Elastic Earth Pressures on Rigid Walls Under Earthquake Loading

Li, X.; Aguilar, O.

doi:10.1080/13632460009350378

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…The first type is to treat the cable tension and the landslide thrust as the given loads, and apply them directly onto the stabilizing piles, in which the stresses and deformations of the pile above and under the sliding surface are calculated, respectively, and the calculation follows the Winkler elastic foundation beam approach [11]. This calculation method is relatively simple, but the theory has an obvious deficiency [12], due to the landslide thrust calculation not considering the deformation compatibility of the anchor cables and the pile. The second method is that in the calculation of the landslide thrust action, the deformation compatibility of the anchor cables and stabilizing pile is considered, and therefore the cable tension in the work process is changed, which means that this method has considered the change of the anchor stress as a result of the landslide thrust.…”

Section: Methodology 21 Pile-soil-anchor Dynamic Coupling Modelmentioning

confidence: 99%

A novel approach for seismic design of anchored sheet pile wall

Zhang

et al. 2016

Teh. vjesn.

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Original scientific paper From investigations of damaged earth structures after earthquakes, anchored sheet pile wall has proved to be an excellent seismic structure. However, due to the complexity of the stress system, some fundamental theoretical issues have not been completely solved, so the theoretical development of the structure lags behind application, especially in the development of seismic design theory. In order to make up for this deficiency, a new simplified approach was proposed in this paper, based on previous research. In this approach, the dynamic coupling effect of the pile-soil-anchor was considered, and governing equations were established. In addition, to verify the applicability of the proposed approach, large-scale shaking table tests were performed. In the tests, similitude ratios and similar materials were appropriately applied, and horizontal and vertical acceleration time histories recorded at the Wolong station in the Wenchuan earthquake, China, were used to excite the model. Many time history curves, including dynamic and total earth pressures acting on the stabilizing pile, the cable tensions and the displacements of the wall were obtained. By comparison of the earth pressures and cable tensions between the calculations and tests, the correlation coefficient is 0,943 and 0,890 for earth pressures and cable tensions, respectively. It illustrates that the correlation coefficient between tested values and theoretical results using the proposed theoretical calculation approach is high and close to 1,0, and it is proved that the proposed approach is suitable for practical application. Keywords Novi pristup seizmičkom projektiranju ukotvljenog pribojaIzvorni znanstveni članak Istraživanja oštećenih zemljanih konstrukcija nakon zemljotresa pokazala su da je ukotvljeni priboj (zagat) odlična seizmička konstrukcija. Međutim, zbog složenosti sustava naprezanja, neka temeljna teorijska pitanja još nisu potpuno riješena te teorijski razvoj konstrukcije zaostaje za primjenom, posebice u razvoju teorije seizmičkog proračuna. Kako bi se nadoknadio ovaj nedostatak, u radu se predlaže novi pojednostavljeni pristup, temeljen na prethodnom istraživanju. U tom se pristupu razmatrao učinak dinamičke sprege stup (pilon, šip) -zemlja -anker (zatezač), a postavljene su i odgovarajuće jednadžbe. Uz to, kako bi se provjerila primjenjivost predloženog pristupa, provedena su opsežna ispitivanja trešenjem (shaking table tests). U tim su ispitivanjima odgovarajuće primijenjeni omjeri sličnosti i slični materijali, a podaci o vremenu horizontalnog i vertikalnog ubrzanja zabilježeni na Wolong stanici tijekom Wenchuan zemljotresa u Kini, primijenjeni su za pobuđivanje modela. Dobiveni su mnogi podaci, uključujući dinamičke i ukupne pritiske zemlje koji djeluju na stabilizacijski stup, zategnutost užadi i pomake priboja. Usporedbom pritisaka zemljane mase i zategnutosti užadi dobivenih proračunom i ispitivanjima, dobio se koeficijent korelacije od 0,943 i 0,890 za pritisak zemlje, odnosno zategnutosti užadi. To pok...

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Section: Methodology 21 Pile-soil-anchor Dynamic Coupling Modelmentioning

confidence: 99%

A novel approach for seismic design of anchored sheet pile wall

Zhang

et al. 2016

Teh. vjesn.

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“…Veletsos and Younan [54] performed analytical investigations on flexible and rigid RW and observed that the flexibility of the base retrained RW could significantly affect the backfill pressure. Li and Aguilar [26] studied the seismic performance of rigid RW by performing a detailed analytical investigation, they related the point of application of dynamic thrust with the shear wave velocity (V SH ) in backfill and foundation soil. Santhoshkumar & Ghosh [47] studied the passive response of hunchbacked RW using a pseudo-dynamic approach and observed a larger failure domain size with increasing base excitation.…”

Section: Introductionmentioning

confidence: 99%

Displacement based seismic assessment of base restrained retaining walls

Tiwari

Lam

2022

Acta Geotech.

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The present work deals with assessment of earthquake-induced displacement of the base restrained retaining walls (RW’s). A detailed and rigorous finite element (FE) investigation has been carried out following the shaking table experiments on a scaled-down RW model. The FE simulations were performed by conducting several nonlinear time history analyses on a two-dimensional (2D) plane strain FE model of a prototype RW. The hardening and softening of backfill have been simulated by calibrating the Mohr Coulomb material model against the triaxial test results. Role of different backfill into the seismic performance of base restrained RW has also been investigated. It was observed that the cohesionless backfill has a slight influence on the earthquake induced displacement of base restrained RW’s. Amplification of horizontal acceleration in backfill has been observed with no direct correlation with the applied earthquake excitation. The understanding and findings based on shaking table experiment and FE simulations have been used for development of an analytical model for estimation of earthquake induced displacement of base restrained RW. The validity of proposed analytical model has also been examined against the shaking table experiment and FE simulation results.

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“…Numerous investigations have also been conducted to study the dynamic behavior of the reinforced soil-wall systems and plate vibration including: Li and Aguilar [40], Gazetas et al [41], Lanzoni et al [42], Tang and Yeh [43], Mojallal et al [44], Chen et al [45], Liu et al [46] and Shi and Rehman [47].…”

Section: Review Of Past Studiesmentioning

confidence: 99%

An analytical model for determining the effect of damping on 3D natural frequency of reinforced walls

Darvishpour¹,

Ghanbari²,

Hosseini³

et al. 2018

J. meas. eng.

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Abstract. Most of the proposed methods for obtaining the free vibration natural frequency of the retaining wall assume the behavior of the wall in the two-dimensional domain, and they are not able to express the three-dimensional behavior of these structures in a satisfying manner. Moreover, the effect of damping has not yet been considered in analytical study. In this paper, the plate theory and Galerkin method is employed to analyze the free vibration of a wall-reinforcement-soil system in the three dimensional domain and survey the effect of damping on the natural frequency of a retaining wall. So, the retaining wall is modeled as a clamped-free plate and the stiffness of the soil and reinforcements existing behind the wall are modeled as a set of springs and the damping effect of the system is modeled by a set of dampers located at the back of the Retaining wall and attached to it. The results of the proposed model are compared with both the results of the other researchers and the ones from finite element method (FEM). They are also compared with the results of a full-scale experiment and it shows a good agreement. The proposed method which uses the plate theory, also yields the free vibration natural frequencies of the wall's extensional modes with an acceptable accuracy. Finally, the effect of tensile and compressive behaviors of the soil and the reinforcements on the fundamental frequency of a reinforced retaining wall is studied.Keywords: reinforced retaining wall, reinforcement, 3D vibration, analytical method, damping ratio, mode shape.

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Elastic Earth Pressures on Rigid Walls Under Earthquake Loading

Cited by 6 publications

References 6 publications

A novel approach for seismic design of anchored sheet pile wall

A novel approach for seismic design of anchored sheet pile wall

Displacement based seismic assessment of base restrained retaining walls

An analytical model for determining the effect of damping on 3D natural frequency of reinforced walls

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