CN103993749A - Reinforcing and repairing method for Dougong of historic building - Google Patents

Abstract

Provided is a reinforcing and repairing method for a Dougong of a historic building. If the tenon of the Dougong is cracked, twisted or rotten, the cracked, twisted or rotten portion of the tenon can be removed firstly, then, a piece of dry hardwood is used for manufacturing the removed part according to the type and the size of the original tenon, the length of a newly-manufactured part should be larger than that of the original tenon by once to twice, dovetail joints are formed in the two ends of the hardwood so that the head of the Dougong can be connected with the hardwood through the dovetail joints, a groove is formed in the vertical face where the head of the Dougong is combined with the hardwood so that a silver ingot tenon can be embedded in the groove, the outer surface of the silver ingot tenon is made to be flush with the surface of the Dougong, the hardwood can be fixed to the head of the Dougong through the silver ingot tenon, and the bending resistance and the twisting resistance of the Dougong body can be improved. The joint of the Dougong body is made to be flat through caulking of putty, and then the surface of the Dougong is painted with wood oil.

Description

The reinforcing restorative procedure of ancient building bucket arch

Technical field

The present invention relates to the Conservation and Renovation of ancient building beam frame structure, specifically be not change on the basis of raw material and construction technology, to the reinforcing repair process of arch in ancient building bucket arch deck.

Background technology

The number of packages of ancient building bucket arch member is maximum, and is primary structural component, and complex structure, is full of variety, and each member overlaps mutually, the saw mortise (-ice) fourth of the twelve Earthly Branches, and general remaining useful cross section is all very little.The whole bucket arch of collecting together is due to External Force Acting, and if eaves purlin is to outer rolling, pillar sinks, and the crooked grade of roof beam structure can cause that each member of bucket arch is subjected to displacement because of unbalance stress, therefore turns round sudden strains of a muscle, is out of shape, and usually follows and occurs the phenomenons such as fourth of the twelve Earthly Branches mouth squeeze crack, tenon fracture.

In China's existing ancient building bucket arch deck for arch reinforcing repair technology mostly in the following way process:

(1) the employing cementation of fissures that arch splitting is not broken cements

(2) left and right distortion is no more than the continuation use of 0.3cm, exceedes changing of 0.3cm

(3) dovetail break is without can the cementing by the cementation of fissures of the rotten phenomenon of grain, rotten serious the changing of grain

These are reinforced repairerment measure and have technically some problems, as the cementation of fissures cements, can not fundamentally solve the stress of arch, and the impaired situation of arch can not get effective containment.In addition, the principles and requirements that the original member of a large amount of replacings is repaired against landmark, must keep original material and construction technology.Meanwhile, also there is larger impact for construction, because arch is all made by hand, though former design has certain standard, in the time making, cut, cut the operations such as cutter, the mortise fourth of the twelve Earthly Branches with an adze through setting-out, saw, inevitably produce some slight errors, what member was large is difficult for discovering, little just obvious of member.

Summary of the invention

The present invention, for solving the problems of the technologies described above the reinforcing repair structure that a kind of ancient building bucket arch is provided, is not changing on the basis of raw material and construction technology, and small-sized bucket arch is repaired, and promotes resistance and the anti-torsion performance of repairing back bucket arch.

The technical scheme adopting for the deficiency solving the problems of the technologies described above is: the reinforcing restorative procedure of ancient building bucket arch, step 1, the dovetail break of bucket arch to be repaired, distortion or poor rotten part are cleared up, fracture, distortion or the rotten position of grain are amputated, leave old arch head part;

Step 2, the part of falling according to original arch head saw with dry hardwood, make by style and size former state, and length should exceed old length 1-2 doubly, and dovetail is opened at the two ends of hardwood, makes hardwood and repair part, for subsequent use;

Step 3, repair at old arch head part and hardwood on the facade of part junction and open draw-in groove, in old arch head part, offer the draw-in groove matching with dovetail;

Step 4, make according to the shape of the draw-in groove of junction in step 3 the double dovetail key matching with it, for subsequent use;

Step 5, by each draw-in groove and each tenon, make the external surface of double dovetail key concordant with arch surface,

Step 6, arch body seam crossing polish with putty filleting, then bucket arch surface are covered or decorate with paint.

Beneficial effect of the present invention is:

First, this patent can adhere to adopting on the principle basis of original member and construction technology, amputate arch member Fracture, distortion or the rotten part of grain, adopt dry hardwood two ends to open dovetail and arch head joggle, can strengthen the left and right draw knot force of arch head and hardwood, improve the globality of Tenon and arch head; On the facade of arch and hardwood junction, fluting embeds double dovetail key, can improve anti-torsion, the anti-bending strength of arch, fundamentally improves the stress performance of arch, and the impaired of arch that make to struggle against obtains comprehensively and effectively containment.

Secondly, the practical operation operation that this patent adopts is also simpler, has both saved raw material, is conducive to environmental protection, greatly reduces again the labour intensity of maintenance construction, improves bucket arch deck Conservation and Renovation construction speed; Meanwhile, this Embedded repairing can good hidden repairing vestige, has both met the traditional aesthetic standards of China, has emphasized again the Echtheit of member.

Again, the art of this patent, in ancient building bucket arch deck Conservation and Renovation process, can either pass on traditional material way, can avoid again tearing open greatly; If torn open greatly, breakage will be heavier, just must change in a large number virgin material.

Therefore, this patent has huge advantage aspect landmark bucket arch deck reinforcing maintenance works, and it meets historical relic and repairs principle, has science and normalization, and economical and practical, and will have vast potential for future development future.

Brief description of the drawings

Fig. 1 is explosion type structural representation of the present invention;

Fig. 2 is integrated structure schematic diagram of the present invention;

In figure: 1, former arch head part, 2, hardwood repairs part, 3, dovetail, 4, draw-in groove, 5, double dovetail key.

Detailed description of the invention

As shown in the figure, structure accompanying drawing is described this patent.

Embodiment 1

The outer peripheral column head bucket arch deck of ancient building is reinforced and is repaired: in outer eaves bucket arch deck due to long-term exposing to the weather, the dovetail break of arch, poor rotten phenomenon is comparatively general, can adopt the art of this patent to this, fracture or the rotten position of grain are clipped, then make according to original tenon style size of dry hardwood, length should exceed old length 1-2 doubly, the two ends of hardwood are opened dovetail and are connected with arch head joggle, and at the facade joggle place of arch recessing embedding double dovetail key, hardwood and arch head are fixed up, the dovetail at hardwood two ends can strengthen the draw knot force of itself and arch head, the double dovetail key embedding can improve anti-torsion and the anti-bending strength of arch, thereby improve the stress of arch, improve the overall performance of arch.

Embodiment 2

Ancient building angular capital bucket arch deck is reinforced and is repaired: in corner bucket arch deck, in damaged many reflections of arch, torsional deflection is more serious, can adopt the art of this patent to this, the position of torsional deflection is amputated, make according to original tenon style size of dry hardwood, length should exceed old length 1-2 doubly, the two ends of hardwood are opened dovetail and are connected with arch head joggle, and at the facade joggle place of arch recessing embedding double dovetail key, hardwood and arch head are fixed up, fundamentally improve the stress of arch, improve the anti-torsion performance of arch.

Embodiment 3

Eaves bucket arch deck is reinforced and is repaired in ancient building: interior eaves bucket arch deck is owing to rolling to dodge and cause the Tenon of arch to rupture more in eaves purlin, can adopt the art of this patent to reinforce reparation, first fracture location is clipped, then make according to original tenon style size of dry hardwood, length should exceed old length 1-2 doubly, the two ends of hardwood are opened dovetail and are connected with arch head joggle, and at the facade recessing embedding double dovetail key of arch head and hardwood junction, hardwood and arch head are fixed up, the dovetail at hardwood two ends can strengthen the draw knot force of itself and arch head, the double dovetail key embedding can improve anti-torsion and the anti-bending strength of arch.

Claims (1)

1. the reinforcing restorative procedure of ancient building bucket arch, is characterized in that:

Step 1, the dovetail break of bucket arch to be repaired, distortion or poor rotten part are cleared up, fracture, distortion or the rotten position of grain are amputated, leave old arch head part;

Step 2, the part of falling according to original arch head saw with dry hardwood, make by style and size former state, and length should exceed old length 1-2 doubly, and dovetail is opened at the two ends of hardwood, makes hardwood and repair part, for subsequent use;

Step 3, repair at old arch head part and hardwood on the facade of part junction and open draw-in groove, in old arch head part, offer the draw-in groove matching with dovetail;

Step 4, make according to the shape of the draw-in groove of junction in step 3 the double dovetail key matching with it, for subsequent use;

Step 5, by each draw-in groove and each tenon, make the external surface of double dovetail key concordant with arch surface,

Step 6, arch body seam crossing polish with putty filleting, then bucket arch surface are covered or decorate with paint.