Auxiliary molding device capable of detecting tensile strength of reinforced concrete

Abstract

The invention relates to an auxiliary molding device capable of detecting the tensile strength of reinforced concrete. The auxiliary molding device consists of two symmetrical one-piece devices, wherein each one-piece device comprises a support component, and a reinforcing steel bar locating component which is fixedly connected with the support component after being used for adjusting the axial displacement of a reinforcing steel bar; each reinforcing steel bar locating component comprises an inner barrel, an outer barrel and an adjusting knob sleeve, wherein one end, close to a mainboard, of each inner barrel is fixedly connected with a threaded rod, and an inner cavity at the other end of the inner barrel is a support cavity at one end of the reinforcing steel bar; an adjusting groove is formed in the outer circle of each outer barrel; each adjusting knob sleeve is arranged on the outer circle of the corresponding outer barrel provided with the adjusting groove in a sleeving manner; the inner circle of each outer barrel is provided with an internal thread matched with the corresponding threaded rod; each inner barrel is internally provided with a cushion layer. The auxiliary molding device has the advantages that the reinforcing steel bar is additionally adopted in an axis tensile strength test piece of the concrete, so that the device can be used for simulation according to the condition of the reinforcing steel bar, and the reinforcing steel bar is kept non-shift in the vibration molding process of the test piece. Compared with the axial tension strength of plain concrete, the tensile strength values of the concrete under the different reinforcing steel bar conditions can relatively well reflect the true condition of cracking and tensioning of a reinforced concrete structure.

Description

technical field [0001] The invention relates to an auxiliary forming device for detecting the tensile strength of reinforced concrete, which is for detecting the axial tensile strength of reinforced concrete. Background technique [0002] Concrete structures often generate tensile stress due to external loads or self-shrinkage during service. When the tensile stress exceeds the ultimate tensile strength of concrete, it will crack and be damaged. Therefore, the tensile strength of concrete has been widely valued. [0003] Hydraulic concrete test procedures, such as "DL / T5150-2001", stipulate the concrete axial tensile strength and ultimate tensile value test procedures, but the test object is plain concrete without reinforcement, and it is impossible to detect the concrete resistance under the restriction of reinforcement. The tensile capacity does not match the actual force of the structure. In the research of engineering mechanics, the research on the constitutive relation...

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Problems solved by technology

[0003] Hydraulic concrete test procedures, such as "DL / T5150—2001" stipulate the concrete axial tensile strength and ultimate tensile value test procedures, but the test object is Plain concrete without steel bars cannot detect the tensile capacity of concrete under the restriction of steel bars, which does not match the actual force of the structure

In the research of engineering mechanics, the research on the constitutive relationship of reinforced concrete (or reinforced concrete) (especially under tension) is far less than that of plain concrete materials and steel bars alone, and there is no detection of actual stress conditions

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