某预应力连续梁桥施工控制研究
发布时间：2018-07-31 11:56
【摘要】：预应力混凝土连续梁桥具有整体性能良好、抵抗变形和地震能力强、变形缝设置少、车辆颠簸程度小、成桥后人力物力财力投入少,而且整体外形美观等诸多优点,在当今桥梁工程应用越来越普遍,成为经典的梁式结构。科学的施工控制和合理的结构设计在保障桥梁结构施工安全和质量方面共同发挥重要作用。在施工控制过程中采集到现场监测数据,为连续梁的各施工工序提供准确可信的数据,从而保证施工过程中的梁体安全和质量以及人员安全。 本文在某预应力连续梁桥各施工阶段施工方法、施工组织进行详细分析基础上,对制定施工控制流程,监测内容、监测点位置选择、监测时间点等进行较全面研究。在施工控制过程中采用高精度电子水准仪来量测连续梁梁顶标高,采用混凝土应变计和读数仪来采集连续梁内的混凝土应力。严格按照国家标准和工艺流程要求采集数据,获取了大量监测数据。最后对标高和应力数据进行分析,给出各节段的施工控制数据。 结果表明：采集方法符合相关规程,读数准确；施工控制数据精确度较高,连续梁各测点实测标高与计算标高之间的误差在规范要求范围里；连续梁应力也未超过混凝土设计强度,张拉均匀。为保证桥梁正常施工和施工质量,提供了参考依据。
[Abstract]:The prestressed concrete continuous beam bridge has many advantages, such as good overall performance, strong resistance to deformation and earthquake, less setting of deformation joints, small bumpy degree of vehicles, less investment of manpower, material and financial resources after completion of the bridge, and beautiful overall appearance, etc. Nowadays, the application of bridge engineering is becoming more and more common, becoming the classical beam structure. Scientific construction control and reasonable structural design play an important role in ensuring the safety and quality of bridge construction. The monitoring data are collected in the construction control process to provide accurate and reliable data for the construction process of continuous beam, so as to ensure the safety and quality of the beam and the safety of the personnel during the construction process. On the basis of detailed analysis of construction methods and construction organization of a prestressed continuous girder bridge in each construction stage, this paper makes a comprehensive study on the establishment of construction control flow, monitoring contents, location selection of monitoring points, monitoring time points, and so on. In the construction control process, the high precision electronic level is used to measure the top height of the continuous beam, and the concrete strain gauge and reading meter are used to collect the concrete stress in the continuous beam. Strict accordance with national standards and process requirements to collect data, access to a large number of monitoring data. Finally, the data of elevation and stress are analyzed, and the construction control data of each section are given. The results show that the collection method accords with the relevant regulations, the reading is accurate, the accuracy of construction control data is high, and the error between the measured and calculated elevation of each measuring point of continuous beam is within the required range of the specification. The stress of continuous beam does not exceed the design strength of concrete, and the tension is even. In order to guarantee the normal construction and construction quality of the bridge, the reference basis is provided.
【学位授予单位】：大连交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4
[Abstract]:The prestressed concrete continuous beam bridge has many advantages, such as good overall performance, strong resistance to deformation and earthquake, less setting of deformation joints, small bumpy degree of vehicles, less investment of manpower, material and financial resources after completion of the bridge, and beautiful overall appearance, etc. Nowadays, the application of bridge engineering is becoming more and more common, becoming the classical beam structure. Scientific construction control and reasonable structural design play an important role in ensuring the safety and quality of bridge construction. The monitoring data are collected in the construction control process to provide accurate and reliable data for the construction process of continuous beam, so as to ensure the safety and quality of the beam and the safety of the personnel during the construction process. On the basis of detailed analysis of construction methods and construction organization of a prestressed continuous girder bridge in each construction stage, this paper makes a comprehensive study on the establishment of construction control flow, monitoring contents, location selection of monitoring points, monitoring time points, and so on. In the construction control process, the high precision electronic level is used to measure the top height of the continuous beam, and the concrete strain gauge and reading meter are used to collect the concrete stress in the continuous beam. Strict accordance with national standards and process requirements to collect data, access to a large number of monitoring data. Finally, the data of elevation and stress are analyzed, and the construction control data of each section are given. The results show that the collection method accords with the relevant regulations, the reading is accurate, the accuracy of construction control data is high, and the error between the measured and calculated elevation of each measuring point of continuous beam is within the required range of the specification. The stress of continuous beam does not exceed the design strength of concrete, and the tension is even. In order to guarantee the normal construction and construction quality of the bridge, the reference basis is provided.
【学位授予单位】：大连交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4
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