CN108049501B - Repairable prefabricated square steel pipe concrete column foot node and construction method - Google Patents
Repairable prefabricated square steel pipe concrete column foot node and construction method Download PDFInfo
- Publication number
- CN108049501B CN108049501B CN201810053467.0A CN201810053467A CN108049501B CN 108049501 B CN108049501 B CN 108049501B CN 201810053467 A CN201810053467 A CN 201810053467A CN 108049501 B CN108049501 B CN 108049501B
- Authority
- CN
- China
- Prior art keywords
- square steel
- holes
- column
- steel pipe
- steel tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 210
- 239000010959 steel Substances 0.000 title claims abstract description 210
- 239000004567 concrete Substances 0.000 title claims abstract description 101
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 16
- 239000004568 cement Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000005056 compaction Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000011376 self-consolidating concrete Substances 0.000 claims description 3
- 210000001226 toe joint Anatomy 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 238000009435 building construction Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003108 foot joint Anatomy 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Rod-Shaped Construction Members (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a repairable prefabricated square steel tube concrete column foot node and a construction method, wherein the column foot node comprises a square steel tube concrete column, a bottom plate and a foundation from top to bottom, and further comprises a repairing assembly for filling an end section of the square steel tube concrete column; the column foot node can realize the building construction method of factory prefabrication and field assembly. When the column base is damaged by vibration, the column base is convenient to detach, the feasibility of later maintenance is effectively improved, and the repair period of the component can be obviously shortened.
Description
Technical Field
The invention relates to a repairable prefabricated square steel pipe concrete column foot node and a construction method.
Background
The steel pipe concrete is a structural member formed by filling concrete in a steel pipe, and the steel pipe and the core concrete can bear external load together, so that the structure has the characteristics of high bearing capacity, good ductility and fire resistance and convenient construction, and is widely applied to the structural engineering fields of multi-high-rise buildings, large-span structures, high-rise structures, bridge structures, underground structures and the like. Meanwhile, the steel tube concrete combined structure can better meet the requirements of modern structures on 'light large span, prefabricated assembly and rapid construction', can be easily changed in a detachable manner and repaired, and can meet the related matching requirements of a novel industrial assembly type building structure system.
At present, researchers at home and abroad mainly develop more research work aiming at cast-in-situ steel tube structure column bases, and research on assembled steel tube structure column bases is quite limited. The domestic specification relates to the content of a concrete filled steel tube column base, and mainly refers to a design method of a steel structure column base. However, compared with steel structures, steel pipe concrete has high rigidity and high bearing capacity, and the rationality of the design method and the construction measures of the steel structures need to be studied in depth. Therefore, for multi-story high-rise steel structure building, how to make the column base not only simple in structure but also convenient in construction on the basis of meeting various comprehensive performances such as column base bearing capacity, anti-seismic performance and the like, and also meets the basic requirements of standardization and industrialization is a problem which has important significance and needs to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a repairable prefabricated square steel pipe concrete column foot node and a construction method, and solves the problems in the prior art.
One of the technical schemes adopted for solving the technical problems is as follows: the foot joint of the repairable prefabricated square steel tube concrete column comprises a square steel tube concrete column, a bottom plate, a foundation and a repairing component for filling a part of the square steel tube concrete column;
the square steel tube concrete column comprises a square steel tube and concrete filled in the square steel tube, wherein a diaphragm is arranged in the square steel tube concrete column along the cross section of the square steel tube concrete column, and the diaphragm divides the square steel tube concrete column into an upper section and a lower section; the upper surface of the diaphragm plate is provided with crisscross stiffening ribs; a core column is arranged in the lower section and welded on the lower surface of the diaphragm plate, and the lower end of the core column is placed on the bottom plate;
the bottom plate is a steel plate with an area larger than the cross section of the square steel pipe concrete column, and is provided with a core column through hole, a shear key through hole and a pulling-resistant piece through hole; the stem through holes are matched with the stem positions; the shear key through holes are arranged in the square steel tube projection, and are equidistantly arranged around the square steel tube projection by taking the core column through holes as circle centers and used for fixing the shear keys, and the shear keys are smooth circular screw rods arranged in the corrugated tubes; the anti-pulling component through hole is arranged outside the square steel pipe projection, is arranged outside the shear key through hole by taking the core column through hole as the center of a circle and is used for fixing an anti-pulling component, and the anti-pulling component comprises an anchor bolt and an inner threaded steel sleeve;
the shearing-resistant holes are reserved at the positions of the foundation and the positions, corresponding to the shearing-resistant key through holes, of the bottom plate, the shearing-resistant holes are formed through pre-buried corrugated pipes, the corrugated pipes are filled with self-compaction non-shrinkage cement-based materials, and the smooth screws penetrate through the shearing-resistant key through holes and are fixed in the shearing-resistant holes; the foundation is embedded with an inner threaded steel sleeve at the position corresponding to the anti-pulling piece through hole of the bottom plate, the inner threaded steel sleeve is provided with a tail bent rib, and the anchor bolt passes through the anti-pulling through hole and is bolted with the inner threaded steel sleeve;
the repairing assembly comprises two groove-shaped half steel pipes which are oppositely and symmetrically arranged and have the same height as the lower section of the square steel pipe concrete column, and two repairing bottom plates which are oppositely and symmetrically arranged; the groove-shaped semi-steel pipes are pushed into the lower parts of the diaphragm plates from the left side and the right side of the core column in opposite directions, and are welded into hollow square steel pipes; the upper part of the side wall of the groove-shaped semi-steel pipe is provided with a notch which is used for pouring self-compaction non-shrinkage cement-based material into the hollow square steel pipe; the repair bottom plate is a rectangular steel plate with semicircular through holes, the semicircular through holes are formed in the middle of the edge of the rectangular steel plate, the rectangular steel plate is symmetrically and oppositely arranged, and the two semicircular through holes are spliced to form the core column through hole.
In a preferred embodiment of the present invention, the core column comprises a round steel pipe concrete short column and a round end plate; the round end plate is welded at the lower end of the round steel pipe concrete short column, and a 1-2 mm gap is reserved between the round end plate and a core column through hole of the bottom plate.
In a preferred embodiment of the invention, the distance between the diaphragm and the lower end of the square steel tube concrete column is 1-1.5 times of the side length of the square steel tube.
In a preferred embodiment of the invention, the stem is welded to the center of the diaphragm and has a diameter of 1/4 to 1/3 of the side length of the square steel tube.
In a preferred embodiment of the invention, the diameter of the round end plate is the same as the diameter of the stem, and the thickness is the same as the thickness of the bottom plate.
In a preferred embodiment of the present invention, the shear key through holes and the pull-out preventing through holes reserved on the two repairing bottom plates are arranged the same as the bottom plate, and the repairing bottom plates and the bottom plate have the same size.
The invention also provides a construction method of the repairable prefabricated square steel pipe concrete column foot node, which comprises the following steps:
(1) Manufacturing a prefabricated square steel tube concrete column with a core column: one steel pipe is taken, a diaphragm is welded at the position 1 to 1.5 times of the side length from the lower end of the square steel pipe, and the diaphragm divides the square steel pipe into an upper section and a lower section; welding crisscross stiffening ribs on the upper surface of the diaphragm plate; welding a round steel pipe with the diameter of 1/4-1/3 of the side length of the square steel pipe on the lower surface of the diaphragm plate as a core column, pouring concrete in the square steel pipe and the round steel pipe, and welding a round end plate on the end part of the core column after curing to form a prefabricated square steel pipe concrete column with the core column;
(2) And (3) manufacturing a bottom plate: taking a steel plate with an area larger than the cross section of the prefabricated square steel pipe concrete column in the step (1) as a bottom plate, and forming a core column through hole, a shear key through hole and a pulling-resistant piece through hole on the bottom plate; the positions of the core column through holes are matched with the positions of the core columns to be installed, so that the positions of the shear key through holes are arranged in the projection of the square steel tube concrete column, and the shear key through holes are equidistantly arranged around the square steel tube concrete column by taking the core column through holes as circle centers; the opening position of the through hole of the pulling-resistant piece is positioned outside the projection of the square steel tube concrete column, and the through hole of the core column is arranged outside the through hole of the shear key by taking the through hole of the core column as the center of a circle;
(3) And (3) manufacturing and fixing a foundation: respectively reserving shear key holes and embedded inner thread steel sleeves with tail bent ribs at the positions corresponding to the shear key through holes and the anti-pulling piece through holes of the foundation and the bottom plate; forming the shear key holes through pre-buried corrugated pipes, filling self-compaction non-shrinkage cement-based materials in the corrugated pipes, and fixing the smooth screw rods in the shear key holes from top to bottom through the shear key through holes; the anchor bolts penetrate through the anti-pulling piece through holes from top to bottom and are bolted with the internal thread steel sleeve, and the fixation of the bottom plate and the foundation is completed;
(4) Splicing column foot nodes: and placing the prefabricated square steel tube concrete column with the core column on the bottom plate, correspondingly placing the round end plate at the end part of the core column in the core column through hole on the bottom plate, and then welding the splicing part of the opposite side steel tube concrete column and the bottom plate to finish the splicing of the prefabricated square steel tube concrete column with the core column and the foundation.
In a preferred embodiment of the present invention, the construction method for repairing the prefabricated square steel pipe concrete column foot node further comprises the following steps:
(5) Repairing the nodes:
(1) preparation before repair: cutting an outer-covered steel pipe below the diaphragm plate along the diaphragm plate, cleaning outer-layer concrete, reserving a round steel pipe concrete core column, removing an anchor bolt, a smooth round screw rod and a bottom plate, and simultaneously cleaning self-compacting non-shrinkage cement-based materials in the corrugated pipe to finish preparation work before repair;
(2) repairing:
taking two repairing bottom plates, symmetrically arranging the repairing bottom plates in opposite directions, splicing the two semicircular through holes into a core column through hole, and welding the spliced part; the anchor bolts penetrate through the anti-pulling piece through holes on the repairing bottom plate from top to bottom and are bolted with the internal thread steel sleeve; after self-compaction non-shrinkage cement-based materials are poured into the corrugated pipe, a smooth screw rod passes through a shear key through hole on the repairing bottom plate from top to bottom and is placed in the corrugated pipe;
taking two groove-shaped half steel pipes which are equal in height with the lower section of the square steel pipe concrete column, symmetrically pushing the two groove-shaped half steel pipes from the left side and the right side of the core column to the lower part of the diaphragm plate in opposite directions, and welding to form a hollow square steel pipe; a notch is formed in the upper portion of the side wall of the groove-shaped half steel pipe, and self-compacting concrete is poured into the hollow square steel pipe through the notch to finish repairing.
Compared with the background technology, the technical proposal has the following advantages:
1. the prefabricated square steel tube concrete column with the core column and the bottom plate can be produced in batch in factories, the anchor bolts are screwed into the steel sleeve through the anti-pulling piece through holes on the bottom plate in a one-to-one correspondence manner in a construction site, the smooth round shearing screw rod is inserted into the metal corrugated pipe, and the prefabricated square steel tube concrete column with the core column and the reinforced concrete foundation are installed and connected in a bolting connection mode, so that factory prefabrication and on-site assembly building processes are truly realized, on-site construction speed is effectively improved, and safety and reliability are greatly improved.
2. When the column base is damaged, the convenient disassembly is adopted, so that the feasibility of later maintenance is effectively improved, and the repair period of the component can be obviously shortened.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is an assembled schematic view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
FIG. 4 is a schematic view of the structure of the transverse partition plates, the crisscrossed stiffening ribs and the core column inside the square steel tube.
Fig. 5 is a schematic diagram of the structure of the base plate.
Fig. 6 is a schematic diagram of a repair floor structure.
Fig. 7 is a schematic diagram of a groove-shaped semi-steel pipe structure.
Fig. 8 is a schematic structural diagram of the pull-out resistant assembly of embodiment 1.
FIG. 9 is one of the working schemes of the step (5) (1) of the construction method of example 1.
FIG. 10 is a second schematic diagram of the construction method of example 1 in step (5) (1).
FIG. 11 is a schematic diagram showing the construction method of example 1 in the steps (5) and (2).
FIG. 12 is a second schematic diagram of the construction method of example 1 in step (5) (2).
Detailed Description
Example 1
Referring to fig. 1-12, a repairable prefabricated square steel pipe concrete column foot node comprises a square steel pipe concrete column 1, a bottom plate 2 and a foundation 3 from top to bottom, and further comprises a repairing component for filling a part section of a square steel pipe;
the square steel tube concrete column 1 is prefabricated in a factory, a diaphragm plate 13 is arranged in the square steel tube concrete column 1 along the cross section of the square steel tube concrete column, and the square steel tube concrete column 1 is divided into an upper section and a lower section by the diaphragm plate 13; the distance between the diaphragm 13 and the lower end of the square steel tube concrete column 1 is 1 to 1.5 times of the side length of the square steel tube concrete column 1.
The upper surface of the diaphragm plate is provided with a crisscross stiffening rib 131, the lower section is internally provided with a core column 132, the core column 132 is welded at the center of the lower surface of the diaphragm plate 13, and the diameter of the core column is 1/4-1/3 of the side length of the square steel tube concrete column 1; the stem comprises a round steel tube 132 filled with concrete 12, a round end plate 133; the lower end of the round steel tube 132 is welded with the round end plate 133, the positions of the core column through holes 22 of the bottom plate 2 and the round steel tube 132 are matched, and the diameter of the round end plate 133 is the same as the diameter of the round steel tube 132, and the thickness of the round end plate 133 is the same as the thickness of the bottom plate 2.
The bottom plate 2 is a rectangular steel plate which is prefabricated in a factory, is provided with a circular through hole in the center and is reserved with a plurality of bolt holes, the area of the rectangular steel plate is larger than the cross section area of the square steel tube concrete column 1, and the circular through hole is a core column through hole 22; the reserved bolt holes are respectively shear key through holes 23 and anti-pulling piece through holes 21;
the number of the shear key through holes 23 is 4, the shear key through holes are arranged in the projection of the square concrete filled steel tube column 1, and the shear key through holes are equidistantly arranged around the square concrete filled steel tube column 1 by taking the core column through holes 22 as circle centers and are used for fixing the shear key, and the shear key is a smooth round screw 313 and is arranged in the metal corrugated pipe 311; the surface of the smooth round screw 313 is coated with a layer of plastic film; the metal corrugated pipe 311 is used for forming holes on the foundation 3; the number of the anti-pulling piece through holes 21 is 4, the anti-pulling piece through holes are arranged at four corners of the bottom plate 2, and the anti-pulling piece through holes are arranged outside the shear key through holes 23 by taking the core column through holes 22 as circle centers and are used for fixing the anti-pulling component 32, and the anti-pulling component 32 comprises bolts 321 and an inner threaded steel sleeve 322;
4 shearing resistance holes are pre-buried in the foundation 3 and the positions corresponding to the shearing resistance key through holes 23 of the bottom plate 2, the shearing resistance holes are formed through metal corrugated pipes 311, self-compaction non-shrinkage cement base 312 is filled in each metal corrugated pipe 311, and the smooth screw 313 penetrates through the shearing resistance key through holes 23 and is fixed in the shearing resistance holes; 4 internally threaded steel sleeves 322 are pre-embedded at the positions of the foundation 3 corresponding to the anti-pulling piece through holes 21 of the bottom plate 2, the internally threaded steel sleeves 322 are provided with tail bent ribs 323, and the anchor bolts 321 penetrate through the anti-pulling piece through holes 21 and are bolted with the internally threaded steel sleeves 322; the inner screw steel sleeve 322 and the upper surface of the metal bellows 311 are exposed from the surface of the base 3.
The repairing assembly comprises two groove-shaped half steel pipes 4 which are oppositely and symmetrically arranged and have the same height as the lower section of the square steel pipe concrete column 1, and the groove-shaped half steel pipes are used for filling the lower section of the square steel pipe concrete column 1; the groove-shaped semi-steel pipes 4 are symmetrically and oppositely pushed into the lower part of the diaphragm from the left side and the right side of the core column, welding to form a hollow square steel pipe; the upper part of the side wall of the groove-shaped half steel pipe 4 is provided with a notch which is used for pouring self-compacting concrete into the hollow square steel pipe section.
The repair assembly further comprises two repair bottom plates 5, wherein shear key through holes 23 and pulling-resistant piece through holes 21 which have the same specification as the bottom plate 2 are formed in the repair bottom plates 5; the semicircular through holes are formed in the middle of the edge of the repairing bottom plate 5, the repairing bottom plate is symmetrically arranged in opposite directions, and the two semicircular through holes are spliced into a core column through hole 22.
The construction method of the repairable prefabricated square steel pipe concrete column foot node comprises the following steps:
(1) Prefabricated square steel pipe with core column and (3) manufacturing a concrete column: one steel pipe is taken, a diaphragm 13 is welded at the position 1 to 1.5 times of the side length from the lower end of the square steel pipe, and the diaphragm 13 divides the square steel pipe into an upper section and a lower section; the upper surface of the diaphragm 13 is welded with a crisscross stiffening rib 131, the lower surface of the diaphragm 13 is welded with a round steel pipe 132 with the diameter of 1/4-1/3 of the side length of a square steel pipe as a core column, concrete 12 is poured into the square steel pipe and the round steel pipe 132 of the core column, and after curing, the end part of the core column is welded with a round end plate 133 to form a precast square steel pipe concrete column 1 with the core column;
(2) Manufacturing a bottom plate 2: taking a steel plate with an area larger than the cross section of a square steel pipe concrete column as a bottom plate 2, and forming a core column through hole 22, a shear key through hole 23 and a pulling-resistant piece through hole 21 on the bottom plate 2; the stem through holes 22 are matched with positions of the stem to be installed, so that the shearing key through holes 23 are arranged in the projection of the square steel tube concrete column 1 and are equidistantly arranged around the stem through holes 22 serving as circle centers; the opening position of the pulling-resistant piece through hole 21 is positioned outside the projection of the square concrete filled steel tube 1, and is arranged outside the shear key through hole 23 by taking the core column through hole 22 as the center of a circle;
(3) Manufacturing and fixing a foundation 3: respectively reserving shear key holes and an internal thread steel sleeve 322 with a pre-buried tail bent rib 323 at the positions corresponding to the shear key through holes 23 and the anti-pulling piece through holes 21 of the foundation 3 and the bottom plate 2; forming the shear key holes through pre-buried metal corrugated pipes, and filling self-compaction non-shrinkage cement-based materials 312 in the metal corrugated pipes 311; the smooth screw 313 passes through the shear key through hole 23 from top to bottom and is fixed in the shear key hole; the anchor bolts 321 penetrate through the anti-pulling piece through holes 21 from top to bottom and are bolted with the inner threaded steel sleeves 322, so that the fixation of the bottom plate 2 and the foundation 3 is completed;
(4) Splicing column foot nodes: and placing the prefabricated square steel tube concrete column 1 with the core column on the bottom plate 2, correspondingly placing a round end plate 133 at the end part of the core column in a core column through hole on the bottom plate 2, and then welding the splicing part of the opposite steel tube concrete column 1 and the bottom plate 2 to finish the splicing of the prefabricated square steel tube concrete column 1 with the core column and the foundation 3.
The column foot node assembled by the construction method further comprises the following repairing steps:
(5) Repairing the nodes:
(1) preparation before repair: cutting an outer-covered steel pipe below the diaphragm plate 13 along the diaphragm plate 13, cleaning the outer-layer concrete 12, reserving round steel pipe concrete core columns, removing the anchor bolts 321, the smooth round screws 313 and the bottom plate 2, and simultaneously cleaning the self-compacting cement base 312 in the corrugated pipe 311 to finish the preparation work before repairing;
(2) repairing:
taking two repairing bottom plates 5, symmetrically arranging the repairing bottom plates 5 in opposite directions, splicing the two semicircular through holes into a core column through hole, and welding the spliced part; the anchor bolts 321 penetrate through the anti-pulling piece through holes 21 on the repairing bottom plate 5 from top to bottom and are bolted with the inner threaded steel sleeves 322; after the self-compaction non-shrinkage cement-based material 312 is poured into the metal corrugated pipe 311, a smooth round screw 313 is placed in the metal corrugated pipe 311 from top to bottom through the shear key through hole 23 on the repairing bottom plate;
taking two groove-shaped half steel pipes 4 with the same height as the lower section of the square steel pipe concrete column, symmetrically pushing the two groove-shaped half steel pipes 4 from the left side and the right side of the core column into the lower part of the diaphragm 13 in opposite directions, and welding to form a hollow square steel pipe; a notch is formed in the upper portion of the side wall of the groove-shaped half steel pipe 4, and a self-compaction non-shrinkage cement-based material is poured into the hollow square steel pipe through the notch to finish repairing.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and therefore should not be taken as limiting the scope of the invention, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.
Claims (6)
1. Repairable prefabricated square steel pipe concrete column foot node, its characterized in that: the system comprises a square steel tube concrete column, a bottom plate, a foundation and a repairing assembly for filling a part of the square steel tube concrete column section from top to bottom;
the square steel tube concrete column comprises a square steel tube and concrete filled in the square steel tube, wherein a diaphragm is arranged in the square steel tube concrete column along the cross section of the square steel tube concrete column, and the diaphragm divides the square steel tube concrete column into an upper section and a lower section; the upper surface of the diaphragm plate is provided with crisscross stiffening ribs; a core column is arranged in the lower section and welded on the lower surface of the diaphragm plate, and the lower end of the core column is placed on the bottom plate;
the bottom plate is a steel plate with an area larger than the cross section of the square steel pipe concrete column, and is provided with a core column through hole, a shear key through hole and a pulling-resistant piece through hole; the core column through holes are matched with the positions of the core columns, and the core columns comprise round steel pipe concrete short columns and round end plates; the shear key through holes are arranged in the square steel tube projection, and are equidistantly arranged around the square steel tube projection by taking the core column through holes as circle centers and used for fixing the shear keys, and the shear keys are smooth circular screw rods arranged in the corrugated tubes; the anti-pulling component through hole is arranged outside the square steel pipe projection, is arranged outside the shear key through hole by taking the core column through hole as the center of a circle and is used for fixing an anti-pulling component, and the anti-pulling component comprises an anchor bolt and an inner threaded steel sleeve;
the shearing-resistant holes are reserved at the positions of the foundation and the positions, corresponding to the shearing-resistant key through holes, of the bottom plate, the shearing-resistant holes are formed through pre-buried corrugated pipes, the corrugated pipes are filled with self-compaction non-shrinkage cement-based materials, and the smooth screws penetrate through the shearing-resistant key through holes and are fixed in the shearing-resistant holes; the corresponding part of the foundation and the anti-pulling piece through hole of the bottom plate is pre-embedded with an internal thread steel sleeve, the inner threaded steel sleeve is provided with a tail bent rib, and the anchor bolt passes through the anti-pulling through hole and is bolted with the inner threaded steel sleeve;
the repairing assembly comprises two groove-shaped half steel pipes which are oppositely and symmetrically arranged and have the same height as the lower section of the square steel pipe concrete column, and two repairing bottom plates which are oppositely and symmetrically arranged; the groove-shaped semi-steel pipes are pushed into the lower parts of the diaphragm plates from the left side and the right side of the core column in opposite directions, and are welded into hollow square steel pipes; the upper part of the side wall of the groove-shaped semi-steel pipe is provided with a notch which is used for pouring self-compaction non-shrinkage cement-based material into the hollow square steel pipe; the repair bottom plate is a rectangular steel plate with semicircular through holes, the semicircular through holes are formed in the middle of the edge of the rectangular steel plate, the rectangular steel plate is symmetrically and oppositely arranged, and the two semicircular through holes are spliced to form the core column through hole.
2. The repairable prefabricated square steel tube concrete column foot node of claim 1, wherein: the distance between the diaphragm plate and the lower end of the square steel tube concrete column is 1-1.5 times of the side length of the square steel tube.
3. The repairable prefabricated square steel tube concrete column foot node of claim 1, wherein: the core column is welded at the center of the diaphragm plate, and the diameter of the core column is 1/4-1/3 of the side length of the square steel tube.
4. The repairable prefabricated square steel tube concrete column foot node of claim 1, wherein: the shear key through holes and the anti-pulling piece through holes reserved on the two repairing bottom plates are arranged the same as the bottom plates, and the repairing bottom plates are the same as the bottom plates in size.
5. The construction method of the repairable prefabricated square steel pipe concrete column foot node is characterized by comprising the following steps of:
(1) Manufacturing a prefabricated square steel tube concrete column with a core column: one steel pipe is taken, a diaphragm is welded at the position 1-1.5 times of the side length from the lower end of the square steel pipe, and the diaphragm divides the square steel pipe into an upper section and a lower section; welding crisscross stiffening ribs on the upper surface of the diaphragm plate; welding a round steel pipe with the diameter of 1/4-1/3 of the side length of the square steel pipe on the lower surface of the diaphragm plate as a core column, pouring concrete in the square steel pipe and the round steel pipe, and welding a round end plate at the end part of the core column after curing to form a prefabricated square steel pipe concrete column with the core column;
(2) And (3) manufacturing a bottom plate: taking a steel plate with an area larger than the cross section of the prefabricated square steel pipe concrete column in the step (1) as a bottom plate, and forming a core column through hole, a shear key through hole and a pulling-resistant piece through hole on the bottom plate; the positions of the core column through holes are matched with the positions of the core columns to be installed, so that the positions of the shear key through holes are arranged in the projection of the square steel tube concrete column, and the shear key through holes are equidistantly arranged around the square steel tube concrete column by taking the core column through holes as circle centers; the opening position of the through hole of the pulling-resistant piece is positioned outside the projection of the square steel tube concrete column, and the through hole of the core column is arranged outside the through hole of the shear key by taking the through hole of the core column as the center of a circle;
(3) And (3) manufacturing and fixing a foundation: respectively reserving shear key holes and embedded inner thread steel sleeves with tail bent ribs at the positions corresponding to the shear key through holes and the anti-pulling piece through holes of the foundation and the bottom plate; forming the shear key holes through pre-buried corrugated pipes, filling self-compaction non-shrinkage cement-based materials in the corrugated pipes, and fixing the smooth screw rods in the shear key holes from top to bottom through the shear key through holes; the anchor bolts penetrate through the anti-pulling piece through holes from top to bottom and are bolted with the internal thread steel sleeve, and the fixation of the bottom plate and the foundation is completed;
(4) Splicing column foot nodes: and placing the prefabricated square steel tube concrete column with the core column on the bottom plate, correspondingly placing the round end plate at the end part of the core column in the core column through hole on the bottom plate, and then welding the splicing part of the opposite side steel tube concrete column and the bottom plate to finish the splicing of the prefabricated square steel tube concrete column with the core column and the foundation.
6. The method for constructing a repairable prefabricated square steel tube concrete toe joint of claim 5, further comprising the steps of:
(5) Repairing the nodes:
(1) preparation before repair: cutting an outer-covered steel pipe below the diaphragm plate along the diaphragm plate, cleaning outer-layer concrete, reserving a round steel pipe concrete core column, removing an anchor bolt, a smooth round screw rod and a bottom plate, and simultaneously cleaning self-compacting non-shrinkage cement-based materials in the corrugated pipe to finish preparation work before repair;
(2) repairing:
taking two repairing bottom plates, symmetrically arranging the repairing bottom plates in opposite directions, splicing the two semicircular through holes into a core column through hole, and welding the spliced part; the anchor bolts penetrate through the anti-pulling piece through holes on the repairing bottom plate from top to bottom and are bolted with the internal thread steel sleeve; after the self-compaction non-shrinkage cement-based material is poured into the corrugated pipe, the smooth screw rod passes through the shear key through hole on the repairing bottom plate from top to bottom and is placed in the corrugated pipe;
taking two groove-shaped half steel pipes which are equal in height with the lower section of the square steel pipe concrete column, symmetrically pushing the two groove-shaped half steel pipes from the left side and the right side of the core column to the lower part of the diaphragm plate in opposite directions, and welding to form a hollow square steel pipe; a notch is formed in the upper portion of the side wall of the groove-shaped half steel pipe, and self-compacting concrete is poured into the hollow square steel pipe through the notch to finish repairing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810053467.0A CN108049501B (en) | 2018-01-19 | 2018-01-19 | Repairable prefabricated square steel pipe concrete column foot node and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810053467.0A CN108049501B (en) | 2018-01-19 | 2018-01-19 | Repairable prefabricated square steel pipe concrete column foot node and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108049501A CN108049501A (en) | 2018-05-18 |
| CN108049501B true CN108049501B (en) | 2024-02-02 |
Family
ID=62127181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810053467.0A Active CN108049501B (en) | 2018-01-19 | 2018-01-19 | Repairable prefabricated square steel pipe concrete column foot node and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108049501B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403367B (en) * | 2018-12-07 | 2024-04-05 | 华中科技大学 | Assembled box transformer foundation and field construction method thereof |
| CN111945628A (en) * | 2020-08-10 | 2020-11-17 | 华蓝设计（集团）有限公司 | Repairable assembly type combined anti-collision guardrail and construction method thereof |
| CN113323003A (en) * | 2021-06-15 | 2021-08-31 | 中国建筑第八工程局有限公司 | Cement tank foundation capable of being circulated and construction method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012026147A (en) * | 2010-07-22 | 2012-02-09 | Yoshikuni Okura | Column base fitting |
| CN104847052A (en) * | 2015-04-29 | 2015-08-19 | 华侨大学 | Earthquake damage replaceable combination column structure |
| CN105863167A (en) * | 2016-05-29 | 2016-08-17 | 湖南大学 | Dismountable assembly type circular steel tube concrete column |
| CN105888058A (en) * | 2016-04-13 | 2016-08-24 | 华侨大学 | Damage-recoverable assembly type combination column pin |
| CN106149978A (en) * | 2015-03-31 | 2016-11-23 | 天津市建工工程总承包有限公司 | Steel framework post with joint type attachment means |
| CN106703290A (en) * | 2016-12-22 | 2017-05-24 | 华侨大学 | Detachable-assembly type concrete-filled steel tube column and construction method thereof |
| CN107254884A (en) * | 2017-07-28 | 2017-10-17 | 湖南大学 | A kind of detachable prefabricated assembled concrete-filled steel square tubular column pin node |
| CN207934195U (en) * | 2018-01-19 | 2018-10-02 | 华侨大学 | One kind can repair prefabricated assembled concrete-filled steel square tubular column foot node |
-
2018
- 2018-01-19 CN CN201810053467.0A patent/CN108049501B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012026147A (en) * | 2010-07-22 | 2012-02-09 | Yoshikuni Okura | Column base fitting |
| CN106149978A (en) * | 2015-03-31 | 2016-11-23 | 天津市建工工程总承包有限公司 | Steel framework post with joint type attachment means |
| CN104847052A (en) * | 2015-04-29 | 2015-08-19 | 华侨大学 | Earthquake damage replaceable combination column structure |
| CN105888058A (en) * | 2016-04-13 | 2016-08-24 | 华侨大学 | Damage-recoverable assembly type combination column pin |
| CN105863167A (en) * | 2016-05-29 | 2016-08-17 | 湖南大学 | Dismountable assembly type circular steel tube concrete column |
| CN106703290A (en) * | 2016-12-22 | 2017-05-24 | 华侨大学 | Detachable-assembly type concrete-filled steel tube column and construction method thereof |
| CN107254884A (en) * | 2017-07-28 | 2017-10-17 | 湖南大学 | A kind of detachable prefabricated assembled concrete-filled steel square tubular column pin node |
| CN207934195U (en) * | 2018-01-19 | 2018-10-02 | 华侨大学 | One kind can repair prefabricated assembled concrete-filled steel square tubular column foot node |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108049501A (en) | 2018-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107989227B (en) | Assembled steel reinforced concrete shear wall structure and preparation and installation methods thereof | |
| CN108331158B (en) | On-site connection method of prefabricated reinforced concrete beam column | |
| WO2019056716A1 (en) | Fully-assembled prestress concrete frame anti-seismic energy dissipation member system and construction method | |
| CN105649360A (en) | Integral assembling type building system and installing method | |
| CN108049501B (en) | Repairable prefabricated square steel pipe concrete column foot node and construction method | |
| CN108005410B (en) | Assembled steel-concrete combined structure residential system and construction method thereof | |
| CN107989228B (en) | Prefabricated steel reinforced concrete shear wall structure and preparation and installation methods thereof | |
| CN108005265B (en) | Multilayer prefabricated steel reinforced concrete shear wall structure and preparation and construction methods thereof | |
| CN108005264B (en) | Steel frame constraint precast reinforced concrete shear wall structure and preparation and installation methods | |
| CN108775084B (en) | Steel-concrete combined precast beam and precast column connecting structure and construction method | |
| CN108240053B (en) | Assembled integral energy-consumption frame wallboard system and construction method | |
| CN210086489U (en) | Dry-type connected low-rise assembly type building structure system | |
| CN105064612A (en) | Steel-concrete combined special-shaped column with thermal insulating and load bearing integrated and preparation method thereof | |
| CN113700139B (en) | Prefabricated assembled bolted connection constructional column ring beam and construction method | |
| CN108867885B (en) | Damping energy consumption assembly node of prefabricated column and integrated prefabricated beam slab and construction method thereof | |
| CN212336419U (en) | Assembled composite wall based on steel pipe | |
| CN210459769U (en) | Prefabricated hollow column and assembled concrete column | |
| CN108005266B (en) | Strip steel frame precast reinforced concrete shear wall structure and preparation and installation methods | |
| CN111663682A (en) | Assembly type wall body connecting structure based on ribbed box and construction method thereof | |
| CN204266370U (en) | Prefabricated SRC-S-RC post beam shear wall supports floor assembling system | |
| CN114108808A (en) | PVC-FRP (polyvinyl chloride-fiber reinforced plastic) pipe concrete column and concrete composite beam combined structure with adjustable connecting nodes and installation method thereof | |
| CN114293686A (en) | Profiled steel reinforced concrete combined shear wall, connecting joint and construction method | |
| CN114482267A (en) | Assembled hollow corrugated sandwich concrete filled steel tube combined frame structure system | |
| CN106088324A (en) | A kind of difunctional node of the light steel of the formula that is linked and packed light wall floor | |
| CN207934195U (en) | One kind can repair prefabricated assembled concrete-filled steel square tubular column foot node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |