A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Calculated estimate of the strength of large-diameter high-pressure conduits at the three Gorges hydro development
Conclusions The design of the steel-reinforced concrete pressure conduit was checked for four calculated cross sections: I-I, II-II, III-III, and IV-IV. The calculated check was made in accordance with Russian standards by analytical and numerical methods. The usual load combination of the operating period was taken as the main variant.The calculations showed that the strength condition of the conduit is fulfilled; in this case there is a considerable safety factor with respect to the shell and reinforcement, which attests to the degree of reliability and safety.Calculations of stresses in the steel shell and reinforcement by the FEM were made on the bases of finite-element models of cross sections with consideration of the formation of cracks in them. The calculated stresses do not exceed the strength of the steel shell and reinforcement.Conduit cross sections under temperature effects were calculated. Annual variations of the temperatures of the air, water, concrete of the dam, etc., were taken as the loads. The calculations showed that thermal stresses in the steel shell and reinforcement increase by not more than 24 MPa.A check of the design of the steel-reinforced concrete conduit showed complete fulfillment of the strength condition and high reliability of the design. The design of the steel-reinforced concrete conduits is recommended for realization when constructing structure of the Three Gorges hydro development.
Calculated estimate of the strength of large-diameter high-pressure conduits at the three Gorges hydro development
Conclusions The design of the steel-reinforced concrete pressure conduit was checked for four calculated cross sections: I-I, II-II, III-III, and IV-IV. The calculated check was made in accordance with Russian standards by analytical and numerical methods. The usual load combination of the operating period was taken as the main variant.The calculations showed that the strength condition of the conduit is fulfilled; in this case there is a considerable safety factor with respect to the shell and reinforcement, which attests to the degree of reliability and safety.Calculations of stresses in the steel shell and reinforcement by the FEM were made on the bases of finite-element models of cross sections with consideration of the formation of cracks in them. The calculated stresses do not exceed the strength of the steel shell and reinforcement.Conduit cross sections under temperature effects were calculated. Annual variations of the temperatures of the air, water, concrete of the dam, etc., were taken as the loads. The calculations showed that thermal stresses in the steel shell and reinforcement increase by not more than 24 MPa.A check of the design of the steel-reinforced concrete conduit showed complete fulfillment of the strength condition and high reliability of the design. The design of the steel-reinforced concrete conduits is recommended for realization when constructing structure of the Three Gorges hydro development.
Calculated estimate of the strength of large-diameter high-pressure conduits at the three Gorges hydro development
Rubin, O. D. (author) / Lisichkin, S. E. (author) / Nikolaev, B. A. (author) / Lyapin, O. B. (author)
1999
Article (Journal)
English
BKL:
56.30
Wasserbau
Local classification TIB:
770/6550/8000
| British Library Online Contents | 1999
Regulator and shut-off valves for high-pressure conduits of large diameter
| Engineering Index Backfile | 1931
Determination of the diameter of conical pressure conduits
| Engineering Index Backfile | 1922
The worlds biggest hydro complex - China Three Gorges Project
| HENRY – Federal Waterways Engineering and Research Institute (BAW) | 2014