CN117026785A - Double-sided overlapped assembled bridge pier for construction of severe cold earthquake multiple areas and construction method - Google Patents
Double-sided overlapped assembled bridge pier for construction of severe cold earthquake multiple areas and construction method Download PDFInfo
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- CN117026785A CN117026785A CN202310553141.5A CN202310553141A CN117026785A CN 117026785 A CN117026785 A CN 117026785A CN 202310553141 A CN202310553141 A CN 202310553141A CN 117026785 A CN117026785 A CN 117026785A
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- prefabricated plate
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- 238000010276 construction Methods 0.000 title claims abstract description 91
- 239000004567 concrete Substances 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000011065 in-situ storage Methods 0.000 claims abstract description 20
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 239000011440 grout Substances 0.000 claims abstract 4
- 210000003205 muscle Anatomy 0.000 claims abstract 4
- 238000000034 method Methods 0.000 claims description 9
- 239000004574 high-performance concrete Substances 0.000 claims description 6
- 239000011178 precast concrete Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000009417 prefabrication Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- 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)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a double-sided overlapped assembled pier for construction of a severe cold earthquake multiple region and a construction method. Including cushion cap (1), socket joint post (2), grout hole (3), bellows grout sleeve (4), double-sided coincide concrete form (5), indulge muscle sleeve (6), indulge muscle (7), V type lacing wire (8), bent cap (9), cast in situ concrete (10), vertical wet seam (11), vertical connecting reinforcement (12), horizontal reinforcement (13), I type prefabricated plate (14), II type prefabricated plate (15), III type prefabricated plate (16), crotch (17) seventeen parts are constituteed, characterized by: (1) the invention can reduce disturbance to ecological environment, and is beneficial to protecting vulnerable ecological environment such as plateau. (2) The invention uses the concrete template to replace the steel template, does not need demoulding, saves the engineering cost and improves the construction efficiency. (3) The invention adopts the prefabricated assembly pier combining the corrugated pipe grouting and the tenon core socket and spigot joint, and has good anti-seismic performance.
Description
Technical Field
The invention relates to a novel assembled pier in a substructure in the field of bridge engineering, in particular to a double-sided overlapped assembled pier applicable to construction of multiple areas of severe cold earthquakes and a construction method.
Background
In the alpine region, the bridge pier is manufactured by adopting a traditional cast-in-situ construction method, and the construction progress is limited by high altitude, low air temperature, template height, reinforcement cage binding and concrete curing period; construction quality is affected by high and cold environmental conditions and the level of constructors, so that the period of site construction is long, the efficiency is low and the construction quality is difficult to guarantee. In the prior art, the assembly type construction is used as a novel green construction mode, and has the advantages of saving resources, shortening construction period, improving construction progress and the like. Therefore, the method has obvious advantages for pier construction by adopting assembly type construction, and particularly has more obvious advantages under the condition of severe construction environments such as high altitude and the like.
At present, the application of assembled structures in the field of bridge engineering, particularly in the lower structure of bridge engineering is less. The bridge pier is constructed by the working procedures of template assembly, concrete cast-in-situ, demoulding and the like in stages. The traditional cast-in-situ pier requires a large number of constructors to perform field operation, and the physical condition of the constructors is an extremely important problem in extremely severe extreme construction environments with high altitude and low oxygen. Therefore, the bridge pier manufactured by the traditional cast-in-situ construction is not suitable for the extreme areas with severe construction environment and great field operation difficulty from the aspects of construction progress, construction quality, safety of constructors and the like. The assembled pier is taken as a novel green pier, and the defects of construction of the traditional cast-in-situ pier in an extreme environment are overcome to a great extent by virtue of the factory prefabrication and field assembly of the novel green pier. In addition, cast-in-place piers require support of the template. And finishing the construction of the bridge pier segments by the procedures of template assembly, reinforcement cage binding, concrete cast-in-situ and demoulding. The templates of pier segments with different positions and different sizes are different. Therefore, most of the templates are disposable products. For bridge pier construction in extremely complex environment areas including the Qinghai-Tibet plateau areas, the back and forth transportation of templates and the like all increase the construction cost.
Finally, for plateau seismic multiple zones, the damage of the seismic on bridge engineering is unpredictable. In the earthquake-prone area, the construction of bridge engineering not only meets the driving safety requirement, but also meets the pier anti-seismic requirement of the area. Therefore, the invention discloses the double-sided overlapped assembled pier which can be used for construction of the severe cold earthquake multiple areas and a construction method. The bridge pier is formed by connecting precast concrete boards through lacing wires to form a member with a middle cavity, and after the member is installed and fixed on site, concrete is poured in the middle cavity to form an integrally stressed superposition assembly type bridge pier. The precast concrete superimposed sheet is used as a construction template of the pier, so that the use of steel templates is reduced; and the cast-in-place concrete in the middle cavity and the prefabricated laminated slab are integrated, so that the process of demoulding the traditional bridge pier is reduced. Has very important significance in the aspects of accelerating construction progress, ensuring construction quality, reducing ecological environment disturbance and the like. And a plastic hinge area at the bottom of the pier body is formed by adopting a corrugated pipe grouting and tenon core socket and spigot combination, and a grouting gap is filled with a high-performance concrete material, so that the crack resistance and the bearing capacity of the assembled pier are improved.
Disclosure of Invention
The invention aims to provide a double-sided overlapped assembled pier and a construction method for construction of a severe cold earthquake multiple region, which are used for improving the construction progress of piers in extreme environments, ensuring the construction quality and reducing the labor force and the construction cost. The pier integrates two plates, namely a factory prefabricated plate and a cast-in-place plate. The prefabricated plate and the cast-in-situ plate are stressed together as a whole, so that the integrity of the pier is ensured; the prefabricated templates are assembled on site, demoulding is not needed after cast-in-situ, and the construction simplicity in extreme areas is ensured. The technical scheme adopted by the invention is as follows:
a double-sided overlapped assembled pier for construction in severe cold earthquake multiple areas and a construction method. The concrete pile comprises seventeen parts including a bearing platform (1), a socket post (2), grouting holes (3), a corrugated pipe grouting sleeve (4), a double-sided laminated concrete template (5), a longitudinal rib sleeve (6), a longitudinal rib (7), a V-shaped lacing wire (8), a capping beam (9), cast-in-place concrete (10), a vertical wet joint (11), a vertical connecting steel bar (12), a horizontal steel bar (13), an I-shaped precast slab (14), a II-shaped precast slab (15), a III-shaped precast slab (16) and a bent hook (17). The grouting device is characterized in that a grouting hole (3) and a corrugated pipe grouting sleeve (4) are reserved when a bearing platform (1) is poured; the joint of the bridge pier and the bearing platform (1) adopts a mode of combining a corrugated pipe grouting sleeve (4) and a socket column (2), and high-performance concrete is poured into the corrugated pipe grouting sleeve (4) through a grouting hole (3); the double-sided laminated concrete template (5), namely the I-type precast slab (14), the II-type precast slab (15) and the III-type precast slab (16) are prefabricated in a factory standardized manner; the overhanging length of the longitudinal rib (7) at the lower end of the template is required to correspond to the longitudinal rib sleeve (6) at the corresponding position of the longitudinal rib at the upper end of the template of the next section during factory prefabrication, and meanwhile, the space position of the V-shaped lacing wire (8) is required to be noted so as to facilitate the assembly between bridge pier sections; the upper part of the uppermost pier segment, the longitudinal ribs (7) need to extend outwards so as to ensure the integrity of the pier and the capping beam (9) when the capping beam (9) is poured; the I-type precast slab (14), the II-type precast slab (15) and the III-type precast slab (16) are combined with the vertical connecting steel bars (12) through hooks (17) at the left end and the right end of a horizontal steel bar (13) of the III-type precast slab (16), so that three types of templates are completely spliced, and the outer sides of the three types of templates are filled through cast-in-situ wet joints (11) to obtain a double-sided laminated concrete template (5); the concrete (10) is cast in situ in the inner cavity of the double-sided superposed concrete template (5), so that the integrity of the pier is ensured, and the integral rigidity of the pier is increased; the bridge pier is constructed by adopting a mode of splicing an I-type precast slab (14), a II-type precast slab (15) and a III-type precast slab (16) and then casting concrete (10) in situ and splicing a next segment of bridge pier template; the two-sided superposed concrete templates (5) among the segments are connected by adopting longitudinal ribs (7), longitudinal rib sleeves (6) and vertical connecting steel bars (12) so as to ensure the integrity among the bridge pier segments; the cast-in-place concrete (10) and the double-sided laminated concrete template (5) keep consistent strength, and can be rapidly solidified and hardened in an extreme environment, so that the integrity and durability of the pier are ensured, and the site construction efficiency is improved.
Advantages and resulting advantageous effects of the invention
1. According to the invention, the three templates are connected by adopting the vertical connecting steel bars, the sections are connected by adopting the longitudinal steel bars, the longitudinal steel bar sleeves and the vertical connecting steel bars, and finally, the concrete is cast in situ, so that the reliability of the bridge pier connection position and the integrity of the bridge pier after construction are greatly improved.
2. The prefabricated spliced pier adopting the corrugated pipe grouting and tenon core socket-spigot combination has good energy consumption capability and self-resetting capability, can be suitable for earthquake multiple areas, and has good earthquake resistance; and filling high-performance concrete materials into grouting gaps in the plastic hinge area at the bottom of the pier body, so that the crack resistance and bearing capacity of the fabricated pier are improved.
3. The bridge pier template is a double-sided superposed precast concrete template, and is cast-in-situ with the cavity concrete as a part of the bridge pier during construction to be integrated, so that the steel template of the traditional cast-in-situ bridge pier is replaced, the template is not required to be dismantled after construction, the use of steel is reduced, the construction cost is saved, and the construction efficiency is effectively improved.
4. The invention adopts the double-sided and overlapped assembly type bridge pier to greatly improve the manufacturing quality and construction quality of the bridge pier, can reduce disturbance to the ecological environment, and is beneficial to protecting the fragile ecological environment in areas such as polar regions, plateaus and the like.
Drawings
FIG. 1 is a schematic diagram of a double-sided overlapping fabricated pier and construction method for construction in severe cold earthquake multiple areas.
Fig. 2 is a top view of a double-sided overlapping fabricated pier and a construction method thereof, which can be used for construction of a severe cold earthquake multiple area.
FIG. 3 is a front view of a double-sided overlapping assembled pier and a construction method bearing platform for construction of a severe cold earthquake multiple area.
Fig. 4 is a schematic section view of a double-sided overlapping assembled pier and construction method for construction in a severe cold earthquake multiple region.
FIG. 5 is a schematic diagram of three types of prefabricated slabs used for double-sided overlapping assembly type bridge pier and construction method for construction of multiple areas of severe cold earthquakes.
FIG. 6 is a schematic diagram of a double-sided overlapping fabricated pier and construction method construction flow for construction of multiple areas of severe cold earthquakes
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the overall layout and detailed construction diagram of the invention are shown in fig. 1-5, and fig. 6 is a schematic diagram of the flow of the invention in bridge pier construction. The invention comprises seventeen parts, namely a bearing platform (1), a socket post (2), a grouting hole (3), a corrugated pipe grouting sleeve (4), a double-sided superposed concrete template (5), a longitudinal rib sleeve (6), a longitudinal rib (7), a V-shaped lacing wire (8), a capping beam (9), cast-in-place concrete (10), a vertical wet joint (11), a vertical connecting steel bar (12), a horizontal steel bar (13), an I-shaped precast slab (14), a II-shaped precast slab (15), a III-shaped precast slab (16) and a bent hook (17). In a specific construction process, the I-type precast slab (14), the II-type precast slab (15) and the III-type precast slab (16) are subjected to factory standardized prefabrication, and the space position of the V-shaped lacing wire (8) is required to be paid attention to during factory prefabrication so as to facilitate assembly between bridge pier segments. When in site construction, firstly, a grouting hole (3) and a positioning corrugated pipe grouting sleeve (4) are reserved when a bearing platform (1) is poured, then an I-type precast slab (14), an II-type precast slab (15) and a III-type precast slab (16) are combined through hooks (17) at the left end and the right end of a horizontal steel bar (13) of the III-type precast slab (16) and a vertical connecting steel bar (12), three types of templates are completely spliced, the outer sides of the three types of templates are filled through cast-in-situ wet joints (11), a double-sided laminated concrete template (5) is obtained, the double-sided laminated concrete template (5) is connected with the bearing platform (1) through an overhanging part of a longitudinal rib (7) and the corrugated pipe grouting sleeve (4), and high-performance concrete is poured into the corrugated pipe grouting sleeve (4) through the grouting hole (3) after splicing is completed, so that the integrity of the bridge pier and the bearing platform (1) is improved. The bridge pier segments are connected by adopting longitudinal ribs (7), longitudinal rib sleeves (6) and vertical connecting steel bars (12) so as to ensure the integrity between the bridge pier segments. And finally, performing field construction of the bent cap (9). The whole process comprises the bearing platform (1), the double-sided laminated concrete template (5) and the inner cavity cast-in-place concrete (10), wherein the adopted concrete keeps consistent strength, and can be rapidly solidified and hardened in a special complex environment, so that the integrity and durability of the bridge pier are ensured, and the site construction efficiency is improved. The above parts work together and coordinate with each other to form the double-sided overlapped assembled bridge pier which can be used for construction of high-cold earthquake multiple areas and the construction method.
The construction method of the double-sided superposed assembled pier comprises two stages:
and (3) assembling bridge pier segments: based on the bearing platform (1), splicing double-sided superposed concrete templates on the bearing platform, namely vertically positioning and splicing an I-type precast slab (14), a II-type precast slab (15) and a III-type precast slab (16) through a corrugated pipe grouting sleeve (4) reserved on the bearing platform; the space positioning of three templates is carried out through hooks (17) at the left end and the right end of a horizontal steel bar (13) and a vertical connecting steel bar (12) of a III-type precast slab (16) to assemble bridge pier segments, and the outer sides of the three templates are filled through cast-in-situ wet joints (11).
And (3) a cast-in-place concrete stage: after the whole bridge pier is assembled, concrete is poured into the cavity of the double-sided laminated concrete slab of the bridge pier, and the concrete and the bridge pier segments in the first stage form an integrally stressed laminated assembly type bridge pier. Thus, the invention completes the complete construction of one segment. And the two stages reciprocate until the construction of the whole pier is completed.
In the bridge pier construction, the double-sided laminated slab is not only a template, but also a main stress member, and the double-sided laminated slab and the inner cavity concrete form a whole to bear the load after the construction is completed. Therefore, the method can play a role in reducing engineering cost and saving resources.
Although the present invention has been shown and described with respect to a certain embodiment or aspects thereof, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (4)
1. A double-sided overlapped assembled pier for construction in severe cold earthquake multiple areas and a construction method. Including cushion cap (1), socket joint post (2), grout hole (3), bellows grout sleeve (4), double-sided coincide concrete form (5), indulge muscle sleeve (6), indulge muscle (7), V type lacing wire (8), bent cap (9), cast in situ concrete (10), vertical wet seam (11), vertical connecting reinforcement (12), horizontal reinforcement (13), I type prefabricated plate (14), II type prefabricated plate (15), III type prefabricated plate (16), crotch (17) seventeen parts are constituteed, characterized by:
the I-type prefabricated plate (14), the II-type prefabricated plate (15) and the III-type prefabricated plate (16) are prefabricated in a standardized manner in a factory, and the space positions of V-shaped lacing wires (8) of the I-type prefabricated plate (14) and the II-type prefabricated plate (15) are staggered when the factory is prefabricated, so that connection with hooks (17) on the III-type prefabricated plate (16) is ensured. The four sides of the bearing platform (1) are respectively provided with a grouting hole (3), and the grouting holes (3) are arranged on the central axis of the bearing platform (1) and are positioned at the same level with the bottom of the corrugated pipe grouting sleeve (4), so that high-performance concrete is pressed into the corrugated pipe grouting sleeve (4) through the grouting holes (3). The spigot-and-socket column (2) is positioned at the right center of the bearing platform (1) and completes construction together with the bearing platform (1). The I-type prefabricated plate (14), the II-type prefabricated plate (15) and the III-type prefabricated plate (16) are combined through hooks (17) at the left end and the right end of a horizontal steel bar (13) of the III-type prefabricated plate (16) and a vertical connecting steel bar (12), so that three types of templates are completely spliced, and the outer sides of the three types of templates are filled through cast-in-situ wet joints (11). The upper end of the template is provided with a longitudinal rib sleeve (6) which corresponds to the overhanging part of the longitudinal rib (7) at the lower end of the template one by one. And the bridge pier segments are connected by adopting longitudinal ribs (7), longitudinal rib sleeves (6) and vertical connecting steel bars (12), and cast-in-place concrete (10) is filled between the double-sided superposed concrete templates (5) so as to ensure the integrity between the bridge pier segments. And after the bridge pier construction is completed, the construction of the capping beam (9) is performed, so that the integrity of the bearing platform (1), the bridge pier and the capping beam (9) is ensured.
2. The double-sided overlapping fabricated pier and the construction method thereof, which can be used for construction of severe cold earthquake multiple areas, according to claim 1. The method is characterized in that the precast concrete template is used as a part of a pier to be cast-in-situ with the concrete in the inner cavity to form a whole during construction, the template is not required to be dismantled after construction, and the precast concrete template and the inner cavity are stressed integrally.
3. The double-sided overlapping fabricated pier and the construction method thereof, which can be used for construction of severe cold earthquake multiple areas, according to claim 1. The bridge pier is characterized in that three templates are connected by adopting vertical connecting steel bars, longitudinal steel bar sleeves and vertical connecting steel bars are adopted among the segments to connect, and inner cavity cast-in-place concrete is used for completing the integral construction of bridge pier segments.
4. The double-sided overlapping fabricated pier and the construction method thereof, which can be used for construction of severe cold earthquake multiple areas, according to claim 1. The method is characterized in that a prefabricated assembly pier with a corrugated pipe grouting and tenon core socket and spigot combined mode is adopted between a bearing platform and the pier, and a high-performance concrete material is filled in grouting gaps of a plastic hinge area at the bottom of a prefabricated pier body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310553141.5A CN117026785A (en) | 2023-05-17 | 2023-05-17 | Double-sided overlapped assembled bridge pier for construction of severe cold earthquake multiple areas and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310553141.5A CN117026785A (en) | 2023-05-17 | 2023-05-17 | Double-sided overlapped assembled bridge pier for construction of severe cold earthquake multiple areas and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117026785A true CN117026785A (en) | 2023-11-10 |
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ID=88636029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310553141.5A Pending CN117026785A (en) | 2023-05-17 | 2023-05-17 | Double-sided overlapped assembled bridge pier for construction of severe cold earthquake multiple areas and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117026785A (en) |
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2023
- 2023-05-17 CN CN202310553141.5A patent/CN117026785A/en active Pending
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Effective date of registration: 20240604 Address after: 100038 No. 10 Fuxing Road, Haidian District, Beijing Applicant after: China National Railway Group Co.,Ltd. Country or region after: China Applicant after: Lanzhou Jiaotong University Applicant after: CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. Applicant after: CARS RAILWAY ENGINEERING Research Institute Address before: 730070 No. 88 Anning West Road, Anning District, Gansu, Lanzhou Applicant before: Lanzhou Jiaotong University Country or region before: China |