The Transfer Rule Analysis Of Cuplok Scaffold And Defect Analysis

With rapid development of Chinese economy in recent years, various of flyover bridges, metros and tall buildings are well constructed. As one of the new scaffolds cuplok scaffold is very popular among many constructive works. However,unreasonable conducting, original defects of construction elements, eccentric loading,complex stress of scaffold and undefined of force transmitting in construction sites make serious accidents occur constantly, which reads to huge financial losses and too many innocent worker’s death. Therefore, it is a great urgency to have research on the analysis of scaffold defects, the transferring process of force and the key stress points of the whole system. Meanwhile, effective, accurate and complete monitoring methods are in great need by a great number of users.In this paper, based on the project of metro line 2 in He fei, we have an experiment on the bearing capacity of cuplok scaffold in the lab of An hui Province.This experiment researched on the transferring ways and laws of the stress of upright and horizontal poles under the upright stress of cuplok scaffold,the character of nodes connection and then found the bar which bears the maximum stress in the support framework.. In addition, in view of the test stand, combined with the feature of support node force, this article also use analysis software ANSYS to establish a reasonable analysis model, the model nodes adopts the hinged method modeling,model size according to the proportion of 1:1.We had experiments about the liner analysis and the nonlinear analysis, and then test the results of the analysis with the ANSYS analysis results: At last we made some conclusion about the stress of upright and horizontal poles under the upright stress and the character of nodes connection.At the same time, thesis had a real-time monitoring to the ceiling of the main structure of the underground floor and the stress of same scaffolds while the workers were casting the side wall. Then I continued to use the software ANSYS to establish the actual project bear the vertical load and when the roof concrete pouring in the lateral wall of casting is the level of load model, the establishment of the vertical load of roof for concrete pouring of the model, the research analyzes the force of the supporting system of rods and nodes, find the weak spot of the structure, andcompared with scaffolding above test and ANSYS simulation analysis results, which shows that the scaffold in the construction of the problem, pay attention to during the process of building the conclusion of the study for future bowl of the site erection of the support system and provide reference value for the construction monitoring. The conclusions of the research can offer some reference for the use of cuplok support framework in the future. While constructing the model of horizontal stress of side wall casting, I mainly analyzed the situation when speed of casting, horizontal bracing and the use of rigid connection and knuckle joint.Finally, according to the 4 x 4 cuplok scaffold support framework stress experiment and the scaffolds users by the construction sites of the metro line2 in Hefei. We checked the situation the lab and the specification and set up of the scaffolds. We found some problems like outside diameter negative deviation,wall thickness, outer diameter, steel tube bending and erection of unqualified problem,then to test and scaffolding supporting system under the condition of the calculation of strength, stiffness and stability, and the scaffolds, construction defects in itself is not reasonable and eccentric loading conditions and the relevant comparison calculation, by calculating the result of unreasonable construction, the initial defects and eccentric loading on its bearing capacity, in many cases, there is a lot of adverse effects. Unreasonable according to the construction of support at the same time, the initial defects and eccentric load on the bearing capacity of its adverse effects, and put forward the selection of materials for these defects or inadequate set-up process and construction safety control suggestions and support system to calculate optimization suggestions.