Truss deformation value measurement method

Abstract

The present invention discloses a truss deformation value measurement method. The method comprises the following steps of: prior to fixing and erection, setting observation points at preset positionson trusses, and installing reflector plates at the observation points; arranging a total station at a preset point, obtaining the standard elevation value of one truss at each measuring point, observing the center positions of the reflector plates through the total station, and obtaining the elevation values of the reflector plates at the center positions; and after the temporary supports of the trusses are erected, measuring the vertical displacement value of the trusses, comparing the center standard elevation values of the same position at different time, and obtaining the deformation values of the trusses. The truss deformation value measurement method performs regular and accurate deformation measurement of the trusses, and performs proper correction of the trusses according to the deformation values obtained through measurement to ensure the good performance effect of the trusses in the whole engineering project, provide a stable process factors for the progress of the engineering and provide a safe construction environment for constructors.

Description

technical field [0001] The invention relates to the field of engineering measurement, in particular to a method for measuring the deformation value of a truss. Background technique [0002] A truss is a structure made up of members connected to each other by hinges at both ends. The truss is composed of straight rods and generally has a plane or space structure of triangular units. The truss members mainly bear axial tension or pressure, so that the strength of the material can be fully utilized. When the span is large, it can save materials compared with solid web beams, reduce self-weight and Increasing stiffness is often used in some large-scale engineering projects to build buildings suitable for construction in order to provide a good environment. However, in many cases, due to the influence of different factors, such as load, displacement and environment, etc. , resulting in deformation not allowed by the design, resulting in a decrease in its bearing capacity, poor s...

AI Technical Summary

Problems solved by technology

The truss is composed of straight rods and generally has a plane or space structure of triangular units. The truss members mainly bear axial tension or pressure, so that the strength of the material can be fully utilized. When the span is large, it can save materials compared with solid web beams, reduce self-weight and Increasing stiffness is often used in some large-scale engineering projects to build buildings suitable for construction in order to provide a good environment. However, in many cases, due to the influence of different factors, such as load, displacement and environment, etc. , resulting in deformation not allowed by the design, resulting in a decrease in its bearing capacity, poor stability, or even collapse. On the one hand, it will threaten personal safety; on the other hand, it will cause unnecessary losses and delay the progress of the project. Therefore, for Periodic inspection and adjustment of the truss is necessary

Images