Finite element analysis of cast iron spillway gate wheels

Polyzois, Dimos; Muzyczka, W.J.; Garroni, J.D.

doi:10.1016/0045-7949(94)00422-y

Cited by 2 publications

(5 citation statements)

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“…This, however, is the maximum elastic shearing stress suggested by Skinner for wrought steel wheels. Polyzois and Muzyczka established the following expression for cast iron:

V_{u} = 2.82 \cdot BHN - 282 \leq 564 (normalMPa) .

…”

Section: Current Design Practicementioning

confidence: 99%

“…The term fixed‐wheel gate applies to a rectangular gate with wheels mounted on the gate, as contrasted with an earlier type using roller chains independent of the gate leaf . The hydrostatic load is transferred through a skin plate, onto a structural system of diaphragms, horizontal girders, and vertical end girders that are supported on wheels . The water thrust on the gate is transferred by the wheels to the roller paths in the gate slots, fastened to track bases embedded in concrete of the structure, and the wheels rotate on the track as the gate is operated.…”

Section: Introductionmentioning

confidence: 99%

“…These loads can be as much as two to three times larger as the original design loadings. Failure of one wheel could jeopardize the overall operation of the gate …”

Section: Introductionmentioning

confidence: 99%

“…1 The hydrostatic load is transferred through a skin plate, onto a structural system of diaphragms, horizontal girders, and vertical end girders that are supported on wheels. 2 The water thrust on the gate is transferred by the wheels to the roller paths in the gate slots, fastened to track bases embedded in concrete of the structure, and the wheels rotate on the track as the gate is operated. The advantage of providing wheels is that the frictional forces to be surmounted during gate operation are relatively of much smaller magnitude as compared to sliding friction in slide gates and enables the gate to be self-closing under gravity without a push force from the hoist.…”

Section: Introductionmentioning

confidence: 99%

“…Failure of one wheel could jeopardize the overall operation of the gate. 2 While the design of various gate structural components is carried out based on established national standards, the design of gate rollers involves the use of an empirical formula, based on Brinell hardness, to obtain the initial roller diameter and the tread width. 3 Tread surface Hertzian contact stresses and subsurface shear stresses are computed using methods developed by Thomas and Hoersch.…”

Section: Introductionmentioning

confidence: 99%

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Experimental evaluation of the fatigue life of hydraulic gate cast iron rollers

Lashari

Polyzois

2020

Engineering Reports

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Fixed‐wheel gates with wheels mounted on both sides that roll on roller path plates are used in both emergency intake gates and spillway gates in hydrogenerating stations. Environmental corrosion along with high wheel loads cause differences in the profile of the roller path surface. Combined with the relatively high torsional stiffness of the gate end girders, a condition of wheel load redistribution occurs where some wheels are relieved of load while others are loaded beyond their maximum design values. Failure of one wheel could jeopardize the overall operation of the gate. Furthermore, frequent operation of these gates result in changes in the stress profile in both wheels and roller paths that, potentially, could lead to failure. Currently, design guidelines for gate wheels and roller paths do not consider the fatigue life of these elements. Research‐based evidence is provided to support changes to these guidelines.

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“…This, however, is the maximum elastic shearing stress suggested by Skinner for wrought steel wheels. Polyzois and Muzyczka established the following expression for cast iron:

V_{u} = 2.82 \cdot BHN - 282 \leq 564 (normalMPa) .

…”

Section: Current Design Practicementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…These loads can be as much as two to three times larger as the original design loadings. Failure of one wheel could jeopardize the overall operation of the gate …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations