Combined supporting structure serving as permanent structure and construction method of combined supporting structure

Abstract

The invention relates to the technical field of foundation pit supporting combined structures, and particularly discloses a combined supporting structure serving as a permanent structure and a construction method thereof.The combined supporting structure comprises a ring beam, a column body is arranged in the ring beam, the column body is perpendicularly connected with a beam body, a cast-in-place composite floor slab is arranged between the column body and the beam body, and a construction floor slab is arranged on the lower side of the ring beam; a waist beam is arranged on the periphery of the construction floor, the beam body comprises a steel connecting part connected with the column body, a first structural rib is connected to one side of the steel connecting part, a second stirrup is arranged on the outer ring of the first structural rib, and the column body and the beam body connecting part are fixedly connected through the steel connecting part in the beam body and a latticed column in the column body through high-strength bolts. The multi-form supporting combination can be used as a permanent structure of an underground building, construction is easy, splicing is convenient, the manufacturing cost is saved, the construction progress of a main building can be accelerated, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit support composite structures, and in particular to a composite support structure as a permanent structure and a construction method thereof. Background Art

[0002] In the field of underground engineering, foundation pit engineering is an indispensable part of urban infrastructure construction, especially in the construction projects of subways, municipal roads, commercial buildings, etc. The safety of foundation pit engineering is directly related to the life safety of construction workers and the stability of the surrounding environment. In order to ensure the smooth progress of underground structure construction and the safety of the environment around the foundation pit, effective support, reinforcement and protection measures must be taken.

[0003] At present, most traditional foundation pit supports use reinforced concrete supports. The construction of reinforced concrete supports requires a lot of formwork, steel bar binding, on-site pouring and other work, which is difficult to construct and has high costs. The excavation of the foundation pit can only start after the reinforced concrete support has been cured, and the construction period is long. After the subsequent foundation pit excavation is completed, the reinforced concrete support as a temporary structure needs to be cut off on-site, the construction noise is loud, and the dust pollution is serious, resulting in a waste of resources. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The problem to be solved by the present invention is to provide a combined supporting structure as a permanent structure and a construction method thereof to overcome the defects in the prior art.

[0006] (II) Technical solution

[0007] In order to solve the technical problem, the present invention provides a combined support structure as a permanent structure, comprising a ring beam, a column is arranged inside the ring beam, a beam is vertically connected to the column, a cast-in-place composite floor is arranged between the column and the beam, a structural floor is arranged on the lower side of the ring beam, and a waist beam is arranged around the structural floor;

[0008] The beam body includes a steel connection part connected to the column body, a first structural rib is connected to one side of the steel connection part, a second stirrup is provided on the outer ring of the first structural rib, a main rib is provided on the outer ring of the second stirrup, a first stirrup is provided on the main rib, a main beam connected to both sides of the steel connection part is provided on the beam body, a first connecting piece is provided on one side of the main beam, a secondary beam steel connection part is provided on one side of the first connecting piece, and a secondary beam is provided on one side of the secondary beam steel connection part;

[0009] The cast-in-place composite floor slab includes longitudinal reinforcement, the longitudinal reinforcement is connected to transverse reinforcement perpendicular to the beam body, the transverse reinforcement is connected to a second structural reinforcement parallel to the longitudinal reinforcement, and concrete is poured between the transverse reinforcement and the longitudinal reinforcement;

[0010] The column body includes a pile body and a lattice column connected with the main beam.

[0011] Furthermore, a plurality of high-strength bolts are provided between the column and the main beam, and the plurality of high-strength bolts are located in the secondary beam steel connection portion.

[0012] Furthermore, the cross section of the ring beam is parallel to the cross section of the waist beam, the horizontal cross section of the structural floor is parallel to the horizontal cross section of the ring beam, and the structural floor has two structural forms: prefabricated and cast-in-place.

[0013] Furthermore, the axis of the column is respectively perpendicular to the axis of the main beam and the axis of the secondary beam, and the axis of the main beam is perpendicular to the axis of the secondary beam.

[0014] Furthermore, the axis of the pile body and the axis of the lattice column are located on the same straight line.

[0015] Furthermore, the axis of the main reinforcement is parallel to the axis of the first structural reinforcement, and the vertical section of the first stirrup is parallel to the vertical section of the second stirrup.

[0016] Furthermore, a cross section of the longitudinal reinforcement is parallel to a cross section of the second structural reinforcement.

[0017] Furthermore, the first structural ribs are located on both sides of the beam body, and the first structural ribs on both sides of the beam body are symmetrically arranged.

[0018] Furthermore, the first connecting member is located between the main beam and the secondary beam steel connecting portion, and a cross section of the first connecting member is perpendicular to a cross section of the secondary beam steel connecting portion.

[0019] A method for constructing a composite support structure as a permanent structure, comprising:

[0020] S1, assembling the main beam and the column, embedding the steel connection part of the main beam close to the ring beam with the steel bars of the ring beam, pre-embedding the first connection member into the ring beam, pouring the ring beam with concrete, and forming the connection part between the column and the beam body by fastening the steel connection part in the beam body and the lattice column in the column body with high-strength bolts, and then pouring concrete;

[0021] S2. Lay the cast-in-place composite floor slab in the trestle area, tie the steel bars and pour concrete. When the excavation reaches the second support position, assemble the main beam and the column, embed the steel connection of the main beam with the steel bars of the ring beam and the waist beam, embed the second connection piece into the waist beam, pour the waist beam with concrete, and pour the beam-column node to form the column and beam body connection. During this period, the construction of the main building on the ground can be carried out at the same time;

[0022] S3. When excavating to the bottom of the pit, cast the structural bottom plate in situ, construct the structural outer wall to the second support position, assemble the secondary beams, and construct the floor slab. At the same time, cast the connection nodes between the secondary beams and the main beams, the connection nodes between the beam body and the cast-in-situ composite floor slab, and the connection nodes between the secondary beams and the waist beams to form the floor slab of the second underground floor;

[0023] S4. When the outer wall of the construction structure reaches the first support position, assemble the first supporting secondary beam. After the cast-in-place composite floor is laid, tie the steel bars. At the same time, cast-in-place the connection nodes between the secondary beam and the main beam, the connection nodes between the beam body and the cast-in-place composite floor, and the connection nodes between the secondary beam and the ring beam to form the floor of the underground first floor and complete the construction.

[0024] Beneficial Effects

[0025] 1. The present invention provides a composite support structure as a permanent structure and a construction method thereof. The composite support structure is provided with a ring beam, columns and beams arranged in a vertical and horizontal cross pattern are provided inside the ring beam, a structural floor is provided on the lower side of the ring beam, a waist beam is provided around the structural floor, a steel connection portion of the main beam close to the ring beam is embedded with the ring beam steel bar, a first connection piece is pre-embedded in the ring beam, and the ring beam is cast with concrete. The composite support structure has a simple overall structure and is easy to install, so it is convenient for workers to assemble on site, and the construction is simple and maintenance-free.

[0026] 2. The present invention provides a composite support structure as a permanent structure and a construction method thereof. In the composite support structure, the connection between the column and the beam is formed by fastening the steel connection in the beam with the lattice column in the column through high-strength bolts and then casting concrete to form a whole. This fastening connection method makes the designed composite support structure more sturdy and durable. In addition, the prefabricated composite support structure can be used as a permanent structure of an underground building. Compared with the traditional reinforced concrete support structure, the composite support structure does not need to be cut off, is green and environmentally friendly, saves construction cost, and at the same time speeds up the construction progress of the main building, further saving construction time.

[0027] 3. The present invention provides a composite support structure as a permanent structure and a construction method thereof. The designed composite support structure, during the construction process, constructs the outer wall of the structure to the second support position, assembles the first support secondary beam, and after the cast-in-place composite floor is laid, steel bars are tied, and the connection nodes between the secondary beam and the main beam, the connection nodes between the beam body and the cast-in-place composite floor, and the connection nodes between the secondary beam and the ring beam are cast in-place to form the floor of the first underground floor; constructs the outer wall of the structure to the second support position, assembles the secondary beam, constructs the floor, and at the same time, the connection nodes between the secondary beam and the main beam, the connection nodes between the beam body and the structural floor, and the connection nodes between the secondary beam and the waist beam are cast in-place to form the floor of the second underground floor; the support composite structure has a simple construction process and a stable structure, which helps to provide good support for the construction of ground buildings.

[0028] 4. The present invention provides a composite supporting structure as a permanent structure and a construction method thereof. The cast-in-place composite floor slab of the designed supporting composite structure is mainly prefabricated by longitudinal reinforcement, transverse reinforcement, multiple raised structural reinforcements on the facade and concrete pouring. When laying the cast-in-place composite floor slab in the trestle area, the steel bars are first tied and then concrete pouring is used, during which the construction of the main building on the ground can be carried out simultaneously. The construction method design of the cast-in-place composite floor slab helps to reduce the number of working procedures and improve the work efficiency during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a combined support structure as a permanent structure of the present invention;

[0030] Figure 2 A schematic diagram of a column structure of a combined support structure as a permanent structure of the present invention;

[0031] Figure 3 A schematic diagram of the beam reinforcement of a combined support structure as a permanent structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the beam connection structure of a combined support structure as a permanent structure of the present invention;

[0033] Figure 5 It is a front view of a beam-column connection structure of a combined supporting structure as a permanent structure of the present invention;

[0034] Figure 6 A three-dimensional diagram of a beam-column connection structure of a combined support structure as a permanent structure of the present invention;

[0035] Figure 7 The present invention is a schematic diagram of a cast-in-place composite floor structure as a permanent structure combined support structure.

[0036] The names of the components corresponding to the various figure marks in the figure are: 1. ring beam; 2. column; 201. pile body; 202. lattice column; 3. beam body; 301. steel connection; 302. main reinforcement; 303. first stirrup; 304. first structural reinforcement; 305. second stirrup; 306. main beam; 307. first connecting piece; 308. secondary beam steel connection; 309. secondary beam; 4. cast-in-place composite slab; 401. longitudinal reinforcement; 402. transverse reinforcement; 403. second structural reinforcement; 404. concrete; 5. waist beam; 6. structural slab; 7. high-strength bolts. DETAILED DESCRIPTION

[0037] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0039] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0040] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0041] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0042] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0043] See also Figures 1 to 7 The present invention provides a combined support structure as a permanent structure, including a ring beam 1, a column 2 is arranged inside the ring beam 1, a beam 3 is vertically connected to the column 2, a cast-in-place composite floor 4 is arranged between the column 2 and the beam 3, a structural floor 6 is arranged on the lower side of the ring beam 1, and a waist beam 5 is arranged around the structural floor 6;

[0044] The beam body 3 includes a steel connection part 301 connected to the column body 2, a first structural rib 304 is connected to one side of the steel connection part 301, a second stirrup 305 is provided on the outer ring of the first structural rib 304, a main rib 302 is provided on the outer ring of the second stirrup 305, a first stirrup 303 is provided on the main rib 302, a main beam 306 connected to both sides of the steel connection part 301 is provided on the beam body 3, a first connector 307 is provided on one side of the main beam 306, a secondary beam steel connection part 308 is provided on one side of the first connector 307, and a secondary beam 309 is provided on one side of the secondary beam steel connection part 308;

[0045] The cast-in-place composite floor 4 includes a longitudinal reinforcement 401, the longitudinal reinforcement 401 is connected to a transverse reinforcement 402 perpendicular to the beam body 3, the transverse reinforcement 402 is connected to a second structural reinforcement 403 parallel to the longitudinal reinforcement 401, and concrete 404 is poured between the transverse reinforcement 402 and the longitudinal reinforcement 401;

[0046] The column body 2 includes a pile body 201 and a lattice column 202 connected to a main beam 306 .

[0047] See also Figures 1 to 6 A plurality of high-strength bolts 7 are arranged between the column 2 and the main beam 306, and the plurality of high-strength bolts 7 are located in the secondary beam steel connection portion 308. The cross section of the ring beam 1 is parallel to the cross section of the waist beam 5. The horizontal cross section of the structural floor 6 is parallel to the horizontal cross section of the ring beam 1. The structural floor 6 has two structural forms: prefabricated and cast-in-place. The axis of the column 2 is perpendicular to the axis of the main beam 306 and the secondary beam 309 respectively, the axis of the main beam 306 is perpendicular to the axis of the secondary beam 309, the axis of the pile body 201 and the axis of the lattice column 202 are located on the same straight line, the cross section of the longitudinal reinforcement 401 is parallel to the cross section of the second structural reinforcement 403, the first connecting piece 307 is located between the main beam 306 and the secondary beam steel connection portion 308, and the cross section of the first connecting piece 307 is perpendicular to the cross section of the secondary beam steel connection portion 308.

[0048] See also Figures 1 to 5The axis of the main reinforcement 302 is parallel to the axis of the first structural reinforcement 304 , and the vertical section of the first stirrup 303 is parallel to the vertical section of the second stirrup 305 .

[0049] See also Figures 1 to 3 The first structural ribs 304 are located on both sides of the beam body 3 , and the first structural ribs 304 on both sides of the beam body 3 are arranged symmetrically.

[0050] A method for constructing a composite support structure as a permanent structure, comprising:

[0051] S1, assemble the main beam 306 and the column 2, embed the steel connection part 301 of the main beam 306 close to the ring beam 1 with the steel bars of the ring beam 1, embed the first connection piece 307 into the ring beam 1, cast the ring beam 1 with concrete 404, and form the connection part between the column 2 and the beam 3 by fastening the steel connection part 301 in the beam body 3 and the lattice column 202 in the column 2 with high-strength bolts 7, and then cast with concrete 404;

[0052] S2, laying the cast-in-place composite floor 4 in the trestle area, tying the steel bars and pouring with concrete 404, when the excavation reaches the second support position, assembling the main beam 306 and the column 2, embedding the steel connection part 301 of the main beam 306 with the steel bars of the ring beam 1 and the waist beam 5, pre-embedding the second connection piece into the waist beam 5, pouring the waist beam 5 with concrete 404; and pouring the beam-column node to form the connection part between the column 2 and the beam body 3, during which the construction of the main building on the ground can be carried out at the same time;

[0053] S3, when excavating to the bottom of the pit, cast the structural bottom plate in situ, construct the structural outer wall to the second support position, assemble the secondary beam 309, and construct the floor 6. At the same time, cast the connection nodes between the secondary beam 309 and the main beam 306, the connection nodes between the beam body 3 and the cast-in-situ composite floor 4, and the connection nodes between the secondary beam 309 and the waist beam 5 in situ to form the floor of the second underground floor;

[0054] S4. When the outer wall of the construction structure reaches the first supporting position, assemble the first supporting secondary beam 309. After the cast-in-place composite floor 4 is laid, tie the steel bars. At the same time, cast-in-place the connection nodes between the secondary beam 309 and the main beam 306, the connection nodes between the beam body 3 and the cast-in-place composite floor 4, and the connection nodes between the secondary beam 309 and the ring beam 1 are formed to form the floor of the underground layer, and the construction is completed.

[0055] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0056] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A composite support structure as a permanent structure, characterized in that: The invention comprises a ring beam (1), wherein a column (2) is arranged inside the ring beam (1), the column (2) is vertically connected to a beam (3), a cast-in-place composite floor (4) is arranged between the column (2) and the beam (3), a structural floor (6) is arranged on the lower side of the ring beam (1), and a waist beam (5) is arranged around the structural floor (6); The beam body (3) comprises a steel connection part (301) connected to the column body (2), one side of the steel connection part (301) is connected to a first structural rib (304), the outer ring of the first structural rib (304) is provided with a second stirrup (305), the outer ring of the second stirrup (305) is provided with a main rib (302), the main rib (302) is provided with a first stirrup (303), the beam body (3) is provided with a main beam (306) connected to both sides of the steel connection part (301), one side of the main beam (306) is provided with a first connecting piece (307), one side of the first connecting piece (307) is provided with a secondary beam steel connection part (308), and one side of the secondary beam steel connection part (308) is provided with a secondary beam (309); The cast-in-place composite floor slab (4) comprises longitudinal reinforcement (401), the longitudinal reinforcement (401) is connected to transverse reinforcement (402) perpendicular to the beam body (3), the transverse reinforcement (402) is connected to a second structural reinforcement (403) parallel to the longitudinal reinforcement (401), and concrete (404) is poured between the transverse reinforcement (402) and the longitudinal reinforcement (401); The column (2) comprises a pile body (201) and a lattice column (202) connected to the main beam (306).

2. A combined support structure as a permanent structure according to claim 1, characterized in that: A plurality of high-strength bolts (7) are arranged between the column (2) and the main beam (306), and the plurality of high-strength bolts (7) are located in the secondary beam steel connection portion (308).

3. A combined support structure as a permanent structure according to claim 1, characterized in that: The cross section of the ring beam (1) is parallel to the cross section of the waist beam (5), the horizontal cross section of the structural floor slab (6) is parallel to the horizontal cross section of the ring beam (1), and the structural floor slab (6) has two structural forms: prefabricated and cast-in-place.

4. A combined support structure as a permanent structure according to claim 1, characterized in that: The axis of the column (2) is respectively perpendicular to the axis of the main beam (306) and the axis of the secondary beam (309), and the axis of the main beam (306) is perpendicular to the axis of the secondary beam (309).

5. A combined support structure as a permanent structure according to claim 1, characterized in that: The axis of the pile body (201) and the axis of the lattice column (202) are located on the same straight line.

6. A combined support structure as a permanent structure according to claim 1, characterized in that: The axis of the main reinforcement (302) is parallel to the axis of the first structural reinforcement (304), and the vertical section of the first stirrup (303) is parallel to the vertical section of the second stirrup (305).

7. A combined support structure as a permanent structure according to claim 1, characterized in that: The cross section of the longitudinal reinforcement (401) is parallel to the cross section of the second structural reinforcement (403).

8. A combined support structure as a permanent structure according to claim 1, characterized in that: The first structural ribs (304) are located on both sides of the beam body (3), and the first structural ribs (304) on both sides of the beam body (3) are symmetrically arranged.

9. A combined support structure as a permanent structure according to claim 1, characterized in that: The first connecting member (307) is located between the main beam (306) and the secondary beam steel connecting portion (308), and the cross section of the first connecting member (307) is perpendicular to the cross section of the secondary beam steel connecting portion (308).

10. A construction method of a combined support structure as a permanent structure, applied to a combined support structure as a permanent structure as claimed in any one of claims 1 to 9, characterized in that: include: S1, assembling the main beam (306) and the column (2), embedding the steel connection part (301) of the main beam (306) close to the ring beam (1) with the steel bars of the ring beam (1), pre-embedding the first connection member (307) into the ring beam (1), casting the ring beam (1) with concrete (404), fastening and connecting the steel connection part (301) in the beam body (3) and the lattice column (202) in the column (2) with high-strength bolts (7), and casting with concrete (404), thereby forming a connection part between the column (2) and the beam body (3); S2, laying the cast-in-place composite floor slab (4) in the trestle area, tying the steel bars and pouring with concrete (404), when the excavation reaches the second support position, assembling the main beam (306) and the column (2), embedding the steel connection part (301) of the main beam (306) with the steel bars of the ring beam (1) and the waist beam (5), pre-embedding the second connection piece into the waist beam (5), and pouring the waist beam (5) with concrete (404); and pouring the beam-column node to form the connection part between the column (2) and the beam body (3), during which the construction of the main building on the ground can be carried out at the same time; S3, when excavating to the bottom of the pit, cast the structural bottom plate in situ, construct the structural outer wall to the second support position, assemble the secondary beam (309), and construct the floor slab (6). At the same time, cast the connection nodes between the secondary beam (309) and the main beam (306), the connection nodes between the beam body (3) and the cast-in-situ composite floor slab (4), and the connection nodes between the secondary beam (309) and the waist beam (5) in situ to form the floor slab of the second underground floor; S4. When the outer wall of the construction structure reaches the first support position, assemble the first supporting secondary beam (309). After the cast-in-place composite floor slab (4) is laid, tie the steel bars. At the same time, cast-in-place is performed on the connection nodes between the secondary beam (309) and the main beam (306), the connection nodes between the beam body (3) and the cast-in-place composite floor slab (4), and the connection nodes between the secondary beam (309) and the ring beam (1) to form the floor slab of the underground first floor, thus completing the construction.

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