The A380 hangar is located on the north side of Terminal 3 of the Capital Airport. The total construction area of the project is 64,000 m2, with 3 floors above ground and 1 underground floor. *176.3m, depth 110m, roof elevation + 39.800m. After completion, it can accommodate 4 A380 Airbuses or 2 A380 and 4 B747 large passenger aircrafts at the same time. It is currently the world's largest aircraft maintenance warehouse. The roof structure is a three-layer welded spherical steel space frame with a total area of 39,000 m2 and a total mass of about 7,000 tons. If you have a similar project to be built, please come to consult us, we will analyze it for you for free！！ website：https://www.cnxzlf.com/solution/aircraft-hangar-airport-terminal-solutions/

1. Analysis Of Engineering Examples Of
Flat Space Frame Structure
Capital Airport A380 Hangar

2. Overview:
The A380 hangar is located on the north side of Terminal 3 of the Capital
Airport. The total construction area of the project is 64,000 m2, with 3
floors above ground and 1 underground floor. *176.3m, depth 110m, roof
elevation + 39.800m. After completion, it can accommodate 4 A380
Airbuses or 2 A380 and 4 B747 large passenger aircrafts at the same time.
It is currently the world's largest aircraft maintenance warehouse. The
roof structure is a three-layer welded spherical steel space frame with a
total area of 39,000 m2 and a total mass of about 7,000 tons. It adopts a
construction plan of ground assembly and an overall lifting in place, and
its one-time lifting area and weight can be called the world's largest . The
overall improvement of the roof structure in the construction of the
hangar is undoubtedly the biggest technical difficulty.

3. Floor plan:
The capital airport hangar can hold four Boeing 747 large passenger planes for
maintenance at the same time. Due to the special function of the hangar and
the special requirements for space, the layout adopts the layout of the large
space on one side and the auxiliary room on the other side of the hangar, so
that the large space of the hangar is made up.

4. Internal space:
The main space inside the hangar is
a large space for airplanes to dock,
and its height and span are larger
than those of ordinary buildings, and
it is required that there are no
obstacles such as pillar nets inside.

5. Facade modeling:
The overall shape of the
hangar is square, and the
facade is made of
transparent glass. With
structural features, the
whole building appears
light and simple.

6. Structural analysis:
• The roof structure design is the key to the design of a large-span hangar. The
formulation of the plan must meet the following requirements: According to the
height of the airport airspace, the highest point of the hangar roof should not
exceed 40m; the layout and size of the roof structure should meet the technical
use and setting The requirements of the suspension crane, the deformation of the
roof structure does not affect the normal operation of the suspension crane and
the hangar gate; the hangar can meet the seismic fortification requirements of an
8 degree earthquake; at the same time, it is also necessary to consider the
reasonable and reliable roof structure production, transportation, and hoisting.
Speed up the construction cycle. According to the above principles, after
comparing various schemes, a spatial structure system combining multi-layer
quadrangular pyramid space frame and bolt-welded steel bridge was selected.

8. Structural plan and
elevation:
The structure plan and elevation
of the hangar are shown in the
figure. The space frame side
beams at the gate of the hangar
are designed as a box-shaped
space truss with two-span
continuous steel beams with a
width of 9.5m and a height of
11.5m.
Structure plan
Structural elevation

10. Engineering difficulties:
• 1. The steel structure has a large span and area, which is the largest at
home and abroad: the steel structure of this project has a span of
352.60m, a depth of 114.5m, and a roof elevation of +39.800m. The roof
structure adopts three-layer obliquely placed quadrangular pyramid steel
space frame frame, supported by the lower chord, and the roof of the
hangar gate adopts a welded box-shaped steel truss, with a width of 9.5m
and a height of 11.5m. For the construction of such a large-span structure,
there is no domestic precedent and mature construction experience that
can be used for reference. The scientific construction plan is selected to
ensure the quality of the project, ensure the safety of the structure itself
and the construction safety, effectively control the construction progress,
and reasonably reduce the construction cost. The top priority of this
project and similar projects must be in-depth and detailed research.

11. Engineering difficulties:
• 2. High quality requirements for structural assembly: The steel structure of
this project adopts a three-layer obliquely placed quadrangular pyramid
steel space frame structure combined with a steel truss, with a span of
352.60m, a depth of 114.5m, and a complex structure. The measurement
of the plane control network during construction The accuracy
requirements are very high; how to take the correct assembly method,
assembly accuracy control measures according to the characteristics of
the structure itself, and how to ensure the final closure of the overall
structure after assembly requires careful study. In addition, the project has
a huge number of components and various on-site node forms. How to
combine structural span, depth, height and structural form characteristics,
take effective welding process and welding quality control measures to
ensure welding quality and overall structural assembly quality is the
difficulty of this project .

12. Engineering difficulties：
• 3. Heavy tasks and
tight schedule：
• The total construction period
for the four seats of the
Capital Airport is three years.
In order to meet the needs of
putting into use before the
Olympic Games, this project
shortened the conventional
36-month construction
period to 20 months.

13. Selection of construction plan:
• The existing construction schemes include high-altitude bulk
assembly, segmented hoisting and overall lifting, but
considering their respective advantages and disadvantages,
manpower and material resources, safety management and
other conditions, the overall lifting construction technology
was finally selected. The advantage is that a large amount of
work can be completed on the ground, reducing the amount
of tooling scaffolding, avoiding high-altitude operations, and
reducing the difficulty of project safety management. Due to
the large site area, multi-point and multi-face flow operations
can be formed, which speeds up the progress of ground
assembly and facilitates the control of engineering installation
accuracy.

14. Overall promotion technology:
• In order to meet the boundary conditions of the structural design to the
greatest extent and ensure the quality of the project; speed up the
progress of the project construction and create conditions for the follow-
up work; reduce the cost of the project; and ensure the safety of the
construction. For this project, a one-time overall lifting construction
technique is adopted. The one-time overall lifting structure has the
following advantages: the weight of the lifting structure can reach more
than 10,000 tons; the size, area and volume of the lifting structure are
large; computer control, high degree of automation; reducing the amount
of high-altitude work, the construction is safe, reliable, and lower
Construction risk; shorten the construction period and reduce the
construction cost. Based on the above analysis, we decided to adopt the
scheme of simultaneous lifting of the net frame and the truss.

15. Multi-point and multi-face ground assembly
work at the construction site

16. Improve the assembled spaceframe at one time

20. Summarize:
• Large span and high height have become the key to the
structure design of the hangar;
• Select the space structure system combining multi-layer
quadrangular pyramid space frame frame and bolt-welded
steel bridge;
• Capital Airport A380 hangar uses one-time overall lifting
technology to assemble the flat space frame structure;
• The shape is simple and light;