胡家河矿井五连体筒仓设计计算理论及施工技术研究

发布时间：2018-05-15 12:12

本文选题：矿井 + 五连体筒仓　；参考：《西安科技大学》2015年硕士论文

【摘要】：随着经济的发展,基础建设的速度加快,能源需求量的日益增长,作为中国主要能源之一的煤炭需求量越来越大,煤矿及煤炭深加工设施的改扩建工程也相应增多。目前,筒仓作为一种特种工程结构,储煤的筒仓建设容积越来越大,直径也是越来越大,结构也越来越复杂。研究复杂条件下筒仓的设计计算理论和施工技术具有重要意义。本文以胡家河矿井块煤仓五连体筒仓结构设计及施工工程作为研究对象,研究了本设计及施工中所运用到的相关技术与设计方法。在以下几方面作了深入研究:通过对比分析钢筋混凝土筒仓、钢筒仓和砌体筒仓等的优缺点,结合胡家河矿井五连体筒仓的特点,发现最适合该项目的筒仓结构是钢筋混凝土筒仓,探讨了筒仓稳定性的影响因素。结合理论分析、力学分析和工程应用,提出设计方案,分别对筒仓上部框架、漏斗和桩基础进行设计计算,并通过地基承载力的验算确保设计的合理性。运用筒仓中贮料结拱的条件,对比分析不考虑结拱和考虑结拱两种情况下的仓壁压力。结果表明,结拱引起的压力增加量不容忽视,需要在结拱范围内对筒仓仓壁的加强钢筋和混凝土进行设计,保证结构的稳定性。应用PKPM软件对筒仓及上部框架建模验算,得到筒仓内各构件的配筋图,通过查阅SATWE结果图形和文本信息,本设计各项工程参数均符合现行规范要求,设计是合理可靠的。五连体筒仓在施工时的模板支设是施工技术的一大难题,本文深入研究了滑模施工技术,解决了一系列技术难题:针对超大平台滑模施工过程平台易变性问题,研究超大平台滑模施工中稳定性技术措施,设计使用了环形辐射梁操作平台系统,并改进了下部桁架梁;针对滑模施工过程平多平台同步提升施工难度问题,研究多平台同步提升技术的施工参数,防止了滑模过程中出现扭转,有效地保证了操作平台的稳定性和结构安全;考虑施工机具的震动及混凝土浇筑产生的冲击力等因素的影响,研究一整套控制多连体筒仓滑模施工质量的体系措施,大大提高了操作的安全性和筒仓的施工质量。
[Abstract]:With the development of economy, the speed of infrastructure construction and the increasing of energy demand, as one of the main energy sources in China, the demand for coal is increasing, and the reconstruction and extension projects of coal mine and coal deep processing facilities are also increasing. At present, silo as a kind of special engineering structure, the silo construction volume of coal storage is more and more large, diameter is also more and more large, the structure is more and more complex. It is of great significance to study the design and calculation theory and construction technology of silo under complicated conditions. In this paper, the structure design and construction engineering of five contiguous silo in Hujiahe mine block coal bunker are taken as the research object, and the related techniques and design methods used in the design and construction are studied. Through comparing and analyzing the advantages and disadvantages of reinforced concrete silo, steel silo and masonry silo, this paper combines the characteristics of five contiguous silo in Hujiahe Mine. It is found that the most suitable silo structure is reinforced concrete silo. The influencing factors of silo stability are discussed. Combined with theoretical analysis, mechanical analysis and engineering application, the design scheme is put forward. The upper frame, funnel and pile foundation of silo are designed and calculated respectively, and the rationality of the design is ensured by checking the bearing capacity of foundation. In this paper, the condition of storage material arch in silo is used, and the wall pressure of silo without or without arch formation is comparatively analyzed. The results show that the increase of pressure caused by arch can not be ignored. It is necessary to design reinforced bar and concrete for silo wall in the range of arch formation to ensure the stability of the structure. By using PKPM software to model and check the silo and the upper frame, the reinforcement diagram of each component in the silo is obtained. By consulting the SATWE result graph and text information, the engineering parameters of this design all meet the requirements of the current code, and the design is reasonable and reliable. The formwork support of five-connected silo during construction is a difficult problem in construction technology. In this paper, the sliding formwork construction technology is deeply studied, and a series of technical problems are solved: aiming at the problem of platform variability in the construction process of super-large platform sliding formwork, This paper studies the technical measures of stability in the construction of large platform sliding formwork, designs and uses the ring radiation beam operating platform system, and improves the lower truss beam, aiming at the difficulty of synchronous lifting construction of flat and multi-platform in the process of sliding formwork construction, The construction parameters of multi-platform synchronous lifting technology are studied to prevent the torsion in the process of sliding form and effectively ensure the stability and structural safety of the operating platform. Considering the influence of the vibration of construction tools and the impact force of concrete pouring, a whole set of system measures to control the construction quality of sliding form of multi-connected silo are studied. The safety of operation and the construction quality of silo are greatly improved.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU755.2

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