CN114541421A - Subway station guide wall auxiliary construction device and method - Google Patents
Subway station guide wall auxiliary construction device and method Download PDFInfo
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- CN114541421A CN114541421A CN202210444274.4A CN202210444274A CN114541421A CN 114541421 A CN114541421 A CN 114541421A CN 202210444274 A CN202210444274 A CN 202210444274A CN 114541421 A CN114541421 A CN 114541421A
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- guide wall
- subway station
- expansion
- auxiliary construction
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
- E02D17/083—Shoring struts
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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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a subway station guide wall auxiliary construction device and a method, which relate to the field of subway construction and comprise supporting plates, expansion mechanisms and hydraulic cylinders, wherein each expansion mechanism is a quadrilateral structure formed by sequentially hinging four rod pieces end to end, two ends of each hydraulic cylinder are respectively hinged with a group of opposite angles of the quadrilateral structure, the other group of opposite angles of the quadrilateral structure are respectively hinged with the supporting plates, at least three expansion mechanisms which are arranged in a non-collinear way are connected between two parallel supporting plates, the hydraulic cylinders change the distance between the two corresponding supporting plates through expansion and contraction, and at least one expansion structure is used for connecting external hoisting equipment through flexible cables; adopt interval adjustable construction equipment, utilize the flexible interval that cooperates the quadrangle structure adjustment backup pad of pneumatic cylinder, satisfy the support demand that different width led the wall structure, after through hoist and mount transposition position, the quick adjustment of interval is accomplished in the pneumatic cylinder action, and the construction is quick with the demolish process.
Description
Technical Field
The invention relates to the field of subway construction, in particular to a subway station guide wall auxiliary construction device and method.
Background
In the auxiliary construction process of the guide wall of the subway station, the subway station plays an important role as a key node of a construction section; the construction of an underground continuous wall is required when a subway station is constructed, and the underground continuous wall is a continuous reinforced concrete wall built underground and serves as a water intercepting, seepage preventing, bearing and retaining structure; the guide wall is used as the first step of the underground continuous wall and is the key for ensuring the accurate position and the grooving quality of the underground continuous wall. The guide wall can provide guide for grooving of the grooving machine; can store mud and prevent the notch from collapsing; can be used as the reference for horizontal and vertical measurement during construction; and calibration is provided for placing the reinforcement cage, placing the concrete guide pipe and forming the groove machine.
The inventor finds that in the prior art, in the construction process of the guide wall, generally, the groove is dug, the reinforcing mesh is arranged on the groove wall, the template structure is arranged in the groove, then concrete is poured between the template structure and the side wall of the guide wall groove, and the guide wall is formed after curing and forming; however, the template structure in the existing guide wall construction process is a woodworking frame structure, and the construction and dismantling process is slow, so that the progress of guide wall construction is influenced; the frame structure needs to be rebuilt for the guide wall structures with different widths, the universality and the width adjustment cannot be realized, and the requirement of the construction period is difficult to meet.
Disclosure of Invention
The invention aims to provide a subway station guide wall auxiliary construction device and a method aiming at the defects in the prior art.
The invention aims to provide a subway station guide wall auxiliary construction device, which adopts the following technical scheme:
the expansion structure is a quadrilateral structure formed by sequentially hinging four rods end to end, a group of opposite angles of the quadrilateral structure are respectively hinged to two ends of the hydraulic cylinder, a supporting plate is respectively hinged to the other group of opposite angles of the quadrilateral structure, the supporting plate is used for combining a guide wall to form a grouting area, at least three expansion mechanisms which are arranged in a non-collinear mode are connected between two parallel supporting plates, the hydraulic cylinder changes the distance between the two corresponding supporting plates through stretching and retracting, the hydraulic cylinders at different heights are extended asynchronously, and at least one expansion structure is used for being connected with external hoisting equipment through a flexible cable.
Further, a template is attached to one side of the support plate away from the expansion structure and used for facing the side wall of the groove.
Furthermore, a support frame is arranged on the support plate, one side of the support frame is connected with the support plate, and the other side of the support frame is hinged with the corner of the quadrilateral structure.
Furthermore, the support frame includes the bracing piece, and two bracing pieces one end connection expanding mechanism after butt joint, the different positions of backup pad are connected respectively to the other end, and two bracing pieces combine the backup pad to form the triangle-shaped structure.
Furthermore, the four rod pieces corresponding to the expansion mechanism are equal in axial length and are sequentially hinged end to form a diamond structure.
Furthermore, the positions of a group of diagonal connecting supporting plates of the expansion mechanism are at equal heights, and the axis of the hydraulic cylinder is kept vertical.
Furthermore, the expansion mechanisms are distributed in an upper layer and a lower layer in the vertical direction, at least one expansion mechanism on each layer is arranged at the same height as the expansion mechanisms on the same layer, and the corresponding hydraulic cylinders extend synchronously to increase the distance between the two supporting plates.
Further, the flexible cable connection is located on a relatively higher expansion mechanism.
The second purpose of the invention is to provide a subway station guide wall auxiliary construction method, which utilizes the subway station guide wall auxiliary construction device, and comprises the following steps:
excavating a guide wall groove, and arranging a reinforcing mesh on the side wall of the groove body;
the flexible cable is connected with the expansion mechanism and hoisted, and the support plate is conveyed into the guide wall groove and is parallel to the side wall of the guide wall groove;
the hydraulic cylinder acts, the distance between the two support plates is adjusted until the distance meets a set value, the length of the hydraulic cylinder is maintained, and concrete is poured between the side wall of the guide wall groove and the support plates;
after the concrete is cured, extending the hydraulic cylinder to reduce the distance between the two supporting plates so as to separate from the concrete;
the whole body is taken out from the guide wall groove by the flexible cable hoisting expansion mechanism.
Further, after concrete curing is finished, the hydraulic cylinders are controlled to extend from top to bottom in sequence according to the positions of the expansion mechanisms.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) adopt interval adjustable construction equipment, utilize the flexible interval that cooperates the quadrangle structure adjustment backup pad of pneumatic cylinder, satisfy the support demand that different width led the wall structure, after through hoist and mount transposition position, the quick adjustment of interval is accomplished in the pneumatic cylinder action, and the construction is quick with the demolish process.
(2) Adopt expanding mechanism to combine the backup pad to form interval adjustable and lead wall supporting template, compare in traditional carpenter's frame construction, can take one's place by rapid prototyping, reduce the engineering time and improve the construction precision, the wall construction demand that leads of adaptation multiple different width to improve the efficiency of construction.
(3) The expansion mechanism cooperates the flexible of pneumatic cylinder, can enough increase the interval of two backup pads fast, and the adaptation formwork process also can reduce the interval of two backup pads fast, and the adaptation form removal process carries out quick response according to the formwork of reality, form removal demand, improves the efficiency in the supplementary work progress of subway station guide wall.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic view of the overall structure of an auxiliary construction apparatus according to embodiments 1 and 2 of the present invention.
Fig. 2 is a schematic structural view of the hydraulic cylinder in embodiments 1 and 2 of the present invention during extension.
In the figure, 1, a guide wall groove, 2, a support plate, 3, a support frame, 301, a support rod, 4, an expansion mechanism, 401, a rod piece, 5, a hydraulic cylinder, 6, a template, 7 and a flexible cable.
Detailed Description
As introduced in the background art, the formwork structure in the guide wall construction process in the prior art is a woodworking frame structure, and the construction and dismantling process is slow, so that the progress of the guide wall construction is influenced; the frame structure needs to be rebuilt for the guide wall structures with different widths, so that the universality and width adjustment cannot be realized, and the requirement of the construction period cannot be met; aiming at the problems, the invention provides a subway station guide wall auxiliary construction device and a method.
Example 1
In a typical embodiment of the present invention, as shown in fig. 1 to 2, a subway station guide wall auxiliary construction device is provided.
Mainly comprises a supporting plate 2, an expansion mechanism 4 and a hydraulic cylinder 5. Taking a pair of support plates 2 arranged at intervals as an example, the two support plates 2 are arranged in parallel, the expansion mechanism 4 is positioned between the support plates 2, and one side of the support plate 2 far away from the expansion mechanism 4 is used for facing the side wall of the guide wall slot 1 in use and is arranged in parallel with the side wall of the guide wall slot 1.
The hydraulic cylinder 5 is matched with the expansion mechanism 4 and used as a power source for the expansion mechanism 4 to act, and the telescopic action of the hydraulic cylinder 5 acts on the support plate 2 through the expansion mechanism 4, so that the distance between the support plates 2 is changed or fixed.
The expansion mechanism 4 is fixed after adjusting the distance between the two supporting plates 2, the supporting plates 2 are used as supporting templates 6, a forming cavity is formed by combining the side walls of the guide wall, concrete is poured between the supporting plates 2 and the side walls of the guide wall groove 1, and after the concrete is cured and formed, the supporting plates 2 are removed, so that the construction of the guide wall is completed.
Compared with the traditional building and dismantling of a woodworking frame structure, the building and dismantling of the woodworking frame structure can be faster through the support plates 2 matched with the expansion mechanism 4, the expansion mechanism 4 increases the distance between the two support plates 2 to the required width and then fixes the support plates to complete the formwork erecting process; after the concrete is cured and formed, the expansion mechanism 4 reduces the distance between the two support plates 2, so that the support plates 2 are separated from the formed concrete, and the form removal process is completed.
Through 2 interval changes of pneumatic cylinder 5 drive backup pad, can realize formwork and form removal process fast, need not numerous and diverse carpenter's frame construction, use manpower sparingly and the material, to the comparatively nervous subway station of construction period lead the supplementary work progress of wall, can improve the efficiency of construction.
It can be understood that the length of the guide wall is configured according to the subway station area assisted by the guide wall of the subway station, and the vertical length of the support plate 2 is configured according to the depth of the guide wall, so that the vertical length of the support plate 2 is slightly larger than the depth of the guide wall.
The backup pad 2 can adopt and splice the backup pad 2 more on leading wall length direction, does the shutoff to its concatenation seam position and handles, avoids oozing of pouring concrete in-process concrete.
Specifically, the expansion structure is a quadrilateral structure formed by sequentially hinging four rod pieces 401 end to end, two ends of the hydraulic cylinder 5 are respectively hinged with a group of opposite angles of the quadrilateral structure, the other group of opposite angles of the quadrilateral structure are respectively hinged with the supporting plates 2, one supporting plate 2 is connected with one angle of the quadrilateral, and the other supporting plate 2 is connected with the other angle of the quadrilateral.
At least three expansion mechanisms 4 which are arranged in a non-collinear way are connected between the two parallel supporting plates 2, and the distance between the two corresponding supporting plates 2 is changed by the hydraulic cylinder 5 through expansion and contraction.
According to the principle that three points determine a plane, at least three expansion structures are arranged, so that the two support plates 2 can be kept in a parallel state and can be correspondingly parallel to the two side walls of the wall guide groove 1 at the same time.
It will be understood that the number of the expansion mechanisms 4 can be adjusted, when the arrangement is more than 3, the expansion mechanisms 4 are distributed in two layers along the vertical direction, at least one expansion mechanism 4 in each layer, the expansion mechanisms 4 in the same layer are arranged at the same height, and the corresponding hydraulic cylinders 5 are extended synchronously.
Through carrying out synchro control with the expanding mechanism 4 of same high position, can pull up from same high position at the form removal in-process, start form removal or begin form removal from the bottom from the top promptly, compare in all expanding mechanism 4 synchro changes, can utilize one end deviation to exert oneself, reduce the form removal degree of difficulty, avoid simultaneously the action to drive the concrete deformation damage.
Adopt interval adjustable construction equipment, utilize the flexible cooperation quadrangle structure adjustment backup pad 2's of pneumatic cylinder 5 interval, satisfy the support demand of different width guide wall structures, after through hoist and mount transposition position, the quick adjustment of interval is accomplished in the action of pneumatic cylinder 5, and the construction is quick with the demolition process.
For protection of the structure of the support plate 2, in this embodiment a template 6 is attached to the side of the support plate 2 remote from the expanded structure, for facing the trench side walls.
Through setting up the template 6 that replaces 2 contact concretes of backup pad, can avoid the direct contact of concrete and backup pad 2, according to the concrete of difference, the selection coating has the template 6 of suitable debonding agent, conveniently carries out demolising of construction equipment, avoids damaging 2 structures in backup pad, improves backup pad 2's volume durability.
It will be appreciated that the attachment of the template 6 to the support plate 2 may alternatively be a bolted connection, with a plurality of bolt arrays being arranged on the template 6 to secure the template 6 to the support plate 2.
When the template 6 is dismantled, the template 6 can be dismantled by dismantling the bolts, and after the new template 6 is replaced, the bolts are reused for fixing.
The four rod pieces 401 corresponding to the expansion mechanism 4 are equal in axial length and are sequentially hinged end to form a diamond structure; the expansion mechanism 4 is in a position of equal height with a group of diagonal connection supporting plates 2, and the axis of the hydraulic cylinder 5 is kept vertical.
Adopt rhombus expansion structure, can be when pneumatic cylinder 5 is flexible, the 2 actions of backup pad of synchronous drive both sides, the convenience is fixed a position according to central point when hoist and mount to the adjustment of its interval, after the location for backup pad 2 to both sides removal can.
Adopt expanding mechanism 4 to combine backup pad 2 to form interval adjustable to lead wall supporting template 6, compare in traditional carpenter's frame construction, can take one's place by rapid prototyping, reduce the engineering time and improve the construction precision, the wall construction demand that leads of multiple different width is adapted to improves the efficiency of construction.
In order to avoid the stress concentration of the supporting plate 2 and the deformation of the supporting plate 2 caused by the pushing and pulling of the expanding mechanism 4 on the supporting plate 2, in this embodiment, the supporting plate 2 is provided with a supporting frame 3, one side of the supporting frame 3 is connected with the supporting plate 2, and the other side is hinged with the corner of the quadrilateral structure.
The connecting position of the expansion mechanism 4 and the supporting plate 2 is increased by utilizing the structure of the supporting frame 3, so that the stress dispersion of the expansion mechanism 4 acting on the supporting plate 2 is relieved when the force is output, the deformation of the supporting plate 2 is relieved, and the quality and the precision of the formed supporting structure are improved.
The support frame 3 comprises support rods 301, one ends of the two support rods 301 are connected with the expansion mechanism 4 after being butted, the other ends of the two support rods 301 are respectively connected with different positions of the support plate 2, and the two support rods 301 are combined with the support plate 2 to form a triangular structure.
It is understood that in other embodiments, the supporting rods 301 may be arranged more than one, so that after the supporting rods are formed into a pyramid structure or a prism structure, and then the expansion mechanism 4 is connected, the force applied by the expansion mechanism 4 is effectively dispersed by the plurality of supporting rods 301, thereby reducing the stress concentration problem.
At least one expansion structure is used for connecting with external hoisting equipment through a flexible cable 7, and the flexible cable 7 is connected with the expansion structure 4 which is relatively higher.
Example 2
In another exemplary embodiment of the present invention, as shown in fig. 1 to 2, a method for assisting the construction of a guide wall of a subway station is provided, which uses the device for assisting the construction of a guide wall of a subway station as described in example 1.
The method comprises the following steps:
excavating a guide wall groove 1, and arranging a reinforcing mesh on the side wall of the groove body;
the flexible cable 7 is connected with the expansion mechanism 4 and hoisted, and is conveyed into the guide wall groove 1, and the support plate 2 is parallel to the side wall of the guide wall groove 1;
the hydraulic cylinder 5 acts, the length of the hydraulic cylinder 5 is maintained after the distance between the two support plates 2 is adjusted to meet a set value, and concrete is poured between the side wall of the wall guide groove 1 and the support plates 2;
after the concrete is cured, extending the hydraulic cylinder 5 to reduce the distance between the two support plates 2 so as to separate from the concrete;
the expansion mechanism 4 is lifted by the flexible cable 7 to be taken out of the guide wall groove 1 in a whole.
It can be understood that a plurality of subway station guide wall auxiliary construction devices can be sequentially arranged along the length direction of the guide wall, the guide wall construction position is covered, and anti-leakage treatment is carried out on the 2 adjacent support plates.
After the concrete curing is finished, the hydraulic cylinder 5 is controlled to extend from top to bottom according to the position of the expansion mechanism 4.
Through carrying out synchro control with the expanding mechanism 4 of same high position, can pull up from same high position at the form removal in-process, start form removal from the top promptly, compare in all expanding mechanism 4 synchro variation, can utilize one end deviation to exert oneself, reduce the form removal degree of difficulty, avoid simultaneously the action to drive the concrete deformation damage.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a subway station leads wall auxiliary construction device, a serial communication port, the camera comprises supporting plates, expanding mechanism and pneumatic cylinder, expanding mechanism is four member head and the tail articulated quadrilateral structures who forms in proper order, the both ends of pneumatic cylinder articulate a set of diagonal angle of quadrilateral structure respectively, another set of diagonal angle of quadrilateral structure articulates respectively has the backup pad, the backup pad is used for combining the wall guide slot to form the slip casting region, be connected with the at least three expanding mechanism of non-collinear setting between two parallel backup pads, the pneumatic cylinder is through the interval of flexible change two backup pads that correspond, lie in the asynchronous extension of pneumatic cylinder of co-altitude, at least one expanding structure is used for connecting outside equipment of lifting by crane through flexible cable.
2. The auxiliary construction device of the subway station guide wall as claimed in claim 1, wherein a formwork is attached to a side of said supporting plate away from said expansion structure for facing a side wall of the trench.
3. The auxiliary construction device for the guide wall of the subway station as claimed in claim 1, wherein the support plate is provided with a support frame, one side of the support frame is connected with the support plate, and the other side is hinged with the corner of the quadrilateral structure.
4. A subway station guide wall auxiliary construction device as claimed in claim 3, wherein said support frame comprises support rods, one end of each of said two support rods is connected to said expansion mechanism after being butted, the other end is connected to different positions of said support plate, and said two support rods form a triangular structure in combination with said support plate.
5. The auxiliary construction device for the guide wall of the subway station as claimed in claim 1, wherein said four rods corresponding to said expansion mechanism have the same axial length, and are sequentially hinged end to form a rhombic structure.
6. An auxiliary construction device for a guide wall of a subway station as claimed in claim 5, wherein said expansion mechanism set of diagonal connection support plates are located at the same height, and the axis of the hydraulic cylinder is kept vertical.
7. An auxiliary construction device for a subway station guide wall as claimed in claim 1, wherein the expansion mechanisms are distributed in two layers vertically, at least one expansion mechanism on each layer, the expansion mechanisms on the same layer are arranged at the same height, and the corresponding hydraulic cylinders extend synchronously.
8. An auxiliary construction device for a subway station guide wall as claimed in claim 7, wherein said flexible cable is connected to an expansion mechanism located at a relatively high position.
9. An auxiliary construction method of a subway station guide wall, which utilizes the auxiliary construction device of the subway station guide wall as claimed in any one of claims 1-8, characterized by comprising the following steps:
excavating a guide wall groove, and arranging a reinforcing mesh on the side wall of the groove body;
the flexible cable is connected with the expansion mechanism and hoisted, and the support plate is conveyed into the guide wall groove and is parallel to the side wall of the guide wall groove;
the hydraulic cylinder acts, the distance between the two support plates is adjusted until the distance meets a set value, the length of the hydraulic cylinder is maintained, and concrete is poured between the side wall of the guide wall groove and the support plates;
after the concrete is cured, extending the hydraulic cylinder to reduce the distance between the two supporting plates so as to separate from the concrete;
the whole body is taken out from the guide wall groove by the flexible cable hoisting expansion mechanism.
10. An auxiliary construction method for a subway station guide wall as defined in claim 9, wherein after the concrete curing is completed, the hydraulic cylinder is controlled to extend in sequence from top to bottom according to the position of the expansion mechanism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210444274.4A CN114541421B (en) | 2022-04-24 | 2022-04-24 | Subway station guide wall auxiliary construction device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210444274.4A CN114541421B (en) | 2022-04-24 | 2022-04-24 | Subway station guide wall auxiliary construction device and method |
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| CN114541421A true CN114541421A (en) | 2022-05-27 |
| CN114541421B CN114541421B (en) | 2022-08-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220275595A1 (en) * | 2019-07-12 | 2022-09-01 | Secure Ground Solutions Ltd | Trench shoring apparatus |
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| WO2010097642A1 (en) * | 2009-02-25 | 2010-09-02 | Loannis Lymberis | Hydraulic tie rod for construction projects |
| CN206859203U (en) * | 2017-01-20 | 2018-01-09 | 中国建筑第四工程局有限公司 | A kind of ground-connecting-wall grooving |
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| US20220275595A1 (en) * | 2019-07-12 | 2022-09-01 | Secure Ground Solutions Ltd | Trench shoring apparatus |
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| CN114541421B (en) | 2022-08-12 |
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