Steel column transfer joint structure and construction method thereof

Abstract

The application discloses a novel steel column conversion node structure and a construction method thereof. The conversion node structure is located between a lower steel column and an upper steel column. The lower steel column comprises a first cross-shaped stiff steel column and a reinforced concrete structure which is poured outside the first cross-shaped stiff steel column. The first cross-shaped stiff steel column extends upwards out of the reinforced concrete structure and forms an extension section. The conversion node structure comprises: a first sleeve pipe which is sleeved outside the outer periphery of the extension section, and a first cavity is formed between the first sleeve pipe and the extension section; a sealing plate for mounting the upper steel column, the sealing plate is arranged on the top of the first sleeve pipe, and a grouting hole for grouting into the first cavity is formed in the sealing plate. The conversion node structure improves the connection strength of the node.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, and in particular to a steel column conversion node structure and a construction method thereof. BACKGROUND

[0002] In the process of structural design and construction, the lower part is often a concrete structure or a steel-concrete structure, and the upper part is a steel structure, such as the conversion from the lower stand to the steel roof of a stadium, the conversion from the roof structure layer to the tower crown of a super high-rise building, etc. The common conversion structure is to set a steel embedded part on the top of the lower concrete structure or steel-concrete structure. The connection node of this conversion mode has poor strength, and the connection requirement for the steel embedded part is great. When the load of the upper steel structure is large, the concrete structure or the concrete on the steel-concrete structure of the lower part is easily broken, which affects the appearance and the node connection is not reliable. SUMMARY

[0003] The present application aims to overcome the defects of the prior art and provide a steel column conversion node structure and a construction method thereof. A first cross-shaped stiff steel column is arranged in the lower steel column and extends into the conversion node structure. In addition, the lower steel column and the conversion node structure are connected to form a whole by grouting in the first cavity, thereby improving the connection strength of the node.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is a steel column conversion node structure. The conversion node structure is located between a lower steel column and an upper steel column. The lower steel column comprises a first cross-shaped stiff steel column and a reinforced concrete structure poured outside the first cross-shaped stiff steel column. The first cross-shaped stiff steel column extends out of the reinforced concrete structure and forms an extension section. The conversion node structure comprises:

[0005] a first sleeve pipe sleeved on the outer periphery of the extension section, and a first cavity is formed between the first sleeve pipe and the extension section;

[0006] a sealing plate for mounting the upper steel column, the sealing plate being arranged on the top of the first sleeve pipe, and a grouting hole for grouting into the first cavity being arranged on the sealing plate.

[0007] The steel column conversion node structure is further improved in that the bottom of the first cross-shaped stiff steel column is connected to the ground through a connecting piece.

[0008] The steel column conversion node structure is further improved in that a transition section is further connected between the sealing plate and the first sleeve pipe. The transition section comprises:

[0009] a second cross-shaped stiff steel column, which is located at the top end of the first cross-shaped stiff steel column and is coaxially connected with the first cross-shaped stiff steel column;

[0010] A second sleeve is sleeved on the outer periphery of the second cross-shaped steel column, a second cavity is formed between the second sleeve and the second cross-shaped steel column, the second cavity is communicated with the first cavity, and the sealing plate is connected to the top of the second sleeve.

[0011] Further improvement of the steel column conversion node structure is that the first sleeve comprises four arc-shaped plates, the four arc-shaped plates are respectively connected between adjacent two flange plates of the extension section and surround to form the first sleeve, the first sleeve has the same inner and outer diameters as the second sleeve, the bottom end of the first sleeve is supported on the reinforced concrete structure, and the top end is connected with the second sleeve.

[0012] Further improvement of the steel column conversion node structure is that the lower steel column further comprises a plurality of lap plates for the lap joint of the transverse steel bars of the concrete beam, the plurality of lap plates are arranged at the design height of the concrete beam and are connected at intervals on the outer periphery of the first cross-shaped steel column, a plurality of first steel bar penetrating holes for the transverse steel bars of the concrete beam to pass through are arranged at intervals on the first cross-shaped steel column, and a plurality of second steel bar penetrating holes for the main steel bars of the reinforced concrete structure to pass through are arranged at intervals on the lap plates.

[0013] Further improvement of the steel column conversion node structure is that the outer periphery of the first cross-shaped steel column, the outer periphery of the second cross-shaped steel column, the inner periphery of the first sleeve and the inner periphery of the second sleeve are all connected with studs.

[0014] Further improvement of the steel column conversion node structure is that the upper steel column comprises a third sleeve and concrete filled in the third sleeve, the third sleeve has the same inner and outer diameters as the second sleeve, and the third sleeve is coaxially connected with the second sleeve.

[0015] Further improvement of the steel column conversion node structure is that the upper steel column and the opposite outer sides of the adapter section are connected with a plurality of reinforcing structures at intervals, and the reinforcing structure comprises:

[0016] A first ear plate is connected to the outer side of the second sleeve.

[0017] A second ear plate is connected to the outer side of the third sleeve and vertically opposite to the first ear plate.

[0018] A connecting plate is connected between the first ear plate and the second ear plate through bolts at both ends of the connecting plate.

[0019] A construction method of a steel column conversion node structure comprises the following steps:

[0020] Step 1: providing the steel column conversion node structure described above.

[0021] Step 2: after the lower steel column is constructed, the first sleeve is sleeved on the outer periphery of the extension section;

[0022] Step 3: the sealing plate is connected to the top of the first sleeve and grouting is injected into the first cavity through the grouting hole;

[0023] Step 4: the upper steel column is connected to the top of the sealing plate.

[0024] Compared with the prior art, the advantages of the present application are that:

[0025] By arranging the first cross-shaped rigid steel column in the lower steel column and extending into the conversion node structure, and additionally grouting in the first cavity to connect the lower steel column and the conversion node structure to form a whole, the connection strength of the node is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Fig. 1 Figure 1 is a connection diagram of the first sleeve and the extension section of the steel column conversion node structure of the present application.

[0028] Fig. 2 Figure 2 is a connection diagram of the arc-shaped plate of the steel column conversion node structure of the present application.

[0029] Fig. 3 Figure 3 is a connection diagram of the adapter section and the upper steel column of the steel column conversion node structure of the present application.

[0030] Fig. 4 Figure 4 is a connection diagram of the adapter section and the first sleeve of the steel column conversion node structure of the present application.

[0031] In the figure: 1, first cross-shaped rigid steel column; 2, extension section; 3, arc-shaped plate; 4, stud; 5, lap plate; 6, second through-hole; 7, first through-hole; 8, adapter section; 801, second cross-shaped rigid steel column; 802, second sleeve; 9, third sleeve; 10, reinforcing structure; 11, sealing plate; 12, grouting hole. DETAILED DESCRIPTION

[0032] Following, the embodiments of the present application are illustrated by specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present specification. The present application can also be implemented or applied by other different embodiments, and various modifications or changes can be made to the details in the present specification based on different views and applications without departing from the spirit of the present application.

[0033] The steel column conversion node structure and the construction method thereof of the present application are further described in detail below in combination with the drawings and specific embodiments.

[0034] Please refer to Figs. 1-4 As shown in the drawings, the steel column conversion node structure is located between a lower steel column and an upper steel column. The lower steel column comprises a first cross-shaped steel column 1 and a reinforced concrete structure casted outside the first cross-shaped steel column 1. The first cross-shaped steel column 1 extends out of the reinforced concrete structure and forms an extension section 2. The conversion node structure comprises:

[0035] a first sleeve pipe sleeved outside the extension section 2, a first cavity being formed between the first sleeve pipe and the extension section 2;

[0036] a sealing plate 11 for mounting the upper steel column, the sealing plate 11 being arranged on top of the first sleeve pipe, and a grouting hole 12 being formed in the sealing plate 11 for grouting into the first cavity.

[0037] Preferably, the bottom of the first cross-shaped steel column 1 is connected to the ground by a connecting piece.

[0038] Specifically, the connecting piece is a foundation bolt, and an anchoring plate is connected to the bottom of the first cross-shaped steel column 1. The anchoring plate is provided with connecting holes spaced apart for the foundation bolt to pass through.

[0039] The first cross-shaped steel column 1 is connected to the ground by the foundation bolt, thereby strengthening the support stability of the first cross-shaped steel column 1.

[0040] Preferably, a conversion section 8 is further connected between the sealing plate 11 and the first sleeve pipe. The conversion section 8 comprises:

[0041] a second cross-shaped steel column 801 coaxially connected to the top end of the first cross-shaped steel column 1;

[0042] a second sleeve pipe 802 sleeved outside the second cross-shaped steel column 801, a second cavity being formed between the second sleeve pipe 802 and the second cross-shaped steel column 801, the second cavity being in communication with the first cavity, and the sealing plate 11 being connected to the top of the second sleeve pipe 802.

[0043] Specifically, the adapter section 8 is prefabricated in the factory.

[0044] Specifically, when the length of the extension section 2 does not meet the design requirements, the adapter section 8 needs to be additionally connected.

[0045] When the adapter section 8 is not set, the first sleeve and the third sleeve 9 are directly connected to form a first sleeve whole, and the first sleeve whole is poured with concrete. At this time, the length of the first cross-shaped steel column 1 anchored into the first sleeve whole directly affects the connection stability of the upper steel column and the lower steel column. Therefore, when the extension section 2 does not meet the design requirements, the adapter section 8 needs to be added to lengthen the anchoring length, so that the first cross-shaped steel column 1 and the second cross-shaped steel column 801 form a cross-shaped steel column whole, and the first sleeve, the second sleeve 802 and the third sleeve 9 form a second sleeve 802 whole. At this time, the length of the cross-shaped steel column whole anchored into the second sleeve 802 whole meets the connection requirements.

[0046] Preferably, the first sleeve includes four arc-shaped plates 3, and the four arc-shaped plates 3 are respectively connected between adjacent two flange plates of the extension section 2 and are arranged to form the first sleeve. The first sleeve has the same inner and outer diameters as the second sleeve 802. The bottom end of the first sleeve is supported on the reinforced concrete structure, and the top end is connected with the second sleeve 802.

[0047] Specifically, the arc-shaped plate 3 is welded and fixed with the flange plate of the extension section 2.

[0048] Since the adapter section 8 is prefabricated in the factory, when it is needed to connect the adapter section 8 with the extension section 2, there is not enough installation space, and installation is difficult. Therefore, the first sleeve is arranged as four arc-shaped plates 3. When it is needed to install the adapter section 8, the first sleeve is not installed first, the second cross-shaped steel column 801 of the adapter section 8 is fully welded and fixed with the extension section 2, and then the four arc-shaped plates 3 are installed in place to form the first sleeve. The above installation method provides installation space for the adapter section 8 and improves construction efficiency.

[0049] Preferably, the lower steel column further includes a plurality of lap plates 5 for the transverse steel bars of the concrete beam to lap, and the plurality of lap plates 5 are arranged at the design height of the concrete beam and are spaced apart and connected to the outer periphery of the first cross-shaped steel column 1. A plurality of first bar penetrating holes 7 are spaced apart and arranged on the first cross-shaped steel column 1 for the transverse steel bars of the concrete beam to pass through. A plurality of second bar penetrating holes 6 are spaced apart and arranged on the lap plate 5 for the main bars of the reinforced concrete structure to pass through.

[0050] By arranging the lap plate 5, an installation basis is provided for the connection of the concrete beam and the lower steel column. By arranging the first bar penetrating hole 7 and the second bar penetrating hole 6, the connection stability is further improved.

[0051] Preferably, the outer periphery of the first cross-shaped steel column 1, the outer periphery of the second cross-shaped steel column 801, the inner periphery of the first sleeve, and the inner periphery of the second sleeve 802 are connected with the dowel 4.

[0052] By setting the dowel 4, after pouring concrete, the connection effect of the first cross-shaped steel column 1 and the reinforced concrete structure is strengthened, the connection effect of the extension section 2 and the first sleeve is strengthened, and the connection effect of the second cross-shaped steel column 801 and the second sleeve 802 is strengthened.

[0053] Preferably, the upper steel column comprises a third sleeve 9 and concrete poured in the third sleeve 9, the third sleeve 9 has the same inner and outer diameters as the second sleeve 802, and the third sleeve 9 is coaxially connected with the second sleeve 802.

[0054] Preferably, the upper steel column and the opposite outer side of the adapter section 8 are connected with a plurality of reinforcing structures 10, the reinforcing structure 10 comprises:

[0055] a first ear plate connected to the outer side of the second sleeve;

[0056] a second ear plate connected to the outer side of the third sleeve and vertically opposite to the first ear plate;

[0057] a connecting plate, both ends of the connecting plate are connected with the first ear plate and the second ear plate through bolts.

[0058] A construction method of a steel column conversion node structure, comprising the steps of:

[0059] Step 1: providing the steel column conversion node structure described above;

[0060] Step 2: after the lower steel column is constructed, the first sleeve is sleeved on the outer periphery of the extension section 2;

[0061] Step 3: connecting the sealing plate 11 to the top of the first sleeve and grouting into the first cavity through the grouting hole 12;

[0062] Step 4: connecting the upper steel column to the top of the sealing plate 11.

[0063] It needs to be explained that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the defined conditions that the present application can be implemented, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the present application can produce, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" and the like in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application, the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the scope of the present application.

[0064] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present application, without departing from the content of the technical solution of the present application, still falls within the scope of the technical solution of the present application.

Claims

1. A steel column transfer node configuration, characterized by, The steel column conversion node structure is located between a lower steel column and an upper steel column, the lower steel column comprises a first cross-shaped steel column and a reinforced concrete structure casted outside the first cross-shaped steel column, the first cross-shaped steel column extends out of the reinforced concrete structure and forms an extension section, the steel column conversion node structure comprises: a first sleeve pipe sleeved on the outer periphery of the extension section, a first cavity is formed between the first sleeve pipe and the extension section; a sealing plate for mounting the upper steel column, the sealing plate is provided with a grouting hole for grouting into the first cavity; an adapter section connected between the sealing plate and the first sleeve pipe, the adapter section comprises: a second cross-shaped steel column, the second cross-shaped steel column is located at the top end of the first cross-shaped steel column and coaxially connected with the first cross-shaped steel column; a second sleeve pipe sleeved on the outer periphery of the second cross-shaped steel column, a second cavity is formed between the second sleeve pipe and the second cross-shaped steel column, the second cavity is communicated with the first cavity, the sealing plate is connected to the top of the second sleeve pipe, the first sleeve pipe comprises four arc-shaped plates, the four arc-shaped plates are respectively connected between the adjacent two flange plates of the extension section and surround to form the first sleeve pipe, the inner and outer diameters of the first sleeve pipe and the second sleeve pipe are the same, the bottom end of the first sleeve pipe is supported on the reinforced concrete structure, and the top end is connected with the second sleeve pipe.

2. The steel column transfer node configuration of claim 1, wherein, The bottom of the first cross-shaped steel column is connected to the ground through a connecting piece.

3. The steel column transfer node configuration of claim 1, wherein, The lower steel column further comprises a plurality of lap plates for the transverse steel bars of the concrete beam to lap, the plurality of lap plates are arranged at the design height of the concrete beam and are spaced apart and connected to the outer periphery of the first cross-shaped steel column, a plurality of first steel bar penetrating holes for the transverse steel bars of the concrete beam to pass through are spaced apart and arranged on the first cross-shaped steel column, and a plurality of second steel bar penetrating holes for the main steel bars of the reinforced concrete structure to pass through are spaced apart and arranged on the lap plates.

4. The steel column transfer node configuration of claim 1, wherein, The outer periphery of the first cross-shaped steel column, the outer periphery of the second cross-shaped steel column, the inner periphery of the first sleeve pipe and the inner periphery of the second sleeve pipe are all connected with studs.

5. The steel column transfer node configuration of claim 1, wherein, The upper steel column comprises a third sleeve pipe and concrete poured into the third sleeve pipe, the inner and outer diameters of the third sleeve pipe and the second sleeve pipe are the same, and the third sleeve pipe is coaxially connected with the second sleeve pipe.

6. The steel column transfer node configuration of claim 5, wherein, A plurality of reinforcing structures are spaced apart and connected to the opposite outer sides of the upper steel column and the adapter section, the reinforcing structure comprises: a first ear plate connected to the outer side of the second sleeve pipe; a second ear plate connected to the outer side of the third sleeve pipe and vertically opposite to the first ear plate; a connecting plate, both ends of the connecting plate are connected between the first ear plate and the second ear plate through bolts.

7. A construction method of a steel column transfer node configuration, characterized by, The method comprises the following steps: Step 1: providing the steel column conversion node structure as claimed in claim 1; Step 2: sleeving the first sleeve pipe on the outer periphery of the extension section after the lower steel column is constructed; Step 3: connecting the sealing plate to the top of the second sleeve pipe and grouting into the first cavity through the grouting hole; Step 4: connecting the upper steel column to the top of the sealing plate.

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