A jig for push-out test of pin-bolt joints of bamboo/wood components

Abstract

The present invention is a kind of fixture used for push-out test of bamboo / wood member pin bolt connector, its structure is to comprise upper fixture and lower fixture, wherein the upper fixture exerts pressure on the test piece, and the lower fixture applies vertical support and lateral support to the test piece. direction constraints; the upper fixture is composed of the clamping end of the upper fixture and the clamping head of the upper fixture, the lower fixture is composed of the clamping end of the lower fixture and the clamping head of the lower fixture, and the clamping head of the lower fixture is composed of a base, a clip, an upper card , The lower card is composed; the test piece is placed on the lower fixture and fastened during the test, and the load is applied downward from the upper fixture for the test. The advantages of the present invention: 1) The spacing can be adjusted according to the size of the test piece, which is flexible and easy to assemble; 2) The eccentric force of the test piece and the occurrence of instability and overturning can be avoided during the test; 3) The clamping end of the fixture can be made according to the testing machine , is widely applicable.

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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