CN113404309B

CN113404309B - Large-span dome structure spiral lifting system and method

Info

Publication number: CN113404309B
Application number: CN202110601977.9A
Authority: CN
Inventors: 陈建敏; 彭玉培; 彭清; 付诗禧; 石高扬; 谢强
Original assignee: Super High Transmission Co of China South Electric Net Co Ltd
Current assignee: Super High Transmission Co of China South Electric Net Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-05-17
Anticipated expiration: 2041-05-31
Also published as: CN113404309A

Abstract

The invention discloses a spiral lifting system and a method for a large-span dome structure, which relate to the field of integral lifting of buildings, bridges and large-span equipment and comprise a plurality of lifting devices, wherein one ends of two adjacent lifting devices are close to or overlapped along the length direction of a truss structure and staggered for a certain distance along the width direction of the truss structure to form a structure extending upwards in a bending way; the lifting device comprises: two fixed platforms, one-way slope guide rail, propulsion slider and hydraulic pressure propelling machine. The scheme can solve the safety of the large-span dome structure in the lifting process and break through the limitation of the traditional lifting in height.

Description

Large-span dome structure spiral lifting system and method

Technical Field

The invention relates to the field of integral lifting of buildings, bridges and large-span equipment, in particular to the field of integral lifting with large span, large volume, large mass and lifting elevation of more than 50m, and particularly relates to a spiral lifting system and method for a large-span dome structure.

Background

With the improvement of national economy, more and more large-span structures are designed to meet the high-level requirements of people on building space utilization, and the large-span structures have the characteristics of various building forms, complex structural systems, large rigidity, light weight and the like. In order to construct these large span structures, various efficient construction methods are studied and applied, typically such as an integral lifting method, a block and integral sliding method, a climbing dome method and an integral expanding method, which are applied to rigid large span space steel structures, and a cable tension construction, which is applied to semi-rigid and flexible structural systems, etc. The construction process of the large span space steel structure has a plurality of states different from the final stress mode; before the final stress condition is reached, the structure may overturn, collapse or be damaged locally due to improper construction quality or stress.

At present, the large-span structure in China is lifted by a tower crane, a lifter and other large equipment from the upper part and then translated to a specified position. Such a lifting scheme can satisfy the lifting of most equipment and roof trusses. However, as society develops, people have higher and higher requirements on large building space, and it is inevitable to construct large-span and large-mass dome structures, and if the structures are constructed at the roofing elevation, the construction quality and progress of the structures are difficult to ensure, and safety accidents are easily caused. In the whole promotion scheme, if adopt traditional promotion scheme, then this kind of large-span and big quality's structure is used for promoting the in-process to be difficult to the collaborative work and takes place the unstability easily, topples even, directly leads to personal and property safety.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a spiral lifting system and method for a large-span dome structure, which can not only solve the safety of the large-span dome structure in the lifting process, but also break through the limitation of the traditional lifting in height.

To achieve the above object, the present invention provides a method

A spiral lifting system of a large-span dome structure is arranged on a truss structure and comprises a plurality of lifting devices, wherein one ends of two adjacent lifting devices are close to or overlapped along the length direction of the truss structure and staggered for a certain distance along the width direction of the truss structure to form a structure extending upwards in a bending manner;

the lifting device comprises:

the two fixed platforms are respectively arranged on the side edges of the two vertical truss columns opposite to the truss structures, and the two fixed platforms are arranged on different horizontal heights;

the two ends of the unidirectional slope guide rail are respectively connected with the two fixed platforms;

the propelling slide block is arranged on the one-way slope guide rail;

and the hydraulic propelling machine drives the propelling sliding block to move along the one-way slope guide rail through a propelling rod.

The helical lift system of a large-span dome structure as described above, further comprising:

a plurality of vertical truss columns are arranged on the truss,

and the cover plate is covered and installed at the top end of the truss column.

The large-span dome structure helical lift system as described above, further,

the lifting device further comprises:

and the lifting guide rail is arranged on the inner side surface of the truss column, and the fixed platform is arranged on the lifting guide rail.

The spiral lifting system of the large-span dome structure further comprises a track support frame connected to the truss column and used for supporting the one-way slope guide rail.

The spiral lifting system for a large-span dome structure as described above further comprises a plurality of diagonal braces, which are installed at the bottom ends of the truss columns for maintaining the stability of the truss structure.

The spiral lifting system for the large-span dome structure further comprises a structural fixing rod piece for connecting the lifted piece, wherein the structural fixing rod piece is a circular rod piece which contains a bearing and can rotate, and the circular rod piece can telescope along the length direction of the rod so as to be conveniently pushed on the one-way slope guide rail.

A method of helical lifting of a large span dome structure for use in a system as claimed in any one of the preceding claims, comprising:

installing a fixed rod piece around the lifted piece, wherein the fixed rod piece is installed at a main stress part and ensures that the structure is uniformly stressed in the lifting process;

moving the lifted member closer to the system and placing the structural fixation bar over the propulsion track;

reasonably dividing the lifting height, and determining the position of a bearing fixed platform;

starting the hydraulic propelling machine to enable the propelling rod to drive the propelling slide block to ascend on the one-way slope guide rail, and further enable the structure fixing rod to roll and ascend on the one-way slope guide rail until the fixing platform reaches the high position;

and extending the structural fixing rod piece, starting the hydraulic propelling machine by using the connected lifting device at the other side, driving the propelling slide block to ascend on the one-way slope guide rail by the propelling rod piece, and further enabling the structural fixing rod piece to roll and ascend on the one-way slope guide rail until reaching the next elevation fixing platform.

Compared with the prior art, the invention has the beneficial effects that: the lifting method improves the traditional large-span structure lifting scheme from lifting to propelling lifting, thereby getting rid of the limitation of the quality and the volume of the lifted structure, and the lifting height can be increased along with the lifting of the lifting support, thus ensuring that the propelling type lifting mode is not limited by the height of the lifted structure and the safety and the stability in the lifting process.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, a traditional large-span structure lifting scheme is improved from lifting to pushing lifting through a spiral lifting system, so that the limitations of the quality, the volume and the height of a lifted structure are improved, the time is saved, and the safety degree is improved. Thereby the stability of big quality and bulky structure in promoting the work progress, and the security to and because the promotion height restriction scheduling problem that the promotion rack brought have been solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a layout view of a spiral lifting system of a large-span dome structure according to an embodiment of the present invention;

FIG. 2 is a block diagram of a spiral lifting system for a large span dome structure;

FIG. 3 is a structural component view of the propulsion system;

FIG. 4 is a diagram of the position of a structural fixation rod during lifting;

fig. 5 is a view showing the mounting of the pusher shoe to the pusher track.

Wherein: 1. a bulky structural member; 2. structurally securing the rod member; 3. a lifting system; 4. lifting the support; 5. fixing the cover plate; 6. lifting the guide rail; 7. a fixed platform; 8. a one-way ramp guide rail; 9. a rail bracket; 10. a hydraulic pusher; 11. advancing the rod; 12. the slider is advanced.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example (b):

it should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 5, fig. 1 is a layout view of a spiral lifting system of a large-span dome structure according to an embodiment of the present invention; FIG. 2 is a block diagram of a spiral lifting system for a large span dome structure; FIG. 3 is a structural component view of the propulsion system; FIG. 4 is a diagram of the position of a structural anchoring bar during lifting; fig. 5 is a view showing the mounting of the pusher shoe to the pusher track.

As shown in fig. 1, a large span dome structure helical lifting scheme is used to lift large mass, large volume structural members 1 with structural rods 2 used to connect the structure to a lifting system 3. The structural fixing rod 2 is a circular rod with a rotatable bearing, and can extend and retract along the length direction of the rod so as to be conveniently pushed on two inclined guide rails. The propulsion function of the lifting system causes the structural fixing bars to roll up along the propulsion tracks 8, so that the lifted structure 1 rises in a spiral manner as a whole.

As shown in fig. 2, a complete large-span dome structure spiral lifting scheme includes a structure fixing rod 2, a lifting support 4 fixed at the bottom, a top fixing cover plate 5, a lifting guide rail 6 on the lifting support, a fixed platform 7 capable of bearing force, two one-way slope guide rails 8, a guide rail support 9, two lifting hydraulic thrusters 10, a telescopic thruster 11, and a thrust slider 12 on a track. The bottom of the lifting support 4 is fixed on the ground, a plurality of inclined struts are selected according to actual engineering conditions to ensure the stability of the structure in the lifting process, the top of the lifting support 4 is fixed by a cover plate 5, a lifting guide rail 6 for lifting a power propulsion system is arranged on a relatively vertical surface inside the truss, and the force bearing platform 7 is fixed on the other side of the lifting support 4 and changes height along with the lifting of the structure.

As shown in fig. 3, 4 and 5, the propulsion system is composed of a hydraulic propulsion machine 10, a propulsion track 8, a propulsion rod 11, a propulsion slide 12 and a track support system 9. The propelling rod 11 and the propelling slide block 12 are fixedly connected together, and the hydraulic machine enables the propelling rod 11 to extend to push the slide block 12 to ascend on a propelling track according to a hydraulic principle.

The spiral lifting scheme of the large-span dome structure is constructed by the following steps:

the first step is as follows: the fixed rod pieces 2 are arranged around the lifted structure, and the fixed rod pieces are arranged at the main stress parts, and the structure is ensured to be uniformly stressed in the lifting process.

The second step is that: a plurality of lifting systems 3 (schematically shown in fig. 1) are moved by means of bottom pulleys over the first mounted structural fixing bar 2, and the positions of the lifting systems 3 are adjusted so that the structural fixing bar 2 is placed on the one-way slope guide rail 8, as shown in fig. 2.

The third step: the lifting bracket 4 is fixed, and necessary inclined supports are installed. And reasonably dividing the lifting height, and determining the position of the bearing fixed platform.

The fourth step: meanwhile, the hydraulic propelling machine 10 is started, so that the propelling rod pushes the sliding block to ascend on the inclined guide rail, and further, the structure fixing rod rolls and ascends on the inclined rail to reach the next elevation fixing platform.

And fifthly, vertically lifting the hydraulic pusher 10, the one-way slope guide rail 8, the guide rail bracket 9, the pushing rod piece 11 and the pushing slide block 12 to the next layer of elevation along the lifting guide rail 6 and fixing.

Sixthly, extending the structure fixing rod 2, and rotating the lifted structure to the next fixed elevation by using a propulsion system on the other side.

And seventhly, repeating the fourth, fifth and sixth steps to enable the structure to finally reach a preset elevation, and performing the next construction after fixing.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.

Claims

1. A spiral lifting system of a large-span dome structure is arranged on a truss structure and is characterized by comprising a plurality of lifting devices, wherein one ends of two adjacent lifting devices are close to or overlapped along the length direction of the truss structure and are staggered for a certain distance along the width direction of the truss structure to form a structure which is bent and extends upwards;

the lifting device comprises:

the propelling slide block is arranged on the one-way slope guide rail;

the hydraulic propelling machine drives the propelling sliding block to move along the one-way slope guide rail through a propelling rod;

the truss structure includes:

a plurality of vertical truss columns are arranged on the truss,

a cover plate which is covered and installed on the top end of the truss column;

the lifting device further comprises:

a lifting guide rail installed at an inner side surface of the truss column and on which the fixed platform is installed;

the lifting device is characterized by further comprising a structure fixing rod piece used for connecting the lifted piece, wherein the structure fixing rod piece is a circular rod piece which is provided with a bearing in a rotating mode and can stretch and retract along the length direction of the rod so as to be convenient to push on the one-way slope guide rail.

2. The spiral lift system of claim 1, further comprising a track support frame connected to said truss column for supporting said unidirectional ramp guide.

3. The large-span dome structure helical lifting system of claim 1, further comprising a plurality of braces mounted to the bottom end of the truss column for maintaining stability of the truss structure.

4. A method of helical lifting of a large span dome structure, for use in a system according to any of claims 1 to 3, comprising:

mounting a structure fixing rod piece around the lifted piece, wherein the structure fixing rod piece is mounted at a main stress part and ensures that the structure is uniformly stressed in the lifting process;