A novel ladder form rib-ring type of spherical reticulated shell is put forward in the present paper. There are only circular members on the upper chord and only radial members on the lower chord. A triangular shear-force key composed of a horizontal and a vertical paunch bar connects the upper and the lower chord. Automatically parametric modeling of their lattices is given out in details. Structural performance of this kind of reticulated shells are analyzed and summarized. Comparison with corresponding single-layer reticulated shells is also carried out. Ladder form rib-ring type of reticulated shells in application to a practical roof system of Jiangyin swimming arena comes true.
This study established a one-dimensional dynamic simulation model for a supercritical carbon dioxide pipeline containing impurities. By using C++ programming and numerical solution technology, the hydraulic and thermal properties of the pipeline during slow transient operating conditions can be calculated, enabling dynamic monitoring of the hydraulic and thermal properties along the pipeline during the transportation of impurities in supercritical carbon dioxide. The comparison and verification between the current authoritative engineering simulation software OLGA and this model indicate that the model has certain engineering application value and has reference significance for the development of domestic simulation software.
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