China State Construction Engineering (China)

Analysis of construction response for mechanized construction of metro connecting passages

To investigate the influence of mechanized pipe jacking construction for connecting passages in weathered granite strata on the settlement and deformation of left and right shield sections of metro tunnels and ground surface, this paper takes the pipe jacking project of No.1 conn...

Enhancing Knowledge Management in Green Building Engineering: A Hybrid Retrieval-Augmented Generation Approach to Support Project Assessment

Abstract Green building assessment relies heavily on manual queries of complex engineering regulations, making the introduction of knowledge management theories crucial for improving assessment efficiency. However, the inherent characteristics of engineering regulations—dense ter...

Orientation-Specific Multi-Objective Optimization of Building Envelopes for University Library Reading Spaces: A Design Framework Based on Field-Calibrated Simulation and Hierarchical Decision-Making

University library reading spaces face high occupancy and summer cooling demand, making envelope design critical to thermal comfort, energy use, and daylighting. Existing retrofits use uniform window-to-wall ratio (WWR) and shading but seldom consider orientation-dependent photot...

A twin delayed deep deterministic-based control method for a full vehicle semi-active suspension system

To improve the convergence issues of deep reinforcement learning in the control of vehicle semi-active suspension, and enhance the control effectiveness of the vehicle’s semi-active suspension, a Twin Delayed Deep Deterministic-based control framework tailored for the high-dimens...

An improved MADDPG-based framework for bidirectional safety management of construction robot interaction

Purpose Safety risks are particularly pronounced when multiple construction robots collaborate in complex construction environments. To enhance collaborative efficiency while ensuring operational safety, this study develops and evaluates, in a scaled simulation, a bidirectional s...

Research on the Performance Prediction of Fly Ash Slurry by Neural Network Based on Information Bottleneck Theory and Attention Mechanism

In grouting projects, the relationship between slurry properties and mix proportions is multivariate and nonlinear. Researchers have widely employed mathematical and computational methods to investigate this relationship, and the use of machine learning to predict the properties...

Study on Preparation and Hydration Mechanism of Sand Washing Residue Mud-Based LC3 Cement by Mechanical–Thermal Activation

To enhance the application value of sand washing residue mud (SWRM) and mitigate its adverse environmental impacts, this study focuses on the resource utilization of SWRM. The research employed a combined mechanical–thermal activation method to enhance the activity of SWRM and ut...

Torsional behavior of reinforced slag-based geopolymer concrete columns under compression

Although extensive research has been conducted on geopolymer concrete (GPC) at material level, its structural behavior under complex stress states remains inadequately understood, especially under combined compression and torsion. In this study, monotonic torsion tests under comb...

Impact of transportation on the property market at the national level: case of the USA

Purpose The purpose of this paper is to provide a high-level summary of the results of region-specific studies pertaining to the interaction between transportation and property market. The authors intend to do so by studying the relationship between transportation volume/construc...

Automatic Recognition of Category, Burial Depth, and Diameter for Underground Pipeline Using GPR Based on YOLOv12 and Machine Learning Algorithm

Abstract Underground pipelines play a vital role in urban operation and development, and the rapid and accurate detection of their distribution remains an urgent challenge. Ground-penetrating radar (GPR) technology has been widely adopted for underground pipeline detection. There...

Seismic fragility analysis of multi-line transmission structure based on gas-insulated switchgear (GIS) equipment for nuclear power applications

The stable transmission of nuclear-generated electricity is vital for grid reliability and reactor external power supply. This study addresses this critical need by developing Finite Element Models (FEMs) of Gas-Insulated Switchgear (GIS) and a representative multi-line transmiss...

Performance analysis of U-shaped viscoelastic seismic brace for pipelines

The conventional seismic brace (CSB) reduces pipeline horizontal deformation under seismic loads by providing lateral stiffness. However, CSBs fail to dissipate extra seismic energy and consume energy merely through large deformation, which easily causes local buckling and brace...