CN116163460B - Anti-overturning installation method and anti-overturning device for cable structure system - Google Patents
Anti-overturning installation method and anti-overturning device for cable structure systemInfo
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- CN116163460B CN116163460B CN202310282972.3A CN202310282972A CN116163460B CN 116163460 B CN116163460 B CN 116163460B CN 202310282972 A CN202310282972 A CN 202310282972A CN 116163460 B CN116163460 B CN 116163460B
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- secondary structure
- tilting device
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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
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/14—Suspended roofs
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- 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
- E04G21/14—Conveying or assembling building elements
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明属于建筑施工技术领域，公开一种索结构体系防倾覆安装方法及防倾装置，该安装方法包括以下步骤：S1、拼装索组；S2、对索组进行整体牵引、张拉、拍销，完成索组与端部结构之间的安装；S3、根据起重设备的排布和次结构进场情况确定次结构安装顺序，并按照安装顺序通过起重设备进行次结构的吊装；S4、在次结构安装到位后安装防倾装置，防倾装置连接于次结构和索夹，以使索组的偏载弯矩转由次结构予以抵抗消耗，限制索组的侧倾变形；S5、重复步骤S3和步骤S4，进行剩余次结构的安装。防倾装置能够有效控制索组扭转变形，并使次结构的安装趋于自由灵活，提高施工效率，且能避免配重块高空悬挂带来的施工风险，降低施工成本。
The present invention belongs to the field of building construction technology, and discloses a cable structure system anti-overturning installation method and anti-overturning device, the installation method comprising the following steps: S1, assembling cable groups; S2, pulling, tensioning, and pinning the cable groups as a whole to complete the installation between the cable groups and the end structures; S3, determining the installation sequence of the secondary structures according to the arrangement of the lifting equipment and the access conditions of the secondary structures, and hoisting the secondary structures by the lifting equipment according to the installation sequence; S4, installing the anti-overturning device after the secondary structures are installed in place, the anti-overturning device being connected to the secondary structures and the cable clamps so that the eccentric load bending moment of the cable groups is resisted and consumed by the secondary structures, thereby limiting the lateral deformation of the cable groups; S5, repeating steps S3 and S4 to install the remaining secondary structures. The anti-overturning device can effectively control the torsional deformation of the cable groups, and make the installation of the secondary structures free and flexible, thereby improving construction efficiency, avoiding the construction risks caused by the high-altitude hanging of the counterweight blocks, and reducing construction costs.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an anti-overturning installation method and an anti-overturning device for a cable structure system.
Background
The cable structure system is arranged between two end structures at intervals and comprises a cable connected between the two end structures and a secondary structure arranged between two adjacent cables, wherein the cable and the secondary structure form a cable net structure.
Due to the restrictions of tension requirements, rope manufacturing process, cost and the like, a plurality of rope arrangement schemes are often adopted for the rope with larger rope force requirements, namely, the plurality of ropes form an integrated rope group through rope clamps. The secondary structure and the decorative structure are arranged on the cable group in an orthogonal or oblique mode, and finally a complete cable net structure is formed. In the construction process, the cable group is subjected to torsion deflection due to asymmetric load in an asymmetric installation stage of a secondary structure on the cable group, and the cable group is overturned due to serious asymmetry, so that serious construction risks are brought.
Aiming at the technical problems, the prior art mainly adopts two control strategies, namely 1) strictly controlling the secondary structure installation flow, symmetrically hoisting to ensure that excessive asymmetric load is not generated in the whole construction process, preventing the structure from overturning, and 2) hanging a counterweight to balance the eccentric load caused by secondary structure installation.
In the first scheme, although the measure cost is not increased, the secondary structure is installed strictly symmetrically, so that excessive asymmetric load can be avoided, and further, high requirements are put on material supply, component stacking, lifting equipment arrangement, management control and the like, so that the construction process tends to be complex, the lifting equipment is required to be continuously changed in position, the efficiency is seriously reduced, and once a problem occurs in a material supply sequence, the problems of labor charge, waiting and the like can be caused, and the construction cost is increased due to phase change. In the second scheme, although the construction management requirement is reduced, the additional counterweight also brings about the increase of cost in the aspects of manufacturing, purchasing, installing the counterweight and the like, and when the counterweight required to be hung is heavier, the construction cost is greatly increased, and the greater potential safety hazard of high overhead suspended weight is brought.
Disclosure of Invention
The invention aims to provide an anti-overturning installation method and an anti-overturning device for a cable structure system, which can effectively control torsional deformation of a cable group, enable installation of a secondary structure to be free and flexible, improve construction efficiency, avoid construction risks caused by high-altitude suspension of a balancing weight and reduce construction cost.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, a method for anti-overturning installation of a cable structure system is provided, comprising the following steps:
S1, assembling a cable group, wherein the cable group comprises a plurality of inhaul cables, and the inhaul cables are connected into a whole through cable clamps;
s2, carrying out overall traction, tensioning and pin beating on the cable set to finish the installation between the cable set and the end structure;
s3, determining an installation sequence of the secondary structure according to arrangement of hoisting equipment and approach conditions of the secondary structure, hoisting the secondary structure through the hoisting equipment according to the installation sequence, and connecting two ends of the secondary structure with cable clamps on adjacent cable groups respectively;
S4, after the secondary structure is installed in place, installing an anti-tilting device, wherein the anti-tilting device is connected with the secondary structure and the cable clamp, so that the unbalanced load bending moment of the cable group is resisted and consumed by the secondary structure, and the rolling deformation of the cable group is further limited;
S5, repeating the step S3 and the step S4, and installing the residual secondary structure.
In the step S4, the secondary structure is hoisted by the lifting device through the lifting hook, and the anti-tilting device is arranged after the secondary structure is arranged in place and before the lifting hook of the lifting device is released;
After the anti-tilting device is installed, the lifting device drives the lifting hook to loose.
As the preferable scheme of the anti-overturning installation method of the cable structure system, the invention further comprises the following steps:
S6, after the symmetrical sub-structures on the same cable clamp are all installed in place, removing the anti-tilting device connected with the cable clamp on the sub-structure installed first, and installing the anti-tilting device between the sub-structure installed later and the cable clamp.
As the preferable scheme of the anti-overturning installation method of the cable structure system, after the step S6, the method further comprises the following steps:
s7, carrying out secondary structure or decoration part supplement on the position from which the anti-tilting device is removed;
And S8, after all the secondary structures are installed, removing all the rest anti-tilting devices, and completing the repair work of all the rest secondary structures or decorating parts, thereby completing the integral installation of the cable structure system.
As the preferable scheme of the anti-overturning installation method of the cable structure system, the invention further comprises the step of designing the anti-overturning device, and the method for designing the anti-overturning device comprises the following steps:
R1, carrying out modeling analysis according to the most unfavorable construction working condition of the secondary structure installed on the cable group, wherein the connection between the secondary structure and the cable group is respectively analyzed according to different connection rigidities, and the cable group deformation form and the mapping relation between the connection internal force and the connection rigidity under each connection rigidity are obtained;
R2, based on the mapping relation in the step R1, defining the minimum rigidity and the maximum internal force of the connection between the secondary structure of the cable group in the acceptable cable group deformation form and the cable group;
r3, carrying out structural design of the anti-tilting device according to the maximum internal force;
r4, carrying out detailed modeling analysis on the nodes between the cable sets and the secondary structure according to the anti-tilting device designed in the step R3, and clearly increasing the connection rigidity E between the secondary structure of the anti-tilting device and the cable sets;
r5, if the connection rigidity E analyzed in the step R4 is greater than or equal to the minimum rigidity requirement, the design is completed, and if the connection rigidity E is smaller than the minimum rigidity requirement, the anti-tilting device is reinforced, and the steps R4 and R5 are repeated for analysis and rechecking until the minimum rigidity requirement is met.
In a second aspect, an anti-tilting device of a cable structure system is provided, and the anti-tilting device is applied to the anti-tilting installation method of a cable structure system, and comprises a rigid rod, wherein the extending direction of the rigid rod is consistent with the extending direction of the secondary structure, one end of the rigid rod is connected with the secondary structure, and the other end of the rigid rod is connected with the cable clamp.
As the preferable scheme of the cable structure system anti-tilting device provided by the invention, the secondary structure is provided with the first connecting piece, the cable clamp is provided with the second connecting piece, one end of the rigid rod is detachably connected with the first connecting piece, and the other end of the rigid rod is detachably connected with the second connecting piece.
As the preferable scheme of the cable structure system anti-tilting device, the anti-tilting device further comprises a first bolt and a second bolt, wherein the rigid rod is connected with the first connecting piece through the first bolt, the rigid rod is connected with the second connecting piece through the second bolt, the axis of the first bolt is parallel to the secondary structure, the axis of the second bolt is vertical to the secondary structure, and the second bolt is a friction type high-strength bolt.
As the preferable scheme of the cable structure system anti-tilting device provided by the invention, the rigid rod is provided with the first strip-shaped hole along the length direction of the rigid rod, and the second bolt penetrates through the second connecting piece and the first strip-shaped hole.
As the preferable scheme of the cable structure system anti-tilting device provided by the invention, the second connecting piece is provided with the second strip-shaped hole, the extending direction of the second strip-shaped hole is perpendicular to the extending direction of the first strip-shaped hole, and the second bolt penetrates through the first strip-shaped hole and the second strip-shaped hole.
The invention has the beneficial effects that:
The invention provides an anti-overturning installation method of a cable structure system, which is characterized in that after an auxiliary structure is installed on a cable group, an anti-overturning device is installed at a corresponding position of the auxiliary structure, and the anti-overturning device is connected between the auxiliary structure and a cable clamp of the cable group, so that the unbalanced load bending moment of the cable group is resisted and consumed by the auxiliary structure, and the side-tipping deformation of the cable group is further limited. Namely, the arrangement of the anti-tilting device can balance eccentric bending moment generated on the cable group, and the serious deflection deformation of the cable group is avoided. After each secondary structure is installed, the inclination prevention device is installed at the corresponding position to avoid deflection of the cable group, so that the installation sequence of the secondary structure is not required to be strictly controlled, the requirements on material supply, component stacking, lifting equipment arrangement, management control and the like are reduced, torsional deformation of the cable group is effectively controlled, the installation of the secondary structure tends to be free and flexible, and the construction efficiency is improved. Compared with the balancing mode of hanging the balancing weight in the prior art, the anti-overturning installation method provided by the invention does not need to additionally hang the balancing weight, reduces the construction cost and can avoid the construction risk caused by high-altitude hanging of the balancing weight.
The invention also provides an anti-tilting device which is connected between the secondary structure and the cable clamp and can effectively balance deflection load generated by installing the secondary structure on the cable group. The anti-tilting device is small in size, convenient to install and detach and capable of being used in a turnover mode, and the construction cost is controllable.
Drawings
FIG. 1 is a flow chart of a method for anti-toppling installation of a cable structure system according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the connection to the cable assembly without the anti-roll device installed on the secondary structure;
FIG. 3 is a schematic representation of a variation of the cable set without the anti-roll device mounted to the secondary structure;
FIG. 4 is a force analysis diagram of a cable assembly without an anti-roll device mounted to the secondary structure;
FIG. 5 is a schematic illustration of the connection to the cable assembly after the secondary structure is provided with an anti-tilt device;
FIG. 6 is a schematic representation of a variation of the secondary structure with the anti-tilt device mounted thereto;
FIG. 7 is a force analysis diagram of a cable assembly after installation of an anti-roll device on a secondary structure;
FIG. 8 is a first work process diagram of a cable structure system provided in accordance with an embodiment of the present invention;
FIG. 9 is a second work process diagram of a cable structure system provided in accordance with an embodiment of the present invention;
FIG. 10 is a first (top view) of a third construction process of a cable construction system according to an embodiment of the present invention;
FIG. 11 is a second (isometric) view of a third work process of the cable construction system provided in accordance with an embodiment of the present invention;
FIG. 12 is an enlarged view of a portion of FIG. 11 at A;
FIG. 13 is a fourth work process diagram of a cable structure system provided in accordance with an embodiment of the present invention;
Fig. 14 is a partial enlarged view at B in fig. 13;
FIG. 15 is a fifth work process diagram of a cable structure system provided in accordance with an embodiment of the present invention;
FIG. 16 is a first (top view) of a sixth construction process of a cable construction system according to an embodiment of the present invention;
FIG. 17 is a second (axonometric) view of a sixth work process of the cable structure system provided in the embodiments of the present invention;
FIG. 18 is a seventh work process diagram of a cable structure system provided in accordance with embodiments of the present invention;
FIG. 19 is a schematic view of an anti-tilting device according to an embodiment of the present invention;
Fig. 20 is a partial enlarged view at C in fig. 19.
In the figure:
1. A cable set; 2, an end structure, 3, hoisting equipment, 4, a secondary structure, 5, an anti-tilting device, and 6, a side span structure;
11. The cable, 12, cable clamps, 121, a second connecting piece, 1211, a second bar-shaped hole;
31. A lifting hook;
41. a first connector;
51. rigid rod 52, first bolt 53, second bolt;
511. A first bar-shaped hole.
Detailed Description
The invention 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 thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus 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 invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1, the embodiment provides an anti-overturning installation method for a cable structure system, which includes the following steps:
S1, assembling a cable group 1, wherein the cable group 1 comprises a plurality of inhaul cables 11, and the inhaul cables 11 are connected into a whole through a cable clamp 12;
S2, carrying out overall traction, tensioning and pin beating on the cable set 1 to finish the installation between the cable set 1 and the end structure 2;
s3, determining the installation sequence of the secondary structure 4 according to the arrangement of the hoisting equipment 3 and the approach condition of the secondary structure 4, hoisting the secondary structure 4 through the hoisting equipment 3 according to the installation sequence, and connecting the two ends of the secondary structure 4 with cable clamps 12 on the adjacent cable groups 1 respectively;
S4, after the secondary structure 4 is installed in place, an anti-tilting device 5 is installed, and the anti-tilting device 5 is connected with the secondary structure 4 and the cable clamp 12, so that the unbalanced load bending moment of the cable set 1 is resisted and consumed by the secondary structure 4, and the side tilting deformation of the cable set 1 is further limited;
s5, repeating the step S3 and the step S4, and installing the residual secondary structure 4.
According to the anti-overturning installation method for the cable structure system, after the secondary structure 4 is installed on the cable group 1, the anti-overturning device 5 is installed at the corresponding position of the secondary structure 4, and the anti-overturning device 5 is connected between the secondary structure 4 and the cable clamp 12 of the cable group 1 so as to balance eccentric bending moment generated on the cable group 1 and avoid serious deflection deformation of the cable group 1. After each secondary structure 4 is installed, the inclination prevention device 5 can be installed at the corresponding position to avoid deflection of the cable group 1, so that the installation sequence of the secondary structure 4 is not required to be strictly controlled, the strict symmetrical hoisting is not required, the requirements on material supply, component stacking, arrangement and management control of the hoisting equipment 3 and the like are reduced, the torsional deformation of the cable group 1 is effectively controlled, the installation of the secondary structure 4 tends to be free and flexible, and the construction efficiency is improved. Compared with the balancing mode of hanging the balancing weight in the prior art, the anti-overturning installation method provided by the invention does not need to additionally hang the balancing weight, reduces the construction cost and can avoid the construction risk caused by high-altitude hanging of the balancing weight.
As shown in fig. 2, a schematic view of the substructure 4 is shown without the anti-roll device 5. The secondary structure 4 is hinged with the cable clamps 12 of the cable groups 1, and the cable 11 is of a flexible structure, so that the cable groups 1 can deflect and deform after the secondary structure 4 is installed between two adjacent cable groups 1. As shown in fig. 3, the deflection deformation of the cable assembly 1 is schematically illustrated when the anti-tilting device 5 is not mounted on the substructure 4. Referring to fig. 3 and 4, the gravity of the secondary structure 4 is G, which is distributed to two cable sets 1, the load on the cable clamps 12 at the connection position with the secondary structure 4 at the two sides is G/2, the load is an eccentric vertical load, when the cable sets 1 bear the eccentric vertical load, in order to balance the eccentric bending moment effect generated by the eccentric vertical load, the cable 11 far away from the eccentric vertical load bears a vertical upward acting force (the stress at the connection position of the cable clamps 12 and the cable 11 is R2), and the cable 11 near the eccentric vertical load bears a larger vertical downward acting force (the stress at the connection position of the cable clamps 12 and the cable 11 is r1=r2+g/2). The up-down acting force causes the two inhaul cables 11 in the cable group 1 to deform upwards and downwards respectively, so that the cable group 1 deflects and deforms, and the secondary structure 4 cannot apply force capable of overcoming deflection load to the cable group 1. If the secondary structure 4 is continuously installed on the two adjacent cable sets 1, deflection is increased, and further, the cable sets 1 are overturned due to the continuous accumulated development of deflection, so that serious construction accidents are caused.
As shown in fig. 5, the secondary structure 4 is schematically shown after the anti-tilting device 5 is mounted thereon. The anti-tilting device 5 is arranged and is connected with the secondary structure 4, so that the secondary structure 4 and the cable clamp 12 can generate a bearable property, and further, the unbalanced load moment born by the cable set 1 can be balanced. As shown in fig. 6, after the anti-tilting device 5 is installed, the adjacent two cable sets 1 do not generate obvious deflection deformation. As shown in fig. 7, the anti-tilting device 5 is added to bear the eccentric bending moment m0=g/4 (e1+e2) of the cable group 1 due to the installation of the secondary structure 4, so as to limit the deflection deformation of the cable group 1. That is, by adding the anti-tilting device 5, the original hinged connection between the sub-structure 4 and the cable clamp 12 is changed into a connection structure capable of bearing bending moment, so that the eccentric bending moment generated by eccentric load is borne by the anti-tilting device 5 together with the sub-structure 4, and each cable 11 of the cable group 1 can averagely share the vertical force transmitted by the sub-structure 4 (the stress at the connection position of the cable clamp 12 and the two cables 11 is G/4), and the deflection deformation of the cable group 1 is limited by the anti-tilting device 5.
Specifically, in step S1, the operator assembles the cable 1 on the ground, fixedly connects the plurality of cables 11 in the cable 1 into a whole by the cable clamp 12, and after the cable 1 is assembled, performs the next step S2.
In step S2, the cable set 1 is lifted to the high altitude by a special traction device and a tensioning device, and the tensioning operation of the cable set 1 is performed, after the cable set 1 is tensioned to the proper form and the cable force meets the requirements, the pin hole at the cable head of the inhaul cable 11 is connected with the pin hole on the lug plate of the end structure 2 by a pin shaft, and the installation of the cable set 1 can be completed. As shown in fig. 8, the two adjacent cable sets 1 are assembled in a top view and an isometric view.
Between the installation of the cable sets 1, the installation of the side span structures 6 can be performed first, as shown in fig. 8, and the side span structures 6 on both sides are installed.
As shown in fig. 9, is a process diagram of the installation of the first sub-structure 4. In step S3, the installation sequence of the secondary structure 4 is determined according to the arrangement of the hoisting device 3 and the approach condition of the secondary structure 4, and the hoisting of the secondary structure 4 is performed through the hoisting device 3 according to the installation sequence, the operator connects two ends of the secondary structure 4 with the cable clamps 12 on two adjacent cable sets 1 respectively, specifically, the secondary structure 4 is hinged with the cable clamps 12, and at this time, the cable sets 1 are deflected and deformed by eccentric vertical load.
As shown in fig. 10, the anti-roll device 5 is installed. In step S4, anti-tilting devices 5 are installed between both ends of the secondary structure 4 and the corresponding clips 12, and the anti-tilting devices 5 are connected with both the secondary structure 4 and the clips 12 to balance the eccentric loads applied to the two cable sets 1.
Further, referring to fig. 11 and 12, in step S4, the lifting device 3 lifts the secondary structure 4 by the hook 31, and after the secondary structure 4 is installed in place and before the hook 31 of the lifting device 3 is released, the anti-tilting device 5 is installed, so as to ensure the safety when the anti-tilting device 5 is installed. After the anti-tilting device 5 is installed, the lifting device 3 drives the lifting hook 31 of the anti-tilting device to be unhooked so as to carry out subsequent lifting of the next secondary structure 4. As shown in fig. 13 and 14, after the anti-tilting device 5 is mounted, the hook 31 is separated from the sub-structure 4, and the next process is performed. The lifting device 3 may be a crane.
As shown in fig. 15, after the installation of the plurality of sub-structures 4 between the pair of cable sets 1 (two adjacent cable sets 1) and the installation of the anti-tilting device 5 on each of the sub-structures 4, the installation of the sub-structures 4 between the adjacent pair of cable sets 1 is performed, the plurality of sub-structures 4 in the pair of cable sets 1 are aligned with the plurality of sub-structures 4 between the previous pair of cable sets 1 one by one, and the two aligned sub-structures 4 are hinged to the same cable clip 12, that is, the sub-structures 4 are symmetrically installed on both sides of the cable clip 12.
The anti-overturning installation method for the cable structure system provided by the embodiment further comprises the following steps:
s6, after the secondary structures 4 which are symmetrical on two sides of the same cable clamp 12 are all installed in place, removing the anti-tilting device 5 which is connected with the cable clamp 12 on the secondary structure 4 which is installed first, and installing the anti-tilting device 5 between the secondary structure 4 which is installed later and the cable clamp 12.
Referring to fig. 15, the sub-structure 4 at the lower left in the drawing is a newly installed sub-structure 4, and the anti-tilting device 5 is not required to be installed at one end of the sub-structure 4 adjacent to the sub-structure 4 corresponding to the newly installed sub-structure, because the eccentric loads generated by installing the sub-structure 4 at both sides of the cable clip 12 are balanced with each other. That is, after the two symmetrical sub-structures 4 on the same cable clamp 12 are installed, only one side far away from each other is provided with the anti-tilting device 5, and the anti-tilting devices 5 are not required to be installed at the two ends of each sub-structure 4, so that the construction efficiency is effectively improved.
As shown in fig. 16 and 17, the sub-structure 4 on the middle pair of cable groups 1 or the two pairs of cable groups 1 can be constructed first, and after the construction is completed, the sub-structure 4 can be constructed simultaneously from the middle to the side span structures 6 on both sides.
Further, referring to fig. 16 and 17, after the construction of the sub-structures 4 on the intermediate two pairs of cable sets 1 is completed, one side of the sub-structure 4 is constructed from left to right (the lowermost row of sub-structures 4 in fig. 16), and the other side of the sub-structure 4 is constructed from right to left in sequence (the uppermost row of sub-structures 4 in fig. 16).
As shown in fig. 16 and 17, in the sub-structures 4 installed in pairs, the inclination preventing devices 5 are not required to be installed at one ends close to each other.
Specifically, after step S6, further comprising:
s7, the part of the detached anti-tilting device 5 is subjected to the supplement of the substructure 4 or the decoration;
S8, after all the secondary structures 4 are installed, removing all the rest anti-tilting devices 5, and completing the repair work of all the rest secondary structures 4 or decorating parts, wherein the whole installation of the cable structure system is completed.
As shown in fig. 18, a top view and an isometric view of the cable construction system formed after the installation of all the sub-structures 4 is completed.
The anti-overturning installation method for the cable structure system provided by the embodiment further comprises the steps of designing the anti-overturning device 5, and the method for designing the anti-overturning device 5 comprises the following steps:
R1, carrying out modeling analysis according to the most unfavorable construction working condition of the sub-structure 4 installed on the cable group 1, wherein the connection between the sub-structure 4 and the cable group 1 is respectively analyzed according to different connection rigidities, and the deformation form of the cable group 1 and the mapping relation between the connection internal force and the connection rigidity under each connection rigidity are obtained.
The mapping relation in the step R1 is used for reflecting the relation between the deformation form of the cable group 1 and the connection rigidity, and the relation between the connection internal force between the secondary structure 4 and the cable group 1 and the connection rigidity.
R2, based on the mapping relation in the step R1, the minimum rigidity and the maximum internal force of the connection between the substructure 4 and the cable group 1 under the acceptable deformation form of the cable group 1 are definitely determined.
Acceptable cable set 1 deformation configurations are understood to be the amount of cable set 1 deformation that is allowed by the design.
R3, carrying out structural design of the anti-tilting device 5 according to the maximum internal force;
R4, carrying out detailed modeling analysis on the node between the cable set 1 and the secondary structure 4 according to the anti-tilting device 5 designed in the step R3, and clearly increasing the connection rigidity E between the secondary structure 4 and the cable set 1 after the anti-tilting device 5;
R5, if the connection rigidity E analyzed in the step R4 is greater than or equal to the minimum rigidity requirement, the design is completed, and if the connection rigidity E is smaller than the minimum rigidity requirement, the anti-tilting device 5 is reinforced, and the steps R4 and R5 are repeated for analysis and rechecking until the minimum rigidity requirement is met.
Through the steps, the design parameters of the anti-tilting device 5 meeting the requirements can be obtained, and the anti-tilting device 5 is subjected to construction drawing according to the design parameters, so that entities meeting the requirements are manufactured according to the drawing paper.
As shown in fig. 19, this embodiment also provides a cable structure system anti-tilting device, which is applied to the cable structure system anti-tilting installation method described above. The anti-roll device 5 includes a rigid rod 51, and the rigid rod 51 has bending resistance. The extending direction of the rigid rod 51 coincides with the extending direction of the sub-structure 4, one end of the rigid rod 51 is connected to the sub-structure 4, and the other end of the rigid rod 51 is connected to the cable clamp 12.
The anti-tilting device 5 provided in this embodiment is connected between the secondary structure 4 and the cable clamp 12, and can effectively balance the deflection load generated by installing the secondary structure 4 on the cable set 1. The anti-tilting device 5 is small in size, convenient to install and detach and capable of being used in a turnover mode, and the construction cost is controllable.
That is, by adding the anti-tilting device 5, the original hinged connection between the sub-structure 4 and the cable clamp 12 is changed into a connection structure capable of bearing bending moment, so that the eccentric bending moment generated by eccentric load is borne by the anti-tilting device 5 together with the sub-structure 4, and each cable 11 of the cable group 1 can averagely share the vertical force transmitted by the sub-structure 4, and deflection deformation of the cable group 1 is limited by the anti-tilting device 5.
Referring to fig. 19, the secondary structure 4 is provided with a first connector 41, the cable holder 12 is provided with a second connector 121, one end of the rigid rod 51 is detachably connected with the first connector 41, and the other end of the rigid rod 51 is detachably connected with the second connector 121. By means of the first connecting piece 41 on the secondary structure 4 and the second connecting piece 121 on the cable holder 12, the rigid rod 51 can be mounted more conveniently, and the rigid rod 51 can be detachably connected to the secondary structure 4 and the cable holder 12, so that the cable holder is convenient to reuse.
Further, the rigid rod 51 is connected to the first connecting member 41 by a first bolt 52, the rigid rod 51 is connected to the second connecting member 121 by a second bolt 53, the axis of the first bolt 52 is parallel to the sub-structure 4, and the axis of the second bolt 53 is perpendicular to the sub-structure 4. The first bolt 52 is less stressed and may be selected as a conventional bolt. The second bolt 53 is preferably a friction type high strength bolt because of receiving a shearing force.
Referring to fig. 19 and 20, in order to facilitate the removal of the rigid rod 51 in a stressed state, a first bar-shaped hole 511 is formed in the rigid rod 51 along the length direction thereof, and a second bolt 53 penetrates the second connection member 121 and the first bar-shaped hole 511. The rigid rod 51 is subjected to force flow conduction in a force-bearing stage through the friction type high-strength bolt, when the rigid rod 51 needs to be removed, the friction type high-strength bolt slides in the first strip-shaped hole 511 in a small amplitude manner along with the removal of the pretightening force of the friction type high-strength bolt so as to remove the internal force of the rigid rod 51, and therefore the removal operation is easy and lossless.
Further, referring to fig. 20, the second connecting member 121 is provided with a second bar hole 1211, an extending direction of the second bar hole 1211 is perpendicular to an extending direction of the first bar hole 511, and a second bolt 53 penetrates the first bar hole 511 and the second bar hole 1211 to connect the rigid rod 51 and the second connecting member 121. The arrangement of the second bar-shaped hole 1211 and the first bar-shaped hole 511 facilitates the threading of the second bolt 53, and avoids the situation that the two holes are not aligned and cannot be installed.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. The anti-overturning installation method of the cable structure system is characterized by comprising the following steps of:
s1, assembling a cable group (1), wherein the cable group (1) comprises a plurality of inhaul cables (11), and the inhaul cables (11) are connected into a whole through cable clamps (12);
S2, carrying out integral traction, tensioning and pin beating on the cable set (1) to finish the installation between the cable set (1) and the end structure (2);
S3, determining the installation sequence of the secondary structure (4) according to the arrangement of the hoisting equipment (3) and the approach condition of the secondary structure (4), hoisting the secondary structure (4) through the hoisting equipment (3) according to the installation sequence, and connecting two ends of the secondary structure (4) with cable clamps (12) on adjacent cable groups (1) respectively;
s4, after the secondary structure (4) is installed in place, an anti-tilting device (5) is installed, and the anti-tilting device (5) is connected with the secondary structure (4) and the cable clamp (12) so that the unbalanced load bending moment of the cable group (1) is resisted and consumed by the secondary structure (4), and the side tilting deformation of the cable group (1) is further limited;
S5, repeating the step S3 and the step S4, and installing the residual secondary structure (4);
the method further comprises the step of designing the anti-tilting device (5), wherein the method for designing the anti-tilting device (5) comprises the following steps:
R1, carrying out modeling analysis according to the most unfavorable construction working condition of installing a secondary structure (4) on the cable group (1), wherein the connection between the secondary structure (4) and the cable group (1) is respectively analyzed according to different connection rigidities, and the deformation form of the cable group (1) under each connection rigidity and the mapping relation between the connection internal force and the connection rigidity are obtained;
R2, based on the mapping relation in the step R1, defining the minimum rigidity and the maximum internal force of the connection between the secondary structure (4) of the deformation form of the cable group (1) and the cable group (1);
R3, carrying out structural design of the anti-tilting device (5) according to the maximum internal force;
R4, carrying out detailed modeling analysis on the node between the cable set (1) and the secondary structure (4) according to the anti-tilting device (5) designed in the step R3, and clearly increasing the connection rigidity E between the secondary structure (4) and the cable set (1) after the anti-tilting device (5);
r5, if the connection rigidity E analyzed in the step R4 is greater than or equal to the minimum rigidity requirement, the design is completed, and if the connection rigidity E is smaller than the minimum rigidity requirement, the anti-tilting device (5) is reinforced, and the steps R4 and R5 are repeated for analysis and rechecking until the minimum rigidity requirement is met.
2. The method for anti-toppling installation of a cable structure system according to claim 1, wherein,
In the step S4, the lifting equipment (3) lifts the secondary structure (4) through a lifting hook (31), and after the secondary structure (4) is installed in place and before the lifting hook (31) of the lifting equipment (3) is unhooked, the anti-tilting device (5) is installed;
After the anti-tilting device (5) is installed, the lifting equipment (3) drives the lifting hook (31) of the anti-tilting device to loosen.
3. The method of anti-toppling installation of a cable structure system according to claim 1, further comprising the steps of:
S6, after the secondary structures (4) which are symmetrical on two sides of the same cable clamp (12) are all installed in place, the anti-tilting device (5) connected with the cable clamp (12) on the secondary structure (4) which is installed first is removed, and the anti-tilting device (5) is not required to be installed between the secondary structure (4) which is installed later and the cable clamp (12).
4. A method of anti-toppling installation of a cable structure system according to claim 3, further comprising, after step S6:
S7, carrying out the supplement of the secondary structure (4) or the decoration on the position of the detached anti-tilting device (5);
S8, after all the secondary structures (4) are installed, removing all the rest anti-tilting devices (5), and completing the repair work of all the rest secondary structures (4) or decorating parts, wherein the whole installation of the cable structure system is completed.
5. The cable structure anti-tilting device is characterized by being applied to the cable structure anti-tilting installation method according to any one of claims 1-4, wherein the anti-tilting device (5) comprises a rigid rod (51), the extending direction of the rigid rod (51) is consistent with the extending direction of the secondary structure (4), one end of the rigid rod (51) is connected with the secondary structure (4), and the other end of the rigid rod (51) is connected with the cable clamp (12).
6. The cable structure system anti-tilting device according to claim 5, wherein a first connecting piece (41) is arranged on the secondary structure (4), a second connecting piece (121) is arranged on the cable clamp (12), one end of the rigid rod (51) is detachably connected with the first connecting piece (41), and the other end of the rigid rod (51) is detachably connected with the second connecting piece (121).
7. The cable construction system anti-tilting device according to claim 6, wherein the anti-tilting device (5) further comprises a first bolt (52) and a second bolt (53), wherein the rigid rod (51) is connected with the first connecting piece (41) through the first bolt (52), the rigid rod (51) is connected with the second connecting piece (121) through the second bolt (53), the axis of the first bolt (52) is parallel to the secondary structure (4), the axis of the second bolt (53) is perpendicular to the secondary structure (4), and the second bolt (53) is a friction type high-strength bolt.
8. The cable structure system anti-tilting device according to claim 7, wherein the rigid rod (51) is provided with a first bar-shaped hole (511) along the length direction thereof, and the second bolt (53) penetrates through the second connecting piece (121) and the first bar-shaped hole (511).
9. The cable structure system anti-tilting device according to claim 8, wherein a second bar-shaped hole (1211) is provided on the second connecting piece (121), the extending direction of the second bar-shaped hole (1211) is perpendicular to the extending direction of the first bar-shaped hole (511), and the second bolt (53) penetrates through the first bar-shaped hole (511) and the second bar-shaped hole (1211).
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