CN116516810A - Steel shell mechanism of transition section of reinforced concrete combined tower and manufacturing method thereof - Google Patents

Abstract

Embodiments of the present disclosure relate to a steel shell mechanism for a transition section of a reinforced concrete composite tower and a method of manufacturing the same. Comprising the following steps: the inner wall plate units are arranged at the bottom of the bearing plate units in a columnar mode, and an inner bin formed by the inner wall plate units is communicated with the bearing plate units to form an inner bin hole; the wall plates of the inner wall plate units are also provided with first vertical stiffening and first horizontal circumferential stiffening; the top of the outer wall plate unit is arranged on the outer wall of the bearing plate unit in a surrounding manner; the wall plates of the outer wall plate units are also provided with a plurality of second vertical stiffening and a plurality of second horizontal circumferential stiffening; the longitudinal partition plate is arranged between the outer wall plate unit and the inner wall plate unit; the horizontal reinforcing steel bar penetrates through the longitudinal partition plate and the first vertical stiffening plate along the horizontal direction; the outer wall plate annular reinforcing steel bars are arranged in the longitudinal partition plate and the second vertical stiffening plate in a penetrating manner along the horizontal direction. According to the embodiment of the disclosure, the steel shell mechanism can be connected with the accurate transition of the bolting tower segment. In the manufacturing process, the assembly progress control can be controlled, and the manufacturing technical level of the reinforced concrete combined tower is improved.

Description

Steel shell mechanism of transition section of reinforced concrete combined tower and manufacturing method thereof

Technical Field

The embodiment of the disclosure relates to the technical field of steel-concrete bridge manufacturing, in particular to a steel shell mechanism of a transition section of a steel-concrete combined tower and a manufacturing method thereof.

Background

In the related art, the bridge steel tower type mainly comprises a steel-concrete combined structure steel tower with a steel-concrete combined structure, a pure steel structure bolting steel tower with a metal contact force transmission, and a pure steel structure welding steel tower. The steel-concrete combined structure steel shell tower and the metal contact force transmission bolting steel tower are integrated into a mixed structure steel tower, and the mixed structure steel tower is applied to the forward bridge steel tower for the first time. The steel shell tower with the bottom steel-concrete combined structure is a novel steel tower structure in recent years, and the sections are welded; the bolting machine for the four-corner arc section of the super-thick plate is also adopted for the first time, the bolting machine is used for transferring force by metal contact, the machining precision of the section machine requires the flatness of the full section to be within 0.25mm, the perpendicularity of the axis to be within 1/10000, and the precision requirement is extremely high. The steel-concrete combined transition section is positioned between the bottom steel-concrete combined section and the bolting steel tower section, plays a role in transitional connection between the top and the bottom, ensures that the steel-concrete section is transited to the bolting tower section except that the structure of the steel-concrete combined section is complex to manufacture, and ensures that the connection precision of the upper bolting tower section is a difficulty in construction control.

Accordingly, there is a need to improve one or more problems in the related art as described above.

It is noted that this section is intended to provide a background or context for the technical solutions of the present disclosure as set forth in the claims. The description herein is not admitted to be prior art by inclusion in this section.

Disclosure of Invention

It is an object of embodiments of the present disclosure to provide a steel shell mechanism of a transition section of a reinforced concrete composite tower and a method of manufacturing the same, which overcome, at least in part, one or more of the problems due to the limitations and disadvantages of the related art.

According to a first aspect of embodiments of the present disclosure, there is provided a steel shell mechanism of a transition section of a reinforced concrete composite tower, the steel shell mechanism comprising:

the device comprises a bearing plate unit, an outer wall plate unit, an inner wall plate unit, a plurality of longitudinal partition plates, a plurality of horizontal steel bars and a plurality of outer wall plate circumferential steel bars;

the inner wall plate units are arranged at the bottom of the bearing plate units in a columnar mode, and an inner bin formed by the inner wall plate units is communicated with the bearing plate units to form an inner bin hole; the inner wall plate unit is provided with a plurality of first vertical stiffening ribs and a plurality of first horizontal circumferential stiffening ribs;

the top of the outer wall plate unit is arranged on the outer wall of the bearing plate unit in a surrounding mode; the wall plates of the outer wall plate units are also provided with a plurality of second vertical stiffening and a plurality of second horizontal circumferential stiffening;

the longitudinal partition plate is arranged between the outer wall plate unit and the inner wall plate unit so as to fixedly connect the outer wall plate and the inner wall plate;

the horizontal reinforcing steel bars penetrate through the longitudinal partition plates and the first vertical stiffening plates along the horizontal direction, and the horizontal reinforcing steel bars on the adjacent wall plates of the inner wall plate units are mutually intersected;

the outer wallboard circumferential reinforcement is penetrated in the longitudinal partition plate and the second vertical stiffening inwards along the horizontal direction, and the outer wallboard circumferential reinforcement is circumferentially arranged along the outer wallboard unit.

In an embodiment of the disclosure, the inner wall plate unit has a variable cross-section structure, and a size of a cross section of a top end of the inner wall plate unit is smaller than a size of a cross section of a bottom end of the inner wall plate unit.

In an embodiment of the disclosure, the outer wall plate unit includes four straight outer wall plate units and four circular arc outer wall plate units, the straight outer wall plate units and the circular arc outer wall plate units are sequentially connected at intervals so as to encircle on the outer wall of the bearing plate unit.

In an embodiment of the present disclosure, the first vertical stiffener and the first horizontal circumferential stiffener are disposed perpendicular to each other, and the second vertical stiffener and the second horizontal circumferential stiffener are disposed perpendicular to each other.

In an embodiment of the disclosure, the bearing plate unit is further provided with a pair of parallel webs and a plurality of stiffening plates, the webs are arranged on the bearing plate unit along the side edges of the inner wall plate mounting holes, and the stiffening plates are arranged between the webs and the outer wall plate unit.

According to a second aspect of embodiments of the present disclosure, there is provided a method of manufacturing a steel shell mechanism of a transition section of a reinforced concrete composite tower, the method comprising:

inverting the bearing plate unit for positioning;

assembling an inner wall plate unit on the bearing plate unit, and assembling a longitudinal partition plate on a wall plate of the inner wall plate unit;

the horizontal steel bars sequentially penetrate through the longitudinal partition plates and the first vertical stiffening on the inner wall plate units so that the horizontal steel bars on the adjacent wall plates of the inner wall plate units are mutually crossed;

assembling a straight outer wall plate unit according to the bearing plate unit and the inner wall plate unit;

the outer wall plate circumferential reinforcing steel bars sequentially penetrate through the longitudinal partition plates and the second vertical stiffening ribs on the straight outer wall plate units, so that the outer wall plate circumferential reinforcing steel bars are circumferentially arranged along the outer wall plate units;

and installing arc outer wall plate units between each two adjacent straight outer wall plate units.

In an embodiment of the disclosure, the method further comprises:

and pre-splicing the steel shell mechanism and the steel tower section at the upper part of the steel shell mechanism so as to control the matching precision of the interface of the upper end of the steel shell mechanism and the steel tower section at the upper part, and control the dislocation between the steel shell mechanism and the integral linear and interface butt joint plate of the steel tower section at the upper part. In an embodiment of the disclosure, the method further comprises:

and (3) integrally machining the top section of the steel shell mechanism to ensure the accuracy of the overall flatness of the top section of the steel shell mechanism.

In an embodiment of the disclosure, the method further comprises:

and carrying out secondary vertical pre-splicing on the steel shell mechanism and the steel tower section at the upper part of the steel shell mechanism, accurately adjusting the integral line shape between the steel shell mechanism and the upper steel tower section, ensuring the uniformity of welding seams between the integral machining edge at the top of the steel shell mechanism and the upper steel tower section plate, further ensuring the uniform shrinkage after site girth welding, reducing the line shape influence between the integral tower section after welding, and enabling the integral tower section to be transited to the upper metal contact bolting the steel tower section mounting connection precision requirement.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

in the embodiment of the disclosure, through the steel shell mechanism of the transition section of the reinforced concrete combined tower and the manufacturing method thereof, on one hand, the steel shell mechanism can be connected with the accurate transition of the bolting tower section. On the other hand, in the manufacturing process, the assembly progress control can be controlled, and the processing and manufacturing technical level of the steel-concrete combined tower is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

FIG. 1 illustrates a schematic structural view of a steel shell mechanism of a transition section of a reinforced concrete composite tower in an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a profile view of a steel shell mechanism in an exemplary embodiment of the present disclosure;

FIG. 3 illustrates a front view of a steel shell mechanism in an exemplary embodiment of the present disclosure;

FIG. 4 shows a side view of FIG. 3;

FIG. 5 shows a top cross-sectional view at A-A of FIG. 3;

FIG. 6 shows a top cross-sectional view at B-B in FIG. 3;

FIG. 7 shows a top cross-sectional view at C-C of FIG. 3;

FIG. 8 shows a top cross-sectional view at D-D in FIG. 3;

FIG. 9 illustrates a step diagram of a method of manufacturing a steel shell mechanism of a transition section of a reinforced concrete composite tower in an exemplary embodiment of the present disclosure;

fig. 10 shows a schematic view of a structure in which the pressure-bearing plate unit is placed upside down;

FIG. 11 is a schematic view showing the structure of the assembled inner wall panel unit;

FIG. 12 illustrates a schematic view of a structure using horizontal rebar across a first vertical stiffener and a longitudinal bulkhead;

FIG. 13 shows a schematic structural view of an assembled straight outer wall panel unit;

FIG. 14 illustrates a schematic view of a structure using outer panel hoop reinforcement through a longitudinal bulkhead and a second vertical stiffener;

fig. 15 is a schematic view showing the structure after the circular arc outer wall plate unit is assembled;

FIG. 16 illustrates a schematic diagram of matching pre-spellings of T1 and T2 in an exemplary embodiment of the present disclosure;

FIG. 17 illustrates a schematic view of a steel shell mechanism after an integral machining of a top section of the steel shell mechanism in an exemplary embodiment of the present disclosure;

fig. 18 shows a schematic view of a transition section T1 of the reinforced concrete composite tower in use with an upper steel tower section T2, a bottom tower T3 thereof in an exemplary embodiment of the present disclosure.

In the figure: 100. a pressure bearing plate unit; 110. a web; 200. an outer wall plate unit; 210. a second vertical stiffener; 220. second horizontal hoop stiffening; 230. circumferential reinforcing steel bars of the outer wall plate; 300. an inner wall panel unit; 310. a first vertical stiffener; 320. a first horizontal hoop stiffener; 330. horizontal steel bars; 400. longitudinal partition plates.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

In this example embodiment, a steel shell mechanism for a transition section of a steel-concrete composite tower is first provided. Referring to the illustration in fig. 1, the steel shell mechanism of the transition section of the steel-concrete composite tower may comprise:

bearing plate unit 100, outer wall plate unit 200, inner wall plate unit 300, longitudinal spacers 400, horizontal rebars 330 and outer wall plate circumferential rebars 230; the inner wall plate units 300 are arranged at the bottom of the bearing plate unit 100 in a columnar shape, and an inner bin formed by the inner wall plate units 300 is communicated with the bearing plate unit 100 to form an inner bin hole; wherein, the inner wall plate unit 300 is further provided with a plurality of first vertical stiffeners 310 and a plurality of first horizontal circumferential stiffeners 320; the top of the outer wall plate unit 200 is circumferentially disposed on the outer wall of the pressure bearing plate unit 100; wherein, the wall plate of the outer wall plate unit 200 is further provided with a plurality of second vertical stiffening ribs 210 and a plurality of second horizontal circumferential stiffening ribs 220; the vertical partition 400 is disposed between the outer wall plate unit 200 and the inner wall plate unit 300 to fixedly connect the outer wall plate and the inner wall plate; the horizontal steel bars 330 are penetrated in the longitudinal partition 400 and the first vertical stiffener 310 along the horizontal direction, and the horizontal steel bars 330 on the adjacent wall plates of the inner wall plate unit 300 are intersected with each other; the outer wall plate circumferential reinforcement 230 is penetrated in the longitudinal partition 400 and the second vertical stiffener along the horizontal direction, and the outer wall plate circumferential reinforcement 230 is circumferentially arranged along the outer wall plate unit 200. Fig. 2 is a schematic diagram of fig. 1.

According to the steel shell mechanism of the transition section of the reinforced concrete combined tower and the manufacturing method thereof, on one hand, the steel shell mechanism can be connected with the accurate transition of the bolting tower section. On the other hand, in the manufacturing process, the assembly progress control can be controlled, and the processing and manufacturing technical level of the steel-concrete combined tower is improved.

Next, each part of the method of manufacturing the steel shell mechanism of the transition section of the above-described steel-concrete composite tower in the present exemplary embodiment will be described in more detail with reference to fig. 1 to 9.

In one embodiment, as shown in fig. 3, a front view of the steel shell mechanism is provided. The inner wall plate unit 300 has a variable cross-section structure, and the size of the cross-section of the top end of the inner wall plate unit 300 is smaller than that of the cross-section of the bottom end of the inner wall plate unit 300.

Specifically, the steel shell mechanism adopts an inner wall and outer wall double-wall structure, the outer wall plate unit 200 is of a constant cross section, the inner wall plate unit 300 is of a variable cross section structure, and the inner wall plate and the outer wall plate are connected through a longitudinal partition 400 with a variable cross section.

Wherein fig. 4 is a side view of fig. 3; FIG. 5 is a top cross-sectional view at A-A of FIG. 3; FIG. 6 is a top cross-sectional view at B-B of FIG. 3; FIG. 7 is a top cross-sectional view taken at C-C of FIG. 3; fig. 8 is a top cross-sectional view at D-D of fig. 3.

The bottom opening box opening structure of the steel-concrete combined transition section manufactured by the steel shell mechanism is consistent with the section of the steel shell tower with the bottom steel-concrete combined structure, and gradually transits to the section structure of the upper bolting steel tower section through the bearing plate unit 100. In another embodiment, the steel-concrete joint transition section made of the steel shell mechanism has a maximum cross section size of 7.0m long, 6m wide and 6.6m high, the thickness of the outer wall plate is 78mm at maximum, the four corner outer wall plates are arc wall plates with a radius of 1m, and the section weight is about 200 tons.

In one embodiment, the exterior wall plate unit 200 includes four straight exterior wall plate units and four circular arc exterior wall plate units, which are sequentially connected at intervals so as to surround the exterior wall of the bearing plate unit 100. Specifically, the outer wall board unit 200 is formed by sequentially connecting a straight outer wall board unit and an arc outer wall board unit at intervals.

In one embodiment, the bearing plate unit 100 is further provided with a pair of parallel webs 110 and a plurality of stiffening plates, wherein the webs 110 are disposed on the bearing plate unit 100 along the sides of the inner wall plate mounting holes, and the stiffening plates are disposed between the webs 110 and the outer wall plate unit 200. Specifically, the bearing plate unit 100 is further provided with a web 110 and a plurality of stiffening plates, and the bearing plate unit 100 is used for transitional connection with the upper bolting tower segment.

In one embodiment, the first vertical stiffener 310 and the first horizontal circumferential stiffener 320 are disposed perpendicular to each other, and the second vertical stiffener and the second horizontal circumferential stiffener are disposed perpendicular to each other.

Specifically, the second vertical stiffener 210 and the second horizontal circumferential stiffener 220 are disposed perpendicular to each other and welded on the outer wall plate, so that they can mutually support to increase the overall rigidity and bearing capacity of the outer wall plate unit 200, the two sides of the longitudinal partition 400 are respectively welded on the outer wall plate unit 200 and the inner wall plate unit 300, the circumferential reinforcing steel bars 230 of the outer wall plate sequentially pass through the reinforcing steel bar holes on the longitudinal partition 400 and the second vertical stiffener 210, and are fixedly connected together with the welding nails on the welded outer wall plate unit 200 to form an integral stress structure. The first vertical stiffener 310 and the first horizontal circumferential stiffener 320 are disposed perpendicular to each other and welded on the inner wall plate, and can mutually support to increase the overall rigidity and bearing capacity of the inner wall plate unit 300, and the inner wall plate horizontal steel bars 330 sequentially pass through the steel bar holes on the longitudinal partition 400 and the first vertical stiffener 310 and are fixedly connected together with the welding nails on the welded inner wall plate unit 300 to form an integral stress structure.

The invention also provides a manufacturing method of the steel shell mechanism of the transition section of the steel-concrete combined tower. The method is applied to the manufacture of a steel shell mechanism of a transition section of the reinforced concrete composite tower according to the invention, and referring to fig. 9, the method includes: step S101 to step S106.

Step S101: placing and positioning the bearing plate unit 100 upside down;

step S102: assembling an inner wall plate unit 300 on the pressure bearing plate unit 100, and assembling and welding a longitudinal partition 400 on a wall plate of the inner wall plate unit 300;

step S103: the horizontal steel bars 330 sequentially pass through the longitudinal partition 400 and the first vertical stiffening 310 on the inner wall plate unit 300, so that the horizontal steel bars 310 on the adjacent wall plates of the inner wall plate unit 300 are mutually crossed;

step S104: assembling and welding a straight outer wall plate unit based on the bearing plate unit 100 and the inner wall plate unit 300;

step S105: the outer wall plate circumferential steel bars 230 sequentially penetrate through the longitudinal partition 400 and the second vertical stiffening ribs 210 on the straight outer wall plate units, so that the outer wall plate circumferential steel bars 230 are circumferentially arranged along the outer wall plate units 200;

step S106: and assembling and welding arc outer wall plate units between each two adjacent straight outer wall plate units.

According to the structural characteristics of the steel shell mechanism of the transition section, a vertical assembly method in a flip-chip state is adopted, namely one side of the top bearing plate unit 100 is reversely arranged on the bottom side jig frame, compared with normal assembly, the bearing plate unit 100 can serve as an assembly reference of other parts, the effect of supporting other parts is achieved, the lifting assembly and the positioning of the bearing plate unit 100 are relatively easy, and the assembly sequence is shown in fig. 10 to 15.

In step S101, as shown in fig. 10, the bearing plate unit 100 is positioned and assembled on the jig frame platform, and the bearing plate unit 100 is placed upside down.

In step S102, as shown in fig. 11, the inner wall plate unit 300 is assembled in a frame type integral structure by using the assembly position line drawn on the pressure-bearing plate unit 100, and the four corner butt welds and the corner joint welds of the inner wall plate unit 300 and the pressure-bearing plate unit 100 are integrally welded after the size and the inclination angle of the box mouth are controlled.

And then, the longitudinal partition 400 between the inner wall plate unit 300 and the outer wall plate unit 200 is assembled by using the assembly position line drawn from the upper sides of the pressure bearing plate unit 100 and the inner wall plate unit 300, and after the longitudinal partition 400 meets the size requirement, the angle joint or butt weld between the longitudinal partition 400 and the inner wall plate unit 300 and the pressure bearing plate unit 100 is welded.

In step S103, as shown in fig. 12, in order not to affect the welding quality between the longitudinal separator 400 and the inner wall plate unit 300, after the welding is completed, the horizontal reinforcing bars 330 are sequentially passed through the reinforcing bar holes on the first vertical stiffener 310 on the inner wall plate unit 300 and the reinforcing bar holes on the longitudinal separator 400, and are temporarily fixed.

In step S104, as shown in fig. 13, the straight outer wall plate unit is assembled with the assembly position line of the inner wall plate unit 300 and the pressure bearing plate unit 100 as a reference, the size of the box opening and the inclination angle of the wall plate are controlled, and after the size and angle meet the size requirement, the fillet welds between the straight outer wall plate unit and the pressure bearing plate unit 100 and the vertical partition 400 are welded.

In step S105, as shown in fig. 14, after the welding is completed, the outer wall plate hoop reinforcement 230 is sequentially passed through the reinforcement holes in the second vertical stiffener 210 and the reinforcement holes in the longitudinal partition 400 of the outer wall plate unit 200, and is temporarily fixed.

In step S106, as shown in fig. 15, the straight outer wall plate unit 200 and the pressure-bearing plate unit 100 are used as references, and the four-corner-attached arc outer wall plate unit is assembled, so that the outer wall plate unit 200 is in a frame-type integral structure, the size and the inclination angle of the box mouth are controlled, the butt welding seam dislocation between the arc outer wall plate unit and the straight outer wall plate unit is controlled, and welding is performed after the requirements are met.

When the arc outer wall plate unit and the straight outer wall plate unit are welded in butt joint, the annular reinforcing steel bar penetrated by the straight outer wall plate unit is pulled to one side, the joint position exceeds the butt joint position of the wall plates, after the butt joint is welded, when the arc outer wall plate unit and the straight outer wall plate unit on the other side are welded in butt joint, the annular reinforcing steel bar is pulled to the side which is welded in advance, and therefore the welding quality of the butt joint is not affected by the reinforcing steel bar.

After the welding is finished, the circumferential steel bars penetrating into the straight wall plate units are pulled back to reset, and the circumferential steel bar mechanical joints penetrating into the circular arc outer wall plate units in advance are connected, so that the circumferential steel bars around the outer wall plate are connected.

In one embodiment, the method further comprises: and pre-splicing the steel shell mechanism and the steel tower section at the upper part of the steel shell mechanism so as to control the matching precision of the interface of the upper end of the steel shell mechanism and the steel tower section at the upper part, and control the dislocation between the steel shell mechanism and the integral linear and interface butt joint plate of the steel tower section at the upper part.

Specifically, as shown in fig. 16, in order to achieve the matching precision of the line shape and the interface size of the steel shell mechanism and the bolting tower section at the upper part of the steel shell mechanism, after the steel shell mechanism of the transition section is manufactured, after the construction site is erected, the steel shell mechanism is injected with concrete to form a reinforced concrete combined transition section, the transition section is matched and pre-spliced with the bolting tower section T2 at the upper part of the transition section (the upper part of the section is in bolting, the bottom of the section is in welding butt joint with the transition section T1), and the dislocation between the line shape and the box mouth plate parts of the sections is mainly corrected, so that the butt joint dislocation is not more than 1mm.

In one embodiment, the method further comprises: and (3) integrally machining the top section of the steel shell mechanism to ensure the accuracy of the overall flatness of the top section of the steel shell mechanism.

Specifically, as shown in fig. 17, the bolting face of the upper port of the bolting tower section T2 of the upper part of the steel shell mechanism of the transition section adopts section metal contact and bolting force transmission by bolts, the steel-concrete combination transition section has the machining precision of the section required to be within 0.25mm, the verticality of the axis required to be within 1/10000 and the precision required to be extremely high. After the transition section is erected, in order to reduce welding shrinkage and uneven shrinkage of a circumferential weld between a butt weld of a construction site between an upper bolting section T2 and a steel-concrete combined transition section T1 and reduce the influence of welding on a tower axis, a large floor type boring and milling machine is utilized to integrally machine the top section of the steel-concrete combined transition section, the integral flatness precision of the section is ensured to be within 0.25mm, the machining precision identical with that of the upper bolting tower section is ensured, and the purpose is to control the weld gap between the T1 and T2 sections to be uniform and consistent and reduce the influence of the circumferential weld shrinkage on the section axis as much as possible.

In one embodiment, the method further comprises: and carrying out secondary vertical pre-splicing on the steel shell mechanism and the steel tower section at the upper part of the steel shell mechanism, accurately adjusting the integral line shape between the steel shell mechanism and the upper steel tower section, ensuring the uniformity of welding seams between the integral machining edge at the top of the steel shell mechanism and the upper steel tower section plate, further ensuring the uniform shrinkage after site girth welding, reducing the line shape influence between the integral tower section after welding, and enabling the integral tower section to be transited to the upper metal contact bolting the steel tower section mounting connection precision requirement.

Specifically, the T1 and the T2 are subjected to secondary vertical pre-splicing again, uniformity of gaps between the circular seams and perpendicularity deviation of four-side axes are verified, and the 1/10000-axis perpendicularity requirement is met.

As shown in fig. 18, the transition section T1 of the reinforced concrete composite tower is schematically shown in use together with the upper steel tower section T2 and the lower tower section T3.

By the manufacturing method of the steel shell mechanism of the transition section of the steel-concrete combined tower, the manufacturing precision and quality of the steel shell mechanism of the steel-concrete combined transition section are guaranteed, so that the construction progress can be accelerated in specific construction. Meanwhile, the transition connection between the sections of different types of steel towers is ensured, the technology is advanced and reliable, the cost is saved, and the economic and social benefits are obvious.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the above description are directional or positional relationships as indicated based on the drawings, merely to facilitate description of the embodiments of the present disclosure and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus are not to be construed as limiting the embodiments of the present disclosure.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the presently disclosed embodiments, the terms "mounted," "connected," "secured," and the like are to be construed broadly, as well as being either fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In the presently disclosed embodiments, unless expressly stated and limited otherwise, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact 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 specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (9)

1. A steel shell mechanism for a transition section of a reinforced concrete composite tower, the steel shell mechanism comprising:

the device comprises a bearing plate unit, an outer wall plate unit, an inner wall plate unit, a plurality of longitudinal partition plates, a plurality of horizontal steel bars and a plurality of outer wall plate circumferential steel bars;

the inner wall plate units are arranged at the bottom of the bearing plate units in a columnar mode, and an inner bin formed by the inner wall plate units is communicated with the bearing plate units to form an inner bin hole; the inner wall plate unit is provided with a plurality of first vertical stiffening ribs and a plurality of first horizontal circumferential stiffening ribs;

the top of the outer wall plate unit is arranged on the outer wall of the bearing plate unit in a surrounding mode; the wall plates of the outer wall plate units are also provided with a plurality of second vertical stiffening and a plurality of second horizontal circumferential stiffening;

the longitudinal partition plate is arranged between the outer wall plate unit and the inner wall plate unit so as to fixedly connect the outer wall plate and the inner wall plate;

the horizontal reinforcing steel bars penetrate through the longitudinal partition plates and the first vertical stiffening plates along the horizontal direction, and the horizontal reinforcing steel bars on the adjacent wall plates of the inner wall plate units are mutually intersected;

the outer wallboard circumferential reinforcement is penetrated in the longitudinal partition plate and the second vertical stiffening inwards along the horizontal direction, and the outer wallboard circumferential reinforcement is circumferentially arranged along the outer wallboard unit.

2. The steel shell mechanism of a transition section of a steel and concrete composite tower of claim 1, wherein said inner wall panel unit is of variable cross-section construction, the cross-section of the top end of said inner wall panel unit being of a smaller size than the cross-section of the bottom end of said inner wall panel unit.

3. The steel shell mechanism of a transition section of a reinforced concrete composite tower according to claim 1, wherein the exterior wall panel units comprise four straight exterior wall panel units and four circular arc exterior wall panel units, which are sequentially connected at intervals so as to surround the exterior wall of the bearing plate unit.

4. The steel shell mechanism of a transition section of a reinforced concrete composite tower of claim 1, wherein the first vertical stiffener and the first horizontal circumferential stiffener are disposed perpendicular to each other, and the second vertical stiffener and the second horizontal circumferential stiffener are disposed perpendicular to each other.

5. The steel shell mechanism of a transition section of a reinforced concrete composite tower according to claim 1, wherein the bearing plate unit is further provided with a pair of parallel webs and a plurality of stiffening plates, the webs are arranged on the bearing plate unit along the sides of the inner wall plate mounting holes, and the stiffening plates are arranged between the webs and the outer wall plate unit.

6. A method of manufacturing a steel shell mechanism for a transition section of a reinforced concrete composite tower, the method comprising:

inverting the bearing plate unit for positioning;

assembling an inner wall plate unit on the bearing plate unit, and assembling and welding a longitudinal baffle plate on a wall plate of the inner wall plate unit;

the horizontal steel bars sequentially penetrate through the longitudinal partition plates and the first vertical stiffening on the inner wall plate units so that the horizontal steel bars on the adjacent wall plates of the inner wall plate units are mutually crossed;

assembling and welding a straight outer wall plate unit according to the bearing plate unit and the inner wall plate unit as references;

the outer wall plate circumferential reinforcing steel bars sequentially penetrate through the longitudinal partition plates and the second vertical stiffening ribs on the straight outer wall plate units, so that the outer wall plate circumferential reinforcing steel bars are circumferentially arranged along the outer wall plate units;

and assembling and welding arc outer wall plate units between each two adjacent straight outer wall plate units.

7. The method of manufacturing a steel shell mechanism for a transition section of a steel-concrete composite tower of claim 6, further comprising:

and pre-splicing the steel shell mechanism and the steel tower section at the upper part of the steel shell mechanism so as to control the matching precision of the interface of the upper end of the steel shell mechanism and the steel tower section at the upper part, and control the dislocation between the steel shell mechanism and the integral linear and interface butt joint plate of the steel tower section at the upper part.

8. The method of manufacturing a steel shell mechanism for a transition section of a steel-concrete composite tower of claim 7, further comprising:

and (3) integrally machining the top section of the steel shell mechanism to ensure the accuracy of the overall flatness of the top section of the steel shell mechanism.

9. The method of manufacturing a steel shell mechanism for a transition section of a steel-concrete composite tower of claim 8, further comprising:

and carrying out secondary vertical pre-splicing on the steel shell mechanism and the steel tower section at the upper part of the steel shell mechanism, accurately adjusting the integral line shape between the steel shell mechanism and the upper steel tower section, ensuring the uniformity of welding seams between the integral machining edge at the top of the steel shell mechanism and the upper steel tower section plate, further ensuring the uniform shrinkage after site girth welding, reducing the line shape influence between the integral tower section after welding, and enabling the integral tower section to be transited to the upper metal contact bolting the steel tower section mounting connection precision requirement.