JPS59652B2 - Jisuberiyokushikouhou - Google Patents
JisuberiyokushikouhouInfo
- Publication number
- JPS59652B2 JPS59652B2 JP50069126A JP6912675A JPS59652B2 JP S59652 B2 JPS59652 B2 JP S59652B2 JP 50069126 A JP50069126 A JP 50069126A JP 6912675 A JP6912675 A JP 6912675A JP S59652 B2 JPS59652 B2 JP S59652B2
- Authority
- JP
- Japan
- Prior art keywords
- ground
- tunnel
- sliding
- concrete
- force
- 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
Links
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Description
【発明の詳細な説明】
山地や丘陵或いは台地の斜面の一部で、地塊の平衡状態
が破られて、地塊が下方、或いは側方に移動していく現
象を一般に山崩れまたは崩壊と呼称している。[Detailed Description of the Invention] A phenomenon in which the equilibrium state of the ground mass is broken and the ground mass moves downward or sideways on a part of the slope of a mountain, hill, or plateau is generally called a landslide or collapse. are doing.
このような現象は台風による豪雨、局地的な前線性の集
中豪雨、或いは梅雨、秋の長雨、融雪水等、所謂自然の
要因によって誘発され、また道路建設、宅地造成等に伴
う斜面の頭部載荷等の人為的な要因によっても誘発され
る。This phenomenon is caused by so-called natural factors, such as heavy rain caused by typhoons, localized frontal torrential rain, rainy season, long rain in autumn, snowmelt, etc., and also caused by the slope head caused by road construction, residential land development, etc. It can also be induced by artificial factors such as loading.
この場合、崩壊の発生する斜面は一般に急峻なものが多
いが、なかには比較的に緩やかな斜面でもしばしば発生
しており、このときの運動は極めて緩慢であり、且つ継
続的なものが多く、これを一般に崩壊と区別して、地上
りと呼んでいる。In this case, the slope where the collapse occurs is generally steep, but it also often occurs on relatively gentle slopes, and the movement at this time is extremely slow and continuous, and this is generally called terrestrialization to distinguish it from collapse.
地上りは一般に低角度の上面によって緩斜面に辷りを生
じる場合が被害が大きく、比較的緩やかな斜面、それも
5〜20°の緩斜面に多発するものであって、本発明は
この地上りを抑止する工法に係るものである。In general, damage caused by slipping on gentle slopes due to the low angle of the upper surface of the ground is severe, and this often occurs on relatively gentle slopes, especially gentle slopes of 5 to 20 degrees. This relates to a construction method that suppresses
従来の地上り抑止工法は抑止構造物として鋼製または鉄
筋コンクリート製の杭からなる抑止構造物を地中に設け
る杭挿入工法か、または抑1F構造物の大口径化を図っ
たシャフト工法かが主に用いられてb)た。Conventional above-ground restraint construction methods mainly include a pile insertion method in which a restraint structure consisting of steel or reinforced concrete piles is installed underground, or a shaft construction method that aims to increase the diameter of the restraint 1F structure. It was used b).
これらの従来の工法はいずれもその抑止構造物の構成材
料の鋼材の剪断抵抗力、曲げ抵抗力等を利用する抑止工
法であった。All of these conventional construction methods utilize the shear resistance, bending resistance, etc. of the steel material that constitutes the restraint structure.
一般に鋼材の応力度は、剪断応力度が引張応力度に比べ
て著しく小さいことがよく知られているが、これから容
易に推定されるように、巨大な地上り滑動力に対抗する
ためには、杭木数を増加するかもしくは杭径の大口径化
を図るかするほかなく、工法自体の困難性を増すばかり
でなく工費の巨額化をもまねき、はなはだ不経済な抑止
工法とならざるを得なかった。Generally speaking, it is well known that the shear stress of steel materials is significantly smaller than the tensile stress, but as can be easily inferred from this, in order to resist the huge ground sliding force, There is no choice but to increase the number of piles or increase the diameter of the piles, which not only increases the difficulty of the construction method itself but also increases the construction cost, making it a very uneconomical method of restraint construction. There wasn't.
この発明は従来の地上り抑止工法の斜上の欠点を除去し
た抑止工法を提供することを目的とし、地上り抑止力を
抑止構造物用鋼材の引張応力によって得ることにより、
前述の難点を合理的に克服したものである。The purpose of this invention is to provide a deterrent method that eliminates the drawbacks of the conventional above-ground deterrent construction method, and by obtaining the above-ground deterrent force by the tensile stress of the steel material for the deterrent structure,
This method rationally overcomes the above-mentioned difficulties.
以下にこの発明をその実施例を示す図面によって説明す
る。The present invention will be explained below with reference to drawings showing embodiments thereof.
まず地上り地の地中の、地上りの安定解析によって求め
られた位置に、同解析によって判明した地上りの抑IF
に必要な付加すべき抵抗力を得られるだけの寸法・形状
を有するトンネル4を、滑動土塊2を貫通し、すべり面
1を横切って安定した基盤3内に達するようにほぼ水平
に掘削する。First, the ground restraint IF found by the analysis is placed underground at the location determined by the ground stability analysis.
A tunnel 4 having a size and shape sufficient to obtain the added resistance force required for this is excavated almost horizontally so as to penetrate the sliding earth mass 2, cross the sliding surface 1, and reach the stable base 3.
この場合、地上りの安定解析によって、トンネルの受は
持つべき滑動土塊の巾に対して、所定の安定度を保たせ
るために付加すべき抵抗力は、主に安定した基盤3とト
ンネル4の周辺との摩擦力(剪断抵抗力)によるもので
あるから、基盤内へ延長した1−ンネルの部分は長い程
よいが実用と手数とのために基盤内のトンネル延長部分
を縮小することが必要であり、このために、ロックアン
カー7の併設、もしくはトンネル外周に凸部11を設け
ることがよく、これが所要の抵抗力を保有させることに
なる。In this case, ground stability analysis shows that the resistance force that should be added in order to maintain the specified stability is mainly due to the stable foundation 3 and the tunnel 4, relative to the width of the sliding soil mass that the tunnel support should have. This is due to the frictional force (shearing resistance) with the surrounding area, so the longer the length of the tunnel extending into the foundation, the better, but for practicality and cost reasons, it is necessary to reduce the length of the tunnel extension inside the foundation. For this purpose, it is preferable to provide a lock anchor 7 or a convex portion 11 on the outer periphery of the tunnel, which will maintain the required resistance force.
また滑動土塊2の局部的移動、あるいは複数のトンネル
4間の抜出し防止のために、地表10にコンクリートブ
ロック・梁・版その他の地覆構造物8を設置し、地覆構
造物とトンネル4との間をタイロッド9で結ぶことが容
易にでき、その結果として地覆構造物8の安定度を著し
く向上させることが出来る。In addition, in order to prevent local movement of the sliding earth mass 2 or pull-out between multiple tunnels 4, concrete blocks, beams, slabs, and other ground covering structures 8 are installed on the ground surface 10, and the ground covering structures and the tunnels 4 are The tie rods 9 can be easily connected between the two, and as a result, the stability of the ground covering structure 8 can be significantly improved.
トンネル4を掘削した後に、地上りの安定解析によって
得られた所定の抵抗力を負担させるために、所要の引張
応力の引張鋼材5をトンネル内部に配置し、残余のトン
ネル内部空間にコンクリートを充填し、地上り抑止用構
造物を完成する。After excavating the tunnel 4, a tensile steel material 5 with the required tensile stress is placed inside the tunnel in order to bear the predetermined resistance force obtained from the ground stability analysis, and the remaining tunnel interior space is filled with concrete. and complete the ground deterrent structure.
この場合必要ならば、通常に行われているプレストレス
コンクリート工法の手法を用いて、l・ンネル4にプレ
ストレスを導入することも可能であり、すべり面1に対
して直接に剪断抵抗力を付加することによる地上り抑止
の効果を増加し得る。In this case, if necessary, it is also possible to introduce prestress into the l-channel 4 using the commonly used prestress concrete method, thereby directly applying shear resistance to the sliding surface 1. The effectiveness of ground deterrence can be increased by adding
またトンネル4の掘削中はもとより、トンネル完成後も
、トンネル4内に適当なる排水設備をトンネル外まで設
けることにより、地上り地内の地中水を排除し、地上り
抑止効果を向上することもできる。In addition, not only during the excavation of the tunnel 4, but also after the tunnel is completed, by installing appropriate drainage equipment inside the tunnel 4 to the outside of the tunnel, ground water within the ground above ground can be removed and the effect of preventing ground water from entering the ground can be improved. can.
この発明によれば、以上のように、地上りの滑動力にI
−ンネル4の中に配置した鋼材5の引張り応力を対抗さ
せて、地上りの抑止を図るので、大規模な地上りに対し
ても、容易でかつ経済的な、また安全性の高い工法を施
工でき、工業上火なる利点がある。According to this invention, as described above, the sliding force on the ground is
- Since the tensile stress of the steel material 5 placed in the tunnel 4 is counteracted to prevent ground climbing, it is easy, economical, and highly safe construction method even for large-scale ground climbing. It is easy to construct and has the advantage of being industrially fire resistant.
図面はこの発明の工法の1実施例を示した模式断面図で
ある。
1・・・・・・すべり面;2・・・・・・滑動土塊;3
・・・・・・基盤;4・・・・・何・ンネル;5・・・
・・・引張鋼材;6・・・・・・コンクリート;7・・
・・・・ロックアンカー;8・・・・・・地覆構造物(
版・ブロック・梁);9・・・・・・クイロッド;10
・・・・・・地表。The drawing is a schematic sectional view showing one embodiment of the construction method of the present invention. 1... Sliding surface; 2... Sliding earth mass; 3
・・・・・・Foundation; 4... What Nervous; 5...
...Tensile steel; 6...Concrete; 7...
...Rock anchor; 8... Ground cover structure (
plate, block, beam); 9... Quirod; 10
・・・・・・The surface of the earth.
Claims (1)
ネルを設け、地上り滑動力に対抗しうる引張力を有する
鋼材を配置したコンクリートを前記トンネル内に充填す
ることを特徴とする地上り抑止工法。 2 地上り地の地中に辷り面を横切ってほぼ水平なトン
ネルを設け、地上り滑動力に対抗しうる引張力を有する
鋼材を配置したコンクリートを前記トンネル内に充填し
、前記トンネルの基盤部内にある部分に凸部またはアン
カーを設け、滑動土塊部分には地表の地覆構造物と前記
トンネルとを結ぶタイロッドを設ける地上り抑止工法。[Scope of Claims] 1. A horizontal tunnel is provided in the ground above ground across the sliding surface, and the tunnel is filled with concrete in which steel members having a tensile force capable of resisting the sliding force on the ground are arranged. This method is characterized by the following: 2. A nearly horizontal tunnel is provided in the ground above ground across the sliding surface, and the tunnel is filled with concrete having a tensile force capable of resisting the ground sliding force, and the inside of the base of the tunnel is This method involves installing a convex part or an anchor in a part of the earth, and installing a tie rod in the sliding earth mass part to connect the tunnel to the ground covering structure on the ground surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50069126A JPS59652B2 (en) | 1975-06-10 | 1975-06-10 | Jisuberiyokushikouhou |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50069126A JPS59652B2 (en) | 1975-06-10 | 1975-06-10 | Jisuberiyokushikouhou |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS51145108A JPS51145108A (en) | 1976-12-13 |
JPS59652B2 true JPS59652B2 (en) | 1984-01-07 |
Family
ID=13393623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50069126A Expired JPS59652B2 (en) | 1975-06-10 | 1975-06-10 | Jisuberiyokushikouhou |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59652B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5876615A (en) * | 1981-10-29 | 1983-05-09 | Okabe Co Ltd | Method of stabilizing slope surface using lock bolt |
JP6175791B2 (en) * | 2013-02-14 | 2017-08-09 | ライト工業株式会社 | Ground reinforcement method and structure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS499482A (en) * | 1972-05-25 | 1974-01-28 |
-
1975
- 1975-06-10 JP JP50069126A patent/JPS59652B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS499482A (en) * | 1972-05-25 | 1974-01-28 |
Also Published As
Publication number | Publication date |
---|---|
JPS51145108A (en) | 1976-12-13 |
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