Construction method of upper-supporting and lower-hanging double-tower corridor

Abstract

The invention belongs to the field of building construction, and particularly relates to an upper-supporting and lower-hanging double-tower corridor construction method. An upper-supporting and lower-hanging double-tower corridor construction method is used for construction of two corridors on the front side and the rear side between double towers and is characterized by specifically comprising the following steps that S1, after basement plates are completely capped, preparation work before corridor splicing is carried out; s2, corridor splicing operation is conducted through a truck crane and a tower crane; s3, after the corridor is assembled, trial lifting is conducted, and a corridor side curtain wall integrated structure is installed; s4, the corridors are accumulated and lifted, and construction of a lower hanging structure is inserted in the lifting process; s5, after the corridor and the curtain wall integrated structure attached to the corridor are lifted in place, rod pieces are embedded, and unloading is conducted; and S6, after corridor floor slab pouring is completed, upward supporting structure construction is conducted. The construction sequence is comprehensively considered, so that all the structures are reasonably connected, the construction efficiency can be remarkably improved, the construction period can be shortened, and meanwhile the construction quality can be guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of building construction, and specifically relates to a construction method for a double-tower connecting corridor with an upper support and a lower suspension. Background Art

[0002] The construction of the connecting corridor between two towers refers to the construction process of a horizontal or inclined structure (connecting corridor) connecting two independent high-rise buildings (such as twin towers, super high-rise buildings). Such connecting corridors are usually located in the middle upper part or at the top of the two towers, and their main functions are to enhance the structural stability of the two towers, provide traffic or viewing spaces, or achieve architectural aesthetic design. The double-tower connecting corridor with an upper support and a lower suspension refers to a connecting corridor with an upper support structure and a lower suspension structure. Existing construction methods for the upper support and lower suspension connecting corridors have problems such as unreasonable construction sequences and low construction efficiency, thus seriously affecting the construction period. Therefore, there is an urgent need to design a construction method for the double-tower connecting corridor with an upper support and a lower suspension that has a reasonable construction sequence and high construction efficiency. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a construction method for a double-tower connecting corridor with an upper support and a lower suspension, and specifically discloses the following technical solutions:

[0004] A construction method for a double-tower connecting corridor with an upper support and a lower suspension, which is used for the construction of two connecting corridors on the front and back sides between two towers, specifically includes the following steps:

[0005] S1. After the basement slab is completely capped, carry out the preparatory work before the assembly of the connecting corridor;

[0006] S2. Use a truck crane and a tower crane to carry out the assembly operation of the connecting corridor;

[0007] S3. After the assembly of the connecting corridor is completed, conduct a trial lift and install the integrated structure of the side curtain wall of the connecting corridor;

[0008] S4. Cumulatively lift the connecting corridor and insert the construction of the lower suspension structure during the lifting process;

[0009] S5. After the connecting corridor and the integrated curtain wall structure attached to the connecting corridor are lifted in place, insert the rods and unload;

[0010] S6. Carry out the construction of the upper support structure after the casting of the floor slab of the connecting corridor is completed.

[0011] Further, the preparatory work before the assembly of the connecting corridor in step S1 includes site leveling and installation of the assembly distribution beam.

[0012] Further, in step S2, the connecting corridors on the front and back sides are assembled synchronously on the plus-minus zero floor surface, and each connecting corridor is installed layer by layer in the order from bottom to top, from the middle to both sides, and first the main beam and then the secondary beam.

[0013] Further, the specific steps of the assembly of the connecting corridor are as follows:

[0014] A1. Use a tower crane to install the connecting corridor distribution beam and the small pier under the hanging column;

[0015] A2. Assemble the hanging column head and the main beam between the column heads from the middle to both sides;

[0016] A3. After the main beam assembly is completed, unload and remove the small pier under the hanging column, so that the weight of the main beam is all transferred to the distribution beam, and then assemble the secondary beam, the cantilever beam and the horizontal side beam;

[0017] A4. Assemble the middle hanging column and the lower chord node;

[0018] A5. Assemble the lower chord rod of the truss between the hanging columns and the corresponding horizontal connecting members, and gradually install the remaining members from the middle to both sides;

[0019] A6. After the assembly of the lower chord layer of the truss is completed, assemble the middle truss vertical rod and the diagonal web member, and install the connecting rod between them in time;

[0020] A7. Assemble the connecting steel beam between the vertical rod and the diagonal web member, and install the remaining truss members and horizontal connecting members from the middle to both sides;

[0021] A8. Repeat steps A6 - A7 to complete the assembly of the connecting corridor.

[0022] Furthermore, the specific installation steps of the hanging structure are as follows:

[0023] B1. Divide the area according to the form, installation idea and line type of the hanging structure;

[0024] B2. After the first lift of the connecting corridor, insert the construction and installation of the hanging structure;

[0025] B3. After the installation of the hanging structure in the previous area is completed, carry out the lift of the connecting corridor and the installation of the hanging structure in the next area;

[0026] B4. After the installation of the hanging structure is completed, lift the integral structure of the connecting corridor, the connected body area and the curtain wall of the hanging area in place.

[0027] Furthermore, in step B1, the hanging structure is divided into three areas: the high area, the middle area and the low area, and in step B3, the installation is carried out in the order of high area - middle area - low area.

[0028] Furthermore, in step S4, the lifting method of synchronously lifting the connecting corridors on both sides and lifting the single - side connecting corridor in stages is adopted.

[0029] Furthermore, the construction steps of the truss in the upper support area are specifically as follows:

[0030] C1. Set up the support falsework and assemble the pipe truss unit;

[0031] C2. Install the upper ridge from both sides to the middle in sections;

[0032] C3. Install the pipe truss units starting from both sides;

[0033] C4. Install the horizontal connecting rods between the first - layer pipe truss and the tower;

[0034] C5. Install the horizontal connecting rods between the pipe truss and the tower in sequence;

[0035] C6. Install the wind - resistant truss;

[0036] C7. Install the partition;

[0037] C8. Install the second - section pipe truss;

[0038] C9. Install the third - section pipe truss;

[0039] C10. Remove the temporary support scaffolds.

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0041] The present invention takes overall consideration in the construction sequence, enabling reasonable connection of each structure, significantly improving the construction efficiency, shortening the construction period, and at the same time ensuring the construction quality. Brief Description of the Drawings

[0042] Figure 1 It is a flow chart of the present invention.

[0043] Figure 2 It is a construction schematic diagram of step S1 in Embodiment 1.

[0044] Figure 3 It is a construction schematic diagram of step S2 in Embodiment 1.

[0045] Figure 4 It is a construction schematic diagram of step S3 in Embodiment 1.

[0046] Figure 5 It is a construction schematic diagram of step S4 in Embodiment 1.

[0047] Figure 6 It is a construction schematic diagram of step S5 in Embodiment 1.

[0048] Figure 7 It is a construction schematic diagram of step S6 in Embodiment 1.

[0049] Figure 8 It is a construction schematic diagram of step S7 in Embodiment 1.

[0050] Figure 9 It is a construction schematic diagram of step S8 in Embodiment 1.

[0051] Figure 10 It is a construction schematic diagram of step A1 in Example 1.

[0052] Figure 11 It is a construction schematic diagram of step A2 in Example 1.

[0053] Figure 12 It is a construction schematic diagram of step A3 in Example 1.

[0054] Figure 13 It is a construction schematic diagram of step A4 in Example 1.

[0055] Figure 14 It is a construction schematic diagram of step A5 in Example 1.

[0056] Figure 15 It is a construction schematic diagram of step A6 in Example 1.

[0057] Figure 16 It is a construction schematic diagram of step A7 in Example 1.

[0058] Figure 17 It is a construction schematic diagram of step A8 in Example 1.

[0059] Figure 18 It is a construction schematic diagram of step C1 in Example 1.

[0060] Figure 19 It is a construction schematic diagram of step C2 in Example 1.

[0061] Figure 20 It is a construction schematic diagram of step C3 in Example 1.

[0062] Figure 21 It is a construction schematic diagram of step C4 in Example 1.

[0063] Figure 22 It is a construction schematic diagram of step C5 in Example 1.

[0064] Figure 23 It is a construction schematic diagram of step C6 in Example 1.

[0065] Figure 24 It is a construction schematic diagram of step C7 in Example 1.

[0066] Figure 25 It is a construction schematic diagram of step C8 in Example 1.

[0067] Figure 26 It is a construction schematic diagram of step C9 in Example 1.

[0068] Figure 27 It is a construction schematic diagram of step C10 in Example 1. Specific implementation mode

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0070] A construction method for a double-tower connecting corridor with upper support and lower suspension is used for the construction of two connecting corridors on the front and back sides between two towers, and specifically includes the following steps:

[0071] S1. After the basement slab is completely capped, carry out the preparatory work before the connecting corridor assembly;

[0072] S2. Use a truck crane and a tower crane to carry out the connecting corridor assembly operation;

[0073] S3. After the connecting corridor assembly is completed, conduct a trial lift and install the integrated structure of the connecting corridor side curtain wall;

[0074] S4. Cumulatively lift the connecting corridor and insert the construction of the lower suspension structure during the lifting process;

[0075] S5. After the connecting corridor and the integrated curtain wall structure attached to the connecting corridor are lifted in place, insert the rods and unload;

[0076] S6. Carry out the construction of the upper support structure after the connecting corridor floor slab is poured.

[0077] Specifically, the preparatory work before the connecting corridor assembly in step S1 includes site leveling layout and installation of assembly distribution beams.

[0078] Specifically, in step S2, the connecting corridors on the front and back sides are assembled synchronously on the plus-minus zero floor slab, and each connecting corridor is installed layer by layer in the order from bottom to top, from the middle to both sides, and first the main beam and then the secondary beam.

[0079] Specifically, the specific steps of the connecting corridor assembly are as follows:

[0080] A1. Use a tower crane to install the connecting corridor distribution beam and the small pier under the hanging column;

[0081] A2. Assemble the hanging column head and the main beam between the column heads from the middle to both sides;

[0082] A3. After the main beam assembly is completed, unload and remove the small pier under the hanging column, so that the weight of the main beam is completely transferred to the distribution beam, and then assemble the secondary beam, the cantilever beam and the horizontal side beam;

[0083] A4. Assemble the middle hanging column and the lower chord node;

[0084] A5. Assemble the lower chord bars of the truss between the assembled and suspended columns and the corresponding horizontal connecting bars, and gradually install the remaining bars from the middle to both sides;

[0085] A6. After the assembly of the lower chord layer of the truss is completed, assemble the vertical bars and diagonal web members of the middle truss, and install the connecting bars between them in a timely manner;

[0086] A7. Assemble the connecting steel beams between the vertical bars and diagonal web members, and install the remaining truss bars and horizontal connecting bars from the middle to both sides;

[0087] A8. Repeat steps A6 - A7 to complete the assembly of the connecting corridor.

[0088] Specifically, the specific installation steps of the hanging structure are as follows:

[0089] B1. Divide the area according to the form, installation idea and linearity of the hanging structure;

[0090] B2. After the first lift of the connecting corridor, insert the construction and installation of the hanging structure;

[0091] B3. After the installation of the hanging structure in the previous area is completed, carry out the lift of the connecting corridor and the installation of the hanging structure in the next area;

[0092] B4. After the installation of the hanging structure is completed, lift the integral structure of the connecting corridor, the connected body area and the curtain wall of the hanging area in place.

[0093] Specifically, in step B1, the hanging structure is divided into three areas: the high area, the middle area and the low area, and in step B3, the installation is carried out in the order of high area - middle area - low area.

[0094] Specifically, in step S4, the synchronous lift of the connecting corridors on both sides and the staged lift of a single connecting corridor are adopted.

[0095] Specifically, the construction steps of the truss in the upper support area are as follows:

[0096] C1. Set up the support falsework and assemble the pipe truss units;

[0097] C2. Install the upper ridge in sections from both sides to the middle;

[0098] C3. Install the pipe truss units from both sides;

[0099] C4. Install the horizontal connecting bars between the first - layer pipe truss and the tower;

[0100] C5. Install the horizontal connecting bars between the pipe truss and the tower in sequence;

[0101] C6. Install the wind - resistant truss;

[0102] C7. Install the partition;

[0103] C8. Install the second pipe truss;

[0104] C9. Install the third pipe truss;

[0105] C10. Demolish the temporary support scaffold.

[0106] Example 1

[0107] Refer to Figure 2-27 , the red part in the attached drawings is the part under construction in the corresponding steps. This example includes two towers in the east and west, which are connected by large-span outward-expanded arc-shaped corridors on the north and south sides of the 19th - 23rd floors of the towers. The corridor has a total of three structural layers, where the 19th floor is the hanging layer, and the 20th - 23rd floors are the truss layers. Among them, the 19th floor is 6m high, the 20th and 22nd floors are 9m high, and the overall height of the corridor is 24.9m. The weight of a single-sided corridor is about 2400t, and the total weight of the two-sided corridors is about 4800t. The corridor structures on the north and south sides are independent of each other, but have the same structural form. The inner span of the corridor is about 52m, and the outer span of the corridor is about 78m. Its construction method includes the following steps:

[0108] S1. After the basement slab is completely capped, carry out the preparatory work before the corridor assembly;

[0109] S2. Use truck cranes and tower cranes to carry out the corridor assembly operation;

[0110] S3. After the corridor assembly is completed, conduct a trial lift and install the integrated structure of the corridor side curtain wall; at this stage, the first-constructed area of the podium is capped, and the construction of the south and west skirts starts to be inserted;

[0111] S4. Cumulatively lift the corridor and insert the construction of the hanging structure during the lifting process. During this process, the skirts are continuously installed;

[0112] S5. After the corridor and the integrated curtain wall structure attached to the corridor are lifted in place, insert the members and unload;

[0113] S6. After the corridor floor slab is poured, carry out the construction of the supporting structure. At this time, the skirt construction is completed;

[0114] S7. After the later-constructed area of the podium is capped, insert the construction of the east skirt, skylight, and north skirt;

[0115] S8. Wait until the subway reserved area is capped, and insert the construction of the skirt in the subway passage reserved area (the core tubes and outer frames of the east and west towers are all capped).

[0116] Specifically, the preparatory work before the corridor assembly in step S1 includes site leveling and installation of the assembly distribution beams.

[0117] Specifically, in step S2, the corridors on the front and rear sides are assembled synchronously on the plus-minus zero floor slab, and each corridor is installed layer by layer in the order from bottom to top, from the middle to both sides, with the main beams installed first and then the secondary beams.

[0118] Specifically, the specific steps for corridor assembly are as follows:

[0119] A1. Use a tower crane to install the corridor distribution beams and the small piers under the hanging columns;

[0120] A2. Assemble the hanging column heads and the main beams between the heads from the middle to both sides on the 19th floor first;

[0121] A3. After the main beam assembly is completed, unload and remove the small piers under the hanging columns so that the entire weight of the main beam is transferred to the distribution beams, and then assemble the secondary beams, cantilever beams, and horizontal side beams;

[0122] A4. Assemble the middle hanging columns and the lower chord nodes on the 19th floor;

[0123] A5. Assemble the lower chord rods of the trusses between the hanging columns and the corresponding horizontal connecting members, and gradually install the remaining members from the middle to both sides;

[0124] A6. After the assembly of the lower chord layer of the truss is completed, assemble the middle truss vertical rods and diagonal web members to the 21st floor, and install the connecting rods between them in a timely manner;

[0125] A7. Assemble the connecting steel beams between the vertical rods and diagonal web members, and install the remaining truss members and horizontal connecting members from the middle to both sides to complete the installation of the truss on the 21st floor;

[0126] A8. Repeat steps A6 - A7 to complete the corridor assembly.

[0127] Specifically, the specific installation steps for the hanging structure are as follows:

[0128] B1. Divide the hanging structure into three zones: high zone, middle zone, and low zone according to the form, installation idea, and line type of the hanging structure;

[0129] B2. After the first lift of the corridor, insert the construction and installation of the hanging structure;

[0130] B3. After the installation of the hanging structure in the previous zone is completed, carry out the corridor lift and the installation of the hanging structure in the next zone;

[0131] B4. After the installation of the hanging structure is completed, lift the integrated structure of the corridor, the connected body area, and the curtain wall in the hanging area to the designated position.

[0132] Specifically, in step B1, the hanging structure is divided into three zones: high zone, middle zone, and low zone, and in step B3, the installation is carried out in the order of high zone - middle zone - low zone.

[0133] Specifically, in step S4, the lifting method of synchronously lifting the two-sided corridors and stage-by-stage lifting of the single-sided corridors is adopted.

[0134] Specifically, the construction steps of the upper support area truss are as follows:

[0135] C1. Set up the support falsework and assemble the pipe truss units;

[0136] C2. Install the upper ridge from both sides to the middle in sections;

[0137] C3. Install the pipe truss units starting from both sides;

[0138] C4. Install the horizontal connecting rods between the first-layer pipe truss and the tower;

[0139] C5. Install the horizontal connecting rods between the pipe truss and the tower in sequence;

[0140] C6. Install the wind-resistant truss;

[0141] C7. Install the partition;

[0142] C8. Install the second-section pipe truss;

[0143] C9. Install the third-section pipe truss;

[0144] C10. Remove the temporary support falsework.

[0145] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims

1. A construction method for a double-tower connecting corridor with upper support and lower suspension, which is used for the construction of two connecting corridors on the front and back sides between two towers, and is characterized in that, Specifically, it includes the following steps: S1. After the basement slab is completely capped, carry out the preparatory work before the corridor assembly; S2. Use a truck crane and a tower crane to carry out the corridor assembly operation; S3. After the corridor assembly is completed, conduct a trial lift and install the integrated structure of the side curtain wall of the corridor; S4. Cumulatively lift the corridor and insert the construction of the hanging structure during the lifting process; S5. After the corridor and the integrated curtain wall structure attached to the corridor are lifted in place, insert the rods and unload; S6. After the corridor floor slab is poured, carry out the construction of the supporting structure.

2. The construction method of an upper-supported and lower-hung double-tower connecting corridor according to claim 1, wherein, The preparatory work before the corridor assembly in step S1 includes site leveling layout and installation of assembly distribution beams.

3. A construction method for an upper-supported and lower-hung double-tower connecting corridor according to claim 1, characterized in that In step S2, the corridors on the front and back sides are assembled synchronously on the plus-minus zero floor slab surface, and each corridor is installed layer by layer in the order from bottom to top, from the middle to both sides, and first the main beams and then the secondary beams.

4. A construction method for an upper-supported and lower-suspended double-tower connecting corridor according to claim 3, characterized in that, The specific steps of the corridor assembly are as follows: A1. Use a tower crane to install the corridor distribution beam and the small pier under the hanging column; A2. Assemble the hanging column heads and the main beams between the heads from the middle to both sides; A3. After the main beam assembly is completed, unload and remove the small pier under the hanging column so that the weight of the main beam is completely transferred to the distribution beam, and then assemble the secondary beams, cantilever beams and horizontal side beams; A4. Assemble the middle hanging column and the lower chord node; A5. Assemble the lower chord rods of the truss between the hanging columns and the corresponding horizontal connecting rods, and gradually install the remaining rods from the middle to both sides; A6. After the lower chord layer of the truss is assembled, assemble the middle truss vertical rods and diagonal web members, and install the connecting rods between them in a timely manner; A7. Assemble the connecting steel beams between the vertical rods and diagonal web members, and install the remaining truss rods and horizontal connecting rods from the middle to both sides; A8. Repeat steps A6 - A7 to complete the corridor assembly.

5. A construction method for an upper-supported and lower-suspended double-tower connecting corridor according to claim 1, characterized in that, The specific installation steps of the hanging structure are as follows: B1. Divide the area according to the form, installation idea and line type of the hanging structure; B2. After the first lift of the corridor, insert the construction and installation of the hanging structure; B3. After the installation of the hanging structure in the previous area is completed, carry out the corridor lift and the installation of the hanging structure in the next area; B4. After the installation of the hanging structure is completed, lift the corridor, the integrated curtain wall structure of the connected body area and the hanging area in place as a whole.

6. A construction method for an upper-supported and lower-hung double-tower connecting corridor according to claim 5, characterized in that, In step B1, the hanging structure is divided into three areas: high area, middle area and low area, and in step B3, the installation is carried out in the order of high area - middle area - low area.

7. A construction method for an upper-supported and lower-suspended double-tower connecting corridor according to claim 1, characterized in that, In step S4, a lifting method of synchronous lifting of the two-side corridors and staged lifting of a single-side corridor is adopted.

8. A construction method for an upper-supported and lower-hung double-tower connecting corridor according to claim 1, characterized in that, The construction steps of the truss in the supporting area are specifically as follows: C1. Set up a support falsework and assemble the pipe truss unit; C2. Install the upper ridge from both sides to the middle in sections; C3. Install the pipe truss unit from both sides; C4. Install the horizontal connecting rod between the first-layer pipe truss and the tower; C5. Install the horizontal connecting rods between the pipe truss and the tower in sequence; C6. Install the wind-resistant truss; C7. Install the partition; C8. Install the second-section pipe truss; C9. Install the third-section pipe truss; C10. Remove the temporary support falsework.

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