JPH0676426U - Rock bed anchorage octopus foot anchor foundation - Google Patents

Rock bed anchorage octopus foot anchor foundation

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Publication number
JPH0676426U
JPH0676426U JP9859191U JP9859191U JPH0676426U JP H0676426 U JPH0676426 U JP H0676426U JP 9859191 U JP9859191 U JP 9859191U JP 9859191 U JP9859191 U JP 9859191U JP H0676426 U JPH0676426 U JP H0676426U
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JP
Japan
Prior art keywords
foundation
rock
bedrock
main leg
main
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.)
Granted
Application number
JP9859191U
Other languages
Japanese (ja)
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JP2559394Y2 (en
Inventor
収平 岩田
Original Assignee
収平 岩田
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 収平 岩田 filed Critical 収平 岩田
Priority to JP9859191U priority Critical patent/JP2559394Y2/en
Publication of JPH0676426U publication Critical patent/JPH0676426U/en
Application granted granted Critical
Publication of JP2559394Y2 publication Critical patent/JP2559394Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Foundations (AREA)

Abstract

(57)【要約】 (修正有) 【目的】 岩盤層に削穿した斜孔に鉄塔主脚材を直接挿
入して定着させるとともに、別途、その周辺の岩盤層を
穿孔して打設した郡ロックアンカーを定着させてタコ足
状に構成された岩盤定着型基礎を施工し、岩盤の地耐力
と支持力を利用することによって、岩盤地帯における鉄
塔基礎工事の簡素化、省力化等の合理化を図るもの。 【構成】 :岩盤層に削穿した斜孔に、支圧板1(定着
材)を持った鉄塔の主脚材2を直接挿入し、モルタルを
充填して岩盤に定着させる。 :主脚材2の周辺の岩盤層を穿孔し、別途、群ロックア
ンカー6をタコ足状に打設(引揚力に応じた本数)し、
岩盤に定着させる。 :主脚材2の周辺の表土を掘削し、主脚材2を抱持する
形の逆T字型基礎9を繞設し、その床板部5を通して郡
ロックアンカー6を定着させる。
(57) [Summary] (Corrected) [Purpose] A group where the main footing material of the steel tower is directly inserted and fixed in the oblique hole drilled in the rock formation, and the surrounding rock formation is punched and placed separately. By constructing an octopus-footed foundation with rock anchors and octopus legs, and by utilizing the ground bearing capacity and bearing capacity of the rock foundation, the steel tower foundation work in the rocky area can be simplified and streamlined. What you plan to do. [Structure]: The main footing material 2 of the steel tower having the pressure bearing plate 1 (fixing material) is directly inserted into the oblique hole drilled in the bedrock layer, and mortar is filled to fix it to the bedrock. : Perforate the rock layer around the main leg material 2 and separately drive the group lock anchors 6 in the shape of octopus (the number according to the lifting force),
Establish in bedrock. : Excavating the topsoil around the main leg material 2 and laying an inverted T-shaped foundation 9 holding the main leg material 2 and fixing the county lock anchor 6 through the floor plate portion 5.

Description

【考案の詳細な説明】 (イ)産業上の利用分野 この考案は、送電線路の鉄塔基礎の構成ならびに施工手段に関するもである。 (ロ)従来の技術 従来技術として、岩盤層に適用しているロックアンカー基礎の一般的な構成は 、第3図のように岩盤上の表土層に設置した逆T字型基礎(9)の床板部(5) に、床板部(5)を通してボーリングマシン等で岩盤層を削孔した孔にPCケー ブルあるいはPC鋼棒等の引張鋼材(7)を挿入し、孔内にセメントモルタルを 充填して岩盤層に群ロックアンカー(6)を定着させるものである。 (ハ)考案が解決しようとする問題点 しかし、従来のロックアンカー基礎の構成は、鉄塔上部構造からの荷重(圧縮 力、引揚力、水平力)を地盤に伝える主脚材(2)と錨材(8)を抱持する逆T 字型基礎(9)と、この基礎の床板部(5)に別途、岩盤層に打設した群ロック アンカー(6)を定着し、群ロックアンカー(6)には引揚力のみを期待し、圧 縮と水平力は逆T字型基礎(9)に期待する構造のため、群ロックアンカー(6 )に対する水平力の影響あるいは水平支持力確保のための床板部(5)の構造拡 大強化等の対策が必要なため実用化には至ってない。 この考案は、第1図のように鉄塔基礎の脚材である主脚材(2)を直接、岩盤 層に削孔した孔に挿入し、脚材として岩盤に定着させ、岩盤そのものを基礎の躯 体とすることにより水平支持力の一層確保と、主脚材(2) 周辺の岩盤層に打 設した群ロックアンカー(6)を主脚材(2)の周りの表土層に繞設した逆T字 型基礎体(9)の床板部(5)に定着結合して群ロックアンカー(6)には引揚 力のみを負担させることによって基礎地盤の支持力の向上を図り、上記の欠点を 補うものである。 (ニ)問題点を解決するための手段 この考案による基礎の構成を第1図により説明すると、鉄塔を建設する傾斜地 に設置したボーリングマシンを使用して、主脚材(2)の据付け方向(転び)と 同一方向に、主脚材(2)の外径より大きい内径の斜孔を表土層から岩盤層の地 盤に亘って所定の深さまで穿孔し、主脚材(2)をその孔に挿入し、所定の位置 に据付ける。 据付け寸法を確認後、主脚材(2)を支持材にて固定後、孔壁とのギャップ( 3)にセメントモルタルを充填して主脚材(2)を岩盤層に定着させる。 主脚材(2)周辺の表土層を掘削し、露出した岩盤上に柱体部(4)が主脚材 (2)を抱持する形の逆T字型基礎(9)を繞設し、この基礎の床板部(5)に 床板部(5)を通して主脚材(2)周辺の岩盤層に別途打設(ボーリングマシン で削孔し、引張鋼材を挿入後、セメントモルタルを充填して固定)した群ロック アンカー(6)を締着金具にて定着する。 床板部(5)に群ロックアンカー(6)を固定した後、掘削した表土を埋戻し 、突き固める。 (ホ)作用 上記の如きロックアンカー基礎を構成することにより主脚材(2)と錨材(8 )を抱持した従来の逆T字型基礎(9)の躯体規模が縮小するので、掘削量と工 事材料が減少し、機械工具も軽量化するので基礎工事の省力化とともにコストダ ウンする。 また、主脚材(2)を直接、岩盤層に挿入固定することによる水平支持力の向 上および主脚材(2)の支圧板(1)と岩盤との付着力、摩擦力による圧縮、引 揚力の向上等、岩盤そのものを基礎体とすることにより地盤の支持力が増大する ため、鉄塔基礎の安定性と信頼性が高まる。 (ヘ)実施例 第2図は本考案によるロックアンカー基礎の構成と施工状況を示す斜視図で、 山岳傾斜地の深部の岩盤層を削穿して打設した四本の主脚材(2)と、この主脚 材(2)を抱持して岩盤上の表土層に繞設した逆T字型基礎(9)の床板部(5 )に、引揚げ支持力を確保するため、その主脚材(2)の周辺に別途、打設した 群ロックアンカー(6)とを定着結合し、岩盤層に根を下ろしたタコ足状のロッ クアンカー基礎を構成した状況を示すもので、打設するロックアンカーの本数、 条長は岩盤の種類、分布、堆積断層、地質構造など強度に関する地質調査結果に よって決定する。 この基礎を施工する場合の必要機械工具としては、小口径(φ300mm〜φ 500mm)のボーリングマシン(総重量約1屯)のほかコンプッレッサー、グ ラウトミキサー、ポンプ等であり所要工具の総重量も3〜4屯と軽量である。 (ト)考案の効果 この考案による基礎構成によって得られる利点と効果を挙げれば次の通りであ る。 1.鉄塔基礎の脚材を直接、不動地盤の岩盤層に挿入固着することによる圧縮 、引揚げ、水平等の地盤支持力の増大。 2.脚材の周辺に併設した群ロックアンカーによる引揚げ支持力の向上。 3.脚材と群ロックアンカーとを結合する逆T字型コンクリート基礎の小型化 。 4.施工機械工具の小型化と、軽量化。 5.掘削量、骨材量、仮設材等の工事量の減少。 6.上記3〜5による工事費(仮設費、運搬費、材料費、労務費等)の軽減。[Detailed description of the device]   (A) Industrial application fields   The present invention also relates to the construction and construction means of the steel tower foundation of the transmission line.   (B) Conventional technology   As a conventional technology, the general structure of the rock anchor foundation applied to the bedrock layer is , Floor plate part (5) of inverted T-shaped foundation (9) installed in topsoil layer on rock as shown in Fig. 3. In addition, through the floor board (5), the PC case is drilled in the rock layer with a boring machine. Bull or PC steel rod or other tensile steel material (7) is inserted and cement mortar is placed in the hole. The group lock anchors (6) are fixed to the bedrock by filling. (C) Problems that the device tries to solve   However, the conventional rock anchor foundation configuration is designed to reduce the load (compression) from the tower superstructure. Inverse T that holds the main leg material (2) and the anchor material (8) that conveys (force, pulling force, horizontal force) to the ground A group-shaped rock (9) and a group rock placed separately on the floor plate (5) of this foundation, which is placed in the bedrock layer. Fix the anchor (6), expect only the lifting force on the group lock anchor (6), Since the contraction and horizontal force are the structures expected of the inverted T-shaped foundation (9), the group lock anchor (6 ) Of the floor plate part (5) to secure the horizontal support force It has not been put to practical use because measures such as major strengthening are necessary.   In this invention, as shown in Fig. 1, the main footing (2) which is the footing of the steel tower foundation is directly attached to the bedrock. Insert it into the hole drilled in the layer and fix it on the bedrock as a foot material. As a body, the horizontal support force is further secured and the rock layer around the main leg (2) is driven. Inverted T-shape with the group lock anchor (6) installed on the topsoil layer around the main leg (2) It is fixedly connected to the floor plate part (5) of the mold base body (9) and pulled up to the group lock anchor (6). By supporting only the force, the bearing capacity of the foundation ground is improved, and the above-mentioned drawbacks are solved. It is a supplement. (D) Means for solving problems   The structure of the foundation according to this invention will be described with reference to FIG. Using the boring machine installed in the In the same direction, make an oblique hole with an inner diameter larger than the outer diameter of the main leg material (2) from the topsoil layer to the rock layer. Perforate to a specified depth across the board, insert the main leg (2) into the hole, To install.   After confirming the installation dimensions, fix the main leg material (2) with the support material, and then remove the gap ( 3) is filled with cement mortar and the main footing (2) is fixed to the bedrock layer.   Excavating the topsoil layer around the main footing (2), the pillar (4) is the main footing on the exposed rock. An inverted T-shaped foundation (9) holding the (2) is laid, and the floor board (5) of the foundation is attached. Separately placed on the rock layer around the main leg (2) through the floor plate (5) (boring machine Group lock after drilling with, inserting tensile steel, and then filling and fixing with cement mortar) Fix the anchor (6) with the fastener.   After fixing the group lock anchor (6) to the floor plate (5), the excavated topsoil is backfilled. , Tamper. (E) Action   By constructing the rock anchor foundation as described above, the main leg material (2) and the anchor material (8 ), The scale of the conventional inverted T-shaped foundation (9) is reduced. Since the number of materials is reduced and the machine tools are also lighter, labor saving of foundation work and cost reduction I will   In addition, the direction of horizontal support force by inserting and fixing the main leg material (2) directly into the bedrock layer Adhesive force between the bearing plate (1) of the upper and main leg members (2) and the bedrock, compression and pulling due to frictional force The ground bearing capacity is increased by using the rock itself as the foundation body, such as improving lift. Therefore, the stability and reliability of the steel tower foundation is improved. (F) Example   FIG. 2 is a perspective view showing the construction and construction of the lock anchor foundation according to the present invention. Four main landing gears (2) that were drilled and placed in the deep rock layer of the mountain slope, and this main landing gear Floor board part (5) of the inverted T-shaped foundation (9) that holds the material (2) and is installed in the topsoil layer on the bedrock. ), In order to secure the lifting capacity, it was separately placed around the main leg (2). An octopus-shaped rock that is anchored to the group rock anchor (6) and rooted in the bedrock layer. It shows the situation where the quarch foundation is constructed, the number of rock anchors to be laid, The strip length is used for the geological survey results regarding strength such as rock type, distribution, sedimentary fault, and geological structure. Therefore, it decides.   As a necessary machine tool when constructing this foundation, a small diameter (φ300 mm ~ φ In addition to a 500 mm boring machine (total weight of about 1 ton), a compressor, The total weight of required tools such as a lout mixer and a pump is as light as 3 to 4 tons. (G) Effect of devising   The advantages and effects obtained by the basic configuration according to this invention are as follows. It   1. Compression by inserting and fixing the footing of the steel tower foundation directly into the rock layer of the immovable ground Increased ground bearing capacity such as, lifting and leveling.   2. The group rock anchors installed around the legs improve the lifting support.   3. Miniaturization of inverted T-shaped concrete foundation that connects leg members and group lock anchors .   4. Miniaturization and weight reduction of construction machine tools.   5. Decrease in the amount of excavation, aggregate, temporary materials, etc.   6. Reduction of construction costs (temporary installation costs, transportation costs, material costs, labor costs, etc.) by the above 3-5.

【図面の簡単な説明】 第1図は、本考案による岩盤定着型タコ足アンカー基礎
の一脚施工についての断面図、第2図は、四脚施工につ
いての斜視図、第3図は、従来のロックアンカー基礎の
一脚施工についての断面図である。 1−−−−−−支圧板 2−−−−−主脚材 3−−−−−ギャップ 4−−−−−柱体部 5−−−−−床板部 6−−−群ロックアンカー 7−−−−−引張鋼材 8−−−−−錨材 9−−逆T字型基礎
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a monolithic construction of a rock anchoring octopus foot anchor foundation according to the present invention, FIG. 2 is a perspective view of a tetrapod construction, and FIG. It is sectional drawing about the monopod construction of the lock anchor foundation. 1 -------- Supporting plate 2 ---- Main leg material 3 ---- Gap 4 ---- Column body 5 ---- Floor plate 6 --- Group lock anchor 7 ------- Tensile steel material 8 ----- Anchor material 9 --- Inverted T-shaped foundation

Claims (1)

【実用新案登録請求の範囲】 1 岩盤層を削穿した斜孔に鉄塔基礎材用コンクリート
充填鋼管で支圧板(1)を持った主脚材(2)を挿入
し、孔壁とのギャップ(3)にセメントモルタルを充填
して岩盤に主脚材(2)を定着する。 2 表土層を掘削し、鉄筋コンクリート基礎の柱体部
(4)が主脚材(2)を抱持する形の逆T字型基礎
(9)を岩盤上に繞設し、その床板部(5)に床板部
(5)を通して別途、主脚材(2)周辺の岩盤層を穿孔
して打設した群ロックアンカー(6)を定着する。 上記の如くタコ足状に構成される岩盤定着型タコ足アン
カー基礎。
[Claims for utility model registration] 1 Insert a main footing (2) with a bearing plate (1) with a concrete-filled steel pipe for a steel tower foundation into a diagonal hole drilled in a bedrock layer, and insert a gap ( 3) is filled with cement mortar, and the main leg material (2) is fixed on the bedrock. 2 Excavate the topsoil layer, lay an inverted T-shaped foundation (9) on the bedrock in which the pillar body (4) of the reinforced concrete foundation holds the main leg material (2), and the floorboard (5) ), The group rock anchor (6) which is formed by perforating the rock layer around the main leg material (2) and placing it separately is fixed through the floor plate part (5). A rock anchored octopus foot anchor foundation that is configured like an octopus foot as described above.
JP9859191U 1991-09-23 1991-09-23 Rock anchored octopus foot anchor foundation Expired - Lifetime JP2559394Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9859191U JP2559394Y2 (en) 1991-09-23 1991-09-23 Rock anchored octopus foot anchor foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9859191U JP2559394Y2 (en) 1991-09-23 1991-09-23 Rock anchored octopus foot anchor foundation

Publications (2)

Publication Number Publication Date
JPH0676426U true JPH0676426U (en) 1994-10-28
JP2559394Y2 JP2559394Y2 (en) 1998-01-14

Family

ID=14223888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9859191U Expired - Lifetime JP2559394Y2 (en) 1991-09-23 1991-09-23 Rock anchored octopus foot anchor foundation

Country Status (1)

Country Link
JP (1) JP2559394Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006030894A1 (en) * 2004-09-17 2006-03-23 The Tokyo Electric Power Company, Incorporated Foundation structure of tower
KR101019735B1 (en) * 2009-12-29 2011-03-08 (주)한국에스코 The overthrow preventive construction of high pressure electricity steel tower
JP2011528072A (en) * 2008-07-15 2011-11-10 シーメンス アクチエンゲゼルシヤフト Method for assembling tower and tower

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104453336B (en) * 2014-11-04 2019-12-17 国家电网公司 Base structure of high-pressure steel pipe pole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006030894A1 (en) * 2004-09-17 2006-03-23 The Tokyo Electric Power Company, Incorporated Foundation structure of tower
JP2011528072A (en) * 2008-07-15 2011-11-10 シーメンス アクチエンゲゼルシヤフト Method for assembling tower and tower
KR101019735B1 (en) * 2009-12-29 2011-03-08 (주)한국에스코 The overthrow preventive construction of high pressure electricity steel tower

Also Published As

Publication number Publication date
JP2559394Y2 (en) 1998-01-14

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