CN216891986U - Quick pull rod device of cable-stay bridge large-section pylon - Google Patents
Quick pull rod device of cable-stay bridge large-section pylon Download PDFInfo
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- CN216891986U CN216891986U CN202123011538.7U CN202123011538U CN216891986U CN 216891986 U CN216891986 U CN 216891986U CN 202123011538 U CN202123011538 U CN 202123011538U CN 216891986 U CN216891986 U CN 216891986U
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Abstract
The utility model provides a quick pull rod device for a large-section tower column of a cable-stayed bridge, which comprises a finish-rolled deformed steel bar pull rod, wherein the finish-rolled deformed steel bar pull rod is fixedly connected with a steel bar pull rod through a connecting sleeve, the steel bar pull rod adopts a steel bar main rib in a steel bar framework, the end head of the steel bar pull rod is turned with a thread, the connecting sleeve is wrapped by a PVC pipe, and one end of the PVC pipe extends out of a through hole preset in a template on the surface of the steel bar framework of concrete to be poured. The utility model connects the thread main reinforcement lathing thread with the finish rolling deformed steel bar through the connecting sleeve to form a pull rod piece, and is configured with devices such as a PVC pipe and the like for anchoring, thereby having the advantages of simple structure, high work efficiency and convenient installation, being beneficial to protecting the concrete surface when the pull rod is dismantled, being easy to control the dismantling process, having smooth surface after the dismantling and being easy to maintain.
Description
Technical Field
The utility model relates to a quick pull rod device for a large-section tower column of a cable-stayed bridge, and belongs to the technical field of reinforcing of tower column templates of cable-stayed bridges.
Background
The short-tower cable-stayed bridge is also called as a partial cable-stayed bridge, is a novel bridge structure form between a continuous beam bridge and a cable-stayed bridge, has the characteristics of both the cable-stayed bridge and the continuous beam bridge, has the characteristics of rigidity and flexibility, and accords with the structural stress characteristics, so the short-tower cable-stayed bridge has the advantages of economy, attractive appearance, high rigidity, convenient construction and the like, has good development potential, and is fully applied to the construction of high-speed railways.
Referring to fig. 4, the lower pylon of the main pylon of the cable-stayed bridge is to bear the self-weight load of the beam body, and the general cross-sectional dimension design is large, which causes the construction of the pull rod to be difficult. The construction mode of traditional template pull rod has two kinds: firstly, the finish-rolled deformed steel bar pull rod embedded in the tower column 9 is adopted, so that after concrete is poured, the finish-rolled deformed steel bar pull rod in the tower column cannot be detached, material loss is wasted, meanwhile, the finish-rolled deformed steel bar pull rod exposed on the surface of the tower column is subjected to oxygen cutting, the quality of the concrete is influenced, the appearance effect is poor, and the follow-up maintenance on the surface of the tower column of the bridge is not facilitated; and secondly, the finish-rolled deformed steel bar is directly welded at the end of the steel bar main body, the extension is used as a pull rod, the defects of waste of the finish-rolled deformed steel bar and high maintenance cost exist, and meanwhile, the welding mode is accompanied by potential safety hazards, so that safety accidents are easily caused.
Disclosure of Invention
In order to solve the defects of the prior art, the utility model provides the quick pull rod device for the large-section tower column of the cable-stayed bridge, which is characterized in that a main threaded reinforcement lathing wire and finish-rolled deformed steel are connected through a connecting sleeve to form a pull rod piece, and devices such as a PVC pipe and the like are arranged for anchoring, so that the quick pull rod device has the advantages of simple structure, high work efficiency and convenience in installation, is beneficial to protecting the concrete surface when the pull rod is detached, is easy to control the detaching process, has a smooth surface after detachment, and is easy to maintain.
The technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides a quick pull rod device of cable-stay bridge large-section pylon, including the finish rolling screw-thread steel pull rod, the finish rolling screw-thread steel pull rod passes through adapter sleeve and reinforcing bar pull rod connection fixed, and the reinforcing bar pull rod adopts the inside reinforcing bar owner muscle of steel framework, and the end car of reinforcing bar pull rod has the screw thread, and adapter sleeve is wrapped up by the PVC pipe, and the one end of PVC pipe is stretched out from the preset through-hole of the template on the steel framework surface of waiting to pour the concrete.
The cylinder wall of the connecting sleeve is provided with a first internal thread section and a second internal thread section, wherein the first internal thread section is matched with the external thread of the steel bar pull rod, and the second internal thread section is matched with the external thread of the finish rolling screw thread steel pull rod.
And a base plate and a nut are sleeved on the finish-rolled deformed steel bar.
The nut adopts double nuts.
Gaps among the PVC pipes, the template and the finish rolling deformed steel bar pull rod are respectively covered and sealed by adhesive tapes.
The length of the screw head of the steel bar pull rod is 50-55 mm.
The length of the PVC pipe is not less than 15 cm.
If the template at the position where the PVC pipe extends out is provided with the back ridge, the backing plate and the back ridge are screwed through the nut.
The utility model has the beneficial effects based on the technical scheme that:
(1) according to the quick pull rod device for the large-section tower column of the cable-stayed bridge, provided by the utility model, the main reinforcement of the steel bar in the steel bar frame to be poured with concrete is used as the steel bar pull rod, the end of the steel bar pull rod is turned with threads, and the steel bar pull rod and the finish-rolled threaded steel pull rod are connected through the connecting sleeve to form the pull rod piece, so that the problem of arrangement of the pull rod of a large-section concrete structure is solved, and the construction safety is ensured;
(2) the quick pull rod device for the large-section tower column of the cable-stayed bridge, which is provided by the utility model, adopts the PVC pipe to wrap the connecting sleeve, adopts the adhesive tape to seal tightly, avoids the contact between the connecting sleeve and the finish-rolled deformed steel pull rod and concrete, is convenient to disassemble, circulate and use, and solves the problems that the traditional pull rod cannot be disassembled and causes material loss and waste; meanwhile, the procedure that oxygen is cut and exposed on the surface of the tower column to expose the pull rod is omitted, the PVC pipe is easy to cut off, the reserved hole is easy to plug, the surface is flat and solid after plugging, and the follow-up bridge maintenance is facilitated.
Drawings
Fig. 1 is a schematic structural view of a large-section pylon quick pull rod device of a cable-stayed bridge.
Fig. 2 is a schematic view of the construction of the coupling sleeve.
Fig. 3 is a schematic structural view of a tie member formed by connecting a steel bar tie rod, a finish-rolled deformed steel bar tie rod and a connecting sleeve.
Fig. 4 is a structural schematic diagram of a large-section tower column steel reinforcement frame.
In the figure, 1-finish rolling screw steel pull rod, 2-connecting sleeve, 2 a-first internal thread section, 2 b-second internal thread section, 3-steel bar pull rod, 4-PVC pipe, 5-nut, 6-backing plate, 7-template, 8-back ridge and 9-tower column.
Detailed Description
The utility model is further illustrated by the following figures and examples.
The utility model provides a large-section tower column quick pull rod device of a cable-stayed bridge, which comprises a finish-rolled deformed steel bar pull rod 1, wherein the finish-rolled deformed steel bar pull rod is fixedly connected with a steel bar pull rod 3 through a connecting sleeve 2, the steel bar pull rod adopts a steel bar main reinforcement inside a steel bar framework, the end head of the steel bar pull rod is turned with a thread, the connecting sleeve is wrapped by a PVC pipe 4, and one end of the PVC pipe extends out of a through hole preset in a template 7 on the surface of the steel bar framework of concrete to be poured.
The cylinder wall of the connecting sleeve is provided with a first internal thread section 2a and a second internal thread section 2b, wherein the first internal thread section is matched with the external thread of the steel bar pull rod, and the second internal thread section is matched with the external thread of the finish-rolled threaded steel pull rod.
The finish rolling screw-thread steel pull rod is sleeved with a base plate 6 and a nut 5, and the nut can adopt double nuts. Gaps among the PVC pipes, the template and the finish rolling deformed steel bar pull rod are respectively covered and sealed through adhesive tapes.
The length of the screw head of the steel bar pull rod is 50-55 mm.
The length of the PVC pipe is not less than 15 cm.
If the template at the position where the PVC pipe extends out is provided with the back ridge 8, the backing plate and the back ridge are screwed tightly through the nut.
The process of utilizing the rapid pull rod device for the large-section tower column of the cable-stayed bridge to construct the pull rod comprises the following steps:
(1) firstly, sampling a tensile member consisting of a steel bar pull rod, a connecting sleeve and a finish rolling deformed steel bar pull rod which are connected with each other, carrying out a technological test, and carrying out subsequent construction after verifying that the tensile member meets the construction stress requirement. The method comprises the steps of selecting a main reinforcing steel bar inside a reinforcing steel bar frame to be poured with concrete as a reinforcing steel bar pull rod, and performing thread turning treatment on the end of the reinforcing steel bar pull rod by using a reinforcing steel bar straight thread rib stripping thread rolling machine, wherein the length of a thread head is 50-55 mm.
(2) The passing length is 100mm,
The connecting sleeve connects the end of the steel bar main reinforcement pull rod with the finish rolling deformed steel bar pull rod, and the length of the connecting sleeve screwed into the steel bar pull rod is 5 cm. The wall of the threaded sleeve is provided with a first internal thread section and a second internal thread section, wherein the first internal thread section is matched with the external thread of the steel bar pull rod, and the second internal thread section is matched with the external thread of the finish rolling threaded steel pull rod. In the process, the straightness of the steel bar pull rod and the finish rolling deformed steel bar pull rod is adjusted to ensure that the finish rolling deformed steel bar pull rod is positioned on the inner side of the steel bar frame, and the connecting sleeve is exposed out of the steelThe length of the rib frame is 3-5 cm.
(3) The length is not less than 15cm,
The PVC pipe embolia from finish rolling deformed steel bar pull rod one end, until the PVC pipe with the one end complete parcel that the connecting sleeve is located the reinforcing bar owner muscle, finish rolling deformed steel bar pull rod one end parcel 3 ~ 5cm, and the PVC pipe stretches out the template on reinforcing bar frame surface. Sequentially mounting a base plate and a nut on the finish-rolled deformed steel bar pull rod and screwing; and after the concrete is poured, taking the nut and the base plate out of the finish-rolled deformed steel bar in sequence, and screwing out the finish-rolled deformed steel bar from the connecting sleeve. If the template at the position where the PVC pipe extends out is provided with the back ridge, the backing plate and the back ridge are screwed through the nut. The nut can adopt double nuts, and the strength is improved.
(4) Gaps between the PVC pipe and the template and between the PVC pipe and the finish rolling deformed steel bar pull rod are tightly sealed by the adhesive tape, so that cement paste can not enter the PVC pipe when concrete is poured.
(5) After the concrete pouring is finished and the formwork stripping condition is met, screwing out the finish-rolled deformed steel bar pull rod from the connecting sleeve;
(6) removing the PVC pipe outside the concrete surface until the connecting sleeve is exposed, and screwing the connecting sleeve out of the PVC pipe;
(7) special cement is adopted to plug the pull rod hole, the cement is fully filled during plugging, and finally the surface of the concrete is leveled to finish construction.
According to the quick pull rod device for the large-section tower column of the cable-stayed bridge, provided by the utility model, the main reinforcements of the steel bar frame are processed into the threaded main reinforcement lathing wires, the threaded main reinforcement lathing wires and the finish-rolled threaded steel are connected through the connecting sleeve to form the pull rod piece, and the pull rod piece is anchored by arranging devices such as a PVC pipe and the like.
Claims (8)
1. The utility model provides a quick pull rod device of cable-stay bridge large-section pylon, includes finish rolling screw-thread steel pull rod, its characterized in that: the finish rolling screw-thread steel pull rod passes through the connecting sleeve to be connected fixedly with the reinforcing bar pull rod, and the reinforcing bar pull rod adopts the inside reinforcing bar owner muscle of steel framework, and the end car of reinforcing bar pull rod has the screw thread, and the connecting sleeve is managed the parcel by PVC, and the one end of PVC pipe is stretched out from the through-hole that the template on the steel framework surface of waiting to pour the concrete is preset.
2. The cable-stayed bridge large-section tower column quick pull rod device as claimed in claim 1, wherein: the cylinder wall of the connecting sleeve is provided with a first internal thread section and a second internal thread section, wherein the first internal thread section is matched with the external thread of the steel bar pull rod, and the second internal thread section is matched with the external thread of the finish rolling screw thread steel pull rod.
3. The cable-stayed bridge large-section tower column quick pull rod device as claimed in claim 1, wherein: and a base plate and a nut are sleeved on the finish-rolled deformed steel bar.
4. The cable-stayed bridge large-section tower column quick pull rod device as claimed in claim 3, wherein: the nut adopts double nuts.
5. The cable-stayed bridge large-section tower column quick pull rod device as claimed in claim 1, wherein: gaps among the PVC pipes, the template and the finish rolling deformed steel bar pull rod are respectively covered and sealed by adhesive tapes.
6. The cable-stayed bridge large-section tower column quick pull rod device as claimed in claim 1, wherein: the length of the screw head of the steel bar pull rod is 50-55 mm.
7. The cable-stayed bridge large-section tower column quick pull rod device as claimed in claim 1, wherein: the length of the PVC pipe is not less than 15 cm.
8. The cable-stayed bridge large-section tower column quick pull rod device as claimed in claim 1, wherein: if the template at the position where the PVC pipe extends out is provided with the back ridge, the backing plate and the back ridge are screwed through the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123011538.7U CN216891986U (en) | 2021-12-02 | 2021-12-02 | Quick pull rod device of cable-stay bridge large-section pylon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123011538.7U CN216891986U (en) | 2021-12-02 | 2021-12-02 | Quick pull rod device of cable-stay bridge large-section pylon |
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| Publication Number | Publication Date |
|---|---|
| CN216891986U true CN216891986U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123011538.7U Active CN216891986U (en) | 2021-12-02 | 2021-12-02 | Quick pull rod device of cable-stay bridge large-section pylon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232452A (en) * | 2021-12-02 | 2022-03-25 | 中铁十一局集团有限公司 | Construction method and device for quick pull rod of large-section tower column of cable-stayed bridge |
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2021
- 2021-12-02 CN CN202123011538.7U patent/CN216891986U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232452A (en) * | 2021-12-02 | 2022-03-25 | 中铁十一局集团有限公司 | Construction method and device for quick pull rod of large-section tower column of cable-stayed bridge |
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