强化草地道面土工格室材料性能及应用效果分析

An Analysis of Material Performance and Application Effects for Geo-Cell Reinforcing Grassy Pavements

土工格室强化草地道面是一种新型的简易道面,在面向通用航空、应急救援等场景下的跑道建设中具有显著的技术优势。选择了一种典型的土工格室强化材料,通过室内试验研究了其力学性能(抗拉性能和抗压性能)和耐久性能(抗老化性能和抗侵蚀性能),并基于现场承载能力试验分析了其应用效果。结果表明:单个和2个拼装土工格室材料抗拉强度分别为6.62 MPa和1.09 MPa,抗拉模量分别为100.52 MPa和21.27 MPa;土工格室材料的抗压强度为101.09 MPa,抗压模量为93.60 MPa;高温、低温和紫外线影响下土工格室材料抗拉性能出现不同程度的下降,但仍具有一定的抗老化能力;土工格室材料不受水侵蚀的影响,除冰剂和汽油侵蚀后其抗拉性能下降,但不存在质量损失;在85%的压实度下,土工格室强化草地道面的回弹模量提升了28%,表明土工格室材料对草地道面承载力有一定的强化效果。

The reinforced grassy pavement structure is a new type of simple pavement structure, and has significant technical advantages in the construction of runways for general aviation, emergency rescue and other scenarios. In this paper, a typical geo-cell reinforcement material is selected to study its mechanical properties (tensile and compressive properties) and durability properties (aging resistance and erosion resistance) through laboratory tests. And the application effects are analyzed based on the field bearing capacity test.The results show that the tensile strength and tensile modulus of single and two assembled geo-cells are 6.62 MPa and 1.09 MPa, respectively. The tensile modulus is 100.52 MPa and 21.27 MPa respectively.The compressive strength and compressive modulus of geo-cell materials are 101.09 MPa and 93.60 MPa respectively. The tensile properties of geo-cell materials affected by high temperature, low temperature and ultraviolet rays decrease to a great extent, but they still have a certain anti-aging ability. The geo-cell material is not affected by water erosion, and its tensile performance decreases after the erosion of deicing agent and gasoline, but there is no mass loss. Under the compaction degree of 85%, the resilience modulus of the geo-cell strengthened grassland pavement increase by 28%, and this indicates that the geo-cell material has a certain strengthening effect on the bearing capacity of the grassy pavement.