CN210238492U - A turnable crown-beam micro-pile construction formwork - Google Patents
A turnable crown-beam micro-pile construction formwork Download PDFInfo
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- CN210238492U CN210238492U CN201921062147.8U CN201921062147U CN210238492U CN 210238492 U CN210238492 U CN 210238492U CN 201921062147 U CN201921062147 U CN 201921062147U CN 210238492 U CN210238492 U CN 210238492U
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Abstract
本实用新型公开了一种可周转的冠梁式微型桩施工模架，包括对基坑支护结构进行施工的水平模架，基坑支护结构包括多个微型桩和水平冠梁；水平模架位于水平冠梁所处的矩形沟槽内，水平模架包括内模、外模和模板连接结构，内模和外模组成冠梁成型模板且二者之间的空腔为水平冠梁的成型腔；水平模架上布设有多个护筒，模板连接结构布设于成型腔内。本实用新型结构简单、设计合理且加工制作及使用简便、使用效果好，采用内模与外模组成的水平模架对基坑支护结构中的各微型桩进行施工，通过水平模架对各微型桩进行简便、准确定位，能有效确保各微型桩的桩位准确性，确保各微型桩的施工质量，并能有效提高施工效率。
The utility model discloses a turnable crown beam type miniature pile construction formwork, comprising a horizontal formwork for constructing a foundation pit supporting structure, the foundation pit supporting structure comprising a plurality of micropiles and horizontal crown beams; The frame is located in the rectangular groove where the horizontal crown beam is located. The horizontal mold frame includes an inner mold, an outer mold and a template connection structure. The inner mold and the outer mold form a crown beam forming template and the cavity between them is the horizontal crown beam. Forming cavity; a plurality of protective cylinders are arranged on the horizontal die frame, and the connection structure of the formwork is arranged in the forming cavity. The utility model has the advantages of simple structure, reasonable design, convenient manufacture and use, and good use effect. The micro-piles can be easily and accurately positioned, which can effectively ensure the accuracy of the pile positions of the micro-piles, ensure the construction quality of the micro-piles, and can effectively improve the construction efficiency.
Description
Technical Field
The utility model belongs to the technical field of miniature pile construction, especially, relate to a can have enough to meet need crown beam type miniature pile construction die carrier.
Background
Miniature stake is the comparatively neotype excavation supporting form of application in the present domestic bridge engineering, and miniature stake generally indicates the drilling bored concrete pile of small bore, and the diameter of miniature stake is less than 300mm, adopts the form of multirow crowd's stake to arrange more, closely arranges between the stake, and the interval is less, and the pile bolck of miniature stake is pour the crown beam and is become whole and form a stifled crowd's stake barricade in order to connect, guarantees foundation ditch operation safety to reach deep basal pit side slope support's purpose. At present, when constructing miniature piles, most of the miniature piles are manually determined by paying off, pile positions of the miniature piles are respectively determined, pile casings are buried after the pile positions of the miniature piles are determined, then pile-by-pile hole forming construction is carried out, I-shaped steel is placed as a framework, then the miniature piles are cast into piles, and finally the miniature piles are constructed by driving crown beams to form a whole. However, when concrete is poured, the framework in the constructed miniature pile is easy to float up and is not easy to fix, and the pile casing deviates from the pile position during operation due to the small pile casing, light dead weight and the like, so that the problems of pile hole eccentricity, pile body inclination and the like are caused, the construction quality and the use effect of the constructed and formed miniature pile are seriously influenced, and the overall impression of all the formed miniature piles is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, a can have enough to meet the need crown beam formula miniature pile construction die carrier is provided, its simple structure, reasonable in design and processing preparation and use are simple and convenient, excellent in use effect, the horizontal die carrier that adopts centre form and external mold to constitute is under construction to each miniature pile in the excavation supporting structure, carry out portably, pinpoint each miniature pile through horizontal die carrier, can effectively ensure the pile position accuracy of each miniature pile, ensure the construction quality of each miniature pile, and can effectively improve the efficiency of construction.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a can have enough to meet need crown beam type miniature pile construction die carrier which characterized in that: the construction method comprises a horizontal formwork for constructing a foundation pit supporting structure, wherein the foundation pit supporting structure is a supporting structure of a cubic foundation pit, and the cross section of the cubic foundation pit is rectangular; the foundation pit supporting structure comprises a plurality of miniature piles which are vertically arranged and horizontal crown beams which are supported on the miniature piles, the miniature piles are arranged along the contour line of the cubic foundation pit, and the horizontal crown beams are rectangular and have the same shape as the cross section of the cubic foundation pit; the horizontal die frame is positioned in a rectangular groove where the horizontal crown beam is positioned, and the cross sections of the horizontal crown beam and the rectangular groove are both rectangular; the micro piles are cast-in-place concrete piles, the horizontal crown beams are reinforced concrete beams and are integrally cast with the micro piles; the shape of the rectangular groove is the same as that of the horizontal crown beam, the depth of the rectangular groove is the same as the height of the cross section of the horizontal crown beam, and the width of the cross section of the rectangular groove is larger than that of the cross section of the horizontal crown beam; the horizontal die frame comprises an inner die, an outer die and a template connecting structure, wherein the outer die is arranged on the outer side of the inner die, the template connecting structure is connected between the inner die and the outer die, the inner die, the outer die and the template connecting structure are all arranged on the same horizontal plane, the cross section heights of the inner die, the outer die and the template connecting structure are all the same as the depth of a rectangular groove, the inner die and the outer die are all rectangular templates which are horizontally arranged, and a cavity between the inner die and the outer die is a forming cavity of;
a plurality of pile casings for constructing pile holes of the miniature piles are distributed on the horizontal die frame, the pile casings are vertically distributed and are installed between the inner die and the outer die, and the pile casings are all positioned above the horizontal die frame; each pile casing is positioned right above the pile hole of one miniature pile, and the pile hole of each miniature pile is communicated with the forming cavity; the template connecting structure is arranged in the forming cavity and comprises a plurality of template connecting pieces, and one template connecting piece is arranged between every two adjacent protective cylinders.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: and the upper end of each protective cylinder extends to the position above the horizontal formwork.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: the rectangle template is formed by connecting four straight templates, four straight template is the front side template, is located respectively the back side template at front side template dead front, connect in front side template left end with left side template between the back side template left end with connect in front side template right-hand member with right side template between the back side template right-hand member, the front side template with the back side template is the symmetry and lays and the two is parallel laying, the left side template with the right side template is the symmetry and lays and the two all with the front side template is and lays perpendicularly, four straight template all is the level and lays and its equipartition locates on the same horizontal plane.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: the horizontal reinforcing mechanism comprises four oblique reinforcing beams which are all positioned at the inner side of the inner mold, and the four oblique reinforcing beams are respectively distributed at the inner sides of four top angles of the inner mold; and each inclined reinforcing beam is connected between two adjacent straight templates in the inner die.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: the cross section of the cubic foundation pit is rectangular, and the length of the front side template is greater than that of the left side template;
horizontal strengthening mechanism still includes that the twice lays the inboard slant tie-beam of centre form, twice the slant tie-beam is the X font and lays, twice the slant tie-beam all connects in the centre form the front side template with between the back side template.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: a vertical framework is arranged in a pile hole of each micro pile, and the vertical frameworks and the micro piles in which the vertical frameworks are arranged are coaxially arranged; the inner die and the outer die form a crown beam forming template of the horizontal crown beam, and the upper part of each vertical framework is connected with the crown beam forming template through a horizontal connecting piece.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: the four straight templates of the inner die and the outer die are all channel steel which is horizontally arranged, notches of the channel steel in the inner die face inwards, and notches of the channel steel in the outer die face outwards.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: four of the inner die are inner side die plates, four of the outer die are outer side die plates, and each of the inner side die plates and the outer side die plates is provided with a forming cavity between.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: the four straight templates of the inner mold are all inner templates, the four straight templates of the outer mold are all outer templates, and the template connecting piece is connected between one inner template and the outer template positioned on the outer side of the inner template;
the template connecting piece is a Z-shaped connecting steel plate, the Z-shaped connecting steel plate comprises two vertical connecting steel plates which are arranged in parallel and an oblique connecting steel plate which is connected between the two vertical connecting steel plates, the vertical connecting steel plates and the oblique connecting steel plates are both arranged in the vertical direction, and the heights of the vertical connecting steel plates and the oblique connecting steel plates are the same as the depth of the rectangular groove; the vertical connecting steel plates and the oblique connecting steel plates are connected between the inner side template and the outer side template positioned outside the inner side template, and the vertical connecting steel plates and the inner side template connected with the vertical connecting steel plates are vertically arranged.
Above-mentioned crown beam type miniature pile construction die carrier that can have enough to meet need, characterized by: the horizontal connecting piece is a bolt, and the bolt is vertically arranged with the inner side template connected with the bolt.
Compared with the prior art, the utility model has the following advantage:
1. simple structure, reasonable in design and processing preparation are simple and convenient, and the input cost is lower.
2. All parts are processed and formed in advance, and the processing quality can be effectively ensured.
3. Use easy and simple to handle, only need with the utility model discloses hoist to excavation fashioned rectangle slot in advance can, therefore on-the-spot only needs to accomplish horizontal die carrier hoist and mount, saves labour and time, can effectively shorten construction period, improves the efficiency of construction. Because the jacks on the internal mold, the external mold, the pile casing and the vertical framework are round holes which are processed and formed in a factory in advance, the processing quality of the jacks can be effectively guaranteed, the arrangement positions of the jacks can be accurately determined, the pile positions of all the miniature piles in the foundation pit supporting structure can be accurately determined, and the construction period can be effectively saved. In a construction site, the pile position of each miniature pile does not need to be subjected to paying-off measurement.
4. The horizontal formwork has a stable structure and is integrally heavy, and the position of each miniature pile on the horizontal formwork is predetermined, so that the pile driver can be used for directly inserting and driving the pile casing on the pile position of each miniature pile between the inner formwork and the outer formwork, the construction period can be greatly shortened, the pile position accuracy of each miniature pile can be ensured, and the problems of pile hole eccentricity and pile body inclination can be effectively avoided. Meanwhile, when a pile foundation framework (namely, a vertical framework) is placed in the pile hole, the vertical framework, the pile casing and the horizontal formwork are fixedly connected into a whole through the plug pin, so that the framework can effectively float and displace. In addition, in the pile head embedding horizontal die carrier of all miniature piles, horizontal die carrier played the effect of carrying out the wholeness connection to all miniature piles to horizontal die carrier also can directly regard as the hat roof beam to use, has saved the process of the cast-in-place construction of hat roof beam, after the construction is accomplished, the utility model discloses wholly transfer to next foundation ditch, realize portably, have enough to meet the need fast. And, adopt the utility model discloses can accomplish the work progress of each miniature stake among the excavation supporting structure portably, fast to can effectively accelerate excavation supporting structure's efficiency of construction, accelerate excavation process of foundation ditch, can effectively avoid pile foundation location and skeleton displacement problem, improve miniature stake pile back whole impression, also improved the efficiency of construction simultaneously, practice thrift construction cost.
To sum up, the utility model has the advantages of simple structure and reasonable design and processing preparation and use portably, excellent in use effect, the horizontal die carrier that adopts centre form and external mold to constitute is under construction to each miniature stake in the excavation supporting structure, carries out portably, accurate location to each miniature stake through horizontal die carrier, can effectively ensure the stake position accuracy of each miniature stake to can effectively improve the efficiency of construction. Meanwhile, the problems of pile foundation positioning and framework displacement can be effectively avoided, and the overall impression of the miniature pile after pile forming is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic plan view of the present invention.
Fig. 2 is a schematic view of the vertical structure of the present invention.
Fig. 3 is a partially enlarged schematic view of a portion a of fig. 1.
Fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.
Description of reference numerals:
1, a cubic foundation pit; 2-rectangular groove; 3, an inner mold;
4, external molding; 5, protecting the cylinder; 6, pile hole;
7-oblique reinforcing beam; 8, oblique connecting beams; 9-Z-shaped connecting steel plates;
10, inserting a pin; 11-vertical skeleton.
Detailed Description
As shown in fig. 1 and 2, the utility model comprises a horizontal formwork for constructing a foundation pit supporting structure, wherein the foundation pit supporting structure is a supporting structure of a cubic foundation pit 1, and the cross section of the cubic foundation pit 1 is rectangular; the foundation pit supporting structure comprises a plurality of miniature piles which are vertically arranged and horizontal crown beams which are supported on the miniature piles, the miniature piles are arranged along the contour line of the cubic foundation pit 1, and the horizontal crown beams are rectangular and have the same shape as the cross section of the cubic foundation pit 1; the horizontal formwork is positioned in the rectangular groove 2 where the horizontal crown beam is positioned, and the cross sections of the horizontal crown beam and the rectangular groove 2 are both rectangular; the micro piles are cast-in-place concrete piles, the horizontal crown beams are reinforced concrete beams and are integrally cast with the micro piles; the shape of the rectangular groove 2 is the same as that of the horizontal crown beam, the depth of the rectangular groove 2 is the same as the height of the cross section of the horizontal crown beam, and the width of the cross section of the rectangular groove 2 is larger than that of the cross section of the horizontal crown beam; the horizontal die carrier comprises an inner die 3, an outer die 4 and a template connecting structure, wherein the outer die 4 is arranged on the outer side of the inner die 3, the template connecting structure is connected between the inner die 3 and the outer die 4, the inner die 3, the outer die 4 and the template connecting structure are all arranged on the same horizontal plane, the cross section heights of the inner die 3, the outer die 4 and the template connecting structure are all the same as the depth of the rectangular groove 2, the inner die 3 and the outer die 4 are all rectangular templates which are horizontally arranged, and a cavity between the inner die 3 and the outer die 4 is a;
a plurality of pile casings 5 for constructing pile holes 6 of the miniature piles are distributed on the horizontal die frame, the pile casings 5 are vertically distributed and are installed between the inner die 3 and the outer die 4, and the pile casings 5 are all positioned above the horizontal die frame; each pile casing 5 is positioned right above the pile hole 6 of one miniature pile, and the pile hole 6 of each miniature pile is communicated with the forming cavity; the template connecting structure is arranged in the forming cavity and comprises a plurality of template connecting pieces, and one template connecting piece is arranged between every two adjacent pile casings 5.
The inner die 3 and the outer die 4 form a crown beam forming template of the horizontal crown beam.
During actual construction, the inner die 3 serves as an inner side keel of the horizontal die frame, and the outer die 4 serves as an outer side keel of the horizontal die frame, so that the horizontal die frame is simple in structure and easy to position. And the inner die 3 and the outer die 4 are connected through the template connecting structure, so that the structure is stable.
A vertical framework 11 is arranged in the pile hole 6 of each micro pile, and the vertical frameworks 11 and the micro piles in which the vertical frameworks are arranged are coaxially arranged; and the upper part of each vertical framework 11 is connected with the crown beam forming template through a horizontal connecting piece. Therefore, each vertical framework 11 is fixedly connected with the crown beam forming die plate into a whole through the horizontal connecting piece, the connection process of the vertical frameworks 11 and the horizontal die frame can be simply and quickly completed, the vertical frameworks 11 and the horizontal die frame are connected into a whole, the structure is firm and reliable, the structural integrity can be effectively ensured, and the vertical frameworks 11 can be accurately limited.
In this embodiment, the vertical frame 11 is an i-steel vertically arranged. In practical use, the vertical frame 11 may be other types of frames, such as square steel.
In this embodiment, the depth of the cubic foundation pit 1 is 4.5m, the length of the cross section is 13m, the width of the cross section is 9.3m, and the diameter of the micro pile is 200 mm.
During actual construction, the size of the cubic foundation pit 1, the number and the diameter of the micro piles and the arrangement positions of the micro piles can be adjusted correspondingly according to specific requirements.
It is right the utility model discloses add man-hour, process internal mold 3 and external mold 4 earlier, and adopt template connection structure is with internal mold 3 and external mold 4 welded fastening as an organic whole.
In this embodiment, the upper end of each casing 5 extends to above the horizontal formwork.
As shown in fig. 1, the rectangle template is formed by connecting four straight templates, four straight template is the front side template, is located respectively the back side template at front side template dead front side, connect in front side template left end with left side template between the back side template left end with connect in front side template right-hand member with right side template between the back side template right-hand member, the front side template with the back side template is the symmetry and lays and the two is parallel laying, the left side template with the right side template is the symmetry and lays and the two all with the front side template is perpendicular laying, four straight template all is the level and lays and its equipartition locates on the same horizontal plane. And two adjacent straight templates in the rectangular templates are fixedly connected in a welding mode.
In order to further improve the stability, the utility model also comprises a horizontal reinforcing mechanism for reinforcing the horizontal formwork, wherein the horizontal reinforcing mechanism comprises four oblique reinforcing beams 7, the four oblique reinforcing beams 7 are all positioned at the inner side of the inner mold 3, and the four oblique reinforcing beams 7 are respectively arranged at the inner sides of four vertex angles of the inner mold 3; each inclined reinforcing beam 7 is connected between two adjacent straight templates in the inner die 3.
In this embodiment, the cross section of cube foundation ditch 1 is the rectangle, the length of front side template is greater than the length of left side template.
Horizontal strengthening mechanism still includes that the twice lays the inboard slant tie-beam 8 of centre form 3, twice slant tie-beam 8 is the X font and lays, twice slant tie-beam 8 all connects in centre form 3 the front side template with between the back side template.
In this embodiment, the oblique reinforcing beam 7 and the oblique connecting beam 8 are both angle steels.
In practical use, the oblique reinforcing beams 7 and the oblique connecting beams 8 can also adopt other types of section steel bar members, such as round steel, square steel and the like.
As shown in fig. 3, the four flat templates of the inner mold 3 and the outer mold 4 are all channel steels laid horizontally, the notches of the channel steels in the inner mold 3 face inwards, and the notches of the channel steels in the outer mold 4 face outwards. In practical use, the inner mold 3 and the outer mold 4 may also be made of other types of steel mold plates.
The oblique reinforcing beam 7 and the oblique connecting beam 8 are connected with the inner die 3 in a welding mode.
When the horizontal formwork is actually machined, the inner die 3 and the outer die 4 are fixedly connected into a whole through the formwork connecting structure, and then the inclined reinforcing beam 7 and the inclined connecting beam 8 are fixed in the inner die 3.
As shown in fig. 1, the four straight templates of the inner mold 3 are inner templates, the four straight templates of the outer mold 4 are outer templates, and the molding cavity is formed between the web of each inner template and the web of the outer template located at the outer side of the inner template.
The template connecting piece is connected between one inner template and an outer template positioned on the outer side of the inner template;
as shown in fig. 4, the formwork connecting piece is a zigzag connecting steel plate 9, the zigzag connecting steel plate 9 comprises two vertical connecting steel plates arranged in parallel and one oblique connecting steel plate connected between the two vertical connecting steel plates, the vertical connecting steel plates and the oblique connecting steel plates are both arranged in a vertical direction, and the heights of the vertical connecting steel plates and the oblique connecting steel plates are the same as the depth of the rectangular groove 2; the vertical connecting steel plates and the oblique connecting steel plates are connected between the inner side template and the outer side template positioned outside the inner side template, and the vertical connecting steel plates and the inner side template connected with the vertical connecting steel plates are vertically arranged.
The vertical connecting steel plate and the oblique connecting steel plate are fixedly connected with the inner side template and the outer side template in a welding mode. Therefore, the connection reliability between the inner formwork and the outer formwork can be effectively ensured through the Z-shaped connecting steel plates 9, the inner formwork 3 and the outer formwork 4 can be effectively limited and reinforced, and the inner formwork 3 and the outer formwork 4 can be prevented from deforming.
In this embodiment, the vertical connecting steel plates and the oblique connecting steel plates are rectangular straight steel plates. And the plate thickness of the vertical connection steel plate and the oblique connection steel plate is 10 mm.
During the in-service use, horizontal connecting piece is temporary connection spare and it is for dismantling the connecting piece, can portably, carry out the dismouting fast.
In this embodiment, the horizontal connecting member is a plug 10, and the plug 10 is vertically arranged with the inner side template connected thereto.
In this embodiment, the casing 5 is a PVC casing, and the PVC casing is a cylindrical casing.
And, the protecting cylinder 5 is a PVC protecting cylinder with the bottom end clamped between the upper parts of the inner mold 3 and the outer mold 4, and is simple and convenient to actually install.
In practice, the horizontal connecting element can also adopt other types of detachable connecting elements, such as connecting bolts and the like.
In this embodiment, each of the inner side templates and each of the outer side templates are respectively provided with a plurality of insertion holes for inserting the bolts 10, and each of the upper portions of the vertical frameworks 11 is respectively provided with an insertion hole for inserting the bolt 10, so that actual insertion and extraction are very simple and convenient.
In this embodiment, the plug 10 is a twisted steel, and is simple and convenient to insert, reliable in connection, and low in investment cost.
And the diameter of the twisted steel bar is phi 16 mm.
The jacks on the inner die 3, the outer die 4, the pile casing 5 and the vertical framework 11 are round holes which are processed and formed in a factory in advance, so that the processing quality of the jacks can be effectively guaranteed, the arrangement positions of the jacks can be accurately determined, pile positions of all micro piles in the foundation pit supporting structure can be accurately determined correspondingly, and the construction period can be effectively shortened. In a construction site, the pile position of each miniature pile does not need to be subjected to paying-off measurement.
Utilize the utility model discloses it is right before the excavation supporting construction is under construction, earlier according to on the cube foundation ditch 1 of being under construction the structure and the size of horizontal crown beam, it is right horizontal die carrier is processed, makes horizontal die carrier's cross section height with the cross section height of horizontal crown beam is the same to make between centre form 3 and the external mold 4 the structure and the size of die cavity all with the structure and the size of horizontal crown beam are the same. Meanwhile, jacks are respectively processed on the inner mold 3 and the outer mold 4 according to the pile positions of the micro piles of the foundation pit supporting structure.
During actual construction, only paying-off measurement is needed to be carried out on the upper contour line of the cubic foundation pit 1, the construction position of the horizontal crown beam on the cubic foundation pit 1 to be constructed is determined according to paying-off measurement results, the rectangular groove 2 is excavated at the construction position of the horizontal crown beam, the horizontal formwork is horizontally placed in the rectangular groove 2, and the forming cavity between the inner die 3 and the outer die 4 in the horizontal formwork is located at the position of the horizontal crown beam, so that the horizontal formwork can be accurately positioned through the rectangular groove 2 which is excavated and formed in advance, and the method is simple and convenient to construct, convenient to position and accurate in positioning; then, inserting and driving a pile casing 5 on the pile position of each micro pile, performing hole forming construction on the pile hole 6 of each micro pile in the foundation pit supporting structure by using a drilling machine, then placing a vertical framework 11 in each pile hole 6 formed by construction by using hoisting equipment, and tightly connecting each vertical framework 11 with the crown beam forming template into a whole through the horizontal connecting piece; and finally, respectively pouring concrete to each micro pile in the foundation pit supporting structure, wherein the horizontal formwork is used as the horizontal crown beam, and a plurality of micro piles formed by construction are obtained.
And after the strength of the poured concrete reaches the strength of the designed frame, removing each horizontal connecting piece to disconnect the horizontal formwork from the vertical framework 11 of each micro pile, and then hoisting the horizontal formwork upwards by adopting hoisting equipment to finish the construction process of all the micro piles in the foundation pit supporting structure. Horizontal die carrier can hoist to next excavation supporting construction's construction position and drop into use once more, therefore the utility model discloses use easy and simple to handle and turnover efficient.
And after the poured concrete reaches the strength of the designed frame, the horizontal formwork can be used as the horizontal crown beam, so that after the construction of each micro pile is completed and before the horizontal formwork is hoisted, the excavation can be directly carried out on the cubic foundation pit 1, the construction efficiency can be effectively improved, and the construction cost can be saved. Thus, the construction process of the horizontal crown beam can be reduced.
During actual construction, the horizontal crown beam can be constructed, specifically, after the horizontal formwork is lifted upwards, a forming template of the horizontal crown beam is erected in the rectangular groove 2, and the horizontal crown beam is constructed. And finishing the construction process of the foundation pit supporting structure after the construction of the horizontal crown beam is finished.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (10)
1. The utility model provides a can have enough to meet need crown beam type miniature pile construction die carrier which characterized in that: the construction method comprises a horizontal formwork for constructing a foundation pit supporting structure, wherein the foundation pit supporting structure is a supporting structure of a cubic foundation pit (1), and the cross section of the cubic foundation pit (1) is rectangular; the foundation pit supporting structure comprises a plurality of miniature piles which are vertically arranged and horizontal crown beams which are supported on the miniature piles, the miniature piles are arranged along the contour line of the cubic foundation pit (1), and the horizontal crown beams are rectangular and have the same shape as the cross section of the cubic foundation pit (1); the horizontal formwork is positioned in a rectangular groove (2) where the horizontal crown beam is positioned, and the cross sections of the horizontal crown beam and the rectangular groove (2) are rectangular; the micro piles are cast-in-place concrete piles, the horizontal crown beams are reinforced concrete beams and are integrally cast with the micro piles; the shape of the rectangular groove (2) is the same as that of the horizontal crown beam, the depth of the rectangular groove (2) is the same as the height of the cross section of the horizontal crown beam, and the width of the cross section of the rectangular groove (2) is larger than that of the horizontal crown beam; the horizontal die carrier comprises an inner die (3), an outer die (4) and a template connecting structure, wherein the outer die (4) is arranged on the outer side of the inner die (3), the template connecting structure is connected between the inner die (3) and the outer die (4), the inner die (3), the outer die (4) and the template connecting structure are all arranged on the same horizontal plane, the cross section heights of the inner die (3), the outer die (4) and the template connecting structure are all the same as the depth of the rectangular groove (2), the inner die (3) and the outer die (4) are all rectangular templates which are arranged horizontally, and a cavity between the inner die (3) and the outer die (4);
a plurality of pile casings (5) for constructing pile holes (6) of the miniature piles are distributed on the horizontal die frame, the pile casings (5) are vertically distributed and are installed between the inner die (3) and the outer die (4), and the pile casings (5) are located above the horizontal die frame; each pile casing (5) is positioned right above a pile hole (6) of one miniature pile, and the pile hole (6) of each miniature pile is communicated with the forming cavity; the template connecting structure is arranged in the forming cavity and comprises a plurality of template connecting pieces, and one template connecting piece is arranged between every two adjacent pile casings (5).
2. The recyclable crown beam type micro pile construction formwork according to claim 1 is characterized in that: the upper end of each protective cylinder (5) extends to the position above the horizontal die frame.
3. The recyclable crown beam type micro-pile construction formwork according to claim 1 or 2, characterized in that: the rectangle template is formed by connecting four straight templates, four straight template is the front side template, is located respectively the back side template at front side template dead front, connect in front side template left end with left side template between the back side template left end with connect in front side template right-hand member with right side template between the back side template right-hand member, the front side template with the back side template is the symmetry and lays and the two is parallel laying, the left side template with the right side template is the symmetry and lays and the two all with the front side template is and lays perpendicularly, four straight template all is the level and lays and its equipartition locates on the same horizontal plane.
4. The recyclable crown beam type micro pile construction formwork according to claim 3 is characterized in that: the horizontal reinforcing mechanism comprises four oblique reinforcing beams (7), the four oblique reinforcing beams (7) are all positioned on the inner side of the inner mold (3), and the four oblique reinforcing beams (7) are respectively arranged on the inner sides of four top angles of the inner mold (3); each inclined reinforcing beam (7) is connected between two adjacent straight templates in the inner die (3).
5. The recyclable crown beam type micro pile construction formwork according to claim 4 is characterized in that: the cross section of the cubic foundation pit (1) is rectangular, and the length of the front side template is greater than that of the left side template;
horizontal strengthening mechanism still includes twice lay in the inboard slant tie-beam (8) of centre form (3), twice slant tie-beam (8) are the X font and lay, twice slant tie-beam (8) all connect in centre form (3) preceding side form board with between the back side form board.
6. The recyclable crown beam type micro pile construction formwork according to claim 3 is characterized in that: a vertical framework (11) is arranged in each pile hole (6) of each micro pile, and the vertical frameworks (11) and the micro piles in which the vertical frameworks are arranged are coaxially arranged; the inner die (3) and the outer die (4) form a crown beam forming template of the horizontal crown beam, and the upper part of each vertical framework (11) is connected with the crown beam forming template through a horizontal connecting piece.
7. The recyclable crown beam type micro pile construction formwork according to claim 3 is characterized in that: the four straight templates of the inner die (3) and the outer die (4) are all channel steel which is horizontally arranged, the notches of the channel steel in the inner die (3) face inwards, and the notches of the channel steel in the outer die (4) face outwards.
8. The recyclable crown beam type micro pile construction formwork of claim 7 is characterized in that: four of centre form (3) the straight template is inboard template, four of external mold (4) the straight template is outside template, every the web of inboard template with be located its outside be the molding cavity between the web of outside template.
9. The recyclable crown beam type micro pile construction formwork according to claim 3 is characterized in that: the four straight templates of the inner mold (3) are all inner templates, the four straight templates of the outer mold (4) are all outer templates, and the template connecting piece is connected between one inner template and the outer template positioned on the outer side of the inner template;
the template connecting piece is a Z-shaped connecting steel plate (9), the Z-shaped connecting steel plate (9) comprises two vertical connecting steel plates which are arranged in parallel and an oblique connecting steel plate which is connected between the two vertical connecting steel plates, the vertical connecting steel plates and the oblique connecting steel plates are both arranged in the vertical direction, and the heights of the vertical connecting steel plates and the oblique connecting steel plates are the same as the depth of the rectangular groove (2); the vertical connecting steel plates and the oblique connecting steel plates are connected between the inner side template and the outer side template positioned outside the inner side template, and the vertical connecting steel plates and the inner side template connected with the vertical connecting steel plates are vertically arranged.
10. The recyclable crown beam type micro pile construction formwork according to claim 6 is characterized in that: the horizontal connecting piece is a bolt (10), and the bolt (10) is vertically arranged with the inner side template connected with the bolt.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006086A (en) * | 2021-03-12 | 2021-06-22 | 上海市隧道工程轨道交通设计研究院 | Combination formula underground structure based on frame pile and miniature composite pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006086A (en) * | 2021-03-12 | 2021-06-22 | 上海市隧道工程轨道交通设计研究院 | Combination formula underground structure based on frame pile and miniature composite pile |
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