The purpose of this paper is to investigate the differential settlements of structures with pile foundations due to negative skin friction resulting from the ground subsidence. In this paper, a three-dimensional finite element method has been presented to analyze the structure-pile-soils interaction. And further, 15 structures-pile-soils models are analyzed by this method. The results are summarized as follows: 1) The differential settlements of structures generally increase in process of time and later gradually decrease, except in the case where the bearing stratum is violently undulated. 2) The bearing stratum for H-type causes the significant differential settlements of structures in comparison with the bearing stratum for S-type and that for E-type. 3) If it is difficult to ensure the end bearing capacity of piles, we may as well adopt the friction piles in order to reduce the differential settlements of structures.
ネガティブフリクションを受ける建築構造物の三次元有限要素法解析
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