Beam-column connecting structure of composite reinforcement type prestressed concrete frame

Abstract

The utility model discloses a beam-column connecting structure of a composite reinforcement type prestressed concrete frame, which comprises a precast concrete frame column and a precast concrete frame beam connected with the precast concrete frame column, and the precast concrete frame column is provided with a column composite reinforcement hole channel. The prefabricated concrete frame beam is provided with beam composite steel bar hole channels matched with the column composite steel bar hole channels. The first reinforcing steel bar and the second reinforcing steel bar are simultaneously arranged in the column composite reinforcing steel bar hole channel and the beam composite reinforcing steel bar hole channel; the anchor bearing plate is arranged at the end, away from the prefabricated concrete frame column, of the beam composite steel bar hole channel, the anchor bearing plate is a double-hole steel plate, and the double-hole steel plate is in one-to-one correspondence with the first steel bars and the second steel bars; the first steel bar and the second steel bar penetrate through one end of the double-hole steel plate and are anchored through an anchorage device, wet operation of only needing a small amount of joint grouting and hole channel grouting in a construction site is achieved, and the purposes of being high in prefabrication assembly rate, controllable in construction quality and high in construction efficiency are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated buildings, and in particular to a beam-column connection structure of a composite reinforced prestressed concrete frame. Background Art

[0002] In prefabricated building structures, the connection structure and connection method of prefabricated beam-column nodes have a crucial impact on their seismic performance and construction efficiency.

[0003] In the existing construction technology of prefabricated concrete frame structures, beam-column connections are mostly cast-in-place. This method has a low construction efficiency due to the large amount of wet work on site and complex construction process. In addition, the traditional beam-column connection points are weakly supported, resulting in concrete crushing and steel bar buckling, and poor seismic performance. Summary of the invention

[0004] The embodiments of the present specification provide a beam-column connection structure of a composite reinforced prestressed concrete frame, which is used to solve the problems of low construction efficiency and seismic resistance in the prior art.

[0005] The technical solutions provided by the embodiments of this specification are:

[0006] The embodiment of the present application provides a beam-column connection structure of a composite reinforced prestressed concrete frame, comprising:

[0007] Precast concrete frame columns and precast concrete frame beams connected to the precast concrete frame columns, the precast concrete frame columns are provided with column composite steel bar holes, and the precast concrete frame beams are provided with beam composite steel bar holes matching the column composite steel bar holes;

[0008] The first steel bar and the second steel bar are simultaneously arranged in the column composite steel bar channel and the beam composite steel bar channel;

[0009] An anchor plate is arranged at one end of the composite steel bar channel of the beam away from the precast concrete frame column. The anchor plate is a double-hole steel plate, and the double-hole steel plate corresponds to the first steel bar and the second steel bar one by one.

[0010] Furthermore, the first steel bar is a prestressed precision-rolled threaded steel bar.

[0011] Furthermore, the second steel bar is an ordinary steel bar.

[0012] Furthermore, the column composite steel bar duct and the beam composite steel bar duct are connected via a composite steel bar duct connecting pipe.

[0013] Furthermore, the connection between the column composite steel bar channel and the beam composite steel bar channel is bonded and fixed by joint grouting material.

[0014] Furthermore, the joint grouting material is fine stone concrete or non-shrinkage fiber mortar.

[0015] Furthermore, the column composite steel bar holes and the beam composite steel bar holes are provided with hole grouting material.

[0016] Furthermore, the duct grouting material is prestressed duct grouting material.

[0017] Furthermore, a groove matching the anchor plate is provided at the end of the composite steel bar hole of the beam.

[0018] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects: Double steel bars are inserted into the channel as the load-bearing steel passing through the beam-column node, providing shear and bending bearing capacity of the beam-column joint, while improving the seismic ductility of the node, so that the cross-section of the beam-column joint meets the requirements of the prestressed strength ratio of the joint. The double-hole steel plate not only plays the role of the anchor plate of the prestressed fine-rolled threaded steel bar, but also plays the role of positioning the prestressed fine-rolled threaded steel bar and ordinary steel bar, thereby improving the installation efficiency. At the same time, all prefabricated components are processed in the factory, so that only a small amount of wet work of joint grouting and channel grouting is required at the construction site, which has the purposes of high prefabrication and assembly rate, controllable construction quality, and high construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the precast concrete frame column structure provided in an embodiment of this specification.

[0021] Figure 2 This is a schematic diagram of the precast concrete frame beam structure provided in the embodiments of this specification.

[0022] Figure 3 This is a schematic diagram of the AA cross-sectional structure provided in the embodiments of this specification.

[0023] Figure 4 This is a schematic diagram of the connection status structure provided in the embodiments of this specification. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0025] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0026] The embodiment of this specification provides a beam-column connection structure of a composite reinforced prestressed concrete frame, see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, including:

[0027] A precast concrete frame column 1 and a precast concrete frame beam 2 connected to the precast concrete frame column 1, wherein the precast concrete frame column 1 is provided with a column composite steel bar channel 12, and the precast concrete frame beam 2 is provided with a beam composite steel bar channel 24 matching the column composite steel bar channel 12. It should be noted that the precast concrete frame column 1 is also provided with a column prestressed steel strand channel 11; the precast concrete frame beam is provided with a beam prestressed steel strand channel 23, and the column prestressed steel strand channel 11 matches the beam prestressed steel strand channel 23. The precast concrete frame beam 2 is a horizontally arranged variable cross-section beam, with rectangular cross-section sections 21 at both ends and an I-section section 22 in the middle of the span, the beam prestressed steel strand channel is opened through the length direction of the precast concrete frame beam body, and the beam composite steel bar channel 24 is opened through the rectangular cross-section section 21.

[0028] The first steel bar and the second steel bar are arranged in the column composite steel bar channel 12 and the beam composite steel bar channel 24 at the same time; in a possible implementation, the first steel bar is a prestressed fine-rolled threaded steel bar, and the second steel bar is an ordinary steel bar. The prestressed steel strand 5 is passed through the column prestressed steel strand channel and the beam prestressed steel strand channel that are connected through, and the prestressed fine-rolled threaded steel bar 4 and the ordinary steel bar 6 are passed through the column composite steel bar channel and the beam composite steel bar channel that are connected through, and the prestressed steel strand and the prestressed fine-rolled threaded steel bar are tensioned and fixed at the end of the channel by a prestressed fine-rolled threaded steel bar anchor.

[0029] An anchor plate 7 is arranged at one end of the composite steel bar channel 24 of the beam away from the precast concrete frame column. The anchor plate is a double-hole steel plate, and the double-hole steel plate corresponds to the first steel bar and the second steel bar one by one; the first steel bar and the second steel bar pass through one end of the double-hole steel plate and are anchored by an anchor. The composite steel bar channel of the column and the composite steel bar channel of the beam are connected by a composite steel bar channel connecting pipe. The connection between the composite steel bar channel of the column and the composite steel bar channel of the beam is bonded and fixed by joint grouting material. The joint grouting material is fine stone concrete or non-shrinkage fiber mortar. Channel grouting material is provided in the composite steel bar channel of the column and the composite steel bar channel of the beam. The channel grouting material is prestressed channel grouting material. A slot 8 matching the anchor plate 7 is provided at the end of the composite steel bar channel 24 of the beam. It is used to fix the anchor plate 7.

[0030] This embodiment can install double steel bars in the channel as the load-bearing steel passing through the beam-column node, provide the shear and bending bearing capacity of the beam-column joint, and at the same time improve the seismic ductility of the node, so that the cross-section of the beam-column joint meets the requirements of the prestressed strength ratio of the joint. The double-hole steel plate not only plays the role of the anchor plate of the prestressed fine-rolled threaded steel bar, but also plays the role of positioning the prestressed fine-rolled threaded steel bar and ordinary steel bar, improving the installation efficiency. At the same time, all prefabricated components are processed in the factory, and only a small amount of wet work of joint grouting and channel grouting is required at the construction site, which has the purposes of high prefabrication and assembly rate, controllable construction quality, and high construction efficiency.

[0031] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0032] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A beam-column connection structure of a composite reinforced prestressed concrete frame, characterized in that: include: Precast concrete frame columns and precast concrete frame beams connected to the precast concrete frame columns, the precast concrete frame columns are provided with column composite steel bar holes, and the precast concrete frame beams are provided with beam composite steel bar holes matching the column composite steel bar holes; The first steel bar and the second steel bar are simultaneously arranged in the column composite steel bar hole and the beam composite steel bar hole; An anchor plate is arranged at one end of the composite steel bar channel of the beam away from the precast concrete frame column. The anchor plate is a double-hole steel plate, and the double-hole steel plate corresponds to the first steel bar and the second steel bar one by one. The first steel bar and the second steel bar pass through one end of the double-hole steel plate and are anchored by an anchor.

2. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 1, characterized in that: The first steel bar is a prestressed precision-rolled threaded steel bar.

3. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 1, characterized in that: The second steel bar is an ordinary steel bar.

4. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 1, characterized in that: The column composite steel bar channel and the beam composite steel bar channel are connected via a composite steel bar channel connecting pipe.

5. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 4, characterized in that: The connection between the column composite steel bar channel and the beam composite steel bar channel is bonded and fixed by joint grouting material.

6. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 5, characterized in that: The joint grouting material is fine stone concrete or non-shrinkage fiber mortar.

7. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 1, characterized in that: The column composite steel bar holes and the beam composite steel bar holes are provided with hole grouting material.

8. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 7, characterized in that: The pore grouting material is a prestressed pore grouting material.

9. The beam-column connection structure of a composite reinforced prestressed concrete frame according to claim 1, characterized in that: The end of the composite steel bar channel of the beam is provided with a slot matching the anchor plate.

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