CN112780077A - Rectangular structure column lattice combined type reinforcing structure and method thereof - Google Patents
Rectangular structure column lattice combined type reinforcing structure and method thereof Download PDFInfo
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- CN112780077A CN112780077A CN202110101305.1A CN202110101305A CN112780077A CN 112780077 A CN112780077 A CN 112780077A CN 202110101305 A CN202110101305 A CN 202110101305A CN 112780077 A CN112780077 A CN 112780077A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
Abstract
The invention discloses a rectangular structure column lattice combined type reinforcing structure and a method thereof, wherein the reinforcing structure comprises a structure column and a section steel lattice; the section steel lattice comprises angle steel and batten plates; the angle steels are arranged at four angular points of the structural column and are arranged in a pull-through manner along the height direction of the structural column between the floor slabs; batten plates are arranged between adjacent angle steels and are arranged along the annular direction of the angle steels and are distributed at intervals along the height direction of the structural column; the batten plate is provided with an anchor bolt which passes through a preformed hole on the batten plate and is in anchoring connection with the structural column; the gap between the batten plates is provided with a trapezoidal groove and a U-shaped groove in the transverse direction of the structural column, and the trapezoidal groove and the U-shaped groove are connected with the newly-increased micro-expansion grouting material in a sawtooth occlusion manner. The invention obviously improves the bearing capacity of the reinforced structural column, effectively reduces the influence of the increase of the section of the structural column on the use space of the building, has convenient construction and economic and reasonable structure, effectively shortens the period of reinforcing and reforming the structural column, improves the construction efficiency and saves the labor cost.
Description
Technical Field
The invention belongs to the technical field of building structure reinforcement and transformation, and particularly relates to a rectangular structure column lattice combined reinforcement structure and a method thereof.
Background
The structural columns of the building are often reinforced due to insufficient bearing capacity of the structure caused by initial defects of the structure, structural deterioration in the using process, changes of using categories (such as earthquake fortification grade changes), load increase caused by using function changes and the like.
Among the existing structure post reinforcement technique, generally adopt reinforcing measures such as outsourcing shaped steel reinforcement, increase cross-section reinforcement and reinforcement of outer parcel carbon cloth, include:
1. reinforcing the externally-coated steel: the angle steel is arranged at the corner of a rectangular column and is tightly adhered, then a connecting steel batten plate is welded with the angle steel, the angle steel is bonded with a structural column by pouring an adhesive behind the angle steel to form a whole, high-strength cement mortar (with a steel wire mesh for cracking prevention) with the thickness not less than 25mm is smeared on the surface of the section steel to serve as a protective layer, and other decorative materials with anti-corrosion and waterproof properties can be adopted for protection. The reinforcing method has the defects of non-compact pouring of colloid, aging of colloid, poor fireproof and heat-resistant performances, high construction cost and the like.
2. And (3) increasing the section and reinforcing: the method is a reinforcing method for increasing the stressed cross-sectional area of the structural column by roughening the surface of the structural column, planting bars and then pouring concrete into a vertical mold. However, the reinforcing method has the defects of roughening of the structural column, large amount of embedded steel bars, complex process, large damage to the existing structural column, large increase of the structural section, compression of the use space of the building, influence on the use function of the building, long construction period and the like.
3. Reinforcing by wrapping carbon fiber cloth: the reinforcing method comprises the steps of firstly coating an adhesive on the outer surface of the structural column, winding carbon fiber cloth on the outer surface of the structural column in the circumferential direction, and finally coating a layer of adhesive on the surface of the carbon fiber cloth. The reinforcing method has an unobvious effect on improving the bearing capacity of the structural column, and also has the defects of easy aging of colloid, poor fireproof and heat-resistant performances, high construction cost and the like.
In summary, when the externally wrapped carbon fiber cloth is used for reinforcement and the externally wrapped steel is used for reinforcement, the bearing capacity of the structural column is improved in a limited mode, when the bearing capacity of the structural column needs to be improved greatly, the two methods are obviously unsuitable, the method for increasing the section is mostly adopted for reinforcement of the structural column, but the section of the structural column is increased one by one, the using space of a building is extruded, the using function is influenced, and the structure is not attractive. Therefore, a reinforcing method and a reinforcing structure which have the advantages of good bearing capacity improving effect, small increase of the section size of the structural column and convenience in construction are urgently needed to be found, so that the defects and shortcomings of the existing rectangular structural column reinforcing technology are overcome.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned shortcomings in the prior art, and providing a rectangular-structure column-lattice combined reinforcement structure and a method thereof, so as to solve or improve the above-mentioned problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
a rectangular structure column lattice combined type reinforcing structure and a method thereof comprise a structure column and a section steel lattice wrapped on the peripheral surface of the structure column; the section steel lattice comprises angle steel and batten plates; the angle steels are arranged at four angular points of the structural column and are arranged in a pull-through manner along the height direction of the structural column between the floor slabs; batten plates are arranged between adjacent angle steels and are connected with the angle steels in a welding mode, and the batten plates are arranged along the annular direction of the angle steels and are distributed at intervals along the height direction of the structural column; the batten plate is provided with an anchor bolt which passes through a preformed hole on the batten plate and is in anchoring connection with the structural column; the gap between the batten plates is provided with a trapezoidal groove and a U-shaped groove in the transverse direction of the structural column, and the trapezoidal groove and the U-shaped groove are connected with the newly-increased micro-expansion grouting material in a sawtooth occlusion manner.
Preferably, the gusset plates within the top thickened region H3 and the bottom thickened region H1 of the structural column are pre-provided with a plurality of anchor holes distributed at equal intervals.
Preferably, the top and bottom most gusset plates of the structural column are widened and more than two rows of gusset plate anchor holes and anchors are provided.
Preferably, the joints of the structural columns, the longitudinal beams and the cross beams are made of steel bars of equal generation, penetrate through the longitudinal beams and the cross beams and are connected with the angle steels in a welding mode.
Preferably, the four corners of the structural column are rounded, a gap t1 is formed between the angle steel and the concrete, a plurality of layers of annular connecting batten plates are arranged in the height direction of the angle steel, the number of the batten plates of each ring is four, and the four batten plates are welded with the corresponding angle steel respectively to form a closed ring.
Preferably, the cushion block is stuffed between the batten plate and the structure column, the batten plate is provided with an anchor bolt hole, an anchor bolt is arranged in the anchor bolt hole in a penetrating mode and is in anchoring connection with the structure column, the length of the anchor bolt extending out of the batten plate is t3, and the length t3 is smaller than the increasing thickness of the structure column.
Preferably, the surface of the periphery of the structural column is provided with a trapezoidal groove and a U-shaped groove in a digging manner, the width of the notch of the trapezoidal groove and the notch of the U-shaped groove is 3 cm-6 cm, and the depth of the notch of the trapezoidal groove and the notch of the U-shaped groove is t 1; the length of trapezoidal groove notch and U-shaped groove notch is opened to the angle steel edge, and the trapezoidal notch and the U-shaped groove notch staggered arrangement of two adjacent faces of structure post, and nonadjacent trapezoidal notch and U-shaped groove notch are arranged with high on the structure post.
Preferably, the section of the structural column is increased in thickness to be B1 and B2 respectively, and grouting materials are poured in a vertical mode through pressure on the outer sides of the angle iron and the batten plate.
A method of rectangular structural column lattice modular reinforcement construction comprising:
s1, according to the stress requirement for improving the bearing capacity of the structural column to be reinforced, selecting the structural sizes of angle steel and batten plates in the section steel lattice and the structural thickness of the outer side of the section steel lattice which needs to be increased;
s2, unloading the structural column;
s3, removing the decorative layer of the structural column, transversely and peripherally slitting the structural column, wherein the notch 40(40a) is trapezoidal or U-shaped, the section size and density of the notch are determined according to the structural size of the reinforced structural column and the reinforced force transmission, the notch is not pulled through in the circumferential direction, the notch is only required to be cut to the edge of the angle steel of the column corner, and the notches on the four sides of the structural column are arranged in a staggered mode;
s4, rounding the reinforced structural column, and wrapping steel lattices around the structural column, wherein angle steels are arranged at four column corners, batten plates are arranged among the angle steels, and the batten plates and the angle steels are welded; a gap t1 is reserved between the outer-wrapped steel lattice and the reinforced structure, and the inner side of the angle steel is tightly filled with the structural column by adopting a cushion block;
s5, adopting anchor bolts to penetrate through the reserved holes on the batten plates and be in anchoring connection with the reinforced structural columns;
s6, erecting a template outside the section steel lattice;
s7, sequentially pouring micro-expansion grouting materials from the column foot to the top of the structural column according to a preset pouring sequence;
and S8, after the grouting material reaches the design strength, removing the template to complete the structural column lattice type combined reinforcement construction.
Preferably, in S3, a plurality of anchor holes are previously provided in the gusset plates located at the top and bottom of the structural pillar, and when the height of the structural pillar exceeds a preset value, a plurality of anchor holes are reserved in a selected partial number of the gusset plates in the middle of the structural pillar.
The invention provides a rectangular structure column lattice combined type reinforcing structure and a method thereof, which have the following beneficial effects:
the invention adopts the combined structure reinforcing method of externally-coated steel lattice and increasing the section of the structural column, and adopts the anchor bolt (anchor bar) and the arranged interface sawtooth notch, thereby realizing the common stress of the newly-added structure and the reinforced structural column, and effectively reducing the influence of the section increase of the structural column on the use space of the building while obviously improving the bearing capacity of the reinforced structural column.
Meanwhile, compared with a common method for reinforcing the added cross section and a method for reinforcing the externally-coated section steel, the method provided by the invention does not need to drill holes and plant ribs on a reinforced structural column in a large area, and glue is not needed to be injected between the externally-coated section steel and the reinforced structural column, and meanwhile, an unstressed protective layer is not arranged on the outer side of the externally-coated section steel, and the section steel is well protected while the micro-expansion grouting material on the outer side of the section steel participates in stress.
Moreover, the invention has convenient construction and economic and reasonable structure, effectively shortens the period of reinforcing and reforming the structural column, improves the construction efficiency and saves the labor cost.
Drawings
Fig. 1 is a vertical cross-sectional view of a rectangular-structure column lattice combined reinforcement structure and a method thereof.
Fig. 2 is a cross-sectional view of reinforcing sections of column top and column bottom reinforced areas of a rectangular-structure column lattice combined reinforcing structure and a method thereof.
Fig. 3 is a general reinforcement cross-sectional view of a rectangular-structure column lattice combined reinforcement structure and a method thereof.
Fig. 4 is a cross-sectional view of beam-column reinforcement of the rectangular-structure column lattice combined reinforcement structure and the method thereof.
Wherein, 10, structural columns; 11. a stringer; 12. a cross beam; 13. a floor slab; 21. angle steel; 22. a batten plate; 22a, a gusset plate; 23. an anchor bolt hole; 24. cushion blocks; 31. anchor bolts or anchor bars; 32. steel bars are substituted for others; 40. a trapezoidal groove; 40a, a U-shaped groove 40; 50. micro-expansion grouting material; h1, the height of the column bottom encryption area; h2, structural column mid-height; h3, column top encryption zone height; b1, longitudinally reinforcing the total thickness of the structural column; b2, transversely reinforcing the total thickness by the structural columns; t1, arrangement distance between the angle steel and the structural column; t2, dovetail or U-groove depth; t3, the distance the anchor bolt extends out of the gusset plate.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
According to an embodiment of the present application, referring to fig. 1, the rectangular structural column lattice combined type reinforcing structure of the present solution includes a structural column 10 and a section steel lattice wrapped around the structural column 10, wherein the section steel lattice can improve the bearing capacity of the reinforced structural column 10.
The main principle of the invention is to reinforce the reinforced structural column 10 by improving the bearing capacity by a method of properly increasing the section combination of the structural column 10 on the basis of adopting the unbonded outer-wrapping steel lattice structure for reinforcement.
The construction of the present invention will be described in detail below:
arranging a section steel lattice around the structural column 10, wherein the section steel lattice comprises angle steel 21 and batten plates 22, the angle steel 21 is arranged at four corner points of the structural column 10, and the angle steel 21 is arranged between the floor slabs 13 in the height direction of the structural column 10 in a pull-through manner; set up the batten plate 22 between the adjacent angle steel 21, the connection batten plate 22 between the angle steel 21 is arranged according to certain interval along the direction of height of structural column 10, connects batten plate 22 and angle steel 21 welded link to each other to arrange along angle steel 21 hoop, the whole structure that forms.
The left and right sides of the angle steel 21 are provided with a plurality of layers of annular connecting batten plates 22 in the height direction of the angle steel 21, and the number of the batten plates 22 in one ring is four, and the four batten plates are respectively welded with the corresponding angle steel 21 to form a closed ring.
The batten plates in the range of the column top encryption region H3 and the column base encryption region H1 are provided with a certain number of anchor bolt holes 23 in advance, the anchor bolt holes are arranged at equal intervals, and the batten plates in the range of the height H2 in the middle of the structural column can be provided with no anchor bolt holes 23.
The batten plates 22a at the topmost and bottommost layers of the reinforced structural column 10 can be provided with two or more rows of anchor bolt holes 23 and anchor bolts (anchor bars) 31 to be in anchoring connection with the anchored structural column 10; when the reinforced structural column 10 exceeds a certain height, the gusset plate 22 in the middle H2 of the structural column 10 may be provided with an anchoring hole 23 and an anchor bolt (reinforcing bar) 31 for reinforcing connection with the reinforced structural column 10.
When the height of the structural column 10 is larger than 6m, the lacing plate anchor bolt holes 23 are locally arranged according to the stress condition, a certain number of cushion blocks 24 are arranged between the lacing plate 22 and the reinforced structural column, and the integral steel lattice is anchored on the reinforced structural column 10 through anchor bolts (anchor bars) 31 arranged in the holes of the lacing plate 22.
When the batten plate 22 cannot be arranged at the joint of the structural column 10 and the longitudinal beam 11 and the transverse beam 12, the equivalent steel bar 32 or the bolt penetrates through the longitudinal beam 11 and the transverse beam 12 and then is welded with the angle steel 21.
At the gap between the batten plates 22, trapezoidal grooves 40 or U-shaped grooves 40a are locally formed around the structural columns 10, so that the micro-expansion grouting material 50 poured outside the section steel lattice is enabled to be meshed with sawteeth between the reinforced structural columns 10 and bear force together.
The notch widths of the trapezoid-shaped groove 40 and the U-shaped groove 40a are 3 cm-6 cm, the notch depth is t1, the notch depth t1 can be 2 cm-5 cm, and the notch depth can be determined according to the size of the structural column and the total reinforcing thicknesses B1 and B2. The length of the notches of the trapezoidal groove 40 and the U-shaped groove 40a is only required to be opened to the edge of the angle steel, the notches of two adjacent surfaces of the structural column 10 are arranged in a staggered mode, the notches 40(40a) of the structural column 10 which are not adjacent can be arranged at the same height, and the weakening of the section of the structural column 10 is avoided to be too large.
Referring to fig. 2, the structural column 10 is a rectangular solid structural column, and four corners of the rectangular structural column 10 are rounded with a radius of 2cm to 5 cm. The angle steel 21 is arranged at four corner points of the structural column 10, the angle steel 21 is welded with the angle steel by the batten plates 22 all around, gaps t1 are formed between the angle steel 21 and concrete, cushion blocks 24 are filled between the batten plates 22 and the structural column 10, anchor bolt holes 23 are formed in the batten plates 22, anchor bolts (anchor bars) 31 are penetrated in the holes and anchored firmly by the reinforced structural column, certain length t3 of the batten plates 22 extends out, the length t3 is smaller than the thickness increasing (B1 and B2) of the structural column 10, and a certain protective layer thickness is reserved.
The thickness of the cross section of the structural column 10 is increased to be B1 and B2 respectively, the grouting material 50 is poured by the pressure of the vertical mold outside the angle steel 21 and the batten plate 22, and the grouting material 50 has certain micro-expansibility and is tightly poured.
Referring to fig. 3, in comparison with fig. 2, the prepared hole 23 of the exterior-coated steel lattice gusset plate 22 and the gusset plate anchor bolt (anchor bar) 31 are eliminated, and the rest is identical to the related configuration of fig. 2.
Referring to fig. 4, when the gusset plates 22 cannot be provided between the angle steels 21 outside the structural column 10 for connection, instead of the steel bars (bolts) 32 such as the column tops are provided by making holes at the corresponding positions of the longitudinal beams 11 and 12 to be welded with the angle steels, thereby ensuring that the connection between the external reinforcing steel bars 21 and the reinforced structural column 10, the longitudinal beams 11 and the cross beams 12 is firm.
According to the newly added section steel lattice column, the newly added structure is reliably connected with the reinforced structure column 10 in a manner of meshing and combining the anchor bolts (anchor bars) additionally arranged on the batten plates, the trapezoidal (u-shaped) notches arranged on the structure column 10 and the saw teeth between the newly added micro-expansion grouting material 50 structures, so that the common stress of the newly added structure and the reinforced structure column 10 is realized, the bearing capacity of the structure column is greatly improved, the section size of the newly added structure is reduced, and the influence of the reinforced structure column 10 on the use space of a building can be effectively reduced.
According to one embodiment of the present application, a method of rectangular structural column lattice unitized reinforcement construction includes:
s1, according to the stress requirement of bearing capacity improvement of the reinforced structural column 10, selecting the structural sizes of angle steel 21 and batten plate 22 in the externally-wrapped steel and the structural thicknesses B1 and B2 which need to be increased on the outer side of the steel;
s2, unloading the reinforced structural column 10 to reduce the load transferred by the floor and the beam body to the reinforced structural column, wherein the step can be omitted when the reinforced structural column cannot be unloaded;
and S3, removing the decorative layer of the reinforced structural column 10, and performing undercutting treatment on the transverse periphery of the reinforced structural column 10. The notches are trapezoidal or U-shaped, the section size and the density of the notches are comprehensively determined according to the structural size of the reinforced structural column 10 and the force transmission requirement of reinforcement, the notches are not pulled through in the annular direction, the notches are only required to be drawn to the edge of an angle steel 21 at the corner of the structural column 10, and the notches on the four sides of the structural column 10 are arranged in a staggered mode in order to avoid that the section of the existing structural column 10 is weakened too much;
s4, rounding the reinforced structural column 10, controlling the radius to be about 2cm, and externally wrapping section steel around the reinforced structural column 10, wherein angle steel 21 is arranged at four column corners, transverse batten plates 22 are arranged between the angle steel 21, and the batten plates 22 and the angle steel 21 are welded. A certain gap is reserved between the outer-coated section steel and the reinforced structure, the thickness t1 of the gap is comprehensively determined according to the stress requirement and the construction requirement, and the inner side of the angle steel 21 is tightly filled with the reinforced structure column 10 by adopting the cushion block 24 so as to ensure the stability of the outer-coated section steel; in the previous step, a certain number of anchor holes 23 are preset on the batten plates 22 positioned in a certain area of the top and the foot of the column according to the force transmission requirement, and if the structure of the reinforced structural column 10 is higher, a certain number of anchor holes 23 can be reserved in the batten plates 22 in a certain range in the middle of the column;
s5, connecting the anchor bolt (steel bar) 31 with the reinforced structural column 10 by penetrating through the prepared hole 23 on the batten plate 22, wherein the depth of the anchor bolt (steel bar) 31 extending into the reinforced structural column 10 is determined according to the reinforcing structure requirement, the length t3 of the anchor bolt (steel bar) extending out of the batten plate 22 is determined according to the thicknesses B1 and B2 of the structural column to be increased, and a certain protective layer thickness is reserved;
s6, erecting a template at a certain distance outside the lattice structure of the section steel, and determining the distance between the template and the section steel by calculation according to the stress requirement of the reinforced body for bearing capacity improvement; the template and the section steel should be reliably connected, and the template has good sealing property;
s7, sequentially pouring micro-expansion grouting materials from the column base to the column top according to a set pouring sequence, wherein the grouting materials have micro-expansibility and are required to be poured densely;
and S8, after the grouting material reaches the strength required by the design, removing the template, and completing the structure column lattice type combined reinforcement construction.
The applicant successfully applies the invention to the design and construction of the Jinma wealth square project in Renshou county. The existing building of this project is that benevolence longevity county golden horse agricultural product wholesale market uses, comprises many a frame construction and two-layer basement in the underground on the ground, because the user's demand, plans to reform transform into golden horse international trade city, and service function changes, and the use load changes, needs to carry out the structural transformation and consolidates. Wherein, the bearing capacity of the structural column needs to be greatly improved (the bearing capacity is improved by more than 40 percent of the original structural column); because the commercial space has higher use requirement, the traditional enlarged cross section reinforcement can not meet the use requirement of building planning, and the subsequent reconstruction construction period is long; the traditional externally-coated steel reinforced engineering has high construction cost, and the adhesive is easy to age and limit to influence factors such as subsequent service life and the like; the present invention is designed to be adopted. The invention has the advantages of convenient construction, economic and reasonable structure, shortening the column body reinforcing and transforming period by 2 months, improving the construction efficiency and saving the labor cost. Through measurement and calculation, the project can save about 350 ten thousand of construction cost by adopting the invention, and the economic benefit is considerable.
While the embodiments of the invention have been described in detail in connection with the accompanying drawings, it is not intended to limit the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (10)
1. The utility model provides a structure is consolidated to rectangle structure post lattice combination formula which characterized in that: comprises a structural column and a section steel lattice wrapped on the peripheral surface of the structural column; the section steel lattice comprises angle steel and batten plates; the angle steels are arranged at four angular points of the structural column and are arranged in a pull-through manner along the height direction of the structural column between the floor slabs; batten plates are arranged between adjacent angle steels and are connected with the angle steels in a welding mode, and the batten plates are arranged along the annular direction of the angle steels and are distributed at intervals along the height direction of the structural column; the batten plate is provided with an anchor bolt which penetrates through a preformed hole in the batten plate and is in anchoring connection with the structural column; and a trapezoidal groove and a U-shaped groove are transversely formed in the structural column at the gap between the batten plates, and the trapezoidal groove and the U-shaped groove are connected with the newly-added micro-expansion grouting material in a meshed manner.
2. The rectangular structural column lattice unitized reinforcement structure of claim 1, wherein: and a plurality of anchor bolt holes which are distributed at equal intervals are preset on the batten plates positioned in the range of the top encryption area H3 and the base encryption area H1 of the structural column.
3. The rectangular structural column lattice unitized reinforcement structure of claim 1, wherein: the batten plate at the top and the bottom of the structural column is widened and is provided with more than two rows of batten plate anchor holes and anchor bolts.
4. The rectangular structural column lattice unitized reinforcement structure of claim 1, wherein: the joints of the structural columns, the longitudinal beams and the cross beams adopt steel bars of equal generation to penetrate through the longitudinal beams and the cross beams and are connected with the angle steels in a welding mode.
5. The rectangular structural column lattice unitized reinforcement structure of claim 1, wherein: the structure post four corners rounding is handled, sets up clearance t1 between angle steel and the concrete, sets up a plurality of layers of hoop and connects the batten plate along the angle steel direction of height, and the batten plate of each ring is four, and forms the closed loop with the angle steel welding that corresponds respectively.
6. The rectangular structural column lattice unitized reinforcement structure of claim 5, wherein: pad is clogged between lacing plate and the structure post, sets up the crab-bolt hole on the lacing plate, wears the crab-bolt in the crab-bolt hole and is connected with the anchor of structure post, and the length that the crab-bolt stretches out the lacing plate is t3, and length t3 is less than the increase thickness of structure post.
7. The rectangular structural column lattice unitized reinforcement structure of claim 1, wherein: the surface of the periphery of the structural column is provided with a trapezoidal groove and a U-shaped groove in a digging manner, the width of the notch of the trapezoidal groove and the notch of the U-shaped groove is 3 cm-6 cm, and the depth of the notch of the trapezoidal groove and the notch of the U-shaped groove is t 1; the length of trapezoidal groove notch and U-shaped groove notch is opened to the angle steel edge, and the trapezoidal notch and the U-shaped groove notch staggered arrangement of two adjacent faces of structure post, and nonadjacent trapezoidal notch and U-shaped groove notch are arranged with high on the structure post.
8. The rectangular structural column lattice unitized reinforcement structure of claim 1, wherein: the thickness of the cross section of the structural column is increased to be B1 and B2 respectively, and grouting materials are poured into the angle steel and the batten plate outside the vertical mold under pressure.
9. The method for the combined reinforcement structure of the rectangular structure column lattice according to any one of claims 1 to 8, comprising:
s1, according to the stress requirement for improving the bearing capacity of the structural column to be reinforced, selecting the structural sizes of angle steel and batten plates in the section steel lattice and the structural thickness of the outer side of the section steel lattice which needs to be increased;
s2, unloading the structural column;
s3, removing the decorative layer of the structural column, transversely and peripherally slitting the structural column, wherein the notch 40(40a) is trapezoidal or U-shaped, the section size and density of the notch are determined according to the structural size of the reinforced structural column and the reinforced force transmission, the notch is not pulled through in the circumferential direction, the notch is only required to be cut to the edge of the angle steel of the column corner, and the notches on the four sides of the structural column are arranged in a staggered mode;
s4, rounding the reinforced structural column, and wrapping steel lattices around the structural column, wherein angle steels are arranged at four column corners, batten plates are arranged among the angle steels, and the batten plates and the angle steels are welded; a gap t1 is reserved between the outer-wrapped steel lattice and the reinforced structure, and the inner side of the angle steel is tightly filled with the structural column by adopting a cushion block;
s5, adopting anchor bolts to penetrate through the reserved holes on the batten plates and be in anchoring connection with the reinforced structural columns;
s6, erecting a template outside the section steel lattice;
s7, sequentially pouring micro-expansion grouting materials from the column foot to the top of the structural column according to a preset pouring sequence;
and S8, after the grouting material reaches the design strength, removing the template to complete the structural column lattice type combined reinforcement construction.
10. The method of modular reinforcement construction for rectangular structural columns according to claim 9, wherein a plurality of anchor holes are previously provided in the gusset plates located at the top and bottom of the structural column at S3, and when the height of the structural column exceeds a preset value, a plurality of anchor holes are previously provided in a selected partial number of the gusset plates in the middle of the structural column.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110101305.1A CN112780077A (en) | 2021-01-26 | 2021-01-26 | Rectangular structure column lattice combined type reinforcing structure and method thereof |
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| CN202110101305.1A CN112780077A (en) | 2021-01-26 | 2021-01-26 | Rectangular structure column lattice combined type reinforcing structure and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162354A (en) * | 2022-07-19 | 2022-10-11 | 浙江大学建筑设计研究院有限公司 | Inner support lattice column deflection reinforcing structure and reinforcing method for foundation pit engineering |
-
2021
- 2021-01-26 CN CN202110101305.1A patent/CN112780077A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162354A (en) * | 2022-07-19 | 2022-10-11 | 浙江大学建筑设计研究院有限公司 | Inner support lattice column deflection reinforcing structure and reinforcing method for foundation pit engineering |
| CN115162354B (en) * | 2022-07-19 | 2024-03-19 | 浙江大学建筑设计研究院有限公司 | Inner support lattice column deflection reinforcing structure and reinforcing method for foundation pit engineering |
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