As urbanization accelerates in China, the construction industry faces increasing challenges, particularly when it comes to deep foundation pits in water-rich sand layers. A recent study led by Huang Zhiqiang from the School of Architecture and Civil Engineering at Shenyang University of Technology sheds light on the environmental impacts associated with the covered-excavation reverse construction method. This research, published in ‘Chengshi guidao jiaotong yanjiu’ (Urban Transportation Research), is poised to influence construction practices, ensuring safety and sustainability.
The study focuses on the Shenyang North Railway Station, part of the Shenyang Metro Line 4, where the team employed construction monitoring methods to analyze the deformation effects of deep foundation pit construction on nearby structures. As Huang explains, “Understanding the deformation patterns in various construction phases is crucial for minimizing risks to surrounding environments.”
The findings reveal a clear pattern of deformation. Initially, above-ground buildings experience settlement deformation, which diminishes as excavation deepens, eventually leading to upheaval deformation. This insight is vital for developers and engineers, as it highlights the need for careful monitoring during different excavation phases to mitigate potential hazards.
Moreover, the research emphasizes the significance of excavation face positioning on underground structures. Deformation peaks when the excavation face nears the foundation depth of these structures. This understanding can guide construction teams in planning their operations more effectively, thus reducing the likelihood of structural damage and enhancing the safety of ongoing projects.
The study also uncovers a notable disparity in the impact on underground pipelines, with right-side pipelines suffering greater deformation compared to their left-side counterparts. This revelation could lead to more strategic planning in pipeline installation and management, ultimately reducing maintenance costs and improving operational efficiency.
Additionally, the deformation of power corridors is intricately linked to excavation depth. When the excavation is shallow, these corridors remain largely unaffected, but the situation changes dramatically as the depth increases. As Huang points out, “This relationship underscores the importance of proactive measures to protect critical infrastructure during deep excavations.”
The implications of this research extend beyond immediate construction practices. By fostering a deeper understanding of the interactions between construction activities and the surrounding environment, the findings can help shape regulations and guidelines that prioritize sustainability and safety. With urban spaces becoming more crowded and complex, the construction sector must adapt to these challenges, and research like Huang’s provides a roadmap for future developments.
For those interested in exploring this pivotal research further, more information can be found through Huang Zhiqiang’s affiliation at School of Architecture and Civil Engineering, Shenyang University of Technology. As cities continue to grow, studies like these will play a critical role in ensuring that construction practices evolve to meet the demands of modern urban environments.
