DE202020102596U1 - Smoke protection device for the tunneling phase of a tunnel built with precast concrete parts - Google Patents

Abstract

Smoke protection device (10) for the advance phase of a tunnel (12) with circular cross-section, which is finished with precast concrete parts (13), consisting of a door frame-like device (14) consisting of two vertical struts (15), each of which has a winding shaft (18) at its upper end areas. for a smoke protection curtain (20) formed from a plurality of overlapping strips (19) are connected and additional, side, between the door frame-like device (14) and the inner peripheral surface (28) of the tunnel (12), covered with smoke protection textiles (29) Sealing elements (27), characterized in that the bottom end regions of the vertical struts (15) are connected via at least one stiffening bracket (16) and that the smoke protection device (10) carrying a smoke protection curtain (20) has at least one tensioning device (35) with which the door frame-like device (14) in the tunnel (12) is fixed.

Description

The invention relates first of all to a smoke protection device for the advance phase of a tunnel with circular cross-sections constructed with prefabricated concrete parts, consisting of a door frame-like device consisting of two vertical struts, each of which is connected at its upper end regions via a winding shaft for a smoke protection curtain formed from a plurality of overlapping strips and lateral, additional sealing elements arranged between the door frame-like device and the inner peripheral surfaces of the tunnel and covered with smoke protection textiles.

A smoke protection device that is formed from a smoke protection curtain that consists of a plurality of overlapping strips is basically, for example, from the EP 2 939 713 B1 known, such smoke curtains are used to separate two fire compartments of a building.

In connection with underground construction sites, e.g. During the tunneling phase of a tunnel with circular cross-section finished with prefabricated concrete parts, it is also known from the state of the art, which cannot be documented in printed form, to use automatic fire extinguishing systems in the area of the tunneling machine or the trailer area.

In addition, water curtains are to be used to limit the smoke in the area of the back-up when mechanically driving tunnels.

In this connection, however, it has been found that such water curtains are hardly suitable for ensuring adequate protection against smoke.

The object of the invention is therefore to provide a simply constructed, inexpensive to manufacture and assemble smoke protection device consisting essentially of a smoke protection curtain, with which it is possible to provide reliable protection against heavy smoke even in the tunneling phase of a tunnel with circular cross-section finished with precast concrete parts of the downstream areas.

• Rauchschutzvorrichtung für die Vortriebsphase eines mit Betonfertigteilen ausgebauten Tunnels mit kreisförmigem Querschnitt, bestehend aus einer türstockartigen Einrichtung aus zwei vertikalen Streben, die jeweils an ihren oberen Endbereichen über eine Wickelwelle für einen aus einer Mehrzahl von sich überlappenden Streifen gebildeten Rauchschutzvorhang verbunden sind und seitlichen, zwischen der türstockartigen Einrichtung und der Innenumfangsfläche des Tunnels angeordneten, mit Rauchschutztextilien bespannten, zusätzlichen Dichtelementen, dadurch gekennzeichnet, dass die bodenseitigen Endbereiche der vertikalen Streben über mindestens eine Versteifungslasche verbunden sind und dass die einen Rauchschutzvorhang tragende Rauchschutzvorrichtung wenigstens eine Spanneinrichtung aufweist, mit der die türstockartige Einrichtung im Tunnel fest angeordnet wird.

The solution to the problem results from a smoke protection device according to the following features of claim 1:

• Smoke protection device for the tunneling phase of a tunnel with circular cross-sections, finished with precast concrete elements, consisting of a door frame-like device made of two vertical struts, each of which is connected at its upper end areas via a winding shaft for a smoke protection curtain formed from a plurality of overlapping strips, and laterally, between the Door frame-like device and the inner circumferential surface of the tunnel arranged, covered with smoke protection textiles, additional sealing elements, characterized in that the bottom end areas of the vertical struts are connected via at least one stiffening tab and that the smoke protection device carrying a smoke protection curtain has at least one tensioning device with which the door frame-like device in Tunnel is firmly arranged.

The smoke protection device according to the invention for the tunneling phase of a tunnel with circular cross-section finished with prefabricated concrete parts has the essential advantage that it very reliably limits the smoke in the downstream area of a developed tunnel with circular cross-section. In addition, this smoke protection device is very simple and inexpensive to manufacture and quick and safe to install.

Ultimately, there is a major advantage that in connection with the installation of the smoke protection device, no damage to the precast concrete parts is required, so that the risk of failure of a precast concrete part due to mechanical processing can be excluded.

In one embodiment of the smoke protection device according to the invention, the stiffening tab rests on the inner circumferential surface of the prefabricated concrete part, as a result of which the route and escape route of the tunnel, which is finished with prefabricated concrete parts, is free with a circular cross section and there is no risk of stumbling in the area of the smoke protection device.

In a preferred embodiment of the smoke protection device according to the invention, the upper corner areas of the door frame-like device are each provided with a diagonal, outwardly directed tensioning device. With this type of clamping device, the door frame-like device of the smoke protection device can be clamped in a very simple and quick and reliable manner in the inner cross section of the precast concrete parts.

In order to further improve the tightness of the smoke protection device, sealing plates which face one another are arranged on the vertical struts in a further embodiment.

An advantageous embodiment of the smoke protection device is characterized in that the smoke protection curtain is arranged on a winding shaft which is provided with a locking arm which can be moved by a motor, the motor being controllable by a signal from a smoke detection system or by manual actuation.

In this embodiment, when the smoke detection system responds, the smoke curtain is brought into the closed position automatically or by manual actuation due to the force of gravity.

To improve the above-mentioned embodiment, it is also possible for a weight to be arranged on the side of the winding shaft which, after the locking arm has been released, provides the torque initially required for closing the smoke protection curtain.

Furthermore, in addition to the aforementioned embodiment, it is possible for the smoke protection curtain to be able to be rolled up onto the winding shaft by means of a manually operated pulling device, as a result of which a complex and possibly fault-prone electrical drive is not necessary.

A further advantageous embodiment of the smoke protection device according to the invention has a winding shaft which is surrounded on three sides by a housing, the lower end region of the housing forming a guide and sealing edge for the multi-part smoke protection curtain which is offset with respect to the axis of rotation of the winding shaft. This configuration of the housing advantageously ensures smoke-tightness in this area.

Further advantages of the smoke protection device according to the invention result from claims 9 and 10.

The invention also relates to precast concrete parts for expanding a tunnel with a circular cross section, which is characterized by a smoke protection device according to one of claims 1 to 10 arranged in the interior of the precast concrete parts.

• 1 Schnittdarstellung durch einen untertägigen Tunnel mit Betonfertigteil und Rauchschutzeinrichtung,
• 2 vergrößerte Teildarstellung des rechten oberen Eckbereichs der türstockartigen Einrichtung gemäß Ansichtspfeil II in 1,
• 3 vergrößerte Teildarstellung des linken oberen Eckbereichs der türstockartigen Einrichtung und
• 4 eine prinzipielle Schnittdarstellung durch Wickelwelle und Gehäuse.

Further advantages of the invention result from the following description of an exemplary embodiment. Show it:

• 1 Sectional view through an underground tunnel with precast concrete and smoke protection device,
• 2nd Enlarged partial view of the upper right corner area of the door frame-like device according to view arrow II in 1 ,
• 3rd enlarged partial view of the upper left corner area of the door frame-like device and
• 4th a basic sectional view through the winding shaft and housing.

In the drawings, a smoke protection device is generally designated by the reference number 10th designated.

The 1 represents a sectional view through a in the mountains 11 arranged tunnels 12th which with a precast concrete 13 has been expanded.

Such tunnels 12th are created in so-called pipe sales, for example, to cross under rivers and are used, among other things, for the passage of power lines in the form of underground cables.

For this purpose, a starting shaft is sunk on one side at a distance from the river and from there, after reaching the intended depth, a starter tube is built in which the tunneling machine including the trailer is mounted. After the start of the tunneling work, the full-cut machine advances step by step and, in parallel, precast concrete parts 13 , some with smoke protection devices installed 10th , through the start shaft into the tunnel 12th transported. The gradually building horizontal “body” made of precast concrete 13 is pushed in each case by a hydraulic cylinder unit on a concrete-lubricating lubricating film in the direction of the advance, whereby after approx. 5 - 7 m advance again a precast concrete part 13 is transported underground, again in the "body" made of precast concrete 13 integrated and, if necessary, moved gradually in the direction of advance by means of the hydraulic cylinder unit.

Technically, it is possible to carry out pipe jacking of this type up to a length of approx. 1500 m, in which case a prefabricated concrete part is approx. Every 200 m 13 with a smoke protection device 10th is provided.

As in 1 shown, there is the smoke protection device 10th from a doorstep-like facility 14 consisting of two vertical struts 15 is formed at the lower end with a stiffening tab 16 and at the top ends with a support 17th are connected. Parallel to the carrier 17th is in the Area of the upper ends of the struts 15 a winding shaft 18th rotatably arranged on the one of overlapping strips 19th Smoke protection curtain made from smoke protection textiles 20 is arranged rollable.

The winding shaft 18th is from a housing 21 surrounded on three sides, with a lower end area 22 of the housing 21 one against an axis of rotation 23 the winding shaft 18th staggered leading and sealing edge 24th for the multi-part smoke curtain 20 trains. (See principle illustration 4th ).

The 1 also shows that each stripe 19th the smoke protection textiles of the smoke protection curtain 20 with a hem at the bottom 25th is provided, which receives a weight, such as a lead tape, in a manner not shown. The Stripes 19th or the hem 25th have a circular shape on the lower edge through which the smoke protection curtain extends 20 in a sealing manner to the course of the stiffening tab 16 hugs. For better lateral sealing of the smoke protection curtain 20 are on the vertical struts 15 furthermore facing sealing plates 26 arranged.

For the purpose of largely smoke-tightness of the smoke protection device 10th are the areas to the left and right of the vertical struts 15 and the area above the beam 17th with sealing elements 27 Mistake. These are frame-like parts, which are between an inner peripheral surface 28 of the precast concrete part 13 and the vertical struts 15 as well as the carrier 17th are jammed, the sealing elements 27 with a smoke protection textile 29 are covered. Just a pipe 30th to remove the heap / cuttings, a luttigour 31 for ventilation (ventilation) of the tunneling as well as power and control line 32 pass through the side sealing elements 27 , with the on the sealing elements 27 arranged smoke protection textiles 29 all the way to the aforementioned pipeline 30th who have favourited Luttentour 31 and the power and control lines 32 be sealed.

In the 2nd is the upper right corner area of the door frame-like device 14 shown. You can see that in the upper end of the vertical strut 15 one from two clamping plates 33 and two clamping bolts 34 formed clamping device 35 is arranged, which is opposite the inner circumferential surface 28 of the precast concrete part 13 can be braced. An analog setup shows the 3rd on the left side of the doorstep-like facility 14 .

It can also be seen that the winding shaft 18th has a lateral extension on which a winding area 36 for a pull chain 37 and a changing area 38 for a textile tape 39 is arranged, at the end of a weight 40 is attached.

The 3rd shows the left corner area of the door frame-like device 14 . The winding shaft also points here 18th an extension on which a pinion gear 41 is arranged. Above the pinion gear 41 is on the vertical strut 15 a swiveling locking arm 42 arranged, which has projections, not shown on the underside, which in the pinion gear 41 intervention. Below the pinion gear 41 is an engine 43 arranged with low power and battery, not shown, the engine 43 an eccentric shaft protruding outwards 44 which is below the locking arm 42 is arranged and on the eccentric shaft 44 is present.

The motor 43 is connected to a smoke detection system in a manner not shown. When the smoke detection system responds, the engine 43 activated so that he the eccentric shaft 44 so that the locking arm rotates 42 is raised and thus the blockage of the pinion gear 41 will be annulled. Because of the extension of the winding shaft 18th arranged weight 40 (see 2nd ) becomes the winding shaft 18th and thus the smoke protection curtain 20 set in motion in the direction of gravity until the entire route from the smoke protection curtain 20 is blocked.

In a manner not shown, the locking arm 42 also from the engagement position in the pinion gear via a manual device, for example by means of a push rod which can be actuated from the travel path 41 be moved and the smoke curtain 20 unrolled.

Before resuming operation, for example after a fire protection exercise, it is possible in a simple manner by manually operating the pull chain 37 the smoke curtain 20 back on the winding shaft 18th wind up, the locking arm 42 then again the upper position of the smoke protection curtain 20 backs up.

Reference list

10th

Smoke protection device

11

Mountains

12th

tunnel

13

Precast concrete

14

door-like facility

15

vertical struts

16

Stiffening strap

17th

carrier

18th

Winding shaft

19th

Stripes

20

Smoke curtain

21

casing

22

lower end area

23

Axis of rotation

24th

Leading and sealing edge

25th

hem

26

Sealing plate

27

Sealing element

28

Inner circumferential surface

29

Smoke protection textile

30th

Pipeline

31

Luttentour

32

Power and control lines

33

Clamping plates

34

Clamping bolt

35

Clamping device

36

Changing area

37

Pull chain

38

Changing area

39

Textile tape

40

Weight

41

Pinion gear

42

Locking arm

43

engine

44

Eccentric shaft

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2939713 B1 [0002]

Claims (11)

Smoke protection device (10) for the advance phase of a tunnel (12) with circular cross-section, which is finished with precast concrete parts (13), consisting of a door frame-like device (14) consisting of two vertical struts (15), each of which has a winding shaft (18) at its upper end areas. for a smoke protection curtain (20) formed from a plurality of overlapping strips (19) are connected and additional, side, between the door frame-like device (14) and the inner peripheral surface (28) of the tunnel (12), covered with smoke protection textiles (29) Sealing elements (27), characterized in that the bottom end regions of the vertical struts (15) are connected via at least one stiffening bracket (16) and that the smoke protection device (10) carrying a smoke protection curtain (20) has at least one tensioning device (35) with which the door frame-like device (14) in the tunnel (12) is fixed. Smoke protection device after Claim 1 , characterized in that the stiffening tab (16) abuts the inner circumferential surface (28) of the precast concrete part (13). Smoke protection device after Claim 1 or 2nd , characterized in that the upper corner areas of the door frame-like device (14) are each provided with a diagonally outwardly directed tensioning device (35). Smoke protection device after Claim 1 or 2nd , characterized in that sealing plates (26) facing one another are arranged on the vertical struts (15). Smoke protection device after Claim 1 , characterized in that the smoke protection curtain (20) is arranged on a winding shaft (18) which is provided with a locking arm (42) movable by a motor (43), the motor (43) being signaled by a smoke detection system or is controllable by manual actuation. Smoke protection device (10) after Claim 5 , characterized in that a weight (40) is arranged on the side of the winding shaft (18) which, after the locking arm (42) has been released, provides the torque initially required for the closing movement of the smoke protection curtain (20). Smoke protection device (10) after Claim 5 or 6 , characterized in that the smoke protection curtain (20) can be rolled up onto the winding shaft (18) by means of a manually operated pull chain (37). Smoke protection device (10) after Claim 5 or one of the following claims, characterized in that the winding shaft (18) is surrounded on three sides by a housing (21) and the lower end region (22) of the housing (21) is arranged offset with respect to the axis of rotation (23) of the winding shaft (18) Forms leading and sealing edge (24) for the multi-part smoke protection curtain (20). Smoke protection device (10) according to one of the preceding claims, characterized in that the multi-part smoke protection curtain (20) has lower seams (25) which are adapted to the course of the stiffening flap (16). Smoke protection device (10) after Claim 9 , characterized in that in each hem (25) distributed over the entire width of the multi-part smoke protection curtain (20) a weight such as lead tape is arranged. Precast concrete parts (13) for expanding a tunnel (12) with a circular cross section, characterized by a smoke protection device arranged in the interior of the precast concrete parts (13). Precast concrete parts (13) according to one of the Claims 1 to 10th .

Images