长河大桥L1联连续梁桥施工关键技术研究

发布时间：2018-04-03 21:41

本文选题：连续梁　切入点：支架　出处：《湖北工业大学》2017年硕士论文

【摘要】：伴随基建行业的快速兴起,桥梁在实际生活中扮演者一个不可替代的角色。其中连续桥梁的显著特点为受力传递明确,因此在工程中的应用越来越广泛。在经济高速发展的二十一世纪,如何有效地提高运输效率进而缩短桥梁的建设周期是当前的主要难题。当前国内外的施工单位在建设连续梁桥时主要选取悬臂浇筑的施工方法。在施工过程中,需要保证临时结构的各项基本指标满足要求,确保桥梁的施工质量符合各方要求。本文针对长河大桥L1联(35m+2×55m+35m)跨变截面预应力混凝土连续箱梁桥,其0#块的满堂支架设计计算、0#块的临时固结设计以及挂篮的设计计算、施工质量控制都是要重点考虑的。本文主要对以下几方面展开研究:1)结合国内外文献以及相关工程案例,对连续梁桥进行总结,分析当前的发展状况。此外对该类桥梁的施工工艺也加以阐述,总结并分析其优点;2)根据浇筑支架的特点,对连续梁桥的0#块碗扣式满堂支架进行了设计与检算;3)对0#块临时固结进行了分析计算,保证锚固材料的正确选用、固结的抗倾覆能力和临时支墩的承压能力;4)根据悬臂浇筑的特点,对本桥进行了菱形挂篮的设计与检算;5)对连续梁的施工关键节点进行系统的研究,为施工组织方案的制定提供了理论基础,并且就此设计出合理的质量安全控制方案。
[Abstract]:With the rapid rise of infrastructure industry, bridge plays an irreplaceable role in real life.Continuous bridges are widely used in engineering because of their clear force transfer.In the 21 century of rapid economic development, how to effectively improve the transport efficiency and shorten the construction cycle of bridges is the main problem.At present, the construction methods of cantilever pouring are mainly selected in the construction of continuous beam bridges at home and abroad.In the construction process, it is necessary to ensure that the basic indexes of the temporary structure meet the requirements and the construction quality of the bridge meets the requirements of all parties.Aiming at the span of L _ 1 bridge with 35 m ~ 2 脳 55 m ~ (35 m) span prestressed concrete continuous box girder bridge with variable cross section, the design and calculation of the temporary consolidation and the design of the hanging basket for the full hall support of its 0# block should be considered in detail in this paper. The construction quality control should be taken into account.In this paper, the following aspects of the study: 1) combined with domestic and foreign literature and related engineering cases, the continuous beam bridge is summarized, and the current development situation is analyzed.In addition, the construction technology of this kind of bridge is also expounded, and its advantages are summarized and analyzed. According to the characteristics of the pouring support, the design and checking calculation of the bowl-button full support of the continuous beam bridge are carried out, and the temporary consolidation of the 0# block is analyzed and calculated.According to the characteristics of cantilever pouring, the design and calculation of diamond hanging basket for this bridge are carried out, and the key joints of continuous beam construction are systematically studied.It provides a theoretical basis for the formulation of construction organization scheme, and designs a reasonable quality and safety control scheme.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.4

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