EP0034297B1 - Supporting unit for trenches - Google Patents

Supporting unit for trenches Download PDF

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Publication number
EP0034297B1
EP0034297B1 EP81100757A EP81100757A EP0034297B1 EP 0034297 B1 EP0034297 B1 EP 0034297B1 EP 81100757 A EP81100757 A EP 81100757A EP 81100757 A EP81100757 A EP 81100757A EP 0034297 B1 EP0034297 B1 EP 0034297B1
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EP
European Patent Office
Prior art keywords
pile driving
locking
deal
girders
support frame
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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
EP81100757A
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German (de)
French (fr)
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EP0034297A1 (en
Inventor
Josef Krings
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Individual
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Individual
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Publication date
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Priority to AT81100757T priority Critical patent/ATE9604T1/en
Publication of EP0034297A1 publication Critical patent/EP0034297A1/en
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Publication of EP0034297B1 publication Critical patent/EP0034297B1/en
Expired legal-status Critical Current

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    • 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
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations

Definitions

  • the invention relates to a shoring unit for trenches consisting, on the one hand, of at least one horizontal, transversely adjustable supporting frame made of horizontal longitudinal spars and horizontal struts, with guide heads attached to the longitudinal spars and, on the other hand, of a multiplicity of ramming planks which are guided perpendicularly to and on the longitudinal spars, which have on their inside a guide profile for the guide heads attached to the support frame and locking devices are provided for temporarily connecting the support frame to the ramming boards.
  • the locking device consists of holes arranged on the support plates for the guide heads and on the guide profiles, through which, if they are aligned with one another, locking bolts can be inserted parallel to the longitudinal spars.
  • the application of this device is difficult in practice because it is difficult to align the holes precisely with one another, especially since the holes on the guide profiles cannot be seen.
  • the invention has for its object to provide a shoring unit of the type mentioned, which without impairing the strength of the ramming boards and their sealing function allows a temporary fixed connection of the support frame and all ramming boards to use this device as a whole in a excavated trench piece or from this pull out.
  • the design should be as robust, practical and inexpensive as possible.
  • the object is achieved according to the invention in the characterizing features of the claim. They enable the ramming boards to be coupled to the supporting frame with adjustable tolerances in a simple and quick manner.
  • the shelves provide the ramming boards with additional strength.
  • the locking devices are freely accessible from the inside of the device and can also be optionally released or closed.
  • the shoring unit consists of at least one rigid support frame 1, which in turn consists of two longitudinal spars 2 and longitudinally adjustable spreaders 3 which engage at their ends.
  • the longitudinal spars 2 consist of section steel beams.
  • Guide devices 4 are arranged at regular intervals on the longitudinal spars. These consist of gusset plates 5 welded on above and below the longitudinal spar 2 with an outwardly pointing web 6 to which a perpendicular, outwardly open U-profile 7 is welded.
  • support rollers 8 are mounted around horizontal axes.
  • disc-shaped rollers 9 are mounted in recesses of the web, which are each rotatable about horizontal axes 8 perpendicular to the axes of the rollers.
  • the U-profile 7 and the rollers 8, 9 each form a guide head 10.
  • a number of ramming boards 11 are also assigned to the supporting frame 1, which have an undulating profile which is designed such that the side edges of adjacent ramming boards 11 overlap.
  • a C-profile support 12 is welded into an outwardly projecting bend of each ramming board, in which the associated guide head 10 can be positively received in such a way that the ramming board 11 is guided perpendicular to the supporting frame 1.
  • a number of stops 15 are welded at regular intervals one above the other, which are formed from horizontal shelves.
  • locking devices 16 which are shown in FIGS. 3 and 4 on an enlarged scale, are arranged on the longitudinal spars 2 of the support frame 1 of each ramming board.
  • Each locking device 16 consists of a base plate 17 fastened on the respective longitudinal spar 2, a bearing block 18 mounted thereon, and axially in the bearing block 18 transversely to the longitudinal direction of the longitudinal spar 2 Removable locking bolt 19 and stops 20, 21.
  • the stop 20 is arranged on the side of the locking bolt 19 and serves as a system for a locking lever 22 attached to it.
  • This locking lever 22 is attached radially to the locking bolt 19.
  • the stop 21 is arranged axially to the locking bolt 19 and limits its stroke to the rear.
  • the front part 23 of the locking bolt 19 protrudes into the space of the hollow profile 14 in the locked position (FIGS. 3 and 4) and would abut one of the shelves 15 delimiting it at the top and bottom if there was a relative movement between the support frame 1 and the ramming board 11.
  • the locking is released by a simple quarter-turn of the locking bolt 19 and the locking lever 22 connected to it, as well as pulling back the locking bolt 19 against the stop 21.
  • the ramming board 11 is then free to move relative to the supporting frame.
  • the entire shoring unit can be pre-mined outside the trench piece to be installed and then lowered into the more or less deeply dug trench using a suitable lifting device. There, the ramming boards can be driven deeper into the ground after they have been unlocked. By pre-assembling the shoring unit, considerable threading and re-adjustment work is avoided and a simultaneous preliminary protection of the interior of the trench is produced.
  • the support frame is locked again with the ramming boards and can then be picked up as a unit by the lifting gear.

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  • 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)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Revetment (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Finishing Walls (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Automatic Assembly (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Description

Die Erfindung betrifft eine Verbaueinheit für Gräben bestehend einerseits aus mindestens einem waagrechten, in Querrichtung verstellbaren Tragrahmen aus waagerechten Längsholmen und waagerechten Spreizen, mit an den Längsholmen befestigten Führungsköpfen und andererseits aus einer Vielzahl von senkrecht zu und an den Längsholmen geführten, im Querschnitt wellenförmigen Rammdielen, die auf ihrer Innenseite ein Führungsprofil für die am Tragrahmen befestigten Führungsköpfe aufweisen und wobei Verriegelungseinrichtungen zur zeitweiligen Verbindung des Tragrahmens mit den Rammdielen vorgesehen sind.The invention relates to a shoring unit for trenches consisting, on the one hand, of at least one horizontal, transversely adjustable supporting frame made of horizontal longitudinal spars and horizontal struts, with guide heads attached to the longitudinal spars and, on the other hand, of a multiplicity of ramming planks which are guided perpendicularly to and on the longitudinal spars, which have on their inside a guide profile for the guide heads attached to the support frame and locking devices are provided for temporarily connecting the support frame to the ramming boards.

Bei einer solchen, aus der DE-A 27 20 719 bekannten Verbaueinheit ist es sehr zeitraubend und mühsam, wenn die Einzelprofile im zu schützenden Graben zusammengesetzt werden müssen. Es ist daher erwünscht, die Tragrahmen und Rammdielen bereits vor ihrem Einbau zusammenzusetzen und dieses Gebilde gewissermaßen als Verbaukorb, in den abzusichernden Graben abzusenken. In gleicher Weise ist es erwünscht, nach Beendigung der Verbauarbeiten die Verbaueinheit möglichst als Ganzes aus dem Grabenstück herauszuheben.In such a shoring unit known from DE-A 27 20 719, it is very time-consuming and tedious if the individual profiles have to be assembled in the trench to be protected. It is therefore desirable to assemble the supporting frames and ramming boards before they are installed and to lower this structure as a shoring, as it were, into the trench to be secured. In the same way, it is desirable to lift the shoring unit as a whole out of the trench piece after completion of the shoring work.

Bei der bekannten Vorrichtung besteht die Verriegelungseinrichtung aus an den Stützblechen für die Führungsköpfe und an den Führungsprofilen angeordneten Löchern, durch die, wenn sie miteinadner fluchten, Verriegelungsbolzen parallel zu den Längsholmen gesteckt werden können. Die Anwendung dieser Einrichtung ist in der Praxis schwierig, weil es schwer ist, die Löcher genau miteinander in Flucht zu bringen, zumal man die Löcher an den Führungsprofilen nicht einsehen kann.In the known device, the locking device consists of holes arranged on the support plates for the guide heads and on the guide profiles, through which, if they are aligned with one another, locking bolts can be inserted parallel to the longitudinal spars. The application of this device is difficult in practice because it is difficult to align the holes precisely with one another, especially since the holes on the guide profiles cannot be seen.

Aus der GB-A 1416 995 ist es andererseits bei einer Vorrichtung zum Einrammen von Rammdielen Längslöcher in den Rammdielen vorzusehen, auf diese ein leiterartiges Gehäuse aufzuschweißen und durch diese Öffnungen Verriegelungsbolzen zu stecken, die beiderseits auf Längsholmen abgestützt sind, die die Vorder- und Rückseite der Rammdielen umfassen.From GB-A 1416 995, on the other hand, in a device for ramming ramming planks, longitudinal holes are to be provided in the ramming planks, a ladder-like housing is welded onto them, and locking bolts are inserted through these openings, which are supported on both sides on longitudinal spars, which are the front and rear of the pile boards.

Der Erfindung liegt die Aufgabe zugrunde, eine Verbaueinheit der eingangs genannten Art zu schaffen, die ohne Beeinträchtigung der Festigkeit der Rammdielen und deren Dichtungsfunktion eine zeitweilige feste Verbindung von Tragrahmen und allen Rammdielen ermöglicht, um diese Vorrichtung als Ganzes in ein ausgehobenes Grabenstück einzusetzen oder aus diesem herauszuziehen. Dabei soll die Ausführung so robust, praxisnah und preiswert wie möglich gestaltet werden.The invention has for its object to provide a shoring unit of the type mentioned, which without impairing the strength of the ramming boards and their sealing function allows a temporary fixed connection of the support frame and all ramming boards to use this device as a whole in a excavated trench piece or from this pull out. The design should be as robust, practical and inexpensive as possible.

Die Lösung der Aufgabe besteht erfindungsgemäß in den kennzeichnenden Merkmalen des Anspruches. Sie ermöglichen auf einfache und rasche Weuse eine Koppelung der Rammdielen mit dem Tragrahmen mit vertetbaren Toleranzen. Die Fachböden vermittel dabei den Rammdielen eine zusätzliche Festigkeit. Die Verriegelungseinrichtungen sind vom Innern der Vorrichtung frei zugänglich und können auch wahlweise gelöst oder geschlossen werden.The object is achieved according to the invention in the characterizing features of the claim. They enable the ramming boards to be coupled to the supporting frame with adjustable tolerances in a simple and quick manner. The shelves provide the ramming boards with additional strength. The locking devices are freely accessible from the inside of the device and can also be optionally released or closed.

Nachstehend ist die Erfindung anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert. Es zeigen :

  • Figur 1 eine perspektivische Teilansicht einer Verbaueinheit gemäß der Erfindung,
  • Figur 2 eine Draufsicht auf eine Verbaueinheit,
  • Figur 3 eine Draufsicht auf eine Verriegelungseinrichtung in vergrößertem Maßstab und
  • Figur 4 eine Seitenansicht einer Verriegelungseinrichtung.
The invention is explained in more detail below with reference to the drawing using an exemplary embodiment. Show it :
  • FIG. 1 shows a perspective partial view of a shoring unit according to the invention,
  • FIG. 2 shows a plan view of a shoring unit,
  • Figure 3 is a plan view of a locking device on an enlarged scale and
  • Figure 4 is a side view of a locking device.

Gemäß den Fig. 1 und 2 besteht die Verbaueinheit aus mindestens einem starren Tragrahmen 1, der seinerseits aus je zwei Längsholmen 2 und an deren Enden angreifenden, längsverstellbaren Spreizen 3 besteht. Die Längsholme 2 bestehen aus Profilstahlträgern.According to FIGS. 1 and 2, the shoring unit consists of at least one rigid support frame 1, which in turn consists of two longitudinal spars 2 and longitudinally adjustable spreaders 3 which engage at their ends. The longitudinal spars 2 consist of section steel beams.

In regelmäßigem Abstand auf den Längsholmen verteilt sind Führungseinrichtungen 4 angeordnet. Diese bestehen aus ober- und unterhalb des Längsholmes 2 angeschweißten Knotenblechen 5 mit einem nach außen weisenden Steg 6, an dem ein lotrechtes, nach außen offenes U-Profil 7 angeschweißt ist.Guide devices 4 are arranged at regular intervals on the longitudinal spars. These consist of gusset plates 5 welded on above and below the longitudinal spar 2 with an outwardly pointing web 6 to which a perpendicular, outwardly open U-profile 7 is welded.

In diesem U-Profil 7 sind um waagerechte Achsen umlaufende Stützrollen 8 gelagert.In this U-profile 7 support rollers 8 are mounted around horizontal axes.

An der Rückseite des U-Profils 7 sind in Ausnehmungen des Steges 6 scheibenförmige Rollen 9 gelagert, die jeweils um waagerechte, senkrecht zu den Achsen der Rollen 8 gelagerte Achsen drehbar sind. Das U-Profil 7 und die Rollen 8, 9 bilden jeweils einen Führungskopf 10.On the back of the U-section 7 6 disc-shaped rollers 9 are mounted in recesses of the web, which are each rotatable about horizontal axes 8 perpendicular to the axes of the rollers. The U-profile 7 and the rollers 8, 9 each form a guide head 10.

Dem Tragrahmen 1 sind ferner eine Anzahl Rammdielen 11 zugeordnet, die ein wellenförmiges Profil haben, das so ausgebildet ist, daß sich die Seitenkanten benachbarter Rammdielen 11 übergreifen. In einer nach außen vorstehenden Abkantung jeder Rammdiele ist ein C-Profilträger 12 eingeschweißt, in dem der zugeordnete Führungskopf 10 formschlüssig so aufnehmbar ist, daß die Rammdiele 11 senkrecht zum Tragrahmen 1 geführt ist.A number of ramming boards 11 are also assigned to the supporting frame 1, which have an undulating profile which is designed such that the side edges of adjacent ramming boards 11 overlap. A C-profile support 12 is welded into an outwardly projecting bend of each ramming board, in which the associated guide head 10 can be positively received in such a way that the ramming board 11 is guided perpendicular to the supporting frame 1.

In dem verbliebenen Hohlprofil 14 zwischen dem C-Profilträger 12 und einer Wange 13 der Rammdiele 11 sind mit regelmäßigem Abstand übereinander eine Anzahl Anschläge 15 eingeschweißt, die aus waagerechten Fachböden gebildet sind.In the remaining hollow profile 14 between the C-profile support 12 and a cheek 13 of the ramming board 11, a number of stops 15 are welded at regular intervals one above the other, which are formed from horizontal shelves.

Neben den Führungseinrichtungen 4 sind auf den Längsholmen 2 des Tragrahmens 1 jeder Rammdiele zugeordnete Verriegelungseinrichtungen 16 angeordnet, die in den Fig. 3 und 4 in vergrößertem Maßstab dargestellt sind.In addition to the guiding devices 4, locking devices 16, which are shown in FIGS. 3 and 4 on an enlarged scale, are arranged on the longitudinal spars 2 of the support frame 1 of each ramming board.

Jede Verriegelungseinrichtung 16 besteht aus einer auf dem jeweiligen Längsholm 2 befestigten Grundplatte 17, einem darauf angebrachten Lagerbock 18, einem im Lagerbock 18 quer zur Längsrichtung des Längsholmes 2 axial bewegbaren Verriegelungsbolzen 19 und Anschlägen 20, 21. Der Anschlag 20 ist seitlich des Verriegelungsbolzens 19 angeordnet und dient einem an diesem befestigten Sperrhebel 22 als Anlage.Each locking device 16 consists of a base plate 17 fastened on the respective longitudinal spar 2, a bearing block 18 mounted thereon, and axially in the bearing block 18 transversely to the longitudinal direction of the longitudinal spar 2 Removable locking bolt 19 and stops 20, 21. The stop 20 is arranged on the side of the locking bolt 19 and serves as a system for a locking lever 22 attached to it.

Dieser Sperrhebel 22 ist radial am Verriegelungsbolzen 19 befestigt. Der Anschlag 21 ist axial zum Verriegelungsbolzen 19 angeordnet und begrenzt dessen Hub nach rückwärts.This locking lever 22 is attached radially to the locking bolt 19. The stop 21 is arranged axially to the locking bolt 19 and limits its stroke to the rear.

Der vordere Teil 23 des Verriegelungsbolzens 19 ragt in der Sperrstellung (Fig. 3 und 4) in den Raum des Hohlprofils 14 hinein und würde bei einer Relativbewegung zwischen dem Tragrahmen 1 und der Rammdiele 11 an einem der ihn oben und unten begrenzenden Fachböden 15 anstoßen.The front part 23 of the locking bolt 19 protrudes into the space of the hollow profile 14 in the locked position (FIGS. 3 and 4) and would abut one of the shelves 15 delimiting it at the top and bottom if there was a relative movement between the support frame 1 and the ramming board 11.

Durch eine einfache Vierteldrehung des Verriegelungsbolzens 19 und des mit ihm verbundenen Sperrhebels 22, sowie Zurückziehen des Verriegelungsbolzens 19 gegen den Anschlag 21 wird die Verriegelung aufgehoben. Die Rammdiele 11 ist dann gegenüber dem Tragrahmen freibeweglich.The locking is released by a simple quarter-turn of the locking bolt 19 and the locking lever 22 connected to it, as well as pulling back the locking bolt 19 against the stop 21. The ramming board 11 is then free to move relative to the supporting frame.

Im Betrieb kann so die ganze Verbaueinheit außerhalb des zu verbauenden Grabenstücks vormintiert und dann mittels eines geeigneten Hebzeuges in das mehr oder weniger tief ausgehobene Grabenstück abgesenkt werden. Dort könnendann die Rammdielen nach ihrer Entriegelung tiefer in das Erdreich eingerammt werden. Durch die V ormontage der Verbaueinheit werden beträchtliche Einfädelungsarbeiten und nachstellarbeiten vermieden und wird ein gleichzeitiger vorläfiger Schutz des Grabeninnern hergestellt.In operation, the entire shoring unit can be pre-mined outside the trench piece to be installed and then lowered into the more or less deeply dug trench using a suitable lifting device. There, the ramming boards can be driven deeper into the ground after they have been unlocked. By pre-assembling the shoring unit, considerable threading and re-adjustment work is avoided and a simultaneous preliminary protection of the interior of the trench is produced.

Um die Verbaueinheit aus dem wieder verfüllten Graben herauszuziehen, wird der Tragrahmen wieder mit den Rammdielen verriegelt und kann dann als Einheit vom Hebzeug aufgenommen werden.To pull the shoring unit out of the refilled trench, the support frame is locked again with the ramming boards and can then be picked up as a unit by the lifting gear.

Claims (1)

  1. A ditch shoring unit, comprising on the one hand, at least one horizontal adjustable support frame (1) including horizontal, longitudinal girders (2) and horizontal struts (3), and guide heads (10) mounted on said girders (2), and, on the other hand, a plurality of pile driving deal boards (11), having a wave-shaped cross section and being guided along said girders (2) and vertically with respect thereto, and further each pile driving deal board having on its inside surface a guide profile (12) for receiving said guide heads (10) which are mounted on the support frame (1) ; and locking means (16) adapted to temporary connect said support frame (1) to said pile driving deal boards (11), characterized in that each pile driving deal board (11) on its inside surface (directed to the center of the ditch) has vertically spaced- apart horizontal partitions (15) which do not extend beyond the profile of the cross-section of said pile driving deal board and that said locking means (16) are located on said girders (2) and each including a support bearing (18) through which a locking bolt (19) is guided, having a radially extending locking lever (22) which coacts with a laterally disposed locking abutment (20), which locking bolt (19) is capable to be moved into and out of the range (14) between two superimposed partitions (15) of an associated pile driving deal board (11).
EP81100757A 1980-02-09 1981-02-03 Supporting unit for trenches Expired EP0034297B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100757T ATE9604T1 (en) 1980-02-09 1981-02-03 Shoring unit for trenches.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3004923 1980-02-09
DE19803004923 DE3004923A1 (en) 1980-02-09 1980-02-09 MOUNTING UNIT

Publications (2)

Publication Number Publication Date
EP0034297A1 EP0034297A1 (en) 1981-08-26
EP0034297B1 true EP0034297B1 (en) 1984-09-26

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EP81100757A Expired EP0034297B1 (en) 1980-02-09 1981-02-03 Supporting unit for trenches

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US (1) US4376599A (en)
EP (1) EP0034297B1 (en)
JP (1) JPS5851093B2 (en)
AR (1) AR228146A1 (en)
AT (1) ATE9604T1 (en)
AU (1) AU539236B2 (en)
BG (1) BG34764A3 (en)
BR (1) BR8100716A (en)
CA (1) CA1135238A (en)
CS (1) CS216546B2 (en)
DE (1) DE3004923A1 (en)
DK (1) DK51981A (en)
ES (1) ES256303Y (en)
FI (1) FI810306L (en)
GR (1) GR74420B (en)
HU (1) HU183316B (en)
IE (1) IE50770B1 (en)
IL (1) IL62077A (en)
IN (1) IN151579B (en)
MX (1) MX150847A (en)
NO (1) NO810076L (en)
PH (1) PH17538A (en)
PL (1) PL131085B1 (en)
PT (1) PT72453B (en)
RO (1) RO82206A (en)
SU (1) SU971112A3 (en)
YU (1) YU26381A (en)
ZA (1) ZA81822B (en)

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CN103821521B (en) * 2014-02-25 2015-11-25 冯莉莉 The manufacture method of rotary leading truck
US20170002538A1 (en) * 2015-06-30 2017-01-05 Trinity Shoring Products, Inc. System and Method for a Telescopic Strut
CN106381875B (en) * 2016-11-22 2018-04-24 青岛理工大学 A kind of deep basal pit applies the prestressed regulation device of bracing members
US10392770B2 (en) * 2017-11-22 2019-08-27 National Trench Safety, Llc Excavation support system and methods for installing same
EP3714108A4 (en) 2017-11-22 2021-07-28 National Trench Safety, LLC Corner roller cart for excavation support structures and methods for using same
WO2019103925A1 (en) 2017-11-22 2019-05-31 National Trench Safety, Llc Roller cart for excavation support structures and methods for using same
CN108425367B (en) * 2018-04-09 2023-08-29 成都利拓重工机械有限公司 Movable support shield for urban pipe bag construction and mounting seat thereof
CN111549795B (en) * 2020-05-28 2021-07-27 浙江明思特建筑支护技术有限公司 Parallel combined type supporting head
CN111809630B (en) * 2020-07-15 2021-08-10 中国建筑第八工程局有限公司 Steel support filling type support structure and construction method
CN113846645B (en) * 2021-08-25 2022-12-16 东通岩土科技股份有限公司 Foundation pit supporting structure utilizing steel side arch structure

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Also Published As

Publication number Publication date
RO82206B (en) 1983-06-30
AU6685681A (en) 1981-08-20
PL229544A1 (en) 1981-10-16
FI810306L (en) 1981-08-10
MX150847A (en) 1984-07-31
DE3004923A1 (en) 1981-08-20
IN151579B (en) 1983-05-28
PT72453B (en) 1982-02-12
JPS56153020A (en) 1981-11-26
HU183316B (en) 1984-04-28
CS216546B2 (en) 1982-11-26
CA1135238A (en) 1982-11-09
IL62077A (en) 1985-03-31
RO82206A (en) 1983-07-07
GR74420B (en) 1984-06-28
YU26381A (en) 1983-10-31
AR228146A1 (en) 1983-01-31
ES256303Y (en) 1982-04-16
ZA81822B (en) 1981-11-25
SU971112A3 (en) 1982-10-30
PT72453A (en) 1981-03-01
JPS5851093B2 (en) 1983-11-14
US4376599A (en) 1983-03-15
NO810076L (en) 1981-08-10
PH17538A (en) 1984-09-19
PL131085B1 (en) 1984-10-31
ES256303U (en) 1981-10-16
DK51981A (en) 1981-08-10
BR8100716A (en) 1981-08-18
EP0034297A1 (en) 1981-08-26
IE50770B1 (en) 1986-07-09
IE810219L (en) 1981-08-09
ATE9604T1 (en) 1984-10-15
AU539236B2 (en) 1984-09-20
BG34764A3 (en) 1983-11-15
IL62077A0 (en) 1981-03-31

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