Study On Mechanical Properties Of Mortise Joints Under The State Of Pull Tenon

Ancient timber structure is connected by mortise and tenon joint,stability and safe-tyof tenon and mortise connection in plays an importantrole betweenstability and safe-tyof ancient timber structure. The existing ancient timber buildings mostly have certaindamage, and the damage state pull tenon is the most commonof ancient wood structure,In order to accurately grasp pull tenon impact on the overallstabilityof timber structure,this paper probes into the test and finite element analysis.This paper adopted the ancient timber structure as the most common form whichtook tenon connection as the research object. In order to rule out other damage on woodmortise and tenon joint node connection, the experiment adopted new mongolica timber.Test specimen making, is in according with the clear pattern to create the cases of largetype building size, building scale ratio of1:2four tenon pull quantities respectively were0mm,15mm,25mm,35mm of one common architecture model; Pillars use one-timeapplying20kN concentrated load; Frame vertical load is one third of the frontal fang,and use step by step loading until the structure was damaged. Through the vertical loadclassification test, it can get node P–△in the main failure forms, across the delta curveand displacement Angle curve. According to test data, the damage point of mortise wastenon joint connection of the frame, the destruction form was composite damage ofbending shearing, tenon can reduce the mortise and tenon joint connected structure’sbearing capacity and deformation capacity. Finally,using finite element software adinaanalyzed. verifies the correctness of the test results. The size of the modelwas establishedin accordance with the test specimen model size, the number of the model four.The setmode was the3-d Solid model, and using20time step took step loading. The resultsshowed that the result of using scaled finite element simulation analysis of adina.and theresults with the test result are consistent, which means that the result of the test wasbelievable.Based on different tenon of pull through tenon mortise and tenon joint node conne-ction performance test and scaled finite element simulation analysis compared withdifferent adina.Didderent structure have different effect on performance, and it get thechange rule. Then provide reference for the ancient wood repair and reinforcement, andcan also provide reference for the new archaize timberwork building design.