Supporting data for "An Integrated Framework for Optimising Safety Investment Allocation For Construction Site Management in China"

This dataset provides empirical evidence for the development and validation of a Construction Safety Investment Model, combining both qualitative and quantitative data sources. It includes ten semi-structured interview transcripts with construction professionals, offering insights into accident causes, safety management practices, and investment decision-making. The dataset also contains results from Analytic Hierarchy Process (AHP) questionnaires, presenting pairwise comparison matrices, normalized weights, and consistency indicators for accident types, alongside Quality Function Deployment (QFD) matrices that evaluate the effectiveness of safety measures against indirect risk factors using Likert-scale scores. Together, these materials support research on optimizing construction safety investment through multi-objective analysis, probabilistic modeling, and risk–performance evaluation, and they can be reused for studies in construction safety, occupational risk management, and decision-support system design.