Two-layer prefabricated concrete frame capable of being continuously constructed

Abstract

The utility model discloses a two-layer prefabricated concrete frame capable of being continuously constructed. The two-layer prefabricated concrete frame comprises frame columns, frame beams and frame plates. The frame columns and the frame beams are arranged in a crossed mode, and the frame plates are arranged on the top surfaces of the frame beams. The frame beams comprise the first frame beam and the second frame beam, and the first frame beam and the second frame beam are arranged on the two opposite sides of the frame column respectively. A plurality of horizontal longitudinal bar perforation channels and joint bars are arranged in the frame column; a steel bar sleeve connector is arranged at one end, close to the frame column, of the first frame beam; one end of a connecting longitudinal bar penetrates through the longitudinal bar perforation channel and is connected with the steel bar sleeve connector, and the other end of the connecting longitudinal bar is fixed through an anchoring nut; an anchoring part is arranged above the end, close to the frame column, of the second frame beam and fixedly connected with the joint bars. The fabricated frame can effectively solve the problems that an existing fabricated frame is long in construction period and poor in economical efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated building fittings, and particularly relates to a two - layer precast concrete frame capable of continuous construction. Background Technique

[0002] The prefabricated reinforced concrete structure is a concrete structure mainly composed of precast components assembled and connected. The prefabricated reinforced concrete structure is one of the important directions for the development of building structures in China. It is conducive to the development of China's building industrialization, improves production efficiency, saves energy, develops green and environmental - friendly buildings, and is conducive to improving and ensuring the quality of construction projects. Compared with the in - situ construction method, the prefabricated structure is conducive to green construction because prefabricated construction better meets the requirements of green construction such as land saving, energy saving, material saving, water saving and environmental protection, reduces the negative impact on the environment, including reducing noise, preventing dust, reducing environmental pollution, clean transportation, reducing site interference, saving resources and energy such as water, electricity and materials, and follows the principle of sustainable development.

[0003] For the existing prefabricated reinforced concrete frame structure, it needs to be constructed layer by layer successively. After one layer is installed, it is necessary to wait for the joint concrete to reach a certain strength before the next layer can be constructed. At the same time, it is necessary to install a tower crane to hoist precast components, and the waiting time is long, the construction organization is difficult, and the economy is not good. Although the existing technology has considered making the precast frame into a continuously - constructible structure to solve the problem of long construction period, for the simultaneous construction of two - layer precast frames, there are still the following key technical problems:

[0004] 1. How to ensure the reliability of the temporary connection of the lower - layer beam - column joints and the stability of the frame while the upper - layer is being constructed.

[0005] 2. How to carry out the post - pouring of the precast component connection joints after all are installed, and at the same time ensure the temporary stability of the frame before the secondary pouring.

[0006] 3. How to complete all hoisting work only by using a truck crane, so as to save the cost and construction period of the tower crane.

[0007] Therefore, there is an urgent need for a two - layer precast concrete frame capable of continuous construction with a fast construction period and good economy. Content of the Utility Model

[0008] In view of the problems existing in the above - mentioned prior art, the utility model provides a two - layer precast concrete frame capable of continuous construction, aiming to solve the problems of long construction period and poor economy of the existing prefabricated frame. To achieve the above object, the utility model provides the following technical solutions:

[0009] A two - layer precast concrete frame capable of continuous construction, comprising frame columns, frame beams and frame slabs; the frame columns and the frame beams are arranged in a cross - shaped intersection, and the frame slabs are arranged on the top surfaces of the frame beams; the frame beams include a first frame beam and a second frame beam, and the first frame beam and the second frame beam are respectively arranged on opposite sides of the frame columns;

[0010] A number of horizontally arranged longitudinal - bar perforation channels and inserted bars are provided in the frame columns;

[0011] One end of the first frame beam close to the frame column is provided with a steel - bar sleeve connector; one end of the connecting longitudinal bar passes through the longitudinal - bar perforation channel and is connected to the steel - bar sleeve connector, and the other end is fixed by an anchor nut;

[0012] An anchor is provided above one end of the second frame beam close to the frame column, and the anchor is fixedly connected to the inserted bar.

[0013] Further, a second support is provided on the frame column and the second support is located below the second frame beam, and the second support is used to support the second frame beam.

[0014] Further, a fixed baffle is provided below one end of the second frame beam close to the frame column, and the fixed baffle is fixedly welded to the second support.

[0015] Further, a number of horizontally arranged longitudinal bars of the second frame beam are provided in the second frame beam, and the longitudinal bars of the second frame beam are welded to the connecting longitudinal bars.

[0016] Further, a number of horizontally arranged longitudinal bars of the first frame beam are provided in the first frame beam, and the longitudinal bars of the first frame beam are fixedly connected to the steel - bar sleeve connector.

[0017] Further, a first support is provided on the frame column and the first support is located below the first frame beam, and the first support is used to support the first frame beam.

[0018] Further, the frame columns are in the shape of a cuboid extending in the vertical direction, and the frame beams are in the shape of a cuboid extending in the horizontal direction.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. The present utility model discloses a two - layer precast concrete frame capable of continuous construction. After all the frame columns, beams and slabs are installed, the secondary pouring of the beam - column - slab joints is carried out. By adopting a specific construction sequence, all the hoisting work can be completed only by using a truck crane, saving the construction period, and the construction organization is economical and flexible.

[0021] 2. The prefabricated two - layer precast concrete frame disclosed by the present utility model is simple in factory prefabrication, convenient for component transportation, fast in construction period, and all hoisting work can be completed only by a truck crane, with good economic benefits; the product meets the policy requirements of national energy conservation, emission reduction, building industrialization and building assembly, has good social and economic benefits, and has a good market prospect. Brief Description of the Drawings

[0022] Figure 1 is a side view of the frame beam - column joint area of a two - layer precast concrete frame capable of continuous construction provided by the present utility model;

[0023] Figure 2 is a top view of the frame beam - column joint area of a two - layer precast concrete frame capable of continuous construction provided by the present utility model;

[0024] Figure 3 is an overall schematic diagram of a two - layer precast concrete frame capable of continuous construction provided by the present utility model;

[0025] Figure 4 is a construction flow chart of a two - layer precast concrete frame capable of continuous construction provided by the present utility model;

[0026] In the drawings: 1, frame column; 2, frame beam; 3, frame slab; 4, first frame beam; 5, second frame beam; 6, longitudinal reinforcement perforation channel; 7, inserted reinforcement; 8, reinforcing bar sleeve connector; 9, connecting longitudinal reinforcement; 10, anchoring nut; 11, anchor; 12, second support; 13, fixed baffle; 14, longitudinal reinforcement of the second frame beam; 15, longitudinal reinforcement of the first frame beam; 16, first support. Detailed Description of the Preferred Embodiments

[0027] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments, but the present utility model is not limited to the following embodiments.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] In the description of the present utility model, the "first feature", "second feature" may include one or more of such features.

[0030] In the description of the present utility model, the meaning of "a plurality of" is two or more than two.

[0031] In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0032] In the description of the present utility model, the first feature being "above", "over" and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0033] In the description of this specification, the description of reference terms such as "an embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0034] Embodiment 1:

[0035] See attached Figures 1 to 4 . The present utility model discloses a two - layer precast concrete frame that can be continuously constructed. As Figure 1 shown, it includes frame columns 1, frame beams 2 and frame slabs 3. The frame columns 1 and the frame beams 2 are arranged in a cross - shaped intersection, and the frame slabs 3 are arranged on the top surfaces of the frame beams 2. Among them, the frame beam 2 includes a first frame beam 4 and a second frame beam 5, and the first frame beam 4 and the second frame beam 5 are respectively arranged on opposite sides of the frame column 1.

[0036] The specific way of installing the first frame beam 4 on the frame column 1 is as follows: A number of horizontally arranged longitudinal bar perforation channels 6 are provided in the frame column 1, and a steel bar sleeve connector 8 is provided at one end of the first frame beam 4 close to the frame column 1; One end of the connecting longitudinal bar 9 passes through the longitudinal bar perforation channel 6 and is connected to the steel bar sleeve connector 8, and the other end is anchored by an anchoring nut 10, so that the frame can be constructed and temporarily fixed on both sides simultaneously for two layers before secondary grouting at the node.

[0037] The specific way of installing the second frame beam 5 on the frame column 1 is as follows: There are several horizontally arranged inserted bars 7 in the frame column 1. An anchor 11 is provided above one end of the second frame beam 5 close to the frame column 1, and the anchor 11 and the inserted bar 7 are fixedly connected by welding. The inserted bars 7 embedded in the frame column 1 are connected to the anchors 11 embedded in the second frame beam 5 and prestressed to ensure that the tensile force on the upper part of the second frame beam 5 can be effectively transmitted.

[0038] A two-layer precast concrete frame that can be continuously constructed disclosed by the present utility model can enable the frame to be constructed unilaterally and temporarily fixed before the secondary grouting of the joints, leaving space for the vehicle passage; at the same time, it ensures that the subsequent second frame beam 5 can be smoothly installed and guarantees the stability of the entire frame before the joints are not secondarily cast.

[0039] Embodiment 2:

[0040] See Appendix Figures 1 to 4 On the basis of Embodiment 1, in this embodiment, a second support 12 is provided on the frame column 1 and the second support 12 is located below the second frame beam 5, and the second support 12 is used to support the second frame beam 5. Specifically, a fixed baffle 13 is provided below one end of the second frame beam 5 close to the frame column 1, and the fixed baffle 13 and the second support 12 are fixedly connected by welding. The second support 12 is welded to the stiffening rib of the fixed baffle 13 embedded in the frame beam 2, ensuring that the pressure on the lower part of the frame beam 2 can be effectively transmitted. The welding connection between the anchor 11 and the inserted bar 7 and the welding connection between the second support 12 and the fixed baffle 13 together ensure that the subsequent second frame beam 5 can be smoothly installed and the stability of the entire frame before the joints are not secondarily cast.

[0041] In this embodiment, several horizontally arranged second frame beam longitudinal bars 14 are provided in the second frame beam 5, and the second frame beam longitudinal bars 14 are welded to the connecting longitudinal bars 9. After all the frames are installed, the connecting longitudinal bars 9 of the frame column 1 at the joints are welded to the second frame beam longitudinal bars 14 to improve the stability of the overall frame.

[0042] In this embodiment, several horizontally arranged first frame beam longitudinal bars 15 are provided in the first frame beam 4, and the first frame beam longitudinal bars 15 are fixedly connected to the steel bar sleeve connector 8. The steel bar sleeve connector 8 is preset in the first frame beam 4, and the fixation of the steel bar sleeve connector 8 can be achieved by welding the steel bar sleeve connector 8 and the first frame beam longitudinal bars 15. The steel bar sleeve connector 8 and the first frame beam longitudinal bars 15 can be fixed before the prefabrication of the first frame beam 4 and embedded in the concrete of the first frame beam 4.

[0043] In this embodiment, a first support 16 is provided on the frame column 1 and the first support 16 is located below the first frame beam 4, and the first support 16 is used to support the first frame beam 4.

[0044] In this embodiment, as Figure 1 , Figure 2 and Figure 3 shown, preferably, the frame column 1 is in the shape of a cuboid extending in the vertical direction, and the frame beam 2 is in the shape of a cuboid extending in the horizontal direction.

[0045] The construction process of the two-story precast concrete frame that can be continuously constructed provided by the present utility model is as follows:

[0046] As Figure 4 shown, taking a 6X6-span two-story precast concrete frame as an example, first, the truck crane enters the 1# truck crane passage, and constructs the frame columns 1 on the a, b, c, and d axes. After the frame columns 1 are installed on the foundation and the post-cast concrete at the column feet reaches a certain strength, the frame beams 2 between the a~b axes and the c~d axes are installed. Among them, the installation process of the frame beam 2 is as follows: first, place the first frame beam 4 on the first support 16 of the first floor. The shear key groove at the beam end of the first frame beam 4 is closely attached to the shear key groove of the frame column. Then, pass the connecting longitudinal reinforcement 9 in the joint area through the longitudinal reinforcement perforation channel 6 reserved on the frame column 1 and connect it to the steel bar sleeve connector 8. Then, install the anchor nut 10 and gasket on the other side of the frame column 1 and spot-weld them; after the first frame beam 4 on the first floor is fixed, install the first frame beam 4 on the second floor in the same way, and then hoist the frame slab 3. The truck crane installs them in sequence from the A axis to the G axis.

[0047] After installing to the G axis, the truck crane installs the second frame beam 5 between the b~c axes from the G axis to the A axis. First, place the second frame beam 5 on the second support 12 of the first floor. Leave a certain operating gap between the beam end of the second frame beam 5 and the side of the frame column 1. Weld the fixed baffle 13 embedded at the beam end of the second frame beam 5 to the second support 12 to resist the pressure in the concrete compression zone. Then, pass the inserted reinforcement 7 reserved on the frame column 1 through the anchor 11 embedded on the second frame beam 5, apply a certain prestress and fix it with a nut to transfer the tensile force at the upper end of the beam. Finally, construct the second frame beam 5 on the second floor according to the aforementioned method and hoist the frame slab 3.

[0048] After all the frames are installed, weld the connecting longitudinal reinforcement 9 of the frame column 1 at the joint to the longitudinal reinforcement of the second frame beam 5, and use the post-cast material to pressure-grout the beam-column joint area of the whole structure and the frame slab 3.

[0049] If there are several cranes that can complete the frame installation of the d~g axes at the 2# truck crane walking passage at the same time, and so on.

[0050] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A two - layer precast concrete frame capable of continuous construction, characterized in that: It includes frame columns (1), frame beams (2) and frame slabs (3); the frame columns (1) and the frame beams (2) are arranged in a cross shape, and the frame slab (3) is arranged on the top surface of the frame beam (2); the frame beam (2) includes a first frame beam (4) and a second frame beam (5), and the first frame beam (4) and the second frame beam (5) are respectively arranged on opposite sides of the frame column (1); A number of horizontally arranged longitudinal bar perforation channels (6) and inserted bars (7) are provided in the frame column (1); One end of the first frame beam (4) close to the frame column (1) is provided with a reinforcing bar sleeve connector (8); one end of a connecting longitudinal bar (9) passes through the longitudinal bar perforation channel (6) and is connected to the reinforcing bar sleeve connector (8), and the other end is fixed by an anchoring nut (10); An anchor (11) is provided above one end of the second frame beam (5) close to the frame column (1), and the anchor (11) is fixedly connected to the inserted bar (7).

2. A two - layer precast concrete frame capable of continuous construction according to claim 1, characterized in that: A second support (12) is provided on the frame column (1) and the second support (12) is located below the second frame beam (5), and the second support (12) is used to support the second frame beam (5).

3. A two - layer precast concrete frame capable of continuous construction according to claim 2, characterized in that: A fixed baffle (13) is provided below one end of the second frame beam (5) close to the frame column (1), and the fixed baffle (13) is fixedly welded to the second support (12).

4. A two - layer precast concrete frame capable of continuous construction according to claim 1, characterized in that: A number of horizontally arranged second frame beam longitudinal bars (14) are provided in the second frame beam (5), and the second frame beam longitudinal bars (14) are welded to the connecting longitudinal bar (9).

5. A two - layer precast concrete frame capable of continuous construction according to claim 1, characterized in that: A number of horizontally arranged first frame beam longitudinal bars (15) are provided in the first frame beam (4), and the first frame beam longitudinal bars (15) are fixedly connected to the reinforcing bar sleeve connector (8).

6. A two - layer precast concrete frame capable of continuous construction according to claim 1, characterized in that: A first support (16) is provided on the frame column (1) and the first support (16) is located below the first frame beam (4), and the first support (16) is used to support the first frame beam (4).

7. A two-layer precast concrete frame capable of continuous construction according to claim 1, characterized in that: The frame column (1) is in the shape of a cuboid extending in the vertical direction, and the frame beam (2) is in the shape of a cuboid extending in the horizontal direction.

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