CN117005305B - Construction method for constructing upper capping beam in prestressed concrete common pier section - Google Patents
Construction method for constructing upper capping beam in prestressed concrete common pier section Download PDFInfo
- Publication number
- CN117005305B CN117005305B CN202310822318.7A CN202310822318A CN117005305B CN 117005305 B CN117005305 B CN 117005305B CN 202310822318 A CN202310822318 A CN 202310822318A CN 117005305 B CN117005305 B CN 117005305B
- Authority
- CN
- China
- Prior art keywords
- bent cap
- main body
- construction
- constructing
- connecting section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 84
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 45
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- E01D21/10—Cantilevered erection
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The application discloses a construction method for constructing an upper capping beam in a prestressed concrete common pier section, wherein pile foundations and lower pier columns are constructed through lines, and a main road is normally communicated; then constructing a lower capping beam connecting section at the top of the lower pier columns; in the adjacent lower pier stud, the opposite side of the connecting section of the lower bent cap is a joint surface, and exposed steel bars are reserved on the joint surface and are used for connecting the main body of the lower bent cap in the subsequent steps; then constructing an upper pier column and an upper bent cap main body, and then completing the construction of the bridge deck of the overline bridge above the upper bent cap main body; blocking a main road below a construction position of a main body of the lower-layer bent cap, and passing a bridge over a line above the upper-layer bent cap; and constructing a lower bent cap, wherein exposed steel bars are buried in the lower bent cap main body, and finishing the bridge deck construction of the overline bridge above the lower bent cap main body after the lower bent cap main body is cast and molded. The application has the effect of reducing the influence of construction on the normal passing of vehicles while ensuring the construction efficiency.
Description
Technical Field
The application relates to the field of double-layer bent cap construction, in particular to a construction method for constructing an upper-layer bent cap at the pre-stressed concrete common pier section.
Background
In the related art, two overline bridges are arranged on a main road, wherein piers at the junction of the main road and the two overline bridges are common pier segments, the common pier segments are of a double-layer capping beam structure, the main road passes through the lower side of a lower-layer capping beam, an upper-layer capping beam and a lower-layer capping beam support the two overline bridges respectively, in double-layer capping beam construction, the main road is generally plugged, a construction area is enclosed, then auxiliary roads are constructed for vehicles to pass through, then a plurality of lower-layer pier columns are constructed in the construction area, a floor type support is built between the adjacent lower-layer pier columns, then a pouring template of the lower-layer capping beam is built on the floor type support, the pouring template spans the tops of the lower-layer pier columns, and then the upper-layer pier columns and the upper-layer capping beam are constructed.
With respect to the related art in the above, there are the following drawbacks: construction auxiliary road has influenced the construction progress of national road swiftly transformation, and arterial road traffic is big moreover, and temporary auxiliary road can not fine satisfy the traffic requirement of a large amount of vehicles, if utilize side hypomere pier stud to build the support of encorbelmenting and carry out lower floor's bent cap construction, still can exist the headroom and do not satisfy the current problem of large-scale vehicle, therefore still has the improvement room.
Disclosure of Invention
The application provides a construction method for constructing an upper capping beam in advance in a prestressed concrete common pier section, which aims to ensure construction efficiency and reduce the influence of construction on normal traffic of vehicles.
The construction method for constructing the upper capping beam in the prestressed concrete common pier section firstly adopts the following technical scheme:
the construction method for constructing the upper capping beam in the prestressed concrete common pier section comprises the following steps:
s1: constructing pile foundations and lower pier studs, and normally traffic the main road;
S2: constructing a lower layer bent cap connecting section: constructing a lower capping beam connecting section at the top of a plurality of lower pier columns; in the adjacent lower pier stud, the opposite side of the lower bent cap connecting section is a joint surface between the lower bent cap connecting section and two ends of the lower bent cap main body, and exposed steel bars are reserved on the joint surface and are used for connecting the lower bent cap main body in the subsequent steps;
s3: constructing an upper pier column and an upper bent cap main body, and then finishing bridge deck construction of the overline bridge above the upper bent cap main body;
S4: blocking a main road below a construction position of a main body of the lower-layer bent cap, and passing a bridge over a line above the upper-layer bent cap;
S5: and constructing a lower bent cap, wherein exposed steel bars are buried in the lower bent cap main body, and finishing the bridge deck construction of the overline bridge above the lower bent cap main body after the lower bent cap main body is cast and molded.
By adopting the technical scheme, the pile foundation and the lower pier stud are constructed firstly, at the stage, the main road can still normally pass, then the bent cap connecting section is constructed, then the upper pier stud and the upper bent cap are constructed continuously, and the bridge deck construction of the bridge deck above the upper bent cap main body is completed, in the construction process, the main road can still pass, thereby reducing the influence of the construction on the normal passing of vehicles, simultaneously, after the bridge deck above the upper bent cap passes, the vehicle flow can be led into the bridge of the upper deck, the problem of insufficient clearance caused by the prior construction of the lower bent cap is avoided, meanwhile, the lower bent cap is firstly constructed to serve as the connecting section, and the exposed reinforcing steel bars are reserved at one side of the bent cap connecting section and used for connecting the lower bent cap main body in the subsequent steps, so that the construction problem of the lower bent cap is solved under the condition that the upper bent cap is firstly constructed, and the influence of the construction on the normal passing of vehicles is reduced while the construction efficiency is ensured.
Preferably, the joint surface of the connecting section of the lower capping beam protrudes out of the peripheral surface of the lower pier stud.
By adopting the technical scheme, the connecting section of the lower-layer bent cap is constructed as long as possible on the premise of not extruding the driving space of the main road so as to facilitate the subsequent construction of the main body of the lower-layer bent cap.
Preferably, a plurality of exposed steel bars of the connecting sections of the two adjacent bent caps are in one-to-one correspondence, and the two corresponding exposed steel bars are connected through the connecting steel bars.
Through adopting above-mentioned technical scheme to extend to exposing the reinforcing bar, form the reinforced structure between lower floor's bent cap linkage segment and the lower floor's bent cap main part jointly, be favorable to improving the steadiness of lower floor's bent cap.
Preferably, a plurality of exposed steel bars of the connecting section of the lower bent cap extend out of the joint surface in a staggered manner by 1m and 0.5m.
By adopting the technical scheme, the connection weak points of the exposed steel bars and the connection steel bars are staggered orderly, and the connectivity of the lower-layer bent cap connecting section and the lower-layer bent cap main body is improved.
Preferably, in the step S2, the outer circumferential surface of the exposed reinforcing steel bar is coated with a rust-resistant protective layer; and (3) before pouring the lower-layer bent cap main body in the step (S5), roughening the joint surface and derusting the exposed steel bars.
Through adopting above-mentioned technical scheme, reduce the outdoor impaired degree of exposing the reinforcing bar, be favorable to improving the connection steadiness of lower bent cap linkage segment and lower bent cap main part simultaneously.
Preferably, a plurality of holes are reserved in the construction of the connecting section of the lower bent cap of the S2, and in the casting construction of the main body of the lower bent cap of the S5, the steel hinge line penetrates through the holes and performs prestress tensioning.
Through adopting above-mentioned technical scheme, add pulling force in advance in the construction of lower bent cap main part for the lower bent cap main part that is exerted prestressing force tensioning bears compressive stress, and then makes it produce certain deformation, handles the load that structure itself received, including load, wind load, snow load, the seismic load effect of lower bent cap main part self weight.
Preferably, in the step S2, steel sleeves are respectively embedded in the inner side walls of the two ends of the hole.
By adopting the technical scheme, the structural safety of the lower bent cap connecting section at the hole position can be improved by the steel sleeve.
Preferably, in the step S2, a template is set up on top of the lower pier stud, the template includes two side dies and two end dies, in the template, the end dies are attached to the joint surface of the connecting section of the lower capping beam, the inner side of the end die is provided with a protruding part for the steel sleeve to be sleeved; and after the construction of the lower bent cap connecting section is completed, the template is removed, and the protruding part is extracted from the steel sleeve.
Through adopting above-mentioned technical scheme, the bellying of end mould inside plays the locate action to the steel sleeve, is favorable to in concrete placement process, reduces the condition that the steel sleeve takes place to shift.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The bridge deck construction of the overline bridge above the upper bent cap main body is completed by constructing the pile foundation and the lower pier column firstly, then constructing the bent cap connecting section, and then continuing to construct the upper pier column and the upper bent cap, wherein in the construction process, a main road can still pass, so that the influence of the construction on the normal passing of vehicles is reduced, meanwhile, after the overline bridge above the upper bent cap is passed, traffic flow can be led into the overline bridge above, the problem of insufficient clearance caused by the construction of the lower bent cap firstly is avoided, and the exposed steel bars are reserved at one side of the bent cap connecting section and used for connecting the lower bent cap main body in the subsequent steps, so that the construction problem of the lower bent cap is solved under the condition that the upper bent cap is firstly constructed, and the influence of the construction on the normal passing of vehicles is reduced while the construction efficiency is ensured;
2. The method comprises the steps that a plurality of holes are reserved in the construction of a connecting section of a lower bent cap, a steel hinge line penetrates through the holes and performs prestress tensioning in the pouring construction of the lower bent cap, and tension is added in advance in the construction of the lower bent cap, so that the lower bent cap subjected to prestress tensioning is subjected to compressive stress, and further is deformed to a certain extent, and the load applied to the structure is dealt with;
3. Setting up a template on the top of the lower pier stud, wherein a bulge is arranged on the inner side of the end mould and is used for sleeving a steel sleeve; after the construction of the lower bent cap connecting section is completed, the template is removed, the protruding part is pulled out from the inside of the steel sleeve, the protruding part in the end die plays a role in positioning the steel sleeve, and the situation that the steel sleeve is shifted is reduced in the concrete pouring process.
Drawings
Fig. 1 is a construction method for constructing an upper capping beam in advance in a prestressed concrete common pier segment according to an embodiment of the present application.
Fig. 2 is a construction method for constructing an upper capping beam in advance in a prestressed concrete common pier segment according to an embodiment of the present application.
Fig. 3 is a construction method for constructing an upper capping beam in advance in a prestressed concrete common pier segment according to an embodiment of the present application.
FIG. 4 is a construction method of a prestressed concrete common pier segment construction upper capping beam according to an embodiment of the present application
Reference numerals illustrate: 1. a lower pier column; 2. a lower layer bent cap connecting section; 21. a hole; 22. a joint surface; 3. an upper pier column; 4. an upper capping beam; 5. a lower capping beam main body; 6. exposing the reinforcing steel bars; 7. connecting steel bars; 8. a straight threaded sleeve; 9. a bellows; 10. end molding; 11. a boss; 12. a steel sleeve.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses a construction method for constructing an upper capping beam in a prestressed concrete common pier section. The method comprises the following steps:
S1: referring to fig. 1 and 2, pile foundation and lower pier stud 1 are constructed first, and during the construction process, the main road is normally in traffic. The pile foundation adopts a rotary digging pile, the lower pier column 1 is connected with a pile foundation through a bearing platform, and the bearing platform adopts a slope releasing and soil retaining plate for digging; the lower pier column 1 adopts a steel mould to build a bracket for sectional construction, and the concrete structure adopts cast-in-place construction. If the co-dun section is adjacent to the subway, permanent steel casings with different lengths are required to be arranged on pile foundations of the co-dun section, cement stirring piles are adopted for pretreatment around the pile foundations, and influence on the subway structure is reduced as much as possible.
S2: referring to fig. 1 and 2, the lower capping beam connection section 2 is constructed: and constructing a lower capping beam connecting section 2 at the top of the lower pier studs 1. In the adjacent lower pier stud 1, the opposite side of the lower bent cap connecting section 2 is a joint surface 22 between the lower bent cap connecting section 2 and two ends of the lower bent cap main body 5. The joint surface 22 protrudes from the outer sidewall 1m of the lower pier stud 1. So that the lower layer bent cap is constructed as long as possible without extruding the main road space.
Referring to fig. 2 and 3, the joint surface 22 is reserved with a plurality of exposed reinforcing bars 6, and the exposed reinforcing bars 6 are staggered to extend out of the joint surfaces 221m and 0.5m, so that the connection weak points of the exposed reinforcing bars 6 and the connection reinforcing bars 7 are staggered in order. The exposed reinforcing bars 6 are used to connect the lower bent cap body 5 in a subsequent step. In addition, a plurality of holes 21 are reserved in the construction of the lower bent cap connecting section 2, and the holes 21 penetrate through the joint surface 22 so that steel hinge wires can penetrate through the holes 21 and prestress tensioning is carried out on the lower bent cap main body in the subsequent pouring construction of the lower bent cap main body.
Referring to fig. 2 and 4, specifically, when constructing the lower capping beam connecting section 2, a template is firstly erected on the top of the lower pier stud 1, steel bars are bound in the template, the template comprises two opposite side dies and two end dies 10, the end dies 10 are attached to the joint surface 22 of the lower capping beam connecting section 2, wherein a protruding part 11 is fixed on the inner side of the end die 10, the protruding part 11 is used for sleeving a steel sleeve 12, and the protruding part 11 plays a role in positioning the steel sleeve 12. The two end dies 10 are provided with a plurality of steel sleeves 12 in the inner side, the two corresponding steel sleeves 12 are connected with corrugated pipes, the corrugated pipe 9 is a metal corrugated pipe, and the metal corrugated pipe has the advantages of high deformation resistance and high breaking resistance. So that a hole 21 is formed in the lower bent cap connecting section 2 after the casting is completed. The steel sleeve 12 is fixed with the steel bar binding of the lower layer bent cap connecting section 2, and the steel bar of the lower layer bent cap connecting section 2 plays a role in supporting and stabilizing the steel sleeve 12.
In addition, the end face of the end die 10 is penetrated with a plurality of through holes for the exposed steel bars 6 to pass through along the thickness direction of the end die, after the concrete of the lower-layer bent cap connecting section 2 is poured, the exposed steel bars 6 are embedded in the concrete of the lower-layer bent cap connecting section 2, the end parts of the exposed steel bars 6 extend out of the joint faces 22, and the steel sleeve 12 is embedded in the holes 21. After the construction of the lower bent cap connecting section 2 is completed, the form is removed, the boss 11 is drawn out from the inside of the steel sleeve 12, and the exposed reinforcing steel bar 6 is also separated from the through hole of the end form 10.
After the pouring construction of the lower-layer bent cap connecting section 2 is completed, the periphery of the exposed reinforcing steel bar 6 is required to be coated with a rust-resistant protective layer. Specifically, the exposed reinforcing steel bar 6 is coated with cement paste, concrete with a rust inhibitor is coated outside, or the exposed reinforcing steel bar 6 is placed in an envelope containing the rust inhibitor, the oxygen inhibitor and the moisture absorber for rust prevention.
S3: referring to fig. 1 and 2, after the construction of the lower capping beam connecting section 2 is completed, the main body construction of the upper pier column 3 and the upper capping beam 4 is performed, and as with the construction of the lower pier column 1, the steel mould-building support is adopted for the sectional construction, the concrete structure is cast in situ, and the upper pier column 3 is formed on the upper surface of the lower capping beam connecting section 2. And then finishing the bridge deck construction of the overline bridge above the main body of the upper deck bent cap 4. It is emphasized that before the upper capping beam 4 is constructed, a baffle needs to be arranged below the upper capping beam 4, the baffle is installed and fixed between the upper pier columns 3 on two sides, and the baffle plays a role in protecting the traveling crane below.
S4: after the construction of the overline bridge above the upper layer bent cap 4 main body is completed, the main road below the construction position of the lower layer bent cap main body 5 is blocked, the construction road section is enclosed, then the overline bridge above the upper layer bent cap 4 main body is opened, the overline bridge passing above the upper layer bent cap 4 is realized, and traffic can be led into the overline bridge above to facilitate the construction of the lower layer bent cap main body 5.
S5: after the construction section is enclosed, the joint surface 22 is roughened and the exposed reinforcing steel bars 6 are derusted. And (3) performing construction of the lower bent cap main body 5, erecting a floor support below the construction position of the lower bent cap main body 5, and erecting a template on the floor support. And binding steel bars in the templates, wherein a plurality of exposed steel bars 6 of the connecting sections of the two adjacent bent caps are in one-to-one correspondence, joints of the exposed steel bars 6 are pre-threaded, and the two corresponding exposed steel bars 6 are connected through the connecting steel bars 7. The exposed steel bars 6 are connected with the connecting steel bars 7 through straight thread sleeves 8. Then, in the adjacent two lower bent cap connecting sections 2, two opposite steel sleeves 12 are connected through a corrugated pipe, and the corrugated pipe penetrates through the whole lower bent cap main body 5. And then the steel stranded wires penetrate through the holes 21 and penetrate through the lower bent cap connecting sections 2, and simultaneously penetrate through the corrugated pipes at the positions of the lower bent cap main bodies 5, and when the concrete of the lower bent cap main bodies 5 is poured, prestress tensioning is carried out on the lower bent cap main bodies 5.
After the pouring of the lower-layer bent cap main body 5 is completed, the exposed steel bars 6 are buried in the lower-layer bent cap main body 5, and after the pouring of the lower-layer bent cap main body 5 is formed, the bridge deck construction of the overline bridge above the lower-layer bent cap main body 5 is completed.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (4)
1. The construction method for constructing the upper capping beam in the prestressed concrete common pier section is characterized by comprising the following steps of: the method comprises the following steps:
s1: constructing pile foundations and lower pier columns (1), and normally traffic a main road;
S2: construction of a lower layer bent cap connecting section (2): constructing a lower capping beam connecting section (2) at the top of a plurality of lower pier columns (1); in the adjacent lower pier stud (1), one side of the lower bent cap connecting section (2) opposite to the lower bent cap connecting section is a joint surface (22) between the lower bent cap connecting section (2) and two ends of the lower bent cap main body (5), exposed steel bars (6) are reserved on the joint surface (22), and the exposed steel bars (6) are used for connecting the lower bent cap main body (5) in the subsequent steps;
s3: constructing an upper pier column (3) and an upper bent cap (4) main body, and then finishing bridge deck construction of the overline bridge above the upper bent cap (4) main body;
s4: blocking a main road below a construction position of a lower-layer bent cap main body (5), and passing a bridge over a flying lead above an upper-layer bent cap (4);
S5: constructing a lower-layer bent cap, burying exposed steel bars (6) in a lower-layer bent cap main body (5), pouring and forming the lower-layer bent cap main body (5), and then finishing bridge deck construction of a bridge span above the lower-layer bent cap main body (5);
the joint surface (22) of the lower cover beam connecting section (2) protrudes out of the outer side wall of the lower pier column (1);
reserving a plurality of holes (21) in the construction of the lower bent cap connecting section of the S2, and enabling a steel hinge line to penetrate through the holes (21) and perform prestress tensioning in the casting construction of the S5 lower bent cap main body;
In the step S2, steel sleeves (12) are respectively embedded in the inner side walls at the two ends of the hole (21);
In the S2, a template is erected on the top of the lower pier stud (1), the template comprises two side dies and two end dies (10), in the template, the end dies (10) are attached to a joint surface (22) of the lower bent cap connecting section (2), a protruding part (11) is arranged on the inner side of the end die (10), and the protruding part (11) is sleeved with a steel sleeve (12); after the construction of the lower bent cap connecting section is completed, the template is removed, and the protruding part (11) is pulled out from the inside of the steel sleeve (12).
2. The construction method for constructing the upper capping beam (4) in the prestressed concrete common pier segment firstly according to claim 1, which is characterized by comprising the following steps: the exposed steel bars (6) of the adjacent two bent cap connecting sections are in one-to-one correspondence, and the two corresponding exposed steel bars (6) are connected through the connecting steel bars (7).
3. The construction method for constructing the upper capping beam (4) in the prestressed concrete common pier segment firstly according to claim 1, which is characterized by comprising the following steps: the exposed steel bars (6) of the lower bent cap connecting section (2) are staggered to extend out of the joint surface (22) for 1m and 0.5m.
4. The construction method for constructing the upper capping beam (4) in the prestressed concrete common pier segment firstly according to claim 1, which is characterized by comprising the following steps: in the step S2, the periphery of the exposed reinforcing steel bar (6) is coated with a rust-resistant protective layer; before pouring the lower-layer bent cap main body (5) in the step S5, roughening the joint surface (22) and derusting the exposed reinforcing steel bars (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310822318.7A CN117005305B (en) | 2023-07-05 | 2023-07-05 | Construction method for constructing upper capping beam in prestressed concrete common pier section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310822318.7A CN117005305B (en) | 2023-07-05 | 2023-07-05 | Construction method for constructing upper capping beam in prestressed concrete common pier section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117005305A CN117005305A (en) | 2023-11-07 |
| CN117005305B true CN117005305B (en) | 2024-06-18 |
Family
ID=88561129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310822318.7A Active CN117005305B (en) | 2023-07-05 | 2023-07-05 | Construction method for constructing upper capping beam in prestressed concrete common pier section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117005305B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796195A (en) * | 2020-12-18 | 2021-05-14 | 中铁上海工程局集团有限公司 | Long-connection multi-span double-layer intercity railway cross box girder bridge and construction method thereof |
| CN217104732U (en) * | 2022-01-17 | 2022-08-02 | 中铁西安勘察设计研究院有限责任公司 | Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier |
| CN219099785U (en) * | 2022-11-04 | 2023-05-30 | 重庆市市政设计研究院有限公司 | Hole forming and positioning device for prestressed pipe on end face of segmental box girder |
| CN117051700A (en) * | 2023-07-05 | 2023-11-14 | 中国铁建港航局集团有限公司 | Construction method of prestress system of pier stud reserved post-pouring capping beam |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208668279U (en) * | 2018-04-30 | 2019-03-29 | 安徽省公路桥梁工程有限公司 | Pier cap beam anchor ear girder steel template system |
| CN109267439B (en) * | 2018-11-02 | 2024-03-15 | 江苏沪宁钢机股份有限公司 | Efficient and stable three-layer viaduct and construction process thereof |
| CN209260531U (en) * | 2018-11-18 | 2019-08-16 | 厦门市市政工程设计院有限公司 | The dual deck bridge of motor vehicle and non-motor vehicle layering circulation |
| CN110184950B (en) * | 2019-05-21 | 2021-02-09 | 宁波市政工程建设集团股份有限公司 | Construction method for rebuilding and expanding new bridge at original site of bridge under condition of ensuring communication |
| CN111827092A (en) * | 2020-06-29 | 2020-10-27 | 中国国家铁路集团有限公司 | Prefabricated assembled hollow pier suitable for being provided with diaphragm plate and construction method |
| CN113585076A (en) * | 2021-07-08 | 2021-11-02 | 中国建筑第六工程局有限公司 | Construction method of overwater large-span double-layer cast-in-place beam |
| CN113718636B (en) * | 2021-09-09 | 2023-05-26 | 江苏沪宁钢机股份有限公司 | Special-shaped double-layer tower bridge structure and manufacturing method thereof |
| CN115369749A (en) * | 2022-09-20 | 2022-11-22 | 浙江交工集团股份有限公司 | Pier column-beam-bent cap beam integrated public rail double-layer viaduct and construction method |
| CN219175013U (en) * | 2022-11-21 | 2023-06-13 | 中建八局西北建设有限公司 | Whole support that moves down of double-deck overhead bridge |
-
2023
- 2023-07-05 CN CN202310822318.7A patent/CN117005305B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796195A (en) * | 2020-12-18 | 2021-05-14 | 中铁上海工程局集团有限公司 | Long-connection multi-span double-layer intercity railway cross box girder bridge and construction method thereof |
| CN217104732U (en) * | 2022-01-17 | 2022-08-02 | 中铁西安勘察设计研究院有限责任公司 | Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier |
| CN219099785U (en) * | 2022-11-04 | 2023-05-30 | 重庆市市政设计研究院有限公司 | Hole forming and positioning device for prestressed pipe on end face of segmental box girder |
| CN117051700A (en) * | 2023-07-05 | 2023-11-14 | 中国铁建港航局集团有限公司 | Construction method of prestress system of pier stud reserved post-pouring capping beam |
Non-Patent Citations (1)
| Title |
|---|
| 城市跨线上下层桥梁交叉施工技术;黄江;西部交通科技;20200315(第3期);第127-129页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117005305A (en) | 2023-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102203346B (en) | Construction method of steel composite girder bridge | |
| CN105735112B (en) | Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier | |
| CN106869012B (en) | Using the prefabricated thin-wall bent cap of prestressing with bond system | |
| CN108532445A (en) | A kind of connecting structure and its construction method of prefabricated bent cap and Precast Pier Columns | |
| CN113279324A (en) | Semi-prefabricated UHPC-NC combined cover beam connecting structure and assembling method | |
| CN106012872B (en) | Continuous rigid frame bridge without dorsal funciculus oblique pull reinforcement system and construction method | |
| CN106436591A (en) | Steel cantilever combined bridge deck slab widening and reconstruction structure and construction method thereof | |
| CN114922360B (en) | Device for prefabricating and cast-in-situ combination of roof cornice structure and construction method thereof | |
| CN113005926A (en) | Construction method of mountain area abrupt slope pier reinforcing device | |
| CN117051700B (en) | Construction method of prestress system of pier stud reserved post-pouring capping beam | |
| CN206655141U (en) | A kind of steel cantilever combined bridge deck widens reconstruction structure | |
| CN117005305B (en) | Construction method for constructing upper capping beam in prestressed concrete common pier section | |
| CN211498430U (en) | Stayed-cable steel truss through-center type arch bridge | |
| CN219808247U (en) | Assembled bridge pier | |
| CN208668249U (en) | A kind of connecting structure of prefabricated bent cap and Precast Pier Columns | |
| CN209873809U (en) | Foundation pit limb platform system | |
| CN116289521A (en) | Split prefabricated assembled bridge and construction method thereof | |
| CN214328478U (en) | Three-tower self-anchored suspension bridge | |
| CN111996899B (en) | Method for building large-span channel in artificial landscape mountain | |
| CN111963203B (en) | Elevated single-column station in high-intensity area and construction method thereof | |
| CN211897785U (en) | Bias-pressure subway station and viaduct combined construction structure | |
| CN107142830A (en) | Steel pipe web prestressing force steel reinforced concrete combines main beam structure and construction method | |
| CN211080285U (en) | Outrigger type embedded column base structure for reducing height of bearing platform | |
| CN113863353A (en) | Three-way high-strength bolt joint of assembled pile plate structure roadbed and construction method thereof | |
| CN113403944A (en) | Steel-concrete torsion tower structure and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |