CN211370395U - Preliminary supporting structure of vertical shaft - Google Patents

Abstract

The utility model provides a shaft primary support structure, which comprises a circumferential steel frame; a plurality of circumferential steel frames are connected end to form a closed ring; the circumference steelframe is connected through supporting the stock with the shaft wall of a well between, and it has a plurality ofly to support the stock, and a plurality of support stocks set up at the interval on the closed ring, and every supports the stock and all includes first stock and second stock, and first stock is laminated in the closed ring top surface and is extended into the wall of a well, and the second stock is laminated in the closed ring bottom surface and is extended into the wall of a well, and first stock is connected with the second stock to enclose the closed ring after the holding on the wall of a well. When the shaft wall steel frame of the vertical shaft is constructed, the support anchor rods surround and support the steel frame to replace temporary steel supports, the support anchor rods are used as closed ring supporting points, the stress of the steel frame is more favorably realized, meanwhile, the temporary steel supports are cancelled, the shaft excavation working surface can be increased, the construction organization is convenient, the construction efficiency is improved, and the engineering investment is saved.

Description

Preliminary supporting structure of vertical shaft

Technical Field

The utility model relates to an underground works construction field, concretely relates to shaft is structure just propped up.

Background

With the continuous development of subway construction, especially in underground excavation station construction, construction vertical shafts and station or interval ventilation vertical shafts are increasingly applied. In the existing vertical shaft adopted in subway construction, a large amount of temporary steel supports must be erected to stabilize the initial support shaft wall of the vertical shaft under the condition of large section or deep foundation pit, the construction process is too complicated, and the construction efficiency is low; the temporary supporting structure is not beneficial to the excavation of a vertical shaft, and the instability of steel supports can be caused by large-scale excavation equipment or blasting construction; in addition, the excessive temporary steel supports can increase the engineering investment, and the temporary steel supports need to be dismantled in the later period, so that waste is caused.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a pair of shaft is structure just, has solved traditional shaft construction, needs to set up a large amount of interim steel shotcrete, is unfavorable for the shaft excavation, and too much interim steel shotcrete can increase the engineering investment simultaneously, reduces the technical problem of construction work efficiency.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a primary support structure of a vertical shaft comprises a circumferential steel frame; the plurality of circumferential steel frames are connected end to form a closed ring for supporting the vertical shaft; the circumference steelframe is connected through supporting the stock with the shaft wall of a well between, it has a plurality ofly, and is a plurality of to support the stock and set up at the interval on the closed ring, every it all includes first stock and second stock to support the stock, first stock is laminated in closed ring top surface and is extended into in the wall of a well, the second stock is laminated in closed ring bottom surface and is extended into in the wall of a well, first stock is kept somewhere in the shaft in one end and the second stock is kept somewhere in the shaft in one end and is connected, with will the closed ring encloses the back fixing on the wall of a well.

Optionally, the first anchor rod is connected with the second anchor rod through a fixing and locking mechanism, the fixing and locking mechanism comprises a U-shaped member, the U-shaped member is attached to one side, facing the center of the vertical shaft, of the closed ring, and two ends of the U-shaped member are connected with the first anchor rod and the second anchor rod respectively.

Optionally, the U-shaped member is connected with the first anchor rod through a first cantilever, the first cantilever is fixedly arranged on the U-shaped member, a first through hole is formed in the first cantilever, and the first anchor rod extends into the well wall after penetrating through the first through hole.

Optionally, the U-shaped member is connected with the second anchor rod through a second cantilever, the second cantilever is fixedly arranged on the U-shaped member, a second through hole is formed in the second cantilever, and the second anchor rod extends into the borehole wall after penetrating through the second through hole.

Optionally, the locking mechanism further comprises a connecting rod, one end of the connecting rod is connected with the first cantilever, and the other end of the connecting rod is connected with the second cantilever.

Optionally, a first mounting hole is formed in one side, facing the second cantilever, of the first cantilever, a second mounting hole is formed in the second cantilever, and the second mounting hole and the first mounting hole are coaxially arranged, so that the connecting rod can be mounted conveniently.

Optionally, the first anchor is disposed obliquely to the second anchor, and the second anchor is disposed horizontally.

According to the above technical scheme, the beneficial effects of the utility model are that:

the utility model provides a shaft primary support structure, which comprises a circumferential steel frame; the plurality of circumferential steel frames are connected end to form a closed ring for supporting the vertical shaft; the circumference steelframe is connected through supporting the stock with the shaft wall of a well between, it has a plurality ofly, and is a plurality of to support the stock and set up at the interval on the closed ring, every it all includes first stock and second stock to support the stock, first stock is laminated in closed ring top surface and is extended into in the wall of a well, the second stock is laminated in closed ring bottom surface and is extended into in the wall of a well, first stock is kept somewhere in the shaft in one end and the second stock is kept somewhere in the shaft in one end and is connected, with will the closed ring encloses the back fixing on the wall of a well. When the shaft wall steel frame of the vertical shaft is constructed, the support anchor rods surround and support the steel frame to replace temporary steel supports, the support anchor rods are used as closed ring supporting points, the stress of the steel frame is more favorably realized, meanwhile, the temporary steel supports are cancelled, the shaft excavation working surface can be increased, the construction organization is convenient, the construction efficiency is improved, and the engineering investment is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a primary support structure of a vertical shaft;

fig. 2 is a schematic view of the arrangement of the support bolt;

FIG. 3 is a schematic view of another embodiment of a support bolt arrangement;

FIG. 4 is a schematic view of another embodiment of a support bolt arrangement;

FIG. 5 is a schematic structural view of the locking mechanism;

reference numerals:

1-circumferential steel frame, 2-support anchor rod and 3-locking mechanism;

21-a first anchor rod, 22-a second anchor rod, 31-a U-shaped component, 32-a first cantilever, 33-a second cantilever and 34-a connecting rod;

321-first through hole, 322-first mounting hole, 331-second through hole, 332-second mounting hole.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

In the description of the present application, it is to be understood that the terms "top surface", "bottom surface", "up and down", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1-2, the utility model provides a shaft primary support structure, including circumference steelframe 1, a plurality of circumference steelframe 1 end to end forms the closed loop for supporting the shaft, specifically, sets up a plurality of closed loops at shaft excavation direction interval, connects with the steelframe and/or the reinforcing bar of vertical setting between two adjacent closed loops, so as to form a complete shaft and strut the system. The circumferential steel frame can be a profile steel frame or a grid steel frame. Be connected through supporting stock 2 between circumference steelframe 1 and the shaft wall of a well, it has a plurality ofly, and is a plurality of to support stock 2 interval setting in order to form the multiple spot holding on the closed ring, every it all includes first stock 21 and second stock 22 to support stock 2, first stock 21 is laminated in the closed ring top surface and is extended into in the wall of a well, second stock 22 is laminated in the closed ring bottom surface and is extended into in the wall of a well, first stock 21 is kept somewhere in one end in the shaft and is kept somewhere one end in the shaft with second stock 22 and be connected, with will the closed ring encloses the back holding on the wall of a well, is about to tie up to the wall of a well through two stocks to the closed ring. In particular, the support anchor structure adopted by the application is suitable for rectangular shafts, oval shafts and other shaped shafts. When the shaft wall steel frame of the vertical shaft is constructed, the support anchor rods surround and support the steel frame to replace temporary steel supports, the support anchor rods are used as closed ring supporting points, the steel frame is more favorably stressed, meanwhile, the temporary steel supports are cancelled, the excavation working surface of the vertical shaft can be increased, the construction organization is convenient, the construction efficiency is improved, and the engineering investment is saved.

In one embodiment, referring to fig. 2, the circumferential steel frame 1 is an i-steel, the first anchor rod 21 and the second anchor rod 22 are driven into the well wall along the edge of the i-steel wing plate, then the first anchor rod 21 and the second anchor rod 22 are bent at least once, the first anchor rod 21, the second anchor rod 22 and the i-steel are welded into a whole towards one side of the shaft center of the shaft, and meanwhile, the contact positions of the anchor rods and the i-steel wing plate are welded to increase the structural strength, so that the two anchor rods are attached to the outer side of the i-steel. Obviously, the circumferential steel frame 1 may also be a steel grating. The tail ends of the two anchor rods are bent to form a binding effect on the I-shaped steel, and the anchor rods extending into the well wall part provide a fixing force.

As a further improvement to the above solution, please refer to fig. 3-4, the first anchor rod 21 and the second anchor rod 22 are connected by a locking mechanism 3, the locking mechanism 3 includes a U-shaped member 31, the U-shaped member 31 is attached to one side of the closed ring facing the center of the shaft, and two ends of the U-shaped member 31 are respectively connected with the first anchor rod 21 and the second anchor rod 22. Through prefabricated U type component to be connected U type component both ends and stock, then no longer need buckle the stock, alleviateed the construction degree of difficulty and engineering time by a wide margin, and adopted standardized product installation still effectively to guarantee construction quality. Specifically, the U-shaped member 31 is connected with the first anchor rod 21 through a first cantilever 32, the first cantilever 32 is fixedly arranged on the U-shaped member 31, a first through hole 321 is formed in the first cantilever 32, and the first anchor rod 21 extends into the well wall after penetrating through the first through hole 321. The U-shaped member 31 is connected with the second anchor rod 22 through a second cantilever 33, the second cantilever 33 is fixedly arranged on the U-shaped member 31, a second through hole 331 is formed in the second cantilever 33, and the second anchor rod 22 extends into the well wall after penetrating through the second through hole 331. When the anchor rod is driven into the well wall to a proper position, the anchor rod and the cantilever are locked through the nut, the circumferential steel frame is pulled to the well wall through the U-shaped component, and the circumferential steel frame obtains stable holding force due to the supporting effect of the anchor rod.

As a further improvement to the above scheme, the locking mechanism 3 further includes a connecting rod 34, one end of the connecting rod 34 is connected to the first suspension arm 32, the other end of the connecting rod 34 is connected to the second suspension arm 33, and the connecting rod 34 seals the whole locking mechanism into a ring, so that the structural strength of the locking mechanism is increased. In one embodiment, a first mounting hole 322 is formed on a side of the first suspension arm 32 facing the second suspension arm 33, the first mounting hole 322 is preferably a threaded hole, a second mounting hole 332 is formed on the second suspension arm 33, the second mounting hole 332 is preferably a through hole, the second mounting hole 332 is coaxially arranged with the first mounting hole 322 to facilitate mounting of the connecting rod 34, and the connecting rod 34 is preferably a threaded rod. The screw rod is first inserted through the second mounting hole 332 and threaded into the first mounting hole 322, and then tightened under the second arm 33 with a nut.

As a further improvement to the above, the first anchor rod 21 is disposed obliquely toward the second anchor rod 22, and the second anchor rod 22 is disposed horizontally. Preferably, referring to fig. 5, an inclined surface is arranged on one side of the first cantilever 32 facing the shaft center of the shaft, the first through hole 321 is perpendicular to the inclined surface, and then the first anchor rod is driven into the shaft wall along the arrangement direction of the first through hole, and the inclined surface is also convenient for the arrangement of the anchor rod nut subsequently. First stock 21 imbeds the wall of a well from last down aslope promptly, and second stock 22 level imbeds the wall of a well, and the slope sets up the stock and has formed better effect of tying up to the steelframe, has further retrained the activity space of steelframe, specifically is the radial degree of freedom of restriction steelframe. Obviously, also can adopt first stock 21 level embedding wall of a well, second stock 22 sets up support stock 2 from the mode of up embedding wall of a well of following the slope, can also adopt the mode of first stock 21 and the equal embedding wall of a well of second stock 22 of slope to set up support stock 2, and the activity space of the restraint steelframe that the homoenergetic is better, it is great only to set up the stock construction degree of difficulty from up following.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (7)

1. The utility model provides a shaft is supporting structure just which characterized in that: comprises a circumferential steel frame (1); the plurality of circumferential steel frames (1) are connected end to form a closed ring for supporting a vertical shaft; be connected through supporting stock (2) between circumference steelframe (1) and the shaft wall of a well, it has a plurality ofly, a plurality of to support stock (2) interval setting on the closed ring, every support stock (2) all include first stock (21) and second stock (22), first stock (21) are laminated in the closed ring top surface and are extended into in the wall of a well, second stock (22) are laminated in the closed ring bottom surface and extend into in the wall of a well, first stock (21) are kept somewhere in one end in the shaft and are kept somewhere with second stock (22) in one end in the shaft and be connected, with will the closed ring closes the back holding on the wall of a well.

2. A shaft primary support structure according to claim 1, characterized in that: first stock (21) are connected through solid locking mechanism (3) with second stock (22), solid locking mechanism (3) include U type component (31), U type component (31) are laminated in closed ring towards shaft center one side, U type component (31) both ends are connected with first stock (21) and second stock (22) respectively.

3. A shaft primary support structure according to claim 2, characterized in that: u type component (31) are connected with first stock (21) through first cantilever (32), first cantilever (32) set firmly on U type component (31), just be equipped with first through-hole (321) on first cantilever (32), first stock (21) extend into the wall of a well after passing first through-hole (321).

4. A shaft primary support structure according to claim 3, characterized in that: u type component (31) are connected with second stock (22) through second cantilever (33), second cantilever (33) set firmly on U type component (31), just be equipped with second through-hole (331) on second cantilever (33), second stock (22) pass second through-hole (331) after extend into the wall of a well.

5. A shaft primary support structure according to claim 4, characterized in that: the locking mechanism (3) further comprises a connecting rod (34), one end of the connecting rod (34) is connected with the first cantilever (32), and the other end of the connecting rod (34) is connected with the second cantilever (33).

6. A shaft primary support structure according to claim 5, characterized in that: first cantilever (32) are equipped with first mounting hole (322) towards second cantilever (33) one side, be equipped with second mounting hole (332) on second cantilever (33), second mounting hole (332) and the coaxial setting of first mounting hole (322), so that the installation of connecting rod (34).

7. A shaft primary support structure according to any one of claims 1 to 6, characterized in that: the first anchor rod (21) is obliquely arranged towards the second anchor rod (22), and the second anchor rod (22) is horizontally arranged.

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