连续刚构桥施工监控理论及监控系统研究.pdfVIP

万方数据 摘 要 随着预应力混凝土连续刚构桥的应用越来越广，跨径越来越大，墩高越来越 高，设计和施工风险也相应的增大，特别是桥梁施工期和运营期事故频繁发生， 为了加强公路桥梁工程的质量、安全管理，优化工程建设方案，避免工程事故的 发生，提高工程建设安全性，同时为了保证刚构桥梁施工安全，必须施工过程， 特别是对主梁悬浇的整个过程进行施工监控，根据公路桥涵设计规范进行结构验 算，对施工方案模拟分析，对其可行性做出评价，并提出合理建议，实时监测结 构的应力、温度、几何状态，提供安全预警，提出施工调整值，确保结构应力、 线形符合设计要求。 以汉江大桥为实例，通过建立其变形、应力的监控系统设计，对桥梁结构进 行仿真计算，并对悬臂浇筑施工中进行结构变形控制、结构应力控制、结构稳定 控制、结构安全控制，形成一套完整的监控方法和监控技术。 关键词：刚构桥 施工监控 控制 I 万方数据 Abstract With prestressed concrete continuous rigid frame bridge applications more widely, the span increases, more and more high pier height, design and construction risk is correspondingly increased, especially bridge construction and operation of the frequent accidents occurred, in order to enhance the quality, safety management of highway bridge engineering, construction optimization program, to avoid accidents projects to improve construction safety, and in order to ensure the safety of rigid frame bridge construction, the construction process must, especially for the main beam suspension poured The whole process of construction monitoring, checking for structural design of highway bridges and culverts in accordance with specifications, simulation analysis of the construction plan, make evaluation of their feasibility, and put forward reasonable proposals, stress, temperature, real-time monitoring of the geometric structure of the state to provide security warning, adjust the value of construction put forward to en