Study the deformation and stress of long span prestressed thin shell ferro-cement aqueducts

Abstract

   Long-span prestressed ferrocement aqueducts is a thin shell structurere reinforced by vertical ribs, transverse ribs and struts, when the design requires internal force with high precision, need to analyze the space thin shell problem. However, the analysis of the internal force of the body aqueduct based on the fundamental differential equations of space thin shell theory, it is almost impossible to find the exact solution, often used finite element method. However, it requires the user to have a certain understanding of shell theory, finite element method and application software. Based on CM-XMLT-UST Dedicated Program in ANSYS software created by the author, have conducted hand calculation for a series of problems and found that for prestressed ferrocement aqueducts with long-span, when the ratio of the length/cross-sectional height L/H ≥ 10, calculate by the theory of beams also achieve the necessary precision.