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提出将土工格室与填入其内的碎石填料组成的加筋基层置于路堤顶部,以构成一种新型的土工格室低路堤-刚性路面结构体系,并通过2组室内模型试验对该体系的受力变形特点进行研究。采用便携式路面弯沉仪测定了试验路堤中土工格室基层加入前后动态回弹模量的变化,并通过自行设计的一套可实现往复车载的小型模型车的驱动装置模拟作用于路面上的实际车辆荷载。试验结果表明:土工格室基层的加入可显著提高碎石基层的动态回弹模量值,减少直接承受车辆荷载车道的整体平均沉降;并能带动相邻板块下的土体协同工作,提高车辆荷载的扩散均化能力,减少相邻车道间的差异沉降。
It is proposed that the geogrids and the gravel packing filled in the geocell be placed on the top of the embankment so as to form a new geocell low embankment-rigid pavement structure system. Through two sets of indoor model tests, System stress deformation characteristics of the study. The dynamic resilience modulus of the geocell before and after the addition of grass-roots geocell in the embankment was measured by portable road deflection instrument. A set of self-designed driving device of the mini-model car that can reciprocate the vehicle was used to simulate the actual Vehicle load. The results show that the addition of grassroots grass-roots can significantly increase the dynamic modulus of resilience of the gravel base and reduce the overall average settlement of the carriageway directly bearing the vehicle load. It can also promote the soil to work together under the adjacent plate and improve the vehicle Diffusion load leveling ability to reduce the differential settlement between adjacent lanes.