Pipeline Design Based On Strain Analysis Under The Condition Of Collapsible Loess

The buried pipeline project of midwest in China cuts through the area where landform and geology condition are complex,the loess collapse has a gigantic threat to construction and work of pipeline.Keep the pipeline under the special geological disasters be safe is one of the major problems which needs to be resolved.Obviously,a research about the impact of pipeline under the condition of collapsible loess has important significant.The report was based on the announced document of impact of collapse over pipeline safety.It is a study of the particularity of the load on the area of collapsible loess.Based on the analysis of the loess nature collapsibility and macrostructure,the calculation method of the realization of deformation under the condition of the loess area has been given.Standards of D-P is one of the soil failure criterion to conduct soil failture evaluation.Considering the means of numerical simulation to solve the problem of soil stability and failure mechanism under the condition of collapsible loess.Most studies of loess area buried pipeline in traditional focus on the pipeline itself or load conditions to solve an engineering problem which are lack of general engineering significance.In this paper,learning at home and abroad ahead to design of buried pipelines strain across the loess area research methods of strain-based design,consider the rules of the soil wet collapsible loess area starting mechanism,the establishment of a pipe-soil interaction the three-dimensional nonlinear mechanical analysis model by loess area buried pipeline boundary conditions,displacement load,using nonlinear solution method,deformation and strain analysis pipeline for pipeline safety collapsible loess to evaluate and explore the law.This paper is writen to analysis the pipeline crossing collapsible reliability by Monte Carlo method,describe the basic types of the Monte Carlo method,random number generation,probability distribution type,the number of samples,etc.,and to study the various factors combine ANSYS software pipeline strain impact on pipeline safety evaluation.