Concrete prefabricated column positioned and mounted by profile steel

Abstract

The utility model discloses a concrete precast column utilizing profile steel to position and install, which comprises a concrete base and a concrete column, the upper end of the concrete base is provided with a plurality of inserting holes in a penetrating mode, and the upper side and the lower side of the concrete column are fixedly connected with a plurality of reserved longitudinal bars in a penetrating mode. Transverse steel bars are arranged and fixedly connected among the reserved longitudinal bars, and positioning profile steel is fixedly connected to the middle of the lower end of the concrete column. The positioning profile steel at the lower end of the concrete column plays a role in positioning and limiting in the construction process, the positioning profile steel can enable the whole concrete column to be accurate in installation and convenient to connect aiming at the problems that an existing prefabricated column is difficult to install and has positioning deviation and transverse drifting of reinforcing steel bars, the problem that the existing prefabricated column is difficult to socket and spigot is solved, and the construction efficiency is improved. In addition, the positioning profile steel can bear vertical loads, horizontal displacement of the prefabricated column is avoided, and then reserved longitudinal bars at the lower end of the concrete column can be in socket alignment.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete prefabricated column fixing, specifically a concrete prefabricated column positioned and installed by using steel sections. Background Technology

[0002] In the existing construction technology, the building mold is poured with concrete. In order to further increase the reliability of the connection nodes, the engineering staff has developed a variety of connection nodes. Currently, the commonly used ones are grouting sleeve connection, on-site wet connection with reserved post-casting strips, steel structure connection nodes, etc. Among them, the sleeve grouting connection has the advantages of wide application range, short anchoring length and high reliability. At the same time, it also has the disadvantages of high positioning accuracy requirements, great difficulty in grouting and difficult quality detection;

[0003] Although on-site wet connection can ensure the reliability of the connection node, due to the need to use longitudinal reinforcement and hoop to support and position the prefabricated part during the installation process, it is easy for the longitudinal reinforcement to drift horizontally, and the reserved steel bars cannot be inserted into the hoop, which requires manual correction, resulting in difficulties in on-site installation and longitudinal reinforcement deviation. In order to solve this problem, we proposed a concrete prefabricated column that uses steel for positioning and installation. Contents of utility model

[0004] The purpose of the utility model is to provide a prefabricated concrete column that is positioned and installed using steel sections, so as to solve the problems in the above-mentioned background technology that during the installation of concrete columns, longitudinal bars and hoops are needed to support and position the prefabricated parts, which easily lead to lateral drift of longitudinal bars, inability to insert reserved steel bars into the hoop, and the need for manual correction, resulting in difficulties in on-site installation and deviation of longitudinal bars.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a prefabricated concrete column positioned and installed by steel, comprising a concrete base and a concrete column, wherein the upper end of the concrete base is provided with a plurality of plug holes, the upper and lower sides of the concrete column are both penetrated and fixedly connected with a plurality of reserved longitudinal bars, transverse steel bars are arranged and fixedly connected between the plurality of reserved longitudinal bars, and a positioning steel is fixedly connected to the middle of the lower end of the concrete column.

[0006] Preferably, four position-limiting steel bars are fixedly connected in a circular array in the middle of the upper end of the concrete base.

[0007] Preferably, the upper end of the position-limiting steel bar is provided with an inclined surface.

[0008] Preferably, the width of the inner side of the limiting steel bar is the same as the width of the positioning steel.

[0009] Preferably, the plurality of plug holes are fixed around the lower side of the limiting bar.

[0010] Preferably, the multiple reserved longitudinal bars and the multiple insertion holes are inserted and connected in a one-to-one correspondence.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, the positioning steel section at the lower end of the concrete column plays a role of positioning and limiting during the construction process. Aiming at the problems of difficult installation, positioning deviation and transverse drift of steel bars of the current precast column, the positioning steel section enables the overall concrete column to be accurately installed and conveniently connected, avoiding the problem of difficult socket connection of the existing precast column. In addition, the positioning steel section can also bear the vertical load, avoiding the horizontal displacement of the precast column, and further enabling the reserved longitudinal bars at the lower end of the concrete column to be inserted and aligned.

[0013] 2. In the present utility model, four limiting steel bars are fixedly connected in a circumferential array at the middle of the upper end of the concrete base. An inclined surface is provided at the upper end of the limiting steel bar. The width of the inner side surface of the limiting steel bar is the same as the width of the positioning steel section. The multiple insertion holes are fixed around the lower side of the limiting steel bar. Then, during the process of the overall concrete column being displaced downward and inserted, the positioning steel section at the lower end of the concrete column can be directly inserted into the four limiting steel bars. The setting of the inclined surface at the upper end of the limiting steel bar further improves the stability during the insertion of the positioning steel section. The insertion of the positioning steel section and the four limiting steel bars enables the installation of the concrete column to be more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0015] Figure 2 of the present utility model Figure 2 is an enlarged three-dimensional structural view of part A in the present utility model;

[0016] Figure 3 is a structural diagram after the concrete column and the concrete base of the present utility model are inserted;

[0017] Figure 4 of the present utility model Figure 3 is a front sectional view of the structure.

[0018] In the figure: 1. Concrete base; 2. Concrete column; 3. Reserved longitudinal bar; 4. Transverse steel bar; 5. Insertion hole; 6. Limiting steel bar; 7. Positioning steel section; 8. Inclined surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Please refer to Figures 1 to 4 An embodiment provided by the utility model: a precast concrete column using section steel positioning and installation, including a concrete base 1 and a concrete column 2. Both the concrete base 1 and the concrete column 2 are manufactured by mixing and solidifying concrete and steel bars. A plurality of insertion holes 5 are provided through the upper end of the concrete base 1. A plurality of reserved longitudinal bars 3 are fixedly connected through both the upper and lower sides of the concrete column 2. The plurality of reserved longitudinal bars 3 and the plurality of insertion holes 5 are inserted and connected in one-to-one correspondence. A transverse steel bar 4 is fixedly connected between the plurality of reserved longitudinal bars 3. A positioning section steel 7 is fixedly connected to the middle of the lower end of the concrete column 2.

[0021] The overall precast concrete column consists of a concrete column 2, reserved longitudinal bars 3, and a positioning section steel 7. The positioning section steel 7 includes, but is not limited to, open-section steel plates such as angle steel, I-beam, channel steel, and H-section steel. It is preferably inexpensive and easy to manufacture. The positioning section steel 7 can be placed in the middle of the precast column, or on the opposite sides or four corners of the concrete column 2. If a double-axisymmetric cross-section positioning section steel 7 is used, the positioning section steel 7 can be placed at the center of the precast column. If a single-axisymmetric cross-section positioning section steel 7 is used, the positioning section steel 7 needs to be placed on one pair of sides of the precast column. If a positioning section steel 7 with a cross-section such as angle steel without x and y direction symmetry axes is used, the positioning section steel 7 needs to be placed at the four corners of the precast column. All positioning section steels 7 are inside the reserved longitudinal bars 3.

[0022] The positioning section steel 7 is fixedly connected to the concrete column 2. End plates are provided at the ends of the positioning section steel 7 and are provided with bolt holes for connecting upper and lower columns and positioning. Grouting holes are provided on the front and back sides of the concrete column 2, and their sizes can meet the requirements for pouring concrete. One or two exhaust holes are provided on the side of the concrete column 2. The longitudinal steel bars are located around the precast column and meet the requirements of the protective layer thickness. The reserved longitudinal bars 3 have the same length as the positioning section steel 7, and a plurality of reserved longitudinal bars 3 are installed with composite stirrups according to the design requirements.

[0023] First, hoist the concrete column 2 to the designated position. Align the end plate holes on the positioning section steel 7 with the bolts on the end plate of the lower precast column, lower it, and tighten the bolts to achieve fixation. If the positioning section steel 7 is inclined, shims can be used to adjust the verticality of the positioning section steel 7;

[0024] Then, adjust the positions of the reserved longitudinal bars 3 to make the lower reserved longitudinal bars 3 fit the longitudinal bars of the installed precast column. Connection methods such as binding and welding can be used. If no connection is used, both the upper and lower reserved steel bars need to meet the anchorage length respectively and be anchored in the cast-in-place section respectively to achieve fixation;

[0025] Then, the composite stirrup is put in place, and the composite stirrups pre-placed on the concrete column 2 are arranged at the designed spacing to wrap and fix the longitudinal reinforcement. Then, the connecting section is closed with formwork, and concrete is poured through the grouting hole at the top of the precast column. During the pouring process, vibration is carried out through the grouting hole. When the concrete slurry overflows from the exhaust hole, the pouring of concrete is stopped. Finally, it is cured until the specified time, the formwork is removed, and the construction is completed;

[0026] Among them, the positioning steel section 7 at the lower end of the concrete column 2 plays a role of positioning and limiting during the construction process. Aiming at the problems of difficult installation, positioning deviation, and lateral drift of steel bars in current precast columns, the positioning steel section 7 enables the overall concrete column 2 to be accurately installed and conveniently connected, avoiding the problem of difficult socket connection of existing precast columns. In addition, the positioning steel section 7 can also bear the vertical load to prevent the precast column from having horizontal displacement, so that the reserved longitudinal reinforcement 3 at the lower end of the concrete column 2 can be socketed and aligned;

[0027] At the middle of the upper end of the concrete base 1, four limiting steel bars 6 are fixedly connected in a circumferential array. An inclined surface 8 is provided at the upper end of the limiting steel bar 6. The width of the inner side surface of the limiting steel bar 6 is the same as the width of the positioning steel section 7. A plurality of insertion holes 5 are fixed around the lower side of the limiting steel bar 6. During the process of the overall concrete column 2 being displaced and inserted downward, the positioning steel section 7 at the lower end of the concrete column 2 can be directly inserted into the four limiting steel bars 6. The setting of the inclined surface 8 at the upper end of the limiting steel bar 6 further improves the stability during the insertion of the positioning steel section 7. The insertion of the positioning steel section 7 and the four limiting steel bars 6 enables the installation of the concrete column 2 to be more accurate.

[0028] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A prefabricated concrete column positioned and installed using profiled steel, comprising a concrete base (1) and a concrete column (2), characterized in that: The upper end of the concrete base (1) is penetrated by a plurality of plug holes (5); the upper and lower sides of the concrete column (2) are penetrated by a plurality of reserved longitudinal bars (3) and fixedly connected thereto; transverse steel bars (4) are arranged and fixedly connected between the plurality of reserved longitudinal bars (3); and a positioning steel (7) is fixedly connected to the middle of the lower end of the concrete column (2).

2. The prefabricated concrete column positioned and installed by using profiled steel according to claim 1, characterized in that: Four position-limiting steel bars (6) are fixedly connected in a circular array in the middle of the upper end of the concrete base (1).

3. The prefabricated concrete column positioned and installed by using profiled steel according to claim 2, characterized in that: The upper end of the position-limiting steel bar (6) is provided with an inclined surface (8).

4. The prefabricated concrete column positioned and installed by using profiled steel according to claim 3, characterized in that: The width of the inner side surface of the position-limiting steel bar (6) is the same as the width of the positioning steel (7).

5. The prefabricated concrete column positioned and installed by using profiled steel according to claim 1, characterized in that: The plurality of insertion holes (5) are fixed around the lower side of the limiting steel bar (6).

6. The prefabricated concrete column positioned and installed by using profiled steel according to claim 5, characterized in that: The plurality of reserved longitudinal ribs (3) and the plurality of plug-in holes (5) are plug-connected in a one-to-one correspondence.

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