CN103061244B - Combination line-shaped bearing cable suspension bridge and construction method thereof - Google Patents
Combination line-shaped bearing cable suspension bridge and construction method thereof Download PDFInfo
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- CN103061244B CN103061244B CN201110318498.2A CN201110318498A CN103061244B CN 103061244 B CN103061244 B CN 103061244B CN 201110318498 A CN201110318498 A CN 201110318498A CN 103061244 B CN103061244 B CN 103061244B
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Abstract
The invention relates to a combination line-shaped bearing cable suspension bridge which is formed by a carriageway beam, a bridge tower, an anchoring, a bearing cable, and suspender cables. The bearing cable is formed by two main cables. A main cable displacement pulling rod of the two main cables is arranged between the bridge tower and an anchoring point. The main cables between the bridge tower and the displacement pulling rod are parallel to each other. The main cables between the displacement pulling rod and the anchoring point are in curve shapes at different intervals. The suspender cables are connected at two sides of the main cables and stiff girders at different skew angles. A main cable plane locating process exists in a construction method of the combination line-shaped bearing cable suspension bridge. According to the combination line-shaped bearing cable suspension bridge and the construction method of the combination line-shaped bearing cable suspension bridge, a dip angle of the suspender cables of the suspension bridge can be enlarged, an approximate triangle structure is formed by the carriageway beam and a part of the suspender cables, and stability of the suspension bridge is strengthened.
Description
Technical field
The present invention relates to a kind of bridge construction and construction method, relate to a kind of suspension bridge and the construction method thereof that combine linear weight cable specifically.
Background technology
Suspension bridge is a kind of Large Span Bridges.Known Suspension bridge structure is made up of bridge tower, anchorage, weight cable, runway beam and hoist cable, and weight cable is vertical curve, and two ends are fixed on anchorage, connects weight cable and runway beam by hoist cable.When this structure is used for Long span, lateral stability is not enough, therefore Yang Yongxin, Ge Yaojun, Xiang Haifan mention comparatively economy, effective method " improve large-span suspension bridge wind resisting stability can exploration " is: main push-towing rope is placed in the middle, triangle is formed with hoist cable and stiff girder, as shown in Figure 1, but owing to considering that main push-towing rope cannot be rigidly connected (namely central detain) with bridge floor at span centre by the necessity ensureing driving headroom.
Luo Xiheng, Xiao Rucheng, Xiang Haifan provide in one in " the main cable alignment analysis of cable of space cable suspension bridge " literary composition has the nemaline suspension bridge of horizontal loop across weight cable, as shown in Figure 2, this two main push-towing ropes are separated, have the nemaline weight cable of horizontal loop can provide lateral pull, thus increase lateral stability, but hoist cable inclination angle is little, the lateral stability provided for runway beam is little.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of Suspension bridge structure, utilize near and parallel main cable alignment and horizontal curve linear combination form, increase hoist cable inclination angle, strengthen bridge stability, and meet guarantee driving headroom needs; The construction method of this kind of Suspension bridge structure is provided.
Object of the present invention is achieved through the following technical solutions:
A kind of suspension bridge combining linear weight cable, be made up of runway beam, bridge tower, anchorage, weight cable, hoist cable, be characterized in: weight cable is made up of two main push-towing ropes, place respectively and be in bridge tower top and distance is less than on two cable saddles of stiff girder width, two ends are anchored on anchorage or are anchored on the runway beam of end bay, across the both sides of span centre runway beam in being anchored in the middle part of weight cable; Two main push-towing rope somewheres between bridge tower and anchor point establish main push-towing rope to conjugate pull bar, and the main push-towing rope between bridge tower to displacement pull bar is parallel, and the main push-towing rope between displacement pull bar and anchor point is the curve shape becoming spacing; Hoist cable connects the both sides of main push-towing rope and stiff girder with different gradients.
In order to ensure that structure is more effective to lateral stability, two cable saddle spacing on same bridge tower should reduce as far as possible, but should reserve that main push-towing rope is installed, tight cable and twine the construction operation space of silk protection, clear distance is greater than 1.0 meters.
Described main push-towing rope displacement pull bar is made up of the pull bar of two cuffs and more than, pull bar length is slightly less than the distance of two cable saddles on bridge tower, make the main push-towing rope keeping parallelism between displacement pull bar and bridge tower, the two ends of pull bar connect two cuffs respectively, and the inner chamber of cuff and the cross sectional shape of main push-towing rope coincide; Or described main push-towing rope displacement pull bar is one group of cuff, and the cross section of the inner chamber of cuff and two parallel main push-towing ropes coincide.
Following factor is considered in the position that displacement pull bar is arranged: space current for traffic on runway beam can not be occupied in the position of the weight cable that a conjugates between pull bar; B conjugates pull bar as far as possible near span centre, makes the main push-towing rope of parallel-segment can be as far as possible long, provides large inclination angle, thus increase the stability of runway beam to more hoist cable.
Be provided with some struts between described main push-towing rope, strut has cuff, cuff is fixed on main push-towing rope, is controlled the spacing of main push-towing rope by stay length; Also can establish rod member between cord clip, jointly form strut with cord clip.The setting position of strut is avoided affecting driving headroom.
Two main push-towing ropes of described composition weight cable can be the cable bundle of the cable composition of more than two respectively, are connected, fixture have the suspension centre of hoist cable, hoist cable top can be made to be connected on fixture between the cable of cable bundle with fixture.
In across span centre, the anchoring of weight cable and runway beam realizes in the following manner: on main push-towing rope, establish cuff, play clamping and protective effect; Between runway beam and cuff, establish connector, connector and runway beam form stable triangular structure.
Above-mentioned cuff is provided with securing member, utilizes securing member to be fixed on weight cable by cuff.
The implementation method of said structure of the present invention, different from the parallel main cable suspension bridge of routine, the measure of main push-towing rope plane positioning need be increased, comprise the following steps:
Step one: take cable saddle as control point, 2 main push-towing ropes between parallel erection two king-tower.After main cable erection completes, be in parallel free overhang, the main push-towing rope of parallel-segment has been in predetermined plan-position, and no longer translation in work progress afterwards, only vertical position changes.The elevation that main push-towing rope is installed is determined by calculating, needs to consider the various impacts in subsequent construction, makes final elevation meet predetermined value;
Step 2: install displacement pull bar, install cord clip;
Step 3: the main push-towing rope conjugated by span centre between pull bar backs down precalculated position, and temporary support bar is installed between main push-towing rope positions; In the process owing to conjugating the effect of pull bar, the parallel-segment main push-towing rope plan-position between bridge tower and displacement pull bar does not change; And the main push-towing rope horizontal alignment conjugated after this process between pull bar reach into bridge after state, substantially do not change in construction afterwards;
Step 4: mounting stay, installs hoist cable;
Step 4: lifting crane road beam, makes hoist cable be connected with runway beam.
Beneficial outcomes of the present invention is, the Suspension bridge structure of the linear weight cable of combinations thereof can make hoist cable inclination angle increase, and makes runway beam and a part of hoist cable form close to leg-of-mutton structure, strengthens bridge stability, can meet the needs of driving headroom simultaneously; Above-mentioned implementation method can be constructed this Suspension bridge structure easily, realizes the function of structure.
Accompanying drawing explanation
Fig. 1 is the triangular section structural representation of the suspension bridge in prior art;
Fig. 2 is prior art centre suspension cord bridge plane curve main push-towing rope structural upright schematic diagram;
Fig. 3 is enforcement structural plan of the present invention schematic diagram;
Fig. 4 is enforcement structure section schematic diagram of the present invention;
Fig. 5 is that weight cable of the present invention implements structural representation in the intermediate point anchoring of span centre;
Fig. 6 is the first enforcement structural representation of displacement pull bar of the present invention;
Fig. 7 is the enforcement structural representation of strut of the present invention;
Fig. 8 is that the second of displacement pull bar of the present invention implements structural representation.
Reference numeral: 1. bridge tower; 2. weight cable; 3. runway beam; 4. anchorage; 5. hoist cable; 21 struts; 22. connectors; 24. displacement pull bars; 241. cuff; 242. pull bar; 243. baffle plate.
Detailed description of the invention
Embodiment 1:
As Fig. 3, shown in Fig. 4, the suspension bridge of the linear weight cable of combination of the present invention, by bridge tower (1), weight cable (2), runway beam (3), anchorage (4), hoist cable (5) is formed, weight cable is made up of two main push-towing ropes, be placed on two cable saddles at bridge tower (1) top respectively, cable saddle spacing is less than runway beam width and is greater than 2 meters, weight cable two ends are anchored on anchorage (4), weight cable in across middle part be anchored in across runway beam (3) both sides, two main push-towing ropes bridge tower (1) and in across span centre anchor point between place establish main push-towing rope to conjugate pull bar (24), main push-towing rope between bridge tower to displacement pull bar is parallel, strut (21) is provided with between two main push-towing ropes, wherein, strut (21) there is cuff (241), by the cut to lengthen main push-towing rope spacing of pull bar (242), determine intensity and the quantity of pull bar (242) according to whole structural stability and force request by calculating.
As shown in Figure 5, weight cable in be establish cuff (241) at the middle part of weight cable (2) across the anchoring of span centre, between runway beam (3) and cuff, establish connector (22), form stable triangular structure with runway beam (3).
As shown in Figure 6, displacement pull bar (24) is made up of two cuffs (241) and two pull bars (242), the spacing that pull bar length is slightly less than two cable saddles on bridge tower deducts the length of a main push-towing rope diameter, make two main push-towing rope keeping parallelisms of weight cable, connect two cuffs (241) respectively at the two ends of pull bar (242), the inner chamber of cuff and the cross sectional shape of main push-towing rope coincide.
As shown in Figure 7, strut (21) is made up of two cuffs (241) and a pull bar (242), and pull bar length is slightly less than the clear distance of main push-towing rope, connects two cuffs (241) at the two ends of pull bar (242) respectively, and the inner chamber of cuff and the cross sectional shape of main push-towing rope coincide.
Above-mentioned cuff (241) is provided with securing member, utilizes securing member to be fixed on weight cable (2) by cuff (241).
The construction method of said structure, different from the parallel main cable suspension bridge of routine, comprise the following steps:
Step one: take cable saddle as control point, 2 weight cables (2) between parallel erection two king-tower.After having set up, the main push-towing rope of parallel-segment has been in predetermined plan-position, and no longer translation in work progress afterwards, only vertical position changes.The elevation that main push-towing rope is installed is determined by calculating, needs to consider the various impacts in subsequent construction, makes final elevation meet predetermined value;
Step 2: install displacement pull bar (24);
Step 3: the main push-towing rope conjugated by span centre between pull bar (24) backs down precalculated position, and temporary support bar is installed between main push-towing rope positions;
Step 4: install cord clip and strut (21), installs hoist cable (5);
Step 4: lifting crane road beam (3), makes hoist cable be connected with runway beam.
Embodiment 2:
As shown in Figure 8, displacement pull bar of the present invention is made up of two baffle plates (243) and two pull bars (242), the two ends of pull bar (242) connect two baffle plates (243) respectively, the medial surface of baffle plate (243) contacts with main push-towing rope, its surface coincide with the main push-towing rope profile of relevant position, to keep, two main push-towing ropes are parallel between bridge tower and displacement pull bar to be as the criterion pull bar length, determines the intensity of pull bar (242) and baffle plate (243) according to whole structural stability and force request by calculating.Between part cord clip, establish rigid bar, jointly form strut with cord clip.
Above-described embodiment is the specific embodiment of the present invention, only for illustration of the present invention, but not for limiting the present invention.
Claims (8)
1.
a kind of suspension bridge combining linear weight cable, be made up of runway beam, bridge tower, anchorage, weight cable, hoist cable, it is characterized in that: weight cable is made up of two main push-towing ropes, place respectively and be in bridge tower top and distance is less than on two cable saddles of runway beam width, two ends are anchored on anchorage or are anchored on the runway beam of end bay, across the both sides of span centre runway beam in being anchored in the middle part of weight cable; Two main push-towing rope somewheres between bridge tower and anchor point establish main push-towing rope to conjugate pull bar, and the main push-towing rope between bridge tower to displacement pull bar is parallel, and the main push-towing rope between displacement pull bar and anchor point is the curve shape becoming spacing; Hoist cable connects the both sides of main push-towing rope and runway beam with different gradients.
2.
the suspension bridge of the linear weight cable of combination according to claim 1, it is characterized in that described main push-towing rope displacement pull bar is made up of the pull bar of two cuffs and more than, pull bar length is slightly less than the distance of two cable saddles on bridge tower, make the main push-towing rope keeping parallelism between displacement pull bar and bridge tower, the two ends of pull bar connect two cuffs respectively, and the inner chamber of cuff and the cross sectional shape of main push-towing rope coincide.
3.
the suspension bridge of the linear weight cable of combination according to claim 1, it is characterized in that being provided with strut between described main push-towing rope, strut has cuff, and cuff is fixed on main push-towing rope, is controlled the spacing of main push-towing rope by stay length; Also can establish rod member between cord clip, jointly form strut with cord clip.
4.
the suspension bridge of the linear weight cable of combination according to claim 1, it is characterized in that two main push-towing ropes of described composition weight cable are the cable bundle of the cable composition of more than two respectively, be connected with fixture between cable, fixture have the suspension centre of hoist cable, hoist cable top can be made to be connected on fixture.
5.
the suspension bridge of the linear weight cable of combination according to claim 1, it is characterized in that in across span centre, the anchoring of weight cable and runway beam realizes in the following manner: on main push-towing rope, establish cuff, play clamping and protective effect; Between runway beam and cuff, establish connector, connector and runway beam form stable triangular structure.
6.
the suspension bridge of the linear weight cable of combination according to claim 1, it is characterized in that described displacement pull bar is made up of two baffle plates and two pull bars, the two ends of pull bar connect two baffle plates respectively, the medial surface of baffle plate contacts with main push-towing rope, its surface coincide with the main push-towing rope profile of relevant position, and to keep, two main push-towing ropes are parallel between bridge tower and displacement pull bar to be as the criterion pull bar length.
7.
the suspension bridge of the linear weight cable of combination according to claim 1, is characterized in that the distance of two cable saddles on bridge tower and the spacing of parallel-segment main push-towing rope are not less than 1.0m.
8.
claim combines an implementation method for the suspension bridge of linear weight cable as 1 to 7 any one, it is characterized in that: comprise the following steps:
Step one: take cable saddle as control point, 2 main push-towing ropes between parallel erection two king-tower;
Step 2: install displacement pull bar;
Step 3: the main push-towing rope conjugated by span centre between pull bar backs down precalculated position, and temporary support bar is installed between main push-towing rope positions;
Step 4: install cord clip and strut, installs hoist cable;
Step 4: lifting crane road beam.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318498.2A CN103061244B (en) | 2011-10-19 | 2011-10-19 | Combination line-shaped bearing cable suspension bridge and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110318498.2A CN103061244B (en) | 2011-10-19 | 2011-10-19 | Combination line-shaped bearing cable suspension bridge and construction method thereof |
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| CN103061244A CN103061244A (en) | 2013-04-24 |
| CN103061244B true CN103061244B (en) | 2015-02-11 |
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| CN104060545B (en) * | 2014-07-10 | 2016-02-10 | 中交二航局第四工程有限公司 | Can be used for the suspension trestle waterborne of pumping of concrete and construction method thereof and purposes |
| CN104787673A (en) * | 2015-03-19 | 2015-07-22 | 张同茂 | Gantry crane having main beam with suspension cable type structure |
| CN105019356B (en) * | 2015-04-28 | 2017-12-01 | 中国电建集团贵阳勘测设计研究院有限公司 | It is outstanding to draw combination to set up engineering method and device |
| CN108153972B (en) * | 2017-12-22 | 2021-05-28 | 腾达建设集团股份有限公司 | Analysis method for whole process of cable hoisting |
| CN108647477B (en) * | 2018-06-27 | 2021-08-10 | 大连理工大学 | Design method of suspension bridge with main cable as gyro wheel line |
| CN108824164B (en) * | 2018-08-16 | 2023-09-29 | 长江勘测规划设计研究有限责任公司 | Space three-dimensional cable system ground anchor type suspension bridge bearing wind load of larger transverse bridge |
| CN110373998B (en) * | 2019-06-05 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Supporting device for forming main cable of suspension bridge of space cable system and using method |
| CN110941872B (en) * | 2019-12-16 | 2021-08-03 | 北京科技大学 | Method for determining change of sag of main cable and horizontal displacement of tower top of suspension bridge along with temperature |
| CN111691297B (en) * | 2020-04-30 | 2022-08-23 | 武汉船用机械有限责任公司 | Double main cable clamp |
| CN113293690B (en) * | 2021-06-01 | 2022-05-27 | 长安大学 | Dynamic adjusting system for transverse movement of main cable of suspension bridge and construction method thereof |
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| JPH01210507A (en) * | 1988-02-17 | 1989-08-24 | Mitsubishi Heavy Ind Ltd | Vibrationproof structure for cable constructed for structure |
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