Temporary combined jacking structure for door-shaped inner support

Abstract

The utility model discloses a door-shaped inner support temporary combination back-jacking structure which is applied to an inner support pipe and an engineering pile and comprises a cross beam, a stand column and a steel plate base, the cross beam is arranged at the bottom end of the inner support pipe and used for supporting the inner support pipe, the stand column is arranged at the end of the cross beam and used for supporting the cross beam, and the steel plate base is arranged at the bottom end of the stand column. Connecting pieces are arranged at the bottom end of the steel plate base. By means of the design of the cross beam, the stand column, the steel plate base and the connecting piece, the cross beam and the stand column are arranged to be the n-shaped square steel cross beam system, the problem that the stand column of the inner supporting pipe deviates due to the influence of silt geology during earth excavation can be solved, construction safety measures are guaranteed, and meanwhile the cross beam and the stand column are made of temporary combination materials. The ALC wall plates can be used for reinforcing the square steel profiles on site, operation is convenient, good compression resistance is achieved, the problem that the machining period of jacking materials is too long is effectively solved, and an inner support jacking system can be formed through rapid emergency combination.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering construction, in particular to a temporary combined backtop structure of a portal-shaped internal support. Background Technique

[0002] With the continuous construction and development of intelligent high-tech chip factory industrial parks, there are relatively high requirements for the layout of equipment rooms in clean workshops. Generally, a clean workshop is designed with a basement floor, and equipment rooms such as fire pools and fire pump rooms are arranged in the basement area. In the construction of basement foundation pit support under the condition of ultra-thick silt geology, if concrete column piles or prestressed concrete pipe piles are used for backtop internal support, during the excavation of foundation pit soil, due to the ultra-thick silt, under the action of flowing plastic silt, it is easy to cause the problem of column pile deviation and internal support instability. Content of the Utility Model

[0003] The purpose of the utility model is to provide a temporary combined backtop structure of a portal-shaped internal support to solve the problems put forward in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A temporary combined backtop structure of a portal-shaped internal support, which is applied to an internal support pipe and a engineering pile, includes:

[0005] A cross beam, which is arranged at the bottom end of the internal support pipe, and the cross beam is used to support the internal support pipe;

[0006] A column, which is arranged at the end of the cross beam, and the column is used to support the cross beam;

[0007] A steel plate base, which is arranged at the bottom end of the column, and a connecting piece for connecting with the engineering pile is arranged at the bottom end of the steel plate base.

[0008] Preferably, one end of the cross beam is fixedly connected to the outer wall of the top of the column, and the bottom end of the column is fixedly connected to the top end of the steel plate base.

[0009] Preferably, the connecting piece includes inserted steel bars, an insertion groove is opened at the top end of the engineering pile, the inserted steel bars are inserted and connected with the insertion groove, and the top end of the inserted steel bars is fixedly connected to the bottom end of the steel plate base.

[0010] Preferably, bracket components for strengthening the stability of the column are respectively arranged at the top and bottom of the column.

[0011] Preferably, the bracket component includes a horizontal angle steel and a vertical angle steel which are arranged perpendicular to each other, and the opposite ends of the horizontal angle steel and the vertical angle steel are fixedly connected.

[0012] Preferably, an inclined angle steel is fixedly connected to one side of the horizontal angle steel, and the inclined angle steel, the horizontal angle steel and the vertical angle steel form a triangle.

[0013] Technical effects and advantages of the present utility model:

[0014] By using the design of cross beams, columns, steel plate bases and connectors, and setting the cross beams and columns into a portal-shaped square steel cross beam system, the present utility model can avoid the problem of the deviation of the inner support pipe columns caused by the influence of the silt geology during earth excavation, ensuring construction safety measures. At the same time, the cross beams and columns adopt temporary composite materials, and the ALC wall panels can be used locally to reinforce the square steel profiles, which has good timeliness, is easy to operate, has good compressive performance, effectively avoids the problem of too long processing cycle of the back jacking materials, and can quickly form an inner support back jacking system through emergency combination. Description of the drawings

[0015] Figure 1 It is a front view structural schematic diagram of the present utility model.

[0016] Figure 2 It is a side view structural schematic diagram of the present utility model.

[0017] Figure 3 It is a structural schematic diagram of the bracket assembly of the present utility model.

[0018] Figure 4 It is a structural schematic diagram of the steel plate base of the present utility model.

[0019] In the figure: 1, cross beam; 2, column; 3, steel plate base; 4, engineering pile; 5, bracket assembly; 51, horizontal angle steel; 52, vertical angle steel; 53, diagonal angle steel; 6, inserted steel bar; 7, inner support pipe. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides a portal-shaped inner support temporary composite back jacking structure as shown in Figures 1-4 which is applied to the inner support pipe 7 and the engineering pile 4, and includes:

[0022] A cross beam 1, which is arranged at the bottom end of the inner support pipe 7 and is used to support the inner support pipe 7;

[0023] A column 2, which is arranged at the end of the cross beam 1 and is used to support the cross beam 1;

[0024] The steel plate base 3 is arranged at the bottom end of the column 2, and a connecting piece for connecting with the engineering pile 4 is arranged at the bottom end of the steel plate base 3.

[0025] Specifically, one end of the cross beam 1 is fixedly connected to the outer wall of the top of the column 2, the bottom end of the column 2 is fixedly connected to the top end of the steel plate base 3. The connecting piece includes inserted steel bars 6. A penetrating groove is opened at the top end of the engineering pile 4, and the inserted steel bars 6 are inserted and connected with the penetrating groove. The top end of the inserted steel bars 6 is fixedly connected to the bottom end of the steel plate base 3.

[0026] Furthermore, the internal support pipe 7 and the engineering pile 4 are respectively existing internal supports and prestressed concrete pipe piles. The temporary combined back - topping structure is arranged between the internal support pipe 7 and the engineering pile 4. The cross beam 1 is made of square steel with dimensions of 200×200×5 mm, the column 2 is made of square steel with dimensions of 200×200×5 mm, the steel plate base 3 is made of a rectangular steel plate with a thickness of 5 mm. At least eight inserted steel bars 6 are arranged and are arranged at equal intervals in a ring shape. The inserted steel bars 6 are made of steel bars with a diameter of 28 mm and a length of 1 m. The column 2 is vertically arranged on both sides of the internal support pipe 7. Two cross beams 1 are arranged, respectively on both sides of the top of the column 2, playing a supporting role for the internal support pipe 7. The part where the cross beam 1 contacts the column 2 is fully welded, and the bottom end of the column 2 and the top end of the steel plate base 3 are fixedly connected by full welding. The column 2 is arranged in the middle of the top end of the steel plate base 3. The length and width dimensions of the steel plate base 3 are larger than the diameter of the engineering pile 4. For example, for an engineering pile 4 with a diameter of 600 mm, the length and width dimensions of the steel plate base 3 can be 1 m. The inserted steel bars 6 are fixedly connected to the bottom end of the steel plate base 3 by plug welding. Through the assembly and welding of the cross beam 1, the column 2, the steel plate base 3, the engineering pile 4 and the bracket assembly 5, a temporary back - topping support structure for bearing vertical loads is formed. Since the temporary combined materials can utilize ALC wall panels to reinforce square steel profiles locally, it has good timeliness, is convenient for operation, has good compressive performance, effectively avoids the problem of too long processing cycle of the back - topping materials, can quickly form an internal support back - topping system through emergency combination, effectively improves the on - site construction efficiency, is beneficial to the construction period performance of the foundation slab construction. At the same time, a portal - shaped square steel cross - beam system is set up, which can avoid the problem of deviation of the internal support columns caused by the influence of silt geology during earth excavation, the construction safety measures are guaranteed, the square steel used can be recycled, avoiding waste of steel, the cost of the internal support back - topping reinforcement construction measures is low, saving steel resources and effectively reducing costs.

[0027] Specifically, bracket assemblies 5 for strengthening the stability of the column 2 are respectively arranged at the top and bottom of the column 2. The bracket assembly 5 includes a horizontal angle steel 51 and a vertical angle steel 52 which are arranged perpendicular to each other. The opposite ends of the horizontal angle steel 51 and the vertical angle steel 52 are fixedly connected. One side of the horizontal angle steel 51 is fixedly connected with an inclined angle steel 53. The inclined angle steel 53, the horizontal angle steel 51 and the vertical angle steel 52 form a triangle.

[0028] Further, the horizontal angle steel 51, the vertical angle steel 52, and the diagonal angle steel 53 are all made of angle steel with a specification of L100×10mm. The horizontal angle steel 51, the vertical angle steel 52, and the diagonal angle steel 53 form a triangle, and the parts where they come into contact are fully welded. The top and bottom of the column 2 are reinforced with the bracket assembly 5.

[0029] When constructing the portal-shaped internal support temporary combined back-to-top structure, first accurately locate the position of the engineering pile 4 through GPS measurement, draw the positioning diagram and displacement diagram of the engineering pile 4, and then use the engineering piles 4 on both sides of the internal support as the support for the temporary column base. Measure the diameter of the engineering pile 4, the back-to-top height of the column 2, and the length of the cross beam 1 on-site, confirm the specific dimensions of the materials for the temporary combined back-to-top structure (the length and width of the steel plate base 3, the height of the column 2, and the length of the cross beam 1) and perform cutting. The materials for the column 2 and the cross beam 1 used for the reinforcement of the ALC wallboard can be locally used as the column and cross beam of the portal-shaped back-to-top structure. Eight grade-3 steel bars with a diameter of 28 are welded at the bottom of the steel plate base 3 (the steel structure joints should be fully welded, and the weld height ≥ 6mm), and the inner ends are inserted into the engineering pile 4. The column 2 is welded and fixed on the steel plate base 3, and the column 2 and the cross beam 1 are connected by welding. The upper and lower parts of the column 2 are reinforced and fixed with the triangular angle bracket assembly 5. Then, when tying the steel bars of the foundation slab, a steel plate of 300×3mm is embedded, and the casting of the portal-shaped combined structure around the foundation slab is postponed. The finished corner-shaped waterstop steel plate is used at the corner. After the concrete pouring between the steel sheet piles of the foundation slab and the foundation pit support and the exterior wall is completed and the strength reaches 80% of the design strength, the internal support is removed. After the internal support is removed, the column 2 and the cross beam 1 on the upper part of the engineering pile 4 are cut, and the steel plate base 3 is extracted. The removed back-to-top materials in the foundation pit are hoisted to the ground by a 25t truck crane and recycled, and then the construction of the pile core of the engineering pile 4 and the foundation slab used in the back-to-top area is continued.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A door-shaped internal support temporary combined back-topping structure is applied to an internal support pipe (7) and a construction pile (4), and is characterized in that Comprising: A cross beam (1), the cross beam (1) is arranged at the bottom end of the inner support pipe (7), and the cross beam (1) is used for supporting the inner support pipe (7); A column (2), the column (2) is arranged at the end of the cross beam (1), and the column (2) is used for supporting the cross beam (1); A steel plate base (3), the steel plate base (3) is arranged at the bottom end of the column (2), and a connecting piece for connecting with the engineering pile (4) is arranged at the bottom end of the steel plate base (3).

2. The temporary combined back support structure of a door-shaped internal support according to claim 1, characterized in that One end of the cross beam (1) is fixedly connected to the outer wall of the top of the column (2), and the bottom end of the column (2) is fixedly connected to the top end of the steel plate base (3).

3. A portal-shaped internal support temporary combined back-to-top structure according to claim 1, characterized in that, The connecting piece includes a reinforcing bar (6), a penetrating groove is formed at the top end of the engineering pile (4), the reinforcing bar (6) is inserted and connected with the penetrating groove, and the top end of the reinforcing bar (6) is fixedly connected to the bottom end of the steel plate base (3).

4. A portal-shaped internal support temporary combined back-topping structure according to claim 1, characterized in that, Bracket assemblies (5) for enhancing the stability of the column (2) are respectively arranged at the top and bottom of the column (2).

5. A portal-shaped internal support temporary combined back-to-top structure according to claim 4, characterized in that, The bracket assembly (5) includes a horizontal angle steel (51) and a vertical angle steel (52) which are arranged perpendicular to each other, and the opposite ends of the horizontal angle steel (51) and the vertical angle steel (52) are fixedly connected.

6. A portal-shaped internal support temporary combined back-topping structure according to claim 5, characterized in that, An inclined angle steel (53) is fixedly connected to one side of the horizontal angle steel (51), and the inclined angle steel (53), the horizontal angle steel (51) and the vertical angle steel (52) form a triangle.

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