Assembled immersed tube shaft and radial jacking underground parking lot and construction method thereof

Abstract

The present invention discloses an assembled immersed tube shaft and radial top-tube underground parking lot and a construction method thereof, wherein the parking lot comprises a shaft and a lifting mechanism, wherein the shaft wall is evenly provided with an even number of steel columns along its circumference, and a prefabricated shaft pipe section is layered between two adjacent steel columns, and the parking space comprises two prefabricated parking corridors; the method comprises the following steps: 1. determining an effective area between a first building and a second building; 2. constructing an immersed tube shaft; 3. reinforcing the first building and the second building; 4. constructing a parking space; and 5. constructing a parking entrance and exit on the ground. The present invention determines the position of the shaft in a narrow area between two adjacent buildings on the ground, avoids disturbance to the auxiliary pipelines of the building and the surrounding buildings by constructing an avoidance section of the shaft, and constructs an underground parking lot after expanding the shaft in the underground depth area of ​​the building, adopts assembled immersed tube shaft and top-tube parking space, has a simple construction process, no additional enclosure cost, and low cost.

Description

Technical Field

[0001] The invention belongs to the technical field of shaft underground parking lot construction, and in particular relates to an assembled immersed tube shaft and radial jacking pipe underground parking lot and a construction method thereof. Background Art

[0002] With the rapid development of social economy, people's living standards are gradually improving. It is common for every family to own a car and drive to work. Therefore, the number of cars has increased significantly, but the construction of parking spaces is restricted, especially in old residential areas. The buildings in these areas are generally built early, and parking spaces are not equipped according to the current prescribed ratio, which causes traffic congestion and unsafe roads, and is not convenient for foreign vehicles to enter. The parking contradictions in these areas are particularly prominent, which brings inconvenience to travel. In order to solve this problem, many areas adopt the method of adding underground parking spaces to provide more parking spaces for residents and users. However, the roads in such areas are generally narrow, with dense existing buildings and little available space. In addition, many areas have various pipelines and lines laid under the ground. The underground environment is complex. Direct excavation is more dangerous and may damage underground pipelines, causing certain economic losses. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an assembled immersed tube shaft and a radial top-tube underground parking lot in view of the deficiencies in the above-mentioned prior art. The design is novel and reasonable. The position of the shaft is determined in a narrow area between two adjacent buildings on the ground. By constructing an avoidance section of the shaft, disturbance to the auxiliary pipelines of the building and surrounding buildings is avoided. After the shaft is expanded in the deep area underground of the building, an underground parking lot is constructed. The assembled immersed tube shaft and the top-tube parking space are adopted. The construction process is simple, there is no additional enclosure cost, the cost is low, and it is easy to promote and use.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an assembled immersed tube shaft and a radial jacking underground parking lot, comprising a shaft built in an effective area between a first building and a second building and a lifting mechanism for construction and transportation in cooperation with the shaft, wherein the effective area is the ground between the first building and the second building and an area without underground pipelines in the corresponding stratum, the shaft comprises a shaft avoidance section and a shaft expansion section integrally connected to the shaft avoidance section, characterized in that: an even number of steel columns are evenly arranged on the shaft wall along its circumference, and two adjacent shafts are arranged on the shaft wall. Prefabricated shaft pipe sections are arranged in layers between the steel columns. The section of the prefabricated shaft pipe section located in the shaft avoidance section is the prefabricated shaft avoidance section pipe segment. The section of the prefabricated shaft pipe section located in the shaft expansion section is the prefabricated shaft expansion section pipe segment. The prefabricated shaft expansion section pipe segment includes a prefabricated shaft expansion section pipe segment edge, a prefabricated shaft expansion section reserved ring preset in the prefabricated shaft expansion section pipe segment edge, and a prefabricated shaft expansion section reserved plate preset in the prefabricated shaft expansion section reserved ring. The parking space extends into the stratum through the position of the prefabricated shaft expansion section reserved ring. The parking space includes two prefabricated parking corridors.

[0005] The above-mentioned assembled immersed tube shaft and radial jacking underground parking lot are characterized in that: a plurality of building reinforcement anchor rods are arranged on the side wall of the shaft avoidance section, which pass through the shaft avoidance section horizontally and extend into the stratum and are used to reinforce the first building and the second building; the depth of the building reinforcement anchor rods in the shaft avoidance section is greater than the depth of the foundation of the first building and the depth of the foundation of the second building; a plurality of slope protection piles for reinforcing the buildings are arranged on the side of the foundation of the first building close to the shaft and the side of the foundation of the second building close to the shaft.

[0006] The above-mentioned assembled immersed tube shaft and radial jacking underground parking lot are characterized in that the lifting mechanism includes a winch arranged on the ground and a lifting platform coordinated with the winch through a steel wire rope.

[0007] The above-mentioned assembled immersed tube shaft and radial jacking underground parking lot are characterized in that: the parking spaces are prefabricated hole-type parking spaces, each of the prefabricated hole-type parking spaces in non-underground first-floor parking spaces includes two flat-top prefabricated first parking corridors, and each of the prefabricated hole-type parking spaces in underground first-floor parking spaces includes two arched prefabricated second parking corridors, the prefabricated first parking corridors and the prefabricated second parking corridors are both pressed into the side walls of the shaft expansion section by a double-plunger rod hydraulic cylinder and extend horizontally into the stratum, and the center position of the double-plunger rod hydraulic cylinder is set at the center position of the lifting platform.

[0008] The above-mentioned assembled immersed tube shaft and radial jacking underground parking lot are characterized in that: the prefabricated reserved plate of the shaft expansion section located in the parking space other than the first underground floor is a flat-top first prefabricated reserved plate of the shaft expansion section, the prefabricated reserved plate of the shaft expansion section located in the parking space on the first underground floor is a vaulted second prefabricated reserved plate of the shaft expansion section, the prefabricated reserved ring of the shaft expansion section located in the parking space other than the first underground floor is the first prefabricated reserved ring of the shaft expansion section matched with the first prefabricated reserved plate of the shaft expansion section, and the prefabricated reserved ring of the shaft expansion section located in the parking space on the first underground floor is the second prefabricated reserved ring of the shaft expansion section matched with the second prefabricated reserved plate of the shaft expansion section.

[0009] The above-mentioned assembled immersed tube shaft and radial jacking underground parking lot are characterized in that: a first reserved steel plate for prefabricated tube segment cooperating with a steel column is arranged on the vertical end face of the prefabricated tube segment of the shaft avoidance section, a second reserved steel plate for prefabricated tube segment cooperating with a prefabricated tube segment of an adjacent shaft avoidance section is arranged on the upper and lower horizontal end faces of the prefabricated tube segment of the shaft avoidance section, a first reserved steel plate for prefabricated tube segment edge cooperating with a steel column is arranged on the vertical outer side end face of the edge of the prefabricated tube segment of the shaft expansion section, and a second reserved steel plate for prefabricated tube segment edge cooperating with a prefabricated tube segment edge of an adjacent shaft expansion section is arranged on the upper and lower horizontal end faces of the edge of the prefabricated tube segment of the shaft expansion section.

[0010] The above-mentioned assembled immersed tube shaft and radial jacking underground parking lot are characterized in that: the shaft is provided with an above-ground parking entrance and exit at a position above the ground, and a blade foot is provided at the lower part of the prefabricated pipe section of the bottom shaft.

[0011] The above-mentioned assembled immersed tube shaft and radial jacking underground parking lot is characterized in that the two prefabricated parking corridors in the parking space are connected by corridor connectors.

[0012] At the same time, the present invention also discloses a construction method of an assembled immersed tube shaft and a radial jacking underground parking lot with simple steps and reasonable design, which is characterized in that the construction method comprises the following steps:

[0013] Step 1: Determine the effective area between the first building and the second building: through the architectural drawings of the first building and the second building and the actual survey, actually survey and determine the effective area between the first building and the second building, and draw a line;

[0014] The projection of the effective area on the ground is a circle, and the diameter of the circle is not less than 5m;

[0015] Step 2: Build the immersed tube shaft. The process is as follows:

[0016] Step 201, according to the marking of the effective area, align the blade foot with the edge of the effective area and sink it into the stratum, and excavate the rock and soil between the blade feet;

[0017] The blade foot comprises a plurality of prefabricated blade foot segments, two adjacent prefabricated blade foot segments are connected by steel column sections, and the plurality of prefabricated blade foot segments and the plurality of steel column sections constitute a cylindrical blade foot with a hollow structure;

[0018] Step 202: a steel column section extending out of the ground is welded to the top of the steel column section in the blade foot sunk into the formation in step 201, a vertical shaft prefabricated pipe section is arranged between two adjacent steel column sections extending out of the ground, a plurality of vertical shaft prefabricated pipe sections and a corresponding plurality of steel column sections constitute a cylindrical vertical shaft prefabricated pipe section with a hollow structure, and the section is sunk into the formation, and the rock and soil between the blade feet are excavated;

[0019] Step 203, welding a steel column section extending out of the ground at the top of the steel column section in the prefabricated vertical shaft pipe section sunk into the stratum, arranging a prefabricated vertical shaft pipe section between two adjacent steel column sections extending out of the ground, and arranging a plurality of prefabricated vertical shaft pipe sections and corresponding plurality of steel column sections to form a new cylindrical prefabricated vertical shaft pipe section with a hollow structure, and sunk into the stratum, and excavating the rock and soil between the blade feet;

[0020] Step 204, repeating step 203 for multiple times until the shaft depth meets the requirement, and then building a immersed shaft;

[0021] The vertical shaft is divided into a vertical shaft avoidance section and a vertical shaft expansion section which is opened at the lower side of the vertical shaft avoidance section and is integrally connected with the vertical shaft avoidance section. The depth of the vertical shaft avoidance section is greater than the depth of the first building foundation and the depth of the second building foundation.

[0022] The prefabricated pipe segment of the shaft avoidance section in the prefabricated pipe section of the shaft is a whole prefabricated pipe segment, and the prefabricated pipe segment of the shaft expansion section in the prefabricated pipe section of the shaft is an assembled prefabricated pipe segment with a reserved disassembly seam. The vertical end surface of the prefabricated pipe segment of the shaft avoidance section is provided with a first reserved steel plate for the prefabricated pipe segment that matches the steel column, and the upper and lower horizontal end surfaces of the prefabricated pipe segment of the shaft avoidance section are provided with a second reserved steel plate for the prefabricated pipe segment that matches the adjacent prefabricated pipe segment of the shaft avoidance section. The vertical outer side end surface of the edge of the prefabricated pipe segment of the shaft expansion section is provided with a first reserved steel plate for the edge of the prefabricated pipe segment that matches the steel column, and the upper and lower horizontal end surfaces of the edge of the prefabricated pipe segment of the shaft expansion section are provided with a second reserved steel plate for the edge of the prefabricated pipe segment that matches the adjacent prefabricated pipe segment of the shaft expansion section.

[0023] Step 3, reinforcing the first building and the second building: a plurality of building reinforcement anchor rods are arranged on the side wall of the shaft avoidance section, and the anchor rods are horizontally extended into the stratum through the shaft avoidance section, and cement slurry is poured into the building reinforcement anchor rods to achieve the reinforcement of the bottom of the first building and the second building, and the depth of the building reinforcement anchor rods in the shaft avoidance section is greater than the depth of the foundation of the first building and the depth of the foundation of the second building; and a plurality of slope protection piles for reinforcing the buildings are arranged on the side of the foundation of the first building close to the shaft and the side of the foundation of the second building close to the shaft;

[0024] Step 4: Build a parking space. The process is as follows:

[0025] Step 401: Prefabricate hole-type parking spaces on the ground, wherein each of the prefabricated hole-type parking spaces in non-underground parking spaces includes two flat-top prefabricated first parking corridors, and each of the prefabricated hole-type parking spaces in underground parking spaces includes two vaulted prefabricated second parking corridors, and the parking spaces are constructed from bottom to top.

[0026] Step 402: determine the orientation of the two parking spaces to be built relatively to each other, remove the two prefabricated reserved plates and two prefabricated reserved rings of the shaft expansion section at the corresponding orientations on the bottom layer of the shaft expansion section, install a double-plunger rod hydraulic cylinder on the lifting mechanism, and the projection of the center axis of the double-plunger rod hydraulic cylinder on the ground coincides with the projection of the center axis of the two parking spaces to be built relatively to each other on the ground;

[0027] The lifting mechanism comprises a hoisting machine arranged on the ground and a lifting platform coordinated with the hoisting machine through a steel wire rope;

[0028] Step 403: symmetrically place two prefabricated parking galleries on the lifting platform and contact the two ends of the double-plunger rod hydraulic cylinder;

[0029] Step 404: The hoist lowers the lifting platform with two symmetrical prefabricated parking corridors into the shaft through the steel wire rope, so that the two prefabricated parking corridors face the original positions of the prefabricated reserved rings of the shaft expansion section, and the double-plunger rod hydraulic cylinder is started to press the two prefabricated parking corridors into the stratum through the original positions of the prefabricated reserved rings of the shaft expansion section, and the rock and soil in the prefabricated parking corridors are excavated;

[0030] Step 405: The angle of the double-plunger rod hydraulic cylinder remains unchanged, and the winch lifts the lifting platform to the ground through the steel wire rope, and then the two prefabricated parking pipe galleries are symmetrically placed on the lifting platform and contact the two ends of the double-plunger rod hydraulic cylinder. Then the winch lowers the lifting platform with the two prefabricated parking pipe galleries symmetrically installed into the vertical shaft through the steel wire rope, so that the two prefabricated parking pipe galleries are directly opposite to the original positions of the prefabricated reserved rings of the two vertical shaft expansion sections, and the double-plunger rod hydraulic cylinder is started to work, and the two newly entered prefabricated parking pipe galleries squeeze the two prefabricated parking pipe galleries that have entered the formation, until the two newly entered prefabricated parking pipe galleries pass through the original positions of the prefabricated reserved rings of the vertical shaft expansion section and are pressed into the formation, and the rock and soil in the prefabricated parking pipe galleries are excavated;

[0031] Step 406: Push the disassembled prefabricated reserved plate of the shaft expansion section to the end of the corresponding parking space away from the immersed tube shaft and weld it to the prefabricated parking corridor; buckle the disassembled prefabricated reserved ring of the shaft expansion section to its original position and weld it to the edge of the corresponding prefabricated pipe segment of the shaft expansion section, thus completing the construction of a pair of parking spaces in the bottom parking space;

[0032] Step 407, re-determine the orientation of the two parking spaces to be built relative to each other, adjust the angle of the double-plunger rod hydraulic cylinder on the lifting mechanism, and make the projection of the center axis of the double-plunger rod hydraulic cylinder on the ground coincide with the projection of the center axis of the two parking spaces to be built relative to each other, repeat steps 403 to 406, and complete the construction of another pair of parking spaces in the bottom parking space;

[0033] Step 408, repeat step 407 until the parking spaces in the bottom parking space are completed;

[0034] Step 409: Consider the parking space on the upper layer as the parking space on the lowest layer, and repeat steps 402 to 408 to complete the construction of the parking space;

[0035] Step 5: Constructing an above-ground parking entrance and exit: Constructing an above-ground parking entrance and exit at the location where the immersed tube shaft is located above the ground.

[0036] The above method is characterized in that: the prefabricated reserved plate of the shaft expansion section among the prefabricated reserved plates of the shaft expansion section located in the parking space on the first underground floor is a flat-top first prefabricated reserved plate of the shaft expansion section, the prefabricated reserved plate of the shaft expansion section among the prefabricated reserved plates of the shaft expansion section located in the parking space on the first underground floor is a vaulted second prefabricated reserved plate of the shaft expansion section, the prefabricated reserved ring of the shaft expansion section among the prefabricated reserved rings of the shaft expansion section located in the parking space on the first underground floor is the first prefabricated reserved ring of the shaft expansion section matched with the first prefabricated reserved plate of the shaft expansion section, and the prefabricated reserved ring of the shaft expansion section among the prefabricated reserved rings of the shaft expansion section located in the parking space on the first underground floor is the first prefabricated reserved ring of the shaft expansion section matched with the second prefabricated reserved plate of the shaft expansion section.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] 1. The parking lot adopted by the present invention sets a vertical shaft in an effective area between a first building and a second building, wherein the effective area is an area on the ground between the first building and the second building and a corresponding stratum without underground pipelines. The vertical shaft consists of a vertical shaft avoidance section and a vertical shaft expansion section. The vertical shaft avoidance section effectively avoids the area on the ground and the corresponding stratum where underground pipelines exist, does not disturb the buildings and the underground pipelines attached to the buildings, and reinforces the first building and the second building to avoid the impact on surrounding buildings caused by the construction of the underground parking lot and avoid unnecessary losses caused by the migration of underground pipelines. The construction occupies a small area, does not require large-scale construction machinery, has a short construction period, is flexible in layout, has strong applicability, and is easy to promote and use.

[0039] 2. The parking lot adopted by the present invention has a vertical shaft surrounded by steel columns and prefabricated vertical shaft pipe sections, and the vertical shaft is obtained by using assembled immersed tubes. While meeting the construction strength, the construction process is simplified. The parking spaces are pressed into the ground through two prefabricated parking corridors. The construction technology is mature, there is no additional enclosure cost, and the cost is low.

[0040] 3. The parking lot adopted by the present invention constructs parking spaces in the shaft expansion section located in the deep underground area of ​​the building, and the strata outside the parking spaces are not excavated, thereby reducing the excavation of construction earthwork, effectively utilizing the underground space, avoiding unnecessary construction, and occupying a small construction area.

[0041] 4. The construction method adopted by the present invention has simple steps. The effective area between the first building and the second building is determined through the architectural drawings of the first building and the second building and actual survey, so as to provide a reliable construction foundation for subsequent construction. The immersed tube shaft is guided to sink by the blade foot. The immersed tube shaft is built by sinking the prefabricated shaft pipe sections layer by layer. The prefabricated shaft pipe sections located in the shaft expansion section include the prefabricated pipe segment edge of the shaft expansion section, the prefabricated reserved ring of the shaft expansion section preset in the prefabricated pipe segment edge of the shaft expansion section, and the prefabricated reserved ring of the shaft expansion section preset in the prefabricated pipe segment edge of the shaft expansion section. The prefabricated reserved plate of the shaft expansion section within the prefabricated reserved ring and the prefabricated reserved ring of the shaft expansion section define the cross-sectional structure of the prefabricated parking gallery. The two prefabricated parking gallery in the parking space are pressed into the stratum. The prefabricated reserved plate of the shaft expansion section is pushed to the end of the corresponding parking space away from the immersed tube shaft and welded and fixed to the prefabricated parking gallery. Then the disassembled prefabricated reserved ring of the shaft expansion section is buckled in its original position and welded and fixed to the edge of the prefabricated pipe segment of the corresponding shaft expansion section. The construction process of the parking space does not cause waste of materials and is easy to promote and use.

[0042] To sum up, the design of the present invention is novel and reasonable. The position of the vertical shaft is determined in a narrow area between two adjacent buildings on the ground. By constructing an avoidance section of the vertical shaft, disturbance to the auxiliary pipelines of the building and surrounding buildings is avoided. After the vertical shaft is expanded in the deep area underground of the building, an underground parking lot is constructed. The construction occupies a small area, is reliable and stable, and is easy to promote and use.

[0043] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of the parking lot of the present invention.

[0045] Figure 2 It is a structural schematic diagram of a parking lot in the shaft expansion section of the present invention.

[0046] Figure 3 It is a schematic structural diagram of the prefabricated pipe segment of the shaft avoidance section of the present invention.

[0047] Figure 4 It is a schematic structural diagram of the prefabricated pipe segments of the shaft expansion section in the underground first-floor parking space of the present invention.

[0048] Figure 5 It is a schematic structural diagram of the prefabricated pipe segments of the shaft expansion section in the non-underground first-floor parking space of the present invention.

[0049] Figure 6 It is a schematic diagram of the coordination relationship between the prefabricated first parking gallery and the prefabricated second parking gallery located at the same position according to the present invention.

[0050] Figure 7 It is a schematic diagram of the construction state of the blade foot of the present invention.

[0051] Figure 8 It is a schematic diagram of the construction status of the prefabricated pipe section of the vertical shaft of the present invention.

[0052] Fig. 9 It is a structural schematic diagram of the vertical shaft expansion section of the present invention.

[0053] Fig.10 It is a structural schematic diagram of the shaft avoidance section of the present invention.

[0054] Fig.11 It is a flowchart of the construction method of the present invention.

[0055] Description of reference numerals:

[0056] 1—ground; 2—stratum; 3—first building;

[0057] 4—Second building; 5—Ground parking entrance and exit;

[0058] 6—prefabricated reserved plate of shaft expansion section; 6-1—second prefabricated reserved plate of shaft expansion section;

[0059] 6-2—the first prefabricated reserved plate of the shaft expansion section; 7—the prefabricated reserved ring of the shaft expansion section;

[0060] 7-1—Second prefabricated reserved ring of the shaft expansion section; 7-2—First prefabricated reserved ring of the shaft expansion section;

[0061] 8—first underground pipeline; 9—second underground pipeline;

[0062] 10—prefabricated segment of shaft avoidance section; 11-1—shaft avoidance section;

[0063] 11-2—Shaft expansion section; 12—Building reinforcement anchor rod;

[0064] 13—blade foot; 14—parking space; 15—prefabricated parking gallery;

[0065] 15-1—Prefabricated second parking gallery; 15-2—Prefabricated first parking gallery;

[0066] 16—connecting parts of pipe gallery; 17—prefabricated pipe sections of vertical shaft; 18—steel columns;

[0067] 19—prefabricated segment edge of shaft expansion section; 20—first reserved steel plate of prefabricated segment;

[0068] 21—Second reserved steel plate for prefabricated segment; 22—First reserved steel plate for edge of prefabricated segment;

[0069] 23—The second reserved steel plate at the edge of the prefabricated segment. DETAILED DESCRIPTION

[0070] like Figures 1 to 5As shown, the assembled immersed tube shaft and radial jacking underground parking lot described in the present invention include a shaft built in an effective area between a first building 3 and a second building 4 and a lifting mechanism used in conjunction with the shaft for construction and transportation. The effective area is an area without underground pipelines on the ground 1 and the corresponding stratum 2 between the first building 3 and the second building 4. The shaft 11 includes a shaft avoidance section 11-1 and a shaft expansion section 11-2 integrally connected to the shaft avoidance section 11-1. The shaft wall of the shaft is evenly provided with an even number of steel columns 18 along its circumference, and the distance between two adjacent steel columns 18 is 40 meters. Prefabricated shaft pipe sections 17 are arranged in layers. The pipe section of the prefabricated shaft pipe section 17 located in the shaft avoidance section 11-1 is the prefabricated shaft avoidance section segment 10, and the pipe section of the prefabricated shaft pipe section 17 located in the shaft expansion section 11-2 is the prefabricated shaft expansion section segment. The prefabricated shaft expansion section segment includes a prefabricated shaft expansion section segment edge 19, a prefabricated shaft expansion section segment ring 7 preset in the prefabricated shaft expansion section segment edge 19, and a prefabricated shaft expansion section segment plate 6 preset in the prefabricated shaft expansion section segment ring 7. The parking space 14 extends into the stratum 2 through the position of the prefabricated shaft expansion section segment ring 7. The parking space 14 includes two prefabricated parking corridors 15.

[0071] It should be noted that, by setting a vertical shaft 11 in the effective area between the first building 3 and the second building 4, wherein the effective area is the area without underground pipelines in the ground 1 and the corresponding stratum 2 between the first building 3 and the second building 4, the vertical shaft is composed of a vertical shaft avoidance section 11-1 and a vertical shaft expansion section 11-2, the vertical shaft avoidance section 11-1 effectively avoids the area with underground pipelines in the ground 1 and the corresponding stratum 2, does not disturb the buildings and the underground pipelines attached to the buildings, and reinforces the first building 3 and the second building 4 to avoid the impact on the surrounding buildings caused by the construction of the underground parking lot and avoid unnecessary losses caused by the migration of the underground pipelines; a parking space 14 is constructed for the vertical shaft expansion section 11-2 located in the underground depth area of ​​the building, and the stratum 2 outside the parking space 14 is not excavated, thereby reducing the excavation of construction earthwork, effectively utilizing the underground space, avoiding unnecessary construction, and occupying a small construction area; in an actual environment, the underground pipelines include a first underground pipeline 8 attached to the first building 3 and a second underground pipeline 9 attached to the second building 4.

[0072] During actual construction, the vertical shaft is surrounded by steel columns and prefabricated vertical shaft pipe sections, and the vertical shaft is obtained by using assembled immersed tubes. While meeting the construction strength, the construction process is simplified. The parking spaces are pressed into the ground through two prefabricated parking corridors. The construction technology is mature, there is no additional enclosure cost, and the cost is low.

[0073] In this embodiment, a plurality of building reinforcement anchor rods 12 are arranged on the side wall of the shaft avoidance section 11-1, which pass through the shaft avoidance section 11-1 horizontally and extend into the stratum 2 and are used to reinforce the first building 3 and the second building 4. The depth of the building reinforcement anchor rods 12 in the shaft avoidance section 11-1 is greater than the depth of the first building foundation and the depth of the second building foundation. A plurality of slope protection piles for reinforcing the buildings are arranged on the side of the first building foundation close to the shaft and the side of the second building foundation close to the shaft.

[0074] In this embodiment, the lifting mechanism includes a hoisting machine arranged on the ground 1 and a lifting platform coordinated with the hoisting machine through a steel wire rope.

[0075] In this embodiment, the parking space 14 is a prefabricated hole-type parking space. Each of the prefabricated hole-type parking spaces in the non-underground first-floor parking spaces includes two flat-top prefabricated first parking corridors 15-2, and each of the prefabricated hole-type parking spaces in the underground first-floor parking spaces includes two arched prefabricated second parking corridors 15-1. The prefabricated first parking corridor 15-2 and the prefabricated second parking corridor 15-1 are both pressed into the side wall of the vertical shaft expansion section 11-2 by a double-plunger rod hydraulic cylinder and extend horizontally into the stratum 2. The center position of the double-plunger rod hydraulic cylinder is set at the center position of the lifting platform.

[0076] In the present embodiment, the prefabricated reserved plate 6 for the shaft expansion section among the prefabricated reserved plates 6 for the shaft expansion section that is located in a parking space other than the first underground floor is a flat-top first prefabricated reserved plate 6-2 for the shaft expansion section, the prefabricated reserved plate 6 for the shaft expansion section that is located in a parking space on the first underground floor is a vaulted second prefabricated reserved plate 6-1 for the shaft expansion section, the prefabricated reserved ring 7 for the shaft expansion section that is located in a parking space other than the first underground floor is a first prefabricated reserved ring 7-2 for the shaft expansion section that cooperates with the first prefabricated reserved plate 6-2 for the shaft expansion section, and the prefabricated reserved ring 7 for the shaft expansion section that is located in a parking space on the first underground floor is a second prefabricated reserved ring 7-1 for the shaft expansion section that cooperates with the second prefabricated reserved plate 6-1 for the shaft expansion section.

[0077] In this embodiment, a first reserved steel plate 20 for prefabricated pipe segments cooperating with the steel column 18 is arranged on the vertical end face of the prefabricated pipe segments 10 of the shaft avoidance section, a second reserved steel plate 21 for prefabricated pipe segments cooperating with the adjacent prefabricated pipe segments 10 of the shaft avoidance section is arranged on the upper and lower horizontal end faces of the prefabricated pipe segments 10 of the shaft avoidance section, a first reserved steel plate 22 for prefabricated pipe segments cooperating with the steel column 18 is arranged on the vertical outer side end face of the prefabricated pipe segment edge 19 of the shaft expansion section, and a second reserved steel plate 23 for prefabricated pipe segment edge cooperating with the adjacent prefabricated pipe segment edge 19 of the shaft expansion section is arranged on the upper and lower horizontal end faces of the prefabricated pipe segment edge 19 of the shaft expansion section.

[0078] In this embodiment, the vertical shaft is provided with an above-ground parking entrance and exit 5 at a position above the ground 1, and a blade foot 13 is provided at the lower part of the bottommost vertical shaft prefabricated pipe section 17. The immersed tube vertical shaft is guided to sink by the blade foot 13, and a immersed tube vertical shaft is constructed by sinking the vertical shaft prefabricated pipe sections layer by layer.

[0079] In this embodiment, the two prefabricated parking corridors 15 in the parking space 14 are connected by a corridor connector 16 .

[0080] It should be noted that the pipe gallery connector 16 includes a reserved steel plate preset on the prefabricated parking pipe gallery 15, and the two prefabricated parking pipe galleries 15 in the parking space 14 are welded and fixed into one by the reserved steel plate.

[0081] like Figures 6 to 11 The construction method of a prefabricated immersed tube shaft and a radial jacking tube underground parking lot shown comprises the following steps:

[0082] Step 1: Determine the effective area between the first building 3 and the second building: through the architectural drawings of the first building 3 and the second building 4 and actual survey, actually survey and determine the effective area between the first building 3 and the second building 4, and draw a line;

[0083] The projection of the effective area on the ground 1 is a circle, and the diameter of the circle is not less than 5m;

[0084] Step 2: Build the immersed tube shaft. The process is as follows:

[0085] Step 201, according to the marking of the effective area, align the blade foot 13 with the edge of the effective area and sink it into the stratum 2, and excavate the rock and soil between the blade feet 13;

[0086] The blade foot 13 comprises a plurality of prefabricated blade foot segments, two adjacent prefabricated blade foot segments are connected by steel column sections, and the plurality of prefabricated blade foot segments and the plurality of steel column sections constitute a cylindrical blade foot 13 with a hollow structure;

[0087] Step 202: a steel column section extending out of the ground 1 is welded on the top of the steel column section in the blade foot 13 sunk into the stratum 2 in step 201, and a vertical shaft prefabricated pipe section 17 is arranged between two adjacent steel column sections extending out of the ground 1. A plurality of vertical shaft prefabricated pipe sections 17 and a corresponding plurality of steel column sections constitute a cylindrical vertical shaft prefabricated pipe section with a hollow structure, which is sunk into the stratum 2, and the rock and soil between the blade feet 13 are excavated;

[0088] Step 203: weld a steel column section extending out of the ground 1 at the top of the steel column section in the prefabricated shaft pipe section sunk into the stratum 2, set a prefabricated shaft pipe section 17 between two adjacent steel column sections extending out of the ground 1, and multiple prefabricated shaft pipe sections 17 and corresponding multiple steel column sections constitute a new cylindrical prefabricated shaft pipe section with a hollow structure, and sink it into the stratum 2, and excavate the rock and soil between the blade feet 13;

[0089] Step 204, repeating step 203 for multiple times until the shaft depth meets the requirement, and then building a immersed shaft;

[0090] The shaft is divided into a shaft avoidance section 11-1 and a shaft expansion section 11-2 opened at the lower side of the shaft avoidance section 11-1 and connected to the shaft avoidance section 11-1. The depth of the shaft avoidance section 11-1 is greater than the depth of the first building foundation and the depth of the second building foundation.

[0091] The prefabricated pipe segment 10 of the shaft avoidance section in the prefabricated pipe section 17 of the shaft is a whole prefabricated pipe segment, and the prefabricated pipe segment of the shaft expansion section in the prefabricated pipe section 17 of the shaft is an assembled prefabricated pipe segment with a reserved disassembly seam. The vertical end surface of the prefabricated pipe segment 10 of the shaft avoidance section is provided with a first reserved steel plate 20 of the prefabricated pipe segment that matches the steel column 18, and the upper and lower horizontal end surfaces of the prefabricated pipe segment 10 of the shaft avoidance section are provided with a second reserved steel plate 21 of the prefabricated pipe segment that matches the adjacent prefabricated pipe segment 10 of the shaft avoidance section. The vertical outer side end surface of the prefabricated pipe segment edge 19 of the shaft expansion section is provided with a first reserved steel plate 22 of the prefabricated pipe segment edge that matches the steel column 18, and the upper and lower horizontal end surfaces of the prefabricated pipe segment edge 19 of the shaft expansion section are provided with a second reserved steel plate 23 of the prefabricated pipe segment edge that matches the adjacent prefabricated pipe segment edge 19 of the shaft expansion section.

[0092] Step 3, reinforcing the first building and the second building: a plurality of building reinforcement anchor rods 12 are arranged on the side wall of the shaft avoidance section 11-1, and the anchor rods 12 are horizontally extended into the stratum 2 through the shaft avoidance section 11-1, and cement slurry is poured into the building reinforcement anchor rods 12 to reinforce the bottom of the first building 3 and the second building 4. The depth of the building reinforcement anchor rods 12 in the shaft avoidance section 11-1 is greater than the depth of the foundation of the first building and the depth of the foundation of the second building; and a plurality of slope protection piles for reinforcing the buildings are arranged on one side of the foundation of the first building close to the shaft and on one side of the foundation of the second building close to the shaft;

[0093] Step 4: Build a parking space. The process is as follows:

[0094] Step 401: Prefabricate a hole-type parking space on the ground 1. Each of the prefabricated hole-type parking spaces in the non-underground parking spaces includes two flat-top prefabricated first parking corridors 15-2, and each of the prefabricated hole-type parking spaces in the underground parking spaces includes two vaulted prefabricated second parking corridors 15-1. The parking spaces 14 are constructed from bottom to top.

[0095] Step 402, determine the orientation of the two parking spaces 14 built relatively to each other, remove the two prefabricated reserved plates 6 and two prefabricated reserved rings 7 of the shaft expansion section at the corresponding orientation on the bottom layer of the shaft expansion section 11-2, install a double-plunger rod hydraulic cylinder on the lifting mechanism, and the projection of the central axis of the double-plunger rod hydraulic cylinder on the ground 1 coincides with the projection of the central axis of the two parking spaces 14 built relatively to each other on the ground 1;

[0096] The lifting mechanism includes a hoisting machine arranged on the ground 1 and a lifting platform coordinated with the hoisting machine through a steel wire rope;

[0097] Step 403: symmetrically place two prefabricated parking galleries on the lifting platform and contact the two ends of the double-plunger rod hydraulic cylinder;

[0098] Step 404: The hoist lowers the lifting platform with two symmetrical prefabricated parking corridors into the shaft through the steel wire rope, so that the two prefabricated parking corridors face the original positions of the prefabricated reserved rings 7 of the shaft expansion section, and the double-plunger rod hydraulic cylinder is started to work, and the two prefabricated parking corridors are pressed into the stratum 2 through the original positions of the prefabricated reserved rings 7 of the shaft expansion section, and the rock and soil in the prefabricated parking corridors are excavated;

[0099] Step 405: The angle of the double-plunger rod hydraulic cylinder remains unchanged, and the winch lifts the lifting platform to the ground through the steel wire rope, and then the two prefabricated parking pipe galleries are symmetrically placed on the lifting platform and contact the two ends of the double-plunger rod hydraulic cylinder. Then the winch lowers the lifting platform with the two prefabricated parking pipe galleries symmetrically installed into the vertical shaft through the steel wire rope, so that the two prefabricated parking pipe galleries are directly opposite to the original positions of the prefabricated reserved rings 7 of the two vertical shaft expansion sections, and the double-plunger rod hydraulic cylinder is started to work, and the two newly entered prefabricated parking pipe galleries squeeze the two prefabricated parking pipe galleries that have entered the formation 2, until the two newly entered prefabricated parking pipe galleries pass through the original positions of the prefabricated reserved rings 7 of the vertical shaft expansion section and are pressed into the formation 2, and the rock and soil in the prefabricated parking pipe galleries are excavated;

[0100] Step 406: Push the disassembled prefabricated reserved plate 6 of the shaft expansion section to the end of the corresponding parking space 14 away from the immersed tube shaft and weld it to the prefabricated parking corridor 15; buckle the disassembled prefabricated reserved ring 7 of the shaft expansion section to its original position and weld it to the corresponding prefabricated pipe segment edge 19 of the shaft expansion section, thus completing the construction of a pair of parking spaces 18 in the bottom parking space;

[0101] Step 407, re-determine the orientation of the two parking spaces 18 to be built relatively to each other, adjust the angle of the double-plunger rod hydraulic cylinder on the lifting mechanism, and make the projection of the central axis of the double-plunger rod hydraulic cylinder on the ground 1 coincide with the projection of the central axis of the two parking spaces 14 to be built relatively to each other on the ground 1, repeat steps 403 to 406, and complete the construction of another pair of parking spaces 14 in the bottom parking space;

[0102] Step 408, repeat step 407 until the parking space 14 in the bottom parking space is completed;

[0103] Step 409: Consider the parking space on the upper layer as the parking space on the lowest layer, and repeat steps 402 to 408 to complete the construction of the parking space;

[0104] Step 5: Constructing an above-ground parking entrance and exit: constructing an above-ground parking entrance and exit 5 at the position where the immersed tube shaft is located above the ground 1 .

[0105] It should be noted that the steps of the present invention are simple. The effective area between the first building and the second building is determined through the architectural drawings of the first building and the second building and actual surveys, so as to provide a reliable construction foundation for subsequent construction. The immersed tube shaft is guided to sink by the blade feet, and the immersed tube shaft is built by sinking the prefabricated shaft pipe sections layer by layer. The prefabricated shaft pipe section 17 located in the shaft expansion section 11-2 includes a prefabricated shaft expansion section pipe segment edge 19, a prefabricated shaft expansion section reserved ring 7 preset in the prefabricated shaft expansion section pipe segment edge 19, and a prefabricated shaft expansion section reserved plate 6 preset in the prefabricated shaft expansion section reserved ring 7. The prefabricated shaft expansion section reserved ring 7 defines a prefabricated parking corridor. 15, the two prefabricated parking corridors 15 in the parking space 14 are pressed into the stratum 2, the prefabricated reserved plate 6 of the shaft expansion section is pushed to the end of the corresponding parking space 14 away from the immersed tube shaft and is welded and fixed with the prefabricated parking corridor 15, then the disassembled prefabricated reserved ring 7 of the shaft expansion section is buckled at its original position and welded and fixed with the corresponding prefabricated pipe segment edge 19 of the shaft expansion section, and the construction process of the parking space 18 does not cause waste of materials; this implementation adopts the prefabricated hole type parking space prefabricated in advance, and the prefabricated hole type parking space is pressed into the stratum 2 by on-site pushing and pressing, which saves construction time and also allows construction personnel to excavate soil in the prefabricated hole type parking space, which is highly safe, reliable and stable.

[0106] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. Construction methods of assembled immersed tube shaft and radial jacking underground parking lot, Features: The assembled immersed tube shaft and radial jacking underground parking lot comprise a shaft constructed in an effective area between a first building (3) and a second building (4) and a lifting mechanism used in conjunction with the shaft for construction and transportation, wherein the effective area is an area without underground pipelines on the ground (1) between the first building (3) and the second building (4) and in a corresponding stratum (2), the shaft (11) comprising a shaft avoidance section (11-1) and a shaft expansion section (11-2) integrally connected to the shaft avoidance section (11-1), characterized in that an even number of steel columns (18) are evenly arranged on the shaft wall along its circumference, and a shaft prefabricated pipe section (17) is layered between two adjacent steel columns (18). ), the pipe section of the vertical shaft prefabricated pipe section (17) located in the vertical shaft avoidance section (11-1) is the vertical shaft avoidance section prefabricated pipe segment (10), the pipe section of the vertical shaft prefabricated pipe section (17) located in the vertical shaft expansion section (11-2) is the vertical shaft expansion section prefabricated pipe segment, the vertical shaft expansion section prefabricated pipe segment includes a vertical shaft expansion section prefabricated pipe segment edge (19), a vertical shaft expansion section prefabricated reserved ring (7) preset in the vertical shaft expansion section prefabricated pipe segment edge (19), and a vertical shaft expansion section prefabricated reserved plate (6) preset in the vertical shaft expansion section prefabricated reserved ring (7), the parking space (14) passes through the location of the vertical shaft expansion section prefabricated reserved ring (7) and extends into the stratum (2), and the parking space (14) includes two prefabricated parking pipe galleries (15); The method comprises the following steps: Step 1: Determine the effective area between the first building and the second building: Based on the architectural drawings of the first building (3) and the second building (4) and actual survey, conduct actual survey and determine the effective area between the first building (3) and the second building (4), and draw a line; The projection of the effective area on the ground (1) is a circle, and the diameter of the circle is not less than 5m; Step 2: Build the immersed tube shaft. The process is as follows: Step 201, according to the marking of the effective area, align the blade foot (13) with the edge of the effective area and sink it into the stratum (2), and excavate the rock and soil between the blade feet (13); The blade foot (13) comprises a plurality of prefabricated blade foot segments, two adjacent prefabricated blade foot segments are connected by a steel column segment, and the plurality of prefabricated blade foot segments and the plurality of steel column segments form a cylindrical blade foot (13) with a hollow structure; Step 202, welding a steel column section extending out of the ground (1) to the top of the steel column section in the blade foot (13) sunk into the stratum (2) in step 201, arranging a vertical shaft prefabricated pipe section (17) between two adjacent steel column sections extending out of the ground (1), a plurality of vertical shaft prefabricated pipe sections (17) and a corresponding plurality of steel column sections forming a cylindrical vertical shaft prefabricated pipe section with a hollow structure, and sunk into the stratum (2), excavating the rock and soil between the blade feet (13); Step 203, a steel column section extending out of the ground (1) is welded at the top of the steel column section in the prefabricated shaft pipe section sunk into the stratum (2), and a prefabricated shaft pipe section (17) is arranged between two adjacent steel column sections extending out of the ground (1). A plurality of prefabricated shaft pipe sections (17) and a corresponding plurality of steel column sections constitute a new cylindrical prefabricated shaft pipe section with a hollow structure, which is sunk into the stratum (2), and the rock and soil between the blade feet (13) are excavated; Step 204, repeating step 203 for multiple times until the shaft depth meets the requirement, and then building a immersed shaft; The vertical shaft is divided into a vertical shaft avoidance section (11-1) and a vertical shaft expansion section (11-2) which is opened at the lower side of the vertical shaft avoidance section (11-1) and is integrally connected with the vertical shaft avoidance section (11-1); the depth of the vertical shaft avoidance section (11-1) is greater than the depth of the first building foundation and the depth of the second building foundation; The prefabricated pipe segment (10) of the shaft avoidance section in the prefabricated pipe segment (17) is a whole prefabricated pipe segment, and the prefabricated pipe segment of the shaft expansion section in the prefabricated pipe segment (17) is an assembled prefabricated pipe segment with a reserved disassembly seam. The vertical end surface of the prefabricated pipe segment (10) of the shaft avoidance section is provided with a first reserved steel plate (20) of the prefabricated pipe segment that matches with the steel column (18), and the upper and lower horizontal end surfaces of the prefabricated pipe segment (10) of the shaft avoidance section are provided with a steel plate (20) that matches with the adjacent vertical column (18). A second reserved steel plate (21) for a prefabricated pipe segment that matches the prefabricated pipe segment (10) of the shaft avoidance section, a first reserved steel plate (22) for a prefabricated pipe segment that matches the steel column (18) is arranged on the vertical outer side end surface of the prefabricated pipe segment edge (19) of the shaft expansion section, and a second reserved steel plate (23) for a prefabricated pipe segment edge that matches the prefabricated pipe segment edge (19) of the adjacent shaft expansion section is arranged on the upper and lower horizontal end surfaces of the prefabricated pipe segment edge (19) of the shaft expansion section; Step 3, reinforcing the first building and the second building: a plurality of building reinforcement anchor rods (12) are arranged on the side wall of the shaft avoidance section (11-1), and the anchor rods pass through the shaft avoidance section (11-1) and extend horizontally into the stratum (2); cement slurry is poured into the building reinforcement anchor rods (12) to achieve reinforcement of the bottom of the first building (3) and the second building (4); the depth of the building reinforcement anchor rods (12) in the shaft avoidance section (11-1) is greater than the depth of the foundation of the first building and the depth of the foundation of the second building; and a plurality of slope protection piles for reinforcing the buildings are arranged on one side of the foundation of the first building close to the shaft and on one side of the foundation of the second building close to the shaft; Step 4: Build a parking space. The process is as follows: Step 401: Prefabricate a hole-type parking space on the ground (1), wherein each of the prefabricated hole-type parking spaces other than the underground parking spaces comprises two flat-top prefabricated first parking corridors (15-2), and each of the prefabricated hole-type parking spaces on the underground parking spaces comprises two arched prefabricated second parking corridors (15-1), and the parking spaces (14) are constructed from bottom to top; Step 402, determine the orientation of the two parking spaces (14) built relatively to each other, remove the two prefabricated reserved plates (6) and two prefabricated reserved rings (7) of the shaft expansion section at the corresponding orientation on the bottom layer of the shaft expansion section (11-2), install a double-plunger rod hydraulic cylinder on the lifting mechanism, and the projection of the central axis of the double-plunger rod hydraulic cylinder on the ground (1) coincides with the projection of the central axis of the two parking spaces (14) built relatively to each other on the ground (1); The lifting mechanism comprises a hoisting machine arranged on the ground (1) and a lifting platform cooperating with the hoisting machine via a steel wire rope; Step 403: symmetrically place two prefabricated parking galleries on the lifting platform and contact the two ends of the double-plunger rod hydraulic cylinder; Step 404: The hoist lowers the lifting platform with two symmetrically mounted prefabricated parking corridors into the vertical shaft via a steel wire rope, so that the two prefabricated parking corridors face the original positions of the prefabricated reserved rings (7) of the two vertical shaft expansion sections, and starts the operation of the double-plunger rod hydraulic cylinder to press the two prefabricated parking corridors through the original positions of the prefabricated reserved rings (7) of the vertical shaft expansion section into the stratum (2), and excavate the rock and soil in the prefabricated parking corridors; Step 405, the angle of the double-plunger rod hydraulic cylinder remains unchanged, and the winch lifts the lifting platform to the ground through the steel wire rope, and then the two prefabricated parking corridors are symmetrically placed on the lifting platform and contact the two ends of the double-plunger rod hydraulic cylinder. Then the winch lowers the lifting platform with the two prefabricated parking corridors symmetrically installed into the vertical shaft through the steel wire rope, so that the two prefabricated parking corridors are directly opposite to the original positions of the prefabricated reserved rings (7) of the two vertical shaft expansion sections, and the double-plunger rod hydraulic cylinder is started to work, and the two newly entered prefabricated parking corridors squeeze the two prefabricated parking corridors that have entered the stratum (2), until the two newly entered prefabricated parking corridors pass through the original positions of the prefabricated reserved rings (7) of the vertical shaft expansion section and are pressed into the stratum (2), and the rock and soil in the prefabricated parking corridors are excavated; Step 406: Push the disassembled prefabricated reserved plate (6) of the shaft expansion section to the end of the corresponding parking space (14) away from the immersed tube shaft and weld it to the prefabricated parking corridor (15); buckle the disassembled prefabricated reserved ring (7) of the shaft expansion section to its original position and weld it to the corresponding prefabricated pipe segment edge (19) of the shaft expansion section, thereby completing the construction of a pair of parking spaces (14) in the bottom parking space; Step 407, re-determine the orientation of the two parking spaces (14) to be built relative to each other, adjust the angle of the double-plunger rod hydraulic cylinder on the lifting mechanism, and make the projection of the central axis of the double-plunger rod hydraulic cylinder on the ground (1) coincide with the projection of the central axis of the two parking spaces (14) to be built relative to each other on the ground (1), repeat steps 403 to 406, and complete the construction of another pair of parking spaces (14) in the bottom parking space; Step 408, repeat step 407 until the parking space (14) in the bottom parking space is completed; Step 409: Consider the parking space on the upper layer as the parking space on the lowest layer, and repeat steps 402 to 408 to complete the construction of the parking space; Step 5: Constructing an above-ground parking entrance and exit: constructing an above-ground parking entrance and exit (5) at the location where the immersed tube shaft is located above the ground (1).

2. The construction method of the assembled immersed tube shaft and the radial jacking underground parking lot according to claim 1, Features: The prefabricated first parking corridor (15-2) and the prefabricated second parking corridor (15-1) are both pressed into the side wall of the shaft expansion section (11-2) by a double-plunger rod hydraulic cylinder and extend horizontally into the stratum (2), and the center position of the double-plunger rod hydraulic cylinder is set at the center position of the lifting platform.

3. The construction method of the assembled immersed tube shaft and the radial jacking underground parking lot according to claim 2, Features: The prefabricated reserved plates (6) for the shaft expansion section located in a parking space other than the first underground floor are flat-topped first prefabricated reserved plates (6-2) for the shaft expansion section, the prefabricated reserved plates (6) for the shaft expansion section located in a parking space on the first underground floor are arched second prefabricated reserved plates (6-1) for the shaft expansion section, and the middle of the prefabricated reserved ring (7) for the shaft expansion section is a flat-topped first prefabricated reserved plate (6-2) for the shaft expansion section. The prefabricated reserved ring (7) of the shaft expansion section in a non-underground first floor parking space is a first prefabricated reserved ring (7-2) of the shaft expansion section that cooperates with a first prefabricated reserved plate (6-2) of the shaft expansion section, and the prefabricated reserved ring (7) of the shaft expansion section in the underground first floor parking space is a second prefabricated reserved ring (7-1) of the shaft expansion section that cooperates with a second prefabricated reserved plate (6-1) of the shaft expansion section among the prefabricated reserved rings (7) of the shaft expansion section.

4. The construction method of the assembled immersed tube shaft and the radial jacking underground parking lot according to claim 1, Features: The two prefabricated parking corridors (15) in the parking space (14) are connected via a corridor connector (16).

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