3.1.2 Cyclic horizontal loading test
(1) Loading
At first the spring unit is deformed vertically by - 20 mm, - 10 mm (tension), 5 mm, 15 mm, 40 mm
(compression). Then the unit is pushed in two horizontal directions in a right angle by a cyclic load
of a hydraulic jack.
(2) Displacements
The horizontal displacement is ± 10 mm in the first cycle, ± 20 mm in the second cycle, ± 30 mm in
the third cycle and ± 42 mm in the forth cycle.
(3) Results
Fig. 5 shows the relation between horizontal load and displacement.
Fig. 6 shows the relation between horizontal spring rate and vertical displacement.
According to Fig. 6, the horizontal spring rate increases with increasing vertical displacements. The
results are the same in both horizontal directions.
3.1.2 Cyclic horizontal loading test(1) LoadingAt first the spring unit is deformed vertically by - 20 mm, - 10 mm (tension), 5 mm, 15 mm, 40 mm(compression). Then the unit is pushed in two horizontal directions in a right angle by a cyclic loadof a hydraulic jack.(2) DisplacementsThe horizontal displacement is ± 10 mm in the first cycle, ± 20 mm in the second cycle, ± 30 mm inthe third cycle and ± 42 mm in the forth cycle.(3) ResultsFig. 5 shows the relation between horizontal load and displacement.Fig. 6 shows the relation between horizontal spring rate and vertical displacement.According to Fig. 6, the horizontal spring rate increases with increasing vertical displacements. Theresults are the same in both horizontal directions.
การแปล กรุณารอสักครู่..
