骨架密实型橡胶沥青隧道铺装抗滑降噪性能研究

发布时间：2018-01-14 07:08

本文关键词：骨架密实型橡胶沥青隧道铺装抗滑降噪性能研究　出处：《重庆交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：参与道路交通已经成为人类活动中必不可少的一部分。交通噪音已成为重大的社会问题之一。同时，交通量的增加、行车速度的加快带来了不能忽视的行车安全问题。因此开发出一种具有良好路用性能，同时抗滑、降噪性能兼备的路面，是亟待进行的研究。本文依托甘肃交通厅隧道铺装项目，借鉴国内外相关研究成果，最终提出一种骨架密实型抗滑降噪路面（Skeleton dense Anti-slip and Quiet Pavement），简称SAQP。将粗颗粒的废胶粉加入到间断级配的沥青混合料中，胶结料采用橡胶沥青，形成类似SMA路面的骨架密实结构，利用大颗粒橡胶粉和橡胶沥青的综合作用，增大路面阻尼系数，从而达到减振降噪的效果；同时具有良好的路用性能和较好的表面特性；进一步的选用橡胶沥青作为胶结料，在混合料拌和时掺入橡胶颗粒取代部分集料的制备方法，，即所谓的湿法和干法相结合的混合料制备方法。本文以上述思想为最初指导，进行了与普通AC-13C和SMA-13混合料的路用性能和功能性的比较和分析，提出了较为新颖的路面阻尼振动能量评价试验。结论和成果如下：通过体积设计方法确定了SAQP-13级配组成，依据马歇尔击实方法确定了不同橡胶颗粒掺量下的马歇尔物理力学指标，并兼顾混合料高温性能确定的不同掺量（1%、2%和3%）橡胶颗粒下SAQP-13的最佳油石比分别为6.0%、6.1%、6.3%。SAQP-13的高温稳定性能优于两种进行对比的混合料类型，其中掺量为3%的SAQP-13的高温稳定性最好，其次为2%和1%，其动稳定度随橡胶颗粒掺量从高到低分别为7351、6209、6028次/mm。SAQP-13混合料随掺量从高到低最大弯拉应变分别为4009με、3367με、3023με大于AC-13C（2822με），低温抗裂性能更好，但是掺量为1%时的SAQP-13低温应变低于SMA-13型混合料。浸水劈裂残留稳定度满足技术要求，SAQP-13浸水残留稳定度比AC-13C和SMA-13小。功能性方面：SAQP型混合料构造深度与SMA混合料处于同一水平，两者大于采用密实型连续级配的AC混合料。掺入橡胶颗粒的SAQP混合料，在不利条件下的摆值衰减小于SMA和AC，证明其抗滑衰减性能优于AC和SMA混合料。SAQP混合料在不同振动频率下的动态模量均小于SMA和AC混合料，阻尼系数明显大于其他两种类型混合料。用振动中阻尼的能量耗散功率来评价混合料，显示出明显优于AC和SMA的特点。
[Abstract]:Participation in road traffic has become an essential part of human activities. Traffic noise has become one of the major social problems. At the same time, traffic volume has increased. The acceleration of driving speed has brought about the problem of driving safety which can not be ignored. Therefore, it is urgent to develop a road surface with good road performance, both anti-skid and de-noising performance. This paper relies on the tunnel pavement project of Gansu Department of Communications, and draws lessons from relevant research results at home and abroad. Finally, a kind of Skeleton dense Anti-slip and Quiet Pavementation is proposed. SAQP. the coarse particle waste rubber powder is added to the discontinuous gradation asphalt mixture. The binder uses rubber asphalt to form the framework dense structure similar to SMA pavement. By using the comprehensive action of rubber powder and rubber asphalt, the damping coefficient of pavement is increased, and the effect of vibration and noise reduction is achieved. At the same time, it has good road performance and better surface characteristics. Further select rubber asphalt as binder, in the mixture mixing with rubber particles to replace some of the preparation of aggregate. That is, the so-called wet process and dry process of mixture preparation method. This paper based on the above ideas as the initial guidance. The road performance and function of AC-13C and SMA-13 mixtures are compared and analyzed, and a novel evaluation test of damping vibration energy of pavement is put forward. The conclusions and results are as follows: the SAQP-13 gradation is determined by volume design method, and the Marshall physical and mechanical indexes under different rubber particle content are determined by Marshall compaction method. At the same time, the optimum SAQP-13 ratio under rubber particles is 6.0% and 6.1%, respectively. The high temperature stability of 6.30.SAQP-13 is better than that of two contrasting mixture types, in which SAQP-13 with 3% content is the best, followed by 2% and 1%. The dynamic stability is 7351t6209 with the content of rubber particles from high to low. The maximum flexural tensile strain of 6028 times / r / mm.SAQP-13 mixture is 4009 渭蔚 ~ 3367 渭蔚 with the content of the mixture from high to low, respectively. 3023 渭蔚 is larger than AC-13C(2822 渭蔚, and the crack resistance at low temperature is better. However, the low temperature strain of SAQP-13 is lower than that of SMA-13 mixture when the content is 1%, and the stability of immersed split residue meets the technical requirements. The residual stability of SAQP-13 was lower than that of AC-13C and SMA-13. In terms of functionality, the structural depth of the: SAQP-type mixture is at the same level as that of the SMA mixture, which is larger than the AC mixture with dense continuous gradation and the SAQP mixture with rubber particles. The pendulum attenuation under unfavorable conditions is less than that of SMA and AC. It is proved that the anti-slip attenuation performance of the mixture is better than that of AC and SMA mixtures. SAQP mixtures have lower dynamic modulus than SMA and AC mixtures at different vibration frequencies. The damping coefficient is obviously higher than that of the other two types of mixtures, and the energy dissipation power of damping in vibration is used to evaluate the mixture, which is obviously superior to AC and SMA.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414;U416.217

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