摘要
针对季节性冰冻地区路基土回弹模量的变化,通过室内试槽土基回弹模量试验,对相同状态下的土体分别进行了室内试槽土基刚性承载板和无侧限圆柱形试件回弹模量试验,建立了无侧限圆柱形试件与试槽土基承载板试验回弹模量之间的关系。为下一步进行大量的季节性冰冻地区冻融循环作用下,无侧限圆柱形试件抗压回弹模量换算为试槽土基承载板试验回弹模量提供依据。
In relation to the change of resilience modulus of subgrade soil in seasonal freezing regions,this paper,based on laboratory resilience modulus test on trail trench soil foundation,carried out trail trench soil foundation rigid bearing plate test and unconfined cylindrical specimen test on the soil mass under the same conditions respectively,and then developed the relationship between the resilience modulus in the both tests,which offered the basis to a large amount of conversion further from compressive modulus of resilience for unconfined cylindrical specimen to that in trial trench soil foundation bearing plate test under the action of freezing and thawing cycle in seasonal freezing regions.
出处
《路基工程》
2014年第5期84-89,共6页
Subgrade Engineering
基金
国家自然科学基金(50708009)
西部交通建设科技项目(2007 318 223 01-1)
陕西省自然科学基金(2006E209)
关键词
季节性冰冻地区
试槽试验
土基回弹模量
刚性承载板
无侧限
圆柱形试件
seasonal freezing regions
trial trench test
soil foundation modulus of resilience
rigid bearing plate
unconfined
cylindrical specimen
