Connecting joint of secondary box type steel beam and main box type steel column and construction method

Abstract

The invention relates to the technical field of steel structure construction, in particular to a connecting joint of a secondary box type steel beam and a main box type steel column and a construction method.The connecting joint comprises the main box type steel column and the secondary box type steel beam, and short box type steel beams are arranged on the periphery of the main box type steel column and connected with the secondary box type steel beam; and step-shaped notches are formed in the joints of the short box-shaped steel beams and the secondary box-shaped steel beams correspondingly, and the two notches are oppositely arranged and can be in coupling butt joint with each other. The secondary box-type steel beam and the short box-type steel beam are in butt joint through cooperation of the two notch structures and are temporarily fixed through the positioning clamping plates, hoisting equipment can be put into next production without waiting for complete welding, the lifting efficiency is improved, and the construction period is effectively shortened.

Description

Background Art

[0001] The invention relates to the technical field of steel structure construction, and in particular to a connection node between a secondary box-shaped steel beam and a main box-shaped steel column and a construction method. Background Art

[0002] With the rapid growth of my country's economy, the construction industry has achieved remarkable development. Steel structures play a vital role in the transformation and upgrading of the construction industry due to their significant advantages such as light weight, superior seismic performance, easy industrial production of components and short construction period.

[0003] However, with the continuous advancement of production technology, the complexity of building structures has also increased, which has brought new challenges to structural forms. In particular, the box-type steel beam section is increasingly widely used in structures because it can meet the requirements of large spans and some special design space requirements. Therefore, how to achieve a fast and convenient connection between box-type steel beams and box-type steel columns has become a key technical problem that designers and on-site construction producers need to solve urgently.

[0004] At present, in the field of steel structures, the connection between box-type steel beams and steel columns is generally done by on-site welding. Although this method can achieve the positioning between steel beams and steel columns, it has high requirements on the technical level of mechanical equipment and workers at the construction site, and is easily disturbed by the external environment. At the same time, since cranes can only be used for the next step of construction after all welding work is completed, this limits the improvement of construction speed to a certain extent. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a connection node and a construction method for a secondary box-type steel beam and a main box-type steel column, so as to achieve the technical effect that the secondary box-type steel beam and the main box-type steel beam can be quickly connected, and the lifting equipment does not need to wait for all welding to be completed before leaving the site.

[0006] To achieve this technical purpose, the present invention adopts the following scheme: A connection node between a secondary box-shaped steel beam and a main box-shaped steel column comprises a main box-shaped steel column and a secondary box-shaped steel beam. Short box-shaped steel beams are arranged around the main box-shaped steel column. The short box-shaped steel beams are connected to the secondary box-shaped steel beams. Step-shaped notches are arranged at the connection between the short box-shaped steel beams and the secondary box-shaped steel beams. The two notches are arranged in opposite directions and can be coupled and butted with each other.

[0007] Compared with the prior art, the present invention has the following beneficial effects: The present invention connects the secondary box-shaped steel beam and the short box-shaped steel beam through the cooperation of two notch structures, and temporarily fixes them through positioning clamps, so that the secondary box-shaped steel beam and the short box-shaped steel beam can be coupled and self-locked. The lifting equipment does not need to wait for all welding to be completed before it can be put into the next step of production, thereby improving the lifting efficiency and effectively shortening the construction period.

[0008] Further, the preferred embodiment adopted by the present invention is: It also includes a positioning card plate, one end of which is fixed to the top of the secondary box-shaped steel beam, and the other end of which is connected to the top of the short box-shaped steel beam.

[0009] The ends of the notches of the short box-shaped steel beam and the secondary box-shaped steel beam are respectively arranged to be flush.

[0010] The end of the notch of the short box-shaped steel beam is provided with a tooth-shaped offset first, and the end of the notch on the secondary box-shaped steel beam is provided with an offset second adapted to the offset first. The short box-shaped steel beam is butt-jointed with the secondary box-shaped steel beam through the butt joint of the offset first and the offset second.

[0011] A welding hole is arranged at the butt joint between the secondary box-shaped steel beam and the short box-shaped steel beam corresponding to the lower bottom of the positioning clamp.

[0012] A first stiffening plate is vertically arranged inside the short box-shaped steel beam, and a plurality of second stiffening plates are vertically arranged inside the secondary box-shaped steel beam.

[0013] A number of transverse partitions are arranged at intervals along the height direction inside the main box-shaped steel column.

[0014] The present invention also relates to a construction method for a connection node between a secondary box-shaped steel beam and a main box-shaped steel column, the specific contents of which are as follows: S1. During the factory processing and manufacturing stage, the short box-shaped steel beams are welded to the main box-shaped steel columns according to the drawings; S2. Weld the positioning plate to the top of the short box-shaped steel beam according to the installation drawing, and open a welding hole on the positioning plate; S3, welding the first stiffening plate and the second stiffening plate to corresponding positions respectively; S4, transporting the main box-shaped steel column and the secondary box-shaped steel beam with the welded short box-shaped steel beam to the construction site, then fixing the main box-shaped steel column, lifting the secondary box-shaped steel beam, and making the notch of the secondary box-shaped steel beam butt-coupled with the notch of the short box-shaped steel beam; S5. Weld the hanging end of the positioning card plate to the top of the secondary box-shaped steel beam; S6. Remove the hook of the crane, release the hook from lifting the secondary box-shaped steel beam, and use the crane to lift the next box-shaped steel beam; S7. Weld the secondary box-shaped steel beam and the short box-shaped steel beam. After welding, conduct inspection. If the inspection is qualified, the construction work of the node at this position is completed.

[0015] This method proposes a method of adding a short box-shaped steel beam to the main box-shaped steel column. The short box-shaped steel beam is connected to the secondary box-shaped steel beam and temporarily fixed. The lifting equipment does not need to wait for all welding to be completed and can be immediately put into the next production, which significantly improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 sectional view of Figure 3 It is a structural schematic diagram in which the notches of the secondary box-shaped steel beam and the short box-shaped steel beam are aligned; Figure 4 It is a structural schematic diagram of the secondary box-shaped steel beam and the short box-shaped steel beam having notches with tooth-shaped staggered openings; Figure 5 It is a schematic cross-sectional view of a secondary box steel beam and a short box steel beam; The markings in the figure are: 1. Main box-type steel column; 2. Short box-type steel beam; 3. Secondary box-type steel beam; 4. Positioning clamp; 401. Through-weld hole; 5. First stiffening plate; 6. Second stiffening plate; 7. Transverse partition; 8. Notch; 801. Alignment; 802. Offset one; 803. Offset two; 9. Upper flange plate; 10. Lower flange plate; 11. Web plate. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0018] A connection node between a secondary box-type steel beam and a main box-type steel column is mainly composed of a main box-type steel column 1 and a secondary box-type steel beam 3. Short box-type steel beams 2 are respectively arranged around the main box-type steel column 1. One end of each short box-type steel beam 2 is fixedly connected to the main box-type steel column 1, and the other end of the short box-type steel beam 2 is connected to the secondary box-type steel beam 3.

[0019] The short box-shaped steel beam 2 and the secondary box-shaped steel beam 3 are respectively provided with stepped notches 8 at their connection points, and the two notches 8 are arranged in opposite directions and can be coupled and butted with each other.

[0020] The top of the secondary box-shaped steel beam 3 is welded to one end of the positioning clamp 4, and the other end of the positioning clamp 4 is welded to the short box-shaped steel beam 2. The positioning clamp 4 is used for temporary fixation of the secondary box-shaped steel beam 3 and the short box-shaped steel beam 2.

[0021] A welding hole 401 is provided at the bottom of the positioning clamping plate 4 corresponding to the butt joint position of the secondary box-shaped steel beam 3 and the short box-shaped steel beam 2 to ensure the welding of the butt joint weld.

[0022] In this embodiment, the loading conditions of the secondary box-shaped steel beam 3 are divided into two types: static load and dynamic load. When the secondary box-shaped steel beam 3 is subjected to static load, the upper and lower ends of the notches 8 of the short box-shaped steel beam 2 and the secondary box-shaped steel beam 3 are respectively set to be flush with each other 801; when the secondary box-shaped steel beam 3 is subjected to dynamic load, the upper and lower ends of the notch 8 of the short box-shaped steel beam 2 are respectively provided with a toothed staggered mouth 1 802, and the upper and lower ends of the notch 8 of the secondary box-shaped steel beam 3 are respectively provided with a toothed staggered mouth 2 803, the staggered mouth 1 802 and the staggered mouth 2 803 are adapted to each other, and the short box-shaped steel beam 2 is butt-jointed with the secondary box-shaped steel beam 3 through the butt-jointed staggered mouth 1 802 and the staggered mouth 2 803.

[0023] The short box steel beam 2 and the secondary box steel beam 3 are welded by upper flange plate 9, lower flange plate 10 and web plates 11 on both sides, and the cross-sectional dimensions of the short box steel beam 2 are the same as those of the secondary box steel beam 3. In order to improve the strength of the short box steel beam 2, the secondary box steel beam 3 and the main box steel column 1, a plurality of vertical first stiffening plates 5 are arranged at intervals inside the short box steel beam 2, and a plurality of vertical second stiffening plates 6 are arranged at intervals inside the secondary box steel beam 3. A plurality of transverse partitions 7 are arranged at intervals inside the main box steel column 1 along the axial direction of the steel column.

[0024] The thickness of the first stiffening plate 5, the second stiffening plate 6 and the transverse diaphragm 7 is not less than the thickness of the web plates to which they are connected.

[0025] Based on the above connection nodes, the specific steps during construction are as follows: S1. During the processing and manufacturing stage, the short box-shaped steel beam 2 is welded to the main box-shaped steel column 1 according to the drawings. During welding, the short box-shaped steel beam 2 and the main box-shaped steel column 1 are accurately positioned.

[0026] S2. Weld the positioning clamp plate 4 to the top of the short box-shaped steel beam 2 according to the installation drawing, and open a welding hole 401 below the positioning clamp plate 4. The welding hole 401 is placed above the interface between the short box-shaped steel beam 2 and the secondary box-shaped steel beam 3.

[0027] S3, welding the first stiffening plate 5, the second stiffening plate 6 and the transverse partition plate 7 to corresponding positions respectively.

[0028] S4. The main box-shaped steel column 1 and the secondary box-shaped steel beam 3 with welded short box-shaped steel beam 2 are transported to the construction site. According to the load condition of the secondary box-shaped steel beam 3 required to be connected at the construction site, the end of the short box-shaped steel beam 2 is made into a flush mouth 801 or a tooth-shaped staggered mouth; then the main box-shaped steel column 1 is fixed, and then the secondary box-shaped steel beam 3 is lifted, so that the notch 8 of the secondary box-shaped steel beam 3 is butt-coupled with the notch 8 of the short box-shaped steel beam 2.

[0029] S5. Weld the secondary box-shaped steel beam 3 to the positioning clamping plate 4, and temporarily fix the secondary box-shaped steel beam 3 and the short box-shaped steel beam 2 by using the positioning clamping plate 4.

[0030] S6. Remove the hook of the crane, release the hook from lifting the secondary box-shaped steel beam 3, and use the crane to lift the next box-shaped steel beam 3.

[0031] S7, welding the secondary box-shaped steel beam 3 and the short box-shaped steel beam 2, and after welding, conducting inspection, and completing the construction work of the node at this position after passing the inspection.

[0032] The present invention adds a section of short box-shaped steel beam on the main box-shaped steel column. According to the stress state of the structure, the ends of the short box-shaped steel beam and the secondary box-shaped steel beam are designed to be matched in two different forms, which is convenient for node docking and can meet the load requirements. During the construction process, the short box-shaped steel beam and the secondary box-shaped steel beam are temporarily fixed by positioning clamps, which shortens the hoisting time of the hoisting equipment and effectively reduces the construction cost. During the construction process, all connections are made by welding, which not only improves the reliability of the connection, but also ensures the smooth transmission inside.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A connection node between a secondary box-shaped steel beam and a main box-shaped steel column, comprising a main box-shaped steel column and a secondary box-shaped steel beam, characterized in that: Short box-shaped steel beams are arranged around the main box-shaped steel columns, which are connected to the secondary box-shaped steel beams. Step-shaped notches are arranged at the connection between the short box-shaped steel beams and the secondary box-shaped steel beams, and the two notches are arranged in opposite directions and can be coupled and butted with each other.

2. The connection node between the secondary box-shaped steel beam and the main box-shaped steel column according to claim 1 is characterized in that: It also includes a positioning card plate, one end of which is fixed to the top of the secondary box-shaped steel beam, and the other end of which is connected to the top of the short box-shaped steel beam.

3. The connection node between the secondary box-shaped steel beam and the main box-shaped steel column according to claim 2 is characterized in that: The ends of the notches of the short box-shaped steel beam and the secondary box-shaped steel beam are respectively arranged to be flush.

4. The connection node between the secondary box-shaped steel beam and the main box-shaped steel column according to claim 2 is characterized in that: The end of the notch of the short box-shaped steel beam is provided with a tooth-shaped offset first, and the end of the notch on the secondary box-shaped steel beam is provided with an offset second adapted to the offset first. The short box-shaped steel beam is butt-jointed with the secondary box-shaped steel beam through the butt joint of the offset first and the offset second.

5. The connection node between the secondary box-shaped steel beam and the main box-shaped steel column according to claim 4 is characterized in that: A welding hole is arranged at the butt joint between the secondary box-shaped steel beam and the short box-shaped steel beam corresponding to the lower bottom of the positioning clamp.

6. The connection node between the secondary box-shaped steel beam and the main box-shaped steel column according to claim 1 is characterized in that: A first stiffening plate is vertically arranged inside the short box-shaped steel beam, and a plurality of second stiffening plates are vertically arranged inside the secondary box-shaped steel beam.

7. The connection node between the secondary box-shaped steel beam and the main box-shaped steel column according to claim 1 is characterized in that: A number of transverse partitions are arranged at intervals along the height direction inside the main box-shaped steel column.

8. A construction method for a connection node between a secondary box-shaped steel beam and a main box-shaped steel column, characterized in that: It is mainly used for the construction of the connection node between the secondary box-shaped steel beam and the main box-shaped steel column as described in any one of claims 1 to 7, and the specific contents are as follows: S1. During the factory processing and manufacturing stage, the short box-shaped steel beams are welded to the main box-shaped steel columns according to the drawings; S2. Weld the positioning plate to the top of the short box-shaped steel beam according to the installation drawing, and open a welding hole on the positioning plate; S3, welding the first stiffening plate and the second stiffening plate to corresponding positions respectively; S4, transporting the main box-shaped steel column and the secondary box-shaped steel beam with the welded short box-shaped steel beam to the construction site, then fixing the main box-shaped steel column, lifting the secondary box-shaped steel beam, and making the notch of the secondary box-shaped steel beam butt-coupled with the notch of the short box-shaped steel beam; S5. Weld the hanging end of the positioning card plate to the top of the secondary box-shaped steel beam; S6. Remove the hook of the crane, release the hook from lifting the secondary box-shaped steel beam, and use the crane to lift the next box-shaped steel beam; S7. Weld the secondary box-shaped steel beam and the short box-shaped steel beam. After welding, conduct inspection. If the inspection is qualified, the construction work of the node at this position is completed.

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