Engineering Research Equipment for the Validation of a New In-Situ Soil Testing Technique

用于验证新的原位土壤测试技术的工程研究设备

• 批准号: 8705288
• 负责人: Jean Benoit
• 金额: $ 2.96万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-05-15 至 1989-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8705288&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Validation; New

Two new devices are being developed at the University of New Hampshire to measure the in-place lateral stresses and strength of soils, as well as the stiffness degradation of the soil under full cyclic stress reversal, simulating earthquake loading. Validation of these techniques requires that the results obtained using these devices be compared with the results from other field tests of soils. This will be achieved with the purchase of a vane borer and a flat dilatometer. The Mexico City earthquake of 1985 has emphasized once again the need to be able to characterize the in situ behavior of clays subjected to earthquake loading. However, no generally-accepted method exists for measuring such behavior in the field over the range of strains induced by a destructive earthquake. The self-boring pressuremeter and the cyclic pressuremeter being developed at the University of New Hampshire show great promise of being able to meet this need: the validation of these devices will be greatly assisted with the purchase of a vane borer and a flat dilatometer.

新罕布什尔州大学正在开发两种新设备 测量土壤的原位横向应力和强度，以及 由于全循环应力作用下土体刚度退化 反转，模拟地震荷载。 这些技术的验证需要使用 这些装置可以与其他现场测试的结果进行比较， 土壤 这将通过购买一台叶片镗床和一台 平面电阻计 1985年墨西哥城地震再次强调， 能够表征粘土的原位行为， 地震荷载 然而，没有普遍接受的方法存在， 在现场测量在诱导的应变范围内的这种行为 一场毁灭性的地震 自钻式压力计和 新罕布什尔州大学正在研制的循环压力计 显示出能够满足这一需求的巨大希望： 这些设备将大大有助于购买叶片钻孔机 和一个平面温度计。