CN109113182B - Cable net partition circulating lifting installation method of cable bearing grid structure - Google Patents
Cable net partition circulating lifting installation method of cable bearing grid structure Download PDFInfo
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- CN109113182B CN109113182B CN201811066513.7A CN201811066513A CN109113182B CN 109113182 B CN109113182 B CN 109113182B CN 201811066513 A CN201811066513 A CN 201811066513A CN 109113182 B CN109113182 B CN 109113182B
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- cable
- lifting
- radial
- arc top
- tooling
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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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- 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
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3583—Extraordinary methods of construction, e.g. lift-slab, jack-block using permanent tensioning means, e.g. cables or rods, to assemble or rigidify structures (not pre- or poststressing concrete), e.g. by tying them around the structure
Abstract
The invention provides a cable net partitioned circulating lifting installation method of a cable bearing grid structure, wherein a cable net comprises an oval ring cable and a plurality of radial cables which are connected with the ring cable at intervals, the method comprises the steps of selecting the joint of the ring cable and each radial cable as a vertical hanging lifting point or a radial inclined pulling lifting point, arranging the vertical hanging lifting points and the radial inclined lifting points alternately, and installing a first tooling cable at each vertical hanging lifting point; installing a second tool on the radial cable of each radial inclined lifting point; and dividing the cable net into a first arc top area, a second arc top area and a diagonal area according to the deformation trend and the rule of the cable net in the lifting process, and circularly lifting the ring cables and the radial cables in each area in an installation optimized sequence until the cable net is lifted to the design height. The invention solves the problems of low lifting efficiency and poor safety of the guy cable of the cable bearing grid structure by adopting the traditional lifting and mounting mode.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a cable net partition circulating lifting installation method of a cable bearing grid structure.
Background
The cable-supported grid structure is a novel prestressed space steel structure in recent years, generally comprises an upper grid structure and a lower cable-rod system, and the main rigidity of the structure is established by the prestress tension of a stay cable. The lower cable-strut system generally consists of a looped cable, a radial cable and a strut. The stay bar generally completes the installation work together with the steel structure. The inhaul cable (ring cable and radial cable) is easy to change the position and shape of the inhaul cable by adopting a traditional hoisting and lifting installation mode, so that the inhaul cable collides with a jig frame, the lifting efficiency is low, and the safety is low.
Disclosure of Invention
In order to overcome the defects in the prior art, a cable net partition circulating lifting installation method of a cable bearing grid structure is provided so as to solve the problems of low lifting efficiency and poor safety when a traditional lifting installation mode is adopted for inhaul cables of the cable bearing grid structure.
In order to achieve the purpose, the cable net partition circulating lifting installation method of the cable bearing grid structure is provided, the cable net comprises an oval ring cable and a plurality of radial cables connected to the ring cable at intervals, and the cable net partition circulating lifting installation method comprises the following steps:
s1, selecting the joint of the ring cable and each radial cable as a vertical lifting point or a radial inclined lifting point, wherein the vertical lifting points and the radial inclined lifting points are alternately arranged;
s2, providing a first tooling cable, and installing the first tooling cable at each vertical lifting point;
s3, providing a second tooling cable, and installing the second tooling cable on the radial cable of each radial inclined lifting point;
s4, dividing the cable net into two opposite first arc top areas, two opposite second arc top areas and a diagonal area, wherein the diagonal area is located between the first arc top area and the second arc top area;
s5, vertically lifting the first tooling cable in the second first arc top area, so that the vertical lifting point in the second first arc top area is lifted by 1 vertical lifting step;
s6, obliquely pulling the second tooling cable in each diagonal zone, so that the radial cables of the radial oblique lifting points in the diagonal zones are tensioned;
s7, vertically lifting the first tooling cable in the second arc top area, so that the vertical lifting point in the second arc top area is lifted by 1 vertical lifting step;
s8, obliquely lifting the second tooling cable in the second arc top area, so that the radial cable of the radial oblique lifting point in the second arc top area is tensioned;
s9, vertically lifting the first tooling cable in each diagonal zone to enable the vertical lifting point in each diagonal zone to be lifted by 1 vertical lifting step distance;
s10, obliquely lifting the second tooling cable in the second first arc top area, so that the radial cables of the radial oblique lifting points in the second first arc top area are tensioned;
and S11, repeating the steps S5-S10 until the cable net is lifted to the designed elevation.
Further, the method also comprises the following steps:
after the cable net is lifted to a designed elevation, providing a plurality of first cable clamps, and sequentially installing the first cable clamps on the diagonal area, the first arc top area and the second arc top area on the looped cable;
providing a plurality of second cable clamps, and sequentially installing the second cable clamps on the radial cable from the first end of the radial cable close to the annular cable to the second end of the radial cable far from the annular cable.
Further, the step of obliquely pulling the second tooling cable in each diagonal zone includes applying an oblique pulling force to the second tooling cable in each diagonal zone, where the oblique pulling force is obliquely upward and outward along a connection line of two end points corresponding to the second tooling cable.
Further, the step of vertically lifting the first tooling cable in the second first arc top area includes applying a vertical lifting force to the first tooling cable in the second first arc top area, the vertical lifting force being directed vertically upward.
Further, the first arc top area is located in the area where the large diameter of the elliptical ring cable is located, and the second arc top area is located in the area where the small diameter of the elliptical ring cable is located. The method for circularly lifting and installing the cable net in the cable bearing grid structure has the advantages that the areas are divided according to the deformation trend and rule of the cable net in the lifting process, the areas are distributed and lifted, the combined lifting method of 'vertical lifting and inclined pulling' is adopted, the vertical lifting gradually improves the height of the areas of the cable net, the vertical lifting ensures the position and the shape of the cable net to be kept, the circular lifting of the vertical lifting and the inclined pulling is beneficial to reducing the mounting difficulty of the cable net and improving the mounting efficiency and the mounting safety of the cable net, the use amount of auxiliary tools in the mounting process can be reduced, and the comprehensive benefit is good.
Drawings
Fig. 1 is a schematic structural view of a cable net according to an embodiment of the present invention.
Fig. 2 is a schematic view of a partition of a cable network according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Fig. 1 is a schematic structural diagram of a cable net according to an embodiment of the present invention, and fig. 2 is a schematic partition diagram of the cable net according to the embodiment of the present invention.
Referring to fig. 1 and 2, the cable net is composed of an elliptical one-loop cable 11 and a plurality of radial cables 12 connected to the loop cable 11. A plurality of radial cords 12 are provided at intervals in the looping direction of the looped cable 11. The invention provides a cable net partition circulating lifting installation method of a cable bearing grid structure, which comprises the following steps:
s1: the joint of the ring cable 11 and each radial cable 12 is selected as a vertical hoisting point or a radial inclined hoisting point. And the vertical hanging and lifting points and the radial inclined lifting points are alternately arranged.
S2: providing a first tooling cable 3, and installing the first tooling cable 3 at each vertical hanging and lifting point A.
S3: and providing a second tooling cable, and installing the second tooling cable on the radial cable 12 of each radial inclined lifting point B. Specifically, the first end of the second tooling cable is connected to the end of the radial cable 12 at the radial inclined lifting point B, which is far away from the looped cable 11. And (3) overlapping the second end of the second tooling cable on a ring beam (not shown in the attached drawing of the specification) of the cable bearing grid structure.
S4: according to the deformation trend and rule in the lifting process of the cable net, the cable net is divided into two opposite first arc top areas (I-1 and I-2), two opposite second arc top areas (III-1 and III-2) and opposite angle areas (II-1, II-2, II-3 and II-4). The diagonal zone is located between the first and second arc apex zones.
Specifically, the elliptical looped cable has a large diameter region and a small diameter region. The major diameter and the minor diameter of the elliptical ring cable are the major axis and the minor axis of the elliptical ring cable. The major axis of the elliptical ring cable is a connecting line between two points which are farthest away from each other on the ellipse, and the minor axis of the elliptical ring cable is a connecting line between two points which are closest to each other on the ellipse. The first arc top area is located in the area where the large diameter of the oval ring cable is located, and the second arc top area is located in the area where the small diameter of the oval ring cable is located.
S5: and vertically lifting the first tooling cables 3 in the two first arc top areas to ensure that the vertical lifting points A in the two first arc top areas are lifted by 1 vertical lifting step.
Specifically, a vertical lifting force is applied to the first tooling cables 3 in the two first arc top areas, and the vertical lifting force is vertically upward, so that the vertical lifting points A in the two first arc top areas are lifted by 1 vertical lifting step.
The vertical lifting step is to divide the lifting of the cable net into a plurality of stages according to the cable net lifting design, and each stage is lifted by one height (namely the pituitary step). The size of the pituitary step is determined by the design requirements.
S6: and obliquely lifting the second tooling cable in each diagonal zone to enable the radial cables of the radial oblique lifting points in the diagonal zones to be tensioned.
Specifically, an oblique lifting force is applied to the second tooling cable in each diagonal zone. The oblique lifting force is obliquely upward and outward along the connecting line of the two end points corresponding to the second tooling cable, so that the radial cable 12 of the radial oblique lifting point B in the diagonal area is tensioned.
S7: and vertically lifting the first tooling cables 3 in the two second arc top areas to ensure that the vertical lifting points A in the second arc top areas are lifted by 1 vertical lifting step.
S8: and obliquely lifting the second tooling cables in the two second arc top areas to enable the radial cables 12 of the radial oblique lifting points B in the second arc top areas to be tensioned.
S9: and vertically lifting the first tooling cable 3 in each diagonal zone to enable the vertical lifting point A in each diagonal zone to lift 1 vertical lifting step.
S10: and obliquely lifting the second tooling cables in the two first arc top areas to enable the radial cables 12 of the radial oblique lifting points B of the first arc top areas I to be tensioned.
S11: and repeating the steps S5-S10 until the cable net is lifted to the designed elevation.
The area division of the cable net is mainly divided according to the deformation trend and the law of the cable net in the lifting process. The deformation tendency of the looped cables in each of the large-scale regions is similar. The deformation tendency of the looped cable in the first arc top area is contraction towards an inner field; the deformation trend of the annular cable of the second arc top area is expansion towards an external field; the deformation tendency of the circumferential cable in the diagonal region is mainly shrinkage towards the internal field.
In the installation of the steel roof structure of the cable bearing grid structure, the lower part of the steel roof structure is provided with an inner ring and an outer ring of supporting tire carriers, the tire carriers and the lower part of the concrete structure form obstacle collision to the lifting of the cable net, the lifting sequence of the steps S5-S10 is favorable for ensuring the safety of the cable net in the lifting process, so that in the design of the lifting step: the lifting of the ring cables in the diagonal zone is performed by firstly pulling the cable in a diagonal mode and then vertically pulling the cable, the ring cables in the first arc top zone and the second arc top zone are performed by firstly vertically pulling the cable in a diagonal mode and then pulling the cable in a diagonal mode, and the optimized lifting sequence avoids collision with a bed-jig and a concrete structure on one hand and improves the lifting safety of the cable net on the other hand.
S12: and after the cable net is lifted to the designed elevation, installing a cable clamp on the cable net.
Specifically, the method comprises the following steps:
s121, providing a plurality of first cable clamps, and sequentially installing the first cable clamps in a diagonal area, a first arc top area and a second arc top area of the circular cable 11.
And S122, providing a plurality of second cable clamps, and sequentially installing the second cable clamps on the radial cable from the first end of the radial cable close to the looped cable to the second end of the radial cable far from the looped cable.
According to the cable net partition circulating lifting installation method of the cable bearing grid structure, areas are divided according to the deformation trend and the rule of a cable net in the lifting process, each type of area is distributed and lifted, a combined lifting method of 'vertical lifting and inclined pulling' is adopted, the vertical lifting gradually improves the partition height of the cable net, the vertical lifting ensures the position and the shape of the cable net to be kept, the cyclic lifting of the vertical lifting and the inclined pulling is beneficial to reducing the cable net installation difficulty and improving the cable net installation efficiency and safety, the auxiliary tool usage amount in the installation process can be reduced, and the cable net partition circulating lifting installation method has good comprehensive benefits.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the invention is to be defined by the scope of the appended claims.
Claims (5)
1. A cable net partition circulating lifting installation method of a cable bearing grid structure is characterized in that a cable net comprises an oval ring cable and a plurality of radial cables connected to the ring cable at intervals, and the cable net partition circulating lifting installation method comprises the following steps:
s1, selecting the joint of the ring cable and each radial cable as a vertical lifting point or a radial inclined lifting point, wherein the vertical lifting points and the radial inclined lifting points are alternately arranged;
s2, providing a first tooling cable, and installing the first tooling cable at each vertical lifting point;
s3, providing a second tooling cable, and installing the second tooling cable on the radial cable of each radial inclined lifting point;
s4, dividing the cable net into two opposite first arc top areas, two opposite second arc top areas and opposite angle areas, wherein the opposite angle areas are located between the first arc top areas and the second arc top areas, the first arc top areas are located in areas where two ends of a short axis of the elliptic looped cable are located, and the second arc top areas are located in areas where two ends of a long axis of the elliptic looped cable are located;
s5, vertically lifting the first tooling cable in the second first arc top area, so that the vertical lifting point in the second first arc top area is lifted by 1 vertical lifting step;
s6, obliquely pulling the second tooling cable in each diagonal zone, so that the radial cables of the radial oblique lifting points in the diagonal zones are tensioned;
s7, vertically lifting the first tooling cable in the second arc top area, so that the vertical lifting point in the second arc top area is lifted by 1 vertical lifting step;
s8, obliquely lifting the second tooling cable in the second arc top area, so that the radial cable of the radial oblique lifting point in the second arc top area is tensioned;
s9, vertically lifting the first tooling cable in each diagonal zone to enable the vertical lifting point in each diagonal zone to be lifted by 1 vertical lifting step distance;
s10, obliquely lifting the second tooling cable in the second first arc top area, so that the radial cables of the radial oblique lifting points in the second first arc top area are tensioned;
and S11, repeating the steps S5-S10 until the cable net is lifted to the designed elevation.
2. The method for installing a cable-supported lattice structure in a cable-grid-partitioned circulating-hoisting manner according to claim 1, further comprising:
after the cable net is lifted to a designed elevation, providing a plurality of first cable clamps, and sequentially installing the first cable clamps on the diagonal area, the first arc top area and the second arc top area on the looped cable;
providing a plurality of second cable clamps, and sequentially installing the second cable clamps on the radial cable from the first end of the radial cable close to the annular cable to the second end of the radial cable far from the annular cable.
3. The method of claim 1, wherein the step of diagonally pulling the second tooling cables in each diagonal zone comprises applying a diagonal pulling force to the second tooling cables in each diagonal zone, the diagonal pulling force being directed obliquely upward and outward along a line connecting two ends of the corresponding second tooling cables.
4. A method of claim 1 wherein said step of vertically lifting said first tooling cables in said first dome section includes applying a vertical lifting force to said first tooling cables in said first dome section, said vertical lifting force being directed vertically upwardly.
5. A cable-mesh zoned cyclic lift installation method of a cable-supported grid structure as claimed in claim 1, wherein the first arc-crest region is located in a region where a large diameter of the elliptical loop cable is located, and the second arc-crest region is located in a region where a small diameter of the elliptical loop cable is located.
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| CN201811066513.7A CN109113182B (en) | 2018-09-13 | 2018-09-13 | Cable net partition circulating lifting installation method of cable bearing grid structure |
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| CN201811066513.7A CN109113182B (en) | 2018-09-13 | 2018-09-13 | Cable net partition circulating lifting installation method of cable bearing grid structure |
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| CN109750782A (en) * | 2019-01-24 | 2019-05-14 | 中建八局第三建设有限公司 | A kind of stadium vehicle width formula rope bearing structure construction method |
| CN113323406B (en) * | 2021-06-11 | 2022-04-26 | 上海宝冶集团有限公司 | Large-weight ship-shaped steel structure integral hoisting structure based on ANSYS and construction method thereof |
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