CN113846572B - Holding system for bridge capping beam construction and construction method - Google Patents
Holding system for bridge capping beam construction and construction method Download PDFInfo
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- CN113846572B CN113846572B CN202111328528.8A CN202111328528A CN113846572B CN 113846572 B CN113846572 B CN 113846572B CN 202111328528 A CN202111328528 A CN 202111328528A CN 113846572 B CN113846572 B CN 113846572B
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- 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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Abstract
The invention discloses a holding system for bridge capping beam construction and a construction method thereof, wherein the holding system consists of a hoop, a force transmission cylinder and a bearing system; the anchor ear is formed by connecting each vertical rod in series by a steel strand, and each vertical rod vertically props against the outer side wall of the column body, and an annular anchor ear with a corresponding shape on the outer side wall of the column body is formed according to the cross section shape of the column body; the force transmission cylinder is provided with a cylinder body positioned at the periphery of the annular hoop, a triangular inner support is arranged between the cylinder body and the vertical rod, and the length of a horizontal rod and the length of a bevel edge rod in the triangular inner support are adjustable; the bearing system is characterized in that a triangular outer support is arranged on the outer side wall of a cylinder body, a rectangular bearing frame is arranged on the triangular outer support, longitudinal beams and cross beams are sequentially erected on the rectangular bearing frame, and a template is poured by using the cross beams to pave a cover beam. The method fills the blank that the anchor ear method cannot be used for the special-shaped column in the field of civil engineering, can be widely applied to the construction of bridges, high-pile wharfs, pile anchor ear type concrete bearing platform tower cranes and the like, and has wide application prospect.
Description
Technical Field
The invention belongs to the technical field of reinforced concrete bridge construction, and particularly relates to a holding system and a construction method for bridge capping beam construction.
Background
The common supporting method during the construction of the reinforced concrete bridge capping beam comprises a full framing method, a reserved hole penetrating round steel method, pre-embedded section steel Niu Tuifa, an anchor ear method and the like, wherein the anchor ear method has the advantages of being good in economy, free from limitation of foundation conditions, pier height and construction environment, free from influence on the internal structure and the appearance quality of a pier column, multiple in material turnover frequency, high in construction efficiency due to the simple operation method, easy to guarantee construction quality, good in safety due to the simple stress structure and the like, and is more and more widely applied to engineering. However, the anchor ear method has the fatal defect that the anchor ear method is only suitable for pier columns with circular cross sections, the current domestic and foreign engineering practice is only suitable for pier columns with circular cross sections, and for square pier columns or other pier columns with non-circular cross sections, if a steel anchor ear is adopted, because the distribution of horizontal stress on the anchor ear is uneven, the locking is not tight and the locking is not dead, so that potential safety hazards are brought to construction; heretofore, there has been no published report of a hoop system for piers having a non-circular cross-section.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the holding system and the construction method for the bridge capping beam construction, which can be suitable for pier columns with various cross-sectional shapes, and exerts the advantages of economical efficiency and high efficiency of the hoop structure.
The invention adopts the following technical scheme for solving the technical problems:
the invention discloses a holding system for bridge capping beam construction, which is characterized in that: comprises a hoop, a force transmission cylinder and a bearing system;
the anchor ear is characterized in that each vertical rod is connected in series by a steel strand, each vertical rod vertically abuts against the outer side wall of the column body, an annular anchor ear with a corresponding shape on the outer side wall of the column body is formed according to the cross section shape of the column body, the upper part of each vertical rod is provided with an upper ear plate, and the lower part of each vertical rod is provided with a lower ear plate;
the force transmission cylinder is provided with a cylinder body which is arranged at the periphery of the annular hoop, a triangular inner support is arranged between the cylinder body and each vertical rod, the outer end of a horizontal rod in the triangular inner support is fixedly connected with the cylinder body, and the inner end of the horizontal rod is hinged with an upper ear plate in the vertical rod; the upper end of a bevel edge rod in the triangular inner support is fixedly connected with the cylinder body, and the lower end of the bevel edge rod is hinged with a lower ear plate in the vertical rod; the lengths of the horizontal rod and the bevel edge rod are adjustable;
the bearing system is characterized in that four triangular outer supports are arranged on the outer side wall of the cylinder in a cross manner, a rectangular bearing frame is arranged on the four triangular outer supports, longitudinal beams are erected on the rectangular bearing frame, cross beams are erected on the longitudinal beams, and the cross beams are utilized to erect an upper operating platform.
The holding system for bridge capping beam construction is also characterized in that: an upper layer through hole and a lower layer through hole are distributed on the cylinder body along the circumference of the cylinder body, the outer end of the horizontal rod is provided with a bolt rod, and the bolt rod is fixed in the upper layer through hole at the corresponding position by utilizing a nut; the upper end of the oblique side rod is provided with a bolt rod and is fixed in the lower layer through hole at the corresponding position by a nut; the thread fit of the adjusting nut and the bolt rod is used for adjusting the lengths of the horizontal rod and the bevel rod.
The holding system for bridge capping beam construction is also characterized in that: the cylinder body is formed by encircling two semi-cylinders, end plates are respectively arranged at the end parts of the two semi-cylinders, and the two semi-cylinders are fixedly connected by utilizing through holes and bolts in the end plates; the rectangular bearing frame is formed by two half frames in a surrounding mode.
The holding system for bridge capping beam construction is also characterized in that: the outer side wall of each vertical rod is provided with a horizontal clamping groove, and the steel strands which are used for being connected with the vertical rods in series are embedded into the horizontal clamping grooves of the vertical rods.
The construction method of the holding system for bridge capping beam construction is characterized by comprising the following steps of:
step 1, connecting each vertical rod to a cylinder body which is divided into two semicylinders by using a horizontal rod and a bevel rod;
and 8, paving a cover beam pouring template on the cross beam.
Compared with the prior art, the invention has the beneficial effects that:
the anchor ear method construction has the advantages of good economy, no limitation of foundation conditions, pier height and construction environment, no influence on the internal structure and the appearance quality of the pier, multiple material turnover times, high construction efficiency due to simple operation method, easy guarantee of construction quality, good safety due to simple stress structure and the like, and is more and more widely applied to engineering. However, the anchor ear method in the prior art has the fatal defect that the anchor ear method is only suitable for the pier stud with the circular cross section, and when the anchor ear method is used on the pier stud with the non-circular cross section, because the distribution of the received hoop stress is uneven, the friction coefficient between the anchor ear and the pier stud is distributed in the hoop direction with a large difference, so that on one hand, the load which can be borne by the bracket is not high, and on the other hand, the value of the friction coefficient is difficult to grasp when the anchor ear is designed, and therefore the anchor ear slipping accident is easy to occur in the construction process. The invention initiatively provides a holding system and a construction process, which not only have the advantages of the anchor ear method construction, but also can be suitable for columns with various cross-sectional shapes, make up for the inherent defect that the anchor ear method cannot be used for columns with non-circular cross-sections, and can be widely applied to the construction fields of bridges, high-pile wharfs and the like, thereby having good economic benefit and social benefit.
Drawings
FIG. 1 is a schematic structural diagram of a hoop system according to the present invention;
FIG. 2a is a front view of a vertical rod of the present invention;
FIG. 2b is a side view of a vertical post according to the present invention;
FIG. 3a is a top view of the fitting structure of the cylinder, the horizontal inner rod, the inclined inner rod and the triangular supports;
FIG. 3b is a front view of the fitting structure of the frame tube, the horizontal inner rod, the inclined inner rod and the triangular supports;
reference numbers in the figures: 1, a column body; 2, erecting a rod; 3, a cylinder body; 4, horizontal rods; 5, a bevel edge rod; 6, supporting the triangular outer support; 7, a rectangular bearing frame; 8 longitudinal beams; 9, a cross beam; 10, an upper ear plate; 11 a lower ear plate; 12 horizontal card slots; 13 end plates; 14 bolt holes; 15 an external nut; 16 inner nut.
Detailed Description
Referring to fig. 1, the clasping system for construction of the bridge Liang Gailiang in this embodiment is composed of an anchor ear, a force transmission cylinder and a bearing system.
As shown in fig. 1, 2a and 2b, the anchor ear is formed by connecting the vertical rods 2 in series by steel strands, making the vertical rods 2 vertically abut against the outer side wall of the column body to form post-attaching rods, forming an annular anchor ear with a corresponding shape on the outer side wall of the column body according to the cross-sectional shape of the column body 1, arranging upper ear plates 10 on the upper parts of the vertical rods 2, and arranging lower ear plates 11 on the lower parts of the vertical rods 2.
As shown in fig. 1, fig. 3a and fig. 3b, the force transfer cylinder is provided with a cylinder 3 positioned at the periphery of the annular hoop, a triangular inner support is arranged between the cylinder 3 and each vertical rod 2, the outer end of a horizontal rod 4 in the triangular inner support is fixedly connected with the cylinder 3, and the inner end of the horizontal rod 4 is hinged with an upper ear plate 10 in the vertical rod 2; the upper end of a bevel edge rod 5 in the triangular inner support is fixedly connected with the cylinder 3, and the lower end of the bevel edge rod 5 is hinged with a lower ear plate 11 in the vertical rod; the horizontal rod 4 and the bevel edge rod 5 are adjustable in length.
In fig. 1, the bearing system is shown in the form that four triangular outer supports 6 are arranged on the outer side wall of the cylinder 3 in a cross shape, a rectangular bearing frame 7 is arranged on the four triangular outer supports 6, longitudinal beams 8 are arranged on the rectangular bearing frame 7, cross beams 9 are arranged on the longitudinal beams 8, and an upper operating platform is arranged by the cross beams 9.
In specific implementation, the corresponding technical measures also include:
as shown in fig. 3a and b, an upper layer through hole and a lower layer through hole are distributed on the cylinder 3 along the circumference of the cylinder 3, the outer end of the horizontal rod 4 is provided with a bolt rod, and is fixed in the upper layer through hole at the corresponding position by a nut; the upper end of the oblique side rod 5 is provided with a bolt rod and is fixed in the lower layer through hole at the corresponding position by a nut; the screw thread matching of the adjusting nut and the bolt rod is used for adjusting the length of the horizontal rod 4 and the length of the bevel edge rod 5; the cylinder 3 is formed by two half cylinders, end plates 13 are respectively arranged at the ends of the two half cylinders, bolt holes 14 are arranged on the end plates 13, and the end plates 13 realize the fixed connection of the two half cylinders by utilizing through bolt holes and bolts.
The rectangular bearing frame 7 shown in fig. 1 is formed by two half frames in a surrounding manner so as to be convenient to install.
As shown in fig. 2b, a horizontal slot 12 is provided on the outer side wall of the vertical rod 2, and the steel strand for connecting the vertical rods 2 in series is embedded in the horizontal slot 12 of each vertical rod 2; in order to form the horizontal slot 12, a bump is welded on the corresponding position of the vertical rod 2, and the horizontal slot 12 is formed between the two bumps.
The construction of the holding system for the bridge capping beam construction in the embodiment is carried out according to the following steps:
step 1, designing a high-rise determined holding system position according to a bent cap bottom template, and marking a mark line on a column body according to the top surface of a post rod;
and 9, paving a cover beam pouring template on the cross beam 9.
Construction load transfer path: the construction load is transmitted by the cross beam, the longitudinal beam, the bearing frame, the triangular outer support, the cylinder, the horizontal rod, the inclined side rod and the vertical rod in sequence, and finally the balance of force is formed by the friction force between the vertical rod and the cylinder.
The method fills the blank that the anchor ear method cannot be used for the special-shaped column in the field of civil engineering, can be widely applied to the construction of bridges, high-pile wharfs, pile anchor ear type concrete bearing platform tower cranes and the like, and has wide application prospect.
Claims (5)
1. The utility model provides a bridge bent cap construction is with holding system tightly, characterized by: comprises a hoop, a force transmission cylinder and a bearing system;
the anchor ear is characterized in that each vertical rod (2) is connected in series by a steel strand, each vertical rod (2) vertically abuts against the outer side wall of the column body, an annular anchor ear with a corresponding shape on the outer side wall of the column body is formed according to the cross-sectional shape of the column body, the upper part of each vertical rod (2) is provided with an upper ear plate (10), and the lower part of each vertical rod (2) is provided with a lower ear plate (11);
the force transmission cylinder is provided with a cylinder body (3) arranged at the periphery of the annular hoop, a triangular inner support is arranged between the cylinder body (3) and each vertical rod (2), the outer end of a horizontal rod (4) in the triangular inner support is fixedly connected with the cylinder body (3), and the inner end of the horizontal rod (4) is hinged with an upper ear plate (10) in each vertical rod; the upper end of a bevel edge rod (5) in the triangular inner support is fixedly connected with the cylinder body (3), and the lower end of the bevel edge rod (5) is hinged with a lower ear plate (11) in the vertical rod; the horizontal rod (4) and the bevel edge rod (5) are adjustable in length;
the bearing system is characterized in that four triangular outer supports (6) are arranged on the outer side wall of the cylinder (3) in a cross mode, a rectangular bearing frame (7) is arranged on the four triangular outer supports (6), a longitudinal beam (8) is erected on the rectangular bearing frame (7), a cross beam (9) is erected on the longitudinal beam (8), and an upper operating platform is erected on the cross beam (9).
2. The clasping system for bridge capping beam construction as claimed in claim 1, wherein: an upper layer through hole and a lower layer through hole are distributed on the cylinder body (3) along the circumference of the cylinder body (3), the outer end of the horizontal rod (4) is provided with a bolt rod, and the bolt rod is fixed in the upper layer through hole at the corresponding position by utilizing a nut; the upper end of the oblique side rod (5) is provided with a bolt rod and is fixed in the lower layer through hole at the corresponding position by a nut; the threaded matching of the adjusting nut and the bolt rod is used for adjusting the length of the horizontal rod (4) and the length of the bevel edge rod (5).
3. The clasping system for bridge capping beam construction as claimed in claim 1 or 2, wherein: the cylinder body (3) is formed by encircling two semi-cylinders, end plates (13) are respectively arranged at the end parts of the two semi-cylinders, and the two semi-cylinders are fixedly connected by using bolt holes and bolts in the end plates (13); the rectangular bearing frame (7) is formed by two half frames in a surrounding mode.
4. The clasping system for bridge capping beam construction as claimed in claim 1, wherein: the outer side wall of each vertical rod (2) is provided with a horizontal clamping groove (12) for embedding the steel strand of each vertical rod (2) in the horizontal clamping groove (12) of each vertical rod (2).
5. The construction method of the holding system for bridge capping beam construction according to claim 1 is characterized by comprising the following steps:
step 1, connecting each vertical rod (2) to a cylinder body (3) which is divided into two semicylinders by using a horizontal rod (4) and a bevel edge rod (5);
step 2, folding the two semi-cylinders connected with the vertical rods (2) on the cylinder from two sides, butting the two semi-cylinders to form a complete cylinder body (3), and encircling the cylinder body by the vertical rods (2);
step 3, adjusting the lengths of the horizontal rod (4) and the bevel edge rod (5) to enable each vertical rod (2) to vertically abut against the outer side wall of the column body;
step 4, hooping and locking the vertical rods (2) by steel strands to form an annular hoop on the column body;
step 5, folding the bearing frame (7) which is split into two half frames on the column body from two sides, and then butting the two half frames to form a complete rectangular bearing frame (7);
step 6, fixedly mounting the rectangular bearing frame (7) on the triangular outer support (6) by using bolts;
step 7, fixedly erecting longitudinal beams (8) and cross beams (9) on the rectangular bearing frame (7) in sequence by using bolts;
and 8, paving a cover beam pouring template on the cross beam (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328528.8A CN113846572B (en) | 2021-11-10 | 2021-11-10 | Holding system for bridge capping beam construction and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328528.8A CN113846572B (en) | 2021-11-10 | 2021-11-10 | Holding system for bridge capping beam construction and construction method |
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| Publication Number | Publication Date |
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| CN113846572A CN113846572A (en) | 2021-12-28 |
| CN113846572B true CN113846572B (en) | 2023-03-24 |
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| CN202111328528.8A Active CN113846572B (en) | 2021-11-10 | 2021-11-10 | Holding system for bridge capping beam construction and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115162697B (en) * | 2022-06-23 | 2024-01-23 | 中建四局第三建设有限公司 | Special-shaped column construction work I-shaped steel cantilever platform and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU427124A1 (en) * | 1972-11-04 | 1974-05-05 | В. Г. Иванов, М. С. Урбант, Ю. А. Чудновский , К. Г. Плакхин | MOUNTING ADAPTATION FOR THE FORMING OF THE FORMWORK WHILE REMATING THE RUGEL WITH RESISTANCE |
| CN2873867Y (en) * | 2006-02-10 | 2007-02-28 | 路桥集团第一公路工程局 | Pier column hoop device |
| CN109518595B (en) * | 2018-12-10 | 2023-09-22 | 中交第二航务工程局有限公司 | Assembled hoop bracket suitable for special-shaped piers and method for constructing bent cap by utilizing same |
| CN211256694U (en) * | 2019-11-06 | 2020-08-14 | 湖州市交通工程建设集团有限公司 | Pier column hoop device for bridge bent cap construction |
| CN213476644U (en) * | 2020-09-17 | 2021-06-18 | 成都利方致远路桥工程有限公司 | Pier bent cap hooping steel beam template system |
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