CN211006369U - Cable-stayed bridge's cable auxiliary stand - Google Patents
Cable-stayed bridge's cable auxiliary stand Download PDFInfo
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- CN211006369U CN211006369U CN201921786927.7U CN201921786927U CN211006369U CN 211006369 U CN211006369 U CN 211006369U CN 201921786927 U CN201921786927 U CN 201921786927U CN 211006369 U CN211006369 U CN 211006369U
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Abstract
The utility model relates to a cable-stay bridge's cable auxiliary stand belongs to cable-stay bridge engineering construction technical field. The utility model discloses a set up in the abutment on river course both sides, be provided with the cable tower between the abutment, the cable tower is connected with many cables, many rest piers of interval arrangement between the abutment, the top fixed mounting support roof beam of rest pier, support roof beam width direction's both ends are connected with the cable to the tie point of support roof beam and cable is along support roof beam length direction interval arrangement. The utility model discloses utilize cable-stay bridge's cable to fix temporarily on the required support beam of the cast-in-place construction of girder, supplementary support beam atress makes mounting system become multiple spot elastic support beam, improves support beam atress, can reduce the expense of temporary facilities such as support, saves the time limit for a project. 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 utility model relates to a cable-stay bridge's cable auxiliary stand belongs to cable-stay bridge engineering construction technical field.
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.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: 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.
For solving the technical problem the utility model discloses the technical scheme who adopts is: 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.
The utility model provides a cable-stay bridge when the construction, including following step:
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 utility model has the advantages 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 view of a longitudinal bridge in vertical elevation;
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 present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1 to 3, the utility model discloses well cable-stayed bridge's cable auxiliary stand, including setting up in abutment 1 at river course both sides, be provided with cable tower 2 between abutment 1, cable tower 2 is connected with many cables 3, many support piers 4 of interval arrangement between abutment 1, support pier 4's top fixed mounting outrigger 5, 5 width direction's of outrigger both ends are connected with cable 3 to outrigger 5 and cable 3's tie point are along 5 length direction interval arrangements of outrigger. 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.
The utility model provides a cable-stay bridge when the construction, including following step:
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 utility model discloses utilize cable-stay bridge's cable 3 to fix temporarily on 6 cast-in-place required support beams of construction of girder 5, supplementary support beams 5 atress makes mounting system become multiple spot elastic support beams, improves support beams 5 atress, can reduce the expense of temporary facilities such as supports, saves the time limit for a project.
Claims (2)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921786927.7U CN211006369U (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 |
|---|---|---|---|
| CN201921786927.7U CN211006369U (en) | 2019-10-23 | 2019-10-23 | Cable-stayed bridge's cable auxiliary stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211006369U true CN211006369U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921786927.7U Active CN211006369U (en) | 2019-10-23 | 2019-10-23 | Cable-stayed bridge's cable auxiliary stand |
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| CN (1) | CN211006369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629678A (en) * | 2019-10-23 | 2019-12-31 | 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 CN201921786927.7U patent/CN211006369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629678A (en) * | 2019-10-23 | 2019-12-31 | 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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