Application of integral jacking method in general airport hangar

 1. Project overview

The Feixian General Airport Hangar Project is located in Huyang Town, Feixian County, Linyi City, Shandong Province. The project includes a general aviation complex, an airport professional building, a general aviation service center, 1⋕ hangar, 2⋕ hangars, 3⋕ hangars, 4⋕ hangars, There are 10 units in total, including crossings and gatehouses. Among them, the hangar part is designed as a reinforced concrete bent-frame column and space frame roof system, and the ball joint grid frame of the hangar roof is a rectangle as a whole. About 3870m; 2⋕ hangars and 4⋕ hangars are 43m wide and 60m long, with an area of about 2580m2. The ball joint space frame adopts the inclined quadrangular pyramid space frame structure, and the joints are mixed joints of bolt balls and welded balls. The weight of the 1⋕~4⋕ hangar grid is about 680t, supported by the bottom chord, and the height is 2.50~6.00m, which is a regular space frame.

prefab airplane hangar

prefab  hangar


2. Analysis of major and difficult points of project construction

(1) There are the following major difficulties in this project:

(2) The requirements for safe operation protection are high, especially the construction safety protection of the space frame roof structure;

(3) The installation of the jacking space frame, which is one of the key points in the control of the entire construction process, and is also related to the subsequent jacking construction;

(4) Monitoring of the lifting construction process, especially the monitoring of the integrity of the frame body and the verticality of the lifting frame body;

(5) The jacking height of this project is relatively large, the highest point is 11m, and there are many uncertain factors in the construction process; (5) The space frame structure nodes of this project are complex. In the specific construction process, there are many cross-construction parts, which require The coordination of multiple types of work is difficult to manage;

(6) The project construction period is tight, and some steel components need to be customized. How to ensure the timely and orderly supply of materials is the construction focus of the project construction stage;

(7) The project has a large amount of construction, roughly 680 t, with a large construction area, frequent high-altitude operations, a tight construction period in some construction stages, and a short construction period. Reasonable organization of construction is the management focus to ensure the progress of the site;

(8) The construction process of this project is relatively complex, involving several construction processes such as high-altitude tire frame assembly, high-altitude assembly of components, high-altitude hoisting, high-altitude welding, hydraulic lifting, and the overall difficulty is relatively high.

The space frame structure of this hangar project has a large span, large height, large size and number of steel components, high overall construction difficulty, and complex construction process. The overall jacking method for space frame structure construction has significantly improved the construction efficiency and guaranteed the project progress, and at the same time fully guarantee the construction quality, in line with the project design standards.

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