JPH0368170B2 - - Google Patents
Info
- Publication number
- JPH0368170B2 JPH0368170B2 JP58175512A JP17551283A JPH0368170B2 JP H0368170 B2 JPH0368170 B2 JP H0368170B2 JP 58175512 A JP58175512 A JP 58175512A JP 17551283 A JP17551283 A JP 17551283A JP H0368170 B2 JPH0368170 B2 JP H0368170B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- web
- steel
- wall
- steel material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 32
- 239000002689 soil Substances 0.000 description 12
- 229910000278 bentonite Inorganic materials 0.000 description 6
- 239000000440 bentonite Substances 0.000 description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 6
- 239000004568 cement Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 4
- 239000011162 core material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
Description
【発明の詳細な説明】
［技術分野］
本発明は地盤内に山留壁を構築するのに用いる
山留壁用の鋼材に関する。Detailed Description of the Invention [Technical Field] The present invention relates to a steel material for a retaining wall used for constructing a retaining wall in the ground.
［背景技術］
従来第１図に示すように横断面状の溝鋼５の
両端に連結用継手部４を設けた鋼材を用いて山留
壁を形成したり、あるいは第２図に示すように等
辺Ｈ型鋼６の各フランジ７の両端に連結用継手部
４を設けた鋼材を用いて山留壁を形成するものが
知られている。等辺Ｈ型鋼６を用いたものは溝鋼
５用いたものに比べて単位重量比での剛性が大き
く、必要な剛性を得るために薄肉のものを使用で
きて経済的であるが、他方この等辺Ｈ型鋼６を用
いたものは山留壁が横断面において非直線となつ
たものあるいはコーナを有するものの場合、これ
らを形成する際には第３図に示すような隣り合う
等辺Ｈ型鋼６のフランジ７同士が邪魔となつて接
続できないものであり、従つて非直線状となつた
山留壁やあるいはコーナ部を有する山留壁は形成
できないという問題があつた。また等辺Ｈ型鋼６
を地盤内で横に並べて山留壁を構築した場合、各
鋼材のウエブ８が地盤を仕切ることになり、ウエ
ブ８の両側の地盤の結合力が充分とれないという
問題があつた。[Background Art] Conventionally, as shown in FIG. 1, a retaining wall is formed using a steel material in which connecting joints 4 are provided at both ends of a cross-sectional groove steel 5, or as shown in FIG. It is known that a retaining wall is formed using a steel material in which a connecting joint portion 4 is provided at both ends of each flange 7 of an equilateral H-shaped steel 6. Those using equilateral H-shaped steel 6 have greater rigidity per unit weight ratio than those using groove steel 5, and are economical because they can use thin-walled steel to obtain the necessary rigidity. When using H-beams 6, if the retaining walls are non-straight in cross section or have corners, when forming these, the flanges of adjacent equilateral H-beams 6 as shown in Figure 3 should be used. 7 become a hindrance and cannot be connected to each other.Therefore, there was a problem in that it was impossible to form a retaining wall with a non-linear shape or a retaining wall with a corner portion. Also, equilateral H type steel 6
When constructing a retaining wall by arranging them horizontally in the ground, the webs 8 of each steel material partition the ground, and there was a problem that the bonding force between the ground on both sides of the webs 8 was not sufficient.
［発明の目的］
本発明は上記の点に鑑みて為されたものであ
り、その目的とするところは強度が強く、しかも
経済的であり、また非直線状となつたりコーナ部
を有する山留壁であつてもこれを容易に作り上げ
ることができるのは勿論のこと、地盤との結合力
が高く、さらに地盤との結合力を高めるために鋼
材に透孔を設けたといえども座屈強度が低下する
ことのない実用上優れた山留壁用の鋼材を提供す
ることである。[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to provide a mountain stop that is strong, economical, and has a non-linear shape or a corner portion. Not only can this be easily constructed as a wall, but it also has a high bonding force with the ground, and even if holes are made in the steel material to increase the bonding force with the ground, the buckling strength is low. It is an object of the present invention to provide a steel material for retaining walls that is excellent in practical use and does not deteriorate.
［発明の開示］
本発明に係る山留用の鋼材では、ウエブの両端
に巾広のフランジと巾狭のフランジを有する不等
辺Ｈ型鋼であつて、巾狭のフランジの肉厚が巾広
のフランジの肉厚よりも厚く設定され、隣り合う
不等辺Ｈ型鋼同士を連結するための連結用継手部
が夫々巾広のフランジの両端に設けられ、複数の
透孔がウエブに巾広のフランジ側に偏つた位置で
ウエブの長手方向に沿つて隔設され、巾広のフラ
ンジのウエブとの連結部に長手方向全長に亘る断
面略Ｕ字状のリブが形成された。[Disclosure of the Invention] The steel material for mountain retaining according to the present invention is a scalene H-shaped steel having a wide flange and a narrow flange at both ends of the web, and the wall thickness of the narrow flange is a wide flange. Connecting joints for connecting adjacent scalene H-shaped steels are provided at both ends of each wide flange, and multiple through holes are provided in the web on the wide flange side. Ribs having a generally U-shaped cross section and extending over the entire length in the longitudinal direction were formed at the connecting portions of the wide flanges to the web, which were spaced apart along the longitudinal direction of the web at lopsided positions.
以下本発明を実施例に基づいて詳述する。本発
明に用いる鋼材は以下のような構成をしている。
すなわち従来の細巾Ｈ型鋼のフランジの一方を両
側に延長して延長部を有する長い方のフランジ１
としてある。従つてこの延長部を有する長い方の
フランジ１は短い方のフランジ２より横巾が長く
なつているものである。長い方のフランジ１の両
端部に存在する延長部先端には更に横断面Ｃ字
状、鉤状等の連結用継手部４が設けてある。ここ
で本発明の山留壁用の鋼材９の具体例を示すと、
第５図において、Ａ＝400mm、Ｂ＝600mm、B′＝
200mm、t1＝4.5mm、t2＝６mm、t3＝18mmであるが、
必ずしも上記の数値のものにのみ限定されないの
は勿論である。しかしながら、巾狭のフランジ２
の肉厚は上記数値のように巾広のフランジ１の肉
厚よりも厚くするものである。ウエブ３には、第
４図に示すように、一辺を巾広のフランジ１との
結合部に合致させた台形状の透孔１４が長手方向
に沿つて定間隔設けてある。勿論、この透孔１４
の形状はこれに限定されるものでない。山留壁は
上記構成の鋼材を用いて構築されるものであり、
第７図に示すように、地盤１０にソイルセメント
柱やソイルベントナイト柱１１等の柱列を形成し
（または単に土砂を撹乱した壁を形成する場合も
ある）、このソイルセメント柱やソイルベントナ
イト柱１１等が未硬化のときに鋼材９を挿入する
と共に次の鋼材９を連結用継手部４をガイドとし
て係入しながら挿入して、隣り合う鋼材９同士を
連結用継手部４で連結し、同様にして次々と鋼材
９同士を連結用継手部４で連結するものであり、
このようにして山留壁用の鋼材９を芯材とするソ
イルセメント壁乃至ソイルベントナイト壁又は撹
乱土砂壁１２、すなわち山留壁を形成するのであ
る。ここで鋼材９は山留壁の応力部材となり且つ
連結用継手部４で連結することで止水部材の役目
をするものであり、鋼材９の建て込み時、各鋼材
９のウエブ３に設けた透孔１４に未硬化の壁材
料、すなわち、上記のソイルセメントやソイルベ
ントナイト、あるいは撹乱土砂が入り込み、ウエ
ブ３両側の壁材料が透孔１４を通じて結合し鋼材
と壁材料との結合力を高めるものである。ところ
で、このように、ウエブ３の長手方向に沿つて複
数の透孔１４が形成されると、鋼材９自体の耐座
屈強度の低下が懸念されるが、本発明では、第５
図及び第６図に示すように、ウエブ３との結合部
となる巾広のフランジ１の中央部に長手方向全長
に亘る断面略Ｕ字状のリブ１６が設けられ、この
リブ１６によつて鋼材９長手方向の耐座屈強度を
高め、透孔１４を設けたことによる耐座屈強度の
低下を補うようになつている。 The present invention will be described in detail below based on examples. The steel material used in the present invention has the following configuration.
In other words, one of the flanges of the conventional narrow H-shaped steel is extended to both sides to create a longer flange 1.
It is as follows. Therefore, the longer flange 1 having this extension has a longer width than the shorter flange 2. At the tips of the extensions present at both ends of the longer flange 1, a connecting joint 4 having a C-shaped cross section, a hook shape, etc. is further provided. Here, a specific example of the steel material 9 for retaining walls of the present invention is shown below.
In Figure 5, A=400mm, B=600mm, B'=
200mm, t 1 = 4.5mm, t 2 = 6mm, t 3 = 18mm,
Of course, it is not necessarily limited to the above numerical values. However, the narrow flange 2
The wall thickness of the flange 1 is made thicker than the wall thickness of the wide flange 1 as shown in the above numerical values. As shown in FIG. 4, the web 3 is provided with trapezoidal through holes 14 at regular intervals along its longitudinal direction, one side of which coincides with the joint with the wide flange 1. Of course, this through hole 14
The shape of is not limited to this. Mountain retaining walls are constructed using steel materials with the above structure,
As shown in Fig. 7, column rows such as soil cement columns and soil bentonite columns 11 are formed on the ground 10 (or a wall simply made of disturbed earth and sand may be formed), and these soil cement columns and soil bentonite columns are formed. 11 etc. are unhardened, insert the steel material 9, and insert the next steel material 9 while using the connecting joint part 4 as a guide, and connect the adjacent steel materials 9 with the connecting joint part 4, In the same manner, steel materials 9 are connected one after another by the connecting joint portion 4,
In this way, a soil cement wall, a soil bentonite wall, or a disturbed earth and sand wall 12, that is, a mountain retaining wall, is formed using the steel material 9 for the mountain retaining wall as a core material. Here, the steel material 9 serves as a stress member of the retaining wall and also serves as a water stop member by connecting with the connecting joint part 4. The uncured wall material, that is, the above soil cement, soil bentonite, or disturbed earth, enters the through hole 14, and the wall materials on both sides of the web 3 are bonded through the through hole 14, increasing the bonding strength between the steel material and the wall material. It is. By the way, if a plurality of through holes 14 are formed along the longitudinal direction of the web 3, there is a concern that the buckling strength of the steel material 9 itself will decrease.
As shown in FIG. 6 and FIG. 6, a rib 16 having a substantially U-shaped cross section and extending over the entire length in the longitudinal direction is provided at the center of the wide flange 1 that serves as the joint portion with the web 3. The buckling strength in the longitudinal direction of the steel material 9 is increased to compensate for the decrease in buckling strength due to the provision of the through holes 14.
［発明の効果］
以上のように本発明にあつては、一方のフラン
ジが他方のフランジより巾広となつているため、
目的とする山留壁が非直線状の場合やコーナ部を
有する場合でも、第７図に示すように、隣り合う
鋼材のうち巾狭の方のフランジ同士が互いに邪魔
となることなく巾広のフランジ同士で横に並ぶ鋼
材同士を連結でき、上記鋼材を地盤中に形成した
ソイルセメント壁乃至ソイルベントナイト壁又は
撹乱土砂壁の中に隣り合う鋼材同士が互いに連結
し合うように連続的に建て込むことにより、剛性
の強い不等辺Ｈ型鋼よりなる鋼材がソイルセメン
ト壁乃至ソイルベントナイト壁又は撹乱土砂壁等
の芯材となることで、強度が強く止水性に富んだ
山留壁が形成できるのは勿論のこと、巾狭のフラ
ンジの肉厚が巾広のフランジより厚く設定されて
いるので、一方のフランジを巾狭のフランジとし
たにも拘わらず、巾狭側のフランジの強度を強く
することができて、不等辺Ｈ型鋼の各部の強度の
バランスをとることができ、強度が安定するもの
である。これに加えて本発明にあつては、鋼材の
ウエブに長手方向に沿つて複数の透孔が形成され
ていることから、鋼材の建て込み時に、地盤内の
壁材料が透孔に入り込んでウエブの両側の壁材料
が透孔を通じて結合でき、しかも不等辺Ｈ型鋼で
あるため、不等辺Ｈ型鋼の鋼材同士を巾広のフラ
ンジ同士で連結した場合、地盤内の壁材料は上記
のようにウエブの両側の壁材料が透孔を通じて結
合できるとともに隣り合う巾狭のフランジの端部
間を通じて不等辺Ｈ型鋼の外の壁材料と結合で
き、その結果地盤を形成する壁材料自体の結合力
及びこの壁材料と鋼材との結合力を高め、強度の
高い山留壁を構築することができるものである。
しかも、複数の透孔がウエブに巾広のフランジ側
に偏つた位置でウエブの長手方向に沿つて隔設さ
れ、巾広のフランジのウエブとの連結部に長手方
向全長に亘る断面略Ｕ字状のリブが形成されたの
で、透孔を設けたことにより強度が弱くなつた部
分をリブにて補強して鋼材の耐座屈強度を高め、
透孔を設けたことによる強度の低下を補い、実用
上充分な耐座屈強度を発揮することができるとい
う利点がある。[Effect of the invention] As described above, in the present invention, since one flange is wider than the other flange,
Even if the target retaining wall is non-linear or has corners, the narrower flanges of adjacent steel members can be used to create a wider width without interfering with each other, as shown in Figure 7. Flanges can connect horizontally arranged steel members, and the above steel members are built continuously into a soil cement wall, soil bentonite wall, or disturbed earth and sand wall formed in the ground so that adjacent steel members are connected to each other. By using the highly rigid scalene H-beam steel as the core material for soil cement walls, soil bentonite walls, disturbed earth and sand walls, etc., it is possible to form mountain retaining walls with strong strength and water-stopping properties. Of course, the wall thickness of the narrow flange is set thicker than that of the wide flange, so even though one flange is made narrow, the strength of the flange on the narrow side must be strengthened. This allows the strength of each part of the scalene H-shaped steel to be balanced and the strength to be stable. In addition, in the present invention, since a plurality of through holes are formed in the steel web along the longitudinal direction, when the steel web is erected, the wall material in the ground enters the through holes and the web The wall materials on both sides of the can be connected through a through hole, and since it is scalene H-shaped steel, when scalene H-shaped steel is connected with wide flanges, the wall material in the ground will be connected to the web as shown above. The wall materials on both sides of the wall can be connected through a through hole, and the wall materials outside the scalene H-shaped steel can be connected through the ends of the adjacent narrow flanges. This increases the bonding strength between the wall material and the steel material, making it possible to construct a high-strength mountain retaining wall.
Moreover, a plurality of through holes are provided in the web along the longitudinal direction of the web at positions biased toward the wide flange side, and the connecting portion of the wide flange with the web has a substantially U-shaped cross section extending over the entire length in the longitudinal direction. As the shape of the rib was formed, the part where the strength was weakened due to the provision of the through hole was reinforced with the rib, increasing the buckling strength of the steel material.
It has the advantage of being able to compensate for the decrease in strength due to the provision of through holes and exhibiting practically sufficient buckling resistance.
第１図は従来例の断面図、第２図は他の従来例
の断面図、第３図は第２図の従来例のものにおい
てコーナ部で連結できない例の説明図、第４図は
本発明の一実施例を示す部分正面図、第５図は第
４図中のＸ−Ｘ線断面図、第６図は第４図中のＹ
−Ｙ線断面図、第７図は同上の一使用例を示す水
平断面図であり、１は巾広のフランジ、２は巾狭
のフランジ、３はウエブ、９は鋼材、１４は透
孔、１６はリブである。
Fig. 1 is a cross-sectional view of a conventional example, Fig. 2 is a cross-sectional view of another conventional example, Fig. 3 is an explanatory diagram of an example in which the conventional example shown in Fig. 2 cannot be connected at the corner, and Fig. 4 is a cross-sectional view of the conventional example. A partial front view showing one embodiment of the invention, FIG. 5 is a sectional view taken along the line X--X in FIG. 4, and FIG.
7 is a horizontal sectional view showing one usage example of the same as above, 1 is a wide flange, 2 is a narrow flange, 3 is a web, 9 is a steel material, 14 is a through hole, 16 is a rib.
Claims (1)
ンジを有する不等辺Ｈ型鋼であつて、巾狭のフラ
ンジの肉厚が巾広のフランジの肉厚よりも厚く設
定され、隣り合う不等辺Ｈ型鋼同士を連結するた
めの連結用継手部が夫々巾広のフランジの両端に
設けられ、複数の透孔がウエブに巾広のフランジ
側に偏つた位置でウエブの長手方向に沿つて隔設
され、巾広のフランジのウエブとの連結部に長手
方向全長に亘る断面略Ｕ字状のリブが形成された
ことを特徴する山留壁用の鋼材。1 A scalene H-shaped steel having a wide flange and a narrow flange at both ends of the web, where the wall thickness of the narrow flange is set thicker than that of the wide flange, and the adjacent scalene H Connecting joints for connecting the shaped steels are provided at both ends of each wide flange, and a plurality of through holes are provided in the web along the longitudinal direction of the web at positions biased toward the wide flange. A steel material for a mountain retaining wall, characterized in that a rib having a substantially U-shaped cross section extending over the entire length in the longitudinal direction is formed at the connection portion of the wide flange with the web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17551283A JPS6065817A (en) | 1983-09-22 | 1983-09-22 | Steel material for landslide protection wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17551283A JPS6065817A (en) | 1983-09-22 | 1983-09-22 | Steel material for landslide protection wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6065817A JPS6065817A (en) | 1985-04-15 |
| JPH0368170B2 true JPH0368170B2 (en) | 1991-10-25 |
Family
ID=15997343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17551283A Granted JPS6065817A (en) | 1983-09-22 | 1983-09-22 | Steel material for landslide protection wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6065817A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628265A (en) * | 2012-04-24 | 2012-08-08 | 天津二十冶建设有限公司 | Latticed steel sheet pile used in foundation pit support and manufacturing method for the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5020761A (en) * | 1973-05-14 | 1975-03-05 | ||
| JPS55155817A (en) * | 1979-05-25 | 1980-12-04 | Nippon Steel Corp | H-beam steel sheet pile for underground structure for reducing propagation of ground vibration |
| JPS56111716A (en) * | 1980-02-04 | 1981-09-03 | Kawasaki Steel Corp | H-shaped steel sheet pile |
| JPS57151725A (en) * | 1981-03-14 | 1982-09-18 | Ishikawajima Constr Material Co Ltd | Underground wall construction work and covering element therefor |
-
1983
- 1983-09-22 JP JP17551283A patent/JPS6065817A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5020761A (en) * | 1973-05-14 | 1975-03-05 | ||
| JPS55155817A (en) * | 1979-05-25 | 1980-12-04 | Nippon Steel Corp | H-beam steel sheet pile for underground structure for reducing propagation of ground vibration |
| JPS56111716A (en) * | 1980-02-04 | 1981-09-03 | Kawasaki Steel Corp | H-shaped steel sheet pile |
| JPS57151725A (en) * | 1981-03-14 | 1982-09-18 | Ishikawajima Constr Material Co Ltd | Underground wall construction work and covering element therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6065817A (en) | 1985-04-15 |
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