Reinforcing and repairing structure for purlin and beam node of historic building

Abstract

The invention provides a reinforcing and repairing structure for a purlin and a beam node of a historic building. The two ends of the purlin are erected above a beam head; pillow-shaped timbers are arranged on the left and right sides of the beam head; the pillow-shaped timbers are arranged between the purlin and a purlin frame; the bottom surfaces of the pillow-shaped timbers are ejected above the purlin frame; the heights of the pillow-shaped timbers are greater than the height of the beam head; the widths of the pillow-shaped timbers are greater than the diameter of the purlin; and on the basis of not changing raw materials and a construction process, the purlin and the beam node of the historic building are reinforced.

Description

technical field [0001] The invention relates to the protection and repair of truss purlins and beam joints of ancient buildings, in particular to the reinforcement and repair structure of ancient building truss purlins and beam joints. Background technique [0002] Truss purlins are wooden components along the width direction of the building in the large wooden beam structure of ancient buildings. The Song-style buildings are called "purlins", and the Song-style buildings are called "榑". It is erected on the beams in the hall and the beam heads under the eaves, or between the stigmas. According to the position of the "truss", it can be divided into upper golden trusses, lower golden trusses, and spine trusses. Purlins are members that directly bear the load of the roof and transfer the load to beams and columns. [0003] In the protection and repair project of the large wooden structure of ancient buildings, we found that most of the ancient buildings have the phenomenon o...

AI Technical Summary

Problems solved by technology

Although the horizontal pulling force of this structural node is strong along the width direction, the torsional force along the depth direction, the integrity and seismic performance of the up and down direction are weak, and it is easy to be affected by uneven foundation settlement or accidental load. Cause trusses and purlins to roll and flash, and roof base to slide, which in turn leads to cracking and damage of the gray back layer of the roof, and roof rain leakage

[0005] At present, iron nails are used to repair the overlapping joints between purlins and beam heads in large wooden structures of ancient buildings, and the joints between beam heads and purlins are fixed with iron nails to prevent purlins from rolling and flashing. Although this reinforcement measure has strong rigidity, it has insufficient flexibility and torsion resistance; in case of uneven subsidence of the foundation or ground vibration, it is easy to cause loosening of the connection parts between the iron nails and the beam head and truss purlin, resulting in failure of the reinforcement, thus making the The security of nodes is still at risk

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