Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
  • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
  • E01F8/0023—Details, e.g. foundations
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
  • E01F15/02—Continuous barriers extending along roads or between traffic lanes
  • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
  • E01F15/0476—Foundations

Definitions

• 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 to a vehicle restraint module and/or noise protection module for roadside verges according to the preamble of claim 7.
• a method for installing vehicle restraint systems is known from the prior art. This method involves excavating foundation pits at the roadside, typically for individual post foundations, and filling these with concrete on site (in-situ concrete). The restraint systems are then installed in the still-liquid concrete, allowing the concrete to partially harden around the restraint system. Another option is to install the restraint system only after the concrete has completely hardened, by drilling holes in the concrete into which the restraint system is then anchored. The installation of such a restraint system takes place on a construction site in the area of the roadside, which can sometimes result in a significant restriction of the roadway width. In most cases, however, concreting is dispensed with; individual posts for anchoring a restraint system are driven directly into the ground.
• 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
• a noise protection element is installed, with a precast concrete strip being provided as the base module.
• a foundation pit is usually prepared or excavated at the edge of the roadway on the construction site to accommodate the base module.
• the base module is placed into 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 placed in the foundation pit.
• Vehicle restraint systems are typically designed as guardrails. In addition to applications on the shoulder, they can also be used in the median strip. Traffic signs (posts, signs, traffic lights, etc.) can also be attached to them.
• the base module designed as a precast concrete strip, is prefabricated and fully cured. This means the concrete drying time does not interfere with the construction site's curbside time, resulting in significantly faster assembly and, overall, a much shorter construction time than with previous methods.
• a further advantage is that the conditions for drying and curing the precast element can be optimally adjusted in the factory with regard to the required time and quality, something that is not easily possible on a construction site.
• the vehicle restraint and/or noise protection system can, in principle, be attached to the base module after it has been placed in the foundation pit or even before it has been installed. This depends, among other things, on whether a specific shape and size of prefabricated base modules can be specified.
• a prefabricated component that includes not only the base module but also the already assembled or attached restraint system also offers advantages, as it can be transported compactly and used on the construction site without any further loss of time.
• a pit is first dug at the side of the road, as is common practice. Depending on the soil conditions, this pit is typically dug to a depth of approximately 80 cm to 110 cm.
• the base module is inserted into this foundation pit as a prefabricated component, so that the upper edge of the base module is at ground level or at least at a similar height to the road surface.
• the vehicle restraint and/or noise protection system should always be installed at a corresponding height above the road surface, which facilitates its function of protecting vehicles and their occupants that leave the roadway, as well as other road users from vehicles that leave the roadway.
• At least two prefabricated vehicle restraint and/or noise protection modules are inserted in series into the foundation pit.
• 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 against one another or even overlap, eliminating any gaps in between which a vehicle cannot be restrained.
• the vehicle restraint and/or noise protection systems can be connected to one another, for example, by screwing or riveting.
• a connection via an additional connecting piece is also possible.
• Such connections can increase stability because, in the event of force transmission, for example in the event of a vehicle impact, the forces can be distributed across more than one module.
• the anchoring through the precast foundation can run continuously or continuously or largely continuously along the edge of the roadway.
• the at least two prefabricated vehicle restraint and/or noise protection modules are fixed to one another, in particular connected with an anchor, preferably screwed and/or glued.
• An additional connection of two or more vehicle restraint and/or noise protection modules ensures that the protective effect is maintained for a long time and is even increased through force distribution.
• the impulse that occurs in an accident does not only have to be compensated and absorbed by one vehicle restraint and/or noise protection module, but can be distributed across several vehicle restraint and/or Noise protection modules can be distributed. This provides additional stability for the vehicle restraint and/or noise protection modules. This ensures the safety of road users even when installed in difficult terrain and subject to high impact forces, such as those encountered in truck accidents.
• the individual vehicle restraint and/or noise protection modules can also be connected to one another by gluing or screwing with anchors or other prefabricated connectors.
• the base module and the vehicle restraint and/or noise protection system are preferably connected with at least one adhesive anchor.
• adhesive anchors attached to the vehicle restraint and/or noise protection system are countersunk into holes in the base module and glued in place. Typically, these holes are not pre-drilled in the factory, but are individually drilled on site. These holes are preferably drilled vertically. However, other connection techniques are also conceivable.
• 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 pit floor and to the sides between the base module and the pit edge. It is also conceivable that the gaps between the base module and the pit edge are filled with concrete. For this additional concrete, Again, a drying time is required at the road construction site, but it is only a formwork made of concrete, which requires very little material compared to previous methods due to the relatively thin layer, so that the drying time can still be much shorter than with previous methods.
• base modules In addition, transport to the installation site is easy with cuboid-shaped base modules, as their inherent shape allows them to rest securely on the loading area.
• the dimensions of the base module can vary and be adapted depending on the truck and/or road layout. For straight stretches, it is advisable to use longer vehicle restraint and/or noise protection modules; for curves, it may be more appropriate to use shorter vehicle restraint and/or noise protection modules.
• the at least two base modules are aligned with a guide rail which is inserted into the recesses of adjacent base modules, wherein the adjacent recesses are arranged in alignment.
• the base module has at least one recess in the lower area, on the underside.
• the recesses are arranged on the base module such that, when two or more base modules are arranged in a row, the recesses merge into one another in alignment, allowing a guide rail to be inserted into the adjacent recesses.
• the use of a guide rail supports and simplifies the alignment of the individual base modules relative to one another.
• the base module as a prefabricated component can, for example, be cuboid-shaped. If the restraint modules are arranged longitudinally, it may be advisable to also orient the guide rails or the associated recesses or grooves accordingly along the longitudinal direction. A groove into which the guide rail is inserted should be arranged on the underside so that the top side of the prefabricated component is available for the 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 overlap 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 precast concrete anchors are usually easily accessible during assembly, which can further facilitate work on the construction site.
• the base module can incorporate a steel bracing system embedded in the concrete of the precast element. This can be box-shaped, extending through the entire base module cuboid.
• the base module can have a roughened surface on the underside.
• a guideline value in this case is currently around 6 t.
• the embodiments according to the invention can therefore also be adapted to such a guideline in terms of their dimensions, for example, by selecting the length of the modules with or without vehicle restraint and/or noise protection systems so that the weight requirements are met.
• Figure 1 shows a base module 1 according to the invention, which has a cuboidal basic shape.
• the base module 1 is designed according to the invention as a prefabricated part, in particular a prefabricated concrete part, in order to be used immediately on the construction site without any long waiting times for the concrete to harden, so that the further construction work can be carried out without delays.
• the underside is traversed in the longitudinal direction or longitudinal extension L by a groove 2.
• This groove 2 also breaks through the two opposite End faces 3.
• a rail can be inserted into the grooves 2, extending from one base module 1 to the adjacent one.
• the guide rail thus runs through at least two base modules 1.
• Adhesive anchors for the vehicle restraint and/or noise protection system 7 can be attached to the marked locations 6.
• the marked locations 5 can be designed as recesses or holes for secure anchoring.
• Figure 3 Posts 8 have been inserted at locations 6. The posts 8 are connected by a plank 9, which also closes the gaps between the posts 8 and forms a continuous retaining system 7.
• planks 7 From base module 1 to base module 1, the planks 7 also run in alignment and can be connected to each other 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 a top surface where the mounting points 6 (e.g. for the adhesive anchors) are located.
• the depth of the pit can also be selected so that the base module protrudes slightly from the Pit protrudes, for example, to achieve easier adaptation to the road surface.
• the corresponding method for assembling a vehicle restraint and/or noise protection module for roadside verges proceeds 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 prefabricated 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 inserted into the foundation pit provided for it, wherein the vehicle restraint and/or noise protection system is generally attached to the base module before or after the base module is inserted into the foundation pit.
• the precast strip also has significant advantages over a conventional post foundation made of cast-in-place concrete for restraint systems, as has been the case up to now, 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.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Road Paving Structures (AREA)
• Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Applications Claiming Priority (1)

Publications (3)

Family

ID=87003246

Family Applications (1)

Country Status (3)

Family Cites Families (5)

• 2022
  • 2022-06-30 DE DE102022116323.7A patent/DE102022116323A1/de active Pending
• 2023
  • 2023-06-27 EP EP23181799.0A patent/EP4299833B1/de active Active
  • 2023-06-27 PL PL23181799.0T patent/PL4299833T3/pl unknown

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