CN101435250A - Prefabricated common concrete pipe restricted type regeneration concrete core composite column and manufacturing method thereof - Google Patents

Abstract

The invention discloses a column, especially relating to a prefabricated common concrete pipe cast-in-situ recycled concrete core composite column and manufacturing method thereof. The composite column is formed by superposing a prefabricated common concrete hollow column and a cast-in-situ recycled concrete core. The common concrete hollow column arranges the longitudinal bearing steel bar and the rectangle stirrup of the column according to the bearing condition. The common concrete is poured after the inner and the outer surfaces of the hollow column are supported with molds, and the prefabricated common concrete hollow column is formed after maintenance and demolding. When constructing, a prefabricated common concrete pipe is taken as formwork to pour the recycled concrete, and the concrete is formed after maintenance. The prefabricated common concrete pipe plays constraint function to the recycled concrete core therein, and can effectively improve the bearing capacity and ductility of the recycled concrete. In this way, on the precondition of guaranteeing the bearing capacity and ductility of the composite column, the recycled concrete is effectively used, and the double functions of environmental protection and utility are played.

Description

Prefabricated common concrete pipe restricted type regeneration concrete core composite column and preparation method

Technical field

The present invention is a kind of post, cast-in-place regeneration concrete core composite column of particularly a kind of prefabricated common concrete pipe and preparation method.

Background technology

Along with the continuous development of urbanization process, environmental problem highlights day by day, and sustainable development is brought into schedule.Utilizing Limited resources effectively and reasonably is the only way of realizing sustainable development.

China is the resources consumption big country of a shortage of resources, extensive operation, and economic growth more and more is subjected to the constraint of resource and environment.Being on the increase of the building waste that produces along with builing industry recycled discarded concrete, with the discarded concrete resource, is processed into regeneration aggregate and then is mixed with regeneration concrete, not only can realize recycling, and can solve the component environment problem.The application of building structure center pillar is very extensive, therefore, from economizing on resources, changes the extensive operation mode of production, walks the angle of sustainable development path and considers that the research that regeneration concrete is applied to post just has very important realistic meaning.

The domestic and international mechanical property requirements that can satisfy structure basically to the material property that studies show that regeneration concrete and the mechanical property of regeneration concrete, but since the adhesive property of regeneration concrete and reinforcing bar a little less than, therefore utilize the application of whole regeneration concretes making posts fewer.

Summary of the invention

The present invention proposes a kind of prefabricated common concrete pipe restricted type regeneration concrete core composite column and preparation method, this combined column improves the application of regeneration concrete in post under the condition of bearing capacity that ensures post and ductility, realize the regeneration of the energy.

To achieve these goals, the present invention has taked following technical scheme.This combined column comprises common concrete hollow column and is fixed on the interior recycled concrete core of common concrete hollow column.

The preparation method of prefabricated common concrete pipe restricted type regeneration concrete core composite column, this method may further comprise the steps:

1) steel mesh reinforcement in the colligation prefabricating common concrete hollow column, described steel mesh reinforcement comprises longitudinal stress reinforcing bar and stirrup;

2) begin to pour into a mould ordinary concrete after inside and outside template of steel mesh reinforcement, steel mesh reinforcement is a protective layer thickness apart from the distance of exterior sheathing;

3) common concrete hollow column is made into the hollow column of smooth outer surface, inner surface plucking;

4) form removal after the intensity of common concrete hollow column reaches requirement;

5) with the prefabricating common concrete hollow column as template, cast-in-place regeneration concrete in it;

6) maintenance reaches intensity, and ordinary concrete and regeneration concrete are connected as a single entity, and are prefabricated common concrete pipe restricted type regeneration concrete core composite column.

The present invention utilizes the prefabricated tubular outer casing of ordinary concrete, the inner recycled concrete core of filling, not only can well solve regeneration concrete and the more weak problem of reinforcing bar adhesive property, and strengthened constraint to recycled concrete core with the principle of similar concrete filled steel tube, improved the bearing capacity and the ductility of regeneration concrete post.

Description of drawings

Fig. 1 is the schematic cross-section of prefabricated common concrete pipe restricted type regeneration concrete core composite column of the present invention;

Fig. 2 is the schematic cross-section of prefabricated common concrete pipe restricted type regeneration concrete core composite column precast concrete hollow column of the present invention;

Fig. 3 is the schematic cross-section behind the prefabricated common concrete pipe restricted type regeneration concrete core composite column cast regeneration concrete of the present invention;

Among the figure: 1, common concrete hollow column, 2, ordinary concrete, 3, stirrup, 4, the longitudinal stress reinforcing bar, 5, recycled concrete core.

The specific embodiment

Below in conjunction with Fig. 1～Fig. 3 the embodiment of the invention is described in further detail:

Present embodiment is formed by prefabricating common concrete hollow column 1 and cast-in-place recycled concrete core 5 superpositions.Recycled concrete core 5 is fixed in the common concrete hollow column 1.Wherein, as shown in Figure 2, obtain behind the cast-in-place ordinary concrete of steel mesh reinforcement that common concrete hollow column is made up of longitudinal stress reinforcing bar 4 and stirrup 3.During construction, prefabricating common concrete hollow column 1 is prefabricated common concrete pipe restricted type regeneration concrete core composite column after the engineering completion, as shown in Figure 3 as the template of cast-in-place recycled concrete core 5.

The preparation method of prefabricated common concrete pipe restricted type regeneration concrete core composite column, its order is as follows:

1) steel mesh reinforcement of colligation prefabricating common concrete hollow column, this steel mesh reinforcement comprise longitudinal stress reinforcing bar 4 and the colligation stirrup 3 in longitudinal stress reinforcing bar 4 outsides, and wherein stirrup adopts rectangle hoop, to play effect of contraction;

2) begin cast after making the inner and outer template of common concrete hollow column, steel mesh reinforcement is a protective layer thickness apart from the distance of exterior sheathing; The minimum place of common concrete hollow column thickness should be greater than 50mm;

3) common concrete hollow column will be made into smooth outer surface, inner surface plucking;

4) form removal after Strength of Common reaches requirement;

5) prefabricated common concrete pipe concentrated be transported to the building site, during construction, with prefabricated common concrete pipe as template, cast-in-place regeneration concrete;

6) maintenance reaches intensity, and ordinary concrete and regeneration concrete are connected as a single entity, and are prefabricated common concrete pipe restricted type regeneration concrete core composite column.

Claims (2)

1, prefabricated common concrete pipe restricted type regeneration concrete core composite column is characterized in that: comprise common concrete hollow column and be cast in the interior recycled concrete core of common concrete hollow column.

2, the preparation method of prefabricated common concrete pipe restricted type regeneration concrete core composite column according to claim 1 is characterized in that, this method may further comprise the steps:

1) steel mesh reinforcement in the colligation prefabricating common concrete hollow column, described steel mesh reinforcement comprises longitudinal stress reinforcing bar and stirrup;

2) begin to pour into a mould ordinary concrete after inside and outside template of steel mesh reinforcement, steel mesh reinforcement is a protective layer thickness apart from the distance of exterior sheathing;

3) common concrete hollow column is made into the hollow column of smooth outer surface, inner surface plucking;

4) form removal after the intensity of common concrete hollow column reaches requirement;

5) with the prefabricating common concrete hollow column as template, cast-in-place regeneration concrete in it;

6) maintenance reaches intensity, and ordinary concrete and regeneration concrete are connected as a single entity, and are prefabricated common concrete pipe restricted type regeneration concrete core composite column.

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