CN116480184B - Tree-shaped supporting system at main entrance of steel structure and construction method thereof - Google Patents
Tree-shaped supporting system at main entrance of steel structure and construction method thereofInfo
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- CN116480184B CN116480184B CN202310267367.9A CN202310267367A CN116480184B CN 116480184 B CN116480184 B CN 116480184B CN 202310267367 A CN202310267367 A CN 202310267367A CN 116480184 B CN116480184 B CN 116480184B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/02—Shores or struts; Chocks non-telescopic
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional [3D] framework structures
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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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
-
- 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
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
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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
- E04C3/32—Columns; Pillars; Struts of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/122—Machines for joining reinforcing bars
- E04G21/123—Wire twisting tools
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明公开了一种钢结构主入口处树状支撑体系及其施工方法，包括主柱、斜柱、分叉柱和支撑架，所述主柱底端固定安装在混凝土垫层上，主柱顶部通过所述斜柱与所述分叉柱底端固定连接，所述分叉柱顶端固定支撑在设置于钢结构顶部的转换桁架底部一角，所述支撑架固定支撑在所述主柱周边，支撑架底部安装在所述混凝土垫层顶部；主柱从下到上依次包括第一小主柱、第二小主柱和第三小主柱，所述第一小主柱底端通过锚栓组件固定安装在混凝土垫层上，施工方法是按照从下至上的顺序依次安装锚固组件、主柱、分叉柱和转换横梁。该支撑体系顶大底小、底部占用空间小，但安装固定牢靠，且施工方法严谨合理，可有效缩短施工周期。
The present invention discloses a tree-like support system for a main entrance of a steel structure and a construction method thereof, comprising a main column, an inclined column, a bifurcated column, and a support frame. The bottom end of the main column is fixedly mounted on a concrete cushion layer, the top end of the main column is fixedly connected to the bottom end of the bifurcated column via the inclined column, the top end of the bifurcated column is fixedly supported on a bottom corner of a conversion truss arranged on the top of the steel structure, the support frame is fixedly supported around the main column, and the bottom end of the support frame is mounted on the top of the concrete cushion layer. The main column comprises, from bottom to top, a first small main column, a second small main column, and a third small main column. The bottom end of the first small main column is fixedly mounted on the concrete cushion layer via an anchor assembly. The construction method is to sequentially install the anchor assembly, the main column, the bifurcated column, and the conversion beam in order from bottom to top. The support system has a large top and a small bottom, and occupies little space at the bottom, but is securely installed and fixed, and the construction method is rigorous and reasonable, which can effectively shorten the construction period.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a tree-shaped supporting system at a main entrance of a steel structure and a construction method thereof.
Background
With the development of society and the progress of age, there is an increasing demand for comprehensive commercial financial buildings integrating office and business, and the buildings with the property need not only to be reasonably distributed in space utilization, but also to be unique in shape to attract flow. The building with the basement steel reinforced concrete structure and the overground steel frame structure is selected to reasonably utilize space, and the integral appearance can be designed on the steel structure modeling or the steel structure supporting system. The tree-shaped structure is a space bionic structure, has the characteristics of reasonable force transmission path, higher bearing capacity, wide supporting coverage range, small occupied space at the bottom and unique shape, and can be used as a support of a main inlet of a steel structure, and the structure is unique and can reasonably support a top steel structure.
The utility model patent with the application number 202120328979.0 discloses an integral crotch post expansion supporting structure based on steel structure extension, which comprises a supporting upright post, the supporting upright post upper end be equipped with the supporting upright post be integrated welded cast steel node, cast steel node on be equipped with a plurality of crotch outriggers that are equidistant annular distribution. The support column comprises a core column, and a plurality of U-shaped columns which are distributed in an equidistant annular mode are arranged on the periphery of the core column. Has the characteristics of simple structure, high strength and good stability. Solves the problems of poor bending moment resistance and horizontal shearing force resistance of the steel column. The moment of inertia of the section is increased, and the bending resistance bearing capacity is improved.
The invention patent with the application number of CN202111189148.0 discloses a support system for mounting a tree column structure, in particular to a support system for mounting a tree column structure, which comprises a main body truss, a sliding device and a fixing device, wherein the main body truss is erected on two tree columns; the tree-shaped column is provided with a sliding device, the main body truss is abutted against the sliding device, the fixing device is arranged on one side of the main body truss, one end of the fixing device is fixed on the main body truss, and the other end of the fixing device is fixed on a crotch rod of the tree-shaped column. The sliding device is placed on the tree columns, the main body truss is hoisted and placed on two adjacent tree columns to slidingly adjust the position of the main body truss, and the main body truss is fixed through the fixing device. The connecting truss sections are hoisted and temporarily placed on the supporting system, workers can operate and construct on the main truss, and the connecting truss is welded to crotch bars of the tree columns. After the connection truss is fixed, the fixing device is loosened, the main truss is slipped to the top of the next tree column, and the installation of the rest connection truss sections is completed in sequence in the mode.
Therefore, the top and bottom of the tree-shaped support system are small, the difficult problem of difficult installation and fixation exists, and the overall construction difficulty is high.
Disclosure of Invention
The invention aims to provide a tree-shaped supporting system at a main entrance of a steel structure and a construction method thereof, and the supporting system solves the problem that the existing tree-shaped supporting system is difficult to install and fix.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The main column is fixedly arranged on a concrete cushion layer through the anchor bolt assembly, the top end of the main column is fixedly connected with the bottom end of the bifurcation column through the slant column, the top end of the bifurcation column is fixedly supported at one corner of the bottom of a conversion truss arranged at the top of the steel structure, the support frame is fixedly supported at the periphery of the main column, and the bottom of the support frame is arranged at the top of the concrete cushion layer;
The main column comprises a first small main column, a second small main column and a third small main column from bottom to top in sequence, wherein the bottom end of the first small main column is fixedly connected with an anchor bolt assembly pre-buried in a concrete cushion layer, the first small main column is supported by the support ring beam between the first small main column and the concrete cushion layer, the second small main column is supported by the support ring beam between the second small main column and the support ring beam, the third small main column is supported by the support frame between the third small main column and the concrete cushion layer, and the first small main column bottom, the support ring beam, the plurality of diagonal braces and the support frame bottom are integrally cast in a bearing platform foundation.
Preferably, the main column, the inclined column and the bifurcation column are all made of stainless steel pipes, and cross stiffening plates are arranged in the stainless steel pipes.
The Y-shaped structure is formed among the first bifurcation column, the second bifurcation column and the oblique column, the three second bifurcation columns are respectively a third bifurcation column, a fourth bifurcation column and a fifth bifurcation column, the bottom ends of the third bifurcation column and the fifth bifurcation column are respectively fixedly arranged at the top ends of the second bifurcation columns, and the fourth bifurcation column and the fifth bifurcation column are fixedly arranged at the top ends of the first bifurcation columns through tee-joint columns.
Preferably, the top ends of the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are flush, and the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are connected by a top cross beam.
Preferably, the anchoring assembly comprises two layers of positioning ring plates and a plurality of anchor rods, wherein the positioning ring plates at the bottom layer are arranged in the reinforced bars of the concrete cushion, the positioning ring plates at the top layer are arranged at the tops of the reinforced bars of the concrete cushion, the anchor rods are uniformly and alternately penetrated and fixed on the two layers of positioning ring plates, the two layers of positioning ring plates and the anchor rods are integrally cast in the concrete cushion with the bottoms of the anchor rods and the reinforced bars, and the bottom end of the first small main column is tightly attached to the positioning ring plates at the top layer and fixedly connected with the tops of the anchor rods.
Preferably, the support ring beam is a radial steel structure consisting of six or eight support beams, and one side surface of the support beam is fixedly arranged on the top surface of the concrete cushion.
The support frame comprises a plurality of support rods and two groups of radial steel beam components, wherein the third small main column and the inclined column are connected with the support frame through a group of radial steel beam components, the support rods uniformly surround the periphery of the main column at intervals, the bottoms of the support rods are fixedly arranged on the concrete cushion layer, the radial steel beam components are radial steel structures formed by a plurality of steel beams with one ends fixedly arranged on the outer side wall of the third small main column or the outer side wall of the inclined column and the other ends fixedly connected with the support rods, and the number of the steel beams is consistent with that of the support rods.
Preferably, a floor slab template is built on each of the two groups of radial steel beam assemblies.
Preferably, the conversion truss is a truss structure formed by upward building by depending on three top cross beams.
A construction method of a tree-shaped supporting system at a main entrance of a steel structure comprises the following steps:
Firstly, embedding an anchoring assembly, binding bottom layer steel bars of a concrete cushion layer, fixedly mounting a bottom layer positioning ring plate on the top of the bottom layer steel bars of the concrete cushion layer, binding top layer steel bars of the concrete cushion layer, fixedly mounting a top layer positioning ring plate on the top layer steel bars of the concrete cushion layer, mounting a cross steel frame at the central part of the top layer positioning ring plate, taking the cross steel frame as a mounting positioning datum point, mounting a plurality of anchor rods, removing the cross steel frame after adjusting the heights of the plurality of screw rods, pouring concrete to form the concrete cushion layer, and exposing the top ends of the anchor rods on the top of the concrete cushion layer after pouring;
Installing a first small main column, lifting the first small main column to the embedded position of the anchoring assembly, then moving the first small main column downwards, and fixedly connecting the bottom of the first small main column with the top ends of a plurality of anchor rods exposed out of the top of the concrete cushion;
Step three, installing support ring beams, keeping the hoisting of the first small main column not to loosen, sequentially completing hoisting of a plurality of support beams, sequentially fixedly installing the support beams on a concrete cushion layer to form support ring beams, and separating a lifting hook from the first small main column after the installation of the support ring beams is completed;
installing supporting rods, sequentially lifting the supporting rods, uniformly surrounding and installing the supporting rods around the periphery of the first small main column at intervals, and fixedly installing the bottoms of the supporting rods on the concrete cushion;
Installing a second small main column, lifting the second small main column to the top of the first small main column by using an automobile crane, and fixedly connecting the bottom end of the second small main column with the top end of the first small main column;
step six, installing diagonal braces, and uniformly and fixedly supporting a plurality of diagonal braces between the second small main column and the support beam at intervals;
Pouring a bearing platform foundation, namely pouring concrete at the bottoms of the first small main column, the second small main column, the support ring beam, the plurality of diagonal braces and the bottom of the support frame to form the bearing platform foundation;
installing a third small main column, lifting the third small main column to the top of the second small main column by using an automobile crane, and fixedly connecting the bottom end of the third small main column with the top end of the second small main column;
step nine, installing a bottom radial steel beam assembly, wherein a plurality of steel beams are uniformly and radially fixedly installed on the outer side wall of the third small main column at intervals, and the other ends of the steel beams are fixedly connected with the supporting rods to form the bottom radial steel beam assembly;
Step ten, installing an inclined column, lifting the inclined column to the top of the third small main column, and fixedly connecting the bottom end of the inclined column with the top end of the third small main column;
step eleven, installing a top-layer radial steel beam assembly, uniformly and radially and fixedly installing a plurality of steel beams at intervals on the outer side wall of the inclined column, wherein the other ends of the steel beams are fixedly connected with the supporting rods to form a top-layer radial steel beam assembly, and a supporting frame is formed;
twelve, installing two layers of floor slabs, fixedly connecting two cross beams between two adjacent support rods, wherein the installation positions of the two cross beams correspond to two groups of radial steel beam assemblies, and building the floor slabs on the two groups of radial steel beam assemblies;
step thirteen, constructing a temporary support, and constructing the temporary support at the top of the support frame;
fourteen, installing a first-grade bifurcation column, lifting a first bifurcation column to the top of the diagonal column, and fixedly installing the bottom end of the first bifurcation column at the top end of the diagonal column;
Fifteen, installing a two-stage fork column, lifting a third fork column to the top of the second fork column, and fixedly installing the bottom end of the third fork column at the top of the second fork column;
Sixthly, installing a top cross beam, wherein the top ends of the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are connected by a top cross beam, so as to form a triangular stable structure;
Seventeenth, installing a conversion truss, and upwards building the conversion truss by depending on three top cross beams;
And eighteenth, removing the temporary support, and removing the temporary support built on the top of the support frame.
According to the invention, the main column is divided into three sections of a first small main column, a second small main column and a third small main column, the three sections are sequentially installed in sequence from bottom to top, each section is fixedly supported during installation, the stability of main column installation is improved, the first small main column is fixedly installed at the top of a concrete cushion layer through an anchor bolt assembly, the anchor bolt assembly is pre-buried and installed in the concrete cushion layer, the stability of connection between the first small main column and the concrete cushion layer is improved, the first small main column and the concrete cushion layer are supported through a support ring beam, the support ring beam is radial, the stability of first small main column installation is improved, the second small main column and the support ring beam are supported through a plurality of inclined support rods, the stability of second small main column installation is improved, and the third small main column and the concrete cushion layer are supported through a support frame, so that the stability of third small main column installation is improved.
The pouring of cushion cap basis has realized first little principal post 11, second little principal post 12 bottoms, support ring beam 6, many diagonal bracing, and the pre-buried of support frame bottom has increased the intensity of connection.
The bifurcation column is a double Y-shaped structure consisting of two first-level bifurcation columns and three second-level bifurcation columns, so that the connection node between the bifurcation column and the conversion truss is increased, the support stability is improved, the bifurcation column is supported by a main column, and the occupied space at the bottom is small.
The support frame includes two sets of radial girder steel subassemblies and many spinal branch vaulting poles, and third little principal post and inclined strut all link to each other with many spinal branch vaulting poles through a set of radial girder steel subassemblies, have increased the installation stability of third little principal post and inclined strut.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the anchor assembly of the present invention;
FIG. 3 is a second schematic diagram of the construction step of the present invention;
FIG. 4 is a third schematic view of the construction step of the present invention;
FIG. 5 is a schematic diagram of a construction step four of the present invention;
FIG. 6 is a schematic diagram of a construction step five of the present invention;
FIG. 7 is a sixth schematic illustration of the construction step of the present invention;
FIG. 8 is a seventh schematic illustration of the construction step of the present invention;
FIG. 9 is a schematic diagram of an eighth construction step of the present invention;
FIG. 10 is a schematic diagram of a construction step nine of the present invention;
FIG. 11 is a schematic view of a construction step ten of the present invention;
FIG. 12 is a schematic diagram of an eleventh construction step of the present invention;
FIG. 13 is a schematic diagram of a twelve construction steps of the present invention;
FIG. 14 is a thirteenth schematic view of the construction step of the present invention;
FIG. 15 is a schematic view of fourteen, fifteen and sixteen construction steps of the present invention;
FIG. 16 is a seventeenth schematic view of the construction step of the present invention.
The device comprises a main column, an inclined column, a branch column, an anchor bolt assembly, a concrete cushion layer, a support ring beam, a conversion truss, a bearing platform foundation, a supporting frame, a 10 inclined supporting rod, a first small main column, a second small main column, a 13 third small main column, a 30 first branch column, a 31 second branch column, a 32 third branch column, a 33 top cross beam, a 40 positioning ring plate, a 41 anchor bolt, a 60 support beam, a 90 support rod, a 91 radial steel beam assembly, a 92 cross beam.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
The tree-shaped supporting system at the main entrance of the steel structure shown in fig. 1 comprises a main column 1, an inclined column 2, a bifurcation column 3, an anchor bolt assembly 4, a support ring beam 6, a plurality of diagonal braces 10 and a support frame 9, wherein the main column 1, the inclined column 2 and the bifurcation column 3 are all made of stainless steel pipes, cross stiffening plates are arranged in the stainless steel pipes, and the cross stiffening plates can increase the rigidity and strength of the stainless steel pipes. The main column 1 is fixedly arranged on a concrete cushion 5 through the anchor bolt assembly 4, the top end of the main column 1 is fixedly connected with the bottom end of the bifurcation column 3 through the inclined column 2, the top end of the bifurcation column 3 is fixedly supported at one corner of the bottom of a conversion truss 7 arranged at the top of a steel structure, the support frame 9 is fixedly supported on the periphery of the main column 1, and the bottom of the support frame 9 is arranged at the top of the concrete cushion 5.
The main column 1 sequentially comprises a first small main column 11, a second small main column 12 and a third small main column 13 from bottom to top, wherein the bottom end of the first small main column 11 is fixedly connected with an anchor bolt assembly 4 pre-buried in a concrete cushion layer 5, the first small main column 11 is supported by a support ring beam 6, the second small main column 12 is supported by a plurality of diagonal braces 10 between the support ring beam 6, the third small main column 13 is supported by a support frame 9 between the concrete cushion layer 5, and the bottoms of the first small main column 11, the second small main column 12, the support ring beam 6, the diagonal braces 10 and the bottom of the support frame 9 are integrally poured in a bearing platform foundation 8.
The bifurcation column 3 comprises two first-grade bifurcation columns 30 and three second-grade bifurcation columns 31, wherein the two first-grade bifurcation columns 30 are respectively a first bifurcation column and a second bifurcation column, the bottom end of the first bifurcation column is fixedly arranged at the top end of the diagonal column 2 through welding, the bottom end of the second bifurcation column is fixedly arranged at a notch on the side edge of the diagonal column 2 through welding, and a Y-shaped structure is formed among the first bifurcation column, the second bifurcation column and the diagonal column 2. The three two-stage branch columns 31 are a third branch column, a fourth branch column and a fifth branch column respectively, the bottom end of the third branch column is fixedly arranged at the top end of the second branch column through welding, the fourth branch column and the fifth branch column are fixedly arranged at the top end of the first branch column through a tee column 32 and form a Y-shaped structure, and the tee column 32 is fixedly connected with the first branch column, the fourth branch column is fixedly connected with the tee column 32 and the fifth branch column is fixedly connected with the tee column 32 through welding. The top ends of the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are flush, and are connected by a top cross beam 33 in a welding mode, so that a triangle-shaped stable structure is formed. The conversion truss 7 is a truss structure built up by welding three top beams 33.
As shown in fig. 2, the anchoring assembly 4 comprises two layers of positioning ring plates 40 and a plurality of anchor rods 41, wherein the bottom layer of positioning ring plates 40 are arranged in the reinforced bars of the concrete cushion layer 5, the top layer of positioning ring plates 40 are arranged at the tops of the reinforced bars of the concrete cushion layer 5, the anchor rods 41 are uniformly and alternately penetrated and fixed on the two layers of positioning ring plates 40, the bottoms of the two layers of positioning ring plates 40 and the anchor rods 41 are integrally cast in the concrete cushion layer 5 with the reinforced bars, and the bottom end of the first small main column 11 is tightly attached to the top layer of positioning ring plates 40 and fixedly connected with the top ends of the anchor rods 41.
The support ring beam 6 is a radial steel structure consisting of six or eight support beams 60, one side surface of the support beam 60 is fixedly arranged on the top surface of the concrete cushion layer 5, and the support beam 60 is made of I-shaped steel or channel steel.
The support frame 9 comprises a plurality of support rods 90 and two groups of radial steel beam components 91, the third small main column 13 and the inclined column 2 are connected with the support frame 9 through the group of radial steel beam components 91, the plurality of support rods 90 evenly surround the periphery of the main column 1 at intervals, the bottoms of the support rods 90 are fixedly arranged on the concrete cushion 5, the radial steel beam components 91 are radial steel structures formed by a plurality of steel beams with one ends fixedly arranged on the outer side wall of the third small main column 13 or the outer side wall of the inclined column 2 and the other ends fixedly connected with the support rods 90, and the number of the steel beams is identical with that of the support rods 90. A floor slab formwork is built on both sets of radial steel beam assemblies 91. In this example, the top floor forms are flush with the top of the third small main column 13.
A construction method of a tree-shaped supporting system at a main entrance of a steel structure comprises the following steps:
Firstly, embedding an anchor assembly 4, binding bottom layer steel bars of a concrete cushion layer 5, fixedly installing a bottom layer positioning ring plate 40 on the top of the bottom layer steel bars of the concrete cushion layer 5, binding top layer steel bars of the concrete cushion layer 5, fixedly installing the top layer positioning ring plate 40 on the top layer steel bars of the concrete cushion layer 5, adopting a fastener or welding a temporary mounting cross steel frame at the central part of the top layer positioning ring plate 40, manufacturing the cross steel frame by channel steel, taking the cross steel frame as a mounting positioning reference point, installing a plurality of anchor rods 41, enabling each anchor rod 41 to serve as a checking point of the whole anchor assembly 4 in the mounting process, adjusting the height of each screw rod 41 by adjusting an adjusting nut on the anchor rod 41, removing the cross steel frame after adjusting the heights of the plurality of screw rods, pouring concrete to form the concrete cushion layer 5, and embedding the anchor assembly 4 in the concrete cushion layer 5, wherein the top ends of the anchor rods 41 are exposed at the top of the concrete cushion layer 5 after pouring;
Step two, installing a first small main column 11, as shown in fig. 3, lifting the first small main column 11 to the embedded position of the anchor assembly 4 by using an automobile crane, then moving the first small main column downwards, and fixedly connecting the bottom of the first small main column 11 with the top ends of a plurality of anchor rods exposed at the top of the concrete cushion 5;
Step three, installing the support ring beam 6, as shown in fig. 4, keeping the hoisting of the first small main column 11 not to loosen, sequentially completing the hoisting of a plurality of support beams 60 by adopting a tower crane, sequentially fixedly installing the plurality of support beams 60 on the concrete cushion 5 through anchor bolts to form the support ring beam 6, and separating the lifting hook from the first small main column 11 after the installation of the support ring beam 6 is completed, wherein the plurality of support beams 60 are uniformly and radially arranged on the outer side wall of the first small main column 11 at intervals through welding, and one side surface of the support beam 60 is fixedly installed on the top surface of the concrete cushion 5 through the anchor bolts;
Step four, installing supporting rods 90, as shown in fig. 5, sequentially hoisting a plurality of supporting rods 90 and uniformly surrounding and installing the supporting rods on the periphery of a first small main column 11 at intervals, wherein the bottoms of the supporting rods 90 are fixedly installed on a concrete cushion 5 through anchor bolts;
step five, installing a second small main column 12, as shown in fig. 6, lifting the second small main column 12 to the top of the first small main column 11 by using an automobile crane, and fixedly connecting the bottom end of the second small main column 12 with the top end of the first small main column 11 by welding;
Step six, installing diagonal braces 10, as shown in fig. 7, fixedly supporting a plurality of diagonal braces 10 between the second small main column 12 and the support beam 60 at uniform intervals by welding;
Step seven, pouring a bearing platform foundation 8, wherein as shown in fig. 8, concrete is poured at the bottoms of the first small main column 11, the second small main column 12, the support ring beam 6, the plurality of diagonal braces 10 and the bottom of the support frame 9 to form the bearing platform foundation 8;
step eight, installing a third small main column 13, as shown in fig. 9, lifting the third small main column 13 to the top of the second small main column 12 by using an automobile crane, and fixedly connecting the bottom end of the third small main column 13 with the top end of the second small main column 12 by welding;
Step nine, installing a bottom radial steel beam assembly 91, as shown in fig. 10, fixedly installing a plurality of steel beams on the outer side wall of the third small main column 13 in a radial manner at uniform intervals through welding, and fixedly connecting the other ends of the steel beams with the supporting rods 90 through welding to form the bottom radial steel beam assembly 91;
Step ten, installing the inclined column 2, as shown in fig. 11, lifting the inclined column 2 to the top of the third small main column 13 by using an automobile crane, and fixedly connecting the bottom end of the inclined column 2 with the top end of the third small main column 13 by welding;
step eleven, installing a top-layer radial steel beam assembly 91, as shown in fig. 12, fixedly installing a plurality of steel beams on the outer side wall of the inclined column 2 in a radial manner at uniform intervals through welding, and fixedly connecting the other ends of the steel beams with a supporting rod 90 through welding to form the top-layer radial steel beam assembly 91 to form a supporting frame 9;
Step twelve, installing two layers of floor slabs, as shown in fig. 13, fixedly connecting two cross beams 92 between two adjacent support rods 90 through welding, wherein the installation positions of the two cross beams 92 correspond to two groups of radial steel beam assemblies 91, and building the floor slabs on the two groups of radial steel beam assemblies 91;
Step thirteen, constructing a temporary support, wherein as shown in fig. 14, the temporary support is constructed at the top of the support frame 9;
Fourteen, installing a first-grade bifurcation column 30, as shown in fig. 15, lifting the first bifurcation column to the top of the diagonal column by using an automobile crane, fixedly installing the bottom end of the first bifurcation column at the top end of the diagonal column 2 by welding;
Fifteen, installing a two-stage fork column 31, as shown in fig. 15, lifting a third fork column to the top of the second fork column by using an automobile crane, fixedly installing the bottom end of the third fork column to the top of the second fork column by welding, lifting a three-way column 32 to the top of the first fork column by using the automobile crane, fixedly installing the bottom end of the three-way column 32 to the top of the first fork column by welding, lifting a fourth fork column and a fifth fork column in sequence by using the automobile crane, and installing the fourth fork column and the fifth fork column to the top of the three-way column 32 by welding;
sixthly, installing the top cross beam 33, wherein as shown in fig. 15, the top ends of the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are connected by the top cross beam 33, so as to form a triangle stable structure;
seventeen, installing a conversion truss 7, and constructing the conversion truss 7 upwards in a welding mode by depending on three top crossbeams 33 as shown in FIG. 16;
and eighthly, removing the temporary support, and removing the temporary support built on the top of the support frame 9.
The above embodiments are only a few descriptions of the inventive concept and implementation, and are not limited thereto, and the technical solutions without substantial transformation remain within the scope of protection under the inventive concept.
Claims (9)
1. The tree-shaped supporting system for the main entrance of the steel structure is characterized by comprising a main column (1), an inclined column (2), a bifurcation column (3), an anchor bolt assembly (4), a support ring beam (6), a plurality of inclined stay bars (10) and a supporting frame (9), wherein the main column (1) is fixedly arranged on a concrete cushion layer (5) through the anchor bolt assembly (4), the top end of the main column (1) is fixedly connected with the bottom end of the bifurcation column (3) through the inclined column (2), the top end of the bifurcation column (3) is fixedly supported at one corner of the bottom of a conversion truss (7) arranged at the top of the steel structure, the supporting frame (9) is fixedly supported at the periphery of the main column (1), and the bottom of the supporting frame (9) is arranged at the top of the concrete cushion layer (5);
The main column (1) sequentially comprises a first small main column (11), a second small main column (12) and a third small main column (13) from bottom to top, wherein the bottom end of the first small main column (11) is fixedly connected with an anchor bolt assembly (4) embedded in a concrete cushion layer (5), the first small main column (11) and the concrete cushion layer (5) are supported by a support ring beam (6), the second small main column (12) and the support ring beam (6) are supported by a plurality of diagonal braces (10), the third small main column (13) and the concrete cushion layer (5) are supported by a support frame (9), and the bottoms of the first small main column (11), the second small main column (12) and the support ring beam (6), the diagonal braces (10) and the bottom of the support frame (9) are integrally cast in a bearing platform foundation (8);
The anchor bolt assembly (4) comprises two layers of positioning ring plates (40) and a plurality of anchor bolts (41), wherein the positioning ring plates (40) at the bottom layer are arranged inside reinforcing steel bars of the concrete cushion layer (5), the positioning ring plates (40) at the top layer are arranged at the top of the reinforcing steel bars of the concrete cushion layer (5), the anchor bolts (41) are uniformly and alternately penetrated and fixed on the two layers of positioning ring plates (40), the two layers of positioning ring plates (40) and the anchor bolts (41) are integrally cast in the concrete cushion layer (5) with the bottom of the anchor bolts (41) and the reinforcing steel bars, and the bottom end of the first small main column (11) is tightly attached to the positioning ring plates (40) at the top of the anchor bolts (41).
2. The tree-shaped support system at the main inlet of the steel structure according to claim 1, wherein the main column (1), the inclined column (2) and the bifurcation column (3) are all made of stainless steel pipes, and cross stiffening plates are arranged in the stainless steel pipes.
3. The steel structure main entrance tree-shaped supporting system according to claim 1 or 2, wherein the bifurcation column (3) comprises two first-stage bifurcation columns (30) and three second-stage bifurcation columns (31), the two first-stage bifurcation columns (30) are respectively a first bifurcation column and a second bifurcation column, the bottom end of the first bifurcation column is fixedly arranged at the top end of the inclined column (2), the bottom end of the second bifurcation column is fixedly arranged at a notch on the side edge of the inclined column (2), a Y-shaped structure is formed among the first bifurcation column, the second bifurcation column and the inclined column (2), the three second-stage bifurcation columns (31) are respectively a third bifurcation column, a fourth bifurcation column and a fifth bifurcation column, the bottom end of the third bifurcation column is fixedly arranged at the top end of the second bifurcation column, and the fourth bifurcation column and the fifth bifurcation column are fixedly arranged at the top end of the first bifurcation column through a tee column (32) and form the Y-shaped structure.
4. The steel structure main entrance tree-shaped support system according to claim 3, wherein the top ends of the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are level, and the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are connected by a top cross beam (33).
5. The tree-shaped support system at the main entrance of the steel structure according to claim 1, wherein the support ring beam (6) is a radial steel structure consisting of six or eight support beams (60), and one side surface of the support beam (60) is fixedly arranged on the top surface of the concrete cushion layer (5).
6. The tree-shaped support system at the main entrance of the steel structure according to claim 1 or 2, wherein the support frame (9) comprises a plurality of support rods (90) and two groups of radial steel beam assemblies (91), the third small main column (13) and the inclined column (2) are connected with the support frame (9) through one group of radial steel beam assemblies (91), the plurality of support rods (90) uniformly surround the periphery of the main column (1) at intervals, the bottoms of the support rods (90) are fixedly arranged on the concrete cushion layer (5), the radial steel beam assemblies (91) are radial steel structures formed by a plurality of steel beams with one ends fixedly arranged on the outer side wall of the third small main column (13) or the outer side wall of the inclined column (2) and the other ends fixedly connected with the support rods (90), and the number of the steel beams is consistent with that of the support rods (90).
7. The main entrance tree-like support system for steel structures according to claim 6, wherein a floor slab formwork is built on both sets of radial steel beam elements (91).
8. The steel structure main entrance tree-shaped support system according to claim 4, wherein the conversion truss (7) is a truss structure constructed by supporting three top cross beams (33) upwards.
9. The construction method of the tree-shaped support system at the main entrance of the steel structure according to any one of claims 1 to 8, which is characterized by comprising the following steps:
Firstly, binding bottom layer steel bars of a concrete cushion layer (5), fixedly mounting a bottom layer positioning ring plate (40) on the top of the bottom layer steel bars of the concrete cushion layer (5), binding top layer steel bars of the concrete cushion layer (5), fixedly mounting the top layer positioning ring plate (40) on the top of the top layer steel bars of the concrete cushion layer (5), mounting a cross steel frame at the central part of the top layer positioning ring plate (40), taking the cross steel frame as a mounting positioning datum point, mounting a plurality of anchor rods (41), removing the cross steel frame after adjusting the heights of the plurality of anchor rods, pouring concrete to form the concrete cushion layer (5), and exposing the top ends of the anchor rods (41) on the top of the concrete cushion layer (5) after pouring;
Installing a first small main column (11), hoisting the first small main column (11) to the embedded position of the anchor bolt assembly (4), then moving downwards, and fixedly connecting the bottom of the first small main column (11) with the top ends of a plurality of anchor bolts exposed out of the top of the concrete cushion layer (5);
Step three, installing a support ring beam (6), keeping the hoisting of the first small main column (11) not to loosen, sequentially completing the hoisting of a plurality of support beams (60), sequentially fixedly installing the support beams (60) on the concrete cushion layer (5) to form the support ring beam (6), and separating the lifting hook from the first small main column (11) after the installation of the support ring beam (6) is completed;
Step four, installing support rods (90), sequentially hoisting a plurality of support rods (90) and uniformly surrounding and installing the support rods around the periphery of the first small main column (11) at intervals, wherein the bottoms of the support rods (90) are fixedly installed on the concrete cushion layer (5);
installing a second small main column (12), lifting the second small main column (12) to the top of the first small main column (11) by using an automobile crane, and fixedly connecting the bottom end of the second small main column (12) with the top end of the first small main column (11);
Step six, installing diagonal braces (10), and uniformly and fixedly supporting a plurality of diagonal braces (10) between the second small main column (12) and the support beam (60) at intervals;
Pouring a bearing platform foundation (8), and pouring concrete at the bottoms of the first small main column (11), the second small main column (12), the support ring beam (6), the plurality of diagonal braces (10) and the bottom of the support frame (9) to form the bearing platform foundation (8);
step eight, installing a third small main column (13), lifting the third small main column (13) to the top of the second small main column (12) by using an automobile crane, and fixedly connecting the bottom end of the third small main column (13) with the top end of the second small main column (12);
Step nine, installing a bottom radial steel beam assembly (91), uniformly and fixedly installing a plurality of steel beams at intervals on the outer side wall of the third small main column (13), wherein the other ends of the steel beams are fixedly connected with the supporting rods (90) to form the bottom radial steel beam assembly (91);
Step ten, installing an inclined column (2), lifting the inclined column (2) to the top of the third small main column (13), and fixedly connecting the bottom end of the inclined column (2) with the top end of the third small main column (13);
Step eleven, installing a top-layer radial steel beam assembly (91), uniformly and radially and fixedly installing a plurality of steel beams at intervals on the outer side wall of the inclined column (2), and fixedly connecting the other ends of the steel beams with the supporting rods (90) to form a top-layer radial steel beam assembly (91) and a supporting frame (9);
Twelve, installing two layers of floor slabs, fixedly connecting two cross beams (92) between two adjacent support rods (90), arranging the two cross beams (92) at positions corresponding to two groups of radial steel beam assemblies (91), and building the floor slabs on the two groups of radial steel beam assemblies (91);
Step thirteen, constructing a temporary support, and constructing the temporary support at the top of the support frame (9);
fourteen, installing a first-grade bifurcation column (30), hoisting a first bifurcation column to the top of the diagonal column, fixedly installing the bottom end of the first bifurcation column at the top end of the diagonal column (2), hoisting a second bifurcation column to the side edge opening of the diagonal column, and fixedly installing the bottom end of the second bifurcation column at the side edge opening of the diagonal column (2);
Fifteen, installing a two-stage fork column (31), hoisting a third fork column to the top of the second fork column, and fixedly installing the bottom end of the third fork column to the top of the second fork column, hoisting a three-way column (32) to the top of the first fork column, and fixedly installing the bottom end of the three-way column (32) to the top of the first fork column;
Sixthly, installing a top cross beam (33), wherein the top ends of the third bifurcation column, the fourth bifurcation column and the fifth bifurcation column are connected by a top cross beam (33) in pairs to form a triangular stable structure;
seventeenth, installing a conversion truss (7), and upwards building the conversion truss (7) by means of three top cross beams (33);
And eighteenth, removing the temporary support, and removing the temporary support built on the top of the support frame (9).
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| CN117905208B (en) * | 2024-02-27 | 2026-06-30 | 中铁建设集团有限公司 | Tree-shaped column supporting curtain wall structure of large building and construction method |
| CN117822744B (en) * | 2024-03-06 | 2024-07-26 | 北京城建集团有限责任公司 | Tree column and modularized roof connection system and installation process |
| CN119352656B (en) * | 2024-12-25 | 2025-02-25 | 中国建筑第四工程局有限公司 | Tree column and modularized roof connection system and installation process |
| CN119754431B (en) * | 2025-01-23 | 2026-02-17 | 上海应用技术大学 | Supporting structure and building top cover |
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| CN104060690A (en) * | 2014-04-30 | 2014-09-24 | 浙江东南网架股份有限公司 | Crotch-shaped element and processing method thereof |
| CN207583002U (en) * | 2017-10-23 | 2018-07-06 | 深圳市山月园园艺有限公司 | A kind of support frame for setting room |
| CN112252353A (en) * | 2020-09-18 | 2021-01-22 | 中铁二局第四工程有限公司 | Cylindrical support node and construction method thereof |
| CN219753686U (en) * | 2023-03-20 | 2023-09-26 | 中建二局安装工程有限公司 | Double Y-shaped inclined column supporting system |
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| US9096985B1 (en) * | 2006-09-21 | 2015-08-04 | Ahmed Phuly | Foundation with slab, pedestal and ribs for columns and towers |
| CN104674945B (en) * | 2015-03-09 | 2016-08-17 | 中国建筑第八工程局有限公司 | Tree-like steel pipe column structure and construction method thereof |
| CN113789853B (en) * | 2021-10-12 | 2025-02-25 | 中建科工集团有限公司 | A support system for tree-shaped column structure installation |
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| CN104060690A (en) * | 2014-04-30 | 2014-09-24 | 浙江东南网架股份有限公司 | Crotch-shaped element and processing method thereof |
| CN207583002U (en) * | 2017-10-23 | 2018-07-06 | 深圳市山月园园艺有限公司 | A kind of support frame for setting room |
| CN112252353A (en) * | 2020-09-18 | 2021-01-22 | 中铁二局第四工程有限公司 | Cylindrical support node and construction method thereof |
| CN219753686U (en) * | 2023-03-20 | 2023-09-26 | 中建二局安装工程有限公司 | Double Y-shaped inclined column supporting system |
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