Location
Arlington, Virginia
Date
14 Aug 2008, 4:30pm - 6:00pm
Abstract
Under the condition of tamping energy 975～1125 kN.m per blow with four kinds of typical tampers including the shock absorbed and assembled tamper (SAAT) designed by the first author, the tests of vibration acceleration and relative tamping settlement are carried out in situ during the improvement of mud ground with high water content and great void ratio by use of the static-dynamic drainage consolidation method (SDDCM); the synthetic safety distances satisfying the requirement of relative code (under seismic intensity grade 7）are obtained under the condition. The test results show that SAAT enhances the effect of SDDCM in evidence and diminishes vibration influence on surrounding environment obviously. Besides, the laws on initial contact between the tampers and ground, tamper rebound, impact secondary action and transmission of vibration acceleration produced by impacting are analyzed.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Li, Zhang-ming and Lin, Jun-hua, "A Case — Vibration Influences and Its Evaluation in Muck Ground Improvement with the Static-Dynamic Method" (2008). International Conference on Case Histories in Geotechnical Engineering. 1.
https://scholarsmine.mst.edu/icchge/6icchge/session04/1
A Case — Vibration Influences and Its Evaluation in Muck Ground Improvement with the Static-Dynamic Method
Arlington, Virginia
Under the condition of tamping energy 975～1125 kN.m per blow with four kinds of typical tampers including the shock absorbed and assembled tamper (SAAT) designed by the first author, the tests of vibration acceleration and relative tamping settlement are carried out in situ during the improvement of mud ground with high water content and great void ratio by use of the static-dynamic drainage consolidation method (SDDCM); the synthetic safety distances satisfying the requirement of relative code (under seismic intensity grade 7）are obtained under the condition. The test results show that SAAT enhances the effect of SDDCM in evidence and diminishes vibration influence on surrounding environment obviously. Besides, the laws on initial contact between the tampers and ground, tamper rebound, impact secondary action and transmission of vibration acceleration produced by impacting are analyzed.
