The common construction methods for grid structures are of great significance. High altitude bulk is suitable for complex sites and flexible construction; Segmented and integral lifting can significantly improve construction efficiency and quality; High altitude sliding and overall lifting are designed for special sites and structures to reduce the risk of high-altitude operations. They provide precise matching solutions for different projects, helping them to proceed smoothly.

High-altitude bulk method

Definition: Assemble the members and nodes of the grid directly at the design position at a high altitude, usually starting from one end of the building and pushing them one by one or block by block towards the other end until the entire grid is assembled.

Scope of application: Suitable for bolted sphere node grid structures, various types of grid structures, especially for grid projects with complex building plans and special structural forms, as well as situations where construction sites are narrow and lifting equipment cannot enter.

Advantages and disadvantages: The advantage is that the construction equipment is simple and does not require large lifting equipment; The construction sequence and progress can be flexibly adjusted according to the actual situation on site. The disadvantage is that there is a large amount of high-altitude work and high construction safety risks; The construction efficiency is low and the quality control is difficult.

Strip or block installation method

Definition: Divide the grid structure into several strips along the longitudinal direction or into several block units along the planar shape, assemble them separately on the ground, and then use lifting equipment to lift these strips or block units to the design position for overall assembly.

Scope of application: Suitable for types of grid structures such as upright quadrangular pyramids and upright empty quadrangular pyramids, as well as rectangular planar grid structures with larger widths and triangular and trapezoidal planar grid structures with larger spans.

Advantages and disadvantages: The advantage is that most of the assembly work is carried out on the ground, reducing the amount of high-altitude work and improving construction safety and quality; After being divided into strips or blocks, the weight is relatively light and the requirements for lifting equipment are low. The disadvantage is that a large assembly site needs to be set up on the ground; The connection accuracy between strip or block units requires high precision.

High-altitude sliding method

Definition: Assemble the grid structure at one end of the building, and then use sliding rails or rollers to slide the grid structure along the length or other directions of the building until it reaches the design position.

Scope of application: Suitable for grid structures with rectangular or trapezoidal building plans, especially for grid projects that cross obstacles such as roads and rivers, such as sports halls and exhibition halls.

Advantages and disadvantages: The advantage is that the grid is assembled on the ground and can be operated in parallel with other construction processes of the building, shortening the overall construction period; The sliding process has little impact on the structure of the building. The disadvantage is that sliding devices such as slides or rollers need to be installed, which requires high flatness and accuracy of the sliding track; The synchronization control during the sliding process is difficult.

Integrated lifting method

Definition: After the grid is assembled as a whole on the ground, it is lifted to the design position in one go using large lifting equipment.

Scope of application: Suitable for various types of truss structures, especially for truss projects with large spans and high heights, such as large sports venues, airport terminals, etc.

Advantages and disadvantages: The advantages are fast construction speed and easy assurance of overall installation quality; Reduced the amount of high-altitude work and increased construction safety. The disadvantage is the need for large lifting equipment, which requires high lifting capacity and site conditions on the construction site; The overall assembly of the grid requires high requirements for the flatness of the site and the bearing capacity of the foundation.

Overall improvement method

Definition: After assembling the grid on the ground as a whole, use lifting equipment to lift it to the design elevation position.

Scope of application: Suitable for various types of grid structures, especially for large grid structures and grid projects with high installation heights, such as large industrial plants, exhibition halls, etc.

Advantages and disadvantages: The advantage is that it does not require large lifting equipment and lifting equipment is relatively simple; The stability of the grid structure is good and the construction safety is high during the improvement process. The disadvantage is that the requirements for equipment layout and synchronization control are relatively high; Special lifting support structures need to be set up.

Overall lifting method

Definition: After assembling the grid on the ground as a whole, use lifting equipment such as jacks to lift it up to the design elevation position.

Scope of application: Suitable for grid structures with fewer support points and larger spans, such as cylindrical and spherical grid shells.

Advantages and disadvantages: The advantage is that the lifting equipment is simple and easy to operate; The requirements for lifting capacity and site conditions on the construction site are relatively low. The disadvantage is that the synchronization control during the lifting process is difficult; The requirements for the stress performance of the grid structure are high, and detailed structural verification is needed.