Fuquan Chen
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View article: Break-Out Resistance of Offshore Pipelines Buried in Inclined Sandy Seabed
Break-Out Resistance of Offshore Pipelines Buried in Inclined Sandy Seabed Open
Submarine pipelines are highly susceptible to lateral buckling failure under service conditions of high temperature and pressure. While existing bearing capacity evaluation methods mainly focus on flat seabeds, research on the ultimate bea…
View article: Exploring the Catalytic Mechanisms of a Newly Identified Salt-Activated Alginate Lyase from Pseudoalteromonas carrageenovora ASY5
Exploring the Catalytic Mechanisms of a Newly Identified Salt-Activated Alginate Lyase from Pseudoalteromonas carrageenovora ASY5 Open
Alginate lyases are critical enzymes in hydrolyzing alginate into alginate oligosaccharides (AOS), which are bioactive compounds known for their antioxidant properties and ability to lower serum glucose and lipid concentrations. However, e…
View article: Bidirectional Conformal Mapping for Over‐Break and Under‐Break Tunnelling and Its Application in Complex Variable Method
Bidirectional Conformal Mapping for Over‐Break and Under‐Break Tunnelling and Its Application in Complex Variable Method Open
Over‐break and under‐break excavation is very common in practical tunnel engineering with asymmetrical cavity contour, while existing conformal mapping schemes of complex variable method generally focus on tunnelling with theoretical and s…
View article: Seismic passive earth pressures of narrow cohesive backfill against gravity walls using the stress characteristics method
Seismic passive earth pressures of narrow cohesive backfill against gravity walls using the stress characteristics method Open
A solution method for the determination of seismic passive earth pressures in narrow cohesive backfill behind gravity walls has been developed using the stress characteristics method. The stress characteristics method is combined with the …
View article: Complex variable solution on asymmetrical sequential shallow tunnelling in gravitational geomaterial considering static equilibrium
Complex variable solution on asymmetrical sequential shallow tunnelling in gravitational geomaterial considering static equilibrium Open
Asymmetrical sequential excavation is common in shallow tunnel engineering, especially for large-span tunnels. Owing to the lack of necessary conformal mappings, existing complex variable solutions on shallow tunnelling are only suitable f…
View article: Bidirectional conformal mapping for over-break and under-break tunnelling and its application in complex variable method
Bidirectional conformal mapping for over-break and under-break tunnelling and its application in complex variable method Open
Over-break and under-break excavation is very common in practical tunnel engineering with asymmetrical cavity contour, while existing conformal mapping schemes of complex variable method generally focus on tunnelling with theoretical and s…
View article: Far-field displacement singularity elimination for time-dependent complex variable method on quasi-three dimensional gravitational shallow tunnelling
Far-field displacement singularity elimination for time-dependent complex variable method on quasi-three dimensional gravitational shallow tunnelling Open
This paper identifies the nonzero resultant and consequent unique displacement singularity of time-dependent complex variable method on quasi-three dimensional shallow tunnelling in visco-elastic and gravitational geomaterial. The quasi-th…
View article: Complex variable solution on over-/under-break shallow tunnelling in gravitational geomaterial with reasonable far-field displacement
Complex variable solution on over-/under-break shallow tunnelling in gravitational geomaterial with reasonable far-field displacement Open
Over-/under-break excavation is a common phenomenon in shallow tunnelling, which is nonetheless not generally considered in existing complex variable solutions. In this paper, a new equilibrium mechanical model on over-/under-break shallow…
View article: Pseudo-static Solution of Active Earth Pressure Against Relief Shelf Retaining Wall Rotating Around Heel Under Seismic Load
Pseudo-static Solution of Active Earth Pressure Against Relief Shelf Retaining Wall Rotating Around Heel Under Seismic Load Open
In practical engineering, the design process of most retaining walls must take into account earthquake resistance. It is crucial to prevent the overturning of retaining walls, particularly when the foundation's bearing capacity is weak. In…
View article: A new complex variable solution on noncircular shallow tunnelling with reasonable far-field displacement
A new complex variable solution on noncircular shallow tunnelling with reasonable far-field displacement Open
A new mechanical model on noncircular shallow tunnelling considering initial stress field is proposed in this paper by constraining far-field ground surface to eliminate displacement singularity at infinity, and the originally unbalanced t…
View article: Reasonable mechanical model on shallow tunnel excavation to eliminate displacement singularity caused by unbalanced resultant
Reasonable mechanical model on shallow tunnel excavation to eliminate displacement singularity caused by unbalanced resultant Open
When considering initial stress field in geomaterial, nonzero resultant of shallow tunnel excavation exists, which produces logarithmic items in complex potentials, and would further lead to a unique displacement singularity at infinity to…
View article: On numerical equivalence of parallel generalized solutions of mixed boundary value problem of annulus
On numerical equivalence of parallel generalized solutions of mixed boundary value problem of annulus Open
This paper provides two parallel generalized solutions on a fundamental mixed boundary value problem that a unit annulus is subjected to a partially fixed outer periphery and an arbitrary traction acting along the inner periphery by using …
View article: Parallel generalized solutions of mixed boundary value problem on partially fixed unit annulus subjected to arbitrary traction
Parallel generalized solutions of mixed boundary value problem on partially fixed unit annulus subjected to arbitrary traction Open
This paper provides two parallel solutions on the mixed boundary value problem of a unit annulus subjected to a partially fixed outer periphery and an arbitrary traction acting along the inner periphery using the complex variable method. T…
View article: Combination of simultaneous extraction–hydrolysis and intermittent feeding of tara pod for efficient production of gallic acid
Combination of simultaneous extraction–hydrolysis and intermittent feeding of tara pod for efficient production of gallic acid Open
The pods of Caesalpinia spinosa consists of gallotannins, which represent more than 50 % of its weight. The traditional chemical procedure used to produce gallic acid (GA) from tara gallotannins is a high-pollution process. Although biolog…
View article: Stability Analysis of Pile-Supported Embankments over Soft Clay Considering Soil Failure between Piles Based on Upper Bound Theorem
Stability Analysis of Pile-Supported Embankments over Soft Clay Considering Soil Failure between Piles Based on Upper Bound Theorem Open
Most analytical methods used to analyze the stability of pile-supported embankments are based on shear and bending failure of piles. However, the centrifuge test and practical engineering show that rigid pile-supported embankments have a f…
View article: On solution of conformal mapping for a lower half plane containing a symmetrical noncircular cavity
On solution of conformal mapping for a lower half plane containing a symmetrical noncircular cavity Open
In this paper, we provide a candidate solution to obtain the coefficients of the conformal mapping for a lower half plane containing a symmetrical noncircular cavity using penalty function method and modified Particle Swarm Method. The non…
View article: Undrained stability of pit-in-pit braced excavations under hydraulic uplift
Undrained stability of pit-in-pit braced excavations under hydraulic uplift Open
Pit-in-pit (PIP) excavations in an aquifer–aquitard system likely undergo catastrophic failures under the hydraulic uplift, the associated undrained stability problem, however, has not been well analyzed in the past. To this end, a hypothe…
View article: Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)2
Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)2 Open
An eco-friendly method for ι-carrageenan extraction from seaweed Eucheuma denticulatum through boiling and using a low concentration of Ca(OH)2 is reported. Compared to the traditional method of ι-carrageenan extraction using NaOH, the rep…
View article: Effect of γ-PGA Coating on Storage Quality and Respiratory Metabolism of Postharvest ‘Golden Younai’ Plum Fruit
Effect of γ-PGA Coating on Storage Quality and Respiratory Metabolism of Postharvest ‘Golden Younai’ Plum Fruit Open
In order to study the control effect of γ-polyglutamic acid (γ-PGA) coating treatment on the storage quality of postharvest ‘Golden Younai’ plum fruit and its relationship with respiration metabolism, 4 g/L γ-PGA was used to treat the post…