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DOLRE N232 (TL2 according to MASH*) 

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* determined by numerical computation

Outstanding design

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Fuse system:

  • saving installation time

  • preservation of the support (concrete)

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The lowest transmitted efforts of the market:

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M=11 kNm

V=44 kN/post

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Briefly ...

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Steel restraint systems are linear elements designed to straighten the path of vehicles. They are made by assembling steel components.

 

In accordance with NBN EN 1317-1/2/5, the performance are:

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  • Minimum containment level: N2 (=TL2)

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  • Maximum working width : Wn 3

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  • Vehicle intrusion : VIn 3

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  • Acceleration Severity Index (ASI) :  ASI B

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The additional features are:

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  • To ensure the guardrail function, the overall height in relation to the concrete support ≥1,20 m

  • To limit the influence on the structure, the maximum space requirement between front and rear post face = 47 cm

  • To limit or even avoid reinforcements, the forces transmitted by post 4.0 are M=11 kNm, V=44 kN

  • For maintenance reasons and possible in situ push tests the fussible system it is located outside of the anchorage, meaning , on the post.

Guardrail fonction:

  • Handrail height at 1.2m.

  • Filling preventing the passage of a 15cm diameter cylinder.

  • CE certification of the entire system (slide + filling).

DOLRE

DOLRE

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Certified Transitions


In compliance with the French National Road Equipment Regulation, transitions to a standard H2 section (metallic or concrete GBA) are evaluated and certified under the NF058 mark.
For possible layouts and technical datasheets, see the “Transitions” tab.

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Crash-Tested on Anchored and Non-Anchored Plinths

DOLRE H2 has been successfully tested four times.

Multiple crash tests were performed to safely demonstrate the possibility of installing the barrier on non-anchored plinths in various configurations, facilitating worksite execution.

The flexible design of DOLRE H2 and its patented plate fuse system allowed us to rigorously test its real-world performance on non-anchored plinths.

TRANSPOLIS H2 TB51 Test #1

  • Anchored plinth

  • 15 cm thick (15 cm visible step)

  • 50 cm wide

  • W4 = 1.3 m

  • Vi3 = 1 m

TRANSPOLIS H2 TB51 Test #2

  • Non-anchored, non-embedded plinth

  • Cast on asphalt with rear stop

  • 15 cm thick (15 cm visible step)

  • 65 cm wide

  • W3 = 1 m

  • Vi3 = 1 m

TRANSPOLIS H2 TB51 Test #3

  • Non-anchored, non-embedded plinth, bonded with no rear stop

  • 15 cm thick (15 cm visible step)

  • 65 cm wide

  • W3 = 1 m

  • Vi3 = 0.9 m

TRANSPOLIS H2 TB51 Test #4

  • Non-anchored, embedded plinth, unbonded with rear stop

  • 25 cm thick (15 cm visible step)

  • 50 cm wide

  • W4 = 1.2 m

  • Vi4 = 1.3 m
     

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Expansion Joint Crossing up to 250 mm

Crash-tested system for expansion joints up to 250 mm in H2 level.
Conventional expansion joint systems for gaps under 100 mm are also available.

Accessories

Several infill solutions (pedestrian guardrail per NF P98-405, bat screens, catenary canopies, or architectural guardrails) have obtained CE certification when used with the H2 restraint system.

LED-integrated versions are also available.

DOLRE H2 at a Glance

Restraint systems are linear elements designed to redirect vehicles back onto their intended trajectory. They are manufactured by assembling steel components.

In compliance with EN 1317:

  • Minimum containment level: H2

  • Maximum working width: W3 = 0.9 m (or W4 = 1.3 m if the front edge of the plinth is aligned with the tubes, e.g. with a 50 cm plinth)

  • Vehicle intrusion: VI3 = 1.0 m

  • Maximum impact severity level: ASI B

  • Full-scale crash test at H2 level (TB51) performed on the barrier over a 250 mm expansion joint

Technical Features:

  • Cyclist protection ensured with an overall height ≥ 1.20 m above concrete support

  • Compact footprint: only 47 cm between the edge of the structure and the front of the barrier

  • ULS loads per post transmitted to the plinth: M = 11 kN·m, V = 44 kN

  • Fuse located outside of the concrete and anchor (inside the post) for easy inspection or in-situ load tests

Guardrail Function:

  • Handrail height: 1.2 m

  • Infill preventing passage of a 15 cm diameter cylinder

  • CE certification for the entire system (barrier + infill)

Geometric Definition:

  • Post spacing: 2 m

  • Longitudinal elements: round tubes Ø 100 or 120 mm

  • Aesthetic finish: longitudinal connections hidden on the front 180° (bolting located only on the rear 180°)

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