废弃橡胶轮胎对散体材料环箍能力的试验研究

发布时间：2018-01-11 00:03

本文关键词：废弃橡胶轮胎对散体材料环箍能力的试验研究　出处：《沈阳建筑大学》2013年硕士论文　论文类型：学位论文

【摘要】：随着汽车工业的发展,处理与日俱增的废旧轮胎成为世界各个国家的难题。目前主要的处理方法是露天堆置,废旧橡胶轮胎不易分解极易滋生蚊虫,造成了“黑色污染”。废弃橡胶轮胎散体材料复合地基技术是一种新型的地基处理技术,有着其自身的优点。应用于路基时,采用废旧橡胶轮胎,以碎石,砂土,建筑废骨料等为填充材料,形成坚固的加强体,使地基具有良好承载力和稳定性,地震时能吸收更多的能量,具有较好的抗震性能,整形回收利用废旧橡胶轮胎,符合环保要求,是一种新型环保的地基处理方法。应用于复合地基时,利用废弃橡胶轮胎约束散体材料桩,形成坚硬的加固体,废弃橡胶轮胎散体材料增强体的横向变形对软弱地基土起挤密作用。地基土的承载潜力进一步被充分合理地发挥和利用。此外,废弃橡胶轮胎碎石桩透水性良好,在地基中可以形成了良好的竖向排水通道,而碎石褥垫层又可以形成了水平排水层。整个体系能够加速地基土的固结,使地基承载力大大的提高。废弃橡胶轮胎散体材料复合地基广泛应用于实际工程中,会收到较好的的社会效益和经济效益,具有良好的应用前景。为了研究内填散体材料的废旧轮胎的的力学性能,本文进行了内填散体材料的废旧轮胎的的轴心抗压试验,得到了内填散体材料废旧轮胎的的抗压强度均值在12MPa,远大于路基所要求的承载力,各种不同型号内填散体材料的废旧轮胎的弹性模量均值为800MPa,普通路基填土的弹性模量为20MPa-80MPa。内填散体材料的废旧轮胎的弹性模量是普通路基填土的10倍,具有较好的抗变形能力。为了研究内填散体材料的废旧轮胎对散体材料的环箍能力,本文进行了内填散体材料的废旧轮胎进行了中心加载实验试验,通过建立砂柱模型,分析了轮胎对散体材料的环箍能力,并以环箍模量为评价指标。废旧轮胎的环箍模量为5000MPa-8000MPa,远大于散体材料桩复合地基土体对桩提供的侧限。论文分析表明,内填散体材料的废旧轮胎具有较好的抗压承载力和受压抗变形能力,废旧轮胎具有较高的环箍能力,适用于废弃橡胶轮胎散体材料复合地基。
[Abstract]:With the development of automobile industry, it has become a difficult problem to deal with the increasing waste tires in the world. At present, the main treatment method is open-air stacking, waste rubber tires are difficult to decompose easily to breed mosquitoes. Waste rubber tire material composite foundation technology is a new type of foundation treatment technology, which has its own advantages. When used in roadbed, waste rubber tire is used to gravel. Sand, construction waste aggregate and other filling materials, forming a strong reinforcement, so that the foundation has good bearing capacity and stability, earthquake can absorb more energy, with better seismic performance. Plastic recycling and recycling of waste rubber tires, which meet the requirements of environmental protection, is a new environmental protection method of foundation treatment. When used in composite foundation, the waste rubber tire is used to restrain the bulk material pile to form a hard solid. The transverse deformation of waste rubber tire material reinforcements compacts the soft foundation soil, and the bearing potential of the foundation soil is further fully and reasonably utilized. The waste rubber tire gravel pile has good permeability and can form a good vertical drainage channel in the foundation, and the gravel cushion can form a horizontal drainage layer. The whole system can accelerate the consolidation of the foundation soil. The foundation bearing capacity is greatly improved. The waste rubber tire material composite foundation is widely used in practical engineering, it will receive better social and economic benefits, and has a good application prospect. In order to study the mechanical properties of waste tire with inner filler material, the axial compression test of waste tire with inner filler material was carried out in this paper. The average compressive strength of the waste tire is 12 MPA, which is much larger than the bearing capacity required by the roadbed. The average elastic modulus of waste tyres with different types of internal filler materials is 800MPa. The elastic modulus of the ordinary subgrade fill is 20MPa-80MPa. The elastic modulus of the waste tire is 10 times as high as that of the ordinary subgrade filling, and it has better anti-deformation ability. In order to study the hoop ability of the waste tire of the inner packing material to the bulk material, the center loading test of the waste tire is carried out in this paper, and the sand column model is established. The hoop capacity of tire to bulk material is analyzed, and the hoop modulus of waste tire is 5 000 MPA ~ 8 000 MPA, and the hoop modulus of waste tire is 5 000 MPA. It is much larger than the lateral limit provided by the soil on the composite foundation of bulk material pile. The analysis of the paper shows that the waste tire with the inner packing material has better compressive capacity and deformation resistance, and the waste tire has higher hoop capacity, which is suitable for the composite foundation of the scrap rubber tire material.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU470

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