A kind of pair of ancient building oblique hand held rafter and purlin node carry out the method for reinforcing repairerment
Technical field
The invention belongs to the Conservation and Renovations of ancient building roofing timber structure layer, particularly relate to a kind of pair of ancient building oblique hand held
Rafter and purlin node carry out the method for reinforcing repairerment.
Background technique
Rafter category large historic building wood member, is between the purlin and roof boarding in roof beam structure, and frame is on upper and lower purlin and purlin, by one
Fixed sequence or positive angle or oblique angle arrangement.Its section has circle and rectangular two kinds.According to its position, " rafter " has different appellations,
Such as: eave-rafter, brain rafter, intermediate rafter.Root it was found that rafter has just been used early in the epoch of " structure wood be nest ", but at that time due to
Roofing be face directly, so, what " rafter " actually play a part of is purlin, and the drop type roof of Han dynasty shows that Han dynasty has multistage
" rafter ";The curved roof of the Northern and Southern Dynasties results in the diversification of " rafter ".In feudal society, the production of " rafter " has sternly
The hierarchy of lattice, such as " national language " are once recorded: the palace " rafter " of emperor will not only polish, and also want textured;On nobility house
" rafter " can only polish;" rafter " on court official house is as long as cut circle.In short, constituting the component of historical timber frame
Other than beam, column, a tree, used in making timber for boats, purlin, there are also the plank bases such as the rafter of roofing, roof boarding and its Accessory Members.The arrangement of ancient building rafter
Form can be divided into: random joining seam and oblique slap two classes;Random joining seam refer to it is parallel between rafter head and rafter head rely on, it is oblique staggeredly.Oblique
The palm refers to ridge step, gold step and each step rafter head such as eaves portion, is sawn into inclined-plane according to raising-and-depression scale, is allowed to be overlapped phase up and down when following closely rafter
It hands over, and is followed closely with rafter and reinforce (as shown in Figure 1).
Ancient building wood roof decking, which refers to, is formed by structure sheaf between the wooden rafter and the wood sheathing held thereon, it is to ancient architecture
The health for building roofing plays very important effect.Since ancient building roof truss is timber structure, if wood roof decking grain is rotten or damaged,
It must lead to roofing ash backing layer cracking, roof roof leaking, cause roof system grain is rotten to rot, and then influence whole building gallows timber
Stress intensity.The roofing of ancient building is complicated structural system, rafter bear by roof boarding transmitting Lai roof load, and by this
For a little load Transmit evenlies to purlin, wherein whether rafter has enough intensity and bearing capacity, and can be effectively by roofing
Load Transmit evenly is an important indicator for investigating ancient building roof-bearing system to purlin purlin.It can be seen that rafter is exactly
Strong " bodyguard " of ancient building roof construction layer.Component one of of the rafter as wood roof decking, directly with the ash in grey backing layer
Mud contact, last a very long time, roof leakage will cause roof boarding and the grain of rafter is rotten;So the reinforcing of rafter is historic building structure
Frequently problem in renovation project.
Currently, China is in the Conservation and Renovation engineering of ancient building wood roof decking, it is rotten for oblique hand held rafter grain to rot
Seriously, when needing replacing new part, the strengthening by reparative method measure taken at rafter head and purlin node is: removing watt part of roofing, shovels
Fall roofing mud backing layer, throw off roof boarding, the rotten rafter of grain of dismantling more renews part.In replacement, first by the rafter head root of new replacement rafter
It is sawn into inclined-plane according to roofing raising-and-depression scale, then the inclined-plane across rafter head above and below roofing is overlapped with inclined-plane and is slapped as oblique, oblique
Hand held rafter head is taken rafter head inclined-plane is overlapped and intersect up and down at purlin node, and with iron nail by rafter head and purlin nail consolidate together, to prevent
Only rafter head is being generated and is being displaced with left and right directions up and down.But this traditional repairerment measure can bring following drawback: firstly, this
Although rigidity is stronger in a short time for kind of the measure for utilizing iron nail fixed, the flexibility, anti-torsion ability at its node are insufficient;Such as
It meets uneven settlement of foundation or earth shock be easy to cause the loosening of connecting portion between iron nail and rafter, purlin, cause to reinforce
Effect failure, so that oblique hand held rafter head and the safety of purlin node be made still to be on the hazard.In addition, iron nail is chronically exposed to air
In, since oxidation generates corrosion, iron nail strength reduction is inevitably resulted in, connection stiffness reduces, so that rafter head be caused to save
Displacement is loosened at point.Secondly, changing the raw material and construction technology of historic building structure, and iron nail when ironware reinforcing joint
It reinforces oblique palm rafter head and purlin node is to achieve the purpose that reinforcing by way of " hammering into ", skill is repaired in this irreversible reinforcing
Art is also unfavorable for the protection of ancient building roofing timber structure base not only bad for the maintenance or replacement of rafter.
Summary of the invention
It is reinforced in order to solve the above technical problems, the present invention provides a kind of pair of ancient building oblique hand held rafter with purlin node
The method of repairerment, on the basis of not changing raw material and construction technology, to oblique hand held wood rafter in ancient building roof construction layer
Son repairs structure with the reinforcing at purlin node.
To realize the above-mentioned technical purpose, used technical solution is: a kind of pair of ancient building oblique hand held rafter and purlin section
Point carries out the method for reinforcing repairerment, comprising the following steps:
Step 1: the rotten rafter of grain of dismantling is replaced, the rafter head of rafter according to roofing raising-and-depression scale and is pressed into purlin node location
Be sawn into inclined-plane, be divided into across rafter and under across rafter, carve to link on the upper rafter head inclined-plane across rafter and take palm tenon, across rafter under
It carves and links on the rafter head inclined-plane of son and take linking of matching of palm tenon and take the palm fourth of the twelve Earthly Branches mouthful;
Step 2: the dovetail fourth of the twelve Earthly Branches mouthful of perforation purlin two ends is carved on the purlin at rafter and purlin node, with hardwood production one
Root it is elongated draw item, draw a lower part be dovetail shaped, the shape for drawing a lower part is identical as the dovetail fourth of the twelve Earthly Branches mouth on purlin, draws top and is
Rectangle;In the dovetail fourth of the twelve Earthly Branches mouthful that lower part insertion purlin will be drawn, makes to draw item and be fixed on purlin;Meanwhile the rafter head under across rafter with
It is carved on the contact surface of purlin and draws the rectangle fourth of the twelve Earthly Branches mouthful that top matches, be connected to across rafter by rectangle fourth of the twelve Earthly Branches mouth by under and draw item
On, it is snapped fit onto instantly across rafter after drawing on item, respectively digs a round tube hole on facade across drawing at left and right sides of rafter in the case where against,
Two round plug tenons to match with round tube hole are made with hardwood again, the length of round plug tenon is longer than round tube hole depth 15-
Round plug tenon is inserted into circular hole hole and is clamped under across rafter by 25mm;
Step 3: carve the rectangle fourth of the twelve Earthly Branches mouthful A on perforation top surface and inclined-plane in upper across rafter rafter head, under across rafter rafter head inclined-plane on across
The rectangle fourth of the twelve Earthly Branches mouthful B is carved at the corresponding position in rafter head inclined-plane, the rectangle fourth of the twelve Earthly Branches mouthful B is identical as the rectangle fourth of the twelve Earthly Branches mouthful size of A, is utilizing hardwood
Production one rectangle plug tenon identical with the rectangle fourth of the twelve Earthly Branches mouthful A and the rectangle fourth of the twelve Earthly Branches mouthful B split shape, across rafter head across rafter head under passes through by
It links to take palm tenon and linking and take the palm fourth of the twelve Earthly Branches mouthful and be fixed together, then across rafter head above and below is plugged and fixed by rectangle plug tenon, completion
Reinforcing repairerment is carried out to ancient building oblique hand held rafter and purlin node.
The rafter of new replacement of the present invention makes of Chinese scholartree wood or elm wood.
The medicine have the advantages that
Firstly, this patent can adhere to taking palm tenon using linking using on original material and the principle basis of construction technology
Measure is repaired in the reinforcing that the fourth of the twelve Earthly Branches connects, dowel plants pin and rectangle tenon grafting three combines, and improves rafter and purlin in wood roof decking
Shearing strength, flexibility and the anti-torsion performance of position of joints, and then the overall structure for improving ancient building wood roof decking is strong
Degree can substantially reduce the damaged probability of roofing, reduce roof maintenance number.
Secondly, this patent use traditional wood materials, by link take the palm mortice and tenon joint, the grafting of rectangle plug tenon, draw a tenon
The structural system of clamping and round tenon grafting combination fixation, efficiently solves oblique hand held rafter and repairs with the reinforcing at purlin node
It copies, practical operation process is also relatively simple, and is good for the environment, and during ancient building roofing Conservation and Renovation, can either pass on
Traditional material way, while again with the invertibity in engineering technology, it only need to be by all Tenon plug-in units more when repairing again
It changes.
Therefore, this patent has huge advantage in terms of ancient building wood roof decking reinforces maintenance engineering, it meets historical relic
Principle is repaired, there is scientific and normalization, and economical and practical, future will have vast potential for future development.
Detailed description of the invention
Fig. 1 is that ancient building unrest oblique hand held rafter and purlin overlap schematic diagram;
Fig. 2 is perspective view of the explosion of the invention;
Fig. 3 is the rafter and purlin node structure schematic diagram after the present invention repairs;
In figure: 1, rafter, 2, purlin, 3, on across rafter, 4, under across rafter, 5, link and take palm tenon, 6, link and take the palm fourth of the twelve Earthly Branches mouthful, 7, swallow
The tail fourth of the twelve Earthly Branches mouthful, 8, draw item, 9, the rectangle fourth of the twelve Earthly Branches mouthful, 10, round tube hole, 11, round plug tenon, 12, the rectangle fourth of the twelve Earthly Branches mouthful A, 13, the rectangle fourth of the twelve Earthly Branches mouthful B, 14,
Rectangle plug tenon, 15, iron nail.
Specific embodiment
A kind of pair of ancient building oblique hand held rafter and purlin node carry out the method for reinforcing repairerment, comprising the following steps:
(a) on the basis of adhering to not changing ancient building raw material and construction technology principle, the damaged range of roofing rafter is determined,
Watt part of roofing is removed, shovel falls the mud backing layer of roofing breakage, throws off roof boarding, the rotten rafter of grain of dismantling, with new part to be replaced.Newly more
The rafter changed makes of Chinese scholartree wood or elm wood, is sawn into tiltedly by the rafter head of rafter according to roofing raising-and-depression scale and by purlin node location
Face, be divided into across rafter and under across rafter, carve to link on the upper rafter head inclined-plane across rafter and take palm tenon, across the rafter of rafter under
It carves and links on head inclined-plane and take linking of matching of palm tenon and take the palm fourth of the twelve Earthly Branches mouthful.
(b) the dovetail fourth of the twelve Earthly Branches mouthful that perforation purlin two ends are carved on the purlin at rafter and purlin node, with hardwood production one
Root it is elongated draw item, draw a lower part be dovetail shaped, the size at dovetail shaped position is identical as the dovetail fourth of the twelve Earthly Branches mouth on purlin, draws top
For rectangle;In the dovetail fourth of the twelve Earthly Branches mouthful that lower part insertion purlin will be drawn, makes to draw item and be fixed on purlin;Meanwhile the rafter head under across rafter with
The rectangle fourth of the twelve Earthly Branches mouthful that size identical as top is drawn is carved on the contact surface of purlin is connected to by rectangle fourth of the twelve Earthly Branches mouth across rafter by under and draws item
On, to be fixed together under making across rafter and purlin.Instantly it is snapped fit onto across rafter after drawing on item, in the case where against across rafter or so two
Drawing for side respectively digs a round tube hole on facade, i.e., the equivalent width of the distance between inward flange of two round tube holes and rafter,
Two round plug tenons to match with round tube hole are made with hardwood again, and circle plug tenon length exceeds hole depth about 15-25mm,
Round plug tenon is inserted into circular hole hole and is clamped under across rafter;By it is this draw item clamping and round tenon grafting can prevent rafter
Son generates displacement in front and rear, left and right direction, strengthens the flexibility and anti-torsion performance at node.
(c) the rectangle fourth of the twelve Earthly Branches mouthful A that perforation top surface and inclined-plane are carved in upper across rafter rafter head, under across rafter rafter head inclined-plane on across
The rectangle fourth of the twelve Earthly Branches mouthful B is carved at the corresponding position in rafter head inclined-plane, the rectangle fourth of the twelve Earthly Branches mouthful B is identical as the rectangle fourth of the twelve Earthly Branches mouthful size of A, is utilizing hardwood
A rectangle plug tenon identical with rectangle fourth of the twelve Earthly Branches mouth-shaped size is made, across rafter head up and down is plugged and fixed (such as by rectangle plug tenon
Shown in Fig. 2).
(d) firstly, at rafter head with purlin node by across rafter head and under across rafter head inclined-plane take palm mortice and tenon joint and make using linking
Two rafter heads overlap intersection up and down, link and take palm tenon perforation rafter head inclined-plane up and down, are tightly secured together two rafter heads, both met
The requirement of node overall stiffness, and the shear behavior of up and down direction at node is improved, while can also effectively prevent up and down
Across rafter head generates relative displacement in left and right and up and down direction.
Then, across rafter head is connected together by the rectangle fourth of the twelve Earthly Branches mouthful with the item that draws on purlin then by under, this to draw a clamping structure
Across rafter head is fixed with purlin by under, meanwhile, rafter both sides of head is using round plug tenon and draws a grafting;Across rafter head can be effectively prevented down
Displacement is generated in left and right and up and down direction with purlin, and the flexibility at node and anti-torsion performance can be reinforced.
Finally, can be prevented upper and lower in the upper top surface of across rafter rafter head above and below using rectangle plug tenon by upper and lower rafter head grafting
Across rafter rafter head generates displacement in front-rear direction, further enhances the overall stability of structure at rafter and purlin node.
In conclusion this link takes palm mortice and tenon joint, the grafting of rectangle tenon and draws item clamping and round tenon grafting combines
Repairerment measure is reinforced, the shear behavior of rafter Yu purlin position of joints can be reinforced in above-below direction, meanwhile, and can be in left and right with before
Rear direction avoids rafter head and purlin from generating displacement at node, and improves the overall flexibility and anti-torsion of structure at node
Energy;Such as earthquake or vibration bursts, the mutual extrusion and friction energy earthquake energy of tenon and the fourth of the twelve Earthly Branches mouthful reduce to roofing wood base
The destruction of layer structure entirety.
Embodiment 1
Ancient building roofing is due to last a very long time, the factors such as wind and weather, easily generation watt part breakage, displacement and grey backing layer cracking,
So as to cause there is roof draining rain, wood sheathing rots, the rotten phenomenon of rafter grain.If rafter grain is rotten serious, it is not able to satisfy it and holds
The case where carrying force request, it is necessary to more renew part, this can be used for the reinforcing repairerment of all oblique hand held rafters and purlin node
Patented technology.
(a) at the node of all oblique hand held rafters and purlin, such as: upper principal purlin, middle golden purlin, lower golden purlin and rafter overlap
Place first determines the rotten rotten range of grain, the roofing tile part within the scope of this is taken off if rafter grain is rotten when seriously needing to change new part
It goes, shovel falls corresponding roofing ash back, opens wood sheathing herein, the rotten rafter of grain of dismantling, with new part to be replaced.The rafter newly replaced
With Chinese scholartree wood or the production of elm wood, the rafter head of rafter is sawn into inclined-plane according to roofing raising-and-depression scale, after square under across under rafter
Surface will carve to link and take palm tenon, the rafter head under across rafter is oblique just right above purlin on the upper rafter head inclined-plane across rafter
Linking for identical size is carved on face takes the palm fourth of the twelve Earthly Branches mouthful.
(b) the dovetail fourth of the twelve Earthly Branches mouthful is carved on the purlin at rafter and purlin node, with hardwood make one it is elongated draw item, draw item
Lower part is dovetail shaped, and size is identical as the dovetail fourth of the twelve Earthly Branches mouth on purlin, and drawing top is rectangle;A lower part insertion purlin dovetail fourth of the twelve Earthly Branches will be drawn
In mouthful, makes to draw item and be fixed on purlin;Meanwhile the rectangle fourth of the twelve Earthly Branches of identical size is carved on the contact surface of the rafter head and purlin under across rafter
Mouthful, it is connected to and is drawn on item by rectangle fourth of the twelve Earthly Branches mouth across rafter by under, to be fixed together under making across rafter and purlin.Instantly across rafter
Snap fit onto after drawing on item, drawing at left and right sides of rafter respectively dug on facade a diameter be 20mm round tube hole, then with firmly it is miscellaneous
The round plug tenon that wood two diameters of production are 20mm, circle plug tenon is inserted into hole, and circle plug tenon length exceeds hole depth about
20mm;By it is this draw item clamping and round tenon grafting can prevent rafter front and rear, left and right direction generate displacement, strengthen node
The flexibility and anti-torsion performance at place.
(c) the rectangle fourth of the twelve Earthly Branches mouthful A is carved in the top surface of upper across rafter rafter head, across rafter rafter head inclined-plane across the rafter head fourth of the twelve Earthly Branches mouthful phase under
Also the identical rectangle fourth of the twelve Earthly Branches mouthful B of size is carved at corresponding position, is making one and the rectangle fourth of the twelve Earthly Branches mouthful A and the rectangle fourth of the twelve Earthly Branches mouthful using hardwood
Across rafter head up and down is plugged and fixed by rectangle plug tenon for the identical rectangle plug tenon of geomery after B split.
(d) rafter head inclined-plane is taken palm mortice and tenon joint and overlaps two rafter heads or more to intersect using linking at purlin node in rafter head,
Link and take palm tenon and penetrate through rafter head inclined-plane up and down, be tightly secured together two rafter heads, will under across rafter head by the rectangle fourth of the twelve Earthly Branches mouthful with
The item that draws on purlin is connected together, and a this clamping structure across the rafter head by under that draws is fixed with purlin, in the upper upper top surface across rafter head
Using rectangle plug tenon by upper and lower rafter head grafting, complete to carry out reinforcing repairerment to ancient building oblique hand held rafter and purlin node.