A device and method for testing pull strength of an embedded hanger

Abstract

The invention relates to a device and method for testing pull strength of an embedded hanger, and belongs to the field of applications of research and experimental development results. The device includes a steel plate A, annular angle steel, channel steel supporting legs, a center hole jack, a steel plate B, a force sensor, a clamp, a force-transmitting rebar, an embedded hanger and substrate concrete. The steel plate A is a circular steel plate. The steel plate A, the angular angle steel and the channel steep supporting legs are welded to form a circular truncated cone support. The steel plate A is the top of the circular truncated cone support. The included angle between each channel steel supporting leg and the annular angle steel is 30-45 degrees. The circular truncated cone support is disposed on the substrate concrete disposed on the ground. Through the device and the method, tests can be performed under conditions of no ground fixing devices such as ground beams and foundationbolts, the device is light in weight, simple to install, time-saving, labor-saving and wide in application range, and the method has advantages of simple application, short detection time, obvious test piece damage, reasonable data collection, a small error, and is suitable for most experiments and detection mechanisms.

Description

technical field [0001] The invention belongs to the application field of research and test development results, in particular to a test device and a detection method for the pull-out strength of a pre-embedded hanger. Background technique [0002] The development of prefabricated building structures has led to the widespread application of embedded hanging parts. With the rapid increase in domestic demand for embedded hanging parts, my country urgently needs to conduct in-depth research on the safety performance of embedded hanging parts that are being used in production. Especially the research on the mechanical properties of the pullout that often occurs in practical engineering. In the research of pull-out mechanical properties test, the pull-out test device and detection method become very important. The research on pre-embedded hanging parts in our country is only in its infancy so far. According to the survey, only two students from Shenyang Jianzhu University have car...

AI Technical Summary

Problems solved by technology

The test device they used needs to fix the base concrete on the ground, so the laboratory needs to be equipped with ground beams, anchor bolts and other ground fixing devices. The test is limited by the test site, and the application range is not wide enough, and the test device The bracket is an assembled structure, which is composed of pads and steel beams. It is time-consuming and laborious to assemble and requires the participation of many test personnel.

[0003] At present, there are no relevant standards and unified testing methods for embedded hanging parts in China, so it is urgent to study the testing methods for the strength of embedded hanging parts to make up for the gap in the field of testing the pull-out strength of embedded hanging parts

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