An on-site sampling device and sampling method for a prefabricated shear wall rough surface

Abstract

The present invention discloses a device and method for field sampling of an assembly-type shear wall rough surface, belonging to a sampling device and method. The structure of the device provided by the invention comprises two clamping plates, a grouting box, a push-and-pull piston, an opposite-pull screw, a nut and connection devices. The grouting box includes a box body, a grouting box end plate, a rubber body, a sponge body, a grouting hole and a grouting outlet hole, the grouting hole is located at one end of the grouting box end plate, and the grouting outlet hole is located at one end of a rough surface; the push-and-pull piston includes a piston body and a push-and-pull handle, and the piston body is located in the box body; the two clamping plates are symmetrically arranged at front and back sides of the shear wall, connection devices are respectively arranged on the clamping plates, one end of the opposite-pull screw passes through the connection devices on the clamping plates, the other end of the opposite-pull screw passes through the end plate hole on the grouting box end plate, and the opposite-pull screw is fixed at the connection devices and the end plate hole through nuts. The device and method for field sampling of an assembly-type shear wall rough surface is applicable to the sampling of a vertical combination rough surface, the sample may accurately imitate and print the concave-convex model of the combination surface, and the sample may be used for combination surface roughness evaluation methods. The device and method for field sampling of an assembly-type shear wall rough surface is simple in structure and low in cost, and is repeatedly used.

Description

technical field [0001] The invention relates to a sampling device and method, in particular to an on-site sampling device and a sampling method for the rough surface of an assembled shear wall. Background technique [0002] The modernization of the construction industry is an important development direction of my country's construction industry at present, and vigorously promoting the prefabricated concrete residential system is one of the important means to realize the modernization of the construction industry. Prefabricated concrete structure refers to a concrete structure formed by assembling prefabricated concrete components through various reliable connection methods. my country's industry standard "Technical Regulations for Prefabricated Concrete Structures" (JGJ1-2014) clearly states that the integral connection between precast walls should be realized by pouring in-situ concrete between adjacent precast concrete shear walls, that is, to form a whole Type seam connec...

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Problems solved by technology

The biggest defect of its coexistence is that the above four methods are only applicable to the situation where the joint surface is placed horizontally

In addition, the sand filling method and the silicon powder stacking method need to be measured and evaluated in a windless environment; the measuring instruments used by the stylus method and the fractal dimension method are relatively complicated and cannot directly measure large prefabricated components. It can only evaluate the roughness of the bonding surface of small components or small samples, so it is limited to experimental research

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