CN116427622A - Semi-buried type steel pipe concrete column foot structure of underground garage and construction method thereof - Google Patents
Semi-buried type steel pipe concrete column foot structure of underground garage and construction method thereof Download PDFInfo
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- CN116427622A CN116427622A CN202310392285.7A CN202310392285A CN116427622A CN 116427622 A CN116427622 A CN 116427622A CN 202310392285 A CN202310392285 A CN 202310392285A CN 116427622 A CN116427622 A CN 116427622A
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- column foot
- concrete
- bottom plate
- steel pipe
- underground garage
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 121
- 239000010959 steel Substances 0.000 title claims abstract description 121
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 32
- 238000005266 casting Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract 2
- 238000004873 anchoring Methods 0.000 claims description 34
- 230000000670 limiting effect Effects 0.000 claims description 23
- 239000002344 surface layer Substances 0.000 claims description 19
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 10
- 229910000746 Structural steel Inorganic materials 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 4
- OFCNXPDARWKPPY-UHFFFAOYSA-N allopurinol Chemical compound OC1=NC=NC2=C1C=NN2 OFCNXPDARWKPPY-UHFFFAOYSA-N 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 description 7
- 230000008093 supporting effect Effects 0.000 description 6
- 238000012946 outsourcing Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000009933 burial Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The application discloses underground garage semi-buried type steel pipe concrete column foot structure and construction method thereof relates to concrete construction technical field, and it includes fixedly connected with in the connecting plate of steel pipe bottom, fixedly connected with a plurality of stiffening rib on the connecting plate, every the equal fixedly connected with of stiffening rib in the steel pipe, connecting plate and a plurality of stiffening rib all buries in the bottom plate concrete, reserve the confession on the steel pipe the through-hole that the surface course reinforcing bar of bottom plate passed, install a plurality of anchor bars on the connecting plate, the foundation at bottom plate place has been seted up and has been used for burying the column foot foundation ditch of anchor bar, column foot foundation ditch with the bottom plate passes through concrete one-time casting shaping. The application has the effects of reducing the influence of the stiffening ribs on the usable space of the underground garage and meeting the stability requirement of burying the steel column feet.
Description
Technical Field
The application relates to the technical field of concrete construction, in particular to a semi-buried steel tube concrete column foot structure of an underground garage and a construction method thereof.
Background
With rapid development of building industrialization, a combined structure of a steel structure and concrete filled steel tube (concrete is filled in the steel tube) is widely used in engineering. The steel structure column foot is a key connecting part of the upper structure and the foundation, and transmits the load of the upper structure to the foundation. The types of steel column feet commonly used are exposed type, outsourced type, embedded type and the like.
The steel column feet that set up in underground garage to exposing and outsourcing steel column feet, through setting up stiffening rib and outsourcing concrete in steel column bottom respectively, with basic connection, but because stiffening rib and outsourcing concrete all are located the top of underground garage bottom plate concrete, consequently, stiffening rib and outsourcing concrete have all taken up a part of underground garage space, just also reduced underground garage's usable space.
For the embedded steel column foot, although the steel column foot is embedded in the foundation, the usable space of the underground garage is not occupied, but the embedded depth of the steel column foot has higher requirements, a deeper steel column foot foundation pit needs to be excavated, more concrete needs to be backfilled, and therefore, the construction cost of the single embedded steel column foot is higher.
In view of the foregoing, the inventor believes that there is a need to provide a concrete filled steel tubular column foot structure for an underground garage, which does not affect the usable space of the underground garage and satisfies the burying stability of the steel column foot.
Disclosure of Invention
In order to reduce the influence of stiffening ribs on usable space of an underground garage and meet the stability requirement of burying a steel column foot, on the one hand, the application provides a semi-buried steel tube concrete column foot structure of the underground garage.
The application provides a semi-buried steel core concrete column foot structure of underground garage adopts following technical scheme:
the utility model provides a semi-buried steel core concrete column foot structure of underground garage, includes fixed connection in the connecting plate of steel pipe bottom, fixedly connected with a plurality of stiffening rib on the connecting plate, every equal fixed connection of stiffening rib in the steel pipe, connecting plate and a plurality of the stiffening rib is all buried underground in the bottom plate concrete, reserve the confession on the steel pipe the through-hole that the surface course reinforcing bar of bottom plate passed, install a plurality of anchor muscle on the connecting plate, the foundation at bottom plate place has been seted up and has been used for burying the column foot foundation ditch of anchor muscle, column foot foundation ditch with the bottom plate passes through concrete one shot forming.
Through the technical scheme, as the stiffening ribs and the connecting plates on the steel pipes are buried in the bottom plate concrete, the influence of the stiffening ribs and the connecting plates on the usable space of the underground garage is reduced.
In addition, the surface layer reinforcing steel bars pass through the through holes in the steel pipes, so that the stability of the steel pipes is improved; the excavation depth of the column foot foundation pit and the anchoring length of the anchoring ribs are smaller than the original fixed burial depth of the steel column foot, so that the construction cost of a single steel column foot is reduced; under the anchoring effect of the anchoring ribs, the stability of the steel pipe is further improved, and the column foot foundation pit concrete and the bottom plate concrete are molded by one-step casting, so that the integrity of the bottom plate concrete, the column foot foundation pit concrete and the steel pipe is improved. The defect of insufficient burying depth of the steel column foot is overcome by the stabilizing effect of the reinforcing steel bars on the bottom plate surface layer on the steel pipe and the stabilizing effect of the anchoring steel bars on the steel pipe.
In summary, according to the semi-embedded steel tube concrete column foot structure of the underground garage, on one hand, the influence of stiffening ribs and connecting plates on usable space of the underground garage is reduced, on the other hand, the construction cost of a single steel column foot is reduced, and on the other hand, the stability requirement of embedding the steel column foot is met.
The present application may be further configured in a preferred example to: the anchor rib is provided with an anchor part, the anchor part is positioned in the column foot foundation pit, a connecting component is arranged between the anchor rib and the connecting plate, and the anchor rib is connected with the connecting plate through the connecting component.
Through the technical scheme, under the anchoring action of the anchoring part, the burying stability of the connecting plate and the steel pipe is improved.
The present application may be further configured in a preferred example to: the connecting assembly comprises a first nut and a first gasket, the first anchor rib is in threaded connection with the first nut, the first gasket is slidably mounted on the anchor rib, and the first gasket is located between the connecting plate and the first nut.
Through the technical scheme, under the limiting effect of the first nut, the possibility that the anchoring rib is separated from the connecting plate in the concrete pouring process is reduced.
The present application may be further configured in a preferred example to: the column foot foundation pit is internally provided with structural steel bars, the structural steel bars comprise stirrups and reinforcing ribs, the stirrups are distributed along the depth direction of the column foot foundation pit, and the reinforcing ribs are distributed along the length direction and the width direction of the column foot foundation pit.
Through the technical scheme, as the stirrups and the anchoring ribs are arranged in the column foot foundation pit, the deformation resistance of the concrete structure of the column foot foundation pit is enhanced.
The present application may be further configured in a preferred example to: the reinforcing rib is provided with a bending part, and the bending part is buried in the bottom plate concrete.
Through the technical scheme, as the bending part of the reinforcing rib is buried in the bottom plate concrete, the integrity of the column foot foundation pit concrete and the bottom plate concrete is enhanced.
The present application may be further configured in a preferred example to: each through hole is provided with a patch, each patch is slidably mounted on a surface layer steel bar of the bottom plate, two nuts II are connected to the surface layer steel bar of the bottom plate in a threaded mode, the steel pipe is located between the two nuts II, and the nuts II are abutted to the corresponding patches.
Through the technical scheme, after operating personnel penetrate the surface course reinforcing bar of bottom plate in the through-hole of steel pipe, slip paster for the paster laminating is in the outer wall of steel pipe, and rethread nut two makes nut two support tight paster, and the paster supports tightly in the outer wall of steel pipe, on the one hand, has reduced the gliding possibility of bottom plate surface course reinforcing bar in the through-hole, thereby has promoted the stable effect of surface course reinforcing bar to the steel pipe, on the other hand, because nut two supports tightly in the steel pipe outer wall through the paster, has equivalent to increasing the area of force of nut two to the steel pipe, just also reduced the impaired possibility of steel pipe outer wall.
The present application may be further configured in a preferred example to: the surface course reinforcing bar of bottom plate is gone up slidable mounting has the wedge, the wedge is located between paster and corresponding the second nut, be provided with binding face one and binding face two on the wedge, binding face one laminate in the outer wall of paster, the second nut laminate in binding face two, the second nut passes through the wedge butt in the paster.
Through above-mentioned technical scheme, because the nut is two to support tightly in the steel pipe outer wall through wedge and paster, and the second laminating of nut is in faying face two, consequently can keep the atress axis and the length direction unanimity of bottom plate surface course reinforcing bar, just also reduced the possibility that bottom plate surface course reinforcing bar takes place to buckle and warp.
The present application may be further configured in a preferred example to: the column foot foundation pit is internally provided with a jig, the jig comprises a bearing frame and a support column fixedly connected to the bearing frame, the connecting plate is arranged on the bearing frame, and the support column is buried in the column foot foundation pit.
Through the technical scheme, under the supporting action of the jig frame, the state of the stiffening ribs and the connecting plates, which are positioned in the concrete range of the bottom plate, can be kept, so that an operator does not need to lift the steel pipe for a long time through lifting equipment, and the equipment cost investment in the concrete pouring process is reduced.
The present application may be further configured in a preferred example to: the lower part of connecting plate is provided with the limiting plate, the limiting plate buries in the column foot foundation ditch, every anchor muscle all install in on the limiting plate, slidable mounting has the gasket two on the anchor muscle, threaded connection has the nut three on the anchor muscle, the gasket two is located the limiting plate with between the nut three.
Through the technical scheme, as the lower part of the anchoring rib is arranged on the limiting plate, under the limiting effect of the limiting plate on the anchoring rib, the possibility of shaking the anchoring rib caused by the impact of concrete on the anchoring rib is reduced.
On the other hand, the application provides a construction method of a semi-embedded type steel tube concrete column foot structure of an underground garage, which adopts the following technical scheme.
A construction method of a semi-embedded type steel tube concrete column foot structure of an underground garage comprises the following steps:
s1, fixedly connecting the stiffening ribs and the connecting plates to the steel pipes;
s2, mounting the limiting plate on the anchoring rib, and mounting the anchoring rib on the connecting plate;
s3, excavating the column foot foundation pit on the basis of the bottom plate, and installing the structural steel bars and the jig frame in the column foot foundation pit;
s4, hoisting the steel pipe to the position of the column foot foundation pit so that the connecting plate is arranged on the bearing frame;
s5, penetrating the surface layer reinforcing steel bars of the bottom plate into the through holes, and screwing the second nut so that the second nut is attached to the second attaching surface;
s6, pouring the concrete of the column foot foundation pit and the concrete of the bottom plate, so that the concrete of the column foot foundation pit and the concrete of the bottom plate are formed by one-step pouring.
In summary, the present application includes the following beneficial technical effects:
1. the stiffening ribs and the connecting plates are buried in the bottom plate concrete of the underground garage, so that the influence of the stiffening ribs and the connecting plates on the usable space of the underground garage is reduced;
2. because the excavation depth of the column foot foundation pit is smaller than the original fixed burial depth of the steel column foot, the construction cost of a single steel column foot is reduced;
3. under the stabilizing effect of the reinforcing steel bars on the bottom plate surface layer and the stabilizing effect of the anchoring steel bars on the steel pipes, the defect of insufficient burying depth of the steel column feet is overcome.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application, mainly illustrating the construction of steel pipes, underground garage floors, and foundations.
Fig. 2 is a schematic cross-sectional view taken along A-A in fig. 1, mainly illustrating the construction of the deck rebar, toe foundation pit, and structural rebar.
Fig. 3 is a partial structural schematic diagram of an embodiment of the present application, mainly illustrating the construction of the limiting plate and the anchor rib.
Fig. 4 is an enlarged schematic view of the portion B of fig. 3, mainly illustrating the configuration of the through holes, the patches, and the wedge blocks.
Fig. 5 is a schematic view of an exploded structure of the embodiment of the present application, mainly illustrating the construction of a jig frame.
Reference numerals illustrate:
1. a steel pipe; 101. a through hole; 11. a connecting plate; 12. stiffening ribs; 2. a bottom plate; 21. surface layer reinforcing steel bars; 211. a patch; 212. a second nut; 22. a foundation; 221. a column foot foundation pit; 3. an anchoring rib; 301. a second gasket; 302. a third nut; 31. an anchor portion; 4. a connection assembly; 41. a first nut; 42. a first gasket; 5. structural steel bars; 51. stirrups; 52. reinforcing ribs; 521. a bending part; 6. wedge blocks; 61. a first joint surface; 62. a second joint surface; 7. a jig frame; 71. a receiving frame; 72. a support column; 8. and a limiting plate.
Detailed Description
The present application is described in further detail below in conjunction with fig. 1-5.
The embodiment of the application discloses an underground garage semi-buried type steel pipe concrete column foot structure.
Referring to fig. 1, a semi-embedded steel tube concrete column foot structure of an underground garage is shown, wherein the bottom of a steel tube 1 in the structure is embedded in bottom plate 2 concrete of the underground garage, and the bottom plate 2 concrete is poured on a foundation 22 of the underground garage.
Referring to fig. 2 and 3, an underground garage semi-embedded steel pipe concrete column foot structure comprises a connecting plate 11 made of steel plates, wherein the cross section of the connecting plate 11 is square, the connecting plate 11 is welded and fixed at the bottom of a steel pipe 1, and the steel pipe 1 is positioned at the center of the connecting plate 11. The top surface welded fastening of connecting plate 11 has eight stiffening ribs 12 that the steel sheet was made, and eight stiffening ribs 12 all fixed connection is in the outer wall of steel pipe 1, and eight stiffening ribs 12 evenly distributed along the circumference of steel pipe 1. The connecting plates 11 and the eight stiffening ribs 12 are buried in the concrete of the bottom plate 2, so that the influence of the stiffening ribs 12 and the connecting plates 11 on the usable space of the underground garage is reduced.
Referring to fig. 3 and 4, through holes 101 through which the surface layer reinforcing bars 21 of the bottom plate 2 pass are reserved in the steel pipe 1, each through hole 101 is provided with a patch 211, the patches 211 are slidably mounted on the surface layer reinforcing bars 21 of the bottom plate 2 along the length direction of the surface layer reinforcing bars 21 of the bottom plate 2, two nuts 212 are in threaded connection with the surface layer reinforcing bars 21 of each bottom plate 2, and the steel pipe 1 is located between the two nuts 212. An operator rotates the second nut 212 to enable the second nut 212 to abut against the sheet 211, the adhesive sheet 211 abuts against the outer wall of the steel pipe 1, the possibility that the surface layer reinforcing steel bar 21 of the bottom plate 2 slides in the through hole 101 is reduced, the stabilizing effect of the surface layer reinforcing steel bar 21 on the steel pipe 1 is improved, the stress area of the second nut 212 on the steel pipe 1 is increased, and the possibility that the outer wall of the steel pipe 1 is damaged is reduced.
Referring to fig. 3 and 4, two wedge blocks 6 are slidably mounted on each surface layer steel bar 21 of the bottom plate 2, the wedge blocks 6, the second nuts 212 and the patches 211 are all buried in the concrete of the bottom plate 2, the two wedge blocks 6 and the second nuts 212 are arranged in one-to-one correspondence, and the wedge blocks 6 are located between the corresponding second nuts 212 and the patches 211. Be provided with binding face one 61 and binding face two 62 on the wedge 6, binding face one 61 is laminated in the outer wall of paster 211, and nut two 212 is laminated in binding face two 62, and nut two 212 butt in paster 211 through wedge 6 can keep the atress axis and the length direction unanimous of bottom plate 2 surface course reinforcing bar 21 like this, just also reduced the possibility that bottom plate 2 surface course reinforcing bar 21 takes place bending deformation.
Referring to fig. 3, eight anchor bars 3 are installed on the connection plate 11, the eight anchor bars 3 penetrate through the connection plate 11 and are uniformly distributed along the circumferential direction of the steel pipe 1, the eight anchor bars 3 and the eight stiffening ribs 12 are arranged in a staggered manner, a connection assembly 4 is arranged between each anchor bar 3 and the connection plate 11, and the anchor bars 3 and the connection plate 11 are connected through the connection assembly 4.
Referring to fig. 3, the connection assembly 4 includes a first nut 41 and a first washer 42, the first anchor bar 3 is screw-coupled to the first nut 41, the first washer 42 is slidably mounted on the first anchor bar 3 in a vertical direction, and the first washer 42 is disposed between the connection plate 11 and the first nut 41. The limiting plate 8 made of steel plates is horizontally arranged below the connecting plate 11, each anchoring rib 3 is arranged on the limiting plate 8 in a penetrating mode, a second gasket 301 is slidably arranged on each anchoring rib 3 along the vertical direction, a third nut 302 is connected to the anchoring rib 3 in a threaded mode, the second gasket 301 is located between the limiting plate 8 and the third nut 302, and the possibility that the anchoring ribs 3 shake due to the fact that concrete impacts the anchoring ribs 3 is reduced under the limiting effect of the limiting plate 8 and the third nut 302 on the anchoring ribs 3.
Referring to fig. 2, a foundation 22 where the base plate 2 is located is provided with a column base foundation pit 221 for embedding the anchor bars 3, the limiting plate 8 is also embedded in the column base foundation pit 221, and the column base foundation pit 221 and the base plate 2 are formed by casting concrete once. The excavation depth of the column foot foundation pit 221 and the anchoring length of the anchoring ribs 3 are smaller than the original fixed burial depth of the steel column foot, so that the construction cost of a single steel column foot is reduced.
Referring to fig. 2, the structural steel bars 5 are arranged in the column foot foundation pit 221, the structural steel bars 5 comprise stirrups 51 and reinforcing ribs 52, the stirrups 51 and the reinforcing ribs 52 are bound and fixed with each other, the stirrups 51 are distributed along the depth direction of the column foot foundation pit 221, the reinforcing ribs 52 are distributed along the length direction and the width direction of the column foot foundation pit 221, and the deformation resistance of the concrete structure of the column foot foundation pit 221 is enhanced. The bending parts 521 are arranged on the reinforcing ribs 52, the vertical parts of the bending parts 521 and the reinforcing ribs 52 are mutually perpendicular, the whole reinforcing ribs 52 are in an inverted shape like a Chinese character 'ji', the bending parts 521 are buried in the concrete of the bottom plate 2, and the integrity of the concrete of the column foundation pit 221 and the concrete of the bottom plate 2 is enhanced.
Referring to fig. 2 and 3, the anchor rib 3 is provided with an anchor portion 31, the anchor portion 31 and the main body of the anchor rib 3 are perpendicular to each other, the whole anchor rib 3 is L-shaped, the anchor portion 31 is embedded in the concrete of the column foundation pit 221, the anchor portion 31 and the reinforcing rib 52 are bound and fixed to each other, and under the anchoring action of the anchor portion 31, the embedded stability of the connecting plate 11 and the steel pipe 1 is improved.
The defect of insufficient burying depth of the steel column foot is overcome by the stabilizing effect of the reinforcing steel bar 21 on the surface layer of the bottom plate 2 on the steel pipe 1 and the stabilizing effect of the anchoring steel bar 3 on the steel pipe 1. That is to say, the concrete column foot structure of the semi-embedded steel tube 1 of the underground garage reduces the influence of the stiffening ribs 12 and the connecting plates 11 on the usable space of the underground garage on one hand, reduces the construction cost of a single steel column foot on the other hand, and meets the requirement of the embedded stability of the steel column foot.
Referring to fig. 2 and 5, a jig frame 7 is disposed in a column foot foundation pit 221, the jig frame 7 includes a receiving frame 71 and four supporting columns 72, the receiving frame 71 and the supporting columns 72 are made of angle steel, the four supporting columns 72 are welded and fixed at the bottom of the receiving frame 71, the bottom of the supporting columns 72 is supported on the bottom wall of the column foot foundation pit 221, and a connecting plate 11 is erected on the receiving frame 71. Under the supporting action of the jig frame 7, operators are not required to lift the steel pipe 1 for a long time through lifting equipment, and the equipment cost investment in the concrete pouring process is reduced.
The embodiment of the application discloses a construction method of a semi-embedded type steel tube concrete column foot structure of an underground garage, which comprises the following steps:
s1, welding and fixing stiffening ribs 12 and connecting plates 11 on a steel pipe 1;
s2, mounting the limiting plate 8 on the anchoring rib 3, and mounting the anchoring rib 3 on the connecting plate 11;
s3, excavating a column foot foundation pit 221 on the foundation 22 of the bottom plate 2, and installing structural steel bars 5 and a jig frame 7 in the column foot foundation pit 221;
s4, hoisting the steel pipe 1 to the position of the column foot foundation pit 221 so that the connecting plate 11 is erected on the bearing frame 71;
s5, penetrating the surface layer reinforcing steel bars 21 of the bottom plate 2 into the through holes 101, and screwing the second nuts 212 so that the second nuts 212 are attached to the second attaching surface 62;
s6, pouring the concrete of the column foundation pit 221 and the concrete of the bottom plate 2, so that the concrete of the column foundation pit 221 and the concrete of the bottom plate 2 are formed by one-step pouring.
The embodiments of the present embodiment are all preferred embodiments of the present application, and do not sequentially limit the protection scope of the present application, so: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The utility model provides an underground garage semi-buried formula steel core concrete column foot structure which characterized in that: including fixed connection in connecting plate (11) of steel pipe (1) bottom, fixedly connected with a plurality of stiffening rib (12) on connecting plate (11), every stiffening rib (12) all fixed connection in steel pipe (1), connecting plate (11) and a plurality of stiffening rib (12) all bury in bottom plate (2) concrete, reserve on steel pipe (1) and supply surface course reinforcing bar (21) of bottom plate (2) pass through hole (101), install a plurality of anchor muscle (3) on connecting plate (11), foundation (22) at bottom plate (2) place are offered and are used for burying column foot foundation ditch (221) of anchor muscle (3), column foot foundation ditch (221) with bottom plate (2) are through concrete one-time casting shaping.
2. An underground garage semi-buried concrete filled steel tubular column foot structure according to claim 1, wherein: be provided with anchor portion (31) on anchor muscle (3), anchor portion (31) are located in column foot foundation ditch (221), anchor muscle (3) with be provided with coupling assembling (4) between connecting plate (11), anchor muscle (3) with connecting plate (11) are passed through coupling assembling (4) are connected.
3. An underground garage semi-buried concrete filled steel tubular column foot structure according to claim 2, wherein: the connecting assembly (4) comprises a first nut (41) and a first gasket (42), the first anchor rib (3) is in threaded connection with the first nut (41), the first gasket (42) is slidably mounted on the first anchor rib (3), and the first gasket (42) is located between the connecting plate (11) and the first nut (41).
4. A semi-buried concrete filled steel tubular column foot structure for an underground garage according to claim 3, wherein: be provided with structure reinforcing bar (5) in toe foundation ditch (221), structure reinforcing bar (5) include stirrup (51) and reinforcement rib (52), stirrup (51) are along the degree of depth direction distribution of toe foundation ditch (221), reinforcement rib (52) are along the length direction, the width direction distribution of toe foundation ditch (221).
5. The underground garage semi-buried concrete filled steel tubular column foot structure of claim 4, wherein: the reinforcing rib (52) is provided with a bending part (521), and the bending part (521) is buried in the concrete of the bottom plate (2).
6. An underground garage semi-buried concrete filled steel tubular column foot structure according to claim 1, wherein: each through hole (101) is provided with a patch (211), each patch (211) is slidably mounted on a surface layer steel bar (21) of each bottom plate (2), two nuts two (212) are connected to each surface layer steel bar (21) of each bottom plate (2) in a threaded mode, each steel pipe (1) is located between two nuts two (212), and each nut two (212) is abutted to the corresponding patch (211).
7. The underground garage semi-buried concrete filled steel tubular column foot structure of claim 6, wherein: the utility model discloses a concrete placement machine, including surface course reinforcing bar (21) of bottom plate (2), slidable mounting has wedge (6) on surface course reinforcing bar (21) of bottom plate (2), wedge (6) are located paster (211) and corresponding between second nut (212), be provided with binding face one (61) and binding face two (62) on wedge (6), binding face one (61) laminate in the outer wall of paster (211), second nut (212) laminate in binding face two (62), second nut (212) pass through wedge (6) butt in paster (211).
8. An underground garage semi-buried concrete filled steel tubular column foot structure according to claim 1, wherein: be provided with bed-jig (7) in column foot foundation ditch (221), bed-jig (7) including accept frame (71) and fixed connection in support column (72) on accepting frame (71), connecting plate (11) set up in accept on frame (71), support column (72) bury in column foot foundation ditch (221).
9. An underground garage semi-buried concrete filled steel tubular column foot structure according to claim 1, wherein: limiting plates (8) are arranged below the connecting plates (11), the limiting plates (8) are buried in the column foot foundation pits (221), each anchoring rib (3) is installed on the limiting plate (8), a second gasket (301) is installed on each anchoring rib (3) in a sliding mode, a third nut (302) is connected to each anchoring rib (3) in a threaded mode, and the second gasket (301) is located between the limiting plates (8) and the third nut (302).
10. A construction method of an underground garage semi-embedded steel pipe concrete column foot structure, based on the underground garage semi-embedded steel pipe concrete column foot structure as set forth in any one of claims 1-9, characterized in that: comprises the following steps of;
s1, fixedly connecting the stiffening ribs (12) and the connecting plates (11) to the steel pipe (1);
s2, mounting the limiting plate (8) on the anchoring rib (3), and mounting the anchoring rib (3) on the connecting plate (11);
s3, excavating the column foot foundation pit (221) on the foundation (22) of the bottom plate (2), and installing the structural steel bars (5) and the jig frame (7) in the column foot foundation pit (221);
s4, hoisting the steel pipe (1) to the position of the column foot foundation pit (221) so that the connecting plate (11) is erected on the bearing frame (71);
s5, penetrating the surface layer reinforcing steel bars (21) of the bottom plate (2) into the through holes (101), and screwing the second nut (212) so that the second nut (212) is attached to the second attaching surface (62);
s6, pouring the concrete of the column foot foundation pit (221) and the concrete of the bottom plate (2) to form the concrete of the column foot foundation pit (221) and the concrete of the bottom plate (2) through one-step pouring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310392285.7A CN116427622A (en) | 2023-04-10 | 2023-04-10 | Semi-buried type steel pipe concrete column foot structure of underground garage and construction method thereof |
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| CN202310392285.7A CN116427622A (en) | 2023-04-10 | 2023-04-10 | Semi-buried type steel pipe concrete column foot structure of underground garage and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117052045A (en) * | 2023-08-15 | 2023-11-14 | 北京市市政工程设计研究总院有限公司 | Semi-embedded end-bearing column foot of steel tube concrete column and steel tube and column foot construction method thereof |
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- 2023-04-10 CN CN202310392285.7A patent/CN116427622A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117052045A (en) * | 2023-08-15 | 2023-11-14 | 北京市市政工程设计研究总院有限公司 | Semi-embedded end-bearing column foot of steel tube concrete column and steel tube and column foot construction method thereof |
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