Chongqing Jiaotong University

Eccentric compressive behaviour of horizontal circumferential joints in concrete wind turbine towers considering joint opening

Horizontal circumferential joints are critical load-transfer regions in the concrete segments of steel–concrete hybrid wind turbine towers. However, existing studies and design methods generally treat the annular concrete section as a continuous member and do not explicitly consi...

An Accurate Vision-Based Dynamic Propagation Measurement Method for Simple Concrete Cracks

To measure dynamic crack evolution under sustained service loads during infrastructure defect inspection and structural condition assessment, a machine-vision-based methodology for high-accuracy measurement of simple crack propagation is proposed in this paper. A dynamic crack pr...

Modification of Steel Slag Aggregate in Road Engineering: Key Technologies, Performance Enhancements, and Sustainable Prospects

The growing demand for natural aggregates and continued stockpiling of steel slag have increased interest in using steel slag aggregate (SSA) in road engineering. However, delayed hydration of free calcium oxide (f-CaO) and free magnesium oxide (f-MgO), porous and rough surfaces,...

Early Jurassic Granitoids in the Pairigang Area, Tibet: Implications for the Evolution of the Neo-Tethyan Ocean and the Accretion of Juvenile Crust in the Southeastern Lhasa Block

The Jurassic represents one of the most significant periods within the widespread Mesozoic magmatism of the Lhasa Block; however, its formation age and petrogenesis have led to controversy over the deep genetic mechanisms responsible for magmatism. To address this, we present new...

A Structural–Visual Integrated Evaluation Framework for Seismic Damage Assessment of RC Double-Column Piers

The post-earthquake damage state of reinforced concrete (RC) double-column piers directly affects bridge traffic capacity and emergency response efficiency. To improve the interpretability of damage assessment, this study proposes a Structural–Visual Integrated Evaluation (SVIE)...

Scenario-Based Multi-Objective Optimization of HVAC Supply Parameters for Respiratory Particle Control in a Subway Carriage

Respiratory infectious diseases pose substantial transmission risks in enclosed public-transport environments. Under a defined fully seated reference scenario, this study examines whether the same HVAC supply parameter governs two respiratory-particle control objectives in a subw...

Collaborative Optimization of Mechanical and Alkali-Reduction Performance of Ecological Low-Alkali Porous Concrete Based on Alkalinity Gradient Regulation

Abstract Porous concrete (PC) is widely used in slope ecological restoration due to its good permeability and plantability. However, the synergistic evolution mechanism between its mechanical properties and pore alkalinity has not been systematically elucidated, which has become...