Research on the Optimization Design of Purlin Column Connection Joints of Crossing Bracket Type Wooden Structure Building in Ba-yu Region

Lili Dong

Abstract


Crossing bracket type framework is widely applied in the wooden structure buildings in Ba-yu region. The purlin is often put in the groove on top of the chapiter. This connection format is not suitable in consideration of satisfying the security of modern architecture. This research focuses on the strengthening and optimization design of purline column connection joints and proposes a steel fastener of purlin column based on existing joint mode of purlin column to prevent the falling of purlin in the loading process. Finite element analysis and simulation software Ansys Workbench to build the model of wooden structure buildings and connection joints. The material properties are defined referring to the data result of wood experiment and the horizontal seismic load is applied along the longitudinal direction of purlin. Calculation analysis is conducted on the purlin column connection joint model after optimization. Through the contrastive analysis before and after the optimization, this steel fastener does not need to open up mortise and tenon joint on the wooden members. The effective bearing capacity of members has certain extent of enhancement while maintaining the integrity of wood, thus contributing to the enhancement of safety factor of the whole structure.


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References


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