CN115110640B - Method for installing circular ring steel truss of experimental building - Google Patents
Method for installing circular ring steel truss of experimental building Download PDFInfo
- Publication number
- CN115110640B CN115110640B CN202210419784.6A CN202210419784A CN115110640B CN 115110640 B CN115110640 B CN 115110640B CN 202210419784 A CN202210419784 A CN 202210419784A CN 115110640 B CN115110640 B CN 115110640B
- Authority
- CN
- China
- Prior art keywords
- truss
- installing
- outer ring
- inner ring
- main
- 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
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
- E04B1/3404—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability supported by masts or tower-like structures
-
- 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
Abstract
The invention discloses a method for installing an experimental building circular ring steel truss, which comprises the following steps: step 1: mounting a support column; step 2: installing a main truss: firstly, hoisting a lower chord truss in place, hoisting an upper chord truss in place, and then installing a diagonal web member; and step 3: installing an inner ring truss: firstly hoisting a lower inner ring truss in place, hoisting an upper inner ring truss in place, and then installing a diagonal web member; and 4, step 4: mounting a steel beam; and 5: installing an outer ring truss: hoisting one hoisting unit of the lower outer ring truss in place, then temporarily connecting a main beam on the lower outer ring truss with the main truss, and hoisting the other hoisting unit; hoisting an upper outer ring truss, and temporarily connecting the upper outer ring truss with the short column, the main beam on the upper outer ring truss and the main truss; and finally, installing a diagonal web member between the upper outer ring truss and the lower outer ring truss and installing a secondary beam between the main truss and the outer ring truss. The annular steel frame is segmented, stripped and installed in blocks by combining integral lifting and high-altitude bulk loading, so that the high-altitude assembling difficulty is reduced.
Description
Technical Field
The invention relates to the technical field of steel truss installation, in particular to an installation method of an experimental building circular ring steel truss.
Background
In recent years, with the rapid development of economy and science and technology in China, the structural adjustment and technical transformation of the building industry are accelerated, and people gradually put forward higher requirements on buildings such as excellent performance, beautiful shape, large covering space and the like; the large-scale complex steel structure engineering is continuously generated along with the development of national economy and the improvement of the technical level of the building field, and the application and the development of a large-span space structure are greatly promoted.
At present, the whole experiment building is of a circular ring steel truss structure with the diameter of 47m, the elevation of the upper chord top of the truss is 13.75m, the elevation of the lower chord top of the truss is 8.45m, and the net height of the truss is 5.3m. The truss is composed of a main truss, an inner ring truss, an outer ring truss and a connecting steel beam, the main beam is a box-shaped member, the secondary beam is an H-shaped member, and the connecting mode is rigid bolt welding. The construction of the steel structure usually adopts ground assembly, integral lifting or a high-altitude bulk mode, and during integral lifting, because the dead weight of the steel structure is larger and difficult to control, the problems of large lifting construction difficulty and high lifting and mounting requirements exist, and the requirement on the tonnage of lifting equipment is high; if the split high-altitude bulk loading is adopted, not only is the high-altitude assembling and welding workload large, but also the field mechanical equipment is difficult to meet the hoisting requirement, and the required high-altitude assembling jig frame is difficult to erect, the construction difficulty is large, the safety and quality of the field installation of the steel structure and the control of the construction period are not facilitated, and great safety and quality risks exist.
Disclosure of Invention
The invention provides a method for installing an annular steel truss of an experimental building, which combines integral lifting with high-altitude bulk loading, and carries out sectional, strip-dividing and block-dividing installation on an annular steel frame, thereby reducing the high-altitude assembly difficulty and the requirement on the tonnage of lifting equipment.
The technical problem to be solved is: the existing mode of integral lifting or high-altitude bulk loading has high construction difficulty and difficult quality control.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a method for installing an experimental building circular ring steel truss, which comprises the following steps of:
step 1: mounting a support column: arranging a supporting column at the position of the truss breakpoint;
step 2: installing a main truss: each main truss is divided into an upper chord truss, a lower chord truss, an inclined web member and a vertical web member, wherein the vertical web member is divided into two sections, one section is fixedly arranged on the upper chord truss, and the other section is fixedly arranged on the lower chord truss; firstly hoisting a lower chord truss in place, then welding and fixing the lower chord truss and a structural column, hoisting an upper chord truss in place, then installing a diagonal web member, and welding the upper chord truss and the diagonal web member after the whole truss is corrected; installing the rest trusses according to the steps;
and step 3: installing an inner ring truss: segmenting each inner ring truss into an upper inner ring truss, a lower inner ring truss, an inclined web member and a vertical web member, wherein the vertical web member is divided into two sections, one section is fixedly arranged on the upper inner ring truss, and the other section is fixedly arranged on the lower inner ring truss; hoisting a lower inner ring truss in place, welding and fixing the lower inner ring truss and a main truss, hoisting an upper inner ring truss in place, mounting a diagonal web member, and welding the upper inner ring truss and the diagonal web member after the correction of the whole inner ring truss is finished; installing the rest inner ring truss according to the steps;
and 4, step 4: installing the steel beam: after the inner ring truss is installed, installing a main steel beam and a secondary steel beam between the inner ring truss and the main truss;
and 5: installing an outer ring truss: each outer ring truss is segmented into an upper outer ring truss, a lower outer ring truss, diagonal web members and short columns, and the lower outer ring truss is divided into two hoisting units; hoisting one hoisting unit of the lower outer ring truss in place, then temporarily connecting a main beam on the lower outer ring truss with the main truss, hoisting the other hoisting unit, and then welding the lower outer ring truss after positioning;
installing a short column on the lower outer ring truss, hoisting an upper outer ring truss, temporarily connecting the upper outer ring truss with the short column, and a main beam and a main truss on the upper outer ring truss, and welding after positioning; finally, installing a diagonal web member between the upper outer ring truss and the lower outer ring truss and a secondary beam between the main truss and the outer ring truss, correcting and welding; and (5) installing the rest outer ring truss according to the steps.
The invention relates to a method for installing an annular steel truss of an experimental building, which comprises the following steps of further pouring a concrete layer on the ground in step 1, pre-burying a steel plate in the concrete layer, fixedly connecting a support column to the steel plate, arranging an inclined strut at the lower end of the support column, and pulling a cable rope at the upper end.
The invention relates to a method for installing an annular steel truss of an experimental building, which comprises the following steps of 1, arranging a support column below the projections of a main truss and an inner ring truss, dismantling the support column after the main truss and the inner ring truss are installed, and installing the support column below the projection of an outer ring truss.
The invention relates to a method for installing an annular steel truss of an experimental building.
The invention relates to a method for installing a circular ring steel truss of an experimental building.
The invention relates to a method for installing an annular steel truss of an experimental building.
The invention relates to a method for installing a circular ring steel truss of an experimental building, which is further characterized in that when the installation position is corrected in the steps 2, 3 and 5, a truck crane is matched with a jack to correct the installation position.
The invention relates to a method for installing an annular steel truss of an experimental building.
Compared with the prior art, the invention has the following beneficial effects:
1. the method combines integral lifting and high-altitude bulk loading, and carries out segmentation, stripping and block mounting on the annular steel frame, thereby reducing the high-altitude assembly difficulty and the requirement on the tonnage of lifting equipment, not only avoiding the problems that the integral lifting is difficult to control due to larger dead weight of a steel structure, has high lifting construction difficulty, high lifting and mounting requirements and high requirement on the tonnage of the lifting equipment, but also avoiding the problems that the high-altitude bulk loading is large, the workload is large and the construction difficulty is large;
2. according to the method, the main truss is constructed firstly, the inner ring truss and the outer ring truss are constructed secondly, and through reasonable construction steps, the stress of the steel structure in construction is clear, the stress and the structural stability in the steel structure construction are ensured, and the deformation control of the steel structure is improved;
3. the outer ring truss is divided into two hoisting units, and the main beam and the main truss are connected immediately after the hoisting units are hoisted in place, so that the outer ring truss is prevented from turning on one side under the side turning bending moment, and the installation stability of the outer ring truss is ensured.
The invention X is further illustrated in the following description with reference to the drawings.
Drawings
FIG. 1 is a schematic view of a support post arrangement according to the present invention;
FIG. 2 is a schematic view of a support post mounting structure according to the present invention;
FIG. 3 is a schematic view of a main truss segment structure according to the present invention;
FIG. 4 is a schematic view of a hoisting structure of each truss according to the present invention;
FIG. 5 is a schematic view of the main truss installation structure of the present invention;
FIG. 6 is a schematic sectional view of an inner ring truss structure according to the present invention;
FIG. 7 is a schematic view of an inner ring truss installation structure according to the present invention;
FIG. 8 is a schematic view of the present invention showing the structure of the primary and secondary steel beams;
FIG. 9 is a schematic view of an outer ring truss structure according to the present invention;
FIG. 10 is a schematic sectional view of an outer ring truss structure according to the present invention;
FIG. 11 is a schematic view of a completed installation structure of a single outer ring truss according to the present invention;
FIG. 12 is a schematic view of a secondary beam mounting structure of the present invention;
FIG. 13 is a schematic view of the steel truss installation structure of the present invention;
fig. 14 is a schematic structural view of the connecting plate of the present invention.
Reference numerals are as follows:
1. a support pillar; 2. a main truss; 21. an upper chord truss; 22. a lower chord truss; 23. a diagonal web member; 24. a vertical web member; 3. an inner ring truss; 31. an upper inner ring truss; 32. a lower inner ring truss; 33. a main steel beam; 34. a secondary steel beam; 4. a structural column; 5. an outer ring truss; 51. an upper outer ring truss; 52. a lower outer ring truss; 53. a short column; 54. a main beam; 55. a secondary beam; 6. a connecting plate.
Detailed Description
With reference to fig. 1 to 14, the invention relates to a method for installing an experimental building circular ring steel truss, which comprises the following steps:
step 1: the support column 1 is installed: utilize the truck crane to set up support column 1 in main truss 2, 3 breakpoint positions of inner ring truss below, specifically, pour concrete layer on ground, pre-buried steel sheet in the concrete layer, support column 1 fixed connection sets up the bracing in support column 1 lower part at the steel sheet, and the cable wind rope is established in upper portion drawing, guarantees support column 1's stability.
Step 2: installing a main truss 2: each main truss 2 is divided into an upper chord truss 21, a lower chord truss 22, a diagonal web member 23 and a vertical web member 24, wherein the vertical web member 24 is divided into two sections, one section is fixedly arranged on the upper chord truss 21, and the other section is fixedly arranged on the lower chord truss 22.
Specifically, the lower chord truss 22 is assembled into a whole on the ground, hoisted in place by using a truck crane, and the lower chord truss 22 and the structural column 4 are welded and fixed after correction. Then, the upper chord truss 21 is assembled into a whole on the ground, and is hoisted in place by using a truck crane, after the upper chord truss 21 is in place, the connecting plate 6 is adopted to temporarily connect the upper chord truss 21 with the structural column 4, the upper chord truss 21 and the lower chord truss 22, then the truck crane is used to hoist the diagonal web members 23, and after the correction of the whole truss is completed, the upper chord steel frame and the diagonal web members 23 are welded; the remaining two main trusses 2 are installed according to the above procedure.
And 3, step 3: and (3) installing an inner ring truss: each inner ring truss 3 is divided into an upper inner ring truss 31, a lower inner ring truss 32, an inclined web member 23 and a vertical web member 24, the vertical web member 24 is divided into two sections, one section is fixedly arranged on the upper inner ring truss 31, and the other section is fixedly arranged on the lower inner ring truss 32; the lower inner ring truss 32 is firstly hoisted in place by using a truck crane, and the lower inner ring truss 32 and the lower chord truss 22 are welded and fixed after correction. And hoisting the upper inner ring truss 31 in place by using a truck crane, temporarily connecting the upper inner ring truss 31 with the lower inner ring truss 32, hoisting the diagonal members 23 by using the truck crane, welding the upper inner ring truss 31 and the diagonal members 23 after the correction of the whole inner ring truss 3 is finished, and installing the remaining two inner ring trusses 3 according to the steps.
And 4, step 4: installing a steel beam: after the inner ring truss 3 is installed, the main steel beam 33 and the secondary steel beam 34 between the inner ring truss 3 and the main truss 2 are hoisted.
And 5: and (3) installing an outer ring truss 5: each outer ring truss 5 is divided into an upper outer ring truss 51, a lower outer ring truss 52, a diagonal web member 23 and a short column 53, and the lower outer ring truss 52 is divided into a left hoisting unit and a right hoisting unit. After the main truss 2 and the inner ring truss 3 are installed, the supporting column 1 below the main truss is detached, the supporting column 1 is installed below the projection of the outer ring truss 5, one hoisting unit of the lower outer ring truss 52 is hoisted in place by using a truck crane, then the main beam 54 on the lower outer ring truss 52 is temporarily connected with the main truss 2, the lower outer ring truss 52 is temporarily connected with the structural column 4, the other hoisting unit is hoisted, and then the lower outer ring truss 52 is welded after being positioned. Because the outer ring is arc-shaped, side turning bending moment exists, and the outer ring truss 5 is restrained by installing the main beam 54 between the main truss 2 and the outer ring truss 5.
After the lower outer ring truss 52 is installed, the short column 53 is installed on the lower outer ring truss 52, the short column 53 and the lower outer ring truss 52 are temporarily connected through the connecting plate 6, and the installation position is corrected. And then hoisting the upper outer ring truss 51 by using a truck crane, temporarily connecting the upper outer ring truss 51 with the short column 53, the main beam 54 on the upper outer ring truss 51 and the main truss 2, positioning and welding.
And (3) installing the diagonal web members 23 between the upper outer ring truss 51 and the lower outer ring truss 52, then installing the secondary beam 55 between the main truss 2 and the outer ring truss 5, correcting and welding, and installing the rest outer ring truss 5 according to the steps. And after the integral installation of the steel truss is finished, joint paint repair is carried out.
The temporary connections among the main truss 2, the inner ring truss 3 and the outer ring truss 5 are all connected by adopting a connecting plate 6. When the truss node is welded, the fire receiving basin is arranged at the node, so that accidents caused by spark falling are prevented.
And (5) when the installation position of the steel structure is corrected in the steps 2, 3 and 5, correcting by using the truck crane and a jack.
Before construction, modeling is carried out on the main truss 2, the inner ring truss 3 and the outer ring truss 5, finite element analysis is carried out, and pre-arching or lower support points are adopted according to a calculation result to carry out down-warping compensation, so that the installation accuracy and deformation control of the steel truss are guaranteed.
This application combines bulk lifting and high altitude, carries out segmentation, slitting, piecemeal installation to annular steelframe, has reduced the high altitude equipment degree of difficulty and to the requirement of lifting means tonnage, has both avoided bulk lifting because of the steel construction dead weight is great, and is difficult to control, has that the hoist and mount construction degree of difficulty is big, promote with the installation requirement height and to the problem that the lifting means tonnage required height, has avoided the high altitude to be in bulk again, and the work load is big, the construction degree of difficulty is big problem.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (8)
1. The method for installing the ring steel truss of the experimental building is characterized by comprising the following steps of:
step 1: mounting a support column: arranging a support column (1) at the position of a truss breakpoint;
step 2: installing a main truss: each main truss (2) is divided into an upper chord truss (21), a lower chord truss (22), an inclined web member (23) and a vertical web member (24), the vertical web member (24) is divided into two sections, one section is fixedly arranged on the upper chord truss (21), and the other section is fixedly arranged on the lower chord truss (22); firstly hoisting a lower chord truss (22) in place, then welding and fixing the lower chord truss (22) and the structural column (4), hoisting an upper chord truss (21) in place, then installing a diagonal web member (23), and welding the upper chord truss (21) and the diagonal web member (23) after the whole truss is corrected; installing the rest main trusses according to the steps;
and step 3: installing an inner ring truss: each inner ring truss (3) is segmented into an upper inner ring truss (31), a lower inner ring truss (32), an inclined web member (23) and a vertical web member (24), the vertical web member (24) is divided into two sections, one section is fixedly arranged on the upper inner ring truss (31), and the other section is fixedly arranged on the lower inner ring truss (32); hoisting a lower inner ring truss (32) in place, welding and fixing the lower inner ring truss (32) and a main truss (2), hoisting an upper inner ring truss (31) in place, installing a diagonal web member (23), and welding the upper inner ring truss (31) and the diagonal web member (23) after the correction of the whole inner ring truss (3) is finished; installing the rest inner ring truss (3) according to the steps;
and 4, step 4: installing a steel beam: after the inner ring truss (3) is installed, a main steel beam (33) and a secondary steel beam (34) between the inner ring truss (3) and the main truss (2) are installed;
and 5: installing an outer ring truss: each outer ring truss (5) is segmented into an upper outer ring truss (51), a lower outer ring truss (52), a diagonal web member (23) and a short column (53), and the lower outer ring truss (52) is divided into two hoisting units; firstly hoisting one hoisting unit of the lower outer ring truss (52) in place, then temporarily connecting a main beam (54) on the lower outer ring truss (52) with the main truss (2), hoisting the other hoisting unit, and then welding the lower outer ring truss (52) after positioning;
mounting a short column (53) on a lower outer ring truss (52), hoisting an upper outer ring truss (51), temporarily connecting the upper outer ring truss (51) with the short column (53), and a main beam (54) on the upper outer ring truss (51) with a main truss (2), and welding after positioning; finally, installing an inclined web member (23) between the upper outer ring truss (51) and the lower outer ring truss (52) and a secondary beam (55) between the main truss (2) and the outer ring truss (5), and correcting and welding; and (4) installing the rest outer ring truss (5) according to the steps.
2. The method for installing the ring steel truss of the experimental building according to claim 1, wherein the method comprises the following steps: in the step 1, a concrete layer is poured on the ground, a steel plate is embedded in the concrete layer, the support column (1) is fixedly connected to the steel plate, an inclined strut is arranged at the lower end of the support column (1), and a cable wind rope is pulled at the upper end of the support column.
3. The method for installing the ring steel truss of the experimental building according to claim 1, wherein the method comprises the following steps: in the step 1, firstly, the support columns (1) are arranged below the projections of the main truss (2) and the inner ring truss (3), after the main truss (2) and the inner ring truss (3) are installed, the support columns (1) are detached, and the support columns (1) are installed below the projection of the outer ring truss (5).
4. The method for installing the ring steel truss of the experimental building according to claim 1, wherein the method comprises the following steps: the temporary connection among the main truss (2), the inner ring truss (3) and the outer ring truss (5) is realized through the connecting plates (6).
5. The method for installing the ring steel truss of the experimental building according to claim 1, wherein the method comprises the following steps: and (4) after the integral installation of the steel truss is finished, joint paint repair is carried out.
6. The method for installing the ring steel truss of the experimental building according to claim 1, wherein the method comprises the following steps: when the steel truss node is welded, a fire pan is arranged at the node.
7. The method for installing the ring steel truss of the experimental building according to claim 1, wherein the method comprises the following steps: and (5) when the installation position is corrected in the steps 2, 3 and 5, correcting by using the truck crane and a jack.
8. The method for installing the ring steel truss of the experimental building according to claim 1, wherein the method comprises the following steps: finite element analysis is carried out on the main truss (2), the inner ring truss (3) and the outer ring truss (5), and pre-arching or lower support points are adopted for down-warping compensation according to the calculation result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210419784.6A CN115110640B (en) | 2022-04-21 | 2022-04-21 | Method for installing circular ring steel truss of experimental building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210419784.6A CN115110640B (en) | 2022-04-21 | 2022-04-21 | Method for installing circular ring steel truss of experimental building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115110640A CN115110640A (en) | 2022-09-27 |
| CN115110640B true CN115110640B (en) | 2023-04-04 |
Family
ID=83324496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210419784.6A Active CN115110640B (en) | 2022-04-21 | 2022-04-21 | Method for installing circular ring steel truss of experimental building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115110640B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030136071A1 (en) * | 2002-01-23 | 2003-07-24 | Kobayashi Herbert S. | Reinforced concrete slab |
| CN105780925B (en) * | 2016-04-05 | 2018-08-10 | 中建一局钢结构工程有限公司 | A kind of truss-hanging combined system construction method of installation |
| CN112081243B (en) * | 2020-08-05 | 2021-12-28 | 上海建工集团股份有限公司 | Outrigger truss structure |
| CN112482577B (en) * | 2020-11-18 | 2022-03-15 | 陕西建工集团股份有限公司 | Large-span space chord supporting wheel spoke type truss structure system and construction method |
| CN113982281A (en) * | 2021-09-22 | 2022-01-28 | 中国建筑第二工程局有限公司 | Super-tonnage space truss lifting and reinforcing structure and construction method thereof |
-
2022
- 2022-04-21 CN CN202210419784.6A patent/CN115110640B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115110640A (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111042539B (en) | Single-point support installation construction method for large-span steel structure truss | |
| CN206692235U (en) | A kind of steel structure dome lifts by crane erecting device | |
| CN111827759A (en) | Bailey steel truss supporting device for shallow round bin construction and construction method thereof | |
| CN112695952B (en) | Building roof truss support structure and construction method | |
| CN114482280A (en) | Hexagonal-section assembled annular supporting system and installation method thereof | |
| CN109653517B (en) | Multidirectional unloading system and construction method for assembling steel corridor by using same | |
| CN217150619U (en) | Annular steel structure mounting structure | |
| CN113914223A (en) | High-pier arc-shaped upper cross beam light-weight bracket system and mounting method thereof | |
| CN117569609A (en) | Integral hoisting construction method for large-span beam string | |
| CN109989590B (en) | Auxiliary fixing device for mounting roof overlong steel beam and hoisting method of steel beam | |
| CN115110640B (en) | Method for installing circular ring steel truss of experimental building | |
| CN114837483B (en) | High-low span portal steel frame building structure and construction process thereof | |
| CN111648597A (en) | Silo hangs a formula steel truss bracket bearing structure | |
| CN111188278A (en) | Jig frame structure, jig frame assembly and construction method | |
| CN215670948U (en) | Steel cable truss device for dome structure construction | |
| CN216891987U (en) | Special-shaped steel ladle concrete upper tower column | |
| CN212247877U (en) | Main tower inner formword and maintenance platform integrated device | |
| CN108797350B (en) | Tower column inner and outer stiff skeleton device and construction method thereof | |
| CN220167140U (en) | Large-span girder steel installation deformation control auxiliary device | |
| CN216640271U (en) | High mound arc entablature light weight volume support system | |
| CN115637873B (en) | Horizontal rigid supporting structure for variable-diameter floors | |
| CN215287772U (en) | Tower crane conversion connecting system | |
| CN219430545U (en) | Operation platform for utilizing stiffness framework for tower column head section | |
| CN116837967A (en) | Construction method of large-span cable-stayed truss structure | |
| CN115977313B (en) | Large-span steel truss structure and hoisting method |
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 |