Basic Principle Of Steel Structure Construction Process Monitoring

Basic principle of steel structure construction process monitoring

In the whole process of steel structure construction, the monitoring system plays an important role. It mainly uses modern monitoring equipment to track the displacement and stress changes of key parts in the process of structure construction, as well as the records of vibration, temperature and so on. Through the information collected in real time, judge whether the actual state of the structure is consistent with the design goal, so as to make timely adjustment and ensure the accuracy and safety of structural construction.

2.1.1 geometric deformation monitoring

Geometric deformation monitoring during construction is to measure the target points of the monitored object or object (hereinafter referred to as deformation body) to determine the spatial position of the deformation body and the change characteristics of its internal shape with time. Deformation monitoring is mainly used to monitor the changes in the three-dimensional geometric form of the measured deformation body for establishing the benchmark data through the measuring instruments. The common measuring instruments include: level, theodolite, laser rangefinder, total station and photogrammetric equipment. These conventional ground measurement methods have mature technology, good universality, accuracy can also meet the needs of conventional monitoring, and can monitor the deformation information and trend of the deformation body, However, the disadvantages are also very obvious. For example, the workload of field operation is large, it is easy to be disturbed by the construction surface and can not meet the requirements of dynamic, continuous and remote monitoring. With the development of electronic technology, automatic control technology, laser technology, spatial positioning technology and remote communication technology, modern instruments represented by GPS technology, laser three-dimensional scanner and measuring intelligent robot are combined with the current communication network, Forming an all-weather continuous automatic real-time monitoring system plays an important role in deformation monitoring. At the same time, it also represents the development trend of deformation monitoring, which greatly improves the monitoring efficiency and the acquisition ability of external deformation monitoring data.