Geogrids with triangular apertures are increasingly being used as a reinforcement element in various geotechnical structures because of their characteristics to offer uniform resistance all directions. In the present study, load–displacement triaxial geogrid longitudinal (machine direction, MD) and transverse (cross-machine XMD) directions under pullout conditions were evaluated for normal stresses. Transparent soil made fused quartz sand transparent fluid (mineral oils) was quantify...

Conventional human-involved maintenance methods for asphalt pavement pose significant challenges when applied to high-traffic road sections, often leading congestion and safety risks, as well reduced efficiency. In recent years, explorations into unmanned construction technology newly constructed expressways have yielded beneficial encouraging results. However, its application in more complex environments still needs be expanded. this study, an intelligent was the Lilong Highway Zhejiang...

Abstract The effects of solid-state NaOH pretreatment on the efficiency methane production from semi-dry anaerobic digestion rose (Rosa rugosa) stalk were investigated at various loadings (0, 1, 2, and 4% (w/w)). Methane production, process stability energy balance analyzed. Results showed that significantly improved biogas yields 30-day digestion, with increases 143.7 mL/g volatile solids (VS) added to 157.1 VS –192.1 81.8 88.8 VS–117.7 added, respectively. Solid-state resulted in higher...

Geosynthetic-encased stone column (GESC) has been proved as an effective alternative to reinforcing soft marine clay soils with low undrained shear strength. In this paper, three-dimensional (3-D) coupled mechanical and hydraulic modeling based on centrifugal model test was carried out investigate the performance of GESC-supported embankment over two different stiffness encasement (i.e., 450 kN/m 3300 kN/m). The numerical results agree well recordings. This investigation reveals that...

Abstract The interaction between parallel closely spaced tunnels is inevitable especially when tunneling in soft soil. In this research, a displacement monitoring was performed on two highway marine clay excavated by slurry shields Shanghai, China. Soil movement the and liner of first constructed tunnel induced construction second were analyzed discussed. It found that soil moved directions both perpendicular to due effects thrust, extrusion, grouting shield tunneling. maximum horizontal...

A verified numerical Fast Lagrangian Analysis of Continua (FLAC) code is used to investigate the influence concrete- and granular-block interface properties on reinforcement loads in polyester geogrid-reinforced soil (modular) block walls seated a rigid foundation. nonlinear model simulating interfaces between concrete blocks or granular leveling pads calibrated against laboratory direct shear tests implemented within FLAC code. The then simulate 3.6-, 6- 9-m-high constructed stages. results...

The non-intrusive load monitoring (NILM) is the basis and key to sensing measurement of digital grid. However, NILM algorithms, which rely on training dataset, suffer from serious accuracy degradation problems when unknown appliances are present. For this reason, appliance fictitious features (AFF) introduced in paper improve generalization capability model. First, different construction methods feature offset designed for with characteristics, such as power V-I trajectory. Second, fictional...

The investigation of shear behavior on geosynthetics-calcareous sand interface is significant to internal stability design reinforced revetment structure. A series large-scale monotonic direct tests were performed study the characteristics geotextile-calcareous (GT-CS), geogrid-calcareous (GG-CS), and unreinforced calcareous (URCS). was investigated by considering effects types including URCS, GT-CS, GG-CS interfaces, normal stresses ranging from 25 100 kPa. interaction mechanism for...

This paper presents an improved earth pressure method that considers the capacity of a wall toe to carry load predict connection loads GRS segmental walls constructed with cohesionless backfills on competent foundations. In this method, response surface model (RSM) lateral coefficient replaces Coulomb active coefficient. The parameters RSM were determined from numerical studies impacts restraint, geometry, and backfill properties distribution between reinforcement layers. unknown...

With the increase in satellite communication interference, tri-satellite time difference of arrival (TDOA) localization technique, which is an effective method to determine location interference using sensors or antennas, has been developed rapidly. The source determined through intersection TDOA lines position (LOP). However, when two LOP have mirrored points, it theoretically difficult real location. Aiming at this problem, a for eliminating based on multiple moment proposed paper. First,...

Five scaled model tests of reinforced foundation with different reinforcement length and depth (layer numbers) as well one contrast test unreinforced were carried out using transparent technique. The evolution displacement field in the procedure slide failure under strip loading investigated. results show that during settlement footing, horizontal accumulates firstly zone near lower right left corner zone, then extends upward to layers, which causes tensile reinforcements successively from...

A new type of transparent sand made a fused quartz (i.e. glass sand) and the mixture two white mineral oils was introduced as material for geotechnical visualization model tests in this paper. The possessed significant advantages transparency. In indoor natural light environment, clear visible depth 14cm, maximum can be 20cm. Laboratory including direct shear, one dimensional compression, compaction, consolidation-drained triaxial permeability were conducted to investigate properties...