CN110629678A - Cable-stayed bridge's cable auxiliary stand - Google Patents
Cable-stayed bridge's cable auxiliary stand Download PDFInfo
- Publication number
- CN110629678A CN110629678A CN201911012715.8A CN201911012715A CN110629678A CN 110629678 A CN110629678 A CN 110629678A CN 201911012715 A CN201911012715 A CN 201911012715A CN 110629678 A CN110629678 A CN 110629678A
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- Prior art keywords
- cable
- support
- bridge
- support beam
- stay
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- 238000010276 construction Methods 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to an auxiliary stay cable bracket of a cable-stayed bridge, belonging to the technical field of cable-stayed bridge engineering construction. The invention comprises bridge abutments arranged on two sides of a river channel, a cable tower is arranged between the bridge abutments, the cable tower is connected with a plurality of stay cables, a plurality of support piers are arranged between the bridge abutments at intervals, support beams are fixedly arranged on the tops of the support piers, two ends of each support beam in the width direction are connected with the stay cables, and the connection points of the support beams and the stay cables are arranged at intervals along the length direction of the support beams. The invention utilizes the stay cable of the cable-stayed bridge to be temporarily fixed on the support beam required by the cast-in-place construction of the main beam, assists the support beam to bear force, enables the support system to become a multipoint elastic support beam, improves the stress of the support beam, can reduce the cost of temporary facilities such as supports and the like, and saves the construction period. When the support is constructed, the support beam can be erected by utilizing the stay cable for assistance, namely the stay cable is used as the elastic support of the support beam, and then the support beam is subjected to pushing construction on the bank.
Description
Technical Field
The invention relates to an auxiliary stay cable bracket of a cable-stayed bridge, belonging to the technical field of cable-stayed bridge engineering construction.
Background
A cable-stayed bridge is also called a diagonal tension bridge, is a bridge with a main beam directly pulled on a bridge tower by a plurality of guys, and is a structural system formed by combining a pressure-bearing tower, a pulled guy and a bending-bearing beam body. It can be seen as a multi-span elastically supported continuous beam with guy cables instead of buttresses. It can reduce the bending moment in the beam body, reduce the building height, lighten the structural weight and save materials. The cable-stayed bridge mainly comprises a cable tower, a main beam and a stay cable.
The construction of the cable-stayed bridge with smaller span can generally adopt two schemes of hanging basket construction and support cast-in-place construction.
When the span of the bridge is small and wide, or when the terrain at the bridge position is that the clearance of the beam bottoms at one side or two sides of the bridge tower is small and cannot meet the requirements of the basket installation space and the operation space, the basket construction is uneconomical or unsafe, and the support cast-in-place construction is suitable.
The construction period of the cast-in-place bracket is long, the workload is large, the steel consumption is large, the investment is large, the cable-stayed bridge with the common scale needs to lead the bracket to experience at least one flood season in common areas, when crossing rivers, the water blocking is serious, the direct foundation scouring caused by the water blocking is complicated to calculate, or when the foundation is rock, the construction of the steel pipe pile is difficult, the temporary measure is complicated to remove, and sometimes a special process needs to be adopted, so the construction cost and the construction period of the steel pipe are high if a large amount of piles or brackets are used.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the construction scheme of the cable-stayed bridge support is simpler and more convenient to design and calculate, better in safety, more environment-friendly and better in permanent-temporary bonding property, and the number of the arranged buttresses is reduced.
In order to solve the technical problems, the invention adopts the technical scheme that: cable-stay bridge's cable auxiliary stand, including setting up in the abutment at river course both sides, be provided with the cable-stayed tower between the abutment, the cable-stayed tower is connected with many cables, many buttresses of interval arrangement between the abutment, the top fixed mounting cradling piece of buttresses, and the both ends of cradling piece width direction are connected with the cable to the tie point of cradling piece and cable is along cradling piece length direction interval arrangement.
Further, the method comprises the following steps: the support piers are steel pipe piles arranged at intervals in the transverse bridge direction.
When the cable-stayed bridge is constructed, the method comprises the following steps:
bridge abutments are built on two sides of the river channel, and cable towers are built between the bridge abutments;
constructing a support pier;
installing the cable tower connecting end of the inhaul cable;
erecting a support beam at the top of the support pier;
connecting the beam end of the stay cable with the support beam, and tensioning;
carrying out main beam cast-in-place concrete construction on the support beam;
after the main beam reaches the design strength and the main beam prestress construction is finished, the first pair of inhaul cables are detached from the support beam according to the design sequence, then the first pair of inhaul cables are installed on the main beam and tensioned;
respectively transferring the rest pairs of stay cables to the main beam from the support beam according to a design sequence, and tensioning;
dismantling the support beam and the support pier;
constructing a bridge deck system;
and (5) operating the bridge.
For convenient construction, when the support beam is erected at the top of the support pier, the stay cable is used as the elastic support of the support beam, and then the support beam is subjected to pushing construction on the shore.
The invention has the beneficial effects that: the stay cable of the cable-stayed bridge is temporarily fixed on the support beam required by the cast-in-place construction of the main beam, the stress of the support beam is assisted, the support system becomes a multipoint elastic support beam, the stress of the support beam is improved, the cost of temporary facilities such as a support and the like can be reduced, and the construction period is shortened. When the support is constructed, the support beam can be erected by utilizing the stay cable for assistance, namely the stay cable is used as the elastic support of the support beam, and then the support beam is subjected to pushing construction on the bank.
Drawings
FIG. 1 is a schematic longitudinal bridging elevational view of the present invention;
FIG. 2 is a view A-A of FIG. 1;
FIG. 3 is a schematic plan view of the present invention;
the labels in the figure are: 1-bridge abutment, 2-cable tower, 3-guy cable, 4-support pier, 5-support beam, 6-main beam, 7-ground line, 8-support frame and 9-anchoring beam.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
As shown in fig. 1 to 3, the cable auxiliary support of the cable-stayed bridge of the invention comprises bridge abutments 1 arranged at both sides of a river, cable towers 2 arranged between the bridge abutments 1, a plurality of cable 3 connected to the cable towers 2, a plurality of support piers 4 arranged at intervals between the bridge abutments 1, support beams 5 fixedly mounted at the tops of the support piers 4, both ends of the support beams 5 in the width direction are connected with the cable 3, and the connection points of the support beams 5 and the cable 3 are arranged at intervals along the length direction of the support beams 5. For convenient construction and cost saving, the support piers 4 are steel pipe piles arranged at intervals in the transverse bridge direction. For connecting the guy cable 3 conveniently, the structure of the bracket beam 5 comprises an anchoring beam 9 for anchoring and connecting the guy cable 3.
When the cable-stayed bridge is constructed, the method comprises the following steps:
the method comprises the following steps of building bridge abutments 1 on two sides of a river channel, and building cable towers 2 between the bridge abutments 1;
constructing a support pier 4;
installing the cable tower connecting end of the inhaul cable 3;
erecting a support beam 5 at the top of the support pier 4;
connecting the beam end of the inhaul cable 3 with the support beam 5, and tensioning; whether the position of the stay cable 3 on the support beam 5 corresponds to the position of the stay cable 3 on the main beam 6 or not can be selected according to the stress condition, whether the support frame 8 is arranged on the support beam 5 or not can be determined according to the anchoring point position of the stay cable 3 on the concrete main beam and the space size of a support rod piece, and the requirement of the main beam end installation space of the stay cable 3 can be met;
carrying out the cast-in-place concrete construction of the main beam 6 on the support beam 5;
after the main beam 6 reaches the design strength and the prestress construction of the main beam 6 is finished, the first pair of inhaul cables 3 are detached from the support beams 5 according to the design sequence, and then the inhaul cables are installed on the main beam 6 and tensioned;
respectively transferring the rest pairs of the stay ropes 3 from the support beams 5 to the main beams 6 according to a design sequence, and tensioning;
dismantling the support beam 5 and the support pier 4;
constructing a bridge deck system;
and (5) operating the bridge.
For convenient construction, when setting up a trestle beam 5 at the top of support pier 4, can utilize 3 supplementary erections of cable to put up trestle beam 5, be about to cable 3 as the elastic support of trestle beam 5, later push away the construction to trestle beam 5 ashore.
The invention utilizes the stay cable 3 of the cable-stayed bridge to be temporarily fixed on the bracket beam 5 required by the cast-in-place construction of the main beam 6, assists the bracket beam 5 to bear force, enables the bracket system to become a multi-point elastic support bracket beam, improves the stress of the bracket beam 5, can reduce the cost of temporary facilities such as brackets and the like, and saves the construction period.
Claims (5)
1. Cable-stay bridge's cable auxiliary stand, including setting up in abutment (1) on two banks in river course, be provided with cable tower (2) between abutment (1), cable tower (2) are connected with many cables (3), its characterized in that: many rest pier (4) of interval arrangement between abutment (1), the top fixed mounting support roof beam (5) of rest pier (4), support roof beam (5) width direction's both ends are connected with cable (3) to the tie point of support roof beam (5) and cable (3) is along support roof beam (5) length direction interval arrangement.
2. A cable-stayed bridge auxiliary stand according to claim 1, characterized in that: the support piers (4) are steel pipe piles arranged at intervals in the transverse bridge direction.
3. The construction method of the cable-stayed bridge is characterized by comprising the following steps of:
bridge abutments (1) are built on two sides of the river channel, and cable towers (2) are built between the bridge abutments (1);
constructing a support pier (4);
installing the cable tower connecting end of the inhaul cable (3);
erecting a support beam (5) at the top of the support pier (4);
connecting the beam end of the inhaul cable (3) with the support beam (5) and tensioning;
carrying out the cast-in-place concrete construction of the main beam (6) on the support beam (5);
after the main beam (6) reaches the design strength and the prestress construction of the main beam (6) is completed, the first pair of inhaul cables (3) are detached from the support beam (5) according to the design sequence, and then the inhaul cables are installed on the main beam (6) and tensioned;
respectively transferring the rest pairs of stay ropes (3) to the main beam (6) from the support beam (5) according to a design sequence, and tensioning;
dismantling the bracket beam (5) and the bracket pier (4);
constructing a bridge deck system;
and (5) operating the bridge.
4. A construction method of a cable-stayed bridge according to claim 3, characterized in that: the support piers (4) adopt steel pipe piles which are arranged at intervals in the transverse bridge direction.
5. A cable-stayed bridge construction method according to claim 3 or 4, characterized in that: when the support beam (5) is erected at the top of the support pier (4), the stay cable (3) is used as an elastic support of the support beam (5), and then the support beam (5) is pushed and constructed on the shore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012715.8A CN110629678A (en) | 2019-10-23 | 2019-10-23 | Cable-stayed bridge's cable auxiliary stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012715.8A CN110629678A (en) | 2019-10-23 | 2019-10-23 | Cable-stayed bridge's cable auxiliary stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110629678A true CN110629678A (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911012715.8A Pending CN110629678A (en) | 2019-10-23 | 2019-10-23 | Cable-stayed bridge's cable auxiliary stand |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253620A (en) * | 2002-03-06 | 2003-09-10 | Kurosawa Construction Co Ltd | Cable stayed bridge and its construction method |
| KR20090000443A (en) * | 2007-06-28 | 2009-01-07 | 대림산업 주식회사 | Pulley block passing-device for pws cable installation in suspension bridges |
| CN101457514A (en) * | 2008-12-31 | 2009-06-17 | 广东省基础工程公司 | Cable stayed bridge construction method |
| CN101649604A (en) * | 2009-08-28 | 2010-02-17 | 中铁八局集团第一工程有限公司 | Construction bracket of 1# block of inclined pull bridge and constructing method thereof |
| CN102154990A (en) * | 2011-05-13 | 2011-08-17 | 长沙理工大学 | Electing method for side span overhang-middle span cable-stayed three-tower self-anchored type combination suspension bridge |
| CN102286930A (en) * | 2011-09-09 | 2011-12-21 | 中铁五局集团建筑工程有限责任公司 | Construction method of cable-stayed bridge |
| CN103866696A (en) * | 2014-03-26 | 2014-06-18 | 中铁二十四局集团安徽工程有限公司 | Cast-in-situ support of long-cantilever zero segment of short-pylon cable-stayed bridge |
| CN104631326A (en) * | 2014-12-22 | 2015-05-20 | 广东省公路勘察规划设计院股份有限公司 | Main beam cable-stayed suspension forming technological method for self-anchorage type suspension bridge |
| CN104790301A (en) * | 2015-04-23 | 2015-07-22 | 中铁建设集团有限公司 | Sling converting once tensioning construction method of rope bridge system |
| CN105648917A (en) * | 2016-01-08 | 2016-06-08 | 长沙理工大学 | Cable-beam synchronization construction method for composite beam self-anchored suspension bridge |
| CN106012797A (en) * | 2016-07-25 | 2016-10-12 | 同济大学 | All-ground-anchor type single-tower double-span cable-stayed bridge structure and construction method thereof |
| CN206069230U (en) * | 2016-09-27 | 2017-04-05 | 湖南省中南桥梁安装工程有限公司 | A kind of multi-tower continuous across hoist cable crane |
| CN107059637A (en) * | 2017-05-16 | 2017-08-18 | 武汉工程大学 | Long span self-anchoring type suspension bridge system conversion method |
| CN211006369U (en) * | 2019-10-23 | 2020-07-14 | 中国电建集团成都勘测设计研究院有限公司 | Cable-stayed bridge's cable auxiliary stand |
-
2019
- 2019-10-23 CN CN201911012715.8A patent/CN110629678A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253620A (en) * | 2002-03-06 | 2003-09-10 | Kurosawa Construction Co Ltd | Cable stayed bridge and its construction method |
| KR20090000443A (en) * | 2007-06-28 | 2009-01-07 | 대림산업 주식회사 | Pulley block passing-device for pws cable installation in suspension bridges |
| CN101457514A (en) * | 2008-12-31 | 2009-06-17 | 广东省基础工程公司 | Cable stayed bridge construction method |
| CN101649604A (en) * | 2009-08-28 | 2010-02-17 | 中铁八局集团第一工程有限公司 | Construction bracket of 1# block of inclined pull bridge and constructing method thereof |
| CN102154990A (en) * | 2011-05-13 | 2011-08-17 | 长沙理工大学 | Electing method for side span overhang-middle span cable-stayed three-tower self-anchored type combination suspension bridge |
| CN102286930A (en) * | 2011-09-09 | 2011-12-21 | 中铁五局集团建筑工程有限责任公司 | Construction method of cable-stayed bridge |
| CN103866696A (en) * | 2014-03-26 | 2014-06-18 | 中铁二十四局集团安徽工程有限公司 | Cast-in-situ support of long-cantilever zero segment of short-pylon cable-stayed bridge |
| CN104631326A (en) * | 2014-12-22 | 2015-05-20 | 广东省公路勘察规划设计院股份有限公司 | Main beam cable-stayed suspension forming technological method for self-anchorage type suspension bridge |
| CN104790301A (en) * | 2015-04-23 | 2015-07-22 | 中铁建设集团有限公司 | Sling converting once tensioning construction method of rope bridge system |
| CN105648917A (en) * | 2016-01-08 | 2016-06-08 | 长沙理工大学 | Cable-beam synchronization construction method for composite beam self-anchored suspension bridge |
| CN106012797A (en) * | 2016-07-25 | 2016-10-12 | 同济大学 | All-ground-anchor type single-tower double-span cable-stayed bridge structure and construction method thereof |
| CN206069230U (en) * | 2016-09-27 | 2017-04-05 | 湖南省中南桥梁安装工程有限公司 | A kind of multi-tower continuous across hoist cable crane |
| CN107059637A (en) * | 2017-05-16 | 2017-08-18 | 武汉工程大学 | Long span self-anchoring type suspension bridge system conversion method |
| CN211006369U (en) * | 2019-10-23 | 2020-07-14 | 中国电建集团成都勘测设计研究院有限公司 | Cable-stayed bridge's cable auxiliary stand |
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