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

振动控制系统“土壤改良强化桩基”研究

• 批准号: 15360243
• 负责人: TAKEMIYA Hirokazu
• 金额: $ 6.21万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15360243/
• 关键词: Soil improvement enhanced foundation; Foundation control system; Pile foundation; Honeycomb shaped WIB; Performance design; Soil-structure dynamic interaction; Nonlinear response; High damping fill-in; 複合杭基礎形式; 基礎の性能設計; 非線形動的解析; シミュレーション; 地盤改良

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.

本研究针对一种改良土强化桩基础进行研究。钢筋混凝土、预应力混凝土和预应力混凝土桩基础在强震作用下表现为非线性。土木工程结构的性能化设计是近年来出现的一种新方法。在桩周填充废旧轮胎碎片的蜂窝状改良土对减小地基反应有一定作用。在所谓的Level 2强震情况下，蜂窝型WIB的破坏通过吸收地震能量来挽救结构基础，本文基于有限元模型对蜂窝型WIB进行了计算机模拟。二维和三维分析进行了比较所涉及的参数。出于地震安全考虑，重点关注桩身内力和变形。

项目成果

Enhanced seismic design of pile foundation by honey-cell-WIB

Honey-cell-WIB 桩基增强抗震设计

• 发表时间: 2005
• 期刊: Journal of Structural and Seismic Engineering, Japan Society of Civil Engineers (submitted)
• 作者: Hirokazu Takemiya;Feng Chen
• 通讯作者: Feng Chen

Local site effect-Evidence and theoretical application

局部场地效应-证据与理论应用

• 发表时间: 2005
• 期刊: Japan Society of Civil Engineers
• 作者: Hirokazu Takemiya;others
• 通讯作者: others

Hirokazu Takemiya: "Simulation of track-ground vibrations due to a high-speed train : the case of X-2000 at Lesgard"JOURNAL OF SOUND AND VIBRATION. Vol.261. 503-526 (2003)

Hirokazu Takemiya：“模拟高速列车引起的轨道地面振动：Lesgard 的 X-2000 案例”声音与振动杂志。

Hirokazu Takemiya: "Field vibration mitigation by honeycomb WIB for pile foundations of a high-speed train viaduct"Soil Dynamics and Earthquake Engineering. Vol.24. 69-87 (2004)

Hirokazu Takemiya：“通过蜂窝 WIB 对高速列车高架桥桩基进行现场振动缓解”土壤动力学和地震工程。

SIMULATION OF GROUND VIBRATIONS EXCITED BY SHINKANSEN TRAIN RUNNING OVER VIADUCT

新干线列车驶过高架桥引起的地面振动模拟

• 发表时间: 2004
• 期刊: 地盤環境振動の予測と対策の新技術に関するシンポジウム
• 作者: Bian Xuecheng;Hirokazu Takemiya
• 通讯作者: Hirokazu Takemiya