The invention discloses a vault deflection control method in
catenary arch
springing increased cross-section reinforcement construction. Basic parameter values of a structure are obtained according toa design drawing; a cable is adopted to approximately replace a
catenary; the deflection of the section of a vault when a unit force acts upon any section of a
catenary arch is calculated; the deflection of the vault at the moment is calculated by using a reinforcement section length, which is determined by a construction scheme, and the cubic amount of desired concrete; and the deflection of thevault which is actually measured on site is compared with the calculated deflection. The vault deflection control method in the catenary arch
springing increased cross-section reinforcement construction is used for constant section catenary hingeless arches. Compared with the existing most common
finite element method, the vault deflection control method in the catenary arch
springing increased cross-section reinforcement construction has the advantages that real-
time control can be performed on the construction site under the coordination of a scientific
calculator; the operation is simple;the realization is easy; and defects that the calculation time is long, parameters cannot be directly obtained to affect rules and so on due to the adoption of the existing commonly used
finite element method are overcome. And meanwhile, according to the vault deflection control method in the catenary arch springing increased cross-section reinforcement construction, an
analytic expression directly reflects the mechanical relation between the vault deflection value and each parameter of the structure to be beneficial for engineers to master the reinforcement design and the construction scheme.