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Updated: Jan 10, 2026

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使用CatBoost预测预压混凝土连续刚性框架桥梁的机械性能

Qingfu Li1, Xiang Wang2, Xiyu Ma1

  • 1School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China.

Scientific reports
|November 22, 2025
PubMed
概括

本研究介绍了一种CatBoost模型,用于预测预压混凝土桥的机械性能,比传统方法提高了准确性. 该模型有效地预测压力和位移,有助于稳健的基础设施设计.

关键词:
贝叶斯优化是贝叶斯的优化.建设控制工程的建设控制.有限元素模型的模型.机器学习 机器学习在SHAP分析中,我们分析了SHAP.

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Prestressed concrete is a construction technique designed to enhance the strength and durability of concrete structures. This method involves the application of a pre-set tension to high-strength steel strands used as reinforcement before the concrete is subjected to its working loads. The primary aim of prestressing is to place the concrete in a state of compression, in order to counteract the tensile forces it will experience in service. This pre-compression helps prevent crack formation in...
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Tensile Strength Considerations of Concrete

Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
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Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
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The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it...
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