CN114808929A - Method for connecting pile-column integrated cast-in-place pile and horizontal structure and connecting node - Google Patents
Method for connecting pile-column integrated cast-in-place pile and horizontal structure and connecting node Download PDFInfo
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- CN114808929A CN114808929A CN202210214597.4A CN202210214597A CN114808929A CN 114808929 A CN114808929 A CN 114808929A CN 202210214597 A CN202210214597 A CN 202210214597A CN 114808929 A CN114808929 A CN 114808929A
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
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- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- 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
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Abstract
The invention discloses a method for connecting a pile-column integrated cast-in-place pile with a horizontal structure and a connecting node, wherein the connecting node comprises a cast-in-place pile, a horizontal structure and a ring beam, and the horizontal structure is fixedly connected with the cast-in-place pile through the ring beam; a reinforcement cage is arranged inside the cast-in-place pile; the ring beam comprises a main rib arranged around the center of the ring beam and a stirrup arranged along the radial direction of the ring beam; the interface of the cast-in-place pile and the ring beam is a chiseled surface; be provided with the horizontal structure reinforcing bar in the horizontal structure, the horizontal structure reinforcing bar at the most marginal in bored concrete pile influence scope is walked around the bored concrete pile and is link up the setting, and remaining horizontal structure reinforcing bar in the bored concrete pile influence scope inserts curved anchor setting in the girt. This application is connected horizontal construction and bored concrete pile through setting up the ring roof beam, and the ring roof beam encircles the bored concrete pile setting and forms stable connection with the bored concrete pile, and horizontal construction's reinforcing bar inserts in the ring roof beam and with ring roof beam stable connection to make bored concrete pile, horizontal construction and ring roof beam form whole biography power node.
Description
Technical Field
The invention relates to a method for connecting a pile-column integrated cast-in-place pile with a horizontal structure and a connecting node, and belongs to the technical field of underground structure construction.
Background
With the acceleration of the urbanization process of China, the construction of the upper space of the ground is nearly saturated, and the development and utilization of the underground space of the city are effective means and inevitable ways for solving the problem of shortage of the land in the center of the city. However, the development and development of underground space in urban renovation areas are often restricted by old buildings on the ground surface and complex environments. In the engineering of the underground space development of old building structures, the underpinning of old building foundations is often required. In the conventional one-column one-pile structure, a vertical column pile reinforcement cage and a temporary steel vertical column which are dozens of meters long are used as supporting structures for underpinning old building foundations to carry out integral hoisting construction. The technology of directly extending a vertical column pile to the ground and directly replacing a temporary steel vertical column with a pile body exposed along with excavation to serve as a vertical column has appeared by utilizing integration of piles and columns to replace a column-pile structure. However, for the integrated pile-column cast-in-place pile, the cast-in-place pile has irregular surface and difficult-to-guarantee strength at the node of the pile body, and when the integrated pile-column cast-in-place pile is connected with a horizontal structure, the quality of the connection node is difficult to guarantee.
Disclosure of Invention
The application provides a method for connecting a pile-column integrated cast-in-place pile with a horizontal structure and a connecting node, which are used for solving the problems existing in the connection of the existing pile-column integrated cast-in-place pile with the horizontal structure.
In order to solve the technical problems, the invention comprises the following technical scheme:
a method for connecting a pile-column integrated cast-in-place pile and a horizontal structure comprises the following steps:
firstly, carrying out pile-column integrated construction to form a concrete cast-in-place pile;
excavating earthwork to a horizontal structure, and roughening a pile body of the cast-in-place pile within the elevation range of the horizontal structure;
binding ring beam main reinforcements around the cast-in-place piles, and binding horizontal structural reinforcements;
and step four, pouring concrete of the ring beam and the horizontal structure to enable the horizontal structure, the ring beam and the cast-in-place pile to form an integral force transfer node.
Further, the connection method further comprises the following steps:
fifthly, cutting off the filling piles outside the ring beam elevation range, and then cleaning the filling piles within the ring beam elevation range;
step six, stress bars are arranged in the ring beam hole, reinforcing mesh piece seals are arranged on the upper surface and the lower surface of the ring beam hole, and the reinforcing mesh pieces and the stress bars are anchored into the surrounding ring beam by adopting a bar planting measure;
and step seven, filling concrete in the ring beam hole.
Further, the minimum distance from the roughened surface to the axis of the cast-in-place pile is L min ；
The cast-in-place pile is internally provided with a reinforcement cage, the radius of the reinforcement cage is R, and L is satisfied min <R。
Further, in step one, carrying out the integrative bored concrete pile construction of stake post and include: processing a reinforcement cage; welding the U-shaped shear resistant ribs with the reinforcement cage, vertically arranging parts of two free ends of the U-shaped shear resistant ribs, which extend out of the reinforcement cage, lowering the U-shaped shear resistant ribs into pile holes along with the reinforcement cage, and pouring concrete to form a cast-in-place pile;
and in the second step, the pile body of the cast-in-place pile is roughened to expose the U-shaped shear-resistant ribs, and the free ends of the U-shaped shear-resistant ribs are horizontally arranged and inserted into the ring beam.
Further, in step one, carrying out the integrative bored concrete pile construction of stake post and include: processing a reinforcement cage; calculating the upper elevation and the lower elevation of the horizontal structure, and arranging a steel sleeve on a reinforcement cage of the cast-in-place pile according to the requirement;
and in the second step, roughening the pile body of the cast-in-place pile to expose the steel sleeve, and punching and plug-welding shear-resistant studs on the outer side of the steel sleeve.
Correspondingly, the invention also provides a connecting node of the pile-column integrated cast-in-place pile and the horizontal structure, which comprises the cast-in-place pile, the horizontal structure and the ring beam, wherein the horizontal structure is fixedly connected with the cast-in-place pile through the ring beam;
a reinforcement cage is arranged inside the cast-in-place pile;
the ring beam comprises a main rib arranged around the center of the ring beam and a stirrup arranged along the radial direction of the ring beam; the interface of the cast-in-place pile and the ring beam is a chiseled surface;
be provided with the horizontal structure reinforcing bar in the horizontal structure, the horizontal structure reinforcing bar at the most marginal in bored concrete pile influence scope is walked around the bored concrete pile and is link up the setting, and remaining horizontal structure reinforcing bar in the bored concrete pile influence scope inserts curved anchor setting in the girt.
Further, the minimum distance from the roughened surface to the axis of the cast-in-place pile is L min The radius of the steel reinforcement cage is R, and L is satisfied min <And R is shown in the specification. 8. The connection node of pile-column integrated cast-in-place pile and horizontal structure of claim 6,
and the upper interface and the lower interface of the ring beam and the cast-in-place pile are provided with slow expansion type expansion rubber strips which are arranged in a circular manner along one circumference of the pile body.
Furthermore, a U-shaped shear-resistant rib is arranged in the cast-in-place pile, the U-shaped shear-resistant rib is fixedly connected with a reinforcement cage of the cast-in-place pile, and two free ends of the U-shaped shear-resistant rib extend into the cast-in-place pile and are inserted into the ring beam.
Furthermore, a steel sleeve is arranged outside a reinforcement cage of the cast-in-place pile in the range of the upper elevation and the lower elevation of the horizontal structure, a stud is arranged outside the steel sleeve, one end of the stud is welded on the steel sleeve, and the other end of the stud extends into the ring beam.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: the horizontal structure is connected with the cast-in-place pile by arranging the ring beam, the ring beam is arranged around the cast-in-place pile and is stably connected with the cast-in-place pile, and the steel bar of the horizontal structure is inserted into the ring beam and is stably connected with the ring beam, so that the cast-in-place pile, the horizontal structure and the ring beam form an integral force transmission node. In addition, the integral stress characteristic of the interface is enhanced by the form of arranging the U-shaped shear resistant ribs or/and the steel sleeve with the stud.
Drawings
Fig. 1 is a schematic structural diagram of a connection node of a pile-column integrated cast-in-place pile and a horizontal structure in an embodiment of the invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of a cast-in-place pile and a ring beam according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a U-shaped shear-resistant rib arranged between a cast-in-place pile and a ring beam in the embodiment of the present invention;
FIG. 5 is a schematic structural view of a U-shaped shear bar arranged on a reinforcement cage according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the interface roughening of the cast-in-place pile and the horizontal arrangement of the free ends of the U-shaped shear ribs according to the embodiment of the invention;
FIG. 7 is a schematic structural diagram of a steel sleeve and a stud arranged between a cast-in-place pile and a ring beam in the embodiment of the invention;
FIG. 8 is a schematic diagram of a cast-in-place pile with a steel sleeve and a stud according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a steel sleeve arranged outside a reinforcement cage according to an embodiment of the present invention;
FIG. 10 is a schematic view of roughening an interface of a cast-in-place pile and arranging a stud outside a steel sleeve according to an embodiment of the invention;
FIG. 11 is a schematic diagram showing a ring beam with upper and lower cast-in-place piles cut away according to an embodiment of the present invention;
FIG. 12 is a schematic illustration of a bored pile in the area of a ring beam according to an embodiment of the present invention after chiseling;
fig. 13 is a schematic view of the ring beam in the embodiment of the invention after concrete is poured in the opening of the ring beam.
The numbers in the figures are as follows:
10-filling piles; 11-a reinforcement cage; 12-interface; 13-slow expansion type expansion rubber strips; 14-U-shaped shear resistant ribs; 15-steel sleeve; 16-a stud;
20-horizontal configuration; 21-horizontal structural steel bars;
30-ring beam; 31-main reinforcement; 32-lumbar muscle; 33-stirrup;
41-reinforcing mesh sheet; 42-concrete.
Detailed Description
The present invention provides a method for connecting a pile-column integrated cast-in-place pile to a horizontal structure and a connecting node thereof, which are described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent in conjunction with the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example one
As shown in fig. 1 to 3, the connection node of the pile-column integrated cast-in-place pile and the horizontal structure provided by the present embodiment includes a cast-in-place pile 10, a horizontal structure 20 and a ring beam 30, wherein the horizontal structure 20 is fixedly connected with the cast-in-place pile 10 through the ring beam 30.
The cast-in-place pile 10 is internally provided with a reinforcement cage 11, and the reinforcement cage 11 comprises a main rib and a spiral rib which are longitudinally arranged. The pile-column integrated cast-in-place pile 10 in this embodiment is constructed by constructing the cast-in-place pile 10 on the surface of the soil body, and integrating the piles in one pile-by-pile. Since the cast-in-place pile 10 is constructed underwater, the surface of the pile body thereof is irregular and the strength thereof is difficult to secure, and the surface thereof needs to be treated when being connected to the horizontal structure 20.
The ring beam 30 includes a main rib 31 and a wale 32 provided around the center of the ring beam 30, and a stirrup 33 provided along the radial direction of the ring beam 30. The interface 12 of the cast-in-place pile 10 and the ring beam 30 is a roughened surface formed by roughening the concrete on the surface of the cast-in-place pile 10. The roughened surface of the interface 12 can increase the roughness of the interface 12, increase the friction between the cast-in-place pile 10 and the ring beam 30, and increase the bearing capacity of the interface 12. Preferably, the minimum distance from the roughened surface to the axis of the cast-in-place pile is L min The radius of the reinforcement cage 11 is R, which satisfies L min <R so that the main ribs 31 are exposed to stably connect the ring beam 30 with the cast-in-place pile 10. Further, the upper interface and the lower interface of the ring beam 30 and the cast-in-place pile 10 are provided with slow expansion type expansion rubber strips 13, and the slow expansion type expansion rubber strips 13 are arranged around the pile body.
The horizontal structure 20 can be a horizontal beam or a horizontal plate, a horizontal structure steel bar 21 is arranged in the horizontal structure 20, the horizontal structure steel bar 21 at the edge in the influence range of the cast-in-place pile 10 is arranged by passing around the cast-in-place pile 10 in a penetrating way, and the rest horizontal structure steel bars 21 in the influence range of the cast-in-place pile 10 are inserted into the ring beam 30 to be bent and anchored.
Pile body and horizontal basement beam slab structure spatial position conflict among "stake is integrative" supporting system, leads to the unable direct pile body that passes of beam slab reinforcing bar, and this embodiment adopts to hug closely column pile week circle and sets up ring beam node, and the direct mode with ring beam node of horizontal structure beam slab realizes indirectly that the structure system draws through. According to the connection node of the pile-column integrated cast-in-place pile and the horizontal structure, the horizontal structure 20 is connected with the cast-in-place pile 10 by arranging the ring beam 30, the ring beam 30 is arranged around the cast-in-place pile 10 and is stably connected with the cast-in-place pile 10, and the steel bars of the horizontal structure 20 are inserted into the ring beam 30 and are stably connected with the ring beam 30, so that the cast-in-place pile 10, the horizontal structure 20 and the ring beam 30 form an integral force transmission node. The self weight of the underground horizontal structure beam plate and the temporary construction load are transmitted through the interface of the ring beam and the cast-in-place pile.
Further, as shown in fig. 4, U-shaped shear ribs 14 are provided in the cast-in-place pile 10, the U-shaped shear ribs 14 are fixedly connected to the reinforcement cage 11 of the cast-in-place pile 10, and both free ends of the U-shaped shear ribs 14 extend from the cast-in-place pile 10 and are inserted into the ring beam 30. As shown in fig. 5, during construction, the U-shaped shear-resistant bar 14 is first fixed to the reinforcement cage 11 of the cast-in-place pile 10, for example, welded to the main bar 31 of the reinforcement cage 11, and two portions of the free ends extending out of the reinforcement cage 11 are vertically disposed, and are lowered and poured into the pile body of the cast-in-place pile 10 along with the reinforcement cage 11; as shown in fig. 6, the cast-in-place pile 10 is roughened to expose the U-shaped shear ribs 14 and to have the free ends horizontally disposed and inserted into the ring beam 30.
Further, as shown in fig. 7 and 8, the cast-in-place pile 10 is provided with a steel sleeve 15 outside the steel reinforcement cage 11 within the range of the upper and lower elevations of the horizontal structure 20, a stud 16 is arranged outside the steel sleeve 15, one end of the stud 16 is welded on the steel sleeve 15, and the other end provided with a stud cap extends into the ring beam 30. As shown in fig. 9, during construction, the upper and lower elevations of the ring beam 30 are calculated, and a steel sleeve 15 is arranged on the reinforcement cage 11 of the cast-in-place pile 10 as required; as shown in fig. 10, after the construction of the cast-in-place pile 10 is completed, when a soil body is excavated to the horizontal structure 20, roughening the surface of the cast-in-place pile 10 to expose the steel sleeve 15, and plug-welding shear-resistant studs 16 and shear-resistant ring ribs in holes on the outer side of the steel sleeve 15; then binding the ring beam 30 reinforcing steel bars and the horizontal structure reinforcing steel bars 21, and then pouring the ring beam 30 and the horizontal structure 20.
Example two
The present embodiment provides a method for connecting a pile-column integrated cast-in-place pile with a horizontal structure, which is further described below with reference to fig. 1 to 10, and the method includes the following steps:
firstly, constructing a pile-column integrated cast-in-place pile 10;
excavating earth to the horizontal structure 20, and roughening the pile body of the cast-in-place pile 10 within the elevation range of the horizontal structure 20; preferably, the minimum distance from the roughened surface to the axial center of the cast-in-place pile 10 is L min The radius of the reinforcement cage 11 is R, which satisfies L min <R, thereby exposing the main bars 31 and stably coupling the ring beam 30 to the cast-in-place pile 10;
step three, binding ring beam main reinforcements 31 around the cast-in-place piles 10, and binding horizontal structural reinforcements 21; the horizontal structural steel bars 21 at the outermost edge in the influence range of the cast-in-place pile 10 are arranged around the cast-in-place pile 10 in a penetrating manner, and the rest horizontal structural steel bars 21 in the influence range of the cast-in-place pile 10 are inserted into the ring beam 30 to be bent and anchored;
and step four, pouring concrete of the ring beam 30 and the horizontal structure 20 to enable the horizontal structure 20, the ring beam 30 and the cast-in-place pile 10 to form an integral force transfer node.
According to the method for connecting the pile-column integrated cast-in-place pile and the horizontal structure, the horizontal structure 20 and the cast-in-place pile 10 are connected by arranging the ring beam 30, and the steel bars of the horizontal structure 20 are inserted into the ring beam 30 and are stably connected with the ring beam 30, so that the cast-in-place pile 10, the horizontal structure 20 and the ring beam 30 form an integral force transmission node.
Further, in the first step, the construction of the pile-column integrated cast-in-place pile 10 includes: processing a reinforcement cage 11, welding a U-shaped shear-resistant rib 14 with the reinforcement cage 11, vertically arranging parts of two free ends extending out of the reinforcement cage 11, putting the parts into a pile hole along with the reinforcement cage 11, and then pouring concrete to form a cast-in-place pile 10; in the second step, the pile body of the cast-in-place pile 10 is roughened to expose the U-shaped shear ribs 14, and the free ends are horizontally arranged and inserted into the ring beam 30. The U-shaped shear reinforcement 14 is welded on the reinforcement cage 11, and the free end extending out of the reinforcement cage 11 is bent by 90 degrees, so that the reinforcement cage 11 is conveniently lowered into the pile hole. The bored concrete pile 10 is roughened to expose U-shaped shear reinforcement 14, and the free end is bent to the level by vertical bending, thereby through U-shaped shear reinforcement 14 with bored concrete pile 10 and ring beam 30 body coupling, through the combined action of chisel hair face and U-shaped shear reinforcement 14, strengthen the whole stress characteristic in interface. By way of example, the U-shaped shear ribs 14 are located within the reinforcement cage 11 for a length of no less than 15cm, and are bound and fixed to the main ribs 31 at the bent free ends.
Further, in the first step, the construction of the pile-column integrated cast-in-place pile 10 includes: processing a steel reinforcement cage 11, arranging a steel sleeve 15 on the steel reinforcement cage 11 of the cast-in-place pile 10 as required, placing the steel reinforcement cage 11 in a pile hole, wherein the position of the steel sleeve corresponds to the position of the ring beam, and then pouring concrete to form the cast-in-place pile 10; in the second step, the pile body of the cast-in-place pile 10 is roughened to expose the steel sleeve, and the outer side of the steel sleeve 15 is perforated and plug-welded with shear-resistant studs 16 or shear-resistant ring ribs; then binding the ring beam 30 reinforcing steel bars and the horizontal structure reinforcing steel bars 21, and then pouring the ring beam 30 and the horizontal structure 20. In this embodiment, a steel sleeve 15 is pre-embedded on a reinforcement cage 11 of a cast-in-place pile 10, and then the cast-in-place pile 10 and a ring beam 30 are integrally connected by roughening the surface of the pile body and setting a stud 16 and a shear-resistant ring nail, and the overall stress characteristic of the interface is enhanced by the combined action of the roughened surface and the stud 16.
Further, referring to fig. 11 to 13, the construction method of the pile-column integrated ring beam 30 structure further includes the following steps:
fifthly, cutting off the cast-in-place piles 10 outside the elevation range of the ring beam 30, and then cleaning the cast-in-place piles 10 within the elevation range of the ring beam 30;
sixthly, stress bars (not shown) are arranged in the hole of the ring beam 30, reinforcing mesh sheets 41 are arranged on the upper surface and the lower surface of the hole of the ring beam 30 for sealing, and the reinforcing mesh sheets 41 and the stress bars are anchored into the peripheral ring beam 30 by adopting a bar planting measure;
and step seven, filling concrete 42 in the hole of the ring beam 30. Preferably, the micro-expansive concrete is filled.
The embodiment is suitable for pile-column integrated construction because the part of the cast-in-place pile 10 belonging to the pile in the pile-column integrated construction is permanently reserved, and the part belonging to the pile is removed after the underground building construction is finished, so that the problem of repairing the horizontal structure 20 after the cast-in-place pile 10 is removed is perfectly solved.
It should be noted that in the engineering of underground space development of old building structures, old building foundations often need to be underpinned, the clear height of old buildings is usually only 3 meters, and the available construction space is extremely narrow, so that the traditional construction method cannot be suitable for construction under the narrow condition in old buildings, in order to meet the requirement of low clearance, a mode of lengthening a drill rod section by section is adopted in drilling construction, a mode of splicing a reinforcement cage section by section is adopted, low clearance pile forming equipment developed by our company can successfully complete construction under the condition of the clear height of 3-5 m, and the problem that the traditional vertical support system of drilled vertical column piles and steel columns cannot be constructed inside a protected building is perfectly solved. And the cast-in-place pile and the horizontal structure connecting node of the embodiment are combined, so that the pile-column integrated cast-in-place pile can be well popularized and applied to the engineering of underground space development of old building structures.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for connecting a pile-column integrated cast-in-place pile and a horizontal structure is characterized by comprising the following steps:
firstly, carrying out pile-column integrated construction to form a concrete cast-in-place pile;
excavating earthwork to a horizontal structure, and roughening a pile body of the cast-in-place pile within the elevation range of the horizontal structure;
binding ring beam main reinforcements around the cast-in-place piles, and binding horizontal structural reinforcements;
and step four, pouring concrete of the ring beam and the horizontal structure to enable the horizontal structure, the ring beam and the cast-in-place pile to form an integral force transfer node.
2. The method for connecting a pile-column integrated cast-in-place pile to a horizontal structure according to claim 1, further comprising the steps of:
fifthly, cutting off the filling piles outside the ring beam elevation range, and then cleaning the filling piles within the ring beam elevation range;
step six, stress bars are arranged in the ring beam hole, reinforcing mesh piece seals are arranged on the upper surface and the lower surface of the ring beam hole, and the reinforcing mesh pieces and the stress bars are anchored into the circumferential ring beam by adopting a bar planting measure;
and step seven, filling concrete in the ring beam hole.
3. The method for connecting a pile-column integrated cast-in-place pile to a horizontal structure according to claim 1 or 2,
the minimum distance from the scabbling surface to the axis of the filling pile is L min ；
The cast-in-place pile is internally provided with a reinforcement cage, the radius of the reinforcement cage is R, and L is satisfied min <R。
4. The method for connecting a pile-column integrated cast-in-place pile to a horizontal structure according to claim 1 or 2,
in the first step, carrying out the construction of the pile-column integrated cast-in-place pile comprises: processing a reinforcement cage; welding the U-shaped shear resistant ribs with the reinforcement cage, vertically arranging parts of two free ends of the U-shaped shear resistant ribs, which extend out of the reinforcement cage, lowering the U-shaped shear resistant ribs into pile holes along with the reinforcement cage, and pouring concrete to form a cast-in-place pile;
and in the second step, the pile body of the cast-in-place pile is roughened to expose the U-shaped shear-resistant ribs, and the free ends of the U-shaped shear-resistant ribs are horizontally arranged and inserted into the ring beam.
5. The method for connecting a pile-column integrated cast-in-place pile to a horizontal structure according to claim 1 or 2,
in the first step, carrying out the construction of the pile-column integrated cast-in-place pile comprises: processing a reinforcement cage; calculating the upper elevation and the lower elevation of the horizontal structure, and arranging a steel sleeve on a reinforcement cage of the cast-in-place pile according to the requirement;
and in the second step, roughening the pile body of the cast-in-place pile to expose the steel sleeve, and punching and plug-welding shear-resistant studs on the outer side of the steel sleeve.
6. A connecting node of a pile-column integrated cast-in-place pile and a horizontal structure is characterized by comprising a cast-in-place pile, the horizontal structure and a ring beam, wherein the horizontal structure is fixedly connected with the cast-in-place pile through the ring beam;
a reinforcement cage is arranged inside the cast-in-place pile;
the ring beam comprises a main rib arranged around the center of the ring beam and a stirrup arranged along the radial direction of the ring beam; the interface of the cast-in-place pile and the ring beam is a chiseled surface;
be provided with the horizontal structure reinforcing bar in the horizontal structure, the horizontal structure reinforcing bar at the most marginal in bored concrete pile influence scope is walked around the bored concrete pile and is link up the setting, and remaining horizontal structure reinforcing bar in the bored concrete pile influence scope inserts curved anchor setting in the girt.
7. The connection node of pile-column integrated cast-in-place pile and horizontal structure of claim 6,
the minimum distance from the scabbling surface to the axis of the filling pile is L min The radius of the steel reinforcement cage is R, and L is satisfied min <R。
8. The connection node of pile-column integrated cast-in-place pile and horizontal structure of claim 6,
and the upper interface and the lower interface of the ring beam and the cast-in-place pile are provided with slow expansion type expansion rubber strips which are arranged in a circular manner along one circumference of the pile body.
9. The connection node of pile-column integrated cast-in-place pile and horizontal structure of claim 6,
and a U-shaped shear resistant rib is arranged in the cast-in-place pile, the U-shaped shear resistant rib is fixedly connected with a reinforcement cage of the cast-in-place pile, and two free ends of the U-shaped shear resistant rib extend into the cast-in-place pile and are inserted into the ring beam.
10. The connection node of pile-column integrated cast-in-place pile and horizontal structure of claim 6,
a steel sleeve is arranged outside a reinforcement cage of the cast-in-place pile in the upper elevation range and the lower elevation range of the horizontal structure, a stud is arranged outside the steel sleeve, one end of the stud is welded on the steel sleeve, and the other end of the stud stretches into the ring beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214597.4A CN114808929B (en) | 2022-03-07 | 2022-03-07 | Connection method and connection node of pile integrated cast-in-place pile and horizontal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214597.4A CN114808929B (en) | 2022-03-07 | 2022-03-07 | Connection method and connection node of pile integrated cast-in-place pile and horizontal structure |
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| JP2005232908A (en) * | 2004-02-23 | 2005-09-02 | Shimizu Corp | Joint structure of pile head section and constructing method of pile |
| CN101775844A (en) * | 2010-02-02 | 2010-07-14 | 华东建筑设计研究院有限公司 | Connecting joint of ring beam of steel core concrete column used for topdown construction method foundation pit engineering |
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