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Assembly-type prefabricated concrete column without dismantling formworks and preparation process of assembly-type prefabricated concrete column

A prefabricated concrete, dismantling-free technology, used in manufacturing tools, columns, piers, etc., can solve problems such as structural performance degradation, achieve good shock absorption, improve overall bearing capacity, and enhance integrity and overall compressive strength. Effect

Pending Publication Date: 2020-05-12
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before hoisting, if there is adverse weather, the shock-absorbing support pre-installed on the foundation may be affected by rainwater and other factors, resulting in a decrease in structural performance

Method used

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  • Assembly-type prefabricated concrete column without dismantling formworks and preparation process of assembly-type prefabricated concrete column
  • Assembly-type prefabricated concrete column without dismantling formworks and preparation process of assembly-type prefabricated concrete column
  • Assembly-type prefabricated concrete column without dismantling formworks and preparation process of assembly-type prefabricated concrete column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figures 1 to 8The shown assembly type prefabricated concrete column without disassembly formwork includes a shock absorbing support 14, and the shock absorbing support 14 includes an upper protective cover 2, a lower protective cover 9 and an A-shaped shrapnel 8, and the top of the upper protective cover 2 is provided with The column connection hole 1, the A-shaped shrapnel 8 are made of memory alloy and the first high-strength spring 12, the number of the first high-strength spring 12 in the middle can be adjusted according to actual needs, and the shock-absorbing support 14 also includes the second high-strength Spring 4, one end of the second high-strength spring 4 is welded together with the blocking part on the lower protective cover 9, and the other end is welded together with the bottom of the A-type shrapnel 8, and the second high-strength spring 4 is welded together with the first high-strength spring 12 The elastic coefficients are different. When the...

Embodiment 2

[0042] Such as Figures 1 to 4 , A prefabricated concrete column with an assembled formwork without disassembly shown in 9 to 12, including a shock absorber 14, and the shock absorber 14 includes an upper protective cover 2, a lower protective cover 9 and an A-shaped shrapnel 8, and the upper protective cover 2 There is a column connection hole 1 at the top of the top, the A-shaped shrapnel 8 is made of memory alloy and the first high-strength spring 12, the number of the first high-strength spring 12 in the middle can be adjusted according to actual needs, and the shock-absorbing support 14 also includes The second high-strength spring 4, one end of the second high-strength spring 4 is welded together with the blocking part on the lower protective cover 9, and the other end is welded together with the bottom of the A-type shrapnel 8, and the second high-strength spring 4 is welded together with the first The coefficient of elasticity of the high-strength spring 12 is differen...

Embodiment 3

[0045] A preparation process for prefabricated concrete columns without disassembly formwork, comprising the following steps:

[0046]Preparation of disassembly-free composite template 15: 1) Material measurement: weigh cement, sand, compacting agent and water reducer by weight, and the compacting agent is to minimize the impact of Ca(OH)2 produced in the hydration process on the glass fiber Corrosion, use self-made powdery ZQ compacting agent to improve the durability of the formwork, use medium sand with a fineness modulus of 2.5 and a bulk density of 1450Kg / m3 for the sand, and use polycarboxylate high-efficiency water reducer as the water reducer. The allowable deviation of sand is less than plus or minus 3%, and the allowable deviation of cement, compactor and water is less than plus or minus 2%; 2) Stirring and feeding: use a self-falling mixer, first add 1 / 2 of the water, and then add sand and cement , after stirring for 1 minute, add the remaining 1 / 2 of the water, and...

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Abstract

The invention discloses an assembly-type prefabricated concrete column without dismantling the formworks and a preparation process of the assembly-type prefabricated concrete column. The assembly-typeprefabricated concrete column comprises a prefabricated concrete column body, the prefabricated concrete column body is connected with a shock absorption support through a bolt and an iron base plateand comprises the four composite formwork without dismantling, a main reinforcement and a filling concrete part, stirrups are bound on the main reinforcement at equal interval, the four composite formworks without dismantling are externally buckled on a rectangular cage reinforced skeleton frame formed by the main reinforcement and the stirrups, two rows of rectangular square grooves are formed in the inner side surface of each composite formwork without dismantling, the filling concrete part is poured in a rectangular cylinder-shaped frame defined by the composite formworks without dismantling, bolt holes corresponding to column connection holes are formed in the filling concrete part, and bolts are connected within the column connection holes and the bolt holes in a penetrating mode. According to the assembly-type prefabricated concrete column without dismantling formworks, the prefabricated concrete column body and the shock absorption support are assembled as a whole to avoid theerosion of the shock absorption support by the rain and other adverse factors, and the shock absorption support can play a high shock absorption role and reduces the damage of the whole column body inan earthquake disaster.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to an assembled prefabricated concrete column without disassembly formwork and a preparation process thereof. Background technique [0002] At present, my country's construction industry is developing rapidly. As people put forward new requirements for the efficiency, environmental protection, and quality of building construction, prefabricated buildings have begun to come into people's eyes. With the maturity of related supporting technologies and policy With support, prefabricated buildings will become the mainstream construction method in the future. [0003] Although prefabricated buildings have many advantages, due to limitations in construction technology and earthquake resistance, it cannot completely replace the integrity of cast-in-place. Its integrity and rigidity are weak, and its anti-seismic impact ability is poor. In an earthquake, the buil...

Claims

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Application Information

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IPC IPC(8): E04C3/34E04B1/36E04B1/98E04H9/02B28B23/02
CPCB28B23/02E04B1/36E04B1/98E04C3/34E04H9/021E04H9/025
Inventor 周双喜罗二舟揭保如成依贤
Owner EAST CHINA JIAOTONG UNIVERSITY
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