CN111075029B - Construction method for suspended splicing of bolt ball net rack and bulk expansion joint spanning construction method - Google Patents
Construction method for suspended splicing of bolt ball net rack and bulk expansion joint spanning construction method Download PDFInfo
- Publication number
- CN111075029B CN111075029B CN201911276781.6A CN201911276781A CN111075029B CN 111075029 B CN111075029 B CN 111075029B CN 201911276781 A CN201911276781 A CN 201911276781A CN 111075029 B CN111075029 B CN 111075029B
- Authority
- CN
- China
- Prior art keywords
- bolt ball
- span
- expansion joint
- net rack
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
-
- 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
- E04B1/1903—Connecting nodes specially adapted therefor
-
- 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
- E04B1/1903—Connecting nodes specially adapted therefor
- E04B1/1906—Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
Abstract
The invention relates to a mounting method of a bolt ball grid frame, in particular to a construction method of a suspended assembly bulk span expansion joint of the bolt ball grid frame. The method comprises the steps of firstly establishing a reference span, carrying out the extension installation construction of the net rack on the basis of the reference span, after the construction reaches the telescopic seam position, arranging an upper connecting rod between the first bolt balls on two sides of the expansion joint, arranging a lower connecting rod between the first bolt balls, and a first diagonal draw bar and a second diagonal draw bar which are arranged in a crossed manner, and dismantling all the upper connecting rods and the lower connecting rods at the expansion joint, the first diagonal draw bar and the second diagonal draw bar after the construction of the whole net rack is finished, thereby forming the complete net rack with the expansion joint structure. Every time one reference span construction is reduced, the installation progress can be accelerated for 3 days, the cost of assembling the bolt ball net rack in bulk is effectively reduced, and the construction efficiency is improved.
Description
Technical Field
The invention relates to a mounting method of a bolt ball grid frame, in particular to a construction method of a suspended assembly bulk span expansion joint of the bolt ball grid frame.
Background
Along with the popularization of the bolt ball grid structure, more and more coal and metallurgical industries use the bolt ball net shell structure to seal operation places, the length of the bolt ball grid structure is also developed from tens of meters to hundreds of meters, even thousands of meters, and particularly, the bolt ball grid structure is used for roof sealing projects of large-scale coal yards and metallurgical plants.
In the construction of the large-span bolt ball latticed shell structure, a suspension splicing and assembling method is more economical and applicable. The process only needs to assemble the reference span in situ, and after the reference span is checked and accepted, the reference span can be longitudinally and high-altitude bulk-assembled until the grid structure construction is finished. For example, CN 109707038A discloses a large area bolt-ball net rack high-altitude bulk modularized installation method. CN 102345393B discloses a bolt-sphere net rack high-altitude bulk loading process. The construction method is characterized in that a starting span (or a reference span) is constructed, and then the starting span (or the reference span) is extended towards two sides on the basis of the reference span. The scheme has low requirement on operation conditions, short construction period and low manufacturing cost.
However, for a construction site with a length of hundreds of meters or even thousands of meters, due to the characteristic of expansion and contraction of the steel structure, expansion joints are required to be reserved at certain intervals, so that structural damage caused by internal stress generated by expansion and contraction is prevented. In particular, the distance between the expansion joints of the net frames is generally short, and the narrowest part is only 1.2 meters, so that the net frame structure is required to be independently disconnected at the position crossing the expansion joints. That is, as shown in fig. 1, the bolt-ball net frame of thousands of meters needs to be divided into a plurality of independent units for installation and construction. Therefore, every time an expansion joint is arranged, which is equivalent to the installation of an independent net rack, the assembly of the reference span needs to be carried out again, so that the repeated assembly of the reference span is caused, the implementation difficulty is increased, the construction period is long, and the hoisting cost is higher.
Disclosure of Invention
The invention provides a construction method for a suspended assembly bulk span expansion joint of a bolt ball net rack, which aims to solve the technical problem of rapid construction of an expansion joint reserved in an ultra-long bolt ball net rack.
The invention has the technical scheme that the construction method of the expansion joint of the suspended and assembled bulk span of the bolt ball net rack comprises the steps of firstly establishing a reference span, carrying out the extending installation construction of the net rack on the basis of the reference span, wherein the basic connecting unit of each span net rack is in a four-face pyramid shape, four bolt balls on the bottom surface of the four-face pyramid shape are positioned at the upper layer, lower bolt balls at the top positions of the four-face pyramid shape are positioned at the lower layer,
after the expansion joint is constructed to the expansion joint position, an upper connecting rod is arranged on two upper bolt balls I on the outermost side of a basic connecting unit of a previous span of the expansion joint, the upper connecting rod is arranged according to the length direction of the whole net rack, the other end of the upper connecting rod is respectively connected with two upper bolt balls II on the outermost side of the basic connecting unit of a next span of the expansion joint, a lower connecting rod is arranged on a lower bolt ball I on the conical top position of the basic connecting unit of the previous span of the expansion joint, the lower connecting rod is connected with a lower bolt ball II on the conical top position of the basic connecting unit of the next span of the expansion joint, the lower connecting rod is arranged in parallel with the two upper connecting rods, a diagonal draw rod I is arranged between the upper bolt balls I and the lower bolt balls, a diagonal draw rod II is arranged between the upper bolt balls II and the lower bolt balls I, and the two upper bolt balls, the lower bolt balls II and the connecting rod between the upper bolt, and then carrying out normal net rack installation construction on the basis of the upper bolt ball II and the lower bolt ball II, repeating the operation after encountering a telescopic seam position, and dismantling the upper connecting rods, the lower connecting rods, the first inclined pull rods and the second inclined pull rods at all expansion joints after completing the construction of the whole net rack to form a complete net rack with an expansion joint structure.
Therefore, no matter how many meters of the net rack are long, only one reference span can be set, the long-distance extending splicing construction is carried out on the basis of the reference span, and the position where the expansion joint is met directly spans the construction according to the process. Every time one reference span construction is reduced, the installation progress can be accelerated for 3 days, the cost of assembling the bolt ball net rack in bulk is effectively reduced, and the construction efficiency is improved.
Drawings
FIG. 1 is a schematic view of a super-long grid structure
FIG. 2 is a schematic view of a single-span structure of a net rack
FIG. 3 is a schematic view of the structure of the net frame at the expansion joint
FIG. 4 is a schematic view of the installation of the expansion joint connection structure
FIG. 5 is a side view of FIG. 4
In the figure: 1-datum span, 2-expansion joint, 3-diagonal draw bar II, 4-upper bolt ball I, 5-upper connecting rod, 6-upper bolt ball II, 7-diagonal draw bar I, 8-lower bolt ball II, 9-lower connecting rod and 10-lower bolt ball I.
Detailed Description
A construction method for a bolt ball net rack suspension assembly bulk span expansion joint comprises the steps of firstly establishing a reference span 1, carrying out the span-by-span extension installation construction of the net rack on the basis of the reference span, as shown in figures 2 and 3, wherein the basic connection unit of each span net rack is in a four-face pyramid shape, four bolt balls at the bottom surface of the four-face pyramid shape are positioned at the upper layer, lower bolt balls at the top positions of the four-face pyramid shape are positioned at the lower layer,
as shown in fig. 3, 4 and 5, after the expansion joint 2 is constructed, an upper connecting rod 5 is arranged on two upper bolt balls 4 on the outermost side of a basic connecting unit A of a previous span of the expansion joint 2, the upper connecting rod 5 is arranged according to the length direction of the whole net rack, the other end of the upper connecting rod 5 is respectively connected with two upper bolt balls 6 on the outermost side of a basic connecting unit B of a next span of the expansion joint 2, a lower connecting rod 9 is arranged on a lower bolt ball 10 on the conical top position of the basic connecting unit A of the previous span of the expansion joint 2, the lower connecting rod 9 is connected with a lower bolt ball 8 on the conical top position of the basic connecting unit B of the next span of the expansion joint, the lower connecting rod 9 and the two upper connecting rods 5 are arranged in parallel, a diagonal draw bar 7 is arranged between the upper bolt ball 4 and the lower bolt ball 8, a diagonal draw bar 3 is arranged between the upper bolt ball 6 and the lower bolt ball 10, bolt ball two 6 and lower bolt ball 10 on two up so far, bolt ball two 8 and the connecting rod between form a stable expansion joint and excessively stride the structure down, then carry out normal rack extension installation construction on the basis of bolt ball two 6 and lower bolt ball two 8 down, meet the next flexible seam position after repeat above-mentioned operation can, accomplish whole rack construction back, with the last connecting rod of all expansion joints department, lower connecting rod and oblique pull rod one, oblique pull rod two is demolishd, form a complete rack that has the expansion joint structure promptly.
The connecting rod and the diagonal draw bar that tear down can be used in next expansion joint department and use, have avoided connecting material's secondary purchase, practice thrift time limit for a project and expense.
The length of the upper connecting rod 5 is 1200mm, and the length of the lower connecting rod 9 is 5200 mm.
And the cross point of the first diagonal draw bar 7 and the second diagonal draw bar 3 is welded in a penetration welding mode. Intersecting notches are reserved at the intersection of the two diagonal draw bars, and intersecting lines are adopted for cutting. During installation, a special wrench is adopted for screwing, groove welding is adopted at the intersection of the diagonal draw bars, and the welding line grade is the same as that of a rod piece and a conical head connecting welding line, and is usually the second grade.
The invention needs to determine the position of the screw hole on the bolt ball at the expansion joint, and the hole is made in a manufacturing factory in advance without on-site hole making, so that the connection precision is easier to ensure while the working hour is saved.
Intersecting notches are reserved at the intersection of the two diagonal draw bars, and intersecting lines are adopted for cutting. During installation, a special wrench is adopted for screwing, groove welding is adopted at the intersection of the diagonal draw bars, and the welding line grade is the same as that of a rod piece and a conical head connecting welding line, and is usually the second grade. And (5) after the whole net rack is installed, dismantling the expansion joint connecting rod piece.
Particularly, the whole net rack only uses one reference span, and the continuous installation precision of the multi-area net rack structure is higher than that of the traditional net rack with each area for installing a plurality of reference spans respectively. The displacement value of the net rack in the implementation process is smaller than that of the partition installation grid.
Compared with the traditional method for assembling the standard spans in the subarea installation subareas, the method can accelerate the installation progress for 3 days by reducing one standard span, and effectively reduces the bulk cost of assembling the bolt device net rack in a hanging manner. A rack span of 90M, each reduction of one reference span can save about 9000+144000+9000=162000 dollars, as follows:
labor cost: 3 days 300 x 10 people =9000 yuan
Hoisting cost: 11000 yuan 4 pieces by 3 days +4000 yuan 1 piece by 3 days =144000 yuan
Support cost: 2T 4500-membered = 9000-membered.
If the specific project net rack has longer axis and more expansion joints, the cost is saved more obviously. The process can be popularized and used in the method for assembling the bolt ball net rack in bulk in the whole social range.
Claims (3)
1. A construction method for a suspended splicing bulk span expansion joint of a bolt ball net rack is characterized by comprising the following steps: the method comprises the steps of firstly establishing a reference span, carrying out span-by-span extension installation construction on the basis of the reference span, wherein a basic connecting unit of each span of the net rack is in a four-face pyramid shape, four bolt balls on the bottom surface of the four-face pyramid shape are positioned on an upper layer, a lower bolt ball at the top position of the four-face pyramid shape is positioned on a lower layer, after constructing to the position of an expansion joint (2), an upper connecting rod (5) is arranged on two upper bolt balls (4) on the outermost side of a basic connecting unit A of a previous span of the expansion joint (2), the upper connecting rod (5) is arranged according to the length direction of the whole net rack, the other end of the upper connecting rod (5) is respectively connected with two upper bolt balls (6) on the outermost side of a basic connecting unit B of a next span of the expansion joint (2), and a lower connecting rod (9) is arranged on a lower bolt ball (10) at the top position of, the lower connecting rod (9) is connected with a lower bolt ball II (8) at the conical top position of a basic connecting unit B of the next span of the expansion joint, the lower connecting rod (9) and two upper connecting rods (5) are arranged in parallel, a diagonal draw bar I (7) is arranged between an upper bolt ball I (4) and a lower bolt ball II (8), a diagonal draw bar II (3) is arranged between an upper bolt ball II (6) and a lower bolt ball I (10), so far, the two upper bolt ball I (4), the two upper bolt ball II (6), the lower bolt ball I (10), the lower bolt ball II (8) and connecting rods between the two upper bolt ball I (4) and the two lower bolt ball II (8) form a stable expansion joint excessive span structure, then normal net rack extending installation construction is carried out on the basis of the upper bolt ball II (6) and the lower bolt ball II (8), the operation is repeated after the next expansion joint position is met, and after the whole net rack construction is completed, the upper connecting rods, the lower connecting rods, The lower connecting rod, the first diagonal draw bar and the second diagonal draw bar are dismantled, and a complete net rack with an expansion joint structure is formed.
2. The construction method of the bolt ball net rack suspension assembly bulk span expansion joint according to claim 1, characterized in that: the length of the upper connecting rod (5) is 1200mm, and the length of the lower connecting rod (9) is 5200 mm.
3. The construction method of the bolt ball net rack suspension assembly bulk span expansion joint according to claim 1, characterized in that: and the cross points of the first diagonal draw bars (7) and the second diagonal draw bars (3) are welded in a penetration welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276781.6A CN111075029B (en) | 2019-12-12 | 2019-12-12 | Construction method for suspended splicing of bolt ball net rack and bulk expansion joint spanning construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276781.6A CN111075029B (en) | 2019-12-12 | 2019-12-12 | Construction method for suspended splicing of bolt ball net rack and bulk expansion joint spanning construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111075029A CN111075029A (en) | 2020-04-28 |
| CN111075029B true CN111075029B (en) | 2021-03-12 |
Family
ID=70314396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911276781.6A Active CN111075029B (en) | 2019-12-12 | 2019-12-12 | Construction method for suspended splicing of bolt ball net rack and bulk expansion joint spanning construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111075029B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113502923A (en) * | 2021-06-30 | 2021-10-15 | 中国二十二冶集团有限公司 | Construction method for assisting second start-free of reticulated shell structure at expansion joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592760A (en) * | 2016-12-29 | 2017-04-26 | 青建集团股份公司 | High-altitude assembling construction method for bolt-sphere net frame |
| CN109653369A (en) * | 2018-11-27 | 2019-04-19 | 郑州大学 | A kind of Single Layer Sphere Grids frame membrane structure triangular structure unit |
| CN110258926A (en) * | 2018-08-21 | 2019-09-20 | 李藏柱 | A kind of monolithic reinforced rack and prefabricated board and its connection structure comprising the rack |
| CN209723213U (en) * | 2018-12-29 | 2019-12-03 | 贵州建工安顺建筑工程有限公司 | A kind of steel structure net rack for gymnasium roof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190106876A1 (en) * | 2017-10-10 | 2019-04-11 | Linus Industries, LLC | Triaxial weave for the production of stiff structural manifolds for use in structures and weaving method thereof |
-
2019
- 2019-12-12 CN CN201911276781.6A patent/CN111075029B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592760A (en) * | 2016-12-29 | 2017-04-26 | 青建集团股份公司 | High-altitude assembling construction method for bolt-sphere net frame |
| CN110258926A (en) * | 2018-08-21 | 2019-09-20 | 李藏柱 | A kind of monolithic reinforced rack and prefabricated board and its connection structure comprising the rack |
| CN109653369A (en) * | 2018-11-27 | 2019-04-19 | 郑州大学 | A kind of Single Layer Sphere Grids frame membrane structure triangular structure unit |
| CN209723213U (en) * | 2018-12-29 | 2019-12-03 | 贵州建工安顺建筑工程有限公司 | A kind of steel structure net rack for gymnasium roof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113502923A (en) * | 2021-06-30 | 2021-10-15 | 中国二十二冶集团有限公司 | Construction method for assisting second start-free of reticulated shell structure at expansion joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111075029A (en) | 2020-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210798990U (en) | Corrugated steel lining combined member for tunnel | |
| CN104929373A (en) | Large-span square steel pipe truss and accumulative sliding construction method thereof | |
| CN111075029B (en) | Construction method for suspended splicing of bolt ball net rack and bulk expansion joint spanning construction method | |
| CN114525877B (en) | Stadium combined roof based on large cantilever inclined triangular truss and construction method | |
| CN106284838B (en) | A kind of lattice honeycomb girder segment and large span lattice girder steel and its fabrication and installation method | |
| CN102261043B (en) | Assembled steel pipe upright post system | |
| CN211333866U (en) | High-speed railway beam-making pedestal suitable for unfavorable geology | |
| CN206529888U (en) | A kind of assembled corrugated web occlusion beam column node connection device for recovering function | |
| CN102828616B (en) | High-formwork support system for roof | |
| US3676964A (en) | Frame and building structure and method of constructing same | |
| CN108518008B (en) | Rigid roof structure on flexible inhaul cable structure and mounting method thereof | |
| CN216811161U (en) | Modular structure of airport terminal corridor | |
| CN115341653B (en) | Steep gentle slope radian abrupt change multi-curved-surface steel reticulated shell building structure and construction process thereof | |
| CN114961282B (en) | Single-layer latticed shell structure streamer construction method with middle cylinder column | |
| CN202152442U (en) | Assembling type steel tube-vertical post system | |
| CN214940962U (en) | Large-span steel construction vestibule | |
| CN210140833U (en) | A single collateral branch mode structure of bailey piece for bridge and culvert engineering | |
| CN114837483A (en) | High-low span portal steel frame building structure and construction process thereof | |
| CN109469257B (en) | Large-span gradual-change polygonal cross section parallel truss roof and construction method | |
| CN111827678A (en) | Method for hoisting truss steel structure at top of silo | |
| CN110666953A (en) | High-speed railway beam-making pedestal suitable for unfavorable geology and construction method thereof | |
| CN105297891A (en) | Flexing constraint support and concrete beam-column T-shaped steel anchoring and connecting node | |
| CN218880881U (en) | Steel supporting structure | |
| CN210066511U (en) | Light steel bar framework | |
| CN211172368U (en) | Assembled steel bar processing shed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |