高速公路改扩建工程沉降观测及评估技术研究

发布时间：2018-01-25 11:32

本文关键词： 改扩建沉降观测 VB 平差软件评估系统沉降预测　出处：《石家庄铁道大学》2014年硕士论文　论文类型：学位论文

【摘要】：沉降指标是检验高速公路地基加固及路基填筑质量的重要指标之一,实施沉降观测是获得高速公路沉降情况最直观的、最准确的方法。在高速公路改扩建工程中,新旧路基、路面、桥梁的拼接质量决定着工程的成败,为保证加宽后路面性能满足路用功能,避免出现路基塌陷、路面开裂,在路基加宽及桥梁加宽施工过程及运行期间对新老路基路面和桥梁进行沉降变形观测是必要的。本研究为京港澳高速公路京石段改扩建工程设计了专门的沉降观测方案,在沉降观测中应用新型沉降观测元件,为新型测试元件设计了操作方法和数据处理方法,对改扩建工程各沉降指标的取值进行研究并确定使用于本工程的总沉降、工后沉降、拼接部不均匀沉降和施工沉降速率等沉降指标,沉降观测方案已经在工程中实施。为方便沉降观测工作的数据处理、规范数据处理方法和数据输出格式,使用Visual Basic高级编程语言编写沉降观测平差软件,软件专为改扩建工程设计,适用于沉降观测方案中规定的水准测量、沉降杯测量和U型剖面管等观测方法的数据平差。论文为改扩建工程设计了路基路面评估方法和软件,建立了沉降观测评估系统,提供进行沉降观测数据工后沉降和横坡率预测的方法,统一各项图表的输出格式,提供了快速处理大量实测沉降数据并得到高速公路评估所需要的所有指标的方法。
[Abstract]:Settlement index is one of the most important indexes to test the quality of expressway foundation reinforcement and subgrade filling, and the settlement observation is the most intuitionistic way to obtain the expressway settlement. The most accurate method. In the expressway reconstruction and expansion project, the quality of the new and old subgrade, pavement, bridge splicing determines the success or failure of the project, in order to ensure that the performance of the road after widening to meet the road function, to avoid subgrade collapse. It is necessary to observe the settlement and deformation of new and old roadbed and bridge during the construction process and operation period of roadbed widening and bridge widening. This study designed a special settlement observation scheme for the Beijing-HongKong-Macao Expressway Jingshi section reconstruction and extension project, and applied a new settlement observation element in the settlement observation. The operation method and data processing method are designed for the new test element. The value of each settlement index of the reconstruction and extension project is studied and the total settlement and post-construction settlement used in this project are determined. The settlement index such as uneven settlement and construction settlement rate have been implemented in the project. In order to facilitate the data processing of settlement observation, and to standardize the data processing method and data output format, the settlement observation adjustment software is compiled with Visual Basic advanced programming language. The software is specially designed for the reconstruction and extension project. It is suitable for the data adjustment of leveling, settlement cup measurement and U-shaped section tube, which are stipulated in the settlement observation scheme. In this paper, the evaluation method and software of roadbed and pavement are designed for the reconstruction and extension project, and the settlement observation and evaluation system is established, which provides the method for predicting the settlement and lateral slope rate after the settlement observation data. By unifying the output format of each chart, it provides a method to deal with a large number of measured settlement data quickly and to obtain all the indexes needed for highway evaluation.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.8

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