Non-destructive detection method for working stress and same-beam non-uniformity of anchoring structure steel beam
A technology of anchoring structure and working stress, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, etc., and can solve the problems of working stress of steel beam and non-uniformity of the same beam.
Active Publication Date: 2017-07-14
招商局重庆公路工程检测中心有限公司 +1
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[0004] There is a common problem in the above comparative documents: the anchorage structure is regarded as a whole, only the stress of the anchorage structure is detected, and there is no discussion on the working stress of the steel beam in the anchorage structure and the unevenness of the same beam
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[0030] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.
[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.
[0032] see figure 1 , a non-destructive testing method for the working stress of the anchorage structural steel beam and the non-uniformity of the same beam provided in this embodiment, comprising the following steps:
[0033] Step 1: Install the anchorage acceleration sensor 2 on the working anchorage 1 of the anchoring structure, and connect the exposed sections of different steel...
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The invention provides a non-destructive detection method for the working stress and the same-beam non-uniformity of an anchoring structure steel beam. According to the non-destructive detection method, a model is established by using the relationship between stress and elastic wave dynamic characteristics; during the detection, resonance devices are connected to the exposed sections of an anchoring structure steel beam and are respectively provided with an acceleration sensor, an anchor acceleration sensor is arranged on an anchoring structure working anchor, and the acceleration sensors are connected to an acquisition system; a trigger device is subjected to shock excitation with force to generate elastic waves on the working anchor; the response dynamic characteristic parameters of the acceleration sensors on the working anchor and the resonance devices are tested and calculated, and stress and characteristic parameter are calibrated; the working stress of the steel beam is calculated according to the correlation with the calibrated characteristic database; and the same-beam non-uniformity is calculated according to the deviation of the response characteristic parameters. According to the present invention, with the non-destructive detection method, the working stress and the same-beam non-uniformity of the anchoring structure steel beam are simultaneously detected, such that the anchoring structure is not damaged, the detection efficiency is improved, and the important significance is provided for the assurance of the durability and the safety of the anchoring structure.
Description
technical field [0001] The invention relates to the technical field of quality detection of anchorage structures, in particular to a non-destructive detection method for the working stress of anchorage structure steel beams and the unevenness of the same beam. Background technique [0002] In the prior art, there are many methods for non-destructive testing of anchorage structures. For example, the publication number CN 101672751A filed by Sichuan Shengtuo Testing Technology Co., Ltd. in 2009 is a non-destructive testing method for testing the tension of prestressed anchorage systems. Step 1: Install the acceleration sensor on the anchor fixture and trigger device at the end of the prestressed anchorage system, and connect it to the tester with a signal cable; Step 2: Use the trigger device or automatic device on the anchor head fixture of the prestressed anchorage system Vibrate up and collect test data; Step 3: Calibrate the response-tension relationship parameters of the ...
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IPC IPC(8): G01N3/34
Inventor 张朋刘涌江徐宏武王进勇赖思静杜雁鹏
Owner 招商局重庆公路工程检测中心有限公司