Large honeycomb aluminum ceiling, eaves construction method

随着建筑业的发展和施工技术的不断提高，大空间、大跨度的高层建筑越来越多。超大面积大型Honeycomb aluminum ceiling施工工法，介绍了龙骨安装在基层为钢桁架结构上的超大面积吊顶施工技术。该项技术通过有效的施工方法解决了在挠度变形量大的基层上安装大型板材时，平整度和牢固度的控制问题，被评为2005The first prize of scientific and technological progress of Beijing Construction Engineering Group Co., Ltd. in the year, it is believed that the technological achievement has reached the domestic leading level.,Honeycomb aluminum plate具有良好的社会推广价值。

Characteristics of construction method

1The ceiling keel is connected to the large steel truss, and the deflection deformation is large.

2The connection mode of hoop gusset plate and bolt is introduced, which eliminates the welding between the ceiling keel, keel hanging parts and the main steel beam, avoids the additional deformation of welding stress, and ensures the rigidity and strength of the main steel beam.

3Fast construction speed and high precision. The hoop and bolt shall be processed in advance and assembled on site.

41. Advanced construction technology, strong workability, close process connection and high work efficiency.5High technical content, easy quality assurance, and can produce obvious economic benefits.

The application scope and process principle of honeycomb aluminum plate This construction method is suitable for the ceiling construction of large space, large span and large plate and the ceiling construction based on the structure with large elastic deformation. The method is based on strict engineering measurement, through the study, analysis and calculation of the dynamic observation data and load data of the grass-roots truss, and then take the corresponding arch measures to ensure the overall flatness of the panel installation.

Key points of construction

1Measuring and setting out Measuring and setting out is the most precise process in the ceiling project, which plays an important role in controlling the flatness of the ceiling. The measurement and setting out shall comply with the overall and then local measurement and control procedures, and the horizontal control line of the ceiling keel shall be applied by theodolite according to the original structural axis.;According to the data required by the standard, the arch control line of the suspended ceiling keel is provided on the basis of the elliptical curve arch of the suspended ceiling. The measurement and setting-out requires scientific method, orderly calculation, step-by-step verification and reliable results.

2Dynamic observation of the lower chord members of the steel truss roof system As the steel keel of the suspended ceiling is installed on the steel truss system, the arching of the overall suspended ceiling is affected by the deformation of the steel truss system itself. The truss shall be dynamically observed once every two weeks by using electronic theodolite, laser leveling instrument, automatic leveling instrument and other precision instruments, and the number of observations shall not be less4to ensure the accuracy of the final analysis data. The observation data obtained each time are compared to understand the latest deformation of the steel truss system. The dynamic deformation network diagram is plotted according to the observed values, and the deformation trend of the steel truss is analyzed. For local irregular deformation, it can be controlled by increasing the weight of rock wool. Thus, the most accurate arch control value can be obtained.

3Local pre-arching of keel: due to the objective existence of steel keel deflection, in order to minimize the influence of sinking deflection on the flatness of ceiling decorative surface, the keel adopts the method of local pre-arching on site: fix both ends of the steel keel, jack up at the middle part of the keel span with a jack, and stop.20minutes, so that the steel keel to form the arch value37.5px-45px.Overall arching of the suspended ceiling: the method of overall arching is adopted for the suspended ceiling, and the surrounding areas of the suspended ceiling are arched to the center respectively.

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