A single-crack manufacturing mold for composite structure and method of using the same

Abstract

The invention aims to solve the problem of pouring leakage, and to solve the problems of the length and inclination angle of the prefabricated cracks of the single-crack test piece in the composite body. It consists of four parts: trapezoidal groove positioning bottom plate, side wall plate, splint and crack size controllable component. The bottom end of the splint is provided with a trapezoidal boss that is self-locking on the trapezoidal groove positioning bottom plate, and the side wall plate is provided with a "U" groove. Embed the 4 splints at the corresponding positions, locate the splint and the side wall plate in the horizontal direction with the large screw rod and the large wing nut, and locate the trapezoidal groove in the vertical direction to locate the bottom plate and the side wall plate, so that the mold is sealed It has better performance and can solve the leakage problem. By rotating the fissure rotating device and adjusting the length of the T-shaped thin steel sheet, the inclination and length of the fissure can be precisely adjusted. The large screws on both sides of the mold serve as handles to facilitate moving the specimen. The mould of the invention has the advantages of good overall sealing, anti-leakage, simple disassembly and assembly, precise control and adjustment of the prefabricated crack inclination angle and length, stable and reliable during pouring, and convenient handling.

Description

technical field [0001] The invention relates to the technical field of mold making, and more particularly, to a single-crack making mold for a composite structure 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 that are in contact with each other, such as: ore-rock contact zone roadway, layered deposit stope roof, composite backfill, etc. Local areas constitute typical composite rocks 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 the internal cracks of the rock mass. The mechanical properties and fracture characteristics of the joint cracks usually determine the bearing capacity and fracture mode of the entire rock mass. Therefore, it is of great engineering si...

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