预应力连续梁桥悬臂施工截面应力监控研究

摘要

During-the-cantilever-construction-of-prestressed-concrete-continuous-girder-bridge,the-sec-tion-stress-is-always-in-a-state-of-change,therefore-it-needs-real-time-monitoring.Combined-with-the-real-time-monitoring-cases-of-a-bridge-cantilever-construction,the-paper-introduces-the-theory-and-methods-of-Stress-monitoring-in-cantilever-construction-for-continuous-prestressed-beam-bridge.Main-ly-through-software-simulation-analysis-and-the-construction-actual-monitoring,the-comparison-of-practice-with-theory-is-performed.Some-suggestions-to-eliminate-the-error-are-also-put-forward.It-en-sures-the-main-beam-internal-forces-to-meet-the-design-requirements,as-well-as-the-structure-remain-a-safe-and-controllable-state.%预应力连续梁桥在悬臂施工过程中截面应力始终处于变化状态，需要对其进行实时监控。结合工程实例，对预应力混凝土连续梁桥悬臂施工过程中控制截面应力的监控原理和方法进行了介绍。主要通过软件模拟分析和施工现场监测，实行理论与实际的对比控制，并对监测结果进行了误差分析，提出了消除误差的几点建议，保证了梁内截面应力满足设计要求和施工安全。