Clamping device for pushout test on bamboo/wood member bolt pin connecting member

Abstract

The invention relates to a clamping device for a pushout test on a bamboo / wood member bolt pin connecting member. The clamping device structurally comprises an upper clamp and a lower clamp, wherein the upper clamp is used for applying a pressure force to a test piece, and the lower clamp is used for applying vertical support and lateral restraint to the test piece; the upper clamp consists of an upper clamp gripping end and an upper clamp clamping chuck, the lower clamp consists of a lower clamp gripping end and a lower clamp clamping chuck, and the lower clamp clamping chuck consists of a base, a clamping sheet, an upper clamping piece and a lower clamping piece; during testing, the test piece is placed on the lower clamp and is fastened, and the upper clamp is used for downwards applying a load to the test piece so as to carry out the test. The clamping device has the advantages that the spacing can be adjusted according to the size of the test piece, and the assembly is flexible and easy; the occurrence of phenomena that the test piece is subjected to eccentric stress and destabilized overturning during testing can be avoided; the clamp gripping ends can be manufactured according to testers, so that the application is relatively wide.

Description

technical field [0001] The invention relates to a fixture used for the push-out test of a bamboo / wood component pin-bolt connector, which belongs to the technical field of material testing. Background technique [0002] Nodes are one of the most critical factors to ensure the safe use of structures. National regulations require that "strong nodes, weak components" should be guaranteed during design. The connection mode of bamboo / wood structure is more complex, which is the focus of research at home and abroad. The joints in the form of pins have the characteristics of easy construction and reliable connection, and are widely used in bamboo / wood structure systems. Due to its high shear strength, pins are widely used as connecting parts for composite components such as bamboo / wood-concrete, bamboo / wood-steel, and bamboo-wood. [0003] Compared with common building materials such as concrete and steel, bamboo / wood materials have the characteristics of light weight, environmen...

AI Technical Summary

Problems solved by technology

Due to the low strength of the bamboo / wood material itself, the use of connectors to fix the specimen to the ground may cause deformation and destruction of the fixed end and affect the test results

The unevenness of the bottom of the specimen will also cause the phenomenon of eccentric loading, which will lead to the instability and premature failure of the specimen.

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