CN110080093B - Assembled pier and construction method thereof - Google Patents
Assembled pier and construction method thereof Download PDFInfo
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- CN110080093B CN110080093B CN201910506167.8A CN201910506167A CN110080093B CN 110080093 B CN110080093 B CN 110080093B CN 201910506167 A CN201910506167 A CN 201910506167A CN 110080093 B CN110080093 B CN 110080093B
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- pier
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- pipeline
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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 an assembled pier and a construction method thereof, wherein the pier comprises a pier body and energy-consuming steel bars arranged in the pier body along the axial direction of the pier body, the pier body is formed by sequentially assembling a plurality of sections from bottom to top, the sections comprise section bodies, the side walls of the section bodies are provided with holes and cast-in-place parts of the sections are formed by cast-in-place, the energy-consuming steel bars sequentially penetrate through the sections along the axial direction of the pier body, and the energy-consuming steel bars are respectively in clearance connection with the section bodies and are integrally cast with the cast-in-place parts of the sections. The free section of the energy-consuming reinforcing steel bar arranged in the pier is discontinuous, so that the telescopic amount of the energy-consuming reinforcing steel bar in the axial direction can be increased, and the fixing mode of the energy-consuming reinforcing steel bar in the axial direction of the pier is also discontinuous, so that the energy-consuming effect of the energy-consuming reinforcing steel bar in the radial direction is not influenced, the energy-consuming effect of the energy-consuming reinforcing steel bar in the axial direction and the radial direction can be fully exerted, the energy consumption is stable, and the effect is better.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to an assembled pier and a construction method thereof.
Background
The pier assembled by the dry joint sections has the advantage of quick construction and self-resetting capability, and is applied to some river-crossing and sea-crossing bridges including a HongZhu-Auao bridge and a Canada federal bridge. The pier body of the pier is vertically divided into a plurality of sections, the longitudinal stress steel bars are disconnected at the joints of the sections, the sections are connected by adopting dry joints, or the joints are filled with epoxy resin to improve the durability of the pier, and then the sections are connected into a whole by adopting a post-tensioned prestressing mode. Through experiments and theoretical researches, domestic and foreign scholars find that the dry joint section assembled pier has poor energy consumption capability under seismic excitation and is easy to crush at the bottom section. In order to improve the energy consumption capability of a pier assembled by dry joint sections, the most used method in engineering practice and scientific research at present is to embed energy consumption reinforcing steel bars in the pier assembled by the dry joint sections, wherein the energy consumption reinforcing steel bars are used for consuming energy on shearing force between joints of the sections when earthquake excitation occurs, but the energy generated when the earthquake occurs is in multiple directions, the axial direction of the pier is still obvious, and the existing energy consumption reinforcing steel bars are simultaneously poured with the sections, so that the energy consumption reinforcing steel bars are fixed in the axial direction of the pier, do not have telescopic spaces, have poor axial energy consumption capability and basically no energy consumption effect, even when the energy consumption reinforcing steel bars are excited by the earthquake in the axial direction, can perform an irreversible damage effect on the interior of the sections due to the fixed connection between the energy consumption reinforcing steel bars and the sections, and are difficult to replace. If the rest energy consumption devices are added, the manufacturing cost of the bridge pier is increased, and the structure of the bridge pier is greatly influenced and cannot be compensated.
Disclosure of Invention
In view of the above, the present invention provides an assembled pier and a construction method thereof, which can increase the axial telescopic amount of energy dissipation steel bars, fully exert the energy dissipation effect of the energy dissipation steel bars in the axial and radial directions, and have stable energy dissipation and better effect.
The utility model provides an assembled pier, includes the pier body and sets up at this internal power consumption reinforcing bar of pier along the axial of pier body, the pier body is by a plurality of segments from supreme assembling in proper order down and forms, the segment includes the segment body, the lateral wall trompil of segment body forms the cast-in-place portion of segment through the cast-in-place, power consumption reinforcing bar passes along the axial of pier body in proper order a plurality of segments, power consumption reinforcing bar respectively with segment body gap connects and pours with the cast-in-place portion an organic whole of segment.
Furthermore, energy-consuming reinforcing steel bar holes are formed in the segment bodies, and gaps are formed between the energy-consuming reinforcing steel bars and the inner walls of the energy-consuming reinforcing steel bar holes in a radial direction.
Furthermore, the upper end and the lower end of the segment body are both provided with the energy consumption reinforcing steel bar holes, the energy consumption reinforcing steel bar holes at the two ends are positioned on the same axis, the axis penetrates through the cast-in-place part, and the energy consumption reinforcing steel bar holes on the segments are respectively matched with the energy consumption reinforcing steel bar holes of the adjacent segments positioned at the same end.
Further, a pipe is pre-buried in the segment body to form the energy dissipating rebar hole.
Further, an annular gasket is arranged at the pipe orifice of one end of the pipeline, which is positioned at the outer side of the pipeline.
Further, the inner walls of the two ends of the pipeline protrude inwards in the radial direction to form a step for positioning when the annular gasket is installed, a central hole for the energy consumption steel bar to pass through is formed in the middle of the annular gasket, and when one end face of the annular gasket is positioned through the step, the other end face of the annular gasket is flush with the end face of the pipeline.
Further, the pipeline is made of plastic materials and comprises a first segment and a second segment, the first segment and the second segment are semi-arc pieces symmetrically arranged, so that the first segment and the second segment are mutually matched to form a complete pipeline, and the first segment and the second segment are mutually fixedly connected through annular gaskets.
Further, the first segment and the second segment are both formed by a plurality of segment dividing segments, and the segment dividing segments are respectively arranged along the length direction of the pipeline to form the first segment and the second segment.
Furthermore, the energy consumption reinforcing steel bars are at least two and are uniformly distributed along the circumferential direction of the pier body.
The construction method of the assembled pier adopts any one of the assembled piers, firstly, all the sections are prefabricated and molded in a factory, the first section is fixedly installed on a bearing platform, then all the sections are sequentially assembled upwards, energy dissipation steel bar holes among all the sections are positioned on the same straight line and are fixed with all the sections, the whole energy dissipation steel bar penetrates through the energy dissipation steel bar holes of all the sections, and the energy dissipation steel bar is fixedly connected with the section bodies of all the sections respectively by pouring cast-in-place parts on the section bodies, so that the fixed connection mode of the energy dissipation steel bar and the pier body in the axial direction is discontinuous.
The invention has the beneficial effects that: according to the pier, the energy dissipation steel bars sequentially penetrate through the sections along the axial direction of the pier body, the energy dissipation steel bars are respectively in clearance connection with the section body and are integrally cast with the cast-in-place parts of the sections, so that the fixed connection sections of the energy dissipation steel bars arranged in the pier are discontinuous, the free sections are arranged between every two adjacent fixed connection sections, the telescopic amount of the energy dissipation steel bars in the axial direction can be increased, the fixing mode of the energy dissipation steel bars in the axial direction of the pier is also discontinuous, and the two ends of each free section are fixed through the cast-in-place parts of the section body, so that the energy dissipation effect of the energy dissipation steel bars in the radial direction is not influenced, the energy dissipation effect of the energy dissipation steel bars in the axial direction and the radial direction can be fully exerted.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic structural view of a bridge pier according to the present invention;
fig. 2 is a schematic structural view of a segment of the present invention.
FIG. 3 is a schematic view of the structure of the pipeline;
fig. 4 is a schematic diagram of the pipeline and the energy-consuming steel bar 2.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a pier according to the present invention, and fig. 2 is a schematic structural view of a segment according to the present invention. The invention relates to an assembled pier which comprises a pier body and energy-consuming steel bars 2 arranged in the pier body along the axial direction of the pier body, wherein the pier body is formed by sequentially assembling a plurality of sections 1 from bottom to top, 4 is a central support column, each section 1 comprises a section body 101, openings 9 are formed in the side wall of each section body 101, cast-in-place portions 102 of the sections 1 are formed through cast-in-place, the energy-consuming steel bars 2 sequentially penetrate through the sections 1 along the axial direction of the pier body, and the energy-consuming steel bars 2 are respectively in clearance connection with the section bodies 101 and are integrally cast with the cast-in-place portions 102 of the sections 1.
According to the pier, the energy dissipation steel bars 2 sequentially penetrate through the sections 1 along the axial direction of the pier body, the energy dissipation steel bars 2 are respectively in clearance connection with the section body 101 and integrally cast with the cast-in-place parts 102 of the sections 1, so that the fixed connection sections of the energy dissipation steel bars 2 arranged in the pier are discontinuous, and a free section is arranged between every two adjacent fixed connection sections, so that the telescopic amount of the energy dissipation steel bars 2 in the axial direction can be increased, the fixing mode of the energy dissipation steel bars 2 in the axial direction of the pier is also discontinuous, and two ends of each free section are fixed through the cast-in-place parts on the section body, so that the energy dissipation effect of the energy dissipation steel bars 2 in the radial direction is not influenced, the energy dissipation effect of the energy dissipation steel bars 2 in the axial direction and the radial direction can be.
In this embodiment, the segment body 101 has an energy consuming reinforcement hole 103 formed therein, and the energy consuming reinforcement 2 is radially spaced from an inner wall of the energy consuming reinforcement hole 103 to form a gap.
In this embodiment, the energy consuming reinforcement holes 103 are formed at both upper and lower ends of the segment body 101, the energy consuming reinforcement holes 103 at both ends are located on the same axis, and the axis passes through the cast-in-place portion 102, and the energy consuming reinforcement holes 103 on the segment 1 are respectively matched with the energy consuming reinforcement holes 103 on the adjacent segment 1 at the same end.
In this embodiment, fig. 3 is a schematic structural diagram of the pipeline 5, and fig. 4 is a schematic matching diagram of the pipeline 5 and the energy-consuming steel bar 2. The pipeline 5 is pre-embedded in the segment body 101 to form the energy consumption reinforcing steel bar hole 103, so that concrete in the segment 1 can be simply protected, and the subsequent energy consumption effect is prevented from being influenced by direct damage of the concrete.
In this embodiment, the pipe 5 is provided with an annular gasket 6 at the pipe orifice at one end of the outer side thereof. The annular gasket 6 is arranged at the pipe openings at the two ends of the pipeline 5, and when the bridge pier is subjected to radial shearing force, the annular gasket 6 is arranged, so that the inner wall of the pipeline 5 can be protected, and the subsequent energy consumption effect is prevented from being influenced by direct damage.
In this embodiment, inner walls of two ends of the pipeline 5 protrude inward in a radial direction to form a step 7 for positioning when the annular gasket 6 is installed, a central hole for the energy dissipation steel bar to pass through is formed in the middle of the annular gasket 6, when one end face of the annular gasket 6 is positioned by the step 7, the other end face of the annular gasket 6 is flush with the end face of the pipeline 5, and the step 7 facilitates installation of the annular gasket 6 and can also be used for positioning.
In this embodiment, pipeline 5 is made for plastic material, including first section of jurisdiction 501 and second section of jurisdiction 502, first section of jurisdiction 501 and second section of jurisdiction 502 are the semi-circular arc piece that the symmetry set up for first section of jurisdiction 501 and second section of jurisdiction 502 cooperate each other and form completely pipeline 5, the both ends inboard of first section of jurisdiction 501 and second section of jurisdiction 502 all is provided with annular gasket 6, and passes through annular gasket 6 mutual fixed connection. First section of jurisdiction 501 and second section of jurisdiction 502 divide the section of jurisdiction by a plurality of pieces to constitute, divide the section of jurisdiction to arrange respectively along pipeline 5's length direction and form first section of jurisdiction 501 and second section of jurisdiction 502, through setting up pipeline 5 burst, and adopt plastic material to support, the direct destruction of pipeline 5 has been reduced, if pipeline 5 adopts hard material, pipeline 5 is first when receiving seismic excitation, very easily insert the piece that produces the destruction in the gap of second festival section 2, can cause continuous destruction effect, but pipeline 5 adopts plastic material to make, can prevent pipeline 5 direct destruction, and adopt the structure of burst formula, can give pipeline 5 displacement space more, can also resume after the earthquake, increase the life-span of pipeline 5 and pier body.
In this embodiment, energy consumption reinforcing bar 2 is two at least, and follows the circumference evenly distributed of pier body consumes energy in circumference equipartition, can improve the stability of power consumption.
The construction method of the assembly type bridge pier adopts any one of the assembly type bridge piers, firstly, each section 1 is prefabricated and molded in a factory, the first section is fixedly installed on a bearing platform 3, then, each section 1 is assembled upwards in sequence, energy dissipation reinforcing steel bar holes 103 among the sections 1 are positioned on the same straight line, each section 1 is fixed, the whole energy dissipation reinforcing steel bar 2 penetrates through the energy dissipation reinforcing steel bar holes 103 of all the sections 1, and the energy dissipation reinforcing steel bars 2 are fixedly connected with the section bodies 101 of each section 2 respectively through pouring cast-in-place parts 102 on each section body 101, so that the fixed connection mode of the energy dissipation reinforcing steel bars 2 and the bridge pier body in the axial direction is discontinuous.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. An assembled pier which characterized in that: including the pier body and along the axial setting of pier body this internal power consumption reinforcing bar of pier, the pier body is by a plurality of sections supreme formation of assembling in proper order down, the section includes the section body, the lateral wall trompil of section body forms the cast-in-place portion of section through the cast-in-place, power consumption reinforcing bar passes along the axial of pier body in proper order a plurality of sections, power consumption reinforcing bar respectively with section body gap junction just pour with the cast-in-place portion an organic whole of section.
2. The fabricated pier of claim 1, wherein: energy consumption reinforcing bar holes are formed in the segment bodies, and the energy consumption reinforcing bars are radially separated from the inner walls of the energy consumption reinforcing bar holes to form gaps.
3. The fabricated pier of claim 2, wherein: the upper end and the lower end of the segment body are provided with the energy dissipation reinforcing steel bar holes, the energy dissipation reinforcing steel bar holes at the two ends are positioned on the same axis, the axis penetrates through the cast-in-place part, and the energy dissipation reinforcing steel bar holes on the segments are respectively matched with the energy dissipation reinforcing steel bar holes of the adjacent segments positioned at the same end.
4. The fabricated pier of claim 3, wherein: and pipelines are embedded in the segment bodies to form the energy consumption reinforcing steel bar holes.
5. The fabricated pier of claim 4, wherein: and an annular gasket is arranged at the pipe orifice of one end of the pipeline positioned at the outer side of the pipeline.
6. The fabricated pier of claim 5, wherein: the inner walls of two ends of the pipeline are radially inwards protruded to form a step for positioning when the annular gasket is installed, a central hole for the energy consumption steel bar to pass through is formed in the middle of the annular gasket, and when one end face of the annular gasket is positioned by the step, the other end face of the annular gasket is flush with the end face of the pipeline.
7. The fabricated pier of claim 6, wherein: the pipeline is made of plastic materials and comprises a first segment and a second segment, the first segment and the second segment are semi-arc pieces symmetrically arranged, so that the first segment and the second segment are mutually matched to form a complete pipeline, and the first segment and the second segment are fixedly connected with each other through annular gaskets.
8. The fabricated pier of claim 7, wherein: the first duct piece and the second duct piece are both composed of a plurality of duct piece dividing pieces, and the duct pieces are respectively arranged along the length direction of the pipeline to form the first duct piece and the second duct piece.
9. The fabricated pier of claim 1, wherein: the energy-consuming steel bars are at least two and are uniformly distributed along the circumferential direction of the pier body.
10. The construction method of the assembly type pier is characterized in that: an assembled pier according to any one of claims 1 to 9, wherein the segments are prefabricated at the factory, the first segment is fixedly installed on a bearing platform, the segments are sequentially assembled upwards, the energy dissipation steel bar holes between the segments are positioned on the same straight line and are fixed, the whole energy dissipation steel bar penetrates through the energy dissipation steel bar holes of all the segments, and the energy dissipation steel bar is fixedly connected with the segment bodies of the segments respectively by pouring cast-in-situ parts on the segment bodies, so that the fixed connection mode of the energy dissipation steel bar and the pier body in the axial direction is discontinuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506167.8A CN110080093B (en) | 2019-06-12 | 2019-06-12 | Assembled pier and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910506167.8A CN110080093B (en) | 2019-06-12 | 2019-06-12 | Assembled pier and construction method thereof |
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| Publication Number | Publication Date |
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| CN110080093A CN110080093A (en) | 2019-08-02 |
| CN110080093B true CN110080093B (en) | 2020-10-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20020011706A (en) * | 2000-08-04 | 2002-02-09 | 김희, 이방주 | Fabricated pier and Fabricated pier construction method |
| KR100499977B1 (en) * | 2002-10-24 | 2005-07-07 | 노윤근 | Reinforced concrete unit pier block using prestressed concrete steel wire assembly and H-beam, and constructing method of fabricated reinforced concrete pier using the unit pier block |
| KR101036852B1 (en) * | 2008-07-21 | 2011-05-25 | (주)대우건설 | Psc bridge pier assembled with precast concrete segments having steel duct and steel pipe and reinforcing bar, and constructing method thereof |
| US8231309B2 (en) * | 2009-12-10 | 2012-07-31 | Willamette Graystone, Inc. | Pier bracket |
| CN107354862B (en) * | 2017-06-30 | 2019-03-01 | 东北大学 | Prefabricated interlayer steel tube concrete and hollow steel bar concrete assembly bridge pier |
| CN108589514B (en) * | 2018-05-06 | 2020-04-14 | 北京工业大学 | Bearing and earthquake-proof mechanism separated prefabricated assembled pier system |
| CN109162199B (en) * | 2018-10-24 | 2020-01-07 | 湖南大学 | Combined prefabricated bridge pier connecting structure and construction method thereof |
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Effective date of registration: 20200929 Address after: 350700, building 18, Nanhu garden, camphor city, Yongtai County, Fujian, Fuzhou 202 Applicant after: Yongfu Construction Engineering Group Co., Ltd Address before: 402247 No. 106, Mishiba Street, Shuangfu Street, Jiangjin District, Chongqing (1-24, Tongfu International Building) Applicant before: CHONGQING JINSENTENG ARCHITECTURAL ENGINEERING CONSULTATION Co.,Ltd. |
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