CN200971475Y - Lifting system for arch rib large section mounting joining of steel arch bridge - Google Patents
Lifting system for arch rib large section mounting joining of steel arch bridge Download PDFInfo
- Publication number
- CN200971475Y CN200971475Y CN 200620123101 CN200620123101U CN200971475Y CN 200971475 Y CN200971475 Y CN 200971475Y CN 200620123101 CN200620123101 CN 200620123101 CN 200620123101 U CN200620123101 U CN 200620123101U CN 200971475 Y CN200971475 Y CN 200971475Y
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- Prior art keywords
- tower
- arch rib
- lifting
- dorsal funciculus
- arch
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Abstract
The utility model relates to a lifting and assembling system for large arch rib segment of arch bridge, which comprises two medium hoist towers and a compression cable between the two towers which pushes and pulls the two towers. The two medium hoist towers are respectively connected with the ends of the stay cable and suspension cable. The other end of the suspension cable is connected with the arch rib segment to be lifted and the other end of the stay cable is connected with the anchor block. The stay cable is consisted of a steel rope and a sync-stressing jack, wherein one end of the steel rope is connected with the medium hoist tower and the other end is connected with the sync-stressing jack. The sync-stressing jack is mounted inside the counter-force frame connected with the anchor block. The steel rope of the stay cable is pulled by the sync-stressing jack, and the pulling force increases in accordance with the angle between the suspension cable and the medium hoist tower, thereby, the imbalanced bending moment of the bottom of the medium hoist tower during lifting the arch rib segment is overcome, which greatly reduces the design difficulty, makes the assembling of the arch rib segment convenient and fast, shortens the construction period, ensures the precision of arch rib closure and reduces the disturbance to below-bridge route during construction.
Description
Technical field
The utility model relates to a kind of Hoisting System of long-span arch bridge, and particularly a kind of steel arched bridge arch rib large segment of big section lifting and beam type closure technology that adopts is installed the closure Hoisting System.
Background technology
Along with the development of transport development, the Longspan Bridge technology has had the raising of leap.Arch bridge is because it has incomparable curve modeling of other bridge type and aesthetic feeling, and the easier designer of allowing has the space of performance on bridge aesthetics, thereby domesticly in recent years built many long-span arch bridges.The construction of long-span arch bridge shows, because the arch rib of arch bridge mostly is space curve, brings very big difficulty for its construction and installation.
At present, the conventional construction of steel arch bridge comprises cable segment lifting and cantilever segment lifting, and Fig. 4 is cable segment lifting construction schematic diagram, and Fig. 5 is cantilever segment lifting construction schematic diagram.Said method is to set up Sarasota 2 at the arch rib two ends, and stretch-draw tail rope 3 between Sarasota 2 and the ground, cable hanging method be stretch-draw main rope 1 between Sarasota 2 also.When arch rib is installed, with whole arch rib be divided into several lifting sections 5 ', utilize main rope 1 or creeper-traveler 1 ' install piecemeal, and on mounted sections 5 stretch-draw several tiltedly draw knotted rope 4 temporarily, until last closure.Behind the closure section installation in position of arch rib at vault, progressively remove and tiltedly draw knotted rope 4 on the arch rib temporarily, make arch rib become the stress form of arch from the curved beam force way of multiple spot resiliency supported.Practice of construction shows that there is big limitation in above-mentioned job practices, is embodied in:
1. because the arch rib jib-length of long-span steel arch bridge is too big, the accumulated error of An Zhuaning makes the closure precision be difficult to guarantee piecemeal;
2. the lifting stage of each sections all can have influence on the navigation in waters under the bridge in the installation;
Restricted by the big and execution conditions of difficulty of construction, the sections length of section assembling can not be very big at every turn, and the whole arch rib engineering time is long, influences the construction period.
The utility model content
The purpose of this utility model is at the lifting of prior art cable and cantilever construction method for hanging arch rib installation accuracy is low, influence technological deficiencies such as navigation and long construction period, provide a kind of steel arched bridge arch rib large segment that the closure Hoisting System is installed, the three big sections that can effectively be applied to arch rib promote, and make the arch rib installation of long-span arch bridge become convenient, fast.
To achieve these goals, the utility model provides a kind of steel arched bridge arch rib large segment that the closure Hoisting System is installed, comprise the pressure Tasso that promotes tower and the two stretch-draw in two, the described tower that promotes in each is connected with an end of a dorsal funciculus and a hoist cable respectively, the other end of described hoist cable connects rib-lifting section to be hoisted, the other end and the earth anchor of described dorsal funciculus are hinged, described dorsal funciculus is the synchronous tension dorsal funciculus, described synchronous tension dorsal funciculus comprises dorsal funciculus steel strand and synchronous tension jack, one end of described dorsal funciculus steel strand promotes tower in connecting, the other end connects the synchronous tension jack, described synchronous tension jack be installed in the hinged reaction frame of earth anchor in.
Further, described synchronous tension jack is connected with a computer control that changes its stretching force of control according to angle between described hoist cable and middle lifting tower.
The utility model proposes a kind of steel arched bridge arch rib large segment installation closure Hoisting System that is used to promote broad in the middle section arch rib of steel arch bridge, by by dorsal funciculus, the middle tower that promotes is formed a vertical bridge to metastable structure with the pressure Tasso, and with dorsal funciculus be arranged to can synchronous tension dorsal funciculus, can promote the stretching force of the horizontal applied force adjusted in concert dorsal funciculus of tower according to hoist cable centering in lifting, the utility model has been realized in the rib-lifting section lifting process, middle lifting tower is subjected to the horizontal applied force of relative equilibrium, therefore overcome the unbalanced moment at the bottom of the middle lifting Tata, promoted the design difficulty of tower in both having greatly reduced, promote the material usage on tower and basis thereof in the minimizing, make the arch rib installation of long-span arch bridge become convenient again, fast, shortened construction period greatly, the closure precision of arch rib is guaranteed, when reducing the arch rib construction to the interference in navigation channel under the bridge.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model synchronous tension dorsal funciculus structural representation;
Fig. 3 utilizes the utility model to implement the schematic diagram of broad in the middle section lifting;
Fig. 4 is cable segment lifting construction schematic diagram;
Fig. 5 is cantilever segment lifting construction schematic diagram.
Description of reference numerals:
The 6-rib-lifting section; The interim tie-rod of 7-level; Big section of 8-side;
9-presses Tasso; Promote tower among the 11-; The 13-dorsal funciculus;
The 14-hoist cable; The 15-earth anchor; The 16-rotational pin;
The 17-reaction frame; 131-dorsal funciculus steel strand; 132-synchronous tension jack.
The specific embodiment
Fig. 1 is the utility model structural representation.As shown in Figure 1, the utility model steel arched bridge arch rib large segment install the closure Hoisting System comprise promote tower 11 in two, press Tasso 9, two dorsal funciculus 13 and two hoist cables 14, be used to promote broad in the middle section arch rib of steel arch bridge.Wherein press Tasso 9 stretch-draw in two, to promote between the tower 11, one end of each hoist cable 14 is connected the upper end that promotes tower 11 in by promoting jack, the other end connects rib-lifting section 6, during connecting one, one end of each dorsal funciculus 13 promotes tower 11, the other end and earth anchor are hinged, and two dorsal funciculus 13 are the synchronous tension dorsal funciculus, can promote its stretching force of horizontal applied force adjusted in concert of tower 11 according to hoist cable 14 centering in lifting, promote the horizontal force that tower 11 is subjected in the balance.
Conflict with middle lifting tower when transportation by driving is in place for fear of rib-lifting section, generally the clear distance between middle lifting tower is arranged to length greater than rib-lifting section, when so central lifting tower 11 promotes rib-lifting section 6 by two hoist cables 14, hoist cable 14 tilts, and its angle of inclination becomes greatly with the variation of rib-lifting section 6 hoisting depths, so the horizontal applied force of hoist cable 14 centerings lifting tower 11 also increases synchronously with the lifting of rib-lifting section 6.Because middle lifting tower 11 is highly big, this horizontal applied force will produce very big moment of flexure in the tower bottom of middle lifting tower 11, brings difficulty for the design of middle lifting tower 11.The utility model is in order to promote the unbalanced moment at the bottom of tower 11 towers in overcoming, two dorsal funciculus 13 are arranged to the synchronous tension dorsal funciculus, its stretching force can promote the horizontal applied force adjusted in concert of tower 11 according to hoist cable 14 centering in lifting, realization changes synchronous tension according to hoist cable 14 and 11 angles of middle lifting tower, make rib-lifting section 6 in lifting process, the unbalanced moment that hoist cable 14 centerings promote the generation of tower 11 bottoms is overcome, thereby promote the design difficulty of tower 11 in reducing greatly, promote the material usage on tower 11 and basis thereof in the minimizing.The effect of pressing Tasso 9 is with promoting tower 11 in two and two dorsal funciculus 14 form a vertical bridge together to metastable structure, make the utility model in whole construction course vertical bridge to wind loading rating improve greatly, its security performance is guaranteed fully.
In technique scheme, the utility model synchronous tension dorsal funciculus is realized the adjusted in concert of its stretching force by the synchronous tension jack is set, and Fig. 2 is the utility model synchronous tension dorsal funciculus structural representation.As shown in Figure 2, the utility model synchronous tension dorsal funciculus comprises dorsal funciculus steel strand 131 and synchronous tension jack 132, and dorsal funciculus steel strand 131 are connected with earth anchor 15 by reaction frame 17 with synchronous tension jack 132.Particularly, earth anchor 15 fixes on the ground, and hinged with the lower end of reaction frame 17 by rotational pin 16, synchronous tension jack 132 is installed in the reaction frame 17, be connected with an end of dorsal funciculus steel strand 131, promote the top of tower 11 during the other end of dorsal funciculus steel strand 131 connects.In order to regulate the stretching force of synchronous tension jack 132, synchronous tension jack 132 also connects the size that a computer control (not shown) is controlled its stretching force, computer control changes the output control signal according to hoist cable 14 and 11 angles of middle lifting tower, the stretching force of control synchronous tension jack 132.
Fig. 3 utilizes the utility model to implement the schematic diagram of broad in the middle section lifting.Set up in the arch rib relevant position and to promote tower 11 in two, stretch-draw dorsal funciculus 13 between middle lifting tower 11 and the ground, Tasso 9 is pressed in stretch-draw between the middle lifting tower 11, makes to press to promote tower 11 in the Tasso 9, two and two dorsal funciculus 13 form a vertical bridge to metastable structure; The whole arch rib of steel arch bridge is divided into big section 8 of one broad in the middle section 6 and two side, and big section 8 lifting of two sides is in place; The hoist cable 14 that is connected with middle lifting tower 11 upper ends connects broad in the middle section 6 two ends respectively, upwards promotes the tied arch of forming with the interim tie-rod 7 of level by broad in the middle section 6; In the lifting process, angle between hoist cable 14 and the middle lifting tower 11 increases gradually, therefore hoist cable 14 centerings promote the also increase thereupon of horizontal applied force of tower 11, this moment, dorsal funciculus 13 also changed its stretching force of increase synchronously according to hoist cable 14 and 11 angles of middle lifting tower, promote the horizontal applied force that tower 11 is subjected in the balance, finally overcome the unbalanced moment at the bottom of its tower.The Hoisting System of being made up of dorsal funciculus 13, middle lifting tower 11 and pressure Tasso 9 by the utility model can make the arch rib installation of long-span arch bridge become convenient, fast, shortened construction period greatly, the closure precision of arch rib be guaranteed, when reducing the arch rib construction to the interference in navigation channel under the bridge.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.
Claims (2)
1. a steel arched bridge arch rib large segment is installed the closure Hoisting System, comprise the pressure Tasso that promotes tower and the two stretch-draw in two, the described tower that promotes in each is connected with an end of a dorsal funciculus and a hoist cable respectively, the other end of described hoist cable connects rib-lifting section to be hoisted, the other end and the earth anchor of described dorsal funciculus are hinged, it is characterized in that, described dorsal funciculus is the synchronous tension dorsal funciculus, described synchronous tension dorsal funciculus comprises dorsal funciculus steel strand and synchronous tension jack, one end of described dorsal funciculus steel strand promotes tower in connecting, the other end connects the synchronous tension jack, described synchronous tension jack be installed in the hinged reaction frame of earth anchor in.
2. steel arched bridge arch rib large segment as claimed in claim 1 is installed the closure Hoisting System, it is characterized in that, described synchronous tension jack is connected with a computer control of controlling its stretching force according to angle variation between described hoist cable and middle lifting tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123101 CN200971475Y (en) | 2006-07-28 | 2006-07-28 | Lifting system for arch rib large section mounting joining of steel arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123101 CN200971475Y (en) | 2006-07-28 | 2006-07-28 | Lifting system for arch rib large section mounting joining of steel arch bridge |
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| Publication Number | Publication Date |
|---|---|
| CN200971475Y true CN200971475Y (en) | 2007-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620123101 Expired - Lifetime CN200971475Y (en) | 2006-07-28 | 2006-07-28 | Lifting system for arch rib large section mounting joining of steel arch bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811563A (en) * | 2009-12-30 | 2010-08-25 | 烟台打捞局 | Salvage method of sinking ship on the sea |
| CN102071644A (en) * | 2010-12-31 | 2011-05-25 | 中铁港航工程局有限公司 | Lifting installation method of integral bridge arch rib |
| CN101644030B (en) * | 2007-12-27 | 2011-10-19 | 中交第二航务工程局有限公司 | Beam section pulling, shifting and combining device used for spanning and pushing auxiliary closure in cable stayed bridge |
| CN102561191A (en) * | 2011-12-13 | 2012-07-11 | 广东省公路勘察规划设计院股份有限公司 | Integral lifting system and construction method for arch bridge ribs |
| CN102094389B (en) * | 2009-12-14 | 2013-04-24 | 上海市基础工程有限公司 | Separable large-section truss girder hydraulic lifting device |
| CN104328740A (en) * | 2014-11-10 | 2015-02-04 | 中铁武桥重工（珠海）有限公司 | Large-span steel tubular arched bridge vertical rotation construction and linear control method |
-
2006
- 2006-07-28 CN CN 200620123101 patent/CN200971475Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644030B (en) * | 2007-12-27 | 2011-10-19 | 中交第二航务工程局有限公司 | Beam section pulling, shifting and combining device used for spanning and pushing auxiliary closure in cable stayed bridge |
| CN102094389B (en) * | 2009-12-14 | 2013-04-24 | 上海市基础工程有限公司 | Separable large-section truss girder hydraulic lifting device |
| CN101811563A (en) * | 2009-12-30 | 2010-08-25 | 烟台打捞局 | Salvage method of sinking ship on the sea |
| CN102071644A (en) * | 2010-12-31 | 2011-05-25 | 中铁港航工程局有限公司 | Lifting installation method of integral bridge arch rib |
| CN102071644B (en) * | 2010-12-31 | 2012-06-13 | 中铁港航工程局有限公司 | Lifting installation method of integral bridge arch rib |
| CN102561191A (en) * | 2011-12-13 | 2012-07-11 | 广东省公路勘察规划设计院股份有限公司 | Integral lifting system and construction method for arch bridge ribs |
| CN104328740A (en) * | 2014-11-10 | 2015-02-04 | 中铁武桥重工（珠海）有限公司 | Large-span steel tubular arched bridge vertical rotation construction and linear control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071107 |
|
| EXPY | Termination of patent right or utility model |