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Prediction of hydro-suction dredging depth using data-driven methods

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 652-664 doi: 10.1007/s11709-021-0719-7

Abstract: optimization (HGSO) methods, and simple equations methods were applied to simulate the maximum hydro-suction

Keywords： sedimentation water resources dam engineering machine learning heuristic

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Construction technology in huge caisson on the ground

Qiu Qionghai,Lin Fan,Jiang Jianghua

Strategic Study of CAE 2010, Volume 12, Issue 4, Pages 14-20

Abstract:

Taizhou Changjiang River Highway Bridge is a suspension bridge with three towers, two spans and two anchorages. The main span is 2×1 080 m. The south and north foundation of the anchorages are deep water caisson with rectangular plane size 67.9 m×52.0 m. A great many of technical innovations are adopted to solve many technical problems including the disposal of the compound basement, manufacturing and installation of the caisson, fulfillment of concrete in the caisson etc, based on the conditions such as the thick overburden layer at the top of the caisson, the super dimension and the big sinking depth of the caisson. This article gives a brief introduction on construction technologies in huge caisson on the ground and can be taken as a reference during the construction of the super scale caisson on the ground in the future.

Keywords： suspension bridge anchorage caisson assembly deep-well dewatering foundation settlement air suction

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Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4, Pages 471-476 doi: 10.1007/s11705-011-1130-z

Abstract: On the other hand, with an increase in the magnetic field and mass suction, both boundary layer thicknesses

Keywords： slip flow MHD boundary layer reactive solute diffusion flat plate suction/injection

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heat source/sink on unsteady MHD boundary layer flow and heat transfer over a shrinking sheet with suction

Krishnendu Bhattacharyya

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3, Pages 376-384 doi: 10.1007/s11705-011-1121-0

Abstract: heat source/sink on the unsteady boundary layer flow and heat transfer past a shrinking sheet with suction

Keywords： MHD boundary layer unsteady flow heat transfer thermal radiation heat source/sink shrinking sheet suction

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On the MHD squeeze flow between two parallel disks with suction or injection via HAM and HPM

D. D. GANJI,M. ABBASI,J. RAHIMI,M. GHOLAMI,I. RAHIMIPETROUDI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3, Pages 270-280 doi: 10.1007/s11465-014-0303-0

Abstract: of the present work is to investigate the effect of squeeze Reynolds number, Hartmann number and the suction

Keywords： Homotopy Analysis Method Homotopy Perturbation Method incompressible flow magneto-hydrodynamic flow parallel disks

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Studying the stress-suction coupling in soils using an oedometer equipped with a high capacity tensiometer

Trung Tinh LE, Yu-Jun CUI, Juan Jorge MU?OZ, Pierre DELAGE, Anh Minh TANG, Xiang-Ling LI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2, Pages 160-170 doi: 10.1007/s11709-011-0106-x

Abstract: During oedometer compression, the changes in suction with increased vertical stress are monitored byA comparison is also made with a completely different soil sample under suction, i.e. a statically compactedThe experiment allows the determination of the point at which suction is changed to positive pressureBelow this point, the ratio between the vertical stress and the change in suction are determined.The suction/stress behavior during unloading is also described and discussed.

Keywords： Oedometer tensiometer swelling physicochemical and mechanical effects stress/suction coupling soil plasticity

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Stability analysis of layered slopes in unsaturated soils

Guangyu DAI; Fei ZHANG; Yuke WANG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3, Pages 378-387 doi: 10.1007/s11709-022-0808-2

Abstract: unsaturated conditions and uses a limit equilibrium method to determine the factor of safety involving suctionParametric analyses are conducted to explore the influences of the matric suction on the stability ofThe obtained results show that larger suction stress provided in unsaturated clay dominates the stability

Keywords： slope stability suction stress unsaturated soil layered slope limit equilibrium

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Behavior of materials for earth and rockfill dams: Perspective from unsaturated soil mechanics

Eduardo E. ALONSO, Rafaela CARDOSO,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1, Pages 1-39 doi: 10.1007/s11709-010-0013-6

Abstract: The basis of the design of earth and rockfill dams is focused on ensuring the stability of the structure under a set of conditions expected to occur during its life. Combined mechanical and hydraulic conditions must be considered since pore pressures develop during construction, after impoundment and in drawdown. Other instability phenomena caused by transient flow and internal erosion must be considered. The prediction of the hydro-mechanical behavior of traditional and non-traditional materials used in the construction of dams is therefore fundamental. The materials used for dam’s construction cover a wide range from clayey materials to rockfill. In a broad sense they are compacted materials and therefore unsaturated materials. A summary of the current level of knowledge on the behavior of traditional materials used in the construction of dams is presented in the paper. Regular compacted materials (with a significant clay fraction), rockfill and compacted soft rocks are studied with more detail. The latter are non-traditional materials. They are analysed because their use, as well as the use of mixtures of soil and rock, is becoming more necessary for sustainability reasons.

Keywords： dams unsaturated soil mechanics suction rockfill clayey soil mixture

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Intercontinental transport of air pollution

Lin ZHANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 1, Pages 20-29 doi: 10.1007/s11783-010-0014-7

Abstract: There is an increasing interest on the intercontinental transport of air pollution among the three mainAir pollutants with sufficient long lifetime can be transported from one continent to another.from ground sites, aircraft and satellites have demonstrated this intercontinental-scale transport of airmodeling studies of intercontinental transport of ozone and its precursors, and the resulting impacts on air

Keywords： intercontinental transport ozone air pollution

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Health impacts of air pollution in China

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1367-1

Abstract:

•Impacts of air pollution on various body systems health in China were

Keywords： Health impacts Air pollution China Advances

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A new method of studying collapsibility of loess

Yuanqing ZHU , Zhenghan CHEN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3, Pages 305-311 doi: 10.1007/s11709-009-0040-3

Abstract: A new triaxial testing system that could control suction in wetting-induced collapsible tests was successfullydeveloped to study the suction effects on wetting-induced collapsible deformation.The pedestal of the triaxial cell was made up of two parts, and the equipment not only could control suctionsuctions and the same net cell pressure, and tests under different net cell pressures and the same suctionIt was indicated that the collapsible deformation increased with the increasing suction, and the effect

Keywords： triaxial apparatus for collapsible soils controlled suction pressure/volume controlled equipment double

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Investigation of the hydro-mechanical behaviour of compacted expansive clay

Yujun CUI, An Ninh TA, Anh Minh TANG, Yingfa LU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2, Pages 154-164 doi: 10.1007/s11709-010-0019-0

Abstract: The soil was air-dried, crushed, and passed through a 2 mm sieve before being statically compactedThe mechanical behaviour was investigated by tests in oedometer with controlled suction using the vaporequilibrium technique (suction = 0, 9, 39, and 110 MPa).: the lower the suction, the higher the compressibility.The data from the simultaneous monitoring of suction and water content were used to determine the water

Keywords： Romainville clay suction control oedometer test large infiltration task hydro-mechanical behaviour

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Experimental investigation on desiccant air-conditioning system in India

Vijay MITTAL, B. Kant KHAN,

Frontiers in Energy 2010, Volume 4, Issue 2, Pages 161-165 doi: 10.1007/s11708-009-0070-5

Abstract: in a room with a volume of 86.4 m, air ducts and a blower.The experiment was made in such a way that the percentages of return air, outdoor air and indoor airmixed with the air leaving the desiccant and desiccant bed thickness could be adjusted.The optimum percentages of air ratios were as follows: 10% of outdoor air, 10% of return air (mixed togetherat the desiccant bed inlet) and 80% of indoor air mixed with the dry air leaving the desiccant.

Keywords： air ratios ambient conditions desiccant air-conditioning silica gel

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Phenolic compounds removal by wet air oxidation based processes

Linbi Zhou, Hongbin Cao, Claude Descorme, Yongbing Xie

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-017-0970-2

Abstract: Wet air oxidation (WAO) and catalytic wet air oxidation (CWAO) are efficient processes to degrade organic

Keywords： Wet air oxidation Catalytic wet air oxidation Phenolic compounds Heterogeneous catalysts Mechanism

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API-based assessment on urban air environment bearing capability in China

Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6, Pages 1049-1055 doi: 10.1007/s11783-014-0662-0

Abstract: Given the complexity and time-consuming of the conventional environmental capacity based assessment on airenvironment carrying capacity; a new method for assessing urban air environment carrying capacity basedon air pollution index (API) is presented.By using this new method, the air environmental bearing capability of 333 cities at the prefecture levelThe assessment results imply that the existing air quality standard (GB3095-1996) is quite unsound.

Keywords： air pollution index (API) air environment bearing capability key city assessment method