|
In recent years, with the rapid development of the construction industry, construction technology level is also rising. Scaffolding is an important tool construction, and new types of scaffolding in construction has been more and more applications, new technologies, new technology constantly emerging. The lashing steel tubular scaffold is a novel scaffolding structure, evolved on the basis of traditional Chinese bamboo scaffolding. Alternative bamboo light steel banding with alternative bamboo strips, with a special chemical fiber, the pole and the horizontal bar by lashing the formation of the node constitute the scaffolding structure, light weight, erection and dismantling convenient use of flexible. The lashing steel tubular scaffolding structure absorbed the advantages of traditional bamboo scaffolding banding process is convenient, abandoned bamboo material shortcomings, the use of lightweight steel pipe as a structural member of the structure carrying capacity significantly increased, is a combination of tradition and innovation. But at this time, its structural stress characteristics will change, need for studies to determine its structural performance. In this paper, a method of combining experimental and theoretical analysis based on the structural characteristics of the the lashing steel tubular scaffolding, to study it. Experiments were conducted scaffold components and lashing with mechanical properties test, lashing node rotational stiffness test, lashing-node anti-slip performance test, scaffolding aircraft bearing capacity test; theoretical analysis of numerical simulation using large general-purpose finite element software Ansys calculations. This study: 1. Study the mechanical properties of the scaffolding pole, horizontal bar and lashing with. Force performance of semi-rigid node of scaffolding. 3 by aircraft test experimental phenomena, load - stress curve, load - displacement curves and structural damage to the form of test results to determine the buckling modes and ultimate bearing capacity of the structure of the scaffold. 4 large general-purpose finite element software Ansys numerical simulation on the the scaffolding entire frame calculated ultimate strength and failure mode analysis of the scaffolding structure, Ansys theoretical analysis and experimental results are compared with mutual authentication. 5 by comparing the results of experimental and theoretical analysis, analysis of scaffolding nodes rotational stiffness, cross bracing, and even pieces of the wall, the structural arrangement of factors scaffolding structure by force performance. 6 based on experimental studies and theoretical analysis results, recommended a simple and practical design calculation methods of lashing-steel scaffolding. 7 proposed improvements and the need to continue in-depth study of the topic.
|