Statistical Characteristics Of High Formwork Support’s Ultimate Bearing Capacity And A Design Method Based On Reliability

In recent years, high Formwork supports collapse frequently. At the same time of paying a painful price, People have a higher request for high Formwork support and pay more attention to it. This paper is based on the finite element analysis. It also makes use of reliability theory to conduct study. It proposes a new design method, which ensures the high Formwork supports safe and reliable. This has an important theoretical value and engineering significance in this field. The main results of this study are as follows:(1) Through reasonable processing, finite element model is built by ANSYS finite element analysis software. Accuracy of the finite element model is verified by comparing it to actual experiments. This proved the finite element model is accurate enough for the following research.(2) Measurement of some erection parameters are conducted in construction site. Probability distribution and statistical parameters are given, so it is accessible for the following calculation. Test date of right-angle coupler’s stiffness is utilized as foundation; a new double linear model is put forward. It is about the relationship between torsional moment and rotational displacement.(3) Discussion of erection parameters’influence on the ultimate bearing capacity is carried out. This makes it clear about the nature of the ultimate bearing capacity of high formwork supports.(4) Through reliability theory, a new design method is put out. Specific partial safety factors for resistance and load are given. This provides convenience for practical design.(5) Comparation among the new design method, Chinese standards and British standards is discussed. The key deficiency in two standards is pointed out.