一端を主梁に連結したことを特徴とする、
山留壁の架構構造。 A plurality of erections horizontally mounted on the inner surface of the mountain retaining wall, a plurality of beams connected to the erections, and a pair of fire stroking installed between the beam and the erections, the plurality of angulations having different cross-sectional dimensions It is composed of a composite bulge in which the shape steel is combined, and the composite bulge is a frame structure of a mountain retaining wall composed of a single main beam and a secondary beam joined to the main beam,
Connecting the end of the beam near the end of the secondary beam;
It is characterized in that one end of at least one fire arrangement arranged across the connecting portion of the main beam and the sub beam is connected to the main beam,
The frame structure of the Yamadome wall. 前記複合腹起が隣り合う主梁の間に副梁を介装していて、一方の火打ちの一端を主梁に連結し、他方の火打ちの一端を副梁に連結したことを特徴とする、請求項１に記載の山留壁の架構構造。   The composite bulge has a secondary beam interposed between adjacent main beams, one end of one fire is connected to the main beam, and one end of the other fire is connected to the secondary beam, The frame structure of the mountain retaining wall according to claim 1. 前記主梁と副梁の高さが等しい寸法関係にあることを特徴とする、請求項１または２に記載の山留壁の架構構造。   The frame structure of a mountain retaining wall according to claim 1 or 2, wherein the height of the main beam and the sub beam are equal in dimensional relation. 前記副梁が積層した内方梁と外方梁とからなり、該内方梁および外方梁の断面が同一寸法であることを特徴とする、請求項１乃至３の何れか一項に記載の山留壁の架構構造。   The inner beam and the outer beam, in which the sub beams are stacked, have cross sections of the inner beam and the outer beam, and have the same dimensions. The structure of the Yamatome wall. 前記主梁が高強度鋼であり、前記副梁が一般構造用圧延鋼材の組み合せであることを特徴とする、請求項１乃至４の何れか一項に記載の山留壁の架構構造。   The frame structure of the mountain retaining wall according to any one of claims 1 to 4, wherein the main beam is high strength steel and the sub beam is a combination of general structural rolled steel. 前記主梁と副梁がＨ形鋼製であることを特徴とする、請求項１乃至５の何れか一項に記載の山留壁の架構構造。   The frame structure of a mountain retaining wall according to any one of claims 1 to 5, wherein the main beam and the sub beam are made of H-shaped steel.
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