Principle Analysis Of Integrated Seismic Reinforcement For Villages And Towns Crossing Timber Structures And Experimental Research On Reinforced Node

Bucket-type wooden structure buildings are connected by tenon-and-mortise joints,which are semi-rigid joints.It is precisely because of this semi-rigid joint that is similar to hinged joints that the system is approximated as a geometrically variable system.Based on the analysis of the overall geometric variability of the traditional bucket-piercing timber frame structure in existing villages and towns and the stiffness of the joints,this paper mainly uses modern structural design theories,and proposes a method of using dampers to strengthen joints,and conducts experiments.The research aims to provide theoretical and practical significance for the reinforcement of wooden buildings in villages and towns.This article mainly completes the following contents:1.Aiming at the demand for improvement of the seismic capacity of wooden buildings in villages and towns and the need for repair and reinforcement,the theoretical methods and existing results of traditional wooden structure research at home and abroad are sorted out.On this basis,the main research content and technical routes of this article are proposed.2.Using modern structural design theory and considering the characteristics of static and dynamic bearing capacity of typical mortise and tenon joints of bucket wooden structures,analyze the necessity of reinforcement of bucket wooden structures and their joints in villages and towns.3.Design and put forward a test verification scheme that uses steel plate rubber dampers to reinforce the wooden structure and its nodes in villages and towns in accordance with the principles of modern structural seismic reinforcement.The physical and mechanical properties of the wood used in the test are obtained through the material property test.4.Design and manufacture two test specimen models of common stepped through tenon and big tenon in bucket wooden structures without seismic reinforcement,and carry out relevant level low-cycle reciprocating load test research,and obtain the corresponding joints under dynamic load.The force-deformation characteristics and the corresponding bending moment-angle bearing capacity relationship.5.Design and manufacture the same two test specimen models of stepped through tenon and big head tenon for the same bucket-piercing wooden structure,and use steel plate rubber dampers to strengthen the joints.The relevant level low-cycle reciprocating load test research is also carried out.After reinforcement,the force and deformation characteristics of the corresponding nodes under dynamic load and the corresponding bending moment-angle bearing capacity relationship are obtained.6.The comparative analysis of the experiment shows the rationality of the proposed reinforcement method.Dampers should be arranged in the plane system of the bucket-piercing timber frame and at the intersection of beams and columns,and make up for the insufficient deformation and energy consumption of the joints.The structural system lacks geometric variability in plane and space.