CN111560852B - Wind resisting device for large-span cable-stayed bridge in construction period and construction method - Google Patents
Wind resisting device for large-span cable-stayed bridge in construction period and construction method Download PDFInfo
- Publication number
- CN111560852B CN111560852B CN202010399239.6A CN202010399239A CN111560852B CN 111560852 B CN111560852 B CN 111560852B CN 202010399239 A CN202010399239 A CN 202010399239A CN 111560852 B CN111560852 B CN 111560852B
- Authority
- CN
- China
- Prior art keywords
- wind
- resistant
- adjusting
- corbel
- stayed bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of civil engineering construction, and particularly relates to a wind resisting device and a construction method for a large-span cable-stayed bridge in a construction period, wherein the wind resisting device comprises a wind resisting bracket and an adjusting mechanism connected with the wind resisting bracket; the adjusting mechanism comprises an adjusting base, an error adjusting unit and a sliding adjusting unit; the error adjusting unit is arranged on the adjusting base, the adjusting base is arranged below the wind-resistant corbel and is connected with the wind-resistant corbel through the error adjusting unit, and the error of the installation distance between the wind-resistant corbel and the cable-stayed bridge is adjusted through the error adjusting unit; the sliding adjusting unit is arranged at the bottom of the adjusting base and drives the wind-resistant corbel to be installed in a sliding mode during construction of the cable-stayed bridge. The invention can eliminate the distance error when the wind-resistant bracket is installed and increase the wind-resistant strength; meanwhile, the friction force in the installation process can be reduced; the occurrence of distortion is avoided; the construction operation is simple and convenient, and the steel construction quantity of anti-wind bracket reduces, reduces construction cost.
Description
Technical Field
The invention belongs to the technical field of civil engineering construction, and particularly relates to a wind resisting device for a large-span cable-stayed bridge in a construction period and a construction method.
Background
In the construction of a large-span cable-stayed bridge, after the bridge is arranged on a tower column, wind-resistant measures are required to be arranged on the bridge and the tower column, so that the bridge is subjected to transverse wind-resistant acting force and other acting forces, and the bridge is kept in a certain state and does not move or twist and rotate; wind resistance measures during the construction of a large-span bridge are as follows: (1) by arranging a wind-resistant temporary pier. When the large-span bridge cantilever frame facility is in working hours, temporary piers can be used as wind-resistant supporting points and are arranged on the land, the construction cost is reasonable and economical, and if the temporary piers are arranged in water, higher construction cost can be generated; (2) by arranging the wind-resistant temporary pivot of the pier-side bracket, the pier-side bracket mainly bears vertical force during construction, and the bearing transverse bearing capacity of the pier-side bracket is weaker; therefore, in the construction period of large cantilever erection, in order to improve the bearing of the transverse wind load, the pier-side bracket scale with a more complex and huge structure needs to be arranged; but has the disadvantage of being expensive.
Therefore, technicians propose new wind-resistant measures, for example, a new wind-resistant measure adopting a wind-resistant corbel is proposed in patent application No. 201210080686.0 (named as a self-balancing wind-resistant device for a long-span bridge), and usually, in the contact process of the wind-resistant corbel with a tower column, a cushion block arranged on the tower column has a good contact surface with the wind-resistant corbel, so that the wind-resistant corbel is more conveniently and directly acted on the tower column to be stressed, but certain installation errors exist during installation; when the wind-resistant bracket and the cushion block move relatively, the wind-resistant bracket and the cushion block bear great static friction force, and the contact friction force between the wind-resistant bracket and the cushion block is great, so that the wind-resistant bracket and the cushion block cannot be effectively installed or the installation and adjustment operation is difficult due to the relative movement; and the steel structure usage is large, and mechanical equipment and manpower consumption are large.
Disclosure of Invention
Aiming at the technical problems of installation error, difficult adjustment and high construction cost in the existing wind resisting device, the invention provides the wind resisting device and the construction method for the large-span cable-stayed bridge in the construction period, which can eliminate the distance error when the wind resisting bracket is installed, ensure that the wind resisting bracket is in close contact with a tower column and increase the wind resisting strength; meanwhile, the wind-resistant corbel is in sliding contact with the tower column during installation, so that the friction force in the installation process is reduced; the wind-resistant corbel can be kept stable, and the occurrence of distortion is avoided; the construction operation is simple and convenient, and the steel construction quantity of anti-wind bracket reduces, saves mechanical equipment and cost of labor, reduces construction cost.
In order to achieve the purpose, the invention adopts the technical scheme that:
a wind-resistant device for a large-span cable-stayed bridge in a construction period comprises a wind-resistant bracket and an adjusting mechanism connected with the wind-resistant bracket; the adjusting mechanism is used for adjusting the wind-resistant corbel to be installed with the tower column in a sliding mode during construction of the cable-stayed bridge and adjusting the installation distance error between the wind-resistant corbel and the cable-stayed bridge.
The adjusting mechanism comprises an adjusting base, an error adjusting unit and a sliding adjusting unit; the error adjusting unit is arranged on the adjusting base, the adjusting base is arranged below the wind-resistant corbel and is connected with the wind-resistant corbel through the error adjusting unit, and the error of the installation distance between the wind-resistant corbel and the cable-stayed bridge is adjusted through the error adjusting unit; the sliding adjusting unit is arranged at the bottom of the adjusting base; the wind-resistant bracket is driven to be installed in a sliding mode during construction of the cable-stayed bridge.
The error adjusting unit comprises an adjusting screw and a nut matched with the adjusting screw; the axial direction of the adjusting screw is parallel to the axial direction of the wind-resistant bracket; one end of the adjusting screw rod is connected with the adjusting base; the other end of the adjusting screw penetrates through the wind-resistant bracket; the nut is sleeved on the adjusting screw and positioned between the wind-resistant corbel and the adjusting base; and adjusting the installation distance error between the wind-resistant corbel and the cable-stayed bridge through the nut.
The sliding adjusting units are multiple and distributed on the bottom of the adjusting base in a row.
The sliding adjusting unit comprises a spherical groove and a rolling ball arranged in the spherical groove; the spherical groove is arranged on the bottom of the adjusting base; the rolling ball is fixed in the spherical groove through a limiting block, and the groove depth of the spherical groove is 1/2-2/3 of the diameter of the rolling ball; the rolling balls drive the wind-resistant brackets to be installed in a sliding mode during construction of the cable-stayed bridge.
The wind-resistant device in the construction period of the large-span cable-stayed bridge further comprises a guide column which is arranged on the adjusting base and penetrates through the wind-resistant corbel; the axial direction of the guide post is parallel to the axial direction of the adjusting screw rod.
The guide posts are two and distributed on two sides of the adjusting screw rod.
A construction method of a wind resisting device in a construction period of a large-span cable-stayed bridge comprises the following steps:
1) when the cable-stayed bridge is constructed, the bridge is placed on a tower column, and a cushion block is arranged on the tower column; wind-resistant devices are arranged at the joints of the bridges and the tower columns, and the wind-resistant brackets and the cushion blocks are installed in a sliding contact manner through the adjusting mechanisms; and the wind-resistant corbels at the two ends of the tower column are reinforced through the wind-resistant supports at the same side of the bridge;
2) the installation distance error between the wind-resistant bracket and the tower column is adjusted through the adjusting mechanism, so that the wind-resistant bracket and the tower column are tightly contacted.
The step 1) is realized by the way that the wind-resistant corbel is slidably arranged at the joint of the tower column and the bridge through the sliding adjusting unit;
the step 2) is realized by adjusting the installation distance error of the wind-resistant corbel and the tower column through the error adjusting unit to enable the wind-resistant corbel to be in close contact with the tower column.
The concrete realization process of the step 1) is that the rolling balls are used for driving the wind-resistant corbels to be arranged at the connecting part of the tower column and the bridge in a sliding manner on the cushion blocks;
the concrete realization process of the step 2) is that the nut is rotated to drive the adjusting screw rod and the wind-resistant bracket to move relatively, so that the distance error between the wind-resistant bracket and the tower column is reduced, and the wind-resistant bracket is in close contact with the tower column.
The invention has the beneficial effects that:
1. the invention comprises a wind-resistant bracket and an adjusting mechanism connected with the wind-resistant bracket; the adjusting mechanism comprises an adjusting base, an error adjusting unit and a sliding adjusting unit; the error adjusting unit is arranged on the adjusting base, the adjusting base is arranged below the wind-resistant corbel and is connected with the wind-resistant corbel through the error adjusting unit, and the error of the installation distance between the wind-resistant corbel and the cable-stayed bridge is adjusted through the error adjusting unit; the sliding adjusting unit is arranged at the bottom of the adjusting base; the wind-resistant bracket is driven to be installed in a sliding mode during construction of the cable-stayed bridge. The friction force generated by the wind-resistant corbel and the tower column in the installation process is reduced through the sliding adjusting unit, and the installation process is easy and quick; reduce distance error between anti-wind bracket and the column through error adjustment unit, make it with and column in close contact with, anti-wind power is strong, construction operation is simple and convenient, and the use amount of the steel construction of anti-wind bracket obviously reduces, saves mechanical equipment and cost of labor in a large number, reduces construction cost.
2. In the invention, the error adjusting unit comprises an adjusting screw and a nut matched with the adjusting screw; the axial direction of the adjusting screw is parallel to the axial direction of the wind-resistant bracket; one end of the adjusting screw rod is connected with the adjusting base; the other end of the adjusting screw penetrates through the wind-resistant bracket; the nut is sleeved on the adjusting screw and positioned between the wind-resistant corbel and the adjusting base; the installation distance error of the wind-resistant bracket is adjusted through the nut. The sliding adjusting unit comprises a spherical groove and a rolling ball arranged in the spherical groove; the spherical groove is arranged on the bottom of the adjusting base; the rolling ball is matched with the spherical groove, and the rolling ball drives the wind-resistant bracket to be installed in a sliding mode. According to the invention, the distance error existing in the installation of the wind-resistant corbel is eliminated by matching the nut with the adjusting screw, so that the wind-resistant strength is increased; meanwhile, the static friction force applied when the wind-resistant corbel and the cushion block move relatively is solved through the rolling balls, so that the difficulty in installation caused by relative movement during installation is effectively avoided; construction operation is convenient, and construction cost is saved.
3. In the invention, the wind-resistant device in the construction period of the large-span cable-stayed bridge also comprises guide columns which are arranged on the adjusting base and penetrate through the wind-resistant brackets, and the axial directions of the guide columns are all parallel to the axial direction of the adjusting screw rod; the guide post is two. In the installation, the guide post can guarantee the stability of anti-wind bracket, the antitorque effect of playing to effectively avoid the distortion phenomenon that takes place in the anti-wind bracket installation.
4. According to the invention, the whole device is simple in structure, the usage amount of a steel structure is obviously reduced, and the mechanical equipment and labor cost are greatly saved, so that the construction cost is reduced; the installation process construction is easy and simple to handle, effectively ensures the wind-resistant stability under the construction state, effectively reduces the distance error when wind-resistant bracket contacts with the column, and wind-resistant bracket can play fine support to column and bridge, strengthens the wind-resistant ability of bridge and column.
Drawings
Fig. 1 is a schematic view of the overall structure of a wind-resistant corbel 3 according to the present invention;
FIG. 2 is a right side sectional view of the wind-resistant corbel 3 according to the present invention;
FIG. 3 is a schematic sectional view of the wind-resistant corbel 3 according to the present invention;
FIG. 4 is a schematic top view of the cable-stayed bridge according to the present invention;
wherein:
1, a bridge; 2-a column; 3-wind-resistant corbel; 4, cushion blocks; 5, a wind-resistant support; 6, adjusting a screw rod; 7, a nut; 8, adjusting the base; 9-a guide post; 10-rolling ball.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The invention provides a wind-resistant device for a large-span cable-stayed bridge in a construction period, which comprises a wind-resistant bracket 3 and an adjusting mechanism connected with the wind-resistant bracket 3; the wind-resistant corbel 3 is adjusted through the adjusting mechanism, and is installed in a sliding mode during construction of the cable-stayed bridge, and installation distance errors between the wind-resistant corbel 3 and the cable-stayed bridge are adjusted.
In the invention, the adjusting mechanism comprises an adjusting base 8, an error adjusting unit and a sliding adjusting unit; the error adjusting unit is arranged on the adjusting base 8, the adjusting base 8 is arranged below the wind-resistant corbel 3 and is connected with the wind-resistant corbel 3 through the error adjusting unit, and the error of the installation distance between the wind-resistant corbel 3 and the cable-stayed bridge is adjusted through the error adjusting unit; the sliding adjusting unit is arranged at the bottom of the adjusting base 8; the wind-resistant bracket 3 is driven to be installed in a sliding mode during construction of the cable-stayed bridge.
In the invention, the error adjusting unit comprises an adjusting screw 6 and a nut 7 matched with the adjusting screw 6; the axial direction of the adjusting screw 6 is parallel to the axial direction of the wind-resistant bracket 3; one end of the adjusting screw 6 is connected with the adjusting base 8; the other end of the adjusting screw 6 penetrates through the wind-resistant corbel 3; the nut 7 is sleeved on the adjusting screw 6 and is positioned between the wind-resistant corbel 3 and the adjusting base 8; and the installation distance error between the wind-resistant corbel 3 and the cable-stayed bridge is adjusted through the nut 7. The sliding adjusting units are multiple and distributed on the bottom of the adjusting base 8 in a row. The sliding adjusting unit comprises a spherical groove and a rolling ball 10 arranged in the spherical groove; the spherical groove is arranged on the bottom of the adjusting base 8; the rolling ball 10 is fixed in the spherical groove through a limiting block, and the groove depth of the spherical groove is 1/2-2/3 diameters of the rolling ball 10; the rolling ball 10 drives the wind-resistant bracket 3 to be installed in a sliding mode during construction of the cable-stayed bridge.
The wind-resistant device for the large-span cable-stayed bridge in the construction period further comprises a guide column 9 which is arranged on the adjusting base 8 and penetrates through the wind-resistant bracket 3; the axial direction of the guide posts 9 is parallel to the axial direction of the adjusting screw 6. The number of the guide columns 9 is two, and the guide columns are distributed on two sides of the adjusting screw rod 6.
The invention provides a construction method of a wind resisting device for a large-span cable-stayed bridge in a construction period, which comprises the following steps:
1) when the cable-stayed bridge is constructed, the bridge 1 is placed on a tower column 2, and a cushion block 4 is arranged on the tower column 2; wind-resistant devices are arranged at the joints of the bridge 1 and the tower column 2, and the wind-resistant brackets 3 and the cushion blocks 4 are installed in a sliding contact manner through the adjusting mechanisms; and the wind-resistant brackets 3 at the two ends of the tower column 2 are reinforced through the wind-resistant support 5 at the same side of the bridge 1;
2) the installation distance error between the wind-resistant bracket 3 and the tower column 2 is adjusted through the adjusting mechanism, so that the wind-resistant bracket 3 and the tower column 2 are tightly contacted.
In the invention, the step 1) is realized by slidably installing a wind-resistant bracket 3 at the joint of a tower column 2 and a bridge 1 through a sliding adjusting unit; the step 2) is realized by adjusting the installation distance error of the wind-resistant corbel 3 and the tower column 2 through the error adjusting unit to enable the wind-resistant corbel 3 to be in close contact with the tower column 2.
The concrete realization process of the step 1) is that the rolling balls 10 are utilized to drive the wind-resistant brackets 3 to be arranged on the connecting parts of the tower columns 2 and the bridge 1 in a sliding way on the cushion blocks 4; the concrete realization process of the step 2) is that the adjusting screw 6 and the wind-resistant corbel 3 are driven to move relatively by rotating the nut 7, the distance error between the wind-resistant corbel 3 and the tower column 2 is reduced, and the wind-resistant corbel 3 is in close contact with the tower column 2.
Example 1
Referring to fig. 1, 2 and 3, in the embodiment, the wind-resistant device for the large-span cable-stayed bridge during construction includes a wind-resistant corbel 3 and an adjusting mechanism connected with the wind-resistant corbel 3, and the adjusting mechanism can adjust an installation distance error between the wind-resistant corbel 3 and a tower column 2; when the installation is carried out, the wind-resistant corbel 3 is adjusted to be installed in sliding contact with the tower column 2.
In the embodiment, referring to fig. 1, the wind-resistant corbel 3 is in a wind-resistant corbel shape, and specifically comprises a corbel main body and a cross beam arranged on the corbel main body, wherein the axial direction of the cross beam is perpendicular to the axial direction of the corbel main body; the bracket main body comprises a wedge-shaped block and a support which is arranged below the wedge-shaped block and is fixed with the wedge-shaped block; the right edge of the strut is on the same axis with one right-angle side of the wedge block; and a cross beam vertical to the pillar is arranged on the left edge of the pillar.
In this embodiment, the adjusting mechanism includes an adjusting base 8, an error adjusting unit, and a slide adjusting unit; the error adjusting unit is arranged on the adjusting base 8, and the adjusting base 8 is arranged below the wind-resistant corbel 3 and is connected with the wind-resistant corbel 3 through the error adjusting unit.
In this embodiment, the adjusting base 8 is a rectangular structure, and the adjusting base 8 is disposed below the beam; the adjusting base 8 is connected with the cross beam through an error adjusting unit, so that the adjusting base 8 is connected with the wind-resistant corbel 3; the distance between the wind-resistant bracket 3 and the cable-stayed bridge is eliminated by adjusting the distance between the wind-resistant bracket 3 and the cable-stayed bridge through the error adjusting unit.
Referring to fig. 2 and 3, in the present embodiment, the error adjusting unit includes an adjusting screw 6 and a nut 7 adapted to the adjusting screw 6; one end of the adjusting screw 6 is connected with the adjusting base 8; the other end of the adjusting screw 6 penetrates through a cross beam of the wind-resistant corbel 3; the nut 7 is sleeved on the adjusting screw 6 and is arranged between the cross beam of the wind-resistant corbel 3 and the adjusting base 8; the distance error when the wind-resistant bracket 3 is installed is adjusted and eliminated through the nut 7.
In the present embodiment, the slide adjusting unit includes a spherical groove and a rolling ball 10 placed in the spherical groove; the spherical groove is arranged on the bottom of the adjusting base 8; the rolling ball 10 is matched with the spherical groove, and the rolling ball 10 drives the wind-resistant corbel 3 to be installed in a sliding mode. The sliding adjusting units are arranged on the bottom of the adjusting base 8 in a row.
Referring to fig. 2 and 3, in the present embodiment, there are 16 rolling balls 10; the bottom of the adjusting base 8 is provided with 8 spherical grooves in the transverse direction, 2 spherical grooves in the longitudinal direction are arranged in 2 rows and 8 columns and are uniformly distributed on the bottom of the adjusting base 8; and all of spin 10 arrange in the spherical groove of adjusting base 8, and spin 10 arranges in spherical groove and carries on spacingly to spin 10 for spin 10 can rotate wantonly in spherical groove.
In the embodiment, the outer diameter of the rolling ball 10 is matched with the inner diameter of the spherical groove, the groove depth of the spherical groove is 1/2-2/3 of the diameter of the rolling ball 10, and the rolling ball 10 is fixed in the spherical groove through a limiting ring; the ball 10 can rotate freely in the spherical groove.
In this embodiment, the wind-resistant device of large-span cable-stayed bridge during construction still includes the guide post 9 that is arranged in on adjusting base 8 and passes wind-resistant bracket 3, and the axial of guide post is parallel with adjusting screw 6's axial.
Referring to fig. 1 and 3, in the present embodiment, two guide posts 9 are disposed on two sides of the adjusting screw 6, and one end of each guide post 9 is disposed on the adjusting base 8 and fixed to the upper surface of the adjusting base 8; the other end of the guide rod 9 passes through the beam of the wind-resistant corbel 3.
Example 2
The application of the wind resistance device provided in embodiment 1 of the present invention will be described by taking specific construction as an example.
In a construction project of a large-span cable-stayed bridge, after a pier top section of a main tower pier is erected, a wind-resistant device is arranged at a lower chord node of a steel beam and used for transverse wind-resistant stability and longitudinal temporary locking during erection construction of a large cantilever.
Referring to fig. 4, the specific construction steps are as follows:
1) when the cable-stayed bridge is constructed, the bridge 1 is placed on a tower column 2, and a cushion block 4 is arranged on the tower column 2; wind resisting devices are arranged at the joints of the bridge 1 and the tower columns 2 for resisting wind; the wind-resistant bracket 3 and the cushion block 4 are installed in a sliding contact manner through the adjusting mechanism; and the wind-resistant brackets 3 at the two ends of the tower column 2 are reinforced through the wind-resistant support 5 at the same side of the bridge 1;
furthermore, the wind-resistant corbel 3 is in sliding contact with the tower column 2 through the sliding adjusting unit, so that the installation friction is reduced, and the installation is convenient;
specifically, referring to fig. 4, at four junctions of the bridge 1 and the tower column 2, the right ends of the wind-resistant corbels 3 are all in close contact with the bridge deck of the bridge 1, and the wind-resistant corbels 3 at two ends of the tower column 2 are fixedly connected through the wind-resistant support 5 at the same side of the bridge 1, so that the wind-resistant corbels 3 are reinforced; the wind-resistant brackets 3 are connected with the tower column 2 through the cushion blocks 4; the rolling balls 10 realize the sliding connection of the wind-resistant corbels 3 and the cushion blocks 4; the rolling balls 10 slide on the cushion blocks 4, so that the wind-resistant corbels 3 are driven to slide on the cushion blocks 4, the wind-resistant corbels 3 are in sliding contact with the tower column 2, and static friction force of the wind-resistant corbels 3 during installation is reduced;
2) the installation distance error between the wind-resistant corbel 3 and the tower column 2 is adjusted through the adjusting mechanism, so that the wind-resistant corbel 3 is tightly contacted with the tower column 2, the wind-resistant corbel 3 is firmly installed, and the wind resistance is enhanced;
further, the distance error between the wind-resistant corbel 3 and the tower column 2 is adjusted through the error adjusting unit, the wind-resistant corbel 3 is tightly contacted with the tower column 2, and the wind resistance of the wind-resistant corbel 3 to the tower column 2 and the bridge 1 is enhanced;
specifically, the adjusting screw 6 is driven to move by rotating the nut 7, so that the distance error between the wind-resistant corbel 3 and the tower column 2 is adjusted, and the distance between the wind-resistant corbel 3 and the tower column 2 is tightly contacted; the wind resistance is enhanced.
In this embodiment, the guide post 9 can guarantee that anti-wind bracket 3 keeps steady in accommodation process to the distortion problem when effectively avoiding the installation of anti-wind bracket 3.
In this embodiment, according to the construction situation of reality, drive adjusting screw 6 through rotating nut 7, rotate flexible in adjusting screw 6's axial to adjust the distance between anti-wind bracket 3 and the column 2, eliminate the error that the installation exists between anti-wind bracket 3 and the column 2, thereby effectively solve the error phenomenon that exists after the installation, anti-wind bracket 3 closely firmly with the 2 contacts of column, strengthen anti-wind device's anti-wind ability. In the present embodiment, a preferable manner of adjusting the distance error between the wind-resistant corbel 3 and the tower 2 is given, but the manner of implementing the distance error adjustment is not limited thereto. For example: bolts, etc. other mechanical means of achieving adjustment.
Meanwhile, in the installation process, the traditional wind-resistant bracket is influenced by transverse wind force, and meanwhile, the wind-resistant bracket 3 and the cushion block 4 are subjected to large static friction force when moving relatively, so that the friction force between the wind-resistant bracket 3 and the cushion block 4 is large, and the installation is difficult because the wind-resistant bracket cannot be effectively installed or can move relatively; in the embodiment, the wind-resistant corbel 3 is installed in a sliding manner through the rolling ball 10, so that the dynamic friction generated between the wind-resistant corbel 3 and the tower column 2 is far smaller than the static friction coefficient; therefore, the friction force between the wind-resistant corbel 3 and the tower column 2 in the installation process is reduced, and the installation of the wind-resistant corbel 3 is facilitated.
In this embodiment, two guide posts 9 can keep wind-resistant corbel 3 steady to the wind-resistant device can not take place the distortion phenomenon during the installation.
In this embodiment, after the bridge 1 is placed on the tower column 2, the wind-resistant corbels 3 are arranged in the symmetrical direction of the joint of the bridge and the tower column, the problems of difficult operation and the like of the wind-resistant corbels 3 during installation are solved through the adjusting mechanism, meanwhile, the distance error between the wind-resistant corbels 3 and the tower column 2 is reduced, the close contact is firm, the interference of lateral external stress of the bridge can be reduced, the transverse stress of factors such as wind resistance and the like is reduced, the bridge is subjected to transverse acting forces such as wind resistance and the like, and therefore the bridge is kept in a stable state and does not move or rotate in a twisting manner.
Compared with the prior art, the invention powerfully ensures the wind resistance stability of the bridge steel truss girder in the large cantilever erection construction state, smoothly realizes the main span closure of the steel truss girder, adopts the wind resistance device, reduces the friction force and distortion in the installation process, is tightly and firmly installed, and increases the wind resistance strength; simple operation and low construction cost.
Claims (8)
1. The utility model provides a long-span cable-stay bridge construction period anti-wind device which characterized in that: the wind resisting device in the construction period of the large-span cable-stayed bridge comprises a wind resisting bracket (3) and an adjusting mechanism connected with the wind resisting bracket (3); the adjusting mechanism is used for adjusting the wind-resistant corbel (3) to be installed between the tower column (2) in a sliding manner during the construction of the cable-stayed bridge and adjusting the installation distance error between the wind-resistant corbel (3) and the cable-stayed bridge;
the adjusting mechanism comprises an adjusting base (8), an error adjusting unit and a sliding adjusting unit; the error adjusting unit is arranged on the adjusting base (8), the adjusting base (8) is arranged below the wind-resistant corbel (3) and is connected with the wind-resistant corbel (3) through the error adjusting unit, and the error of the installation distance between the wind-resistant corbel (3) and the cable-stayed bridge is adjusted through the error adjusting unit; the sliding adjusting unit is arranged at the bottom of the adjusting base (8); the wind-resistant bracket (3) is driven to be installed in a sliding manner during the construction of the cable-stayed bridge;
the error adjusting unit comprises an adjusting screw rod (6) and a nut (7) matched with the adjusting screw rod (6); the axial direction of the adjusting screw rod (6) is parallel to the axial direction of the wind-resistant bracket (3); one end of the adjusting screw rod (6) is connected with the adjusting base (8); the other end of the adjusting screw rod (6) penetrates through the wind-resistant bracket (3); the nut (7) is sleeved on the adjusting screw rod (6) and is positioned between the wind-resistant corbel (3) and the adjusting base (8); the installation distance error between the wind-resistant corbel (3) and the cable-stayed bridge is adjusted through the nut (7).
2. The wind-resistant device for the large-span cable-stayed bridge in the construction period according to claim 1, wherein: the sliding adjusting units are distributed on the bottom of the adjusting base (8) in a row.
3. The wind-resistant device for the large-span cable-stayed bridge in the construction period according to claim 2, wherein: the sliding adjusting unit comprises a spherical groove and a rolling ball (10) arranged in the spherical groove; the spherical groove is arranged on the bottom of the adjusting base (8); the rolling ball (10) is fixed in the spherical groove through a limiting block, and the groove depth of the spherical groove is 1/2-2/3 of the diameter of the rolling ball (10); the rolling balls (10) drive the wind-resistant brackets (3) to be installed in a sliding mode during construction of the cable-stayed bridge.
4. The wind-resistant device for the large-span cable-stayed bridge in the construction period according to claim 3, wherein: the wind-resistant device in the construction period of the large-span cable-stayed bridge further comprises a guide column (9) which is arranged on the adjusting base (8) and penetrates through the wind-resistant corbel (3); the axial direction of the guide post (9) is parallel to the axial direction of the adjusting screw rod (6).
5. The wind-resistant device for the large-span cable-stayed bridge in the construction period according to claim 4, wherein: the number of the guide columns (9) is two, and the guide columns are distributed on two sides of the adjusting screw rod (6).
6. A construction method of a wind resisting device for a large-span cable-stayed bridge in a construction period based on any one of claims 1 to 5 is characterized in that: the construction method comprises the following steps:
1) when the cable-stayed bridge is constructed, the bridge (1) is placed on the tower column (2), and the cushion block (4) is arranged on the tower column (2); the wind-resistant device of claim 1 is arranged at the joint of the bridge (1) and the tower column (2), and the wind-resistant bracket (3) and the cushion block (4) are arranged in a sliding contact manner through an adjusting mechanism; and the wind-resistant corbels (3) at the two ends of the tower column (2) are reinforced through wind-resistant supports (5) at the same side of the bridge (1);
2) the installation distance error between the wind-resistant corbel (3) and the tower column (2) is adjusted through the adjusting mechanism, so that the wind-resistant corbel (3) is tightly contacted with the tower column (2).
7. The construction method of the wind resisting device for the large-span cable-stayed bridge in the construction period according to claim 6, wherein:
the step 1) is realized by the way that the wind-resistant corbel (3) is slidably arranged at the joint of the tower column (2) and the bridge (1) through the sliding adjusting unit;
the step 2) is realized by adjusting the installation distance error of the wind-resistant corbel (3) and the tower column (2) through the error adjusting unit, so that the wind-resistant corbel (3) is in close contact with the tower column (2).
8. The construction method of the wind resisting device for the large-span cable-stayed bridge in the construction period according to claim 7, wherein:
the concrete realization process of the step 1) is that the rolling balls (10) are utilized to drive the wind-resistant corbels (3) to be arranged on the connection parts of the tower columns (2) and the bridge (1) in a sliding way on the cushion blocks (4);
the concrete realization process of the step 2) is that the adjusting screw (6) and the wind-resistant bracket (3) are driven to move relatively by rotating the nut (7), so that the distance error between the wind-resistant bracket (3) and the tower column (2) is reduced, and the wind-resistant bracket (3) is in close contact with the tower column (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010399239.6A CN111560852B (en) | 2020-05-12 | 2020-05-12 | Wind resisting device for large-span cable-stayed bridge in construction period and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010399239.6A CN111560852B (en) | 2020-05-12 | 2020-05-12 | Wind resisting device for large-span cable-stayed bridge in construction period and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111560852A CN111560852A (en) | 2020-08-21 |
| CN111560852B true CN111560852B (en) | 2022-03-11 |
Family
ID=72074640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010399239.6A Active CN111560852B (en) | 2020-05-12 | 2020-05-12 | Wind resisting device for large-span cable-stayed bridge in construction period and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111560852B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619162B (en) * | 2012-03-23 | 2014-09-17 | 中铁大桥勘测设计院集团有限公司 | Self-balancing windproof device for large-span bridge |
| KR101704971B1 (en) * | 2016-05-27 | 2017-02-10 | 천진욱 | Support device for leveling-adjustment and displacement recipience and overturning prevention of upper girder and Rahmen bridge using of the same |
| CN107268450B (en) * | 2017-08-09 | 2019-06-07 | 重庆交通大学 | The drag reduction guiding discharge mechanism and pushing method of combined bridge are built for pushing tow |
| CN207685678U (en) * | 2017-11-24 | 2018-08-03 | 江苏中铁山桥重工有限公司 | A kind of big section assembling of bridge is with to spelling formula adjustable wedge block |
| CN108265614A (en) * | 2018-03-15 | 2018-07-10 | 中铁第四勘察设计院集团有限公司 | The bridge tower anchor structure and anchoring process of a kind of cable-stayed bridge |
| CN209162650U (en) * | 2018-11-05 | 2019-07-26 | 中国葛洲坝集团三峡建设工程有限公司 | A kind of adjustable cushion block |
| CN209538041U (en) * | 2018-12-28 | 2019-10-25 | 中交路桥华南工程有限公司 | Support system and its steel corbel component |
| CN209816672U (en) * | 2019-03-19 | 2019-12-20 | 浙江庞源机械工程有限公司 | Attached cantilever bracket structure |
-
2020
- 2020-05-12 CN CN202010399239.6A patent/CN111560852B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111560852A (en) | 2020-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105507127A (en) | Arch rib face internal multi-point restrained and distributed tied-arch bridge | |
| CN111560852B (en) | Wind resisting device for large-span cable-stayed bridge in construction period and construction method | |
| CN113202186A (en) | Steel construction antidetonation frame construction and steel construction assembled earthquake-resistant building | |
| Huang et al. | Experimental study on the seismic performance of traditional Chuan-Dou style wood frames in Southern China | |
| CN211776170U (en) | Inclined structure suitable for indoor ski field | |
| CN115680181B (en) | Material-saving and wind-resistant cable-membrane structure building and construction method thereof | |
| CN109763417B (en) | Cable-stayed steel truss cooperative system bridge | |
| CN217710805U (en) | Pile foundation structure suitable for soft soil layer | |
| CN113062209B (en) | Prestressing force buffering power consumption bridge vibration isolation support | |
| CN208072195U (en) | Bridge expansion joint loading strutting arrangement | |
| CN208235714U (en) | A kind of assembled light steel construction structure | |
| CN109708865B (en) | A test support for column beam node is experimental | |
| CN111576223A (en) | Main tower lower cross beam support pre-pressing device and pre-pressing method thereof | |
| WO2023231073A1 (en) | Combined reinforcing device and method for achieving prestress self-tensioning and secondary regulation and control | |
| CN216615458U (en) | Cushion block device capable of adjusting displacement and inclination angle | |
| CN215498808U (en) | Vertical string solar photovoltaic support | |
| CN215758580U (en) | Bridge pier column deviation correcting device | |
| CN218345973U (en) | Single-column pier capping beam reinforcing structure | |
| CN114232465B (en) | Girder falling prevention device for box girder bridge | |
| CN220035490U (en) | A linking bridge for pier stud and pile foundation | |
| CN114059828B (en) | Stay wire type modularized aluminum alloy rush-repair tower and method for calculating stability of corner aluminum component | |
| CN213081334U (en) | T roof beam inspection pedestal | |
| CN219470691U (en) | Bridge jacking device | |
| CN217399430U (en) | Device is assembled to preloading arch bridge support normal position of exempting from to pile | |
| CN108643249B (en) | Experimental device for researching pile-rock interface failure mechanism and assembling method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |