DE202004011702U1 - Infrastructure Channel - Google Patents

Abstract

The invention concerns a method for producing an infrastructure channel (1) which consists of at least two sub-pieces (2) of predetermined length, each sub-piece (2) being cast on-site from cast-in-place concrete (9) or from ready-mixed concrete to form a single piece.

Description

The Invention relates to an infrastructure channel of the type of the main claim. Such an infrastructure channel is known.

Such known infrastructure channels are used, preferably in new development areas, but also at larger renovation projects all supply and disposal lines in one, preferably also summarize walk-in canal.

The Infrastructure channel takes over primarily the sealing and supporting function of the building. Because of its spatial Design allows a direct and permanent control of the media lines. leaks of pipelines and emissions of cables in the pipeline the sole of the structure in liquid or semi-solid form or can gaseous in the air-filled Escape the duct area. Leaks can be caused by Leak warning systems are displayed and do not require excavation. The exchange of lines is possible at any time in the infrastructure channel possible.

For cities in mining areas there are risks of settlement. By separating the static function of the structure and the lines in the line is a higher level of security given opposite the occurrence of leaks and leaks in individual lines. It follows that a development solution with an infrastructure channel exceeds the protective function of a double-walled pipe. Can too Roots about leaking Pipe connections and crack-shaped damage no longer penetrate the lines. Furthermore are a renovation or replacing cables in the cable duct very easily, because of assembly openings construction activity can be done without excavation.

Known Infrastructure channels consist of individual sections, which are mostly reinforced concrete pipes that are factory made and then on the construction site to a pipe duct be assembled using face seals.

Further are construction methods in rectangular cross-section both as precast structures as well as in-situ concrete solutions known.

Such steel-reinforced concrete structures have the disadvantage that with cracks or efflorescence expose the reinforcements so that the reinforcement can rust. A complete destruction the pipes, e.g. B. by explosive action, is the result. Furthermore have the factory-made concrete pipes the disadvantage that their length for manufacturing reasons is very limited. For the Such pipes are also often transported using transport reinforcement equipped. For one certain channel length many of these concrete pipes are necessary which consequently have as many sealing points. And such sealing points always form a weak point.

Furthermore there is also the problem with many individual pipes that leakage from soil subsidence. Also There are problems with mounting during assembly on site.

The Invention is based on the object, the disadvantages shown to avoid and create an infrastructure channel that without Steel reinforcement needs sustainability and durability to increase the channel. Furthermore, the channel should have fewer sealing points, it should make no transport problems and no storage problems and it should be inexpensive to manufacture and maintain.

This Object is achieved according to the invention solved the characterizing features of the main claim. advantageous Developments of the subject matter of claim 1 result from the Features of the subclaims as well as from the description and the drawing.

drawing

On embodiment the invention is illustrated in the drawing and in the description below explained in more detail.

It demonstrate:

1 the infrastructure channel with a complete and two indicated sections in longitudinal section and

2 a section of the infrastructure channel in cross section.

description of the embodiment

An infrastructure channel 1 consists of a larger number of sections 2 , each with two end faces 3 lie close together. In the between two end faces 3 emerging joint 4 is a sealing and expansion joint tape 5 arranged that the end faces 3 seals. The sealing and expansion joint tape 5 has an expansion part 6 and two adjoining sealing parts 7 u. 8th that when pouring in the concrete of the respective section 2 be anchored.

Every single section 2 of the infrastructure channel 1 is made from in-situ concrete in monolithic construction throughout the construction site 9 created. For this purpose, a flat floor surface is created in a construction pit, namely 15 meters long. The section to be created 2 is manufactured in such a way that it can be created in a single daily cycle. (In the drawing in the direction of the arrow.)

First, the formwork 11 (with open bottom) assembled from sheet metal with hinges 12 is provided for swiveling inwards when the concrete has hardened. The concreting process then takes place in coupled sub-steps. First, a sole is placed on the flat floor surface 10 cast. Then a break must be made so that the concrete binds something.

Around on the one hand, the building is monolithic in one day to erect and on the other hand without loss of quality (cracking) creating a special concrete recipe is necessary, on the one hand

• a) early stiffen,
• b) ensures a high green stability of about 6 N / mm ² and
• c) then a slow hardening with lower heat of hydration allows.

The flowing concrete is reinforced 13 in the form of plastic fibers 14 admixed. The plastic fibers 14 are preferably made of polypropylene.

About the inner formwork 11 becomes a drainage fleece 15 excited to absorb the water that escapes when the in-situ concrete is compacted and then releases it again when the concrete hardens.

On the face side, face formwork is used, each with slots for the sealing and expansion joint tape 5 is provided. After completion of the 15 meter section 2 and after the in-situ concrete has set 9 becomes the inner formwork 11 folded and forward from the finished section 2 pulled out.

The next section then becomes the same 2 of the infrastructure channel 1 tackled until the entire infrastructure channel 1 is finished. This then forms a walk-in shell into which supply and disposal lines of any diameter size can be laid. The lines can also be dismantled at any time without excavation.

It it can be seen that the reinforcement with plastic fibers is a special one resistance of the in-situ concrete stress cracks and shrinkage cracks in particular are prevented, on the other hand the early, Impact, shock and abrasion resistance increased. The transportation costs are low. The relatively large length of 15 meters for a section significantly reduces the sealing and danger points of the building. Finally is also opposite the state of the art greater economy to achieve.

1

Infrastructure Channel

2

section

3

faces

4

Gap

5

Seals and expansion joint tape

6

expansion part

7

sealing part

8th

sealing part

9

situ concrete

10

sole

11

casing

12

hinges

13

reinforcement

14

plastic fibers

15

Dränagevlies

Claims (7)

Infrastructure channel in monolithic construction with a number, in its length predetermined, assembled into a continuous channel, characterized in that each individual section ( 2 ) of the infrastructure channel ( 1 ) on site continuously from in-situ concrete ( 9 ) created. Infrastructure channel according to claim 1, characterized in that a reinforcement ( 13 ) of the in-situ concrete ( 9 ) with plastic fibers ( 14 ) is formed. Infrastructure channel according to claim 2, characterized in that the reinforcement ( 13 ) is made of polypropylene fibers. Infrastructure channel according to one of claims 1-3, characterized in that each individual section ( 2 ) of the infrastructure channel ( 1 ) can be created in a single, daily work step. Infrastructure channel according to one of claims 1-4, characterized in that a drainage fleece ( 15 ) is used, which is immediately after compacting the in-situ concrete ( 9 ) absorbs the extracted mixing water and when the in-situ concrete subsequently hardens ( 9 ) returns to it. Infrastructure channel according to one of claims 1-5, characterized in that in the joints ( 4 ) between the individual sections ( 2 ) of the infra structure channel ( 1 ) a sealing and expansion joint tape ( 5 ) is provided, which with sealing parts ( 7 and 8th ) in the two end faces ( 3 ) of the individual sections ( 2 ) is anchored. Infrastructure duct according to one of claims 1-6, characterized in that the concrete has a brief stiffening, further ensures a green stability of about 6 N / mm ² and is then hardenable with low heat development.