A Static Test Method for Indirect Measurement of Deformation Under Controlled Loads
Active Publication Date: 2022-03-11
JIANGXI UNIV OF SCI & TECH
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Problems solved by technology
[0003] To sum up, the problem existing in the existing technology is that it is very difficult to directly measure the structural deformation caused by complex control loads, but at present, there is no method for indirectly measuring the static deformation of structures at home and abroad.
Method used
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[0019] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0020] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] Such as figure 1 As shown, the static test method for indirectly measuring the deformation generated by the control load provided by the embodiment of the present invention includes the following steps:
[0022] S101: Design the finite element model according to the structure, calculate the dynamic modes of each order, set the control load, and optimize the simple load by genetic algorithm;
[0023] S102: According to the deformation generated by the simple load, the deformati...
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The invention belongs to the technical field of structural static testing and discloses a static testing method for indirect measurement of deformation generated by control loads. Under a given load pattern, the static deformation of a structure can always be approximated as a linear combination of a few identical modes (that is, contributing modes), and the impact of structural parameter changes on static deformation is mainly reflected in the linear combination of contributing modes Therefore, the monitoring problem of structural static deformation can be transformed into the measurement problem of contributing mode combination coefficient. By measuring the deformation caused by some simple loads that meet certain conditions, the contribution mode combination coefficient corresponding to the complex control load can be calculated indirectly, so as to improve the test efficiency of the deformation caused by the control load. A Geiger cable dome calculation example verifies the accuracy of the approximate modal expression for static deformation and the feasibility of indirect measurement of deformation caused by control loads based on static tests with simple loads.
Description
technical field [0001] The invention belongs to the technical field of structural static testing, in particular to a static testing method for indirect measurement of deformation generated by controlled loads. Background technique [0002] The present invention is applicable to all types of engineering structures, but the background technology description is made by taking the cable-strut tension structure as an example. The cable-strut tension structure is a new type of large-span space structure that has emerged in recent years, and is widely used in landmark buildings such as stadiums. This type of structure is only composed of cables and struts, and typical systems include tensegrity, cable dome, and cable truss. The mechanism of its stiffness is different from that of the traditional structure, and it relies on the geometric stiffness contributed by the prestress and the linear elastic stiffness contributed by the material to provide structural stiffness. Due to the i...
Claims
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IPC IPC(8): G06F30/23G06F30/27G06F30/13G06N3/12G06F119/14
CPCG06N3/126G06F30/13G06F2119/06G06F30/23
Inventor 伍晓顺徐思东马俊陈剑毅冯隆琨程金霞杨辉
Owner JIANGXI UNIV OF SCI & TECH