路堤填石材料的振动压实特性研究

填石材料组成差异决定填石路堤物理力学性质差别较大,其压实受到材料自身和振动压路机参数等多种因素的影响,而振动碾压又使颗粒发生破碎,使得填石路堤的碾压变得更加复杂.因此,必须研究路堤填石材料的振动压实特性,以充分利用填石材料和振动压路机的性能,提高填石路堤的压实质量.将填石材料看成散体介质,通过分析其强度形成原理和建立2自由度振动压路机-填石系统模型,研究了压路机和填石材料之间力的相互作用关系,及其对填石材料压实的影响,并根据振动理论从不同角度给予解释.结果认为振动压路机的振动强度、颗粒惯性力是影响填石材料压实的主要因素,选择低频高幅振动压路机有利于填石材料的压实.

Study on the Vibration Compaction Properties of Rocky Material filled in Embarkment

Differences of rocky material in graduation and size made much differences in physical-mechanical property of embarkment rock-filled,its compaction properties are influenced by many facts such as material itself and vibratory-roller's parameter,and vibrating compaction crushes the kernels less,thus the compaction of embarkment rock-filled becomes more complex.Therefore,to make full use of the properties of rocky material and vibratory-roller and improve the rolling quality of embarkment rock-filled,vibratory compaction properties of embarkment rock-filled must be studied.Seeing rocky material as dispersoid media,by analyzing the principle forming strength of rocky material and setting up the 2 freedom degree model of vibratory-roller and rocky material,the reciprocity between roller and rocky material and the influence on compaction properties of rocky materials are studied.All these are explained with vibratory theory.Results prove vibratory strength of vibratory-roller and inertia force of kernels are main factors influencing on the compaction.Choosing low frequency and high amplitude vibratory-roller is favorable for compaction.