First, design basis
1. Overview of construction projects;
2. Engineering design materials provided by relevant majors;
3. Design data provided by the construction unit and design institute;
4. the current national main norms, regulations and related industry standards;
4.1. Pipe Support hanger Part 1: Technical Specification GB/T17116.1-1997;
4.2 Code for Construction and Acceptance of Industrial Metal Pipeline Engineering GB50235-2010;
4.3 "Ventilation and Air Conditioning Engineering Construction Quality Acceptance Code" GB50243-2002;
4.4 Code for Design of Steel Structures GB50017-2003;
4.5. "Air Duct Support Hanger" 03K132-2003;
4.6 Indoor Pipe Support and Hanger 03S402-2003;
4.7 Cable Bridge Installation 04D701-3-2004;
4.8 Installation Drawing of Prefabricated Pipe Hanging Bracket 03SR417-2-2003;
4.9 Installation Drawing of Prefabricated Pipe Hanging Bracket 95R4171-2002;
4.10 "Prefabricated Pipe Hanging Bracket Installation Drawing" GB/T3098.1-2000.
Two, general requirements:
1. The manufacturer must be an independent legal person registered in the People's Republic of China in accordance with the Company Law of the People's Republic of China, capable of providing the bidding goods, and the registered capital of the manufacturer shall be 30 million yuan
(including) more than RMB, with R & D capability and independent laboratory, production site of no less than 5000 square meters, office area of no less than 1500 square meters, to ensure that the factory has a complete performance capacity.
2. In order to ensure the safety and quality of the project, the manufacturer must have the design and analysis software of the prefabricated support and hanger system certified by the third party (which should have the corresponding intellectual property rights), and provide specialized technical personnel to cooperate with the design institute for support and hanger
Design, provide design details and calculations for each bracket, and provide on-site installation training and instruction.
3. the manufacturer must have a perfect quality management system, should have effective ISO9001:2002 certification certificate, ISO14001 certification certificate.
4. The manufacturer shall provide the third-party test report of the support and hanger accessories and components.
Iii. Technical Requirements:
1. prefabricated support hanger is the finished support hanger assembled at the site of the factory prefabricated parts, using standard connectors and standard finished channel steel, can be adjusted according to the actual situation of the site elevation or position, but also according to the system transport
Line requirements for system expansion. Its own requirements to achieve anti-corrosion, anti-vibration and other requirements, in the field of free welding free brush anti-corrosion coating. It is connected with the original concrete with anchor bolt or embedded groove, and with the original steel structure with fixture welding free connection, and reach
To the strength of the design requirements.
2. The prefabricated support hanger is composed of finished channel steel, channel steel lock, connecting parts, tube bundle, tube bundle buckle pad, anchor bolt, etc. The connecting parts and channel steel lock can adjust the size and height of the pipe support at will through mechanical connection. The prefabricated support hanger is present
The field shall be welded free and reliably connected to the structure.
3. channel steel using cold rolling molding standard profile. The teeth (the average depth of teeth is no less than 0.9 mm) on the channel coil edge and the corresponding position on the channel lock in contact with the channel coil edge should have mechanical bite action to ensure the connection structure
Connection loosens or slips due to vibration or other unexpected force values.
4. Supporting manufacturers should have the deepening design software of prefabricated supports and hangers and the ability of secondary deepening. The cross bar, vertical bar, base, connecting node, tube bundle and anchor bolt of all prefabricated supports and hangers should meet the force safety requirements. Prefabricated support crane
Frame manufacturer shall carry out mechanical calculation for each bracket and provide the mechanical calculation for each bracket.
5. Material requirements of tube bundle and various connecting parts:
Rear bottom expansion and self-cutting anchor bolt: 8.8 grade, zinc chrome treatment
Bolt: 8.8 grade, zinc chrome treatment
Full thread screw: 4.8 grade
6. The prefabricated support and hanger system shall have the third-party testing report of the authority, including the following contents:
(1) The pipe card supporting the installation of metal pipes should be equipped with inert rubber inner liner to achieve insulation, vibration reduction and noise reduction effect, and the corresponding noise reduction performance report is required to provide, the performance is not less than 20db.
② Prefabricated support and hanger materials need to be galvanized anti-corrosion treatment, which can meet the requirements of long-term performance. The surface of channel steel shall be treated with hot-dip zinc, and the coating shall meet the requirements of GB/T 13912. All specifications single - piece finished channel steel, double - piece finished trough
The steel quality should be Q235 steel as stipulated in the national standard "Carbon Structural Steel" GB/T 700, and has the relevant national material properties (including yield strength not less than 235MPa, tensile strength not less than 370MPa, elongation after breaking not less than
26%) with a coating thickness of at least 60µm and a three-sided compression test.
③ Channel steel lock should be anti-slip test, anti-slip performance should not be less than 9kN, tensile capacity should not be less than 23kN.
④ Channel steel base material performance (including yield strength not less than 235Mpa, tensile strength not less than 370Mpa, elongation after breaking not less than 26%) report,
The coating thickness is not less than 60µm, and the vertical tensile capacity is not less than 12kN.
⑤ Prefabricated supports and hangers are made of hot-dip galvanized material. In order to ensure the corrosion resistance and durability of channel steel, according to GB/T10125-1997,
Support and hanger members shall pass 700 acid salt spray and provide corresponding test report.
⑥ Support and hanger components should be fatigue performance test, fatigue times are not less than 2 million times of the test report.
⑦ Support and hanger components should be tested for fire performance, test time is not less than 120min test report.
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