Shaking table study of concrete gravity dam monoliths

Donlon, W.P.; Hall, John F.

doi:10.1002/eqe.4290200805

Cited by 35 publications

(18 citation statements)

References 5 publications

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“…In this regard, engineers usually resort to scaled testing by either changing the density of the dam material [15,16] or adjusting the gravitational acceleration using centrifuges in order to simulate the vertical stresses [17] properly according to the similitude laws. In this regard, engineers usually resort to scaled testing by either changing the density of the dam material [15,16] or adjusting the gravitational acceleration using centrifuges in order to simulate the vertical stresses [17] properly according to the similitude laws.…”

Section: Introductionmentioning

confidence: 99%

Pseudo‐dynamic testing of a concrete gravity dam

Aldemir

Binici

Arıcı

et al. 2015

Earthq Engng Struct Dyn

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Summary Inspired from the simplified single degree of freedom modeling approach used in the preliminary design of concrete gravity dams, a pseudo‐dynamic testing method was devised for the seismic testing of a concrete gravity dam section. The test specimen was a 1/75 scaled section of the 120‐m‐high monolith of the Melen Dam, one of the highest concrete gravity dams to be built in Turkey. The single degree of freedom idealization of the dam section was validated in the first stage of the study using numerical simulations including the dam–reservoir interaction. Afterwards, pseudo‐dynamic testing was conducted on the specimen using three ground motions corresponding to different hazard levels. Lateral displacement and base shear demands were measured. The crack propagation at the base of the dam was monitored with the measurement of the crack widths and the base sliding displacements. After the pseudo‐dynamic loading, a static pushover test was conducted to determine the reserve capacity of the test specimen. Despite major cracking at the base of the monolith, neither significant sliding nor a stability problem that might jeopardize the stability of the dam was observed. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Pseudo‐dynamic testing of a concrete gravity dam

Aldemir

Binici

Arıcı

et al. 2015

Earthq Engng Struct Dyn

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“…Generally, the fracture toughness K IC and the stress intensity factor K I are used to determine the concrete's evolution of cracking. 2,10 Thus…”

Section: Development Of Damage Similarity Theorymentioning

confidence: 99%

Investigation of Non-fully Similar Laws of Damage to an Arch Dam in Shaking Table Model Tests

Chen

Lundbäck

et al. 2020

Advances in Mechanical Engineering

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In order to overcome the defect that the general shaking table test can’t clarify the scale relationship between the prototype structure and the scale model in the damaged area based on the fully similar laws, we derived a method that can analyze the relationship between the prototype structure and the scale model in the damaged area based on non-fully similar lows and verified it. We selected the appropriate material (the emulation concrete material, ECM), which has a good scale relationship with the prototype material in the elastic stage, the crack appearance stage, and crack propagation stage (damage stage). We proposed some similar ratios to reveal the similar relationship between the prototype structure and the scale model in the elastic stage, the crack appearance stage, and the crack propagation stage. Especially, we proposed two similar ratios: cr and hr (deduced by the fracture toughness similarity requirements and the fracture energy similarity requirements, respectively) which can well reflect the similar relationship between the prototype structure and the scale model in the damaged area. In order to verify these ratios, we compared the results of the prototype structure numerical simulation with those of the shaking table test of the scale model. The results show that hr has higher accuracy for predicting the relationship between the prototype structure and the scale model in the damaged area.

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“…One consideration is that certain models do not need to simultaneously satisfy the elasticity similitude criterion and gravity similitude criterion, such as the soil‐structure–fluid model . The other consideration is to use special material to simulate the material of the prototype to satisfy the similitude conditions and ensure the same density ratio for the specimen material and water . This approach cannot ensure that the constitutive properties of the model material are identical to those of the prototype material, especially in the nonlinear stage.…”

Section: Introductionmentioning

confidence: 99%

“…The similitude ratio of length was 1:30, and the similitude ratio of the density of the saturated soil was 1, which equaled that of water. Donlon and Hall conducted a series of shaking table tests on 3 small‐scale models of a concrete gravity dam monolith to examine the nature of crack formation and the stability of the dam in the presence of cracks. To model the reservoir, a wooden tank was located off the shaking table adjacent to the upstream face of the dam.…”

Section: Introductionmentioning

confidence: 99%

Coordinative similitude law considering fluid‐structure interaction for underwater shaking table tests

Shi

et al. 2018

Earthq Engng Struct Dyn

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Summary Generally, when a model is made of the same material as the prototype in shaking table tests, the equivalent material density of the scaled model is greater than that of the prototype because mass is added to the model to satisfy similitude criteria. When the water environment is modeled in underwater shaking table tests, however, it is difficult to change the density of water. The differences in the density similitude ratios of specimen materials and water can affect the similitude ratios of the hydrodynamic and wave forces with those of other forces. To solve this problem, a coordinative similitude law is proposed for underwater shaking table tests by adjusting the width of the upstream face of the model or the wave height in the model test to match the similitude ratios of hydrodynamic and wave forces with those of other forces. The designs of the similitude relations were investigated for earthquake excitation, wave excitation, and combined earthquake and wave excitation conditions. Series of numerical simulations and underwater shaking table tests were performed to validate the proposed coordinative similitude law through a comparison of coordinative model and conventional model designed based on the coordinative similitude law and traditional artificial mass simulation, respectively. The results show that the relative error was less than 10% for the coordinative model, whereas it reached 80% for the conventional model. The coordinative similitude law can better reproduce the dynamic responses of the prototype, and thus, this similitude law can be used in underwater shaking table tests.

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Shaking table study of concrete gravity dam monoliths

Cited by 35 publications

References 5 publications

Pseudo‐dynamic testing of a concrete gravity dam

Pseudo‐dynamic testing of a concrete gravity dam

Investigation of Non-fully Similar Laws of Damage to an Arch Dam in Shaking Table Model Tests

Coordinative similitude law considering fluid‐structure interaction for underwater shaking table tests

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