CN105421221A - Prefabricated segmental assembling concrete bridge pier and connection technique thereof - Google Patents
Prefabricated segmental assembling concrete bridge pier and connection technique thereof Download PDFInfo
- Publication number
- CN105421221A CN105421221A CN201510738327.3A CN201510738327A CN105421221A CN 105421221 A CN105421221 A CN 105421221A CN 201510738327 A CN201510738327 A CN 201510738327A CN 105421221 A CN105421221 A CN 105421221A
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- China
- Prior art keywords
- rod iron
- thread rod
- screw thread
- pier
- cylindrical notch
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Classifications
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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
-
- 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
Abstract
The invention discloses a prefabricated segmental assembling concrete bridge pier and a connection technique thereof. A lower threaded steel rod is pre-buried in the lower portion of a pier body section. An upper threaded steel rod is pre-buried in the upper portion of the pier body section. The lower portion of a threaded sleeve serves as a threaded section. The upper section of the threaded section is connected with a connection section. The upper portion of the connection section is connected with a sleeve body. The threaded section of the threaded sleeve is connected with the lower threaded steel rod. The upper threaded steel rod is inserted into the threaded sleeve from the top. The threaded sleeve is sleeved with a cylindrical notch. The lower threaded steel rod, the upper threaded steel rod, the threaded sleeve and the cylindrical notch are fixedly connected through cement mortar. The grout sleeve is divided into the upper part and the lower part. The pier body section can be hoisted directly by screwing the lower half part, namely the detachable threaded sleeve, on site, and the workload is small. The diameter of the cylindrical notch is twice the diameter of the top of the detachable sleeve, the diameter of the top of the detachable sleeve is three times the diameter of the pre-buried threaded steel rod, the construction permissible error is large, the construction efficiency is high, the difficulty is low, and operation is easy.
Description
Technical field
The present invention relates to a kind of sectional type bridge pier precasting process, particularly relate to a kind of Precast Concrete Segmental Bridges concrete pier and Joining Technology thereof.
Background technology
In the last few years, bridge construction presented the feature that bridge pier quantity is many, the duration is short.This has promoted the development of Precast Concrete Segmental Bridges bridge pier technology, owing to not needing tensioned prestressing bar, site work amount is little, so the technology connecting upper-lower segment with grout sleeve obtains extensive utilization in low earthquake intensity region, but existing grout sleeve link technique, and construction allowable error is little, construction precision requires high, particularly when upper and lower two sections need to rely on multiple grout sleeve to connect many reinforcing bars simultaneously, high to lifting required precision, difficulty of construction is very large.Therefore, from reduction difficulty of construction, improve efficiency of construction, the object of reduction of erection time is set out, and develops one and can increase construction allowable error, simple structure, safely and effectively novel grouting branch sleeve and have great importance.
Because connect the defect of existence between above-mentioned existing bridge pier, the present inventor is based on being engaged in the practical experience and professional knowledge that this type of product design manufacture enriches for many years, and coordinate the utilization of scientific principle, actively in addition research and innovation, to founding a kind of novel Precast Concrete Segmental Bridges concrete pier and Joining Technology thereof, it is made to have more practicality.Through constantly research, design, and through repeatedly studying sample and after improving, finally creating the present invention had practical value.
Summary of the invention
Main purpose of the present invention is, overcomes the defect that between existing pier shaft, Joining Technology exists, and provides a kind of novel Precast Concrete Segmental Bridges concrete pier and Joining Technology thereof, reduce difficulty of construction, improve efficiency of construction, thus be more suitable for practicality, and there is the value in industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of Precast Concrete Segmental Bridges concrete pier that the present invention proposes, include lower screw thread rod iron, upper screw thread rod iron, screw shell and cylindrical notch,
Described lower screw thread rod iron is embedded in pier shaft sections bottom, and described upper screw thread rod iron is embedded in pier shaft sections top,
The bottom of described screw shell is thread segment, and the top of thread segment is connected with linkage section, and the top of linkage section is connected with sleeve body,
The thread segment of described screw shell connects lower screw thread rod iron, and upper screw thread rod iron inserts in screw shell from top, and the described cylindrical notch of outside socket, is fixedly connected with lower screw thread rod iron, upper screw thread rod iron, screw shell with cylindrical notch by cement mortar.
Further, aforesaid Precast Concrete Segmental Bridges concrete pier, is provided with grout hole at a side lower part of described cylindrical notch excircle, and a upper lateral part of described cylindrical notch excircle is provided with slurry outlet.
Further, aforesaid Precast Concrete Segmental Bridges concrete pier, all alternately arranges groove and fin at the surfaces externally and internally of described screw shell and cylindrical notch.
Further, aforesaid Precast Concrete Segmental Bridges concrete pier, is provided with hole at the top of described sleeve body and circumferential surface, and described upper screw thread rod iron is arranged in the hole at sleeve body top.
Precast Concrete Segmental Bridges concrete pier Joining Technology, comprises following operating procedure,
Step one, prefabricated pier shaft sections, described lower screw thread rod iron, upper screw thread rod iron and be embedded in different pier shaft sections respectively;
Step 2, is connected lower screw thread rod iron with upper screw thread rod iron with cylindrical notch by screw shell,
Step 3, joints cement mortar in cylindrical notch, and then pier shaft sections is fixed.
Further, aforesaid Precast Concrete Segmental Bridges concrete pier Joining Technology, after in described step 2, lower screw thread rod iron and screw shell spiral are fixed, inserts upper screw thread rod iron in screw shell, at screw shell outside socket cylindrical groove mouth.
Further, aforesaid Precast Concrete Segmental Bridges concrete pier Joining Technology, in described step 3, mortar is built by the grout hole being arranged on cylindrical notch excircle one side lower part.
Further, aforesaid Precast Concrete Segmental Bridges concrete pier Joining Technology, mortar is entered in the space that described cylindrical notch and screw shell formed by described grout hole, and enters screw shell inside by the hole that screw shell circumferential surface is arranged.
By technique scheme, Precast Concrete Segmental Bridges concrete pier of the present invention and Joining Technology thereof at least have following advantages:
(1) by grout sleeve is separated into upper and lower two parts, factory's pre-buried the first half steel circular cylindrical notch, on-the-spot need be screwed into the latter half removable strip screw shell, can directly lift pier shaft sections, workload is few, and the diameter of (2) cylindrical notch is the twice of removable sleeve top diameter, removable sleeve top diameter is three times of pre-buried screw thread rod iron diameter, permission construction error is large, and efficiency of construction is high, difficulty is little, convenient operation.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of manual, be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the sectional view of Precast Concrete Segmental Bridges concrete pier of the present invention;
Fig. 2 is screw shell structural representation;
Fig. 3 is the top view of cylindrical notch;
Fig. 4 is pier shaft sections upper axis mapping;
Fig. 5 is pier shaft sections bottom axonometric drawing;
Mark implication in figure: 1. descend screw thread rod iron, 2. go up screw thread rod iron, 3. screw shell, 4. cylindrical notch, 5. grout hole, 6. slurry outlet, 7. bonding surface, 8. groove, 9. fin, 10. hole, 3-1. thread segment, 3-2. linkage section, 3-3. sleeve body.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, to the Precast Concrete Segmental Bridges concrete pier proposed according to the present invention and its detailed description of the invention of Joining Technology, feature and effect thereof, be described in detail as follows.
Embodiment 1
Precast Concrete Segmental Bridges concrete pier structural representation of the present invention as shown in Fig. 1 ~ 5, includes lower screw thread rod iron 1, upper screw thread rod iron 2, screw shell 3, thread segment 3-1, linkage section 3-2, sleeve body 3-3, cylindrical notch 4, grout hole 5, slurry outlet 6, bonding surface 7, groove 8, fin 9 and hole 10.
Lower screw thread rod iron 1 is embedded in pier shaft sections bottom, and upper screw thread rod iron 2 is embedded in pier shaft sections top, smears epoxy gluing agent and form bonding surface 7 between the pier shaft sections be connected to each other.The bottom of screw shell 3 is thread segment 3-1, the top of thread segment 3-1 is connected with linkage section 3-2, the top of linkage section 3-2 is connected with sleeve body 3-3, the thread segment 3-1 of screw shell 3 connects lower screw thread rod iron 1, upper screw thread rod iron 2 inserts in screw shell 3 from top, be provided with hole 10 at the top of sleeve body 3-3 and circumferential surface, upper screw thread rod iron 2 is arranged in the hole 10 at sleeve body 3-3 top.Outside socket cylindrical groove mouth 4, is fixedly connected with lower screw thread rod iron 1, upper screw thread rod iron 2, screw shell 3 with cylindrical notch 4 by cement mortar.A side lower part of cylindrical notch 4 excircle is provided with grout hole 5, and a upper lateral part of cylindrical notch 4 excircle is provided with slurry outlet 6, and what replace at screw shell 3 external surface and cylindrical notch 4 inner surface is furnished with groove 8 and fin 9.
Precast Concrete Segmental Bridges concrete pier Joining Technology of the present invention comprises following operating procedure:
Step one, prefabricated pier shaft sections, wherein descends screw thread rod iron 1 and upper screw thread rod iron 2 for follow more, is embedded in different pier shaft sections respectively;
Step 2, lower screw thread rod iron 1 is connected with upper screw thread rod iron 2 with cylindrical notch 4 by screw shell 3, screw shell 3 to be tightened with pre-buried lower screw thread rod iron 1 by thread segment 3-1 and is connected, after whole socket completes, first form bonding surface 7 in the agent of pier shaft sections upper surface uniform application one deck epoxy gluing, start again to lift new prefabricated pier shaft sections, during lifting, upper screw thread rod iron 2 is inserted the top of screw shell 3 sleeve body 3-3, screw shell 3 inserts in cylindrical notch 4, all align after inserting, slowly transferring in pier shaft sections process, adjust pier shaft sections position gradually, upper and lower pier shaft sections bonding surface 7 is precisely fitted, after determining that bonding surface 7 is precisely fitted, process the outer seam crossing of upper and lower pier shaft sections because of the excessive epoxy gluing agent of pressure,
Step 3, after epoxy gluing agent is solidified and is reached requirement of strength, the high-strength expansive cement mortar of ungauged regions is built in cylindrical notch 4, mortar is built by the grout hole 5 being arranged on cylindrical notch 4 excircle one side lower part, enter in space that cylindrical notch 4 and screw shell 3 formed, and it is inner to enter screw shell 3 by the hole 10 that screw shell 3 circumferential surface is arranged, and then pier shaft sections is fixed, the high-strength expansive cement mortar of grout hole 5 note pressure ungauged regions, slurry outlet 6 and grout hole 5 is closed when slurry outlet 6 pulp, the installation of a pier shaft sections can be completed.After mortar strength reaches designing requirement, then carry out next sections installation.
Wherein in cylindrical notch 4 with screw shell 3, alternately arrange groove 8 and fin 9, the snap-in force be used between increase and concrete, mortar, the sidewall of screw shell 3 has hole 10, the mortar inside and outside screw shell 3 is better bondd.
Cylindrical notch 4 height 30d≤X≤35d, screw shell 3 and the lower screw thread rod iron 1 be embedded in prefabricated pier shaft sections tighten connecting length X1 >=5d, screw shell 3 inserts the length X2 >=25d of cylindrical notch 4, the upper screw thread rod iron 2 be embedded in prefabricated pier shaft sections inserts the length X3 >=X2 of screw shell 3, screw shell 3 upper diameter D1 ≈ 3d, cylindrical notch 4 bore D2 ≈ 6d.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a Precast Concrete Segmental Bridges concrete pier, is characterized in that: include lower screw thread rod iron (1), upper screw thread rod iron (2), screw shell (3) and cylindrical notch (4),
Described lower screw thread rod iron (1) is embedded in pier shaft sections bottom, and described upper screw thread rod iron (2) is embedded in pier shaft sections top,
The bottom of described screw shell (3) is thread segment (3-1), the top of thread segment (3-1) is connected with linkage section (3-2), the top of linkage section (3-2) is connected with sleeve body (3-3)
The thread segment (3-1) of described screw shell (3) connects lower screw thread rod iron (1), upper screw thread rod iron (2) is inserted in screw shell (3) from top, the described cylindrical notch (4) of outside socket, is fixedly connected with lower screw thread rod iron (1), upper screw thread rod iron (2), screw shell (3) with cylindrical notch (4) by cement mortar.
2. Precast Concrete Segmental Bridges concrete pier according to claim 1, it is characterized in that: a side lower part of described cylindrical notch (4) excircle is provided with grout hole (5), a upper lateral part of described cylindrical notch (4) excircle is provided with slurry outlet (6).
3. Precast Concrete Segmental Bridges concrete pier according to claim 1, is characterized in that: what replace at described screw shell (3) external surface and cylindrical notch (4) surfaces externally and internally is furnished with groove (8) and fin (9).
4. Precast Concrete Segmental Bridges concrete pier according to claim 1, it is characterized in that: be provided with hole (10) at the top of described sleeve body (3-3) and circumferential surface, described upper screw thread rod iron (2) is arranged in the hole (10) at sleeve body (3-3) top.
5. Precast Concrete Segmental Bridges concrete pier Joining Technology, is characterized in that: comprise following operating procedure,
Step one, prefabricated pier shaft sections, described lower screw thread rod iron (1) and upper screw thread rod iron (2) are embedded in different pier shaft sections respectively;
Step 2, is connected lower screw thread rod iron (1) with upper screw thread rod iron (2) with cylindrical notch (4) by screw shell (3),
Step 3, joints cement mortar in cylindrical notch (4), and then pier shaft sections is fixed.
6. Precast Concrete Segmental Bridges concrete pier Joining Technology according to claim 5, it is characterized in that: after in described step 2, lower screw thread rod iron (1) and screw shell (3) spiral are fixed, upper screw thread rod iron (2) is inserted in screw shell (3), at screw shell (3) outside socket cylindrical groove mouth (4).
7. Precast Concrete Segmental Bridges concrete pier Joining Technology according to claim 5, is characterized in that: in described step 3, mortar is built by the grout hole (5) being arranged on cylindrical notch (4) excircle one side lower part.
8. Precast Concrete Segmental Bridges concrete pier Joining Technology according to claim 7, it is characterized in that: mortar is entered in the space that described cylindrical notch (4) and screw shell (3) formed by described grout hole (5), and it is inner to enter screw shell (3) by the hole (10) that screw shell (3) circumferential surface is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510738327.3A CN105421221B (en) | 2015-11-03 | 2015-11-03 | Precast Concrete Segmental Bridges concrete pier and its Joining Technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510738327.3A CN105421221B (en) | 2015-11-03 | 2015-11-03 | Precast Concrete Segmental Bridges concrete pier and its Joining Technology |
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| CN105421221A true CN105421221A (en) | 2016-03-23 |
| CN105421221B CN105421221B (en) | 2017-12-29 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970804A (en) * | 2016-07-14 | 2016-09-28 | 东南大学 | Structure and construction method of fan-shaped tenon joints of prefabricated assembly pier |
| CN106192729A (en) * | 2016-07-14 | 2016-12-07 | 东南大学 | Precast assembly bridge pier core shape joggle structure and construction method |
| CN106592440A (en) * | 2016-12-30 | 2017-04-26 | 河南省交通规划设计研究院股份有限公司 | Construction method of prefabricated segment type pier |
| CN107268424A (en) * | 2017-07-06 | 2017-10-20 | 东南大学 | Can fast leveling precast assembly bridge pier structure and its construction method |
| CN108118611A (en) * | 2018-01-23 | 2018-06-05 | 安徽省交通控股集团有限公司 | A kind of prefabricated pier, plate tubular Crossing brace connection structure |
| CN108331259A (en) * | 2018-01-30 | 2018-07-27 | 沈阳建筑大学 | The wedge-shaped intermediate plate anchor head of major diameter high tensile reinforcement for reinforced concrete beam column node and application |
| CN108951404A (en) * | 2018-08-10 | 2018-12-07 | 苏交科集团股份有限公司 | Precast segment pier stud cross connecting structure and connection method |
| CN110453607A (en) * | 2019-08-22 | 2019-11-15 | 苏交科集团股份有限公司 | A kind of precast pier reinforcing bar connection type and its construction method |
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| CN205100092U (en) * | 2015-11-03 | 2016-03-23 | 苏交科集团股份有限公司 | Prefabricated assembled concrete bridge mound |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970804A (en) * | 2016-07-14 | 2016-09-28 | 东南大学 | Structure and construction method of fan-shaped tenon joints of prefabricated assembly pier |
| CN106192729A (en) * | 2016-07-14 | 2016-12-07 | 东南大学 | Precast assembly bridge pier core shape joggle structure and construction method |
| CN106192729B (en) * | 2016-07-14 | 2017-10-20 | 东南大学 | Precast assembly bridge pier core shape joggle head structure and construction method |
| CN106592440A (en) * | 2016-12-30 | 2017-04-26 | 河南省交通规划设计研究院股份有限公司 | Construction method of prefabricated segment type pier |
| CN106592440B (en) * | 2016-12-30 | 2018-03-16 | 河南省交通规划设计研究院股份有限公司 | A kind of construction method of prefabricated subsection type bridge pier |
| CN107268424A (en) * | 2017-07-06 | 2017-10-20 | 东南大学 | Can fast leveling precast assembly bridge pier structure and its construction method |
| CN107268424B (en) * | 2017-07-06 | 2019-05-03 | 东南大学 | Can fast leveling precast assembly bridge pier structure and its construction method |
| CN108118611A (en) * | 2018-01-23 | 2018-06-05 | 安徽省交通控股集团有限公司 | A kind of prefabricated pier, plate tubular Crossing brace connection structure |
| CN108118611B (en) * | 2018-01-23 | 2023-10-17 | 安徽省交通控股集团有限公司 | Prefabricated mound, board cylindric shear force prop connection structure |
| CN108331259A (en) * | 2018-01-30 | 2018-07-27 | 沈阳建筑大学 | The wedge-shaped intermediate plate anchor head of major diameter high tensile reinforcement for reinforced concrete beam column node and application |
| CN108951404A (en) * | 2018-08-10 | 2018-12-07 | 苏交科集团股份有限公司 | Precast segment pier stud cross connecting structure and connection method |
| CN110453607A (en) * | 2019-08-22 | 2019-11-15 | 苏交科集团股份有限公司 | A kind of precast pier reinforcing bar connection type and its construction method |
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Inventor after: Zhang Jiandong Inventor after: Liu Duo Inventor after: Gu Jiancheng Inventor after: Wu Zhishen Inventor after: Liu Zhao Inventor after: Li Yong Inventor before: Zhang Jiandong Inventor before: Liu Duo Inventor before: Gu Jiancheng Inventor before: Wu Zhishen Inventor before: Zhang Wenming Inventor before: Zhuo Weiding Inventor before: Wang Cuan |
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