应用TRITOP系统对钢桥构件测试的有效性研究

发布时间：2018-06-17 15:05

本文选题：TRITOP系统 + 测试方法　；参考：《内蒙古科技大学》2014年硕士论文

【摘要】：近些年，我国钢桥制造业在计算机应用、先进设备的引进上有了巨大的进步和提高。为达到进一步探索钢桥实现数字模拟预拼装可能性的目的，本文采用德国GOM公司研发的TRITOP高精度光学三维定位测量系统，，测试预拼装钢桥构件，分析该系统的有效性。本文首先应用TRITOP系统对常用的钢桥构件在实验室中进行测试研究，提出布点方案、拍照方案和TRITOP的计算方法等理论依据和测试方法，再借助中铁山桥集团正在秦皇岛山海关桥梁工厂进行预拼装的某钢桁梁桥的一个节段（工字梁G3、G4、箱型梁A1Y和节点板E2）进行实地测试研究，分析测试数据的统计特征，研究测点数量对精度分析结果的影响并进行测点优化的分析，以期利用较少且合理的测点获得完整有效的测试数据。测试结果表明：本文提出的布点方案、拍照方案和TRITOP的计算方法是有效的；从桥梁工厂测试4根构件数据的正态分布图可以看出测试数据布点对测试精度起着重要作用，测试构件制作精度主要来自切割、板厚和焊接变形的影响；考虑到标志点的作用和测试数据的离散情况，非编码点的布置数量应不少于编码点的布置数量，测点布置数量可以通过简化同样取得好的效果，当采用4、5、6个测点数量进行计算时，测试结果相比于整体样本期望偏差较大，建议采用7~10个测点进行布置；现场测试钢桥构件制作精度和孔群间距（含横向、纵向的偏移值）等检测项目符合规范要求。
[Abstract]:In recent years, the steel bridge manufacturing industry in our country has made great progress and improvement in the application of computer and the introduction of advanced equipment. In order to further explore the possibility of digital analog pre-assembly of steel bridges, this paper uses TRITOP high-precision optical three-dimensional positioning and measurement system developed by GOM Company of Germany to test the pre-assembled steel bridge components and analyze the effectiveness of the system. In this paper, we first use TRITOP system to test the commonly used steel bridge components in the laboratory, and put forward the theoretical basis and test method, such as placement scheme, photograph plan and TRITOP calculation method, etc. Then with the help of a segment of a steel truss bridge (I-beam G3G4, box girder A1Y and joint plate E2), which is being pre-assembled by Zhongtieshanqiao Group in Qinhuangdao Shanhaiguan Bridge Factory, the statistical characteristics of the test data are analyzed. The effect of the number of measuring points on the precision analysis results is studied and the optimization analysis of measuring points is carried out in order to obtain complete and effective test data by using fewer and more reasonable measuring points. The test results show that the proposed layout scheme, photographing scheme and TRITOP calculation method are effective, and from the normal distribution diagram of the test data of four components in the bridge factory, it can be seen that the test data placement plays an important role in the test accuracy. The fabrication accuracy of test components is mainly due to the effects of cutting, plate thickness and welding deformation; considering the function of mark points and the dispersion of test data, the number of uncoded points should not be less than the number of coding points, Good results can be obtained by simplifying the number of measuring points. When the number of 4 or 6 test points is calculated, the result of test is larger than the expected deviation of the whole sample, so it is suggested that 7 ~ 10 test points should be used for layout. In situ test of steel bridge component fabrication accuracy and hole group spacing (including horizontal and longitudinal offset) and other testing items meet the requirements of the specification.
【学位授予单位】：内蒙古科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.36;U446

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