CN103132652A

CN103132652A - Prefabricating embedded spiral hopped column formwork core cast-in-place concrete column of and manufacturing method

Info

Publication number: CN103132652A
Application number: CN2013100149011A
Authority: CN
Inventors: 尹红宇; 荀勇; 支正东; 邵云霞; 王海波; 朱文翔
Original assignee: JIANGSU Q&Y BUILD GROUP CO Ltd; Yangcheng Institute of Technology
Current assignee: JIANGSU Q&Y BUILD GROUP CO Ltd; Yangcheng Institute of Technology; Yancheng Institute of Technology
Priority date: 2013-01-15
Filing date: 2013-01-15
Publication date: 2013-06-05

Abstract

The invention discloses a prefabricating embedded spiral hopped column formwork core cast-in-place concrete column and a manufacturing method. The prefabricating embedded spiral hopped column formwork core cast-in-place concrete column comprises a prefabricating embedded spiral hopped column formwork, a force suffered main rib and core concretes and is in a novel assembling monolithic structure which is combined a structure and a template in a whole. The prefabricating embedded spiral hopped column formwork core cast-in-place concrete column is characterized in that a column formwork is manufactured by spiral stirrups and concrete protective layers in factories, the column formwork is installed in the construction site, the force suffered main rib is inserted, concretes are poured, and the reinforced concrete column is formed. The column formwork is made of high-performance fine aggregate concretes and solid matter spiral stirrups and capable of strengthening restraint function to the core concretes and improving bearing capacity and extending property of columns. The column formwork not only serves as a construction template, but also as a constituent part of the structure to join common works, and the column formwork is beneficial for saving a mass of template work amount. The prefabricating embedded spiral hopped column formwork core cast-in-place concrete column has the advantages of being simple in construction, convenient to construct, high in construction efficiency, low in cost, high and strong, good in shock resistance, good in endurance quality and the like, beneficial for saving resources and energy and capable of promoting developments of construction industrialization.

Description

Prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns and preparation method

Technical field

The present invention relates to cast in place and precast construction field in civil engineering structure, specifically a kind of prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns and preparation method thereof.

Background technology

Along with the modern project structure to greatly across, towering, heavily loaded future development, constructional materials and building structure must have good bearing capacity, ductility, durability and satisfy the industrialization of construction industry requirement.Reinforced concrete structure with its good mechanical property, is the basic structure that generally adopts in engineering always.

In reinforced concrete post, the configuration spiral stirrup to the concrete horizontal restrain of pressure zone (cuff) effect highly significant, has improved the mechanical property of post widely, and the solid matter column with spiral hooping has good anti-seismic performance under seismic loading.Yet stirrup is overstocked to be unfavorable for concreting and to guarantee construction quality; And in the integral cast-in-situ concrete structure, the form work engineering amount is large, job site wet trade amount is large, efficiency of construction is low, large to ambient influnence.

Precast reinforced concrete construction is an important directions of building structure development, more meets the requirements such as green construction and environmental protection, reduces the negative effect to environment, follows the principle of sustainable development.The problems such as yet fabricated construction exists the joint structure complexity entirely, and anti-seismic performance is weak.Therefore, the development cast in place and precast construction, be conducive to industrialization of construction industry development, enhance productivity, energy conservation and the development Green environmental-protection building.

Summary of the invention

The present invention is prefabricated into the post formwork with spiral stirrup together with concrete cover, and job site erection column formwork inserts the muscle of being advocated, and concreting forms reinforced concrete post, and it is that a kind of structure set and template are in the novel cast in place and precast construction of one.

The invention provides a kind of prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns and preparation method, the prefabricated post formwork is applicable to make the assembled integral reinforced concrete post, realized by the following technical programs, it is characterized in that, under normal operating condition, comprise prefabricated embedded with spiral tied column formwork 1, advocated muscle 2 and core cast-in-situ concrete 3.

In described member, prefabricated embedded with spiral tied column formwork 1 is to be made by high-performance fine aggregate concrete 4 and solid matter spiral stirrup 5; the muscle 2 of being advocated can partly or entirely first insert; be formed in advance in the post formwork, post formwork thickness is the protective layer thickness that satisfies the reinforced concrete post master muscle of regulation and stipulation.

High-performance fine aggregate concrete 4 in described post formwork 1 is comprised of Portland cement, medium sand, flyash, high efficiency water reducing agent and water, and cubic compressive strength is 60-70MPa.

In described post formwork, the pitch of solid matter spiral stirrup 5 is 20-50mm.

The preparation method of described prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns is characterized in that: prefabrication embedded with spiral tied column formwork, and job site erection column formwork inserts the muscle of being advocated, and concreting forms reinforced concrete post.

The invention has the beneficial effects as follows that the prefabricated post formwork adopts high-performance fine aggregate concrete and solid matter spiral stirrup to make, strengthened the effect of contraction to core concrete, improve bearing capacity and the ductility of post.The post formwork both as the construction formwork of reinforced concrete post, was also participated in co-operation as the ingredient of structure, was conducive to save a large amount of form work engineering amounts, reduced the cast in situs engineering quantity.The characteristics such as the present invention has simple structure, easy construction, efficiency of construction is high, cost is low, intensity is high, anti-seismic performance and excellent in durability are conducive to environmental protection and realize industrialization of construction industry.

Description of drawings

Fig. 1 is the schematic diagram of the prefabricated embedded with spiral tied column of the present invention formwork core cast-in-situ concrete columns.

Fig. 2 is spiral stirrup schematic diagram in the present invention.

In figure, 1, prefabricated embedded with spiral tied column formwork; 2, the muscle of being advocated; 3, core cast-in-situ concrete; 4, high performance concrete; 5, solid matter spiral stirrup.

The specific embodiment

Provide specific embodiment below in conjunction with accompanying drawing, describe the prefabricated embedded with spiral tied column of the present invention formwork core cast-in-situ concrete columns and preparation method thereof in detail.

Prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns structural representation as shown in Figure 1, it comprises prefabricated embedded with spiral tied column formwork 1, advocated muscle 2 and core cast-in-situ concrete 3.(circular (Fig. 1 a), square (Fig. 1 b)) and height are according to the section form configuration of structure design and post advocated muscle 2 and spiral stirrup 5(circular (Fig. 2 a), square (Fig. 2 b)) to determine the section form of post according to architectural design.

At first spiral stirrup 5 is positioned in factory in the mould of making prefabricated post formwork 1, builds the high performance concrete 4 for preparing, make prefabricated post formwork 1.

During construction, prefabricated post formwork 1 is installed, is inserted the muscle 2 of being advocated, build core concrete 3, form reinforced concrete post.

Claims

1. prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns and preparation method, is characterized in that it comprises embedded with spiral tied column formwork 1, advocated muscle 2 and core cast-in-situ concrete 3.

2. prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns according to claim 1, it is characterized in that described post formwork 1 is mainly used in reinforced concrete post, the post formwork had not only been worked as construction formwork but also as the ingredient of structure, had the advantages that to save construction formwork and labour.

3. prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns according to claim 1, it is characterized in that described post formwork 1 is to be made by high-performance fine aggregate concrete 4 and solid matter spiral stirrup 5, the muscle 2 of being advocated can partly or entirely first insert, be formed in advance in the post formwork, and post formwork thickness is the protective layer thickness that satisfies the reinforced concrete post master muscle of code requirement;

The prefabricated post formwork has been strengthened the effect of contraction to core concrete in conjunction with high-performance fine aggregate concrete and solid matter spiral stirrup, improves bearing capacity and the ductility of post.

4. prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns according to claim 1, it is characterized in that described high-performance fine aggregate concrete 4, be comprised of Portland cement, medium sand, flyash, high efficiency water reducing agent and water, cubic compressive strength is 60-70MPa.

5. prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns according to claim 1, the pitch that it is characterized in that described solid matter spiral stirrup 5 is 20-50mm.

6. the preparation method of prefabricated embedded with spiral tied column formwork core cast-in-situ concrete columns according to claim 1, it is characterized in that: prefabrication embedded with spiral tied column formwork, job site erection column formwork inserts the muscle of being advocated, build core concrete, form reinforced concrete post.