Narrow fat groove assembly type subway station middle force transmission structure and construction method

Abstract

The narrow fat groove assembly type subway station middle force transmission structure comprises a first force transmission piece or / and a second force transmission piece, the first force transmission piece is arranged on the side wall and close to the constructed side of the side wall, the second force transmission piece is arranged on the side wall and close to the non-constructed side of the side wall, and the first force transmission piece and the second force transmission piece are suitable for narrow fat grooves. Construction in the narrow fertilizer groove is facilitated, and the effect of transmitting soil pressure in the narrow fertilizer groove can be achieved. The invention further provides a construction method, the construction method is used for construction of the middle force transfer structure of the narrow fat groove assembly type subway station, and the middle force transfer structure of the narrow fat groove assembly type subway station and the construction method are suitable for the narrow fat groove and construction of the assembly type subway station without a boss on the outer side of a contour. The excavation volume of earth and rocks of the foundation pit and the volume of an enclosure structure are reduced, the occupied area of the tense ground surface of a city is reduced, the relocation and transformation workload of pipelines and the relocation workload of existing buildings are reduced, and the construction cost and the construction period are reduced.

Description

Technical Field

[0001] The invention belongs to the field of urban rail transit, and in particular relates to a narrow and wide trough assembled subway station intermediate force transmission structure and a construction method. Background Art

[0002] Prefabricated buildings, with their high production efficiency, precise components, and green environmental protection, represent the future trend of the modern construction industry. Under the "dual carbon" goal, through continuous integration with advanced manufacturing technology and new generation information technology, prefabricated buildings are becoming increasingly popular, ushering in new opportunities for rapid development. The use of prefabricated building technology is an important measure for improving the quality and efficiency of my country's subway construction, accelerating green and low-carbon transformation, and cultivating new quality productivity. Different from the construction mode of cast-in-place subway stations, prefabricated subway stations are constructed by splitting the beams, slabs, columns, walls and other components of the main structure, prefabricating them in a standardized and modular factory, and transporting them to the site. With the help of lifting equipment, each segmented component is hoisted into an open excavation pit for assembly, and each segmented component is fastened with connecting steel bars to form a whole.

[0003] The main structural concrete of the cast-in-place subway station is constructed close to the retaining structure. After the bottom plate, middle plate and top plate are constructed, hinge supports can be formed to resist the lateral earth pressure of the soil. Then the internal supports at the corresponding positions can be installed in sequence. The construction method of prefabricated and assembled subway stations is significantly different. In order to facilitate the lifting and placement of prefabricated structures, the width of the open excavation pit is often larger than the outer contour size of the main structure, and there is a fat groove (gap) between the two. This leads to the fact that after the internal support system is removed, the retaining structure of the foundation pit is very likely to become unstable under the huge earth pressure. Therefore, it is necessary to set an intermediate force transmission component between the soil structure and the prefabricated components so that the two can form a force system together to resist the earth pressure.

[0004] In the previous design of prefabricated subway stations, a 50cm wide boss was set at the connection between the station floor and the bottom of the side wall, and at the connection between the top plate and the top of the side wall. The boss is used to provide the construction of the connecting steel rod. The advantage of this design method is that it provides sufficient space for workers to operate, which is not only convenient for installing the connecting steel rod at the boss, but also convenient for the manual installation of the force transmission components between the prefabricated components and the surrounding structure. However, this method also has disadvantages, that is, the wide fat trough of the foundation pit greatly increases the earthwork excavation volume and the volume of the surrounding structure of the foundation pit, occupies the tight surface area of ​​the city, increases the workload of pipeline relocation and relocation of existing buildings, and increases the project cost and construction period. For this reason, in the new prefabricated subway station structure design, the outer boss of the outline is cancelled, and the width of the fat trough is also greatly compressed, resulting in the force transmission components and construction methods in the existing technology not being suitable for the construction of the new prefabricated subway station, and unable to effectively guarantee the normal operation of the intermediate force transmission components. Summary of the invention

[0005] The present invention is made to solve the above problems, and aims to provide an intermediate force transmission structure suitable for narrow fat troughs, which can be suitable for the construction of prefabricated subway stations without the outer boss of the outline, can reduce the amount of excavation of foundation pit earthwork and the volume of the retaining structure, can reduce the occupation of the tight surface area in the city, can reduce the workload of pipeline relocation and relocation of existing buildings, and can reduce the engineering cost and construction period. The intermediate force transmission structure and construction method of the prefabricated subway station with narrow fat troughs. In order to achieve the above purposes, the technical solutions adopted by the present invention are:

[0006] The present invention provides an intermediate force transmission structure of a narrow and wide trough assembled subway station, which has the following characteristics: it comprises a first force transmission member and / or a second force transmission member, the first force transmission member is arranged on the side wall, close to the side of the side wall that has been constructed, and the second force transmission member is arranged on the side wall, close to the side of the side wall that has not been constructed.

[0007] In the intermediate force transmission structure of the narrow and wide slot prefabricated subway station provided by the present invention, it can also have such a feature that the first force transmission member includes a first lead screw, a first nut seat and a first round rod, the first nut seat can be movably arranged at one end of the first lead screw, and the end of the first round rod is connected to the first nut seat.

[0008] The narrow and wide slot assembled subway station intermediate force transmission structure provided by the present invention may also have such a feature that a first connecting plate is provided on an end of the first lead screw away from the first nut seat.

[0009] In the narrow and wide slot assembled subway station intermediate force transmission structure provided by the present invention, it can also have such a feature that the first round rods are evenly arranged on the first nut seats.

[0010] In the intermediate force transmission structure of the narrow and wide slot prefabricated subway station provided by the present invention, it can also have such a feature that the second force transmission member includes a second lead screw, a second nut seat and a second round rod, the second nut seat can be movably arranged at one end of the second lead screw, and the end of the second round rod is connected to the second nut seat.

[0011] The narrow and wide slot assembled subway station intermediate force transmission structure provided by the present invention may also have such a feature that a second connecting plate is provided on the end of the second lead screw away from the second nut seat.

[0012] In the narrow and wide slot assembled subway station intermediate force transmission structure provided by the present invention, it can also have such a feature that the second round rods are evenly arranged on the second nut seats.

[0013] The narrow and wide slot assembled subway station intermediate force transmission structure provided by the present invention may also have such a feature, further comprising an additional sleeve connected to the first round rod or the second round rod.

[0014] In the narrow and wide trough assembled subway station intermediate force transmission structure provided by the present invention, it can also have the following characteristics: the diameter of the first round rod is 20 mm, and the length of the first round rod is 300 mm; the diameter of the second round rod is 20 mm, and the length of the second round rod is 100 mm.

[0015] The present invention also provides a construction method for a narrow and fat trough prefabricated subway station, which is realized by using the above-mentioned intermediate force transmission structure of the narrow and fat trough prefabricated subway station and has the following characteristics, including the following steps: step S1, construction preparation; step S2, pre-embedding of side wall steel plates; step S3, lead screw welding; step S4, side wall installation; step S5, middle plate installation; step S6, lead screw tightening.

[0016] The technical effect of the present invention is as follows: the intermediate force transmission structure of the narrow fertilizer trough assembled subway station provided by the present invention includes a first force transmission member and / or a second force transmission member, the first force transmission member is arranged on the side wall, close to the side of the side wall that has been constructed, and the second force transmission member is arranged on the side wall, close to the side of the side wall that has not been constructed, the first force transmission member and the second force transmission member are suitable for narrow fertilizer troughs, which is convenient for construction in the narrow fertilizer troughs and can play a role in transmitting soil pressure in the narrow fertilizer troughs. The present invention also provides a construction method for the construction of the intermediate force transmission structure of the narrow fertilizer trough assembled subway station.

[0017] Therefore, the intermediate force transmission structure and construction method of the narrow and fat trough prefabricated subway station provided by the present invention are suitable for narrow and fat troughs, and are suitable for the construction of prefabricated subway stations that eliminate the outer boss of the contour, reducing the amount of earth and stone excavation in the foundation pit and the volume of the retaining structure, reducing the occupation of the tight surface area in the city, reducing the workload of pipeline relocation and relocation of existing buildings, and reducing the project cost and construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification includes the following drawings, which show the following contents:

[0019] Figure 1 1 is a schematic structural diagram of an intermediate force transmission structure of a narrow and wide trough assembled subway station in an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a first force transmission member in an embodiment of the present invention in a front view direction;

[0021] Figure 3 is a schematic structural diagram of a first force transmission member in a side view direction in an embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram of a second force transmission member in an embodiment of the present invention in a front view direction;

[0023] Figure 5is a schematic structural diagram of a second force transmission member in a side view direction in an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the side wall embedded steel plate in an embodiment of the present invention;

[0025] Figure 7 is a schematic structural diagram of the installation of the first force transmission member and the second force transmission member in an embodiment of the present invention;

[0026] Figure 8 It is a schematic structural diagram of the side wall installation in an embodiment of the present invention.

[0027] Markings in the figure are: 1-side wall, 2-side wall steel plate, 10-first force transmission member, 11-first lead screw, 12-first nut seat, 13-first round rod, 14-first connecting plate, 20-second force transmission member, 21-second lead screw, 22-second nut seat, 23-second round rod, 24-second connecting plate, 30-additional sleeve. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0029] Figure 1 This is a schematic diagram of the structure of the intermediate force transmission structure of the narrow and fat trough assembled subway station in the embodiment of the present invention.

[0030] like Figure 1 As shown, the intermediate force transmission structure of the narrow fertilizer trough prefabricated subway station provided by the present invention includes a first force transmission member 10 and / or a second force transmission member 20. The first force transmission member 10 is arranged on the side wall 1, close to the side of the side wall 1 that has been constructed, and the second force transmission member 20 is arranged on the side wall 1, close to the side of the side wall 1 that has not been constructed. The first force transmission member 10 and the second force transmission member 20 are suitable for narrow fertilizer troughs, which is convenient for construction in the narrow fertilizer troughs, can play a role in transmitting soil pressure in the narrow fertilizer troughs, can transmit soil pressure between the soil structure and the prefabricated components, so that the soil structure and the prefabricated components jointly form a force system to jointly resist the soil pressure. The present invention also provides a construction method for the construction of an intermediate force transmission structure of a narrow and fat trough prefabricated subway station. The intermediate force transmission structure of the narrow and fat trough prefabricated subway station and the construction method provided by the present invention are suitable for narrow and fat troughs, and are suitable for the construction of prefabricated subway stations that eliminate the outer boss of the contour, thereby reducing the amount of earth and stone excavation in the foundation pit and the volume of the retaining structure, reducing the occupied tight surface area in the city, reducing the workload of pipeline relocation and relocation of existing buildings, and reducing the project cost and construction period.

[0031] Figure 2is a schematic structural diagram of a first force transmission member in an embodiment of the present invention in a front view direction; Figure 3 It is a schematic structural diagram of the first force transmission member in the side view direction in an embodiment of the present invention.

[0032] like Figure 2 and Figure 3 As shown, the first force transmission member 10 includes a first screw 11, a first nut seat 12 and a first round rod 13. The first nut seat 12 is movably arranged at one end of the first screw 11. The first nut seat 12 and the first screw 11 are rotatably connected through threaded cooperation. One end of the first round rod 13 is connected to the first nut seat 12. One ends of multiple first round rods 13 are connected to the first nut seat 12. Multiple first round rods 13 are evenly arranged on the first nut seat 12 in a divergent shape, which can increase the contact area between the first force transmission member 10 and the soil structure and improve the uniformity of force.

[0033] A first connecting plate 14 is provided on one end of the first screw 11 away from the first nut seat 12. The first connecting plate 14 is connected to the side wall 1 of the prefabricated component, which can enhance the base area with the side wall 1, ensure the installation firmness of the first screw 11, and at the same time, further improve the uniformity of force.

[0034] Figure 4 is a schematic structural diagram of a second force transmission member in an embodiment of the present invention in a front view direction; Figure 5 It is a schematic structural diagram of the second force transmission member in the side view direction in an embodiment of the present invention.

[0035] like Figure 4 and Figure 5 As shown, the second force transmission member 20 includes a second lead screw 21, a second nut seat 22 and a second round rod 23. The second nut seat 22 is movably arranged at one end of the second lead screw 21. The second nut seat 22 and the second lead screw 21 are rotatably connected through threaded cooperation. The end of the second round rod 23 is connected to the second nut seat 22. One ends of multiple second round rods 23 are connected to the second nut seat 22. The multiple second round rods 23 are evenly arranged on the second nut seat 22 in a divergent shape, which can increase the contact area between the second force transmission member 20 and the soil structure and improve the uniformity of force.

[0036] A second connecting plate 24 is provided on one end of the second screw 21 away from the second nut seat 22. The second connecting plate 24 is connected to the side wall 1 of the prefabricated component, which can enhance the base area with the side wall 1, ensure the installation firmness of the second screw 2, and at the same time, further improve the uniformity of force.

[0037] The intermediate force transmission structure of the narrow and wide trough assembled subway station provided by the present invention also includes an additional sleeve 30, one end of which can be connected to the first round rod 13 or the second round rod 23, and the other end of the additional sleeve 30 can be held by construction personnel. The operator holds one end of the additional sleeve 30 and clamps the other end of the additional sleeve 30 with the first round rod 13 or the second round rod 23, so that the operator can drive the first nut seat 12 or the second nut seat 22 to rotate, thereby adjusting the position of the first nut seat 12 or the second nut seat 22, ensuring that both sides of the first force transmission member 10 and the second force transmission member 20 can abut against the soil structure and the prefabricated components, and ensuring that the first force transmission member 10 and the second force transmission member 20 can work normally. During the process of tightening the first nut seat 12 or the second nut seat 22, the construction workers only need to stand on the construction platform without entering the fertilizer trough, so that the intermediate force transmission structure of the narrow fertilizer trough assembled subway station provided by the present invention is suitable for narrow fertilizer troughs, which is convenient for construction in narrow fertilizer troughs, can play a role in transmitting soil pressure in narrow fertilizer troughs, and can transmit soil pressure between the soil structure and the prefabricated components, so that the soil structure and the prefabricated components jointly form a force system to jointly resist the soil pressure.

[0038] In this embodiment, the diameter of the first round rod 13 is 20 mm, and the length of the first round rod 13 is 300 mm; the diameter of the second round rod 23 is 20 mm, and the length of the second round rod 23 is 100 mm. The length of the first round rod 13 is longer than the length of the second round rod 23, and the distance between the first nut seat 12 and the second nut seat 22 is greater than the sum of the lengths of the first round rod 13 and the second round rod 23, so that construction personnel will not interfere with each other during the process of tightening the first nut seat 12 and the second nut seat 22, and the length of the first round rod 13 is longer, which is convenient for operators to tighten the first nut seat 22 close to the constructed side of the side wall 1, thereby improving the reliability of the structure.

[0039] Figure 6 Schematic diagram of the structure of the side wall embedded steel plate in an embodiment of the present invention; Figure 7 is a schematic structural diagram of the installation of the first force transmission member and the second force transmission member in an embodiment of the present invention; Figure 8 It is a schematic structural diagram of the side wall installation in an embodiment of the present invention.

[0040] The present invention also provides a construction method for a narrow and fat trough assembled subway station, which is implemented by using the intermediate force transmission structure of the narrow and fat trough assembled subway station provided by the present invention, and includes the following steps:

[0041] Step S1, construction preparation.

[0042] Step S2, pre-embed the side wall steel plate, and pre-embed the side wall steel plate 2 on the soil-facing side of the side wall 1, such as Figure 6As shown, the side wall steel plate 2 is used to connect with the first connecting plate 14 and the second connecting plate 24 to provide an installation position for the first force transmitting member 10 and the second force transmitting member 20 .

[0043] Step S3, lead screw welding, welding the first connecting plate 14 and the second connecting plate 24 to the side wall steel plate 2, such as Figure 7 shown.

[0044] Step S4, side wall installation. After the first force transmission member 10 and the second force transmission member 20 are installed, the side wall 1 is hoisted by a gantry crane, and the installation and positioning construction of the side wall 1 is completed through the lower trolley and the adjustment system, and connected to the bottom plate. Figure 8 shown.

[0045] Step S5, middle plate installation. After the side wall 1 is installed, the middle plate prefabricated components are hoisted by a gantry crane, and the installation and positioning construction of the middle plate prefabricated components are completed through the lower trolley and the adjustment system.

[0046] In step S6, the screw is tightened. The construction personnel tighten the first nut seat 12 or the second nut seat 22 by holding the additional sleeve 30, so that the first force transmission member 10 and the second force transmission member 20 abut against the soil structure to transmit the soil pressure, so that the soil structure and prefabricated components such as the side wall 1 form a force system together to jointly resist the soil pressure.

[0047] Functions and Effects of the Embodiments

[0048] The intermediate force transmission structure of the narrow fertilizer trough prefabricated subway station provided by the present invention includes a first force transmission member 10 and / or a second force transmission member 20. The first force transmission member 10 is arranged on the side wall 1, close to the side of the side wall 1 that has been constructed, and the second force transmission member 20 is arranged on the side wall 1, close to the side of the side wall 1 that has not been constructed. The first force transmission member 10 and the second force transmission member 20 are suitable for narrow fertilizer troughs, which is convenient for construction in the narrow fertilizer troughs. They can play a role in transmitting soil pressure in the narrow fertilizer troughs, and can transmit soil pressure between the soil structure and the prefabricated components, so that the soil structure and the prefabricated components jointly form a force system to jointly resist the soil pressure. The present invention also provides a construction method for the construction of an intermediate force transmission structure of a narrow and fat trough prefabricated subway station. The intermediate force transmission structure of the narrow and fat trough prefabricated subway station and the construction method provided by the present invention are suitable for narrow and fat troughs, and are suitable for the construction of prefabricated subway stations that eliminate the outer boss of the contour, thereby reducing the amount of earth and stone excavation in the foundation pit and the volume of the retaining structure, reducing the occupied tight surface area in the city, reducing the workload of pipeline relocation and relocation of existing buildings, and reducing the project cost and construction period.

[0049] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A narrow and wide trough assembled subway station intermediate force transmission structure, It is characterized in that It comprises a first force transmission member (10) and / or a second force transmission member (20), wherein the first force transmission member (10) is arranged on the side wall (1) close to a side of the side wall (1) that has been constructed, and the second force transmission member (20) is arranged on the side wall (1) close to a side of the side wall (1) that has not been constructed.

2. According to claim 1, the intermediate force transmission structure of the narrow and wide slot assembled subway station, It is characterized in that The first force transmission member (10) comprises a first lead screw (11), a first nut seat (12) and a first round rod (13); the first nut seat (12) is movably arranged at one end of the first lead screw (11); and the end of the first round rod (13) is connected to the first nut seat (12).

3. According to claim 2, the intermediate force transmission structure of the narrow and wide slot assembled subway station, It is characterized in that A first connecting plate (14) is provided on one end of the first lead screw (11) away from the first nut seat (12).

4. According to claim 3, the intermediate force transmission structure of the narrow and wide slot assembled subway station, It is characterized in that The first round rods (13) are evenly arranged on the first nut seat (12).

5. According to claim 4, the intermediate force transmission structure of the narrow and wide slot assembled subway station, It is characterized in that The second force transmission member (20) comprises a second lead screw (21), a second nut seat (22) and a second round rod (23); the second nut seat (22) is movably arranged at one end of the second lead screw (21); and the end of the second round rod (23) is connected to the second nut seat (22).

6. The narrow and wide slot assembled subway station intermediate force transmission structure according to claim 5, It is characterized in that A second connecting plate (24) is provided on one end of the second lead screw (21) away from the second nut seat (22).

7. The intermediate force transmission structure of the narrow and wide slot assembled subway station according to claim 6, It is characterized in that The second round rods (23) are evenly arranged on the second nut seat (22).

8. The intermediate force transmission structure of the narrow and wide slot assembled subway station according to claim 7, It is characterized in that It also includes an additional sleeve (30), wherein the additional sleeve (30) is connected to the first round rod (13) or the second round rod (23).

9. The narrow and wide slot assembled subway station intermediate force transmission structure according to claim 8, It is characterized in that The diameter of the first round rod (13) is 20 mm, and the length of the first round rod (13) is 300 mm; the diameter of the second round rod (23) is 20 mm, and the length of the second round rod (23) is 100 mm.

10. A method for constructing a narrow and thick trough assembled subway station, which is realized by using the intermediate force transmission structure of the narrow and thick trough assembled subway station according to any one of claims 1 to 9. It is characterized in that The following steps are involved: Step S1, construction preparation; Step S2, pre-embedding of side wall steel plates; Step S3, lead screw welding; Step S4, side wall installation; Step S5, middle plate installation; Step S6, lead screw tightening.

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