Laserfiche WebLink
EPS Geofoam 2001,3rd International Conference, Salt Lake City,December 2001 12 <br /> mm thickness was specified.To complete the road pavement 400 mm of pavement material was placed on top of the <br /> concrete slab. <br /> Bridge abutment <br /> 0 x <br /> , � <br /> 1 =Telescopic rods 3 = Settlement tube <br /> A - E - Pressure cells <br /> Figure 21. Cross section indicating location of monitoring equipment <br /> In order to monitor the behaviour of the reconstructed bridge both settlement and stress gauges have been installed. <br /> The different types of gauges and their locations in relation to the bridge abutment are indicated on the cross section <br /> in figure 21.Prior to reconstruction the settlement rates of the adjoining fills were observed to be 100 mm/year and <br /> constant.After reconstruction the settlements have nearly been halted as shown on figure 22. <br /> Observed stresses beneath the EPS fill indicate a higher stress under the central part of the abutment than under the <br /> edges as shown in figure 23.Calculated loads on the abutment are indicated by the heavy line drawn in the diagram. <br /> Problems associated with providing enough lifting force when jacking up the bridge deck may,however,indicate <br /> that reaction forces from the bridge deck are somewhat higher than calculated. <br /> Hjelmungen bridge Axis 1 80 <br /> Settlements in 5 m EPS <br /> 70 <br /> 0 +— 4 60 <br /> -5 <br /> E -10 .Z 50 <br /> E -15 .-.—Right <br /> position m <br /> c -20 t Left 40 - <br /> E -25 position m <br /> 2 -30 a 30 <br /> m <br /> N -35 t <br /> 20 <br /> -40 to <br /> ic <br /> Loading situation —CellA <br /> �-45 10 Cell D -- -Cell C <br /> jan.96 Jan.97 jan.98 jan.99 jan.00 Jan.01 eil B —6 Cell E <br /> 0 <br /> Figure 22. Measured settlements at Hj elmungen Jan-96 Jan-97 Jan-98 Jan-99 Jan-00 Jan-01 <br /> Long term performance and durability of EPS as a lightweight filling material <br />