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A layered combined concrete servo template construction method

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: 2022-08-09
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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  • A layered combined concrete servo template construction method
  • A layered combined concrete servo template construction method
  • A layered combined concrete servo template construction method

Examples

Experimental program
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Effect test

Embodiment 1

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

[0036] Please refer to Figure 1 to Figure 4 , a laminated composite concrete servo formwork, including:

[0037] Bottomless box body and displacement control system, the bottomless box body includes a fixed left side wall layer 2, a front side wall layer 1 and a rear side wall layer 3, and a right side stacked formwork group set movably; right side stacked formwork group Under the action of the displacement control system, it can approach or move away from the left wall layer; the upper and lower parts of the single-layer right laminated formwork are laid with high-strength smooth plastic layers 41, which are used to assist the right laminated formwork 4 to move and prevent concrete leakage; The bottom of the front side wall layer 1 and the rear side wall layer 3 of the bo...

Embodiment 2

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

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

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

[0048] Step S3, the displacement control system is erected in layers and evenly spaced, so that the top rods 71 ​​of the hydraulic jacks 7 are evenly and symmetrically close to the right laminated template 4 to ensure that they are stable and not ...

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Abstract

The invention belongs to the technical field of large-volume concrete crack control, and in particular relates to a construction method of a laminated composite concrete servo formwork, which aims to control large-volume concrete cracks. The formwork includes a bottomless box body and a displacement control system. The front side wall layer, left side wall layer and rear side wall layer of the bottomless box body are all fixed. Bottom box body; sliding rails are provided at the bottom of the front side wall layer and the rear side wall layer of the bottomless box body; The elevation is consistent with the elevation of the water-stop rubber strip, and the sliding components and the sliding rails cooperate with each other; the internal stress of the mass concrete in different layers is subjected to targeted and differentiated release treatment, so as to absorb and eliminate the differential temperature stress inside the concrete of each layer. f max‑n , to match the actual engineering, to prevent concrete cracking.

Description

technical field [0001] The invention belongs to the technical field of large-volume concrete crack control, and particularly relates to a construction method of a laminated composite 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 getting larger and larger, which makes the temperature rise faster and faster during the concrete pouring process, and the peak temperature is also higher and higher. , resulting in the continuous increase of temperature stress and the phenomenon of internal stress concentration. Once the stress is not released, cracks will occur inside the concrete, which will lead to concrete cracking, which is particularly prominent for mass concrete pouring under the existing formwork. [0003] At the same time, due to the large volume of mass concrete, its internal aggregate distribution is uneven, which easily leads to...

Claims

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Application Information

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Patent Type & Authority Patents(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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