CN220224904U - Composite space cable structure for improving transverse rigidity of steel truss girder suspension bridge - Google Patents
Composite space cable structure for improving transverse rigidity of steel truss girder suspension bridge Download PDFInfo
- Publication number
- CN220224904U CN220224904U CN202321664745.9U CN202321664745U CN220224904U CN 220224904 U CN220224904 U CN 220224904U CN 202321664745 U CN202321664745 U CN 202321664745U CN 220224904 U CN220224904 U CN 220224904U
- Authority
- CN
- China
- Prior art keywords
- steel truss
- cable
- truss girder
- suspension bridge
- 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
- 239000000725 suspension Substances 0.000 title claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 238000013016 damping Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge, wherein a main suspension cable is arranged on the transverse two sides of the longitudinal two ends of the steel truss girder suspension bridge, extends obliquely downwards and is anchored with the corresponding ground, a plurality of auxiliary suspension cables are also arranged on the main suspension cable, the auxiliary suspension cables are arranged at intervals along the extending direction of the main suspension cable, the other ends of the auxiliary suspension cables are arranged on the steel truss girder suspension bridge, and the auxiliary suspension cables are vertically arranged on the transverse projection surface of the steel truss girder suspension bridge. The beneficial effects of the utility model are as follows: the transverse rigidity of the suspension bridge is improved by the transverse tension of the composite space cable structure formed by the main stay cable and the auxiliary stay cable to the steel truss girder, and meanwhile, the transverse tension and the longitudinal tension caused by the stay cables are self-balanced because the composite space cable structure is symmetrical in the transverse bridge direction and the longitudinal bridge direction, the torsional vibration of the bridge can be reduced by the vertical tension after vector decomposition, and the tension is smaller and finally borne by the main cable.
Description
Technical Field
The utility model relates to a suspension bridge, in particular to a composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge.
Background
In recent years, with rapid development of traffic in complicated terrains such as mountainous areas and straits, the number of bridges with large spans is continuously increasing. Compared with other bridges, the suspension bridge has larger underbridge clearance height and stronger spanning capability, so that the suspension bridge is widely applied. However, the suspension bridge is also relatively low in structural deflection and damping, and is prone to vibration under wind and vehicle loads. Although the wind resistance stability of the steel truss girder suspension bridge is better than that of the steel box girder suspension bridge, the problem of the transverse rigidity of the bridge still limits the extension of the bridge span, influences the driving safety and the comfort, and even threatens the safety of the bridge structure.
The existing researches mostly analyze the bridge structure from the directions of bridge width-to-span ratio, material elastic modulus, density and the like, and discuss the change of the transverse rigidity of the suspension bridge caused by different parameters. However, the influence of the partial mode on the transverse rigidity of the suspension bridge is weak, meanwhile, the structural performance and internal force distribution of the whole bridge are dominant, the possibility of application to actual engineering is low, and the practicability is weak.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge.
The aim of the utility model is achieved by the following technical scheme: a composite space cable structure for improving transverse rigidity of a steel truss girder suspension bridge is characterized in that a main suspension cable is arranged on two transverse sides of two longitudinal ends of the steel truss girder suspension bridge, the main suspension cable extends obliquely downwards and is anchored with corresponding ground, a plurality of auxiliary suspension cables are further arranged on the main suspension cable, the auxiliary suspension cables are arranged at intervals along the extending direction of the main suspension cable, the other ends of the auxiliary suspension cables are arranged on the steel truss girder suspension bridge, and the auxiliary suspension cables are arranged vertically on the transverse projection surface of the steel truss girder suspension bridge.
Optionally, the primary suspension cable and the secondary suspension cable are respectively symmetrical about the steel truss girder suspension cable axle axis.
Optionally, a steel truss girder node plate corresponding to the main stay cable is arranged on the steel truss girder suspension bridge, one end of the main stay cable is anchored with the steel truss girder node plate through an anchor nut, an anchor plate is embedded in the land, an anchor cylinder is welded on the anchor plate, and the main stay cable is embedded at the bottom of the anchor cylinder.
Optionally, one end of the auxiliary stay cable is installed on the main stay cable through a cable clamp, and the other end of the auxiliary stay cable is installed on the steel truss girder gusset plate through an anchor nut.
Optionally, a lower anchor head is embedded at the bottom of the auxiliary stay cable, the lower anchor head is connected with a single ball hinged support, a bearing hole is formed at the bottom of the single ball hinged support, a pin shaft is arranged in the bearing hole in a penetrating manner, an anchor backing plate is arranged on the cable clamp, two lug plates are arranged on the anchor backing plate, and two ends of the pin shaft are respectively hinged to the lug plates.
Optionally, two limbs of the auxiliary stay cable are connected by a vibration damping clamp, and the vibration damping clamp is positioned above the lower anchor head.
The utility model has the following advantages: the transverse rigidity of the suspension bridge is improved by the transverse tension of the composite space cable structure formed by the main stay cable and the auxiliary stay cable to the steel truss girder. Further, the composite space cable structure is symmetrical in the transverse bridge direction and the longitudinal bridge direction, so that the transverse bridge direction tension and the longitudinal bridge direction tension caused by the stay cable are self-balanced, the vertical tension after vector decomposition can reduce torsional vibration of the bridge, and the tension is smaller and finally borne by the main cable. The utility model has simple structure, clear force transmission route and reasonable stress, can effectively improve the transverse rigidity of the steel truss girder suspension bridge, can anchor the composite space cable structure in an assembled mode, can simplify the complexity of construction, and has stronger applicability and practicability.
Drawings
FIG. 1 is a full-bridge southwest isometric view of the present utility model;
FIG. 2 is a schematic illustration of a portion of a bridge including a composite spatial cable structure;
FIG. 3 is a full bridge elevational view of the present utility model;
FIG. 4 is a schematic diagram of a connection structure of a main stay cable and a steel truss girder;
FIG. 5 is a schematic view of the cross-section of A-A of FIG. 4;
FIG. 6 is a schematic view of a main stay cable and ground connection;
FIG. 7 is a schematic diagram of the connection of the secondary stay cables to the steel truss;
FIG. 8 is a schematic view of the structure of section B-B of FIG. 7;
FIG. 9 is a schematic diagram of the connection of the secondary stay cable to the primary stay cable;
FIG. 10 is a schematic view of the structure of FIG. 9C-C in section;
in the figure, the cable comprises a 1-main stay cable, a 4-auxiliary stay cable, a 7-steel truss girder gusset plate, an 8-anchor nut, a 9-anchor plate, a 10-anchor cylinder, an 11-vibration damping clamp, a 12-lower anchor head, a 13-single ball hinged support, a 14-bearing hole, a 15-pin shaft, a 16-lug plate, a 17-anchor backing plate and an 18-cable clamp.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In order to improve the transverse rigidity of the suspension bridge, the purpose can be achieved by adding structural measures. In addition, the transverse displacement of the steel truss girder suspension bridge is mainly the transverse displacement of the truss through numerical simulation analysis, so that the effect of adding structural measures on the steel truss girder is better.
Under the premise of emptying under the bridge, a space cable is additionally arranged to establish a connection between the steel truss girder and the ground in consideration of the influence of factors such as lifting capacity, construction difficulty, economic effect and the like. Meanwhile, in order to effectively improve the transverse rigidity of the steel truss girder suspension bridge, a plurality of groups of auxiliary suspension cables are arranged on the main suspension cables, and more relations are created between the main suspension cables and the steel truss girder so as to achieve a better effect. Therefore, the utility model improves the transverse rigidity of the steel truss girder suspension bridge through the composite space cable structure, and the mode has practicability and effectiveness, and can provide possibility for the advancement of the steel truss girder suspension bridge or other bridge types to the directions of larger span and stronger applicability.
As shown in fig. 1, 2 and 3, a composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge is provided, wherein a main suspension cable 1 is installed on both transverse sides of both longitudinal ends of the steel truss girder suspension bridge, the main suspension cable 1 extends obliquely downwards and is anchored with a corresponding ground, a plurality of auxiliary suspension cables 4 are also installed on the main suspension cable 1, the plurality of auxiliary suspension cables 4 are arranged at intervals along the extending direction of the main suspension cable 1, the other end of each auxiliary suspension cable 4 is installed on the steel truss girder suspension bridge, and the auxiliary suspension cables 4 are vertically arranged on the transverse projection surface of the steel truss girder suspension bridge, so that the transverse rigidity of the suspension bridge can be improved by the transverse tension of the composite space cable structure formed by the main suspension cable 1 and the auxiliary suspension cables 4 on the steel truss girder suspension bridge, and further, the main suspension cable 1 and the auxiliary suspension cables 4 are respectively symmetrical about the steel girder suspension bridge axis, that is, the main suspension cables 1 are symmetrically arranged along the transverse bridge and the longitudinal bridge; the auxiliary stay cables 4 are symmetrically arranged in the transverse bridge direction and the longitudinal bridge direction, so that the transverse bridge direction tension and the longitudinal bridge direction tension caused by the stay cables are self-balanced, the vertical tension after vector decomposition can reduce torsional vibration of the bridge, and the tension is smaller and finally borne by the main cable.
In this embodiment, as shown in fig. 4, 5 and 6, a steel truss node plate 7 corresponding to the main stay cable 1 is disposed on the steel truss suspension bridge, one end of the main stay cable 1 is anchored with the steel truss node plate 7 through an anchor nut 8, an anchor plate 9 is pre-buried on the land, an anchor cylinder 10 is welded on the anchor plate 9, and the main stay cable 1 is embedded at the bottom of the anchor cylinder 10.
In this embodiment, as shown in fig. 7, 8, 9 and 10, one end of the auxiliary stay cable 4 is installed on the main stay cable 1 through a cable clamp 18, the other end of the auxiliary stay cable 4 is installed on the steel truss girder joint plate 7 through an anchor nut 8, further, a lower anchor head 12 is embedded in the bottom of the auxiliary stay cable 4, the lower anchor head 12 is connected with a single ball hinged support 13, a bearing hole 14 is formed in the bottom of the single ball hinged support 13, a pin shaft 15 is penetrated in the bearing hole 14, an anchor pad 17 is installed on the cable clamp 18, two lug plates 16 are arranged on the anchor pad 17, two ends of the pin shaft 15 are respectively hinged on the lug plates 16, two limbs of the auxiliary stay cable 4 are connected through a vibration damping clamp 11, the vibration damping clamp 11 is located above the lower anchor head 12, so that the auxiliary stay cable 4 is connected with the main stay cable 1, vibration of the auxiliary stay cable 4 can be reduced through the vibration damping clamp 11, and the auxiliary stay cable 4 is vertical on a transverse projection surface through the single ball hinged support 13, the pin shaft 15 and the anchor pad 17, so that the auxiliary stay cable 4 is convenient to install the auxiliary stay cable 1 and the auxiliary stay cable 4.
In the embodiment, the bridge structure is modeled by adopting MIDAS software, wherein the main stay cable 1 takes a parallel steel wire cable with the diameter of 0.1922m, the auxiliary stay cable 4 takes a parallel steel wire cable with the diameter of 0.0811m, and on the basis of considering effective utilization of materials, static analysis and wind-vehicle-bridge coupling vibration analysis are carried out on a bridge with composite space cables, so that the anchor point position of the main stay cable 1 is preferably arranged near 1/4 of the main span, the distance between the anchor point position of the ground anchor and the bottom of the tower is preferably the same as the distance between the anchor point position of the main stay cable 1 and the bridge tower, and the transverse displacement can be reduced by 50.38%. Therefore, the composite space cable can limit the transverse displacement of the bridge structure to a large extent, and provides new possibility for the steel truss girder suspension bridge to move to a larger span.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. A promote compound space cable structure of steel truss girder suspension bridge transverse rigidity which characterized in that: the main stay cables extend downwards obliquely and are anchored with corresponding ground, a plurality of auxiliary stay cables are further arranged on the main stay cables, the auxiliary stay cables are arranged at intervals along the extending direction of the main stay cables, the other ends of the auxiliary stay cables are arranged on the steel truss girder suspension bridge, and the auxiliary stay cables are arranged vertically on the transverse projection surface of the steel truss girder suspension bridge.
2. The composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge according to claim 1, wherein: the main stay cable and the auxiliary stay cable are respectively symmetrical about the steel truss girder suspension bridge axis.
3. The composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge according to claim 2, wherein: the steel truss bridge comprises a main stay cable, wherein a steel truss girder node plate corresponding to the main stay cable is arranged on the steel truss girder suspension bridge, one end of the main stay cable is anchored with the steel truss girder node plate through an anchor nut, an anchor pull plate is embedded in the ground, an anchor barrel is welded on the anchor pull plate, and the main stay cable is embedded in the bottom of the anchor barrel.
4. A composite space cable structure for improving the transverse stiffness of a steel truss girder suspension bridge according to claim 3, wherein: one end of the auxiliary stay cable is installed on the main stay cable through a cable clamp, and the other end of the auxiliary stay cable is installed on the steel truss girder gusset plate through an anchor nut.
5. The composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge according to claim 4, wherein: the bottom of the auxiliary stay cable is embedded with a lower anchor head, the lower anchor head is connected with a single ball hinged support, a bearing hole is formed in the bottom of the single ball hinged support, a pin shaft is arranged in the bearing hole in a penetrating mode, an anchor backing plate is mounted on the cable clamp, two lug plates are arranged on the anchor backing plate, and two ends of the pin shaft are respectively hinged to the lug plates.
6. The composite space cable structure for improving the transverse rigidity of a steel truss girder suspension bridge according to claim 5, wherein: the two limbs of the auxiliary stay cable are connected by a vibration damping clamp, and the vibration damping clamp is positioned above the lower anchor head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321664745.9U CN220224904U (en) | 2023-06-28 | 2023-06-28 | Composite space cable structure for improving transverse rigidity of steel truss girder suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321664745.9U CN220224904U (en) | 2023-06-28 | 2023-06-28 | Composite space cable structure for improving transverse rigidity of steel truss girder suspension bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220224904U true CN220224904U (en) | 2023-12-22 |
Family
ID=89185107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321664745.9U Active CN220224904U (en) | 2023-06-28 | 2023-06-28 | Composite space cable structure for improving transverse rigidity of steel truss girder suspension bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220224904U (en) |
-
2023
- 2023-06-28 CN CN202321664745.9U patent/CN220224904U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102296526B (en) | Combination beam-concrete beam mixed cable stayed bridge system | |
| CN103821075B (en) | Long span oblique pull assembly type steel bridge on highway | |
| CN111962372A (en) | Road-rail combined construction steel web member double-combination continuous truss girder and construction method thereof | |
| CN220224904U (en) | Composite space cable structure for improving transverse rigidity of steel truss girder suspension bridge | |
| CN102359060B (en) | Structure of composite beam-concrete beam combined section | |
| CN113235389A (en) | Ground anchor type suspension bridge structure suitable for special terrain | |
| CN206721646U (en) | A kind of cable-stayed type suspension bridge structure suitable for Ultra-Long Spans | |
| CN111119052B (en) | Tower top anchoring device for connecting double main cables of suspension cable pipeline bridge | |
| CN112726377A (en) | Short-tower cable-stayed bridge with flexible beams and dense cables | |
| CN202187283U (en) | Structure of combined beam-concrete beam combined section | |
| Ko et al. | Modal analysis of suspension bridge deck units in erection stage | |
| CN215925647U (en) | Arch rib buckle cable anchoring beam for tower buckle integration | |
| CN205804149U (en) | Bridge rigid pulling force is put | |
| CN111663428B (en) | Negative inhaul cable suspension bridge | |
| CN108824164B (en) | Space three-dimensional cable system ground anchor type suspension bridge bearing wind load of larger transverse bridge | |
| CN211922243U (en) | Pre-assembled steel box girder | |
| CN208501494U (en) | A kind of shared anchorage of suspension bridge | |
| CN215925619U (en) | Vibration damper for bridge widening construction | |
| CN111485480A (en) | Steel box stack arch for multi-line operation | |
| CN112695626A (en) | High pier bridge seismic isolation structure with inhaul cable support | |
| CN205688354U (en) | Continuous beam external prestressing vibration damping pre-embedded device | |
| CN219195625U (en) | Anchor detail structure of stay cable and girder | |
| CN219218648U (en) | Indoor suspension bridge structure | |
| CN217352136U (en) | Cable isolation vibration damper in cable-stayed-suspended cooperation system | |
| CN215857845U (en) | High-speed railway bridge tunnel changeover portion switch roof beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |