CN117468496A - Full-prefabricated integral elevator foundation and construction method thereof - Google Patents
Full-prefabricated integral elevator foundation and construction method thereof Download PDFInfo
- Publication number
- CN117468496A CN117468496A CN202311253642.8A CN202311253642A CN117468496A CN 117468496 A CN117468496 A CN 117468496A CN 202311253642 A CN202311253642 A CN 202311253642A CN 117468496 A CN117468496 A CN 117468496A
- Authority
- CN
- China
- Prior art keywords
- foundation
- prefabricated
- pile pressing
- column
- column foot
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000003825 pressing Methods 0.000 claims abstract description 73
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 23
- 238000013461 design Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims description 27
- 238000009412 basement excavation Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000011835 investigation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention discloses a full-prefabricated integral elevator foundation and a construction method thereof, and belongs to the field of full-prefabricated integral elevator foundation construction. According to the invention, through the hollow column and the hollow end column arranged on the prefabricated foundation, the size of the prefabricated foundation is reduced, the requirements of transportation and installation of the prefabricated foundation on the environment are reduced, and meanwhile, the pile pressing and the anchor pile are ensured; the pile is integrated, the column bottom force is directly transmitted to the pile foundation, and the stress is more direct. The invention adopts the structure and construction mode of column foot steel bones. The design of the column foot steel skeleton not only ensures that the hollow column and the hollow end column are installed in the later stage, but also ensures that the connection joint of the column foot steel skeleton and the pile can bear pulling force and pressure at the same time, thereby having stronger applicability; the construction and construction of the pile pressing platform are matched with the first and second key technologies, and the pile pressing platform has a guarantee function on the construction of a prefabricated foundation.
Description
Technical Field
The invention belongs to the field of construction of fully prefabricated integral elevator foundations, and particularly relates to a fully prefabricated integral elevator foundation and a construction method thereof.
Background
At present, the elevator foundation is additionally arranged by adopting a cast-in-situ reinforced concrete foundation, and the cast-in-situ foundation has the defects of large excavation area of a foundation pit, more field workload, longer construction period, large environmental impact and the like, reduces the convenience, comfort and safety of life of residents of the corresponding building, has larger influence on the existing building and has high construction risk. The existing fully prefabricated assembled foundation has the advantages that the existing fully prefabricated assembled foundation almost has no wet operation on site, but an elevator foundation pit is used as a waterproof structure, the requirement on the integrity is high, and the foundation has the water leakage risk. The prefabricated integral foundation can reduce the working amount of cast-in-place concrete to a certain extent, but still retains a certain amount of cast-in-place concrete, and the maintenance time is longer, and compared with the traditional cast-in-place foundation, the advantage is not obvious. In addition, in the existing old community, the condition that the house types of the same community are consistent is common, the difference of requirements of different elevator brands on elevator foundation pits is not very large, the method is beneficial to mass production of prefabricated foundations, the production efficiency can be improved, and the cost is saved. In view of the above analysis, the invention of the fully prefabricated integral elevator foundation has wide application scenes and economic benefits.
Disclosure of Invention
Aiming at the problems in the background technology, the invention provides a fully prefabricated integral elevator foundation and a construction method thereof, the invention transfers the on-site traditional cast-in-situ operation to a component factory, combines the modular design thinking, and simultaneously considers the transportation and hoisting conditions, and reduces the size and the weight of the prefabricated foundation by modifying the construction technology of pile foundations and column feet so as to realize batch production, transportation and installation of the elevator prefabricated foundation.
For this purpose, the invention adopts the following technical scheme: a fully prefabricated integral elevator foundation structure comprises a prefabricated foundation, column foot steel bones, a pile pressing platform and a fixed pull rod,
the prefabricated foundation comprises a bottom plate, a hollow end column, a foundation pit side wall, hanging nails, hanging rings and a pile pressing plate fixing piece; the hollow end posts are sequentially arranged on the bottom plate, foundation pit side walls are arranged between the adjacent hollow end posts, hanging nails are arranged at the tops of the foundation pit side walls, hanging rings are arranged on the bottom plate of the hollow end posts, and a plurality of pile pressing plate fixing pieces are arranged on the outer side faces of the foundation pit side walls;
the column foot steel skeleton comprises I-shaped steel, welding nails, a column foot bottom plate, column foot anchor bars and anchor bar end plates; the welding nails are sequentially arranged on two side surfaces of the I-shaped steel, the bottom of the I-shaped steel is fixedly supported on the column foot bottom plate, the bottom surface of the column foot bottom plate is provided with a plurality of anchor bars, and the bottom of each anchor bar is fixedly provided with an anchor bar end plate; the column foot steel bones are placed on the hollow end columns or the hollow end columns and are poured with rapid hardening fine stone concrete, so that transition and connection between the prefabricated foundation and the pile foundation and between the prefabricated foundation and the upper structure are realized, and the prefabricated foundation and the column foot steel bones are matched and finally form a whole through the rapid hardening fine stone concrete to serve as a permanent structural member; the pile pressing platform is used as a construction auxiliary tool and is matched with a prefabricated foundation;
the pile pressing platform comprises a steel plate and welding nails; the pile pressing platform is connected with the prefabricated foundation into a whole through a fixed pull rod, and the anchor rod static pile pressing counter-force frame is fixed on the pile pressing platform through a steel plate.
The construction method of the full prefabricated integral elevator foundation comprises the following steps:
the first step: paying off the foundation; according to the design drawing, the plane position of the prefabricated foundation is determined by on-site paying-off, so that the relative position relationship between the prefabricated foundation and the existing building is ensured to be accurate;
and a second step of: digging a foundation pit; and excavating a foundation pit according to paying-off. Before excavation, the depth of excavation should be determined. In the process of excavation, adopting a foundation pit without slope, monitoring the excavation depth and pit bottom elevation, and strictly prohibiting overexcavation; after the pit is excavated to the designed elevation, a concrete cushion layer is not arranged, but the pit bottom is ensured to be flat;
and a third step of: placing a prefabricated foundation; the method comprises the steps that an automobile crane is adopted, hoisting is carried out to a designed position through a hoisting point reserved on a prefabricated foundation, and retesting and adjustment are carried out on the horizontal and vertical positions of the prefabricated foundation, so that the accuracy and precision of the installation position are ensured;
fourth step: backfilling earthwork; after the placement of the prefabricated foundation is completed, the soil should be uniformly backfilled and compacted in layers immediately. In the backfilling and compacting processes, the prefabricated foundation position is ensured to be unchanged;
fifth step: installing a pile pressing platform; and lifting the pile pressing platform, and placing the pile pressing platform on a prefabricated foundation, wherein pile pressing holes on the pile pressing platform are coincided with the hollow end column and the centroid of the hollow end column. The pile pressing platform and the prefabricated foundation are connected into a whole by a hanging ring and a pile pressing plate fixing piece which are reserved on the prefabricated foundation and a fixing pull rod;
sixth step: placing a balancing weight; after determining the weight of the balancing weight according to the pile foundation bearing capacity provided by design and combining the investigation file and the construction experience, placing the balancing weight;
seventh step: pile pressing is carried out one by one; when pile pressing is carried out, the two ends are pressed first and then the middle part is pressed, so that the foundation position is ensured not to deviate greatly after pile pressing;
eighth step: dismantling a pile pressing platform; after pile pressing is finished, the pile pressing platform is removed in time, and the elevation and the plane position of the prefabricated foundation a are retested, so that the next working procedure is ensured to be carried out after no error;
ninth step: placing column foot steel bones; sequentially placing and fixing six column foot steel bones, accurately measuring and positioning the top elevation, the bottom elevation, the perpendicularity and the plane position of the column foot steel bones when the column foot steel bones are placed, and fixing the column foot steel bones by adopting certain measures;
tenth step: pouring quick hardening micro-expansion concrete; the hollow end column and the hollow area of the hollow end column are poured by adopting the rapid hardening micro-expansion concrete with better fluidity, and meanwhile, the vibrating rod is adopted to vibrate, and the vibrating rod penetrates through the semicircular opening of the column foot bottom plate to vibrate the concrete below the column foot bottom plate so as to ensure the pouring quality of the connecting node. After the concrete is poured, corresponding maintenance measures are carried out, and after the strength reaches the design requirement, the upper structure can be installed;
eleventh step: and finishing the construction of the prefabricated foundation.
The invention can achieve the following beneficial effects: according to the invention, through the hollow end post and the hollow end post of the prefabricated foundation, the size of the prefabricated foundation is reduced, the requirements of transportation and installation of the prefabricated foundation on the environment are reduced, and meanwhile, the pile pressing and the anchor pile are ensured; the pile is integrated, the column bottom force is directly transmitted to the pile foundation, and the stress is more direct. The invention adopts the structure and construction mode of column foot steel bones. The design of the column foot steel skeleton not only ensures that the hollow end column and the hollow end column are installed in the later stage, but also ensures that the connection joint of the column foot steel skeleton and the pile can bear pulling force and pressure at the same time, thereby having stronger applicability; the pile pressing platform is matched with the construction and the construction, and has a guarantee function on the construction of a prefabricated foundation.
Drawings
FIG. 1 is a schematic diagram of a prefabricated foundation structure according to the present invention.
Fig. 2 is a schematic view of the structure of the column foot steel skeleton of the present invention.
Fig. 3 is a schematic diagram of the connection of column base steel bones with pile foundations.
Fig. 4 is a schematic view of the pile pressing platform and the fixed pull rod.
Fig. 5 is a schematic structural view of the present invention.
Detailed Description
The following detailed description of specific embodiments of the invention is given by way of illustration and explanation of the invention, and is not to be construed as limiting the invention in any way.
As shown in fig. 1 to 5, the full prefabricated integral elevator foundation structure comprises a prefabricated foundation a, column foot steel bones b, a pile pressing platform c and a fixed pull rod d, wherein the inner sides of a hollow end column and a hollow end column are provided with rough surfaces.
The prefabricated foundation a comprises a bottom plate a1, a hollow end column a2, a hollow end column a3, a foundation pit side wall a4, a hanging nail a5, a hanging ring a6 and a pile pressing plate fixing piece a7; the hollow end posts a2 are sequentially arranged on the bottom plate a1, a foundation pit side wall a4 is arranged between the adjacent hollow end posts a3, the hanging nails a5 are arranged at the top of the foundation pit side wall a4, a hanging ring a6 is arranged on the bottom plate of the hollow end post a2, and a plurality of pile pressing plate fixing pieces a7 are arranged on the outer side face of the foundation pit side wall a 4;
the column foot steel rib b comprises an I-shaped steel b1, a welding nail b2, a column foot bottom plate b3, column foot anchor bars b4 and anchor bar end plates b5; the welding nails b2 are sequentially arranged on two side surfaces of the I-shaped steel b1, the bottom of the I-shaped steel b1 is fixedly supported on the column foot bottom plate b3, the bottom surface of the column foot bottom plate b3 is provided with a plurality of anchor bars b4, and the bottom of each anchor bar b4 is fixedly provided with an anchor bar end plate b5; and the column foot steel rib b is placed in the hollow end column a1 or the hollow end column a3 and is poured with rapid hardening fine stone concrete, so that transition and connection between the prefabricated foundation a and the pile foundation and between the prefabricated foundation a and the upper structure are realized, and the prefabricated foundation a and the column foot steel rib b are matched and matched to form a whole through the rapid hardening fine stone concrete finally to be used as a permanent structural member. The pile pressing platform c is used as a construction auxiliary tool and is matched with the prefabricated foundation a; the prefabricated foundation is connected with the pile pressing platform in an integral mode through a plurality of pull rods and embedded hanging rings or fixing pieces. The column foot anchor bars b4 and the anchor bar end plates b5 are respectively provided with 4, and semicircular openings are formed in two sides of the column foot bottom plate b 3.
The pile pressing platform c comprises a steel plate c1 and welding nails c2; the pile pressing platform c is connected with the prefabricated foundation a into a whole through the fixed pull rod d, and the anchor rod static pile reaction frame is fixed on the pile pressing platform through a steel plate.
The construction method of the full prefabricated integral elevator foundation comprises the following steps:
the first step: paying off the foundation; according to a design drawing, determining the plane position of the prefabricated foundation a by on-site paying-off, and ensuring that the relative position relationship between the prefabricated foundation a and the existing building is accurate;
and a second step of: digging a foundation pit; and excavating a foundation pit according to paying-off. Before excavation, the depth of excavation should be determined. In the process of excavation, adopting a foundation pit without slope, monitoring the excavation depth and pit bottom elevation, and strictly prohibiting overexcavation; after the pit is excavated to the designed elevation, a concrete cushion layer is not arranged, but the pit bottom is ensured to be flat;
and a third step of: placing a prefabricated foundation a; hoisting the a to a designed position by adopting an automobile crane through a hoisting point reserved on the prefabricated foundation, and retesting and adjusting the horizontal and vertical positions of the prefabricated foundation a to ensure the accuracy and precision of the installation position;
fourth step: backfilling earthwork; after the prefabricated foundation a is placed, the soil should be uniformly backfilled and compacted in layers immediately. In the backfilling and compacting processes, the prefabricated foundation position is ensured to be unchanged;
fifth step: installing a pile pressing platform c; and hoisting and placing the pile pressing platform c on the prefabricated foundation a, wherein the pile pressing hole on the pile pressing platform c coincides with the centroids of the hollow end column a2 and the hollow end column a 3. The pile pressing platform c and the prefabricated foundation a are connected into a whole by a fixing pull rod d through a hanging ring a6 and a pile pressing plate fixing piece a7 reserved on the prefabricated foundation a;
sixth step: placing a balancing weight; after determining the weight of the balancing weight according to the pile foundation bearing capacity provided by design and combining the investigation file and the construction experience, placing the balancing weight;
seventh step: pile pressing is carried out one by one; when pile pressing is carried out, the two ends are pressed first and then the middle part is pressed, so that the foundation position is ensured not to deviate greatly after pile pressing;
eighth step: dismantling a pile pressing platform c; after pile pressing is finished, the pile pressing platform c is removed in time, and the elevation and the plane position of the prefabricated foundation a are retested, so that the next procedure is ensured to be carried out after no error;
ninth step: placing column base steel bones b; sequentially placing and fixing six column foot steel bones b, accurately measuring and positioning the top elevation, the bottom elevation, the verticality and the plane position of the column foot steel bones b when the column foot steel bones b are placed, and fixing the column foot steel bones b by adopting certain measures;
tenth step: pouring quick hardening micro-expansion concrete; the hollow areas of the hollow end column a2 and the hollow end column a3 are poured by adopting the rapid hardening micro-expansion concrete with better fluidity, and meanwhile, the vibrating rod is adopted to vibrate, and the vibrating rod penetrates through the semicircular opening of the column base bottom plate b3 to vibrate the concrete below the semicircular opening so as to ensure the pouring quality of the connecting node. After the concrete is poured, corresponding maintenance measures are carried out, and after the strength reaches the design requirement, the upper structure can be installed;
eleventh step: and finishing the construction of the prefabricated foundation.
The technical scheme of the invention is that a prefabricated foundation a with a hollow end post is adopted as a foundation of an upper structure of an elevator; the pile pressing platform c is connected with the concrete prefabricated foundation a into a whole through a fixed pull rod d; the reaction frame of the anchor rod static pressure pile is fixed on a pile pressing platform through a steel plate, and a pile foundation is conveyed to a designed elevation through a hollow end column a1 or a hollow end column a3 during pile pressing; the column foot steel rib b is placed on the hollow end column a1 or the hollow end column a3 and is poured with rapid hardening fine stone concrete, so that transition and connection between the prefabricated foundation a and the pile foundation and between the prefabricated foundation and the upper structure are realized; 5. and matching the prefabricated foundation a and the column base steel rib b, and finally forming a whole through the rapid hardening fine stone concrete to serve as a permanent structural member. And the pile pressing platform c is used as a construction auxiliary tool and is matched with the prefabricated foundation a, and is removed after pile pressing is finished, so that a final engineering entity is not formed.
Embodiments of the present invention have the following advantages
1. The production aspect is as follows: the component sizes are uniform, and batch production can be realized; the steel mould is adopted, the quality of the finished component is good, and the steel mould can be reused;
2. transportation aspect: the size is small, and the transportation of the prefabricated foundation under various road conditions is ensured;
3. the construction aspect is as follows: the workload of on-site earth excavation, concrete pouring and the like is reduced, and the construction period is greatly shortened;
4. environmental aspects; the influence on the existing building is reduced, and the influence on the living convenience of residents is reduced;
5. economic aspects: the mass production efficiency is higher, the unit product cost is low, and the market value is higher;
6. risk aspect: the excavation area of the foundation pit is small, the exposure time is short, and the construction risk is low.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A full prefabricated integral elevator foundation structure, characterized in that: the full prefabricated integral elevator foundation structure comprises a prefabricated foundation (a), column foot steel bones (b), a pile pressing platform (c) and a fixed pull rod (d);
the prefabricated foundation (a) comprises a bottom plate (a 1), a hollow end column (a 2), a hollow end column (a 3), a foundation pit side wall (a 4), hanging nails (a 5), hanging rings (a 6) and a pile pressing plate fixing piece (a 7); the hollow end posts (a 2) are sequentially arranged on the bottom plate (a 1), foundation pit side walls (a 4) are arranged between adjacent hollow end posts (a 3), hanging nails (a 5) are arranged at the tops of the foundation pit side walls (a 4), hanging rings (a 6) are arranged on the bottom plate of the hollow end posts (a 2), and a plurality of pile pressing plate fixing pieces (a 7) are arranged on the outer side faces of the foundation pit side walls (a 4);
the column foot steel rib (b) comprises an I-shaped steel (b 1), welding nails (b 2), a column foot bottom plate (b 3), column foot anchor bars (b 4) and anchor bar end plates (b 5); the welding nails (b 2) are sequentially arranged on two side surfaces of the I-shaped steel (b 1), the bottom of the I-shaped steel (b 1) is fixedly supported on the column foot bottom plate (b 3), a plurality of anchor bars (b 4) are respectively arranged on the bottom surface of the column foot bottom plate (b 3), and the bottom of each anchor bar (b 4) is fixedly provided with an anchor bar end plate (b 5); the column foot steel ribs (b) are placed on the hollow end column (a 1) or the hollow end column (a 3) and are poured with rapid hardening fine stone concrete, so that transition and connection between the prefabricated foundation (a) and the pile foundation and between the prefabricated foundation and the upper structure are realized, and the prefabricated foundation (a) and the column foot steel ribs (b) are matched and matched to form a whole through the rapid hardening fine stone concrete to serve as a permanent structural member; the pile pressing platform (c) is used as a construction auxiliary tool and is matched with the prefabricated foundation (a);
the pile pressing platform (c) comprises a steel plate (c 1) and welding nails (c 2); the pile pressing platform (c) is connected with the prefabricated foundation (a) into a whole through the fixed pull rod (d), and the anchor rod static pile pressing counter-force frame is fixed on the pile pressing platform through the steel plate (c 1).
2. A fully prefabricated monolithic elevator foundation structure according to claim 1, wherein: the hollow end post and the inner side of the hollow end post are provided with rough surfaces.
3. A fully prefabricated monolithic elevator foundation structure according to claim 2, characterized in that: two rows of welding nails (b 2) are respectively arranged on two side surfaces of the I-shaped steel (b 1), and the I-shaped steel (b 1), the column foot bottom plate (b 3), the column foot anchor bars (b 4) and the anchor bar end plates (b 5) are designed to be integrated.
4. A fully prefabricated monolithic elevator foundation according to claim 2 or 3, characterized in that: the column foot anchor bar (b 4) and the anchor bar end plate (b 5) are respectively provided with 4 column foot anchor bars, and semicircular openings are formed in two sides of the column foot bottom plate (b 3).
5. A fully prefabricated monolithic elevator foundation structure according to claim 4, wherein: the prefabricated foundation is connected with the pile pressing platform in an integral mode through a plurality of pull rods and embedded hanging rings or fixing pieces.
6. The construction method of the full prefabricated integral elevator foundation comprises the following steps:
the first step: paying off the foundation; according to a design drawing, determining the plane position of the prefabricated foundation (a) by on-site paying-off, and ensuring that the relative position relation between the prefabricated foundation (a) and the existing building is accurate;
and a second step of: digging a foundation pit; and excavating a foundation pit according to paying-off. Before excavation, the depth of excavation should be determined. In the process of excavation, adopting a foundation pit without slope, monitoring the excavation depth and pit bottom elevation, and strictly prohibiting overexcavation; after the pit is excavated to the designed elevation, a concrete cushion layer is not arranged, but the pit bottom is ensured to be flat;
and a third step of: placing a prefabricated foundation (a); hoisting the prefabricated foundation (a) to a designed position by adopting an automobile crane through a hoisting point reserved on the prefabricated foundation, and retesting and adjusting the horizontal and vertical positions of the prefabricated foundation (a) to ensure the accuracy and precision of the installation position;
fourth step: backfilling earthwork; after the prefabricated foundation (a) is placed, the soil should be uniformly backfilled in layers immediately and compacted; in the backfilling and compacting processes, the prefabricated foundation position is ensured to be unchanged;
fifth step: installing a pile pressing platform (c); and lifting and placing the pile pressing platform (c) on the prefabricated foundation (a), wherein the pile pressing hole on the pile pressing platform (c) coincides with the centroids of the hollow end column (a 2) and the hollow end column (a 3). The pile pressing platform (c) and the prefabricated foundation (a) are connected into a whole by a hanging ring (a 6) and a pile pressing plate fixing piece (a 7) which are reserved on the prefabricated foundation (a) and by a fixing pull rod (d);
sixth step: placing a balancing weight; after determining the weight of the balancing weight according to the pile foundation bearing capacity provided by design and combining the investigation file and the construction experience, placing the balancing weight;
seventh step: pile pressing is carried out one by one; when pile pressing is carried out, the two ends are pressed first and then the middle part is pressed, so that the foundation position is ensured not to deviate greatly after pile pressing;
eighth step: dismantling the pile pressing platform (c); after pile pressing is finished, the pile pressing platform (c) is removed in time, and the elevation and the plane position of the prefabricated foundation (a) are retested, so that the next working procedure is ensured to be carried out after no error;
ninth step: placing column base steel bones (b); six column foot steel bones (b) are sequentially placed and fixed, when the column foot steel bones (b) are placed, accurate measurement and positioning are carried out on the top elevation, the bottom elevation, the perpendicularity and the plane position of the column foot steel bones (b), and certain measures are taken to fix the column foot steel bones (b);
tenth step: pouring quick hardening micro-expansion concrete; the hollow areas of the hollow end column (a 2) and the hollow end column (a 3) are poured by adopting the rapid hardening micro-expansion concrete with good fluidity, and meanwhile, the vibrating rod is adopted to vibrate, and the vibrating rod penetrates through the semicircular opening of the column foot bottom plate (b 3) to vibrate the concrete below the semicircular opening so as to ensure the pouring quality of the connecting node. After the concrete is poured, corresponding maintenance measures are carried out, and after the strength reaches the design requirement, the upper structure can be installed;
eleventh step: and finishing the construction of the prefabricated foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311253642.8A CN117468496A (en) | 2023-09-27 | 2023-09-27 | Full-prefabricated integral elevator foundation and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311253642.8A CN117468496A (en) | 2023-09-27 | 2023-09-27 | Full-prefabricated integral elevator foundation and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117468496A true CN117468496A (en) | 2024-01-30 |
Family
ID=89633831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311253642.8A Pending CN117468496A (en) | 2023-09-27 | 2023-09-27 | Full-prefabricated integral elevator foundation and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117468496A (en) |
-
2023
- 2023-09-27 CN CN202311253642.8A patent/CN117468496A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106854873A (en) | A kind of engineering method and garage parking in precast spliced sinking type garage parking | |
| CN104264865A (en) | Assembly type firewall | |
| CN206545215U (en) | A kind of precast spliced sinking type garage parking | |
| CN111254936A (en) | Open caisson reverse slip form guiding controllable settlement construction mechanism and construction method | |
| CN110952569A (en) | Inclined support type deep foundation pit supporting structure and construction method | |
| CN110593266B (en) | Construction method of foundation pit ramp reinforced supporting structure under heavy-load passing condition | |
| CN107558483B (en) | A kind of construction method of building foundation that installing wallboard | |
| CN108222054A (en) | Tower-crane foundation structure and its construction method | |
| CN107460886A (en) | A kind of lightweight steel construction assembles basis and its construction method of decoration integrated building | |
| CN117468496A (en) | Full-prefabricated integral elevator foundation and construction method thereof | |
| CN109183805B (en) | Prefabricated foundation pit bracing system and construction method thereof | |
| CN212896435U (en) | Combined prefabricated bearing platform pile foundation | |
| RU2037604C1 (en) | Method to reinforce building, construction foundation | |
| CN114293564A (en) | Construction method for foundation pit slope pile foundation of building engineering on site | |
| CN212052780U (en) | Oblique supporting type deep foundation pit supporting structure | |
| CN217536985U (en) | Foundation pit enclosure structure | |
| CN220978027U (en) | H-shaped steel foundation pit support system with water stopping function | |
| CN216865144U (en) | Novel anchor rod static pressure stake of assembled | |
| CN219175304U (en) | Steel construction foundation for construction | |
| KR102644085B1 (en) | Steel outer casing molding jig coated with lining for drilling clearance | |
| CN211036963U (en) | Cast-in-place and prefabricated underground continuous wall that combines together lead wall | |
| CN218373816U (en) | Prefabricated assembling protecting wall for manual hole digging pile | |
| CN218933149U (en) | SMW construction method pile structure | |
| KR101050271B1 (en) | Basic construction work method | |
| CN112482362B (en) | Construction method of assembled concrete crown beam |
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 |