Optimization principle of Metro fabricated supports and hangers

1. Due to the narrow underground space of subway engineering, there are many kinds of mechanical and electrical pipelines involved, such as ventilation and air conditioning, building electrical, intelligent building, water supply and drainage, fire protection, sprinkler, communication, signal and many other professional pipelines. Due to the variety of pipeline functions, the construction methods are not the same, including air duct, water supply and fire pipe, high pressure water mist pipe, air conditioning cold water pipe, high and low voltage cable tray, communication channel, lighting, control, monitoring and other line pipes; the pipeline has different characteristics, and the installation requirements are different: strong current and weak current, pressure and no pressure, high pressure and low pressure, large pipe and small pipe, parallel and cross If the layout is not unified and planned in advance, the conflict of various professional pipelines will accompany the whole construction process.

2. In the optimization of integrated pipeline, the principle of avoiding collision is established

1) The professional pipelines installed on the comprehensive supports and hangers shall comply with the general principle of "the small pipes shall give way to the large pipes, the pressure pipes shall give way to the non pressure pipes, the weak current shall avoid the strong current, the flexible pipelines shall give way to the non flexible pipelines, and the pipes not requiring frequent maintenance shall give way to the pipes requiring frequent maintenance", that is, when the pipelines are arranged in parallel, the pipelines of electrical equipment shall be at the top, The air duct of ventilation and air conditioning is located in the middle layer, and all water pipes are located at the bottom layer.

2) Parallel direction shall be adopted between strong current and weak current, high voltage and low voltage, strong and weak current and other pipelines according to their respective specification requirements; parallel and Cross shall be able to ensure small distance construction or mutual concession required by the specification, and protective measures shall be taken in case of conflict pipeline. Deal with the interference and collision of professional pipelines, and coordinate the conflicts of air duct, water pipe, cable tray, fire protection, water supply and drainage pipe, communication and signal bridge.