Henry Wong

Lawrence Livermore National Laboratory

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Chin Jian Leo

Western Sydney University

P. Harutoonian

Western Sydney University

D.S. Liyanapathirana

Western Sydney University

K. Tokeshi

Western Sydney University

Silvia Castellaro

University of Bologna

Ju Jia Zou

Western Sydney University

T. Doanh

École Nationale des Travaux Publics de l'État

Enlong Liu

Sichuan University

Didier Subrin

Centre d'études de l'emploi

X. L. Lei

Chinese Academy of Sciences

Cooperative Institutions

Centre National de la Recherche Scientifique

Université Claude Bernard Lyon 1

École Nationale des Travaux Publics de l'État

Chinese Academy of Sciences

University of Chinese Academy of Sciences

North China University of Water Resources and Electric Power

Western Sydney University

Laboratoire de Tribologie et Dynamique des Systèmes

Laboratoire de Mécanique et Génie Civil

Chengdu University of Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Land subsidence caused by internal soil erosion owing to pumping confined aquifer groundwater during the deep foundation construction in Shanghai

Natural Hazards (2013)

Xingsheng Zhang Jianxiu Wang Henry Wong Chin Jian Leo Qi Liu

Internal Erosion

Foundation (evidence)

Sinkhole

10.1007/s11069-013-0718-7

Cite

Citations (30)

A Thermodynamics-Based Model on the Internal Erosion of Earth Structures

Geotechnical and Geological Engineering (2012)

X. S. Zhang Henry Wong Chin Jian Leo Tuan-Anh Bui Jianxun Wang

Internal Erosion

10.1007/s10706-012-9600-8

Cite

Citations (40)

Investigation of dynamically compacted ground by HVSR-based approach

Soil Dynamics and Earthquake Engineering (2013)

P. Harutoonian Chin Jian Leo K. Tokeshi T. Doanh Silvia Castellaro

Bedrock

Microtremor

Reflection

10.1016/j.soildyn.2012.12.004

Cite

Citations (25)

Microtremor measurements of rolling compacted ground

Soil Dynamics and Earthquake Engineering (2012)

P. Harutoonian Chin Jian Leo T. Doanh Silvia Castellaro Ju Jia Zou

Microtremor

10.1016/j.soildyn.2012.05.006

Cite

Citations (26)

Stress measurement in partially saturated soils and its application to physical modeling of tunnel excavation

Canadian Geotechnical Journal (2013)

Nicolas Berthoz Denis Branque Henry Wong Didier Subrin

The capacity of a commercially available miniature pressure sensor for measuring stress evolutions in a partially saturated soil under quasi-static loads is studied, in view of its later application in laboratory-scale physical models. An extensive calibration program is first performed on a triaxial cell under isotropic loadings. These calibration tests provide useful data for assessing the uncertainty in stress measurements, especially in the case of partially saturated granular materials. Notably, influences of soil density, water content, and average grain size on stress measurements are quantified. Following these tests, an example of stress measurements on an original reduced-scale model of “earth pressure balance shield” (EPBS) is presented, which involves three-dimensional arching effects developing around the shield during excavation.

Lateral earth pressure

Overburden pressure

Triaxial shear test

10.1139/cgj-2013-0154

Cite

Citations (8)

Field monitoring of an unsaturated saprolitic hillslope

Canadian Geotechnical Journal (2011)

Anthony Kwan Leung Hua Sun Stuart W. Millis J W Pappin C.W.W. Ng

To advance the understanding of the rainfall-induced landslide triggering mechanism, a comprehensive field monitoring programme was implemented in a saprolitic hillslope in Hong Kong. The instrumentation covered the measurements of the two stress-state variables (i.e., net normal stress and matric suction) and their effects. The monitoring results, including pore-water pressure (PWP), volumetric water content, subsurface total horizontal stress, horizontal displacement, and rainfall intensity, are reported. Most instruments recorded reliable and good quality data, which have strong correlation among each other. The site-specific infiltration and deformation characteristics of the hillslope subjected to heavy rainstorms are investigated. Shallow transient perched groundwater tables were believed to be developed at colluvial deposits on the top 3 m, where PWPs up to 20 kPa were typically measured. The main groundwater table probably rose by 6 m when the hillslope was subjected to rainfall intensity of 133.5 mm/h. It is possible that cross-slope groundwater flowed along a shallow, dipped decomposed rock stratum at the central portion of the landslide body. Besides, two distinct types of slope movements were generally observed, namely the “cantilever” and the “deep-seated” mode. Rupture surfaces have possibly been developed at 5 m below ground or deeper, resulting in a multiple translational- and rotational-slide type of failure.

Infiltration (HVAC)

Colluvium

Piezometer

10.1139/t10-069

Cite

Citations (27)

Impact of relative humidity on the mechanical behavior of compacted earth as a building material

Construction and Building Materials (2016)

Florian Champiré Antonin Fabbri Jean‐Claude Morel Henry Wong Fionn McGregor

10.1016/j.conbuildmat.2016.01.027

Cite

Citations (135)

Convergenceconfinement analysis of a bolt-supported tunnel using the homogenization method

Canadian Geotechnical Journal (2006)

Henry Wong Didier Subrin Daniel Dias

The behaviour of tunnels reinforced with radially disposed fully grouted bolts is investigated in this paper. Perfect bonding and ideal diffusion of bolt tension are assumed, so that the bolt tension can be assimilated to an equivalent uniaxial stress tensor. An analytical model of the convergenceconfinement type is proposed that accounts for the delayed action of bolts due to ground decompression prior to bolt installation. This factor leads to nonsimultaneous yielding, and more generally, a different stress history for each constituent, requiring special treatments in the incremental elastoplasticity calculations. Nonetheless, the resulting model remains sufficiently simple, and an analytical solution is still accessible. Charts are provided to allow for parametric studies and quick preliminary designs. Comparisons with 3D numerical calculations show that the model gives precise results if the correct convergence at the moment of bolt installation is used as an "external" input parameter, validating the homogenization approach. An approximate methodology based on previous works is proposed to determine this parameter to render the proposed model "self-sufficient." Its predictions are again compared to 3D numerical computations, and the results are found to be sufficiently accurate for practical applications.Key words: reinforcement, anisotropy, analytical, lining, yield, elastoplasticity.

Homogenization

10.1139/t06-016

Cite

Citations (25)

The 23 July 1994 landslide at Kwun Lung Lau, Hong Kong

Canadian Geotechnical Journal (1997)

Henry Wong KKS Ho

Un glissement de terrain a eu lieu a proximite d'un trottoir dans le lotissement de Kwun Lung Lau a Hong Kong, le 23 juillet 1994. Cet accident a provoque la rupture d'un mur en maconnerie vieux de plus de 100 ans qui avait vraisemblablement ete concu comme parement pour une excavation. Le tout a entraine la perte de cinq vies humaines et de serieuses blessures a trois autres personnes. Le Geotechnical Engineering Office (GEO, Bureau d'Etudes Geotechniques) du gouvernement de Hong Kong a conduit une etude approfondie des causes et du mecanisme du glissement. Plusieurs des conclusions techniques presentent un certain interet, en particulier le mecanisme de rupture d'un mur en maconnerie mince et l'influence d'installations hydrauliques souterraines qui fuient sur la stabilite de la pente. Cet article fait le point sur l'approche qui a ete suivie et decrit les conclusions techniques. L'etude a determine que le glissement de terrain a implique le flambage et l'effondrement fragile du mur. Cette rupture du mur a ete declenchee par l'infiltration d'eau souterraine causee par des systemes de drains enterres defectueux ce qui a sature et affaibli la masse de sol. Les precipitations prolongees et importantes qui ont precede le glissement ont joue un role en provoquant un afflux d'eau important dans le terrain.

10.1139/t97-051

Cite

Citations (24)

Investigation of Composite Compacted Ground Using Microtremors

Journal of Geotechnical and Geoenvironmental Engineering (2012)

P. Harutoonian Chin Jian Leo K. Tokeshi T. Doanh Silvia Castellaro

This paper presents an interesting and unique case study of a composite compacted site where the upper section of dynamically compacted material achieved in the first stage of compaction was subsequently removed, reinstated, and recompacted in lifts in the second stage using conventional roller compaction. Dynamic compaction was employed initially in this area because of the need to densify deep fill materials. Although a number of mechanical methods are already available for assessing deep compaction, it has been particularly rare to find a cost-effective method that can be applied to a deep and extensive compacted site. Noninvasive techniques based on measurement of the horizontal-to-vertical spectral ratio (HVSR) of ambient vibrations (microtremors) are proposed in this paper to assist in a pilot appraisal of this area, which occupies a part of a deep and laterally extensive compacted site. First, the key features of the measured HVSR curves were interpreted to give a preliminary insight into the quality of compaction achieved. Second, a trial-and-error forward modeling procedure fitting the theoretical HVSR curve to the measured HVSR curve then allowed the shear-wave velocity (Vs) profile conveying the compaction quality of the compacted ground to be inferred. An initial calibration was carried out to match the inferred Vs profile in a relative sense against the cone-penetration-test (CPT) data at a test location. Verification was further made by comparing the inferred Vs profiles against independent CPT, dialatometer-test (DMT), and dry-density data at two other locations. The HVSR technique was then applied to appraise the consistency and quality of compaction at grid points not covered by the localized mechanical and other independent tests.

Microtremor

Cone penetration test

Penetration test

10.1061/(asce)gt.1943-5606.0000881

Cite

Citations (3)