Behavior of Cast‐Iron Spillway Gate Wheels

Polyzois, Dimos; Muzyczka, W.J.

doi:10.1061/(asce)0899-1561(1994)6:4(495)

Cited by 3 publications

(5 citation statements)

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“…A simple approach would be to relate shear strength to hardness since hardness can be easily obtained. However, most of the information available involves the relationship between the tensile strength of steel and hardness . Lieson and Jurinal developed the following relationship between the ultimate tensile strength, T u , and the BHN for plain carbon steel:

T_{u} = 3.45 \cdot BHN (normalMPa) .

…”

Section: Current Design Practicementioning

confidence: 99%

“…There is no direct relationship between the ultimate shear strength, V u , and hardness. Rather, the relationships between the shear and tensile strength and between the tensile strength and hardness have been used to derive a relationship between shear strength and hardness . For low carbon steel, the shear to tensile strength ratio is:

\frac{V_{u}}{T_{u}} = 0.7 .

…”

Section: Current Design Practicementioning

confidence: 99%

“…However, most of the information available involves the relationship between the tensile strength of steel and hardness. 5 Lieson and Jurinal 15 developed the following relationship between the ultimate tensile strength, T u , and the BHN for plain carbon steel:…”

Section: Current Design Practicementioning

confidence: 99%

“…The applicability of this formula to crowned wheels is questionable. Furthermore, this formula provides no information on the fatigue life of rollers or the relationship between the safe working loads and ultimate load capacity of the wheels, thereby making the safe wheel capacity unknown …”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, this formula provides no information on the fatigue life of rollers or the relationship between the safe working loads and ultimate load capacity of the wheels, thereby making the safe wheel capacity unknown. 5 The objective of the research program presented in this article is to examine the performance of cast iron wheels under cyclic loading and assess their contact fatigue behavior through a series of full-scale tests. The high cost associated with full-scale experimental research on the fatigue performance of structural elements under rolling contact has led researchers to rely more on theoretical models than experiment-based evidence to develop appropriate failure criteria.…”

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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