Views: 0 Author: Site Editor Publish Time: 2026-09-22 Origin: Site
Seismic brackets are engineered assemblies designed to restrict displacement of connected MEP facilities, suppress equipment vibration, and transfer seismic loads to the main load-bearing building structure. Providing dependable protection for mechanical and electrical systems during seismic events, these assemblies withstand horizontal seismic forces from all directions and form a complete seismic support system with seismic force as the primary design load. When an earthquake strikes, they transmit seismic loads from pipelines and equipment to the primary building frame.
Seismic brackets come in multiple configurations to suit varied site requirements, covering single-pipe, portal multi-pipe, electrical conduit, air duct, integrated multi-line, and equipment seismic supports.
Type | Structure & Key Characteristics |
Lateral seismic supports and hangers | Mounted alongside pipelines to restrain side-to-side swinging; diagonal braces run parallel to the pipeline cross-section. Maximum lateral bracing spacing: 12 meters for welded steel pipes, generally 6 meters for other pipe materials. |
Longitudinal seismic supports and hangers | Used in combination with lateral bracing systems; restrain forward and backward movement along the pipe axis and resist axial seismic forces, delivering vertical and shear stiffness. Anchored to vertical building components such as columns and walls. |
Single-pipe (single-rod) | Consists of one load-bearing hanger paired with seismic diagonal braces. |
Portal | Incorporates two or more load-bearing hangers, cross beams and seismic diagonal braces. |
Integrated multi-pipeline / rectangular air duct | Listed among additional available types. |
Lateral seismic supports and hangers are mounted alongside pipelines to restrain side-to-side pipeline swinging. The maximum spacing for lateral bracing depends on pipe material. Welded steel pipes have a maximum lateral bracing spacing of 12 meters, while other pipe materials are generally limited to 6 meters. For this type of support, diagonal braces run parallel to the pipeline cross-section.
Lateral performance corresponds to the structure's ability to counteract horizontal seismic loads, also referred to as horizontal stiffness. Typical lateral seismic bracket layouts work in conjunction with shear walls, building frames and inter-story shear connections to constrain and distribute horizontal forces.
Longitudinal seismic supports and hangers are used in combination with lateral bracing systems. Their core function is to restrain forward and backward movement of pipelines along the pipe axis. These brackets primarily resist axial seismic forces, delivering vertical and shear stiffness to keep MEP assemblies stable during earthquakes.
Longitudinal seismic brackets are anchored to vertical building components such as columns and walls. Common supporting substrates include shear walls, reinforced columns and load-bearing walls to boost vertical rigidity and overall stability. The design principle is to supply axial resistance and prevent overturning or instability under seismic excitation.
Single-pipe, also known as single-rod seismic supports and hangers, consist of one load-bearing hanger paired with seismic diagonal braces.
Portal seismic supports and hangers incorporate two or more load-bearing hangers, cross beams and seismic diagonal braces.
Additional available types include integrated multi-pipeline seismic supports and rectangular air duct seismic supports.
Seismic supports and hangers are prefabricated assemblies built from three core subsystems: finished C-channel steel, pipe clamps and connecting fittings, assembled strictly following design drawings. All connectors and channel steel form rigid fitted joints, achieving zero displacement at connection points with precise positioning. This feature makes on-site installation far simpler compared with conventional support systems.
High-quality seismic supports and hangers fabricated with advanced manufacturing techniques guarantee continuous normal operation of building MEP equipment. In high-magnitude earthquakes, these systems minimise property damage, reduce the risk of casualties and limit devastating secondary disasters. This critical safety value explains why seismic bracing installation is required by building codes.
