China Mobile International Information Port: referred to as International Information Port, is the largest civil engineering project of China Mobile Group Corporation so far. Location: Located at the junction of North Sixth Ring Road and Beijing-Tibet Expressway, in Zhongguancun National Engineering Technology Innovation Base, Changping District, the recent construction scale is about 410,000 square meters, including R&D center, data center, call center and academic exchange center.
Once the data center is completed and put into use, it will become China Mobile's largest single data center and also the largest single data center among the three major telecom operators in Beijing.
The park covers an area of 1,322 acres and is a world-class information park integrating international operation support, R&D innovation, communication and display, industrial clusters and other functions. It is China Mobile's largest infrastructure construction project at present. 
1. Project Overview
This project is located in the C35 plot of the National Engineering Technology Innovation Base in Caihe New Village, Shahe Town, Changping District, Beijing. The construction unit is China Mobile Communications Co., Ltd. The project is a group building consisting of three buildings, namely Building 1#, Building 2#, and Building 3#; Building 1# and Building 2# are scientific research office buildings, and Building 3# is a public supporting building. Buildings 1# and 2# have a building height of 44.2m and 6 to 9 floors; Building 3#: Building height is 16.1m and has 3 floors. The total construction area of the project is 146,700 m², and the curtain wall area is about 70,000 m².
The exterior decorative curtain wall of this project mainly adopts unitized glass curtain wall, framed glass curtain wall, colored sunshade, full glass curtain wall, steel structure glass awning, electric skylight (mechanical and electrical matching), skylight, etc. 
The facades of buildings 1#2# and above the second floor are all in the form of unit curtain walls. A 350×50mm aluminum grille is installed outside the curtain wall. The grille spacing is a modulus of 750mm. The unit curtain wall grid is 1500mm. Some grilles are aligned with the unit grids. The grilles are composed of 5 colors from light to dark. The combination of sparse and dense arrangement of the grilles and the change of colors increase the dynamic effect of the building facade. At the same time, the grilles also play a sunshade effect. Full glass curtain walls are designed for different building facades. Behind the curtain walls are fully transparent stairs, which makes the building facade a combination of virtual and real, full of vitality, and has become one of the highlights of the building. 
2. Curtain wall engineering technology
Unit curtain wall technology : We adopt advanced unit curtain wall technology. During the design, we strictly control the deformation of the deflection of the vertical rods while meeting the design strength of the vertical rods, thus creating conditions for the most important watertight performance design of the unit curtain wall.
The key control items are as follows:
| Grid design | The height of the plate is one layer height, and the width of the plate is a combination of one natural grid and two natural grids. |
| Plug design | Units with different divisions and facade decoration styles have the same plug-in position elevation. The vertical plug-in position of the panels is selected at the indoor window sill to facilitate hoisting and indoor finishing. |
| Structural form | Horizontal sliding structure |
| Profile design | The cross-section profile adopts a double isobaric cavity and a three-way sealing system, and the vertical section profile adopts a quadruple isobaric cavity and a five-way sealing system |
| Sealed design | Through the reasonable design of profile section, the unit curtain wall sealing system forms three sealing lines of defense, namely dust sealing line, water sealing line and air sealing line. The application of reasonable sealing system and rain screen isobaric cavity principle enables the unit curtain wall to achieve the best sealing effect. |
| Hook design | The hangers are made of steel and the hangers are made of galvanized steel plate. |
Through strict process control, the air tightness of the unit curtain wall reaches level 1 and the water tightness reaches level 2. 
3. Brief description of sub-items
1. System 1: Vertical visible and horizontal invisible unit curtain wall system (vertical large and small buckle cover)
This system is one of the main glass curtain wall systems of this project. It is located on the second floor and above on the north and south sides of buildings 1# and 2# and the four facades of the inner courtyard. The main panel sizes are 1500mm×4200mm and 1500mm×4500mm .
The main surface materials and keel configuration of the system:
|
Glass Configuration |
The glass panel uses 6+16 ( air ) +6 double silver Low-E tempered insulating glass; The first partition upward from the building elevation adopts laminated glass 6+9 ( air )+5+1.52pvb+5 ; Dual silver Low-E film on the second side; |
|
Interlayer glass inner back panel |
2mm thick aluminum veneer, surface powder sprayed, coating thickness ≥40 microns. |
|
Outdoor vertical aluminum alloy buckle cover |
Outdoor vertical aluminum alloy buckle covers are available in two sizes: 220mm×90mm and 35mm×90mm . Please refer to the plan for their locations. |
|
Glass curtain wall opening method |
Top hanging and outside opening |
|
Aluminum alloy profiles |
6063T5 and 6063T6 high-precision aluminum alloy profiles; The exposed surface of the outdoor visible aluminum profile is treated with fluorocarbon spraying (three coatings), with an average coating thickness of 40 microns and the smallest local thickness ≥ 34 microns; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized . The thickness reaches AA15 grade; |
2. System 2: Fully hidden unit curtain wall system with external vertical aluminum alloy decorative blinds
This system is one of the main glass curtain wall systems of this project. It is located on the second floor and above on the east and west sides of buildings 1# and 2# . The main unit panel sizes are 1500mm×4200mm and 1500mm×4500mm .
Main surface materials and keel configuration:
|
Glass Configuration |
The glass panel uses 6+16 ( air ) +6 double silver Low-E tempered insulating glass; The first partition upward from the building elevation adopts laminated glass 6+9 ( air )+5+1.52pvb+5 ; Dual silver Low-E film on the second side; |
|
Interlayer glass inner back panel |
2mm thick aluminum veneer, surface powder spraying treatment, coating thickness ≥ 40 microns |
|
Aluminum alloy decorative shutters |
Horizontal 50mm×200mm , vertical 50mm×350mm (surface color is a flame gradient combination). |
|
Glass curtain wall opening method |
Top hanging and outside opening |
|
Aluminum alloy profiles |
6063T5 and 6063T6 high-precision aluminum alloy profiles; The exposed surface of the outdoor visible aluminum profile is treated with fluorocarbon spraying (three coatings), with an average coating thickness of 40 microns and a minimum local thickness of ≥34 microns; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized . The thickness reaches AA15 grade; |
3. System 3: Glass rib curtain wall system
The system is located in the circular corridors on the facades of buildings 1# and 2#: the main grid projection dimensions are 1500mm×4200mm; 1500mm×4500mm.
The main surface materials and keel configuration of the system:
| Glass Configuration |
The glass panel adopts 8Low-E+9A+(6+1.52PVB+6) hollow tempered laminated ultra-clear glass; Dual silver Low-E film on the second side; The glass ribs are made of 15 mm tempered ultra-clear glass; |
| Edge finishing |
The system is finished with 3mm aluminum plate edges on both the top and bottom, and the aluminum plate surface is treated with fluorocarbon spraying (three coatings); The average coating thickness is 40 microns, and the smallest local thickness is ≥35 microns; |
| No opening fan design |
Note: The color and position are subject to final confirmation based on the seal sample.
4. System 4: First floor vertical visible and horizontal hidden frame glass curtain wall
The system is located on the first floor of buildings 1# and 2#, and the main grid projection dimensions are 1500mm×750mm; 1500mm×1500mm.
The main surface materials and keel configuration of the system:
| Glass Configuration |
The glass panel uses 6+16 (air) +6 double silver Low-E tempered insulating glass; Dual silver Low-E film on the second side; |
| Outdoor vertical aluminum alloy buckle cover | 35mm×65mm |
| Glass curtain wall opening method | Top hanging and outside opening |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; The exposed surface of the outdoor visible aluminum profile is treated with fluorocarbon spraying (three coatings), with an average coating thickness of 40 microns and the smallest local thickness ≥ 34 microns; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized. The thickness reaches AA15 grade; |
Note: The color and position are subject to final confirmation based on the seal sample.
5. System Five:
Atrium fully hidden frame glass curtain wall
The system is located from the first to the fourth floors in the inner courtyard of buildings 1# and 2#.
| Main grid projection size | 1500mm×3600mm, 1500mm×900mm |
| Glass Configuration |
The glass panel uses 6+16 (air) +6 double silver Low-E tempered insulating glass; Dual silver Low-E film on the second side; |
| Glass curtain wall opening method | Top-hung outward-opening electric opening design |
| Building 2# | Facade with indoor electric sunshade roller blinds |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized with a thickness up to AA15 grade; |
Fully hidden frame skylight system
| Main grid projection size | 1500mm×3000mm |
| Glass Configuration |
8+12A+8+1.52PVB+8 tempered hollow Low-E laminated glass; Double silver Low-E film on the second side |
| No opening fan design | |
| Skylight |
The room is equipped with electric internal sunshade roller blinds; A drainage trough system is set up on three sides, the keel is made of angle steel and the panel is made of stainless steel and filled with thermal insulation rock wool. |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized. The thickness reaches AA15 grade; |
Note: The color and position are subject to final confirmation based on the seal sample.
6. System 6: Two-layer full-height hidden frame glass curtain wall system
The system is located at the corner of the 2nd floor of Building 1#2#.
| Main grid projection size | 1500mm×3600mm; 1500mm×900mm |
| Glass Configuration |
The glass panel adopts 8+18A+ (6+1.52pvb+6) tempered hollow Low-E laminated glass; 8+18A+8mm tempered hollow Low-E glass is used between the layers, and double silver Low-E film is on the second side |
| Interlayer glass inner back panel | 2mm thick aluminum veneer, surface powder spraying treatment, coating thickness ≥ 40 microns; |
| Glass curtain wall opening method | Top hanging and outside opening |
| Horizontal and vertical keel | The steel keel covered with thin-walled aluminum profile system is used as the load-bearing component |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized with a thickness up to AA15 grade; |
Note: The color and position are subject to final confirmation based on the seal sample.
7. System 7: Corridor T-shaped steel column system
The system is located at the connection position of Building 1#2#
| Main grid projection size | 1500mm×3000mm, 1500mm×1200mm |
| Glass Configuration |
The glass panel uses 8+18 (air)+6 tempered hollow Low-E laminated glass; Dual silver Low-E film on the second side; |
| Interlayer glass inner back panel | 2mm thick aluminum veneer, surface powder spraying treatment, coating thickness ≥ 40 microns; |
| Glass curtain wall opening method | Top hanging and outside opening |
| Exposed surface of T-shaped steel | Use polyurethane or acrylic polysiloxane spraying; |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized. The thickness reaches AA15 grade; |
Note: The color and position are subject to final confirmation based on the seal sample.
8. System 8: Vertical visible and horizontal hidden frame curtain wall system (tilted)
The system is located on the four facades of Building 3#
| Main grid projection size | 1500mm×1500mm; 1500mm×900mm |
| Glass Configuration |
The glass panel adopts 5+1.52pvb+5+12 (filled with argon)+6 double silver Low-E tempered insulating glass; Double silver Low-E film on the fourth side (outward inverted form), the second side (inward inverted form) |
| Interlayer glass inner back panel | 2mm thick aluminum veneer, surface powder spraying treatment, coating thickness ≥ 40 microns |
| Outdoor vertical aluminum alloy buckle cover | 300mm×50mm |
| Glass curtain wall opening method | Parallel push-out opening, the outer side is opened manually, and the inner side is opened electrically; |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; The exposed surface of the outdoor visible aluminum profile is treated with fluorocarbon spraying (three coatings), with an average coating thickness of 40 microns and the smallest local thickness ≥ 34 microns; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized. The thickness reaches AA15 grade; |
Note: The color and position are subject to final confirmation based on the seal sample.
9. System Nine: Fully Hidden Frame Curtain Wall System
The system is located on the four facades of Building 3#
| Main grid projection size | 1500mm×1500mm; 1500mm×900mm |
| Glass Configuration |
The glass panel adopts 6+12 (filled with argon) + 6 double silver Low-E tempered insulating glass; Dual silver Low-E film on the second side; |
| Interlayer glass inner back panel | 2mm thick aluminum veneer, surface powder spraying treatment, coating thickness ≥ 40 microns; |
| Glass curtain wall opening method | Top hanging and outside opening |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized. The thickness reaches AA15 grade; |
Note: The color and position are subject to final confirmation based on the seal sample.
10. System 10: Skylighting system
The system is located at the top of Building 3#
| Main grid size | 1500mm×3000mm |
| Glass Configuration | 8+12 (filled with argon)+8+1.52PVB+8 tempered hollow Low-E laminated glass, double silver Low-E film on the second side |
| No opening fan design | |
| Skylight | Outdoor electric sunshade roller blinds |
| Aluminum alloy profiles |
Made of 6063T5 and 6063T6 high-precision aluminum alloy profiles; All visible parts in the room are powder-coated, with a coating thickness of ≥40 microns; The invisible parts can be anodized. The thickness reaches AA15 grade; |
| Supporting main purlin |
Rectangular steel, support keel surface spraying treatment; Use polyurethane or acrylic polysiloxane spraying, the color is the same as the indoor aluminum color; |
Note: The color and position are subject to final confirmation based on the seal sample.
11. System 11: Aluminum veneer curtain wall ceiling system
The system is located in the ceiling of 1#, 2# and 3# buildings.
| Main grid size | Width 1000mm |
| Panel Configuration | 3mm aluminum plate is selected, and the surface of the aluminum plate is treated with fluorocarbon spraying (three coatings). The coating thickness is 40 microns, and the smallest part is ≥35 microns; |
| keel | Hot dip galvanized steel keel as support, galvanized thickness ≥ 85 microns |
China Mobile International Information Port: International Information Port for short, is the largest civil engineering project of China Mobile Group Corporation so far. It is also the largest single data center of the three major telecom operators in Beijing.