CN204357001U - A kind of prefabrication and assembly construction profile steel concrete column skeleton - Google Patents

Abstract

A prefabricated assembled steel concrete column framework, including a high-performance concrete framework, the high-performance concrete framework is a hollow columnar structure, and a number of longitudinal bars and a number of section steels are arranged in the high-performance concrete framework along its length direction, wherein the longitudinal bars are embedded in high In the side wall of the high-performance concrete skeleton, the section steel is located in the central cavity of the high-performance concrete skeleton and fixed in the side wall of the high-performance concrete skeleton. Both steel and section steel are located in the surrounding of the stirrups. The utility model belongs to the outer frame part of the PSRC column prefabricated in the factory, which can be installed on the construction site, and finally the inner hollow part of the PSRC column is poured together with the beam and the slab, and is suitable for different projects. It has the characteristics of simple construction, low cost and excellent performance.

Description

A prefabricated steel concrete column skeleton

technical field

The utility model belongs to the technical field of buildings, in particular to a prefabricated steel concrete column frame.

Background technique

Steel Reinforced Concrete Structure (often translated as Steel Reinforced Concrete Structure, referred to as SRC structure) refers to the form of steel-concrete composite structure formed by configuring steel in the section of reinforced concrete members. Compared with the reinforced concrete structure, due to the configuration of steel inside the reinforced concrete section, the steel concrete structure has significant advantages such as high strength, high rigidity, good seismic performance, and small section size. Compared with the steel structure, because the steel is wrapped with reinforced concrete, the steel concrete structure has the outstanding advantages of low cost, high rigidity, good fire resistance and durability. Therefore, from the comprehensive analysis and comparison of economic cost, mechanical performance, durability and fire resistance, the steel concrete structure has the advantages of both reinforced concrete structure and steel structure, and has significant performance advantages.

At present, the steel concrete structure is mainly used in some large super high-rise buildings and long-span buildings, such as Shanghai Jinmao Tower, Shanghai World Financial Center, CCTV new station site, China World Trade Center Phase III main building and other projects. Some large super high-rise buildings and long-span buildings, such as Shanghai Jinmao Tower, Shanghai World Financial Center, CCTV new station site, and the main building of China World Trade Center Phase III, all use steel-concrete structures. Steel-concrete structures are seldom used in buildings. One of the most important reasons is that the on-site construction procedures of steel-concrete structures are numerous and the structural connections are complicated. It is precisely because of the outstanding disadvantage of complex construction of steel concrete structures that the popularization and application of steel concrete structures is greatly restricted, resulting in the failure of full play to the excellent comprehensive performance of steel concrete structures.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a prefabricated assembled steel concrete column skeleton. Based on the idea of partially prefabricated and partially cast-in-place, the utility model belongs to the external frame part of the PSRC column prefabricated in the factory, which can be It is installed on the construction site, and finally the inner hollow part of the PSRC column is poured together with the beams and slabs. It is suitable for different engineering conditions and has the characteristics of simple construction, low cost and excellent performance.

In order to achieve the above object, the technical solution adopted by the utility model is:

A prefabricated assembled steel concrete column framework, including a high-performance concrete framework 1, the high-performance concrete framework 1 is a hollow columnar structure, and a number of longitudinal bars 2 and a number of section steel 3 are arranged in the high-performance concrete framework 1 along its length direction, wherein , the longitudinal reinforcement 2 is embedded in the side wall of the high-performance concrete skeleton 1, the section steel 3 is located in the central cavity of the high-performance concrete skeleton 1 and fixed in the side wall of the high-performance concrete skeleton 1, along the circumferential direction of the high-performance concrete skeleton 1 A number of stirrups 4 at equal intervals are provided, and both the longitudinal bars 2 and the shaped steel 3 are located in the surround of the stirrups 4 .

The section steel 3 is an I-beam.

The section steel 3 is composed of two I-beams interlaced in a cross shape.

The section steel 3 protrudes from both ends of the prefabricated high-performance concrete hollow column 1 in the column length direction.

The stirrups 4 are welded composite stirrups or continuous spiral high-strength stirrups.

Compared with the prior art, the beneficial effects of the utility model are:

1) Each component can be prefabricated and combined on site. It can not only ensure the integrity, but also greatly improve the anti-seismic performance.

2) Easy construction. The prefabricated steel frame parts are all prefabricated in the factory. On the construction site, the prefabricated steel is directly connected to the node or steel column (or transitionally connected to the concrete column), and then the hollow part of the concrete is poured to complete the construction and installation of the PSRC column. Compared with the construction and installation of traditional SRC columns, there is no need to bind steel bars, set up formwork, remove formwork and erect temporary supports under the columns on site. After rational design, the construction and installation of PSRC columns will be as convenient and fast as steel columns, and the construction performance will be greatly improved.

3) Function improvement. High-performance concrete can be used in the prefabricated part, and ordinary-strength concrete can be used in the cast-in-place part, and the strength grades of the two concretes can be different. Therefore, in practical engineering applications, the choice of floor concrete can be independent of the strength of the concrete in the column, and various types of concrete with different characteristics can be selected to effectively improve the functional requirements of the structure. For example, for the cast-in-place concrete of the PSRC column, in order to save resources and energy, recycled concrete can be used; in order to reduce the self-weight, lightweight aggregate concrete can be used; in order to improve the effect of vibration reduction and sound insulation, rubber concrete or sound-absorbing concrete can be used; Performance, thermal insulation concrete can be used.

4) The construction quality is good. In the construction of traditional SRC columns, due to the many construction procedures and high construction difficulties of SRC columns, quality problems such as poor concrete vibration in the SRC column web, insufficient concrete strength, and dislocation of steel bars in the column often occur, and the construction quality is difficult to control. In the PSRC column, the frame part of the PSRC column is prefabricated in the factory, the concrete is poured and vibrated conveniently, and steam curing can be used, and the concrete construction quality is easy to control, especially when high-performance concrete is used, the PSRC column has more obvious advantages in construction quality control .

Generally speaking, compared with traditional SRC columns, PSRC columns using prefabricated assembly technology simplifies the construction process and construction difficulty, can effectively solve the key problems that have long restricted the popularization and application of traditional SRC columns, and can give full play to and effectively improve the traditional SRC columns. It has significant advantages in mechanical performance, durability, fire resistance and economic performance, and can be widely used in various reinforced concrete and steel structures, especially for long-span, heavy-load or complex, irregular high-rise buildings and buildings. Super high-rise buildings. Therefore, it is of great engineering practical significance to carry out in-depth research on PSRC columns to promote their popularization and application.

Description of drawings

Fig. 1 is a schematic structural view of the skeleton of the prefabricated steel concrete column of the present invention.

Fig. 2 is a top view of the skeleton of the prefabricated steel concrete column of the present invention.

Fig. 3 is a top view of the prefabricated assembled steel concrete column obtained by using the skeleton of the prefabricated assembled steel concrete column of the utility model.

Detailed ways

The implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and examples.

The utility model is a prefabricated assembled steel concrete column framework, as shown in Figure 1 and Figure 2, comprising a high-performance concrete framework 1, the high-performance concrete framework 1 is a hollow columnar structure, in the high-performance concrete framework 1 along its length direction A number of longitudinal bars 2 and a number of shaped steels 3 are provided, wherein the longitudinal bars 2 are embedded in the side walls of the high-performance concrete skeleton 1, and the shaped steels 3 are located in the central cavity of the high-performance concrete skeleton 1 and fixed on the side of the high-performance concrete skeleton 1 In the wall, a number of stirrups 4 are arranged at equal intervals along the circumference of the high-performance concrete skeleton 1 , and the longitudinal bars 2 and section steel 3 are both located in the surround of the stirrups 4 . The section steel 3 is composed of two I-beams interlaced in a cross. The section steel 3 protrudes from both ends of the prefabricated high-performance concrete hollow column 1 in the column length direction. The stirrups 4 can be welded composite stirrups or continuous spiral high-strength stirrups.

The high-performance concrete skeleton 1, longitudinal reinforcement 2, section steel 3 and stirrup 4 of the utility model are prefabricated in a factory at one time, and the formed skeleton is transported to the construction site to be spliced with columns and beams, and poured in the center of the high-performance concrete skeleton 1 Concrete 5, to obtain prefabricated steel concrete columns, as shown in Figure 3. The prefabricated assembled steel concrete column adopts the idea of partial prefabricated assembly and part cast-in-place, which can obtain better overall performance.

in:

1) The high-performance concrete on which the high-performance concrete skeleton 1 is based can improve the crack resistance, durability and fire resistance of prefabricated steel concrete columns.

2) In the prefabricated steel skeleton part, a small section of section steel is used to connect with the extended section steel of the pre-embedded column with high-strength bolts during construction and installation, which can facilitate the connection of the prefabricated steel concrete column and the column.

3) In order to facilitate the manufacture of the hollow part of the column of the prefabricated high-performance concrete skeleton 1, the concrete rubber mandrel can be reused.

To sum up, the prefabricated assembled steel concrete column skeleton of the utility model produces an effective circumferential binding force on the secondary poured concrete, thereby improving its bearing capacity. The performance concrete frame section provides some protection against lateral damage. Effectively improve the integrity of beams and columns structurally, improve the seismic performance of the structure, and at the same time greatly improve the deformation capacity of components during transportation and hoisting, and realize the comprehensive improvement and enhancement of the mechanical performance and service performance of prefabricated steel concrete components. The utility model has many significant performance advantages such as convenient construction, wide applicability, and high overall performance, and can be widely used in various reinforced concrete engineering structures such as buildings, factory buildings, bridge columns, etc., has wide application prospects, and has important engineering practice significance and social economy benefit.

Claims (5)

1. A prefabricated assembled steel concrete column skeleton is characterized in that it comprises a high-performance concrete skeleton (1), and the high-performance concrete skeleton (1) is a hollow columnar structure, along its lengthwise direction in the high-performance concrete skeleton (1). Several longitudinal bars (2) and several shaped steels (3) are provided, wherein the longitudinal bars (2) are embedded in the side walls of the high-performance concrete skeleton (1), and the shaped steels (3) are located in the central hollow of the high-performance concrete skeleton (1). and fixed in the side wall of the high-performance concrete frame (1), a number of stirrups (4), longitudinal bars (2) and section steel (3) are arranged at equal intervals along the circumference of the high-performance concrete frame (1) All are located in the encirclement of stirrup (4). 2. The prefabricated assembled steel concrete column skeleton according to claim 1, characterized in that, the shaped steel (3) is an I-shaped steel. 3. The prefabricated assembled steel concrete column skeleton according to claim 1, characterized in that, the shaped steel (3) is composed of two I-beams interlaced in a cross. 4. The prefabricated assembled steel concrete column skeleton according to claim 1, 2 or 3, characterized in that the section steel (3) protrudes from both ends of the prefabricated high-performance concrete hollow column (1) in the column length direction. 5. The prefabricated assembled steel concrete column skeleton according to claim 1, wherein the stirrups (4) are welded composite stirrups or continuous spiral high-strength stirrups.