DE3314813C1

DE3314813C1 - Method of producing galleries and tunnels from precast concrete tubes

Info

Publication number: DE3314813C1
Application number: DE19833314813
Authority: DE
Inventors: Benedikt Dipl.-Ing. 4200 Oberhausen Weiss
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-04-23
Filing date: 1983-04-23
Publication date: 1984-11-29

Abstract

To produce galleries or tunnels from precast concrete tubes (1), a method is described in which the concrete tubes (1) are driven successively from a pressing pit (9) as a continuous line of tubes in an open trench (3) by means of a hydraulic driving device (10). The walls of the trench (3) are secured by perpendicular sheeting panels (4), the overall depth T of which is determined by the natural angle of slope of the ground. At an angle alpha of slope of less than 45 DEG , the sheeting panels (4) reach with their bottom edge down to the lateral lines (8) of the concrete tubes (1), the width B of the trench (3) corresponding to the outside diameter D of the concrete tubes (1). If the angle alpha of slope is above 45 DEG , the bottom edge of the sheeting panels (4) points to just above the outer shell of the concrete tubes (1), the width B of the trench (3) being smaller than the outside diameter D of the concrete tubes (1). <IMAGE>

Description

Bei der in F i g. 1 und 2 dargestellten Ausführung werden mehrere Betonrohre 1 von einer Preßgrube 9 aus mittels einer hydraulischen Vortriebseinrichtung 10 an der Sohle eines Grabens 3 vorgedrückt, wobei der am In the case of the in FIG. 1 and 2 illustrated embodiment are several Concrete pipes 1 from a press pit 9 by means of a hydraulic propulsion device 10 pushed forward at the bottom of a trench 3, with the on

vorderen Ende befindliche steuerbare Schneidkopf 2 den nicht freigelegten Teil des Grabens 3 anschneidet.front end located controllable cutting head 2 the unexposed Part of the trench 3 cuts.

Die Preßgrube 9 kann in üblicher Weise mit einer Vorpreßschiene 11 und einem Widerlager 12 für die hydraulische Vortriebseinrichtung 10 ausgerüstet sein.The press pit 9 can be provided in the usual way with a pre-press bar 11 and an abutment 12 for the hydraulic propulsion device 10 be.

Am Kopfende des Rohrstranges, vor dem Schneidkopf 2, erfolgt der Aushub des Grabens 3 mittels eines Grabenbaggers 0. dgl. Nach Aushub eines geeigneten Profils werden die Grabenwände durch Verbautafeln 4 gesichert. Vorzugsweise werden Verbaueinheiten verwendet, die aus zwei parallel angeordneten und durch Spreizorgane 5 in dem vorgesehenen Abstand gehaltenen Verbautafeln 4 bestehen. Ist ein Stück des Grabens mit einer entsprechenden Breite ausgehoben worden, wird die Verbaueinheit mit dem Bagger eingesetzt und, gegebenenfalls nach weiterem Aushub, bis zu der vorgesehenen Einbautiefe Tnach unten gedrückt. At the head end of the pipe string, in front of the cutting head 2, the Excavation of the trench 3 by means of a trench excavator 0. The like. After excavation of a suitable one Profile the trench walls are secured by sheeting panels 4. Preferably be Shoring units used, which consist of two parallel arranged and spreading organs 5 shoring panels 4 held at the intended distance exist. Is a piece of the trench has been dug with a corresponding width, becomes the shoring unit used with the excavator and, if necessary after further excavation, up to the intended Installation depth T pressed down.

Die Einbautiefe Tder Verbautafeln 4 wird durch den natürlichen Böschungswinkel a des Erdreichs bestimmt. The installation depth T of the shoring panels 4 is determined by the natural slope angle a of the soil determined.

Steht ein Boden mit einem Böschungswinkel n kleiner als 45" an, hierzu gehören auch alle rolligen Böden, Sandböden u.dgl., so reichen die Verbautafeln 4 mit ihrer Unterkante bis zur Höhe der Seitenlinien 8 der Betonrohre 1, wobei die Breite B des Grabens 3 dem Außendurchmesser D der Beton rohre entspricht. Bei dieser Ausführung kann das Erdreich vor dem Schneidkopf auch bei einem extrem niedrigen Böschungswinkel 0' nur bis zur Höhe der Unterkante der Verbautafeln 4 nachrutschen, und der Schneidkopf 2 fährt in diesem Fall etwa den halben Rohrquerschnitt auf. Handelt es sich hingegen um einen bindigen, stehenden Boden mit einem natürlichen Böschungswinkel größer als 45°, z. B.If there is a ground with an angle of repose n less than 45 ", do this If all coarse soils, sandy soils, etc., also belong, the shoring panels are sufficient 4 with its lower edge up to the level of the side lines 8 of the concrete pipes 1, the Width B of the trench 3 corresponds to the outer diameter D of the concrete pipes. At this Execution can be the soil in front of the cutting head even at an extremely low level Slope angle 0 'only slide up to the level of the lower edge of the shoring panels 4, and in this case the cutting head 2 opens about half the pipe cross-section. If, on the other hand, it is a cohesive, standing soil with a natural one Slope angle greater than 45 °, e.g. B.

einen lehmhaltigen Boden, kann die Breite B des Grabens 3 kleiner als der Außendurchmesser D gewählt werden (vgl. F i g. 3). Die Bautiefe T ist in diesem Fall geringer und die Verbauplatten 4 liegen mit ihrer Untcrkante knapp über dem Außenmantel der Betonrohre 1.a loamy soil, the width B of the trench 3 can be smaller can be selected as the outer diameter D (see FIG. 3). The overall depth T is in In this case less and the shoring panels 4 are just above with their lower edge the outer jacket of the concrete pipes 1.

Die F i g. 2 und 3 lassen die Seitenböschungen 6 mit zwei verschiedenen Böschungswinkeln a erkennen. Beide Seitenböschungen 6 schneiden sich bei diesen Ausführungen etwa unterhalb der Mittelachse der Bctonrohre 1. Die beim Aushub vor dem Schneidkopf 2 entstehende Endböschung 7 wird ebenfalls vom Schneidkopf 2 angeschnitten. The F i g. 2 and 3 leave the side slopes 6 with two different ones Detect slope angles a. Both side slopes 6 intersect at these Executions approximately below the central axis of the concrete pipes 1. The during excavation before The end slope 7 created by the cutting head 2 is also cut by the cutting head 2.

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Claims

Claim: Method for producing galleries or tunnels from prefabricated concrete pipes, in which the concrete pipes from a press pit by means of a driving device successively in a trench as a contiguous one Pipe string are driven and a non-exposed part of the trench through a cutting head is cut, characterized in that the width (B) of the with vertical shoring panels (4) equipped trench (3) equal to or smaller than the outer diameter (D) of the concrete pipes (1) and that the shoring panels (4) on each side of the trench with a width corresponding to the outer diameter (D).

(B) of the trench (3) one up to the side lines (8) of the concrete pipes (1) Reaching, or with a smaller width (B) of the trench (3) one to just under Obtain depth (T) reaching over the concrete pipes (1).

The invention relates to a method for producing studs or Tunnels from prefabricated concrete pipes, in which the concrete pipes from a press pit from by means of a driving device successively in a trench as a contiguous one Pipe string are driven and a non-exposed part of the trench through a cutting head is cut.

When creating galleries or tunnels from prefabricated concrete pipes is depending on the thickness of the soil above the concrete pipes either worked in closed or open construction. With a thickness up to Open trench construction is often used for two to three times the pipe diameter.

In the case of the known open trench construction, one becomes relatively wider Trench dug, taking into account either the natural slope angle or the trench wall by additional extensions, for example perpendicular Shoring panels, must be secured. Furthermore, with this trench construction, the The trench bed must be prepared precisely so that the concrete pipes lie exactly butt to abut come. The pipes are required by means of a crane, which is on a next to the trench Railway moves, laid in the trench from above. After inserting the pipes, the Filled in the trench and leveled the terrain. The well-known open trench construction has so far had the disadvantage that there is a relatively large amount of work space for laying is needed. To reduce the space requirements and to increase the laying capacity increase, has become known from DE-AS 16 58 772, concrete pipes from a press pit from successively in one by means of a hydraulic propulsion device to drive a roughly V-shaped trench in cross-section as a continuous pipe string, a non-exposed part of the trench being cut by the cutting head will. This hydraulic method of propulsion in an open trench with natural Slope angle has proven itself where there is a sufficiently wide space for the cross-section V-shaped trench is available.

This hydraulic propulsion method is ideal for a narrow construction area just as unsuitable as the well-known open construction, in which the trench walls are secured with shoring panels and the pipes with the help of a crane in the relative wide trench to be laid.

The invention is based on the object of a method of the generic type Art to be further developed in such a way that tunneling even with narrow building area widths is possible.

This object is achieved in that the width of the perpendicular Shoring panels of equipped trench equal to or smaller than the outer diameter the concrete pipes is and that the shoring panels on each side of the trench at one of the Outside diameter corresponding width of the trench one to the side lines the concrete pipes reaching, or with a smaller width of the trench one to Preserved construction depth reaching just above the concrete pipes.

Only an extremely narrow building surface width is required for the new construction method needed. The lateral protection of the trench wall with sheeting panels or sheet piling happens only to such a depth that those formed at the bottom of the trench are formed Cut side slopes approximately below the central axis of the concrete pipe and no Earth material slides more from the sides.

On rough ground where the natural angle of departure is less than 45 ", the installation depth extends to the side lines of the concrete pipe. That's only Material located in the area of the lower pipe cross-section in front of the cutting head the side embankments are cut or driven during the drive. At this The material can only be installed up to an installation depth even with extremely low slope angles slide up to the level of the lower edge of the shoring panels. Is the natural angle of repose of the earth greater than 45 °, e.g. B. in cohesive or standing soils, the The trench width can be selected to be even smaller, in which case the lower edge of the shoring panels is just above the outer jacket of the concrete pipes. For the perpendicular No element protection is claimed for shoring panels.

The installation of the shoring panels and the pipe jacking can be inexpensive match up. First, in front of the cutting head according to the intended Trench width dredged a piece and one from two shoring panels, which by spreading organs be kept at the intended distance, existing shoring unit by means of the Excavator used and, if necessary after further excavation, up to the intended Installation depth pressed down. The excavation forms in front of the cutting head an end slope whose angle of slope is approximately at the lower point of the cutting head starts. During the advance, the cutting head also cuts the end slope. That from Material cut into the cutting head is shoveled forward onto the end slope or pushed and lifted by the excavator. The operations, namely the dredging of the ground, the installation of the sheeting and the driving of the pipe string take place consecutively or simultaneously.

The invention is illustrated by the examples shown in the drawing explained in more detail It shows F i g. t a vertical longitudinal section through a pipe jacking section, F i g. 2 the subject of FIG. 1 in a cross section along the line 1-1 and F i g. 3 shows another embodiment of a pipe jacking section in a cross section.