CN113585828A - Installation method of large-span inverted triangular pipe truss slope roof workshop - Google Patents
Installation method of large-span inverted triangular pipe truss slope roof workshop Download PDFInfo
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- CN113585828A CN113585828A CN202010366410.3A CN202010366410A CN113585828A CN 113585828 A CN113585828 A CN 113585828A CN 202010366410 A CN202010366410 A CN 202010366410A CN 113585828 A CN113585828 A CN 113585828A
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- 238000009434 installation Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 69
- 239000010959 steel Substances 0.000 claims abstract description 69
- 238000010276 construction Methods 0.000 claims abstract description 14
- 210000001503 joint Anatomy 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 19
- 239000004567 concrete Substances 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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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- 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
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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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
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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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3544—Extraordinary methods of construction, e.g. lift-slab, jack-block characterised by the use of a central column to lift and temporarily or permanently support structural 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3577—Extraordinary methods of construction, e.g. lift-slab, jack-block prefabricating a building and moving it as a whole to the erection site
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- Architecture (AREA)
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Abstract
The invention particularly relates to an installation method of a large-span inverted triangular pipe truss sloping roof workshop; step 1, construction preparation; step 2, supporting and mounting steel columns and columns; step 3, assembling the roof truss girder; step 4, installing the roof truss girder; step 5, mounting the roof secondary truss; step 6, roof supports and purlines are installed; and 7, repeating the steps until the operation is finished. The invention reasonably splits the large-span inverted triangular pipe truss roof truss girder, realizes accurate assembly through the developed jig frame, reduces high-altitude operation and safety risk, establishes a set of complete module assembly and high-altitude butt joint method for bearing roof supports and purlins, effectively improves construction efficiency and ensures construction quality.
Description
Technical Field
The invention relates to the field of building construction, in particular to an installation method of a large-span inverted triangular pipe truss sloping roof factory building.
Background
The C-shaped closed environment-friendly stock ground can play a role in saving limited space and meeting continuous and safe operation of production line equipment in the storage and transportation links of industrial raw materials. Because of the good stress performance of the inverted triangular pipe truss structure, the inverted triangular pipe truss structure is more and more widely applied to large-span and large-space structures. Generally, the C-shaped closed environment-friendly material yard side wall steel column is three columns, the length of each column is about 18m, the cross section of each roof truss beam is an inverted triangular truss, the three main pipes are welded into a space structure through 20 small cross rods and 80 inclined rods, the total span is 90m, the length of each roof truss beam is 58m, the elevation of one end of each roof truss beam is 16.5m after the roof truss beam is in place, the elevation of one end of each roof truss beam is 50m, and the inclination angle of each roof truss beam after the roof truss beam is in place in the air reaches 35 degrees after the roof truss beam is in place. Due to the fact that the large-span triangular pipe truss structure is complex in form, the weight of the truss structure is large, the construction environment is complex and changeable, and the influence of construction factors on internal force and deformation of the structure is not negligible.
At present, the more advanced mode of pipe truss roofing installation has the mounting method that slides, promotes the mounting method, because the concrete barricade height is higher in the middle of the stock ground, reinforced concrete volume is big, the construction cycle is long, and the design has one row of steel columns to be used for supporting the large-span pipe truss in the middle of the closed environmental protection stock ground concrete barricade of C type, from economic, safety and the actual effect aspect consideration, the track of mating formation or assembling in situ can't realize.
Disclosure of Invention
The invention aims to provide a method for installing a large-span inverted triangular pipe truss slope roof, which solves the problems of installation of an ultra-long steel structure, field assembly of an inverted triangular pipe truss, installation of a large-angle slope roof, high-altitude operation and the like.
In order to achieve the above object, the present invention is realized by:
an installation method of a large-span inverted triangular pipe truss sloping roof factory building; comprises that
Step 1, construction preparation;
step 2, supporting and installing steel columns and columns: sequentially mounting steel columns on two axes of the side wall by using an automobile crane, and pulling wind ropes after the steel columns are firmly fixed; when the strength grade of secondary grouting concrete in the cup foundation at the bottom of the steel column reaches 80%, sequentially mounting inter-column supports; when the strength of the middle retaining wall concrete reaches 100%, installing a steel column on the middle axis, and fixing the steel column through pre-embedded foundation bolts;
step 3, assembling the roof truss girder: the span of the roof truss girder is 45m, the roof truss girder is manufactured and transported to the site in three sections, and each section is marked; assembling a temporary jig frame on a roof truss beam assembling site, erecting a level gauge, measuring the elevation of the jig frame and adjusting the elevation to a proper position; placing roof truss beams in the workshop direction close to the edges of the steel columns in the workshop bay for assembly, wherein the top ends of the roof truss beams are at the rear, the bottom ends of the roof truss beams are at the front, and 2 temporary formworks are placed below each roof truss beam; when the second section of roof truss beam falls on the jig frame, the second section of roof truss beam needs to be aligned with the first section of roof truss beam, after the three main pipes are matched, the butt joint ports are firmly fixed by using temporary fixing pieces, and the third section of roof truss beam is in butt joint with the second section of roof truss beam; after the butt joint is finished, the overall geometric dimensions of the roof truss girder, including length, section size, camber and the like, are checked, welding can be carried out after the welding is accurate, the dimension of the roof truss girder and the quality of a welding seam are checked again after the welding is finished, and the roof truss girder can be installed after the roof truss girder is qualified;
step 4, roof truss beam installation: the roof truss girder is installed by adopting 1 100t crawler crane and 1 50t crawler crane, the steel wire rope of the 100t crawler crane is bound at the position of the 5 th small cross bar away from the top end, and the steel wire rope of the 50t crawler crane is bound at the position of the 5 th small cross bar away from the bottom end; when the roof truss beam leaves the jig, the 100t crawler crane starts to slowly approach to the middle retaining wall direction, the 50t crawler crane moves to the specified position, the crawler crane moves and hooks until the high end of the roof truss beam exceeds a steel column on the middle retaining wall, and the steel column is adjusted to be in place and then is welded and fixed;
step 5, roof secondary truss installation: after the roof truss beam is fixed, starting to install a roof secondary truss, hoisting the roof secondary truss by adopting a 100t crawler crane, and synchronously installing two sides of a middle retaining wall; 4 steel wire ropes are respectively tied on the secondary truss, the lifting points are symmetrical with the center of the roof truss beam, horizontal lifting is guaranteed in the hook lifting process of the crane, when the crane rises to a designed position, the component is fixed by mounting bolts, and after the connection is firm, the component can be unhooked and welded and fixed;
step 6, roof support and purline installation: a group of roof supports are connected into an X shape by a long pipe support and two short pipe supports, are fixed on an upper chord of a roof truss beam, are assembled into the X shape on the ground before hoisting, and then are welded with a middle connecting plate to avoid high-altitude welding. After welding is finished and inspection is qualified, hoisting can be carried out, four steel wire ropes are tied to the end parts of the supports during hoisting, and unhooking is convenient after installation is finished; the purlines are light in weight, the section form is H-shaped steel, the purlines can be hoisted in a mode of one hook and a plurality of pieces, 4 pairs of steel wire ropes with different lengths are used for one time, two steel wire ropes are used for binding one roof purline, and the purlines which are installed firstly are arranged at the lowest part according to the sequence of installation;
and 7, repeating the steps until the operation is finished.
The invention reasonably splits the large-span inverted triangular pipe truss roof truss girder, realizes accurate assembly through the developed jig frame, reduces high-altitude operation and reduces safety risks, and establishes a set of complete module assembly and high-altitude butt joint method for bearing, roof supports and purlins, thereby effectively improving the construction efficiency and ensuring the construction quality.
Drawings
Fig. 1 is a schematic sectional production view of a roof truss beam.
Fig. 2 is a schematic structural view of a roof truss beam assembling jig.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in fig. 1-2, a method for installing a large-span inverted triangular pipe truss sloping roof factory building; the method comprises the following steps: 1. construction preparation; 2. steel columns and supports among the columns are installed; 3. assembling roof truss girders; 4. installing a roof truss beam; 5. mounting a roof secondary truss; 6. roof supports and purlins.
The total construction direction is from one section of the factory building to the other end, and the construction is simultaneously carried out on two sides of the middle retaining wall, which comprises the following steps:
(1) construction preparation;
(2) steel columns and supports among the columns are installed;
the steel columns of the side wall of the stock yard are three columns, the length of each column is about 18m, the actual geometric size, the weight, the installation height, the site and other factors of the three columns are comprehensively considered, the steel columns on the two axes of the side wall are completely installed by using a truck crane, secondary grouting is conveniently performed in a unified mode, and pressure caused by the fact that components are stacked on the site when a roof is installed is also avoided.
Before the steel column is hoisted, each steel pipe of the steel column is painted with red paint to form a triangle, and a central line and a height line of +1.000m are marked, when the steel column is hoisted, the steel column base is close to the foundation, and the hoisting point of the steel column, the steel column base and the center of the foundation are located on an arc with the same hoisting radius of the crane. When the steel column is lifted, the crane arm of the crane rotates while lifting the hook, and when the column is turned to be vertical from horizontal, the crane lifts the steel column off the ground, rotates to the position above the foundation and falls into the cup opening, and takes place. And erecting a theodolite correction center, elevation and verticality, confirming that the correction is within an error range, and recording data. After the correction is finished, steel wedges are arranged in four directions of the front direction, the rear direction, the left direction and the right direction of each steel pipe, the steel columns are fixed in the cup opening foundation, and wind-holding ropes are pulled after the steel columns are firmly fixed. And then the rigging is dismantled by the ladder.
The steel column on the middle axis is designed into a single-pipe column and fixed on the top surface of the middle retaining wall, the steel column is fixed through the embedded foundation bolts, and when the strength of the concrete of the middle retaining wall reaches 100%, the steel column on the middle axis can be installed. A temporary operation platform and a vertical ladder are installed on the top of the column before installation, the operation platform is used when workers go to weld the top of the column, and the vertical ladder is used as a passage for the workers to go up and down.
When the strength level of secondary grouting concrete in a cup foundation at the bottom of a steel column reaches 80%, the inter-column support can be installed, the inter-column support is lifted by a crane, the inter-column support reaches a designed position by rotating a crane arm, bolt holes in the inter-column support are aligned with bolt holes in a steel column connecting plate, and the inter-column support is firmly connected with the steel column by using installation bolts.
(3) Assembling a pipe truss roof truss beam;
the cross section of the pipe truss roof truss beam is in an inverted triangle shape, three main pipes are welded into a space structure through 20 small cross rods and 80 inclined rods, the distance between every two small cross rods is almost the same, the span between axes is 45m, the length of a single roof truss beam reaches 58m, the elevation of one end of the roof truss beam in place is 16.5m, the elevation of one end of the roof truss beam in place is 50m, and the backward inclination angle in place in air installation reaches 35 degrees.
Each roof truss beam is integrally manufactured in a processing plant, is taken out of the processing plant in sections, is transported to the site in three sections, is marked on each section, and is transported to the site in a complete set according to the installation sequence. Before assembly, the field is leveled, gravels are paved, and a road roller is used for repeatedly rolling and compacting. And placing the assembly jig after the field is leveled.
Because the component overlength, choose earlier to be close to the steel column limit in striding and put the roof truss roof beam in the same direction of the factory building and assemble, roof truss roof end in the rear, roof truss roof beam bottom in the front, every section roof truss roof beam below need put two interim bed-jigs, calculates the locating place according to length, then puts the bed-jig on the accurate position, then erects the surveyor, measures the bed-jig elevation, and low bed-jig top backing steel sheet guarantees that six bed-jigs are in same horizontal plane.
The first section of the roof truss beam is slowly hoisted by a crane, the hook lifting is stopped when the first section of the roof truss beam is 1m away from the ground, the suspension arm is slowly rotated after the direction of the roof truss beam is adjusted and the direction is accurate through the hemp rope bound at the end of the roof truss beam, so that the roof truss beam is positioned right above the moulding bed, and then the hook is dropped, so that the roof truss beam laterally lies on the moulding bed. When the second section of roof truss beam falls on the jig frame, the second section of roof truss beam needs to be aligned with the first section of roof truss beam, after the three main pipes are well aligned, the butt joint ports are firmly fixed by the temporary fixing pieces, and the third section of roof truss beam is in butt joint with the second section of roof truss beam.
And after the butt joint is finished, the overall geometric dimensions of the roof truss beam, including length, section size, camber and the like, are checked. The welding can be carried out after the welding is accurate, the size of the roof truss beam and the quality of the welding line can be checked again after the welding is finished, and the roof truss beam can be hoisted after the roof truss beam is qualified.
(4) Installing a roof truss beam;
two crawler cranes are adopted for lifting the roof truss girder, and a 100t crawler crane and a 50t crawler crane are selected as hoisting machinery according to the weight, the appearance size and the in-place inclination angle of the roof truss girder. Each crane is provided with two steel wire ropes, the steel wire rope of the crawler crane of 100t is bound at the position of the small cross bar 5 from the top end, and the steel wire rope of the crawler crane of 50t is bound at the position of the small cross bar 5 from the bottom end.
The method comprises the following steps that a 100t crawler crane is located at the position close to the top end of a roof truss beam, a 50t crawler crane is located at the position close to the bottom end of the roof truss beam, after steel wire ropes are bound, the two crawler cranes are hooked at the same time, after the roof truss beam leaves a jig, the 100t crawler crane starts to slowly approach towards a middle retaining wall, the 50t crawler crane moves towards an appointed position, the crawler cranes move while being hooked, and when the two crawler cranes reach the appointed position, the crawler cranes stop moving. And stopping lifting the hook when the 50t crawler crane is lifted to a certain height, continuing lifting the hook by the 100t crawler crane, and stopping lifting the hook when the high end of the roof truss girder exceeds the steel column on the intermediate retaining wall.
Ground personnel enable the roof truss girder to reach the position right above the installation position by pulling the hemp ropes bound on the roof truss girder, then the crawler crane falls the hook to enable the roof truss girder to reach the design position, and after the ground personnel are in place, workers start to fix the roof truss girder.
(5) Roof secondary truss installation
After the roof truss beam is fixed, the roof secondary truss starts to be installed, and the roof secondary truss is hoisted by adopting a 100t crawler crane. Four steel wire ropes are tied on the secondary truss respectively, the hoisting points are symmetrical with the center of the roof truss beam, horizontal hoisting is guaranteed in the process of hoisting the hook by the crane, when the crane ascends to the designed position, the component is fixed by the mounting bolt, the hook can be taken off after the connection is firm, and then an electric welder is arranged to carry out high-altitude welding.
The roof truss girders on two sides of the main retaining wall are installed synchronously, and the stability and the safety of the roof can be greatly ensured.
(6) Roof support and purlin installation
A group of roof supports are connected into an X shape by a long pipe support and two short pipe supports, the X shape is fixed on an upper chord of a roof truss beam, the X shape is assembled on the ground before hoisting, a pattern is put on the ground before assembling according to a design drawing, then assembling is carried out, the support length and the support angle are ensured to be within a standard error allowable range, and then a middle connecting plate is welded to avoid high-altitude welding. After welding is finished and inspection is qualified, hoisting can be carried out, four steel wire ropes are tied to the end parts of the supports during hoisting, and the hooks can be conveniently unhooked after installation is finished.
Because the purlin weight is lighter, and the cross-sectional form is H shaped steel, can adopt a hook mode of many to hoist during hoist and mount, once with 4 pairs of wire ropes of different length, every wire rope is two, ties up a roofing purlin, according to the precedence of installation, the purlin of adorning earlier is in the below to analogize with this.
Claims (1)
1. An installation method of a large-span inverted triangular pipe truss sloping roof factory building; the method is characterized in that: comprises that
Step 1, construction preparation;
step 2, supporting and installing steel columns and columns: sequentially mounting steel columns on two axes of the side wall by using an automobile crane, and pulling wind ropes after the steel columns are firmly fixed; when the strength grade of secondary grouting concrete in the cup foundation at the bottom of the steel column reaches 80%, sequentially mounting inter-column supports; when the strength of the middle retaining wall concrete reaches 100%, installing a steel column on the middle axis, and fixing the steel column through pre-embedded foundation bolts;
step 3, assembling the roof truss girder: the span of the roof truss girder is 45m, the roof truss girder is manufactured and transported to the site in three sections, and each section is marked; assembling a temporary jig frame on a roof truss beam assembling site, erecting a level gauge, measuring the elevation of the jig frame and adjusting the elevation to a proper position; placing roof truss beams in the workshop direction close to the edges of the steel columns in the workshop bay for assembly, wherein the top ends of the roof truss beams are at the rear, the bottom ends of the roof truss beams are at the front, and 2 temporary formworks are placed below each roof truss beam; when the second section of roof truss beam falls on the jig frame, the second section of roof truss beam needs to be aligned with the first section of roof truss beam, after the three main pipes are matched, the butt joint ports are firmly fixed by using temporary fixing pieces, and the third section of roof truss beam is in butt joint with the second section of roof truss beam; after the butt joint is finished, the overall geometric dimensions of the roof truss girder, including length, section size, camber and the like, are checked, welding can be carried out after the welding is accurate, the dimension of the roof truss girder and the quality of a welding seam are checked again after the welding is finished, and the roof truss girder can be installed after the roof truss girder is qualified;
step 4, roof truss beam installation: the roof truss girder is installed by adopting 1 100t crawler crane and 1 50t crawler crane, the steel wire rope of the 100t crawler crane is bound at the position of the 5 th small cross bar away from the top end, and the steel wire rope of the 50t crawler crane is bound at the position of the 5 th small cross bar away from the bottom end; when the roof truss beam leaves the jig, the 100t crawler crane starts to slowly approach to the middle retaining wall direction, the 50t crawler crane moves to the specified position, the crawler crane moves and hooks until the high end of the roof truss beam exceeds a steel column on the middle retaining wall, and the steel column is adjusted to be in place and then is welded and fixed;
step 5, roof secondary truss installation: after the roof truss beam is fixed, starting to install a roof secondary truss, hoisting the roof secondary truss by adopting a 100t crawler crane, and synchronously installing two sides of a middle retaining wall; 4 steel wire ropes are respectively tied on the secondary truss, the lifting points are symmetrical with the center of the roof truss beam, horizontal lifting is guaranteed in the hook lifting process of the crane, when the crane rises to a designed position, the component is fixed by mounting bolts, and after the connection is firm, the component can be unhooked and welded and fixed;
step 6, roof support and purline installation: the group of roof supports are connected into an X shape by a long pipe support and two short pipe supports, are fixed on an upper chord of a roof truss beam, are assembled into the X shape on the ground before hoisting, and are welded with a middle connecting plate to avoid high-altitude welding;
after welding is finished and inspection is qualified, hoisting can be carried out, four steel wire ropes are tied to the end parts of the supports during hoisting, and unhooking is convenient after installation is finished; the purlines are light in weight, the section form is H-shaped steel, the purlines can be hoisted in a mode of one hook and a plurality of pieces, 4 pairs of steel wire ropes with different lengths are used for one time, two steel wire ropes are used for binding one roof purline, and the purlines which are installed firstly are arranged at the lowest part according to the sequence of installation;
and 7, repeating the steps until the operation is finished.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366410.3A CN113585828A (en) | 2020-04-30 | 2020-04-30 | Installation method of large-span inverted triangular pipe truss slope roof workshop |
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| CN202010366410.3A CN113585828A (en) | 2020-04-30 | 2020-04-30 | Installation method of large-span inverted triangular pipe truss slope roof workshop |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458050A (en) * | 2021-12-23 | 2022-05-10 | 中国华冶科工集团有限公司 | Protective dismantling method for roof of casting house |
| CN114812498A (en) * | 2022-04-20 | 2022-07-29 | 中铁一局集团有限公司 | Roadbed filling settlement observation rod height-connection anti-rolling structure and method |
| CN114961291A (en) * | 2022-05-23 | 2022-08-30 | 中国十七冶集团有限公司 | Modularized installation method for dust removal ventilation shaft in steelmaking environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777047A (en) * | 2012-08-22 | 2012-11-14 | 河北二十冶工程技术有限公司 | Assembling and splicing installation method of large-span tube-truss roof beam |
| CN108612317A (en) * | 2018-05-24 | 2018-10-02 | 中国二十冶集团有限公司 | A kind of band waves column type gate-type combination steel frame construction installation method |
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2020
- 2020-04-30 CN CN202010366410.3A patent/CN113585828A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777047A (en) * | 2012-08-22 | 2012-11-14 | 河北二十冶工程技术有限公司 | Assembling and splicing installation method of large-span tube-truss roof beam |
| CN108612317A (en) * | 2018-05-24 | 2018-10-02 | 中国二十冶集团有限公司 | A kind of band waves column type gate-type combination steel frame construction installation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458050A (en) * | 2021-12-23 | 2022-05-10 | 中国华冶科工集团有限公司 | Protective dismantling method for roof of casting house |
| CN114458050B (en) * | 2021-12-23 | 2024-04-09 | 中国华冶科工集团有限公司 | Cast house roof protective dismantling method |
| CN114812498A (en) * | 2022-04-20 | 2022-07-29 | 中铁一局集团有限公司 | Roadbed filling settlement observation rod height-connection anti-rolling structure and method |
| CN114961291A (en) * | 2022-05-23 | 2022-08-30 | 中国十七冶集团有限公司 | Modularized installation method for dust removal ventilation shaft in steelmaking environment |
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Application publication date: 20211102 |