Perfusion Rock-socketed Pile Bearing Capacity Traits And Depth Of Rock-socketed

Study situation of rock-socketed pile is summarized and discussed in this thesis, on the base of this characters of rock-socketed pile and reasonable rock-socketed length are studied. The first datum about mechanical response of rock-socketed pile are abstained, task mechanism and mechanical response rule are discussed and calculated. Main work: 一, static test of pile is done containing settlement measure and stain-stress test on the basis of chaozhou, huizhou and shanwei electrical plant. The conclusions is abstained combining the theory analysis as follow:1, When pile length and the ratio about pile length to pile diameter is less than 25, the ratio about the tip resistance to the top pile load is more than 50 per generally; When pile length and the ratio about pile length to pile diameter is less than 40 and more than 25, the ratio about the tip resistance to the top pile load is between 40 and 50 per generally; When pile length and the ratio about pile length to pile diameter is more than 25, the ratio about the tip resistance to the top pile load is less than 50 per generally.2, There is two P-S curve of rock-socketed pile: a, When pile length and the ratio about pile length to pile diameter is less than 40, the P-S curve is a line approximately, he line slope is controlled by the rock strength; b, When pile length and the ratio about pile length to pile diameter is more than 40, the P-S curve is divided to two lines, the first line is controlled by the subsidence thickness and strength, and the second line by the rock strength.3, When pile length and the ratio about pile length to pile diameter is less than 25, side resistance is aggrandized by increasing of the load, and gently added at high stress level. The test maximum is reached at the max load, and rock-rocketed side resistance is exerted in turn from top to tip. When pile length and the ratio about pile length to pile diameter is more than 25 and less than 40, side resistances of top soil layers are exerted preferably, but the test maximum is reached at the late several loads. rock-rocketed side resistance is exerted in turn from top to tip. When pile length and the ratio about pile length to pile diameter is more than 40, side resistances of top soil...