内爬式塔式起重机支护系统与受力分析的研究
发布时间：2019-04-02 19:04
【摘要】：在科技高速发展的今天,先进的结构理论、高效的计算技术、新型的施工技术以及高强、轻质的建筑材料,为建筑高度的进一步突破创造了有利条件,而人们对建筑高度的激烈竞争,更促使了世界建筑高度排行榜的更新换代。由于内爬式塔式起重机可节约塔身、减少垂直载荷、爬升高度不受限制等优势,是高层、超高层建筑施工中重要的设备。同时内爬式塔机的爬升依靠的是其支护系统,因此完善内爬式塔式起重机的超高层支护技术的研究方法就成为了一个新课题,具有非常现实的意义。在建的沈阳市府恒隆广场双塔楼高度将达到350米,是目前东北第一高建筑物,属于超高层建筑物。该建筑物在施工中使用两台动臂式塔机进行吊装作业,由于空问限制和建筑物自身结构特点使塔机(ZSL2700)必须在建筑核心筒墙体内以悬爬的方式进行工作。本课题对该内爬式塔式起重机的内爬支护系统进行研究,包括支护结构和墙体内的预埋件的设计及计算。本课题研究的主要内容包括以下几个方面：(1)根据ZSL2700动臂式内爬塔机的结构和沈阳市府恒隆广场的核心筒结构对该塔机的爬升规划进行分析研究；(2)依据爬升规划和ZSL2700塔机的自身性能和特点,从该塔机支撑结构的受力和结构布置两个角度研究,确定其支撑结构组成方案；(3)根据所研究的ZSL2700塔机支撑结构,为了减少主梁结构对建筑物传递的作用力,结构的主梁采用端弯矩弱化这一创新技术,确保塔机在建筑物顶层较薄墙体支护中安全的工作；(4)在确定支撑结构基础上,采用ANSYS有限元分析方法对支撑结构的力学状态进行研究,并结合手工计算方法分析结构受力的极限状态,保证结构的合理性和安全可靠性；(5)研究不同墙体厚度的预埋件结构形式,并利用ZSL2700塔机支撑结构对墙体的作用力分析预埋件的受力状态,确保预埋件的结构强度。根据计算分析结果,分析并确定预埋件的合理结构形式,并在施工现场进行检验以确定其合理性。本课题所研究开发的内爬式塔机的支护结构和预埋件结构由南京中异建机重工有限公司生产,并在中建三局第二建设工程有限公司所承担的沈阳市府恒隆广场双塔楼建筑施工中成功应用。确保沈阳市府恒隆广场双塔楼的顺利施工,本课题的研究方法为未来同类建筑物施工中塔式起重机的支护提供了可以借鉴的理论技术和实际工程经验。
[Abstract]:With the rapid development of science and technology today, advanced structural theory, efficient computing technology, new construction technology and high-strength, light-weight building materials have created favorable conditions for further breakthrough in building height. And people's intense competition to the building height, promoted the renewal of the world building height ranking. Since the inner climbing tower crane can save the tower body, reduce the vertical load, and the climbing height is not limited, it is an important equipment in the construction of high-rise and super-high-rise buildings. At the same time, the climbing of the inner-climbing tower crane depends on its support system, so the research method of perfecting the super-high-rise support technology of the inner-climbing tower crane has become a new subject, which has very practical significance. The double tower of Fuhang long Square in Shenyang will reach 350 meters in height, which is the tallest building in northeast China and belongs to the super-high-rise building. In the construction of the building, two boom tower cranes are used to carry out the lifting operation. Due to the space restriction and the structural characteristics of the building itself, the tower crane (ZSL2700) must work in the wall of the core tube of the building in a way of hanging and climbing. In this paper, the internal climbing support system of the tower crane is studied, including the design and calculation of the supporting structure and the embedded parts in the wall. The main contents of this study include the following aspects: (1) according to the structure of ZSL2700 movable-arm type inner climbing tower crane and the core tube structure of Shenyang Henglong Square, the climbing plan of this tower crane is analyzed and studied; (2) according to the climbing plan and ZSL2700 tower crane's own performance and characteristics, from the two angles of force and structure arrangement of the tower crane support structure, the composition scheme of the support structure is determined. (3) according to the ZSL2700 tower crane supporting structure, in order to reduce the transfer force of the main beam structure to the building, the end bending moment weakening technology is adopted in the main beam of the structure. Ensure that the tower crane works safely in the thin wall support on the top floor of the building; (4) on the basis of determining the bracing structure, the mechanical state of the brace structure is studied by using ANSYS finite element analysis method, and the limit state of the structural force is analyzed with manual calculation method to ensure the rationality and safety and reliability of the structure; (5) the structure form of pre-buried parts with different wall thickness is studied, and the force of ZSL2700 tower crane supporting structure on the wall is analyzed to ensure the structural strength of the embedded parts. According to the results of calculation and analysis, the reasonable structural form of the embedded parts is analyzed and determined, and the rationality of the embedded parts is verified in the construction site. The support structure and pre-buried structure of the inner climbing tower crane developed by this subject are produced by Nanjing Zhongxi Construction Machinery heavy Industry Co., Ltd. It is successfully applied in the construction of the double tower building of Fuhang long Square in Shenyang City, which is undertaken by the second Construction Engineering Co., Ltd of the third Bureau of China Construction. In order to ensure the smooth construction of the double tower building in Henglong Square of Shenyang City, the research method of this subject provides theoretical technology and practical engineering experience for the support of tower cranes in the construction of similar buildings in the future.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU61
本文编号：2452838
[Abstract]:With the rapid development of science and technology today, advanced structural theory, efficient computing technology, new construction technology and high-strength, light-weight building materials have created favorable conditions for further breakthrough in building height. And people's intense competition to the building height, promoted the renewal of the world building height ranking. Since the inner climbing tower crane can save the tower body, reduce the vertical load, and the climbing height is not limited, it is an important equipment in the construction of high-rise and super-high-rise buildings. At the same time, the climbing of the inner-climbing tower crane depends on its support system, so the research method of perfecting the super-high-rise support technology of the inner-climbing tower crane has become a new subject, which has very practical significance. The double tower of Fuhang long Square in Shenyang will reach 350 meters in height, which is the tallest building in northeast China and belongs to the super-high-rise building. In the construction of the building, two boom tower cranes are used to carry out the lifting operation. Due to the space restriction and the structural characteristics of the building itself, the tower crane (ZSL2700) must work in the wall of the core tube of the building in a way of hanging and climbing. In this paper, the internal climbing support system of the tower crane is studied, including the design and calculation of the supporting structure and the embedded parts in the wall. The main contents of this study include the following aspects: (1) according to the structure of ZSL2700 movable-arm type inner climbing tower crane and the core tube structure of Shenyang Henglong Square, the climbing plan of this tower crane is analyzed and studied; (2) according to the climbing plan and ZSL2700 tower crane's own performance and characteristics, from the two angles of force and structure arrangement of the tower crane support structure, the composition scheme of the support structure is determined. (3) according to the ZSL2700 tower crane supporting structure, in order to reduce the transfer force of the main beam structure to the building, the end bending moment weakening technology is adopted in the main beam of the structure. Ensure that the tower crane works safely in the thin wall support on the top floor of the building; (4) on the basis of determining the bracing structure, the mechanical state of the brace structure is studied by using ANSYS finite element analysis method, and the limit state of the structural force is analyzed with manual calculation method to ensure the rationality and safety and reliability of the structure; (5) the structure form of pre-buried parts with different wall thickness is studied, and the force of ZSL2700 tower crane supporting structure on the wall is analyzed to ensure the structural strength of the embedded parts. According to the results of calculation and analysis, the reasonable structural form of the embedded parts is analyzed and determined, and the rationality of the embedded parts is verified in the construction site. The support structure and pre-buried structure of the inner climbing tower crane developed by this subject are produced by Nanjing Zhongxi Construction Machinery heavy Industry Co., Ltd. It is successfully applied in the construction of the double tower building of Fuhang long Square in Shenyang City, which is undertaken by the second Construction Engineering Co., Ltd of the third Bureau of China Construction. In order to ensure the smooth construction of the double tower building in Henglong Square of Shenyang City, the research method of this subject provides theoretical technology and practical engineering experience for the support of tower cranes in the construction of similar buildings in the future.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU61
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