CN116290810A - Construction method of double-layer polygonal separation chamber lattice type support - Google Patents
Construction method of double-layer polygonal separation chamber lattice type support Download PDFInfo
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- CN116290810A CN116290810A CN202310175350.0A CN202310175350A CN116290810A CN 116290810 A CN116290810 A CN 116290810A CN 202310175350 A CN202310175350 A CN 202310175350A CN 116290810 A CN116290810 A CN 116290810A
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- 238000000926 separation method Methods 0.000 title claims abstract description 69
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 132
- 239000010959 steel Substances 0.000 claims abstract description 132
- 239000010410 layer Substances 0.000 claims abstract description 65
- 238000009434 installation Methods 0.000 claims abstract description 26
- 239000002356 single layer Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000013461 design Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 12
- 239000003973 paint Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 241001625808 Trona Species 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- E04G21/14—Conveying or assembling building elements
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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 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
- E04B1/38—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
- 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
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
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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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
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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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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Abstract
The invention relates to a construction method of a double-layer polygonal separation chamber lattice type support, which comprises a double-layer part and a single-layer part in the height direction. Firstly, column bottom plate installation and double-layer component assembly installation are carried out; the inner ring steel pipe column and the outer ring steel pipe column in the double-layer component are respectively connected with the column bottom plate. And before the upper section of the separation chamber equipment is hoisted, a hoisting tool for constructing the separation chamber support is arranged at the top of the upper section of the separation chamber equipment, and the single-layer part is hoisted in place by adopting the hoisting tool at the top of the upper section of the separation chamber equipment. According to the invention, the single-layer component is hoisted in place by the grouping assembly method and by utilizing the hoisting tool at the top of the upper section of the separation chamber equipment, so that the simple construction of the double-layer polygonal separation chamber lattice type support is realized, the smooth construction and construction quality of the separation chamber support are ensured, the construction time and cost are reduced, and the construction safety risk is reduced.
Description
Technical Field
The invention belongs to the technical field of chemical equipment installation, and particularly relates to a construction method of a lattice type bracket of a separation chamber of a trona plant.
Background
In the trona project, the separation type is installed in a separation type bracket. Taking a certain trona project as an example, the separation chamber bracket is designed into a dodecagon lattice bracket, the diameter of an outer tangent circle of an inner ring is 12m, the diameter of an outer tangent circle of the outer ring is 16.2m, wherein the elevation section of the bracket between +0.350 and +23.000m is a double-layer polygonal lattice bracket, the elevation section between +23.000 and +41.900m is a single-layer polygonal lattice bracket, and the total height of the bracket is 41.9m. The bracket mainly comprises steel pipe columns (non-shrinkage concrete is poured in the steel pipe columns), steel beam, steel pipe inclined support, platform railing and the like which are welded together, and steel components are prefabricated by a processing plant.
At present, in similar engineering construction, inclined struts among an inner ring column, an outer ring column and an inner column and an outer column are usually integrally hoisted after being prefabricated in a ground segmentation and segmentation group, and then the inclined struts among two adjacent segmentation are installed.
Under the condition, the construction is carried out according to the traditional construction method, and the defects of more high-altitude operation, high difficulty in installation precision control, large investment of hoisting machinery and constructors, long construction period, complex high-altitude operation construction and the like exist. How to adopt an improved and better construction method is particularly important to solve the problems.
Disclosure of Invention
The invention aims to provide a construction method of a double-layer polygonal separated lattice type bracket so as to improve the construction efficiency and the construction safety of the double-layer polygonal separated lattice type bracket.
In order to solve the technical problems, the invention adopts the following technical scheme: the double-layer polygonal separation chamber lattice type support comprises a double-layer part and a single-layer part in the height direction; the construction method comprises the following steps:
step one, mounting a column bottom plate;
step two, assembling and installing double-layer components;
the double-layer component is formed by assembling an inner layer component and an outer layer component, wherein the inner layer component comprises a plurality of inner ring steel pipe columns which are arranged at intervals, and a steel cross beam and an inclined support are arranged between the inner ring steel pipe columns; the outer layer part comprises a plurality of outer ring steel pipe columns which are arranged at intervals, and a steel beam and an inclined support are arranged between the outer ring steel pipe columns; the inner ring steel pipe column and the outer ring steel pipe column are respectively connected with the column bottom plate;
step three, lifting equipment of the separation chamber and lifting appliance installation for construction of a support of the separation chamber;
the separation chamber equipment is respectively hoisted into position in an upper section and a lower section, wherein the middle part of the lower section of the separation chamber equipment is arranged at the top of an inner ring steel pipe column at the top of the double-layer part; a lifting appliance for constructing a separation chamber bracket is arranged at the top of the upper section of the separation chamber equipment before the upper section of the separation chamber equipment is lifted, a lifting basket is arranged at the inner side of the lifting appliance, a lifting hook lifting member is arranged at the outer side of the lifting appliance,
step four, assembling and installing single-layer parts;
the single-layer component is formed by a plurality of steel pipe column pairs which are arranged at intervals, and steel cross beams and inclined supports are connected between the steel pipe columns; and hoisting the single-layer part into position by adopting a hoisting tool at the top of the upper section of the separation chamber equipment.
In the first step, the column bottom plate and the shear key are prefabricated into a whole, the column bottom plate and the shear key are installed on foundation bolts, and then the column bottom plate is installed after a backing plate is added and fastened by nuts.
Further, the double-layer component comprises a first section support and a second section support, the first section support at the bottom is firstly installed, then the second section support is installed on the upper portion of the first section support, and the first section support and the second section support are connected through corresponding connecting plates on the inner ring steel pipe column and the outer ring steel pipe column.
Further, the single-layer component comprises a third section bracket and a fourth section bracket; the third section support is installed on the upper portion of the second section support, and the fourth section support is installed on the upper portion of the third section support.
In the second step, two inner ring steel pipe columns, two outer ring steel pipe columns and accessories are assembled on the ground to form a double-layer assembly part, and a plurality of double-layer assembly parts are formed according to the structural design assembly of the double-layer assembly part; sequentially hoisting and installing each double-layer assembly part of each assembled group at intervals, and then installing a steel beam and a supporting part in a reserved interval; the first section of support and the second section of support are respectively connected in a pairing mode according to the method.
In the second step, the accessories comprise column foot rib plates, bracket and connecting plates; prefabricating an outer ring steel pipe column and the accessory into a whole; prefabricating the inner ring steel pipe column and the accessory into a whole.
Further, the double layer pair members are 6 groups in total.
Furthermore, non-shrinkage concrete is poured in the inner ring steel pipe column and the outer ring steel pipe column of the first section support and the second section support which are installed.
Compared with the conventional construction method, the construction method has the advantages that the single-layer component is hoisted in place by using the hoisting tool at the top of the upper section of the separation chamber equipment through the grouping and pairing method, so that the simple construction of the double-layer polygonal separation chamber lattice type support is realized, the smooth construction and construction quality of the separation chamber support are ensured, the construction time and cost are reduced, and the construction safety risk is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention.
Fig. 1 is a plan view of a steel pipe column in an embodiment of the present invention.
Fig. 2 is a plan view of a first set of components of a first stage of the stent in an embodiment of the present invention.
Fig. 3 is an elevation view of a first set of components of a first stage of the bracket in accordance with an embodiment of the present invention.
Fig. 4 is an elevation view of the construction of the components between the various sets of components in an embodiment of the invention.
Fig. 5 is an elevation view of an upper single layer bracket construction in an embodiment of the invention.
In the figure, a 1-bottom positioning center steel plate, a 2-outer ring steel pipe column, a 3-ladder, a 4-steel beam, a 5-bracket, a 6-column bottom plate, a 7-column foot rib plate, an 8-inner ring steel pipe column, a 9-shear key, a 10-anchor bolt, an 11-backing plate, a 12-diagonal brace, a 13-railing, a 14-connecting plate, a 15-platform, a 16-hanging basket, a 17-winch, an 18-component, a 19-separation chamber lower section, a 20-separation chamber upper section, a 21-reinforcing ring, a 22-hanging tool and a 23-hanging basket.
Detailed Description
For a better understanding of the present invention, reference will be made to the following description of the invention taken in conjunction with the accompanying drawings and examples. In addition, features in the embodiments and examples of the present application may be combined with each other without conflict.
The invention provides a double-layer polygonal separation chamber lattice type bracket, which comprises a double-layer part and a single-layer part in the height direction; the construction method comprises the following steps.
Step one, the column floor 6 is installed.
The basic retest is firstly carried out, then the column bottom plate 6 is installed on the foundation, and finally the installation axis of the steel pipe column is drawn on the column bottom plate 6.
And step two, assembling and installing double-layer parts.
The first section support and the second section support are double-layer components.
The double-layer component is formed by assembling an inner layer component and an outer layer component, wherein the inner layer component comprises a plurality of inner ring steel pipe columns 8 which are arranged at intervals, and a steel cross beam 4 and an inclined support 12 are installed and connected between the inner ring steel pipe columns 8; the outer layer part comprises a plurality of outer ring steel pipe columns 2 which are arranged at intervals, and a steel cross beam 4 and an inclined support 12 are installed and connected between the outer ring steel pipe columns 2; the inner ring steel pipe column 8 and the outer ring steel pipe column 2 are connected to the column bottom plate 6, respectively.
In the first section of support field assembly, four steel pipe columns (two inner ring steel pipe columns 8 and two outer ring steel pipe columns 2) with a ladder platform and accessories are assembled into a group on the ground, other steel pipe columns and accessories are assembled into a group by sequentially spacing a span, four steel pipe columns in each group are assembled, and each group of assembled structures are respectively hoisted and installed. And then the steel cross beam 4 and the inclined support 12 in the reserved interval are installed, after the steel cross beam 4 and the inclined support 12 are connected to form a whole, each item of data is rechecked, concrete pouring in the steel pipe column is carried out after the data is correct, and after the concrete meets the strength requirement, the second section of bracket installation is carried out, wherein the installation method is the same as that of the first section.
The column bottom plate 6 is prefabricated separately from the steel pipe columns (inner ring steel pipe column 8 and outer ring steel pipe column 2) in the first section of the bracket. The bottom positioning center steel plate 1 is buried at the center point of the foundation, the center cross axis is scored, retest is carried out on each steel pipe column foundation, the column bottom plate 6 is installed, and the positioning axis is scored on the column bottom plate 6.
The first section of support increases the field assembly depth, and every four steel pipe columns and accessories are assembled into a part, and six parts are all formed. The four steel pipe columns with the ladder platform and accessories are assembled on the ground to form a group, and the accessories comprise steel cross beams, inclined supports, a platform 15, a ladder 3, a railing 13 and the like, and are installed in place as a first group of component pairs. After the first group of field assembly welding is completed, rust removal and paint repair are carried out on all welding seams, then the welding seams are hoisted in place, and after the installation size is adjusted, the welding of the steel pipe column and the column bottom plate 6 is carried out.
And after the two groups of parts are installed, a top center positioning plate is arranged at the top of the part, and the center of the top center positioning plate is concentric with the center of the bottom center positioning plate. The parts are installed from both sides simultaneously in sequence, starting from the first group of parts to the left to the third group and the fifth group, starting from the right to the fourth group and the sixth group. After the six groups of components are installed, the installation size rechecking is carried out, after the rechecking is carried out, the first group, the third group, the first group, the fourth group, the third group, the fifth group, the fourth group, the sixth group, the second group, the fifth group, the top steel cross beams between the second group and the sixth group and the platform 15 are respectively installed, a hanging basket 16 is arranged between the inner ring and the outer ring below the platform 15 and is used as an operation platform for constructors, a hoist 17 is arranged on the inner side of the inner ring and the outer side of the outer ring on the platform 15 and is matched with the steel cross beams to hoist the inclined support 12, and the connection installation of components among the groups of components is completed.
Pouring non-shrinkage concrete in the installed first section of steel pipe column, performing second section construction after the strength reaches the design requirement, wherein the second section of prefabricated installation method is the same as that of the first section, and the second section of steel pipe column is connected with the first section of steel pipe column through a connecting plate 14 bolt when the connection part of the second section of steel pipe column and the first section of steel pipe column is installed, welding the first section of steel pipe column and the second section of steel pipe column after the installation size is checked to meet the requirement, and dismantling the positioning connecting plate 14 after welding is completed.
And pouring non-shrinkage concrete in the second section of steel pipe column after the installation is completed, installing the lower section 19 of the separation chamber after the strength reaches the design requirement, installing the upper section of the separation chamber equipment and installing an equipment platform after the lower section 19 of the separation chamber is aligned, and arranging a temporary hoisting machine at the pipe orifice at the top of the separation chamber equipment.
Step three, lifting devices 22 for lifting and installing the separation chamber equipment and constructing the separation chamber support are installed;
the separation chamber equipment is respectively hoisted into position in an upper section and a lower section, wherein the middle part of the lower section of the separation chamber equipment is arranged at the top of an inner ring steel pipe column 8 at the top of the double-layer part; before the upper section of the separation chamber equipment is hoisted, a lifting appliance for the construction of the separation chamber support is arranged at the top of the upper section of the separation chamber equipment, a hanging basket 23 is arranged at the inner side of the lifting appliance, and a lifting hook hoisting member is arranged at the outer side of the lifting appliance.
And fourthly, assembling the single-layer component assembly.
The third section of support and the fourth section of support are of a single-layer structure.
The single-layer component is formed by a plurality of steel pipe column pairs which are arranged at intervals, and steel cross beams 4 and inclined supports are connected between the steel pipe columns; and hoisting the single-layer part into position by adopting a hoisting tool at the top of the upper section of the separation chamber equipment.
When the third section of bracket is prefabricated, two adjacent steel pipe columns and accessories are connected into a group, the steel pipe columns and accessories are installed in a hoisting mode in a piece mode, steel beams 4 and support installation in a reserved interval are carried out, after the steel beams are connected into a whole, all data are rechecked, concrete pouring in the steel pipe columns is carried out after the data are rechecked, and after the concrete meets the strength requirement, the fourth section of bracket is prefabricated, wherein the method is the same as that of the third section of bracket.
After the prefabrication of the third section of support is completed, each part is hoisted in place by a hoisting tool 22 at the top of the separation chamber device in sequence, and then the steel cross beams and the inclined supports among each group of parts are installed. The fourth section of bracket installation method is the same as that of the third section of bracket, and after the fourth section of bracket is installed, the paint is brushed on all the brackets.
The technical scheme and the technical effects of the invention are further and clearly described through a relatively specific embodiment.
The trona project separation chamber bracket of a certain company is designed into a dodecagon lattice bracket, the diameter of an outer circle tangent to the inner circle is 12m, the diameter of the outer circle tangent to the outer circle is 16.2m, wherein the elevation section of the bracket +0.350 to +23.000m is a double-layer polygonal lattice bracket, the elevation section of the bracket +23.000 to +41.900m is a single-layer polygonal lattice bracket, and the total height of the bracket is 41.9m. The support mainly comprises steel pipe columns (non-shrinkage concrete is poured in the steel pipe columns), steel beam, steel pipe inclined supports, a railing 13 and the like, wherein the steel component is prefabricated by a processing plant, the steel component is constructed by a method of on-site splicing installation, the steel pipe columns are prefabricated into four sections according to the transportation installation condition, the first section is +0.350- +13.200m, the second section is +13.200- +24.300m, the third section is +24.300- +33.800m, the fourth section is + 33.800- +41.900m, and separation chamber equipment is installed on the top of the inner steel pipe column at the elevation of +23.000 m.
The process flow for installing the separation chamber lattice type bracket in the embodiment comprises the following steps: the bottom positioning center steel plate 1 is buried, the foundation is retested, the processing plant is prefabricated, the component approach inspection and acceptance is carried out, the column bottom plate 6 is installed, the double-layer component assembly is installed, the components between the double-layer components are installed, the separation chamber equipment and the separation chamber support are prefabricated and hoisted by the lifting appliance 22 for construction, the single-layer component assembly is installed, the components between the single-layer components are installed, the paint is brushed in a repairing mode, and the completion inspection and acceptance is carried out.
As shown in fig. 1, according to the arrangement condition of the steel pipe column of the separation chamber support, a bottom positioning center steel plate 1 is buried in the center of the foundation, retesting is carried out on the separation chamber support foundation, and a positioning axis is scored on a column bottom plate 6.
As shown in fig. 2 and 3, the column bottom plate 6 and the shear key 9 are prefabricated into a whole, the column bottom plate is mounted on the anchor bolts 10, the backing plate 11 is fastened by nuts, and the outer ring steel pipe column 2, the column foot rib plate 7, the bracket 5 and the connecting plate 14 are prefabricated into a whole. Prefabricating an inner ring steel pipe column 8, column foot rib plates 7, corbels 5 and connecting plates 14 into a whole, prefabricating a ladder 3 and a railing 13 in sections, transporting the components to the site, connecting two outer ring steel pipe columns 2 and two inner ring steel pipe columns 8, connecting the steel cross beam 4, the ladder 3, an inclined support 12, the railing 13 and a platform 15 into parts, welding, simultaneously carrying out rust removal repair paint on welding seams on the ground, integrally hoisting the parts, welding the two outer ring steel pipe columns 2, the two inner ring steel pipe columns 8 and a column bottom plate 6, and aligning the parts through adjusting nuts on foundation bolts after the parts are installed.
As shown in fig. 4, starting from the first group of double-layer group pair members, a third group of double-layer group pair members and a fifth group of double-layer group pair members are left, starting from the right, a fourth group of double-layer group pair members and a sixth group of double-layer group pair members are right, and the opposite side of the first group of double-layer group pair members is a second group of double-layer group pair members, and the total number of double-layer group pair members is 6.
And the parts are assembled from the first double-layer group to the two sides simultaneously and sequentially. After the six groups of components are installed, the installation size rechecking is carried out, after the rechecking is carried out, the first group, the third group, the fourth group, the third group, the fifth group, the fourth group, the sixth group, the second group, the fifth group, the second group and the sixth group are respectively carried out on the top steel cross beam 4 and the platform 15 between the double-layer paired components, a hanging basket 16 is arranged between the inner ring and the outer ring below the platform 15 to serve as a constructor operation platform, a hoist 17 is arranged on the inner side of the inner ring and the outer side of the outer ring on the platform to finish the hoisting of the component 18, the connection installation of the component 18 between the components of each group is finished, and the first section of bracket installation is finished.
After the first section of support is installed, checking each installation size, performing concrete pouring in the steel pipe column after corresponding requirements are met, installing the second section of support by the same method, fixing the second section of support and the corresponding inner ring steel pipe column 8 and outer ring steel pipe column 2 of the first section of support by using connecting plates 14 respectively, checking each installation size of the second section of support, welding the first section of steel pipe column and the second section of steel pipe column after corresponding requirements are met, and performing concrete pouring in the second section of steel pipe column.
And checking the installation dimensions of the second section of support, hoisting the lower section 19 of the separation chamber after meeting the corresponding requirements, and hoisting the upper section 20 of the separation chamber.
As shown in fig. 5, a hanger 22 for construction of a separation chamber support is mounted on the top of the separation chamber upper section 20 before the separation chamber upper section 20 is lifted, a hanging basket 23 is arranged on the inner side of the hanger 22 as a constructor operation platform through the hanger 22 for construction of the separation chamber support, and a lifting hook lifting member 18 is arranged on the outer side of the hanger 22, so that the third section of separation chamber support mounting is completed.
When the third section support is installed, the two steel pipe columns 2, the steel cross beam 4 and the inclined support 12 on the outer side are assembled into a whole on the ground, six steel pipe columns are integrally hoisted, the third section support and the second section support are fixed to the corresponding steel pipe columns through the connecting plates 14, the steel cross beam 4 and the inclined support 12 between the two steel pipe columns are connected after hoisting is completed, each installation size is checked, and welding between the steel pipe columns is completed after corresponding requirements are met.
And (3) finishing the mounting of the fourth section of separation chamber bracket by using the same construction method of mounting the third section of separation chamber, removing the lifting appliance 22 for the construction of the top separation chamber bracket, performing rust removal and painting on all welding seams, and then performing finish paint painting on the whole bracket.
The scope of the present invention is not limited to the above embodiments, but various modifications and alterations of the present invention will become apparent to those skilled in the art, and any modifications, improvements and equivalents within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A construction method of a double-layer polygonal separation chamber lattice type support is characterized by comprising the following steps: the double-layer polygonal separation chamber lattice type support comprises a double-layer part and a single-layer part in the height direction; the construction method comprises the following steps:
step one, mounting a column bottom plate;
step two, assembling and installing double-layer components;
the double-layer component is formed by assembling an inner layer component and an outer layer component, wherein the inner layer component comprises a plurality of inner ring steel pipe columns which are arranged at intervals, and a steel cross beam and an inclined support are arranged between the inner ring steel pipe columns; the outer layer part comprises a plurality of outer ring steel pipe columns which are arranged at intervals, and a steel beam and an inclined support are arranged between the outer ring steel pipe columns; the inner ring steel pipe column and the outer ring steel pipe column are respectively connected with the column bottom plate;
step three, lifting equipment of the separation chamber and lifting appliance installation for construction of a support of the separation chamber;
the separation chamber equipment is respectively hoisted into position in an upper section and a lower section, wherein the middle part of the lower section of the separation chamber equipment is arranged at the top of an inner ring steel pipe column at the top of the double-layer part; a lifting appliance for constructing a separation chamber bracket is arranged at the top of the upper section of the separation chamber equipment before the upper section of the separation chamber equipment is lifted, a lifting basket is arranged at the inner side of the lifting appliance, a lifting hook lifting member is arranged at the outer side of the lifting appliance,
step four, assembling and installing single-layer parts;
the single-layer component is formed by a plurality of steel pipe column pairs which are arranged at intervals, and steel cross beams and inclined supports are connected between the steel pipe columns; and hoisting the single-layer part into position by adopting a hoisting tool at the top of the upper section of the separation chamber equipment.
2. The method according to claim 1, characterized in that: in the first step, the column bottom plate and the shear key are prefabricated into a whole, the column bottom plate and the shear key are installed on foundation bolts, and then the column bottom plate is installed after a backing plate is added and fastened by nuts.
3. The method according to claim 1 or 2, characterized in that: the double-layer component comprises a first section support and a second section support, wherein the first section support at the bottom is firstly installed, then the second section support is installed on the upper part of the first section support, and the first section support and the second section support are connected through corresponding connecting plates on the inner ring steel pipe column and the outer ring steel pipe column.
4. A method according to claim 3, characterized in that: the single-layer component comprises a third section bracket and a fourth section bracket; the third section support is installed on the upper portion of the second section support, and the fourth section support is installed on the upper portion of the third section support.
5. The method according to claim 4, wherein: in the second step, the double-layer component is assembled, firstly, two inner ring steel pipe columns, two outer ring steel pipe columns and accessories are assembled on the ground to form a double-layer assembly component, and a plurality of groups of double-layer assembly components are formed according to the structural design assembly of the double-layer component; sequentially hoisting and installing each double-layer assembly part of each assembled group at intervals, and then installing a steel beam and a supporting part in a reserved interval; the first section of support and the second section of support are respectively connected in a pairing mode according to the method.
6. The method according to claim 5, wherein: in the second step, the accessory comprises column foot rib plates, bracket and connecting plates; prefabricating an outer ring steel pipe column and the accessory into a whole; prefabricating the inner ring steel pipe column and the accessory into a whole.
7. The method according to claim 5 or 6, characterized in that: the double-layer pairing parts are 6 groups.
8. The method according to claim 7, wherein: and pouring non-shrinkage concrete in the inner ring steel pipe column and the outer ring steel pipe column of the first section bracket and the second section bracket which are installed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310175350.0A CN116290810A (en) | 2023-02-28 | 2023-02-28 | Construction method of double-layer polygonal separation chamber lattice type support |
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| CN202310175350.0A CN116290810A (en) | 2023-02-28 | 2023-02-28 | Construction method of double-layer polygonal separation chamber lattice type support |
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