CN114395985A - Concrete prestressed pipeline mud jacking exhaust hole structure and construction method thereof - Google Patents
Concrete prestressed pipeline mud jacking exhaust hole structure and construction method thereof Download PDFInfo
- Publication number
- CN114395985A CN114395985A CN202210075762.2A CN202210075762A CN114395985A CN 114395985 A CN114395985 A CN 114395985A CN 202210075762 A CN202210075762 A CN 202210075762A CN 114395985 A CN114395985 A CN 114395985A
- Authority
- CN
- China
- Prior art keywords
- pipe
- prestressed
- pipeline
- concrete
- exhaust
- 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.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims description 21
- 239000004568 cement Substances 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052742 iron Inorganic materials 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000002026 carminative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- 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)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a concrete prestressed pipeline grouting exhaust hole structure and a construction method thereof. The exhaust pipe comprises a head part and a rod part provided with external threads, and is used as an exhaust hole, so that the problem that the subsequent steel strand penetrating pipe installation is influenced by using the existing bent iron pipe as the exhaust hole is solved, the technical requirement of effective exhaust during the grouting of the prestressed pipeline can be met, and the construction quality is improved. The invention has the advantages of simple and convenient construction operation and capability of reducing the construction cost.
Description
Technical Field
The invention belongs to cast-in-situ prestressed reinforced concrete continuous beam engineering, and particularly relates to a concrete prestressed pipeline mud jacking exhaust hole structure and a construction method thereof.
Background
Prestressed pipe grouting is a key process in bridge engineering. Referring to fig. 1, a hanging basket suspension casting prestressed continuous beam 2 or a connecting line rigid frame bridge, a support cast-in-place continuous beam and the like have a plurality of longitudinal prestressing, wherein a part of the longitudinal prestressing is symmetrical vertical bending bundles, a construction process of pre-embedding a prestressed pipeline 3 and then penetrating a steel strand to stretch the prestressing is adopted, and the top point of the prestressed pipeline 3 is arranged near the top of a pier 1. According to the requirements of the technical Specifications for highway bridge and culvert construction, the pipeline is provided with exhaust holes at each vertex. At present, the vent hole of the prestressed pipeline of the hanging basket suspension casting beam is usually installed by adopting an iron bending pipe with the inner diameter phi of 20mm, a corrugated pipe at the vertex part is perforated, the iron bending pipe is inserted and then bound and fixed by an electric adhesive tape, a transparent adhesive tape and the like, and the iron bending pipe is connected with a plastic pipe to be led out of a structure. When the hanging basket is used for cantilever casting construction of a beam section, the longitudinal prestressed tendons (steel strands) need to be installed well in the prestressed pipeline of the beam section and installed after concrete is poured. The depth of the bent iron pipe inserted into the corrugated pipe is difficult to control by adopting the construction process of the bent iron pipe, the bent iron pipe inserted into the pipeline has great obstruction influence on subsequent steel strand penetration, particularly the penetration of the steel strand is seriously hindered when the insertion depth is large, in addition, the number of longitudinal prestressed pipelines is large, the high points of vertical curves are concentrated at the top part of a pier, and the influence of the exhaust pipes of phi 20mm plastic pipes which are concentrated together on the size of a concrete section is also great. Meanwhile, the cost for installing the bent iron pipe exhaust hole is high, more adhesive tapes are needed for winding for binding and fixing, and the concrete is easy to form the defect of a weak interlayer. If a rigid plastic pipe is directly and obliquely inserted into the prestressed pipeline to serve as an exhaust hole, the cost is lower than that of the installation of the bent iron pipe, but the cast-in-place bridge with the bracket is only suitable for the construction of firstly installing the steel strand and then pouring concrete, and is not suitable for the suspended-basket cast-in-place bridge or not through the steel strand.
Disclosure of Invention
The invention aims to provide a concrete prestressed pipeline mud jacking exhaust hole structure capable of reducing cost, improving efficiency and ensuring quality and a construction method thereof.
The technical scheme for realizing the purpose of the invention is as follows:
the invention provides a concrete prestressed pipe mud jacking exhaust hole structure which comprises a prestressed pipe and an exhaust pipe arranged on the prestressed pipe, wherein the exhaust pipe comprises a head part and a rod part, the outer diameter of the rod part is smaller than that of the head part, the rod part is provided with external threads, the rod part of the exhaust pipe penetrates through the prestressed pipe outwards, and the rod part is fixed outside the prestressed pipe through the matching of a screw cap and the rod part.
The prestressed pipeline comprises a joint pipe and corrugated pipes connected to two ends of the joint pipe, and the exhaust pipe is arranged on the joint pipe.
The end part of the rod part is connected with an air pipe made of flexible materials.
The invention provides a construction method of a concrete prestressed pipeline mud jacking exhaust hole structure, which comprises the following steps:
step 1, taking an exhaust pipe which comprises a head part and a rod part with an outer diameter smaller than that of the head part and provided with an external thread.
And 2, taking a joint pipe of the prestressed pipeline, drilling a hole matched with the rod part of the exhaust pipe on the joint pipe, enabling the rod part of the exhaust pipe to penetrate through the joint pipe outwards, and fixing the rod part outside the joint pipe by using a screw cap.
And 3, inserting the air pipe sleeve made of the flexible material on the rod part.
And 4, taking the manufactured joint pipe to a construction site, installing the joint pipe at the vertex of the prestressed pipeline, enabling the hole of the air pipe to be upward, connecting two ends of the joint pipe with the corrugated pipe of the prestressed pipeline, positioning and fixing the joint pipe and the corrugated pipe which form the prestressed pipeline, leading the air pipe out of the concrete surface of the structure to be not less than 40cm, and ensuring that the air pipe is not bent and blocked in the structure.
And 5, after the steel strand passes through the prestressed pipeline and is subjected to prestress tensioning, injecting cement slurry into the prestressed pipeline, discharging compressed air in the prestressed pipeline by an air pipe during cement slurry injection, discharging cement slurry finally, bending the exposed air pipe after discharging qualified cement slurry, sealing and discharging the slurry, keeping the pressure of the cement slurry in the prestressed pipeline for solidification, and cutting off the exposed air pipe after the cement slurry in the prestressed pipeline is solidified.
In the step 1, the exhaust pipe is manufactured by drilling a through hole by using a countersunk head bolt, wherein a screw head and a screw of the countersunk head bolt are respectively used as a head part and a rod part of the exhaust pipe, and the aperture of the through hole is 3 mm.
Advantageous effects
The invention is suitable for concrete prestress engineering. The exhaust pipe of the portion of adopting including the head with establishing the external screw thread is as the exhaust hole, has avoided current bent iron pipe to influence the problem of follow-up steel strand wires poling installation as the exhaust hole, effective carminative technical requirement when can satisfying prestressed pipe mud jacking, and the reducible influence to the concrete cross section of trachea of flexible material promotes construction quality. The invention has simple construction operation, can reduce the construction cost and has great popularization value.
The technical scheme of the invention is further explained by combining the attached drawings.
Drawings
Fig. 1 is a schematic diagram of the application of the invention in the construction of a cast-in-situ prestressed reinforced concrete continuous beam of a bridge.
FIG. 2 is a schematic view of the grouting vent structure of the concrete prestressed pipe of the present invention.
Detailed Description
Referring to fig. 1 and 2, the concrete prestressed pipe mud jacking vent hole structure provided by the invention comprises a prestressed pipe 3 and an exhaust pipe 4 arranged on the prestressed pipe 3, wherein the exhaust pipe 4 comprises a head part 401 and a rod part 403 with external threads and smaller in outer diameter than the head part 401, the rod part 403 of the exhaust pipe 4 penetrates through the prestressed pipe 3 from inside to outside, and the rod part 403 is fixed outside the pipe by matching a nut 402 and the rod part 403; the prestressed pipeline 3 comprises a joint pipe 301 and corrugated pipes 302 connected to two ends of the joint pipe 301, and the exhaust pipe 4 is arranged on the joint pipe 301; the end of the rod 403 is connected to a gas tube 5 of flexible material.
The exhaust pipe is manufactured by drilling through a full-wire M7-50 countersunk head bolt.
The invention provides a construction method of a concrete prestressed pipeline mud jacking exhaust hole structure (see figures 1 and 2), which comprises the following steps:
step 1, drilling a full-thread M7-50 countersunk head bolt from a screw head to a screw rod to form a through hole serving as an exhaust pipe 4, wherein the screw head and the screw rod of the countersunk head bolt are respectively used as a head part 401 and a rod part 403 of the exhaust pipe, and the aperture of the through hole is 3 mm; the screw wall thickness after drilling was about 1.5 mm.
And 4, taking the manufactured joint pipe 301 to a construction site, installing the joint pipe at the top of the prestressed pipeline, enabling the hole of the air pipe 5 to be upward, enabling two ends of the joint pipe 301 to be reliably connected with the corrugated pipe 302 of the prestressed pipeline, positioning and fixing the joint pipe 301 and the corrugated pipe 302 which form the prestressed pipeline, leading the air pipe 5 out of the concrete surface of the structure by not less than 40cm, and ensuring that the air pipe 5 is not bent and blocked in the structure.
And 5, after the steel strand passes through the prestressed pipeline and is subjected to prestress tensioning, injecting cement slurry into the prestressed pipeline, discharging compressed air in the prestressed pipeline 3 through an air pipe 5 during cement slurry injection, discharging the cement slurry finally, bending the exposed air pipe 5 after discharging qualified cement slurry, sealing and discharging the cement slurry, keeping the pressure of the cement slurry in the prestressed pipeline 3 for solidification, and cutting off the exposed air pipe 5 after the cement slurry in the prestressed pipeline 3 is solidified.
Claims (5)
1. The utility model provides a concrete prestressing force pipeline mud jacking exhaust hole structure, includes prestressing force pipeline, establishes the blast pipe on prestressing force pipeline, characterized by the blast pipe includes that head and external diameter are less than the head and be equipped with the pole portion of external screw thread, and the pole portion of blast pipe is followed outwards pass in the prestressing force pipeline, and it is fixed with pole portion with nut and pole portion cooperation outside the tubes.
2. The concrete prestressed pipe mud jacking vent structure according to claim 1, wherein said prestressed pipe includes a joint pipe and a corrugated pipe connected to both ends of said joint pipe, said vent pipe being provided on said joint pipe.
3. The concrete prestressed pipe mud jacking vent structure according to claim 1 or 2, wherein the end of said rod portion is connected to an air tube of flexible material.
4. A construction method of a concrete prestressed pipe mud jacking vent hole structure comprises the following steps:
step 1, taking an exhaust pipe which comprises a head part and a rod part with an outer diameter smaller than that of the head part and provided with an external thread;
step 2, taking a joint pipe of the prestressed pipeline, drilling a hole matched with the rod part of the exhaust pipe on the joint pipe, enabling the rod part of the exhaust pipe to penetrate through the joint pipe outwards, and fixing the rod part outside the joint pipe by using a screw cap;
step 3, inserting the air pipe sleeve made of flexible materials on the rod part;
step 4, taking the manufactured joint pipe to a construction site, installing the joint pipe at the vertex of the prestressed pipeline, enabling the hole of the air pipe to be upward, connecting two ends of the joint pipe with the corrugated pipe of the prestressed pipeline, positioning and fixing the joint pipe and the corrugated pipe which form the prestressed pipeline, leading the air pipe out of the concrete surface of the structure to be not less than 40cm, and ensuring that the air pipe is not bent and blocked in the structure;
and 5, after the steel strand passes through the prestressed pipeline and is subjected to prestress tensioning, injecting cement slurry into the prestressed pipeline, discharging compressed air in the prestressed pipeline by an air pipe during cement slurry injection, discharging cement slurry finally, bending the exposed air pipe after discharging qualified cement slurry, sealing and discharging the slurry, keeping the pressure of the cement slurry in the prestressed pipeline for solidification, and cutting off the exposed air pipe after the cement slurry in the prestressed pipeline is solidified.
5. The construction method of the concrete prestressed pipe mud jacking vent hole structure according to claim 4, wherein in the step 1, the exhaust pipe is manufactured by drilling a through hole by using a countersunk head bolt, wherein a screw head and a screw rod of the countersunk head bolt are respectively used as a head part and a rod part of the exhaust pipe, and the aperture of the through hole is 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210075762.2A CN114395985A (en) | 2022-01-22 | 2022-01-22 | Concrete prestressed pipeline mud jacking exhaust hole structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210075762.2A CN114395985A (en) | 2022-01-22 | 2022-01-22 | Concrete prestressed pipeline mud jacking exhaust hole structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114395985A true CN114395985A (en) | 2022-04-26 |
Family
ID=81232657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210075762.2A Pending CN114395985A (en) | 2022-01-22 | 2022-01-22 | Concrete prestressed pipeline mud jacking exhaust hole structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114395985A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2194212A1 (en) * | 2008-12-05 | 2010-06-09 | Geberit International AG | Pipe casing |
| CN102691268A (en) * | 2012-06-12 | 2012-09-26 | 宁波二十冶建设有限公司 | Stretching construction process of super-long prestressed tendon |
| CN107762158A (en) * | 2017-11-16 | 2018-03-06 | 中国水利水电第十工程局有限公司 | A kind of method that blast pipe is installed on prestressing force bellows |
| CN211872584U (en) * | 2020-03-25 | 2020-11-06 | 陕西工业职业技术学院 | Bridge prestressed duct |
| CN112212107A (en) * | 2020-11-03 | 2021-01-12 | 柳州欧维姆机械股份有限公司 | Prestress plastic corrugated pipe joint and mounting method thereof |
| CN113882267A (en) * | 2021-11-02 | 2022-01-04 | 湖北华投绿智工程科技有限公司 | Filling degree enhancing device with slurry storage pipe and slurry observing mechanism |
-
2022
- 2022-01-22 CN CN202210075762.2A patent/CN114395985A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2194212A1 (en) * | 2008-12-05 | 2010-06-09 | Geberit International AG | Pipe casing |
| CN102691268A (en) * | 2012-06-12 | 2012-09-26 | 宁波二十冶建设有限公司 | Stretching construction process of super-long prestressed tendon |
| CN107762158A (en) * | 2017-11-16 | 2018-03-06 | 中国水利水电第十工程局有限公司 | A kind of method that blast pipe is installed on prestressing force bellows |
| CN211872584U (en) * | 2020-03-25 | 2020-11-06 | 陕西工业职业技术学院 | Bridge prestressed duct |
| CN112212107A (en) * | 2020-11-03 | 2021-01-12 | 柳州欧维姆机械股份有限公司 | Prestress plastic corrugated pipe joint and mounting method thereof |
| CN113882267A (en) * | 2021-11-02 | 2022-01-04 | 湖北华投绿智工程科技有限公司 | Filling degree enhancing device with slurry storage pipe and slurry observing mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101565989B (en) | Method for coaxially connecting FRP reinforcements by FRP connecting pipe and expansive cement | |
| WO2020151347A1 (en) | Prefabricated prestressed anchor structure | |
| CN104514572A (en) | Rod body connecting device, anchor rod and manufacturing method thereof | |
| CN105951872A (en) | Drainage pipeline foundation in soft soil foundation and construction method of drainage pipeline foundation | |
| CN110700319A (en) | Comprehensive pipe gallery is with unilateral formwork frock | |
| CN114395985A (en) | Concrete prestressed pipeline mud jacking exhaust hole structure and construction method thereof | |
| CN106638307A (en) | Deeply-buried anchorage device | |
| CN110468679A (en) | One kind string formula FRP pipe seawater coral aggregate concrete arch bridge structure and method of construction | |
| CN207348476U (en) | A kind of mud jacking cover for being used to seal prestress pipe work anchor | |
| CN210890420U (en) | Prestressed ultra-high performance concrete pressure pipe | |
| CN114809118A (en) | High-pulling-resistance pressure type anti-floating anchor rod and construction method thereof | |
| CN113294174A (en) | Tunnel lining vibrating device and method | |
| CN205444484U (en) | Wall lacing wire subassembly | |
| CN112160322A (en) | Pile head softening treatment method for concrete cast-in-place pile | |
| CN206234492U (en) | A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design | |
| CN219032937U (en) | Lower cover arch reinforcement hanging mould component of arch bridge | |
| CN1102091C (en) | Deep motor-pumped well pipe of steel bar reinforced concrete | |
| CN220284790U (en) | Water conservancy side slope prestressing force anchor rope structure | |
| CN213268016U (en) | Prestressed anti-corrosion anti-floating anchor rod | |
| CN211872648U (en) | Plugging structure for prestressed bent cap tensioning end notch | |
| CN216380270U (en) | Prefabricated conical head piece | |
| CN210239152U (en) | Built-in reinforced bar pull rod for reinforcing concrete formwork | |
| CN215890044U (en) | Tunnel and culvert reinforcing aid | |
| CN215052923U (en) | Special-shaped steel wire pipe for cast-in-place pile induced joint | |
| CN220645199U (en) | Fixing device for penetrating reserved pipe of cast-in-place concrete wall |
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 |