The three working faces in the south are operated at the same time.
After the column installation is completed and the size is checked, the hoop is reinforced, as shown in Figure 1.
The radius of the hoop steel rings gj1 and GJ2 is 1mm larger than that of the main pipe truss to ensure free expansion and contraction under temperature deformation and stress deformation.
After the hoop is installed, the torque of each bolt shall be checked with a torque wrench.
After the structural adhesive is firm, the adhesive shall be supplemented and sealed with weather resistant adhesive; The door bucket is wrapped with aluminum veneer in 3mm clay plate color.
The torque of stainless steel bolt M12 meets the design requirements and plays an anti-skid role; A layer of 5mm rubber isolation pad is laid on the inner side of the upper hoop.
2.
The transportation road shall be flat and the turning radius shall not be less than 15m.
Figure 1 2.2 hoop installation on the construction site ① before the construction of curtain wall keel, all components of hoop shall be processed in the factory, 10mm thick hoop steel ring GJ2 and 16mm semi-circular steel plate GB1 shall be welded in advance, setting out shall be carried out on the main keel of curtain wall according to the installation spacing of hoop, 16mm semi-circular steel plates GB2 and Gb3 shall be welded with the main keel, and all welds of hoop shall be inspected before installation, Ensure that the weld is uniform and full; ② Install 10mm thick hoop steel rings gj3 and gj4 on the pipe truss according to the hoop spacing.
Recommended reading, more wonderful! 1.
Four cranes cooperate with the hoisting, After all keels are installed, start polishing and painting.
Glass shall be transported in wooden cases.
One surface of glass and aluminum veneer shall be divided into four installation teams, with a total of 12 teams working at the same time.
The number of each wooden case is required to clearly mark the details.
Project overview Jincheng culture and Art Center project has a total construction area of 45818 square meters, including 30057.1 square meters of aboveground construction area and 15760.9 square meters of underground construction area.
Research on construction technology of mass concrete..
Figure 2 BIM model diagram of hoop Figure 3 Hoop plan 2.3 installation of glass and aluminum veneer before glass installation, the glass base shall be fixed on the glass sub dragon.
③ The accuracy and quality of steel structure hoisting column installation will affect the installation quality of the whole glass curtain wall, which is one of the keys of curtain wall construction and installation.
At the same time, another team starts to install the connectors between the main keel and the secondary keel.
Research on construction technology of low voltage electrical installation in building electrical engineering 3.
1 and Fig.
The main structural form of the north and south is the facade space wind resistant truss, which consists of three Φ one hundred and eighty × 6mm main chord, and specification Φ seventy-six × 4mm、 Φ one hundred and fourteen × 5mm web members form a single row truss system.
One layer of glass and aluminum veneer shall be installed, and the cleaner shall cooperate with the cleaner to remove one layer of steel pipe frame after cleaning, The installers install glass shelves during the day, and the steel pipe racks are removed by the shelf team at night to cooperate in an orderly and reasonable manner.
Aluminum veneer shall be pasted with unified number.
The column is 200 * 200 * 8 galvanized square pipe, the beam is 200 * 200 * 8 galvanized square pipe, the curtain wall skeleton adopts 60 * 80 * 4 galvanized square pipe and 40 * 40 * 2.5 galvanized square pipe, and the maximum size of a single glass block is 1.424 * 3.8m, Minimum 1.352 * 2.55m, 8tlow-e + 12a + 8t glass; The thickness of aluminum veneer is 2.5mm and 3mm.
Due to the tight construction period of the project, two 130t cranes and two 75t cranes are arranged on the south facade.
High strength bolts shall be tightened gradually according to 50%, 75% and 100% of the maximum torque.
1.
Before column installation, carefully check whether the specification, size, quantity and number of columns are consistent with the construction drawings.
At the same time, 10mm rubber annular isolation pad is added between the upper and lower hoops, It plays the role of vibration isolation and damping in vibration environment, as shown in Fig.
Since the curtain wall keel and the main structure of the truss shall not be welded, the hoop form shall be adopted in the construction optimization, and the steel structure of the curtain wall shall be added.
The hoisting of glass shall be coordinated by the crane, and the installation shall be started from top to bottom, with a total of nine layers decreasing layer by layer.
During installation, it shall be fixed around with a wooden plug, and then the silicone structural adhesive shall be used for edge seam gluing.
2; ③ Hoist the vertical keel of curtain wall, and then connect the hoop with 16mm semi-circular steel plates GB2 and Gb3 welded on the vertical keel of curtain wall through M30 high-strength bolts; High strength bolts and stainless steel bolts shall be tightened symmetrically from the middle to both sides.
Application of hoop method in wind resistant truss glass curtain construction 2.
If it is loose, it shall be tightened immediately.
② Steel structure transportation: 13m semi-trailer shall be used for the transportation of components.
In comprehensive consideration, two 130t and 75t truck cranes are selected for synchronous installation on both sides.
2.4 before the installation and construction of the door bucket, the measurement and setting out shall be carried out to determine the position of the column skeleton, and the door bucket skeleton shall be welded with 60 * 80 * 4 galvanized square steel with a spacing of 1245 * 1645mm; The tempered glass of the installation door shall be constructed in the order of first down and then up.
At the same time, it can expand freely during temperature stress deformation, isolate vibration and reduce vibration under vibration environment, and the lower hoop has anti sliding effect, which ensures the structural safety performance and obtains good economic benefits, It is applicable to the keel construction of external curtain wall of pipe truss, and provides reference for the construction of external curtain wall of other similar wind resistant truss.
10mm thick hoop steel rings gj1 and GJ2 are fixed on the main pipe truss through M12 stainless steel bolts according to the design spacing of the hoop.
After the connectors are installed, recheck the size and start to hoist the secondary keel.
After the reinforcement is completed, the cross beam shall be installed from bottom to top, so that the construction of steel pipe frame can be cross constructed.
3.
Key technology 2.1 glass curtain keel installation ① steel structure hoisting preparation Before construction, recheck the axis size and elevation of the original wind resistant truss, and set out the horizontal keel and vertical keel of the glass curtain wall according to the design drawings; Comprehensively consider the labor, machinery and turnover auxiliary materials required for construction, and consider the source of goods in advance.
Promotion and application: the glass curtain wall of the project adopts the pipe truss external hoop device, which is simple and convenient for construction, improves the installation speed and promotes the construction progress.
After the cross beam is installed, the steel pipe frame will be completed.
