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.

新罕布什尔大学正在开发两种新设备，用于测量土壤的就地侧向应力和强度，以及模拟地震载荷的全循环应力反转下土壤的刚度退化。 这些技术的验证需要将使用这些设备获得的结果与其他土壤现场测试的结果进行比较。 这可以通过购买叶片钻孔器和平面膨胀计来实现。 1985 年墨西哥城地震再次强调需要能够表征地震荷载下粘土的原位行为。 然而，不存在普遍接受的方法来测量破坏性地震引起的应变范围内的现场行为。 新罕布什尔大学正在开发的自钻孔压力计和循环压力计显示出能够满足这一需求的巨大希望：购买叶片钻孔器和平面膨胀计将极大地帮助这些设备的验证。