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Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

Sergio A. MARTÍNEZ-GALVÁN, Miguel P. ROMO

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 67-80 doi: 10.1007/s11709-017-0399-5

Abstract: The new type of deep foundation for buildings on saturated, compressible-low strength clayey soil deposits, branded structural cell essentially consists of a rigid concrete top slab, structurally connected to reinforced concrete peripheral walls (diaphragms) that enclose the natural soil. Accordingly, as the initial volume of the confined soft clays within the lateral stiff diaphragms will remain constant upon loading, the hollowed structural cell will be “transformed” into a very large cross-section pillar of unit weight slightly higher than that of the natural soft clayey soil. This type of foundation seems to be a highly competitive alternative to the friction pile-box foundations (widely used in Mexico City clays), due to its economic and environmental advantages. Economies result, for example, from the absence of huge excavations hence sparing the need of earth retaining structures. Further savings result from appreciably smaller concrete volumes required for building the structural cell than the friction pile-box foundation; moreover, the construction time of the former is much shorter than that of the latter. Regarding the impact to the environment, less air contamination follows from the fact that both traffic jams and soil excavation lessen appreciably. Considering these facts and others regarding scheduling, it was decided to replace 48-friction pile-box foundations specified in the master plan project by this new type of foundation. The overall behavior of these cell foundations over a five-year period is fared from close visual observations and their leveling during the first three years after their construction.

Keywords： deep foundations     bearing capacity     resistant moment     structural cell     3D numerical modeling    

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Instantaneous deflection of light-weight concrete slabs

Behnam VAKHSHOURI, Shami NEJADI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 412-423 doi: 10.1007/s11709-017-0416-8

Abstract: Effects of aggregate type, loading levels and cracking moment together with the influences of ultimatemoment capacity and service moment on the instantaneous deflection of slabs are studied.

Keywords： instantaneous deflection     light-weight concrete     expanded polystyrene     effective moment of inertia     crackingmoment     moment capacity     service moment    

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Estimating moment capacity of ferrocement members using self-evolving network

Abdussamad ISMAIL

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 926-936 doi: 10.1007/s11709-019-0527-5

Abstract: The model is meant to serve as a simple but reliable tool for estimating the moment capacity of ferrocementThe data consists of information regarding flexural tests on ferrocement specimens which include momentproposed models with experimental data indicated that the models are capable of accurately estimating the moment

Keywords： ferrocement     moment capacity     self-evolving neural network    

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Shaking-moment balancing of mechanisms with principal vectors and momentum

V. van der WIJK

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 10-16 doi: 10.1007/s11465-013-0359-2

Abstract:

The design of shaking-moment-balanced linkages still is challenging.Considering moment balance in the very beginning of the design process of mechanisms is important forThe moment balance conditions are derived for three elements in series from which balance solutions areFrom the application for moment balancing of a 4R four-bar linkage it is shown that the moment balancing

Keywords： shaking-moment balancing     principal vector linkage     angular momentum    

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Initial stiffness and moment resistance of reinforced joint with end-plate connection

Sufang WANG, Yiyi CHEN,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 345-351 doi: 10.1007/s11709-009-0054-x

Abstract: The design moment resistance of column flange reinforced by backing plate is deduced based on yield linemethod, and the design moment resistances of other components are deduced based on present codes.The design moment resistance of the reinforced joint is then determined by the minimum of the designmoment resistances of all components.

Keywords： steel structure     end-plate connection     backing plate     supplementary web plate     initial stiffness     moment resistance    

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Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1536-1559 doi: 10.1007/s11705-022-2221-8

Abstract: Poly(ether−ether ketone) (PEEK) is a linear aromatic macromolecule, which can form semi-crystalline aggregative status, allowing PEEK materials to have strong environment tolerance and excellent physicochemical properties. PEEK materials have become a promising alternative to fabricate particular membranes used in extreme conditions. In the past few decades, many researches and evolutions have emerged in membrane fabrication with PEEK materials and its applications for treating organic solvents and their mixtures; however, there are little systematic and comprehensive literature to summarize fabrication approaches, compile applications, and elaborate PEEK property-structure relationship. In this review, the main approaches to fabricate PEEK-based membranes are illustrated concretely, including conventional thermal-induced and non-solvent-induced phase separation, and novel chemical-induced crystallization; the representative applications in ultrafiltration, nanofiltration and membrane contactor containing organic solvents are demonstrated systematically. Meanwhile, the mechanism to tune PEEK solubility in solvents, which can be achieved by altering monomers in synthesis processes or changing membrane preparation routes, is deeply analyzed. Moreover, the existing problems and the future prospects are also discussed. This review provides positive guidance for designing and fabricating membranes using PEEK and its derivative materials for task-specific applications in harsh conditions.

Keywords： PEEK     phase inversion     solvent-resistant membrane     nanofiltration     membrane contactor    

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Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1584-1594 doi: 10.1007/s11705-022-2189-4

Abstract: The differences of the ionic magnetic moment among rare earths are greater than that of ionic radius.Herein, a novel method based on the large ionic magnetic moment differences of rare earth elements wasliquid, then the ordering degree of them was improved with the Z-bond effect, and finally the magnetic moment

Keywords： rare earth element     different magnetic moment     magnetic separation     ionic liquid    

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Improved prediction of pile bending moment and deflection due to adjacent braced excavation

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0961-2

Abstract: This study develops equations to predict the existing pile bending moment and deflection produced byIt is practically unfeasible to obtain measurement data; hence, artificial data for the bending momentThe estimation results of the developed equations can provide satisfactory pile bending moment and deflection

Keywords： pile responses     excavation     prediction     deflection     bending moments    

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High-order moment methods for LRFD including random variables with unknown probability distributions

Zhao-Hui LU, Yan-Gang ZHAO, Zhi-Wu YU

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 288-295 doi: 10.1007/s11709-013-0210-1

Abstract: In this paper, the high-order moment methods for LRFD including random variables with unknown probabilityiterative computation of derivatives nor any design points; 3) In the applicable range of the high-order moment

Keywords： high-order moment methods     applicable range     load and resistance factors     target mean resistance    

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Identification of resistant pharmaceuticals in ozonation using QSAR modeling and their fate in electro-peroxone

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1394-6

Abstract:

• Effect of converting ozonation to E-peroxone was studied on pharmaceutical removal.

Keywords： Ozone     Electro-peroxone     Wastewater     Quantitative structure activity relationship     Advanced oxidation processes    

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Damage identification in connections of moment frames using time domain responses and an optimization

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 851-866 doi: 10.1007/s11709-021-0739-3

Abstract: In this study, an optimization-based method for joint damage identification of moment frames using theThe beam-to-column connection in a metallic moment frame structure is modeled by a zero-length rotational

Keywords： damage identification     beam-to-column connection     time-domain response     optimization    

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Estimation of load and resistance factors using the third-moment method based on the 3P-lognormal distribution

Yan-Gang ZHAO, Zhao-Hui LU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 315-322 doi: 10.1007/s11709-011-0117-7

Abstract: In this article, the third-moment reliability index, based on the three-parameter lognormal (3P-lognormalA simple method based on the third-moment method for estimating load and resistance factors is then proposedNumerical examples are presented to demonstrate the advantages of the proposed third moment method for

Keywords： load and resistance factors     third-moment method     three-parameter lognormal (3P-lognormal) distribution    

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Seismic performance of moment resisting steel frame subjected to earthquake excitations

Fadzli M. NAZRI, Pang Yew KEN

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 19-25 doi: 10.1007/s11709-014-0240-3

Abstract: Pushover analysis (POA) and incremental dynamic analysis (IDA) were run on moment resisting steel frames

Keywords： incremental dynamic analysis (IDA)     pushover analysis     performance-based seismic design    

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Rapamycin enhances the anti-tumor activity of cabozantinib in cMet inhibitor-resistant hepatocellular

Frontiers of Medicine 2022, Volume 16, Issue 3,   Pages 467-482 doi: 10.1007/s11684-021-0869-y

Abstract: human umbilical vascular endothelial cells and human growth factor-induced invasion of cMet inhibitor-resistantfindings uncover a potential combination therapy of cabozantinib and rapamycin to combat cabozantinib-resistant

Keywords： hepatocellular carcinoma     cabozantinib     primary resistance     rapamycin    

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Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 88-94 doi: 10.1007/s11705-013-1301-1

Abstract: The effect of adding Co, Ni or La on the methanation activity of a Mo-based sulfur-resistant catalyst

Keywords： sulfur-resistant     methanation     promoter    

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Title Author Date Type Operation

Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

Sergio A. MARTÍNEZ-GALVÁN, Miguel P. ROMO

Journal Article

Instantaneous deflection of light-weight concrete slabs

Behnam VAKHSHOURI, Shami NEJADI

Journal Article

Estimating moment capacity of ferrocement members using self-evolving network

Abdussamad ISMAIL

Journal Article

Shaking-moment balancing of mechanisms with principal vectors and momentum

V. van der WIJK

Journal Article

Initial stiffness and moment resistance of reinforced joint with end-plate connection

Sufang WANG, Yiyi CHEN,

Journal Article

Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Journal Article

Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

Journal Article

Improved prediction of pile bending moment and deflection due to adjacent braced excavation

Journal Article

High-order moment methods for LRFD including random variables with unknown probability distributions

Zhao-Hui LU, Yan-Gang ZHAO, Zhi-Wu YU

Journal Article

Identification of resistant pharmaceuticals in ozonation using QSAR modeling and their fate in electro-peroxone

Journal Article

Damage identification in connections of moment frames using time domain responses and an optimization

Journal Article

Estimation of load and resistance factors using the third-moment method based on the 3P-lognormal distribution

Yan-Gang ZHAO, Zhao-Hui LU

Journal Article

Seismic performance of moment resisting steel frame subjected to earthquake excitations

Fadzli M. NAZRI, Pang Yew KEN

Journal Article

Rapamycin enhances the anti-tumor activity of cabozantinib in cMet inhibitor-resistant hepatocellular

Journal Article

Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Journal Article