Seismic bracing specification

(People's Republic of China * "National Standard G650011-2010. Building seismic design code" describes the basic requirements for the design of seismic measures, the standard is to make the building water supply and drainage, heating, ventilation, air-conditioning, gas, heat, electricity, communications, fire and other mechanical and electrical engineering facilities by seismic defense, in order to reduce the damage caused by earthquakes, to prevent secondary disasters, to avoid injury and death, and reduce economic losses, and achieve Safe and reliable, technologically advanced, economically rational, easy to maintain and manage. Next to give you an introduction to the seismic brace code requirements

1, located in the seismic brace defense intensity of 6 areas in addition to category A buildings other than mechanical and electrical engineering facilities, may not make seismic calculations.

2, if the diameter of indoor water supply, hot water, fire pipe, need to be set up greater than or equal to DN65, seismic bracing should be set up in line with the requirements of Chapter 8, suspended fixed.

3, electromechanical equipment should not be set up in the use of its function may lead to the occurrence of secondary disasters such as loud and clear for the vibration isolation device for the equipment, should pay attention to the strong vibration of its impact on the connectors, and to prevent resonance phenomena occurring in the equipment and the building structure. 4, 8 degrees, 9 degrees of high-rise buildings above the water supply and drainage of vertical pipes should be taken more than a linear length of 50m vibration-resistant measures, when the linear length of over 100m should take anti-vibration measures.

5, buildings in 8 degrees, 9 degrees range of pumps and other equipment should be configured to prevent vibration foundation, and should be fixed in a fixed position, and calculate and determine the limit device.

6, seismic hangers should be reliably connected to the main body of the structure according to the project location of the seismic intensity, seismic force as the main load, by the anchors, reinforcing boom, seismic connecting members and seismic diagonal bracing.7, the pipeline shall not be traversed through the seismic joints. Across, should be installed in the seismic joints on both sides of the flexible pipe joints, or in the seismic joints set "door" bend or expansion joints.

8, boiler room, cooling machine. , transverse and longitudinal seismic support pipe heat transfer station should be reliable, steam water pipe *** with or diameter of 30 mm or more of the single appropriate use of portal seismic vapor piping rack _ rectangular cross-sectional area greater than or equal to 0.3m2 diameter greater than or equal to 0.70 m duct can be used as a seismic water vapor, set up and seismic design of vapor piping should be in accordance with the requirements of Chapter 8 of the specification.

9, seismic hangers should not limit the pipeline thermal expansion and contraction of the displacement generated by the setup and design should meet the relevant specification. 10, smoke ducts, accident ventilation ducts and equipment should be used seismic hangers. Article (strong) part of the gas:

11, new construction of rigid material cable ladder racks, cable trays and cable groove box seismic support hangers lateral ** spacing of 12m, longitudinal ** spacing of 24m.

12, with no less than 25mm should be designed for seismic design of an internal straight blame of the natural gas pipeline;<13>gas pipelines through the isolation layer should be set up valves and Shut-off valve, set seismic sensors, seismic sensors and shut-off valve interlocking device.13, seismic hanger manufacturers of seismic hanger components (including channel steel, connectors, spring nuts) in addition to the factory self-test, each batch of products should be sent to the national testing agency for mechanical testing to ensure structural safety.