DE102022116323A1 - Vehicle restraint and/or noise protection system with prefabricated foundation - Google Patents

Abstract

What is proposed is a method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips with less traffic restrictions through the construction site, in which at least one at least partially prefabricated vehicle restraint module (10) and/or noise protection module, comprising a base module (1) and a vehicle restraint module. and/or noise protection system (7), whereby a prefabricated concrete strip is provided as the base module (1), a foundation pit for receiving the base module (1) is provided and/or excavated, and the base module (1) is placed in the space provided for this purpose Foundation pit is introduced, and wherein the vehicle restraint and / or noise protection system (7) is attached to the base module (1) before or after the base module (1) is inserted into the foundation pit.

Description

The invention relates to a method for assembling a vehicle restraint module and/or noise protection module according to the preamble of claim 1 and a vehicle restraint module and/or noise protection module for roadside strips according to the preamble of claim 8.

A method for assembling vehicle restraint systems is known from the prior art, in which foundation pits are dug at the side of the road, typically for individual post foundations, and these are filled with concrete on site at the construction site (in-situ concrete). The retention systems are then installed in the still liquid concrete so that the concrete can then partially harden around the retention system. Another option is to install the restraint system after the concrete has completely hardened by drilling holes in the concrete in which the restraint system is then anchored. Such a restraint system is installed on a construction site near the side of the road, which sometimes results in a significant reduction in the width of the road. In most cases, however, concrete is not poured by ramming individual posts directly into the ground to anchor a retention system.

The object of the invention is, in contrast, to propose a method for assembling a vehicle restraint module and/or noise protection module for roadside strips or a vehicle restraint module or noise protection module, with which roadway restrictions or traffic obstructions caused by construction sites can be reduced.

This object is achieved, based on a method for assembling a vehicle restraint module and/or noise protection module for roadside strips or a vehicle restraint module and/or noise protection module of the type mentioned in the introduction, by the characterizing features of claim 1 and claim 8, respectively. The measures mentioned in the subclaims make advantageous embodiments and developments of the invention possible.

Accordingly, a method according to the invention is characterized in that at least one prefabricated vehicle restraint module and/or noise protection module, comprising a base module and a vehicle restraint system or noise protection element, is attached, with a prefabricated concrete strip being provided as the base module. First, a foundation pit to accommodate the base module is usually prepared or excavated at the edge of the road on the construction site. The base module is placed in this foundation pit. The vehicle restraint system or noise protection element can be attached to the base module before or after the base module is inserted into the foundation pit.

Such vehicle restraint and/or noise protection systems are installed on the side of the road and, on the one hand, form a geometric boundary of the road or a lane that is visually perceptible to road users, and on the other hand, they also serve safety purposes because they are intended to ensure that a vehicle leaves the road or in the event of an accident .If possible, does not leave the lane in which it is located, or that the surrounding area is better shielded from the resulting road noise. In the event of an accident, this precautionary measure serves to protect the driver involved in the accident because the vehicle in question could, for example, leave the road on a bridge and fall down; But it also serves, for example, to protect people on sidewalks or the like that are parallel to the road. Such vehicle restraint and/or noise protection systems are not only installed when new roads are being built, but are also replaced during road renovation work or renewed in the event of damage, including after an accident, or during maintenance.

These vehicle restraint systems can typically be designed as guardrails. In addition to applications on the side of the road, there are also applications in the area of road medians. Traffic signs (posts, signs, traffic lights, etc.) can also be attached to it.

Another conceivable application of the invention is the installation of noise protection elements, which are intended to reduce the noise caused by vehicles, for example in nearby residential areas.

The base module, designed as a prefabricated concrete strip, has already been produced in advance and is completely dry. As a result, the drying time of the concrete does not fall into the construction site time on the side of the road, so that significantly faster assembly is achieved and overall this construction site can be completed in a significantly shorter time compared to previous methods. Another advantage is that the boundary conditions for drying and curing of the finished part in the factory can be optimally set in terms of the time required and the quality, which is not easily possible outside on a construction site.

Compared to the previous state of the art and the methods commonly used thereafter, The invention makes it possible to significantly reduce the duration of a construction site. It takes at least 28 days for the concrete to dry completely and harden. This period of time is significantly reduced when using a prefabricated concrete part, even to an insignificant extent.

• - Zum einen wird die vorgeschriebene Höchstgeschwindigkeit im Baustellenbereich herabgesetzt.
• - Zum anderen gehen Baustellen vielmals mit einer Fahrbahnverengung einher, weil ein Teil des Fahrbahnbereichs bearbeitet werden muss oder Platz zum Arbeiten, Lagern von Baumaterial oder Rangieren von Baustellenfahrzeugen benötigt wird.
• - In einzelnen Fällen kommt es sogar zu Vollsperrungen und Umleitungen des Verkehrs, wenn der für die Baustelle benötigte Platzbedarf ein sicheres Durchkommen des Verkehrs nicht mehr erlaubt.

A construction site usually hinders the flow of traffic in different ways:

• - On the one hand, the prescribed maximum speed in the construction site area will be reduced.
• - On the other hand, construction sites are often accompanied by a narrowing of the roadway because part of the roadway area needs to be worked on or space is needed for working, storing building materials or maneuvering construction site vehicles.
• - In individual cases there are even complete closures and diversions of traffic if the space required for the construction site no longer allows traffic to pass safely.

The interest in reducing the duration of a construction site is not only for the road users involved who have to drive through or around the construction site, but a construction site is also always associated with a certain level of danger, not only for the road users, but also for The construction workers; Because they work in close proximity to flowing traffic and, despite the provisional reinforcements set up in the construction site area, they can basically only be adequately protected. Furthermore, construction sites generally pose an increased risk of accidents because the roadway is narrowed, the speed sometimes has to be reduced quickly, vehicles have to rearrange themselves and drivers are required to be more attentive.

Furthermore, the long construction site blocks the building company's capacity in terms of personnel, such as the provision of machines and building materials. This also results in a cost advantage in a variant according to the invention if the duration of the construction site can be shortened.

Due to the shorter construction site time, more road sections can be equipped with vehicle restraint and/or noise protection systems in the same period of time compared to previous methods. On the one hand, road traffic is relieved because there are fewer road closure times, which means fewer detours have to be taken through detours. On the other hand, the road workers and their required equipment such as vehicles and construction machinery are tied to individual construction sites for a shorter time, so that companies can accept more orders in the same amount of time. This increases the company's sales.

In addition, safety for road users increases as existing roads can be retrofitted with restraint systems more quickly.

The vehicle restraint and/or noise protection system can in principle be attached to the base module after the base module has been inserted into the foundation pit or can be attached to the base module before it is inserted. This depends, among other things, on whether it is possible to specify a specific shape and size of precast basic modules.

On the other hand, a prefabricated part that includes not only the base module but also the already assembled or attached restraint system also offers advantages because it can be transported compactly and used on the construction site without any further loss of time.

For assembly, as in common procedures, a pit is first dug on the side of the road, which is typically around 80cm to 110cm deep, depending on the nature of the ground. According to the invention, the base module is inserted into this foundation pit as a prefabricated part, so that the upper edge of the base module is arranged at ground level or at least at a similar height to the road surface. However, the vehicle restraint and/or noise protection system should always be installed at an appropriate height above the road surface, which facilitates its function in protecting vehicles and their occupants that leave the road, as well as other road users if necessary.

This means that the method according to the invention or the vehicle restraint and/or noise protection module according to the invention can also be excellently adapted to the individual construction conditions. Sometimes posts cannot be driven into the ground because, for example, there are cables running in the ground or other obstacles in the ground do not allow posts to be driven into the ground; For safe, stable anchoring, the rammed posts must be rammed sufficiently deep into the ground. In such cases, other ways must be found in order to be able to set up a sufficiently stable restraint system, but these are usually time-consuming. The use of the proposed prefabricated base module offers an advantageous alternative that allows for quick Install and offers a high level of stability.

Advantageously, at least two prefabricated vehicle restraint and/or noise protection modules are inserted one behind the other into the foundation pit in series. Such a measure can ensure complete protection for road users over large sections. The vehicle restraint and/or noise protection modules can be designed in such a way that the vehicle restraint and/or noise protection systems of the individual vehicle restraint and/or noise protection modules lie flush with one another or even overlap, so that there are no gaps between them in which a vehicle cannot be restrained can. It is also conceivable here that they are connected to each other to form vehicle restraint and/or noise protection systems, for example screwed or riveted. A connection via an additional connector is also possible. Overall, such connections can increase stability because during force transmission, for example in the event of a vehicle collision, the forces can be distributed over more than one module. It can also prove to be advantageous that the anchoring through the precast foundation can run uninterruptedly or continuously or largely continuously along the edge of the road.

The at least two prefabricated vehicle restraint and/or noise protection modules are preferably fixed to one another, in particular connected to an anchor, preferably screwed and/or glued. An additional connection between two or more vehicle restraint and/or noise protection modules ensures that the protective effect is maintained for a long time and even increases through force distribution. The impulse that occurs in the event of an accident must not only be compensated and absorbed by one vehicle restraint and/or noise protection module, but can be distributed over several vehicle restraint and/or noise protection modules. This allows additional stability of the vehicle restraint and/or noise protection modules to be achieved. In this way, the safety of road users can be guaranteed even when installed on difficult surfaces and even when there is great force, such as accidents involving trucks.

Depending on the design variant, the individual vehicle restraint and/or noise protection modules can be connected to one another by gluing or screwing with anchors or other prefabricated connectors.

Preferably, in one embodiment of the invention, the base module and the vehicle restraint and/or noise protection system are connected with at least one adhesive anchor. In this way, a stable, firm connection is created between the base module and the vehicle restraint and/or noise protection system, which can withstand forces acting in the event of an impact. For this purpose, adhesive anchors that are attached to the vehicle restraint and/or noise protection system are sunk into holes in the base module and glued in place. As a rule, these holes are not pre-drilled in the factory, but are made individually on the respective construction site. These holes are preferably drilled vertically. However, other connection techniques are also conceivable.

In a further exemplary embodiment, the at least one prefabricated vehicle restraint module and/or noise protection module is fixed in the foundation pit using concrete. The vehicle restraint module or noise protection module is additionally stabilized by the concrete in the pit. It is conceivable that a relatively thin layer of concrete is applied to the bottom of the pit and to the sides between the base module and the edge of the pit. It is also conceivable that the gaps between the base module and the edge of the pit are filled with concrete. Although this additional concrete requires a drying time at the road construction site, it is only a formwork using concrete, which requires very little material compared to previous methods due to the relatively thin layer, so that the drying time can still be significantly shorter in previous procedures.

Preferably, a cuboid precast concrete part is used, which extends primarily in the longitudinal direction, in particular is designed like a wall. This shape makes it easy to ensure that the restraint systems are aligned vertically so that they can optimally fulfill their protective effect. In addition, such a shape allows both the alignment of the individual vehicle restraint and/or noise protection modules on the side of the road, for example by arranging the corresponding side surfaces to one another, and the connection of the vehicle restraint and/or noise protection modules to one another to be made simple. Through a wall-like design, the force that acts on the vehicle restraint and/or noise protection system in the event of a collision with a motor vehicle can be transmitted to the ground.

In addition, transport to the assembly site can be easily achieved with cuboid base modules, as these can already lie stably on the loading area due to their shape. The dimensions of the base module can vary and be adapted depending on the truck and/or the course of the road. This is useful for straight stretches to use longer vehicle restraint and/or noise protection modules; in curves it may make more sense to use shorter vehicle restraint and/or noise protection modules.

It makes sense to align the at least two base modules with a guide rail, which are inserted into the recesses of adjacent base modules, with the adjacent recesses being arranged in alignment.

Conceivably, the base module has at least one recess in the lower area, for example on the underside. Advantageously, the recesses are arranged on the base module in such a way that when two or more base modules are arranged in a row, the recesses merge into one another in alignment, so that a guide rail can be inserted into the adjacent recesses. By using a guide rail, the alignment of the individual base modules to one another is supported and thereby simplified.

In a further development of the invention, the base module as a finished part can, for example, be cuboid in shape. If the restraint modules are arranged in the longitudinal direction, it may be advisable to also orient the guide rails or the associated grooves accordingly along the longitudinal direction. A groove into which the guide rail is inserted can be arranged on the underside so that the top of the finished part is available for assembly of the restraint system.

The groove into which, for example, the guide rail is to be inserted can break through the end faces of the base module so that the guide rail can also transition from the groove of one of the base modules into the groove of the adjacent base module and thus enables the adjacent base modules to be aligned with one another.

The guide rail itself is usually used to align the base modules and not necessarily to attach the base modules to one another. For this purpose, for example, additional grooves or recesses can be incorporated into the sides of the base module. In one embodiment variant, these recesses can be designed in such a way that they do not extend through the entire length of the base module. They break through one end but end in the base module. A precast concrete anchor can be screwed to the base module at this end. Two adjacent base modules can in turn have aligned recesses, so that the anchor can reach from one module to the next and fix both together. In principle, a guide rail could also simultaneously enable the function of a fixing connection between the modules.

On the sides, especially if the recesses are arranged closer to the top than to the bottom of the base module, the precast concrete anchors are usually easily accessible during assembly, so that work on the construction site can be made even easier.

The recesses for fixing and fastening the base modules to one another can be shaped so that you can easily reach into them with a tool (e.g. for screwing). Screws or bolts can be used to attach the recesses to the inner wall. For example, some anchors sold under the trade name “HALFEN” can be used to attach the modules to one another.

In order to achieve a particularly high level of stability, the base module can have a steel strut embedded in the concrete of the prefabricated part. This can in particular be box-shaped and thus extend through the entire base module cuboid.

For improved support in the foundation pit or when placed on an existing surface, the base module can have a roughened surface on the underside.

On construction sites, there is often a specification for delivered parts as to the maximum weight an individual part can have, because otherwise the vehicles that have to lift or move the part would also be too big. A guideline value in this case is currently around 6 t. The exemplary embodiments according to the invention can therefore also be adapted to such a guideline in terms of their dimensioning, for example by selecting the length of the modules with or without a vehicle restraint and/or noise protection system so that the weight requirements are met.

Examples:

Embodiments of the invention are shown in the drawings and are explained in more detail below with further details and advantages.

• 1: eine schematische Darstellung eines Basismoduls für ein Fahrzeugrückhalte- und/oder Lärmschutzmodul bzw. für ein Verfahren zur Montage eines Fahrzeugrückhalte- und/oder Lärmschutzmoduls gern, der Erfindung,
• 2: zwei in Serie eingesetzte Basismodule (schematisch dargestellt) mit übereinstimmenden Montagehilfen gern, der Erfindung, sowie
• 3: ein Fahrzeugrückhalte- und/oder Lärmschutzmodul (schematisch) mit Basismodul und Fahrzeugrückhalte- und/oder Lärmschutzsystem gem. der Erfindung.

Show in detail:

• 1 : a schematic representation of a basic module for a vehicle restraint and/or noise protection module or for a method for Assembly of a vehicle restraint and/or noise protection module, the invention,
• 2 : two basic modules used in series (shown schematically) with matching assembly aids, the invention, and
• 3 : a vehicle restraint and/or noise protection module (schematic) with base module and vehicle restraint and/or noise protection system according to the invention.

1 shows a base module 1 of the invention, which has a cuboid basic shape. According to the invention, the base module 1 is designed as a prefabricated part, in particular a prefabricated concrete part, in order to be used directly on the construction site without long waiting times for the concrete to harden, so that further construction work can be carried out without delays. The underside is traversed by a groove 2 in the longitudinal direction or longitudinal extent L. This groove 2 also breaks through the two opposite end faces 3. Are, as in 2 shown, two base modules 1 lined up next to each other, these grooves 2 are aligned. For precise alignment of the base modules 1, a rail can be inserted into the grooves 2, which extends from one base module 1 to the neighboring one. The guide rail therefore runs through at least two base modules 1. In a method variant of the invention, it is also possible to first insert and align the guide rail in the excavated foundation pit, so that the base modules 1 can be placed on the guide rail and are then adjusted.

The basic module is usually designed to be at least 10m long. For this reason alone it has a certain anchoring stability. This length also represents a certain compromise: the modules must still be able to be transported by truck and handled by cranes or other construction vehicles, but on the other hand they must also cover a sufficient length of the construction site.

On the sides of each base module 1 there are recesses 4 at the beginning and end in the direction of the longitudinal extent L, which, however, do not extend completely through the base module cuboid 1, but rather end with a stop 5. An anchor can be inserted laterally into this and screwed onto the inwardly directed stop 5. Like here too 2 As can be seen, these recesses 4 run in alignment with base modules 1 arranged and aligned in series, so that the anchor engages in the recess 4 of the adjacent base module 1 and connects and fixes the two adjacent base modules 1 with one another.

• - Das Basismodul 1 als Fertigteil kann alleine zur Baustelle gebracht werden, und erst nach dem Einsetzen in die Grube wird an den markierten Stellen 6 das Fahrzeugrückhalte- und/oder Lärmschutzsystem 7 montiert.
• - Das hergestellte Fertigteil 10 umfasst beide Komponenten des Fahrzeugrückhalte- und/oder Lärmschutzmoduls und/oder Lärmschutzmodul 10, nämlich das Basismodul 1 und das schon vormontierte Fahrzeugrückhalte- und/oder Lärmschutzsystem 7; das gesamte Fahrzeugrückhalte- und/oder Lärmschutzmodul und/oder Lärmschutzmodul 10, wie es beispielhaft in 3 dargestellt ist, wird in die Fundamentgrube eingesetzt.

In general, two variants are possible:

• - The base module 1 as a prefabricated part can be brought to the construction site alone, and only after it has been inserted into the pit is the vehicle restraint and/or noise protection system 7 installed at the marked points 6.
• - The manufactured finished part 10 includes both components of the vehicle restraint and/or noise protection module and/or noise protection module 10, namely the base module 1 and the already pre-assembled vehicle restraint and/or noise protection system 7; the entire vehicle restraint and/or noise protection module and/or noise protection module 10, as exemplified in 3 is shown is inserted into the foundation pit.

Adhesive anchors for the vehicle restraint and/or noise protection system 7 can be attached to the marked points 6. The marked points 5 can be designed as recesses or holes for secure anchoring. In 3 Posts 8 have been inserted at points 6. The posts 8 are connected by a plank 9, which also closes the gaps between the posts 8 and forms a continuous restraint system 7.

The planks 7 also run in alignment from base module 1 to base module 1 and can be connected to one another to increase stability.

The base module 1 inserted into the foundation pit can be flush with the surface of the ground around the foundation pit with an upper side on which the mounting points 6 (e.g. for the adhesive anchors) are also located. The depth of the pit can also be chosen so that the base module protrudes slightly from the pit, for example to make it easier to adapt to the road surface.

What all embodiments and developments of the invention have in common is that they can reduce roadway restrictions or traffic obstructions caused by construction sites by providing a prefabricated concrete strip as the base module. The corresponding method for assembling a vehicle restraint and/or noise protection module for roadside strips is carried out in such a way that at least one vehicle restraint and/or noise protection module, comprising the corresponding base module in the form of a finished part and a vehicle restraint and/or noise protection system, is attached after a Foundation pit for receiving the base module has been provided and / or excavated, and the base module is placed in the foundation pit provided, in principle the vehicle Retention and / or noise protection system is attached to the base module before or after the base module is inserted into the foundation pit.

The prefabricated strip according to the invention also has clear advantages over a conventional post foundation made of in-situ concrete for restraint systems, as was previously common in the prior art, because a higher degree of restraint stability can be achieved in the event of an impact, and because the proposed system can be installed continuously and without gaps.

In the case of a noise protection module in the sense of the invention, instead of a vehicle restraint system 7, noise barriers or other sound-absorbing elements are attached to the base module 1.

List of reference symbols:

1

Basic module

2

Longitudinal groove for guide rail

3

End faces

4

Recess for anchor connection between base modules

5

attack

6

Installation locations for adhesive anchors

7

Vehicle restraint and/or noise protection system

8th

Retention posts

9

restraint plank

10

Vehicle restraint module

L

Longitudinal extension

Claims (15)

Method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips, characterized in that at least one at least partially prefabricated vehicle restraint module (10) and/or noise protection module, comprising a base module (1) and a vehicle restraint and/or noise protection system (7) , is attached, • whereby a prefabricated concrete strip is provided as the base module (1), • whereby a foundation pit for receiving the base module (1) is provided and/or excavated, and • the base module (1) is placed in the foundation pit provided for this purpose , • wherein the vehicle restraint and/or noise protection system (7) is attached to the base module (1) before or after the base module (1) is inserted into the foundation pit. Method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips Claim 1 , characterized in that at least two prefabricated vehicle restraint modules and / or noise protection modules (10) are inserted in series one behind the other into the foundation pit. Method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the at least two prefabricated vehicle restraint modules (10) and/or noise protection modules are fixed to one another, in particular connected to an anchor, preferably screwed and/or or glued. Method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the base module (1) and the vehicle restraint and/or noise protection system (7) are connected with at least one adhesive anchor. Method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the at least one prefabricated vehicle restraint module (10) and/or noise protection module is fixed in the foundation pit using concrete. Method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that a substantially cuboid precast concrete part is used as the base module (1), which extends primarily in the longitudinal direction (L), in particular designed like a wall is. Method for assembling a vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the at least two base modules (1) are aligned with a guide rail, which are inserted into the recesses (2) of adjacent base modules, whereby the adjacent recesses are arranged in alignment. Vehicle restraint module (10) and/or noise protection module for roadside strips, comprising a base module (1) and a vehicle restraint and/or noise protection system (7), wherein the vehicle Vehicle restraint and/or noise protection system (7) is arranged on the base module (1), the base module (1) being designed as a prefabricated concrete strip. Vehicle restraint module (10) and/or noise protection module for roadside strips Claim 8 , characterized in that the base module is essentially cuboid-shaped, which extends primarily in the longitudinal direction (L), in particular is designed like a wall, with an upper side, a lower side, a first end face (3), a second end face (3), a first side and a second side is formed. Vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the base module (1) has at least one recess (2, 4) on the underside and/or the first side and/or the second side, which extends essentially in the longitudinal direction (L), with the at least one recess (2, 4) also breaking through at least one of the two end faces (3). Vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the base module (1) has a holding recess (4) on at least one of the two sides for receiving and/or inserting a precast concrete anchor, which in particular has a the end faces (3) breaks through. Vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that at least two base modules (1) are arranged in series, which: a. are aligned via a guide rail which is inserted into adjacent recesses (2), and/or b. are attached via precast concrete anchors that are inserted into adjacent, aligned mounting recesses (4). Vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the base module (1) comprises a steel strut. Vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that at least the underside of the base module (1) has a roughened surface. Vehicle restraint module (10) and/or noise protection module for roadside strips according to one of the preceding claims, characterized in that the base module (1) has a weight between 5500 kg and 6500 kg, preferably a maximum of 6000 kg.

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