We adopted the double-layer space grid, which is of advantage to hanging load and openning window.

DPF failure diagnosis is carried out by on-board smoke hanging test, to verify the feasibility of this diagnosis strategy, no-load, medium load and full-load test are respectively carried out.

Take rhombic hanging basket of building a highway rigid frame bridge for example, analysis of rhombic hanging basket deformation theory, guide the basket pre-pressure test by basket load simulation.