CN107100363B - Bare concrete open joint strip template of elevator test tower and open joint construction method - Google Patents
Bare concrete open joint strip template of elevator test tower and open joint construction method Download PDFInfo
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- CN107100363B CN107100363B CN201710483032.5A CN201710483032A CN107100363B CN 107100363 B CN107100363 B CN 107100363B CN 201710483032 A CN201710483032 A CN 201710483032A CN 107100363 B CN107100363 B CN 107100363B
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- strip
- open seam
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- seam strip
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Abstract
The invention discloses a bare concrete open joint strip template of an elevator test tower and an open joint construction method, wherein the bare concrete open joint strip template comprises a template body and is characterized in that: the upper open seam strip is fixedly connected to the upper portion of the formwork body, the lower open seam strip is fixedly connected to the lower portion of the formwork body, the distance between the upper open seam strip and the lower open seam strip is the same as the distance between open seams to be constructed, the shape and the size of the cross section of the lower open seam strip are matched with the open seams to be constructed, and the cross section of the upper open seam strip is larger than the cross section of the lower open seam strip. During construction, after the template is moved upwards to the next construction station by adopting the hydraulic creeping formwork system, the lower open joint strip is aligned to the position of the embedded upper open joint, and concrete naturally flows downwards in the pouring process to fill the gap between the lower open joint strip and the upper open joint, so that the quality of open joint construction is ensured.
Description
Technical Field
The invention relates to a template for building construction, in particular to a visible seam strip template for fair-faced concrete and a method for performing visible seam construction by adopting the template.
Background
The fair-faced concrete is a concrete wall surface which directly utilizes the natural texture of the formed concrete as the facing effect. When the bare concrete is used for a large-height building, such as an elevator test tower, the test tower has a barrel bundle structure, the building is high (for example, the height of the elevator test tower proposed by the applicant reaches 268 meters), a hydraulic creeping formwork system is required for construction, and the whole outer vertical surface reaches the level of finish bare concrete, which means that the construction of the bare concrete must be directly carried out by directly utilizing a large formwork system on the hydraulic creeping formwork system.
During construction, construction joints are required to be reserved according to the floor height of a building, the positions of the construction joints are determined according to design requirements and a construction technical scheme before concrete pouring and are coordinated with the arrangement of the open joints, and the planes of the construction joints are perpendicular to the axis of the structure. For the convenience of construction treatment, the open seams are simultaneously used as construction dividing seams. For example, when the method is used for construction of an elevator test tower, the height of a project layer is mostly 5m and 10m, and a designed template system is poured for 5m each time, so that the open joint distance can be set to be 5 m.
However, when the hydraulic creeping formwork system is constructed by the method, how to make the spacing of the open seams consistent and ensure the construction quality is a problem to be solved. The conventional concept is that a visible seam strip is respectively fixed on the upper part and the lower part of a template, the distance between the visible seam strips is the same as the distance between the exposed seams for construction, and after concrete pouring is finished, the template is withdrawn and ascends, so that the lower visible seam strip is embedded in the original upper visible seam. However, the method has problems in actual construction, and after the formwork climbs, the lower open joint strip and the corresponding upper open joint strip are difficult to fit with each other and cannot be completely embedded, so that quality problems of the open joint are caused due to the influence of concrete flow during subsequent construction, and even the lower poured clear water wall surface is polluted.
Therefore, there is a need for an improved method for open seam construction of fair-faced concrete to solve the above problems.
Disclosure of Invention
The invention aims to provide a bare concrete open joint construction method for an elevator test tower, which is used for ensuring the open joint construction quality when a hydraulic creeping formwork system is adopted for construction. The invention also aims to provide the open joint strip template for realizing open joint construction.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: the bare concrete open joint strip template for the elevator test tower comprises a template body, wherein an upper open joint strip is fixedly connected to the upper portion of the template body, a lower open joint strip is fixedly connected to the lower portion of the template body, the distance between the upper open joint strip and the lower open joint strip is the same as the distance between open joints to be constructed, the shape and the size of the cross section of the lower open joint strip are matched with the shape and the size of the open joints to be constructed, and the cross section of the upper open joint strip is larger than the cross section of the lower open joint strip.
According to the technical scheme, the cross section of the upper open seam strip can be coated with the cross section of the lower open seam strip, so that the upper open seam formed after pouring is large, and the lower open seam strip can be conveniently embedded into the upper open seam after climbing a formwork. Because the elevator test tower is of a barrel bundle structure, the template body is annular, and the upper open seam strip and the lower open seam strip are respectively looped in the horizontal direction.
According to the preferred technical scheme, the lower open seam strip is a plastic strip with a trapezoidal cross section, the lower bottom of the trapezoid is connected with the template body, and the length of the upper bottom of the trapezoid is smaller than that of the lower bottom; the upper open seam strip is a wood strip with a rectangular cross section, the side length of the rectangular connecting template body is larger than the length of the lower bottom of the trapezoid, and the other side length of the rectangle is larger than the height of the trapezoid.
In the technical scheme, the upper open seam strip and the lower open seam strip are fixedly connected with the template through screws by adopting front-side drilling, and the top surfaces of drilled holes are filled with putty and are flush with the periphery.
According to a further technical scheme, a plastic film layer and a double-sided adhesive tape sponge strip are adhered to the lower opening of the lower open seam strip. The quality of the open seam strip can be ensured by sticking the sponge strip with double-sided adhesive tape, and the root rot caused by slurry leakage can be prevented; the plastic film paper is pasted, so that the sand return of the bottom of the template due to water loss can be prevented, and the pollution to the clean water wall surface poured at the lower part can be prevented.
A bare concrete open joint construction method of an elevator test tower comprises the following steps:
(1) coating a release agent on the surfaces of the upper open seam strip and the lower open seam strip by adopting the bare concrete open seam strip template;
(2) fixing the template in place by using split bolts, and pouring concrete;
(3) after demolding, moving the template to the next construction position by adopting a hydraulic climbing formwork system, and enabling the lower open seam strip to be aligned to the upper open seam position formed by pouring in the embedding step (2);
(4) fixing the template in place by using split bolts, pouring concrete, and naturally flowing down the concrete in the pouring process to fill the gap between the lower open seam strip and the upper open seam in the step (2);
(5) and (5) repeating the step (3) and the step (4) until the construction is completed.
The release agent can be colorless transparent edible salad oil or butter.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the invention, the upper open seam strip and the lower open seam strip are fixed on the template body, and the upper open seam strip and the lower open seam strip with different cross section sizes are adopted, so that the initial open seam formed by the upper open seam strip is larger, the embedding difficulty of the lower open seam strip can be greatly reduced after climbing a formwork, and concrete naturally flows down to fill redundant gaps when a layer is poured, thereby ensuring the quality of open seam construction.
Drawings
FIG. 1 is a schematic illustration of a formwork system in construction;
FIG. 2 is an enlarged schematic view of the lower end of the die body system of FIG. 1;
FIG. 3 is an enlarged schematic view of the upper end of the template system of FIG. 1.
Wherein: 1. a template body; 2. arranging a top-seam strip; 3. a lower open seam strip; 4. and (4) oppositely pulling the bolts.
Detailed Description
The invention is further described below with reference to the following figures and examples:
the first embodiment is as follows: a bare concrete open joint construction method of an elevator test tower comprises the following steps:
(1) adopting a bare concrete open joint strip template, and smearing colorless transparent edible salad oil as a release agent on the surfaces of the upper open joint strip and the lower open joint strip;
the bare concrete open joint strip formwork is shown in attached drawings 1 to 3 and comprises a formwork body 1, an upper open joint strip 2 is fixedly connected to the upper portion of the formwork body 1, a lower open joint strip 3 is fixedly connected to the lower portion of the formwork body 1, and the distance between the upper open joint strip 2 and the lower open joint strip 3 is the same as the distance between open joints to be constructed (for example, 5 meters).
In this embodiment, the lower open seam strip is a plastic strip with a trapezoidal cross section, the trapezoidal lower bottom is connected with the formwork body, the length of the trapezoidal upper bottom is smaller than that of the lower bottom, and the specific size is determined according to the open seam to be constructed, for example, in one scheme, the lower bottom can be 2cm, the upper bottom can be 1cm, and the height is 1 cm. The upper open seam strip is a square batten with the cross section of 5cm in side length. The open joint strip is flatly arranged on the template, and the front side is drilled and repaired by putty. The open seam lines are straight, flat and smooth.
In the technical scheme, the cross section of the upper open joint strip can cover the cross section of the lower open joint strip, so that the upper open joint formed after pouring is large, and the lower open joint strip can be conveniently embedded into the upper open joint after climbing a formwork. Because the elevator test tower is of a barrel bundle structure, the template body is annular, and the upper open seam strip and the lower open seam strip are respectively looped in the horizontal direction.
In order to ensure the quality of the open joint and prevent the root from being rotten due to slurry leakage, a double-faced adhesive tape sponge strip is adhered to the lower opening of the open joint strip. The plastic film paper is stuck at the lower opening of the open seam strip, so that the dehydration and sand return of the bottom of the template are prevented, and the pollution to the clean water wall surface poured at the lower part is also prevented.
(2) Fixing the template in place by using the split bolts 4, and pouring concrete;
(3) after demolding, moving the template to the next construction position by adopting a hydraulic climbing formwork system, and enabling the lower open seam strip to be aligned to the upper open seam position formed by pouring in the embedding step (2);
(4) fixing the template in place by using split bolts, pouring concrete, and filling gaps between the lower open joint strips and the upper open joints in the step (2) by the concrete naturally flowing down in the pouring process;
(5) and (5) repeating the step (3) and the step (4) until the construction is completed.
Claims (3)
1. The utility model provides an as cast finish concrete open-seam strip template of elevator test tower, includes the template body, its characterized in that: the upper part of the template body is fixedly connected with an upper open seam strip, the lower part of the template body is fixedly connected with a lower open seam strip, the distance between the upper open seam strip and the lower open seam strip is the same as the distance between open seams to be constructed, the shape and the size of the cross section of the lower open seam strip are matched with the open seams to be constructed, and the cross section of the upper open seam strip is larger than that of the lower open seam strip;
the lower open seam strip is a plastic strip with a trapezoidal cross section, the lower bottom of the trapezoid is connected with the template body, and the length of the upper bottom of the trapezoid is smaller than that of the lower bottom; the upper open seam strip is a wood strip with a rectangular cross section, the side length of the rectangular connecting template body is greater than the length of the lower bottom of the trapezoid, and the other side length of the rectangle is greater than the height of the trapezoid;
the upper open seam strip and the lower open seam strip are fixedly connected with the template through screws by adopting front-side drilling, and the top surfaces of drilled holes are filled with putty and are flush with the periphery.
2. The bare concrete open seam strip template according to claim 1, wherein: and a plastic film layer and a double-sided adhesive sponge strip are adhered to the lower opening of the lower open seam strip.
3. The bare concrete open joint construction method of the elevator test tower is characterized by comprising the following steps:
(1) applying a release agent on the surfaces of the upper open seam strip and the lower open seam strip by using the bare concrete open seam strip template as claimed in any one of claims 1 to 2;
(2) fixing the template in place by using split bolts, and pouring concrete;
(3) after demolding, moving the template to the next construction position by adopting a hydraulic climbing formwork system, and enabling the lower open seam strip to be aligned to the upper open seam position formed by pouring in the embedding step (2);
(4) fixing the template in place by using split bolts, pouring concrete, and naturally flowing down the concrete in the pouring process to fill the gap between the lower open seam strip and the upper open seam in the step (2);
(5) and (5) repeating the step (3) and the step (4) until the construction is finished.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710483032.5A CN107100363B (en) | 2017-06-22 | 2017-06-22 | Bare concrete open joint strip template of elevator test tower and open joint construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710483032.5A CN107100363B (en) | 2017-06-22 | 2017-06-22 | Bare concrete open joint strip template of elevator test tower and open joint construction method |
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| CN107100363A CN107100363A (en) | 2017-08-29 |
| CN107100363B true CN107100363B (en) | 2022-09-16 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956458B (en) * | 2010-11-05 | 2012-01-11 | 中国建筑第八工程局有限公司 | Construction method of overlong and superhigh single-side fair-faced concrete wall |
| CN102121310B (en) * | 2011-01-17 | 2012-07-04 | 中建八局第三建设有限公司 | Double column constructional template for large-section ultrahigh steel reinforced clear water concrete and construction method thereof |
| CN103835303B (en) * | 2012-11-20 | 2016-08-03 | 贵阳铝镁设计研究院有限公司 | A kind of cast-type armored concrete shearing resistance method and structure |
| JP6009411B2 (en) * | 2013-06-05 | 2016-10-19 | 大成建設株式会社 | Joint material construction method and joint material support structure |
| CN103899088B (en) * | 2014-04-22 | 2016-02-03 | 中建八局第三建设有限公司 | Large span ultra-thin overlength cast-in-situ clear-water concrete Slate hanging construction method |
| CN105649328A (en) * | 2015-03-16 | 2016-06-08 | 中国建筑第四工程局有限公司 | Fixing method and structure for columnar mould |
| CN105839917B (en) * | 2016-05-18 | 2018-03-13 | 中国水利水电第十四工程局有限公司 | A kind of construction method of all-steel mold plate fair-faced concrete exposed joint strip and its outseam |
| CN207144477U (en) * | 2017-06-22 | 2018-03-27 | 中亿丰建设集团股份有限公司 | The clear-water concrete exposed joint strip template of Measurement of Elevator tower |
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