多跨PC刚构—连续梁组合体系桥梁施工监控研究
发布时间：2019-05-19 11:09
【摘要】：PC刚构-连续梁组合体系桥梁综合了连续刚构桥和连续梁桥的优点，在力学性能、使用功能和地形适应性方面具有一定的优越性。为确保其施工全过程的安全及成桥线形和内力满足设计要求，，必须对其施工全过程进行适当的监测和控制。因此，开展PC刚构-连续梁组合体系桥梁的施工监控具有重要的工程应用价值。本文以某特大桥为工程实例，开展PC刚构-连续梁组合体系桥梁的施工全过程监控研究，研究的主要内容有： （1）运用两种不同的有限元软件建立了某特大桥的有限元计算模型，并结合桥梁的实际材料特性和边界条件修正了计算模型，为后续施工全过程分析和施工监控工作奠定了基础；根据大桥的实际施工过程，进行了施工全过程的有限元分析，计算结果为制定该桥梁的施工监控方案和预拱度设置提供理论依据。 （2）详细介绍施工监控系统建立的原则与依据，根据刚构-连续梁组合体系桥梁的特点制定了某特大桥施工监控系统的主要内容，并详细分析其施工监控的实施细则问题，对大桥的施工质量和施工安全做出了详细的要求。 （3）对比分析实测数据和理论数据，运用反演分析进行参数识别，进而修正有限元模型使其与实际施工的桥梁结构相吻合；结合实测数据和理论数据的分析了解已施工梁段的状况，运用自适应控制法指导后续梁段的标高和应力控制，最终确保某特大桥施工全过程的安全、成桥线形和内力状态满足设计要求。
[Abstract]:PC rigid frame continuous beam composite system bridge integrates the advantages of continuous rigid frame bridge and continuous beam bridge, and has certain advantages in mechanical properties, usage function and terrain adaptability. In order to ensure the safety of the whole construction process and the alignment and internal force of the bridge to meet the design requirements, it is necessary to properly monitor and control the whole construction process. Therefore, it is of great engineering application value to carry out the construction monitoring of PC rigid frame continuous beam composite system bridge. In this paper, taking a large bridge as an engineering example, the monitoring and control of the whole construction process of PC rigid frame continuous beam composite system bridge is carried out. The main contents of the study are as follows: (1) the finite element calculation model of a bridge is established by using two different finite element software, and the calculation model is modified according to the actual material characteristics and boundary conditions of the bridge. It lays a foundation for the analysis of the whole construction process and the construction monitoring work. According to the actual construction process of the bridge, the finite element analysis of the whole construction process is carried out, and the calculation results provide a theoretical basis for the establishment of the construction monitoring scheme and the pre-arch setting of the bridge. (2) this paper introduces in detail the principles and basis for the establishment of the construction monitoring system, formulates the main contents of the construction monitoring system of a super large bridge according to the characteristics of the rigid frame continuous beam composite system bridge, and analyzes in detail the detailed rules for the implementation of the construction monitoring system. The construction quality and construction safety of the bridge are required in detail. (3) comparing the measured data with the theoretical data, using inversion analysis to identify the parameters, and then modifying the finite element model to make it consistent with the actual construction of the bridge structure; Combined with the analysis of the measured data and theoretical data, the situation of the constructed beam section is understood, and the elevation and stress control of the subsequent beam section are guided by the adaptive control method, so as to ensure the safety of the whole construction process of a large bridge. The alignment and internal force state of the bridge meet the design requirements.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4
本文编号：2480679
[Abstract]:PC rigid frame continuous beam composite system bridge integrates the advantages of continuous rigid frame bridge and continuous beam bridge, and has certain advantages in mechanical properties, usage function and terrain adaptability. In order to ensure the safety of the whole construction process and the alignment and internal force of the bridge to meet the design requirements, it is necessary to properly monitor and control the whole construction process. Therefore, it is of great engineering application value to carry out the construction monitoring of PC rigid frame continuous beam composite system bridge. In this paper, taking a large bridge as an engineering example, the monitoring and control of the whole construction process of PC rigid frame continuous beam composite system bridge is carried out. The main contents of the study are as follows: (1) the finite element calculation model of a bridge is established by using two different finite element software, and the calculation model is modified according to the actual material characteristics and boundary conditions of the bridge. It lays a foundation for the analysis of the whole construction process and the construction monitoring work. According to the actual construction process of the bridge, the finite element analysis of the whole construction process is carried out, and the calculation results provide a theoretical basis for the establishment of the construction monitoring scheme and the pre-arch setting of the bridge. (2) this paper introduces in detail the principles and basis for the establishment of the construction monitoring system, formulates the main contents of the construction monitoring system of a super large bridge according to the characteristics of the rigid frame continuous beam composite system bridge, and analyzes in detail the detailed rules for the implementation of the construction monitoring system. The construction quality and construction safety of the bridge are required in detail. (3) comparing the measured data with the theoretical data, using inversion analysis to identify the parameters, and then modifying the finite element model to make it consistent with the actual construction of the bridge structure; Combined with the analysis of the measured data and theoretical data, the situation of the constructed beam section is understood, and the elevation and stress control of the subsequent beam section are guided by the adaptive control method, so as to ensure the safety of the whole construction process of a large bridge. The alignment and internal force state of the bridge meet the design requirements.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4
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