阿拉尔～和田沙漠公路路面使用性能的研究.pdf

I阿拉尔~和田沙漠公路路面使用性能研究摘要沙漠公路路面使用性能的研究是探讨如何客观、宏观、全面、合理的评价沙漠公路的实用性,为今后修筑沙漠公路提供客观的参考依据。根据沙漠公路路面结构特点并结合路面使用情况,从路面结构性能和路面功能性能两方面出发对阿和沙漠公路的路面使用性能进行分析研究。其中路面结构性能主要从沙基的稳定性上进行分析,本文对沙基稳定性的判断采用了沙基回弹模量与路面观测的沉降量相结合的方法。因此着重分析沙基回弹模量、路面沉降量的影响因素、特征。其次,根据各层回弹模量的联系以及调查时发现的问题,讨论了如何进一步改进沙漠公路的路面结构形式。在路面功能性方面,由于行驶舒适性和行驶安全性较好,因此着重分析了情况相对比较差的路面破损产生的类型、原因。同时,还对该公路的交通轴载情况进行了分析。通过现场调查所得的数据,对其进行了基于规范的路面使用性能综合评价,这种评价方法是以路面破损状况、路面结构强度、路面平整度、路面抗滑能力四个方面作为分项评价指标,综合评价是对这四个指标赋权,用加权法计算得出。但是对于我国沙漠地区公路,尤其对以风积沙作为道路垫层材料的公路而言,这种评价方法没有考虑到沙漠地区的环境特点和沙漠公路路面结构的特殊性,因此,在本文最后的方法探讨中,将原有的四个评价指标增加到六个,所增加的两指标就是文中提到的沙基稳定性和交通轴载,并建立两种新的评价模型,即基于灰色系统理论建立的灰色评价模型和利用可拓法建立物元模型,对路面综合使用性能进行评价。关键词:沙漠公路;使用性能;路面结构;评价模型IIIStudy on Road Surface of Using Capability on Alaer~Hetian Desert Highway Abstract The research on the road surface using performance of desert highway is to discuss how to evaluate the practicability of desert highway in an objective, complete and reasonable way. Bases pavement structure characteristic of desert highway and its using status to analyse road surface of using capability of desert highway, which from Alaer to Hetian. The analysis has two aspects: pavement structure capability and pavement function capability. Stability of sand roadbed is important element to analyse capability of pavement structure, then modulus of esilience of sand roadbed and sedimentation of road surface are treated as two aspects of aeolian sand roadbed stability, because the two subentries each has his strong point plement to each other during token sand roadbed stability. Secondly, the paper based on modulus of esilience and faults to talking how to improve on pavement structure model. About capability of pavement function, dilapidation of road surface is regarded as keystone to investigate its causation and type. Then, status of traffic absorbing load of the desert highway is analysed. By investigate datas, to appraise the road surface using performance of the desert highway. Condition of disrepair, structural intensity, level limit