Assembled supporting system applied to frame column reinforcement

Abstract

The utility model discloses an assembly type supporting system applied to frame column reinforcement, which relates to the technical field of frame column reinforcement, and comprises a lower floor and an upper floor, a frame column is arranged between the lower floor and the upper floor, a lower layer steel corbel is arranged at the bottom end of the frame column and below the lower floor, and a lower layer steel corbel is arranged below the lower layer steel corbel. An upper-layer steel corbel is arranged at the upper end of the frame column and above the upper floor slab, a plurality of first holes are formed in the surface of the lower floor slab and the periphery of the frame column, a plurality of second holes are formed in the surface of the upper floor slab and the periphery of the frame column, and a plurality of supporting steel columns are arranged between the lower-layer steel corbel and the upper-layer steel corbel. The top of the supporting steel column penetrates through the first hole and the second hole and is fixedly provided with a jack, and the top of the jack is fixedly connected with a steel base plate. The assembled, standardized and light-weight supporting system has the advantages that the assembled, standardized and light-weight supporting system is an efficient, safe and environment-friendly building supporting technology and has wide application prospects and huge market potential.

Description

Technical Field

[0001] The utility model relates to the technical field of frame column reinforcement, in particular to an assembled support system used for frame column reinforcement. Background Art

[0002] A frame column is a load-bearing member in a building structure, usually used to support the frame structure of a building. Frame columns are generally made of concrete, steel or other high-strength materials. Their function is to carry horizontal loads such as floor slabs and roofs, and transfer these loads to the foundation. Frame columns are usually located in the column position of a building, responsible for supporting the weight of the entire building structure, and are the main vertical load-bearing members.

[0003] Insufficient concrete strength of vertical components will affect the vertical and horizontal bearing capacity of the structure, and will also have an adverse effect on the normal performance and durability of the structure, such as cracks and deformation. Traditional reinforcement methods such as increasing the cross-section, external steel, and external fiber composite materials will increase the cross-sectional size of the component, and in many cases it is difficult to fully meet the design bearing capacity requirements. In response to the above problems, an assembled support system for frame column reinforcement is proposed to solve them. Utility Model Content

[0004] In order to solve the above technical problems, an assembled support system for frame column reinforcement is provided, which solves the problem that the insufficient concrete strength of the current vertical components will affect the vertical and horizontal bearing capacity of the structure, and will also have an adverse effect on the normal use performance and durability of the structure such as cracks and deformation. Traditional reinforcement methods such as increasing the cross-section, external steel, and external fiber composite materials will increase the cross-sectional size of the component, and in many cases it is difficult to fully meet the design bearing capacity requirements.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an assembled support system for reinforcing frame columns, including a lower floor slab and an upper floor slab, a frame column is arranged between the lower floor slab and the upper floor slab, a lower steel corbel is arranged at the bottom end of the frame column and below the lower floor slab, an upper steel corbel is arranged at the upper end of the frame column and above the upper floor slab, a plurality of first openings are opened around the surface of the lower floor slab and the frame column, a plurality of second openings are opened around the surface of the upper floor slab and the frame column, a plurality of supporting steel columns are arranged between the lower steel corbel and the upper steel corbel, the top of the supporting steel column passes through the first opening and the second opening and is fixedly installed with a jack, and the top of the jack is fixedly connected with a steel pad.

[0006] Preferably, the lower steel corbel includes a first bolt hole and a second bolt hole, the first bolt hole is opened through the left and right sides of the lower end of the frame column, and the second bolt hole is opened through the front and rear sides of the lower end of the frame column.

[0007] Preferably, a first pair of tie bolts are correspondingly arranged inside several of the first bolt holes, and first wing plates are fixedly connected to the left and right sides of the lower end of the frame column through the first pair of tie bolts.

[0008] Preferably, a second pair of tie bolts are correspondingly arranged inside several of the second bolt holes, and second wing plates are fixedly connected to the front and back sides of the lower end of the frame column through the second pair of tie bolts.

[0009] Preferably, the upper steel bracket includes third bolt holes and fourth bolt holes. The third bolt holes are penetratingly opened on the left and right sides of the upper end of the frame column, and the fourth bolt holes are penetratingly opened on the front and back sides of the upper end of the frame column.

[0010] Preferably, a third pair of tie bolts are correspondingly arranged inside several of the third bolt holes, and third wing plates are fixedly connected to the left and right sides of the upper end of the frame column through the third pair of tie bolts.

[0011] Preferably, a fourth pair of tie bolts are correspondingly arranged inside several of the fourth bolt holes, and fourth wing plates are fixedly connected to the front and back sides of the upper end of the frame column through the fourth pair of tie bolts.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: The components of the present utility model adopt a standardized design, can be quickly assembled into the required support structure, and can also be quickly disassembled, greatly shortening the construction period. Due to the adoption of a prefabricated design, the components can be quickly and accurately installed in place, reducing the on-site workload. After the support system is used up, it can be disassembled and reassembled to achieve multiple uses, greatly reducing the construction cost and having a lightweight design to reduce the self-weight of the support system, reduce the pressure on the floor slab, and at the same time be more convenient for handling and installation. In summary, this prefabricated, standardized, and lightweight support system is an efficient, safe, and environmentally friendly building support technology with broad application prospects and great market potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present utility model;

[0014] Figure 2 is an exploded view of the present utility model;

[0015] Figure 3 is an exploded view of the lower steel bracket and the upper steel bracket in the present utility model.

[0016] The reference numerals in the drawings are:

[0017] 1. Lower floor slab; 2. Upper floor slab; 3. Frame column; 4. Lower steel corbel; 401. First bolt hole; 402. First pair of tension anchor bolts; 403. First wing plate; 404. Second bolt hole; 405. Second pair of tension anchor bolts; 406. Second wing plate; 5. Upper steel corbel; 501. Third bolt hole; 502. Third pair of tension anchor bolts; 503. Third wing plate; 504. Fourth bolt hole; 505. Fourth pair of tension anchor bolts; 506. Fourth wing plate; 6. Support steel column; 7. First opening; 8. Second opening; 9. Jack; 10. Steel backing plate. Detailed implementation manner

[0018] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0019] Embodiment 1

[0020] Referring to Figures 1-3 As shown, an assembled support system applied to the reinforcement of frame columns includes a lower floor slab 1 and an upper floor slab 2. A frame column 3 is arranged between the lower floor slab 1 and the upper floor slab 2. A lower steel corbel 4 is arranged below the lower end of the frame column 3 and the lower floor slab 1. An upper steel corbel 5 is arranged above the upper end of the frame column 3 and the upper floor slab 2. A number of first openings 7 are formed on the surface of the lower floor slab 1 and around the frame column 3. A number of second openings 8 are formed on the surface of the upper floor slab 2 and around the frame column 3. A number of support steel columns 6 are arranged between the lower steel corbel 4 and the upper steel corbel 5. The support steel column 6 is made of a combined structure of a φ180x10mm thick steel pipe. The standard sections are standard components such as 1200mm, 800mm, 500mm, and 300mm. When the length of the support steel column 6 is insufficient, it can be connected by M20 connecting bolts. And eight support steel columns 6 are arranged for each frame column 3 to provide eight support points. The top of the support steel column 6 passes through the first opening 7 and the second opening 8 and is fixedly installed with a jack 9. The top of the jack 9 is fixedly connected with a steel backing plate 10.

[0021] Referring to Figure 3 As shown, the lower steel corbel 4 includes a first bolt hole 401 and a second bolt hole 404. The first bolt hole 401 is penetrated and opened on the left and right sides of the lower end of the frame column 3. The second bolt hole 404 is penetrated and opened on the front and rear sides of the lower end of the frame column 3.

[0022] Referring to Figure 3 As shown, a first pair of tension anchor bolts 402 are correspondingly arranged inside a number of first bolt holes 401. The left and right sides of the lower end of the frame column 3 are fixedly connected with a first wing plate 403 through the first pair of tension anchor bolts 402.

[0023] Referring to Figure 3As shown, a second pair of tension anchor bolts 405 are correspondingly arranged inside a number of second bolt holes 404, and second wing plates 406 are fixedly connected to the front and rear sides of the lower end of the frame column 3 through the second pair of tension anchor bolts 405.

[0024] Refer to Figure 3 As shown, the upper steel bracket 5 includes a third bolt hole 501 and a fourth bolt hole 504. The third bolt hole 501 is penetrated and opened on the left and right sides of the upper end of the frame column 3, and the fourth bolt hole 504 is penetrated and opened on the front and rear sides of the upper end of the frame column 3.

[0025] Refer to Figure 3 As shown, a third pair of tension anchor bolts 502 are correspondingly arranged inside a number of third bolt holes 501, and third wing plates 503 are fixedly connected to the left and right sides of the upper end of the frame column 3 through the third pair of tension anchor bolts 502.

[0026] Refer to Figure 3 As shown, a fourth pair of tension anchor bolts 505 are correspondingly arranged inside a number of fourth bolt holes 504, and fourth wing plates 506 are fixedly connected to the front and rear sides of the upper end of the frame column 3 through the fourth pair of tension anchor bolts 505. The first pair of tension anchor bolts 402, the second pair of tension anchor bolts 405, the third pair of tension anchor bolts 502 and the fourth pair of tension anchor bolts 505 are M20, grade 8.8. After being drilled through with a concrete core drill and inserted, the number of anchor bolts is determined according to the design values of axial force and shear force.

[0027] Working principle: First, use modeling software to model the components that need to be replaced during construction, simulate the mechanical state of the building, and determine the internal force values of the components to be replaced. Then, open a first hole 7 on the lower floor slab 1, a second hole 8 on the upper floor slab 2, and open a first bolt hole 401 and a second bolt hole 404 at the lower end of the frame column 3, and open a third bolt hole 501 and a fourth bolt hole 504 at the upper end of the frame column 3. Fix the first wing plate 403, the second wing plate 406, the third wing plate 503 and the fourth wing plate 506 by inserting the corresponding first pair of tension anchor bolts 402, the second pair of tension anchor bolts 405, the third pair of tension anchor bolts 502 and the fourth pair of tension anchor bolts 505 into the first bolt hole 401, the second bolt hole 404, the third bolt hole 501 and the fourth bolt hole 504. Then, install two support steel columns 6 on each of the first wing plate 403 and the second wing plate 406. The top ends of the support steel columns 6 pass through the first hole 7 and the second hole 8 and fixedly install jacks 9. The top of the jacks 9 abuts against the bottom of the third wing plate 503 and the fourth wing plate 506 through steel backing plates 10 to complete the installation of the support system.

[0028] Embodiment 2

[0029] 1. Implementation of the control system

[0030] (1) Control system: A central control system is adopted to control the jacking force of each group of screw jacks 9. The system operates synchronously under computer control, enabling the jacking force to be synchronized during the jacking process to ensure the structural force balance.

[0031] (2) Jacking system: Multiple jacks 9 are used to form a jacking group, and the group operates in coordination.

[0032] 2. Setting of the jacking device and the digital control system.

[0033] A central control system (such as PLC, servo driver, etc.) is used to control the synchronous operation of the jack cluster 9, control construction deviations, monitor the entire operation, and achieve information-based construction.

[0034] 3. Monitoring implementation

[0035] During the replacement construction process, it is necessary to ensure the real-time nature of the monitoring data, so as to promptly handle safety issues during the construction process. A relatively high remote automation monitoring frequency can ensure the safety and applicability of the structural components during the replacement column construction process, and conduct real-time remote automation monitoring on the support system and the components around the replacement column.

[0036] 4. Monitoring equipment and methods

[0037] During the replacement construction process, it is necessary to ensure that the beam and slab components connected to the replacement structure do not undergo large deformations, generate cracks, or have bearing capacity problems with the upper walls and columns, and ensure the stability of the support system. The monitoring contents include steel bar stress, concrete surface strain, support strain, beam deflection, and beam displacement.

[0038] 5. Monitoring point layout is as Figure 3 shown, and the monitoring sequence of the points is:

[0039] (1) Before installing the lower steel corbel 4 and the upper steel corbel 5, install concrete surface strain sensors on the upper and lower walls and columns. (2) Install displacement sensors and inclinometers on the upper layer beams to determine the natural state of the structure. (3) After installing the lower steel corbel 4 and the upper steel corbel 5, install surface strain sensors; (4) After the support system is erected, install steel support strain sensors and collect the monitoring data of all measuring instruments.

[0040] 6. Layout of the monitoring system

[0041] The monitoring system is responsible for monitoring the displacement of components, the displacement of the jacks 9, and the hydraulic pressure inside the jacks 9, and then realizing the monitoring of forces, and transmitting the monitoring signals to the control system in real time. The control system corrects the operation instructions.

[0042] (1) Stress monitoring

[0043] Since the force on the supporting part will cause the corbel to bend and shear, in order to ensure that the lower steel corbel 4 and the upper steel corbel 5 will not be damaged under the bending moment caused by the vertical supporting pressure and the possible unbalanced tensile force, and to ensure that the lower steel corbel 4 and the upper steel corbel 5 can effectively transfer the temporary supporting force to the upper and lower columns, thus completing the unloading of the replacement column, the stress of the lower steel corbel 4 and the upper steel corbel 5 is monitored, and the stress of the steel support is monitored.

[0044] (2) Strain monitoring

[0045] 1. In order to ensure the normal service performance of the upper and lower columns of the replacement column and prevent cracking during the replacement construction, the concrete strain on the surfaces of the lower and upper columns is monitored, and the layout and quantity of the monitoring points are determined according to relevant calculations.

[0046] 2. The strain of the steel pipe support is monitored to ensure the unloading effect of the support, and one monitoring point is arranged on each support.

[0047] 3. The vibrating wire strain sensor is used to measure the concrete strain. The sensor is pasted on the concrete surface of the monitoring point with high-strength AB glue, and the transmission box is fixed with expansion bolts.

[0048] 4. The vibrating wire strain sensor is used to measure the strain of the support. The sensor is pasted on the surface of the steel support with high-strength AB glue, and the transmission box is fixed on the steel support with cable ties.

[0049] 7. Monitoring and alarm

[0050] Three-level early warning is set, and the three-level early warning values are the maximum warning limit, 80% of the maximum warning limit, and 60% of the maximum warning limit. The maximum limit of the corbel axial force is determined according to the response value of the most unfavorable working condition calculated by finite element. The maximum limit of the concrete strain is selected as the concrete cracking strain, the maximum limit of the steel pipe support strain is selected as the yield strain of Q235 steel, and the beam displacement and inclination angle are converted according to the deflection limit of Lo / 300 required by the "Code for Design of Concrete Structures (GB50010-2010)", where Lo is the beam span. The monitored data value is compared with the preset three-level alarm threshold, and an alarm is given when the alarm threshold is exceeded. The monitoring frequency is 1 time per 30 minutes. During the process of chiseling the concrete column and pouring new concrete in stages, the monitoring frequency is increased to 1 time per 20 minutes. After completion, the change is continuously monitored, and the monitoring equipment is removed after stabilization.

[0051] 8. Control: When unloading the original structure, that is, when the jack 9 is jacking, monitoring instruments are arranged at the beam end and the column body, and the displacement of the beam end is controlled with a dial gauge. The structural displacement control value is 0.01mm - 0.05mm. Prevent the original structure from being damaged due to excessive supporting force.

[0052] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present utility model. Without departing from the spirit and scope of the present utility model, various changes and improvements will occur to the present utility model, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An assembled support system for reinforcing frame columns, characterized in that: The invention comprises a lower floor slab (1) and an upper floor slab (2), wherein a frame column (3) is arranged between the lower floor slab (1) and the upper floor slab (2), a lower steel corbel (4) is arranged between the bottom end of the frame column (3) and below the lower floor slab (1), an upper steel corbel (5) is arranged between the upper end of the frame column (3) and above the upper floor slab (2), a plurality of first openings (7) are opened on the surface of the lower floor slab (1) and around the frame column (3), a plurality of second openings (8) are opened on the surface of the upper floor slab (2) and around the frame column (3), a plurality of supporting steel columns (6) are arranged between the lower steel corbel (4) and the upper steel corbel (5), the top of the supporting steel column (6) passes through the first opening (7) and the second opening (8) and is fixedly installed with a jack (9), and the top of the jack (9) is fixedly connected with a steel pad (10).

2. The assembled support system for reinforcing frame columns according to claim 1 is characterized in that: The lower steel corbel (4) comprises a first bolt hole (401) and a second bolt hole (404), wherein the first bolt hole (401) is opened through the left and right sides of the lower end of the frame column (3), and the second bolt hole (404) is opened through the front and rear sides of the lower end of the frame column (3).

3. The assembled support system for reinforcing frame columns according to claim 2 is characterized in that: A first tension anchor bolt (402) is correspondingly arranged inside each of the first bolt holes (401), and the left and right sides of the lower end of the frame column (3) are fixedly connected to the first wing plate (403) through the first tension anchor bolt (402).

4. The assembled support system for reinforcing frame columns according to claim 2 is characterized in that: A second tension anchor bolt (405) is correspondingly arranged inside each of the second bolt holes (404), and the front and rear sides of the lower end of the frame column (3) are fixedly connected to the second wing plate (406) through the second tension anchor bolt (405).

5. The assembled support system for reinforcing frame columns according to claim 1 is characterized in that: The upper steel corbel (5) comprises a third bolt hole (501) and a fourth bolt hole (504), wherein the third bolt hole (501) is opened through the left and right sides of the upper end of the frame column (3), and the fourth bolt hole (504) is opened through the front and rear sides of the upper end of the frame column (3).

6. The assembled support system for reinforcing frame columns according to claim 5 is characterized in that: A third tension anchor bolt (502) is correspondingly arranged inside each of the third bolt holes (501), and the left and right sides of the upper end of the frame column (3) are fixedly connected to the third wing plate (503) through the third tension anchor bolt (502).

7. The assembled support system for reinforcing frame columns according to claim 5 is characterized in that: A fourth tension anchor bolt (505) is correspondingly arranged inside each of the fourth bolt holes (504), and the front and rear sides of the upper end of the frame column (3) are fixedly connected to the fourth wing plate (506) through the fourth tension anchor bolt (505).

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