CN117005616A - Flexible steel columns integrated with building structures and installation methods thereof - Google Patents

Abstract

The invention relates to a flexible steel column integrated with building structures and an installation method thereof. It belongs to the technical field of steel structures and consists of a truss I, a truss II, a truss III and a truss IV. The truss I and the truss II, the truss II and the Steel castings are provided between truss III, truss III and truss IV, and between truss IV and truss I. The upper parts of truss I, truss II, truss III and truss IV are connected and fixed through steel castings. The truss I The lower ends of truss II, truss III and truss IV are all equipped with embedded parts, which are connected and fixed with the concrete structure. It has the characteristics of compact structure, strong plasticity, high construction precision and fast installation. The upper main structure and the steel columns are connected through the supplementary section rods to realize the transmission of force. The entire structure is divided into several hoisting sections and pre-assembled in the workshop. The hoisting sections are installed and welded in sequence on site, which reduces the time for on-site construction and installation.

Description

Flexible steel columns integrated with building structures and installation methods thereof

Technical field

The invention relates to the technical field of steel structures, and in particular to a flexible steel column integrated with a building structure and an installation method thereof.

Background technique

The conventional pipe truss support frame uses a regular four-corner truss structure as the stress support system during the installation process, which is a temporary construction measure. The main function of steel columns with regular cross-sections, such as single cylinders and square columns, is the transmission of force. Regular cross-section forms are often used in design, which cannot meet the modeling requirements of the building structure. The tube truss structure has the characteristics of stable stress performance, good economic effect, and beautiful appearance. It is often used in roof projects such as large venues, but it is relatively rare as a steel column support structure.

Contents of the invention

The present invention mainly solves the deficiencies in the existing technology and provides a flexible steel column integrated with the building structure and an installation method thereof, which has the characteristics of compact structure, strong plasticity, high construction accuracy and fast installation. The upper main structure and the steel columns are connected through the supplementary section rods to realize the transmission of force. The entire structure is divided into several hoisting sections and pre-assembled in the workshop. The hoisting sections are installed and welded in sequence on site, which reduces the time for on-site construction and installation.

The above technical problems of the present invention are mainly solved through the following technical solutions:

A flexible steel column integrated with the building structure, including a truss I, a truss II, a truss III and a truss IV. The truss I and the truss II, the truss II and the truss III, the truss III and the truss IV, and the truss IV and the truss IV. Steel castings are installed between truss I. The upper parts of truss I, truss II, truss III and truss IV are connected and fixed through steel castings. The lower ends of truss I, truss II, truss III and truss IV are all equipped with steel castings. Embedded parts are used to connect and fix the concrete structure. According to different modeling requirements, steel columns are combined with different numbers of trusses.

Preferably, the steel column composed of truss I, truss II, truss III and truss IV is divided into 40 lifting sections, namely section 1 to section 20, and each section is a pair.

Preferably, the upper ends of the truss I, truss II, truss III and truss IV are connected to the upper structure using complementary rods.

Preferably, the truss I, truss II, truss III and truss IV are all composed of upper chord rods, lower chord rods and web rods. When the distance between the upper chord rods and the lower chord forming rods is close, a steel plate is provided, and the steel plate is used to realize the alignment of the upper chord rods. Connected to the cavity of the lower chord.

The upper chord, lower chord and web are round tubes. Depending on the composition of different specifications, box-shaped and H-shaped cross-sections are also possible. Therefore, box-shaped and H-shaped cross-sections are alternatives.

An installation method of flexible steel columns integrated with building structures, including the following steps:

The first step: the hoisting section is assembled in the workshop. Truss I, truss II, truss III and truss IV each have 10 hoisting sections.

When the hoisting section is assembled in the workshop, take three points 1, 6, and 25 among the center end points of the two adjacent lower chords to determine the local coordinate plane as the tire frame installation horizontal plane in the workshop. Use this coordinate system to calculate the other chord end points 7 and 13. , 14, 19, 20 and the positioning coordinate information of each node.

Step 2: Setting and unloading of support frames to facilitate correction and temporary fixation during installation of steel columns. Set corresponding temporary support frames along the lifting staging points of steel columns, a total of 24 groups.

Step 3: The hoisting section is assembled on site. Use a truck crane to lift the hoisting section symmetrically from bottom to bottom. When the hoisting section is hoisted to 200mm above the position, the machine will stop and stabilize. After the temporary support frame below is adjusted in place, use short columns to temporarily Fix the lifting section; the butt ends of the upper and lower chords are connected and fixed with double plywood, and then the welding work at the butt positions is carried out.

Step 4: Monitor the construction process. Use a laser total station to locate the docking points on site. Measure after positioning. Measure after assembling the first frame. Measure after installing the 4 hoisting sections. Finally, proceed after the entire structure is completed. Review; when there is a large deviation between the measured spatial position and the theoretical value, adjustments should be made in time.

As an option, the hoisting section collects the workshop assembly coordinate information of each hoisting section through software. After passing the pre-assembly acceptance in the workshop, it is transported to the site and the hoisting section is assembled on site.

As a preferred option, the installation height of the temporary support frame K is divided into three levels; the first and second support frames are installed in place on the steel columns and are unloaded and dismantled before being connected to the upper body; the third support frame is installed after the upper body system is completed After the steel columns and the upper body are connected in place, they are symmetrically removed in batches.

The present invention can achieve the following effects:

The invention provides a flexible steel column integrated with the building structure and an installation method thereof. Compared with the existing technology, the invention has the characteristics of compact structure, strong plasticity, high construction accuracy and fast installation. The upper main structure and the steel columns are connected through the supplementary section rods to realize the transmission of force. The entire structure is divided into several hoisting sections and pre-assembled in the workshop. The hoisting sections are installed and welded in sequence on site, which reduces the time for on-site construction and installation.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic diagram of the hoisting segmented structure of the present invention.

Figure 3 is a schematic diagram of the assembly structure of the hoisting section of the present invention.

Figure 4 is a coordinate diagram of the assembly nodes of the hoisting section of the present invention.

Figure 5 is a schematic view of the position and structure of the temporary support frame of the present invention.

Figure 6 is a schematic structural diagram of the automobile hoisting device of the present invention.

Figure 7 is a schematic structural diagram of the present invention that is temporarily fixed after being installed in place.

Figure 8 is a schematic structural diagram of the double splint fixation of the present invention.

In the picture: truss IA, truss IIB, truss IIIC, truss IVD, embedded parts E, repair rods F, steel castings G, steel plates H, short columns J, temporary support frames K, double plywood M.

Detailed ways

The technical solution of the invention will be further described in detail below through examples and in conjunction with the accompanying drawings.

Embodiment: As shown in Figure 1-8, a flexible steel column integrated with the building structure consists of a truss IA, a truss IIB, a truss IIIC and a truss IVD. The truss IA and the truss IIB, the truss IIB and the truss IIIC and the truss IIIC Steel castings G are installed between truss IVD and between truss IVD and truss IA. Through steel castings G, truss IA, truss IIB, truss IIIC and the upper part of truss IVD are connected and fixed. Truss IA, truss IIB and truss IIIC are connected and fixed. Both the lower end of the truss and the truss IVD are equipped with embedded parts E, which are connected and fixed with the concrete structure. The upper ends of truss IA, truss IIB, truss IIIC and truss IVD are connected to the superstructure using complementary rods F. Truss ⅠA, truss ⅡB, truss ⅢC and truss ⅣD are all composed of upper chord bars, lower chord bars and web bars. When the distance between the upper chord bars and lower chord forming bars is close, a steel plate H is installed. The steel plate H is used to realize the control of the upper chord bar and the lower chord bar. Cavity connection.

An installation method of flexible steel columns integrated with building structures, including the following steps:

The first step: the hoisting section is assembled in the workshop. Truss IA, truss IIB, truss IIIC and truss IVD are all equipped with 10 hoisting sections. The hoisting section collects the workshop assembly coordinate information of each hoisting section through the software. After passing the pre-assembly acceptance in the workshop, it is transported to the site and the hoisting section is assembled on site.

When the hoisting section is assembled in the workshop, take three points 1, 6, and 25 among the center end points of the two adjacent lower chords to determine the local coordinate plane as the tire frame installation horizontal plane in the workshop. Use this coordinate system to calculate the other chord end points 7 and 13. , 14, 19, 20 and the positioning coordinate information of each node. Adjust the height of the tire frame to assemble the chord bar and web bar according to this coordinate information.

Step 2: Set up and unload the support frame to facilitate correction and temporary fixation during steel column installation. Set corresponding temporary support frames K along the steel column hoisting section points, a total of 24 groups. The installation height of the temporary support frame K is divided into three levels; the first and second support frames are installed in place on the steel columns and are unloaded and dismantled before being connected to the upper body; the third support frame is installed after the upper body system is completed and the steel columns After being connected to the upper body, dismantle symmetrically in batches.

Step 3: Assemble the hoisting section on site. Use a truck crane to lift the hoisting section symmetrically from bottom to bottom. When the hoisting section is hoisted to 200mm above the position, it will stop and stabilize. After the temporary support frame K below is adjusted in place, use the short column J Temporarily fix the hoisting section; the butt ends of the upper and lower chords are connected and fixed with double plywood M, and then the welding work at the butt positions is carried out.

Step 4: Monitor the construction process. Use a laser total station to locate the docking points on site. Measure after positioning. Measure after assembling the first frame. Measure after installing the 4 hoisting sections. Finally, proceed after the entire structure is completed. Review; when there is a large deviation between the measured spatial position and the theoretical value, adjustments should be made in time.

To sum up, the flexible steel columns integrated into the building structure and its installation method have the characteristics of compact structure, strong plasticity, high construction precision and fast installation. The upper main structure and the steel columns are connected through the supplementary section rods to realize the transmission of force. The entire structure is divided into several hoisting sections and pre-assembled in the workshop. The hoisting sections are installed and welded in sequence on site, which reduces the time for on-site construction and installation.

The above are only specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the field of the present invention are covered by the patent scope of the present invention. among.

Claims (7)

1. The utility model provides a building structure integration's flexible steel column which characterized in that: including truss I (A), truss II (B), truss III (C) and truss IV (D) constitute, truss I (A) and truss II (B), truss II (B) and truss III (C), all be equipped with between truss III (C) and truss IV (D), all be equipped with between truss IV (D) and truss I (A) and cast steel spare (G), be connected fixedly between truss I (A), truss II (B), truss III (C) and truss IV (D) upper portion through cast steel spare (G), truss I (A), truss II (B), truss III (C) and truss IV (D) lower extreme all be equipped with buried part (E), adopt buried part (E) and concrete structure to be connected fixedly.

2. The building structure integrated flexible steel column of claim 1, wherein: the steel column formed by the truss I (A), the truss II (B), the truss III (C) and the truss IV (D) is divided into 40 hoisting sections, namely sections 1 to 20, and each section is a pair.

3. The building structure integrated flexible steel column of claim 2, wherein: the upper ends of the truss I (A), the truss II (B), the truss III (C) and the truss IV (D) are connected with the upper structure by adopting a compensation rod piece (F).

4. A building structure integrated flexible steel column according to claim 3, wherein: the truss I (A), the truss II (B), the truss III (C) and the truss IV (D) are composed of an upper chord member, a lower chord member and web members, and when the distance between the upper chord member and the lower chord member is relatively short, a steel plate (H) is arranged, and the steel plate (H) is adopted to realize the cavity connection of the upper chord member and the lower chord member.

5. The method for installing a flexible steel column integrated with a building structure according to claim 4, comprising the following operation steps:

the first step: the hoisting sections are assembled in a workshop, and 10 hoisting sections are arranged on the truss I (A), the truss II (B), the truss III (C) and the truss IV (D);

when the hoisting section is assembled in a workshop, three points 1, 6 and 25 in the center endpoints of two adjacent lower chords are taken as the installation horizontal plane of a workshop jig frame, and the positioning coordinate information of other chord endpoints 7, 13, 14, 19 and 20 and each node is counted by the coordinate system;

and a second step of: the support frames are arranged and unloaded, so that correction and temporary fixation during steel column installation are facilitated, corresponding temporary support frames (K) are arranged along steel column hoisting segmentation points, and 24 groups are formed in total;

and a third step of: the hoisting sections are assembled on site, the automobile cranes are used for symmetrically hoisting the hoisting sections in sequence from bottom to bottom, when the hoisting sections are hoisted to 200mm above the hoisting sections in place, the machine is stopped stably, and after the lower temporary support frame (K) is adjusted in place, the hoisting sections are temporarily fixed by using the short upright posts (J); the butt joint ends of the upper chord member and the lower chord member are fixedly connected by adopting double clamping plates (M), and then welding work of butt joint positions is carried out;

fourth step: monitoring the construction process, positioning the site butt joint point by using a laser total station, measuring after positioning one truss, measuring after assembling one truss, measuring after installing 4 hoisting sections, and finally rechecking after the whole structure is completed; when the actual measurement space position deviates from the theoretical value greatly, the actual measurement space position should be adjusted in time.

6. The method of installing a flexible steel column integrated into a building structure according to claim 5, wherein: the hoisting sections collect workshop splicing coordinate information of each hoisting section through software, and the hoisting sections are transported to the site after being pre-spliced and accepted in the workshop, and spliced in the site.

7. The method of installing a flexible steel column integrated into a building structure according to claim 5, wherein: the installation height of the temporary support frame K is divided into three channels; the first support frame and the second support frame are unloaded and removed before the steel column is installed in place and is not connected with the upper main body; and the third supporting frame is symmetrically dismantled in batches after the upper main body system is installed and the steel column and the upper main body are connected in place.