CN114197315B - Construction method of spiral hyperbolic structure with space cable surface combined system inclined pulling - Google Patents
Construction method of spiral hyperbolic structure with space cable surface combined system inclined pulling Download PDFInfo
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- CN114197315B CN114197315B CN202111610951.7A CN202111610951A CN114197315B CN 114197315 B CN114197315 B CN 114197315B CN 202111610951 A CN202111610951 A CN 202111610951A CN 114197315 B CN114197315 B CN 114197315B
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 238000013461 design Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 13
- 238000004088 simulation Methods 0.000 claims description 9
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 2
- 238000011982 device technology Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method of a spiral hyperbolic structure with a space cable surface combination system inclined pulling, which belongs to the technical field of building construction and comprises the following steps: at least two conversion joints are arranged on the spiral ramp segment; setting up a jig frame, wherein the jig frame comprises joists, the joists are arranged at specified positions, at least two vertical support sections are arranged on the upper surfaces of the joists, and when the joists are arranged at the specified positions, the conversion sections are correspondingly dropped on the vertical support sections one by one; adjusting the posture of the spiral ramp section to a design posture, and connecting the conversion sections with the vertical support sections in a one-to-one correspondence manner through connecting pieces; after the installation of all the spiral ramp sections is completed, forming spiral ramps, installing stay cables on each spiral ramp section, and pre-tightening the stay cables in a primary installation mode; disassembling the connecting piece; and finally stretching the stay cable in place. The invention can rapidly and high-quality finish the construction of the spiral hyperbolic structure which is inclined by the space cable surface combination system.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a spiral hyperbolic structure with a space cable surface combined system inclined pulling.
Background
In the field of cable-stayed bridge construction, the most commonly used construction method is cantilever construction. The method comprises the steps of symmetrically assembling beam body sections from two sides of a tower column sequentially by using hoisting equipment, and pulling a section of a cable after the section of the cable is assembled, wherein extra temporary support is not needed during construction, and bridge bodies at two sides of the bridge column symmetrically extend outwards in a self-balancing mode until the bridge bodies at two banks are folded.
However, in some nonlinear cable-stayed bridge construction, the construction cannot be performed in a self-balancing mode on site due to the asymmetry of the bridge body structure.
Disclosure of Invention
The invention aims to provide a construction method of a spiral hyperbolic structure with a space cable surface combined system in a diagonal manner, which can rapidly finish the construction of the spiral hyperbolic structure with high quality.
The technical scheme adopted by the invention is as follows:
a construction method of a spiral hyperbolic structure with a space cable-surface combined system in a diagonal manner comprises the following steps:
S1, installing at least two conversion sections on a spiral ramp section;
S2, erecting a jig frame, wherein the jig frame comprises joists, the joists are arranged at specified positions, at least two vertical support sections are arranged on the upper surfaces of the joists, and when the joists are arranged at the specified positions, the conversion sections are correspondingly arranged on the vertical support sections one by one;
S3, adjusting the posture of the spiral ramp section to a design posture, and connecting the conversion sections and the vertical support sections in a one-to-one correspondence manner through connecting pieces;
s4, forming spiral ramps after finishing the installation of all the spiral ramp sections, installing stay cables on each spiral ramp section, and pre-tightening the stay cables in a primary installation mode;
s5, disassembling the connecting piece;
s6, finally stretching the stay cable in place.
Optionally, a first flange is arranged at the lower end of the conversion joint, and extends along the horizontal direction; the upper end of the vertical support joint is provided with a second flange which extends along the horizontal direction;
in the step S3, the connecting piece connects the second flange and the first flange in a one-to-one correspondence.
Optionally, in the step S6, the first flange is gradually lifted upwards to be separated from the second flange during the final tensioning of the stay cable.
Optionally, a tetrafluoroethylene backing plate is attached to the upper surface of the second flange.
Optionally, the jig frame further comprises a lower supporting longitudinal beam, and a plurality of longitudinal beams are arranged on the lower surface of the joist at intervals;
in the step S2, the lower support stringers are buried to an embedded position so that the joists are located at the designated positions.
Optionally, before said step S1, the following steps are also required:
S0, carrying out whole-process construction simulation technical analysis.
Optionally, the step S0 includes:
s01, determining machining and mounting precision of the spiral hyperbolic structure according to the requirements of a design drawing;
S02, determining the number of the spiral ramp sections of the spiral hyperbolic structure and the construction sequence of each spiral ramp section;
S03, integrally modeling the spiral hyperbolic structure, and performing construction simulation analysis;
s04, determining and optimizing deformation preset integer values and stress monitoring values of each spiral ramp segment in the construction process.
Optionally, the stay cable includes:
the anchor cup connecting plate is fixedly arranged on the spiral ramp section;
The cable comprises a cable body, wherein one end of the cable body is provided with an anchor cup type cable head, the other end of the cable body is provided with a fork ear type cable head, and the fork ear type cable head is configured to be connected with an ear plate;
in the step S1, when the stay cable is installed, the anchor cup type cable head is installed on the anchor cup connecting plate.
Optionally, a sleeve is sleeved on the free end of the anchor cup type cable head;
in the step S1, when the stay cable is mounted, the axial posture of the sleeve is adjusted to a position where the lug-shaped cable head at the other end of the stay cable can be parallel and butt-jointed with the lug plate, and the sleeve is welded to the anchor cup connecting plate.
Optionally, in the step S3, the connecting piece is a bolt.
The construction method of the spiral hyperbolic structure with the space cable surface combined system inclined pulling, which is provided by the invention, adopts a temporary support setting mode to finish the construction of the spiral hyperbolic structure. When the support is needed, the conversion sections are connected with the vertical support sections in one-to-one correspondence through the connecting pieces, the connecting pieces are detached after the support is completed, the operation is simple, and the construction efficiency is high. And after the connecting piece is disassembled, the stay cable is finally tensioned, so that the upward and horizontal reaction force can be completely released in the tensioning process of the bridge body, the prestress value of the stay cable with the design requirement cannot be consumed in advance, and the stress requirement of the design on the structure is met.
Drawings
FIG. 1 is a schematic diagram of a helical hyperbolic structure with a space cable-plane combination system being stayed in a cable, which is provided by the embodiment of the invention;
FIG. 2 is a flow chart of a construction method of a spiral hyperbolic structure of a space cable-surface combined system in a diagonal manner, which is provided by the embodiment of the invention;
FIG. 3 is a schematic illustration of a tire frame in connection with a helical ramp segment according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a connection between a first flange and a second flange according to an embodiment of the present invention;
Fig. 5 is a schematic view of a stay cable according to an embodiment of the present invention mounted to a helical ramp segment.
In the figure:
1. A spiral ramp segment; 11. a conversion section; 111. a first flange;
2. a jig frame; 21. the lower part supports the longitudinal beam; 22. joist; 23. a vertical support section; 231. a second flange;
3. stay cables; 31. an anchor cup connecting plate; 32. a cable body; 321. an anchor cup type cable head; 322. fork ear type cable head; 323. a sleeve; 33. ear plates;
4. A connecting piece;
5. a tetrafluoroethylene backing plate.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings. 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 drawings related to the present invention are shown.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-5, the embodiment provides a construction method of a spiral hyperbolic structure with a space cable surface combined system in a diagonal manner, which comprises the following steps:
S1, at least two conversion sections 11 are arranged on a spiral ramp section 1;
S2, erecting a jig frame 2, wherein the jig frame 2 comprises joists 22, the joists 22 are arranged at specified positions, at least two vertical support sections 23 are arranged on the upper surface of the joists 22, and when the joists 22 are arranged at the specified positions, the conversion sections 11 are correspondingly dropped on the vertical support sections 23 one by one;
S3, adjusting the posture of the spiral ramp segment 1 to a design posture, and connecting the conversion sections 11 with the vertical support sections 23 in a one-to-one correspondence manner through the connecting pieces 4; specifically, the three-dimensional attitude of the spiral ramp segment 1 in the air is adjusted;
S4, forming spiral ramps after finishing the installation of all the spiral ramp sections 1, installing stay ropes 3 on each spiral ramp section 1, and pre-tightening the stay ropes 3 in a preliminary installation mode;
S5, disassembling the connecting piece 4;
s6, finally stretching the stay rope 3 in place.
Specifically, in step S3, the connecting member 4 is a bolt.
According to the construction method of the spiral hyperbolic structure with the oblique pulling of the space cable surface combined system, which is provided by the embodiment, the main structure construction of the spiral hyperbolic structure is completed in a temporary supporting mode. When the support is needed, the conversion sections 11 are connected with the vertical support sections 23 in one-to-one correspondence through the connecting pieces 4, the connecting pieces 4 are detached after the support is completed, the operation is simple, and the construction efficiency is high. After the connecting piece 4 is disassembled, the stay cable 3 is finally tensioned, so that the upward and horizontal reaction force can be completely released in the tensioning process of the bridge body, the prestress value of the stay cable 3 required by design cannot be consumed in advance, and the stress requirement of the design on the structure is met.
In this embodiment, the spiral ramp segment 1 is connected to the surrounding building by stay cables 3.
In this embodiment, the jig frame 2 is a temporary supporting device, and a plurality of vertical supporting joints 23 are provided to form a multi-point supporting type temporary supporting device. Specifically, during actual construction, the number and distribution of the vertical support sections 23 may be set as needed.
Further, in the construction scheme making stage, in order to ensure the safety of the installation and use states of the spiral ramp, the main body structure of the spiral ramp and the jig frame 2 are integrally modeled, and the deformation pre-adjustment value and the stress monitoring value in each construction stage are obtained by comprehensively considering the interaction among the hyperbolic bridge body structure, the flexible stay cable and the floor frame structure through the analysis of the whole-process construction simulation technology. Specifically, before step S1, the following steps are also required:
S0, carrying out whole-process construction simulation technical analysis.
Specifically, step S0 includes:
s01, determining machining and mounting precision of the spiral hyperbolic structure according to the requirements of a design drawing;
S02, determining the number of spiral ramp sections 1 of a spiral hyperbolic structure and the construction sequence of each spiral ramp section 1;
s03, integrally modeling the spiral hyperbolic structure, and performing construction simulation analysis;
S04, determining and optimizing deformation preset integer values and stress monitoring values of each spiral ramp segment 1 in the construction process.
Specifically, in the analysis of the whole-process construction simulation technology, the jig frame 2 and the conversion section 11 also adopt a digital modeling technology, so that the same batch of the spiral ramp section 1 is processed, assembled and pre-assembled in a factory. After the components are transported to the site, the components are only required to be assembled rapidly.
Specifically, in the present embodiment, the upper end of the conversion section 11 is previously lofted in a factory according to the bridge bottom profile shape and assembled on the spiral ramp segment 1.
Specifically, in this embodiment, the tire frame 2 further includes a lower support stringer 21, and a plurality of stringers 21 are provided on the lower surface of the joist 22 at intervals.
In step S2, the lower support stringers 21 are buried to the buried position so that the joists 22 are located at the designated positions.
Referring to fig. 5, in this embodiment, the stay cable 3 includes an anchor cup attachment plate 31 and a cable body 32.
The anchor cup connecting plate 31 is fixedly arranged on the spiral ramp section 1; one end of the cable body 32 is provided with an anchor cup type cable head 321, the other end of the cable body 32 is provided with a forked lug type cable head 322, and the forked lug type cable head 322 is configured to be connected with the lug plate 33. In step S1, when installing the stay cable 3, the anchor cup type cable head 321 is mounted to the anchor cup attachment plate 31.
Further, the free end of the anchor cup-shaped cable head 321 is sleeved with a sleeve 323. In step S1, when the stay cable 3 is mounted, the axial posture of the sleeve 323 is adjusted to a position where the lug heads 322 at the other end of the stay cable 3 can be secured to the upper lug plate 33 in parallel, and the sleeve 323 is welded to the anchor cup connecting plate 31. When the tool stretches the stay cable 3, the anchor cup type cable head 321 also plays a role of a fulcrum of stretching counter force.
Further, an ear plate 33 is attached to the lug-shaped cable head 322.
When the stay cable 3 is tensioned, the active tensioning end is arranged at the bottom of the anchor cup connecting plate 31, and the tooling support can obtain a stable reaction force point by clamping the anchor cup connecting plate 31, so that the conventional fork lug type cable head is avoided from being used as a temporary reaction force frame by additionally welding lug plates around the conventional fork lug type cable head. The conventional fork lug type cable head also needs to cut off, polish and repair the temporary reaction frame after tensioning is finished, and is complex in operation.
As shown in fig. 1, the hyperbolic spiral structure is a spiral rising structure, namely a spiral ramp. The plurality of stay cables 3 form a stay cable group. In fig. 1,4 stay cable sets are included. The stay cables 3 in each stay cable group are arranged in a sector shape centering on the lug plate 33, and the space angles of the cable body 32 connected to the spiral ramp are different. The accuracy of the interface of the lug-shaped cable head 322 and the lug plate 33 is very high.
In the prior art, the two ends of the stay cable body are fork lug type cable heads. When the stay cable in the prior art is applied to the embodiment, the cable head bending phenomenon is difficult to avoid.
In order to avoid the cable head bending phenomenon, the embodiment provides the stay cable 3, one end of the cable body 32 is provided with an anchor cup type cable head 321, and the other end of the cable body 32 is provided with a fork ear type cable head 322. The anchor cup type cable head 321 is connected with the spiral ramp, the anchor cup connecting plate 31 and the sub-bin plate on the spiral ramp form a whole plate, multiple collisions with other partition plates are avoided, and the processing efficiency is improved.
Further, in the present embodiment, the lower end of the conversion section 11 is provided with a first flange 111, and the first flange 111 extends in the horizontal direction; the upper end of the vertical support section 23 is provided with a second flange 231, and the second flange 231 extends in the horizontal direction.
In step S3, the connection member 4 connects the second flange 231 and the first flange 111 in one-to-one correspondence.
Further, in step S6, the first flange 111 is gradually lifted upward to be separated from the second flange 231 during the final tensioning of the stay cable 3.
Preferably, the upper surface of the second flange 231 is attached with a tetrafluoroethylene backing plate 5. In this embodiment, the tetrafluoroethylene backing plate 5 is attached to the upper surface of the second flange 231, so that the frictional resistance of the first flange 111 during horizontal sliding relative to the second flange 231 can be reduced.
In this embodiment, the spiral ramp segment 1 is connected to the surrounding building by stay cables 3. When the connection is initially carried out, the cable body 32 of the stay cable 3 is not stretched finally temporarily, after all the connecting pieces 4 are disassembled, the clamping fixture 2 and the spiral ramp section 1 are in a disconnecting state, the support counter force of the clamping fixture 2 to the upward and horizontal directions of the spiral ramp is released, the downward support counter force is reserved, and the stay cable 3 is stretched finally at the moment.
Specifically, in the tensioning stage of the cable body 32, the tetrafluoroethylene backing plate 5 with low friction resistance is adhered to the lower surface of the first flange 111, and the conversion section 11 is connected with the spiral ramp section 1 into a whole, so that the conversion section 11 can move smoothly along the stress direction on the upper surface of the second flange 231 until the conversion section 11 lifts upwards to be separated from the jig frame 2, and temporary support unloading is completed.
The construction method of the spiral hyperbolic structure with the space cable surface combination system inclined pulling provided by the embodiment comprises three technologies, namely a construction pre-deformation analysis technology, a temporary supporting device technology and an inclined cable tensioning technology.
The construction pre-deformation analysis technology is the step S0, mainly solves the problem of deformation control of the spiral ramp, and provides a theoretical pre-deformation value quantized on site as an auxiliary reference basis. The temporary supporting device technology comprises a step S1, a step S2 and a step S3, and mainly solves the problems of structure stress conversion and structure unloading during construction. The stay cable tensioning technology comprises a step S4 and a step S6, and mainly solves the problem of linkage control of flexible cable tensioning stage and spiral ramp structure deformation.
In the stay cable tensioning technology, stay cable tensioning control adopts a principle of mainly controlling force and secondarily controlling shape, vertical deformation of a box girder is controlled on the basis of reaching prestress, and tension force of a stay cable is controlled by adjusting the length of a screw rod through the stay cable and assisting oil pressure gauge data. According to the simulation result, the stay cable 3 adopts a batch-wise and staged tensioning method. The stay cable 3 adopts a single-end tensioning mode, and the anchor cup type cable head 321 is an active tensioning end.
When the spiral ramp is constructed in the field, a plurality of spiral ramp sections 1 are spliced from bottom to top section by section, so that the spiral ramp is formed. After the spiral ramp is integrally formed, 32 stay cables 3 are arranged in place in 4 batches, and the stay cables 3 are pre-assembled and pre-tightened, namely, the stay cables 3 are pre-screwed, a single-end tensioning mode is adopted when the stay cables 3 are pre-assembled and pre-tightened, and an active tensioning end is arranged at the position of a lower lifting point of the stay cables 3. The connection of the clamping fixture 2 to the spiral ramp segment 1 is then released, i.e. the upward restraint of the spiral ramp is released. Finally tensioning the stay cables 3 in place in batches, and controlling the tensioning force of the stay cables 3 by adjusting the screw length of the stay cables 3 and assisting oil pressure gauge data when the stay cables 3 are finally tensioned in place until the cable force value reaches the design initial state requirement, and ending final twisting; during the final tensioning of the stay cable 3 in place, the helical ramp is gradually lifted upwards, forming a disengaged condition with the bed-jig 2. Finally, removing all the tire frames 2 on site after retesting and adjustment are finished.
The above embodiments merely illustrate the basic principle and features of the present invention, and the present invention is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The construction method of the spiral hyperbolic structure with the oblique pulling of the space cable surface combined system is characterized by comprising the following steps:
S1, at least two conversion joints (11) are arranged on a spiral ramp section (1);
S2, erecting a jig frame (2), wherein the jig frame (2) comprises joists (22), the joists (22) are arranged at specified positions, at least two vertical support sections (23) are arranged on the upper surface of each joist (22), and when the joists (22) are arranged at the specified positions, the conversion sections (11) are correspondingly dropped on the vertical support sections (23) one by one; the jig frame (2) is a temporary supporting device, and a plurality of vertical supporting joints (23) are arranged to form a multi-point supporting type temporary supporting device;
s3, adjusting the posture of the spiral ramp segment (1) to a design posture, and connecting the conversion joint (11) and the vertical support joint (23) in one-to-one correspondence through a connecting piece (4);
s4, forming spiral ramps after the installation of all the spiral ramp sections (1) is completed, installing stay cables (3) on each spiral ramp section (1), and pre-installing and pre-tightening the stay cables (3);
s5, disassembling the connecting piece (4);
S6, finally stretching the stay cable (3) in place.
2. The construction method of the spiral hyperbolic structure stayed by the space cable-plane combination system according to claim 1, wherein a first flange (111) is arranged at the lower end of the conversion joint (11), and the first flange (111) extends along the horizontal direction; the upper end of the vertical support joint (23) is provided with a second flange (231), and the second flange (231) extends along the horizontal direction;
In the step S3, the connecting piece (4) connects the second flange (231) and the first flange (111) in a one-to-one correspondence.
3. The construction method of the helical doubly curved structure according to claim 2, characterized in that in said step S6, said first flange (111) is gradually lifted upwards and separated from said second flange (231) during the final tensioning of said stay cable (3).
4. The construction method of the spiral hyperbolic structure with the cable-stayed by the space cable-plane combination system according to claim 2, wherein the upper surface of the second flange (231) is stuck with a tetrafluoroethylene backing plate (5).
5. The construction method of the spiral hyperbolic structure stayed by the space cable surface combination system according to claim 1, wherein the jig frame (2) further comprises a lower supporting longitudinal beam (21), and a plurality of longitudinal beams (21) are arranged on the lower surface of the joist (22) at intervals;
In the step S2, the lower support longitudinal beam (21) is buried to an embedded position, so that the joist (22) is positioned at the designated position.
6. The construction method of a helical hyperbolic structure with a cable-stayed by a space cable-plane combination system according to claim 1, wherein the following steps are further needed before the step S1:
S0, carrying out whole-process construction simulation technical analysis.
7. The method for constructing a spiral hyperbolic structure with a cable-stayed space cable-plane combination system according to claim 6, wherein the step S0 includes:
s01, determining machining and mounting precision of the spiral hyperbolic structure according to the requirements of a design drawing;
S02, determining the number of the spiral ramp sections (1) of the spiral hyperbolic structure and the construction sequence of each spiral ramp section (1);
S03, integrally modeling the spiral hyperbolic structure, and performing construction simulation analysis;
S04, determining and optimizing deformation preset integer values and stress monitoring values of each spiral ramp segment (1) in the construction process.
8. The construction method of a helical hyperbolic structure stayed by a space cable-surface combination system according to claim 1, characterized in that the stayed cable (3) comprises:
The anchor cup connecting plate (31) is fixedly arranged on the spiral ramp section (1);
The cable comprises a cable body (32), wherein one end of the cable body (32) is provided with an anchor cup type cable head (321), the other end of the cable body (32) is provided with a fork ear type cable head (322), and the fork ear type cable head (322) is configured to be connected with an ear plate (33);
In the step S4, the anchor cup type cable head (321) is mounted on the anchor cup connecting plate (31) when the stay cable (3) is mounted.
9. The construction method of the spiral hyperbolic structure with the inclined pull by the space cable surface combination system according to claim 8, wherein the free end of the anchor cup type cable head (321) is sleeved with a sleeve (323);
In the step S4, when the stay cable (3) is installed, the axial posture of the sleeve (323) is adjusted to ensure that the lug-shaped cable head (322) at the other end of the stay cable (3) can be in parallel butt joint with the lug plate (33), and the sleeve (323) is welded to the anchor cup connecting plate (31).
10. The construction method of a helical doubly curved structure according to any one of claims 1-9, wherein in step S3, said connecting member (4) is a bolt.
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