Partially prestressed concrete prefabricated multi-section composite column

Abstract

The utility model discloses a partially prestressed concrete prefabricated multi-section composite column, which relates to the technical field of concrete columns and comprises a prefabricated concrete column body and full-length steel bars. A laminated cavity is formed in each prefabricated concrete column in the length direction of the prefabricated concrete column in a penetrating mode, the multiple sections of prefabricated concrete columns are connected in series to form the laminated column, and a beam-column joint is formed between any two adjacent prefabricated concrete columns. The full-length steel bars comprise prestressed steel bars and non-prestressed steel bars, and the multiple full-length steel bars are arranged in the composite column in a penetrating mode and arranged in the circumferential direction of the prefabricated concrete column body in a surrounding mode. The multi-layer column can be produced and formed at a time, and steel bar connection does not need to be conducted on each layer; the anti-seismic requirement and the mechanical property requirement of the component are met by adopting a pre-stressed steel bar and non-pre-stressed steel bar mixed reinforcement mode; the steel bars at the joints are full-length main steel bars of the column body, breakage and joints are avoided, and the overall mechanical property of the column body is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete column technical field especially relates to a kind of partial prestressed concrete prefabricated multi-section composite column. BACKGROUND

[0002] The existing assembly type prefabricated concrete column is mostly single-section single-layer column, which is a non-prestressed structure, and the node adopts the form of inserting secondary pouring or grouting sleeve grout anchor link.

[0003] However, compared with cast-in-place concrete, such concrete column still has problems such as difficult installation, low efficiency of manual binding of reinforcement, and complex node scheme, which leads to no obvious advantage in actual construction period. SUMMARY

[0004] To solve the above technical problems, the utility model provides a kind of partial prestressed concrete prefabricated multi-section composite column, and the specific technical scheme is:

[0005] A kind of partial prestressed concrete prefabricated multi-section composite column, comprising:

[0006] The prefabricated concrete column body is multiple, the prefabricated concrete column body is provided with a composite cavity along its length direction, and the multiple prefabricated concrete column bodies are connected in series to form a composite column, and a beam-column joint is formed between any two adjacent prefabricated concrete column bodies.

[0007] The through reinforcement is multiple, including prestressed reinforcement and non-prestressed reinforcement, and the multiple through reinforcements are arranged in the composite column and are arranged circumferentially around the prefabricated concrete column body.

[0008] Preferably, the prefabricated concrete column body is formed by concrete centrifugal compaction.

[0009] Preferably, the prestressed reinforcement is prestressed by the pretensioning method.

[0010] Preferably, the multiple prefabricated concrete column bodies are arranged at intervals, and the beam-column joint is formed at the interval.

[0011] Preferably:

[0012] The cross section of the prefabricated concrete column body is rectangular;

[0013] The cross section of the composite cavity is circular.

[0014] Preferably, the number of prestressed reinforcement and non-prestressed reinforcement is consistent.

[0015] Preferably:

[0016] The prestressed steel bars are arranged at the four corner portions of the prefabricated concrete column body, and the non-prestressed steel bars are arranged at the edge line portions of the prefabricated concrete column body.

[0017] Or the prestressed steel bars are arranged at the edge line portions of the prefabricated concrete column body, and the non-prestressed steel bars are arranged at the four corner portions of the prefabricated concrete column body.

[0018] Preferably, the number of the prestressed steel bars is an integer multiple of 4.

[0019] The prefabricated multi-section composite column with partial prestress provided by the utility model has the following beneficial effects:

[0020] 1. The multi-layer column is formed in one-off production, can be provided with through steel bars, and does not need to connect steel bars at each layer, thereby greatly improving the speed and reliability of column-column connection and structural safety.

[0021] 2. The mixed arrangement of prestressed steel bars and non-prestressed steel bars solves the problems of component seismic demand and mechanical performance requirement, and the problem of high cost of traditional prefabricated column reinforcement, and can greatly save direct cost.

[0022] 3. The steel bars at the joint are through main steel bars of the column body, without joints, thereby greatly improving the overall mechanical performance of the column body, avoiding the unreliable situation of traditional sleeve connection and grout anchor connection, and eliminating the need for column steel bar connection joint detection steps. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments in the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0024] Figure 1 The front view of the prefabricated multi-section composite column with partial prestress provided by the embodiment of the utility model;

[0025] Figure 2 The sectional view of the prefabricated concrete column body provided by the embodiment of the utility model.

[0026] REFERENCE NUMERALS

[0027] 1-prefabricated concrete column body; 11-composite cavity; 12-beam-column joint;

[0028] 2-through steel bar; 21-prestressed steel bar; 22-non-prestressed steel bar. DETAILED DESCRIPTION

[0029] In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be described in detail below with reference to the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0030] It should be noted that similar reference numerals refer to similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0031] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provision", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Please refer to Figure 1 and Figure 2 The present embodiment provides a kind of partial prestressed concrete prefabricated multi-section composite column, including prefabricated concrete column 1 and through length reinforcing bar 2.

[0035] The number of prefabricated concrete column 1 is multi-section, and the composite cavity 11 is provided along the length direction on the prefabricated concrete column 1, and the multi-section prefabricated concrete column 1 is connected in series to form a composite column, and the beam-column joint 12 is formed between any two adjacent prefabricated concrete column 1.

[0036] The number of the through steel bars 2, including prestressed steel bars 21 and non-prestressed steel bars 22, is multiple, and the multiple through steel bars 2 are arranged in the composite column and circumferentially arranged around the prefabricated concrete column body 1.

[0037] The forming of the composite column specifically includes the steps of steel bar cage binding, mold entering, mold closing, material laying, concrete compaction, curing, mold releasing, and finished product detection. The multiple-section column is formed at one time, the beam-column joint section is reserved, the traditional one-column-one-layer mode is abandoned, the one-column-multi-layer (multiple-section column) mode is adopted, the prefabricated concrete column is produced, the two-layer-to-multi-layer integral column is integrally produced at one time, the beam-column joint section between each layer is reserved for integral post-casting of the beam-column joint, the multiple-layer column can be produced and installed at one time, the prestressed and non-prestressed mixed reinforcement is adopted, the partial prestress form is adopted, the seismic demand and mechanical property requirement of the component are solved, and the problem of high cost of traditional prefabricated column reinforcement is solved; the cavity composite form is adopted, the component has light self-weight, and the beam-column plate secondary composite layer is integrally poured to meet the rigidity demand of the building.

[0038] The partial prestress concrete prefabricated multiple-section composite column provided by the embodiment has the following beneficial effects:

[0039] 1. The multiple-layer column is integrally produced at one time, the through steel bars can be arranged, and the steel bar connection of each layer is not needed, so that the speed and reliability of the column-column connection and the structural safety are greatly improved.

[0040] 2. The prestressed steel bars and the non-prestressed steel bars are mixedly arranged, the seismic demand and mechanical property requirement of the component are solved, the problem of high cost of traditional prefabricated column reinforcement is solved, and the direct cost is greatly saved.

[0041] 3. The steel bars at the joint are the column through main bars without interruption and joint, the integral mechanical property of the column body is greatly improved, the unreliable situation of traditional sleeve connection and grout-anchor connection is avoided, and the column steel bar connection joint detection step is omitted.

[0042] Further, the prefabricated concrete column body 1 is formed by concrete centrifugal compaction, which is simple and efficient. The concrete centrifugal compaction is a conventional technical means in the field, and thus the embodiment is not described in detail.

[0043] Further, the prestressed steel bars 21 are prestressed by the pretensioning method, and the seismic demand and mechanical property requirement of the component are solved.

[0044] Further, the multiple-section prefabricated concrete column body 1 is arranged at intervals, the beam-column joints 12 are formed at the intervals, the beam-column joint section between each layer is reserved for integral post-casting of the beam-column joint. The prestress is applied by the pretensioning method, which is a conventional technical means in the field, and thus the embodiment is not described in detail.

[0045] Further, the precast concrete column 1 is rectangular in cross section, and the superimposed cavity 11 is circular in cross section, and the superimposed cavity makes the component light in weight.

[0046] Further, the number of the prestressed steel bars 21 and the non-prestressed steel bars 22 is consistent.

[0047] Further, referring to Figure 2 , the prestressed steel bars 21 are arranged at the four corner portions of the precast concrete column 1, and the non-prestressed steel bars 22 are arranged at the edge line portions of the precast concrete column 1, so that the seismic demand and the mechanical performance requirement of the component are balanced; or the prestressed steel bars 21 are arranged at the edge line portions of the precast concrete column 1, and the non-prestressed steel bars 22 are arranged at the four corner portions of the precast concrete column 1.

[0048] Further, the number of the prestressed steel bars 21 is an integer multiple of 4.

[0049] Principle description:

[0050] The forming of the superimposed column specifically includes the steps of binding of the steel cage, entering the mold, closing the mold, material distribution, compaction of the concrete, curing, demolding, finished product detection, etc. The multi-section column is formed at one time, the beam-column joint section is reserved, and the traditional one column per floor mode is abandoned, and the one column multi-floor (multi-section column) form is adopted, the precast concrete column is produced, i.e. the two-layer to multi-layer integral column is integrally produced at one time, the beam-column joint section between each layer is reserved for integral post-pouring of the beam-column joint, and the multi-layer column can be produced and installed at one time; the prestressed and non-prestressed mixed reinforcement is adopted in the form of partial prestress, which not only solves the seismic demand and the mechanical performance requirement of the component, but also solves the problem of high cost of traditional precast column reinforcement; the cavity superimposed form is adopted, the component is light in weight, and the beam-column plate secondary superimposed layer is integrally poured, so as to meet the stiffness requirement of the building.

[0051] It should be noted that in this text, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0052] The principle and implementation mode of the present application are described by using specific examples herein, and the above example is only used for helping to understand the method and core idea of the present application. The above is only the preferred implementation mode of the present application, and it should be pointed out that, due to the limited nature of the expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, without departing from the principle of the present application, some improvements, decorations or changes can be made, and the above technical features can be combined in an appropriate manner; the improvements, decorations, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A partially prestressed concrete prefabricated multi-section composite column, characterized in that, The utility model relates to a kind of prefabricated concrete multi-section composite column, including: A prefabricated concrete column (1) is provided with a composite cavity (11) along its length direction, and a plurality of prefabricated concrete columns (1) are connected to form a composite column, and a beam-column joint (12) is formed between any two adjacent prefabricated concrete columns (1); A plurality of through steel bars (2) are arranged in the composite column, including prestressed steel bars (21) and non-prestressed steel bars (22).

2. The partially prestressed concrete precast multi-section composite column according to claim 1, characterized in that, The prefabricated concrete column (1) is formed by concrete centrifugal compaction.

3. The partially prestressed concrete precast multi-section composite column according to claim 1, characterized in that, The prestressed steel bars (21) are prestressed by pretensioning method.

4. The partially prestressed concrete precast multi-section composite column according to claim 1, characterized in that, The plurality of prefabricated concrete columns (1) are arranged at intervals, and the beam-column joint (12) is formed at the interval.

5. The prefabricated concrete multi-section composite column according to any one of claims 1 to 4, wherein: The prefabricated concrete column (1) is rectangular in cross section. The composite cavity (11) is circular in cross section.

6. The partially prestressed concrete precast multi-section composite column according to claim 5, characterized in that, The number of prestressed steel bars (21) and non-prestressed steel bars (22) is consistent.

7. The prefabricated concrete multi-section composite column according to claim 6, wherein: The prestressed steel bars (21) are arranged at the corners of the prefabricated concrete column (1), and the non-prestressed steel bars (22) are arranged at the edges of the prefabricated concrete column (1). Or the prestressed steel bars (21) are arranged at the edges of the prefabricated concrete column (1), and the non-prestressed steel bars (22) are arranged at the corners of the prefabricated concrete column (1).

8. The partially prestressed concrete precast multi-section composite column according to claim 7, characterized in that, The number of prestressed steel bars (21) is an integer multiple of 4.

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