Gniezno
ROAD DEFORMATION AND SUPPORTING WALL GNIEZNO, POLAND – 1997
Roads (01-001-A)
Repair a deformed old road - country road N° 5, and secure future deformations against a lake. The road had severe deformation, due to soft soil and its location close to a lake. Reduction of loads with 2,4 m layer of Leca® placed in a geotextile, covered with 0,70 m of crashed stone, reinforced with a polyester mesh. Approx. 120 m of the road is passing near by Winiarskiego Lake. The clay “ceiling” layer has 28-degree downtrend to the lake. Static (load from the road) preliminary was secured by building supporting concrete wall 22 high (depth). Below the road is mad so they supported the road with pales build from crushed stones. The road and wall was built in 1997. After few years, under the traffic load, appeared vertical deformations of the road as (see the photo) as well 14 cm horizontal deformation (direction to the lake) of supporting wall.
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POLAND TECHNICAL DATE OF THE PROJECT Design: Technical University in Poznan, Doctor Civil Engineer Jerzy Rzezniczak & Doctor Civil Engineer Slawomir Janinski. Investor: GDDKiA Poznan (General Directory of Country Roads and Motorways, Poznan). Contractor: MOSTY Plock Oddzial Paznan (BRIDGES Plock in Poznan). Place of job: Country Road N° 5 in Poland in Gniezno - Poland. Date of application: 1997. Quantity: ca. 7.000m3. Type of material: Leca® 10-20 mm.
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