EP0300159B1 - Verfahren und Vorrichtung zum Auskleiden eines Tunnels mit Ortbeton - Google Patents

Verfahren und Vorrichtung zum Auskleiden eines Tunnels mit Ortbeton Download PDF

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Publication number
EP0300159B1
EP0300159B1 EP88108179A EP88108179A EP0300159B1 EP 0300159 B1 EP0300159 B1 EP 0300159B1 EP 88108179 A EP88108179 A EP 88108179A EP 88108179 A EP88108179 A EP 88108179A EP 0300159 B1 EP0300159 B1 EP 0300159B1
Authority
EP
European Patent Office
Prior art keywords
shuttering
situ concrete
cast
jacket
shield
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
Application number
EP88108179A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0300159A1 (de
Inventor
Volker Hentschel
Olaf Mahmens
Clemens Versteegen
Siegmund Dr. Babendererde
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.)
Hochtief AG
Original Assignee
Hochtief AG
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 Hochtief AG filed Critical Hochtief AG
Publication of EP0300159A1 publication Critical patent/EP0300159A1/de
Application granted granted Critical
Publication of EP0300159B1 publication Critical patent/EP0300159B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering

Definitions

  • the invention relates to a method for lining a tunnel with in-situ concrete behind a tunneling machine having a trailing shield jacket, the in-situ concrete through a front formwork which is longitudinally movable relative to the shield jacket and to the inner formwork and which is adjacent to the inner jacket surface of the shield jacket and to the inner formwork while simultaneously advancing the Forehead formwork is pressed against the inner formwork between the mountains and the inner formwork, the forehead formwork being acted upon by the pressure of the in-situ concrete supplied in a controlled manner depending on the relative position of the forehead formwork to the shield casing and by acting on a hydraulic spring arrangement with a compensation force corresponding to that between the forehead formwork and the Shield jacket and the internal formwork of the frictional forces.
  • the invention relates to a device for carrying out such a method, in which the front formwork has an outer jacket seal that is in contact with the inner jacket surface of the shield jacket and an inner jacket seal that is in contact with the outer jacket surface of the inner boarding, is connected to an in-situ concrete pump via a movable in-situ concrete delivery line and via the adjustable, the frictional force compensating hydraulic spring arrangement is coupled to the shield casing and the face formwork and the shield casing is interposed with a displacement measuring device which is assigned as an input element to a control device having the in-situ concrete pump as an actuator.
  • the control device merely serves to hold the front formwork in a predetermined area of the shield casing and consequently has a cylinder piston arrangement, via which the shield casing is coupled to a propulsion unit of the tunneling machine, and the in-situ concrete pump as actuators.
  • these measures do not meet the requirements.
  • Experience with jacking shields in the diameter range of 6 to 7 m has shown that the required compensation forces can fluctuate between 400 and 1400 kN.
  • the invention has for its object to reduce the amount of harmful pressure fluctuations when feeding the in-situ concrete in the context of the measures described above.
  • this object is achieved according to the invention in that the frictional forces between concreting sections of a predetermined length by pulling the front formwork over the stationary shield casing and the inner formwork by means of the spring arrangement with interrupted in-situ concrete supply by a predetermined distance in which the front formwork does not differ from the last supplied in-situ concrete dissolves, as well as being determined by measuring the forces required for this, and that during the subsequent concreting, the face formwork is additionally subjected to a constant force corresponding to the forces determined in the direction of advance and the amount of in-situ concrete supplied increases if the front formwork remains behind the shield jacket and if the front formwork leads ahead the shield mantle is lowered.
  • the device-based solution is characterized in that the hydraulic spring arrangement is also connected as an actuator to the control device and consists of parallel hydraulic cylinder piston arrangements, the cylinder chambers facing away from the front formwork are connected via a hydraulic line to a gas pressure accumulator arrangement and the cylinder chambers facing the front formwork are connected via a hydraulic line to a proportional pressure valve arrangement are, and that the cylinder chambers can be acted upon by the proportional pressure valve arrangement until it moves forward by a predetermined distance when the shield casing and the in-situ concrete pump are at a standstill, and the corresponding pressure ratios can be stored by the control device and can be adjusted via the proportional pressure valve arrangement when the in-situ concrete is supplied.
  • the invention is based on experiences gained in the course of lining tunnels with in-situ concrete.
  • the variable frictional forces acting on the movable face formwork cannot be determined practically during operation.
  • To ensure pressure-stable concrete paving with only slight fluctuations in the concrete pressure it is therefore necessary to record the frictional forces at regular intervals and to change a supporting force that acts continuously when feeding the in-situ concrete so that the change in supporting force corresponds to the amount of the frictional force, but in the opposite direction in the direction of action is directed.
  • This adjustment of the supporting force causes the front formwork to be moved forward in the driving direction solely by the concrete compressive force of the in-situ concrete that exceeds the supporting force, and any frictional forces that occur are eliminated in their effect by the compensation forces additionally introduced into the system.
  • the single figure shows a device for lining a tunnel with in-situ concrete behind a tunnel boring machine with a trailing shield jacket 1.
  • a front formwork 2 is used, which has an outer jacket seal 3 lying against the inner surface of the shield jacket 1 and an inner jacket lying against the outer jacket surface of an inner formwork 4 Has jacket seal 5.
  • the front formwork 2 is coupled to the shield casing 1 via an adjustable hydraulic spring arrangement 8 that compensates for the frictional forces.
  • the face formwork 2 and the shield casing 1 are assigned a displacement measuring device 9 as an input element of an electrical control device 10.
  • the hydraulic spring arrangement 8 is connected as an actuator to the control device 10 and the control device 10 is set up for storing the setting of the hydraulic spring arrangement 8 when determining the frictional forces; this will be explained in more detail below.
  • the hydraulic spring arrangement 8 consists of a plurality of parallel hydraulic cylinder piston arrangements 11, only one of which is shown.
  • the cylinder chamber 12 facing away from the front formwork 2 is connected via a hydraulic line 13 to a gas pressure accumulator arrangement 14. This is designed so that practically the same pressure is always exerted on the piston of the hydraulic cylinder piston assembly 11 regardless of its position.
  • the cylinder chamber 15 of the hydraulic cylinder piston arrangement 11 facing the face formwork 2 is connected via a hydraulic line 16 to a proportional pressure valve arrangement 17 with a hydraulic pump 18.
  • the in-situ concrete pump 7 is connected as a further actuator to the control device 10 in order to control the concrete volume flow as a function of the path.
  • the concrete volume flow to be introduced through the front formwork 2 is reduced, when the Xm direction is deflected in the -x direction, the concrete volume flow is increased, and when the front formwork 2 is not deflected, the supplied concrete volume flow rate is reduced kept constant or not changed.
  • the working point can be provided with a path tolerance.
  • the unpressurized cylinder chambers 15 of the hydraulic cylinder piston arrangement 11 are continuously pressurized with increasing pressure in that hydraulic fluid from the hydraulic pump 18 is pumped into the cylinder chamber 15.
  • the concrete flow control and the concrete supply are interrupted.
  • the hydraulic quantity fed in is dimensioned such that, after a certain pressure is exceeded, the front formwork 2 is pulled off at a low speed in the + x direction.
  • the displacement measuring device 9 registers a change in displacement, from which the electronic control device 10 determines a change in speed of the front formwork 2. This change in speed is the signal for the end of the hydraulic feed.
  • the resulting pressure is stored in the control device and optionally provided with a correction factor to be determined by calibration.
  • the proportional pressure valve arrangement 17 is brought to a setting corresponding to the last measured and corrected value and the cylinder chamber 15 of the hydraulic cylinder piston arrangement 11 is pressurized.
  • F compensation is chosen so that a slight under compensation of F friction is achieved. This means that the concrete pressure is set too high. If the concrete pressure is now increased by a certain value dF b , the face formwork 2 starts to move in the direction of the concrete pressure force acting on it, since an imbalance of the forces arises.
  • the compensation force remains constant until a certain distance, e.g. B. 20 cm, is concreted.
  • the control device 10 is equipped with all path information required for determining the concreting path.
  • the compensation operation is terminated and a new friction force determination is carried out automatically.
  • a higher reserve of the concrete pressure than would be necessary according to the static framework conditions serves as a safety reserve as well as the low undercompensation of the friction force, as a result of which an increase in the concrete pressure is necessary.
  • the deflection of the face formwork 2 leads to the onset of the concrete volume flow control.
  • the concrete volume flow is reduced.
  • the working point X m can be provided with a tolerance field x 1> x m > x o . If the face formwork is within this distance, the concrete volume flow remains constant.
  • the displacement measuring device 9 registers a deflection in the -x direction.
  • the concrete volume flow is increased.
  • the increased concrete volume flow leads to an increase in pressure in the annular space and finally to a movement of the front formwork 2 in the direction + x at a speed which is greater than that of the shield casing 1.
  • the frictional force acting on the front formwork 2 between the shield casing 1 and the front formwork 2 changes direction and possibly their amount. In order to take into account the resulting change in the resulting frictional force, the compensating force is reduced until the relative speed between the front formwork 2 and the shield jacket 1 is no longer negative.
  • the concrete volume flow is increased.
  • the increased concrete volume flow leads to an increase in pressure in the formwork and finally to a movement of the front formwork 2 in the direction + x at a speed which is greater than that of the shield casing 1.
  • Failure to achieve the relative movement between the shield casing 1 and the front formwork 2 does not lead to a substantial incorrect compensation as long as the direction of the frictional forces between the inner formwork 4 and the front formwork 2 and the shield casing 1 and the front formwork 2 have the same direction. If the direction of the frictional force between the shield casing 1 and the front formwork 2 is reversed, the total frictional force is reduced and, in extreme cases, can reverse its direction.
  • control device 10 provides that the operator is made aware of the case described; the operator can then take appropriate steps to "troubleshoot" if necessary. If the front formwork 2 stops, the control device 10 is designed such that that the operation is interrupted immediately with a friction compensation, ie the cylinder chamber 15 of the hydraulic cylinder piston assembly 11 is vented. It is possible to restart the compensation operation after the fault has been rectified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP88108179A 1987-07-17 1988-05-21 Verfahren und Vorrichtung zum Auskleiden eines Tunnels mit Ortbeton Expired - Lifetime EP0300159B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873723625 DE3723625A1 (de) 1987-07-17 1987-07-17 Verfahren und vorrichtung zum auskleiden eines tunnels mit ortbeton
DE3723625 1987-07-17

Publications (2)

Publication Number Publication Date
EP0300159A1 EP0300159A1 (de) 1989-01-25
EP0300159B1 true EP0300159B1 (de) 1991-09-25

Family

ID=6331754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108179A Expired - Lifetime EP0300159B1 (de) 1987-07-17 1988-05-21 Verfahren und Vorrichtung zum Auskleiden eines Tunnels mit Ortbeton

Country Status (6)

Country Link
US (1) US4854776A (enrdf_load_stackoverflow)
EP (1) EP0300159B1 (enrdf_load_stackoverflow)
JP (1) JPH0776520B2 (enrdf_load_stackoverflow)
KR (1) KR970007348B1 (enrdf_load_stackoverflow)
DE (1) DE3723625A1 (enrdf_load_stackoverflow)
DK (1) DK397588A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03260286A (ja) * 1990-03-09 1991-11-20 Komatsu Ltd シールド工法の地山崩壊探査方法および装置
CN1053030C (zh) * 1995-10-05 2000-05-31 许宝根 组合式滑动护板自进盾构体

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433656A (en) * 1977-08-22 1979-03-12 Hitachi Ltd Correction unit for lead bendign of electronic conponent
DE2913091A1 (de) * 1979-04-02 1980-10-16 Gewerk Eisenhuette Westfalia Verfahren und vorrichtung zum auffahren und ausbauen mit ortbeton von tunnels, unterirdischen strecken o.dgl.
DE2932430C2 (de) * 1979-08-10 1985-01-10 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Verfahren zum Einbringen eines Tunnelausbaus aus Beton
DE3025922A1 (de) * 1980-07-09 1982-01-28 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Einrichtung zur steuerung der hydraulischen stirnschalungszylinder beim einbringen einer ortbetonauskleidung in unterirdischen bauwerken, wie vor allem tunnels, stollen, untertagestrecken u.dgl.
DE3127311C1 (de) * 1981-07-10 1983-02-03 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen "Vorrichtung zum Vortrieb eines Tunnels"
JPS60126495A (ja) * 1983-12-13 1985-07-05 株式会社間組 シ−ルド掘進機の制御装置と制御方法
DE3406980C1 (de) * 1984-02-25 1985-04-04 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Verfahren und Vorrichtung zum fortlaufenden Auskleiden eines Tunnels mit Ortbeton
DE3529998A1 (de) * 1985-08-22 1987-02-26 Hochtief Ag Hoch Tiefbauten Verfahren und vorrichtung zum fortlaufenden auskleiden eines tunnels mit extrudierbeton
DE3533425C1 (de) * 1985-09-19 1986-10-30 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Stuetzfluessigkeitsdruckregelung fuer eine Schildvortriebsmaschine
JPS6260687U (enrdf_load_stackoverflow) * 1985-10-04 1987-04-15
US4798267A (en) * 1987-01-20 1989-01-17 Delaware Capital Formation, Inc. Elevator system having an improved selector
US4769192A (en) * 1987-03-27 1988-09-06 Blaw Knox Corporation Pulsating slip form apparatus and method

Also Published As

Publication number Publication date
DK397588A (da) 1989-01-18
KR890002521A (ko) 1989-04-10
EP0300159A1 (de) 1989-01-25
KR970007348B1 (ko) 1997-05-07
US4854776A (en) 1989-08-08
JPH0776520B2 (ja) 1995-08-16
DK397588D0 (da) 1988-07-15
DE3723625A1 (de) 1989-02-23
DE3723625C2 (enrdf_load_stackoverflow) 1990-04-19
JPH0227098A (ja) 1990-01-29

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