CN203213015U - Saddle cable anti-slip structure for middle tower of three-tower suspension bridge - Google Patents
Saddle cable anti-slip structure for middle tower of three-tower suspension bridge Download PDFInfo
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- CN203213015U CN203213015U CN 201320215644 CN201320215644U CN203213015U CN 203213015 U CN203213015 U CN 203213015U CN 201320215644 CN201320215644 CN 201320215644 CN 201320215644 U CN201320215644 U CN 201320215644U CN 203213015 U CN203213015 U CN 203213015U
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Abstract
The utility model relates to the technical field of bridges, in particular to a saddle cable anti-slip structure for a middle tower of a three-tower suspension bridge. The saddle cable anti-slip structure is characterized in that steel supports are symmetrically arranged on the upper portion of a tower body of the middle tower. One end of each steel support is fixedly connected with the tower body of the middle tower while the other end of the same is fixedly with a main cable. The saddle cable anti-slip structure has the advantages that the defects of excessive strict requirements on material performance and tower top dimension in existing suspension bridge saddle cable anti-slip measures are overcome; under the action of imbalanced load, horizontal forces on two sides of the middle tower of the three-tower suspension bridge has a large difference, and the steel support structure has anti-bending and anti-compressing capabilities, and can actively share and reduce imbalanced horizontal forces of the main cable on two sides of a cable saddle, so that anti-slip safety factors are increased; replacement of materials of the main cable and the cable saddle is not needed, and the structural dimension of the cable saddle or a tower top does not need to be increased, so that the saddle cable anti-slip structure is safe and economical.
Description
Technical field
The utility model relates to the bridge technology field, is specifically related to a kind of saddle cable anti-skid structure for three tower suspension bridge towers.
Background technology
Suspension bridge enjoys favor because of its distinguished span ability in the long span bridge beam, along with the increase of span, the double tower suspension bridge need be built huge anchorage, thereby has reduced economic performance.In area, China middle and lower reach of Yangtze River, the soft covering bed thickness of soil property basement rock buried depth is big, the too high bottleneck that has become the development of restriction suspension bridge of anchorage expense, three tower suspension bridges are compared big single span suspension bridge can significantly reduce tension of main cable and anchorage scale, therefore when the span centre depth of water is little, three tower suspension bridges will become strong contention scheme.
The middle tower structure form of three tower suspension bridges is one of key issues of design, middle tower structure can be divided into flexible and rigidity two classes, stride one when the vehicle mobile load and to be abound with and when another strides zero load, tower can make the cat head displacement excessive in the employing flexibility, thereby cause suspension bridge integral rigidity deficiency, middle tower often is designed to rigid tower for this reason.Yet tower will bear the uneven horizontal force of great main push-towing rope in the rigidity under above-mentioned unbalance loading operating mode, and the non-skid property of middle cat head place's main push-towing rope and cable saddle just becomes a key issue of control design.In order to improve saddle cable non-skid property, existing method has the coefficient of friction resistance that increases main push-towing rope and cable saddle material, increases measures such as cable saddle tangential dimension, vertical pressurization, these all belong to " the passive measure " that improves antiskid frictional force, material property, cat head size etc. are required comparatively strictness, be difficult to sometimes use.Therefore those skilled in the art is badly in need of a kind of novel saddle cable anti-skid structure for three tower suspension bridge towers.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, a kind of saddle cable anti-skid structure for three tower suspension bridge towers is provided, this saddle cable anti-skid structure is by arranging the steel support with symmetric position in the end on one's body at middle Tata, fixedly connected with middle Tata body with main push-towing rope respectively in the two ends that each steel supports, with the saddle cable non-skid property of column overhead in improving.
The utility model purpose realizes being finished by following technical scheme:
A kind of saddle cable anti-skid structure for three tower suspension bridge towers, tower and main push-towing rope in relating to, it is characterized in that described middle Tata is provided with the steel support with symmetric position in the end on one's body, the end that wherein said steel supports is fixedlyed connected with described middle Tata body, and its other end is fixedlyed connected with described main push-towing rope.
Angle between described steel support and the described main push-towing rope axis direction is 30 °～60 °.
Described steel is supported for real abdomen formula structure, also can be truss structure.
The utility model has the advantages that, overcome in the existing suspension bridge saddle cable non-skid feature the too strict shortcoming of material property, cat head dimensional requirement; Under the unsymmetrical load effect, there is larger difference in the both sides horizontal force of tower in the three tower suspension bridge rigidity, and steel support structure possesses bending resistance and anti-pressure ability simultaneously, can share " initiatively " and reduce main push-towing rope at the uneven horizontal force of cable saddle both sides, thereby improves antiskiding factor; This saddle cable shoe does not need to change the material of main push-towing rope and cable saddle, does not need to increase the physical dimension of cable saddle or cat head, has safe, economic advantage.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Feature of the present utility model and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
As Fig. 1, mark 1-6 is respectively among the figure: main push-towing rope 1, steel support 2, middle tower 3, fixed connection structure 4, fixed connection structure 5, cable saddle 6;
α is that main push-towing rope 1 and steel support the angle between 2, namely steel support 2 respectively and two anchoring point lines on middle tower 3 and the main push-towing rope 1 with the angle between main push-towing rope 1 axis.
Embodiment: as shown in Figure 1, present embodiment is specifically related to a kind of saddle cable anti-skid structure for three tower suspension bridge towers, and tower is tower 3 in the rigidity in this, is provided with cable saddle 6 at the cat head place of middle tower 3, and main push-towing rope 1 is through cable saddle 6 one the striding to wear to another and stride of tower 3 therefrom; Saddle cable non-skid property for the 3 cat head places of tower in improving, be symmetrical arranged steel in middle tower 3 bodies of the tower upper end and arranged on left and right sides and support 2, steel supports 2 the two ends fixedly connected main push-towing rope 1 of difference and middle tower 3 bodies of the tower, steel supports 2 can adopt real abdomen formula or truss structure, between desirable 30 °～60 ° of the angle α between itself and the main push-towing rope 1.
Wherein the lower end of steel support 2 and the fixed connection structure 4 at middle tower 3 cat head places are specially: the both sides, body of the tower upper end at middle tower 3 are embedded with steel plate, and the steel of middle tower 3 both sides supports 2 lower ends and this steel plate welds or bolt, to reach closely fixedly connected purpose.
Wherein the upper end of steel support 2 and the fixed connection structure 5 at main push-towing rope 1 place are specially: be arranged with a hood type cord clip at main push-towing rope 1, the anchoring point junction of this hood type cord clip between steel support 2 and main push-towing rope 1, and steel supports 2 upper end and the welding of this hood type cord clip or bolt, to reach closely fixedly connected purpose.
As shown in Figure 1, the main span of suspension bridge is 2 * 1080m in the present embodiment, and the angle α between steel support 2 and the main push-towing rope 1 gets 60 °, and the reasonable section of steel support 2 amasss and bending rigidity only is 0.1 m
2With 0.25 m
4When unsymmetrical load after tower 3 both sides produce uneven horizontal force in three tower suspension bridge rigidity, steel supports 2 can be by the resistance to compression bending resistance of self, shares and reduces main push-towing rope 1 in the uneven horizontal force of cable saddle 6 both sides, the risk that reduces to slide; Steel support 2 structure be connected in the cat head both sides of tower 3, do not need to take cat head end face space, and self size is also less, obviously have more safety, economic advantage than prior art.
Claims (3)
1. saddle cable anti-skid structure that is used for three tower suspension bridge towers, tower and main push-towing rope in relating to, it is characterized in that described middle Tata is provided with the steel support with symmetric position in the end on one's body, the end that wherein said steel supports is fixedlyed connected with described middle Tata body, and its other end is fixedlyed connected with described main push-towing rope.
2. a kind of saddle cable anti-skid structure for three tower suspension bridge towers according to claim 1 is characterized in that the angle between described steel support and the described main push-towing rope axis direction is 30 °～60 °.
3. a kind of saddle cable anti-skid structure for three tower suspension bridge towers according to claim 1 is characterized in that described steel is supported for real abdomen formula structure, also can be truss structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320215644 CN203213015U (en) | 2013-04-25 | 2013-04-25 | Saddle cable anti-slip structure for middle tower of three-tower suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320215644 CN203213015U (en) | 2013-04-25 | 2013-04-25 | Saddle cable anti-slip structure for middle tower of three-tower suspension bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203213015U true CN203213015U (en) | 2013-09-25 |
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ID=49202564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320215644 Expired - Fee Related CN203213015U (en) | 2013-04-25 | 2013-04-25 | Saddle cable anti-slip structure for middle tower of three-tower suspension bridge |
Country Status (1)
| Country | Link |
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| CN (1) | CN203213015U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906744A (en) * | 2017-03-02 | 2017-06-30 | 西南交通大学 | A kind of critical packaged type main cable saddle for main push-towing rope antiskid |
| CN109629402A (en) * | 2019-01-15 | 2019-04-16 | 四川路桥华东建设有限责任公司 | A kind of construction method of three tower four across girder of suspension bridge |
| CN114606858A (en) * | 2022-03-11 | 2022-06-10 | 四川君河建设工程有限公司 | Main cable saddle for middle tower of small and medium-sized suspension bridge |
-
2013
- 2013-04-25 CN CN 201320215644 patent/CN203213015U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906744A (en) * | 2017-03-02 | 2017-06-30 | 西南交通大学 | A kind of critical packaged type main cable saddle for main push-towing rope antiskid |
| CN106906744B (en) * | 2017-03-02 | 2018-07-31 | 西南交通大学 | A kind of critical packaged type main cable saddle for main push-towing rope antiskid |
| CN109629402A (en) * | 2019-01-15 | 2019-04-16 | 四川路桥华东建设有限责任公司 | A kind of construction method of three tower four across girder of suspension bridge |
| CN109629402B (en) * | 2019-01-15 | 2021-04-13 | 四川路桥华东建设有限责任公司 | Construction method of three-tower four-span suspension bridge girder |
| CN114606858A (en) * | 2022-03-11 | 2022-06-10 | 四川君河建设工程有限公司 | Main cable saddle for middle tower of small and medium-sized suspension bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20210425 |