CN116122578A - Construction method of large truss in middle of double-tower building - Google Patents
Construction method of large truss in middle of double-tower building Download PDFInfo
- Publication number
- CN116122578A CN116122578A CN202310104143.6A CN202310104143A CN116122578A CN 116122578 A CN116122578 A CN 116122578A CN 202310104143 A CN202310104143 A CN 202310104143A CN 116122578 A CN116122578 A CN 116122578A
- Authority
- CN
- China
- Prior art keywords
- middle section
- double
- layer frame
- truss
- tower
- 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.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
Abstract
The invention discloses a construction method of a large truss in the middle of a double tower, which adopts a construction method of integrally assembling on the ground, can improve the node installation precision, improve the welding quality of a steel structure, reduce the overhead welding operation and ensure the construction operation safety, and on the other hand, adopts a construction method of integrally lifting, reduces the hanging time of a tower crane, shortens the time of occupying the construction of the tower crane and ensures the construction progress. The invention solves the problem that the installation precision of the high-altitude truss structure of the super high-rise building cannot be ensured by adopting the traditional construction method.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a large truss in the middle of a double-tower building.
Background
The super high-rise high-altitude truss structure ensures the safety of construction, the installation progress and the welding quality during construction, and is the key point and the difficulty of steel structure construction. The traditional method is to hoist steel components one by one at high altitude for installation and welding, and the method has large high altitude workload, and cannot guarantee the installation precision and the construction safety.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to overcome the defects existing in the prior art, a construction method of a large truss in the middle of a double-tower building is provided at present, so that the problem that the installation accuracy cannot be guaranteed due to the fact that a traditional construction method is adopted in a high-altitude truss structure of an ultra-high-rise building is solved.
In order to achieve the above purpose, a construction method of a large truss in the middle of a double tower is provided, comprising the following steps:
dividing a large truss between the middle parts of the double-tower building into a middle section and a block, wherein the length of the block is smaller than that of the middle section, and the middle section is divided into an upper layer frame, a middle layer frame and a lower layer frame;
constructing the double-tower building, and respectively forming reserved brackets on opposite sides of the middle part of the double-tower building;
a plurality of concrete columns are arranged on the ground between the double towers, so that the top ends of the concrete columns extend to the upper part of the ground;
erecting jig frames on the top ends of a plurality of concrete columns;
the lower layer frame, the middle layer frame and the upper layer frame are erected on the jig frame;
mounting the middle layer frame on the lower layer frame;
installing the upper shelf on the middle shelf to form the middle section;
hoisting the middle section to a position between reserved brackets of the double tower building, so that a post-compensating space is formed between the middle section and the reserved brackets;
and arranging the embedded block in the rear compensation space, and connecting the embedded block with the reserved bracket and the middle section to form the large truss.
Further, temporary diagonal braces are arranged on two opposite sides of the lower layer frame when the lower layer frame is erected.
Further, when the middle section is lifted, the middle section is subjected to pre-lifting and grading loading, so that the middle section is separated from the jig frame, after the middle section is separated from the jig frame by a preset distance, the middle section is kept stand for observing a preset time, and after the middle section is free from abnormality, the middle section is lifted to a position between the middle section and the reserved bracket of the double tower.
Further, the preset distance is 100mm.
Further, the preset time is 12 hours.
The construction method for the large truss in the middle of the double-tower building has the advantages that the construction method for integrally assembling the large truss on the ground is adopted, the node installation precision can be improved, the welding quality of a steel structure is improved, the overhead welding operation is reduced, and the construction operation safety is guaranteed.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a schematic view of a middle truss of a double tower in accordance with an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a lower rack according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 and 2, the invention provides a construction method of a large truss in the middle of a double tower, comprising the following steps:
s1: the large truss between the middle parts of the double towers 1 is divided into a middle section 2 and a block 3. The length of the block 3 is smaller than the length of the middle section 2. The middle section 2 is divided into an upper layer frame 23, a middle layer frame 22 and a lower layer frame 21.
S2: and constructing the double tower 1, and respectively forming reserved brackets 4 on opposite sides of the middle part of the double tower 1.
Bracket is reserved on an outer frame steel column of the middle truss part of the double tower, and the bracket reservation mainly meets the following two points:
a. in the subsequent process of lifting the middle section, the bracket has no obstruction to the lifting of the middle section of the large truss;
b. there is enough space for welding.
The division of the block mainly takes into account the following three points:
c. the length of the block is adjusted to ensure that the truss is not blocked in the lifting process.
d. The size and weight of the block must be ensured to be mountable.
e. The precise butt joint of the trusses is ensured by adjusting the length of the block.
S3: a plurality of concrete columns 5 are arranged on the ground between the double towers 1, so that the top ends of the concrete columns 5 extend to the upper part of the ground.
S4: a jig frame 7 is set up on the top ends of the plurality of concrete columns 5.
S5: the lower layer 21, the middle layer 22 and the upper layer 23 are mounted on the jig frame 7.
And after the jig frame is arranged on the concrete column, splicing the lower strings of the lower layer frame, and temporarily connecting. And assembling the truss by adopting a unit expansion method.
When the lower frame 21 is erected, temporary diagonal braces 6 are provided on opposite sides of the lower frame 21. Diagonal braces are installed to prevent instability of the lower shelves of the truss. And welding after the lower layer frame of the truss is assembled.
And (3) assembling the lower layer frame, expanding the units to assemble the middle layer, and welding. And after the middle layer frame is laid with the reinforcing support, assembling and welding the upper layer frame are completed.
S6: the middle layer frame 22 is mounted on the lower layer frame 21.
S7: the upper shelf 23 is mounted to the middle shelf 22 to form the middle section 2.
S8: and the middle section 2 is hoisted to the reserved bracket 4 of the double tower 1, so that a post-compensation space is formed between the middle section 2 and the reserved bracket 4.
When the middle section 2 is hoisted, the middle section 2 is pre-lifted and graded loaded, so that the middle section 2 is separated from the jig frame 7, after the middle section 2 is separated from the jig frame 7 by a preset distance, the middle section 2 is stood and observed for a preset time, and after the middle section 2 is free from abnormality, the middle section 2 is hoisted between the middle section 2 and the reserved bracket 4 of the double tower 1.
The preset distance is 100mm.
The preset time is 12 hours.
Specifically, after the lifting device is debugged, all readiness is confirmed, pre-lifting and grading loading is carried out, the whole truss is separated from the spliced jig frame by about 100mm, the stress deformation condition of the structure is observed during the process, and after no abnormality is confirmed, the lifter is mechanically locked and stands for about 12 hours.
And (5) performing comprehensive inspection, measuring elevation of each lifting point and foundation settlement, and performing truss integral lifting operation after confirming that everything is normal.
And when the truss is continuously lifted to be about 200mm away from the design position, regulating down the lifting speed, and measuring the elevation of the truss by a measurer to perform fine adjustment operation.
Reaching the appointed position, the truss is accurately positioned, and the lifting device locks the middle section.
S8: the block 3 is arranged in the rear compensation space, and the block 3 is connected with the reserved bracket 4 and the middle section 2 to form a big truss.
According to the construction method of the large truss in the middle of the double-tower building, the construction method of integrally assembling on the ground is adopted, so that the node installation precision can be improved, the welding quality of a steel structure is improved, the overhead welding operation is reduced, and the construction operation safety is ensured.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (5)
1. The construction method of the large truss in the middle of the double-tower building is characterized by comprising the following steps of:
dividing a large truss between the middle parts of the double-tower building into a middle section and a block, wherein the length of the block is smaller than that of the middle section, and the middle section is divided into an upper layer frame, a middle layer frame and a lower layer frame;
constructing the double-tower building, and respectively forming reserved brackets on opposite sides of the middle part of the double-tower building;
a plurality of concrete columns are arranged on the ground between the double towers, so that the top ends of the concrete columns extend to the upper part of the ground;
erecting jig frames on the top ends of a plurality of concrete columns;
the lower layer frame, the middle layer frame and the upper layer frame are erected on the jig frame;
mounting the middle layer frame on the lower layer frame;
installing the upper shelf on the middle shelf to form the middle section;
hoisting the middle section to a position between reserved brackets of the double tower building, so that a post-compensating space is formed between the middle section and the reserved brackets;
and arranging the embedded block in the rear compensation space, and connecting the embedded block with the reserved bracket and the middle section to form the large truss.
2. The method of constructing a double tower middle truss according to claim 1, wherein temporary diagonal braces are provided on opposite sides of the lower frame when the lower frame is erected.
3. The method according to claim 1, wherein when the middle section is lifted, the middle section is pre-lifted and loaded in stages, so that the middle section is separated from the jig frame, the middle section is kept stand for observing a preset time after being separated from the jig frame by a preset distance, and the middle section is lifted to a position between the middle section and a reserved bracket of the double tower after the middle section is free from abnormality.
4. A method of constructing a double tower middle truss according to claim 3, wherein the predetermined distance is 100mm.
5. The method of constructing a double tower middle truss according to claim 3, wherein the predetermined time is 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310104143.6A CN116122578A (en) | 2023-02-13 | 2023-02-13 | Construction method of large truss in middle of double-tower building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310104143.6A CN116122578A (en) | 2023-02-13 | 2023-02-13 | Construction method of large truss in middle of double-tower building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116122578A true CN116122578A (en) | 2023-05-16 |
Family
ID=86302626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310104143.6A Pending CN116122578A (en) | 2023-02-13 | 2023-02-13 | Construction method of large truss in middle of double-tower building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116122578A (en) |
-
2023
- 2023-02-13 CN CN202310104143.6A patent/CN116122578A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107476581B (en) | Hoisting and mounting method for steel structure double-layer overhanging structure | |
| CN114197634B (en) | Construction method of high-rise conjoined large steel structure installation monitoring system | |
| CN102691420A (en) | Installation and construction method for multilayer large-span steel truss | |
| CN112081016A (en) | Lifting and folding device for bridge arch rib | |
| CN112195799A (en) | Lifting closure construction method for arch rib of arch bridge | |
| CN106759909B (en) | Bearing structure system and its construction method are hung up under one kind | |
| JPH0721165B2 (en) | How to construct a concrete cable-stayed bridge | |
| CN114134990A (en) | Installation and uninstallation method of large-span overhanging corridor | |
| CN113175089A (en) | Construction method of large-span heavy cantilever truss | |
| CN104775363A (en) | Assembling method of upper tower column reinforcing steel bar segment | |
| CN116122578A (en) | Construction method of large truss in middle of double-tower building | |
| JP7041463B2 (en) | How to build a building | |
| CN104818675B (en) | The spelling method of reinforcing bar sections | |
| CN113833126A (en) | Roof installation method | |
| CN108797350B (en) | Tower column inner and outer stiff skeleton device and construction method thereof | |
| CN114961297B (en) | Conjoined structure lifting device for preventing tower from side-shifting and lifting method thereof | |
| CN114575253B (en) | Arch rib mounting system | |
| CN114197632B (en) | Aerial large-scale steel truss connected structure and construction method thereof | |
| CN114277690B (en) | Assembling method for reinforced skeleton outsourced concrete arch rib | |
| CN114197633B (en) | Construction method of large-span high-altitude annular truss lifting and mounting structure | |
| CN116905828A (en) | Construction method suitable for steel structure corridor | |
| CN117703094A (en) | Large-span overhanging type multi-layer truss high-altitude sectional installation construction method | |
| CN117468728A (en) | Steel truss girder construction system and construction method | |
| CN116427553A (en) | Inverted hanging construction method for cross-layer steel truss | |
| CN117627374A (en) | Large-span truss anti-sedimentation installation construction 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 |