Fair-faced concrete exposed joint strip formwork of lift test tower and construction method for exposed joint
A technology of fair-faced concrete and open seam, which is used in formwork/formwork/work frame, processing of building materials, and on-site preparation of building components, etc. problems, to achieve the effect of ensuring quality and reducing the difficulty of embedding
Active Publication Date: 2017-08-29
ZHONGYIFENG CONSTR GRP
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Problems solved by technology
However, this method has problems in actual construction. After the formwork climbs, there is difficulty in matching the lower exposed joint strips with the corresponding upper exposed joints, and they cannot be completely embedded. As a result, during subsequent construction, due to the influence of concrete flow, exposed joints occur Quality problems, even pollute the lower poured clear water wall
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Embodiment 1
[0026] Embodiment one: a kind of clear-faced concrete open joint construction method of elevator test tower comprises the following steps:
[0027] (1) Use fair-faced concrete open seam formwork, and apply colorless and transparent edible salad oil on the surface of the upper and lower open seam strips as a release agent;
[0028] Among them, see the attached template for the exposed concrete joint strip template figure 1 To attach image 3 As shown, the template body 1 is included, the upper exposed seam strip 2 is fixedly connected to the upper part of the template body 1, and the lower exposed seam strip 3 is fixedly connected to the lower part of the template body 1, and the upper exposed seam strip 2 and The spacing of the lower exposed joint strips 3 is the same as that of the open joints to be constructed (for example, 5 meters).
[0029] In this embodiment, the lower open seam strip is a plastic strip with a trapezoidal cross section, the lower bottom of the trapezoi...
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The invention discloses a fair-faced concrete exposed joint strip formwork of a lift test tower and a construction method for an exposed joint. The fair-faced concrete exposed joint strip formwork comprises a formwork body and is characterized in that an upper exposed joint strip is fixedly connected on the upper portion of the formwork body; a lower exposed joint strip is fixedly connected on the lower portion of the formwork body; the spacing of the upper exposed joint strip and the lower exposed strip is the same as the spacing of the exposed joint to be constructed; the cross section shape and the size of the lower exposed joint strip are matched with the exposed joint to be constructed; and the cross section of the upper exposed joint strip is larger than the cross section of the lower exposed joint strip. At the time of construction, after the formwork is moved up to the next construction position by adopting a hydraulic climbing formwork system, the lower exposed joint strip is aligned to be embedded into the position of the upper exposed joint, concrete naturally flows down to fill a gap between the lower exposed joint strip and the upper exposed joint in the pouring process, and accordingly the quality of exposed joint construction is guaranteed.
Description
technical field [0001] The invention relates to a formwork for building construction, in particular to an open joint strip formwork for fair-faced concrete and a method for performing open joint construction by using the formwork. Background technique [0002] Facing fair-faced concrete refers to the concrete wall surface that directly uses the natural texture of concrete as the finishing effect. When fair-faced concrete is used in a large-height building, such as an elevator test tower, the test tower has a tube-beam structure and the building height is high (for example, the elevator test tower proposed by the applicant reaches a height of 268 meters), and a hydraulic climbing formwork system is required for construction. The overall facade needs to reach the grade of facing concrete, which means that it is necessary to directly use the large formwork system on the hydraulic climbing formwork system to directly carry out the construction of fair-faced concrete. [0003] D...
Claims
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Login to View More IPC IPC(8): E04G15/06E04G21/00
CPCE04G15/06E04G21/00
Inventor 李建华王长寿刘丹郑李君周志刚
Owner ZHONGYIFENG CONSTR GRP