steel structure house manufacturer:steel structure testing standard
As one of the main types of building structures, steel structure has the characteristics of light structure and simple construction, so it is more widely used in the construction of large-scale workshops. However, in order to ensure the quality and safety of steel structures, we need to test them. Have:we are steel structure house manufacturer and provide steel structure house.
The bearing capacity test of welded steel ball joints and bolt ball joints of steel structures shall be carried out in accordance with the requirements of JGJ78 of "Quality Inspection and Evaluation Standard for Grid Structure Engineering". For the existing bolt ball node grid, the node can be taken out from the structure to test the ultimate bearing capacity of the node. When intercepting the bolt ball node, measures should be taken to ensure the structure is safe.
The welds in the steel structure can be detected by ultrasonic flaw detection. The inspection operation and evaluation should be based on the "sonic flaw detection and quality classification method of welded ball joint steel grid welds" JG/T3034.1 or "bolt ball joint steel grid welding" The ultrasonic flaw detection and quality classification method is carried out according to the requirements of JG/T3034.2.
The appearance quality of the weld in the steel grid shall be tested in accordance with the requirements of GB50205 of the Code for Construction Quality Acceptance of Steel Structure Engineering.
The detection of welding balls, bolt balls, high-strength bolts and rods, the detection method and the allowable deviation value shall be carried out in accordance with the provisions of JGJ78 of the “Quality Inspection and Evaluation Standard for Grid Structure Engineering”.
The wall thickness of steel structural steel pipe members can be detected by ultrasonic thickness gauge, and the finish layer should be removed before testing.we are steel structure house manufacturer and provide steel structure house.
The unevenness of the axis of the rod in the steel structure can be detected by the method of pulling the wire, and the unevenness should not exceed one thousandth of the length of the rod.
The deflection of the steel structure can be detected by laser range finder or level gauge. The number of points in each half span should not be less than 3, and there should be 1 measuring point in the span. The end measuring point should not be larger than 1m from the end bearing.
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