地震现场的表征和SPT的发展 (N) 到诺伊达市的剪切波速度相关性
Pankaj Kundu1, Devagya Raman2, Anindya Pain2
1Department of Earthquake Engineering, IIT Roorkee, Roorkee, India. pkundu@eq.iitr.ac.in.
Scientific reports
|April 10, 2025
概括
这项研究开发了标准透测试 (SPT-N) 与诺伊达地震活跃地区的剪切波速度 (Vs) 之间的相关性. 这使得可以对抗地震的建筑和城市规划进行地震地点的分类.
科学领域:
- 地质技术工程 地质技术工程
- 地震学 地震学
- 地震工程的工程是地震工程.
背景情况:
- 诺伊达位于主要构造结构附近的地震活跃区域,因此容易受到地震危害.
- 当地土壤条件在地震期间显著放大地面震动,需要对地震地点进行表征.
- 在人口密的地区,通过穿孔测试使用剪切波速度 (Vs) 进行传统的地震现场表征是很困难的.
研究的目的:
- 为诺伊达开发标准透测试 (SPT-N) 值和剪切波速度 (Vs) 之间的经验相关性.
- 为解决诺伊达地区缺乏先前的地震现场表征研究的问题.
- 创建诺伊达的地震地点分类地图,以帮助抗震设计和城市规划.
主要方法:
- 利用来自26个钻井的地质技术数据和来自14个地震横孔测试 (CHST) 的地质物理数据.
- 通过对117个钻井数据进行非线性回归分析,确定了SPT-N和Vs相关性.
- 通过使用图形方法,与全球标准和现有的本地/全球相关性验证了拟议的相关性.
主要成果:
- 为诺伊达的地下开发了SPT-N和Vs之间的可靠的经验相关性.
- 估计所有117个钻孔的剪切波速度 (Vs) 概况.
- 根据NEHRP标准为诺伊达创建了一个全面的地震地点分类地图.
结论:
- 开发的SPT-N-Vs相关性为诺伊达的地震遗址表征提供了一个实用的方法.
- 地震地点分类地图对于开发抗地震结构和区域地震微区划至关重要.
- 这项研究通过详细说明地下地震特性,增强了诺伊达的城市规划和安全法规.
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