Assembled supporting system applied to back-jacking unloading of beams and plates

Abstract

The utility model discloses an assembly type supporting system applied to beam and plate back-jacking unloading, and relates to the technical field of constructional engineering, the assembly type supporting system comprises six supporting columns, back-jacking sections, a first main keel, a secondary keel and a second main keel, the number of the supporting columns is six, three supporting columns form a group and are arranged front and back, the upper portions of the six supporting columns are all provided with the back-jacking sections, and the back-jacking sections are arranged on the lower portions of the first main keel and the secondary keel. The three first main keels are arranged above the back-to-top joints on the front side and the back-to-top joints on the rear side respectively, the four second main keels are arranged above the two adjacent sets of back-to-top joints respectively, a plurality of auxiliary keels are fixedly connected to the upper portions of the first main keels, and the auxiliary keels and the second main keels are arranged in parallel. The utility model has the advantages that the load of the original structural slab can be reduced, the damage to the structure in the construction process is reduced, the working principle is simple, the operation is convenient, the working is reliable, the flexibility is strong, the application range is wide, the popularization is easy, and the repeated use can be realized; all materials used by the back-jacking supporting and tightening device can be recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, and particularly relates to an assembled support system applied to the back jacking and unloading of beams and slabs. Background Technique

[0002] With the deepening of the urban renewal process in China, a large number of existing building reinforcement projects have emerged. During the structural reinforcement construction, the unloading support of the existing structure is related to both the reinforcement construction quality and the construction safety. Therefore, adopting a reliable and effective support system has become an essential key link in the reinforcement construction.

[0003] The traditional beam and slab support system generally adopts a fastener-type or disc buckle-type steel pipe scaffold support system, generally using steel pipes with a diameter of φ48.3×3.0 - 3.6mm. A top support and a square wood are arranged at the top of the steel pipe to support the beam and slab. However, the traditional method has a large amount of work, occupies a large amount of floor space, the self-weight of the frame is large, and an additional load is added to the original structure. To solve the above problems, an assembled support system applied to the back jacking and unloading of beams and slabs is proposed. Content of the Utility Model

[0004] To solve the above technical problems, an assembled support system applied to the back jacking and unloading of beams and slabs is provided, which solves the problems that the current traditional beam and slab support system generally adopts a fastener-type or disc buckle-type steel pipe scaffold support system, generally using steel pipes with a diameter of φ48.3×3.0 - 3.6mm, a top support and a square wood are arranged at the top of the steel pipe to support the beam and slab, but the traditional method has a large amount of work, occupies a large amount of floor space, the self-weight of the frame is large, and an additional load is added to the original structure.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an assembled support system applied to the back jacking and unloading of beams and slabs, including support columns, back jacking joints, first main keels, secondary keels and second main keels. A total of six support columns are provided, and three of them are arranged in a front-back row as a group. Back jacking joints are arranged above all six support columns. A total of three first main keels are respectively arranged above the front and back back jacking joints. A total of four second main keels are respectively arranged above adjacent groups of back jacking joints. A number of secondary keels are fixedly connected above the first main keels, and the secondary keels are arranged in parallel with the second main keels.

[0006] Preferably, the support column includes a steel backing plate, a first lattice column is fixedly connected above the steel backing plate, and two threaded steel bars are fixedly connected at the four corner positions of the steel backing plate above and the first lattice column, and the threaded steel bars are fixedly connected to the first lattice column by welding.

[0007] Preferably, the jacking section includes a mounting plate fixedly connected above the first lattice column. A second lattice column is fixedly connected above the mounting plate. A screw jack is fixedly installed above the mounting plate and inside the second lattice column. A jacking plate is sleeved outside the second lattice column. The output end of the screw jack abuts against the bottom surface of the jacking plate.

[0008] Preferably, the first main keel includes a first square steel, and first square steel sleeves are sleeved at both ends of the first square steel.

[0009] Preferably, first pin holes are penetrated through the surfaces of both first square steel sleeves, and second pin holes are penetrated through the surface of the first square steel. A first pin shaft is inserted at the corresponding position of the first pin hole inside and the second pin hole.

[0010] Preferably, the second main keel includes a second square steel, and second square steel sleeves are sleeved outside both ends of the second square steel.

[0011] Preferably, third pin holes are penetrated through the surfaces of both second square steel sleeves, and fourth pin holes are penetrated through the surface of the second square steel. A second pin shaft is inserted at the corresponding position of the third pin hole inside and the fourth pin hole.

[0012] Compared with the prior art, the advantages of the present utility model are as follows:

[0013] 1. By changing the original force transmission path of the structural roof slab, the present utility model strengthens and supports the original structural roof slab, transfers all loads of the beam and slab to the steel structure column through the secondary and main keels, forming a complete force system. The force transmission route is: floor load → original structural beam and slab → secondary keel → main keel → steel column, enabling the force to be transmitted layer by layer, reducing the load on the original structural slab, and reducing the damage to the structure during the construction process.

[0014] 2. This support system occupies little indoor space. The jacking support lattice column is equipped with a jack, which can generate jacking preloading (the jacking force can be controlled, and at the same time, the synchronous implementation of jacking can be achieved). The support system can better bear the force together with the main structure, reducing the deformation damage of the original structure during the construction processes such as reinforcement, transformation, and demolition.

[0015] 3. The technical working principle of the present utility model is simple, easy to operate, reliable in work, strong in flexibility, wide in application range, easy to promote, and can be reused; all materials used in the jacking support tightening device can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2Schematic diagram of the connection between the support column and the jacking section in the present utility model;

[0018] Figure 3 Schematic diagram of the structure of the jacking section in the present utility model;

[0019] Figure 4 Schematic diagram of the structure of the first main keel in the present utility model;

[0020] Figure 5 Schematic diagram of the structure of the second main keel in the present utility model.

[0021] The reference numerals in the figure are:

[0022] 1. Support column; 101. Steel backing plate; 102. First lattice column; 103. Rebar; 2. Jacking section; 201. Mounting plate; 202. Second lattice column; 203. Screw jack; 204. Jacking plate; 3. First main keel; 301. First square steel sleeve; 302. First square steel; 303. First pin hole; 304. Second pin hole; 305. First pin shaft; 4. Secondary keel; 5. Second main keel; 501. Second square steel sleeve; 502. Second square steel; 503. Third pin hole; 504. Fourth pin hole; 505. Second pin shaft. Detailed implementation manners

[0023] 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 in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0024] Refer to Figures 1-5 As shown, an assembled support system applied to the jacking and unloading of beams and slabs includes a support column 1, a jacking section 2, a first main keel 3, a secondary keel 4, and a second main keel 5. A total of six support columns 1 are provided, and they are arranged in a front-back row with three in a group. Jacking sections 2 are provided above all six support columns 1. There are three first main keels 3 respectively arranged above the front and rear jacking sections 2. There are four second main keels 5 respectively arranged above adjacent groups of jacking sections 2. A number of secondary keels 4 are fixedly connected above the first main keel 3, and the secondary keels 4 are arranged in parallel with the second main keel 5.

[0025] Refer to Figure 2As shown, the support column 1 includes a steel backing plate 101 which can provide a stable support foundation, ensuring that the support column 1 can bear the weight from the beams and slabs and disperse it to the ground. Above the steel backing plate 101, a first lattice column 102 is fixedly connected. At the four corners of the upper part of the steel backing plate 101 and the first lattice column 102, two threaded steel bars 103 are fixedly connected, and the threaded steel bars 103 are fixedly connected to the first lattice column 102 by welding. The support column 1 jacks up the structural slab upward through the primary and secondary profiled steel keel beams, and the support column 1 is placed downward on the ground or floor slab. If the support column 1 is placed on the ground, the load is directly transmitted to the ground. If the support column 1 is placed on the floor slab, the load acts on the floor slab and continues to be transmitted downward. For the case where the support column 1 is placed on the floor slab, multiple layers of support columns 1 can be set up for strengthening. The support column 1 is placed on at least two floor slabs, and the positions of the upper and lower support columns 1 are opposite, so as to realize the transfer of the upper and lower loads through the support column 1.

[0026] Refer to Figure 3 As shown, the back jacking section 2 includes a mounting plate 201 which is fixedly connected above the first lattice column 102. Above the mounting plate 201, a second lattice column 202 is fixedly connected. Inside the upper part of the mounting plate 201 and the second lattice column 202, a screw jack 203 is fixedly installed. A jacking plate 204 is sleeved outside the second lattice column 202, and the output end of the screw jack 203 abuts against the bottom surface of the jacking plate 204. By adjusting the screw jack 203, the height of the jacking plate 204 can be easily controlled to achieve precise back jacking and unloading. The jacking plate 204, as the part directly bearing the weight of the beams and slabs, is sleeved outside the second lattice column 202 to achieve stable lifting and lowering.

[0027] Refer to Figure 4 As shown, the first main keel 3 includes a first square steel 302, and both ends of the first square steel 302 are sleeved with first square steel sleeves 301. The first square steel 302, as the main load-bearing component, has high strength and can bear the lateral loads from the beams and slabs, and is assembled with the first square steel sleeves 301, improving the assembly flexibility of the system.

[0028] Refer to Figure 4 As shown, through holes are respectively formed on the surfaces of the two first square steel sleeves 301 to form first pin holes 303, and through holes are formed on the surface of the first square steel 302 to form second pin holes 304. At the corresponding positions of the inside of the first pin holes 303 and the second pin holes 304, first pin shafts 305 are inserted. The first pin holes 303, the second pin holes 304 and the first pin shafts 305 can adjust the length of the first main keel 3.

[0029] Refer to Figure 5As shown, the second main keel 5 includes a second square steel 502. Second square steel sleeves 501 are sleeved on the outer sides of both ends of the second square steel 502. As a strengthening structure, in cooperation with the first main keel 3, the lateral stability of the entire support system is enhanced.

[0030] Referring to Figure 5 As shown, through holes are formed in the surfaces of both second square steel sleeves 501 to form third pin holes 503, and through holes are formed in the surface of the second square steel 502 to form fourth pin holes 504. Second pin shafts 505 are inserted at positions corresponding to the fourth pin holes 504 inside the third pin holes 503. Similar to the first main keel 3, the flexibility of adjustment of the second main keel 5 is improved.

[0031] Working principle:

[0032] (1) After placing a steel backing plate 101 under the support column 1, the first lattice columns 102 are installed one by one according to the support height requirements. A number of the first lattice columns 102 can be stacked and assembled and connected through bolt holes and connecting bolts.

[0033] (2) After the installation of the support column 1 is completed, the jacking sections 2 are installed above each first lattice column 102. The connection of the jacking sections 2 can be fixedly connected by bolts and welding.

[0034] (3) The first main keel 3 and the second main keel 5 are made of square steel. To meet the needs of different support lengths, the square steel is made in a telescopic and assembled form. The length of the keel can be freely adjusted to meet the construction requirements of different buildings.

[0035] (4) After the installation of the first main keel 3 and the second main keel 5 is completed, the secondary keel 4 is laid above the first main keel 3.

[0036] (5) After all components are installed, the screw jack 203 is used to adjust the jacking height and the jacking force to ensure that the jacking system is tightly pressed against the original structure, being firm and reliable.

[0037] The above shows and describes 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, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An assembled support system for beam and slab top unloading, characterized by: The invention comprises a support column (1), a return top section (2), a first main keel (3), a secondary keel (4) and a second main keel (5); the support column (1) is provided with six in total, and three in a group are arranged in front and back; a return top section (2) is provided above each of the six support columns (1); the first main keels (3) are provided with three in total, which are respectively provided above the return top sections (2) on the front and rear sides; the second main keels (5) are provided with four in total, which are respectively provided above the return top sections (2) in two adjacent groups; a plurality of secondary keels (4) are fixedly connected above the first main keel (3), and the secondary keels (4) are provided in parallel with the second main keels (5).

2. The assembled support system for beam and slab top-down unloading according to claim 1 is characterized in that: The support column (1) comprises a steel pad (101), a first lattice column (102) is fixedly connected above the steel pad (101), two threaded steel bars (103) are fixedly connected above the steel pad (101) and at four corners of the first lattice column (102), and the threaded steel bars (103) are fixedly connected to the first lattice column (102) by welding.

3. The assembled support system for beam and slab top-down unloading according to claim 1 is characterized in that: The return top section (2) comprises a mounting plate (201), the mounting plate (201) is fixedly connected to the top of the first lattice column (102), a second lattice column (202) is fixedly connected to the top of the mounting plate (201), a screw jack (203) is fixedly installed above the mounting plate (201) and inside the second lattice column (202), a lifting plate (204) is sleeved on the outside of the second lattice column (202), and an output end of the screw jack (203) is in contact with the bottom surface of the lifting plate (204).

4. The assembled support system for beam and slab top-down unloading according to claim 1 is characterized in that: The first main keel (3) comprises a first square steel (302), and both ends of the first square steel (302) are sleeved with a first square steel sleeve (301).

5. The assembled support system for beam and slab top-down unloading according to claim 4 is characterized in that: A first pin hole (303) is formed through the surfaces of the two first square steel sleeves (301), a second pin hole (304) is formed through the surface of the first square steel (302), and a first pin shaft (305) is inserted at a position corresponding to the second pin hole (304) inside the first pin hole (303).

6. The assembled support system for beam and slab top-down unloading according to claim 1 is characterized in that: The second main keel (5) comprises a second square steel (502), and second square steel sleeves (501) are sleeved on the outer sides of both ends of the second square steel (502).

7. The assembled support system for beam and slab top-down unloading according to claim 6 is characterized in that: The surfaces of the two second square steel sleeves (501) are both penetrated with a third pin hole (503), the surface of the second square steel (502) is penetrated with a fourth pin hole (504), and a second pin shaft (505) is inserted at a position corresponding to the fourth pin hole (504) inside the third pin hole (503).

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