基于灰色理论的某环保局基坑变形监测的数据处理与分析.doc

山东科技大学泰山科技学院
本科毕业设计(论文)
题目基于灰色理论的某环保局基坑
变形监测的数据处理与分析
系部名称资源与土木工程系
专业班级测绘工程2班
学生姓名 xxxxxx
学号惺惺惜惺惺x
指导教师 xxxx
摘要
由于基坑的变形将对基坑自身稳定性和周边环境产生不同程度的影响,因此,在基坑开挖过程中应非常重视变形监测工作。但目前还没有一种成熟的方法计算基坑周围土体的位移量,岩土工程师在进行设计时通常只能借助过去的经验和工程类比,并在施工过程中通过对现场变形观测值与设计时的预测值进行对比,以验证支护结构的合理性,指导基坑开挖及支护工程施工,必要时对设计方案和方法进行调整。由于基坑支护结构的复杂,力学机制的不清晰以及影响因素的多元化,意味着基坑的变形不能以某一种原因或因素来预测其后的变形规律此外,影响基坑稳定的某些因素如基坑降水、自然降雨等都是未知的。据此可知,基坑工程是部分信息已知、部分信息未知的灰色系统,施工监测一般难以确定变形的发展趋势及是否需采取加固处理措施。为了根据变形监测数据进行动态设计及信息化施工,本研究拟建立灰色系统模型对基坑变形进行模拟、分析并预测其发展趋势。
关键词:灰色系统理论;基坑;变形监测;灰模型;数据;处理与分析
Abstract
Due to deformation of foundation pit for foundation pit its stability and the surrounding environment have different degrees of impact, therefore, should be attached great importance in the process of foundation pit excavation deformation monitoring work. But there is no a mature method of calculation of displacement of soil around the foundation pit, geotechnical engineers in the design usually only with the aid of experience and engineering analogy, and deformation in construction process based on site observation parison between the predicted value and the design of retaining structure to verify the rationality of the excavation and support construction, when it is necessary to adjust design and methods. Due to plex foundation pit supporting structure, mechanics mechanism is not clear and the influence factors of diversification, means that the deformation of foundation pit can't to a certain reasons or factors to predict deformation law. In addition, the influence factors to the stability of foundation pit, such as foundation pit precipitation, natural rainfall and so on all is unknown. Accordingly, the foundation pit engineering is part of the information known, the partial information unknown gray system, the construction monitoring of the generally difficult to determine whether the deformation and the development trend of reinforcement measures. In order to according to the deformation monitoring data for dynam