CN110835929A - Half-outer-wrapping half-embedded steel column base structure and construction method thereof - Google Patents
Half-outer-wrapping half-embedded steel column base structure and construction method thereof Download PDFInfo
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- CN110835929A CN110835929A CN201911197481.9A CN201911197481A CN110835929A CN 110835929 A CN110835929 A CN 110835929A CN 201911197481 A CN201911197481 A CN 201911197481A CN 110835929 A CN110835929 A CN 110835929A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 207
- 239000010959 steel Substances 0.000 title claims abstract description 207
- 238000010276 construction Methods 0.000 title claims abstract description 53
- 238000012946 outsourcing Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 239000004567 concrete Substances 0.000 claims description 34
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 17
- 238000012856 packing Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
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- 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
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- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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Abstract
The invention provides a half-outer-wrapping half-embedded steel column base structure and a construction method thereof. Half outer package half-buried formula steel column foot structure includes raft foundation, steel structure post and outsourcing foundation column, is equipped with the pit on the raft foundation, and in the column base of steel structure post was fixed in the pit, the outsourcing foundation column cladding formed on the column base outer peripheral face of steel structure post, and outsourcing foundation column lower extreme is fixed in the pit and the upper end extends to raft foundation upper surface top. The construction method is used for constructing the half-externally-wrapped and half-embedded steel column base structure. The invention can effectively solve the problems that the huge bending moment of the upper steel column is transferred to the foundation and how to safely transfer the horizontal force at the bottom of the steel column base in the prior art; the invention has the advantages of simple construction, providing space for laying underground pipelines and saving construction cost.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a half-externally-wrapped and half-embedded steel column base structure and a construction method thereof.
Background
The connection between the steel column base and the foundation of the existing high-rise steel frame building generally adopts an external wrapping type or embedded type rigid column base connection mode.
To the high-rise steel frame building that does not have the basement, the connection of traditional outer cladding formula steel column foot and raft foundation faces two problems: 1. the bending-resistant connection structure between the steel column foot and the raft foundation requires arranging complex steel stiffening ribs on the bottom plate; 2. when the raft foundation and the externally-coated steel column base short column cannot be poured once for construction, potential safety hazards exist in the transmission of large horizontal force of the steel column base. If adopt traditional formula steel column foot of buryying and raft foundation to be connected, also face two problems: 1. the cost is wasted if the raft foundation is too thick; 2. the raft foundation is too shallow, which is not favorable for laying underground pipelines.
Disclosure of Invention
The invention aims to provide a semi-externally-wrapped and semi-embedded steel column base structure and a construction method thereof, which can meet the installation requirement of a steel structure column, and can provide enough space for laying underground pipelines while effectively reducing the thickness of a raft foundation.
In order to achieve the above purpose, the present invention provides a semi-externally-covered and semi-embedded steel column base structure, wherein the semi-externally-covered and semi-embedded steel column base structure includes a raft foundation, a steel structure column and an externally-covered foundation column, a pit is formed on the raft foundation, a column base of the steel structure column is fixed in the pit, the externally-covered foundation column is formed on an outer circumferential surface of the column base of the steel structure column in a wrapping manner, a lower end of the externally-covered foundation column is fixed in the pit, and an upper end of the externally-covered foundation column extends above an upper surface of the raft foundation.
The semi-externally-coated semi-embedded steel column base structure comprises a base plate and a column body, wherein the lower end of the column body is connected with the base plate, concrete is poured into the column body, a plurality of studs are arranged in an area, coated by the externally-coated foundation column, on the outer surface of the column body, and one end, protruding out of the outer surface of the column body, of each stud is embedded into the externally-coated foundation column.
The above-mentioned half-encased half-embedded steel column base structure, wherein the plurality of studs are divided into a plurality of groups from top to bottom, the distance between two adjacent groups is less than or equal to 200mm, and each group includes 4 to 20 studs arranged at intervals along the circumferential direction of the column.
The half-encased and half-embedded steel column base structure comprises a concave pit, a connecting component and a connecting component, wherein the connecting component is fixedly arranged on the bottom surface of the concave pit, the connecting component comprises an embedded plate, a plurality of anchor bars and a plurality of screw rods penetrating through the embedded plate, each anchor bar is arranged below the embedded plate and is vertical to the embedded plate, the upper end of each anchor bar is fixedly connected with the embedded plate, each anchor bar and the embedded plate are embedded in the raft foundation, the upper surface of the pre-embedded plate is flush with the bottom surface of the pit, the lower end of each screw rod penetrates through the pre-embedded plate and is embedded in the raft foundation, the upper end of each screw rod extends upwards to protrude out of the bottom surface of the pit, and under the state that the column feet of the steel structure column are fixed in the pits, the upper end of each screw rod penetrates through the bottom plate, and the bottom plate is fixedly connected with the embedded plate.
The semi-externally-coated and semi-embedded steel column base structure comprises a semi-externally-coated and semi-embedded steel column base, wherein the externally-coated foundation column is a reinforced concrete structure which is cast and coated on the outer peripheral surface of the column base of the steel column, and the raft foundation is formed by pouring reinforced concrete.
In order to achieve the above object, the present invention further provides a construction method of a half-encased half-embedded steel column base structure, wherein the construction method of the half-encased half-embedded steel column base structure can be used for constructing the half-encased half-embedded steel column base structure as described above, and the construction method of the half-encased half-embedded steel column base structure comprises:
constructing a raft foundation, and presetting a pit on the upper surface of the raft foundation;
building a steel structure column, and fixing the lower end of the steel structure column in the pit;
and constructing and forming an outer wrapping foundation column on the outer surface of the column base of the steel structure column.
The above construction method of the half-encased and half-embedded steel column foot structure, wherein the raft foundation is built, and the upper surface of the raft foundation is pre-provided with the pits, comprises:
strapping and laying raft reinforcing steel bars, outer-wrapped foundation reinforcing steel bars, connecting members and pit molds, enabling the upper surfaces of the pre-embedded plates of the connecting members to be in contact with the lower surfaces of the pit molds in a fitting manner, enabling the lower ends of the outer-wrapped foundation reinforcing steel bars to penetrate through the pit molds and extend downwards to the lower sides of the pit molds, pouring concrete, enabling the lower ends of the outer-wrapped foundation reinforcing steel bars, the lower ends of the screw rods of the connecting members, the pre-embedded plates of the connecting members and the anchor bars of the connecting members to be embedded in the concrete, dismantling the pit molds after the concrete is initially set, maintaining the concrete, and completing the construction of the raft foundation.
The construction method of the half-encased and half-embedded steel column base structure as described above, wherein the step of constructing the steel structural column so that the lower end of the steel structural column is fixed in the pit, comprises:
placing the column feet of the steel structure column into the pits, enabling the screw rods to penetrate through the bottom plate of the steel structure column, attaching the bottom plate to the embedded plate, and welding and fixing the bottom plate and the embedded plate; according to the preset height of the outer-coated foundation column, a plurality of studs can be arranged on the outer surface of the steel structure column body in the area coated by the outer-coated foundation column in a welding mode, concrete is poured into the steel structure column, and the steel structure column is built.
The construction method of the semi-externally-wrapped and semi-embedded steel column base structure, wherein the step of constructing and forming the externally-wrapped foundation column on the outer surface of the column base of the steel column, comprises the following steps:
and arranging an outer packing foundation mold outside the column foot of the steel structure column, pouring concrete between the outer packing foundation mold and the steel structure column, dismantling the outer packing foundation mold after the concrete is initially set, curing the concrete, and finishing the construction of the outer packing foundation column.
The construction method of the half-externally-coated and half-embedded steel column base structure further comprises, before the step of arranging an externally-coated foundation mold on the outer side of the column base of the steel column:
arranging raft plate supplement steel bars in the pits, and welding and fixing the raft plate supplement steel bars and the raft plate steel bars.
Compared with the prior art, the invention has the following advantages:
according to the construction method of the semi-externally-coated semi-embedded steel column base structure and the semi-externally-coated semi-embedded steel column base structure obtained through construction, the column base of the steel structure column is embedded into the pit, and the bottom of the column base of the steel structure column is not required to be provided with complex steel stiffening ribs by utilizing the rigidity provided by the peripheral raft foundation, so that construction is simple and convenient, meanwhile, the steel structure column is combined with the externally-coated foundation column with enough rigidity, and the problem that huge bending moment of an upper steel column is transmitted to the foundation is effectively solved; in addition, in actual construction, the raft foundation and the externally-wrapped foundation column cannot be formed in a one-step pouring mode, so that the problem of safely transmitting the horizontal force at the bottom of the steel column foot can be effectively solved by designing the pits in the raft foundation; in addition, compare with traditional formula steel column foot of buryying, reduced the degree of depth that the steel construction post buryyed the raft foundation through the setting of outsourcing foundation column, provide the space for laying of underground pipeline, simultaneously, the raft foundation need not be done like traditional formula steel column foot of buryying is so thick, saves the cost.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
fig. 1 is a schematic structural diagram of a half-encased half-embedded steel column base structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a raft foundation of a semi-encased semi-embedded steel column foot structure according to an embodiment of the present invention;
fig. 3 is a schematic top view of a raft foundation and a steel structure column of the semi-externally-wrapped and semi-embedded steel column base structure according to an embodiment of the present invention;
fig. 4 is a schematic horizontal sectional view of a steel column with a semi-encased semi-embedded steel column base structure according to an embodiment of the present invention after being combined with an encased foundation column;
fig. 5 is a schematic front view of embedded parts and anchor bars in connecting members of a raft foundation of a semi-externally-wrapped semi-embedded steel column foot structure according to an embodiment of the present invention;
fig. 6 is a schematic bottom view of the attachment structures and anchor bars in the attachment components of the raft foundation of the semi-externally-wrapped semi-embedded steel column foot structure according to an embodiment of the present invention;
fig. 7 is a schematic top view of a steel column with a semi-encased semi-embedded steel column base structure according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating steps of a construction method of a half-encased half-embedded steel column base structure according to a second embodiment of the present invention;
fig. 9 is a flowchart illustrating another step of the construction method of the half-encased half-embedded steel column base structure according to the second embodiment of the present invention;
the reference numbers illustrate:
1. a raft foundation;
11. a pit;
12. a connecting member;
121. pre-burying a plate;
122. anchoring ribs;
123. a screw;
13. raft plate steel bars;
14. reinforcing steel bars are supplemented to the raft plates;
2. a steel structural column;
21. a base plate;
22. a cylinder;
23. a stud;
3. wrapping a foundation column outside;
31. longitudinal reinforcing steel bars;
32. and (5) hooping.
Detailed Description
In order to clearly understand the technical solution, the purpose and the effect of the present invention, a detailed description of the present invention will be described with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 5, the present invention provides a semi-externally-wrapped and semi-embedded steel column base structure, wherein the semi-externally-wrapped and semi-embedded steel column base structure includes a raft foundation 1, a steel structure column 2 and an externally-wrapped foundation column 3, a pit 11 is provided on the raft foundation 1, a column base of the steel structure column 2 is fixed in the pit 11, the externally-wrapped foundation column 3 is formed on an outer peripheral surface of the column base of the steel structure column 2 in a wrapping manner, a lower end of the externally-wrapped foundation column 3 is fixed in the pit 11, an upper end of the externally-wrapped foundation column 3 extends to above an upper surface of the raft foundation 1, so that a part of the column base of the steel structure column 2 is embedded in the raft foundation 1, and a part of the column base of the steel structure column 2 above the raft foundation 1 is wrapped by the externally-wrapped foundation column 3, thereby forming the semi-externally-wrapped and semi-embedded;
compared with the traditional steel column base for outsourcing, the semi-outsourcing and semi-embedding type steel column base structure provided by the invention has the advantages that the column base of the steel structure column 2 is embedded into the concave pit 11, and the rigidity provided by the peripheral raft foundation 1 is utilized, so that the bottom of the column base of the steel structure column 2 is not required to be provided with complex steel stiffening ribs, the construction is simple and convenient, meanwhile, the steel structure column 2 is combined with the outsourcing foundation column 3 with enough rigidity, and the problem that huge bending moment of an upper steel column is transmitted to a foundation is effectively solved; in addition, in actual construction, the raft foundation 1 and the outer-wrapped foundation columns 3 cannot be formed in a one-step pouring mode, so that the pit 11 is designed in the raft foundation 1, and the problem of safe transmission of the horizontal force at the bottoms of the steel column bases can be effectively solved; in addition, compare with traditional formula steel column foot of buryying, the setting through outsourcing foundation column 3 has reduced the degree of depth that steel construction column 2 burys raft foundation 1, provides the space for laying of underground pipeline, and simultaneously, raft foundation 1 need not do and bury formula steel column foot as thick as traditional, saves the cost.
Further, the depth of the pit 11 is 450 mm-550 mm, wherein, preferably 500mm, at this moment, can satisfy the installation requirement of steel structure column 2, can avoid the pit 11 too deeply to lead to the condition that raft foundation 1 is too thick to increase the cost of construction to take place simultaneously.
Further, as shown in fig. 1, fig. 3, fig. 4 and fig. 5, the semi-externally-wrapped and semi-embedded steel column base structure provided by the present invention includes a steel column 2, wherein the steel column 2 includes a bottom plate 21 and a column body 22, a lower end of the column body 22 is connected (welded and fixed) to an upper surface of the bottom plate 21, concrete is poured into the column body 22, a plurality of studs 23 are disposed in an area of an outer surface of the column body 22, which is covered by the externally-wrapped foundation column 3, when the externally-wrapped foundation column 3 is covered and fixed on the outer surface of the column body 22, one end of each stud 23 protruding from the outer surface of the column body 22 is embedded into the externally-wrapped foundation column 3, and the studs 23 are disposed to facilitate transmission of a shear force between the steel column 2 and.
The arrangement of the peg 23 is specifically: referring to fig. 1, 2 and 4, the plurality of studs 23 are divided into a plurality of groups from top to bottom, the distance between two adjacent groups is less than or equal to 200mm, and each group includes 4 to 20 studs 23 arranged at intervals along the circumferential direction of the column 22;
preferably, the plurality of pegs 23 in each group are divided into four subgroups again, each subgroup includes at least two pegs 23, each peg 23 in each subgroup extends towards the same direction and is arranged at intervals in the horizontal plane, the pegs 23 in the four subgroups respectively face four different directions, and the four different directions are determined by being uniformly separated along the axial direction of the column 22, that is, an included angle of 90 ° is formed between the extending directions of the pegs 23 in each two adjacent subgroups.
Further, as shown in fig. 1, 2, 6 and 7, the present invention provides a half-externally-wrapped and half-embedded steel column foot structure, wherein a connecting member 12 is fixedly disposed on the bottom surface of the pit 11, the connecting member 12 includes an embedded plate 121, a plurality of anchor bars 122 and a plurality of screws 123 penetrating through the embedded plate 121, each anchor bar 122 is disposed below the embedded plate 121 and perpendicular to the embedded plate 121, the upper end of each anchor bar 122 is fixedly connected (welded) with the embedded plate 121, each anchor bar 122 and the embedded plate 121 are embedded inside the raft foundation 1, the upper surface of the embedded plate 121 is flush with the bottom surface of the pit 11, the lower end of each screw 123 penetrates through the embedded plate 121 and is embedded inside the raft foundation 1, the upper end of each screw 123 extends upward to protrude out of the bottom surface of the pit 11, the upper end of each screw 123 penetrates through the bottom plate 21 and the bottom plate 21 is fixedly connected with the embedded plate 121 in a state that the column foot of the steel column 2 is fixed in the pit 11, by arranging the embedded plate 121 to be embedded in the raft foundation 1 and to be welded and fixed with the bottom plate 21, the connection area between the bottom plate 21 of the steel structure column 2 and the raft foundation 1 can be effectively increased, and the screw 123 and the anchor bar 122 are cooperatively arranged to improve the connection reliability between the raft foundation 1 and the steel structure column 2.
Preferably, as shown in fig. 1, 2 and 4, the semi-externally-covered and semi-embedded steel column base structure provided by the present invention, wherein the externally-covered foundation column 3 is a reinforced concrete structure cast and covered on the outer circumferential surface of the column base of the steel structural column 2, the steel structural column 2 is internally provided with a plurality of longitudinal steel bars 31 perpendicular to the bottom surface of the recess 11, and a plurality of hooping 32 horizontally arranged and vertically arranged at intervals, the plurality of longitudinal steel bars 31 are uniformly arranged at intervals along the circumferential direction of the recess 11, the lower ends of the longitudinal steel bars 31 respectively penetrate and extend to the inside of the base raft foundation 1 at the edge of the bottom surface of the recess 11, so as to firmly connect the externally-covered foundation column 3 with the raft foundation 1 after the externally-covered foundation column 3 is cast, each hoop 32 surrounds the outer side of each longitudinal steel bar 31 and is welded and fixed with each longitudinal steel bar 31, so as to form a steel reinforcement cage of the externally-covered foundation column 3, the concrete used when the outer wrapping foundation column 3 is poured and the concrete poured inside the column body 22 of the steel structure column 2 are the same concrete, so that the stress on two sides of the column body 22 of the steel structure column 2 is balanced;
the raft foundation 1 is formed by pouring reinforced concrete, the interior of the raft foundation 1 comprises a plurality of horizontally arranged raft steel bars 13 and a plurality of raft complementary steel bars 14 arranged in the pits 11, wherein one part of raft plate reinforcing steel bars 13 extend along a first direction and are arranged at intervals, the other part of raft plate reinforcing steel bars 13 extend along a second direction and are arranged at intervals, the first direction and the second direction are mutually vertical, a plurality of raft plate reinforcing steel bars 13 are welded to form a reinforcing cage of the raft foundation 1, forming a raft foundation 1 after the concrete pouring is finished, arranging raft supplement steel bars 14 after the raft foundation 1 is poured, specifically, removing the concrete at the inner side wall of the pit 11 to expose the raft steel bars 13 at the position close to the inner side wall of the pit 11, welding and fixing the raft supplement steel bars 14 and the exposed raft steel bars 13, through setting up raft supplemental reinforcement 14 can carry out the structure reinforcement to raft foundation 1 in the within range of pit.
It should be noted that the arrangement manner of the reinforcement cage in the outer wrapping foundation column 3 and the arrangement manner of the reinforcement cage in the raft foundation 1 are only preferred embodiments of the present invention, and those skilled in the art may also use other arrangement manners to set the connection manner and the arrangement direction of the various reinforcements, which is not limited to this.
Compared with the prior art, the invention has the following advantages:
according to the semi-externally-wrapped and semi-embedded steel column base structure, the column base of the steel structure column is embedded into the pit, and the rigidity provided by the peripheral raft foundation is utilized, so that the bottom of the column base of the steel structure column does not need to be provided with complex steel stiffening ribs, the construction is simple and convenient, meanwhile, the steel structure column is combined with the externally-wrapped foundation column with enough rigidity, and the problem that huge bending moment of the upper steel column is transmitted to the foundation is effectively solved; in addition, in actual construction, the raft foundation and the externally-wrapped foundation column cannot be formed in a one-step pouring mode, so that the problem of safely transmitting the horizontal force at the bottom of the steel column foot can be effectively solved by designing the pits in the raft foundation; in addition, compare with traditional formula steel column foot of buryying, reduced the degree of depth that the steel construction post buryyed the raft foundation through the setting of outsourcing foundation column, provide the space for laying of underground pipeline, simultaneously, the raft foundation need not be done like traditional formula steel column foot of buryying is so thick, saves the cost.
Example two
As shown in fig. 8, the present invention further provides a construction method of a half-encased half-embedded steel column base structure, wherein the construction method of the half-encased half-embedded steel column base structure can be used for constructing the half-encased half-embedded steel column base structure according to the first embodiment, and the construction method of the half-encased half-embedded steel column base structure includes:
constructing a raft foundation, and presetting a pit on the upper surface of the raft foundation;
building a steel structure column, and fixing the lower end of the steel structure column in the pit;
and constructing and forming an outer wrapping foundation column on the outer surface of the column base of the steel structure column.
Further, as shown in fig. 9, the construction method of the semi-externally-wrapped and semi-embedded steel column foot structure provided by the invention, wherein a raft foundation is built, and a pit is preset on the upper surface of the raft foundation, specifically includes:
strapping and laying raft reinforcing steel bars, outer-wrapping foundation reinforcing steel bars, connecting members and pit molds, enabling the upper surfaces of the pre-embedded plates of the connecting members to be in contact with the lower surfaces of the pit molds in a fitting manner, enabling the lower ends of the outer-wrapping foundation reinforcing steel bars to penetrate through the pit molds and extend downwards to the lower sides of the pit molds, pouring concrete, enabling the lower ends of the outer-wrapping foundation reinforcing steel bars, the lower ends of the screw rods of the connecting members, the pre-embedded plates of the connecting members and the anchor bars of the connecting members to be embedded in the concrete, dismantling the pit molds after the concrete is initially set, maintaining the concrete, completing the construction of the raft foundation, directly fixing the lower ends of the reinforcing cages of the outer-wrapping foundation columns in the concrete of the raft foundation in the process of constructing the raft foundation, and effectively ensuring the firmness of the outer.
Further, as shown in fig. 9, the construction method of the half-encased and half-embedded steel column base structure provided by the present invention, wherein the steel structure column is constructed such that the lower end of the steel structure column is fixed in the pit, specifically comprises:
placing the column foot of the steel structure column in the pit, enabling each screw to penetrate through the bottom plate of the steel structure column, attaching the bottom plate to the embedded plate, and welding and fixing the bottom plate and the embedded plate; according to the preset height of the outer wrapping foundation column, a plurality of studs are welded on the outer surface of the steel structure column body in the area which can be wrapped by the outer wrapping foundation column, concrete is poured into the steel structure column, and the steel structure column is built;
wherein, when the welding sets up the peg, can divide the peg into the multiunit from top to bottom, along the axial of steel construction post, distance between every two sets of adjacent pegs is less than or equal to 200mm, and the number of every group peg is the multiple of four best, as preferred, can divide into four subgroups with every group peg, be equipped with two at least pegs in every subgroup best, and the extending direction of each peg in every group is the same, the extending direction of four subgroups's peg is confirmed along the even interval of circumference of steel construction post, the contained angle between the extending direction of every two sets of adjacent subgroups's peg promptly is 90.
Further, as shown in fig. 9, the construction method of the semi-externally-wrapped and semi-embedded steel column base structure provided by the present invention, wherein the building of the externally-wrapped foundation column on the outer surface of the column base of the steel column specifically includes:
and arranging an outer packing foundation mold outside the column foot of the steel structure column, pouring concrete between the outer packing foundation mold and the steel structure column, dismantling the outer packing foundation mold after the concrete is initially set, curing the concrete, and finishing the construction of the outer packing foundation column.
Wherein, be in the outside of the column foot in steel construction column set up outsourcing basic mold before, still include:
lay raft and supply the reinforcing bar in the pit, supply reinforcing bar and raft reinforcing bar welded fastening with the raft, specifically for will be close to the outer thinner one deck concrete of cladding of the raft reinforcing bar of pit lateral wall position department, make the valve plate reinforcing bar that is close to pit lateral wall position department expose, supply reinforcing bar and the raft reinforcing bar welded fastening who exposes with the raft, through setting up raft and supplying the reinforcing bar, can carry out the reinforcement to the structural strength of raft foundation in the within range of pit.
Compared with the prior art, the invention has the following advantages:
according to the semi-externally-coated semi-embedded steel column base structure obtained by the construction method of the semi-externally-coated semi-embedded steel column base structure, the column base of the steel structure column is embedded into the pit, and the rigidity provided by the peripheral raft foundation is utilized, so that the bottom of the column base of the steel structure column is not required to be provided with complex steel stiffening ribs, the construction is simple and convenient, meanwhile, the steel structure column is combined with the externally-coated foundation column with enough rigidity, and the problem that huge bending moment of the upper steel column is transmitted to the foundation is effectively solved; in addition, in actual construction, the raft foundation and the externally-wrapped foundation column cannot be formed in a one-step pouring mode, so that the problem of safely transmitting the horizontal force at the bottom of the steel column foot can be effectively solved by designing the pits in the raft foundation; in addition, compare with traditional formula steel column foot of buryying, reduced the degree of depth that the steel construction post buryyed the raft foundation through the setting of outsourcing foundation column, provide the space for laying of underground pipeline, simultaneously, the raft foundation need not be done like traditional formula steel column foot of buryying is so thick, saves the cost.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. The utility model provides a half outer half embedded steel column foot structure, its characterized in that, half outer half embedded steel column foot structure includes raft foundation, steel structure post and outsourcing foundation column, be equipped with the pit on the raft foundation, the column foot of steel structure post is fixed in the pit, outsourcing foundation column cladding form in on the outer peripheral face of the column foot of steel structure post, the lower extreme of outsourcing foundation column is fixed in the pit, the upper end of outsourcing foundation column extends to the top of the upper surface on raft foundation.
2. The semi-encased semi-embedded steel column base structure of claim 1, wherein the steel column comprises a bottom plate and a column body, the lower end of the column body is connected with the bottom plate, concrete is poured into the column body, a plurality of studs are arranged on the outer surface of the column body in the area covered by the encased foundation column, and one end of each stud protruding out of the outer surface of the column body is embedded into the encased foundation column.
3. The semi-encased semi-embedded steel column base structure of claim 2, wherein the plurality of studs are divided into a plurality of groups from top to bottom, the distance between two adjacent groups is less than or equal to 200mm, and each group comprises 4 to 20 studs arranged at intervals along the circumferential direction of the column body.
4. The semi-externally-wrapped and semi-embedded steel column foot structure according to claim 2, wherein a connecting member is fixedly arranged on the bottom surface of the pit, the connecting member comprises an embedded plate, a plurality of anchor bars and a plurality of screw rods penetrating through the embedded plate, each anchor bar is arranged below the embedded plate and perpendicular to the embedded plate, the upper end of each anchor bar is fixedly connected with the embedded plate, each anchor bar and the embedded plate are embedded in the raft foundation, the upper surface of the embedded plate is flush with the bottom surface of the pit, the lower end of each screw rod penetrates through the embedded plate and is embedded in the raft foundation, the upper end of each screw rod extends upwards to protrude out of the bottom surface of the pit, and the upper end of each screw rod penetrates through the bottom plate in the state that the column foot of the steel structure column is fixed in the pit, and the bottom plate is fixedly connected with the embedded plate.
5. The semi-externally-wrapped and semi-embedded steel column base structure according to any one of claims 1 to 4, wherein the externally-wrapped foundation column is a reinforced concrete structure cast and wrapped on the outer peripheral surface of the column base of the steel structure column, and the raft foundation is a raft foundation formed by casting reinforced concrete.
6. A construction method of a half-encased half-embedded steel column base structure, which is characterized by being capable of being used for building the half-encased half-embedded steel column base structure according to any one of claims 1 to 5, and comprising the following steps:
constructing a raft foundation, and presetting a pit on the upper surface of the raft foundation;
building a steel structure column, and fixing the lower end of the steel structure column in the pit;
and constructing and forming an outer wrapping foundation column on the outer surface of the column base of the steel structure column.
7. The construction method of the semi-encased and semi-embedded steel column foot structure according to claim 6, wherein the constructing of the raft foundation with the pre-pit formed in the upper surface of the raft foundation comprises:
strapping and laying raft reinforcing steel bars, outer-wrapped foundation reinforcing steel bars, connecting members and pit molds, enabling the upper surfaces of the pre-embedded plates of the connecting members to be in contact with the lower surfaces of the pit molds in a fitting manner, enabling the lower ends of the outer-wrapped foundation reinforcing steel bars to penetrate through the pit molds and extend downwards to the lower sides of the pit molds, pouring concrete, enabling the lower ends of the outer-wrapped foundation reinforcing steel bars, the lower ends of the screw rods of the connecting members, the pre-embedded plates of the connecting members and the anchor bars of the connecting members to be embedded in the concrete, dismantling the pit molds after the concrete is initially set, maintaining the concrete, and completing the construction of the raft foundation.
8. The method of constructing a semi-encased, semi-embedded steel socle structure of claim 7, wherein the step of constructing a steel structural column such that a lower end of the steel structural column is secured in the pit comprises:
placing the column feet of the steel structure column into the pits, enabling the screw rods to penetrate through the bottom plate of the steel structure column, attaching the bottom plate to the embedded plate, and welding and fixing the bottom plate and the embedded plate; according to the preset height of the outer-coated foundation column, a plurality of studs can be arranged on the outer surface of the steel structure column body in the area coated by the outer-coated foundation column in a welding mode, concrete is poured into the steel structure column, and the steel structure column is built.
9. The method of constructing a semi-encased and semi-embedded steel column base structure of claim 8, wherein the step of constructing the encased foundation column on the outer surface of the steel column base comprises:
and arranging an outer packing foundation mold outside the column foot of the steel structure column, pouring concrete between the outer packing foundation mold and the steel structure column, dismantling the outer packing foundation mold after the concrete is initially set, curing the concrete, and finishing the construction of the outer packing foundation column.
10. The construction method of the semi-externally-wrapped and semi-embedded steel column base structure according to claim 8, wherein before the step of arranging an externally-wrapped foundation mold on the outer side of the column base of the steel column, the construction method further comprises the following steps:
arranging raft plate supplement steel bars in the pits, and welding and fixing the raft plate supplement steel bars and the raft plate steel bars.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482109A (en) * | 2022-02-28 | 2022-05-13 | 安徽富煌钢构股份有限公司 | Construction method for pre-buried steel column of raft foundation in complex environment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202937034U (en) * | 2012-11-14 | 2013-05-15 | 河南省电力勘测设计院 | Steel framework for reinforced transformer substation |
| CN103669598A (en) * | 2013-12-30 | 2014-03-26 | 合肥工业大学 | Layer added steel framework column base node on top of multi-layer concrete framework structure and construction method thereof |
| CN105350562A (en) * | 2015-11-18 | 2016-02-24 | 中国航空规划设计研究总院有限公司 | Inserting type column leg with accurate leveling device and construction method of inserting type column leg |
| CN106245670A (en) * | 2016-08-22 | 2016-12-21 | 广西建工集团第五建筑工程有限责任公司 | Exposed steel column base construction method |
| JP2016216993A (en) * | 2015-05-20 | 2016-12-22 | 大昌合同会社 | Encasing steel frame for steel column |
| CN206090867U (en) * | 2016-09-19 | 2017-04-12 | 广州容柏生建筑结构设计事务所 | Steel construction wall column base quick connect structure |
| CN109667336A (en) * | 2019-02-28 | 2019-04-23 | 沈阳建筑大学 | A kind of assembled Self-resetting frame system connected using FRP pipe |
| CN211368763U (en) * | 2019-11-29 | 2020-08-28 | 中冶京诚工程技术有限公司 | Half-outer-wrapping half-embedded steel column base structure |
-
2019
- 2019-11-29 CN CN201911197481.9A patent/CN110835929A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202937034U (en) * | 2012-11-14 | 2013-05-15 | 河南省电力勘测设计院 | Steel framework for reinforced transformer substation |
| CN103669598A (en) * | 2013-12-30 | 2014-03-26 | 合肥工业大学 | Layer added steel framework column base node on top of multi-layer concrete framework structure and construction method thereof |
| JP2016216993A (en) * | 2015-05-20 | 2016-12-22 | 大昌合同会社 | Encasing steel frame for steel column |
| CN105350562A (en) * | 2015-11-18 | 2016-02-24 | 中国航空规划设计研究总院有限公司 | Inserting type column leg with accurate leveling device and construction method of inserting type column leg |
| CN106245670A (en) * | 2016-08-22 | 2016-12-21 | 广西建工集团第五建筑工程有限责任公司 | Exposed steel column base construction method |
| CN206090867U (en) * | 2016-09-19 | 2017-04-12 | 广州容柏生建筑结构设计事务所 | Steel construction wall column base quick connect structure |
| CN109667336A (en) * | 2019-02-28 | 2019-04-23 | 沈阳建筑大学 | A kind of assembled Self-resetting frame system connected using FRP pipe |
| CN211368763U (en) * | 2019-11-29 | 2020-08-28 | 中冶京诚工程技术有限公司 | Half-outer-wrapping half-embedded steel column base structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482109A (en) * | 2022-02-28 | 2022-05-13 | 安徽富煌钢构股份有限公司 | Construction method for pre-buried steel column of raft foundation in complex environment |
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