Grid supportAccording to national and industry standards,Grid supportFull range of specifications and models,Grid supportCustomer unanimous recognition!Grid support

Grid supportSuitable for large-span spatial structures, sports halls, airports, train stations, swimming pools, exhibition centers, high-rise buildings, science and technology museums, toll stations and other large-scale steel structure projects.

1Grid supportThe general principle of the truss support is that it is designed and developed in accordance with the national standard GB/T17955-2009 "Bridge Spherical Bearings" and other relevant industry specifications, and is a series of products specifically used for truss steel structure engineering.

Grid supportIt is mainly composed of an upper seat plate, a spherical PTFE sliding plate, a ball core, a base, a flat PTFE sliding plate, a stainless steel plate, and a box body.

Grid supportWorking principle: The turning angle is achieved by the relative rotation of the ball core, upper seat plate, and base; Displacement is achieved by the sliding of the base in the box; The resistance to vertical tension is achieved by the upper seat plate, base, and box body; The horizontal force is achieved by the box, base, and upper seat plate. Each type of support is divided into three types: bidirectional movable (SX), unidirectional movable (DX), and fixed (GD).

IIGrid supportDesign basis: Architectural Design Code: GB50011-2001 "Code for Seismic Design of Buildings"; Traffic standard: JTGD62-2004 "Design Specification for Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts"; National standard: GB/T17955-2009 "Technical Conditions for Spherical Bearings"; Architectural Design Code: GB50017-2003 "Code for Design of Steel Structures".

IIIGrid supportThe main performance

Overall good performance, with excellent shock absorption capability;

※ It has the ability to resist horizontal forces, ensuring that the beam does not fall during horizontal earthquakes.

It can withstand vertical loads, adapt to radial and circumferential displacement requirements, and can also adapt to angular requirements in any direction;

※ It has the ability to resist vertical tension, ensuring that the upper and lower structures do not detach during vertical earthquakes

The support transmits force through the spherical surface without any necking phenomenon, and the reaction force acting on the upper and lower structures is relatively uniform; Especially when the support can still rotate after bearing tensile and shear forces, and when the support rotates, it can bear tensile and shear forces as a spherical force transmission, and the force transmission condition is good;

The bearing does not require rubber pressure inside, and there is no impact of rubber aging on the bearing, resulting in a long service life.

4Grid supportDesign parameters

The vertical bearing capacity of the support is divided into fourteen levels: 300KN-10000KN;

The horizontal resistance of the support is 20% of the vertical bearing capacity;

The vertical tensile strength of the support is 20% or 30% of the vertical bearing capacity;

The design angle of the support is 0rad -0.08rad (can be designed separately according to user requirements)

Radial displacement of the support: ± 30mm - ± 50mm, circumferential displacement: ± 60mm - ± 100mm;

The sliding friction coefficient of the support is μ ≤ 0.03 (-25 ℃ -+60 ℃), and the rotational friction coefficient is μ=0.05-0.1 or μ ≤ 0.03. Note: Special models can be designed separately. Click to enter:Grid support