Research on Characteristic Value for Variable Material Load Before Concrete Pouring
Variable material load(VML)before concrete pouring is the load from construction materials stacked on formworks.Because of extremely uneven load distribution,current probabilistic models cannot describe this kind of load accurately.Based on the results of previous project load survey,the characteristics of VML were analyzed and sampling period for the most unfavorable load was determined.According to the influence surface for axial force of formwork support system,a new non-stationary binomial random field was proposed to describe VML.According to the load survey results of 20 projects,the statistical parameters of the random field are given according to different construction conditions.Based on the above results,the standard values of VML are provided.
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