高层钢框架结构制作安装关键技术研究

发布时间：2018-05-11 07:00

本文选题：钢结构 + 高层建筑　；参考：《郑州大学》2013年硕士论文

【摘要】：钢结构建筑在建筑产业中占有重要的地位和巨大的市场份额,它以其独特的优势被广泛的应用在工业建筑、民用建筑和大型公共建筑中。我国作为钢铁大国,在钢结构建筑的发展上具有很大的市场潜力,但是目前我国的钢结构仍然处于发展阶段,特别是高层钢结构的施工技术经验仍然不足,这造成了我国在高层钢结构的制作、安装中存在质量参差不齐,容易出现质量缺陷,影响正常施工工期等问题。因此要对高层钢结构的制作及安装过程中的关键点进行认真研究,通过不断的对实际工程中的关键技术的总结和归纳,为以后高层钢结构施工提供有效的经验,防止质量偏差出现,提高工程质量和工程进度。本文河南郑州裕达国贸多功能会议中心为例,对高层钢框架结构施工过程中所涉及的钢框架制作和钢框架结构的安装过程、工艺控制、质量控制等关键施工技术进行了详细的研究和总结。 (1)钢框架制作中主要论述了对箱型钢柱的材料选用为Q345B；材料切割下料主要通过数控等离子切割机、火焰纸条切割机或者数控火焰切割机：箱体的组对采用组对平台；组对后焊接采用CO2保护焊和埋弧自动焊焊接；箱体焊接采用电渣焊焊接。 (2)型钢梁主要为BH型钢梁,型钢梁组对采用组对平台,为控制外形公差,固定梁板时在组对平台上加设适当垫块防止钢梁下挠。 (3)钢框架安装过程中涉及的主要施工步骤进行了研究论述,其中高强螺栓的连接施工应在钢构件中心位置,螺栓穿入方向要一致,螺栓不能自有穿入的孔洞应使用铰刀修整,螺栓紧固分为初拧、终拧,紧固应从接头中心向两端进行。 (4)钢结构安装焊接工艺选定、焊接顺序的合理安排以及典型部位的焊接控制,现场典型焊接部位为H型钢与H型钢对接焊缝,通过试验确定合理工艺。焊接顺序为上下翼板交替焊接,分层多道焊接。 (5)压型镀锌钢板为Q235双面热镀锌达到275g/m2,安装中的补开孔洞采用等离子切割机切割,孔洞周边使用角钢或槽钢作为围梁对孔洞的加固补强。通过对实际钢结构工程的研究,总结提炼了实际施工中的关键技术点,为今后类似高层钢结构工程的施工提供了相应控制参数及控制措施。
[Abstract]:Steel structure building occupies an important position and huge market share in the construction industry. With its unique advantages, it is widely used in industrial buildings, civil buildings and large public buildings. As a big iron and steel country, China has great market potential in the development of steel structure, but the steel structure of our country is still at present at present. The development stage, especially the construction technology experience of the high rise steel structure is still insufficient, which causes the production of high rise steel structure in our country, the quality is uneven in the installation, the quality defects are easy to appear, and the normal construction time is affected. Therefore, the key points in the manufacture and installation process of the high rise steel structure should be carefully studied. Through the summary and induction of the key technology in the actual project, it will provide effective experience for the construction of high steel structure in the future, prevent the appearance of the quality deviation, improve the quality of the project and the progress of the project.
In this paper, in this paper, the multi-function conference center of Zhengzhou Yuda China World Trade Center, Henan, is used as an example to make a detailed study and summary of the key construction techniques, such as the steel frame fabrication, the installation process of the steel frame structure, the process control, the quality control and so on during the construction of the high-rise steel frame structure.
(1) in the production of steel frame, it is mainly discussed that the material for the box steel column is selected as Q345B; the material cutting material is mainly through the numerical control plasma cutting machine, the flame strip cutting machine or the numerical control flame cutting machine: the group pair platform of the box is adopted; the group to the post welding adopts the CO2 protection welding and the submerged arc automatic welding; the box welding is adopted. Electroslag welding.
(2) the type steel beam is mainly BH type steel beam, and the type steel beam group adopts the group pair platform to control the shape tolerance. When the beam plate is fixed, the suitable padding blocks are installed on the platform to prevent the steel beam from scratching.
(3) the main construction steps involved in the process of steel frame installation are discussed, in which the connection construction of high strength bolts should be in the center position of the steel structure, the direction of the bolt penetration should be consistent, the bolt can not be penetrated by the bolt should be reamed with reamer. The bolt fastening is divided into the initial screw, the final screwing, and the fastening should be carried out from the joint center to the two ends.
(4) the selection of welding technology for the steel structure, the reasonable arrangement of the welding sequence and the welding control of the typical parts. The typical welding parts in the field are the butt welds of H type steel and H type steel, and the reasonable process is determined through the test. The welding sequence is the alternating welding of the upper and lower wing plates and the multi-channel welding.
(5) the pressure galvanized galvanized steel plate is 275g/m2 for Q235 double-sided hot-dip galvanizing, and the filling hole in the installation is cut by plasma cutting machine, corner steel or channel steel is used as a girders to reinforce the hole.
Through the study of the actual steel structure engineering, the key technical points in the actual construction are summarized, and the corresponding control parameters and control measures are provided for the construction of similar high-rise steel structures in the future.

【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.13;TU974

【相似文献】