Bidirectional eccentric loading device for bamboo bending members, and installation method

Abstract

The invention relates to a bidirectional eccentric loading device for bamboo bending members, and an installation method. The device comprises two steel cylinder sleeves which are in vertical mirror symmetry, two ball hinged seats, and the bamboo bending members. The steel cylinder sleeves are disposed on the ball hinged seats, and the bamboo bending members are inserted into hollow steel cylinders in the steel cylinder sleeves. The device is advantageous in that 1), the structure is simple and is easy to install, the main body of the loading device only comprises the steel cylinder sleeves and the ball hinged seats, and the installation step is easy; 2), the device is clear in force transmission and is good in integrity, the steel cylinder sleeves can serve as attached corbels fixed at two ends of the member so as to enlarge the force bearing range of an end face, and the ball hinged seats achieve the hinging of the members; 3), the eccentric position is flexible and controllable, ball hinges and the steel cylinder sleeves are connected through holding-on teeth, and the movable ball hinges change the relative position of the steel cylinder sleeves and the ball hinges, thereby achieving the design of different eccentric distances easily; 4), the device is high in popularity, a bamboo member in any rectangular shape can be connected with the device through a steel filling piece and a reserved bolt hole, and the device can be used for carrying out the bidirectional eccentric bearing test of many types of bamboo materials.

Description

technical field [0001] The invention relates to a bidirectional eccentric loading device and an installation method for a bamboo and wood bending member, belonging to the field of bamboo and wood structures. Background technique [0002] As a renewable and degradable natural biomass composite material, bamboo and wood can be used as the preferred building material for green buildings. According to the research report of Tsinghua University and Beijing University of Technology, wood structure buildings can save energy by 5.3% compared with steel structures and 8.1% compared with concrete structures. It has the least impact on the environment and is a true green building. Subsequently, with the promulgation of GB 50005-2003 "Code for Design of Timber Structures", and my country's vigorous introduction of wood structure products and technologies from the United States, Canada and other countries, companies engaged in the production and sales of wood structure buildings and thei...

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Problems solved by technology

[0005] However, the current bidirectional eccentric compression test method for bamboo and wood structures has not been reported

Bamboo and wood materials are also different from steel and aluminum, which can be directly welded and connected, and are also different from concrete, which can be fused and solidified by itself, so it is not easy to connect the additional corbel to the component, and the traditional method of studying unidirectional eccentricity is to apply axial pressure At the same time, a horizontal force is applied as a bending moment in a certain direction. This method is not suitable for two-way eccentricity.

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