CCCC Highway Consultants (China)

Safeguarded online self-training for continual tunnel-face blast-hole detection

Continual full-image blast-hole detection is required as tunnel-face imagery accumulates under weak or unreliable hole-position priors, while hidden batch annotations prevent direct supervision during online updating. This study presents safeguarded online self-training, an artif...

Influences of tunnel radius on minimum overburden thickness for underwater shield tunnels crossing structural planes

To ensure the stability and cost-effectiveness of underwater shield tunnels, reasonable design of the minimum overburden thickness is required. Nevertheless, how to rationally determine this thickness remains unclear when the coupled effects of rock structural planes and tunnel r...

Genome-wide characterization and expression divergence of germin-like protein (GLP) family in upland cotton (Gossypium hirsutum L.) in response to abiotic stress conditions

Cotton ( Gossypium hirsutum L.) is a major fiber crop that serves as the foundation of the global fiber industry. Abiotic stresses (including drought, high temperature, and salinity) have become prevalent due to climate change. Several gene families involved in various physiologi...

Mechanical Behavior and Stability Analysis of Underground Excavation Construction: Case Study of Large-Span and Variable Cross-Section Subway Crossover Tunnel

This paper presents a case study on the deformation characteristics and stress evolution of a large-span variable cross-section crossover tunnel excavated by the mining method. Three construction alternatives are compared: Scheme 1 adopts staggered excavation of twin tunnels with...

Local Geometric Perception for Climbing Robots on Double-Deck Steel Truss Bridges Using CAD Hole-Layout Priors and Depth-Derived Geometry

Close-range bridge inspection exposes personnel to risks associated with work at height and in confined spaces. Magnetic climbing robots can reduce this exposure, yet dense fastener groups and unsupported regions beyond truss member edges impose local geometric constraints on rob...

Stress and deformation response analysis of multi tower continuous span suspension bridge deck pavement under stochastic traffic loads

Multi tower continuous span suspension bridges are an emerging bridge type. The middle tower effect and continuous span effect lead to stiffness distributions substantially different from those of conventional two-tower bridges. The mechanical behavior of steel deck pavement beco...

Vibration model test and seismic performance evaluation of polypropylene fiber reinforced concrete lining of mountainside tunnels in Loess Plateau

Abstract Currently, tunnels are key infrastructure projects for traversing the Loess Plateau and ensuring rail connectivity. However, seismic damage surveys indicate that tunnels built along mountainsides in the Loess region suffer severe damage during earthquakes due to their lo...

Uncertainty Modeling and Risk Analysis of Mechanical Properties in Warm Frozen Clay for Frozen Soil Roadbed Stability

Abstract Ignoring the uncertainty of mechanical properties in frozen soil roadbed stability analysis may cause uneven settlement and cracking. Therefore, evaluating the uncertainty of frozen soil mechanical properties is essential for reliable engineering design. Considering that...

Mechanical response of highway tunnels under fault dislocation and a combined anti-dislocation technology: a case study of the Tianshan-Shengli Tunnel

Active faults are widely distributed in China, posing a significant threat to the safe operation of tunnels. Current research on anti-dislocation technologies for tunnels has predominantly focused on either articulated designs or over-excavation individually, with limited studies...

Water Transport Characteristics and Their Impaction on Stability of Unsaturated Xiashu Loess Slopes During the Entire Process of Rainfall Infiltration

The Xiashu loess in the middle and lower reaches of the Yangtze River with typical aeolian characteristics is widely distributed in the hilly areas and is the main kind of landslides in this area. The paper reveals the infiltration process of the Xiashu loess slope under differen...