Honeycomb aluminum plate should pay attention to the construction points

With the development of the construction industry and the continuous improvement of construction technology, there are more and more high-rise buildings with large space and large span. Large areaHoneycomb aluminum plate吊顶施工工艺，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。Honeycomb aluminum plate适用范围及工艺原理本施工工法，适用于大空间、大跨度、大型板材的吊顶施工及以弹性变形较大结构为施工基础的吊顶施工。该工法以严格的工程测量为依据，通过对基层桁架的动态观测数据、所受荷载数据进行研究、分析、计算得出起拱数据，进而采取相应的起拱措施，保证面板安装的整体平整度。

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. According to the calculation, the sinking deformation of the middle point of the lower chord of the roof steel truss is obtained, and the ceiling arch just reaches the maximum value here. The elevation of the suspended ceiling is controlled by the hoop node plate, so the length of the node plate at the center of the steel beam is longer than that at both ends of the steel beam.(Lowest point)Longer, so as to meet the needs of the ceiling arching.

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