CN111321671A - Construction method for construction of engineering bridge pile structure - Google Patents
Construction method for construction of engineering bridge pile structure Download PDFInfo
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- CN111321671A CN111321671A CN202010182189.6A CN202010182189A CN111321671A CN 111321671 A CN111321671 A CN 111321671A CN 202010182189 A CN202010182189 A CN 202010182189A CN 111321671 A CN111321671 A CN 111321671A
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- General Engineering & Computer Science (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction method, particularly relates to a construction method for building an engineering bridge pile structure, and belongs to the technical field of construction processes for building municipal highway engineering structures. The construction method for the construction of the pile column structure of the engineering bridge is simple in structure and convenient to construct and operate. The pile structure comprises a pile foundation, a pile and a cover beam, the construction method comprises the steps of forming holes twice and pressing a pile barrel once, pouring of the pile foundation and the pile is continuously completed once, the cover beam is poured finally, a covering layer outside the pile casing is excavated and removed, and the construction work of the pile structure of the engineering bridge is completed, wherein secondary hole forming is performed after primary hole forming is completed and the pile casing is pressed in.
Description
Technical Field
The invention relates to a construction method, in particular to a construction method for building an engineering bridge pile structure, and belongs to the technical field of municipal highway engineering structure building construction processes.
Background
In bridge engineering construction, conditions such as bridge spanning, highway passing below, high slope, deep hole pile foundation, construction period rush and the like are often encountered, and the problems that construction quality needs to be guaranteed, construction period needs to be shortened, and cost needs to be saved are inevitably involved. The design theory, construction quality and pier stud appearance quality of pile foundation, pier stud directly influence the life of bridge, and construction cost, and the high support frame of supporting box roof beam can increase the construction degree of difficulty and increase the potential safety hazard.
Usually, the bridge substructure is designed into a pile foundation, a bearing platform, a pier stud and a capping beam structure, the structure is clear, the stress is clear, but a cutting section needs to be dug deeply at the intersection of the bridge, the side slope is steep, and the erection of a supporting frame of a box girder is inconvenient.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the construction method for the construction of the pile column structure of the engineering bridge is simple in structure and convenient to construct and operate.
The technical scheme adopted for solving the technical problems is as follows: a construction method for building the pile structure of engineering bridge includes such steps as drilling holes twice, pressing a sleeve once, pouring pile foundation and pile, pouring cover beam, excavating protecting sleeve, removing the cover layer,
wherein, secondary pore-forming is carried out after primary pore-forming is finished and the pile casing is pressed in.
Furthermore, after two pore-forming operations are finished, the steel reinforcement cage is manufactured and installed, and then the pile foundation and the pile column are continuously poured once again.
The preferred mode of above-mentioned scheme is, all carry out corresponding detection after the installation of pore-forming, pressure section of thick bamboo and steel reinforcement cage at every turn, then carry out subsequent work again.
Further, hole forming operation is carried out in the foundation of the excavated covering layer by adopting a punching pile driver or a rotary excavator for primary hole forming until the first-step hole forming is carried out to the installation position of the bottom of the pile casing, namely the pile column is exposed out of the ground surface.
The preferable mode of above scheme is that mechanical pore-forming is adopted to the pile foundation bearing layer end in the secondary pore-forming.
Further, before the pile casing is installed, detecting the aperture and the verticality of the pile hole after primary hole forming and whether the relevant parameters of the collapse hole exist, and installing the pile hole after the pile hole is qualified; after secondary hole forming, detecting the aperture and the verticality of the pile foundation hole and whether the pile foundation hole is collapsed or not, and then installing a steel reinforcement cage; and detecting the ellipticity and the straightness before the protective cylinder is installed, detecting the verticality and the ellipticity after the protective cylinder is installed, and detecting the verticality and the ellipticity of the protective cylinder after the reinforcing cage is installed.
The preferable mode of the scheme is that after the primary and secondary pore-forming is finished, the pores are cleaned, and the reinforcement cage is installed after the redundant slurry and sediment at the bottom of the pores are removed.
Further, after the pile foundation and the pile column are continuously poured once, the capping beam and the box beam are poured firstly, after concrete curing is finished, buried pile casing earthwork excavation and ground finishing are carried out, sealing treatment and polishing of the pile casing are carried out at the joint of the pile casing and the capping beam and the joint of the pile casing and an excavation surface through anti-aging waterproof glue, and finally rust prevention and veneer coating are carried out.
Further, the protective cylinder is made by rolling a steel plate.
The steel reinforcement cage is manufactured and detected on site, the steel plate rolled protective sleeve is manufactured and detected in a factory, and the steel plate rolled protective sleeve is used after being qualified.
The invention has the beneficial effects that: this application is based on including pile foundation, stake and bent cap after improving pile foundation stake as the main, adopts twice pore-forming, once presses a section of thick bamboo, once only accomplishes pouring of pile foundation and stake in succession, pours the bent cap at last to the overburden that protects a section of thick bamboo outside is clear away in the excavation is accomplished the construction work of engineering bridge stake structure, and wherein, the secondary pore-forming is put and is accomplished and is impressed at a pore-forming after protecting a section of thick bamboo. Therefore, the pile replaces a bearing platform and a pier column in the prior art, so that the drilling of a lower pile foundation hole and an upper pile foundation hole can be directly completed through twice pore-forming in the construction process of the pile structure, and then the continuous casting of the pile foundation and the pile column can be completed once again.
Drawings
FIG. 1 is a schematic view of a pile structure according to the construction method for constructing the pile structure of the engineering bridge of the present invention;
fig. 2 is a top view of fig. 1.
Labeled as: the method comprises the following steps of pile foundation 1, pile column 2, capping beam 3, pile casing 4, box girder 5 and excavated cover layer foundation 6.
Detailed Description
As shown in fig. 1 and 2, the construction method for constructing the pile structure of the engineering bridge, which is provided by the invention, has a simple structure and is convenient to construct and operate. The pile structure comprises a pile foundation 1, a pile 2 and a cover beam 3, the construction method comprises the steps of forming holes twice, pressing a cylinder once, continuously pouring the pile foundation 1 and the pile 2, pouring the cover beam 3 at last, excavating and removing a covering layer on the outer side of a pile casing 4 to complete the construction work of the pile structure of the engineering bridge, wherein secondary hole forming is carried out after primary hole forming is completed and the pile casing is pressed in. This application is based on including pile foundation, stake and bent cap after improving pile foundation stake as the main, adopts twice pore-forming, once presses a section of thick bamboo, once only accomplishes pouring of pile foundation and stake in succession, pours the bent cap at last to the overburden that protects a section of thick bamboo outside is clear away in the excavation is accomplished the construction work of engineering bridge stake structure, and wherein, the secondary pore-forming is put and is accomplished and is impressed at a pore-forming after protecting a section of thick bamboo. Like this, because cushion cap and pier stud among the prior art have been replaced by the pile, thereby can be in the construction process of pile structure, can directly accomplish the drilling in lower part pile foundation hole and upper portion pile foundation hole through twice pore-forming, then disposable completion pile foundation, the continuous pouring of pile stud, the complicated operation that pile foundation, cushion cap and pier stud need separately carry out pore-forming, excavation and pouring among the prior art has been saved, not only make the pile structure of this application simpler, and construction operation is more convenient, construction operation effect is higher, construction cost is lower, suitable for using in the civil engineering foundation engineering of chongshan mountain and great mountains.
In the above embodiment, after the two pore-forming processes are completed, the reinforcement cage needs to be manufactured and installed first, and then the pile foundation 1 and the pile 2 are continuously cast once again. Certainly, this application protect a section of thick bamboo 4 for the steel sheet system protects a section of thick bamboo, like this, the steel reinforcement cage and the steel sheet system protect a section of thick bamboo and be on-the-spot preparation, detect, qualified back is for use.
The concrete hole forming, the pile casing 4, the manufacturing and the installation of the reinforcement cage and the concrete pouring are carried out according to the following steps, namely after the hole forming is finished twice, the manufacturing and the installation of the reinforcement cage are firstly carried out, and then the pouring of the pile foundation 1 and the pile column 2 is continuously finished once. And (3) adopting a punching pile entering machine or a rotary excavator for primary hole forming, and carrying out hole forming operation in the excavated covering layer foundation 6 until the first-stage hole forming is carried out to the installation position of the bottom of the pile casing, namely the pile column 2 is exposed out of the earth surface. And mechanical pore-forming is adopted for secondary pore-forming until the pile foundation bearing layer is finished. After the primary and secondary pore-forming is finished, the pores are cleaned, and the reinforcement cage is installed after the redundant slurry and sediment at the bottom of the pores are cleaned. And all carry out corresponding detection after the installation of pore-forming, pressure section of thick bamboo and steel reinforcement cage at every turn, then carry out subsequent work again. The concrete detection steps are that before the pile casing is installed, the hole diameter and the verticality of the pile hole after primary hole forming are detected, and whether the pile hole is collapsed or not is detected, and the pile casing is installed after the pile hole is qualified; after secondary hole forming, detecting the aperture and the verticality of the pile foundation hole and whether the pile foundation hole is collapsed or not, and then installing a steel reinforcement cage; and detecting the ellipticity and the straightness before the protective cylinder is installed, detecting the verticality and the ellipticity after the protective cylinder is installed, and detecting the verticality and the ellipticity of the protective cylinder after the reinforcing cage is installed.
Meanwhile, when a covering layer foundation outside the pile casing is removed in an excavation mode, after the pile foundation 1 and the pile column 2 are poured continuously at one time, the cover beam 3 and the box girder 5 are poured firstly, after concrete curing is finished, then buried pile casing earthwork excavation and ground finishing are carried out, the joint of the pile casing 4 and the cover beam 3 and the joint of the pile casing 4 and an excavation surface are sealed by anti-aging waterproof glue, the pile casing 4 is polished, and finally rust prevention and facing coating are carried out. Like this, pile casing adds the stake and has cancelled cushion cap and pier stud, and the substructure directly comprises bent cap and pile casing stake, simplifies the structure, shortens the construction process, changes into double columns by original single pier stud, has eliminated the lateral overturning hidden danger of case roof beam, and the case roof beam construction is gone on before the road construction of wearing down, avoids high support frame, also avoids high support frame to set up on the abrupt slope, improves the construction security, reduces the construction degree of difficulty, raises the efficiency, practices thrift the cost.
To sum up, compared with the prior art, the technical scheme provided by the application has the following beneficial effects:
1. the pile structure of the pile casing comprises the pile casing and the upper section of the pile foundation, and replaces a pier column structure of a bearing platform, so that the pier column is converted into a multi-column form, the box girder of the upper structure is stressed in a multi-point balanced manner, the lateral overturning resistance of the box girder is enhanced, and the overall safety of the bridge structure is improved.
2. In the process of forming the pile, the construction of the pier stud is completed, and the manufacturing of the pile casing and the manufacturing of the reinforcement cage can be synchronously performed with the hole forming operation, so that the construction period is greatly shortened.
3. When the superstructure box girder is constructed, when the off-site prefabrication can not be carried out according to the on-site hoisting condition, the construction can be carried out according to the cast-in-place box girder, earthwork is not excavated, and only soil body flattening and hardening treatment at the bottom of the box girder is carried out, so that the engineering quantity of the box girder supporting frame erection is effectively reduced, the technical difficulty and the construction measure cost are greatly reduced, the construction safety of the supporting frame is improved, and the construction period of the box girder is shortened.
4. Under the condition of meeting the same function, the construction of the bearing platform pier stud is simplified, so the construction cost is reduced.
Example one
The invention aims to solve the technical problem of providing a pile column of a pile casing and a construction method thereof, which have simple structural form and attractive appearance, and the double-column pile column can stably support a bridge. Meanwhile, the structural form has the advantages of high strength, good rigidity, optimized construction process, simplified process flow, improved construction safety, enhanced structural stability, accelerated progress, cost saving and the like.
A pile column with pile casing is composed of pile foundation, pile casing, cover beam and cast-in-situ box beam, and is composed of pile hole, pile casing, reinforcing cage, concrete pouring, earth excavating, and cleaning and modifying pile casing. The method comprises the following steps:
1. preparation work: and (4) formulating a construction scheme according to the geological condition and the construction environment.
2. Pile foundation upper segment pore-forming: according to the scheme, a punching pile machine or a rotary excavator is used for hole forming operation, the hole is formed in the first step to the installation position of the bottom of the pile casing, and the pile begins to be exposed out of the ground surface.
3. And (3) pore-forming detection: detecting parameters such as aperture, verticality, collapse and the like of pile hole
4. Manufacturing and installing a protective cylinder: and (4) processing and manufacturing the protective cylinder in an off-site manufacturing factory, detecting the precision ovality and the straightness, and transporting to a site for installation.
5. And (3) detecting the installation quality of the pile casing: and detecting the verticality and the ovality after the pile casing is installed.
6. Forming holes at the lower section of the pile foundation: mechanically forming a hole to the pile foundation bearing layer, and detecting the pile hole.
7. Hole cleaning: and removing redundant slurry and sediments at the bottom of the hole.
8. Manufacturing and installing a reinforcement cage: and (4) manufacturing the reinforcement cage on site, and installing the reinforcement cage after the reinforcement cage is qualified through inspection.
9. And (3) secondary detection of the parameters of the pile casing: and detecting the verticality and the ovality of the pile casing.
10. And continuously pouring pile foundation pile concrete.
11. Earth excavation: the earthwork for burying the pile casing is dug out, and the surface of the pile casing is not damaged.
12. Cleaning and modifying a protective cylinder: cleaning the protective cylinder, sealing the upper opening and the lower opening with anti-aging waterproof glue, polishing the protective cylinder, and performing rust prevention and veneer coating.
In a further aspect of the present invention, the material of the casing is selected according to the size of the pile diameter and the length of the casing, and the material and the plate thickness are suitable to meet the requirements of ovality and straightness.
As a further scheme of the invention, the capping beam and the pile form a lower structure, and the capping beam and the pile form a lower structure.
As a further scheme of the invention, the detection of the erection ovality and the perpendicularity of the pile casing is a serious difficulty of the invention, namely the erection quality precision is required to be high, and the erection quality precision is also required to be high, so that the pile casing is ensured not to incline and deform after being shaped and excavated, and the ovality and the perpendicularity of the pile casing are also detected in the concrete pouring process.
As a further scheme of the invention, the hole forming machine is selected, and rotary drilling is promoted and used for forming holes according to comprehensive consideration of field conditions, engineering cost, construction period requirements and the like, so that the quality control of the installation of the pile casing is facilitated.
As a further scheme of the invention, the earth excavation is carried out after the construction of the box girder is finished and the support frame is unloaded, so that the construction of the box girder under the conditions of improving the safety, improving the work efficiency and reducing the cost is facilitated, and the earth excavation is the starting point of the invention.
The supporting structure and the construction method are mainly suitable for the situation that a bridge passes through a highway under the road, a high slope is excavated, and a high pier column exists.
The specific operation process is as follows,
1. preparation work: and (4) formulating a construction scheme according to the geological condition and the construction environment.
2. Pile foundation upper segment pore-forming: according to the scheme, a punching pile machine or a rotary excavator is used for hole forming operation, the hole forming of the first-stage pile column 3 is the installation position of the bottom of the pile casing, namely the pile begins to be exposed out of the ground surface part B.
3. And (3) pore-forming detection: detecting parameters such as aperture, verticality, collapse and the like of pile hole
4. Manufacturing and installing a protective cylinder: and (4) processing and manufacturing the protective cylinder 2 in an off-site manufacturing factory, detecting the precision ovality and the straightness, and transporting to a site for installation.
5. And (3) detecting the installation quality of the pile casing: and detecting the verticality and the ovality after the pile casing is installed.
6. Forming holes at the lower section of the pile foundation: mechanically forming a hole to the pile foundation bearing layer, and detecting the pile hole.
7. Hole cleaning: and removing redundant slurry and sediments at the bottom of the hole.
8. Manufacturing and installing a reinforcement cage: and (4) manufacturing the reinforcement cage on site, and installing the reinforcement cage after the reinforcement cage is qualified through inspection.
9. And (3) secondary detection of the parameters of the pile casing: and detecting the verticality and the ovality of the pile casing.
10. And (5) pouring pile foundation and pile concrete.
11. Earth excavation: excavation of earth for burying and protecting barrel
12. Cleaning and modifying a protective cylinder: cleaning the protective cylinder, sealing the upper opening and the lower opening with anti-aging waterproof glue, polishing the protective cylinder, and performing rust prevention and veneer coating.
Claims (10)
1. A construction method for building an engineering bridge pile structure is characterized by comprising the following steps: the pile structure comprises a pile foundation (1), a pile (2) and a capping beam (3), the construction method comprises the steps of forming holes twice, pressing a cylinder once, continuously pouring the pile foundation (1) and the pile (2) once, pouring the capping beam (3) finally, excavating a covering layer outside a cleaning pile casing (4) to complete the construction work of the engineering bridge pile structure,
wherein, secondary pore-forming is carried out after primary pore-forming is finished and the pile casing is pressed in.
2. The construction method for the construction of the pile structure of the engineering bridge according to claim 1, wherein: after the two pore-forming processes are finished, the steel reinforcement cage is firstly manufactured and installed, and then the pile foundation (1) and the pile column (2) are continuously poured once again.
3. The construction method for the construction of the pile structure of the engineering bridge according to claim 2, wherein: corresponding detection is carried out after the hole forming, the pressing cylinder and the steel reinforcement cage are installed at each time, and then subsequent work is carried out.
4. The construction method for the construction of the pile structure of the engineering bridge according to any one of claims 1 to 3, wherein: and performing hole forming operation in the excavated covering layer foundation (6) by adopting a punching pile machine or a rotary excavator until the hole is formed to the installation position of the bottom of the pile casing at the first stage, namely the pile column (2) is exposed out of the ground surface.
5. The construction method for the construction of the pile structure of the engineering bridge according to claim 4, wherein: and mechanical pore-forming is adopted for secondary pore-forming until the pile foundation bearing layer is finished.
6. The construction method for the construction of the pile structure of the engineering bridge according to claim 5, wherein: before installing the pile casing, detecting the aperture and the verticality of the pile hole after primary hole forming and whether the pile hole is collapsed, and installing the pile casing after the pile hole is qualified; after secondary hole forming, detecting the aperture and the verticality of the pile foundation hole and whether the pile foundation hole is collapsed or not, and then installing a steel reinforcement cage; and detecting the ellipticity and the straightness before the protective cylinder is installed, detecting the verticality and the ellipticity after the protective cylinder is installed, and detecting the verticality and the ellipticity of the protective cylinder after the reinforcing cage is installed.
7. The construction method for the construction of the pile structure of the engineering bridge according to claim 6, wherein: after the primary and secondary pore-forming is finished, the pores are cleaned, and the reinforcement cage is installed after the redundant slurry and sediment at the bottom of the pores are cleaned.
8. The construction method for the construction of the pile structure of the engineering bridge according to claim 4, wherein: after the pile foundation (1) and the pile column (2) are continuously poured once, the capping beam (3) and the box beam (5) are poured firstly, after concrete curing is finished, buried pile casing earthwork excavation and ground finishing are carried out, sealing treatment is carried out on the joint of the pile casing (4) and the capping beam (3) and the joint of the pile casing (4) and an excavation surface by using anti-aging waterproof glue, the pile casing (4) is polished, and finally rust prevention and veneer coating are carried out.
9. The construction method for the construction of the pile structure of the engineering bridge according to claim 4, wherein: the protective cylinder (4) is a steel plate rolled protective cylinder.
10. The construction method for the construction of the pile structure of the engineering bridge according to claim 4, wherein: the steel reinforcement cage is manufactured and detected on site, the steel plate rolled protective sleeve is manufactured and detected in a factory, and the steel reinforcement cage is used after being qualified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010182189.6A CN111321671A (en) | 2020-03-16 | 2020-03-16 | Construction method for construction of engineering bridge pile structure |
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Application publication date: 20200623 |