1, inlay reinforcement method, for the dry shrinkage cracks of wood columns, when the depth of the cracks does not exceed the column diameter (or the direction of the cross-section size of 1/3), it can be repaired according to the inlay method. When the crack width is not greater than 3mm, can be in the column of the oil finish or break the white process, with putty hook smear tight; when the crack width of 3 ~ 30mm, can be embedded in wooden strips, and stick with water-resistant adhesive; when the crack width is greater than 30mm, in addition to wooden strips with water-resistant adhesive to make up for the sticky outside, but also should be in the column of the cracked section of the addition of iron hoops 2 ~ 3, if the column of the longer section of the crack, then the hoop should not be more than 0.5m, the iron hoop should be embedded in the column, so that its skin and column skin flush. For the beam square dry shrinkage cracks, when the horizontal depth of cracks (when there are opposite cracks, with the sum of the two) is less than the beam width or beam diameter of 1/4, can be used to repair the method of inlay, that is, the first wood and water-resistant adhesive, the gap will be inlaid bonded tight, and then more than 2 iron or fiberglass hoops hoop tight.

2, pier reinforcement method, when the foot of the column is seriously decayed, but from the bottom of the column up to not more than 1/4 of the height of the column, you can use the pier to connect the foot of the method of treatment. Pier, according to the degree of decay, parts and pier materials, can be divided into wood pier, reinforced concrete pier and stone pier three types. Wooden pier joints commonly used mortise and tenon styles such as slap mortise and tenon, coping mortise and tenon, construction, in addition to attention should be paid to make the pier joints mortise and tenon tight to the joints, but also should be added with iron hoops, iron hoops should be embedded in the column; reinforced concrete piers used only for the wall does not show the bright columns, the height should not be more than 1m, the column diameter should be greater than the original diameter of the column of 0.2m, and leave a 0.4m~0.5m long steel plate or angle, with bolts will be the original components clamped, concrete Strength should not be less than C25; stone piers can be used for column foot decay part of the height of less than 0.2m column.

3, chemical reinforcement method, wood interior due to insect infestation or decay to form a hollow, if the column surface layer intact thickness is not less than 50mm, unsaturated polyester resin can be used for filling reinforcement. First of all should be in the column in the stress of small parts of the hole, and then remove rotten wood, debris, and finally filled with resin to full, and each filling amount should not be more than 3kg, each interval should not be less than 30min. literature [4] pointed out that the method used in Xuzhou, one of the ancient architectural group of Xuzhou Jockey Club, Feng Yunge wooden columns reinforced repair, reinforcement, no problems were found, the use of good results.

4, FRP reinforcement method, FRP composite material is formed by the fiber material and matrix material (resin) according to a certain proportion of the mixture of high-performance materials. In the reinforcement project, it is pasted on the surface of the reinforced member through the binder, so as to improve the bearing capacity of the structural member.FRP composite material has the advantages of light weight, good stress performance, easy construction, etc., and it is mainly used in the reinforcement of wood structure and the reinforcement of wooden beams, wooden columns, and mortise and tenon nodes. Literature [5] and literature [6] on carbon fiber cloth reinforcement of wood frame mortise and tenon node research, the results show that the reinforcement of mortise and tenon node strength and stiffness is not a great improvement, but can be restored to the state before the breakage, suitable for the degree of breakage is small mortise and tenon node.