CN218952846U - Lifting structure of large-span steel truss - Google Patents
Lifting structure of large-span steel truss Download PDFInfo
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- CN218952846U CN218952846U CN202222561078.3U CN202222561078U CN218952846U CN 218952846 U CN218952846 U CN 218952846U CN 202222561078 U CN202222561078 U CN 202222561078U CN 218952846 U CN218952846 U CN 218952846U
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- truss
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The utility model discloses a lifting structure of a large-span steel truss, which comprises a middle assembly section and truss preassembling sections connected to two ends of the middle assembly section, wherein the lifting structure comprises: the truss preassembling section is fixedly arranged on the supporting column body as a lifting bracket corresponding to the two ends of the middle assembling section; the lifting device is used for lifting the middle assembly section, the lifting device is fixedly installed on the top surface of the truss preassembly section and relatively close to the end position of the middle assembly section, and the lifting device is wound with a steel strand for connecting the middle assembly section. The truss support is detachably connected to the supporting column, so that the construction speed is effectively increased, the construction period is saved, and the construction quality is guaranteed.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a lifting structure of a large-span steel truss.
Background
For the whole lifting construction of a large-span steel truss structure, the conventional construction method is to design a lifting support according to calculation and construction simulation analysis, install the lifting support and assemble the whole steel truss on the ground at the same time, integrally lift the steel truss after the assembly is completed, install truss supports and embedded rod pieces after the lifting is in place, integrally unload the truss after the welding is completed, and finally dismantle the lifting support. The conventional construction method has higher requirements on construction working conditions, is unfavorable for shortening the construction period, has higher cost and has limited application range.
Disclosure of Invention
The utility model aims to provide a lifting structure of a large-span steel truss, which utilizes pre-assembled sections on two sides of the steel truss as a lifting structure, so that the construction speed is effectively increased, the construction period is saved, and the construction quality is ensured.
According to the lifting structure of the large-span steel truss provided by the utility model, the steel truss comprises a middle assembly section and truss preassembling sections connected to two ends of the middle assembly section, and the lifting structure comprises:
the truss preassembling section is fixedly arranged on the supporting column body as a lifting bracket corresponding to the two ends of the middle assembling section;
the lifting device is used for lifting the middle assembly section, is fixedly arranged on the top surface of the truss preassembly section and is relatively close to the end part position of the middle assembly section, and is wound with a steel strand for connecting the middle assembly section;
and the truss support is detachably connected to the supporting column body.
The truss preassembly sections connected to the two ends of the middle assembly section of the steel truss are used as a part of a lifting structure, after the middle assembly section of the large-span steel truss is lifted, the truss preassembly sections are connected with the middle assembly section in an adaptive manner, and the middle assembly section is connected with the truss preassembly section through the embedded rod pieces, so that the purpose of lifting the large-span steel truss is achieved, and meanwhile, the construction speed can be increased.
Further, the truss preassembling section comprises an upper chord beam and a lower chord beam which are respectively and correspondingly connected with the middle assembling section, and a plurality of web members are connected between the upper chord beam and the lower chord beam.
Further, a first reinforcing rod piece is fixedly arranged between the upper chord beam and the lower chord beam, and a second reinforcing rod piece is fixedly arranged between the lower chord beam and the supporting column body respectively.
The integral structure is firmer by arranging the first reinforcing rod piece and the second reinforcing rod piece.
Further, a reinforcing pull rod is fixedly arranged between the upper chord beam and the supporting column body.
Therefore, the overall mechanical property of the lifting structure can be further improved.
Further, the support column body is a concrete column, and comprises a plurality of support parts which are respectively connected with the second reinforcement rod piece, the reinforcement pull rod and the truss support, wherein the support parts are provided with a plurality of embedded parts which are used for connecting the second reinforcement rod piece, the reinforcement pull rod and the truss support in a detachable mode.
The embedded part is arranged to be convenient for connecting the second reinforcing rod piece, the reinforcing pull rod and the truss support.
Further, a lifting platform beam detachably connected with the upper chord beam is fixedly arranged at the bottom of the lifting device.
The lifting platform beam is fixedly arranged at the bottom of the lifting device, so that the lifting device can be prevented from being in direct contact with the upper chord beam, and the lifting platform beam can also replace the upper chord beam to bear most of force.
Further, the lifting device is hydraulically driven.
Further, the number of the web members is two, namely a first web member and a second web member, the first end of the first web member and the first end of the first reinforcement member are welded together on the upper chord, the first end of the second web member is welded together with the second end of the second web member and welded together on the lower chord, and the second end of the first reinforcement member and one end of the second reinforcement member are welded together on the lower chord.
The first web member, the first reinforcement member and the lower chord beam form a triangular structure, and the first web member, the second web member and the upper chord beam form a triangular structure, so that the overall mechanical property of the lifting structure can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a lifting structure of a middle splicing section of a steel truss according to an embodiment of the utility model.
Fig. 2 is an enlarged view of the truss pre-installed section according to an embodiment of the present utility model.
In the figure, 1-an intermediate assembly section; 2. truss preassembling section; 21-upper chord beam; 22-lower chord beam; 3-lifting means; 4-steel strand wires; 5-truss support; 6-web members; 61-a first web member; 62-second web member; 7-a first reinforcement bar; 8-a second reinforcement bar; 9-reinforcing tie rods; 10-an embedded part; 11-lifting a platform beam; 12-support columns.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 and 2, there is shown a lifting structure of a large-span steel truss of the present utility model, the steel truss including a middle assembled section 1 and truss pre-assembled sections 2 connected to both ends of the middle assembled section 1, the lifting structure comprising:
the truss preassembling section 2 is fixedly arranged on the supporting column body 12 as a lifting bracket corresponding to the two ends of the middle assembling section 1;
the lifting device 3 is used for lifting the middle assembly section 1, the lifting device 3 is fixedly arranged on the top surface of the truss preassembly section 2 and is relatively close to the end position of the middle assembly section 1, and the lifting device 3 is wound with a steel strand 4 used for connecting the middle assembly section 1;
and the truss support 5 is detachably connected to the supporting column body.
The truss preassembly section 2 connected to the two ends of the steel truss middle assembly section 1 is used as a part of a lifting structure, after lifting operation is carried out on the large-span steel truss middle assembly section 1, the truss preassembly section 2 is connected with the middle assembly section 1 in an adapting mode, and the middle assembly section 1 is connected with the truss preassembly section 2 through the embedded rod piece in a corresponding connection mode, so that the purpose of lifting operation of the large-span steel truss is achieved, and meanwhile construction speed can be accelerated.
The truss pre-assembly section 2 comprises an upper chord beam 21 and a lower chord beam 22 which are respectively and correspondingly connected with the middle assembly section 1, and a plurality of web members 6 are connected between the upper chord beam 21 and the lower chord beam 22.
The first reinforcement rod piece 7 is further fixedly arranged between the upper chord piece 21 and the lower chord piece 22, the second reinforcement rod piece 8 is respectively fixedly arranged between the lower chord piece 22 and the supporting column body 12, and the integral structure is more stable by arranging the first reinforcement rod piece 7 and the second reinforcement rod piece 8.
Reinforcing pull rods 9 are fixedly arranged between the upper chord beam 21 and the supporting column body, so that the integral mechanical property of the lifting structure can be further improved.
The supporting column 12 is a concrete column, and the supporting column 12 comprises a plurality of supporting parts which are respectively connected with the second reinforcing rod piece 8, the reinforcing pull rod 9 and the truss support 5, wherein the supporting parts are provided with a plurality of embedded parts 10 which are used for connecting the second reinforcing rod piece 8, the reinforcing pull rod 9 and the truss support 5, and the truss support 5 and the embedded parts 10 can be connected through bolts or other detachable connections.
The second reinforcing rod piece 8, the reinforcing pull rod 9 and the truss support 5 can be conveniently connected by arranging the embedded part 10.
The bottom of the lifting device 3 is fixedly provided with a lifting platform beam 11 detachably connected with the upper chord beam 21, and the lifting platform beam 11 and the upper chord beam 21 can be connected by bolts or other detachable connection.
The lifting platform beam 11 is fixedly arranged at the bottom of the lifting device 3, so that the lifting device 3 can be prevented from being in direct contact with the upper chord beam 21, and the lifting platform beam 11 can also bear most of force instead of the upper chord beam 21.
The lifting device 3 is driven hydraulically.
The number of the web members 6 is two, namely a first web member 61 and a second web member 62, the first end of the first web member 61 and the first end of the first reinforcement member 7 are welded together on the upper chord member 21, the first end of the second web member 62 is welded on the upper chord member 21, the second end of the first web member 61 and the second end of the second web member 62 are welded together on the lower chord member 22, and the second end of the first reinforcement member 7 and one end of the second reinforcement member 8 are welded together on the lower chord member 22.
The first web member 61 forms a triangle structure with the first reinforcement rod member 7 and the lower bridge 22, and the first web member 61, the second web member 62 and the upper bridge 21 form a triangle structure, thereby improving the overall mechanical properties of the lifting structure.
The working principle of the utility model comprises:
selecting a steel truss lifting area;
the middle assembling section 1 of the steel truss and truss preassembling sections 2 positioned at two sides of the middle assembling section 1 are spliced and installed in a lifting area, and the truss preassembling sections 2 at two sides are respectively used as a part of a lifting structure, in the embodiment, the middle assembling section 1 and the truss preassembling sections 2 also comprise an upper chord beam 21 and a lower chord beam 22 which can be mutually connected in an adaptive manner, and a plurality of web members are welded between the upper chord beam 21 and the lower chord beam 22;
the support columns 12 are poured at the two ends of the lifting area, meanwhile, embedded parts 10 are arranged on the support parts of the support columns 2, and the end parts of the embedded parts extend out of the support columns 12 to be convenient to connect;
truss supports 5 are respectively arranged at the tops of the support columns 12 at the two ends, and the truss supports 5 are detachably connected with the embedded part 10;
the truss pre-assembled section 2 is arranged on the opposite supporting columns 12 as a part of the lifting structure, the lower chord beam 22 is detachably connected with the truss support 5, and the truss pre-assembled section is supported by adopting a temporary lattice column structure;
the lifting device 3 is detachably arranged on the upper chord beam 21;
the upper chord beam 21 and the embedded part 10 on the supporting column body 3 are respectively provided with a second reinforcing rod piece 8 and a reinforcing pull rod 9;
removing the lattice column structure;
lifting the middle assembly section 1 in a lifting area to the same horizontal position as the truss pre-assembly section 2, so that the middle assembly section 1 corresponds to the truss pre-assembly section 2;
the embedded rod piece is respectively connected with the middle assembly section and the truss preassembling section.
According to on-the-spot actual conditions, transportation condition and mechanical properties etc. carry out reasonable segmentation to the steel truss, divide into the middle section of assembling 1 and the pre-installation section 2 of both sides, through utilizing truss pre-installation section 2 to set up on truss support 5 to this is as the part of promotion structure, can effectively guarantee the structural stability of promotion process, adopts first reinforcement member 7, second reinforcement member 8 and reinforcement pull rod 9 to consolidate between string beam 21 and the built-in fitting simultaneously, can effectively accelerate construction speed, can guarantee the security of promotion construction again.
In this embodiment, temporary supporting lattice columns are set up around the lifting structure, installed in the form of high-altitude parts, sequentially installed with the lower bridge 22, the upper bridge 21 and the web members 6 connecting the two, then installed with the first reinforcing rods 7, the second reinforcing rods 8 and the reinforcing tie rods 9, and removed after completion.
In this embodiment, during construction of the middle assembly section 1, firstly, paying off is performed at the plane position of the completed floor truss, the lower chord beam 22 is installed to support the jig frame, the lower chord beam 22 is assembled (the middle pre-arching value is considered according to L/1000, and the design requirement is met), the upper chord beam 21 is installed to support the jig frame, the upper chord beam 21 and the web member 6 are assembled (the middle pre-arching value is considered according to L/1000, and the design requirement is met), after welding is completed, after the weld inspection is qualified, the middle assembly section 1 and the lifting device 3 are respectively provided with an upper lifting point and a lower lifting point, a lower lifting point temporary joist, a reinforcing rod piece and the like, the upper lifting point and the lower lifting point are connected through a special bottom anchor and a special steel strand, and the middle assembly section 1 is lifted to the design installation elevation by the lifting device 3 driven by hydraulic pressure and is in butt joint with the truss pre-assembly section 2.
The setting of the embedded part 10 specifically comprises the steps of binding structural steel bars of the supporting column body 12, installing the embedded part 10 on the supporting column body 3 after the template is fixed, and compacting concrete pouring at the bottom of the embedded part 10 to ensure that the anchor bars and the structure of the embedded part 10 are stressed jointly, thereby meeting the lifting construction requirement.
After the lifting of the steel truss middle assembly section 1 is completed, the connection between the steel truss middle assembly section 1 and the two-side truss preassembly sections 2 is completed through the embedded rod pieces, the load is increased on the whole upper portion of the steel truss, the steel truss is downwards deflected due to the load increase, firstly, the fixing of the truss support 5 and the embedded part 10 is released, the downwards deflected deformation is avoided, the force is transmitted to the supporting column 3 through the truss support 5 and the embedded part 10, and the concrete column is torn.
After the integral deformation is stabilized, the truss support 5 and the embedded part 10 are fixed, the truss support 5 and the embedded part 10 are subjected to girth welding on four sides and permanently fixed, and the truss support 5 and the embedded part 10 are permanently fixed through girth welding on four sides, so that the truss support is kept stable for a long time.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "vertical", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.
Claims (8)
1. The utility model provides a hoisting structure of large-span steel truss, its characterized in that, steel truss include middle section of assembling and connect in middle truss pre-installation section of assembling section both ends, hoisting structure includes:
the truss preassembling section is fixedly arranged on the supporting column body as a lifting bracket corresponding to the two ends of the middle assembling section;
the lifting device is used for lifting the middle assembly section, is fixedly arranged on the top surface of the truss preassembly section and is relatively close to the end part position of the middle assembly section, and is wound with a steel strand for connecting the middle assembly section;
and the truss support is detachably connected to the supporting column body.
2. The lifting structure of a large-span steel truss according to claim 1, wherein the truss pre-assembly section comprises an upper chord beam and a lower chord beam which are respectively and correspondingly connected with the middle assembly section, and a plurality of web members are connected between the upper chord beam and the lower chord beam.
3. The lifting structure of the large-span steel truss according to claim 2, wherein a first reinforcement rod is further fixedly arranged between the upper chord and the lower chord, and a second reinforcement rod is respectively fixedly arranged between the lower chord and the support column.
4. A lifting structure of a long span steel truss as recited in claim 3, wherein a reinforcing tie rod is fixedly provided between the upper chord and the support column.
5. The lifting structure of a long span steel truss as recited in claim 4, wherein the supporting column is a concrete column, the supporting column includes a plurality of supporting portions respectively connecting the second reinforcing bar, the reinforcing tie bar, and the truss support, the supporting portions being provided with a plurality of embedments for connecting the second reinforcing bar, the reinforcing tie bar, and the truss support.
6. The lifting structure of the large-span steel truss as recited in claim 2, wherein a lifting platform beam detachably connected with the upper chord beam is fixedly arranged at the bottom of the lifting device.
7. The lifting structure of a long span steel truss as recited in claim 1, wherein the lifting device is hydraulically driven.
8. The lifting structure of the long-span steel truss of claim 5, wherein the number of the web members is two, namely a first web member and a second web member, the first end of the first web member and the first end of the first reinforcement member are welded together on the upper chord, the first end of the second web member is welded together on the upper chord, the second end of the first web member and the second end of the second web member are welded together on the lower chord, and the second end of the first reinforcement member and the one end of the second reinforcement member are welded together on the lower chord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222561078.3U CN218952846U (en) | 2022-09-27 | 2022-09-27 | Lifting structure of large-span steel truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222561078.3U CN218952846U (en) | 2022-09-27 | 2022-09-27 | Lifting structure of large-span steel truss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218952846U true CN218952846U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222561078.3U Active CN218952846U (en) | 2022-09-27 | 2022-09-27 | Lifting structure of large-span steel truss |
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| CN (1) | CN218952846U (en) |
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2022
- 2022-09-27 CN CN202222561078.3U patent/CN218952846U/en active Active
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