An assembled underground station vertical wall opening structure and construction method

Abstract

The present invention provides a prefabricated underground station vertical wall opening structure and construction method, including a hole top concrete block, a hole bottom concrete block and a frame body, the hole bottom concrete block is arranged on the concrete wall, and the frame body is located between the hole top concrete block and the hole bottom concrete block, the hole bottom concrete block includes a first hole bottom concrete block, a second hole bottom concrete block and a third hole bottom concrete block, and there are several second hole bottom concrete blocks and they are sequentially arranged between the first hole bottom concrete block and the third hole bottom concrete block; the frame body includes columns and top beams, the frame body is formed by welding the tops of the columns on both sides to the two ends of the top beam, the frame body pipe body is filled with concrete, the bottom surface of each second hole top concrete block is pre-embedded with a channel steel, and the outer side walls of the frame body are welded to the contacting channel steels. The present invention realizes the full assembly of prefabricated components of the vertical wall opening structure, and the quality of the prefabricated component concrete is controllable, can be mass-produced, and has uniform quality.

Description

Technical Field

[0001] The invention belongs to the field of underground structure engineering, and particularly relates to an assembled underground station vertical wall opening structure and a construction method thereof. Background Technique

[0002] At present, the government is vigorously promoting prefabricated buildings. The development of prefabricated buildings is of great significance for promoting the transformation of building construction methods, ensuring the quality and safety of project construction, and promoting the transformation and upgrading of the building industry. Compared with the traditional cast-in-place concrete structure system, the precast concrete structure system has the advantages of saving resources and energy, reducing construction pollution, improving labor productivity and quality and safety levels, and being conducive to promoting the deep integration of construction with informatization and industrialization. It is expected to gradually become a new structure system actively recommended by all parties participating in the construction market in the future. The precast and assembled structure has achieved good application effects in building construction projects. However, due to the complexity of the underground engineering construction environment and technology, and the harsh requirements for the waterproof and seismic performance of the structure, there are still many problems in the application of the precast and assembled structure in underground engineering. Therefore, the research on the design theory and method of the precast and assembled structure system for underground engineering will be an important research direction for the development of underground structure industrialized construction technology. Summary of the Invention

[0003] The problem to be solved by the invention is to provide an assembled underground station vertical wall opening structure and a construction method thereof, which are particularly helpful for users to facilitate the assembly construction of concrete precast components.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: to provide an assembled underground station vertical wall opening structure and a construction method, including a hole top concrete block, a hole bottom concrete block and a frame body, the hole bottom concrete block is arranged on the concrete wall, and the frame body is located between the hole top concrete block and the hole bottom concrete block, the hole bottom concrete block includes a first hole bottom concrete block, a second hole bottom concrete block and a third hole bottom concrete block, the second hole bottom concrete block has a plurality of and is sequentially arranged between the first hole bottom concrete block and the third hole bottom concrete block; the hole top concrete block includes a first hole top concrete block, a second hole top concrete block and a third hole bottom concrete block There are three cave top concrete blocks, and the second cave top concrete blocks are arranged in sequence between the first cave top concrete block and the third cave top concrete block. The frame body includes columns and top beams. The columns and top beams are rectangular steel pipe structures welded by steel plates, and the frame body is welded by the top of the columns on both sides and the two ends of the top beam. The frame body is filled with concrete. The bottom surface of each second cave top concrete block is pre-embedded with channel steel, and the first cave top concrete block, the third cave top concrete block, the first cave bottom concrete block and the third cave bottom concrete block are pre-embedded with channel steel towards the frame body side, and the outer side wall of the frame body is welded to the contacting channel steel. The first cave bottom concrete block, the second cave bottom concrete block and the third cave bottom concrete block are connected by the third prestressed threaded steel bar; the first cave top concrete block, the second cave top concrete block and the third cave top concrete block are connected by the fourth prestressed threaded steel bar; the first cave bottom concrete block and the first cave top concrete block are connected by the second prestressed threaded steel bar, and the third cave bottom concrete block and the third cave top concrete block are connected by the second prestressed threaded steel bar. A plurality of first prestressed threaded steel bars are used to reinforce the connection between the top beam of the frame body and the first cave top concrete block, the second cave top concrete block and the third cave top concrete block.

[0005] The construction steps are:

[0006] Step 1: After the construction reaches the opening of the side wall, the first hole bottom concrete block, the second hole bottom concrete block and the third hole bottom concrete block are positioned and assembled in sequence;

[0007] Step 2: Use the third prestressed threaded steel bar to horizontally connect the first hole bottom concrete block, the second hole bottom concrete block and the third hole bottom concrete block near the hole opening to form a hidden beam at the hole opening;

[0008] Step 3: hoisting components of the frame body;

[0009] Step 4: Set up temporary steel supports under the frame body components;

[0010] Step 5: hoist and position the first cave top concrete block, the second cave top concrete block and the third cave top concrete block;

[0011] Step 6: Vertically connect the first bottom concrete block of the hole with the first top concrete block of the hole, and the third bottom concrete block of the hole with the third top concrete block of the hole respectively through the second prestressed threaded steel bars, so as to form the concealed columns on both sides of the hole;

[0012] Step 7: Horizontally connect the first top concrete block of the hole, the second top concrete block of the hole and the third top concrete block of the hole through the fourth prestressed threaded steel bars, so as to form the concealed top beam of the hole;

[0013] Step 8: Weld the top beam of the frame body to the channel steels embedded at the bottom of the first top concrete block of the hole, the second top concrete block of the hole and the third top concrete block of the component in a continuous length. After welding the top beam of the frame body to the channel steels embedded on the sides of the first bottom concrete block of the hole, the first top concrete block of the hole, the third bottom concrete block of the hole and the third top concrete block of the hole in a continuous length, connect the columns of the frame body with the ring frame beam of the hole;

[0014] Step 9: Remove the temporary steel support members;

[0015] Step 10: Connect the top beam of the frame body with the first top concrete block of the hole, the second top concrete block of the hole and the third top concrete block of the hole through the prestressed threaded steel bars to enhance the overall stiffness and strength of the ring frame beam of the hole.

[0016] The advantages and positive effects of the present invention are as follows: By adopting the above technical solutions, the full assembly of precast components for the structure with a hole in the vertical wall is realized. The concrete quality of the precast components is controllable, can be mass-produced, and has uniform quality; there is no wet connection project on site, reducing environmental pollution and being green and environmentally friendly; the construction period is short and the construction accuracy is high. Description of the Drawings

[0017] Figure 1 is the elevation view of the structure with a hole in the vertical wall of the present invention;

[0018] Figure 2 is the sectional view of the structure with a hole in the vertical wall at section A-A in the construction stage of the present invention;

[0019] Figure 3 is the sectional view of the structure with a hole in the vertical wall at section A-A in the service stage of the present invention;

[0020] Figure 4 is the elevation view of the reinforced concrete beam-column frame of the present invention;

[0021] Figure 5 is the engineering structure diagram of the first and second steps of the construction method of the present invention;

[0022] Figure 6 is the engineering structure diagram of the third step of the construction method of the present invention;

[0023] Figure 7It is the engineering structure diagram of the fourth step of the construction method of the present invention;

[0024] Figure 8 It is the engineering structure diagram of the fifth step of the construction method of the present invention;

[0025] Figure 9 It is the engineering structure diagram of the sixth to eighth steps of the construction method of the present invention;

[0026] Figure 10 It is the engineering structure diagram of the ninth and tenth steps of the construction method of the present invention.

[0027] In the figure:

[0028] 1. First bottom concrete block, 2. Second bottom concrete block, 3. Third bottom concrete block

[0029] 4. First top concrete block, 5. Second top concrete block, 6. Third top concrete block

[0030] 7. Frame body, 71. Column, 72. Top beam

[0031] 8. Steel support member, 9. Channel steel, 10. First prestressed threaded steel

[0032] 11. Second prestressed threaded steel, 12. Third prestressed threaded steel, 13. Fourth prestressed threaded steel Detailed implementation manner

[0033] Such as Figure 1-10As shown, the present invention is an assembled underground station vertical wall opening structure and construction method, including a cave top concrete block, a cave bottom concrete block and a frame body 7, the cave bottom concrete block is arranged on the concrete wall, and the frame body 7 is located between the cave top concrete block and the cave bottom concrete block, the cave bottom concrete block includes a first cave bottom concrete block 1, a second cave bottom concrete block 2 and a third cave bottom concrete block 3, the second cave bottom concrete block 2 has a plurality of and is sequentially arranged between the first cave bottom concrete block 1 and the third cave bottom concrete block 3; the cave top concrete block includes a first cave top concrete block 4, a second cave top concrete block 5 and a third cave top concrete block 6, the second cave top concrete block 5 There are several of them which are arranged in sequence between the first cave top concrete block 4 and the third cave top concrete block 6. The frame body 7 includes columns 71 and top beams 72. The columns 71 and top beams 72 are rectangular steel pipe structures welded with steel plates, and the frame body 7 is welded by the tops of the columns 71 on both sides and the two ends of the top beams 72. The tube body of the frame body 7 is filled with concrete. The bottom surface of each second cave top concrete block 5 is pre-embedded with a channel steel 9, and the first cave top concrete block 4, the third cave top concrete block 6, the first cave bottom concrete block 1 and the third cave bottom concrete block 3 are all pre-embedded with channel steels 9 facing the frame body 7, and the outer side walls of the frame body 7 are welded to the contacting channel steels 9. The first hole bottom concrete block 1, the second hole bottom concrete block 2 and the third hole bottom concrete block 3 are connected by the third prestressed threaded steel bar 12; the first hole top concrete block 4, the second hole top concrete block 5 and the third hole top concrete block 6 are connected by the fourth prestressed threaded steel bar 13; the first hole bottom concrete block 1 and the first hole top concrete block 4 are connected by the second prestressed threaded steel bar 11, and the third hole bottom concrete block 3 and the third hole top concrete block 6 are connected by the second prestressed threaded steel bar 11. The top beam 72 of the frame body 7 is connected to the first hole top concrete block 4, the second hole top concrete block 5 and the third hole top concrete block 6 by a plurality of first prestressed threaded steel bars 10.

[0034] The construction steps are:

[0035] Step 1: After the construction reaches the opening of the side wall, the first hole bottom concrete block 1, the second hole bottom concrete block 2 and the third hole bottom concrete block 3 are positioned and assembled in sequence;

[0036] Step 2: Use the third prestressed threaded steel bar 12 to horizontally connect the first hole bottom concrete block 1, the second hole bottom concrete block 2 and the third hole bottom concrete block 3 near the hole opening to form a hidden beam at the hole opening;

[0037] Step 3: hoisting the components of the frame body 7;

[0038] Step 4: Set a temporary steel support 8 under the frame body 7 component;

[0039] Step 5: Hoist and position the first top concrete block 4, the second top concrete block 5, and the third top concrete block 6 of the hole;

[0040] Step 6: Vertically connect the first bottom concrete block 1 with the first top concrete block 4 and the third bottom concrete block 3 with the third top concrete block 6 respectively through the second prestressed threaded steel bars 11 to form concealed columns on both sides of the hole;

[0041] Step 7: Horizontally connect the first top concrete block 4, the second top concrete block 5, and the third top concrete block 6 through the fourth prestressed threaded steel bars 13 to form a concealed top beam of the hole;

[0042] Step 8: Weld the top beam 72 of the frame body 7 to the channel steels 9 embedded at the bottom of the first top concrete block 4, the second top concrete block 5, and the third top concrete block 6 of the component in a continuous length. After welding the top beam 72 of the frame body 7 to the channel steels 9 embedded on the sides of the first bottom concrete block 1, the first top concrete block 4, the third bottom concrete block 3, and the third top concrete block 6 in a continuous length, the connection between the columns 1 of the frame body 7 and the ring frame beam of the hole is realized;

[0043] Step 9: Remove the temporary steel support members 8;

[0044] Step 10: Connect the top beam 72 of the frame body 7 with the first top concrete block 4, the second top concrete block 5, and the third top concrete block 6 through the prestressed threaded steel bars 10 to strengthen the overall stiffness and strength of the ring frame beam of the hole.

[0045] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A construction method for a structure with a hole in the vertical wall of a prefabricated underground station, characterized in that: The assembled underground station vertical wall opening structure comprises: a cave top concrete block, a cave bottom concrete block and a frame body (7); the cave bottom concrete block is arranged on a concrete wall, and the frame body (7) is located between the cave top concrete block and the cave bottom concrete block; the cave bottom concrete block comprises a first cave bottom concrete block (1), a second cave bottom concrete block (2) and a third cave bottom concrete block (3); the second cave bottom concrete block (2) has a plurality of pieces and is sequentially arranged between the first cave bottom concrete block (1) and the third cave bottom concrete block (3); the cave top concrete block comprises a first cave top concrete block (4), a second cave top concrete block (5) and a third cave top concrete block (6); the second cave top concrete block (5) has a plurality of pieces and is sequentially arranged between the first cave top concrete block (4) Between the third cave top concrete block (6), the frame body (7) comprises a column (71) and a top beam (72), the column (71) and the top beam (72) are both rectangular steel pipe structures welded with steel plates, and the frame body (7) is formed by welding the tops of the columns (71) on both sides to the two ends of the top beam (72), the pipe body of the frame body (7) is filled with concrete, the bottom surface of each of the second cave top concrete blocks (5) is pre-embedded with a channel steel (9), and the first cave top concrete block (4), the third cave top concrete block (6), the first cave bottom concrete block (1) and the third cave bottom concrete block (3) are all pre-embedded with the channel steel (9) facing the frame body (7), and the outer side walls of the frame body (7) are all welded to the contacting channel steel (9); The first hole bottom concrete block (1), the second hole bottom concrete block (2) and the third hole bottom concrete block (3) are connected by a third prestressed threaded steel bar (12), and the third hole bottom concrete block (3) has two groups of the third prestressed threaded steel bars (12) and the two ends thereof are respectively fixed in the first hole bottom concrete block (1) and the third hole bottom concrete block (3); the first hole top concrete block (4), the second hole top concrete block (5) and the third hole top concrete block (6) are connected by a fourth prestressed threaded steel bar (13), the first hole bottom concrete block (1) and the first hole top concrete block (4) are connected by a second prestressed threaded steel bar (11), and the third hole bottom concrete block (3) and the third hole top concrete block (6) are connected by a second prestressed threaded steel bar (11); The top beam (72) of the frame body (7) is connected to the first cave top concrete block (4), the second cave top concrete block (5) and the third cave top concrete block (6) by using a plurality of first prestressed threaded steel bars (10); The construction method of the vertical wall opening structure of the assembled underground station comprises the following specific steps: Step 1: After the construction reaches the opening of the side wall, the first hole bottom concrete block (1), the second hole bottom concrete block (2) and the third hole bottom concrete block (3) are positioned and assembled in sequence; Step 2: Horizontally connect the first bottom concrete block (1), the second bottom concrete block (2), and the third bottom concrete block (3) near the opening through the third prestressed threaded steel bar (12) to form a concealed beam at the bottom of the opening; Step 3: Hoist the components of the frame body (7); Step 4: Install temporary steel support members (8) under the components of the frame body (7); Step 5: Hoist and position the first top concrete block (4), the second top concrete block (5), and the third top concrete block (6); Step 6: Vertically connect the first bottom concrete block (1) and the first top concrete block (4), and the third bottom concrete block (3) and the third top concrete block (6) respectively through the second prestressed threaded steel bar (11) to form concealed columns on both sides of the opening; Step 7: Horizontally connect the first top concrete block (4), the second top concrete block (5), and the third top concrete block (6) through the fourth prestressed threaded steel bar (13) to form a concealed beam at the top of the opening; Step 8: Weld the top beam (72) of the frame body (7) continuously with the channel steels (9) embedded at the bottom of the first top concrete block (4), the second top concrete block (5), and the third top concrete block (6). After continuously welding the top beam (72) of the frame body (7) with the channel steels (9) embedded on the sides of the first bottom concrete block (1), the first top concrete block (4), the third bottom concrete block (3), and the third top concrete block (6), connect the column (71) of the frame body (7) with the ring frame beam at the opening; Step 9: Remove the temporary steel support members (8); Step 10: Connect the top beam (72) of the frame body (7) with the first top concrete block (4), the second top concrete block (5), and the third top concrete block (6) through the first prestressed threaded steel bar (10) to enhance the overall stiffness and strength of the ring frame beam at the opening.

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