CN217759798U - Non-dismantling steel inner mold of reinforced concrete ventilation shaft - Google Patents
Non-dismantling steel inner mold of reinforced concrete ventilation shaft Download PDFInfo
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- CN217759798U CN217759798U CN202220853498.6U CN202220853498U CN217759798U CN 217759798 U CN217759798 U CN 217759798U CN 202220853498 U CN202220853498 U CN 202220853498U CN 217759798 U CN217759798 U CN 217759798U
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Abstract
The utility model discloses a reinforced concrete ventilation shaft exempt from to tear open steel centre form, including exempting from to tear open steel form system, exempting from to tear open braced system and simply can have enough to meet the need and use safety protection apron system three, exempt from to tear open braced system and include vertical angle steel, horizontal angle steel and lug, simply can have enough to meet the need and include supporting steel plate, supporting angle steel, pivot mechanism, carry and draw rings and soft rope with safety protection apron system. The utility model discloses a processing, preparation are all prefabricated in the workshop and are accomplished, prefabricated component simple structure, convenience, and preparation cycle is short, and the quality is controllable, can overcome because of the difficult installation of template, difficult demolising, the difficult problem of guaranteeing construction safety in the narrow and small traditional construction method that leads to of ventilation shaft headroom cross-sectional dimension.
Description
Technical Field
The utility model belongs to ventilation shaft construction field, concretely relates to reinforced concrete ventilation shaft exempt from to tear open steel centre form.
Background
At present, in the construction process of a nuclear power station, in order to ensure the ventilation quantity and the ventilation safety of an industrial factory building, a plurality of well type ventilation rooms are designed in various sub items of a nuclear power main factory building, the rooms are generally high in height and small in internal section size, when a traditional wood formwork is used, the rooms need to spend a long time, the rooms are difficult to disassemble after construction is completed, and high safety risks exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to not enough among the prior art, provide a reinforced concrete ventilation shaft exempt from to tear open steel centre form, when satisfying ventilation shaft structural design requirement, avoid the template after the construction completion to demolish the process.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a disassembly-free steel inner mold of a reinforced concrete ventilation shaft comprises a square steel template formed by welding a plurality of steel plates in a surrounding mode, wherein the length and the width of the square steel template are matched with the size of the ventilation shaft;
a plurality of vertical angle steels are welded on the outer sides of the square steel templates, a plurality of round holes are formed in the vertical angle steels, and the vertical angle steels are fixedly connected with the outer die through steel bars matched with the round holes so as to form a stable space between the inner die and the outer die for pouring concrete;
the inner side wall of the square steel template is welded with a plurality of horizontal angle steels to form a supporting platform for placing a safety protection cover plate; the safety protection cover plate is an independent prefabricated part and can be repeatedly used;
the inner side wall of the upper end of the square steel template is welded with a plurality of lifting lugs, and the tops of the lifting lugs protrude out of the square steel template and are used for hoisting or moving the square steel template;
in order to meet the pouring height of the ventilation shaft, the bottom pouring of the ventilation shaft is completed by utilizing the disassembly-free steel inner mold, and then the disassembly-free steel inner mold is spliced layer by layer on the disassembly-free steel inner mold to complete the layer by layer pouring of the ventilation shaft until the preset pouring height is reached; when the disassembly-free steel internal mold is spliced, the lug protruding part of the lower disassembly-free steel internal mold is spliced with the bottom of the upper disassembly-free steel internal mold so as to fix the relative position of the upper and lower disassembly-free steel internal molds.
Further, the safety protection cover plate comprises two support steel plates which are connected together through a shaft pin mechanism; the bottom of the supporting steel plate is welded with a plurality of supporting angle steels for enabling the supporting steel plate to have enough shearing resistance;
lifting rings are arranged at the upper part and the bottom part of each supporting steel plate at positions close to the shaft pin mechanism, soft ropes are connected between the corresponding rings of the two supporting steel plates, and the soft ropes at the upper parts of the supporting steel plates are used for lifting and moving the safety protection cover plate; in the process of hoisting and moving, the safety protection cover plate is folded downwards under the action of gravity and the pin mechanism, when the safety protection cover plate is placed on the horizontal angle steel on the inner side of the square steel template, due to the supporting action of the horizontal angle steel, the two supporting steel plates are mutually opened and finally positioned on the same plane, and the soft rope positioned at the lower part of the supporting steel plate is in a tightening state at the moment.
Furthermore, the lower end of the vertical angle steel protrudes out of the square steel template, and a certain distance is kept between the upper end of the vertical angle steel and the upper end edge of the square steel template, so that the relative position of the upper and lower disassembly-free steel internal molds is further limited when the disassembly-free steel internal molds are spliced.
Further, supporting platform includes upper and lower two-layer, all is used for placing the safety protection apron.
Furthermore, the lower end of the vertical angle steel protrudes 5-10cm from the square steel template, and the distance between the corresponding upper end of the vertical angle steel and the upper end edge of the square steel template is 5-10 cm.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses completion that can be fine between the upper and lower floor's steel centre form is connected from the coincidence, and structural strength, rigidity are big, and concrete construction load is born to can be fine, guarantees concrete construction quality. And the processing and the manufacture of the disassembly-free steel inner die system are all prefabricated and finished in a workshop, and the prefabricated part has the advantages of simple and convenient structure, short manufacturing period and controllable quality. The problems that in a traditional construction method, due to the fact that the size of the clearance section of the ventilation shaft is small, the template and the support of the template are difficult to install and dismantle, and construction safety is not easy to guarantee can be solved.
Drawings
FIG. 1 is a schematic structural diagram of a square steel form;
FIG. 2 is a schematic view of a safety cover plate;
FIG. 3 is a schematic view of the pivot pin mechanism;
fig. 4 is a cross-sectional view of the ventilation shaft after casting;
FIG. 5 is a schematic diagram of the steel inner die after splicing without dismantling;
the lifting device comprises a square steel template 1, a vertical angle steel 2, a horizontal angle steel 3, a lifting lug 4, a supporting steel plate 5, a supporting angle steel 6, a shaft pin mechanism 7, a lifting ring 8 and a soft rope 9.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-3, the utility model provides a pair of exempt from to tear open steel centre form of reinforced concrete ventilation shaft mainly includes exempt from to tear open steel form system (square steel form 1), exempt from to tear open braced system (lug braced system) and simply can have enough to meet the need with safety protection apron system three. The disassembly-free support system comprises vertical angle steel 2, horizontal angle steel 3 and lifting lugs 4; the simple and easy safe protective cover plate system for turnover comprises a supporting steel plate 5, a supporting angle steel 6, a shaft pin mechanism 7, a lifting and hanging ring 8 and a soft rope 9.
In order to meet the pouring height of the ventilation shaft, the bottom pouring of the ventilation shaft is completed by using the disassembly-free steel inner mold, as shown in fig. 4, and then the disassembly-free steel inner mold is spliced on the disassembly-free steel inner mold layer by layer to complete the layer-by-layer pouring of the ventilation shaft until the preset pouring height is reached, as shown in fig. 5; when the disassembly-free steel internal mold is spliced, the lug protruding part of the lower disassembly-free steel internal mold is spliced with the bottom of the upper disassembly-free steel internal mold so as to fix the relative position of the upper and lower disassembly-free steel internal molds.
Preferably, round holes need to be formed in the vertical angle steels 2 so as to be fixedly connected with the outer side template. The lower part of the vertical angle steel protrudes 5-10cm from the steel internal mold, and the corresponding upper part of the vertical angle steel is 5-10cm away from the top of the steel internal mold, so that the integral stress of the steel internal mold is facilitated.
As preferred, two-layer about horizontal angle steel 3 sets up, when playing the horizontal support, still can regard as the platform of placing the safety protection apron that can have enough to meet the need, is favorable to improving the security of construction.
Preferably, lifting rings 8 are arranged at the upper part and the bottom part of each supporting steel plate 5 at positions close to the shaft pin mechanisms 7, soft ropes are connected between the corresponding rings of the two supporting steel plates 5, and the soft ropes at the upper parts of the supporting steel plates 5 are used for lifting and moving the safety protection cover plate; in-process that the hoist and mount removed, the safety protection plate is under gravity and pivot mechanism 7's effect, and its two supporting steel plates are folding downwards, and when placing the safety protection plate on the inboard horizontal angle steel of square steel template, because the supporting role of horizontal angle steel, two supporting steel plates are opened each other and finally are located the coplanar, and the soft rope that is located the supporting steel plate lower part this moment is in the state of tightening.
Utilize the utility model discloses when carrying out ventilation shaft and pouring the construction, mainly include following several steps:
firstly, designing a non-dismantling steel inner die and manufacturing a workshop;
and calculating the thickness of a steel plate and the spacing requirement of the support angle steel used by the disassembly-free steel inner mould system according to the value of the side pressure of the wall concrete. According to relevant specifications, for concrete wall construction, for a general 3-5m standard layer, the main influences on the lateral pressure of a wall formwork are the concrete density, the initial setting time of the concrete, the use of an additive, the concrete slump, the pouring speed and the like, so that the design form of a non-dismantling steel inner formwork system used by the construction method is determined under the condition that the influence factors are determined. Therefore, when the method is implemented on site, the design rule of the steel inner die is universal. The system related to the construction method is processed and manufactured in a workshop, and the manufacturing quality can be guaranteed.
Secondly, after the binding of the reinforced wall is finished, hoisting the steel inner mould without dismantling;
after the reinforcement of the wall body is finished, the steel inner die is integrally hoisted without dismantling, the modularized construction is realized, the site installation is convenient and quick, the important contribution is made to the construction period, the net section size of the ventilation shaft structure is generally very small, the access of constructors is very inconvenient, and the construction risk is increased along with the change of the construction height. The construction method is implemented on site, and the problem is better solved.
Thirdly, installing and reinforcing the steel inner die without dismantling;
after the hoisting is completed, the vertical angle steel is reinforced by the aid of the holes in the vertical angle steel, and convenience and rapidness are realized.
Fourthly, the safety protection cover plate can be used for turnover hoisting;
exempt from to tear open centre form and tentatively consolidate the completion after, will have enough to meet the need and hoist with safety protection cover plate, because of this apron is folding form, consequently only need slowly place horizontal angle steel top with it when hoist and mount, make it slowly expand can, do not need the special messenger to take one's place the operation at the installation position. After the upper-layer disassembly-free inner mold is hoisted in place, the hook is used for hooking the upper soft rope, the cover plate can be hoisted out by lightly hoisting, and then the cover plate is immediately installed on the upper-layer horizontal angle steel platform.
Fifthly, erecting a template and pouring concrete;
inside, the outside template of whole shaft is erected, is consolidated and is accomplished, and main notice concrete placement top elevation is the top of vertical angle steel during concrete placement, surely note the top that can not pour to the steel centre form, because the exempt from to tear open steel membrane vertical bracing angle steel on upper portion and this position have the overlap joint, this is more reasonable in atress and hoist and mount.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
It should be noted that, in the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", etc. are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship between the terms may be changed or adjusted without substantial technical changes.
Claims (5)
1. The disassembly-free steel internal mold of the reinforced concrete ventilation shaft is characterized by comprising a square steel template (1) formed by welding a plurality of steel plates in a surrounding manner, wherein the length and the width of the square steel template are matched with the size of the ventilation shaft;
a plurality of vertical angle steels (2) are welded on the outer sides of the square steel templates (1), a plurality of round holes are formed in the vertical angle steels (2), and the vertical angle steels (2) are fixedly connected with the outer die through steel bars matched with the round holes so as to form a stable space between the inner die and the outer die for pouring concrete;
the inner side wall of the square steel template (1) is welded with a plurality of horizontal angle steels (3) to form a supporting platform for placing a safety protection cover plate; the safety protection cover plate is an independent prefabricated part and can be repeatedly used;
the inner side wall of the upper end of the square steel template (1) is welded with a plurality of lifting lugs (4), and the tops of the lifting lugs (4) protrude out of the square steel template and are used for hoisting or moving the square steel template;
in order to meet the pouring height of the ventilation shaft, the bottom pouring of the ventilation shaft is completed by utilizing the disassembly-free steel inner mold, and then the disassembly-free steel inner mold is spliced layer by layer on the disassembly-free steel inner mold to complete the layer by layer pouring of the ventilation shaft until the preset pouring height is reached; when the disassembly-free steel internal mold is spliced, the lug protruding part of the lower disassembly-free steel internal mold is spliced with the bottom of the upper disassembly-free steel internal mold so as to fix the relative position of the upper and lower disassembly-free steel internal molds.
2. A disassembly-free internal mold of a reinforced concrete ventilation shaft as claimed in claim 1, wherein said safety shield cover plate comprises two support steel plates (5) joined together by a pin mechanism (7); the bottom of the supporting steel plate (5) is welded with a plurality of supporting angle steels (6) for enabling the supporting steel plate (5) to have enough shearing resistance;
lifting rings (8) are arranged at the upper part and the bottom of the supporting steel plate (5) at positions close to the shaft pin mechanism (7), soft ropes are connected between the corresponding rings of the two supporting steel plates (5), and the soft ropes at the upper part of the supporting steel plates (5) are used for lifting and moving the safety protection cover plate; in the process of hoisting and moving, the safety protection cover plate is folded downwards under the action of gravity and a pin mechanism (7), when the safety protection cover plate is placed on the horizontal angle steel on the inner side of the square steel template, the two support steel plates are mutually opened and finally positioned on the same plane due to the supporting action of the horizontal angle steel, and the soft rope positioned on the lower part of the support steel plate is in a tightening state at the moment.
3. The disassembly-free steel inner mold of the reinforced concrete ventilation shaft is characterized in that the lower end of the vertical angle steel (2) protrudes out of the square steel template (1), and the upper end of the vertical angle steel (2) keeps a certain distance from the upper end edge of the square steel template (1) so as to further limit the relative position of the upper and lower disassembly-free steel inner molds when the disassembly-free steel inner molds are spliced.
4. The disassembly-free steel inner mold of the reinforced concrete ventilation shaft of claim 1, wherein the supporting platform comprises an upper layer and a lower layer which are used for placing the safety protection cover plate.
5. The disassembly-free steel internal mold of the reinforced concrete ventilation shaft of claim 3, wherein the lower end of the vertical angle steel protrudes 5-10cm from the square steel template, and the corresponding upper end of the vertical angle steel is 5-10cm away from the upper end edge of the square steel template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220853498.6U CN217759798U (en) | 2022-04-14 | 2022-04-14 | Non-dismantling steel inner mold of reinforced concrete ventilation shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220853498.6U CN217759798U (en) | 2022-04-14 | 2022-04-14 | Non-dismantling steel inner mold of reinforced concrete ventilation shaft |
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| Publication Number | Publication Date |
|---|---|
| CN217759798U true CN217759798U (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220853498.6U Active CN217759798U (en) | 2022-04-14 | 2022-04-14 | Non-dismantling steel inner mold of reinforced concrete ventilation shaft |
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| Country | Link |
|---|---|
| CN (1) | CN217759798U (en) |
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- 2022-04-14 CN CN202220853498.6U patent/CN217759798U/en active Active
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