Single-crack manufacturing mold for composite structure body and using method thereof

Abstract

The invention aims to solve the problem of pouring leakage and solve the problems of prefabricated crack length and inclination angle of a single-crack test piece of a complex. A single-crack manufacturing mold comprises four parts including a trapezoidal groove positioning bottom plate, side wall plates, clamping plates and a crack size controllable assembly, wherein trapezoidal bosses are arranged at the bottom ends of the clamping plates and are self-locked in the trapezoidal groove positioning bottom plate, U-shaped grooves are formed in the side wall plates, the four clamping plates are embedded into the corresponding positions, the clamping plates and the side wall plates are positioned by means of large screws and large butterfly nuts in the horizontal direction, and the trapezoidalgroove positioning bottom plate and the side wall plates are positioned by means of small screws and small butterfly nuts in the vertical direction, so that the mold sealing performance is good, andthe leakage problem is solved. The inclination angle and length of the crack can be precisely adjusted by rotating a crack rotating device and adjusting the length of a T-shaped thin steel sheet. Thelarge screws on the two sides of a mold serve as lifting handles and bring convenience to test piece carrying. The mold has the advantages of good overall sealing performance, leakage prevention, simple disassembly and assembly, precisely controllable and adjustable inclination angle and length of the prefabricated crack, stable and reliable performance in pouring, and convenient carrying.

Description

technical field [0001] The invention relates to the technical field of mold making, and more specifically relates to a single-slit mold for composite structures and a method for using the same. Background technique [0002] In a large number of rock mass engineering, it is found that there are rocks with certain differences in rock composition and properties in contact with each other, such as: ore-rock contact zone roadway, layered ore deposit stope roof, composite filling body, etc., and the local range constitutes a typical composite rock. The mechanical properties of these composite rock masses determine their engineering stability. [0003] The instability and failure of many geotechnical engineering are caused by the expansion and penetration of internal cracks in rock mass. The mechanical properties and fracture characteristics of joint cracks usually determine the bearing capacity and fracture mode of the entire rock mass. Therefore, it is of great engineering signi...

AI Technical Summary

Problems solved by technology

[0005] 1. There are few composite specimens with through-cracks in pouring, and many scholars consider single rock mass cracks, and there are few research results on the fabrication of composite rock crack specimens with cracks under different inclination contact surfaces;

[0006] 2. The overall sealing of the mold is poor. In the process of making rock-like specimens, pouring materials, vibrating and compacting them, the splints and side wall plates in the mold will jump, causing leakage in the gaps at the joints;

Images