Studies on vibration control system "Soil improvement enhanced pile foundation"

本研究对一种土工法加固桩基础进行了研究。钢筋混凝土桩、预应力混凝土桩或PHC桩构成的桥梁基础在强震作用下表现为非线性。针对土木工程结构的抗损伤性能设计已于近期陆续出台。在桩周填塞废轮胎碎屑的蜂窝状改良土起到了减小地基反应的作用。在强震的情况下，蜂窝状WIB处的损伤通过吸收地震能量挽救了结构基础，基于有限元模型对蜂窝型WIB进行了计算机模拟。对所涉及的参数对二维和三维分析进行了比较。从抗震安全的角度出发，重点分析了桩的内力和变形。

In this research, a soil improvement enhanced pile foundation has been studied. Bridge foundations made of RC,PC or PHC piles behave nonlinear during strong earthquake motions. The performance design has recently introduced for civil engineering structures against the damages. The honeycomb-shaped improved soil with the fill-in of used-tire shreds around piles works for reducing the foundation response. In the case of strong motions for the so-called Level 2, the damages at the honeycomb shaped WIB save the structural foundation by absorbing seismic energy.Computer simulation has been conducted for the honeycomb type WIB based on the finite element model. The 2-dimensional and 3-dimensional analyses are compared for the parameter involved. The internal forces in piles are focused as well as the deformation for the seismic safety consideration.