To provide a pile head structure capable of controlling a shearing force acting to a pile head in accordance with a magnitude of an earthquake by means of a relatively simple pile head separating structure for improving the performance of an earthquake-proof construction.
A slide plate 3 such as a steel plate or the like which can be horizontally installed at least to one side of a bottom surface of a foundation slab 2 or a top surface of a foundation pile 1 is installed between them; friction-adjusting materials 4 capable of adjusting frictional forces between them (treating materials 5 such as coating materials, slipping agents to be coated to the surface of slide plates, and edge cutting materials 6 such as sand) are applied. Then, the frictional force is adjusted between the coefficients of friction of 0.2 and 0.5 thereby permitting to provide rigid joints during medium to minor earthquakes in which a horizontal force acting to the superstructure is small and thus horizontal forces can be transferred to foundation piles 1. When a great earthquake occurs wherein the horizontal force is very large, pile heads are separated and a foundation slab 2 is horizontally moved relative to the foundation piles 1.
COPYRIGHT: (C)2008,JPO&INPIT
KOBAYASHI KOICHI
TANAKA YUJIRO
| JP2002070039A | 2002-03-08 | |||
| JP2000248560A | 2000-09-12 | |||
| JP2004244876A | 2004-09-02 | |||
| JPS59187922A | 1984-10-25 |
Kumon enjoyment
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