Application of Anti-seismic Supporting and Suspension Frame-Weiwu

In the mechanical and electrical systems of modern buildings, the number of various electrical and mechanical circuits is very large, the specifications and models are very complex, and the use functions are also different. In the daily work of the electromechanical system, whether the electromechanical pipeline is strong enough to fix the pipeline on the structure is the key to the normal operation of the whole electromechanical system; whether the pipeline of the electromechanical system can be guaranteed not to be damaged under the earthquake of fortification intensity, and whether some lifeline systems can be guaranteed to operate normally is also related to the guarantee. The important factor of people's life and property.

The mechanical anti-seismic bracing system is firmly connected to the pipeline, groove system and equipment of the building structure which has been designed for earthquake resistance. The bracing system with seismic force as the main load is the bracing system with gravity as the main load. The setting of the two bracing systems is not repetitive but complementary. Huang Qiaojun, Institute of Architecture, Chenggong University of Taiwan, simulated the sprinkler pipeline of a parking lot in Puli Town, Nantou County by shaking table. The conclusion is that the displacement of each point of the pipeline with the anti-seismic bracing system is 5-10 times lower than that without the anti-seismic bracing system, which effectively improves the anti-seismic performance of the pipeline system.

Application Scope of Anti-seismic Supporting and Suspension Frame in Construction Mechanical and Electrical Engineering

(1) All pipes larger than DN65mm

(2) All smoke control and exhaust system pipes

(3) All round ducts larger than 0.70M in diameter

(4) All rectangular ducts with cross-sectional area greater than 0.38_

(5) Wire bridge with weight of 15 kg/m or more

(6) All portal hangers

Classification and Layout Principles of Seismic Support and Suspension

Seismic support and suspension can fully protect electromechanical systems during earthquakes, and can be used to resist damage from horizontal and vertical seismic forces. According to the different mechanical and electrical systems protected, the anti-seismic support and hanger can be divided into pipeline anti-seismic system, wind pipe anti-seismic system and electrical (including electrical pipeline, slot and bridge) anti-seismic system.

Layout Principles of Pipeline Seismic Bracing System

(1) The lateral spacing requirements for seismic strengthening of pipelines are: pipelines with rigid materials such as grooved connection pipelines, welded steel pipes and brazed copper pipes. The maximum spacing of transverse hangers shall not exceed 12 m; pipelines with non-rigid materials such as HDPE shall not exceed 6 m.

(2) Longitudinal spacing requirements for seismic reinforcement of pipelines are as follows: pipelines with grooved connection, welded steel pipe, brazed copper pipe and other rigid materials, the maximum spacing of longitudinal hangers shall not exceed 24m; pipelines with non-rigid materials such as HDPE, the maximum spacing of transverse hangers shall not exceed 12m.

Layout principle of wind pipe seismic bracing system

(1) The maximum spacing of the lateral anti-seismic suspension of the common rigid duct is 9m, and that of the longitudinal anti-seismic suspension of the common rigid duct is 18m.

(2) Lateral anti-seismic hangers of glass fiber, plastic and other non-rigid ducts, with maximum spacing of 4.5 m and maximum longitudinal spacing of 9 M.

Layout Principles of Electrical Seismic Bracing System

(1) The maximum lateral seismic spacing of rigid electrical pipes, grooves and bridges shall not exceed 12 m, and the maximum longitudinal seismic spacing shall not exceed 24 M.

(2) The maximum transverse and longitudinal spacing of non-rigid electrical pipes, grooves and bridges shall not exceed 6m and 12m respectively.

Principles for calculation of seismic bracing system

The installation form and layout principle of anti-seismic support and hanger are determined by strict mechanical calculation results, and the calculation of seismic force must meet the requirements of the code.