The extensive application of building information modeling (BIM) technology has brought opportunities and challenges to safety risk management in the field of prefabricated building construction. It is of great significance to provide timely information and knowledge for safety risk decisions in prefabricated building construction, and to display this information visually. In response, based on the ontology theory and using the Revit software, in this study we aimed to establish a monitoring system for the construction of prefabricated buildings, which was verified through a practical case. The results revealed that, first, ontology technology can be applied in the Revit software through plug-in integration, and knowledge regarding construction safety risk management in prefabricated building construction can be shared, reused, and accumulated using this system. Second, problems with the design and construction models of prefabricated buildings that do not meet the specification requirements can be detected by the monitoring system in the Revit software. Third, automatic risk identification and response methods using ontology theory and BIM technologies can effectively promote construction safety risk management performance in relation to prefabricated buildings. These findings examine the application of ontology to the field of prefabricated construction safety risk management for the first time, enrich the research on ontology technology, and contribute to safety risk management in the construction of prefabricated buildings.

To meet the growing demand for public facilities and services, many developing countries, including China, have adopted the concept of public–private partnership (PPP). However, there are many risks in PPP projects. Furthermore, these risks affect each other, which may lead to project failure. However, the existing research on the PPP risk relationship has not gone into sufficient detail. Therefore, in order to fill this literature gap, this study proposes a procedural method to analyze the correlation between PPP risks. Firstly, this study, identifies the risks of construction PPP projects in China by combining the literature review with a case study and interviews. Then, fuzzy interpretative structural modeling (FISM) is used to reflect the relationships between these risks and reveal the failure mechanisms of PPP projects. In addition, based on matrix impact cross-reference multiplication applied to a classification (MICMAC) analysis, the risk is divided into four clusters, according to the driving and dependence power, to show the relationship level of the risk. Finally, the paper compares and discusses the research results with other studies and puts forward some suggestions on PPP risks. The FISM-MICMAC method adopted in this study considers the fuzzy of the PPP risk relationship and improves upon previous studies. In addition, the method of FISM-MICMAC can provide a new risk assessment tool for risk management strategies in the field of construction engineering and management.

The population is getting older in Mainland China, which presents a huge challenge of how to support these increasing elders to enjoy a high quality of life (QoL). Due to the limited nursing institutions and Chinese traditional culture, aging in place is the most common choice for elders. Up to now, most elders in cities are living in old residential communities (ORCs) rather than new ones. Poor quality of outdoor living environment (OLE) in these ORCs cannot well support the daily life of the elders, especially for those with physical problems. A questionnaire study was conducted to explore the influence of OLE on the QoL of elders living in ORCs. A total of 107 questionnaires were completed by both elderly residents in ORCs (45.79% were male and 54.21% were female). The data was analyzed by a mix of reliability analysis, correlation analysis, and regression analysis. The results showed that physical health of elders was influenced by distance, safety, greenery, seat, recreational facilities; psychological health was predicted by width, height, and greenery; social relationship was affected by distance, safety, and recreational facilities. Based on the research results, recommendations were proposed to property management service providers and local governments, including providing more seats at a reasonable height, setting handrails alongside the long ramp, installing folding seats along building stairs, and so on.

As the most effective way to manage the surge in municipal solid waste (MSW) and global energy issues, waste‐to‐energy (WTE) incineration plants have been actively promoted by the Chinese government, and the public‐private partnership (PPP) procurement model is widely used to improve management efficiency. However, risk events have occurred frequently in this industry due to a lack of practice experience and to poor risk management. To investigate the potential risk factors in PPP WTE incineration projects in China, this paper aims to identify critical risk factors by assessing their severity and occurrence probability. Opinions of industry experts were collected via an empirical questionnaire survey. The respondents were invited to rate a total of 18 risk factors that impact the success of PPP WTE projects as gleaned from previous research. The overall results ranked risk factors based on risk impact and showed that public opposition, government decision making, defective legal and regulatory systems, environmental pollution, lack of supporting infrastructure, and government credit are the top six risk factors affecting the sustainable development of PPP WTE incineration projects. In addition, the causes and consequences of each critical risk factor are comprehensively analyzed. Lastly, practical and managerial implications are analyzed in terms of their management of these critical risks. The originality of this research lies in thoroughly identifying potential implicit risk factors according to the current social background using an empirical questionnaire survey based on case study findings. The results of this study are expected to improve risk management and facilitate the sustainable development of the PPP WTE incineration industry in China.

In recent decades, there has been a significant proliferation of literature pertaining to the evacuation of urban underground spaces. However, few studies have focused on scientometric reviews that identify research topics, evolution patterns, and trends in this field. To bridge this gap, the present study adopted a bibliometric approach by searching the literature related to underground space evacuations in the Web of Science (WOS) core database for the period 1992–2022, from which we visualized and analyzed the issuance status of the country, author, and institution, as well as the cooperation status, using Citespace software. The findings of this paper are as follows: First, there has been a consistent upward trend in the quantity of literature within this field over time. Second, Swedish authors and institutions have made important contributions to the advancement of research in this area. Third, the current research topics are concentrated on themes such as modeling and simulation, smoke control methods, integrative research on factors affecting pedestrian evacuation behavior, pedestrian walking speed under smoke-filled conditions, and the influence of wayfinding devices on exit selection/wayfinding. Finally, to advance the safety in underground spaces, future research trends should include improving basic data, refining simulation model parameters, assessing the evacuation capabilities of special populations, examining the impact of risk perception on evacuation behavior, and conducting specific research on the different risks in underground spaces. The findings may contribute to the managerial development of more comprehensive and effective emergency plans for underground spaces, thereby enhancing the survival rates and safety of pedestrians during disasters or other emergencies.

To alleviate project financial pressure and improve performance, the public-private partnership (PPP) arrangement was introduced by the central government of China to facilitate the sustainable development of infrastructure. However, arising government credit crisis from the PPP project may damage both the private’s and public’s interests, and affect the government performance of PPP projects consequently. In order to understand the influence between government credit and performance, we constructed a government credit evaluation index system by using the Wuli-Shili-Renli system theory, and conducted a questionnaire survey among people related to PPP based on 359 valid questionnaires. The results firstly indicated that government credit and performance of PPP projects are optimistic in China. Secondly, the institutional environment, financial situation, management technology and internal and external communication of government credit all have a positive impact on the government performance of PPP. Thirdly, the government credit and performance of PPP projects can be increased by the improvement of regional economic and social development. These findings enrich the knowledge system of the relationship between government credit and performance of PPP projects and contribute to clarifying the influence of government credit and performance, thus provide the basis for the government to guide PPP practice effectively.