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Construction method of laminated combined concrete servo formwork

A construction method and concrete technology, applied in the formwork/formwork/work frame, formwork/formwork/workframe connectors, formwork/formwork components, etc., can solve the impact of concrete hydration heat and stress simulation calculation analysis Accuracy, increase the difficulty of controlling the stress release of mass concrete, and the difference in thermal conductivity of concrete, etc., to achieve the effect of not being easy to deform, low cost, and meeting the design size requirements

Active Publication Date: 2021-10-19
SHANGHAI CONSTRUCTION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At the same time, due to the large volume of mass concrete, the uneven distribution of its internal aggregates may easily lead to differences in the thermal conductivity of concrete in different regions, which in turn affects the accuracy of the simulation calculation and analysis of the heat of hydration and stress inside the concrete, and ultimately greatly increases the The Difficulty of Controlling Internal Stress Release in Mass Concrete

Method used

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  • Construction method of laminated combined concrete servo formwork
  • Construction method of laminated combined concrete servo formwork
  • Construction method of laminated combined concrete servo formwork

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Embodiment 1

[0035] Combine below Figure 1 to Figure 4 , detailing the structural composition of the laminated combined concrete servo formwork used in the construction method of the present invention.

[0036] Please refer to Figure 1 to Figure 4 , a stacked combined concrete servo formwork, comprising:

[0037] Bottomless box and displacement control system, the bottomless box includes fixed left side wall layer 2, front side wall layer 1 and rear side wall layer 3, and right stacked formwork set that is movable; right stacked formwork set It can approach or stay away from the bottomless box under the action of the displacement control system; the upper and lower parts of the single-layer right laminated formwork are laid with a high-strength smooth plastic layer 41, which is used to assist the right laminated formwork 4 to move and prevent concrete from leaking; The bottom of the front side wall layer 1 and the rear side wall layer 3 of the bottomless box body are all provided with ...

Embodiment 2

[0045] Please continue to refer Figure 1 to Figure 4 , the present invention also provides a construction method for a stacked combined concrete servo formwork, the construction method adopts the aforementioned stacked combined concrete servo formwork, and the construction method includes the following steps:

[0046] Step S1, erecting and fixing the left side wall layer 2, the front side wall layer 1 and the rear side wall layer 3 of the bottomless box respectively according to the design;

[0047] Step S2, erect n layers of right-side laminated formwork 4 from bottom to top to the design elevation position, and construct a temporary fixed structure to form a right-side laminated formwork group, where n is a natural number;

[0048] Step S3, set up the displacement control system layer by layer at even intervals, so that the ejector rod 71 of the hydraulic jack 7 is evenly and symmetrically close to the stacked formwork 4 on the right side, ensuring that it is stable and doe...

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Abstract

The invention belongs to the technical field of mass concrete crack control, particularly relates to a construction method of a laminated combined concrete servo formwork, and aims to control mass concrete cracks. The formwork comprises a bottomless box body and a displacement control system; a front side wall layer, a left side wall layer and a rear side wall layer of the bottomless box body are fixed, and a right side laminated formwork group is close to or far away from the bottomless box body under the action of the displacement control system; sliding rails are arranged in the bottoms of the front side wall layer and the rear side wall layer of the bottomless box body; a water stop rubber strip and a sliding assembly are installed at the front end and the middle end of the bottom of the right side laminated formwork group respectively, the elevation of the sliding assembly is consistent with the elevation of the water stop rubber strip, and the sliding assembly is matched with the sliding rails; and the internal stress of mass concrete in different layers of areas is subjected to targeted differential release treatment, the differential temperature stress f<max-n> in each layer of concrete is absorbed and eliminated, the engineering practice is matched, and concrete cracking is prevented.

Description

technical field [0001] The invention belongs to the technical field of large-volume concrete crack control, and in particular relates to a construction method of a laminated and combined concrete servo formwork. Background technique [0002] With the continuous development of concrete structures towards higher heights and larger spans, the size of concrete structures is also increasing, which makes the temperature rise faster and faster during the concrete pouring process, and the peak temperature is also higher and higher , leading to the continuous increase of temperature stress and internal stress concentration phenomenon, once the stress is not released, cracks will be generated inside the concrete, which will lead to concrete cracking, which is especially prominent for mass concrete pouring under the existing formwork. [0003] At the same time, due to the large volume of mass concrete, the uneven distribution of its internal aggregates may easily lead to differences in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G9/10E04G17/00E04G11/22
CPCE04G9/10E04G17/005E04G11/22Y02E10/20
Inventor 徐俊占羿箭王圣怡
Owner SHANGHAI CONSTRUCTION GROUP
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