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Comparative Field Tests on Straight-Sided and Belled Piers on Sloping Ground under Combined Uplift and Lateral Loads
Comparative field tests were carried out on two straight-sided piers and two belled piers under combined uplift and lateral loads on arid loess sloping ground with an inclination angle of 20°. The pier-head uplift and lateral displacements, ground surface deformation, and soil pressures on the pier and bell were obtained. For both straight-sided and belled piers on sloping ground under combined uplift and lateral loads, the curves of the applied loads versus pier-head uplift displacement and pier-head lateral deflection exhibited an initial linear segment, a curvilinear transition, and a final linear region, and their capacities should be interpreted from the load test results. The pier-head uplift displacement and pier-head lateral deflection increased nearly at the same displacement increment, and the limit state of a pier on a slope under a combined uplift-lateral load may be primarily governed by the pier-head lateral deflection due to lateral soil failure. Belling may cause greater load-transfer depths and can effectively mobilize more soil to resist the combined uplift and lateral loads, and additional pier embedment in a slope can increase the uplift and lateral resistance to match the level-ground capacity for both straight-sided and belled piers.
Comparative Field Tests on Straight-Sided and Belled Piers on Sloping Ground under Combined Uplift and Lateral Loads
Comparative field tests were carried out on two straight-sided piers and two belled piers under combined uplift and lateral loads on arid loess sloping ground with an inclination angle of 20°. The pier-head uplift and lateral displacements, ground surface deformation, and soil pressures on the pier and bell were obtained. For both straight-sided and belled piers on sloping ground under combined uplift and lateral loads, the curves of the applied loads versus pier-head uplift displacement and pier-head lateral deflection exhibited an initial linear segment, a curvilinear transition, and a final linear region, and their capacities should be interpreted from the load test results. The pier-head uplift displacement and pier-head lateral deflection increased nearly at the same displacement increment, and the limit state of a pier on a slope under a combined uplift-lateral load may be primarily governed by the pier-head lateral deflection due to lateral soil failure. Belling may cause greater load-transfer depths and can effectively mobilize more soil to resist the combined uplift and lateral loads, and additional pier embedment in a slope can increase the uplift and lateral resistance to match the level-ground capacity for both straight-sided and belled piers.
Comparative Field Tests on Straight-Sided and Belled Piers on Sloping Ground under Combined Uplift and Lateral Loads
Qian, Zeng-zhen (author) / Lu, Xian-long (author) / Yang, Wen-zhi (author)
2018-10-31
Article (Journal)
Electronic Resource
Unknown
| British Library Online Contents | 2019
Axial Uplift Behavior of Belled Piers in Sloping Ground
| Online Contents | 2017
Axial Uplift Behavior of Belled Piers in Sloping Ground
| British Library Online Contents | 2017