Long-term deformation prediction and control of prestressed concrete bridge
预应力混凝土桥梁长期变形预测与控制

摘要

预应力混凝土桥梁在长期服役过程中，受温度变化、湿度影响及结构自身应力释放等因素影响，产生不可忽视的长期变形。准确预测和有效控制这些变形对保证桥梁结构安全性和使用性能至关重要。本文围绕预应力混凝土桥梁的长期变形机理，结合数值模拟与现场监测数据，提出了一种基于多因素耦合的变形预测模型。同时，探讨了针对不同变形特征的控制策略，旨在实现结构变形的科学管理和寿命延长。研究结果为桥梁设计、维护和管理提供了理论依据和技术支持。

Abstract

Prestressed concrete bridges experience significant long-term deformation over their service life due to factors such as temperature changes, humidity, and stress release within the structure. Accurately predicting and effectively controlling these deformations is crucial for ensuring the safety and performance of bridge structures. This paper focuses on the long-term deformation mechanisms of prestressed concrete bridges, combining numerical simulations with field monitoring data to propose a multi-factor coupled deformation prediction model. Additionally, it explores control strategies tailored to different deformation characteristics, aiming to achieve scientific management and extended service life of the structure. The research findings provide theoretical basis and technical support for bridge design, maintenance, and management.