A Study of the Effects of Multiple Welding Points on the Behavior of Model Spliced Pile in Sand under Cyclic Lateral Load

• Main Authors: Wei-Ting Wu, 吳韋霆
• Other Authors: Kuang-Hsiang Chen
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/45722559147913477153

碩士 === 逢甲大學 === 土木工程所 === 95 === This research investigated the behavior of model spliced single pile, and group spliced piles with two weld points in sand under cyclic lateral load. And the results were compared with those obtained from previous investigation for single point spliced pile and non-spliced pile with the same length and pile cross-section. According to the test results, the following conclusions are summarized as below. (1) The bending moment at the head of the model single pile decreases gradually, with the increase of cycles, for three types of pile. (2) With the increase of cycles, the lateral stiffness at the head of the model spliced single pile for two weld points is obvious greater than that of a non-spliced full-length model single pile ,but it less than the model spliced single pile for one weld point. (3) Two piles in line aligned vertically to lateral force, in the condition of pile space of 2D, 4D, and 6D, with the increase of the pile space, the lateral stiffness at the head of the model spliced group piles for two weld points, is gradually greater than the non-spliced full-length model group piles, but it still less than the model spliced group piles for one weld point. (4) Two piles in line aligned horizontal to lateral force, with the increase of pile space, and the effects of the number of welding points, the bending moment produced by the model spliced group piles for two weld points, the model spliced group piles for one weld point ,and the non-spliced full-length model group piles has apparent diverseness. (5) Two piles in line aligned horizontal to lateral force, in the condition of pile space of 6D, 8D, and 12D, the lateral stiffness at the head of the model spliced group piles for two weld points is greater than the model spliced group piles for one weld point, and a non-spliced full-length model group piles.