岩土力学2012，Vol.33Issue(12)：3753-3759,7.
非埋式桩板路基动力特性原位激振试验研究
In-situ forced vibration tests on dynamic characteristics of non-embedded pile-board subgrade
摘要
Abstract
In-situ vibration test of non-embedded pile-board subgrade needs to be carried out because this structure's dynamic characteristics are quite different from normal subgrade. DTS-1 dynamic test system is used to test the vibration response, internal force and settlement of a subgrade section in Zhengzhou-Xi'an Passenger Dedicated Line. Result shows that sympathetic vibration will not happen in range of exciting frequency, and subgrade settlement mainly happens on loading plate and will be basically stable after 0.7 million times' loading with a final settlement of 1.0mm after 1 million times' loading. Comprehensive dynamic stiffness is related to thickness of board, span, piles and soil, which can provide well vibration characteristics and long-term dynamic stability for the combining structure of pile-board structure, subgrade and foundation.关键词
非埋式桩板路基/动力试验系统/原位激振试验/振动特性/长期动力稳定性Key words
non-embedded pile-board subgrade/ dynamic test system/ in-situ vibration test/ vibration characteristics/ long-term dynamic stability分类
交通工程引用本文复制引用
白皓,苏谦,黄俊杰,郑键斌,王迅..非埋式桩板路基动力特性原位激振试验研究[J].岩土力学,2012,33(12):3753-3759,7.基金项目
教育部高等学校博士学科点专项科研基金(No.20100184110016) （No.20100184110016）
西南交通大学道路工程四川省重点实验室开放研究基金资助课题(No.LHTE007201107). （No.LHTE007201107）
