Studies on wave impeding block (WIB) procedure for vibration reduction

减振波阻块（WIB）程序的研究

• 批准号: 09555145
• 负责人: TAKEMIYA Hirokazu
• 金额: $ 2.62万
• 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: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555145/
• 关键词: Train induced ground vibration; Lineside vibration; 2.5 dimensional FEM-BEM method; Wave propagation; impediment; Vibration prediction; Vibration reduction; WIB procedure; 移動荷重; 多成層地盤; 波動伝播; 列車走行振動; コンピュータ・シミュレーション; 振動予測; 振動対策工法; WIB工法; 人工

This research project first has dealt with the computer simulation of the high-speed train induced ground vibration. The track loading is assumed by a set of harmonio moving function of different frequencies in view of a train geometry (axle distances of a car and connection of cars). Besides, sleeper distances and other vibration factors involved are of essence for the periodicity of alongside vibration so that an inverse analysis is introduced of the measured data for the Shinkansen running. The 2.5 dimensional FEM-BEM method developed by the authors is used for the analysis. Thus simulated ground vibration results in a good prediction for the attenuation of alongside vibration acceleration value (VAL).Next, lineside ground vibrations induced by high-speed trains and the mitigation measure are discussed from the computer simulation. The simulated ground vibration due to a train system of axle loads is interpreted from the knowledge of wave propagation in layered soil. The vibration reduction rate by the proposed X-WIB based on thus obtained information is demonstrated for the wave field before and after the installation.Thirdly, a field construction of a WIB is conduced by a set of soil column construction and the effect of the vibration reduction is measured. The corresponding computer simulation is also carried out in order to validate the aforementioned results for the Shinkansen vibration simulation and the reduction effect by the WIB procedure.

该研究项目首先涉及高速列车引起的地面振动的计算机模拟。考虑到列车几何形状（车厢的轴距和车厢的连接），轨道载荷由一组不同频率的和谐运动函数来假设。此外，轨枕距离等振动因素对于沿线振动的周期性至关重要，因此对新干线运行的实测数据进行了逆分析。采用作者开发的2.5维FEM-BEM方法进行分析。因此，模拟地面振动可以很好地预测沿线振动加速度值(VAL)的衰减情况。接下来，从计算机模拟的角度讨论高速列车引起的沿线地面振动及其缓解措施。由轴荷列车系统引起的模拟地面振动是根据波在层状土壤中传播的知识来解释的。基于由此获得的信息，所提出的 X-WIB 的减振率针对安装前后的波场进行了论证。第三，通过一组土柱构造和振动的影响来进行 WIB 的现场施工。测量减少。为了验证新干线振动模拟的上述结果以及WIB程序的减少效果，还进行了相应的计算机模拟。

项目成果

竹宮宏和 合田和哉: "衝撃/移動荷重による剛基盤上の成層地盤の波動/非伝播現象" 土木学会論文集. 605/1-45. 161-169 (1998)

Hirokazu Takemiya 和 Kazuya Goda：“由于冲击/移动荷载导致的刚性地基上的波浪运动/非传播现象”，日本土木工程师学会论文集 605/1-45 (1998)。

Hirokazu Takemiya: "3-D transient response characteristics of soil stratum due to moving loads" Proceeding of Japan Society of Civil Engineers. No.563/I-39. 137-148 (1997)

Hirokazu Takemiya：“移动荷载引起的土层的 3-D 瞬态响应特性”日本土木工程师学会会议录。

竹宮宏和 合田和哉: "高速列車による沿線地盤への振動の伝播性状" 土木学会衝撃シンポジウム. 229-234 (1998)

Hirokazu Takemiya 和 Kazuya Goda：“高速列车引起的振动沿铁路线传播到地面”日本土木工程师学会冲击研讨会 229-234（1998 年）。

Hirokazu Takemiya: "Effect of WIB installation for ground vibration reduction" Procs.33^<nd> Annual Conference of Japan Geotechnical Society. 2ps.(1998)

Hirokazu Takemiya：“WIB 安装对地面减振的效果”Procs.33^<nd> 日本岩土工程学会年会。

Hirokazu Takemiya: "Effect of ground vibration reduction measure X-WIB for pile foundations" JSCE Annual Conference, Chugoku branch. 2ps.(1999)

Hirokazu Takemiya：“桩基础地面减振措施 X-WIB 的效果”JSCE 年会，中国分会。