CN113123222A - Socket joint type connecting structure between prefabricated bridge pier column and bearing platform additionally provided with boss - Google Patents
Socket joint type connecting structure between prefabricated bridge pier column and bearing platform additionally provided with boss Download PDFInfo
- Publication number
- CN113123222A CN113123222A CN202110441821.9A CN202110441821A CN113123222A CN 113123222 A CN113123222 A CN 113123222A CN 202110441821 A CN202110441821 A CN 202110441821A CN 113123222 A CN113123222 A CN 113123222A
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- boss
- bearing platform
- pier stud
- socket
- prefabricated pier
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a socket type connecting structure between a prefabricated pier stud and a bearing platform additionally provided with a boss. The technical scheme of the invention has the beneficial effects that: not only saves the project amount of the bearing platform, but also ensures that the socket depth and the anchoring effect meet the design requirements, and the structure has the characteristics of simple structure, engineering cost saving and reliable stress; compared with a bearing platform of a cast-in-situ pier column structure, the structure of the boss also plays a role in diffusing the internal force of the bottom of the pier column, and the stress capacity of the bearing platform is improved.
Description
Technical Field
The invention belongs to the technical field of bridge prefabrication and assembly in civil engineering, and particularly relates to a socket type connecting structure suitable for a bridge pier column and a bearing platform, in particular to a socket type connecting structure between a prefabricated bridge pier column and a bearing platform with an additional boss.
Background
In the application of the pier prefabrication and assembly technology, the socket joint type connection of the pier column and the bearing platform is popularized and applied by the advantages of simple structure, convenient and quick construction, safe and reliable stress and the like. The connection mode is that a bearing slot is reserved in a bearing platform, the lower end of a prefabricated stand column is inserted into the reserved slot, and caulking materials are poured into a gap between the stand column and the bearing slot to form embedded connection. However, the socket grooves may damage the integrity of the platform, and compared to the pier structure of the cast-in-place pier stud and the platform thereof (as shown in fig. 1a, where 1 denotes the cast-in-place pier stud, and 2 denotes the platform), if the size of the platform structure is not changed, in order to compensate for the adverse effect that the bearing capacity of the socket grooves is weakened, very strong common steel bars need to be arranged around the socket grooves and at the bottom of the platform, which results in a large increase in the amount of the steel bars. Sometimes even this cannot meet the requirement of bearing platform stress, so measures for increasing the thickness of the bearing platform are often taken (as shown in fig. 1b, wherein 1 represents prefabricated pier column, 2 represents bearing platform, and 3 represents caulking material), resulting in the increase of the engineering quantity of the bearing platform. Therefore, the optimization of the connecting structure on the basis of the traditional socket type structure is significant, the bearing platform structure can be prevented from being overstaffed, and the construction cost is saved.
Disclosure of Invention
In view of the above, the present invention provides a socket joint type connection structure between a prefabricated pier stud and a bearing platform with an additional boss, so that the depth of the reserved socket joint groove meets the design requirement, the connection strength is ensured, the adverse effect that the bearing pressure of the bearing platform is weakened is reduced, the engineering quantity of the bearing platform is saved, and the defects in the prior art are overcome.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a socket joint formula connection structure between prefabricated pier stud and the cushion cap of addding the boss, the top of cushion cap is equipped with socket groove, and the lower extreme of prefabricated pier stud inserts in the socket groove, wherein, the top of cushion cap is located socket groove position encircles prefabricated pier stud sets up the boss.
The prefabricated pier stud and the bearing platform additionally provided with the boss are in socket joint type connection structure, wherein the boss is in a shape of a column with a uniform cross section or a conical platform with a variable cross section or a shape combining a cone and a column.
The socket type connecting structure between the prefabricated pier stud and the bearing platform additionally provided with the boss is characterized in that the boss is a reinforced concrete component internally provided with a horizontal stirrup and peripheral vertical steel bars, and the peripheral vertical steel bars are anchored in the bearing platform.
The prefabricated pier stud and the bearing platform additionally provided with the boss are in socket joint type connection structure, wherein the prefabricated pier stud is a concrete member or a steel structure member.
The prefabricated pier stud and the bearing platform additionally provided with the boss are in socket joint type connection structure, wherein the cross section of the prefabricated pier stud is circular or polygonal.
The socket joint type connection structure between the prefabricated pier column and the bearing platform additionally provided with the boss is characterized in that boss concrete for manufacturing the boss and bearing platform concrete for manufacturing the bearing platform are poured simultaneously, or the bearing platform concrete is firstly constructed and corresponding parts of the bearing slots are reserved, and the boss concrete is poured after the prefabricated pier column is installed and caulked materials are poured.
The socket joint type connection structure between the prefabricated pier stud and the bearing platform additionally provided with the boss is characterized in that the structure size and the reinforcement design of the boss are determined through calculation analysis or model test.
The technical scheme of the invention has the beneficial effects that:
not only saves the project amount of the bearing platform, but also ensures that the socket depth and the anchoring effect meet the design requirements, and the structure has the characteristics of simple structure, engineering cost saving and reliable stress; compared with a bearing platform of a cast-in-situ pier column structure, the structure of the boss also plays a role in diffusing the internal force of the bottom of the pier column, and the stress capacity of the bearing platform is improved.
Drawings
FIG. 1a is a schematic view of a structure of a cast-in-place pier and a bearing platform thereof;
FIG. 1b is a schematic view of a pier structure of a prefabricated pier stud and a bearing platform thereof;
FIG. 2 is a schematic structural view of the present invention;
FIGS. 3a, 3b and 3c are schematic structural diagrams of embodiments of the present invention with different boss shapes, respectively;
FIG. 4a is a schematic structural view of the present invention after the boss and the cap are simultaneously poured;
FIG. 4b is a schematic structural view of the platform of the present invention in which the boss is poured first and then poured;
FIG. 5a is a diagram showing a top surface and four-side crack distribution of a bearing platform of a cast-in-place test piece;
FIG. 5b is a view showing the top surface and four-side crack distribution of the bearing platform of the socket type connection test piece with the boss according to the present invention;
FIG. 6a is a schematic diagram of the strain of a steel bar at the bottom of a bearing platform of a cast-in-place test piece;
FIG. 6b is a schematic diagram of the strain of the steel bar at the bottom of the bearing platform of the socket type connection test piece provided with the boss according to the present invention.
Detailed Description
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Referring to fig. 2, the socket type connection structure between the prefabricated pier stud and the platform with the boss added is applied to the socket type connection between the prefabricated pier stud 1 and the platform 2, wherein the top of the platform 2 is provided with a socket slot 21, and the lower end of the prefabricated pier stud 1 is inserted into the socket slot 21. The invention of the scheme is characterized in that the top of the bearing platform 2 is positioned at the position of the socket slot 21 and is provided with the boss 4 around the prefabricated pier stud 1, the socket slot 21 is reserved according to the socket depth required by design, the prefabricated pier stud 1 is hoisted and inserted into the socket slot 21, and caulking materials 3 are poured into gaps between the periphery of the prefabricated pier stud 1 and the wall of the socket slot 21 to realize firm connection. Therefore, the bearing capacity of the bearing platform structure is weakened and less influenced, and the thickness of the bearing platform 2 is thinner, so that the engineering quantity is saved, and the aims of simple structure, bearing platform engineering quantity saving, safe and reliable connection and bearing platform stress improvement are fulfilled.
In the preferred embodiment of the present invention, as shown in fig. 3a, 3b and 3c, the boss 4 may be a column shape with a constant cross section, a tapered table with a variable cross section, a combination of a taper shape and a column shape, or the like.
The boss 4 is a reinforced concrete member in which a horizontal stirrup and peripheral vertical steel bars are arranged, and the peripheral vertical steel bars are anchored in the bearing platform 2.
In the preferred embodiment of the scheme, the boss concrete for manufacturing the boss 4 and the bearing platform concrete for manufacturing the bearing platform 2 are poured simultaneously, or the bearing platform concrete is firstly constructed and the corresponding bearing slot is reserved, and the boss concrete is poured after the precast pier stud 1 is installed and the caulking material 3 is poured. Referring to fig. 4a, a socket slot 21 of a prefabricated bridge pier stud 1 is reserved in a construction bearing platform 1 and a boss 4, then the pier stud 2 is hoisted into the socket slot 21, and after the position and the verticality are adjusted, caulking materials 3 are poured to realize the embedded connection. Referring to fig. 4b, when the mode of casting the boss later is adopted, the bearing platform 2 is constructed firstly, the socket groove 21 of the prefabricated pier stud 1 is reserved, then the prefabricated pier stud 1 is hoisted into the socket groove 21, the caulking material 3 is poured after the position and the verticality are adjusted, and finally the boss concrete is cast to realize the embedded connection.
The structural dimensions and the reinforcement design of the bosses 4 are determined by computational analysis or model tests, so that the material consumption can be saved and the stress requirements can be met.
In order to verify the reliability and effectiveness of the socket type connecting structure of the bearing platform additionally provided with the boss and the improvement condition of the bearing platform stress, a cast-in-place model test piece and a socket type model test piece are manufactured and a pseudo-static force loading test is carried out.
The test result shows that the damage areas of the socket test piece and the cast-in-place test piece are concentrated at the bottom of the pier, the caulking of the socket connection model test piece with the boss added has no obvious damage to the boss, the socket structure for the test can provide effective connection anchoring effect for the pier, the anti-seismic performance of the socket test piece is similar to that of the cast-in-place test piece, and the socket connection structure with the boss added can meet the anti-seismic ductility design requirement of high-intensity areas.
In the test process, the bearing platform crack of the cast-in-place test piece firstly appears at the junction position of the bridge pier and the bearing platform 2, gradually extends to the side edge of the bearing platform along with the increase of the load grade, the maximum crack width is 0.27mm, and fig. 5a shows the test crack phenomenon of the cast-in-place test piece bearing platform. The caulking part of the socket test piece firstly cracks, gradually extends to the boss part along with the increase of the load grade, but does not extend to the main body part of the bearing platform any more, and the test crack phenomenon of the bearing platform 2 is shown in figure 5 b.
The crack distribution of the two test pieces shows that the boss plays a great role in improving the stress condition of the bearing platform body.
Referring to fig. 6a and 6b, comparing the steel bar strain at the bottom of the bearing platform of the cast-in-place test piece and the socket test piece provided with the boss, it can be found that the maximum strain value of the cast-in-place test piece is about 200 microstrain, and the maximum strain value of the socket test piece is 80 microstrain. This means that the force transfer pattern of the two test pieces is different: under the action of the same vertical force, the bearing platform of the cast-in-place test piece bears the vertical force as a whole, so the strain value of the steel bar at the bottom of the bearing platform is larger, the vertical force of the socket test piece is transmitted to a larger range through the boss and the socket structure, the bearing platform is stressed more uniformly, and the strain value of the steel bar at the bottom of the bearing platform is smaller. Therefore, the socket joint type connecting structure with the lug boss can effectively reduce the stress of the main stressed steel bar on the bottom surface of the bearing platform, and can save the steel bar consumption of the part.
The invention not only saves the project amount of the bearing platform, but also ensures that the socket depth and the anchoring effect meet the design requirements, and the structure has the characteristics of simple structure, engineering cost saving and reliable stress; compared with a bearing platform of a cast-in-situ pier column structure, the structure of the boss also plays a role in diffusing the internal force of the bottom of the pier column, and the stress capacity of the bearing platform is improved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a prefabricated pier stud and add socket joint formula connection structure between the cushion cap of boss, the top of cushion cap (2) is equipped with socket groove (21), and the lower extreme of prefabricated pier stud (1) inserts in socket groove (21), its characterized in that, the top of cushion cap (2) is located socket groove (21) position encircles prefabricated pier stud (1) sets up boss (4).
2. The socket type connection structure between the prefabricated pier stud and the bearing platform added with the boss according to claim 1, wherein the boss (4) is a column with a constant section or a conical platform with a variable section or a shape combining a cone and a column.
3. The socket joint type connection structure between the prefabricated pier stud and the bearing platform added with the boss according to claim 1 or 2, wherein the boss (4) is a reinforced concrete member with horizontal stirrups and peripheral vertical steel bars arranged inside, and the peripheral vertical steel bars are anchored in the bearing platform (2).
4. The socket type connection structure between the prefabricated pier stud and the bearing platform with the added boss according to claim 1, wherein the prefabricated pier stud (1) is a concrete member or a steel structure member.
5. The socket type connection structure between the prefabricated pier stud and the bearing platform with the added boss according to claim 4, wherein the cross section of the prefabricated pier stud (1) is circular or polygonal.
6. The socket joint type connection structure between the precast pier stud and the bearing platform added with the boss according to claim 1, wherein the boss concrete for manufacturing the boss (4) and the bearing platform concrete for manufacturing the bearing platform (2) are simultaneously poured, or the bearing platform concrete is firstly constructed and the corresponding socket slot (21) is reserved, and the boss concrete is poured after the precast pier stud (1) is installed and the caulking material (3) is poured.
7. The socket joint type connection structure between the prefabricated pier stud and the bearing platform additionally provided with the boss according to claim 1, wherein the structural size and the reinforcing bar design of the boss (4) are determined by computational analysis or model test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110441821.9A CN113123222A (en) | 2021-04-23 | 2021-04-23 | Socket joint type connecting structure between prefabricated bridge pier column and bearing platform additionally provided with boss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110441821.9A CN113123222A (en) | 2021-04-23 | 2021-04-23 | Socket joint type connecting structure between prefabricated bridge pier column and bearing platform additionally provided with boss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113123222A true CN113123222A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110441821.9A Pending CN113123222A (en) | 2021-04-23 | 2021-04-23 | Socket joint type connecting structure between prefabricated bridge pier column and bearing platform additionally provided with boss |
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| CN (1) | CN113123222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635349A (en) * | 2021-12-06 | 2022-06-17 | 中交第二公路勘察设计研究院有限公司 | Lightweight fabricated bridge piers suitable for non-strong earthquake areas |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100066856A (en) * | 2008-12-10 | 2010-06-18 | 한국건설기술연구원 | Fabricated precast bridge pier and constructing method thereof |
| CN104404869A (en) * | 2014-11-26 | 2015-03-11 | 天津港航工程有限公司 | Pile column type concrete hollow pile pier structure |
| CN105544381A (en) * | 2015-11-30 | 2016-05-04 | 中铁二十四局集团安徽工程有限公司 | Connection structure of precast pier with annular section and bearing platform and construction method of connection structure |
| CN207176514U (en) * | 2017-09-06 | 2018-04-03 | 福建省永富建设集团有限公司 | A kind of bridge pier assembly device |
| CN108547216A (en) * | 2018-06-12 | 2018-09-18 | 北京市市政工程设计研究总院有限公司 | Bridge prefabrication performance of concrete column confined and bridge foundation alligator bell and spigot frame and construction method |
| CN208844417U (en) * | 2018-07-31 | 2019-05-10 | 中铁科建工程有限公司 | A kind of outer precast construction for pier column and its outer prefabricated interior cast-in-place pier column |
| CN111501526A (en) * | 2020-03-26 | 2020-08-07 | 上海市政工程设计研究总院（集团）有限公司 | Socket type connecting structure of prefabricated bridge pier column and bearing platform and construction method |
| CN211368352U (en) * | 2019-11-20 | 2020-08-28 | 广州市市政工程机械施工有限公司 | A connection structure of prefabricated bridge pier and cap anchoring steel bar sleeve inserted and poured after RPC |
| CN211498444U (en) * | 2019-09-25 | 2020-09-15 | 华蓝设计（集团）有限公司 | Prefabricated assembled reinforced concrete pier |
-
2021
- 2021-04-23 CN CN202110441821.9A patent/CN113123222A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100066856A (en) * | 2008-12-10 | 2010-06-18 | 한국건설기술연구원 | Fabricated precast bridge pier and constructing method thereof |
| CN104404869A (en) * | 2014-11-26 | 2015-03-11 | 天津港航工程有限公司 | Pile column type concrete hollow pile pier structure |
| CN105544381A (en) * | 2015-11-30 | 2016-05-04 | 中铁二十四局集团安徽工程有限公司 | Connection structure of precast pier with annular section and bearing platform and construction method of connection structure |
| CN207176514U (en) * | 2017-09-06 | 2018-04-03 | 福建省永富建设集团有限公司 | A kind of bridge pier assembly device |
| CN108547216A (en) * | 2018-06-12 | 2018-09-18 | 北京市市政工程设计研究总院有限公司 | Bridge prefabrication performance of concrete column confined and bridge foundation alligator bell and spigot frame and construction method |
| CN208844417U (en) * | 2018-07-31 | 2019-05-10 | 中铁科建工程有限公司 | A kind of outer precast construction for pier column and its outer prefabricated interior cast-in-place pier column |
| CN211498444U (en) * | 2019-09-25 | 2020-09-15 | 华蓝设计（集团）有限公司 | Prefabricated assembled reinforced concrete pier |
| CN211368352U (en) * | 2019-11-20 | 2020-08-28 | 广州市市政工程机械施工有限公司 | A connection structure of prefabricated bridge pier and cap anchoring steel bar sleeve inserted and poured after RPC |
| CN111501526A (en) * | 2020-03-26 | 2020-08-07 | 上海市政工程设计研究总院（集团）有限公司 | Socket type connecting structure of prefabricated bridge pier column and bearing platform and construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635349A (en) * | 2021-12-06 | 2022-06-17 | 中交第二公路勘察设计研究院有限公司 | Lightweight fabricated bridge piers suitable for non-strong earthquake areas |
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Application publication date: 20210716 |
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| RJ01 | Rejection of invention patent application after publication |