CN106193284B - The installation method and mounting structure of large span space drop level continuous truss frame - Google Patents
The installation method and mounting structure of large span space drop level continuous truss frame Download PDFInfo
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- CN106193284B CN106193284B CN201610630049.4A CN201610630049A CN106193284B CN 106193284 B CN106193284 B CN 106193284B CN 201610630049 A CN201610630049 A CN 201610630049A CN 106193284 B CN106193284 B CN 106193284B
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- davit
- drop level
- truss
- cantilever
- overhanging
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional [3D] framework 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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The present invention relates to a kind of installation methods of large span space drop level continuous truss frame, include the following steps: to lift across the truss cantilever of low side and high-end across truss cantilever on the main structure body at steel truss both ends, across the truss cantilever of low side and the high-end end across truss cantilever stretch out corresponding main structure body and be correspondingly formed low side overhanging end and high-end overhanging end；The first drop level davit is lifted in low side overhanging end；The second drop level davit is lifted in the high-end overhanging end；And across girder truss in being lifted between the first drop level davit and the second drop level davit.Overhanging end is formed using truss cantilever is first installed on low side and high-end main structure body, utilize the installation method closed up across girder truss without support in the realization of drop level davit, overhanging end amount of deflection is cumulative caused by avoiding in existing way is easy to produce the problem of installing accumulated error, the overhanging for realizing Large Span Spatial Truss body is closed up once-forming, is easily installed control.Property.
Description
Technical field
The present invention relates to the realm of building construction, refer in particular to the installation method and peace of a kind of large span space drop level continuous truss frame
Assembling structure.
Background technique
With the fast development of current construction steel structure, large space Roof Truss system is strong with its span ability, empty
Between the features such as scale of construction is small, industrialization degree is high, loading superior performance, in all kinds of shopping squares, conference centre and stadium work
Journey project etc. obtains widely designing application.For the occupancy for reducing operation process middle and lower part space, the intersection of process easy to produce
Carry out, installation is often carried out using the method for high-altitude overhanging installation in engineering.
Existing overhang installation method is to take process by the form that continuous trusse axial unit is segmented to show up, scene
The method implementation high-altitude of the accumulative overhanging installation of unit is installed without support one by one.But such method is used for large span space through girder
When frame, especially space drop level continuous trusse installation, not only implementation flexibility is poor, overhanging installation period is long, but also technology
Risk is high, is easy to produce overhanging end installation cumulative errors, increases the uncertainty of subsequent segment overhanging benchmark, seriously affect to work
The control that journey is implemented.For this purpose, realizing that high headroom, large span space are wrong how on the basis of reducing overhanging installation segmentation
The overhanging installation for falling continuous truss frame roof system is closed up needed for a situation as current techniques forward position.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of large span space drop level continuous truss frame is provided
Installation method and mounting structure solve to be easy to produce installation accumulated error existing for segmentation overhang installation method in the prior art,
The problem of increasing the uncertainty that subsequent segment overhangs benchmark, seriously affecting the control of engineering construction.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of installation methods of large span space drop level continuous truss frame, include the following steps:
Across the truss cantilever of low side and high-end across truss cantilever, the low side are lifted on the main structure body at steel truss both ends
Across truss cantilever and the high-end end across truss cantilever stretch out corresponding main structure body and be correspondingly formed low side overhanging end and
High-end overhanging end；
The first drop level davit is lifted in low side overhanging end；
The second drop level davit is lifted in the high-end overhanging end；And
Across girder truss in lifting between the first drop level davit and the second drop level davit.
Overhanging end is formed using truss cantilever is first installed on low side and high-end main structure body, is on two overhanging ends
Drop level davit is installed, finally between drop level davit in lifting across girder truss, the installation closed up across girder truss without support in realization
Method, overhanging end amount of deflection is cumulative caused by avoiding in existing way is easy to produce the problem of installing accumulated error, realizes big
The overhanging of span spatial joist body is closed up once-forming, is easily installed control.Installation method of the invention effectively reduces both ends
The installation deviation for overhanging end improves the flexibility of in-site installation implementation.
The installation method of large span space drop level continuous truss frame of the present invention further improvement lies in that, across truss in lifting
Beam includes:
The first side elevation structure and second side facade structures across girder truss in assembled formation respectively；
Lift the first side elevation structure between the first drop level davit and the second drop level davit, and by institute
The first side elevation structure is stated to be fixedly connected with the first drop level davit and the second drop level davit；
Lift second side facade structures between the first drop level davit and the second drop level davit, and by institute
It states second side facade structures and the first drop level davit and the second drop level davit installation is fixed, and second side elevation
Structure is oppositely arranged with the first side elevation structure；
Top tie-rod is lifted, the top tie-rod is mounted on the first side elevation structure and described second edge-on
Between the structure of face；
Lower part tie-rod is lifted, the lower part tie-rod is mounted on the first side elevation structure and described second edge-on
Between the structure of face.
The installation method of large span space drop level continuous truss frame of the present invention further improvement lies in that, further includes:
The bottom of the first drop level davit is fixedly connected with low side overhanging end；
The top of the second drop level davit is fixedly connected with the high-end overhanging end, so that second drop level is hung
It is oppositely arranged at the top of the bottom of column and the first drop level davit.
The installation method of large span space drop level continuous truss frame of the present invention further improvement lies in that, first drop level
Davit and the second drop level davit include that the first support column being oppositely arranged and the second support column and support are connected to institute
State the connecting rod between the first support column and second support column；
The end of the first side elevation structure is fixedly connected on the corresponding first drop level davit and described second
First support column of drop level davit；
The end of second side facade structures is fixedly connected on the corresponding first drop level davit and described second
Second support column of drop level davit.
The installation method of large span space drop level continuous truss frame of the present invention further improvement lies in that, by low side across truss
Cantilever and high-end across truss cantilever are installed on roof system column.
The present invention also provides a kind of mounting structures of large span space drop level continuous truss frame, comprising:
It is installed on the main structure body at steel truss both ends to be formed across the truss cantilever of low side and high-end outstanding across truss
Arm, across the truss cantilever of low side and the high-end end across truss cantilever are stretched out corresponding main structure body and are correspondingly formed low
End overhanging end and high-end overhanging end；
It is installed in the first drop level davit at low side overhanging end of the low side across truss cantilever；
It is installed in the second drop level davit at the high-end high-end overhanging end across truss cantilever；And
Across girder truss in being installed between the first drop level davit and the second drop level davit.
The mounting structure of large span space drop level continuous truss frame of the present invention further improvement lies in that, it is described in across truss
Beam includes that the first side elevation structure being installed between the first drop level davit and the second drop level davit and second are edge-on
Face structure, further include dissipate spell be installed on top tie-rod between the first side elevation structure and second side facade structures and
Lower part tie-rod.
The mounting structure of large span space drop level continuous truss frame of the present invention further improvement lies in that, first drop level
The bottom of davit is fixedly connected with low side overhanging end, and the top of the second drop level davit is fixed with the high-end overhanging end
It connects, is oppositely arranged at the top of the bottom of the second drop level davit and the first drop level davit.
The mounting structure of large span space drop level continuous truss frame of the present invention further improvement lies in that, first drop level
Davit and the second drop level davit include that the first support column being oppositely arranged and the second support column and support are connected to institute
State the connecting rod between the first support column and second support column；
The end of the first side elevation structure is fixedly connected on the corresponding first drop level davit and described second and falls
First support column of grade davit；
The end of second side facade structures is fixedly connected on the corresponding first drop level davit and described second and falls
Second support column of grade davit.
The mounting structure of large span space drop level continuous truss frame of the present invention further improvement lies in that, the low side is across purlin
Frame cantilever and high-end across the truss cantilever are installed on the roof system column of the main structure body.
Detailed description of the invention
Fig. 1 be large span space drop level continuous truss frame of the present invention installation method in lift the first drop level davit and second
The structural schematic diagram of drop level davit.
Fig. 2 be large span space drop level continuous truss frame of the present invention installation method in install the first drop level davit and the
The structural schematic diagram of two drop level davits.
Fig. 3 be large span space drop level continuous truss frame of the present invention installation method in lift the knot of the first side elevation structure
Structure schematic diagram.
Fig. 4 is the knot that second side facade structures are lifted in the installation method of large span space drop level continuous truss frame of the present invention
Structure schematic diagram.
Fig. 5 is the structural representation that top tie-rod is lifted in the installation method of large span space drop level continuous truss frame of the present invention
Figure.
Fig. 6 is the structural representation that lower part tie-rod is lifted in the installation method of large span space drop level continuous truss frame of the present invention
Figure.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
The present invention provides the installation method and mounting structure of a kind of large span space drop level continuous truss frame, overcome existing
Row Large-Span Continuous steel truss overhangs the short slab of mounting technique, simplifies installation and implements process, wrong for high headroom, large span space
The characteristics of falling continuous roof system steel truss, to conventional axial be segmented overhanging installation method improve, form be suitable for greatly across
The semi-girder overhanging mounting technique that degree space drop level continuous truss frame high-altitude quickly closes up.The present invention reuses steel truss both ends
The vertical bearing capacity of roof system column in main structure body is installed using across the truss cantilever of apex, then installs drop level davit, it is rear in across purlin
The sequential organization installation closed up without support set a roof beam in place, and centering uses the whole spelling of side elevation truss across girder truss, fills after tie-rod fission
Method carry out lightweight decomposition, close up installation, not only met the limitation of live tower crane hoist, but also effectively reduce and both ends purlin
The installation deviation of frame cantilever improves the flexibility of in-site installation implementation.Large span space of the present invention is fallen with reference to the accompanying drawing
The installation method and mounting structure of the continuous steel truss of grade are illustrated.
As shown in Figure 1, the mounting structure of large span space drop level continuous truss frame provided by the invention includes low side across purlin
Frame cantilever 21 and high-end across truss cantilever 22, across the truss cantilever 21 of low side and high-end across truss cantilever 22 are installed in steel to be formed
On main structure body at truss both ends, across the truss cantilever 21 of low side therein is installed on the main structure body of low side,
High-end across truss cantilever 22 is installed on high-end main structure body.Low side is stretched out in the end of across the truss cantilever 21 of low side
Main structure body forms low side and overhangs end 211, and the end of high-end across truss cantilever 22 stretches out high-end main structure body and forms high-end hang
Choose end 221.Across the truss cantilever 21 of low side and high-end across truss cantilever 22 are supported using the roof system column 11 of main structure body, i.e., it will be low
It holds across truss cantilever 21 to be installed on the roof system column 11 of low side main structure body, high-end across truss cantilever 22 is installed on high-end knot
On the roof system column 11 of structure main body.
As shown in connection with fig. 2, the mounting structure further include be installed in across the truss cantilever 21 of low side low side overhanging end 211 the
One drop level davit 23 and be installed in high-end across truss cantilever 22 high-end overhanging end 221 the second drop level davit 24, this first falls
Grade davit 23 and the second drop level davit 24 are installed on low side by lifting and overhang end 211 and high-end overhanging end 221, fall by first
Grade davit 23 and the second drop level davit 24 balance the drop level height difference of the steel truss in the present invention.The bottom of first drop level davit 23
It is fixedly connected with low side overhanging end 211, the top of the second drop level davit 24 is fixedly connected with high-end overhanging end 221, this second falls
The bottom of grade davit 24 and the top of the first drop level davit 23 are oppositely arranged, and are fallen by the bottom and first of the second drop level davit 24
Section aligned is arranged at the top of grade davit 23, is horizontally mounted basis to be provided in subsequent across girder truss, balances drop level height difference,
Reduce the installation deviation between overhanging end, the installation difficulty across girder truss in reduction simplifies construction technology.First drop level is hung
Column 23 includes the first support column 231 and the second support column 232 being oppositely arranged, and support is connected to 231 He of the first support column
Multiple connecting rods 233 between second support column 232, when installing the first drop level davit 23, by the first support column 231 and second
Support column 232 is weldingly fixed on corresponding low side overhanging end 211.Second drop level davit 24 includes the first support being oppositely arranged
Column 241 and the second support column 242, and support are connected to multiple connections between the first support column 241 and the second support column 242
First support column 241 and the second support column 242 are weldingly fixed on corresponding height when installing the second drop level davit 24 by bar 243
On the overhanging end 221 of end.First support column 231 therein and the first support column 241 are oppositely arranged, the second support column 232 and second
Support column 242 is oppositely arranged.
As shown in connection with fig. 6, which further includes being installed between the first drop level davit 23 and the second drop level davit 24
In across girder truss 25.It across girder truss 25 include being installed in the first drop level davit 23 and second in this in conjunction with shown in Fig. 3 and Fig. 4
The first side elevation structure 251 and second side facade structures 252 between drop level davit 24, the first side elevation structure 251 and second
Side elevation structure 252 then lifts installation using in the whole type that is combined into ground respectively.The end of first side elevation structure 251 is fixed to be connected
It is connected on the first support column 231 and the first support column 241 of the first drop level davit 23 and the second drop level davit 24, the second side elevation
The end of structure 252 is fixedly connected on the second support column 232 and the second support column 242, second side facade structures 252 and first
Side elevation structure 251 is oppositely arranged.In conjunction with shown in Fig. 5 and Fig. 6, in across girder truss 25 further include dissipate spell be mounted on the first side elevation
Top tie-rod 253 and lower part tie-rod 254 between structure 251 and second side facade structures 252, top tie-rod 253 and lower part series
Bar 254 is installed by the way of dissipating spelling, at position of the member erection in across girder truss 25, is then welded and fixed using assembly
Mode installation top tie-rod 253 and lower part tie-rod 254 one by one.Centering carries out construction decomposition across girder truss 25, takes edge-on
The whole spelling in face, the mode filled after tie-rod is seperated close up installation, reduce the hoist of component, relieve lifting to big machinery according to
Rely, maneuverability also facilitates installation control.
Mounting structure of the invention is used without support Long-span Cantilever mounting means, and the operation of space process is avoided to intersect,
Installation is efficiently, directly.
The high-end overhanging end that the truss cantilever of both ends high-low position is formed and bottom end overhanging end as drop level davit in across
The installation fulcrum of girder truss forms the structure that overhanging extends installation, and overhanging installed height mark regulation is primary, relative to existing
Segmentation overhanging installation enhanced convenience, simplifies the measurement control manipulation number in work progress, effectively improves construction efficiency.
Across truss beam decomposes by, using the whole spelling of side elevation truss, fills after tie-rod is seperated, reduces hanging for component
Weight relieves the lifting to big machinery and relies on, maneuverability, and installation operation is easily controllable, and easy construction is quick.In addition,
The installation deviation at both ends overhanging end is also reduced, construction technology is simplified.
Mounting structure of the invention avoids the cumulative problem of overhanging end amount of deflection caused by segmentation overhanging installation, realizes
The overhanging of large-span truss is closed up once-forming, is easily installed control, and truss installa-tion precision is high, sound construction is reliable.
Mounting structure of the invention can be widely applied to the biggish space continuous trusse high-altitude overhanging installation of span.
The installation method of large span space drop level continuous truss frame provided by the invention is illustrated below.
The installation method of large span space drop level continuous truss frame of the present invention includes the following steps:
As depicted in figs. 1 and 2, lifted on the main structure body at steel truss both ends across the truss cantilever 21 of low side and it is high-end across
Corresponding main structure body and corresponding shape are stretched out in the end of truss cantilever 22, across the truss cantilever 21 of low side and high-end across truss cantilever 22
End 211 and high-end overhanging end 221 are overhang at low side.The first drop level davit 23 is lifted on low side overhanging end 211, is overhang in height
Lift the second drop level davit 24 on end 221, as shown in connection with fig. 6, then the first drop level davit 23 and the second drop level davit 24 it
Between lifting in across girder truss 25.
Using above-mentioned installation method, the installation deviation at overhanging end can be reduced, so that installation process is easy to control, and letter
Construction technology is changed.
Include the following steps: in assembled formation respectively in conjunction with shown in Fig. 3 and Fig. 4, when in lifting across girder truss 25 across purlin
Set a roof beam in place 25 the first side elevation structure 251 and second side facade structures 252；In the first drop level davit 23 and the second drop level davit 24
Between lift the first side elevation structure 251, by the first side elevation structure 251 and the first drop level davit 23 and the second drop level davit 24
It is fixedly connected；Second side facade structures 252 are lifted between the first drop level davit 23 and the second drop level davit 24, it is edge-on by second
Face structure 252 and the installation of the first drop level davit 23 and the second drop level davit 24 are fixed, and second side facade structures 252 and the first side
Facade structures 251 are oppositely arranged；As shown in connection with fig. 5, top tie-rod 253 is lifted, top tie-rod 253 is mounted on the first side
Between facade structures 251 and second side facade structures 252, top tie-rod 253 includes top boom, web member and brace, by top
The assembly of tie-rod 253 one by one is in the top of the first side elevation structure 251 and second side facade structures 252；As shown in connection with fig. 6, it hangs
Load portion's tie-rod 254, by lower part tie-rod 254 be fixed on the first side elevation structure 251 and second side facade structures 252 it
Between, lower part tie-rod 254 includes lower boom, web member and brace, by the assembly of lower part tie-rod 254 one by one in the first side elevation structure
251 and second side facade structures 252 lower part.In across girder truss 25 use the whole spelling of side elevation, tie-rod dissipate spell installation method, drop
The low hoist of component relieves the lifting to big machinery and relies on, maneuverability, and is easy to control to installation process, constructs
Process simplifies.
Installation method of the invention further include: as shown in connection with fig. 2, the bottom of the first drop level davit 23 and low side are overhang into end
211 are fixedly connected, and the top of the second drop level davit 24 are fixedly connected with high-end overhanging end 221, so that the second drop level davit 24
Bottom and the top of the first drop level davit 23 be oppositely arranged.Bottom and the first drop level davit 23 by the second drop level davit 24
Top have section aligned, be horizontally mounted basis to be provided in subsequent across girder truss, balance drop level height difference, reduce outstanding
The installation deviation between end is chosen, the installation difficulty across girder truss in reduction simplifies construction technology.
First drop level davit 23 includes the first support column 231 and the second support column 232 being oppositely arranged, and support connection
Multiple connecting rods 233 between the first support column 231 and the second support column 232, when installing the first drop level davit 23, by
One support column 231 and the second support column 232 are weldingly fixed on corresponding low side overhanging end 211.Second drop level davit 24 includes
The first support column 241 and the second support column 242 being oppositely arranged, and support are connected to the first support column 241 and the second support
Multiple connecting rods 243 between column 242, when installing the second drop level davit 24, by the first support column 241 and the second support column
242 are weldingly fixed on corresponding high-end overhanging end 221.First support column 231 therein and the first support column 241 are set relatively
It sets, the second support column 232 and the second support column 242 are oppositely arranged.
When installing the first side elevation structure 251 and second side facade structures 252, by the end of the first side elevation structure 251
Portion is fixedly connected on the first support column 231 and the first support column of corresponding first drop level davit 23 and the second drop level davit 24
On 241, the end of second side facade structures 252 is fixedly connected on corresponding first drop level davit 23 and the second drop level davit 24
The second support column 232 and the second support column 242 on.
Across the truss cantilever 21 of low side is installed and when high-end across truss cantilever 22, through across the truss cantilever 21 of low side and high-end across purlin
Frame cantilever 22 is mounted on roof system column 11, supports across the truss cantilever 21 of low side and high-end across truss cantilever using roof system column 11
22, and then supported in connection by across the truss cantilever 21 of low side and high-end across truss cantilever 22 across girder truss 25 again.
The installation method of large span space drop level continuous truss frame of the invention utilizes vertically holding for truss two-end structure column
Power, take the installation of apex across truss cantilever, install again drop level davit, it is rear in the installation flowing water group closed up across girder truss without support
It knits, and centering further takes " the whole spelling of side elevation truss fills after tie-rod is seperated " method to carry out lightweight decomposition, close across girder truss
Hold together installation, while weakening live tower crane hoist limitation, reduces the installation deviation with both ends truss cantilever, significantly simplify
Construction technology.Large span of the invention refers to that span length is more than or equal to 71 meters, and high-end truss cantilever and bottom end truss cantilever fall
Grade height difference is between 4 meters to 5 meters.
When installing implementation it is noted that following main points:
Before the installation of truss cantilever, construction simulation is tracked by Midas-Gen to sectional members itself and structural matrix and is surveyed
It calculates, makes specific f-w effect analysis, determine the maximum pre- springing quantum of cantilever end；
After truss cantilever is installed, field measurement truss cantilever deflection amount, after across the girder truss carry out size adjusting of centering,
It carries out closing up installation again；
For the influence for reducing temperature factor, in the side elevation structure fragment installation across girder truss to be preferably arranged in the temperature difference lesser
Morning carries out low temperature and closes up；
To the davit connecting points and girder truss side elevation structure fragment top-bottom chord in installation process, preferably answered using type vibration wire
Power meter implements monitoring control；
Girder truss side elevation structure fragment lesser for figure is taken whole across the pre- assembly of segmentation；It is larger for figure
Truss fragment, take it is whole across be segmented pre- assembly on the basis of, then to span centre segmentation take lower edge to separate；
When large-scale pre-splicing lifting component, arm is chosen using double vertical plate Karmas fall and hang interim fixing；
When sectional members or tie-rod dock, it is desirable that rod piece is docked section and welded using V-arrangement full penetration groove.Meanwhile slab
Groove welding need to use multiple tracks multilayer welding, must not use wealthy welding bead method.
The installation method of large span space drop level continuous truss frame of the present invention has the beneficial effect that
The present invention is used without support Long-span Cantilever installation, and the operation for avoiding space process intersects, and installation is efficiently and straight
It connects.
Using the overhanging end of high-end truss cantilever and bottom end truss cantilever as drop level davit and in the installation branch across girder truss
Point forms overhanging and extends installation, and overhanging installed height mark regulation is primary, greatly reduces installation procedure, improves installation effectiveness.
Centering is decomposed across girder truss, the whole spelling installation of side elevation, the seperated subsequent scattered spelling of tie-rod, across girder truss in realization
Close up installation, reduce the lifting of component, relieves the lifting to big machinery and rely on, maneuverability.
Installation method of the invention avoids problem cumulative to overhanging end amount of deflection caused by segmentation overhanging installation, realizes
The overhanging of Large Span Spatial Truss body is closed up once-forming, is easily installed control.
Installation method of the invention, it is applied widely, it can be widely used for the biggish space continuous trusse high-altitude overhanging of span
Installation.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (4)
1. a kind of installation method of large span space drop level continuous truss frame, which comprises the steps of:
Across the truss cantilever of low side and high-end across truss cantilever are lifted on the main structure body at steel truss both ends, the low side is across purlin
Frame cantilever and the high-end end across truss cantilever stretch out corresponding main structure body and are correspondingly formed low side overhanging end and high-end
Overhang end；Using high-end across truss cantilever and low side across the high-end overhanging end of truss cantilever and low side overhanging end as installing fulcrum,
It forms overhanging and extends installation, and it is primary to overhang installed height mark regulation；
The first drop level davit is lifted in low side overhanging end；
The second drop level davit is lifted in the high-end overhanging end；And
Across girder truss in lifting between the first drop level davit and the second drop level davit；Across girder truss packet in lifting
It includes:
The first side elevation structure and second side facade structures across girder truss in assembled formation respectively；
Lift the first side elevation structure between the first drop level davit and the second drop level davit, and by described
Side facade structures are fixedly connected with the first drop level davit and the second drop level davit；
Lift second side facade structures between the first drop level davit and the second drop level davit, and by described
Two side elevation structures and the installation of the first drop level davit and the second drop level davit are fixed, and second side facade structures
It is oppositely arranged with the first side elevation structure；
Top tie-rod is lifted, the top tie-rod is mounted on the first side elevation structure and the second side elevation knot
Between structure；
Lower part tie-rod is lifted, the lower part tie-rod is mounted on the first side elevation structure and the second side elevation knot
Between structure.
2. the installation method of large span space drop level continuous truss frame as described in claim 1, which is characterized in that further include:
The bottom of the first drop level davit is fixedly connected with low side overhanging end；
The top of the second drop level davit is fixedly connected with the high-end overhanging end, so that the second drop level davit
It is oppositely arranged at the top of bottom and the first drop level davit.
3. the installation method of large span space drop level continuous truss frame as described in claim 1, which is characterized in that described first
Drop level davit and the second drop level davit include the first support column being oppositely arranged and the second support column and support connection
Connecting rod between first support column and second support column；
The end of the first side elevation structure is fixedly connected on the corresponding first drop level davit and second drop level
First support column of davit；
The end of second side facade structures is fixedly connected on the corresponding first drop level davit and second drop level
Second support column of davit.
4. the installation method of large span space drop level continuous truss frame as described in claim 1, which is characterized in that by low side across
Truss cantilever and high-end across truss cantilever are installed on roof system column.
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| CN109469256B (en) * | 2018-12-10 | 2024-01-26 | 中建二局安装工程有限公司 | Large-span gradual-change type cross-section parallel continuous truss roof and construction method |
| CN111519762B (en) * | 2020-05-20 | 2024-11-19 | 同济大学建筑设计研究院(集团)有限公司 | A cantilever truss structure system |
| CN111749384B (en) * | 2020-06-17 | 2021-09-10 | 中建二局阳光智造有限公司 | Steel structure roof structure of tower and construction method thereof |
| CN112443043B (en) * | 2020-11-25 | 2022-02-22 | 浙大城市学院 | Multilayer through-height large-space cantilever truss structure with embedded small orthotropic truss and application |
| CN116770980A (en) * | 2023-05-22 | 2023-09-19 | 中国建筑第二工程局有限公司 | Extra-long variable-height V-shaped large-span steel structure corridor and its construction method |
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