水平力を受ける壁杭の挙動について : 壁抗の水平抵抗に関する研究(その1)

抄録

Reinforced concrete slurry walls are often constructed as pile foundations. Lateral resistance of piles with rectangular section like this is discussed in this paper. Lateral loading field tests were performed in the directions of short and long axes of full-scale piles in sand and large-scale model piles in Kanto Loam. The followings were clarified from these test results and analyses. (1) The lateral resistance of this pile is larger in the direction of long axe than in that of short axe. That difference of lateral resistance in both directions tends to increase, as the ratio of the long side to the short side of its section increases. (2) When lateral load is applied to the direction of short axe, the main horizontal subgrade reaction is passive resistance. On the other hand, when the load is applied to the direction of long axe, the main subgrade reactions are frictional resistance which acts along both sides of the pile, and passive resistance which acts in front of the pile. (3) If the adequate coefficients of horizontal subgrade reaction are adopted, these piles can be analysed as beams resting on elastic subgrades in both directions.