Prediction and Evaluation of Long Extended Infrastructures Near a Fault

断层附近长距离基础设施的预测与评估

基本信息

批准号：
13650527
负责人：
HARADA Takanori
金额：
$ 2.05万
依托单位：
University of Miyazaki
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

A general stiffness matrix method of simulation of earthquake ground motions has been developed for a kinematic model of fault rupture in laterally homogeneous layered media. Using the simulated ground motions with the permanent ground movements near a fault, The effects of the sedimentary layer and the depth of the upper edge of the fault upon the ground motions, and also upon the nature of inelastic response of the viaduct and the pipeline have been examined. It is found that the seismic wave motions near a fault are quite complex, and the spatial and temporal variation looks like the vortexes appearing behind an obstacle in the air or water flow, and also found that the thickness of the sedimentary layer strongly affects on the response behaviors of the viaduct and buried pipeline near a fault.By improving the simulation code of tsunami, the tsunamis of the 1854 Nankai earthquake and the 1968 Hyuganada earthquake have been simulated and their accuracy has been examined by comparing with the observed data. Also the tsunami wave forces acting on the offshore structures have been simulated. It is found that the tsunami wave forces on the structure are estimated to be about 10% of the earthquake loadings. This finding is tentative and the examinations by changing the conditions will be necessary.

在侧面均匀分层培养基中，已经开发了一种通用地震地面运动模拟的僵硬矩阵方法。使用模拟的地面运动与断层接近的永久性地面运动，沉积层的影响以及断层上边缘的深度对地面运动，以及高架桥和管道的无弹性响应的性质被检查。已经发现，断层附近的地震波运动非常复杂，空间和时间变化看起来像是出现在空气或水流障碍物后面的涡流，还发现沉积层的厚度强烈影响在高架桥和埋入管道的响应行为附近。通过改善海啸的模拟法规，1854年南卡地震的海啸和1968年的Hyuganada地震已经模拟，并通过与观察到的数据进行了比较来检查其准确性。也模拟了作用在近海结构上的海啸波力。发现结构上的海啸波估计约占地震载荷的10％。这一发现是暂定的，需要通过改变条件进行检查。

项目成果

期刊论文数量（32）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Oho, K., Harada, T., Nonaka, T.: "3 dimensional response characteristics of continuous viaduct near a fault"Proc. of the 13th World Conference on Earthquake Engineering, Vancourver, Canada, August 1-6, Paper No. 367. (CD-ROM). (2004)

Oho, K.、Harada, T.、Nonaka, T.：“断层附近连续高架桥的 3 维响应特性”Proc。

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

原田隆典, 岡田洋輔, 王宏沢, 小林正樹: "境界要素法に部分解析法を用いた震源断層一不整形地盤系の効率的地震動シミュレーション"地震工学論文集土木学会. Vol.27(CD-R0M). Paper No.72 (2003)

Takanori Harada、Yosuke Okada、Hongze Wang、Masaki Kobayashi：“使用边界元法和部分分析方法对震源断层-不规则地面系统进行有效的地震运动模拟”，《地震工程学报》，日本土木工程师学会，第 27 卷（CD-1）。 R0M) 论文第 72 号 (2003)。