CN113323033A - Multifunctional measurement and control pile with stable structure and construction method thereof - Google Patents
Multifunctional measurement and control pile with stable structure and construction method thereof Download PDFInfo
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- CN113323033A CN113323033A CN202110519775.XA CN202110519775A CN113323033A CN 113323033 A CN113323033 A CN 113323033A CN 202110519775 A CN202110519775 A CN 202110519775A CN 113323033 A CN113323033 A CN 113323033A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The invention discloses a multifunctional measurement and control pile with stable structure and a construction method thereof, wherein the multifunctional measurement and control pile comprises: a plurality of cast-in-place piles for supporting a bottom plate of the foundation pit are embedded in the foundation pit; the bearing platform is poured at the upper end of a cast-in-place pile, and the vertical steel bars of the cast-in-place pile are anchored in the bearing platform; the containing pipe is vertically arranged on the bearing platform, the upper end of the containing pipe extends to the upper part of the bottom plate, and concrete is poured into the containing pipe; the inclined struts are connected between the two opposite sides of the accommodating pipe and the rest of the cast-in-place piles, and are arranged in a centrosymmetric manner by taking the accommodating pipe as a symmetric center; a forced centering disc for erecting the total station is embedded in the concrete at the upper end of the accommodating pipe; and a mounting base for mounting the level gauge, which is connected to the outside of the upper end of the accommodating tube. The invention solves the problems of low construction efficiency and low lofting positioning precision of the embedded part with high installation precision requirement in the bottom plate by adopting the traditional forced centering observation platform outside the foundation pit.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a multifunctional measurement and control pile with stable structure and a construction method thereof.
Background
The installation requirement of the underwater vibrating table process equipment is that 56 groups of actuator embedded parts are arranged in an ultra-thick foundation bottom plate (the thickness of the bottom plate is 5m) of the underwater vibrating table, and the 56 groups of actuator embedded parts provide enough supporting counter force for the vibrating table process equipment. Moreover, the installation accuracy requirement of the tie rod of the embedded part of the group actuator is extremely high, and the method specifically comprises the following steps: the plane positioning error of the bolt rod is +/-2 mm, and the elevation error is +/-2 mm.
In addition, as the construction of the super-thick foundation slab of the underwater vibration table is gradually advanced, the core area provided with the embedded parts is surrounded by the non-core area structure to form a typical 'quadrangle' structural area. Under the environment of the structure, the forced centering observation platform arranged on the outer side of the foundation pit is only used for carrying out embedded component assembly precision lofting, the sight is blocked, and precision positioning precision is reduced due to multiple station transfer.
Disclosure of Invention
In order to overcome the defects in the prior art, a multifunctional measurement and control pile with a stable structure and a construction method thereof are provided so as to solve the problems that the precision lofting control of embedded parts with high installation precision requirements in a bottom plate adopts the traditional forced centering observation platform outside a foundation pit, the construction efficiency is low, and the lofting positioning precision is low.
In order to achieve the above object, a multifunctional measurement and control pile with stable structure is provided, which comprises:
a plurality of cast-in-place piles for supporting a bottom plate of a foundation pit are embedded in the foundation pit;
the bearing platform is poured at the upper end of the cast-in-place pile, and the vertical steel bar of the cast-in-place pile is anchored in the bearing platform;
the containing pipe is vertically arranged on the bearing platform, the upper end of the containing pipe extends to the upper part of the bottom plate, and concrete is poured into the containing pipe;
the inclined struts are connected between the two opposite sides of the accommodating pipe and the rest of the cast-in-place piles, and are arranged in a centrosymmetric manner by taking the accommodating pipe as a symmetric center;
a forced centering disc for erecting the total station is embedded in the concrete at the upper end of the accommodating pipe; and
and the mounting base is used for mounting the level gauge and is connected to the outside of the upper end of the accommodating pipe.
Furthermore, the lower extreme of holding pipe is connected with the supporting disk that sets up along the horizontal direction, the bottom of supporting disk is connected with many support columns, the support column erects to be located the terminal surface of the upper end of bored concrete pile.
Furthermore, a plurality of perforation have been seted up to the outer fringe of supporting disk, and is a plurality of the perforation is followed the circumferencial direction interval of supporting disk sets up, the quantity of bored concrete pile's vertical reinforcing bar is many, many vertical reinforcing bar is followed the circumferencial direction setting of bored concrete pile just wears to locate one-to-one in the perforation.
Further, the mid-mounting of holding pipe have bury underground in multichannel stagnant water steel sheet in the bottom plate, multichannel the stagnant water steel sheet is followed the axial direction interval of holding pipe sets up.
Furthermore, the bottom plate of the container comprises a plurality of stand columns, the lower ends of the stand columns are embedded in the bottom plate, the stand columns are arranged at intervals along the circumferential direction of the containing pipe, a platform board is connected between the upper ends of the stand columns, a through hole is formed in the middle of the platform board, and the upper end of the containing pipe penetrates through the through hole.
The invention provides a construction method of a multifunctional measurement and control pile with stable structure, which comprises the following steps:
constructing a plurality of cast-in-place piles in a foundation pit, so that one cast-in-place pile is arranged at the point position of a measurement control point in the foundation pit;
pouring a bearing platform at the upper end of one cast-in-place pile arranged on the point location, and vertically arranging an accommodating pipe on the bearing platform, so that the accommodating pipe is vertically arranged at the point location of the measurement control point, and the elevation of the upper end of the accommodating pipe is higher than the elevation of the upper surface of the bottom plate of the foundation pit;
inclined struts are connected between the two opposite sides of the accommodating pipe and the rest of the cast-in-place piles, so that the inclined struts are arranged in a central symmetry mode by taking the accommodating pipe as a symmetry center;
pouring concrete into the accommodating pipe, and embedding the forced centering disc in the concrete at the upper end of the accommodating pipe;
a base is arranged outside the upper end of the accommodating pipe to form a multifunctional measurement and control pile with stable structure;
after the multifunctional measurement and control pile with the stable structure is formed, the base plate is poured in the foundation pit, so that the lower part of the multifunctional measurement and control pile with the stable structure is buried in the base plate, and the upper part of the multifunctional measurement and control pile with the stable structure extends to the upper part of the base plate.
Further, the step of pouring a bearing platform at the upper end of the cast-in-place pile arranged on the point location and vertically arranging the accommodating pipe on the bearing platform includes:
a plurality of support columns are vertically arranged on the end face of the upper end of the cast-in-place pile;
connecting a supporting disc to the upper ends of the supporting columns, so that the supporting disc is arranged along the horizontal direction;
connecting the lower end of the accommodating pipe to the supporting disc, so that the accommodating pipe is vertically arranged on the point position;
and pouring a bearing platform on the end surface of the upper end of the cast-in-place pile, so that the bearing platform is coated on the lower ends of the support columns, the support disc and the accommodating pipe.
The multifunctional measurement and control pile with the stable structure is arranged in an ultra-thick ultra-high precision foundation bottom plate in a foundation pit and serves as a fixed measurement station of a control point, the fixed measurement station takes root on a cast-in-place pile, and by adopting the control point arrangement method, the influence precision factors are fully considered, so that the positioning precision of the group actuator embedded part and the concrete structure is effectively ensured, the construction progress is accelerated, and the construction positioning precision is ensured. In addition, a fixed measuring station capable of utilizing the control point all the time from the beginning of bottom plate construction to the completion of the installation of engineering process equipment (group actuator embedded parts). The upper part of the multifunctional measurement and control pile stable in the structure exceeds the super-thick bottom plate by a certain height, so that the multifunctional measurement and control pile is not influenced by super-thick concrete pouring, can be stored for a long time, and solves the problem of establishing a plane control network once. Through the fixed survey station of laying stable control point in super thick bottom plate, reduced measuring error, guarantee that high accuracy group technology buries the piece and high accuracy concrete structure positioning accuracy, satisfied the construction accuracy requirement.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a multifunctional measurement and control pile with stable structure according to an embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of an upper end of an injection pile according to an embodiment of the present invention.
FIG. 4 is a top view of a support tray according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 4, the present invention provides a multifunctional measurement and control pile with stable structure, including: a plurality of cast-in-place piles 1, a bearing platform 2, an accommodating pipe 3, a plurality of inclined struts 4, a forced centering disc 5 and a mounting base 6.
The plurality of cast-in-place piles 1 are used for supporting a bottom plate of a foundation pit. A plurality of cast-in-place piles 1 are buried in the foundation pit.
The bearing platform 2 is poured at the upper end of a cast-in-place pile 1, and the cast-in-place pile is located at the point position of a measurement control point in the foundation pit. The vertical steel bars 11 of the cast-in-place pile 1 are anchored in the bearing platform 2.
The accommodating pipe 3 is vertically arranged on the bearing platform 2. The upper end of the accommodating pipe 3 extends to the upper part of the bottom plate, and concrete 30 is poured into the accommodating pipe 3.
The inclined struts 4 are connected between the two opposite sides of the accommodating pipe 3 and the rest of the cast-in-place pile 1, and the inclined struts 4 are arranged in a centrosymmetric mode by taking the accommodating pipe 3 as a symmetric center.
The forced centering disc 5 is used for installing and erecting the total station. The forced centering disc 5 is embedded in the concrete 30 at the upper end of the accommodating tube 3, so that the three-dimensional coordinates of the forced centering disc correspond to the three-dimensional coordinates of the point location of the measurement control point in the foundation pit.
The mounting base 6 is used for mounting a level. The settling base 6 is connected to the outside of the upper end of the accommodating tube 3.
In this embodiment, the thickness H of the bottom plate is 5m, and the bottom plate is poured on the cushion layer 9. And a plurality of cast-in-place piles 1 are supported at the bottom of the cushion layer of the bottom plate of the foundation pit. The height H' of the stable multifunctional measurement and control pile in the structure D, which exceeds the upper surface of the bottom plate, is 1.35 m.
The multifunctional measurement and control pile with stable structure is arranged in the ultra-thick and ultra-high precision foundation slab in the foundation pit and serves as a fixed measurement station of a control point, the fixed measurement station takes root on the cast-in-place pile, and the control point arrangement method is adopted, so that the influence precision factors are fully considered, the positioning precision of the group actuator embedded part and the concrete structure is effectively ensured, the construction progress is accelerated, and the construction positioning precision is ensured. In addition, a fixed measuring station capable of utilizing the control point all the time from the beginning of bottom plate construction to the completion of the installation of engineering process equipment (group actuator embedded parts). The upper part of the multifunctional measurement and control pile stable in the structure exceeds the super-thick bottom plate by a certain height, so that the multifunctional measurement and control pile is not influenced by super-thick concrete pouring, can be stored for a long time, and solves the problem of establishing a plane control network once. Through the fixed survey station of laying stable control point in super thick bottom plate, reduced measuring error, guarantee that high accuracy group technology buries the piece and high accuracy concrete structure positioning accuracy, satisfied the construction accuracy requirement.
In this embodiment, a support plate 31 disposed in a horizontal direction is connected to a lower end of the accommodating tube 3, and a plurality of support columns 32 are connected to a bottom of the support plate 31. The support column is vertically arranged on the end surface of the upper end of the cast-in-place pile 1.
In this embodiment, the outer diameter dimension of the support disc is larger than the outer diameter dimension of the receiving tube. The supporting disk and the accommodating pipe are coaxially arranged. Furthermore, the accommodating pipe and the cast-in-place pile are coaxially arranged. The outer edge of the support plate 31 is perforated with a plurality of through holes. The plurality of perforations of the support disc 31 are arranged at intervals in the circumferential direction of the support disc. The quantity of the vertical reinforcing bar 11 of bored concrete pile 1 is many, and many vertical reinforcing bars 11 set up and wear to locate in the perforation along the circumferencial direction of bored concrete pile 1 one-to-one.
As a preferred embodiment, a plurality of water stop steel plates 33 buried in the bottom plate are installed at the middle of the accommodating tube 3. The plurality of water stop steel plates are arranged at intervals along the axial direction of the accommodating pipe 3.
In this embodiment, the multifunctional measurement and control pile stable in structure further comprises an operation platform.
In particular, the operation platform comprises a plurality of uprights 7 and a platform plate 8. The lower end of the upright post 7 is embedded in the bottom plate. A plurality of columns 7 are arranged at intervals along the circumferential direction of the accommodating tube 3. A platform plate 8 is connected between the upper ends of the upright posts 7. The middle part of the platform plate 8 is provided with a through hole. The upper end of the containing tube 3 is arranged in the through hole in a penetrating way.
Furthermore, after the foundation pit is excavated, a cushion layer is constructed on the plurality of cast-in-place piles, so that the plurality of cast-in-place piles are supported at the bottom of the cushion layer. And after the cushion layer is constructed, pouring a bearing platform and erecting an operation platform. After the bottom plate is poured, the lower part of the operating platform is embedded in the bottom plate, and the upper part of the operating platform comprises a platform plate arranged above the bottom plate.
The invention provides a construction method of a multifunctional measurement and control pile with stable structure, which comprises the following steps:
s1: and constructing a plurality of cast-in-place piles 1 in the foundation pit, so that at least one cast-in-place pile 1 is arranged at the point position of the measurement control point in the foundation pit.
Firstly, point positions of 2 control points are arranged in a bottom plate structure of a core area of a group actuator embedded part, a multifunctional measurement and control pile is arranged in a central shaft mode, and a high-precision embedded part and a high-precision equipment pit are controlled by a symmetrical shaft method. The control point is designed to exceed the super-thick bottom plate by a certain height (H'), and is not influenced by pouring of the super-thick bottom plate, so that the control point is guaranteed to be stored for a long time and is always utilized from the beginning of bottom plate construction to the completion of installation of engineering process equipment.
S2: and pouring a bearing platform 2 at the upper end of a cast-in-place pile 1 arranged on the point location, and vertically arranging the accommodating pipe 3 on the bearing platform 2, so that the accommodating pipe 3 is vertically arranged on the point location of the measurement control point, and the elevation of the upper end of the accommodating pipe 3 is higher than that of the upper surface of the bottom plate of the foundation pit.
Specifically, step S2 includes:
and S21, vertically arranging a plurality of support columns on the end surface of the upper end of one cast-in-place pile 1 at the point position.
And (4) constructing a cast-in-place pile in advance at the point position of the designed measurement control point. And after the foundation pit is excavated, picking and chiseling the pile head of the cast-in-place pile to a designed elevation.
And S22, connecting a support disc to the upper ends of the support columns so that the support disc is arranged along the horizontal direction.
S23, connecting the lower end of the accommodating tube 3 to the supporting plate, so that the accommodating tube 3 is vertically located at a point.
And S24, pouring the bearing platform 2 on the end face of the upper end of the cast-in-place pile 1, so that the bearing platform 2 is coated on the lower ends of the support columns, the support disc and the accommodating pipe 3.
The supporting disc and the vertical steel bar 11 of the cast-in-place pile need to be welded firmly,
and (3) welding and fixing the accommodating pipe (with the diameter of 300mm and the wall thickness of 10mm) welded with the water stop steel plate with the supporting disc, and applying the accommodating pipe as a concrete bearing platform to ensure that the cast-in-place pile and the accommodating pipe are stably and reliably integrated.
S3: inclined struts 4 are connected between the two opposite sides of the accommodating pipe 3 and the rest of the cast-in-place piles 1, so that the inclined struts 4 are arranged in central symmetry by taking the accommodating pipe 3 as a symmetry center.
The bracing adopts the shaped steel, and it is effectively connected with the bored concrete pile, reaches the reliable and stable purpose of guaranteeing the holding pipe.
S4: concrete 30 is poured into the accommodating tube 3, and the forced centering plate 5 is embedded in the concrete 30 at the upper end of the accommodating tube 3.
Concrete is poured in the accommodating pipe, and a forced centering disc is buried in the center of the accommodating pipe and used for erecting the total station. The forced centering disc and the accommodating pipe are coaxially arranged.
S5: and a base 6 is arranged outside the upper end of the accommodating pipe 3 to form a stable multifunctional measurement and control pile in the structure.
The holding pipe is a steel pipe, and the outside of the holding pipe is welded with the mounting base of the level gauge and is used for erecting the level gauge to form a multifunctional measurement and control pile stable in structure.
S6: after the multifunctional measurement and control pile with the stable structure is formed, a bottom plate is poured in the foundation pit, so that the lower part of the multifunctional measurement and control pile with the stable structure is buried in the bottom plate, and the upper part of the multifunctional measurement and control pile with the stable structure extends to the upper part of the bottom plate.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. The utility model provides a stable multi-functional observing and controlling stake in structure which characterized in that includes:
a plurality of cast-in-place piles for supporting a bottom plate of a foundation pit are embedded in the foundation pit;
the bearing platform is poured at the upper end of the cast-in-place pile, and the vertical steel bar of the cast-in-place pile is anchored in the bearing platform;
the containing pipe is vertically arranged on the bearing platform, the upper end of the containing pipe extends to the upper part of the bottom plate, and concrete is poured into the containing pipe;
the inclined struts are connected between the two opposite sides of the accommodating pipe and the rest of the cast-in-place piles, and are arranged in a centrosymmetric manner by taking the accommodating pipe as a symmetric center;
a forced centering disc for erecting the total station is embedded in the concrete at the upper end of the accommodating pipe; and
and the mounting base is used for mounting the level gauge and is connected to the outside of the upper end of the accommodating pipe.
2. The structurally stable multifunctional measurement and control pile according to claim 1, wherein a support disc arranged in the horizontal direction is connected to the lower end of the accommodating pipe, a plurality of support columns are connected to the bottom of the support disc, and the support columns are vertically arranged on the end face of the upper end of the cast-in-place pile.
3. The structurally stable multifunctional measurement and control pile according to claim 2, wherein a plurality of through holes are formed in the outer edge of the supporting disc and are arranged at intervals in the circumferential direction of the supporting disc, the number of vertical steel bars of the cast-in-place pile is multiple, and the vertical steel bars are arranged in the circumferential direction of the cast-in-place pile and penetrate through the through holes in a one-to-one correspondence manner.
4. The multifunctional measurement and control pile stable in structure according to claim 1, characterized in that the middle of the accommodating pipe is provided with a plurality of water stop steel plates buried underground in the bottom plate, and the plurality of water stop steel plates are arranged at intervals along the axial direction of the accommodating pipe.
5. The multifunctional measurement and control pile with the stable structure in the claim 1, characterized by further comprising a plurality of upright columns, wherein the lower ends of the upright columns are buried in the bottom plate, the plurality of upright columns are arranged at intervals along the circumferential direction of the containing pipe, a platform plate is connected between the upper ends of the plurality of upright columns, a through hole is formed in the middle of the platform plate, and the upper end of the containing pipe is arranged in the through hole in a penetrating manner.
6. A construction method of a multifunctional measurement and control pile stable in a structure according to any one of claims 1 to 5, characterized by comprising the following steps:
constructing a plurality of cast-in-place piles in a foundation pit, so that one cast-in-place pile is arranged at the point position of a measurement control point in the foundation pit;
pouring a bearing platform at the upper end of one cast-in-place pile arranged on the point location, and vertically arranging an accommodating pipe on the bearing platform, so that the accommodating pipe is vertically arranged at the point location of the measurement control point, and the elevation of the upper end of the accommodating pipe is higher than the elevation of the upper surface of the bottom plate of the foundation pit;
inclined struts are connected between the two opposite sides of the accommodating pipe and the rest of the cast-in-place piles, so that the inclined struts are arranged in a central symmetry mode by taking the accommodating pipe as a symmetry center;
pouring concrete into the accommodating pipe, and embedding the forced centering disc in the concrete at the upper end of the accommodating pipe;
a base is arranged outside the upper end of the accommodating pipe to form a multifunctional measurement and control pile with stable structure;
after the multifunctional measurement and control pile with the stable structure is formed, the base plate is poured in the foundation pit, so that the lower part of the multifunctional measurement and control pile with the stable structure is buried in the base plate, and the upper part of the multifunctional measurement and control pile with the stable structure extends to the upper part of the base plate.
7. The construction method according to claim 6, wherein the step of placing a bearing platform on an upper end of a cast-in-place pile disposed at the point location and vertically disposing the receiving pipe on the bearing platform comprises:
a plurality of support columns are vertically arranged on the end face of the upper end of the cast-in-place pile;
connecting a supporting disc to the upper ends of the supporting columns, so that the supporting disc is arranged along the horizontal direction;
connecting the lower end of the accommodating pipe to the supporting disc, so that the accommodating pipe is vertically arranged on the point position;
and pouring a bearing platform on the end surface of the upper end of the cast-in-place pile, so that the bearing platform is coated on the lower ends of the support columns, the support disc and the accommodating pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110519775.XA CN113323033A (en) | 2021-05-13 | 2021-05-13 | Multifunctional measurement and control pile with stable structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110519775.XA CN113323033A (en) | 2021-05-13 | 2021-05-13 | Multifunctional measurement and control pile with stable structure and construction method thereof |
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2021
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| JP2000144904A (en) * | 1998-11-09 | 2000-05-26 | Fujita Corp | Joint construction between pile and upper structural skeleton in structure |
| US20150299978A1 (en) * | 2014-04-18 | 2015-10-22 | Hydrochina Huadong Engineering Corporation Limited | Connection Structure for Blocking Settlement of Ground |
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Application publication date: 20210831 |
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