بررسی آزمایشگاهی شیروانی‌های خاکی تسلیح شده با تایر فرسوده بر مبنای جابجایی افقی

The number of waste tires around the world has been increasing rapidly in recent years and has become an urgent a serious environmental and economic problem. Today, accumulation of waste tires in the environment one of the biggest threats is to protect the environment and recycling of scrap tires is the best strategy to solve the problem. One of the methods of disposal of waste tire is to use in construction and geotechnical projects. Therefore, it is believed that the reinforced soil with tire becomes a wider application in the future, especially in countries where labor costs are low and machinery is not widespread. Eight large tire factories in the country produces an average of approximately 13.5 million tires ring. With an import of more than 4 million tire rings, an average of 17.5 million tire rings are an average annual consumption of tire. Among which on average, more than 100 thousand ring waste the production line of various factories, with tires consumed and used, and significant high volume of waste creates. In this paper, an experimental study of the soil slopes reinforced with scrap tire horizontal layer based on displacement investigated. Digital images were taken of the side of the model during incremental loading and particle image velocimetry method (PIV) was used. Some important parameters such as the length, number and location of the reinforcing tire layers are studied in this paper. Also in this paper compares the unreinforcement slope with soil slope reinforcement different arrangements and numbers of different layers with variable length (total 25 experiments) have been studied on the horizontal displacement of the slope. The results show that use of tire reinforcement has significant effects on the horizontal displacement under the footing and edge slope. The best reinforcement position is to improve the bearing capacity and lateral displacement of the upper slope. When the four-layer reinforced tire with a length of 60 cm placed in the upper half of the slope is compared to unreinforcement slope, the bearing capacity more than tripled and lateral displacement on the footing of more than 3.10 times and lateral displacement of the upper edge of the slope of more than 2.7-fold reduction. When the six, eight and nine layers of tire reinforcement with a length of 60 cm on the slope are compared to unreinforcement slope the lateral displacement under footing the substrate more than 3.5 times and the lateral displacement in the upper edge of the slope is more than 2 times lower. Three layers of tire with a length of 60 cm in the upper one-third of the slope relative to the unreinforcement slope, the bearing capacity is more than 2.3 times and the lateral displacement of the beneath footing and the edge of the slope are 1.3-1.6 times, respectively. As the length of the reinforcement layer increases, the bearing capacity and lateral displacement is reduced significantly increase. Especially when the length of the reinforcement tire is 60 centimeters, reinforcement length of the rupture wedge passes improve the bearing capacity and lateral displacement footing is significant.