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大型构筑物主体结构的形变测量具有重要理论意义和实用价值。某构筑物主体经过基础沉降测量表明该构筑物存在明显不均匀沉降现象,造成结构主体一定程度倾斜变形。为此,我们采用高精度全站仪极坐标观测技术对该构筑物主体进行了长达6年的形变量跟踪观测与分析。本文给出了构筑物主体形变测量的原理与方法,并推导了形变矢量和整体倾斜角相应的计算公式,通过多项式拟合方法对形变量进行数学建模、分析总结形变规律并预测形变发展趋势。最后,利用对某构筑物2000年至2005年的形变监测数据做了形变规律分析,得出了有益的结论。
The deformation measurement of the main structure of large structures has important theoretical significance and practical value. The measurement of foundation settlement of a structure body shows that there is obvious uneven settlement of the structure, causing the structure body to tilt to a certain degree. For this reason, we have used the high-precision total station polar coordinate observation technology to track and analyze the deformation of the main body of the structure for up to 6 years. In this paper, the principle and method of deformation measurement of structures are given, and corresponding formulas of deformation vector and overall tilt angle are deduced. Mathematical modeling of deformation is made by polynomial fitting method, and the deformation rules are analyzed and the trend of deformation development is predicted. Finally, the deformation analysis of the deformation monitoring data of a certain structure from 2000 to 2005 has been done, and the useful conclusions have been drawn.