CN215052024U - Few support bearing structure of cable-stay bridge steel tower - Google Patents
Few support bearing structure of cable-stay bridge steel tower Download PDFInfo
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Abstract
The application discloses few support bearing structure of cable-stay bridge steel tower, this few support bearing structure of cable-stay bridge steel tower includes: the lower-layer support upright is arranged on the inner side of the steel tower, the lower end of the lower-layer support upright is fixed on the base, and the upper end of the lower-layer support upright is fixedly connected with the middle cross beam section of the steel tower; the upper-layer support upright is arranged on the inner side of the steel tower, the lower end of the upper-layer support upright is fixed on the middle cross beam section of the steel tower, and the upper end of the upper-layer support upright is used for supporting the top section of the steel tower; and the transverse support is arranged on the inner side of the steel tower, and two ends of the transverse support are respectively connected with the inner sides of the adjacent steel tower sections. This application has realized reducing the use quantity of support, improves the technological effect of construction safety nature, and then has solved among the correlation technique cable-stay bridge steel tower work progress support and has occupied a great deal, has the problem of great potential safety hazard.
Description
Technical Field
The application relates to the technical field of bridge engineering construction, in particular to a cable-stayed bridge steel tower less-support supporting structure.
Background
With the gradual increase of cable-stayed bridge design in recent years, the steel tower is widely applied by the characteristics of light weight, less diseases in later period, convenient processing and attractive appearance, and in order to set up a construction platform meeting the installation of the steel tower, the conventional method adopts a full-hall bracket method and adopts a single crawler crane hoisting construction process. Traditional full hall scaffold frame construction convenience, the unilateral sets up crawler crane, but it has following shortcoming: (1) the number of the brackets is large, the occupied number is large, and great potential safety hazards exist; (2) the plate buckle scaffold is generally required to be not more than 24m, otherwise, additional design and calculation are required; (3) the operation radius of a single crawler crane is too large, so that the hoisting capacity is insufficient, and the construction safety is influenced.
Aiming at the problems that in the related art, the number of the occupied supports is large and great potential safety hazards exist in the construction process of the steel tower of the cable-stayed bridge, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a few support bearing structure of cable-stay bridge steel tower to solve among the correlation technique cable-stay bridge steel tower work progress support and occupy a large amount, have the problem of great potential safety hazard.
In order to realize above-mentioned purpose, this application provides a few support bearing structure of cable-stay bridge steel tower, and this few support bearing structure of cable-stay bridge steel tower includes: the lower-layer support upright is arranged on the inner side of the steel tower, the lower end of the lower-layer support upright is fixed on the base, and the upper end of the lower-layer support upright is fixedly connected with the middle cross beam section of the steel tower; the upper-layer support upright is arranged on the inner side of the steel tower, the lower end of the upper-layer support upright is fixed on the middle cross beam section of the steel tower, and the upper end of the upper-layer support upright is used for supporting the top section of the steel tower; and the transverse support is arranged on the inner side of the steel tower, and two ends of the transverse support are respectively connected with the inner sides of the adjacent steel tower sections.
Furthermore, the lower-layer support stand columns are arranged in two rows, and each row of the lower-layer support stand columns is provided with two;
the upper support stand columns are arranged in two rows, and each row of upper support stand columns is provided with two.
Further, the transverse supports are arranged into two groups and distributed front and back, and the upper layer support stand column and the lower layer support stand column are located between the two groups of transverse supports.
Furthermore, the first end of the transverse support is bolted with the corresponding steel tower segment, and the second end of the transverse support is in interference connection with the corresponding steel tower segment.
Further, still include and locate the inboard horizontal support of steel tower section, the second end of horizontal support sets up on horizontal support.
The steel tower comprises a steel tower segment, and is characterized by further comprising a longitudinal support piece arranged on the inner side of the steel tower segment, wherein one side of the longitudinal support piece is provided with an inclined plane matched with the steel tower segment in inclination, and the other side of the longitudinal support piece is provided with a vertical plane; the second end of the transverse bracket is connected with the vertical surface of the longitudinal support member.
Furthermore, the second end of the transverse support is provided with a buffer piece, and the second end of the transverse support is in abutting connection with the vertical surface of the longitudinal supporting piece through the buffer piece.
Furthermore, a first bearing beam is arranged at the upper end of the lower-layer support upright post, a second bearing beam is arranged at the upper end of the upper-layer support upright post, and an inclined strut is arranged between the second bearing beam and the upper-layer support upright post; the upper end of the second bearing beam is provided with a supporting component used for supporting the top section of the steel tower, and the supporting component is provided with an arc-shaped supporting surface.
Furthermore, the tower also comprises a circumferential platform arranged on the steel tower segment and a transverse channel connected with the circumferential platform.
Furthermore, the ladder stand structure comprises a connecting base, a middle cross beam section of the steel tower and a ladder stand structure for connecting the middle cross beam section of the steel tower and the top section of the steel tower.
According to another aspect of the present application, there is provided a cable-stayed bridge steel tower few-bracket symmetrical construction method, using the cable-stayed bridge steel tower few-bracket supporting structure, comprising the following steps:
the steel tower is divided into sections according to transportation conditions, hoisting adjustment and bearing conditions, and the distance between diaphragm plates at two ends of each section is 0.5-1m from a notch, wherein the sections comprise a left steel tower section, a right steel tower section, a middle cross beam section of the steel tower and a top section of the steel tower;
fixing the lower-layer support stand columns on the base, arranging the lower-layer support stand columns into two rows, and arranging two lower-layer support stand columns in each row;
the method comprises the following steps that two cranes are adopted to symmetrically hoist a left steel tower segment and a right steel tower segment at the same time, the left steel tower segment and the right steel tower segment are sequentially welded and fixed, a transverse support is erected after the left steel tower segment and the right steel tower segment are welded and fixed, the first end of the transverse support is fixed with the left steel tower segment, and the second end of the transverse support is fixed with the right steel tower segment;
after the left steel tower segment and the right steel tower segment on the two sides of the beam segment in the steel tower are hoisted and welded, hoisting the beam segment in the steel tower and supporting the beam segment by utilizing the lower-layer support upright column, and welding and fixing the two sides of the beam segment in the steel tower and the corresponding left steel tower segment and right steel tower segment;
fixing upper-layer support upright posts at the upper end of a cross beam section in the steel tower, wherein the upper-layer support upright posts are arranged in two rows, and each row of the upper-layer support upright posts is provided with two upper-layer support upright posts;
adopt two loop wheel machines symmetry hoist remaining left side steel tower segment section, right side steel tower segment section and steel tower top segment simultaneously to set up horizontal support, horizontal support's first end and left side steel tower segment section are fixed, and second end and right side steel tower segment section are fixed, and the steel tower top segment section that is located the bottommost utilizes upper support stand to support, and all the other steel tower top segments superpose fixedly in proper order.
Furthermore, annular platforms are arranged on the left steel tower section and the right steel tower section before hoisting, a transverse channel is arranged between the two annular platforms for communication after the opposite left steel tower section and the right steel tower section are welded and fixed, and the transverse channel is supported by a transverse support;
before hoisting, a transverse support and a longitudinal support are fixedly installed on the inner side of the left steel tower section, a bolting component is fixedly installed on the inner side of the right steel tower section, when the transverse support is erected, a first end of the transverse support is fixedly bolted with the bolting component, and a second end of the transverse support is erected on the transverse support and is abutted against the longitudinal support;
a first group of ladder climbing structures are arranged between the base and the middle cross beam section of the steel tower, and a second group of ladder climbing structures are arranged between the middle cross beam section of the steel tower and the top section of the steel tower.
In the embodiment of the application, the lower-layer support stand column is arranged on the inner side of the steel tower, the lower end of the lower-layer support stand column is fixed on the base, and the upper end of the lower-layer support stand column is fixedly connected with the middle cross beam section of the steel tower; the upper-layer support upright is arranged on the inner side of the steel tower, the lower end of the upper-layer support upright is fixed on the middle cross beam section of the steel tower, and the upper end of the upper-layer support upright is used for supporting the top section of the steel tower; horizontal support, it is inboard to locate the steel tower, horizontal support's both ends are connected with adjacent steel tower festival section inboard respectively, it supports to crossbeam festival section in the steel tower to have reached to use lower floor's support stand inboard to the steel tower, utilize crossbeam festival section to bear upper support stand in the steel tower, utilize horizontal support to carry out the purpose of horizontal support to the steel tower festival section, thereby realized reducing the use quantity of support, the technological effect of construction safety improves, and then solved cable-stay bridge steel tower construction process support among the correlation technique and occupied a great deal, there is the problem of great potential safety hazard.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present application;
fig. 2 is a schematic view of a hoisting structure according to an embodiment of the application;
FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;
the steel tower comprises a base 1, steel tower sections 2, a circumferential platform 3, a transverse support 4, a transverse channel 5, a lower support upright column 6, a middle cross beam section 7 of the steel tower, a ladder stand structure 8, a top section 9 of the steel tower, an upper support upright column 10, a longitudinal support 12, a buffer piece 13 and a transverse support 14.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the embodiment of the present application provides a few support bearing structure of cable-stay bridge steel tower, and this few support bearing structure of cable-stay bridge steel tower includes: the lower-layer support upright 6 is arranged on the inner side of the steel tower, the lower end of the lower-layer support upright 6 is fixed on the base 1, and the upper end of the lower-layer support upright 6 is fixedly connected with the middle cross beam section 7 of the steel tower; the upper-layer support upright post 10 is arranged on the inner side of the steel tower, the lower end of the upper-layer support upright post 10 is fixed on the middle cross beam section 7 of the steel tower, and the upper end of the upper-layer support upright post is used for supporting the top section 9 of the steel tower; and the transverse support 4 is arranged on the inner side of the steel tower, and two ends of the transverse support 4 are respectively connected with the inner sides of the adjacent steel tower sections 2.
In the embodiment, the hoisting support is arranged in the main tower, and the steel pipe upright post is adopted on the ground foundation
The connecting support of the leveling bracket is in a form of connecting support, so that a base 1 structure is formed, and the base 1 is a tower column base 1. The support stand is vertical to adopt flange joint, and the support stand includes lower floor's support stand 6 and upper support stand 10, and wherein lower floor's support stand 6 is fixed on base 1, and its length equals the height of crossbeam festival section 7 apart from base 1 in the steel tower to it supports to realize that crossbeam festival section 7 can utilize lower floor's support stand 6 after the hoist and mount in the steel tower. And upper support column 10 is installed on steel tower middle beam section 7, and upper support column 10 is used for supporting steel tower top section 9 to bear upper support column 10 and steel tower top section 9 through steel tower middle beam section 7, realize bearing the upper structure construction atress. The lower-layer support upright posts 6 are arranged in two rows, and each row of the lower-layer support upright posts 6 is provided with two; the upper bracket upright columns 10 are arranged in two rows, and two upper bracket upright columns 10 are arranged in each row, so that the structure is more stable. The two rows of upper support uprights 10 and the two rows of lower support uprights 6 are connected by cross braces to form a frame-like support structure.
The steel tower needs to be segmented into a plurality of steel tower sections 2 before being hoisted, when the hoisting and welding of the left and right steel tower sections 2 are finished, the transverse support 4 is installed on the inner side of the steel tower, and two ends of the transverse support 4 are respectively connected with the corresponding steel tower sections 2, so that the steel tower sections 2 are prevented from toppling over.
This embodiment has reached and has used lower floor's support stand 6 to support crossbeam festival section 7 in the steel tower inboard, utilize crossbeam festival section 7 to bear upper support stand 10 in the steel tower, utilize horizontal support 4 to carry out the purpose of horizontal support to steel tower festival section 2, thereby realized reducing the use quantity of support, improve the technological effect of construction safety, and then solved among the correlation technique cable-stay bridge steel tower work progress support and occupied a large number more, there is the problem of great potential safety hazard.
Further, horizontal support 4 sets up to two sets of and is the front and back distribution, and upper support stand 10 and lower floor's support stand 6 are located between two sets of horizontal supports 4 to carry out stable horizontal support to each part steel tower festival section 2, the first end of horizontal support 4 and the 2 bolts of steel tower festival section that correspond, the second end is contradicted with corresponding steel tower festival section 2 and is connected.
Further, the steel tower comprises a transverse support member 14 arranged on the inner side of the steel tower segment 2, a longitudinal support member 12 arranged on the inner side of the steel tower segment 2, wherein the second end of the transverse support member 4 is erected on the transverse support member 14, one side of the longitudinal support member 12 is provided with an inclined surface matched with the inclination of the steel tower segment 2, and the other side of the longitudinal support member 12 is provided with a vertical surface; the second end of the transversal support 4 is connected to the vertical face of the longitudinal support 12.
In this embodiment, because the overall structure of cable-stay bridge steel tower is big end down, consequently the both sides of each steel tower segment 2 are the inclined plane, connect for horizontal support 4 and the steel tower segment 2 of slope, consequently at the steel tower segment 2 inboard installation horizontal support piece 14 and the longitudinal support piece 12 that does not bolt with horizontal support 4, utilize the vertical face of longitudinal support piece 12 and the terminal surface of horizontal support piece 4 to contradict, utilize horizontal support piece 14 to bear horizontal support piece 4 to provide the stable support to steel tower segment 2.
Further, the second end of the transverse support 4 is provided with a buffer 13, the second end of the transverse support 4 is in interference connection with the vertical surface of the longitudinal support 12 through the buffer 13, the impact force generated between the transverse support 4 and the steel tower segment 2 is reduced through the buffer 13, and the buffer 13 can be a rubber pad or other elastic elements.
Further, a first bearing beam is arranged at the upper end of the lower-layer support upright 6, a second bearing beam is arranged at the upper end of the upper-layer support upright 10, and an inclined strut is arranged between the second bearing beam and the upper-layer support upright 10; the upper end of the second girder is provided with a support assembly for supporting the top section 9 of the steel tower, which support assembly has an arc-shaped support surface.
Further, the tower comprises a circumferential platform 3 arranged on the steel tower segment 2 and a transverse channel 5 connected with the circumferential platform 3. Hoop platform 3 is installed at 2 hookup locations of steel tower festival section to form operation platform, the platform adopts the shaped steel welding, sets up the guardrail all around, and the hoop platform 3 of the left and right sides then connects through 5 platforms of cross aisle, and the usable horizontal stand 4 of 5 platforms of cross aisle is installed as the support, and convenient construction and personnel are current.
Further, the ladder climbing device comprises a base 1, a middle cross beam section 7 of the steel tower, and a ladder climbing structure 8 which is used for connecting the middle cross beam section 7 of the steel tower and a top section 9 of the steel tower. The pedestrian ladder structure 8 with the full length is arranged in the left and right sides of the vertical direction, a rest platform is arranged at the middle cross beam, safety guardrails are arranged on the periphery of the ladder structure 8 and are connected with the steel pipes through reinforcing connecting rods, and the problem that welding defects caused by the fact that the contact area of the ladder structure 8 and the steel pipes is insufficient affect safety is avoided.
According to another aspect of the present application, there is provided a cable-stayed bridge steel tower few-bracket symmetrical construction method, using the cable-stayed bridge steel tower few-bracket supporting structure, comprising the following steps:
the steel tower is divided into sections according to transportation conditions, hoisting adjustment and bearing conditions, and the distance between diaphragm plates at two ends of each section is 0.5-1m from a notch, wherein the sections comprise a left steel tower section 2, a right steel tower section 2, a middle cross beam section 7 of the steel tower and a top section 9 of the steel tower;
fixing the lower-layer support upright posts 6 on the base 1, arranging the lower-layer support upright posts 6 into two rows, and arranging two lower-layer support upright posts 6 in each row;
the method comprises the following steps that two cranes are adopted to symmetrically hoist a left steel tower segment 2 and a right steel tower segment 2 at the same time, the left steel tower segment 2 and the right steel tower segment 2 are sequentially welded and fixed, a transverse support 4 is erected after the left steel tower segment 2 and the right steel tower segment 2 are welded and fixed, the first end of the transverse support 4 is fixed with the left steel tower segment 2, and the second end of the transverse support is fixed with the right steel tower segment 2;
after the left steel tower segment 2 and the right steel tower segment 2 on two sides of the middle cross beam segment 7 of the steel tower are hoisted and welded, hoisting the middle cross beam segment 7 of the steel tower and supporting the middle cross beam segment 7 by using the lower-layer support upright 6, and welding and fixing two sides of the middle cross beam segment 7 of the steel tower with the corresponding left steel tower segment 2 and right steel tower segment 2;
fixing upper-layer support upright posts 10 at the upper ends of the beam sections 7 in the steel tower, wherein the upper-layer support upright posts 10 are arranged in two rows, and two upper-layer support upright posts 10 are arranged in each row;
adopt two loop wheel machines symmetry hoist remaining left side steel tower segment 2, right side steel tower segment 2 and steel tower top segment 9 simultaneously to set up transverse bracket 4, transverse bracket 4's first end and left side steel tower segment 2 are fixed, and second end and right side steel tower segment 2 are fixed, and steel tower top segment 9 that is located the bottom utilizes upper support stand 10 to support, and all the other steel tower top segments 9 superpose fixedly in proper order.
Further, the circumferential platforms 3 are arranged on the left steel tower section 2 and the right steel tower section 2 before hoisting, after the opposite left steel tower section 2 and the right steel tower section 2 are welded and fixed, the two circumferential platforms 3 are communicated through a transverse channel 5, and the transverse channel 5 is supported through a transverse support 4;
before hoisting, a transverse support 14 and a longitudinal support 12 are fixedly installed on the inner side of the left steel tower segment 2, a bolting component is fixedly installed on the inner side of the right steel tower segment 2, when the transverse support 4 is erected, a first end of the transverse support 4 is fixedly bolted with the bolting component, and a second end of the transverse support 4 is erected on the transverse support 14 and is abutted against the longitudinal support 12;
a first set of ladder climbing structures 8 is arranged between the foundation 1 and the middle cross beam section 7 of the steel tower, and a second set of ladder climbing structures 8 is arranged between the middle cross beam section 7 of the steel tower and the top section 9 of the steel tower. The pedestrian ladder stand is arranged in the left and right sides in the vertical direction, a rest platform is arranged at the middle cross beam, safety guardrails are arranged on the periphery of the ladder stand and are connected with steel pipes through reinforcing connecting rods, and the problem that welding defects caused by insufficient contact area of the ladder stand and the steel pipes affect safety is avoided.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a few support bearing structure of cable-stay bridge steel tower which characterized in that includes:
the lower-layer support upright is arranged on the inner side of the steel tower, the lower end of the lower-layer support upright is fixed on the base, and the upper end of the lower-layer support upright is fixedly connected with the middle cross beam section of the steel tower;
the upper-layer support upright is arranged on the inner side of the steel tower, the lower end of the upper-layer support upright is fixed on the middle cross beam section of the steel tower, and the upper end of the upper-layer support upright is used for supporting the top section of the steel tower;
and the transverse support is arranged on the inner side of the steel tower, and two ends of the transverse support are respectively connected with the inner sides of the adjacent steel tower sections.
2. The cable-stayed bridge steel tower less-bracket supporting structure according to claim 1, wherein the lower bracket columns are arranged in two rows, and each row of the lower bracket columns is provided with two;
the upper support stand columns are arranged in two rows, and each row of upper support stand columns is provided with two.
3. The cable-stayed bridge steel tower less-bracket supporting structure according to claim 2, wherein the transverse brackets are arranged in two groups and distributed in a front-back manner, and the upper-layer bracket upright column and the lower-layer bracket upright column are positioned between the two groups of transverse brackets.
4. A cable-stayed bridge steel tower less-bracket supporting structure according to claim 3, wherein the first end of the transverse bracket is bolted with the corresponding steel tower segment, and the second end is connected with the corresponding steel tower segment in an interference manner.
5. A cable-stayed bridge steel tower less-bracket supporting structure according to claim 4, characterized by further comprising a transverse support member arranged at the inner side of the steel tower segment, and the second end of the transverse support member is erected on the transverse support member.
6. The cable-stayed bridge steel tower less-bracket supporting structure as claimed in claim 5, further comprising a longitudinal supporting member arranged on the inner side of the steel tower segment, wherein one side of the longitudinal supporting member is provided with an inclined surface matched with the inclination of the steel tower segment, and the other side of the longitudinal supporting member is provided with a vertical surface;
the second end of the transverse bracket is connected with the vertical surface of the longitudinal support member.
7. The few-bracket supporting structure of a cable-stayed bridge steel tower according to claim 6, characterized in that a buffer member is arranged at the second end of the transverse bracket, and the second end of the transverse bracket is in interference connection with the vertical surface of the longitudinal supporting member through the buffer member.
8. The cable-stayed bridge steel tower less-bracket supporting structure according to claim 7, wherein a first bearing beam is arranged at the upper end of the lower-layer bracket upright post, a second bearing beam is arranged at the upper end of the upper-layer bracket upright post, and an inclined strut is arranged between the second bearing beam and the upper-layer bracket upright post;
the upper end of the second bearing beam is provided with a supporting component used for supporting the top section of the steel tower, and the supporting component is provided with an arc-shaped supporting surface.
9. The cable-stayed bridge steel tower less-bracket supporting structure according to claim 1, further comprising a circumferential platform arranged on the steel tower segment and a transverse channel connecting the circumferential platform.
10. A cable-stayed bridge steel tower less-bracket supporting structure according to claim 1, further comprising a ladder climbing structure connecting the base and the steel tower middle cross beam segment and connecting the steel tower middle cross beam segment and the steel tower top segment.
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| CN202121184320.9U CN215052024U (en) | 2021-05-28 | 2021-05-28 | Few support bearing structure of cable-stay bridge steel tower |
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| CN202121184320.9U CN215052024U (en) | 2021-05-28 | 2021-05-28 | Few support bearing structure of cable-stay bridge steel tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174838A (en) * | 2021-05-28 | 2021-07-27 | 中交路桥建设有限公司 | Cable-stayed bridge steel tower few-bracket supporting structure and symmetrical construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174838A (en) * | 2021-05-28 | 2021-07-27 | 中交路桥建设有限公司 | Cable-stayed bridge steel tower few-bracket supporting structure and symmetrical construction method |
| CN113174838B (en) * | 2021-05-28 | 2025-03-18 | 中交路桥建设有限公司 | Cable-stayed bridge steel tower less-bracket support structure and symmetrical construction method |
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