Undegraded Nonlinear Inelastic Shear Stress vs. Strain Characteristics for Soil Deposits at the Sites of Three Freeway Structures that Collapsed During the Earthquake
地震倒塌的三个高速公路结构现场土壤沉积物的未退化非线性非弹性剪应力与应变特性
基本信息
- 批准号:9416175
- 负责人:
- 金额:$ 7.8万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing grant
- 财政年份:1994
- 资助国家:美国
- 起止时间:1994-09-15 至 1997-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
9416175 Henke The aim of this project is to help advance the Nation's ability to engineer freeway structures to resist earthquakes. The main objective is to provide detailed information on in situ undegraded nonlinear inelastic shear stress vs strain characteristics for the soil deposits at the sites of the three freeway structures that collapsed during the 1994 Northridge earthquake. The information is expected to be of value to analytical investigations aimed at identifying the roles of soil conditions in the collapses. The sites are the I-5/Highway 14 Interchange, Highway 118 close to Woodley, and I-10 at La Cienega. Local soil conditions may have amplified ground motions at these sites. The main feature of the project is that uncertainty caused by test- related disturbances to in situ conditions is expected to be held to a relatively low level. Data is to be measured using a field prototype simplified in situ torsional cylindrical impulse shear testing system currently being constructed for the Federal Highway administration (FHwA). This method provides detailed information on in situ undegraded nonlinear inelastic shear stress vs strain characteristic for soil deposits. The method addresses the well known, but not yet fully-resolved, problem of obtaining detailed information on the soil characteristics of interest without disturbing in situ conditions excessively. This problem can cause considerable uncertainty in the results of earthquake analyses. This project is being co-funded with the FHwA. ***
9416175亨克这个项目的目的是帮助提高国家设计高速公路结构抗震的能力。主要目的是提供关于1994年北岭地震中倒塌的三个高速公路结构现场土层的非退化非线性非弹性剪应力-应变特性的详细信息。预计这些信息将对旨在确定土壤条件在坍塌中所起作用的分析调查有价值。这些地点是5号州际公路/14号高速公路交叉口,靠近伍德利的118号高速公路,以及拉西内加的10号州际公路。当地的土壤条件可能放大了这些场地的地面运动。该项目的主要特点是,与测试有关的干扰对现场条件造成的不确定性预计将保持在相对较低的水平。目前正在为联邦公路管理局(FHWA)建造一套简化的现场扭转圆柱形脉冲剪切试验系统,用于测量数据。该方法提供了土体原位非退化非线性非弹性剪应力应变特性的详细信息。该方法解决了众所周知但尚未完全解决的问题,即在不过度干扰现场条件的情况下获得感兴趣的土壤特性的详细信息。这个问题可能会在地震分析结果中造成相当大的不确定性。这个项目是与FHWA共同资助的。***
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Wanda Henke其他文献
Wanda Henke的其他文献
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{{ truncateString('Wanda Henke', 18)}}的其他基金
Field Adaptation and Evaluation of Prototype of In Situ Geotechnical Torsional Cylindrical Shear Testing System for Earthquake Resistant Design
抗震设计原位岩土扭剪试验系统样机的现场改造与评价
- 批准号:
9260868 - 财政年份:1993
- 资助金额:
$ 7.8万 - 项目类别:
Standard Grant
In Situ Testing Procedure for Obtaining Dynamic and Cyclic Soil Properties
获得动态和循环土壤特性的原位测试程序
- 批准号:
8601419 - 财政年份:1986
- 资助金额:
$ 7.8万 - 项目类别:
Continuing Grant
In Situ Testing Procedure for Obtaining Dynamic and Cyclic Soil Properties
获得动态和循环土壤特性的原位测试程序
- 批准号:
8460719 - 财政年份:1985
- 资助金额:
$ 7.8万 - 项目类别:
Standard Grant
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