Abstract
The paper deals with the time course of the bridge abutments settlement (consolidation of the subsoil) on the motorway D4 in Stupava, Slovakia. The bridge abutments are founded on an earth embankment 5.5 meters in height and a group of piles. Over 6 years of geotechnical monitoring after the construction of bridge abutments, there were measured settlements from 102 to 106 mm. The measured settlement of intermediate bridge piers was only up to 16 mm. Geotechnical calculations and analysis are focused on the comparison of the final settlements prognosis and its time course with the real measured values.
Highlights
Bridge objects No 211-01 and 211-02 are situated at the crossroads “Stupava” of the D4 motorway, which is bridging the D2 motorway in the direction from Bratislava to Stupava
The paper deals with prognosis of the time course of the subsoil consolidation of the bridge abutments and the causes of their over-limit uneven settlement
The geotechnical calculations were focused on the determination of the rate of the final settlement and the time course of settlements of the bridge abutments No 1 and 4
Summary
Bridge objects No 211-01 and 211-02 are situated at the crossroads “Stupava” of the D4 motorway, which is bridging the D2 motorway in the direction from Bratislava to Stupava. In the time period from March 2010 to September 2016 (an overall period of 6.5 years) settlement of the internal piers was measured to be from 12.7 to 16.0 mm and settlement of the bridge abutments from 102 to 106 mm Such an uneven settlement (maximum angular deformation is ∆s / L = 0.0034) causes a significant increase of internal forces in the bearing elements of the bridge structure (especially in the bridge deck) due to the deformation load. The paper deals with prognosis of the time course of the subsoil consolidation of the bridge abutments and the causes of their over-limit uneven settlement. This problem is solved in detail in [1]
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