南仓斜拉桥施工监控技术研究

发布时间：2018-01-07 20:43

本文关键词：南仓斜拉桥施工监控技术研究　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：大跨径斜拉桥的修建推动了施工技术及结构分析设计理论的快速发展，同时也使得现代大跨径斜拉桥的施工监控问题成为一个重要的研究课题。斜拉桥施工监控就是通过控制施工过程中和成桥状态时结构的线形和内力，以使斜拉桥的成桥状态充分满足设计期望。本文以天津南仓斜拉桥桥工程施工监控为背景，主要介绍了施工监控中施工状态的计算以及状态变量量测中的应力测量。施工状态的计算就是通过建立合理的计算模型，采取切实有效的结构分析方法,对桥梁的施工过程和成桥状态进行精确的模拟分析过程，本文通过建立天津南仓斜拉桥的平面计算模型，首先分析了该桥在合理成桥索力作用下主梁结构的内力状态，，然后根据该桥的施工特点进行了施工过程仿真分析，由于该桥为跨越铁路线的城市立交，大吨位、多步骤的梁段压重施工难度大，施工工期长，而且很容易影响桥下铁路的通行，所以本文提出了采取调索的办法取消原设计施工方案梁段压重的优化方案，达到了减小工作难度，缩短施工工期的目的，此外本文还对大体积承台混凝土施工温度进行了有限元分析和监测技术研究。
[Abstract]:The construction of large - span cable - stayed bridge promotes the rapid development of construction technology and structural analysis design theory , and also makes the construction monitoring of modern large - span cable - stayed bridge an important research topic . The construction monitoring of cable - stayed bridge is by controlling the linear and internal forces of the structure during the construction process and in the bridge , so as to fully meet the design expectation . In this paper , based on the construction monitoring of the cable - stayed bridge of Tianjin Nanfang Bridge , this paper mainly introduces the calculation of the construction status in the construction monitoring and the stress measurement in the state variable measurement . The calculation of the construction status is to establish a reasonable calculation model , to take effective structural analysis methods , to accurately simulate the bridge construction process and the bridge - forming state , and to analyze the construction process simulation based on the construction characteristics of the bridge .

【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4;U448.27

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