CN116464099A - A connect bank structure that is used for anchor suspension tunnel to install under water section by section - Google Patents
A connect bank structure that is used for anchor suspension tunnel to install under water section by section Download PDFInfo
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- CN116464099A CN116464099A CN202310271006.1A CN202310271006A CN116464099A CN 116464099 A CN116464099 A CN 116464099A CN 202310271006 A CN202310271006 A CN 202310271006A CN 116464099 A CN116464099 A CN 116464099A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 239000000725 suspension Substances 0.000 title claims abstract description 83
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 238000009434 installation Methods 0.000 claims abstract description 55
- 238000005192 partition Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 239000011150 reinforced concrete Substances 0.000 claims description 14
- 210000001503 joint Anatomy 0.000 claims description 12
- 238000011065 in-situ storage Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 31
- 238000007667 floating Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000004873 anchoring Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a shore connection structure for underwater section-by-section installation of an anchored suspension tunnel, which comprises an indoor part, an outdoor part, a jacking device, a pair of rails, a pair of rail groove sealing devices and a water supply and drainage system. The indoor part is provided with a jacking chamber, a partition wall and an outfitting chamber; the rear end of the jacking chamber is provided with a back water side wall; the front end of the outfitting chamber is a water facing side wall, and a connecting section tunnel is arranged at the lower part of the outfitting chamber; an outfitting chamber inlet is formed in the partition wall and is blocked by an inlet end sealing door; an outfitting chamber outlet is formed in the water facing side wall and is blocked by an outlet end sealing door; the outdoor part comprises a starting section tunnel and a slope protection which are sequentially connected to the front port of the connecting section tunnel; the jacking device is arranged at the bottom of the jacking chamber; a pair of rails are arranged on the top surfaces of the connecting section tunnel and the starting section tunnel; the pair of track groove sealing devices and the pair of tracks are arranged at the bottom of the outfitting chamber outlet in a one-to-one correspondence manner; the water supply and drainage system is arranged between the outfitting room and the external water body. The invention can realize the functions of transportation, outfitting and the like of the pipe joints of the suspension tunnel.
Description
Technical Field
The invention relates to a shore connection structure for underwater section-by-section installation of an anchored suspension tunnel.
Background
The water suspension tunnel is named as Submerged Floating Tunnel and SFT for short. In Italy, the bridge is also called an "Archimedes bridge", abbreviated as "PDA" bridge. Generally consists of a tubular structure floating in water to a certain depth (the space of the structure is large enough to meet the requirements of road and railway traffic), a support system (anchor cables anchored on a seabed foundation, pier columns or buoyancy tanks on water) and structures on both sides. The novel structure is suitable for all traffic vehicles needing to pass through water, can pass trains, automobiles, small motor vehicles and pedestrians, and can also be made into service channels for passing through various pipelines and cables. The differences between the underwater suspension tunnel and the traditional submerged tunnel or tunneling tunnel are as follows: the suspended tunnel structure is surrounded by water, not located on or across the formation, but rather is held in a fixed position primarily by the gravity of its own structure, the buoyancy to which the structure is subjected, and the anchoring forces of the support system. The suspended tunnel is sealed around, and this structure has all the characteristics of a normal tunnel and should be considered as a "tunnel" rather than a "bridge" from a use point of view.
The suspended tunnels may traverse different waters such as rivers, fjords, straits, lakes, etc., providing a possible and acceptable form of fixed spanning structure for those places considered to be non-spanable due to the consideration of deep water or too great a distance between the sides. The suspended tunnel is built under water to a certain depth, and compared with the open-type channel and ferry transportation on the water surface, the weather such as severe stormy waves, fog, rain, snow and the like cannot influence all-weather operation of the suspended tunnel. On the premise of ensuring the same navigation capacity, compared with a bridge, the gradient of the suspension tunnel is gentle and the total length is reduced, and the suspension tunnel cannot influence the environment and natural landscapes in the construction process and the use of the suspension tunnel; when the span and the water depth are exceeded, the unit cost of the suspension tunnel is not obviously increased along with the increase of the length of the crossing channel or the depth of the water channel, and the unit cost of the cable-stayed bridge and the suspension bridge is obviously increased along with the increase of the span.
Although the suspension tunnel has certain advantages compared with the sea-crossing channels such as immersed tunnel, deep buried tunnel, bridge and the like, the design and construction of the suspension tunnel are still a worldwide problem, and no built suspension tunnel exists so far. Currently, 7 countries (norway, italy, japan, china, swiss, brazil, united states) are mainly studied in the world, and many technical problems found in the research are mainly: overall structural arrangement, tunnel materials, structural style of the anchoring system, connection style of the tunnel, landing structural design, tunnel structural feasibility, construction and operational risks, etc. Whether these problems can be solved or not determines whether the suspended tunnel can go from a viable solution to actual engineering.
Heretofore, in the study of a suspended tunnel, the proposed structural types can be roughly divided into three types according to the relationship between the gravity of the suspended tunnel and the buoyancy of the suspended tunnel: float, anchored, pier column. The floating pontoon type suspension tunnel is characterized in that the tunnel is suspended on a pontoon on the water surface through an anchor rope or an anchor chain, the gravity of the tunnel is larger than the buoyancy, and the vertical direction is greatly affected by the fluctuation of the tide level; the anchoring type suspension tunnel is characterized in that the tunnel is anchored on an anchorage foundation below the seabed through tension legs or anchor cables, the gravity of the tunnel is smaller than the buoyancy, and the tunnel can displace or shake under the action of hydrodynamic force; pier columns are actually tunnel bridges supported on underwater pier columns, and are difficult to construct and expensive to manufacture.
At present, the anchor type suspension tunnel structure is studied for a long time at home and abroad, and consists of an underwater suspension tunnel pipe body, a shore connection structure, an anchor system, a floating weight ratio adjusting system, tunnel auxiliary facilities and the like. The tunnel pipe joint is provided with a inhaul cable anchor and is fixed on the seabed through an anchoring foundation, two ends of the pipe joint are connected with a shore connection structure, and the pipe joint is connected with a ground road through a land slope tunnel.
Because the suspension tunnel is positioned at a deeper position under water, three types of suspension tunnels are very difficult to transport in pipe joints, locate under water and install and butt joint under water or on water, the safety risk is very high, and mature construction technology which is successfully implemented is not available. The technology that can be referenced at present for the installation and construction of the suspension tunnel is that the immersed tube tunnel is floating on water, submerged and refuted, the technology is greatly affected by wind, wave, current, traveling wave and the like, for example, the immersed tube floating of the bridge of the port-ball Australian bridge is installed for one month only for one window period, and the channel needs to be sealed during the tube section floating, so that the influence on the water traffic is great, the construction cost is high, and the safety risk is also great.
In order to fill the blank of the underwater section-by-section installation technology of the pipe sections of the suspension tunnel, a construction method for underwater section-by-section installation of the anchoring type suspension tunnel is particularly provided, and most of implementation of the construction method is needed to be carried out in a shore connection structure, so that a shore connection structure suitable for the construction method is required to be developed.
Disclosure of Invention
The invention aims to fill the blank of the prior art, and particularly provides a shore connection structure for underwater section-by-section installation of an anchored suspension tunnel, which can realize the functions of pipe joint transportation, outfitting and the like of the anchored suspension tunnel and provides a safer, efficient and economical matching structure for the installation of the suspension tunnel.
The purpose of the invention is realized in the following way: a shore connection structure for underwater section-by-section installation of an anchored suspension tunnel comprises an indoor part, an outdoor part, a jacking device, a pair of rails, a pair of rail groove sealing devices and a water supply and drainage system; wherein, the liquid crystal display device comprises a liquid crystal display device,
the indoor part is sequentially provided with a jacking chamber, a partition wall and an outfitting chamber from the land area to the sea area; the rear end of the jacking chamber is a back water side wall of the indoor part, and the lower part of the back water side wall is provided with a hole communicated with the land slope section tunnel; the front end of the outfitting chamber is a water facing side wall of the indoor part, the lower part of the outfitting chamber is provided with a connecting section tunnel, and the rear port of the connecting section tunnel is communicated with the jacking chamber; the partition wall is provided with an outfitting chamber inlet right above the rear port of the connecting section tunnel, and the outfitting chamber inlet is plugged by an inlet end sealing door; the water-facing side wall is provided with an outfitting chamber outlet right above the front port of the connecting section tunnel, and the outfitting chamber outlet is blocked by adopting an outlet end sealing door;
the outdoor part comprises a starting section tunnel and a slope protection which are sequentially connected to the front port of the connecting section tunnel; the front end of the starting section tunnel is in butt joint with the rear end of the suspension tunnel pipe joint, and steel seal doors are arranged at the joint of the starting section tunnel and the connecting section tunnel and the joint of the starting section tunnel and the suspension tunnel pipe joint;
the jacking device is arranged at the bottom of the jacking chamber;
the pair of rails are arranged on the top surface of the connecting section tunnel and the top surface of the starting section tunnel, and correspond to the pair of rails arranged on the top surface of the suspension tunnel pipe section one by one;
the pair of track groove sealing devices and the pair of tracks are arranged at the bottom of the outfitting chamber outlet in a one-to-one correspondence manner;
the water supply and drainage system is arranged between the outfitting room and the external water body.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel is characterized in that the back water side wall, the front water side wall and the left and right outer walls of the indoor part are all ground connection wall structures; the partition wall, the left and right side walls of the jacking chamber, the left and right side walls of the outfitting chamber and the top plate and the bottom plate of the indoor part are all cast-in-situ reinforced concrete structures.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel is characterized in that a steel door frame and a rubber water stop strip are arranged at an outfitting chamber inlet on the partition wall and an outfitting chamber outlet on the water facing side wall; the inlet end sealing door is of a steel plate door structure; the outlet end sealing door is of a reinforced concrete caisson structure with multiple compartments.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel comprises a caisson shell, wherein the outlet end sealing door consists of a bottom plate and four side walls, the caisson shell is divided into a plurality of compartments by a plurality of transverse partition walls and a plurality of longitudinal partition walls, the transverse partition walls and the longitudinal partition walls are provided with a plurality of through holes at intervals along the height direction, and a communication valve is arranged in each through hole; the top standard height of the outlet end sealing door is 2-3 m higher than the highest water level of the external water body, the wave height and the surplus height, the width of the outlet end sealing door is the width of the outlet of the outfitting room and at least 8m, and the thickness of the outlet end sealing door is required to meet the requirements of installation, removal and stability of the seat bottom.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel comprises a steel shell for accommodating the track, a pair of hydraulic jacks and a pair of steel piston heads; the steel shell is embedded and fixed in the water facing side wall; a pair of hydraulic jacks are horizontally and symmetrically arranged at two sides of the steel shell; the pair of steel piston heads are symmetrically arranged on piston rods of the pair of hydraulic jacks, the front end surfaces of the pair of steel piston heads are respectively provided with a cavity matched with the side surface shape of the rail, and the surfaces of the cavities are provided with rubber water stop strips.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel is characterized in that a plurality of anchor bars inserted into the water facing side wall are welded on the outer surface and the bottom surface of the periphery of the steel shell of the track groove sealing device.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel is characterized in that the land slope section tunnel is constructed by adopting a mining method, and the lining structure is cast in situ.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel is characterized in that the inner diameter of the connecting section tunnel is the same as the inner diameter of the pipe section of the suspension tunnel, the connecting section tunnel adopts a cast-in-situ reinforced concrete structure, the wall thickness of the connecting section tunnel is required to meet the load requirement of the outfitting chamber, the bottom of the connecting section tunnel is anchored with the bottom plate of the indoor part, and the left side and the right side of the connecting section tunnel are anchored with the left side wall and the right side wall of the outfitting chamber.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel is characterized in that the inner diameter of the starting section tunnel is the same as that of the pipe section of the suspension tunnel, and the starting section tunnel adopts a reinforced concrete structure and is installed after prefabrication.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel is characterized in that the slope protection is of a stone throwing structure, and is constructed by adopting underwater stone throwing, slope adjusting and tamping leveling processes.
The shore connection structure for underwater section-by-section installation of the anchored suspension tunnel has the following characteristics:
(1) The shore connection structure can realize the functions of transportation, outfitting and the like of the pipe joints of the anchored suspension tunnel, is an important matching structure for underwater section-by-section installation of the anchored suspension tunnel, and fills the technical blank of underwater section-by-section installation of the suspension tunnel;
(2) The influence of wind, wave and current on the transportation of the pipe joints of the suspension tunnel is greatly reduced, the window period of the transportation of the pipe joints of the suspension tunnel is greatly increased, and the transportation efficiency and the safety are improved;
(3) The influence of wind, wave and current on the sinking and docking of the pipe joints of the suspension tunnel is obviously reduced, the pendulum effect can be effectively avoided, the window period of the sinking and the mounting of the pipe joints of the suspension tunnel is greatly increased, and the mounting efficiency, the safety and the accuracy of the pipe joints of the suspension tunnel are improved;
(4) The frequency of using the construction ship in the installation and construction of the suspended tunnel pipe joint is low, and a large-scale ship machine is basically not needed, so that the influence on the passage of the water surface ship is small, the risk of marine traffic safety can be greatly reduced, the construction period can be greatly shortened, and the construction cost is effectively reduced.
Drawings
FIG. 1 is a side view (tunnel construction period) of a landing structure for underwater section-by-section installation of an anchored suspension tunnel of the present invention;
FIG. 2 is a cross-sectional view of the outlet end seal door in the landing configuration of the present invention;
FIG. 3 is a plan view of the outlet end seal door in the landing configuration of the present invention;
FIG. 4 is a cross-sectional view (open) of the track groove seal in the landing configuration of the present invention;
FIG. 5 is a cross-sectional view (closed state) of the track groove seal in the landing configuration of the present invention;
FIG. 6a is a state diagram of a landing structure of the present invention at step one of the suspension tunnel construction period;
FIG. 6b is a state diagram of a second step of the landing structure of the present invention during the construction period of a suspended tunnel;
FIG. 6c is a state diagram of a third step of the operation of the landing structure of the present invention during the construction period of a suspended tunnel;
FIG. 6d is a state diagram of a fourth step of the operation of the landing structure of the present invention during the construction period of a suspended tunnel;
FIG. 6e is a state diagram of a fifth step of the landing structure of the present invention during the construction period of a suspended tunnel;
FIG. 6f is a state diagram of a step six of the landing structure of the present invention during the construction period of a suspended tunnel;
fig. 7 is a side view (tunnel operating period) of the landing structure for underwater section-by-section installation of an anchored suspension tunnel of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, the landing structure for underwater section-by-section installation of an anchored suspension tunnel of the present invention includes an indoor portion 3 and an outdoor portion, a jacking 9, a pair of rails 8, a pair of rail groove sealing devices 8A, and a water supply and drainage system 10.
The indoor part 3 is formed by enclosing a back water side wall 3A, a front water side wall 3B and left and right outer walls of a waterproof ground connection wall structure; the indoor part 3 is provided with a jacking chamber 31, a partition wall 30 and an outfitting chamber 32 in sequence from land to sea; wherein, the liquid crystal display device comprises a liquid crystal display device,
the partition wall 30, the left and right side walls of the jacking room, the left and right side walls of the outfitting room and the top plate and the bottom plate of the indoor part 3 are all cast-in-situ reinforced concrete structures.
The length and width of the jacking chamber 31 should be designed according to the length and diameter of the suspension tunnel pipe joint 1; the rear end of the jacking chamber 31 is provided with a backwater side wall 3A, and the lower part of the backwater side wall 3A is provided with a hole communicated with the land slope section tunnel 2; the land slope section tunnel 2 is a connection tunnel between the jacking chamber 31 and a ground road; the land slope section tunnel 2 is constructed by adopting a mining method, and a lining structure is cast in situ;
the length and width of the outfitting chamber 32 should be designed according to the length and diameter of the suspended tunnel pipe section 1 and the size of the installation trolley 13, with a certain margin. The front end of the outfitting chamber 32 is a water facing side wall 3B, the lower part of the outfitting chamber 32 is provided with a connecting section tunnel 5, and the rear port of the connecting section tunnel 5 is communicated with the jacking chamber 31; the connecting section tunnel 5 adopts a cast-in-situ reinforced concrete structure, the inner diameter of the connecting section tunnel 5 is the same as the inner diameter of the suspended tunnel pipe joint 1, the wall thickness of the connecting section tunnel 5 is required to meet the load requirement of the outfitting chamber 32, the bottom of the connecting section tunnel 5 is anchored with the bottom plate of the indoor part, and the left side and the right side of the connecting section tunnel 5 are anchored with the left side and the right side of the outfitting chamber.
The partition wall 30 is provided with an outfitting chamber inlet right above the rear port of the connecting section tunnel 5, the outfitting chamber inlet is provided with a steel door frame and a rubber water stop strip, and the outfitting chamber inlet is blocked by adopting an inlet end sealing door 11; the inlet end sealing door 11 is of a steel plate door structure, and rubber water stop strips are arranged on the periphery of the inlet end sealing door to prevent water leakage when the door is closed; the size of the inlet end sealing door 11 is designed according to the diameter of the suspended tunnel pipe joint 1, a certain margin is reserved, and the strength and the rigidity of the inlet end sealing door 11 meet the requirement of water pressure during closing;
the water-facing side wall 3B is provided with an outfitting chamber outlet right above the front port of the connecting section tunnel 5, the outfitting chamber outlet is provided with a steel door frame and a rubber water stop strip, and the outfitting chamber outlet is plugged by adopting an outlet end sealing door 12.
The outlet end sealing door 12 is a reinforced concrete caisson structure with multiple compartments; the outlet end sealing door 12 is a caisson shell formed by a bottom plate 120 and four side walls 121, the interior of the caisson shell is divided into a plurality of compartments by a plurality of transverse partition walls 122 and a plurality of longitudinal partition walls 123, the transverse partition walls 122 and the longitudinal partition walls 123 are provided with a plurality of through holes at intervals along the height direction, and a communication valve 124 is arranged in each through hole (see fig. 2 and 3); the liquid level elevation of each compartment in the caisson is conveniently controlled by injecting water into and draining water from the caisson. Sinking or floating of the outlet end sealing door 12 is achieved through water injection and drainage into the plurality of compartments, and the outlet end sealing door 12 is moved and positioned and installed by a tug after floating. When the stability requirement cannot be met by filling water into the caisson, the dead weight of the outlet end sealing door 12 can be increased by backfilling sand and stone into the caisson. The top mark height of the outlet end sealing door 12 is 2-3 m higher than the highest water level of the external water body, the wave height and the surplus height, the width of the outlet end sealing door 12 is the width of the outlet of the outfitting chamber and at least 8m, namely the width of the outlet end sealing door 12 is at least 4m on two sides of the outlet of the outfitting chamber, and the thickness of the outlet end sealing door 12 is required to meet the stability requirements of installation, removal and seat bottom.
According to the construction method of the outfitting room outlet, the building is firstly constructed on the upstream surface of the shore structure to form a diaphragm wall maintenance structure, then the diaphragm wall maintenance structure is excavated in a layered manner to form a foundation pit, and the rectangular outfitting room outlet is formed by cutting the upstream side wall 3B by mechanical cooperation with manual work. The steel door frame of outfitting room export is pre-buried when the wall construction is even to the ground, carries out the installation of steel door frame and rubber sealing strip after the cutting of outfitting room export is accomplished and passes through the clearance between grout technology shutoff steel door frame and the wall even to the ground, and steel door frame installation surface roughness should be less than 3mm/m. And dismantling the foundation pit maintenance structure after the complete construction of the outfitting room outlet.
The outdoor part comprises a starting section tunnel 6 and a slope protection 7 which are sequentially connected to the front port of the connecting section tunnel 5; wherein, the liquid crystal display device comprises a liquid crystal display device,
the inner diameter of the starting section tunnel 6 is the same as that of the suspension tunnel pipe joint 1, and the starting section tunnel 6 adopts a reinforced concrete structure and is prefabricated and then installed; the front end of the starting section tunnel 6 is in butt joint with the rear end of the suspension tunnel pipe joint 1, and steel seal doors are arranged at the joint of the starting section tunnel 6 and the connecting section tunnel 5 and the joint of the starting section tunnel 6 and the suspension tunnel pipe joint 1;
the slope protection 7 adopts a stone throwing structure and is constructed by adopting the processes of underwater stone throwing, slope arranging, tamping and leveling.
The jacking device 9 is arranged at the bottom of the jacking chamber 31; the jacking device 9 comprises a plurality of jacks and a steel structure jacking beam arranged on the jacks.
A pair of rails 8 are arranged on the top surface of the connecting section tunnel 5 and the top surface of the starting section tunnel 6, and the pair of rails 8 are in one-to-one correspondence with a pair of rails arranged on the top surface of each section of the suspension tunnel pipe joint 1; the cross section of the rail 8 is I-shaped.
A pair of track groove sealing devices 8A are arranged at the bottom of the outlet of the outfitting chamber in one-to-one correspondence with the pair of tracks 8; the track groove sealing device 8A is used for sealing gaps at two sides of the track 8 and forms a sealed water blocking system together with the outlet end sealing door 12 for the outfitting room 32, so that water outside the indoor part is prevented from entering the outfitting room 32.
The rail groove seal 8A includes a steel housing 80, a pair of hydraulic jacks 82 and a pair of steel piston heads 153; the steel shell 80 comprises a bottom plate, two vertical plates connected to two sides of the bottom plate in a one-to-one correspondence manner, and a left top plate and a right top plate connected to the tops of the two vertical plates in a one-to-one correspondence manner, so that the top of the steel shell 80 is provided with a notch with a width larger than the cross section width of the track 8, and a plurality of anchor bars 81 are welded on the bottom surface of the steel shell 80, the outer surfaces of the two vertical plates, the outer surface of the left top plate and the outer surface of the right top plate, so that the steel shell 80 is fixed in the water facing side wall 3B through the anchor bars; the rail 8 is fixed in the middle of the bottom plate of the steel shell 80; a pair of hydraulic jacks 82 are symmetrically installed at the middle of the inner surfaces of the two risers of the steel shell 80; a pair of steel piston heads 83 are symmetrically arranged on piston rods of a pair of hydraulic jacks 82, the top surfaces of the pair of steel piston heads 83 are in movable sealing contact with the bottom surface of a left top plate and the bottom surface of a right top plate of a steel shell 80 in one-to-one correspondence, the bottom surfaces of the pair of steel piston heads 83 are in movable sealing contact with the top surface of the bottom surface of the steel shell 80, a cavity which is matched with the side surface shape of a rail 8 is arranged on the front end surface of the pair of steel piston heads 83, and a rubber water stop strip 84 (see fig. 4 and 5) is arranged on the surface of the cavity to ensure the water stop effect; the anchor bars 81 on the outer surface of the steel casing 80 serve to strengthen the coupling force with the surrounding concrete. The track groove sealing device 8A and the outfitting room outlet are synchronously constructed, and the track groove sealing device is transported to a construction site after the manufacturing of a processing plant is completed and then integrally installed. The track groove sealing device 8A is installed under the condition of dry construction in a foundation pit, and concrete pouring of the water facing side wall 3B is carried out after the installation is completed.
The water supply and drainage system 10 is arranged between the outfitting room 32 and the external water body; the water supply and drainage system 10 comprises a high-power high-lift water pump arranged in the outfitting chamber 32 and a water pipe connected with a water outlet of the water pump and communicated with the water body at the front side of the water facing side wall 3B, wherein the water pump pumps water in the outfitting chamber 32 out, and water can be injected into the outfitting chamber 32 through a water supply pipeline to realize the dry-wet conversion function of the outfitting chamber 32.
According to the shore connection structure for underwater section-by-section installation of the anchored suspension tunnel, the steel seal door at the outermost side of the pipe section 1 of the suspension tunnel is always kept in a closed state in the construction period of the suspension tunnel, so that water is prevented from flowing backward into the indoor part 3 of the shore connection structure from the inside of the pipe section 1 of the suspension tunnel; the outfitting chamber 32 plays a role in connecting the shore structure with outside water, dry-wet conversion of the outfitting chamber 32 is realized through the inlet end sealing door 11 and the outlet end sealing door 12, and meanwhile, the indoor part 3 of the shore structure is always in a dry construction state. The outfitting room 32 is a key structure for transferring the suspended tunnel pipe joint 1 from land to water. Closing the inlet end sealing door 11, opening the outlet end sealing door 12 after water is injected into the outfitting chamber 32, and communicating the outfitting chamber 32 with the water area on the water facing side; the outlet end sealing door 12 and the track groove sealing device 8A are closed, accumulated water in the outfitting chamber 32 is pumped out through the water supply and drainage system 10, the inlet end sealing door 11 is opened, and the outfitting chamber 32 can be communicated with the land slope tunnel 2. This design ensures that seawater does not back-flow into the indoor section 3 of the landing structure and land-slope tunnel 2 throughout the wet-dry conversion process.
The working steps of the shore connection structure in the installation construction period of the tunnel pipe joint are as follows:
step one: firstly, closing an inlet end sealing door 11, blocking an outlet of an outfitting chamber through an outlet end sealing door 12 and a track groove sealing device 8A, pumping water in the outfitting chamber 32 through a water supply and drainage system 10 to form a dry construction environment, opening the inlet end sealing door 11, assembling a mounting trolley 4 in place in the outfitting chamber 32, and then transporting a suspension tunnel pipe joint 1' to be mounted to a jacking device 9 in a jacking chamber 31 from a land slope tunnel 2 (see figure 6 a);
step two: the vertical movement of the suspended tunnel pipe section 1' to be installed is completed by the lifting of the jack of the lifting device 9 (see fig. 6 b);
step three: firstly, penetrating a carrying air bag between a suspension tunnel pipe joint 1 'to be installed and a jacking beam of a jacking device 9, horizontally moving the suspension tunnel pipe joint 1 to be installed into an installation trolley 4 forwards after the carrying air bag is inflated, and then fixing the suspension tunnel pipe joint 1' to be installed and the installation trolley 4 (see figure 6 c);
step four: closing the inlet end sealing door 11, injecting water into the outfitting room 32 through the water supply and drainage system 10 and adjusting the floating weight ratio of the to-be-installed suspended tunnel pipe joint 1' and the installation trolley 4, so that the floating weight ratio of the to-be-installed suspended tunnel pipe joint 1' is slightly less than 1, the floating weight ratio of the installation trolley 4 is slightly more than 1, the integral floating weight ratio of the installation trolley 4 and the to-be-installed suspended tunnel pipe joint 1' is slightly more than 1, the buoyancy of the to-be-installed suspended tunnel pipe joint 1' is slightly less than the gravity, the additional vertical load is not required to be provided in the installation and submergence process of the to-be-installed suspended tunnel pipe joint 1', the installation trolley 4 is ensured to always keep the buoyancy greater than the gravity and not to sink in the process of driving and installing the pipe joint, and then the outlet end sealing door 12 and the track sealing device 8A are opened (see fig. 6 d);
step five, hauling the suspension tunnel pipe joint 1' to be installed to an installation position along a pair of rails 8 by an installation trolley 13 (see fig. 6 e);
step six: the rear end of a suspension tunnel pipe joint 1' to be installed is butted with the front end of a starting section tunnel 6 or the front end of the installed suspension tunnel pipe joint 1, after the installation is finished, the installation trolley 4 retreats to the outfitting chamber 32, the outlet end sealing door 12 and the track groove sealing device 8A are closed, a dry construction condition is formed by draining the outfitting chamber 32 through the water supply and drainage system 10, and the inlet end sealing door 11 is opened;
step seven, repeating the steps one to six, and installing the next section of the suspension tunnel pipe joint 1 (see fig. 6 f); after all the suspended tunnel pipe joints 1 are installed, the installation trolley 4 is removed, the outlet of the outfitting room is plugged by cast-in-situ reinforced concrete, and the construction of the cast-in-situ reinforced concrete tunnel section 3C (see fig. 7) is completed at the lower part of the jacking room 31, so that all the suspended tunnels are penetrated, and the function of the conversion structure of the suspended tunnels and the land road is exerted.
The above embodiments are provided for illustrating the present invention and not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention, and thus all equivalent technical solutions should be defined by the claims.
Claims (10)
1. A shore connection structure for underwater section-by-section installation of an anchored suspension tunnel comprises an indoor part, an outdoor part, a jacking device, a pair of rails, a pair of rail groove sealing devices and a water supply and drainage system; it is characterized in that the method comprises the steps of,
the indoor part is sequentially provided with a jacking chamber, a partition wall and an outfitting chamber from the land area to the sea area; the rear end of the jacking chamber is a back water side wall of the indoor part, and the lower part of the back water side wall is provided with a hole communicated with the land slope section tunnel; the front end of the outfitting chamber is a water facing side wall of the indoor part, the lower part of the outfitting chamber is provided with a connecting section tunnel, and the rear port of the connecting section tunnel is communicated with the jacking chamber; the partition wall is provided with an outfitting chamber inlet right above the rear port of the connecting section tunnel, and the outfitting chamber inlet is plugged by an inlet end sealing door; the water-facing side wall is provided with an outfitting chamber outlet right above the front port of the connecting section tunnel, and the outfitting chamber outlet is blocked by adopting an outlet end sealing door;
the outdoor part comprises a starting section tunnel and a slope protection which are sequentially connected to the front port of the connecting section tunnel; the front end of the starting section tunnel is in butt joint with the rear end of the suspension tunnel pipe joint, and steel seal doors are arranged at the joint of the starting section tunnel and the connecting section tunnel and the joint of the starting section tunnel and the suspension tunnel pipe joint;
the jacking device is arranged at the bottom of the jacking chamber;
the pair of rails are arranged on the top surface of the connecting section tunnel and the top surface of the starting section tunnel, and correspond to the pair of rails arranged on the top surface of the suspension tunnel pipe section one by one;
the pair of track groove sealing devices and the pair of tracks are arranged at the bottom of the outfitting chamber outlet in a one-to-one correspondence manner;
the water supply and drainage system is arranged between the outfitting room and the external water body.
2. The shore connection structure for underwater section-by-section installation of an anchored suspension tunnel according to claim 1, wherein the back water side wall, the front water side wall and the left and right outer walls of the indoor part are all ground connection wall structures; the partition wall, the left and right side walls of the jacking chamber, the left and right side walls of the outfitting chamber and the top plate and the bottom plate of the indoor part are all cast-in-situ reinforced concrete structures.
3. The shore structure for underwater section-by-section installation of an anchored suspended tunnel according to claim 1, wherein the outfitting chamber inlet on the partition wall and the outfitting chamber outlet on the water-facing side wall are both provided with a steel door frame and a rubber water stop strip; the inlet end sealing door is of a steel plate door structure; the outlet end sealing door is of a reinforced concrete caisson structure with multiple compartments.
4. The shore connection structure for underwater section-by-section installation of an anchored suspension tunnel according to claim 3, wherein the outlet end sealing door comprises a caisson shell formed by a bottom plate and four side walls, the caisson shell is divided into a plurality of compartments by a plurality of transverse walls and a plurality of longitudinal walls, the transverse walls and the longitudinal walls are provided with a plurality of through holes at intervals along the height direction, and a communication valve is arranged in each through hole; the top standard height of the outlet end sealing door is 2-3 m higher than the highest water level of the external water body, the wave height and the surplus height, the width of the outlet end sealing door is the width of the outlet of the outfitting room and at least 8m, and the thickness of the outlet end sealing door is required to meet the requirements of installation, removal and stability of the seat bottom.
5. The landing structure for underwater section-by-section installation of an anchored suspended tunnel of claim 1, wherein said track groove sealing means comprises a steel housing containing said track, a pair of hydraulic jacks and a pair of steel piston heads; the steel shell is embedded and fixed in the water facing side wall; a pair of hydraulic jacks are horizontally and symmetrically arranged at two sides of the steel shell; the pair of steel piston heads are symmetrically arranged on piston rods of the pair of hydraulic jacks, the front end surfaces of the pair of steel piston heads are respectively provided with a cavity matched with the side surface shape of the rail, and the surfaces of the cavities are provided with rubber water stop strips.
6. The shore connection structure for underwater section-by-section installation of an anchored suspended tunnel of claim 5, wherein a plurality of anchor bars inserted into said water-facing side wall are welded on the outer surface and the bottom surface of the periphery of the steel casing of said track groove sealing device.
7. The shore connection structure for underwater section-by-section installation of an anchored suspension tunnel according to claim 1, wherein the land slope section tunnel is constructed by adopting a mining method, and the lining structure is cast in situ.
8. The shore structure for underwater section-by-section installation of an anchored suspension tunnel according to claim 1, wherein the inner diameter of the connecting section tunnel is the same as the inner diameter of the pipe section of the suspension tunnel, the connecting section tunnel adopts a cast-in-situ reinforced concrete structure, the wall thickness of the connecting section tunnel is required to meet the load requirement of the outfitting chamber, the bottom of the connecting section tunnel is anchored with the bottom plate of the indoor part, and the left side and the right side of the connecting section tunnel are anchored with the left side and the right side of the outfitting chamber.
9. The shore connection structure for underwater section-by-section installation of an anchored suspension tunnel according to claim 1, wherein the inside diameter of the starting section tunnel is the same as the inside diameter of the suspension tunnel pipe section, and the starting section tunnel adopts a reinforced concrete structure and is installed after prefabrication.
10. The shore connection structure for underwater section-by-section installation of an anchored suspension tunnel according to claim 1, wherein the revetment is a riprap structure and is constructed by underwater riprap, slope-adjusting and tamping leveling processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310271006.1A CN116464099A (en) | 2023-03-17 | 2023-03-17 | A connect bank structure that is used for anchor suspension tunnel to install under water section by section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310271006.1A CN116464099A (en) | 2023-03-17 | 2023-03-17 | A connect bank structure that is used for anchor suspension tunnel to install under water section by section |
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| Publication Number | Publication Date |
|---|---|
| CN116464099A true CN116464099A (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310271006.1A Pending CN116464099A (en) | 2023-03-17 | 2023-03-17 | A connect bank structure that is used for anchor suspension tunnel to install under water section by section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116464099A (en) |
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2023
- 2023-03-17 CN CN202310271006.1A patent/CN116464099A/en active Pending
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