CN112627355B - Petal-shaped large-span roof truss assembling method - Google Patents
Petal-shaped large-span roof truss assembling method Download PDFInfo
- Publication number
- CN112627355B CN112627355B CN202011435560.1A CN202011435560A CN112627355B CN 112627355 B CN112627355 B CN 112627355B CN 202011435560 A CN202011435560 A CN 202011435560A CN 112627355 B CN112627355 B CN 112627355B
- Authority
- CN
- China
- Prior art keywords
- truss
- linear
- crane
- manufacturing
- assembling
- 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
- E04B1/35—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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention aims to provide a method for splicing petal-shaped large-span roof trusses, and provides a method for splicing large-span steel trusses, wherein a truss ground assembly operation platform is manufactured, so that the risk degree of overhead operation is reduced, and the splicing quality and speed are improved; the method for integrally lifting and hoisting the two crawler cranes by splicing the single-span truss on site to form a whole ensures that the member is stressed reasonably in the lifting and moving processes, and the member is stably, accurately and quickly placed in place.
Description
Technical Field
The invention relates to the field of building construction and installation, in particular to a petal-shaped large-span roof truss assembling method.
Background
In industrial and commercial building engineering in China, steel structure roofs are widely applied, the times are developed, the designed trusses are higher and higher, the span is larger and larger, the weight is increased, and the splicing technology is higher and higher. At present, a 4-petal-shaped single-layer exhibition hall is built, a single-layer large-span steel structure system is arranged at the upper part of the exhibition hall, a steel pipe column and a one-way triangular truss structure are adopted, an upper chord structure is used for slope finding, 32 pipe trusses are used in total, the maximum span is 75 meters, the weight is as high as 37 tons, and the exhibition hall needs to be installed on the steel pipe column with the height of more than 20 meters. The main problems are that the truss has large span, large volume, high weight, large and difficult manufacturing amount and more high-altitude operations, and the conventional construction method can not meet the requirements of structural performance and modeling.
Disclosure of Invention
The invention aims to provide a method for splicing petal-shaped large-span roof trusses, and provides a method for splicing large-span steel trusses, wherein a truss ground assembly operation platform is manufactured, so that the risk degree of overhead operation is reduced, and the splicing quality and speed are improved; the method for integrally lifting and hoisting the two crawler cranes by splicing the single-span truss on site to form a whole ensures that the member is stressed reasonably in the lifting and moving processes, and the member is stably, accurately and quickly placed in place.
In order to achieve the purpose, the invention adopts the following technical scheme:
the assembling method of the petal-shaped large-span roof truss comprises the following steps:
1) assembling truss ground operation tables, and manufacturing two groups of operation tables, wherein one group of operation tables are arranged along the shape and the hoisting position of the petal annular truss and are used for assembling the annular truss; the group of operation platforms are linear operation platforms, are transversely arranged in the middle of the petals and are used for splicing the linear trusses, and a crane walking vacancy is reserved in each linear operation platform;
2) manufacturing a foundation beam along the petal ring shape, splicing the manufactured ring-shaped truss to the upper end of the foundation beam, and not manufacturing the foundation beam at two positions in front of and behind two ends of the linear operating platform;
3) manufacturing a linear truss on a linear operation table;
4) using two cranes to transport the linear truss, firstly manufacturing a first truss, respectively acting on left and right hoisting points of the linear truss to hoist simultaneously, transporting the linear truss to a first truss installation position, and assembling the first truss to the upper end of a foundation beam;
5) the crane returns along the original path, and when the crane returns to the linear operating platform, the crane bypasses from two ends of the linear operating platform to the crane starting position on the other side of the linear operating platform;
6) repeating the steps 3) -5) to install other linear trusses, after the linear truss on the front side of the linear operation platform is assembled, the crane does not return to the crane starting position in a bypassing way, the linear truss stays on the opposite side of the crane starting position of the linear operation platform, the last truss is manufactured on the linear operation platform, the last truss is hoisted to the installation position through the crane and assembled, and the rest linear trusses are assembled in the same mode;
7) assembling a linear truss at the upper end of the linear operating platform: and moving the crane to the outer sides of the two ends of the linear operation platform, manufacturing foundation beams at the two ends of the linear operation platform, assembling a linear truss on the linear operation platform, and hoisting the linear truss to the upper end of the foundation beam through the crane for assembly.
In the step 1), the manufacturing method of the linear operating platform comprises the following steps:
firstly, hardening the ground, manufacturing two pedestals in parallel, namely an upper chord pedestal of a triangular truss and a lower chord pedestal of the triangular truss, embedding a reinforcing embedded part at an interval of 5-7m below the two pedestals, installing a square tube pedestal on the embedded part, and fastening by using bolts;
the upper chord has a bidirectional 5% slope, in order to adapt to the slope of the upper chord, the upper chord pedestal is divided into two sections, a transverse extension steel plate block is arranged on the upper chord pedestal according to the length of 5-7m, and a fixed limiting plate is arranged on the extension steel plate block and used for limiting the angle of the upper chord;
and welding steel pipe supports every 5-7m outside the lower chord pedestal, and arranging I-steel cross support plates at the upper ends of the supports for placing the lower chord steel pipes.
Compared with the prior art, the invention has the beneficial effects that:
a method for splicing petal-shaped large-span roof trusses provides a method for splicing large-span steel trusses, a truss ground assembly operation platform is manufactured, the risk degree of overhead operation is reduced, and the splicing quality and speed are improved; the method for integrally lifting and hoisting the two crawler cranes by splicing the single-span truss on site to form a whole ensures that the member is stressed reasonably in the lifting and moving processes, and the member is stably, accurately and quickly placed in place.
Drawings
FIG. 1 is a plan view of a roof truss of one petal;
FIG. 2 is a schematic view of a first step of manufacturing and hoisting a linear truss;
FIG. 3 is a schematic diagram of a second step of manufacturing and hoisting a linear truss;
FIG. 4 is a third schematic view of a linear truss manufacturing and hoisting step;
FIG. 5 is a schematic diagram of a fourth step of manufacturing and hoisting a linear truss;
FIG. 6 is a schematic diagram of a fifth step of manufacturing and hoisting the linear truss;
FIG. 7 is a schematic diagram of a sixth step of manufacturing and hoisting a linear truss;
FIG. 8 is a schematic view of a seventh step of manufacturing and hoisting the linear truss;
FIG. 9 is a schematic view of an eighth step of manufacturing and hoisting a linear truss;
FIG. 10 is a schematic view of a ninth step of manufacturing and hoisting the linear truss;
FIG. 11 is a schematic view of a steel truss;
FIG. 12 is a plan view of the linear stage;
FIG. 13 is a side view of the linear stage;
fig. 14 is a schematic view of crane hoisting.
In the figure: 1. the steel pipe truss structure comprises a foundation beam, 2 annular trusses, 3 linear trusses, 4 rear foundation beam positions, 5 crane traveling lines, 6 linear operation platforms, 7 first trusses, 8 second trusses, 9 third trusses, 10 fourth trusses, 11 fifth trusses, 12 sixth trusses, 13 seventh trusses, 14 eighth trusses, 15 cranes, 16 reinforcing embedded parts, 17 diagonal draw bars, 18 extending steel plate blocks, 19 limiting plates, 20 upper chord pedestals, 21 transverse bracing plates, 22 steel pipe supports, 23 lower chord pedestals and 24 hardened ground.
Detailed Description
The present invention will be described in detail below, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 to 14, the assembling method of the petal-shaped large-span roof truss includes the following steps:
1) assembling truss ground operation tables, and manufacturing two groups of operation tables, wherein one group of operation tables are arranged along the shape and the hoisting position of the petal annular truss 2 and are used for assembling the annular truss 2; the group of operation platforms are linear operation platforms 6 which are transversely arranged in the middle of the petals and used for splicing linear trusses, and a crane walking vacancy is reserved in each linear operation platform 6;
2) manufacturing a foundation beam 1 along a petal ring shape, splicing the manufactured ring-shaped truss 2 to the upper end of the foundation beam 1, and not manufacturing the foundation beam with two positions (a position 4 for manufacturing the foundation beam) at the front and the back of the two ends of a linear operating platform 6;
3) manufacturing a linear truss on the linear operation table 6;
4) using two cranes 15 to transport the linear truss, firstly manufacturing a first truss 7, using the two cranes 15 to respectively act on left and right hanging points of the linear truss for simultaneous hoisting, transporting to a first truss 7 placement position, and assembling the first truss 7 to the upper end of the foundation beam 1;
5) the crane 15 returns along the original path, and when returning to the linear operation table 6, bypasses from both ends of the linear operation table 6 to the crane starting position on the other side of the linear operation table 6;
6) repeating the steps 3) -5), installing other linear trusses, after assembling the linear truss on the front side of the linear operation platform 6, stopping the crane 15 on the opposite side of the crane initial position of the linear operation platform 6 without returning to the crane initial position, manufacturing the last truss (the eighth truss 14) on the linear operation platform 6, hoisting the last truss to the installation position through the crane 15, completing the assembly, and assembling the rest linear trusses in the same way;
7) assembling a linear truss at the upper end of the linear operating platform: and (3) moving the crane (15) to the outer sides of the two ends of the linear operation platform (6), manufacturing the foundation beams (1) at the two ends of the linear operation platform, assembling a linear truss on the linear operation platform (6), and hoisting the linear truss to the upper end of the foundation beam (1) through the crane for assembly.
In the step 1), the manufacturing method of the linear operating platform 6 comprises the following steps:
firstly, hardening the ground 24, manufacturing two pedestals in parallel, namely an upper chord pedestal 20 of a triangular truss and a lower chord pedestal 23 of the triangular truss, embedding a reinforcing embedded part 16 at intervals of 5-7m below the two pedestals, installing a square tube pedestal on the reinforcing embedded part 16, and fastening by using bolts;
the upper chord has a bidirectional 5% slope, in order to adapt to the slope of the upper chord, the upper chord pedestal 20 is divided into two sections, the transverse extension steel plate blocks 18 are arranged on the upper chord pedestal 20 according to the length of 5-7m, and the extension steel plate blocks 18 are provided with limiting plates 19 for limiting the angle of the upper chord;
and a steel pipe bracket 22 is welded at each 5-7m of the outer side of the lower chord pedestal 23, and an I-shaped steel cross support plate 21 is arranged at the upper end of the steel pipe bracket 22 and used for placing a lower chord steel pipe.
The construction process comprises the following steps: leveling and hardening a field, building an assembly platform, assembling a component in the field, preparing for hoisting, inspecting and accepting quality, and hoisting qualified. The reasonable degree of truss welding and deformation prevention process technology; the key of the installation is the measurement of the installation process, the reasonable installation procedure and the welding of important nodes. The lifting direction is that the petals are sequentially arranged from the inner side to the outer side.
The hoisting method comprises the following steps: and (4) the rods are unloaded to the designated positions for assembly after being transported to the site. And welding is started after the assembly spot welding is finished, backing welding is firstly carried out once, and then the cover surface is welded according to requirements to prevent welding deformation. The table is located on the ground, and the height difference after adjustment is not more than 2 mm. And the arching height is set according to 1/300 to ensure that the assembling quality of the steel truss meets the design requirement. Safety ropes are arranged along the upper chord of the truss, and a full-length springboard is laid so as to be convenient for unhooking and installing other auxiliary trusses, tie bars and other members. The safety rope needs to be tensioned, two ends of the safety rope are fixed by rope clamps, and the number of the rope clamps is not less than 3. The springboard is 3 m steel springboard, and the two ends of the springboard are firmly bound by 8# iron wires.
Attention points before hoisting: and after the tailor-welding is finished, carrying out ultrasonic flaw detection according to the grade requirement of the welding seam, detecting the internal quality of the welding seam, repairing and brushing the anticorrosive paint after the welding seam is qualified, and checking and accepting the quality and the thickness of the anticorrosive paint to meet the design requirement. And then brushing fire-retardant paint, and hoisting and installing after all the paint is qualified.
Selecting a lifting point: the hoisting points are selected on the nodes of the lower chord members of the truss, so that the stress direction of the node members is consistent with the design. And the rod stability checking calculation is not required.
Selecting a steel wire rope: the maximum hoisting weight of the engineering truss is calculated according to 20.1 tons, four-point binding hoisting is carried out, the bottom end angle of a hoisting steel wire rope is 78 degrees in the transverse direction, and the longitudinal direction is 64 degrees.
Through load checking calculation, a snap ring (phi 40mm) with the diameter of the cross shaft meeting the use requirement is selected.
In order to ensure the safety of the crane, roadbed steel plates are laid along the load running route of the crane.
Hoisting: 2 crawler cranes respectively act on the left and right hoisting points to hoist simultaneously. After the preparation work before hoisting is ready, firstly, trial hoisting is carried out, the hoisting is stopped when the hoisting height is 100-200 mm, the duration is 15 minutes, and the rigging firmness and the crane stability are checked. After the confirmation, the crane can be instructed to slowly ascend, the center of the truss is aligned to the center of the installation position, and then the hook is slowly ascended. The truss is hoisted to the top of the foundation beam column, the two cranes simultaneously drive in the installation direction, the two cranes are closely matched and synchronously operated, the posture of the truss is adjusted while walking until the truss is aligned with the foundation beam column top support, the truss is slowly operated when being positioned, the central line of the steel truss support is aligned with the central line of the foundation beam column top support, and the steel truss is slowly hooked and hoisted in place. Checking the elevation and the position of the truss in place, and welding the steel truss support and the top plate of the foundation beam column after the geometric dimension of the axis meets the requirements. Because the cross section of the truss is in an inverted triangle shape, two ends of the truss are respectively provided with a fulcrum, the vertical stability is poor, so that two cranes can not unhook, in order to ensure the vertical stability of the truss, before the support is welded with the top plate of the foundation beam column, the horizontal level of the upper chord of the truss is adjusted by a guy cable and a backspan, the auxiliary truss and the tie rod are installed by two QY25 truck cranes, after the auxiliary truss and the tie rod are installed and welded, the support is firmly welded with the top plate of the column, and the main truss and the auxiliary truss form a stable space total. The crane can pick off the hook to perform the next installation operation, and the installation of the first truss is completed. Other trusses are installed in this manner. And finishing the whole roof truss installation project.
Installing the last row of trusses (a fifth truss 11), installing two cranes (cranes) at the outer sides, changing hoisting parameters, and checking the cranes again:
the weight of the truss is 30.19 tons, the weight of auxiliary tools such as gangplank, frame pipe and the like is about 3 tons, the maximum lifting weight is about 33.19 tons, the length of the member is 70.22m, and the height of the truss is 4.2 m. The lifting height is 10.775 meters. The three-one QUY150 crawler crane has the working conditions that the length of a main arm is 46m, the rotating radius of a suspension arm is 18.0m, and the weight of the suspension arm can be 31.5 tons.
Claims (2)
1. The assembling method of the petal-shaped large-span roof truss is characterized by comprising the following steps:
1) assembling truss ground operation tables, and manufacturing two groups of operation tables, wherein one group of operation tables are arranged along the shape and the hoisting position of the petal annular truss and are used for assembling the annular truss; the group of operation platforms are linear operation platforms, are transversely arranged in the middle of the petals and are used for splicing the linear trusses, and a crane walking vacancy is reserved in each linear operation platform;
2) manufacturing a foundation beam along the petal ring shape, splicing the manufactured ring-shaped truss to the upper end of the foundation beam, and not manufacturing the foundation beam at two positions in front of and behind two ends of the linear operating platform;
3) manufacturing a linear truss on a linear operation table;
4) using two cranes to transport the linear truss, firstly manufacturing a first truss, respectively acting on left and right hoisting points of the linear truss to hoist simultaneously, transporting the linear truss to a first truss installation position, and assembling the first truss to the upper end of a foundation beam;
5) the crane returns along the original path, and when the crane returns to the linear operating platform, the crane bypasses from two ends of the linear operating platform to the crane starting position on the other side of the linear operating platform;
6) repeating the steps 3) -5) to install other linear trusses, after the linear truss on the front side of the linear operation platform is assembled, the crane does not return to the crane starting position in a bypassing way, the linear truss stays on the opposite side of the crane starting position of the linear operation platform, the last truss is manufactured on the linear operation platform, the last truss is hoisted to the installation position through the crane and assembled, and the rest linear trusses are assembled in the same mode;
7) assembling a linear truss at the upper end of the linear operating platform: and moving the crane to the outer sides of the two ends of the linear operation platform, manufacturing foundation beams at the two ends of the linear operation platform, assembling a linear truss on the linear operation platform, and hoisting the linear truss to the upper end of the foundation beam through the crane for assembly.
2. The assembling method of the petal-shaped large-span roof truss according to claim 1, wherein in the step 1), the manufacturing method of the linear operating platform comprises the following steps:
firstly, hardening the ground, manufacturing two pedestals in parallel, namely an upper chord pedestal of a triangular truss and a lower chord pedestal of the triangular truss, embedding a reinforcing embedded part at an interval of 5-7m below the two pedestals, installing a square tube pedestal on the embedded part, and fastening by using bolts;
in order to adapt to the slope of the upper chord, the upper chord pedestal is divided into two sections, a transverse extension steel plate block is arranged on the upper chord pedestal according to the length of every 5-7m, and a fixed limiting plate is arranged on the extension steel plate block and used for limiting the angle of the upper chord;
and welding steel pipe supports every 5-7m outside the lower chord pedestal, and arranging I-steel cross support plates at the upper ends of the supports for placing the lower chord steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435560.1A CN112627355B (en) | 2020-12-10 | 2020-12-10 | Petal-shaped large-span roof truss assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435560.1A CN112627355B (en) | 2020-12-10 | 2020-12-10 | Petal-shaped large-span roof truss assembling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112627355A CN112627355A (en) | 2021-04-09 |
| CN112627355B true CN112627355B (en) | 2022-03-08 |
Family
ID=75309374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011435560.1A Active CN112627355B (en) | 2020-12-10 | 2020-12-10 | Petal-shaped large-span roof truss assembling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112627355B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2942761B1 (en) * | 1998-05-15 | 1999-08-30 | 株式会社鴻池組 | Construction method of large roof |
| CN203334730U (en) * | 2012-10-29 | 2013-12-11 | 中国十七冶集团有限公司 | Split mounting type steel-structure movable workshop in construction site |
| CN104389432A (en) * | 2014-10-21 | 2015-03-04 | 北京建工土木工程有限公司 | Integral lifting equipment of steel truss-supported concrete house roof system and construction method |
| CN105822071A (en) * | 2016-03-29 | 2016-08-03 | 浙江中南建设集团钢结构有限公司 | Peripheral bearing bidirectional intersected spatial steel truss structure one-way lifting installing process |
| CN110258802A (en) * | 2019-05-31 | 2019-09-20 | 东南大学 | A kind of Ultra-Long Spans spoke type suspended-dome structure based on flying swallow truss arch |
| CN110886532A (en) * | 2019-11-26 | 2020-03-17 | 北京工业大学 | Large-span bidirectional arch truss cable membrane material field closed structure system |
| CN111042540A (en) * | 2019-12-18 | 2020-04-21 | 徐州中煤百甲重钢科技股份有限公司 | Construction method for aerial butt joint of ground suspension cables of super-large-span prestressed pipe truss |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332515A (en) * | 2015-10-29 | 2016-02-17 | 中冶建工集团有限公司 | Erection method of large-span truss structure in limited space |
-
2020
- 2020-12-10 CN CN202011435560.1A patent/CN112627355B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2942761B1 (en) * | 1998-05-15 | 1999-08-30 | 株式会社鴻池組 | Construction method of large roof |
| CN203334730U (en) * | 2012-10-29 | 2013-12-11 | 中国十七冶集团有限公司 | Split mounting type steel-structure movable workshop in construction site |
| CN104389432A (en) * | 2014-10-21 | 2015-03-04 | 北京建工土木工程有限公司 | Integral lifting equipment of steel truss-supported concrete house roof system and construction method |
| CN105822071A (en) * | 2016-03-29 | 2016-08-03 | 浙江中南建设集团钢结构有限公司 | Peripheral bearing bidirectional intersected spatial steel truss structure one-way lifting installing process |
| CN110258802A (en) * | 2019-05-31 | 2019-09-20 | 东南大学 | A kind of Ultra-Long Spans spoke type suspended-dome structure based on flying swallow truss arch |
| CN110886532A (en) * | 2019-11-26 | 2020-03-17 | 北京工业大学 | Large-span bidirectional arch truss cable membrane material field closed structure system |
| CN111042540A (en) * | 2019-12-18 | 2020-04-21 | 徐州中煤百甲重钢科技股份有限公司 | Construction method for aerial butt joint of ground suspension cables of super-large-span prestressed pipe truss |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112627355A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106836498B (en) | Hoisting construction method for steel truss of grand stand roof of super-large span stadium | |
| CN103291076B (en) | Multilayer steel truss fragmented reverse hoisting construction method in arc-shaped frame | |
| CN111501997A (en) | Steel truss structure construction method applied to stadium | |
| CN112343233A (en) | Round roof space pipe truss structure and construction method thereof | |
| CN107013038B (en) | A kind of steel structure slipping of building roof lighting Zhongting changes column construction method | |
| CN114439249B (en) | Construction method for lifting large-span triangular truss through air swivel | |
| CN110847062A (en) | Construction method for whole-hole assembly double-width erection in 80-meter-span wide steel box girder factory | |
| CN111254836A (en) | Site assembling and bridge girder erection machine erecting construction method for large-span steel-concrete composite beam in mountainous area | |
| CN111335610A (en) | High-altitude large-span cantilever formwork operation platform and erection method thereof | |
| CN111561175B (en) | Prestress underpinning static force cutting and column pulling construction process | |
| CN112211103A (en) | Special safe construction process for assembling and installing coal conveying trestle steel truss | |
| CN113585828A (en) | Installation method of large-span inverted triangular pipe truss slope roof workshop | |
| CN112627355B (en) | Petal-shaped large-span roof truss assembling method | |
| CN115341701B (en) | Hanging formwork construction method for high-altitude overhanging steel bar truss floor support plate | |
| CN113982284A (en) | Installation method of large-span special-shaped steel structure toll booth | |
| CN113089844A (en) | Space grid construction process carried out by combining existing building with sliding | |
| CN112575948A (en) | Truss string beam and cantilever truss combined roof truss and construction method | |
| CN113323404A (en) | Installation method of integrated steel truss | |
| CN214531431U (en) | Truss combination roof truss of opening string roof beam and encorbelmenting | |
| CN114277673B (en) | Large-span large-inclination-angle basket type steel girder and arch segment assembling method | |
| CN218621839U (en) | Steel-concrete joint section construction support system of hybrid beam cable-stayed bridge | |
| CN219753455U (en) | Roof steel truss structure | |
| CN210659363U (en) | Steel structure for oil storage tank | |
| CN219137417U (en) | Temporary support system of special-shaped steel-concrete combined main tower of cable-stayed bridge | |
| CN213896812U (en) | Temporary support for construction of large-span non-support steel box girder by cantilever process |
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 |