CN111424715B - Artificial island pipe joint connecting system for relay extension of suspended tunnel - Google Patents
Artificial island pipe joint connecting system for relay extension of suspended tunnel Download PDFInfo
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- CN111424715B CN111424715B CN202010244335.3A CN202010244335A CN111424715B CN 111424715 B CN111424715 B CN 111424715B CN 202010244335 A CN202010244335 A CN 202010244335A CN 111424715 B CN111424715 B CN 111424715B
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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
- E02D29/067—Floating tunnels; Submerged bridge-like tunnels, i.e. tunnels supported by piers or the like above the water-bed
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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Abstract
The invention discloses an artificial island pipe joint connecting system for relay extension of a suspension tunnel, which comprises an artificial island receiving side shore structure and an artificial island pushing side shore structure. The receiving side shore structure of the artificial island comprises a receiving section, a receiving side island wall section, a receiving side thrust section, an anchoring connection section and a traction anchorage section which are sequentially arranged from the sea area to the inside of the island. The artificial island pushing side shore structure comprises a pushing section, a pipe joint connecting section, a pushing side thrust section, a pushing side island wall section and a starting section which are sequentially arranged from the inside of the island to the sea area; the outer surface of the head of the pipe joint entering the relay artificial island is solidified with the inner surface of the pipe joint anchoring box through pouring concrete; and the outer surface of the tail part of the pipe joint left in the relay artificial island and the inner surface from the front part of the pushing section to the pipe joint connecting section are solidified through pouring concrete. The artificial island pipe joint connecting system can receive and pull pipe joints during the pushing installation of the prior pipe joint span, and can simultaneously carry out the connection and the pushing of the subsequent pipe joint span.
Description
Technical Field
The invention relates to an underwater suspension tunnel, in particular to an artificial island pipe joint connecting system for relay extension of a suspension tunnel.
Background
The underwater suspension Tunnel is called a 'focused Floating Tunnel' in English, and is called 'SFT' for short. Also known in italy as archimedes bridge. The differences between the underwater suspension tunnel and the traditional buried tunnel or tunneling tunnel are as follows: the suspended tunnel structure is surrounded by water and is neither located on nor traversing the ground, but is held in a fixed position primarily by the weight of its own structure, the buoyancy experienced by the structure, and the anchoring forces of the support system. The floating tunnel is sealed around, and the structure has all the characteristics of a common tunnel and is considered to be a tunnel rather than a bridge from the use point of view.
Although the suspension tunnel has certain advantages compared with the scheme of cross-sea passages such as immersed tube tunnels, deep-buried tunnels, bridges and the like, the design and construction of the suspension tunnel are still a worldwide problem, and no established suspension tunnel exists so far. Currently, there are mainly 7 countries (norway, italy, japan, china, swiss, brazil, usa) in the world under study, and many technical problems found by the study are mainly: overall structural arrangement, tunnel materials, anchoring system structural style, tunnel connection style and shore connection structural design, tunnel structure feasibility, construction and operation risks and the like. Whether the problems can be solved or not determines whether the suspension tunnel can be moved to actual engineering from a feasible scheme or not.
In the research on the floating tunnel, the proposed structural types can be roughly divided into three types according to the relationship between the self gravity of the floating tunnel and the received buoyancy: float type, anchor type, pier column type. The float-type suspension tunnel is formed by suspending the tunnel on a float bowl on the water surface through an anchor cable or an anchor chain, the gravity of the tunnel is greater than the buoyancy, and the vertical direction of the tunnel is greatly influenced by the fluctuation of the tide level; the anchoring type suspension tunnel is characterized in that the tunnel is anchored below a seabed on the basis of an anchorage 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; the pier column is actually a tunnel bridge supported on the underwater pier column, and the construction difficulty is high and the manufacturing cost is high. Because the tunnel floats in water, the tunnel installation construction is influenced by wind, waves, currents, ship traveling waves and the like, the underwater positioning, underwater or overwater butt joint construction difficulty of the three types of tunnels is very high, and the comfort level and the safety risk in the underwater operation period are difficult to predict.
The suspension tunnel is arranged under water with larger water depth, and if the tunnel is too long, the problems of ventilation and escape are difficult to solve. The longer the suspension tunnel is, the more difficult the stability control of the tunnel is, and the greater the construction difficulty and risk are. In order to provide better ventilation conditions for the super-long underwater tunnel, shorten an escape path, reduce the construction risk of the super-long suspended tunnel and be more beneficial to construction period control, operation period maintenance, part replacement and remote service area construction, the artificial island is a realistic choice for suspended tunnel relay extension. The purpose of the suspension tunnel using the relay artificial island as a transition shore base is as follows: firstly, the suspension tunnel relay is extended; secondly, the requirements of ventilation and escape of the underwater tunnel are met; thirdly, the requirement of self stability of the structure in the sea is met; fourthly, the problem that the installation of a too long suspension tunnel is difficult to control is solved; fifthly, the relay and control during multi-span simultaneous construction or multi-span continuous construction of the ultra-long suspension tunnel are realized, and sixthly, the requirement for establishing an intermediate service area of the ultra-long highway tunnel is met.
Because the suspension tunnel is positioned at sea, the influence of sea conditions on construction must be considered, and the pipe joint installation is relatively less influenced by the sea conditions by adopting a pushing process. However, when the pipe joint passes through the relay artificial island, continuous pushing cannot be performed due to the fact that the preorder suspension tunnel needs an anchorage, and subsequent pipe joint pushing of the extension section must be started again in the relay artificial island, so that the artificial island pipe joint connecting system which adopts the pushing process to install the suspension tunnel and has the pipe joint receiving and pipe joint pushing functions in the relay artificial island is particularly provided.
Disclosure of Invention
The invention aims to fill the blank of the prior art and provide an artificial island pipe joint connecting system for relay extension of a suspension tunnel, which can receive and pull pipe joints when pre-arranged pipe joints of the suspension tunnel are pushed and installed, and can connect and push subsequent pipe joints, so that the suspension tunnel can continuously extend forwards through a relay artificial island.
The purpose of the invention is realized as follows: a pipe joint connecting system of an artificial island for relay extension of a suspension tunnel comprises a land slope tunnel, a shore connection structure, an underwater suspension tunnel, a plurality of foundation force artificial islands and a guy cable anchorage system; the land slope tunnel comprises a pushing side land slope tunnel and a receiving side land slope tunnel; the shore connecting structures comprise pushing side shore structures and receiving side shore structures which are arranged on the pushing side coast and the receiving side coast in a one-to-one correspondence manner; the water-facing end of the pushing side land area slope tunnel and the water-facing end of the receiving side land area slope tunnel are connected with the back water end of the pushing side shore structure and the back water end of the receiving side shore structure in a one-to-one correspondence manner; the underwater suspension tunnel is formed by connecting a plurality of sections of pipe joints; the plurality of the artificial islands are arranged at intervals along the axial direction of the underwater suspended tunnel, so that the whole underwater suspended tunnel is divided into a plurality of cross-suspended tunnels; the plane part of each landing artificial island comprises an island inner part and an island outer part, and the vertical surface of each landing artificial island comprises an island base at the lower part and an upright island body at the upper part, wherein the upright island body consists of a cylindrical island wall and an island inner body; each binding force artificial island is provided with an artificial island pipe joint connecting system and an artificial island pipe joint supply system;
the artificial island pipe joint connecting system is arranged underground in the island of the relay artificial island and comprises an artificial island receiving side shore structure arranged opposite to a pushing side shore and an artificial island pushing side shore structure arranged opposite to the receiving side shore; wherein the content of the first and second substances,
the receiving side shore structure of the artificial island comprises a receiving section, a receiving side island wall section, a receiving side thrust section, an anchoring connection section and a traction anchorage section which are sequentially arranged from the sea area to the inside of the island, and a receiving side water pump room which is transversely arranged with the anchoring connection section;
the receiving section is a horizontal section from an upper island base to the outside of an island wall, the design elevation of the receiving section is the design bottom elevation of the section of the suspension tunnel, and a laying surface outside the suspension tunnel relay artificial island is formed;
the receiving side island wall section is a reserved hole of the island wall;
the receiving side thrust section is positioned at the front side of the receiving side island section and is positioned in a sealed box chamber between a receiving side thrust front sealed wall and a receiving side thrust rear sealed wall which are respectively provided with a wall hole, and the top of the sealed box chamber is provided with a manhole and an embedded cover plate; a hoop type thrust device is arranged in the receiving side thrust section; the receiving side thrust front sealing wall and the receiving side thrust rear sealing wall are respectively provided with a water stopping device along one circle of the wall hole, and a water stopping strip is arranged between the wall hole and the outer surface of the pipe joint;
the anchoring connection section is positioned at the front side of the receiving side thrust section and is provided with a pipe joint anchoring box capable of being opened and closed, and the length of the anchoring connection section is at least the length of one section of pipe joint;
the traction anchorage section is positioned at the front side of the anchoring connection section, and a traction device of a traction cable is arranged in the traction anchorage section;
the receiving side water pump room is connected with a water supply and drainage chamber of the pipe joint fixedly connected in the pipe joint anchoring box through a receiving side water delivery gallery;
the artificial island pushing side shore structure comprises a pushing section, a pipe section connecting section, a pushing side thrust section, a pushing side island wall section, a starting section and a pushing side water pump room, wherein the pushing section, the pipe section connecting section, the pushing side thrust section, the pushing side island wall section and the starting section are sequentially arranged from the inside of the island to the sea area;
the pushing side thrust section, the pushing side island wall section and the starting section are in one-to-one correspondence with the receiving side thrust section, the receiving side island wall section and the receiving section in structure;
the pipe joint connecting section and the pushing section are both positioned in a pipe joint connecting box which can be opened and closed;
the pipe joint connecting section is positioned at the rear side of the pushing side thrust section, namely, a position which is exposed at the rear side of the pushing side thrust rear sealing wall and is used for butting with a subsequent pipe joint is left after the pipe joint is pushed forwards, and the length of the pipe joint connecting section is the length of the left exposed pipe joint;
the pushing section is positioned at the rear side of the pipe joint connecting section, and the rear part of the pushing section is provided with a pushing trolley locating section; the middle parts of two side walls of the pipe joint connecting box are respectively provided with a bracket, and the two brackets are respectively provided with a pushing trolley track;
the pushing side water pump room and the receiving side water pump room are the same in structure and are symmetrically arranged, and the pushing side water pump room is connected with a water supply and drainage chamber of a pipe joint fixedly connected in the pipe joint connecting box through a pushing side water delivery gallery;
the outer surface of the head of the pipe joint entering the relay artificial island is solidified with the inner surface of the pipe joint anchoring box through pouring concrete; the outer surface of the tail part of the pipe joint left in the relay artificial island and the inner surface from the front part of the pushing section to the pipe joint connecting section are consolidated through pouring concrete;
the artificial island pipe joint supply system comprises a pipe joint horizontal steering section and a slope, wherein the pipe joint horizontal steering section is positioned between the traction anchorage section and the pushing section; the slope way is perpendicular to the axis of the tunnel, the lower port of the slope way is communicated with the pipe joint horizontal steering section, and the upper port of the slope way is positioned on the ground of the relay artificial island.
The artificial island pipe joint connecting system for suspending tunnel relay extension is characterized in that the top surface of the foundation bed of the receiving section is composed of a rock block foundation bed and a gravel cushion layer.
The artificial island pipe joint connecting system for suspending tunnel relay extension is characterized in that the inner diameter of the receiving side island wall section and the inner diameter of the pushing side island wall section are the outer diameter of the pipe joint, the diameter of the inhaul cable is multiplied by 2, and the allowance gap is 6-10 cm.
The artificial island pipe joint connecting system for suspending tunnel relay extension is characterized in that the length of the receiving side thrust section and the length of the pushing side thrust section are determined by the water pressure borne by the pipe joint and are 60-80 m.
The artificial island pipe joint connecting system for relay extension of the suspended tunnel is characterized in that the length of the pipe joint connecting section is 100-120 cm, a stepped pipe joint butt pit is arranged at the bottom of the pipe joint connecting section, the width of the pipe joint butt pit is 1m, and the depth of the pipe joint butt pit is 1.5 m.
The artificial island pipe joint connecting system for relay extension of the suspended tunnel is characterized in that the pipe joint anchoring box and the pipe joint connecting box are both rectangular water tank structures with top cover plates; the pipe joint anchoring box and the pipe joint connecting box are provided with pedestrian passages with the width of 60 cm-100 cm at two sides of the pipe joint respectively, and the clear height of 100 cm-120 cm is reserved at the bottom.
The artificial island pipe joint connecting system for suspending tunnel relay extension is characterized in that the pipe joint connecting box is provided with a pull ring on the wall body of the pipe joint connecting section, or an anchor machine is arranged at the rear end of the pushing section.
The artificial island pipe joint connecting system for relay extension of the suspended tunnel is characterized in that the length of the pushing section is the sum of the length of a pipe joint and the length of the pushing trolley locating section.
The artificial island pipe joint connecting system for suspending tunnel relay extension is characterized in that the water stopping device is a sealing hoop, and a rubber water stopping strip is arranged on the sealing hoop.
The artificial island pipe joint connecting system for suspending tunnel relay extension is characterized in that the plane of each power artificial island is in a shape of a gap circle or an ellipse; the island outer part comprises a material wharf, a breakwater and a harbor basin, and the gap is a harbor basin port door.
The artificial island pipe joint connecting system for suspending tunnel relay extension has the following characteristics:
1) the artificial island pipe joint connecting system realizes relay extension of the underwater suspension tunnel, greatly improves the length of the tunnel, and effectively solves the problems of ventilation, escape and the like of the super-long tunnel.
2) The pipe joint connecting system of the artificial island can receive and pull the pipe joint in the relay artificial island when the preorder pipe joint spanning push mounting of the suspension tunnel is carried out, and meanwhile, the subsequent pipe joint spanning connection and push are carried out in the relay artificial island, so that the ultra-long suspension tunnel can be constructed at multiple points simultaneously, and the construction period is greatly saved.
3) The relay artificial island pipe joint connecting system can be used as a transit station in the operating period of a suspension tunnel, and is wide in application range.
4) The artificial island pipe joint connecting system can adjust the floating weight ratio of the suspended tunnel in the construction period and the operation period.
Drawings
FIG. 1 is a plan view of a diagonal-pulling anchorage type suspension tunnel with relay extension of an artificial island;
FIG. 2 is a longitudinal section of a diagonal-pulling anchorage type suspension tunnel with relay extension of an artificial island;
FIG. 3 is a cross-sectional view of a diagonal-pulling anchorage type suspension tunnel with relay extension of an artificial island;
FIG. 4 is a plan view of the artificial island pipe joint connection system for suspended tunnel relay extension of the present invention;
FIG. 5 is a longitudinal cross-sectional view of the artificial island pipe joint connection system for suspended tunnel relay extension of the present invention;
fig. 6 is a longitudinal section of an artificial island receiving side shore structure in the artificial island pipe joint connection system of the present invention;
FIG. 7 is a longitudinal section of an artificial island pushing side shore structure in the artificial island pipe joint connection system of the present invention;
FIG. 8 is a longitudinal section of the connection structure of the artificial island pipe joint connection system of the present invention at the time of tunnel construction;
fig. 9 is a cross-sectional view of an anchor connection segment in the man-made island receiving side shore structure of the man-made island pipe section connection system of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 3, the artificial island pipe joint connection system for relay extension of a floating tunnel according to the present invention is suitable for a diagonal floating tunnel for relay extension of an artificial island, and includes a tunnel body, a shore connection structure, a plurality of seat-connection artificial islands 7, and a guy cable anchor system. The shore connecting structure comprises a pushing side shore structure 2 and a receiving side shore structure which are correspondingly arranged on a pushing side shore and a receiving side shore one by one; the tunnel body comprises an underwater suspension tunnel 1, a pushing side land slope tunnel 6 and a receiving side land slope tunnel; the water facing end of the pushing side land area slope tunnel 6 and the water facing end of the receiving side land area slope tunnel are connected with the back water end of the pushing side bank structure 2 and the back water end of the receiving side bank structure in a one-to-one correspondence mode. The underwater suspension tunnel 1 is formed by connecting a plurality of sections of pipe joints 10; the plurality of the artificial islands 7 are arranged at intervals along the axial direction of the underwater suspension tunnel 1, so that the whole underwater suspension tunnel 1 is divided into a plurality of cross-suspension tunnels; the cable anchorage system comprises a plurality of pairs of inclined cable anchorage artificial islands 4 and a plurality of inclined cables 3; and a plurality of pairs of stayed-cable anchorage artificial islands 4 are arranged at the midspan positions at two sides of each midspan suspended tunnel.
Referring to fig. 4 to 9, in view of construction difficulty, the relay artificial island 7 is preferably installed in a sea area with a water depth of 40 to 100 m. The plane of each artificial force island 7 is in a round or oval shape with a gap and comprises an island inner part and an island outer part, the island outer part comprises a material wharf 71, a breakwater 72 and a harbor pool 73, and the gap is a harbor pool port door; each vertical surface of the force-connecting artificial island 7 comprises an island base at the lower part and an upright island body at the upper part, and the upright island body consists of a cylindrical island wall and an island inner body.
The artificial island pipe joint connecting system provided by the invention has the functions of pipe joint receiving and pipe joint pushing, is arranged underground in the island part of the relay artificial island 7 and comprises an artificial island receiving side shore structure 7A arranged opposite to a pushing side shore and an artificial island pushing side shore structure 7B arranged opposite to the receiving side shore.
The receiving side shore structure 7A of the artificial island has functions of pushing, pulling and receiving pipe joints and comprises a receiving section 71a, a receiving side island wall section 72a, a receiving side thrust section 73a, an anchoring connection section 74a and a pulling anchor section 75a which are sequentially arranged from the sea area to the inside of the island, and a receiving side water pump room which is transversely arranged with the anchoring connection section 74 a.
The receiving section 71a is a horizontal section from an upper-layer island base to the outside of the cylindrical island wall, the design elevation of the receiving section 71a is the design bottom elevation of the section of the suspension tunnel, a placing surface outside the suspension tunnel relay artificial island 7 is formed, and conditions are created for achieving the purpose that the suspension tunnel never sinks; the top surface of the bed of the starting block receiving section 71a is formed by a gravel cushion and stones.
The receiving side island wall section 72a is a reserved hole of the island wall and is used for enabling the pipe joint 10 to enter the relay artificial island 7, the diameter of the hole is the outer diameter of the pipe joint +2 multiplied by the diameter of the stay cable + the allowance gap, and the allowance gap is 6-10 cm.
The receiving side thrust section 73a is positioned at the front side of the receiving side island wall section 72a and is positioned in a sealed box chamber between a receiving side thrust front sealing wall 731 and a receiving side thrust rear sealing wall 732 which are respectively provided with wall holes, and the top of the sealed box chamber is provided with a manhole and an embedded cover plate for maintenance; an anchor ear type thrust device 730 is arranged in the receiving side thrust section 73a, and thrust is performed by utilizing the friction force between the anchor ear type thrust device 730 and the pipe joint 10; in order to obtain better sealing effect and bear larger deep water pressure, a water stopping device 735 is arranged on the receiving-side anti-thrust front sealing wall 731 and the receiving-side anti-thrust rear sealing wall 732 respectively along the circumference of the wall hole, the water stopping device 735 is a sealing hoop, and a water stopping strip is arranged between the wall hole and the outer surface of the pipe joint 10; the length of the receiving-side thrust segment 73a is determined by the water pressure to which the pipe joint 10 is subjected, and is generally 60m to 80 m.
An anchor connecting section 74a is located on the front side of the receiving-side thrust section 73a, the anchor connecting section 74a is provided with an openable and closable pipe joint anchor box 76, and the length of the anchor connecting section 74a is at least the length of one pipe joint 10; the pipe joint anchoring box 76 reserves pedestrian passages with the width of 60 cm-100 cm at two sides of the pipe joint 10 respectively, and reserves the net height of 100 cm-120 cm at the bottom; a high-power pumping device is arranged in the pipe joint anchoring box 76; after the pipe joint 10 is pushed to enter the anchoring connection section 74a, the water stopping device 735 on the receiving side anti-thrust front sealing wall 731, the water stopping device 735 on the receiving side anti-thrust rear sealing wall 732 and the anchor ear type anti-thrust device 730 in the receiving side anti-thrust section 73a are opened, the pipe joint anchoring box 76 is pumped to form a dry construction environment, and concrete on the outer surface of the head of the pipe joint 10 in the pipe joint anchoring box 76 is poured to form consolidation with a receiving side bank structure of the artificial island. The water stopping device 735 on the receiving-side thrust front sealing wall 731 and the water stopping device 735 on the receiving-side thrust rear sealing wall 732 are used for temporarily stopping water when the dry-wet environment is converted after the pipe joint 10 is pushed into the anchoring connection section 74 a.
The traction anchorage section 75a is positioned at the front side of the anchoring connection section 74a, the bottom of the traction anchorage section 75a is provided with a reinforced concrete abutment, a pile foundation is arranged below the abutment, and the abutment is provided with a high-power traction cable traction device 750; the pipe joint 10 is pushed to the right position and solidified, and then the traction device 750 and the abutment are removed.
A water storage chamber 91, a water supply and drainage system gate valve chamber 92 and a water pump room control system 93 are arranged in the receiving side water pump room; the water storage chamber 91 in the receiving side water pump room is connected with the water supply and drainage chamber 13 of the pipe joint fixedly connected in the pipe joint anchoring box 76 through the receiving side water delivery gallery 90; and the receiving side water pump room is used as a part of a floating weight ratio adjusting system and is used for floating tunnel drainage and floating weight ratio adjustment of the tunnel.
The artificial island pushing side shore structure 7B has the functions of dry butt joint and wet pushing of pipe joints and comprises a pushing section 75B, a pipe joint connecting section 74B, a pushing side thrust section 73B, a pushing side island wall section 72B and a starting section 71B which are sequentially arranged from the inside of the island to the sea area, and a pushing side water pump room which is transversely arranged with the pipe joint connecting section 74B.
The pushing-side thrust section 73b, the pushing-side island wall section 72b and the starting section 71b are in one-to-one correspondence with the receiving-side thrust section 73a, the receiving-side island wall section 72a and the receiving section 71a in structure; the pushing side island wall section 72b is used for pushing the pipe joint out of the relay artificial island 7; the length of the pushing side thrust section 73b is determined by the water pressure applied to the pipe joint, and is generally 60m to 80 m. The pushing side anti-thrust section 73b is positioned in a sealed box chamber between a pushing side anti-thrust front sealing wall 733 and a pushing side anti-thrust rear sealing wall 734 which are respectively provided with wall holes, an anchor ear type anti-thrust device 730 is arranged in the sealed box chamber, and the anti-thrust is realized by utilizing the friction force between the anchor ear type anti-thrust device 730 and the pipe joint 10; a water stopping device 735 is arranged on each of the pushing side thrust front sealing wall 733 and the pushing side thrust rear sealing wall 734 along one circle of the wall hole, the water stopping device 735 is a sealing hoop, and a water stopping strip is arranged between the wall hole and the outer surface of the pipe joint 10.
Since all the pipe joints 10 of the underwater suspension tunnel 1 are constructed in a dry environment, the pipe joint connection section 74b and the pushing section 75b are both disposed in the pipe joint connection box 77 that can be opened and closed in order to form a dry-wet conversion environment.
The pipe joint connecting section 74b is located on the rear side of the pushing side sealing section, namely, a position which is exposed on the rear side of the pushing side thrust rear sealing wall 734 and is used for being in butt joint with a subsequent pipe joint is left after the pipe joint is pushed forwards, the length of the pipe joint connecting section 74b is the length of the pipe joint left exposed, in order to facilitate butt joint and fastening operations, the length of the pipe joint connecting section 74b is 100 cm-120 cm, a stepped pipe joint butt joint pit 740 is arranged at the bottom of the pipe joint connecting section 74b and is used for an operator to stand, the width of the pipe joint butt joint pit 740 is 1m, and the depth of the pipe joint butt joint pit is 1.5 m.
The pushing section 75b is positioned at the rear side of the pipe joint connecting section 74b and is used for connecting, tensioning and pushing the pipe joint 10; the bottom of the pushing section 75b is provided with a carrying air bag; the rear part of the pushing section 75b is provided with a pushing trolley locating section; the length of the pushing section 75b is the sum of the length of the pipe joint 10 and the length of the pushing trolley locating section; the middle parts of two side walls of the pipe joint connecting box 77 are respectively provided with a bracket, two pushing trolley rails are respectively arranged on the two brackets and used for pushing the trolley 78 to move forwards, and thrust blocks are arranged at the butt joint positions of the pipe joints on the two brackets of the pipe joint connecting box 77 and used for limiting the pushing trolley 78.
The pipe joint connecting box 77 can be designed into a rectangular water tank type with a top cover, wherein pedestrian passages with the width of 60 cm-100 cm are reserved on two sides of the pipe joint 10 of the pipe joint connecting box 77, and the clear height of 100 cm-120 cm is reserved at the bottom of the pipe joint connecting box; a high-power water pumping device is arranged in the pipe joint connecting box 77, and after the pipe joint 10 is pushed, the pipe joint connecting box 77 is pushed to pump water through thrust and sealing, so that a dry environment is formed. In order to facilitate the butt joint and tensioning of the pipe joint 10, a pull ring is arranged on the wall body of the pipe joint connecting section 74b of the pipe joint connecting box 77, or an anchor machine is arranged at the rear end of the pushing section 75b for butt joint and initial tensioning of the pipe joint 10.
The pushing side water pump room and the receiving side water pump room are the same in structure and are symmetrically arranged, and a water storage chamber in the pushing side water pump room is connected with a water supply and drainage chamber 13 of a pipe joint fixedly connected in a pipe joint connecting box 77 through a pushing side water delivery gallery (see fig. 9). The pushing side water pump room is also used as a part of a floating weight ratio adjusting system and is used for water drainage of the suspension tunnel and floating weight ratio adjustment of the tunnel.
The outer surface of the head of the pipe joint 10 entering the relay artificial island 7 is solidified with the inner surface of the anchoring box through pouring concrete; the outer surface of the tail part of the pipe joint 10 left in the relay artificial island 7 and the inner surface from the front part of the pushing section 75b to the pipe joint connecting section 74b are consolidated through pouring concrete;
the artificial island pipe joint supply system comprises a pipe joint horizontal steering section 74 and a slope way 75; wherein, the pipe joint horizontal steering section 74 is positioned between the pulling anchorage section 75a and the pushing section 75 b; the slope way 75 is arranged perpendicular to the axis of the tunnel, the lower port of the slope way is communicated with the pipe joint horizontal steering section 74, and the upper port of the slope way is positioned on the ground of the relay artificial island 7.
For a suspension tunnel adopting a pushing process to install tunnel pipe joints, when the pipe joints pass through a relay artificial island, continuous pushing cannot be performed due to the fact that an anchor is needed in a preorder tunnel, pushing of the pipe joints of a subsequent extension section must be started again in the relay artificial island, the pipe joints are difficult to be directly conveyed into the relay artificial island from a preoperative land segment land area prefabrication plant, and other pipe joint supply modes must be adopted. The method can adopt two modes of self-supply in the artificial island and supply outside the island, and in any supply mode, the pipe joints are conveyed into a dry environment of a pipe joint connecting system from the direction vertical to the axis of the tunnel, so that the artificial island pipe joint connecting system in the relay artificial island 7 must be matched with the artificial island pipe joint supplying system, and the overall arrangement of the relay artificial island must also consider the artificial island pipe joint connecting system and the artificial island pipe joint supplying system. Because the pipe joint supply is in the vertical direction, a pipe joint horizontal steering section 74 needs to be arranged behind an initial end of the artificial island pipe joint connecting system, a slope bottom steering platform 79 is arranged in the pipe joint horizontal steering section 74 to realize steering of the pipe joint 10, the pipe joint 10 is located on the axis of the tunnel, and secondary outfitting is carried out. After a pipe joint to be pushed is driven to a pushing trolley locating section at the rear part of a pushing section 75b from a slope bottom steering platform 79 of a pipe joint horizontal steering section 74 by a transport flat car, a jacking beam driven by a jack is arranged at the bottom of the pushing trolley locating section, and after the jacking beam jacks a section of pipe joint to be pushed, the transport flat car is withdrawn for secondary fitting-out; after the second outfitting is completed, a carrying air bag penetrates between the lower part of the pipe joint 10 to be pushed and the jacking beam, the pipe joint 10 to be pushed is moved to the front part of the pushing section 75b after the carrying air bag is inflated, then an operator carries out butt joint on the pipe joint 10 to be pushed and the tail part of the pipe joint left in the pipe joint connecting section 74b by pushing the previous section in a butt joint pit 740 of the pipe joint connecting section 74b, and the pushing trolley 78 is in place after the butt joint is completed to push the pipe joint 10 forwards.
An air shaft and a channel are further arranged on the relay artificial island 7 so as to meet the requirements of ventilation and escape of the underwater tunnel.
The artificial island pipe joint connecting system is designed and arranged according to the stress characteristics of the suspension tunnel in the construction period and the service period and the overall construction process requirement of the suspension tunnel. Because the suspended tunnel is buried deeply, the depth of the artificial island pipe joint connecting system is required to be deep, the lower part of the artificial island pipe joint connecting system is generally used for arranging a tunnel structure and a tunnel auxiliary facility application room, and the upper part of the artificial island pipe joint connecting system can be used for parking lots and other purposes.
The artificial island pipe joint connecting system is of an underground reinforced concrete structure, and a pile foundation is arranged below a foundation so as to increase vertical and horizontal bearing capacity. The construction of the artificial island pipe joint connecting system adopts an in-island cast-in-place process, and the construction must be carried out after the foundation treatment of the relay artificial island and the relative stable consolidation and settlement. For the convenience of the construction of the structure in the island, the backfill elevation in the island is determined according to the balance between the active soil pressure in the island wall and the water pressure outside the vertical island wall. Firstly, a mixing building is constructed so as to provide concrete for the construction of the reinforced concrete structure in the island. The artificial island pipe joint connecting system belongs to deep foundation pit engineering, and adopts a cast-in-place process after excavation of a foundation pit in a building enclosure. Because the relay artificial island is filled with backfill sand, the enclosure structure is preferably provided with a steel pipe lock pile or a cast-in-place pile row pile and a stirring (or high-pressure jet grouting pile) pile waterproof curtain.
The pipe joint pushing construction method corresponding to the artificial island pipe joint connecting system is dry connection and wet pushing. And the pipe joint pushing construction is carried out after the construction of the structure in the relay artificial island is finished.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (10)
1. A pipe joint connecting system of an artificial island for relay extension of a suspension tunnel comprises a land slope tunnel, a shore connection structure, an underwater suspension tunnel, a plurality of foundation force artificial islands and a guy cable anchorage system; the land slope tunnel comprises a pushing side land slope tunnel and a receiving side land slope tunnel; the shore connecting structures comprise pushing side shore structures and receiving side shore structures which are arranged on the pushing side coast and the receiving side coast in a one-to-one correspondence manner; the water-facing end of the pushing side land area slope tunnel and the water-facing end of the receiving side land area slope tunnel are connected with the back water end of the pushing side shore structure and the back water end of the receiving side shore structure in a one-to-one correspondence manner; the underwater suspension tunnel is formed by connecting a plurality of sections of pipe joints; the plurality of the artificial islands are arranged at intervals along the axial direction of the underwater suspended tunnel, so that the whole underwater suspended tunnel is divided into a plurality of cross-suspended tunnels; the plane part of each landing artificial island comprises an island inner part and an island outer part, and the vertical surface of each landing artificial island comprises an island base at the lower part and an upright island body at the upper part, wherein the upright island body consists of a cylindrical island wall and an island inner body; each binding force artificial island is provided with an artificial island pipe joint connecting system and an artificial island pipe joint supply system; it is characterized in that the preparation method is characterized in that,
the artificial island pipe joint connecting system is arranged underground in the island of the relay artificial island and comprises an artificial island receiving side shore structure arranged opposite to a pushing side shore and an artificial island pushing side shore structure arranged opposite to the receiving side shore; wherein the content of the first and second substances,
the receiving side shore structure of the artificial island comprises a receiving section, a receiving side island wall section, a receiving side thrust section, an anchoring connection section and a traction anchorage section which are sequentially arranged from the sea area to the inside of the island, and a receiving side water pump room which is transversely arranged with the anchoring connection section;
the receiving section is a horizontal section from an upper island base to the outside of an island wall, the design elevation of the receiving section is the design bottom elevation of the section of the suspension tunnel, and a laying surface outside the suspension tunnel relay artificial island is formed;
the receiving side island wall section is a reserved hole of the island wall;
the receiving side thrust section is positioned at the front side of the receiving side island section and is positioned in a sealed box chamber between a receiving side thrust front sealed wall and a receiving side thrust rear sealed wall which are respectively provided with a wall hole, and the top of the sealed box chamber is provided with a manhole and an embedded cover plate; a hoop type thrust device is arranged in the receiving side thrust section; the receiving side thrust front sealing wall and the receiving side thrust rear sealing wall are respectively provided with a water stopping device along one circle of the wall hole, and a water stopping strip is arranged between the wall hole and the outer surface of the pipe joint;
the anchoring connection section is positioned at the front side of the receiving side thrust section and is provided with a pipe joint anchoring box capable of being opened and closed, and the length of the anchoring connection section is at least the length of one section of pipe joint;
the traction anchorage section is positioned at the front side of the anchoring connection section, and a traction device of a traction cable is arranged in the traction anchorage section;
the receiving side water pump room is connected with a water supply and drainage chamber of the pipe joint fixedly connected in the pipe joint anchoring box through a receiving side water delivery gallery;
the artificial island pushing side shore structure comprises a pushing section, a pipe section connecting section, a pushing side thrust section, a pushing side island wall section, a starting section and a pushing side water pump room, wherein the pushing section, the pipe section connecting section, the pushing side thrust section, the pushing side island wall section and the starting section are sequentially arranged from the inside of the island to the sea area;
the pushing side thrust section, the pushing side island wall section and the starting section are in one-to-one correspondence with the receiving side thrust section, the receiving side island wall section and the receiving section in structure;
the pipe joint connecting section and the pushing section are both positioned in a pipe joint connecting box which can be opened and closed;
the pipe joint connecting section is positioned at the rear side of the pushing side thrust section, namely, a position which is exposed at the rear side of the pushing side thrust rear sealing wall and is used for butting with a subsequent pipe joint is left after the pipe joint is pushed forwards, and the length of the pipe joint connecting section is the length of the left exposed pipe joint;
the pushing section is positioned at the rear side of the pipe joint connecting section, and the rear part of the pushing section is provided with a pushing trolley locating section; the middle parts of two side walls of the pipe joint connecting box are respectively provided with a bracket, and the two brackets are respectively provided with a pushing trolley track;
the pushing side water pump room and the receiving side water pump room are the same in structure and are symmetrically arranged, and the pushing side water pump room is connected with a water supply and drainage chamber of a pipe joint fixedly connected in the pipe joint connecting box through a pushing side water delivery gallery;
the outer surface of the head of the pipe joint entering the relay artificial island is solidified with the inner surface of the pipe joint anchoring box through pouring concrete; the outer surface of the tail part of the pipe joint left in the relay artificial island and the inner surface from the front part of the pushing section to the pipe joint connecting section are consolidated through pouring concrete;
the artificial island pipe joint supply system comprises a pipe joint horizontal steering section and a slope, wherein the pipe joint horizontal steering section is positioned between the traction anchorage section and the pushing section; the slope way is perpendicular to the axis of the tunnel, the lower port of the slope way is communicated with the pipe joint horizontal steering section, and the upper port of the slope way is positioned on the ground of the relay artificial island.
2. The artificial island pipe joint connection system for suspended tunnel relay extension of claim 1, wherein the top surface of the bed of the receiving section is comprised of a bed of rock blocks and a bed of crushed stone.
3. The artificial island pipe joint connecting system for suspending tunnel relay extension according to claim 1, wherein the inner diameter of the receiving side island wall section and the inner diameter of the pushing side island wall section are the outer diameter of the pipe joint +2 x the diameter of the stay rope + a clearance, and the clearance is 6-10 cm.
4. The artificial island pipe joint connecting system for suspending tunnel relay extension according to claim 1, wherein the length of the receiving side thrust section and the length of the pushing side thrust section are determined by the water pressure applied to the pipe joint and are 60-80 m.
5. The artificial island pipe joint connecting system for suspending tunnel relay extension according to claim 1, wherein the length of the pipe joint connecting section is 100-120 cm, a stepped pipe joint butt pit is arranged at the bottom of the pipe joint connecting section, the width of the pipe joint butt pit is 1m, and the depth of the pipe joint butt pit is 1.5 m.
6. The artificial island pipe joint connection system for suspending tunnel relay extension according to claim 1, wherein the pipe joint anchoring box and the pipe joint connection box are both rectangular water tank structures with top cover plates; the pipe joint anchoring box and the pipe joint connecting box are provided with pedestrian passages with the width of 60 cm-100 cm at two sides of the pipe joint respectively, and the clear height of 100 cm-120 cm is reserved at the bottom.
7. The artificial island pipe joint connection system for suspending tunnel relay extension according to claim 1 or 6, wherein the pipe joint connection box is provided with a pull ring on the wall of the pipe joint connection section, or an anchor machine is arranged at the rear end of the pushing section.
8. The artificial island pipe joint connection system for suspending tunnel relay extension according to claim 1, wherein the length of the pushing section is the sum of the length of a pipe joint and the length of the pushing trolley location section.
9. The artificial island pipe joint connecting system for suspending tunnel relay extension according to claim 1, wherein the water stopping device is a sealing hoop, and a rubber water stopping strip is mounted on the sealing hoop.
10. The artificial island pipe joint connection system for suspending tunnel relay extension according to claim 1, wherein the plane of each power artificial island is in a shape of a gap circle or ellipse; the island outer part comprises a material wharf, a breakwater and a harbor basin, and the gap is a harbor basin port door.
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| CN202010244335.3A CN111424715B (en) | 2020-03-31 | 2020-03-31 | Artificial island pipe joint connecting system for relay extension of suspended tunnel |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130115923A (en) * | 2012-04-13 | 2013-10-22 | 한국철도기술연구원 | Submerged floating tunnel system |
| CN106337439A (en) * | 2015-07-31 | 2017-01-18 | 合肥工业大学 | Method for achieving underwater butt joint of submerged floating tunnel through butt joint device |
| CN108385728A (en) * | 2018-05-10 | 2018-08-10 | 中交第航务工程局有限公司 | Immersed tube tunnel push mode FS final spice and its docking construction method |
| CN109594587A (en) * | 2018-12-14 | 2019-04-09 | 黄夏羿 | Submerged floating tunnel structure, construction and its control method in water over strait |
| CN109653248A (en) * | 2018-11-07 | 2019-04-19 | 浙江大学 | It is a kind of for anchoring the adjustable anchor cable device of submerged floating tunnel tube body |
| CN110409509A (en) * | 2019-07-12 | 2019-11-05 | 大连理工大学 | A kind of seabed submerged floating tunnel and subterranean tunnel connection construction device and its construction method |
| CN110725336A (en) * | 2019-11-19 | 2020-01-24 | 中国交通建设股份有限公司 | Suspension tunnel shore connection system, suspension tunnel and suspension tunnel construction method |
-
2020
- 2020-03-31 CN CN202010244335.3A patent/CN111424715B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130115923A (en) * | 2012-04-13 | 2013-10-22 | 한국철도기술연구원 | Submerged floating tunnel system |
| CN106337439A (en) * | 2015-07-31 | 2017-01-18 | 合肥工业大学 | Method for achieving underwater butt joint of submerged floating tunnel through butt joint device |
| CN108385728A (en) * | 2018-05-10 | 2018-08-10 | 中交第航务工程局有限公司 | Immersed tube tunnel push mode FS final spice and its docking construction method |
| CN109653248A (en) * | 2018-11-07 | 2019-04-19 | 浙江大学 | It is a kind of for anchoring the adjustable anchor cable device of submerged floating tunnel tube body |
| CN109594587A (en) * | 2018-12-14 | 2019-04-09 | 黄夏羿 | Submerged floating tunnel structure, construction and its control method in water over strait |
| CN110409509A (en) * | 2019-07-12 | 2019-11-05 | 大连理工大学 | A kind of seabed submerged floating tunnel and subterranean tunnel connection construction device and its construction method |
| CN110725336A (en) * | 2019-11-19 | 2020-01-24 | 中国交通建设股份有限公司 | Suspension tunnel shore connection system, suspension tunnel and suspension tunnel construction method |
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