Emergency steel door device for shield tunneling reception in underground closed structure

Abstract

The present application relates to a kind of emergency steel sealing door device for shield tunneling receiving in underground closed structure, emergency steel sealing door is formed by steel column, main beam, small beam and steel plate, steel bracket and concrete bracket are arranged behind emergency steel sealing door, back leaning inclined strut is arranged behind concrete bracket, and counter-pressure bracket and support bracket are arranged on both sides of small beam between steel columns behind steel plate of emergency steel sealing door respectively; human door and air-tight door are arranged in emergency steel sealing door.The present application can be used as an emergency rescue device for risk control of shield tunneling under complex working conditions with complex construction environment and limited ground rescue conditions, and the device can be reused, which saves cost, has simple structure, ingenious design, low manufacturing cost, easy installation, and can be widely used in various engineering constructions by adjusting its shape and size, and has great application value and economic prospect.

Description

Technical Field

[0001] This invention relates to an emergency steel sealing door device for ensuring that the risks of shield tunneling reception are controllable in complex working conditions such as enclosed underground structures with complex surrounding environments and no surface emergency rescue conditions in the event of an emergency. Background Technology

[0002] Shanghai Metro Line 14 is currently the next high-capacity east-west urban rail transit line in the network, following Lines 1 and 2, consisting of 8-car A-type trains. The line starts at Fengbang Station in Jiading, Puxi, and ends at Guiqiao Road Station in Jinqiao, Pudong. Running from west to east, the line traverses the city center, passing through five administrative districts: Jiading, Putuo, Jing'an, Huangpu, and Pudong New Area. The route primarily passes through residential and commercial areas, as well as historical and cultural preservation zones. The line is 38.514 km long, entirely underground, with 31 stations and an average station spacing of 1.273 km. The tunnel construction utilizes precast reinforced concrete segments with a concrete strength grade of C55 and a permeability grade ≥P10. The segments have an inner diameter of φ5900 mm, an outer diameter of φ6600 mm, a thickness of 350 mm, and a standard ring width of 1200 mm, and are assembled using continuous joints.

[0003] The tunnel between Lujiazui Station and Pudong South Road Station in this project has a length of 841.448m for the upline and 838.149m for the downline. The tunnels have a V-shaped longitudinal slope with a gradient of 28‰, and the tunnel top is buried at a depth of 14.8 to 22.8m. Two tunnel boring machines (TBMs) will be used for the tunnel, starting from the west end shaft of Pudong South Road Station and tunneling to the east end shaft of Lujiazui Station. The eastern end shaft of Lujiazui Station has been completed in conjunction with the underground structure construction of the second phase of the IFC Mall. Located near the intersection of Huayuan Shiqiao Road and Yincheng Middle Road, it is a four-story underground structure with a 1200mm diaphragm wall as the retaining structure, 52m deep, and an 800mm thick inner lining. The end shaft is pistol-shaped and located on the third basement level of the operating IFC Mall. It is completely enclosed, and all construction equipment and personnel can only enter through the IFC underground parking entrance. The parking passage is 2.1m high and 6m wide. Using transport vehicles with a height of less than 2.1m, forklifts transport the equipment to the second basement level, where it is then hoisted to the bottom of the end shaft using a simple gantry crane. Due to the limited structural space, large emergency rescue equipment cannot enter, and there are no emergency rescue conditions in case of an accident during the tunnel acceptance phase.

[0004] Therefore, there is an urgent need for a reliable emergency device for receiving tunnel boring machines (TBMs) during tunneling to ensure that the risks of TBM construction are controllable. An emergency device that can effectively prevent the situation from escalating in the event of a sudden emergency, create conditions for subsequent rescue operations, and reduce or mitigate adverse impacts on society is a pressing problem that needs to be solved. Summary of the Invention

[0005] To ensure that the risks of tunnel boring machine (TBM) entry into the underground three-story structure of the IFC Mall are controllable, this invention provides an emergency steel sealing door device for receiving TBMs entering the underground enclosed structure.

[0006] To achieve the above objectives, the technical solution of the present invention is: an emergency steel sealing door device for receiving shield tunneling machines in an underground enclosed structure, comprising: steel columns, main crossbeams, secondary crossbeams, steel plates, a pedestrian door, an airtight door, a rear bracing, steel brackets, concrete brackets, counter-pressure brackets, supporting brackets, and a steel sealing door sealing groove component. The steel columns, main crossbeams, secondary crossbeams, and steel plates constitute the emergency steel sealing door. Behind the emergency steel sealing door are steel brackets and concrete brackets, and behind the concrete brackets are rear bracing. Counter-pressure brackets and supporting brackets are respectively provided on both sides of the secondary crossbeam between the steel columns behind the steel plates of the emergency steel sealing door. A pedestrian door and an airtight door are provided inside the emergency steel sealing door.

[0007] Furthermore, the emergency steel sealing door is sealed in the shield tunnel entry receiving door by a pre-embedded steel sealing door sealing groove component.

[0008] Furthermore, emergency steel sealing doors include "I" type steel sealing doors and "L" type steel sealing doors.

[0009] An installation and usage method for an emergency steel sealing door device includes the following steps:

[0010] (1) Measure and verify the structural dimensions of the end well, and customize and process the steel columns, main beams, small beams, steel plates, pedestrian doors and airtight doors of the steel sealing door according to the internal structural dimensions;

[0011] (2) Pre-embedded installation of steel sealing groove components for steel door sealing, on-site fabrication of concrete brackets, and anchoring of steel brackets with rebars;

[0012] (3) A lifting lug is set above the steel sealing door, and the lifting lug is embedded in the middle of the steel column, symmetrically arranged front and back;

[0013] (4) The three main crossbeams are spliced ​​and welded together;

[0014] (5) Install the lower main crossbeam and calibrate it to be level;

[0015] (6) Using the pre-embedded lifting lugs, four hand-operated hoists were used to hoist the main crossbeam and level it.

[0016] (7) Using the pre-embedded lifting lugs between the upper steel columns, use a hand chain hoist to install the steel columns respectively;

[0017] (8) After the steel columns are installed, the main crossbeam in the middle is lifted and installed.

[0018] (9) After the middle main beam is installed, install the back support to ensure that the main frame structure is stable and reliable.

[0019] (10) Use the pre-embedded lifting lugs above to install the connecting rod from top to bottom;

[0020] (11) After tightening all connecting bolts, install the steel plate seal. After installation, install the airtight door.

[0021] (12) During the factory manufacturing process, the airtight door and door frame are trial-installed to ensure the flatness of the door and door frame. After being disassembled and transported to the site, the airtight door is installed after all the steel-sealed doors are installed.

[0022] (13) After the steel sealing door is installed, an air tightness test is conducted. Once the air tightness test is passed, the shield tunneling entry door removal work is started.

[0023] (14) If mud or sand flows during the shield tunneling process, which may lead to ground subsidence or collapse, the pedestrian gate and airtight door shall be closed immediately. Polyurethane or cement shall be injected into the end well through the reserved opening on the steel sealing door to quickly establish balance, prevent further loss of the surrounding soil, and ensure that the risk of the shield tunneling is controllable.

[0024] In step (14), under the complex working conditions of receiving the tunnel in a closed underground structure with a complex surrounding environment and no ground emergency rescue conditions in case of an emergency, the emergency steel sealing door device can effectively prevent the surrounding soil and water loss and reduce the impact on the surrounding environment in case of an emergency during the tunnel entry, ensuring that the risk of the shield tunneling is controllable.

[0025] The beneficial effects of this invention are:

[0026] This invention relates to an emergency steel sealing door device suitable for receiving tunnel boring machines (TBMs) within enclosed underground structures. This device can serve as a final emergency response measure to control the risks of TBM entry, especially in complex environments with limited surface rescue conditions. The device is reusable, saving costs, and features a simple structure, ingenious design, low manufacturing cost, and easy installation. By adjusting its shape and size, it can be widely applied to various engineering construction projects, demonstrating significant practical value and economic potential. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the steel sealing door layout;

[0028] Figure 2 This is a schematic diagram of the facade layout of a "Type I" steel door.

[0029] Figure 3 This is a schematic diagram of the facade layout of an "L"-shaped steel door. Figure 1 ;

[0030] Figure 4 This is a schematic diagram of the facade layout of an "L"-shaped steel door. Figure 2 ;

[0031] Figure 5 This is a schematic diagram of the cross-sectional layout of the steel-sealed door. Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the cross-sectional layout of the steel-sealed door. Figure 2 ;

[0033] Figure 7 This is a diagram of a pedestrian gate;

[0034] Wherein: (a) is the front view, (b) is the AA sectional view, and (c) is the BB sectional view;

[0035] Figure 8 This is a schematic diagram of an airtight door;

[0036] Wherein: (a) is the front view, and (b) is the AA sectional view;

[0037] Figure 9 This is a schematic diagram of the cross-section of the bottom steel bracket;

[0038] Wherein: (a) is the front view, and (b) is the left sectional view;

[0039] Figure 10 This is a schematic diagram of the plan section of the steel brackets for the bottom side wall and top plate;

[0040] Wherein: (a) is the front view, and (b) is the left sectional view;

[0041] Figure 11 This is a schematic diagram of the layout of the embedded parts for the concrete corbel;

[0042] Figure 12 It is a steel-sealed door sealing groove component. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0044] like Figures 1 to 12 As shown, an emergency steel sealing door device for receiving shield tunneling machines in an underground enclosed structure according to the present invention includes: a steel column 1, a main crossbeam 2, a small crossbeam 3, a steel plate 4, a pedestrian door 5, an airtight door 6, a rear diagonal brace 7, a steel corbel 8, a concrete corbel 9, a counter-pressure corbel 10, a support corbel 11, and a steel sealing door sealing groove component 12, etc.

[0045] The emergency steel sealing door consists of steel column 1, main crossbeam 2, secondary crossbeam 3, and steel plate 4, including type "I" steel sealing door (see...). Figure 2 ) and "L"-shaped steel sealing door (see Figure 3 ,4).

[0046] Behind the emergency steel sealing door are steel brackets 8 and concrete brackets 9. Behind the concrete brackets 9 are rear diagonal braces 7. On both sides of the small crossbeam 3 between the steel columns 1 and the steel plate 4 of the emergency steel sealing door, there are counter-pressure brackets 10 and support brackets 11 respectively. The emergency steel sealing door is sealed to the shield tunnel entrance receiving door by a pre-embedded steel sealing door sealing groove component 12. Inside the emergency steel sealing door are a small pedestrian door 5 and an airtight door 6.

[0047] The installation and usage methods for this device are as follows:

[0048] 1) Measure, lay out, and verify the structural dimensions of the end well; customize and process each component of the steel sealing door according to the internal structural dimensions; 2) Pre-embed and install the steel sealing door sealing groove component 12; fabricate the concrete bracket 9 on site; and anchor the steel bracket 8 with rebar.

[0049] 3) Lifting lugs (above the steel sealing door) 7 sets * 2 points, a total of 14 lifting points. The lifting lugs are pre-embedded in the middle of the steel column 1, symmetrically arranged front and back. One side of the lifting lug is welded to the steel bracket 8 on the top plate, and the other side is bolted to the 40# channel steel pre-embedded bolt 13;

[0050] 4) The three main crossbeams 2 are spliced ​​and welded together, and the weight of a single main crossbeam 2 is 2.544 tons / piece;

[0051] 5) Install the lower main crossbeam 2 (double-layered 56# I-beam) and calibrate it to be level;

[0052] 6) Using the pre-embedded lifting lugs, four 3t hand-operated hoists were used to hoist the main crossbeam 2 (double-section of 56# I-beams) and level it.

[0053] 7) Using the pre-embedded lifting lugs between the upper steel columns 1, and employing a 3-ton hand-operated hoist, install 8 steel columns 1. The columns are made of double-span 56# I-beams, each 4 meters long and weighing approximately 0.848 tons. After being transported to the construction site, they are spliced ​​together on-site, each column being 8 meters long and weighing 1.696 tons.

[0054] 8) After the steel column 1 is installed, the main crossbeam 2 in the middle is then lifted and installed;

[0055] 9) After the middle main crossbeam 2 is installed, install the back support 7 to ensure that the main frame structure is stable and reliable.

[0056] 10) Using the pre-embedded lifting lugs above, install the connecting rod (35# I-beam) from top to bottom, with a single piece weighing 0.5t / piece;

[0057] 11) After all connecting bolts are tightened, install the steel plate 4 for sealing. After installation, install the airtight door 6.

[0058] 12) During the factory manufacturing process, the airtight door 6 and the door frame are trial-installed to ensure the flatness of the door and door frame. After being disassembled and transported to the site, the airtight door 6 is installed after all the steel-sealed doors are installed.

[0059] 13) After the steel sealing door is installed, an airtightness test is conducted. Once the airtightness test is passed, the shield tunneling entry door removal and other related entry work will begin.

[0060] 14) If a major emergency occurs during the shield tunneling process, such as mudflow or quicksand, which may lead to ground subsidence or collapse, the pedestrian gate and airtight door can be closed immediately. Polyurethane or cement can be injected into the end shaft through the reserved opening on the steel sealing door to quickly establish balance, prevent further loss of surrounding soil, and ensure that the risk of shield tunneling is controllable.

Claims

1. An installation and usage method for an emergency steel sealing door device for receiving tunnel boring machines (TBMs) in an underground enclosed structure, the device comprising: The emergency steel sealing door comprises steel columns, main beams, secondary beams, steel plates, a pedestrian door, an airtight door, rear diagonal braces, steel brackets, concrete brackets, counter-pressure brackets, supporting brackets, and a steel sealing door sealing groove component. The steel columns, main beams, secondary beams, and steel plates form the emergency steel sealing door. Behind the emergency steel sealing door are steel brackets and concrete brackets, with rear diagonal braces behind the concrete brackets. Counter-pressure brackets and supporting brackets are respectively provided on both sides of the secondary beam between the steel columns behind the steel plates of the emergency steel sealing door. The emergency steel sealing door contains a pedestrian door and an airtight door. The method is characterized by the following steps: (1) Measure and verify the structural dimensions of the end well, and customize and process the steel columns, main beams, small beams, steel plates, pedestrian doors and airtight doors of the steel sealing door according to the internal structural dimensions; (2) Pre-embedded installation of steel sealing groove components, on-site fabrication of concrete brackets, and anchoring of steel brackets with rebars; (3) A lifting lug is set above the steel sealing door, and the lifting lug is embedded in the middle of the steel column, symmetrically arranged front and back; (4) The three main crossbeams are spliced ​​and welded together; (5) Install the lower main crossbeam and calibrate it to be level; (6) Using the pre-embedded lifting lugs, four hand-operated hoists were used to hoist the main crossbeam and level it. (7) Using the pre-embedded lifting lugs between the upper steel columns, use a hand chain hoist to install the steel columns respectively; (8) After the steel columns are installed, the main crossbeam in the middle is lifted and installed. (9) After the main crossbeam is installed, install the back support to ensure that the main frame structure is stable and reliable. (10) Using the pre-embedded lifting lugs above, install the connecting rod from top to bottom; (11) After tightening all connecting bolts, install the steel plate seal. After installation, install the airtight door. (12) During the factory manufacturing process, the airtight door and door frame are trial-installed to ensure the flatness of the door and door frame. After being disassembled and transported to the site, the airtight door is installed after all the steel-sealed doors are installed. (13) After the steel sealing door is installed, an air tightness test is carried out. Once the air tightness test is qualified, the shield tunneling entry door removal work is started. (14) If mud or sand flows during the shield tunneling process, which may lead to ground subsidence or collapse, the pedestrian gate and airtight door shall be closed immediately. Polyurethane or cement shall be injected into the end well through the reserved opening on the steel sealing door to quickly establish balance, prevent further loss of the surrounding soil, and ensure that the risk of the shield tunneling is controllable.

2. The installation and usage method according to claim 1, characterized in that: The emergency steel sealing door includes a "I" type steel sealing door and an "L" type steel sealing door.

3. The installation and usage method according to claim 1, characterized in that: The emergency steel sealing door is sealed at the emergency sealing opening of the shield tunnel entrance by a pre-embedded steel sealing door sealing groove component.

4. The installation and usage method according to claim 1, characterized in that: In step (14), under the complex working conditions of receiving the tunnel in a closed underground structure with a complex surrounding environment and no ground emergency rescue conditions in case of an emergency, the emergency steel sealing door device can effectively prevent the surrounding soil and water loss and reduce the impact on the surrounding environment in case of an emergency during the tunnel entry, ensuring that the risk of the shield tunnel entering the tunnel is controllable.

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