Office area suspended ceiling lower cross arm steel frame structure and construction method

Abstract

The invention discloses an office area suspended ceiling lower cross arm steel frame structure and a construction method, and relates to the technical field of suspended ceiling construction. The office area suspended ceiling lower cross arm steel frame structure comprises a plurality of structural beams, and the bottoms of the structural beams are each fixedly provided with a pair of first fixing angle steel and a pair of galvanized embedded parts; expansion bolts are connected between the pair of first fixing angle steel and the structural beam and between the pair of galvanized embedded parts and the structural beam through threads, second fixing angle steel is welded to the bottom of each galvanized embedded part, and vertical angle steel is welded to one side of each second fixing angle steel. The effect of stably connecting and installing the lower cross arm steel frame is achieved, and the problems that in the prior art, an aluminum plate and a steel structure at the bottom are fixedly connected only through a hanging rod, the connecting mode is simple, the connecting stability is poor, and due to a common construction and installation mode, a large-size air pipe is often arranged in a suspended ceiling, and the construction cost is low are solved. The arrangement distance between the suspended ceiling transfer layer and the suspenders is disordered, and fixing measures and suspended ceiling reinforcing measures need to be additionally taken.

Description

Technical Field

[0001] The invention relates to the technical field of suspended ceiling construction, and in particular to a cross arm steel frame structure under a suspended ceiling of an office area and a construction method thereof. Background Art

[0002] During the suspended ceiling construction process, the spacing between hangers and transition layers should not be too large in accordance with the calculation requirements and specification requirements. At the same time, in order to reduce the bearing capacity of the main body and save materials, high-grade materials should not be used for hangers and transition layers.

[0003] The patent document with publication number CN117989391A discloses an integrated support and hanger construction structure and construction method for a modular computer room, including: a floor top plate, an angle steel hanger, a horizontal beam, an aluminum plate, a bridge support and hanger hanger, and a C-shaped steel; the top of the angle steel hanger is connected to the bottom of the floor top plate, the bottom of the angle steel hanger is connected to the top of the horizontal beam, the top of the bridge support and hanger hanger is connected to the horizontal beam, the bottom of the bridge support and hanger hanger is connected to the top of the C-shaped steel, and the aluminum plate is connected to both sides of the C-shaped steel.

[0004] However, the above invention has the following shortcomings: the above structure only fixes the aluminum plate and the bottom steel structure through the hanger, the connection method is relatively simple, and the connection stability is poor, and the common construction and installation method often results in the installation of larger-sized air ducts in the ceiling, disrupting the ceiling transition layer and the spacing of the hanger arrangement, and requiring additional fixing measures and ceiling reinforcement measures, so there are certain limitations. Summary of the invention

[0005] The purpose of the present invention is to provide a cross-arm steel frame structure and construction method under the suspended ceiling of an office area, so as to solve the problems raised in the above-mentioned background technology, by vertically arranging galvanized angle steels and horizontally arranging channel steels to replace the original angle steel design, and at the same time by reinforcing the vertical angle steel fixing method to strengthen the connection with the main structure and ensure stability, which can better solve the problems of uneven layout spacing of the transition layer and fixation of the air duct caused by larger air ducts, thereby ensuring the construction quality.

[0006] The technical solution of the present invention is: a cross-beam steel frame structure under the suspended ceiling of an office area, comprising a plurality of structural beams, a pair of fixed angle steels and a pair of galvanized embedded parts are fixedly installed at the bottom of the plurality of structural beams, the pair of fixed angle steels and the galvanized embedded parts are both threadedly connected to the structural beams with expansion bolts, a fixed angle steel 2 is welded to the bottom of each of the galvanized embedded parts, a vertical angle steel is welded to one side of each of the fixed angle steels 2, and a threaded hanger rod 1 is welded to one side of each of the fixed angle steels 1.

[0007] Preferably, a transverse angle steel is commonly fixedly installed at the bottom of each two adjacent threaded hanger rods 1, and a pair of fixing bolts are threadedly connected between the transverse angle steel and the threaded hanger rod 1.

[0008] Preferably, an air duct is fixedly installed on the surfaces of the plurality of transverse angle steels, a conical threaded tube is threadedly connected to each of the threaded hangers, a conical rubber pad is fixedly installed on the outer peripheral wall of the conical threaded tube, and the conical rubber pad is in conflict with the air duct.

[0009] Preferably, a lower support channel steel is welded to the bottom of each two adjacent vertical angle steels, a reinforcing rib is fixedly installed between the vertical angle steels and the lower support channel steels, a plurality of longitudinal angle steels are welded to the surfaces of the plurality of lower support channel steels, and two threaded hangers are fixedly installed between each of the longitudinal angle steels and the lower support channel steel via fixing bolts.

[0010] Preferably, a light steel keel is fixedly installed near the bottom of the plurality of threaded hangers 2 by fixing bolts.

[0011] Preferably, a plurality of pairs of support blocks are fixedly installed on the bottom of each lower support channel steel and the surface of the light steel keel, and a threaded sleeve is rotatably installed between each pair of support blocks, and the threaded sleeve is connected to the threaded hanger rod 2 through threads.

[0012] A construction method for a cross-arm steel frame structure under a suspended ceiling in an office area, comprising the following steps;

[0013] Step 1: Positioning and laying out: Determine the position of the air duct according to the drawing, position and lay out the galvanized embedded parts, fixed angle steel 1, threaded hanger 1 and threaded hanger 2, and draw elevation lines on the surrounding walls and columns according to the design elevation. The error must not exceed 2mm. Determine the position of the air vents and lamps, and determine the layout of the components.

[0014] Step 2: Pre-embedding and fixing: Drill holes in the galvanized embedded parts according to the positioning dimensions, fix them with expansion bolts, and apply anti-corrosion agent after completion.

[0015] Step 3. Weld threaded hanger 1 on fixed angle steel 1, then fix the horizontal angle steel with fixing bolts, install the air duct, rotate the tapered threaded tube to the position that conflicts with the outside of the air duct, and then fix the angle steel 2 with galvanized embedded parts, then fix the vertical angle steel, install the lower support channel steel, and drill holes according to the positioning before installation.

[0016] Step 4: Installation of longitudinal angle steel: The lower channel steel and the longitudinal angle steel are fixed and installed by fixing bolts and threaded sleeves.

[0017] Step 5. Install threaded hanger rod 2: Threaded hanger rod 2 is fixed to the lower support channel steel and longitudinal angle steel.

[0018] Step 6: Fix the light steel keel with threaded hanger rod 2 through fixing bolts and threaded sleeves.

[0019] Step 7: Install the surface material.

[0020] Step 8: Verify that the materials are fixed and apply fire-proof and anti-corrosion coatings.

[0021] Step 9: Check the flatness and verticality.

[0022] The present invention provides an office area ceiling crossbar steel frame structure and construction method through improvement, which has the following improvements and advantages compared with the prior art:

[0023] First, the present invention arranges a transverse lower support channel steel to replace the original angle steel, thereby increasing the transverse spacing, improving the bearing capacity, ensuring that the material can withstand stiffness after subsequent construction and completion without deformation, increasing the transverse space, strengthening the overall structure, and creating conditions for the installation of air ducts. The lower support channel steel and the longitudinal angle steel are connected through two threaded hangers, and then connected to the light steel keel of the suspended ceiling to form an overall system of the suspended ceiling, thereby improving the integrity and better solving the problem of mutual obstruction between the suspended ceiling materials and the air ducts. In addition, the threaded tube arranged can further improve the stability of the connection between the lower support channel steel, the light steel keel and the two threaded hangers.

[0024] Second, the present invention utilizes vertical square steel as support to form a conversion layer with the lower support channel steel, and provides galvanized embedded parts on the top thereof, which are connected to the structural beam using expansion bolts. The galvanizing treatment can avoid subsequent corrosion, and the reinforcement ribs provided can further improve the connection strength between the lower support channel steel and the structural beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the overall first-view structure provided by the present invention;

[0027] Figure 2 A schematic diagram of the overall front view structure provided by the present invention;

[0028] Figure 3 A schematic diagram of the overall second viewing angle structure provided by the present invention;

[0029] Figure 4 The present invention provides Figure 3 A is an enlarged structural diagram;

[0030] Figure 5 The present invention provides Figure 3 The enlarged structural diagram at B in FIG.

[0031] Figure 6 This is a schematic diagram of the galvanized embedded part structure provided by the present invention.

[0032] Reference numerals:

[0033] 1. Structural beam; 2. One fixed angle steel; 3. Galvanized embedded parts; 4. Expansion bolts; 5. One threaded hanger rod; 6. Horizontal angle steel; 7. Air duct; 8. Two fixed angle steels; 9. Vertical angle steels; 10. Lower support channel steel; 11. Two threaded hangers; 12. Fixing bolts; 13. Light steel keel; 14. Reinforcement ribs; 15. Longitudinal angle steel; 16. Support block; 17. Threaded sleeve; 18. Tapered threaded cylinder; 19. Tapered rubber pad. DETAILED DESCRIPTION

[0034] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides an office area ceiling crossbar steel frame structure and construction method through improvement. The technical solution of the present invention is:

[0036] Embodiment 1

[0037] like Figures 1 to 6 As shown, an embodiment of the present invention provides a crossbar steel frame structure under a suspended ceiling in an office area, comprising a plurality of structural beams 1, a pair of fixed angle steels 2 and a pair of galvanized embedded parts 3 are fixedly installed at the bottom of the plurality of structural beams 1, an expansion bolt 4 is threadedly connected between the pair of fixed angle steels 2 and the galvanized embedded parts 3 and the structural beams 1, a fixed angle steel 8 is welded to the bottom of each galvanized embedded part 3, a vertical angle steel 9 is welded to one side of each fixed angle steel 8, a threaded suspension rod 5 is welded to one side of each fixed angle steel 2, the galvanized embedded parts 3 and the fixed angle steel 2 can provide a basis for the installation of the fixed angle steel 8 and the threaded suspension rod 5, and the expansion bolts 4 can improve the stability of the connection and fixation.

[0038] Furthermore, a transverse angle steel 6 is fixedly installed at the bottom of each two adjacent threaded hangers 5, and a pair of fixing bolts 12 are threadedly connected between the transverse angle steel 6 and the threaded hanger 5. The fixing bolts 12 can well fix the transverse angle steel 6 and the threaded hanger 5.

[0039] Furthermore, the air duct 7 is fixedly installed on the surfaces of multiple transverse angle steels 6, and a conical threaded tube 18 is threadedly connected to each threaded hanger 5. A conical rubber pad 19 is fixedly installed on the outer peripheral wall of the conical threaded tube 18. The conical rubber pad 19 is in conflict with the air duct 7. The multiple transverse angle steels 6 can provide support for the installation of the air duct 7. The conical threaded tube 18 can effectively conflict with the two sides of the air duct 7, thereby improving the stability of the fixed installation of the air duct 7. The conical rubber pad 19 can protect the side walls of the air duct 7 when they conflict with each other.

[0040] Furthermore, a lower support channel steel 10 is welded to the bottom of each two adjacent vertical angle steels 9, a reinforcing rib 14 is fixedly installed between the vertical angle steels 9 and the lower support channel steels 10, a plurality of longitudinal angle steels 15 are welded to the surfaces of the plurality of lower support channel steels 10, and a threaded hanger rod 11 is fixedly installed between each longitudinal angle steel 15 and the lower support channel steel 10 via a fixing bolt 12, and the stability of the overall structure is further improved by the provision of the longitudinal angle steels 15.

[0041] Furthermore, a light steel keel 13 is fixedly installed near the bottom of the plurality of threaded hangers 11 via fixing bolts 12 , and the light steel keel 13 and the threaded hangers 11 can be well hoisted and fixed via the provided fixing bolts 12 .

[0042] Furthermore, a plurality of pairs of support blocks 16 are fixedly installed on the bottom of each lower support channel steel 10 and the surface of the light steel keel 13, and a threaded sleeve 17 is rotatably installed between each pair of support blocks 16. The threaded sleeve 17 is connected to the threaded hanger rod 11 through a thread. The provided threaded sleeve 17 can further improve the stability of the fixed connection between the lower support channel steel 10, the light steel keel 13 and the threaded hanger rod 11.

[0043] Embodiment 2

[0044] This embodiment provides a method for constructing a cross-arm steel frame structure under a suspended ceiling in an office area, comprising the following steps:

[0045] Step 1: Positioning and laying out: Determine the position of the air duct 7 according to the drawing, position and lay out the galvanized embedded parts 3, fixed angle steel 2, threaded hanger 1 5 and threaded hanger 2 11, and draw elevation lines on the surrounding walls and columns according to the design elevation. The error must not exceed 2mm. Determine the position of the air vents and lamps, and determine the position layout of each component.

[0046] Step 2: Pre-embedding and fixing: Punch holes in the galvanized embedded parts 3 according to the positioning dimensions, fix them with expansion bolts 4, and apply antiseptic after completion.

[0047] Step 3, weld the threaded hanger 5 on the fixed angle steel 2, then fix the horizontal angle steel 6 with the fixing bolts 12, then install the air duct 7, rotate the tapered threaded tube 18 to the position that conflicts with the outside of the air duct 7, and then use the galvanized embedded parts 3 to fix the angle steel 2 8, then fix the vertical angle steel 9, install the lower support channel steel 10, and drill holes according to the positioning before installation.

[0048] Step 4: Installation of the longitudinal angle steel 15: The lower support channel steel 10 and the longitudinal angle steel 15 are fixedly installed by fixing bolts 12 and threaded sleeves 17.

[0049] Step 5, installing the threaded hanger rod 2 11: The threaded hanger rod 2 11 is fixedly installed with the lower supporting channel steel 10 and the longitudinal angle steel 15.

[0050] Step 6: Fix the light steel keel 13 to the threaded suspension rod 11 through the fixing bolts 12 and the threaded sleeve 17.

[0051] Step 7: Install the surface material.

[0052] Step 8: Verify that the materials are fixed and apply fire-proof and anti-corrosion coatings.

[0053] Step 9: Check the flatness and verticality.

[0054] The specific working principle is as follows: first, the galvanized embedded parts 3 and the fixed angle steel 2 are fixedly connected to the structural beam 1 by the expansion bolts 4, and then the fixed angle steel 8, the vertical angle steel 9 and the threaded hanger 5 are fixed by welding, and the transverse angle steel 6 is fixedly connected to a pair of threaded hangers 5 by the fixing bolts 12, and then the air duct 7 is fixedly installed on the transverse angle steel 6. After the air duct 7 is fixedly installed, the tapered threaded cylinder 18 is rotated to conflict with the side wall of the air duct 7, thereby achieving the conflict with both sides of the air duct 7 and improving its fixing effect. In addition, a lower support channel steel 10 is welded and fixed at the bottom of the vertical angle steel 9, and a reinforcing rib 14 is fixedly installed between the two to improve the stability of the fixed connection between the two. Then, the longitudinal angle steel 15 and the light steel keel 13 are fixedly installed by fixing bolts 12 and threaded hangers 11. The stability of the overall structure is improved by the longitudinal angle steel 15. The stability of the connection between the threaded hanger 11 and the lower support channel steel 10 and the light steel keel 13 can be further improved by setting the threaded sleeve 17, thereby further improving the stability of the overall frame structure.

[0055] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crossbar steel frame structure under a suspended ceiling in an office area, comprising a plurality of structural beams (1), wherein a pair of fixed angle steels (2) and a pair of galvanized embedded parts (3) are fixedly mounted at the bottom of each of the plurality of structural beams (1), characterized in that: A pair of the fixed angle steels (2) and the galvanized embedded parts (3) are connected to the structural beam (1) via expansion bolts (4) through threads, a fixed angle steel (8) is welded to the bottom of each galvanized embedded part (3), a vertical angle steel (9) is welded to one side of each fixed angle steel (8), and a threaded suspension rod (5) is welded to one side of each fixed angle steel (2).

2. The cross arm steel frame structure under the suspended ceiling of an office area according to claim 1, characterized in that: A transverse angle steel (6) is fixedly mounted on the bottom of each two adjacent threaded suspension rods (5), and a pair of fixing bolts (12) are threadedly connected between the transverse angle steel (6) and the threaded suspension rod (5).

3. The cross arm steel frame structure under the suspended ceiling of an office area according to claim 2, characterized in that: An air duct (7) is fixedly mounted on the surfaces of the plurality of transverse angle steels (6), and a conical threaded tube (18) is threadedly connected to each of the threaded hangers (5). A conical rubber pad (19) is fixedly mounted on the outer peripheral wall of the conical threaded tube (18), and the conical rubber pad (19) is in contact with the air duct (7).

4. The crossbar steel frame structure under the suspended ceiling of an office area according to claim 1, characterized in that: A lower support channel steel (10) is welded to the bottom of each two adjacent vertical angle steels (9), a reinforcing rib (14) is fixedly installed between the vertical angle steels (9) and the lower support channel steels (10), a plurality of longitudinal angle steels (15) are welded to the surface of the plurality of lower support channel steels (10), and a threaded suspension rod (11) is fixedly installed between each longitudinal angle steel (15) and the lower support channel steel (10) via a fixing bolt (12).

5. The crossbar steel frame structure under the suspended ceiling of an office area according to claim 4, characterized in that: A plurality of the threaded suspension rods (11) are fixedly mounted with a light steel keel (13) near the bottom via fixing bolts (12).

6. The cross arm steel frame structure under the suspended ceiling of an office area according to claim 4, characterized in that: A plurality of pairs of support blocks (16) are fixedly mounted on the bottom of each lower support channel steel (10) and the surface of the light steel keel (13), and a threaded sleeve (17) is rotatably mounted between each pair of the support blocks (16), and the threaded sleeve (17) is connected to the threaded suspension rod 2 (11) through threads.

7. A construction method for a steel frame structure under a suspended ceiling in an office area, which is applied to the steel frame structure under a suspended ceiling in an office area as claimed in any one of claims 1 to 6, characterized in that: The steps include: Step 1: Positioning and laying out: Determine the position of the air duct (7) according to the drawing, position and lay out the galvanized embedded parts (3), fixed angle steel 1 (2), threaded hanger 1 (5) and threaded hanger 2 (11), and draw elevation lines on the surrounding walls and columns according to the design elevation. The error shall not exceed 2mm. Determine the position of the air vents and lamps, and determine the position and arrangement of each component. Step 2: Pre-embedding and fixing: punch holes in the galvanized embedded parts (2) according to the positioning dimensions, fix them with expansion bolts (4), and apply antiseptic after completion; Step 3, weld the threaded suspension rod 1 (5) on the fixed angle steel 1 (2), then fix the horizontal angle steel (6) with the fixing bolts (12), then install the air duct (7), rotate the tapered threaded tube (18) to a position that contacts the outside of the air duct (7), then fix the fixed angle steel 2 (8) with the galvanized embedded part (3), then fix the vertical angle steel (9), install the lower support channel steel (10), and drill holes according to the positioning before installation; Step 4: Install the longitudinal angle steel (15): The lower support channel steel (10) and the longitudinal angle steel (15) are fixedly installed by fixing bolts (12) and threaded sleeves (17); Step 5: Install the threaded hanger rod 2 (11), specifically, fix the threaded hanger rod 2 (11) to the lower support channel steel (10) and the longitudinal angle steel (15); Step 6: Fix the light steel keel (13) with the fixing bolts (12), the threaded sleeve (17) and the threaded suspension rod 2 (11); Step 7: Installation of surface materials; Step 8: Check the material fixation and apply fireproof and anti-corrosion coatings; Step 9: Check the flatness and verticality.

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