The Load Survey And Statistical Analysis Of Shaft-tower Structures

Shaft tower is important building ground industrial building structures in the mine.The shafthoist hall floor live load impact on the economy and rationality of the structure. In recentyears,the live loads of the hoist hall whose diameter is not more than4.0m set by the nationalstardars do not meet the need of design in mining industry with the development of miningindustry and the scale of mine becomes larger gradually.It is necessary that shaft hoist hall floorlive load were analyzed to use the diameter more than4.0m in order to guarantee the economyand rationality of shaft-tower structure,it can provide a scientific theory support for designer.Therefore, research on the value of the shaft hoist hall floor live load and reliability, which havegreat theoretical sense and application value of projects.In this paper,mines in neimeng and anhui has carried on the spot representative,the data weregathered in the shaft tower design units and hoist design uints.it can be divided into four groupsaccording to the hoist diameter and the load distribution,after that, using the method of the flooruniformly distributed load equivalent to floor distributed live load from local variable load，andmaking use the method of mathematical statistics analysis, probability distributions and statisticalparameters of installation area and maintenance area of shaft hoist hall floor live load is studied.Thereby the probability distributed models and main parameters of installation area andmaintenance area of shaft hoist hall floor live load are obtained at design reference period T=50years and T=100years. Further, installation area and maintenance area of shaft hoist hall floor’scharacteristic value of variable load at design reference period T=50years and T=100years isadvanced. Last based on which, using the method of check computations point analyzed thereliability index of shaft hoist hall floor,the results showed that meet the specified requirements,for these structure’s design of rational provided technical support.The above results have a certain reference value for the design of shaft-tower structure,andalso have important implications for the mining engineering design standard. The results can be used for reference in the actual project design.