High energy consumption is a key constraint in conservation and carbon reduction. Existing highway tunnel lighting control systems primarily focus on ensuring maximum driving safety, which results redundant levels excessive consumption. In this study, the Sparrow Search Algorithm (SSA) used to optimize learning factors of Fuzzy Neural Network (FNN). A demand prediction model developed based exterior luminance, traffic volume, vehicle speed six sections, forming an advanced segmented dynamic...

Addressing the need for vehicle speed measurement in traffic surveillance, this study introduces an enhanced scheme combining YOLOv5s detection with Deep SORT tracking. Tailored to characteristics of highway and features, dataset data augmentation process was initially optimized. To improve detector’s recognition capabilities, Swin Transformer Block module incorporated, enhancing model’s ability capture local regions interest. <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Immersed tube tunnel has been widely used in virtue of its characteristics shallow burial, good waterproof performance, strong stratum adaptability, etc., however, it is also characterized by enclosed space, prolonged submersion structure deep water, complicated surrounding environment, particularly, case accident structure, inestimable losses will be caused, therefore, the control structural stability risk operation period especially important. This article carries out source analysis and...

Compared with submerged floating tunnels other supporting systems, anchor cable type tunnel is characterized by flexible structure arrangement, wide applicability and economical advantage. However, the mechanical features are obviously different under arrangement modes. By numerical calculation, structural displacement, bending moment strength distribution characteristics of axial force action static load, wave load water flow comparatively analyzed applicable scopes modes given.

In the aspect of constructing comprehensive assessment and early warning model typical risk tunnel construction, this article introduces a fuzzy mathematics theory to quantify factors construction. Based on constant weight index determined by analytic hierarchy process (AHP), variable calculation is added establish set hierarchical construction risks with weight, which further improves accuracy reliability warning. The cluster-based rechargeable wireless sensor networks (RWSNs) on-demand...

An improved shear-lag model is proposed to investigate the mechanism through which surface effect influences stress transfer of multilayered structures. The interlayer characterized in terms interfacial and elasticity by using Gurtin–Murdoch theory. Our calculation result shows that efficiency transfer. enhanced with decreasing thickness elastic modulus. Nonuniform large residual distribution amplifies influence on concentration.

Abstract The construction of transportation infrastructure is transferring from ground to underground, which could evacuate the urban traffic and also future trend expansion our cities. cobble stratum brings about many technical problems in underground engineering. Based on calibration test macroscopic mechanical characteristic curve, microscopic calculation parameters particle flow code simulation used for strata Urumchi were determined. According establishing numerical model pebble tunnels...

Surface elasticity and residual stress strongly influence the flexural properties of nanowire due to excessively large ratio surface area volume. In this work, we adopt linearized theory, which was proposed by Chhapadia et al., capture curvature on rigidity with rectangular cross section. Additionally, have tried study bending deformation circular nanowire. All stresses strains are measured relative relaxed state in difference between upper lower faces no external load induces additional...

In order to assuring the safety of construction, reduce digging span and economize engineering investment, by using finite element software ADINA in a certain support engineering, development rules middle wall stress strain different shapes were simulated analysed choose optimized composite shape. On this basis, variation process displacement walls with thicknesses corresponding displacements surrounding rock researched, simulation result was compared verified field monitoring. Thus shape...

Abstract During tunnel excavation and support the stability of front slope is a prerequisite for safety construction. This paper covers strength reduction method based numerical simulation observation displacement plastic zones in soil using ANSYS finite element software to determine sliding surface failure mode soil. Analyses calculation results show effect on structure zone slope.

Abstract The widely distributed cobble in the subsurface brings about lots of technical problems to underground projects. Based on physical and mechanical characteristics pebble layer, PFC particle flow software was used establish a triaxial numerical test model. Considering multifarious situations, tests were carried out with different mesoscopic parameters, influence parameters types sand pebbles macroscopic properties analyzed. Studying both contact stiffness friction coefficient response...

The underground monitoring environment is more complicated, and the rock mass rupture signal often mixed with various noises. How to identify extract failure are basis of application research on microseismic technology. In order solve this problem, a combined analysis method based qualitative quantitative was proposed in paper. Firstly, field tests empirical judgment, significant regularity signals, such as electromagnetic pulse, artificial percussion, tramcar transportation,...