CN216129957U - Wind-resistant device for increasing construction stability of suspension arm of cable-stayed bridge - Google Patents
Wind-resistant device for increasing construction stability of suspension arm of cable-stayed bridge Download PDFInfo
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Abstract
The utility model discloses a wind-resistant device for increasing the construction stability of a cable-stayed bridge cantilever, which comprises a rope and a damping device, wherein the upper end of the rope is connected with a hanging basket, the lower end of the rope is connected with the damping device, and the damping device is suspended in water by virtue of the buoyancy of the damping device and the pulling force provided by the rope; when the wind-induced vibration occurs to the beam body of the cable-stayed bridge, the hanging basket installed on the beam body drives the damping device to move in water through the rope, the damping device receives the resistance of water to the damping device in water, the direction of the resistance is opposite to the moving direction of the damping device, the damping device reciprocates up and down to overcome the resistance of the water to do work, and therefore the energy of the vibration of the beam body is dissipated, and the beam body is restored to a static state from a moving state. This anti-wind device of cable-stay bridge increases the structural damping, and the energy that the structure vibration in time consumed produces eliminates the vibration of cable-stay bridge at the sprouting stage, guarantees stability and security in the bridge work progress.
Description
Technical Field
The utility model belongs to the technical field of cable-stayed bridges, and particularly relates to a wind-resistant device for improving the construction stability of a cantilever of a cable-stayed bridge.
Background
The cable-stayed bridge structure system has wide selection range and prominent mechanical characteristics and aesthetic effects, is one of main bridge types with larger crossing capability, and has strong competitiveness when crossing straits, valleys, lakes and rivers. Among the large span bridges, cable-stayed bridges have become the main bridge type. Along with the increase of the span of the cable-stayed bridge, the rigidity and the stability of the structure are reduced, and meanwhile, the bridge construction period is also prolonged. The large-span cable-stayed bridge generally adopts cantilever construction, and before a main beam is closed, the cable-stayed bridge in a cantilever state has the conditions of weak structural rigidity, large wind-induced vibration response, poor stability and the like. Therefore, the method has very important practical engineering significance for large-span bridges, improving the structural stability and preventing the wind load and the structural vibration caused by other load forms in the construction of cable-stayed bridges.
The main girder of the large-span cable-stayed bridge is low in structural damping and relatively poor in stability in the cantilever construction stage, the structure is sensitive to wind load, vibration is easily generated under the wind load effect, large internal force is caused, and the safety problems of construction machinery and the structure are caused. During the construction of the main beam cantilever, the wind vibration response is mainly expressed as 'beam body lateral bending' and 'integral vertical swinging' vibration under the action of wind load, huge overturning moment or horizontal torque is generated on the tower beam, and the huge overturning moment or horizontal torque is superposed with other construction loads to cause the damage of the tower beam structure. At the same time, the safety of the constructors and machines during construction is compromised. Therefore, as a cable-stayed bridge is used as a large space flexible structure, the improvement of the stability of the structure and the reduction of the risk of vibration under the action of wind and other loads become important problems during construction.
Aiming at the vibration problem possibly existing in the construction of the cable-stayed bridge caused by wind load and other load, the existing scheme for relieving the structural vibration has fewer measures. Adopt pier side bracket or the interim mound of anti-wind, not only the construction is comparatively complicated, and the cost is higher, and difficult implementation in aqueous. Application number "201210080686.0" utility model patent "self-balancing anti-wind device of large-span bridge", the device can turn into this scheme between the tower beam with the lateral wind load external force and act on limitedly to the stable problem during the girder cantilever construction, and in longer construction cycle, the structure receives the excitation effect of load to change great, and the suitability of this scheme etc. remains to improve. With the ever-increasing popularity of cable-stayed bridges, the problem of wind stability during construction requires more solutions.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a wind resisting device for improving the construction stability of a cable-stayed bridge cantilever. This anti-wind device of cable-stay bridge increases the structural damping, and the energy that the structure vibration in time consumed produces eliminates the vibration of cable-stay bridge at the sprouting stage, guarantees stability and security in the bridge work progress.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides an anti-wind device for increasing cable-stay bridge cantilever construction stability which characterized in that: the suspension device comprises a rope and a damping device, wherein the upper end of the rope is connected with a suspension basket for cantilever construction of a beam body of a cable-stayed bridge, the lower end of the rope is connected with the damping device, and the damping device is suspended in water by virtue of buoyancy of the damping device and tension provided by the rope;
when the wind-induced vibration occurs to the beam body of the cable-stayed bridge, the hanging basket mounted on the beam body drives the damping device to move in water through the rope, the damping device receives resistance of water to the damping device in water, the direction of the resistance is opposite to the movement direction of the damping device, the damping device reciprocates up and down to overcome the resistance of the water to do work, and therefore the energy of the vibration of the beam body is dissipated, and the beam body is restored to a static state from a movement state.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: the ropes are arranged vertically.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: the rope is under tension.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: the damping device at least comprises a buoyancy unit, the self gravity of the buoyancy unit is larger than the buoyancy of the buoyancy unit, and the part of the self gravity exceeding the buoyancy is borne by the rope.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: the buoyancy unit comprises a buoyancy cylinder which is vertically arranged, the upper end and the lower end of the buoyancy cylinder are closed ends, a cavity is formed inside the buoyancy cylinder, a filling body is arranged at the bottom of the cavity, and a buoyancy cavity is formed in the cavity and located above the filling body.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: the buoyancy barrel is provided with a plurality of peripheral plates, and the peripheral plates are arranged at intervals along the length direction of the buoyancy barrel.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: the upper end of the buoyancy cylinder forms a measuring platform for arranging a measuring device and a warning signal lamp.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: and an anchoring point used for being connected with the rope is arranged on the measuring platform.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: and the rope is provided with a contour indicating device for warning the position of the rope and the position of the damping device.
The wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever is characterized in that: the outline showing device is a plurality of warning signal lamps arranged at intervals along the length direction of the rope or a reflective coating coated on the outer portion of the rope.
The utility model also provides a construction method of the wind-resistant device for improving the construction stability of the cable-stayed bridge cantilever, which comprises the following steps:
before cantilever construction of a main beam of a cable-stayed bridge, selecting sectional materials and sizes of a buoyancy cylinder, a peripheral plate and a filler according to actual conditions of each construction stage of the main beam and the perennial climate condition of a construction site, and further calculating the sizes of the buoyancy cylinder and the peripheral plate and the weight of the filler required by each construction stage according to the following formula;
G1+G2+G3-Ft≥Ffloating body
G1＝π(R2-r2)tρ1g
G2＝πr2hρ2
FFloating body＝π(R2-r2)tρWater (W)g+πr2hρWater (W)
In the above formula: g1Is the weight of the peripheral plate; g2Is the gravity of the buoyancy cylinder; g3Is the weight of the filling body; r is the outer diameter of the buoyancy barrel; r is the outer diameter of the external peripheral plate; rho1Is the density of the peripheral board; rho2Is the density of the buoyancy tube; rhoWater (W)Is the density of water;
step two, according to the construction progress, carry on the fabrication installation work of the damping device 2 in good time:
the damping device can be manufactured in a factory prefabrication or field welding processing mode, and construction difficulty is low. Because the weight of the damping device is limited, the field installation and debugging work is efficiently and quickly carried out in a hoisting mode, the damping device is connected below the hanging basket through a rope, the damping device is slowly hoisted into water, and the rope is ensured to be in a vertical state;
step three, when the damping device is in a state of self gravity and buoyancy balance, according to the earlier-stage calculation content, aiming at different design values of each construction stage, adjusting the balance weight of the filling body, and according to the actual requirement, selecting a proper amount of water, gravel and other substances so as to meet the following formula:
G1+G2-Ft≥2Ffloating body
And in different construction stages, the damping device is moved along with the movement of the hanging basket, and meanwhile, the quality of the filling body is adjusted according to the design value of each stage, so that the working performance of the damping device is ensured.
Compared with the prior art, the utility model has the beneficial technical effects that:
1. when the beam body does not vibrate, the damping device only transmits a part of force (the difference between the self gravity of the damping device and the received buoyancy) to the hanging basket through the rope, and because the weight of the damping device is taken into the self weight of the hanging basket during early calculation, the damping device has no influence on the construction load of the structure.
2. In the construction process of a suspension arm of a cable-stayed bridge, the damping device changes position along with the construction of a beam section along with a hanging basket and is always positioned near the end part of the suspension arm of a main beam, and the position is the position with the maximum structural response when wind vibration occurs, so that the damping device can better exert the vibration damping effect.
3. When the bridge vibrates, the resistance of the damping device to water is in positive correlation with the vibration strength, and the larger the bridge amplitude is, the larger the resistance of the damping device is, and the stronger the vibration reduction effect is.
4. The number of the filling bodies and the peripheral plates in the damping device can be arranged as desired. The peripheral plate increases the vertical contact area with water, and effectively increases the resistance of the device. Meanwhile, the peripheral plate increases the structural rigidity of the buoyancy barrel and ensures the structural rigidity of the damping device.
5. The measurement device is facilitated by arranging the measurement platform, and the damping device 2 can be diversified in functionality by installing the measurement device, so that the device is low in apportionment cost. Meanwhile, the measuring device can realize the real-time monitoring of data such as hydrology, meteorology and device running state, and the guiding and warning functions on the running of the navigation channel.
6. The warning light or the reflective coating of the outline displaying unit can make the arrangement position of the damping device more striking, ensure the safety of the damping device and increase the aesthetic degree of the damping device.
7. The damping device can customize the section size and the mass according to the actual demand, so that the structural damping is effectively increased, the risk of bridge vibration is reduced, and the device cost is effectively saved.
8. The damping device can resist wind vibration, and can also play a vibration damping effect on structural vibration caused by other loads due to the structural damping increased by the structure.
9. The damping device can adjust the quality of the filling body according to the stability requirements of different construction stages, and the real-time adjustment of the working effect of the damping device is realized. Simultaneously, damping device can lay in different positions, and the device is made the degree of difficulty little moreover, the installation is dismantled extremely convenient and fast, has characteristics such as portable, convenient and function diversification, has extremely strong adaptability.
10. The construction method is efficient and rapid, and related device parameters and the construction method can be flexibly adjusted according to actual engineering requirements, so that the engineering applicability of the device is stronger.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive efforts.
Fig. 1 is a schematic view of the cable-stayed bridge according to the present invention in use.
Fig. 2 is a schematic view of the present invention in use suspended in water.
Fig. 3 is a sectional view a-a in fig. 2.
Fig. 4 is a schematic structural view of the buoyancy tube of the present invention.
Fig. 5 is a schematic view of the connection of the profile device and the rope according to the present invention.
Description of reference numerals:
1-a rope; 2-a damping device; 2 a-a buoyancy cylinder;
2 b-a filler; 2 c-buoyancy chamber; 2 d-peripheral plate;
2 e-a measurement platform; 2 f-anchor point; 3-a beam body;
4, hanging a basket; 5-cable tower; 6, stay cables;
7-outline device; 7 a-warning light.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.
As shown in fig. 1 and 2, the wind-resistant apparatus for increasing the stability of the construction of the cantilever of the cable-stayed bridge is mainly composed of a cable tower 5, a stay cable 6 and a girder 3, and can be used in the construction of the cantilever of the cable-stayed bridge spanning water areas such as straits, valleys and lakes.
Specifically, the wind-resistant device includes a rope 1 and a damping device 2.
The upper end of the rope 1 is connected with a hanging basket 4 of a cable-stayed bridge body 3 in cantilever construction, the lower end of the rope 1 is connected with a damping device 2, and the damping device 2 is suspended in water by virtue of the buoyancy of the damping device and the pulling force provided by the rope 1; specifically, the ropes 1 and the damping devices 2 form a group in a one-to-one correspondence manner, multiple groups are arranged at intervals in the extending direction of the beam body 3 of the cable-stayed bridge (namely, the length direction of the beam body 3), and the groups are arranged on the hanging basket 4 close to two opposite edges of the beam body 3 in the length direction, namely, the wind resistance devices are symmetrical about the length direction of the beam body 3.
The rope 1 is vertically arranged, namely the rope 1 is vertically downwards from the cradle 4, and the rope 1, the damping device 2 and the joint of the rope 1 and the cradle 4 are positioned on the same vertical straight line. The reason for this is that, when the rope 1 is obliquely arranged, the obliquely arranged rope 1 is stretched and tensioned under the action of water flow, at this time, the rope 1 has a horizontal component force to the cradle 4, and the component force is transmitted to the constructed beam body 3 by the cradle 4 and further harms the beam body 3, so that the rope 1 and the damping device 2, and the joints of the rope 1 and the cradle 4 are arranged on the same vertical straight line, and the component force can be reduced or avoided.
Meanwhile, the rope 1 is in a tensioning state, the damping device 2 can be ensured to be in a working state at any time by utilizing the rope 1 in the tensioning state, and the wind-proof device of the cable-stayed bridge can be ensured to be in a state of restraining and offsetting wind-induced vibration of the beam body 3 all day long.
Rope 1 may be wire rope, steel strand, or other rope having a strength up to standard, and this application is not limited thereto.
The damping device 2 is suspended in the water, depending on its own buoyancy and the tension provided by the rope 1.
When the wind-induced vibration takes place for the roof beam body 3 of cable-stay bridge, the basket 4 of hanging of installing on the roof beam body 3 drives damping device 2 through rope 1 and moves in aqueous, and damping device 2 receives the resistance of water to it in aqueous, the direction of resistance is opposite with damping device 2's direction of motion, the resistance transmits to hanging basket 4 through the rope 1 that suspends damping device 2 in midair to play the inhibitory action to the vertical vibration of the roof beam body 3. The damping device 2 reciprocates up and down to overcome the resistance of water to do work, so that the energy of the vibration of the beam body is dissipated, and the beam body 3 is restored to a static state from a motion state. This damping device 2 has increased structural damping in fact, can greatly reduced structure wind risk of shaking, effectively increases the stability of cable-stay bridge cantilever construction.
The damping device 2 at least comprises a buoyancy unit, the self gravity of the buoyancy unit is larger than the buoyancy of the buoyancy unit, and the part of the self gravity exceeding the buoyancy is borne by the rope 1.
As shown in fig. 2, 3 and 4, the buoyancy unit includes a buoyancy cylinder 2a, the buoyancy cylinder 2a is vertically arranged, both the upper end and the lower end of the buoyancy cylinder 2a are closed ends, the inside of the buoyancy cylinder 2a is a cavity, a filling body 2b is arranged at the bottom of the cavity, and a buoyancy chamber 2c is formed in the cavity and above the filling body 2 b.
Through setting up obturator 2b, on the one hand can increase the dead weight of buoyancy unit makes buoyancy unit's dead weight be greater than its buoyancy, and on the other hand, obturator 2b has still played the stabilizing action to a buoyancy section of thick bamboo 2a, ensures that a buoyancy section of thick bamboo 2a is in vertical state.
Preferably, the buoyancy tube 2a is provided with a plurality of peripheral plates 2d, and the peripheral plates 2d are arranged at intervals along the length direction of the buoyancy tube 2 a. Wherein, buoyancy section of thick bamboo 2a and peripheral plate 2d all adopt the steel sheet to make, according to the service environment of this anti-wind device, can adopt the steel sheet of different thickness. The peripheral plate 2d adopts circular cross section, and the external diameter of buoyancy section of thick bamboo 2a is selected to peripheral plate 2d internal diameter size, and a plurality of peripheral plate 2d equidistant welded fastening in the outside of buoyancy section of thick bamboo 2 a. The peripheral plate 2d functions to increase the contact area of the wind resistance device with water, and to increase the buoyancy of the entire damper device 2. Meanwhile, the peripheral plate 2d can also increase the structural rigidity of the buoyancy unit, reduce the deformation of the buoyancy unit under the action of the resistance of water and improve the stress of the buoyancy unit.
Specifically, the number of the packing bodies 2b and the peripheral plates 2d in the damper device 2 may be set as desired. The peripheral plate 2d increases the vertical contact area with water, effectively damping the resistance of the device 2. Meanwhile, the peripheral plate 2d increases the structural rigidity of the buoyancy barrel 2a, and the structural rigidity of the damping device 2 is ensured.
Further, the damping device 2 is suspended in water by means of self buoyancy and the tensile force of the rope 1, the self weight of the damping device 2 is slightly larger than the buoyancy by controlling the volumes of the buoyancy barrel 2a and the peripheral plate 2d and the weight of the filling body 2b, and the part of the weight exceeding the buoyancy is borne by the rope 1, so that the rope 1 suspending the damping device 2 is ensured to be in a tensioning state, and meanwhile, the existence of the buoyancy cannot cause the weight of the damping device 2 to have excessive influence on temporary construction load. The working performance of the damping device 2 at different construction stages is ensured by adjusting the weight of the filling body 2 b. The dead weight of the damping device 2 is incorporated into the load of the hanging basket 4 during the calculation of the temporary load in the early construction, so that the damping device 2 has no influence on the construction load of the structure, and the influence on the stress of the structure can be ignored. Meanwhile, according to the requirements of the construction stage, the position and the weight of the damping device 2 can be changed, and the stability requirements of each stage are met.
In this embodiment, when the damping device 2 is free from wind vibration, only a part of the force (the difference between the gravity of the damping device 2 and the buoyancy received by the damping device) is transmitted to the cradle 4 through the rope 1, and then transmitted to the beam body 3, and due to the existence of the buoyancy, the beam body 3 and the cradle 4 are hardly affected. When wind vibration occurs, the resistance of the water received by the damping device 2 is in positive correlation with the vibration strength, and the larger the amplitude is, the larger the resistance received by the damping device 2 is, and the stronger the vibration reduction effect is. The filler 2b can hold the damping device 2 in a vertical position, and the rope 1 suspending the damping device 2 is held vertically. This damping device 2 can be along 2 longitudinal arrangement of roof beam body a plurality ofly, and increase structural damping effectively reduces the risk of wind vibration.
In this embodiment, the upper end of the buoyancy cylinder 2a constitutes a measurement platform 2e for arranging a measurement device and a warning signal lamp. By providing the measuring device on the measuring platform 2e, the functionality of the damping device 2 can be diversified under the effect of the measuring device, making the device apportioned cost less. Meanwhile, the measuring device can realize the real-time monitoring of data such as hydrology, meteorology and device running state, and has the functions of guiding and warning the running of a navigation channel.
In this embodiment, the measuring platform 2e is provided with an anchoring point 2f for connecting with the rope 1, so that the connection between the rope 1 and the damping device 2 is effectively realized.
As shown in fig. 5, the rope 1 is provided with a contour indicator 7, and the contour indicator 7 is used for warning the position of the rope 1 and the position of the damper 2, so that an effective warning effect is achieved, and the safety of a navigation channel in a working plane is ensured.
Preferably, the outline marker 7 is a plurality of warning lights 7a arranged at intervals along the length direction of the rope 1 or a reflective coating coated on the rope 1. Therefore, the arrangement position of the damping device 2 can be more striking, the safety of the damping device is guaranteed, and meanwhile the aesthetic degree of the wind-resistant device is increased.
According to the content and the thought of the damping device, the design and calculation content related to the utility model patent is organized, and the whole thought of the damping device is as follows:
G1+G2+G3-Ft≥Ffloating body (1)
G1＝π(R2-r2)tρ1g (2)
G2＝πr2hρ2 (3)
FFloating body＝π(R2-r2)tρWater (W)g+πr2hρWater (W) (4)
In the above formulas (1), (2), (3) and (4): g1Is the weight of the peripheral plate; g2Is the gravity of the buoyancy cylinder; g3Is the weight of the filling body;
Ftis the tension of the rope; fFloating bodyBuoyancy of the water flow to the device;
r is the outer diameter of the buoyancy barrel; r is the outer diameter of the external peripheral plate;
ρ1is the density of the peripheral board;
ρ2is the density of the buoyancy tube;
ρwater (W)Is the density of water;
in the early-stage calculation design of the damping device, in order to ensure the working performance of the device and the application range of the device, the following formula is required to be satisfied during the design:
G1+G2-Ft≥2Ffloating body
According to different construction stages, the G is adjusted by combining the relevant stability requirements of each stage3The value of (2) ensures that the damping device adjusts the quality of the filling body in real time according to different construction stages, and furthest exerts the potential of the device.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides an anti-wind device for increasing cable-stay bridge cantilever construction stability which characterized in that: including rope (1) and damping device (2), the upper end of rope (1) is connected with hanging basket (4) of cable-stay bridge girder body (3) cantilever construction, the lower extreme of rope (1) with damping device (2) are connected, damping device (2) rely on self buoyancy with the pulling force that rope (1) provided suspends in aqueous.
2. The wind-resistant device for improving the construction stability of the suspension arm of the cable-stayed bridge according to claim 1, wherein: the rope (1) is vertically arranged.
3. The wind-resistant device for improving the construction stability of the suspension arm of the cable-stayed bridge according to claim 1, wherein: the rope (1) is under tension.
4. The wind-resistant device for improving the construction stability of the suspension arm of the cable-stayed bridge according to claim 1, wherein: the damping device (2) at least comprises a buoyancy unit, the self gravity of the buoyancy unit is larger than the buoyancy of the buoyancy unit, and the part of the self gravity exceeding the buoyancy is borne by the rope (1).
5. The wind resisting device for improving the construction stability of the suspension arm of the cable-stayed bridge according to the claim 4, characterized in that: the buoyancy unit comprises a buoyancy cylinder (2a) which is vertically arranged, the upper end and the lower end of the buoyancy cylinder (2a) are closed ends, a cavity is formed inside the buoyancy cylinder (2a), a filling body (2b) is arranged at the bottom of the cavity, and a buoyancy cavity (2c) is formed in the cavity and located above the filling body (2 b).
6. The wind resisting device for improving the construction stability of the suspension arm of the cable-stayed bridge according to claim 5, wherein: the buoyancy barrel (2a) is provided with a plurality of peripheral plates (2d), and the peripheral plates (2d) are arranged at intervals along the length direction of the buoyancy barrel (2 a).
7. The wind resisting device for improving the construction stability of the suspension arm of the cable-stayed bridge according to claim 5, wherein: the upper end of the buoyancy cylinder (2a) forms a measuring platform (2e) for arranging a measuring device and a warning signal lamp; and an anchoring point (2f) used for being connected with the rope (1) is arranged on the measuring platform (2 e).
8. The wind-resistant device for improving the construction stability of the suspension arm of the cable-stayed bridge according to claim 1, wherein: the rope (1) is provided with a contour indicating device (7) for warning the position of the rope (1) and the position of the damping device (2).
9. The wind resisting device for improving the construction stability of the suspension arm of the cable-stayed bridge according to claim 8, wherein: the outline marker (7) is a plurality of warning signal lamps (7a) arranged along the length direction of the rope (1) at intervals or a reflective coating coated on the rope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120247421.XU CN216129957U (en) | 2021-01-28 | 2021-01-28 | Wind-resistant device for increasing construction stability of suspension arm of cable-stayed bridge |
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| CN202120247421.XU CN216129957U (en) | 2021-01-28 | 2021-01-28 | Wind-resistant device for increasing construction stability of suspension arm of cable-stayed bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832115A (en) * | 2021-01-28 | 2021-05-25 | 中铁十五局集团第一工程有限公司 | Wind-resistant device and construction method for increasing the stability of cantilever construction of cable-stayed bridge |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832115A (en) * | 2021-01-28 | 2021-05-25 | 中铁十五局集团第一工程有限公司 | Wind-resistant device and construction method for increasing the stability of cantilever construction of cable-stayed bridge |
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