Performance of vertical drains in liquefaction mitigation under structures

García-Torres, Samy; Madabhushi, Gopal

doi:10.1007/s10518-019-00717-x

Cited by 32 publications

(7 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In consequence, in free field conditions, the efficacy of drains in terms of settlement reduction is limited, as drains only make Δu dissipation prevailing on generation without preventing the soil to strain. In the presence of buildings, instead, drains are also efficient in the reduction in settlements, since, avoiding soil fluidification, they prevent building sinking [10,19,20], provided that they are sufficiently distributed below the whole structure print [12]. Figure 13 reports the spectral ratio SR of accs 4 and 7, obtained by dividing their FAS by that of acc1.…”

Section: Effect Of Vertical Drains On Pore Pressure Accumulation and ...mentioning

confidence: 99%

“…(v) In consequence, in free field conditions, the efficacy of drains in terms of settlement reduction is limited. In the presence of buildings, instead, drains are also efficient in the reduction in settlements, since, avoiding soil fluidification, they prevent building sinking [10,19,20], provided that they are sufficiently distributed below the whole structure print [12]. An effect to be considered in this case is the increase in transverse acceleration and deformation demands on the foundation and superstructure.…”

Section: Closing Remarksmentioning

confidence: 99%

See 1 more Smart Citation

Centrifuge Modelling of Vertical and Horizontal Drains to Mitigate Earthquake-Induced Liquefaction

Giretti

Fioravante

2023

Geosciences

View full text Add to dashboard Cite

This paper reports the results of dynamic centrifuge tests carried out on sandy models alternatively equipped with vertical or horizontal drains. The main aim of the experimentation was to investigate the use of horizontal drains to mitigate the liquefaction susceptibility of sandy deposits and to validate their applicability as a remediation technique applicable in urban and industrial areas to protect existing buildings from liquefaction. The assessment and validation were carried out by comparing the seismic behavior of models treated with horizontal drains with that of the untreated model and models equipped with vertical drains.

show abstract

Section: Effect Of Vertical Drains On Pore Pressure Accumulation and ...mentioning

confidence: 99%

Section: Closing Remarksmentioning

confidence: 99%

Centrifuge Modelling of Vertical and Horizontal Drains to Mitigate Earthquake-Induced Liquefaction

Giretti

Fioravante

2023

Geosciences

View full text Add to dashboard Cite

show abstract

“…4. Garcia-Torres and Madabhushi [8,9] have investigated the performance of vertical and inclined drains. It will be shown later in this paper that it is preferable to have inclined drains to reduce the drainage distance between the Fig.…”

Section: Earthquake Induced Liquefactionmentioning

confidence: 99%

Sustainable Measures for Protection of Structures Against Earthquake Induced Liquefaction

Madabhushi

García-Torres

2021

Indian Geotech J

View full text Add to dashboard Cite

Soil liquefaction can cause excessive damage to structures as witnessed in many recent earthquakes. The damage to small/medium-sized buildings can lead to excessive death toll and economic losses due to the sheer number of such buildings. Economic and sustainable methods to mitigate liquefaction damage to such buildings are therefore required. In this paper, the use of rubble brick as a material to construct earthquake drains is proposed. The efficacy of these drains to mitigate liquefaction effects was investigated, for the first time to include the effects of the foundations of a structure by using dynamic centrifuge testing. It will be shown that performance of the foundation in terms of its settlement was improved by the rubble brick drains by directly comparing them to the foundation on unimproved, liquefiable ground. The dynamic response in terms of horizontal accelerations and rotations will be compared. The dynamic centrifuge tests also yielded valuable information with regard to the excess pore pressure variation below the foundations both spatially and temporally. Differences of excess pore pressures between the improved and unimproved ground will be compared. Finally, a simplified 3D finite element analysis will be introduced that will be shown to satisfactorily capture the settlement characteristics of the foundation located on liquefiable soil with earthquake drains.

show abstract

“…A comparison study has been done on the effectiveness of horizontal drainage in different geometric layouts [8]. The study in [9] has analyzed the performance of vertical drainage under the building together with the dynamic response of the foundation shown by the dissipation behavior of soil excess pore pressure. Experimental measurements as well as numerical simulations were carried out to describe the increase in excess pore pressure to liquefaction [10].…”

Section: Introductionmentioning

confidence: 99%

Liquefaction Mitigation Analysis Using Vertical Drain

Novasari

Hakam

Andriani

2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Liquefaction in semi-permeable soils such as fine sands occurs when the required time to transfer the pore water pressure into the form of effective stress is longer than the increased time of pore water pressure. Therefore, liquefaction mitigation needs to be done to speed up the air pressure flow time during an earthquake such as using vertical drains in this study. The data used here are adopted from previous studies that have been taken from a field test in Air Tawar, Padang. The results showed there is liquefaction potential based on soil data processing. The equivalent circle diameter value for the vertical drain is 1.2 m or a radial equivalent value of 0.6 m. Based on the analysis, the 60% pore water pressure dissipation within 20 seconds was obtained at a distance of 0.291 m in the radial direction. From the data above, it can be obtained that the vertical drain is capable of dissipating 60% of water pressure within 20 seconds to avoid liquefaction within the soil mass. Then it can be concluded that the application of vertical drain at a certain distance and depth can mitigate liquefaction in soil layers.

show abstract

Performance of vertical drains in liquefaction mitigation under structures

Cited by 32 publications

References 31 publications

Centrifuge Modelling of Vertical and Horizontal Drains to Mitigate Earthquake-Induced Liquefaction

Centrifuge Modelling of Vertical and Horizontal Drains to Mitigate Earthquake-Induced Liquefaction

Sustainable Measures for Protection of Structures Against Earthquake Induced Liquefaction

Liquefaction Mitigation Analysis Using Vertical Drain

Contact Info

Product

Resources

About