CN115262631A - Concrete pouring device and method for upright column construction by cover-excavation method - Google Patents
Concrete pouring device and method for upright column construction by cover-excavation method Download PDFInfo
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- CN115262631A CN115262631A CN202210928233.2A CN202210928233A CN115262631A CN 115262631 A CN115262631 A CN 115262631A CN 202210928233 A CN202210928233 A CN 202210928233A CN 115262631 A CN115262631 A CN 115262631A
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- concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
Abstract
The invention discloses a concrete pouring device and a pouring method for constructing an upright post by a cover-excavation method, wherein the concrete pouring device comprises an upright post template, a chute and a pouring opening; the upright column template is arranged between the cover plate and the bottom ground, and the transverse beam and the longitudinal beam at the connecting part of the cover plate and the upright column template are crossed; the chute is arranged on one side of the upper end of the upright post template and is communicated with the upright post template; the pouring opening is vertically arranged through the cover plate, the pouring opening is arranged above the chute and communicated with the chute, and a plurality of vibrating windows are arranged on the stand column template. The pouring openings and the chutes are arranged on the cover plate in a staggered mode at the crossed positions of the transverse beams and the longitudinal beams, so that concrete can be poured from the upper side of the cover plate, and the concrete of the stand column can be poured conveniently and quickly; and the mode that the plug-in vibrator and the attached vibrator are combined is adopted, so that the concrete pouring is guaranteed to be compact.
Description
Technical Field
The invention relates to the technical field of cover-and-excavation construction, in particular to a concrete pouring device and a pouring method for constructing a stand column by a cover-and-excavation method.
Background
The cover-excavation method is to excavate downwards from the ground to a certain depth, then seal the top, and construct the rest of the lower engineering under the sealed top cover. The main structure can be made in the same direction or in the opposite direction. When a subway station is built in a busy city, the subway station often occupies roads and affects traffic, and when the subway station is arranged on a main road and the traffic cannot be interrupted and a certain traffic flow requirement needs to be ensured, a cover excavation method is usually selected. In the construction of the cover-excavation method, the upright posts are generally arranged at the intersecting positions of the transverse beams and the longitudinal beams of the cover plate, the beams and the plate steel bars are arranged densely, pouring holes cannot be reserved directly at the beams and the plate steel bars, and the upright posts can only be arranged outside the upright post area, so that the upright posts can be ensured to be poured smoothly, and the top concrete and the cover plate are attached compactly, which is a great difficulty.
Therefore, it is necessary to develop a concrete pouring device and a pouring method for constructing the upright post by a cover-excavation method to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems and designs a concrete pouring device and a pouring method for constructing a stand column by a cover-excavation method.
The invention realizes the purpose through the following technical scheme:
cover method construction stand concrete placement device of digging includes:
a column template; the upright column template is arranged between the cover plate and the bottom ground, and the transverse beam and the longitudinal beam at the connecting part of the cover plate and the upright column template are crossed;
a chute; the chute is arranged on one side of the upper end of the upright post template and is communicated with the upright post template;
pouring a mouth; the pouring opening is vertically arranged through the cover plate, the pouring opening is arranged above the chute, and the pouring opening is communicated with the chute.
Preferably, a plurality of vibrating windows are arranged on the upright column template.
Furthermore, a plurality of vibration windows are arranged on the same side of the upright post template, the vibration windows are arranged along the same vertical direction, the adjacent vibration windows are arranged at intervals of 3-4m, the vibration window positioned at the lowermost part is 3m away from the ground at the bottom, and the vibration window positioned at the uppermost part is 0.5m away from the cover plate.
The pouring method for constructing the concrete pouring device of the upright post by the cover-excavation method comprises the following steps:
s1, pre-burying a PVC pipe with two ends plugged before pouring a concrete cover plate, wherein the pre-buried position of the PVC pipe deviates from the connecting position of a preset upright post template and the cover plate; after the cover plate is formed and concrete is poured, plugging at two ends of the PVC pipe is opened;
s2, binding reinforcing steel bars from bottom to top along the direction of a preset upright, erecting a frame body and an installation template, communicating the side part of an opening of the chute with the side wall of the upright template when the upright template is installed to the bottom of the cover plate, and hermetically connecting the top of the opening of the chute with the cover plate;
s3, placing concrete downwards from the pouring opening, and enabling the concrete to enter the upright column template after passing through the chute and reach the bottom;
s4, inserting a vibrating rod into the upright post template from the vibrating window, acting on concrete for vibrating, and plugging the vibrating window by using a plug after the concrete at the lower section of the vibrating window is vibrated; the vibrating rods extend into the concrete from different vibrating windows from bottom to top in sequence according to the pouring progress to vibrate the concrete until the pouring of the stand column is finished;
and S5, when the strength of the upright column concrete reaches a form removal condition, gradually removing the upright column template from the top downwards, removing the poured inclined structure, and finishing grinding and finishing the concrete surface as required.
Preferably, self-compacting concrete is poured within 0.5m below the bottom of the cover plate, and the template is manually knocked.
Preferably, common concrete is poured within 0.5m below the bottom of the cover plate, and attached vibrators are arranged on the periphery of the upright post template for vibrating.
Further, the vibration window size was 15cm × 15cm.
Preferably, the pre-buried position of the PVC pipe is 150mm away from the connecting position of the preset upright post template and the cover plate.
The invention has the beneficial effects that:
according to the method, the pouring openings and the chutes are arranged on the cover plate in a staggered mode at the intersecting positions of the transverse beams and the longitudinal beams, so that concrete can be poured from the upper side of the cover plate, and the concrete of the upright column can be poured conveniently and quickly; and the mode that the plug-in vibrator and the attached vibrator are combined is adopted, so that the concrete pouring is guaranteed to be compact.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
in the figure: 1-cover plate, 2-pouring opening, 3-chute, 4-upright template and 5-vibrating window.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, or orientations or positional relationships conventionally placed when the product of the present invention is used, or orientations or positional relationships conventionally understood by those skilled in the art, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The following describes in detail embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the concrete pouring device for the cover-excavation method construction of the upright column comprises:
a column template 4; the upright column template 4 is arranged between the cover plate 1 and the bottom ground, and the transverse beam and the longitudinal beam at the connecting part of the cover plate 1 and the upright column template 4 are intersected;
a chute 3; the chute 3 is arranged on one side of the upper end of the upright post template 4 and is communicated with the upright post template 4;
pouring openings 2; pouring opening 2 vertically runs through the setting of apron 1, and pouring opening 2 arranges the chute 3 top in, pours opening 2 and chute 3 intercommunication.
A plurality of vibrating windows 5 are arranged on the upright post template 4. The plurality of vibrating windows 5 are arranged on the same side of the upright post template 4, the plurality of vibrating windows 5 are distributed along the same vertical direction, the adjacent vibrating windows 5 are arranged at intervals of 3-4m, the vibrating window 5 positioned at the lowest part is arranged at an interval of 3m with the ground at the bottom, and the vibrating window 5 positioned at the uppermost part is arranged at an interval of 0.5m with the cover plate 1. The size of the vibrating window 5 is 15cm × 15cm.
The pouring method for the concrete pouring device for the cover-excavation construction of the upright column comprises the following steps:
s1, before the concrete cover plate 1 is poured, a DN150PVC pipe with two blocked ends is pre-buried, and the pre-buried position of the PVC pipe deviates from the connecting position of a preset upright post template 4 and the cover plate 1; after the cover plate 1 is formed and concrete is poured, plugging at two ends of the PVC pipe is opened; the PVC pipe seals both ends with tape to prevent the cover plate 1 from blocking the holes during concrete casting.
S2, binding reinforcing steel bars from bottom to top along the direction of a preset upright, erecting a frame body and an installation template, communicating the side part of an opening of the chute 3 with the side wall of the upright template 4 when the upright template 4 is installed to the bottom of the cover plate 1, and hermetically connecting the top of the opening of the chute 3 with the cover plate 1 to prevent slurry leakage;
s3, placing concrete downwards from the pouring opening 2, and enabling the concrete to enter the upright post formwork 4 after passing through the chute 3 and reach the bottom;
s4, inserting a vibrating rod into the upright post formwork 4 from the vibrating window 5, acting on concrete for vibrating, gradually lifting the vibrating rod along with the rising of the concrete, taking the vibrating rod out of the vibrating window 5 after the concrete at the lower section of the vibrating window 5 is vibrated (generally when the concrete is poured to the lower part of each vibrating window 5 by 30 cm), and plugging the vibrating window 5 by using a plugging block (generally, a wood formwork with the length of 35cm is nailed from the outside); the vibrating rods sequentially extend into the concrete from different vibrating windows 5 from bottom to top according to the pouring progress to vibrate the concrete until the pouring of the upright post is finished;
and S5, when the strength of the upright column concrete reaches the form removal condition, gradually removing the upright column template 4 from the top downwards, removing the poured inclined structure, and finishing grinding and finishing the concrete surface as required.
Preferably, the cover plate 1 is cast with self-compacting concrete within 0.5m below the bottom thereof and manually driven to strike the form.
As another optimization, common concrete is poured within 0.5m below the bottom of the cover plate 1, and attached vibrators are arranged around the column formworks 4 for vibrating.
As another preference, the concrete for pouring the upright post can be all self-compacting concrete.
In some embodiments, for columns with a minimum cross-sectional dimension of not more than 1m, instead of an insert vibrator, attached vibrators can be installed as required around the entire column formwork 4, in which case the vibrator window 5 can be omitted.
The pre-buried position of PVC pipe is for deviating from the preset stand template 4 and the 150mm department of the hookup location of apron 1.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (8)
1. Cover method construction stand concrete placement device that digs, its characterized in that includes:
a column template; the upright column template is arranged between the cover plate and the bottom ground, and the transverse beam and the longitudinal beam at the connecting part of the cover plate and the upright column template are crossed;
a chute; the chute is arranged on one side of the upper end of the upright post template and is communicated with the upright post template;
pouring a mouth; the pouring opening is vertically arranged through the cover plate, the pouring opening is arranged above the chute, and the pouring opening is communicated with the chute.
2. The concrete pouring apparatus for the construction of the vertical column by the cover excavation method as claimed in claim 1, wherein a plurality of vibrating windows are provided in the vertical column form.
3. The concrete pouring apparatus for the construction of the upright post by the cover excavation method as claimed in claim 2, wherein the plurality of vibrating windows are provided on the same side of the upright post formwork, the plurality of vibrating windows are arranged in the same vertical direction, the adjacent vibrating windows are spaced apart by 3 to 4m, the vibrating window located at the lowermost portion is spaced apart from the bottom floor by 3m, and the vibrating window located at the uppermost portion is spaced apart from the cover plate by 0.5m.
4. The pouring method for constructing the concrete pouring device of the upright post by the cover-excavation method is characterized by comprising the following steps of:
s1, pre-burying a PVC pipe with two ends plugged before pouring a concrete cover plate, wherein the pre-buried position of the PVC pipe deviates from the connecting position of a preset upright post template and the cover plate; after the cover plate is formed and concrete is poured, plugging at two ends of the PVC pipe is opened;
s2, binding reinforcing steel bars from bottom to top along the direction of a preset upright, erecting a frame body and an installation template, communicating the side part of an opening of the chute with the side wall of the upright template when the upright template is installed to the bottom of the cover plate, and hermetically connecting the top of the opening of the chute with the cover plate;
s3, placing concrete downwards from the pouring opening, and enabling the concrete to enter the upright column template after passing through the chute and reach the bottom;
s4, inserting a vibrating rod into the upright column template from the vibrating window, acting on concrete to vibrate, and plugging the vibrating window by using a plugging block after the concrete at the lower section of the vibrating window is vibrated; the vibrating rods sequentially extend into the concrete from different vibrating windows from bottom to top according to the pouring progress to vibrate the concrete until the pouring of the upright post is finished;
and S5, when the strength of the concrete of the stand column reaches a form removal condition, gradually removing the stand column template from the top downwards, removing the poured inclined structure, and finishing polishing and finishing the concrete surface as required.
5. A method as claimed in claim 4, wherein the self-compacting concrete is poured within 0.5m below the bottom of the cover and the formwork is manually beaten.
6. The method as claimed in claim 4, wherein the concrete is poured in a range of 0.5m below the bottom of the cover plate by using general concrete, and the concrete is vibrated by attaching vibrators around the pillar forms.
7. The method for pouring concrete placement for a cover-excavation-method-constructed column, as recited in claim 4, wherein the size of the vibrating window is 15cm x 15cm.
8. The method as claimed in claim 4, wherein the PVC pipe is embedded at a position 150mm away from the connection position of the pillar form and the cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210928233.2A CN115262631A (en) | 2022-08-03 | 2022-08-03 | Concrete pouring device and method for upright column construction by cover-excavation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210928233.2A CN115262631A (en) | 2022-08-03 | 2022-08-03 | Concrete pouring device and method for upright column construction by cover-excavation method |
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| CN115262631A true CN115262631A (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210928233.2A Pending CN115262631A (en) | 2022-08-03 | 2022-08-03 | Concrete pouring device and method for upright column construction by cover-excavation method |
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Citations (6)
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| JP2012117301A (en) * | 2010-12-01 | 2012-06-21 | Taisei Corp | Concrete placing installation and concrete placing method |
| CN102704507A (en) * | 2012-05-28 | 2012-10-03 | 中国建筑第八工程局有限公司 | Construction method of cover-and-cut reverse construction concrete walls and columns with vertical structures |
| CN103485366A (en) * | 2013-09-30 | 2014-01-01 | 中铁一局集团有限公司 | Safe stress conversion construction method for improvement on main structure of subway station |
| CN104929154A (en) * | 2015-06-24 | 2015-09-23 | 中铁上海工程局集团北方工程有限公司 | One-time pouring and forming construction technology for totally enclosed columns of cover and excavation top-down subway station |
| CN212078701U (en) * | 2019-11-06 | 2020-12-04 | 中交一公局集团有限公司 | Porous device of pouring of side wall |
| CN114197526A (en) * | 2021-12-28 | 2022-03-18 | 中铁建工集团有限公司 | Formwork system with vertical structure by reverse construction method and construction method |
-
2022
- 2022-08-03 CN CN202210928233.2A patent/CN115262631A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117301A (en) * | 2010-12-01 | 2012-06-21 | Taisei Corp | Concrete placing installation and concrete placing method |
| CN102704507A (en) * | 2012-05-28 | 2012-10-03 | 中国建筑第八工程局有限公司 | Construction method of cover-and-cut reverse construction concrete walls and columns with vertical structures |
| CN103485366A (en) * | 2013-09-30 | 2014-01-01 | 中铁一局集团有限公司 | Safe stress conversion construction method for improvement on main structure of subway station |
| CN104929154A (en) * | 2015-06-24 | 2015-09-23 | 中铁上海工程局集团北方工程有限公司 | One-time pouring and forming construction technology for totally enclosed columns of cover and excavation top-down subway station |
| CN212078701U (en) * | 2019-11-06 | 2020-12-04 | 中交一公局集团有限公司 | Porous device of pouring of side wall |
| CN114197526A (en) * | 2021-12-28 | 2022-03-18 | 中铁建工集团有限公司 | Formwork system with vertical structure by reverse construction method and construction method |
Non-Patent Citations (1)
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| 方启超;邵孟新;: "地下建筑逆作法施工重点技术探讨与工程实践" * |
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