EP0273541B1 - A structure and method for stabilising sloping ground - Google Patents

A structure and method for stabilising sloping ground Download PDF

Info

Publication number
EP0273541B1
EP0273541B1 EP87302334A EP87302334A EP0273541B1 EP 0273541 B1 EP0273541 B1 EP 0273541B1 EP 87302334 A EP87302334 A EP 87302334A EP 87302334 A EP87302334 A EP 87302334A EP 0273541 B1 EP0273541 B1 EP 0273541B1
Authority
EP
European Patent Office
Prior art keywords
slope
side plates
pair
precast concrete
cement
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
Application number
EP87302334A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0273541A2 (en
EP0273541A3 (en
Inventor
Kunimitsu Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kensetsukiso Engineering Co Ltd
Original Assignee
Kensetsukiso Engineering Co Ltd
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 Kensetsukiso Engineering Co Ltd filed Critical Kensetsukiso Engineering Co Ltd
Priority to AT87302334T priority Critical patent/ATE61433T1/de
Publication of EP0273541A2 publication Critical patent/EP0273541A2/en
Publication of EP0273541A3 publication Critical patent/EP0273541A3/en
Application granted granted Critical
Publication of EP0273541B1 publication Critical patent/EP0273541B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines

Definitions

  • This invention relates to a structure for stabilising sloping ground. More specifically, the present invention relates to a structure constructed using precast concrete members for stabilising sloping ground.
  • a problem with this known process is that very large concrete blocks can not readily be brought to the slope, and that precast concrete blocks are used, so that the close contact between the concrete blocks and the natural ground surface is unsatisfactory.
  • frames are arranged in a crossing fashion on sloping natural ground, and a cement-containing hardenable material is charged into the frames to construct slope frames, thereby preventing the fall or collapse of the natural ground.
  • JP-A-55 92426 the on-site construction of the frames on the entire slope is difficult.
  • the hardenable material is not charged until all of the frames are constructed, so that the construction requires a long time. Further, a surface treatment of the charged cement-containing hardenable material is necessary, and this can be cumbersome and inconvenient. Further, the slope frames are continuous over the entire slope, and hence complicated structural calculations are necessary.
  • JP-A-57255 also discloses reinforcing work for natural ground which is formed by casting a latticework between iron plates. Reinforcing bars are provided between the plates, but the disadvantages given above are still applicable.
  • a mould structure for stabilising a slope which mould structure comprises four pairs of precast concrete side plates arranged in the form of a cross, the side plates of each pair being substantially parallel, characterized in that the height of the side plates of each pair reduces gradually from the centre of the cross towards the free end of the said pair, each said pair including an end plate provided at the free end of said pair and reinforcement means under tension extending between at least one of the pairs of opposed end plates.
  • Cement-containing hardenable material can then be charged into a space between the pair of side plates, to create a structure which may be secured to the slant natural ground with an anchor.
  • a plurality of the structures as above are arranged on the slant natural ground to prevent the fall or collapse of the natural ground.
  • the present invention can solve the above problems in the prior art and has the following pronounced effects.
  • the height of the structure is high in a central portion to provide for increased mechanical strength of a central portion of the structure which experiences a high bending moment.
  • the precast concrete plates may be assembled on- or off-site and then brought to the slope. Therefore, the workability is improved. Further, the structure can be assembled on the slope, so that it is possible to further facilitate the operation.
  • Figs. 1 to 5 illustrate an embodiment of the present invention, and in which:
  • Fig. 1 is a perspective view showing precast concrete members in an assembled state
  • Fig. 2 is a plan view of the same
  • Fig. 3 is a sectional view taken along line III-III in Fig. 2;
  • Fig. 4 is a plan view showing an arrangement of structure on a slope
  • Fig. 5 is a sectional view taken along line V-V in Fig. 4.
  • reference numeral 1 designates precast concrete base members having the general shape of a cube.
  • the four corners of the base member 1 at the outer periphery are provided with respective engagement notches 2.
  • Reference numeral 3 designates side plates of precast concrete. The height of these side plates reduces from one end toward their other end.
  • Reference numeral 4 designates precast concrete end plates. The opposite side edges of the end plate are formed with engagement notches 5.
  • the end plate 4 has four PC steel material insertion holes 6.
  • the base number 1, side plates 3 and end plates 4 are assembled in a factory or on-site. First, two base members 1 are disposed at a suitable vertical distance from each other, and two side plates 3 of each of four pairs are erected such that they are parallel and with their taller ends on the side of the base members 1.
  • each side plate 3 is coupled at its upper and lower corners to the engagement notches 2 of the base member 1.
  • the four pairs of side plates project in cruciform fashion from the base members 1.
  • Each end plate 4 is coupled to the free ends of the pair of side plates 3 by means of the engagement notches 5 of the end plate 4.
  • Lengths of PC steel material 7 are stretched between the opposed end plates 4, with their ends inserted through the holes 6. An end of the length of PC steel material 7 is secured to the end plate by means of a wedge or a nut 8. Before securing the lengths of PC steel material 7, prestress is given to them to make the base members 1, side plates 3 and ends plates 4 integral.
  • PC steel material 7 there may be used PC steel wires, PC (plain carbon) stranded steel wires and PC steel rods or bars.
  • shuttering 13 is disposed vertically at the centre of the base members 1, and an upper portion of an anchor 9 previously embedded in the sloping natural ground is passed through the shuttering 13. Further, a shuttering board 10, e.g. of plywood, is secured by means of bolts 11 to the tops of each pair of side plates 3.
  • a cement-containing hardenable material 12 e.g. concrete or mortar, is charged into the spaces defined by the side plates 3 and end plates 4.
  • the shuttering boards 10 are removed, and the structure A is secured on the slant natural ground by giving the anchor 9 prestress.
  • the anchor 9 there may be used a lock bolt or the like.
  • the previously embedded anchor 9 may be prestressed for securement because the prestressing of plates produces a considerable effect upon the structure.
  • the cement-containing hardenable material may be subsequently charged into the space between the plates. In this case, the stability of the concrete blocks being constructed is improved.
  • Figs. 4 and 5 show an arrangement of a plurality of structures A arranged in a crossing fashion and at a suitable interval. In this case, the ends of the cross-like structures A seem to be continuous.
  • the present invention relates to a structure for stabilising a slope, and that the structure according to the present invention can be provided on a natural slope surface or upon a pre-arranged slope, for example in any civil engineering field. Further, the construction according to the present invention is constructed using factory-made precast concrete members and subsequently using a cement-containing hardenable material, so that it can be practised in the field of producing concrete material.
  • the present invention provides a method stabilising a slope, which method comprises the step of:
  • PC steel wires are used as said PC material, or PC steel bars are used as said PC steel material.
  • cement milk, mortar, or concrete is used as said cement-containing hardenable material.
  • a lock bolt or a slant natural ground anchor is used as said anchor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Polymerisation Methods In General (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Revetment (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP87302334A 1986-12-30 1987-03-18 A structure and method for stabilising sloping ground Expired EP0273541B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87302334T ATE61433T1 (de) 1986-12-30 1987-03-18 Konstruktion und methode zur stabilisierung einer boeschung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP199777/86 1986-12-30
JP1986199777U JPH0414507Y2 (enrdf_load_stackoverflow) 1986-12-30 1986-12-30

Publications (3)

Publication Number Publication Date
EP0273541A2 EP0273541A2 (en) 1988-07-06
EP0273541A3 EP0273541A3 (en) 1988-12-07
EP0273541B1 true EP0273541B1 (en) 1991-03-06

Family

ID=16413442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87302334A Expired EP0273541B1 (en) 1986-12-30 1987-03-18 A structure and method for stabilising sloping ground

Country Status (5)

Country Link
EP (1) EP0273541B1 (enrdf_load_stackoverflow)
JP (1) JPH0414507Y2 (enrdf_load_stackoverflow)
AT (1) ATE61433T1 (enrdf_load_stackoverflow)
DE (1) DE3768458D1 (enrdf_load_stackoverflow)
ES (1) ES2021033B3 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2130995C1 (ru) * 1997-12-19 1999-05-27 Колесников Владимир Филиппович Защитное покрытие для укрепления боковых откосов дорог, склонов и береговых насыпей

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3910176A1 (de) * 1989-03-29 1990-10-04 Dyckerhoff & Widmann Ag Sicherung und abdichtung von steilen haengen, insbesondere von muellhalden und dgl.
ES2114372B1 (es) * 1994-05-04 1999-01-01 Antonio Casado Y Cia S A A C Y Sistema de revestimiento y estabilizacion de riberas y taludes.
DE19631274A1 (de) * 1996-08-02 1998-02-05 Ross Kurt G Verfahren zur Sicherung von Geländesprüngen und Bausatz zur Durchführung des Verfahrens
RU2320802C2 (ru) * 2006-03-22 2008-03-27 Владимир Абрамович Зельманович Структурообразующий армирующий элемент

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380253A (en) * 1966-02-21 1968-04-30 Vita Lawrence Apparatus for controlling erosion
JPS5055103A (enrdf_load_stackoverflow) * 1973-09-12 1975-05-15
JPS51133902A (en) * 1975-05-14 1976-11-20 Nobukuro Nagaoka Method of reinforcing bedrock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2130995C1 (ru) * 1997-12-19 1999-05-27 Колесников Владимир Филиппович Защитное покрытие для укрепления боковых откосов дорог, склонов и береговых насыпей

Also Published As

Publication number Publication date
ATE61433T1 (de) 1991-03-15
JPS63108444U (enrdf_load_stackoverflow) 1988-07-13
DE3768458D1 (de) 1991-04-11
ES2021033B3 (es) 1991-10-16
EP0273541A2 (en) 1988-07-06
JPH0414507Y2 (enrdf_load_stackoverflow) 1992-03-31
EP0273541A3 (en) 1988-12-07

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