CN112144382B - Precast beam segment splicing structure and construction method - Google Patents
Precast beam segment splicing structure and construction method Download PDFInfo
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- CN112144382B CN112144382B CN202011133835.6A CN202011133835A CN112144382B CN 112144382 B CN112144382 B CN 112144382B CN 202011133835 A CN202011133835 A CN 202011133835A CN 112144382 B CN112144382 B CN 112144382B
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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
- E01D19/00—Structural or constructional details of bridges
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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
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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Abstract
The invention discloses a precast beam segment splicing structure and a construction method, and belongs to the technical field of precast beam segment installation. The positioning device comprises positioning pins, positioning sleeves, a first splicing unit and a second splicing unit, wherein the first splicing unit comprises a first hinge seat, a first connecting plate and a positioning piece, the second splicing unit comprises a second hinge seat, a second connecting plate and a limiting piece, and the positioning sleeves and the positioning pins are matched to ensure the transverse installation accuracy of the segmental beams and reduce the structural stress at the joints of the segmental beams; simultaneously, the first connecting plate and the second connecting plate respectively rotate relative to the corresponding section beams, so that the positioning piece and the limiting piece are matched to achieve the effect of locking and splicing, the compression/bending resistance between the section beams can be improved, and the mounting precision and the mounting quality are greatly improved.
Description
Technical Field
The invention relates to the technical field of precast beam segment installation, in particular to a precast beam segment splicing structure and a construction method.
Background
At present, in the bridge erection construction process, the length of a bridge is very long, a plurality of segmental beams need to be prefabricated, the length, the width and the weight of the segmental beams are very large, and if an integral prefabricating method is adopted, the existing road and transportation equipment cannot meet the requirements, so that the segmental prefabricating method is usually adopted, and under the condition of segmental and segmental construction, in order to ensure that two adjacent segmental beams can be accurately positioned and spliced in the later tensioning process, the splicing accuracy of the prefabricated beams needs to be ensured. The installation of current precast beam segment mainly carries out the stretch-draw through the steel strand wires, paints the high strength concrete material between the segmental beam through the extrusion and realizes the installation, can't guarantee the precision of installation, and then influences the installation quality of beam segment.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a prefabricated beam segment splicing structure and a construction method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a precast beam segment mosaic structure, includes locating pin, position sleeve, a concatenation unit and two units of concatenation, locating pin and position sleeve looks adaptation and pre-buried both ends at the segmentation roof beam respectively, a concatenation unit is including articulated seat one, connecting plate one and setting element, an articulated seat fixed mounting is at a tip of segmentation roof beam, a connecting plate rotates through the round pin axle and connects on articulated seat one, the setting element is installed to the one end of connecting plate one, two units of concatenation are including articulated seat two, connecting plate two and locating part, two fixed mounting of articulated seat are at another tip of segmentation roof beam, the connecting plate is two to pass through the round pin hub rotation and is connected on articulated seat two, the locating part with the setting element adaptation is installed to the one end of connecting plate two.
Further preferably, the locating part is an internal expanding groove structure, the locating part comprises a locating part extending to the inside of the locating part and a limiting part integrally connected with the locating part, and the limiting part is attached to the inner wall of the locating part.
Further preferably, the positioning portion is provided with a first slope surface and a second slope surface, an inclination angle of the first slope surface relative to the horizontal direction is larger than an inclination angle of the second slope surface relative to the horizontal direction, and the second slope surface is attached to the side wall of the opening of the limiting member.
Further preferably, a through hole is formed in the positioning portion, a connecting bolt is arranged inside the through hole, and the positioning portion is fixedly connected with the limiting piece through the connecting bolt.
Further preferably, the positioning element further includes a moving part slidably disposed inside the limiting element.
Further preferably, through holes are formed in the moving portion and the positioning portion, and the moving portion and the positioning portion are connected through connecting bolts.
Further preferably, the outer side of the locating sleeve is connected with a connecting piece through threads, and the locating pin is provided with an external thread which is matched and connected with the connecting piece.
The invention also discloses a construction method of the precast beam segment splicing structure, which comprises the following steps:
the method comprises the following steps: when the segmental beam is prefabricated, a positioning pin is embedded at one end, a positioning sleeve matched with the positioning pin is embedded at the other end, and the segmental beam is transferred to a construction destination;
step two: firstly, mounting temporary supports on a pier, and mounting a steel truss between the temporary supports, wherein the elevation of the steel truss is the same as the elevation of the top end of each support;
step three: splicing a segment beam on a steel truss, firstly penetrating a steel strand before splicing, installing tensioning equipment, tensioning the steel strand through the tensioning equipment to keep the positioning pin and the positioning sleeve coaxial and enable the ends of the positioning pin and the positioning sleeve to coincide, along with tensioning of the steel strand, enabling the positioning part to enter the limiting part through a first slope surface, finally enabling the limiting part to be attached to the inner wall of the limiting part, enabling a second slope surface to be attached to the side wall of the opening of the limiting part, then fixedly connecting the positioning part with the limiting part through a connecting bolt, sliding the movable part and fixedly connecting the positioning part through the connecting bolt, and finally connecting the positioning pin and the positioning sleeve through a connecting piece;
step four: and then pressurizing and filling high-strength concrete between the two section beams, accurately positioning the beam piece through a hydraulic jack after maintenance is finished, removing the steel truss, and entering the next beam for operation.
Compared with the prior art, the invention has the following beneficial effects:
1. the positioning pin and the positioning sleeve are arranged, so that the transverse installation precision of the segmental beam can be ensured through the matching of the positioning sleeve and the positioning pin, and the structural stress at the joint of the segmental beam can be reduced; simultaneously, the first connecting plate and the second connecting plate respectively rotate relative to the corresponding section beams, so that the positioning piece and the limiting piece are matched to achieve the effect of locking and splicing, the compression/bending resistance between the section beams can be improved, and the mounting precision and the mounting quality are greatly improved.
2. The locating part is of an internal expanding groove structure, the locating part comprises a locating part and a limiting part, the locating part enters the internal expanding groove through rotation of the first connecting plate and the second connecting plate, when the locating part and the internal expanding groove are in a horizontal state, the limiting part and the inner wall of the internal expanding groove are tightly attached to realize matching of the locating part and the locating part, and therefore installation quality is improved. The first slope surface is used for enabling the positioning part to enter the inner expanded groove without obstruction, and the second slope surface is tightly attached to the side wall of the opening of the inner expanded groove when the first connecting plate and the second connecting plate are both in a horizontal state, so that the mounting quality and the straightness after mounting are guaranteed; still be equipped with the removal portion and fill the top of spacing portion, prevent the perk and roll over, removal portion and location portion bolted connection can improve joint strength.
3. The positioning sleeve is provided with the connecting piece, and the connecting piece is combined with the positioning pin, the positioning piece and the limiting piece for use, so that the effects of high-strength connection and high-precision installation are achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a partial enlarged view of FIG. 1 without the moving part mounted at A;
fig. 4 is a partially enlarged view of the positioning element and the limiting element at a position a in fig. 1.
In the figure: 1. positioning pins; 2. a positioning sleeve; 3. a first hinge seat; 4. a first connecting plate; 5. a positioning member; 51. a positioning part; 52. a limiting part; 53. a moving part; 6. a second hinge seat; 7. a second connecting plate; 8. a limiting member; 9. a connecting member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1 to 4, a precast beam segment splicing structure comprises a positioning pin 1, a positioning sleeve 2, a splicing one unit and a splicing two unit, the positioning pin 1 and the positioning sleeve 2 are matched and respectively embedded at two ends of the segmental beam, the splicing unit comprises a hinge seat I3, a connecting plate I4 and a positioning piece 5, the first hinge base 3 is pre-embedded and installed at one end of the sectional beam, the first connecting plate 4 is rotatably connected to the first hinge base 3 through a pin shaft, one end of the first connecting plate 4 is provided with a positioning piece 5, the second splicing unit comprises a second hinge seat 6, a second connecting plate 7 and a limiting piece 8, the two 6 pre-buried another tip of installing at the segmental beam of articulated seat, the two 7 connection boards rotate through the round pin axle and connect on articulated seat two 6, locating part 8 with 5 adaptations of setting element is installed to the one end of connecting board two 7. The positioning sleeve 2 is matched with the positioning pin 1, so that the transverse installation precision of the segmental beam can be ensured, and the structural stress at the joint of the segmental beam can be reduced; when using at first with location sleeve 2 and locating pin 1 coaxial, stretch-draw afterwards runs through the steel strand wires in section roof beam inside, still need simultaneously through swivel connected panel one 4 and connecting plate two 7, after rotatory to horizontal position department, locating part 8 and setting element 5 cooperate comprehensively, location sleeve 2 and locating pin 1 realize cooperating comprehensively reaching the effect of locking concatenation, can also improve the resistance to compression/bending resistance between the section roof beam, improved installation accuracy and installation quality greatly.
In this embodiment, it is further preferable that the limiting member 8 is an internal expanding groove structure, the positioning member 5 includes a positioning portion 51 extending to the inside of the limiting member 8 and a limiting portion 52 integrally connected with the positioning portion 51, and the limiting portion 52 is attached to the inner wall of the limiting member 8. Through the rotation of the first connecting plate 4 and the second connecting plate 7, when the positioning portion 51 enters the inner expanding groove and the inner expanding groove are in a horizontal state, the inner walls of the limiting portion 52 and the inner expanding groove are tightly attached, the matching of the positioning piece 5 and the limiting piece 8 is realized, and the installation quality is further improved.
In this embodiment, it is further preferable that the positioning portion 51 is provided with a first slope surface and a second slope surface, an inclination angle of the first slope surface relative to the horizontal direction is greater than an inclination angle of the second slope surface relative to the horizontal direction, and the second slope surface is attached to the side wall of the opening of the limiting member 8. The first slope surface is used for enabling the positioning portion 51 to enter the inner expanding groove without obstacles, and the second slope surface is tightly attached to the side wall of the opening of the inner expanding groove when the first connecting plate 4 and the second connecting plate 7 are both in a horizontal state, so that the installation quality and the straightness after installation are guaranteed.
In this embodiment, it is further preferable that a through hole is formed in the positioning portion 51, a connecting bolt is disposed inside the through hole, and the positioning portion 51 is fixedly connected to the limiting member 8 through the connecting bolt. Positioning portion 51 and locating part 8 are fixedly connected through connecting bolts, and later period deviation is prevented from occurring, and installation quality is prevented from being influenced.
In this embodiment, it is further preferable that the positioning element 5 further includes a moving portion 53 slidably disposed inside the limiting element 8. The moving part 53 fills the top of the first slope surface on the positioning part 51, so as to ensure the linearity and the matching quality of the positioning part 5 and the limiting part 8.
In this embodiment, it is further preferable that through holes are opened on both the moving portion 53 and the positioning portion 51, and the moving portion 53 and the positioning portion 51 are connected by a connecting bolt. The movable part 53 and the positioning part 51 are fixed by connecting bolts, so that the fixing effect of the movable part 53 is realized, and the splicing quality is improved.
In this embodiment, it is further preferable that the outer side of the positioning sleeve 2 is connected with a connecting member 9 through a thread, and the positioning pin 1 is provided with an external thread matching and connecting with the connecting member 9. Realize fixing positioning sleeve 2 and locating pin 1 through connecting piece 9, realize high strength assembly effect jointly with setting element 5 and locating part 8.
Example 2:
a construction method of a precast beam segment splicing structure comprises the following steps:
the method comprises the following steps: when the segmental beam is prefabricated, a positioning pin 1 is embedded at one end, a positioning sleeve 2 matched with the positioning pin 1 is embedded at the other end, and the segmental beam is transferred to a construction destination;
step two: firstly, mounting temporary supports on a pier, and mounting a steel truss between the temporary supports, wherein the elevation of the steel truss is the same as the elevation of the top end of each support;
step three: splicing a segmental beam on a steel truss, firstly performing strand penetration on a steel strand before splicing, installing tensioning equipment, tensioning the steel strand through the tensioning equipment to keep the positioning pin 1 and the positioning sleeve 2 coaxial and enable the ends of the positioning pin 1 and the positioning sleeve 2 to coincide, along with tensioning of the steel strand, enabling the positioning part 51 to enter the limiting part 8 through a first slope surface, finally enabling the limiting part 52 to be attached to the inner wall of the limiting part 8, enabling a second slope surface to be attached to the side wall of an opening of the limiting part 8, then fixedly connecting the positioning part 51 with the limiting part 8 through a connecting bolt, fixedly connecting the sliding part 53 with the positioning part 51 through a connecting bolt, and finally connecting the positioning pin 1 and the positioning sleeve 2 through a connecting piece 9;
step four: and then pressurizing and filling high-strength concrete between the two section beams, accurately positioning the beam piece through a hydraulic jack after maintenance is finished, removing the steel truss, and entering the next beam for operation.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. The technical solution and the inventive concept thereof according to the present invention should be equally replaced or changed within the protection scope of the present invention.
Claims (5)
1. The precast beam segment splicing structure is characterized by comprising a positioning pin (1), a positioning sleeve (2), a splicing unit and two splicing units, wherein the positioning pin (1) and the positioning sleeve (2) are matched and pre-embedded at two ends of a segment beam respectively, the splicing unit comprises a first hinged seat (3), a first connecting plate (4) and a positioning piece (5), the first hinged seat (3) is fixedly arranged at one end part of the segment beam, the first connecting plate (4) is connected to the first hinged seat (3) in a rotating mode through a pin shaft, the positioning piece (5) is installed at one end of the first connecting plate (4), the two splicing units comprise a second hinged seat (6), a second connecting plate (7) and a limiting piece (8), the second hinged seat (6) is fixedly arranged at the other end part of the segment beam, the second connecting plate (7) is connected to the second hinged seat (6) in a rotating mode through the pin shaft, one end of the second connecting plate (7) is provided with a limiting piece (8) matched with the positioning piece (5); the limiting piece (8) is of an inward-expanding groove structure, the positioning piece (5) comprises a positioning part (51) extending into the limiting piece (8) and a limiting part (52) integrally connected with the positioning part (51), and the limiting part (52) is attached to the inner wall of the limiting piece (8); a first slope surface and a second slope surface are arranged on the positioning part (51), the inclination angle of the first slope surface relative to the horizontal direction is larger than that of the second slope surface relative to the horizontal direction, and the second slope surface is attached to the side wall of the opening of the limiting part (8); the positioning part (51) is provided with a through hole, a connecting bolt is arranged in the through hole, and the positioning part (51) is fixedly connected with the limiting part (8) through the connecting bolt.
2. The precast beam segment splicing structure according to claim 1, wherein the positioning member (5) further comprises a moving portion (53) slidably disposed inside the limiting member (8), and the moving portion (53) fills the top of the first slope surface on the positioning portion (51).
3. The splicing structure of precast beam segments according to claim 2, wherein the moving part (53) and the positioning part (51) are provided with through holes, and the moving part (53) and the positioning part (51) are connected by a connecting bolt.
4. The precast beam segment splicing structure of claim 3, wherein the outer side of the positioning sleeve (2) is connected with a connecting piece (9) through a thread, and the positioning pin (1) is provided with an external thread which is matched and connected with the connecting piece (9).
5. The construction method of the precast beam segment splicing structure according to claim 4, comprising the steps of:
the method comprises the following steps: when the segmental beam is prefabricated, a positioning pin (1) is embedded at one end, a positioning sleeve (2) matched with the positioning pin (1) is embedded at the other end, and the segmental beam is transferred to a construction destination;
step two: firstly, mounting temporary supports on a pier, and mounting a steel truss between the temporary supports, wherein the elevation of the steel truss is the same as the elevation of the top end of each support;
step three: splicing a segmental beam on a steel truss, firstly performing strand penetration on a steel strand before splicing, installing a tensioning device, tensioning the steel strand through the tensioning device to keep the positioning pin (1) and the positioning sleeve (2) coaxial and enable the ends of the positioning pin and the positioning sleeve to coincide, along with tensioning of the steel strand, enabling the positioning part (51) to enter the limiting part (8) through a first slope surface, finally enabling the limiting part (52) to be attached to the inner wall of the limiting part (8), enabling a second slope surface to be attached to the side wall of an opening of the limiting part (8), then fixedly connecting the positioning part (51) with the limiting part (8) through a connecting bolt, enabling the sliding moving part (53) to be fixedly connected with the positioning part (51) through the connecting bolt, and finally connecting the positioning pin (1) and the positioning sleeve (2) through a connecting piece (9);
step four: and then pressurizing and filling high-strength concrete between the two section beams, accurately positioning the beam piece through a hydraulic jack after maintenance is finished, removing the steel truss, and entering the next beam for operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011133835.6A CN112144382B (en) | 2020-10-21 | 2020-10-21 | Precast beam segment splicing structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011133835.6A CN112144382B (en) | 2020-10-21 | 2020-10-21 | Precast beam segment splicing structure and construction method |
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| CN112144382A CN112144382A (en) | 2020-12-29 |
| CN112144382B true CN112144382B (en) | 2022-03-22 |
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| CN113338166B (en) * | 2021-06-17 | 2022-06-10 | 中国十七冶集团有限公司 | Method for fine adjustment during installation of concrete prefabricated T-shaped beam |
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| KR100745401B1 (en) * | 2005-03-04 | 2007-08-02 | 홍석희 | Non-support, non-expension joint and non-abutment slab bridge having synchronized supporting post system, and installing method thereof |
| KR100976847B1 (en) * | 2008-02-18 | 2010-08-20 | (주)써포텍 | Precast concrete deck structure |
| CN109440623B (en) * | 2018-11-20 | 2023-12-08 | 湖南工业大学 | Temporary splicing structure of precast bridge of concrete segment |
| CN109487707A (en) * | 2018-12-28 | 2019-03-19 | 东南大学 | A kind of precast assembly expanded letter box beam and its assembling method |
| CN209669673U (en) * | 2019-01-10 | 2019-11-22 | 宝鸡中铁宝桥天元实业发展有限公司 | Steel box beam erection splicing body |
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