CN110042867B - Full-composite assembled subway station prefabricated part mechanized transportation system and method - Google Patents
Full-composite assembled subway station prefabricated part mechanized transportation system and method Download PDFInfo
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- CN110042867B CN110042867B CN201910356762.8A CN201910356762A CN110042867B CN 110042867 B CN110042867 B CN 110042867B CN 201910356762 A CN201910356762 A CN 201910356762A CN 110042867 B CN110042867 B CN 110042867B
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- 239000002131 composite material Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims description 28
- 238000010276 construction Methods 0.000 claims abstract description 29
- 238000009417 prefabrication Methods 0.000 claims abstract description 10
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000011065 in-situ storage Methods 0.000 claims description 44
- 238000009434 installation Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 27
- 239000010959 steel Substances 0.000 description 27
- 239000004567 concrete Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 239000004035 construction material Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a full-composite assembled subway station prefabricated member mechanized transportation system, which is characterized in that: a plurality of embedded tracks extending longitudinally along the subway station are prefabricated below the prefabricated top plate (9) and the prefabricated middle plate (16) and are used for hoisting the electric hoist; the embedded track under each plate is in butt joint connection with the embedded track under the adjacent plate to form a whole, and the electric hoist is used for longitudinally and slidably hoisting the prefabricated part along the whole embedded track; the electric hoist of prefabricated roof (9) is used for handling and installs longeron (15) and prefabricated medium plate (16) in the prefabrication of next floor, and the electric hoist of prefabricated medium plate (16) of upper strata is used for handling and installs longeron (15) and prefabricated medium plate (16) or the prefabricated bed course (23) of next floor bottom plate in the prefabrication of next floor. The invention realizes the full-mechanized transportation and assembly of prefabricated parts below the top plate of the full-composite assembled subway station, saves investment and construction period, and realizes sustainable development and green construction.
Description
Technical Field
The invention belongs to the field of underground engineering of subway stations, and particularly relates to a full-composite assembled subway station prefabricated member mechanized transportation system.
Background
The existing underground structural engineering such as subway station structure has two structural forms, namely an assembled underground structure and a full open cut cast-in-situ underground structure, but has respective defects. In order to overcome the problems, a fully composite assembled subway station structure is developed.
However, the following problems exist in the construction process of the fully-composite assembled subway station:
(1) In the construction process, the fully-composite assembled subway station is firstly hoisted to finish a station roof longitudinal beam and a roof, prefabricated components below the roof are hoisted into the station from a working well, and can reach a designated position after a series of horizontal and vertical movements are carried out, so that assembly is finished, and no mature technology exists at present. The fully-composite assembled underground station also relates to a large number of post-cast reinforced concrete structures, and certain difficulties exist in transporting materials such as reinforcing steel bars and the like.
(2) According to calculation, the weight of the single prefabricated middle plate exceeds 10t, the weight of the single span middle longitudinal beam reaches 25t, the internal space of the station is narrow, and the horizontal transportation and assembly of the prefabricated member are difficult to realize by the existing mechanical trolley. The novel mechanical trolley has long period and high cost.
(3) The mechanical equipment is adopted for transporting and assembling the prefabricated parts, the requirement on the ground flatness is high, the prefabricated parts caused by uneven ground collide with the existing parts to be damaged greatly, and the use of the mechanical trolley is limited.
(4) At present, the hanging of the upper square pipe of the subway station and the air duct at the rail top are mostly solved by adopting the modes of driving expansion bolts and planting bars, so that the structure is damaged to a certain extent, and the long-term reliability in hundred-year engineering is difficult to ensure.
In summary, the key technologies to be solved by the fully-composite assembled subway station include:
(1) The fully-composite assembled underground station comprises a prefabricated middle plate, a prefabricated middle longitudinal beam and a prefabricated cushion layer which are horizontally transported and assembled;
(2) Transporting the cast-in-situ structural material of the fully-assembled underground station;
(3) And (3) the construction of a fully-composite assembled underground station pipeline system suspension and a rail top air duct.
Disclosure of Invention
Aiming at least one of the defects or the improvement demands of the prior art, the invention provides a fully-composite assembled subway station prefabricated component mechanized transportation system, wherein a track is reserved on a precast concrete slab, walking electric hoists are arranged on the track, and hoisting and splicing of a fully-composite assembled subway station precast middle plate, a precast middle longitudinal beam, a precast cushion layer, a reinforcing steel bar and the like are realized through horizontal and vertical movements of different electric hoists.
To achieve the above object, according to one aspect of the present invention, there is provided a mechanized transportation system for prefabricated parts of a fully composite assembled subway station, wherein:
a plurality of embedded rails extending longitudinally along the subway station are prefabricated below the prefabricated top plate and the prefabricated middle plate and are used for hoisting the electric hoist; the embedded track under each plate is in butt joint connection with the embedded track under the adjacent plate to form a whole, and the electric hoist is used for longitudinally and slidably hoisting the prefabricated part along the whole embedded track;
the electric hoist of prefabricated roof is arranged in the prefabrication of handling installation next floor longeron and prefabricated medium plate, and the electric hoist of the prefabricated medium plate of upper strata is arranged in the prefabrication of handling installation next floor longeron and prefabricated medium plate or the prefabricated bed course of next floor bottom plate.
Preferably, the pre-buried track of the prefabricated top plate is also used for installing the prefabricated pipeline bracket after the electric hoist is dismantled;
the pre-buried track of prefabricated medium plate is still used for installing prefabricated rail roof wind channel and prefabricated pipeline support after demolishing electric block.
Preferably, an embedded track a and an embedded track b are arranged below a prefabricated top plate on one side of each upright post on the transverse sides of the subway station, an electric hoist a and an electric hoist i are sequentially arranged on the integral embedded track where the embedded track a is located, and an electric hoist b and an electric hoist j are sequentially arranged on the integral embedded track where the embedded track b is located;
an embedded track c and an embedded track d are arranged under the prefabricated top plate at the other side, an electric hoist c and an electric hoist k are sequentially arranged on the integral embedded track where the embedded track c is located, and only one electric hoist d is arranged on the integral embedded track where the embedded track d is located.
Preferably, an embedded track e and an embedded track f are arranged below the prefabricated middle plate on one side of each upright post of the subway station, only one electric hoist e is arranged on the integral embedded track where the embedded track e is located, and only one electric hoist f is arranged on the integral embedded track where the embedded track f is located;
an embedded track g and an embedded track h are arranged under the prefabricated middle plate at the other side, only one electric hoist g is arranged on the integral embedded track where the embedded track g is located, and only one electric hoist h is arranged on the integral embedded track where the embedded track h is located.
Preferably, a sling is connected between the electric hoist a and the electric hoist b and used for lifting and mounting a prefabricated middle longitudinal beam of the next layer, one end of the prefabricated middle longitudinal beam is supported by the sling, and the sling is connected between the electric hoist i and the electric hoist j and used for lifting and mounting the prefabricated middle longitudinal beam of the next layer, and the other end of the prefabricated middle longitudinal beam is supported by the sling;
the lower ends of the electric hoist c and the electric hoist k are respectively provided with traction ropes which are respectively and releasably connected to two ends of the supported prefabricated middle longitudinal beam and used for traction to the longitudinal beam installation position of the upright post.
Preferably, slings are respectively arranged at the lower ends of the electric hoist a and the electric hoist b and are used for hoisting and mounting a prefabricated middle plate of the next layer; one end of the prefabricated middle plate is positioned in a hanging ring formed by one hanging rope in a releasable manner, and the other end of the prefabricated middle plate is positioned in a hanging ring formed by the other hanging rope in a releasable manner;
one of the electric hoist c and the electric hoist k forms a pair with the electric hoist d, and slings are respectively arranged at the lower ends of the electric hoist c and the electric hoist k and are used for hoisting and mounting a prefabricated middle plate of the next layer; one end of the prefabricated middle plate is positioned in a hanging ring formed by one hanging rope in a releasable mode, and the other end of the prefabricated middle plate is positioned in a hanging ring formed by the other hanging rope in a releasable mode.
Preferably, slings are respectively arranged at the lower ends of the electric hoist e and the electric hoist f and are used for hoisting and mounting a prefabricated middle plate or a prefabricated cushion layer of the next layer; one end of the prefabricated middle plate or the prefabricated cushion layer is positioned in a hanging ring formed by one hanging rope in a releasable mode, and the other end of the prefabricated middle plate or the prefabricated cushion layer is positioned in a hanging ring formed by the other hanging rope in a releasable mode;
slings are respectively arranged at the lower ends of the electric hoist g and the electric hoist h and are used for hoisting and mounting a prefabricated middle plate or a prefabricated cushion layer of the next layer; one end of the prefabricated middle plate or the prefabricated cushion layer is positioned in a hanging ring formed by one hanging rope in a releasable mode, and the other end of the prefabricated middle plate or the prefabricated cushion layer is positioned in a hanging ring formed by the other hanging rope in a releasable mode.
In order to achieve the above object, according to another aspect of the present invention, there is also provided a transportation method of a mechanized transportation system for prefabricated components of a fully composite assembled subway station as described above, wherein the steps of the mechanized transportation method for prefabricated middle stringers include:
s1, respectively installing an electric hoist a, an electric hoist i, an electric hoist b, an electric hoist j, an electric hoist c, an electric hoist k and an electric hoist d on an embedded track a, an embedded track b, an embedded track c and an embedded track d;
s2, connecting a sling between the electric hoist a and the electric hoist b, and connecting a sling between the electric hoist i and the electric hoist j; firstly, placing the front end of a prefabricated middle longitudinal beam on a sling connected between an electric hoist a and an electric hoist b by utilizing an external crane, synchronously moving the two electric hoists and the external crane forwards, and then placing the rear end of the prefabricated middle longitudinal beam on the sling connected between the electric hoist i and the electric hoist j;
s3, synchronously moving the four electric hoists longitudinally, and longitudinally conveying the prefabricated middle longitudinal beam to a preset installation position along the station;
s4, simultaneously lowering the electric hoist b and the electric hoist j to enable the prefabricated middle longitudinal beam to droop and gradually deviate to the upright post side;
s5, moving the electric hoist c and the electric hoist k to opposite sides of the prefabricated middle longitudinal beam, and connecting traction ropes with the prefabricated middle longitudinal beam respectively;
s6, synchronously pulling the electric hoist c and the electric hoist k, and pulling the prefabricated middle longitudinal beam to the upright post side; and continuously lowering the prefabricated middle longitudinal beam to the installation position to finish the installation of the prefabricated middle longitudinal beam.
In order to achieve the above object, according to another aspect of the present invention, there is also provided a transportation method of the mechanized transportation system for prefabricated members of a fully composite assembled subway station as described above, wherein the steps of the mechanized transportation method for prefabricated middle plates include:
s1, hanging a prefabricated middle plate from a working well by using an external crane, and respectively hanging two ends of the prefabricated middle plate in hanging rings formed by slings of an electric hoist a and an electric hoist b;
s2, synchronously longitudinally moving the electric hoist a and the electric hoist b, and longitudinally conveying the prefabricated middle plate to the position above the installation position along the station;
s3, simultaneously lowering the electric hoist a and the electric hoist b, adjusting the position of the prefabricated middle plate, splicing the prefabricated middle plate in clamping grooves of the underground diaphragm wall and the prefabricated middle longitudinal beam, and completing splicing;
s4, assembling the prefabricated middle plate at the other side of the upright post by any one of the electric hoist c and the electric hoist k and the electric hoist d according to the method of S1-3S;
s5, constructing a middle plate cast-in-situ layer and an underground one-layer side wall cast-in-situ layer, and reserving a lifting hole for the next layer, thereby completing the composite assembly of the middle plate layer.
In order to achieve the above object, according to another aspect of the present invention, there is also provided a transportation method of the mechanized transportation system for prefabricated members of a fully composite assembled subway station as described above, wherein the steps of the mechanized transportation method for the prefabricated bedding middle plate include:
s1, when the compound assembly of the middle plate layer of the upper layer is completed, the embedded track e, the embedded track f, the embedded track g and the embedded track h are embedded in the prefabricated middle plate in a prefabrication factory, and the longitudinal connection is completed when the prefabricated middle plate is assembled;
s2, respectively mounting an electric hoist e, an electric hoist f, an electric hoist g and an electric hoist h on the embedded track e, the embedded track f, the embedded track g and the embedded track h;
s3, hanging the prefabricated cushion layer from the working well by using an external crane, and respectively hanging two ends of the prefabricated cushion layer in hanging rings formed by slings of the electric hoist e and the electric hoist f;
s4, synchronously operating the electric hoist e and the electric hoist f, and longitudinally conveying the prefabricated cushion layer to the position above the installation position along the station;
s5, simultaneously lowering the electric hoist e and the electric hoist f, and completing the assembly of the prefabricated cushion layer by utilizing manual or mechanical proper adjustment;
s6, assembling the prefabricated cushion layer on the other side of the electric hoist g and the electric hoist h of the other prefabricated middle plate on the other side of the upright post according to the method of S1-S5;
s7, constructing a cast-in-situ bottom plate and an underground two-layer side wall cast-in-situ layer, removing all electric hoists of the middle plate on the upper side, and sealing the hoisting holes to finish construction.
The above-described preferred technical features may be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
1. the full-composite assembled subway station prefabricated part mechanized transportation system realizes full-mechanized transportation and assembly of prefabricated parts below a top plate of the full-composite assembled subway station, promotes implementation of the full-composite assembled subway station, saves a great amount of cost compared with development of a special trolley, saves investment and construction period, is environment-friendly, saves energy, protects environment, has advanced technology, and realizes sustainable development and environment-friendly construction.
2. The full-composite assembled subway station prefabricated member mechanized transportation system can also provide material transportation of reinforcing steel bars and the like of cast-in-place parts of the full-composite assembled subway station, and saves a large amount of manpower and material resources.
3. The fully-combined assembled type mechanical transportation system for the prefabricated components of the subway station can be used for recycling and recovering the electric hoist, for example, after the electric hoist on the underground first layer is used, the system can be applied to the underground second layer, and no temporary equipment waste exists.
4. According to the fully-composite assembled subway station prefabricated member mechanized transportation system, the pre-buried track hanging bracket and the pipeline are utilized to construct the rail top air duct, so that the traditional method of expanding bolt and bar planting is replaced, the durability and quality are improved, and the problem of anchor bolt fixing in the traditional manner is effectively solved; the track pre-buried in the roof can be matched with the roof upper side pipeline, the track pre-buried in the middle plate can be matched with the track top air channel embedded part, the use amount of the embedded bars and the expansion bolts is greatly reduced, and the track pre-buried in the middle plate is safe and reliable.
Drawings
FIG. 1 is a schematic plan layout of a fully compound fabricated underground station of the present invention;
FIG. 2 is a schematic cross-sectional view of a prefabricated component mechanized transportation system of a fully composite assembled subway station of the present invention;
FIG. 3 is a schematic diagram of the arrangement of a prefabricated roof embedded rail and an electric hoist of the fully-composite assembled subway station prefabricated component mechanized transportation system;
FIG. 4 is a schematic diagram of the arrangement of a prefabricated middle plate embedded track and an electric hoist of the fully-composite assembled subway station prefabricated member mechanized transportation system;
FIG. 5 is a schematic diagram of a hoisting gesture of a prefabricated middle longitudinal beam of the fully-composite assembled subway station prefabricated component mechanized transportation system;
FIG. 6 is a schematic view of a prefabricated middle plate/cushion layer lifting gesture of the fully composite assembled subway station prefabricated member mechanized transportation system of the invention;
fig. 7 is an overall front view schematic of the fully composite assembled subway station of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other. The present invention will be described in further detail with reference to the following embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-6, the present invention provides a mechanized transportation system for prefabricated components of a fully composite assembled subway station, where the subway station is configured by taking two spans, namely a left span and a right span, and further spans, in the same way, and the method comprises:
a plurality of embedded tracks extending longitudinally along the subway station are prefabricated below the prefabricated top plate 9 and the prefabricated middle plate 16 and are used for hoisting the electric hoist; the embedded track under each plate is in butt joint connection with the embedded track under the adjacent plate to form a whole, and the electric hoist is used for longitudinally and slidably hoisting the prefabricated part along the whole embedded track;
the electric hoist of prefabricated roof 9 is used for handling and installs the prefabricated well longeron 15 and the prefabricated medium plate 16 of next floor, and the electric hoist of the prefabricated medium plate 16 of upper strata is used for handling and installs the prefabricated well longeron 15 and the prefabricated medium plate 16 of next floor or the prefabricated bed course 23 of next floor bottom plate.
Preferably, the pre-buried track of the prefabricated roof 9 is also used for installing the prefabricated pipe bracket 10 after the electric hoist is removed; the pre-buried track of the pre-cast mid-plate 16 is also used to install the pre-cast rail top tunnel 28 and the pre-cast pipe bracket 10 after removal of the electric block.
As shown in fig. 2-3, an embedded track a110 and an embedded track b111 are arranged under the prefabricated top plate 9 on one side of each upright post of the subway station, an electric hoist a118 and an electric hoist i126 are sequentially arranged on the integral embedded track where the embedded track a110 is located, and an electric hoist b119 and an electric hoist j127 are sequentially arranged on the integral embedded track where the embedded track b111 is located; an embedded track c112 and an embedded track d113 are arranged under the prefabricated top plate 9 on the other side, an electric hoist c120 and an electric hoist k128 are sequentially arranged on the integral embedded track where the embedded track c112 is located, and only one electric hoist d121 is arranged on the integral embedded track where the embedded track d113 is located.
As shown in fig. 2 and 4, an embedded track e114 and an embedded track f115 are arranged under the prefabricated middle plate 16 on one side of each upright post at the subway station, only one electric hoist e122 is arranged on the integral embedded track where the embedded track e114 is arranged, and only one electric hoist f123 is arranged on the integral embedded track where the embedded track f115 is arranged;
an embedded track g116 and an embedded track h117 are arranged under the prefabricated middle plate 16 on the other side, only one electric hoist g124 is arranged on the integral embedded track where the embedded track g116 is located, and only one electric hoist h125 is arranged on the integral embedded track where the embedded track h117 is located.
As shown in fig. 5, a sling is connected between the electric hoist a118 and the electric hoist b119, and is used for lifting and mounting the prefabricated middle longitudinal beam 15 of the next layer, which supports one end of the prefabricated middle longitudinal beam 15, and a sling is connected between the electric hoist i126 and the electric hoist j127, and is used for lifting and mounting the prefabricated middle longitudinal beam 15 of the next layer, which supports the other end of the prefabricated middle longitudinal beam 15; the lower ends of the electric hoist c120 and the electric hoist k128 are respectively provided with traction ropes which are respectively and releasably connected to two ends of the supported prefabricated middle longitudinal beam 15 for traction to the longitudinal beam installation position of the upright post.
As shown in fig. 6, slings are respectively arranged at the lower ends of the electric hoist a118 and the electric hoist b119 and are used for hoisting and mounting the prefabricated middle plate 16 of the next layer; one end of the prefabricated middle plate 16 is positioned in a hanging ring formed by one hanging rope in a releasable manner, and the other end of the prefabricated middle plate 16 is positioned in a hanging ring formed by the other hanging rope in a releasable manner; one of the electric hoist c120 and the electric hoist k128 and the electric hoist d121 form a pair, and slings are respectively arranged at the lower ends of the electric hoist c120 and the electric hoist k128 and are used for hoisting and mounting the prefabricated middle plate 16 of the next layer; one end of the prefabricated middle plate 16 is positioned in a hanging ring formed by one hanging rope in a releasable manner, and the other end of the prefabricated middle plate 16 is positioned in a hanging ring formed by the other hanging rope in a releasable manner.
As shown in fig. 6, slings are respectively arranged at the lower ends of the electric hoist e122 and the electric hoist f123 and are used for hoisting and mounting the prefabricated middle plate 16 or the prefabricated cushion layer 23 of the next layer; one end of the prefabricated middle plate 16 or the prefabricated cushion layer 23 is positioned in a hanging ring formed by one hanging rope in a releasable manner, and the other end of the prefabricated middle plate 16 or the prefabricated cushion layer 23 is positioned in the hanging ring formed by the other hanging rope in a releasable manner; slings are respectively arranged at the lower ends of the electric hoist g124 and the electric hoist h125 and are used for lifting and mounting the prefabricated middle plate 16 or the prefabricated cushion layer 23 of the next layer; one end of the prefabricated middle plate 16 or the prefabricated cushion layer 23 is positioned in a hanging ring formed by one hanging rope in a releasable manner, and the other end of the prefabricated middle plate 16 or the prefabricated cushion layer 23 is positioned in a hanging ring formed by the other hanging rope in a releasable manner.
The invention discloses a fully-composite assembled subway station prefabricated member mechanized transportation system, namely, a prefabricated top plate lower embedded track a110, an embedded track b111, an embedded track c112, an embedded track d113, and 7 electric hoists including an electric hoist a118, an electric hoist b119, an electric hoist c120, an electric hoist d121, an electric hoist i126, an electric hoist j127 and an electric hoist k128 are utilized to realize transportation and assembly of a prefabricated middle longitudinal beam 15 and a prefabricated middle plate 16, and materials and the like required by construction of a middle plate cast-in-situ layer 20 and a next side wall cast-in-situ layer 22 are lifted by utilizing the transportation capacity of the prefabricated top plate lower embedded track a110, the embedded track b111, the embedded track c112 and the electric hoist b 119.
And in the same way, 4 electric hoists including the pre-buried track e114, the pre-buried track f115, the pre-buried track g116, the pre-buried track h117, the electric hoist e122, the electric hoist f123, the electric hoist g124 and the electric hoist h125 under the pre-fabricated middle plate are utilized to realize the transportation and assembly of the pre-fabricated cushion layer 23, and materials and the like required by the construction of the cast-in-situ bottom plate 25 and the underground two-layer side wall cast-in-situ layer 27 are lifted by utilizing the transportation capacity of the electric hoists.
The invention only aims at the transportation and assembly of prefabricated components below a top plate and construction materials, and before application, the station finishes the construction of the underground diaphragm wall 1, the steel column 4, the top plate cast-in-situ layer 112, the prefabricated top plate 27 and the like, wherein an embedded track a110, an embedded track b111, an embedded track c112 and an embedded track d113 are embedded into the prefabricated top plate 27 when prefabricated in a prefabricated field; the embedded track e114, the embedded track f115, the embedded track g116 and the embedded track h117 are embedded into the prefabrication middle plate 16 when prefabricating in a prefabrication field.
The invention also provides a transportation method of the full-composite assembled subway station prefabricated member mechanized transportation system, which comprises a mechanized transportation method of the prefabricated middle longitudinal beam, a mechanized transportation method of the prefabricated middle plate and a mechanized transportation method of the prefabricated cushion middle plate.
The concrete construction steps are as follows:
s1, respectively installing an electric hoist a118, an electric hoist b119, an electric hoist c120, an electric hoist d121, an electric hoist i126, an electric hoist j127 and an electric hoist k128 on an embedded track a110, an embedded track b111, an embedded track c112 and an embedded track d 113; the pre-buried sliding rail and the electric hoist are arranged as shown in figure 2;
s2, a chain is connected between the electric hoist a118 and the electric hoist b119, and a chain is connected between the electric hoist i126 and the electric hoist j 127. Firstly, placing the front end of a prefabricated middle longitudinal beam 15 on a connecting chain between an electric hoist a118 and an electric hoist b119 by utilizing an external crane, synchronously moving two electric hoists and external hoisting equipment forwards, and then placing the rear end of the prefabricated middle longitudinal beam 15 on the connecting chain between the electric hoist i126 and the electric hoist j127; the prefabricated middle longitudinal beam 15 is in a longitudinal posture along the station, and the front end and the rear end are respectively lapped on the chain, as shown in fig. 5;
s3, synchronously operating four electric hoists, and longitudinally conveying the prefabricated middle longitudinal beam 15 to a position to be placed along a station;
s4, simultaneously lowering the electric hoist b119 and the electric hoist j127 to enable the prefabricated middle longitudinal beam 15 to droop and gradually deviate to the midspan side;
s6, moving the electric hoist c120 and the electric hoist k128 to opposite sides of the prefabricated middle longitudinal beam 15, and connecting traction steel ropes to the prefabricated middle longitudinal beam 15 respectively;
s7, synchronously pulling the electric hoist c120 and the electric hoist k128, and pulling the prefabricated middle longitudinal beam 15 to a middle-span placement position; continuously lowering the prefabricated middle longitudinal beam 15 to finish assembly;
s8, hanging the prefabricated middle plate 16 from a working well by using an external crane, and respectively hanging two ends of the prefabricated middle plate on chains of the electric hoist a118 and the electric hoist b 119; the lifting gesture is as shown in figure 6;
s9, synchronously operating the electric hoist a118 and the electric hoist b119, and longitudinally conveying the prefabricated middle plate 16 to the position above the installation position along the station;
s10, simultaneously lowering the electric hoist a118 and the electric hoist b119, and splicing the prefabricated middle plate 16 in the clamping grooves of the underground diaphragm wall 1 and the prefabricated middle longitudinal beam 15 by utilizing manual or mechanical proper adjustment to finish splicing. The assembly of the prefabricated middle plate 16 on the other side is completed by using the electric hoist c120 and the electric hoist d121 in the same way;
s11, constructing an underground two-layer side wall cast-in-situ layer of the middle plate cast-in-situ layers 20 and 22, wherein an embedded track e114, an embedded track f115, an embedded track g116 and an embedded track h117 are embedded in the prefabricated middle plate 16 in a prefabrication factory, and connection is completed when the prefabricated middle plate 16 is assembled;
s12, respectively installing an electric hoist e122, an electric hoist f123, an electric hoist g124 and an electric hoist h125 on an embedded track e114, an embedded track f115, an embedded track g116 and an embedded track h 117;
s13, hanging the prefabricated cushion layer 23 from a working well by using an external crane, and respectively hanging two ends of the prefabricated cushion layer on chains of the electric hoist e122 and the electric hoist f123; as in fig. 6;
s14, synchronously operating the electric hoist e122 and the electric hoist f123, and longitudinally conveying the prefabricated cushion layer 23 to the position above the installation position along the station;
s15, simultaneously lowering the electric hoist e122 and the electric hoist f123, and completing the assembly of the prefabricated cushion layer 23 by utilizing manual or mechanical proper adjustment. The electric hoist g124 and the electric hoist h125 are used for assembling the prefabricated cushion layer 23 on the other side in the same way;
s16, constructing a cast-in-situ bottom plate 25 and an underground two-layer side wall cast-in-situ layer 27, dismantling the electric hoist, and sealing the hoisting hole to finish construction.
Other technical indexes adopted by the invention are as follows.
The embedded tracks a110, the embedded track b111, the embedded track c112, the embedded track d113, the embedded track e114, the embedded track f115, the embedded track g116 and the embedded track h117 which are mentioned in the invention are 8 embedded tracks in the prefabricated top plate 27 and the prefabricated middle plate 16 in a segmented way, are tightly connected with the steel bars in the plates and can bear the weight of the prefabricated components. After the splicing of the prefabricated top plate 27 and the prefabricated middle plate 16 is completed, proper spot welding is performed at the spliced part of the track, so that the track is smooth.
The power and lifting capacity of 7 electric hoists a118, b119, c120, d121, i126, j127 and k128 in the invention are required to meet the requirement of lifting prefabricated components.
The chain referred to in the present invention needs to be able to withstand the weight of the prefabricated parts.
The electric hoist a118, the electric hoist b119, the electric hoist c120, the electric hoist d121, the electric hoist i126, the electric hoist j127 and the electric hoist k128 disclosed by the invention are 7 electric hoists, so that the cyclic use and recovery can be realized.
The prefabricated middle longitudinal beam 15 is lifted by a whole span, the weight is about 25t, and the prefabricated middle longitudinal beam is lifted by 4 electric hoists, and the weight of each electric hoist is shared by about 6t; the prefabricated middle plate 16 is a piece with the width of 2m, the weight is about 12t, two electric hoists are used for hoisting and splicing, and the weight shared by each electric hoist is about 6t.
The embedded track a110, the embedded track b111, the embedded track c112, the embedded track d113, the embedded track e114, the embedded track f115, the embedded track g116 and the embedded track h117 which are mentioned in the invention are 8 embedded tracks, and the embedded tracks do not need to be dismantled after being used. The embedded track a110, the embedded track b111, the embedded track c112 and the embedded track d113 can be used for suspending a lower pipeline of a roof; the embedded rail e114, the embedded rail f115, the embedded rail g116 and the embedded rail h117 can be matched with an installation rail top air duct and a suspension pipeline for use, so that the use amount of the embedded bars and the expansion bolts is greatly reduced, and the embedded rail is safe and reliable.
The 8 electric hoists mentioned in the invention can be used for lifting construction materials during construction of the middle plate cast-in-situ layer 20, 22 underground two-layer side wall cast-in-situ layer, the cast-in-situ bottom plate 25 and the underground two-layer side wall cast-in-situ layer 27.
As shown in fig. 7, the present invention further provides a fully-assembled underground structure (for example, a subway station), and the mechanized transportation system and method for the prefabricated components of the fully-assembled subway station are adopted, wherein:
comprises an underground wall 1 and a main body structure upright post; the top of the underground wall is provided with a crown beam 5, and a steel structure clamping groove 2 for installing the prefabricated middle plate in a pre-buried mode is used for positioning and supporting when the prefabricated middle plate is hoisted, the height of the clamping groove is larger than the thickness of the middle plate, when the elevation of the clamping groove of the underground wall has errors, the clamping groove of the underground wall allows the two to move relatively, and the middle plate can still be ensured to be positioned at the designed elevation; the top of the main body structure upright post is provided with a prefabricated top longitudinal beam 8, and the middle of the main body structure upright post is provided with a prefabricated middle longitudinal beam 15. The main structure upright post comprises a pile foundation 3 and a steel upright post 4, and the steel upright post 4 is required to be inserted into the pile foundation 3 for a certain depth, so that reliable combination of the pile foundation 3 and the steel upright post is ensured; the steel upright post 4 adopts a steel pipe concrete column, steel reinforced concrete or outsourcing concrete to form a steel pipe concrete superposed column. A top plate pre-stress jack 11 is arranged between the crown beam 5 and the prefabricated top plate 9, and a middle plate pre-stress jack 19 is arranged between the steel structure clamping groove 2 and the prefabricated middle plate 16. In consideration of certain errors required for installation and positioning of the prefabricated members, transverse prestressing force is applied to the top plate prefabricated members and the middle plate prefabricated members through the top plate prestressing force jack 11 and the middle plate prestressing force jack 19 respectively, so that the reserved errors are balanced and offset, deformation of the underground wall is controlled, and safety and stability of the foundation pit and surrounding structures are ensured. The precast slabs are tensioned and locked into a whole longitudinally (in the direction of paper) by adopting prestressed steel bars or locking steel bars section by section.
The prefabricated roof 9 arranged between the prefabricated roof longitudinal beams 8, the crown beam 5 and the prefabricated roof longitudinal beams 8, the prefabricated roof 9 arranged between two adjacent prefabricated roof longitudinal beams 8, the roof cast-in-situ layer 12 on the roof and the roof flexible waterproof layer 13 on the roof cast-in-situ layer form a composite waterproof prestress roof together.
The prefabricated middle longitudinal beam 15, the steel structure clamping groove 2, the prefabricated middle plate 16 arranged between the prefabricated middle longitudinal beams 15, the prefabricated middle plate 16 arranged between the two adjacent prefabricated middle longitudinal beams 15 and the middle plate cast-in-situ layer 20 on the middle plate jointly form a composite prestress middle plate.
The prefabricated cushion layer 23, the bottom plate waterproof layer 24 and the cast-in-situ bottom plate 25 which are sequentially arranged on the substrate from bottom to top form a composite waterproof bottom plate together.
The underground wall 1 and the side wall waterproof layer and the side wall cast-in-situ layer which are sequentially arranged in the inward direction of the underground wall form a composite waterproof wall together.
The prefabricated top plate 9 is hung with a prefabricated pipeline bracket 10 through a pre-buried groove to form an integral prefabricated member. The prefabricated middle plate 16 is hung with the prefabricated pipeline bracket 10 and the prefabricated rail top air duct 28 through the pre-buried groove, and is provided with the pre-buried pipeline sleeve 18 in a penetrating way up and down to form an integral prefabricated member. Grooves are reserved on the inner side of the crown beam 5, protruding rabbets are reserved on the two sides of the prefabricated top longitudinal beam 8, protruding rabbets are reserved on the two sides of the prefabricated middle longitudinal beam 15, and the prefabricated top plate 9 and the prefabricated middle plate 16 are convenient to hoist and mount.
The composite waterproof prestress top plate, the composite prestress middle plate, the composite waterproof bottom plate and the composite waterproof wall are effectively connected to form the fully-covered waterproof fully-composite assembled underground structure, so that the problem of water leakage of the fully-assembled underground structure is solved, the limitation of the application range of the assembled underground structure is broken through, the assembled underground structure can be applied to water-rich stratum, areas with complex surrounding environment and high deformation control, and the assembled underground structure can be forcefully pushed to be widely applied to underground engineering. The invention replaces a large number of internal supports and templates of the conventional open cut cast-in-situ structure, thereby saving investment; meanwhile, the pre-axial pressure can be set on the prefabricated part to balance and offset the deformation of the assembly gaps, so that the surrounding environment can be effectively protected, and the safety of the foundation pit is ensured. The prefabricated components are manufactured in a factory and mechanically constructed, so that the high quality and the superior quality of the underground structural engineering are realized, the traditional ceiling decoration is replaced, the embedded channels are used for realizing the standardized and mechanical installation of the comprehensive pipeline, the investment and the construction period are saved, the environment-friendly construction is realized, the energy is saved, the environment is protected, the technology is advanced, the sustainable development and the environment-friendly construction are realized, the practicability is strong, and the application space is wide in the field of the underground engineering.
The invention relates to a reverse construction method of a composite assembled underground structure, which comprises the following steps:
s1, constructing an underground wall 1 and a main structure upright column, wherein a steel structure clamping groove 2 for installing a prefabricated middle plate is pre-buried on the underground wall 1; in the step S1, the underground wall 1 is a concrete underground continuous wall or a prefabricated underground wall which is poured underwater; the construction method of the main structure column comprises the steps of firstly constructing a pile foundation 3, then hoisting a steel column 4, inserting the steel column into the pile foundation 3, and forming a steel pipe concrete superposed column by the steel column 4 by adopting a steel pipe concrete column, steel reinforced concrete or outsourcing concrete.
S2, shi Zuoguan beams 5 and retaining walls 6.
S3, excavating an earth surface 7 below the roof beam, and hoisting the prefabricated roof beam 8 and the prefabricated roof 9, wherein the prefabricated pipeline bracket 10 is pre-buried in the factory manufacturing process of the prefabricated roof. Preferably, a groove is reserved in the construction of the crown beam 5, and a convex tongue-and-groove is reserved in the prefabricated roof rail 8 for hoisting and placing the prefabricated roof 9.
S4, pre-stressing is firstly applied to the prefabricated top plate 9 through a top plate pre-stressing jack 11 between the crown beam 5 and the prefabricated top plate 9, then a top plate cast-in-situ layer 12 is cast, and a top plate flexible waterproof layer 13 is constructed, wherein a plurality of soil outlet and feeding holes are longitudinally arranged along the top plate according to the requirements of soil outlet and feeding.
S5, under the support of the precast beam slab system, excavating earth downwards to the lower side of the lower middle beam synchronously, and excavating the earth 14. Preferably, in the S4-S5, after the top plate precast beam plate system, the cast-in-situ layer and the waterproof layer are completed, pipelines can be restored and backfilled with earth, traffic is restored, and the influence on urban traffic and pipelines can be reduced.
S6, hoisting the prefabricated middle longitudinal beam 15 and the prefabricated middle plate 16 by using the upper layer of soil outlet and feeding holes, wherein a hanging installation groove pre-buried with the prefabricated pipeline bracket 17, the pre-buried pipeline sleeve 18 and the prefabricated rail top air duct 28 is arranged in the factory manufacturing process of the prefabricated middle plate. The underground wall 1 is embedded with a steel structure clamping groove 2 at the elevation position of the middle plate, and a convex tongue-and-groove is reserved on the prefabricated middle longitudinal beam 15 for hoisting and placing the prefabricated middle plate 16. During hoisting, the steel structure clamping groove 2 reserved in the underground diaphragm wall 1 is inserted into the middle longitudinal beam rabbet reserved in the prefabricated middle longitudinal beam 15. The hoisting adopts the mechanized transportation technology of the prefabricated components of the fully-composite assembled subway station.
S7, pre-stressing the prefabricated middle plate 16 by utilizing the middle plate pre-stressing jack 19 in the steel structure clamping groove 2, and then casting the middle plate cast-in-situ layer 20, wherein the soil outlet and the feeding holes of the middle plate correspond to the upper layer.
S8, synchronously excavating downwards under the support of the precast beam plate; and synchronously constructing an underground one-layer side wall waterproof layer 21 and an underground one-layer side wall cast-in-situ layer 22.
S9, downwards circulating S5-S7, and excavating to the bottom of the foundation pit.
S10, installing a prefabricated cushion layer 23, applying a waterproof layer 24 of a base plate and casting a base plate 25 in situ. The hoisting of the cushion layer adopts the mechanized transportation technology of the prefabricated components of the fully-composite assembled subway station.
S11, constructing a bottom plate layer side wall waterproof layer 26 and a bottom plate layer side wall cast-in-situ layer 27; and simultaneously and sequentially replenishing the soil outlet and the feeding hole.
Preferably, after S11, further comprising:
and S12, after the main body of the composite assembled underground structure is finished and shield construction within the influence range of the adjacent sections is finished, installing the prefabricated rail top air duct 28 through a suspension installation groove pre-buried in the prefabricated middle plate.
The fully-covered waterproof fully-composite assembled underground structure and the construction method have the advantages that the whole construction process does not need to be provided with the support and the templates, the construction operation can be synchronized under the upper plate and the lower plate, the time for waiting for the formation of the age is greatly shortened, the construction method is environment-friendly, quick, convenient, safe, efficient, environment-friendly, energy-saving, investment-saving and the like, and the application space is wide.
The top plate, the middle plate prefabricated member and the cast-in-situ layer replace the internal support and the template, the main structure is finished after the bottom plate is closed and the side wall is finished by utilizing the arranged unearthed feeding holes, unearthed, feeding, hoisting the prefabricated middle plate and assembly machinery to enter and exit.
The structure cast-in-situ layer comprises a top plate cast-in-situ layer, a middle plate cast-in-situ layer and a cast-in-situ bottom plate, and prefabricated members are used as templates during casting, so that a large number of templates can be saved.
The fully-composite assembled underground structure construction method is characterized in that the top plate prefabricated member, the cast-in-situ layer, the middle plate prefabricated member and the cast-in-situ layer are utilized to replace an inner support system, so that the surrounding construction materials of the foundation pit can be effectively protected, and a large amount of engineering investment is saved.
The fully-composite assembled underground structure construction method is characterized in that the top plate prefabricated member, the cast-in-situ layer, the middle plate prefabricated member and the cast-in-situ layer are utilized to replace an inner support system, so that the surrounding construction materials of the foundation pit can be effectively protected, and a large amount of engineering investment is saved. In consideration of certain errors required for installation and positioning of the prefabricated members, transverse prestressing force is applied to the top plate prefabricated members and the middle plate prefabricated members through the top plate prestressing force jack and the middle plate prestressing force jack respectively, so that the reserved errors are balanced and offset, deformation of the underground wall is controlled, and safety and stability of the foundation pit and surrounding structures are ensured. The precast slabs are tensioned and locked into a whole longitudinally (in the direction of paper) by adopting prestressed steel bars or locking steel bars section by section.
The splicing and assembling of the prefabricated components of the structure are completed, and the assembled components are connected through mortises and high-strength bolts; the prefabricated cushion layer can also adopt a cast-in-place concrete structure.
The composite assembled underground structure and the construction method thereof are applicable to underground one layer, two layers and more layers, and can be applicable to a non-column single-span, single-column double-span, double-column three-span or more-span multilayer underground structure according to engineering requirements.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A full-composite assembled subway station prefabricated member mechanized transportation system is characterized in that:
a plurality of embedded tracks extending longitudinally along the subway station are prefabricated below the prefabricated top plate (9) and the prefabricated middle plate (16) and are used for hoisting the electric hoist; the embedded track under each plate is in butt joint connection with the embedded track under the adjacent plate to form a whole, and the electric hoist is used for longitudinally and slidably hoisting the prefabricated part along the whole embedded track;
the electric hoist of prefabricated roof (9) is used for handling and installs longeron (15) and prefabricated medium plate (16) in the prefabrication of next floor, and the electric hoist of prefabricated medium plate (16) of upper strata is used for handling and installs longeron (15) and prefabricated medium plate (16) or the prefabricated bed course (23) of next floor bottom plate in the prefabrication of next floor.
2. The mechanized transportation system of prefabricated components of the fully-composite assembled subway station according to claim 1, wherein:
the pre-buried track of the prefabricated top plate (9) is also used for installing a prefabricated pipeline bracket (10) after the electric hoist is dismantled;
the pre-buried track of the pre-cast middle plate (16) is also used for installing a pre-cast rail top air duct (28) and a pre-cast pipeline bracket (10) after the electric hoist is removed.
3. The mechanized transportation system of prefabricated components of the fully composite assembled subway station according to any one of claims 1 to 2, wherein:
an embedded track a (110) and an embedded track b (111) are arranged below a prefabricated top plate (9) on one side of each upright post of the subway station, an electric hoist a (118) and an electric hoist i (126) are sequentially arranged on the integral embedded track where the embedded track a (110) is located, and an electric hoist b (119) and an electric hoist j (127) are sequentially arranged on the integral embedded track where the embedded track b (111) is located;
an embedded track c (112) and an embedded track d (113) are arranged under the prefabricated top plate (9) at the other side, an electric hoist c (120) and an electric hoist k (128) are sequentially arranged on the integral embedded track where the embedded track c (112) is arranged, and only one electric hoist d (121) is arranged on the integral embedded track where the embedded track d (113) is arranged.
4. A fully compounded assembled subway station prefabricated component mechanized transportation system as set forth in claim 3, wherein:
an embedded track e (114) and an embedded track f (115) are arranged below a prefabricated middle plate (16) on one side of each upright post of the subway station, only one electric hoist e (122) is arranged on the integral embedded track where the embedded track e (114) is located, and only one electric hoist f (123) is arranged on the integral embedded track where the embedded track f (115) is located;
an embedded track g (116) and an embedded track h (117) are arranged under the prefabricated middle plate (16) on the other side, only one electric hoist g (124) is arranged on the integral embedded track where the embedded track g (116) is located, and only one electric hoist h (125) is arranged on the integral embedded track where the embedded track h (117) is located.
5. A fully compounded assembled subway station prefabricated component mechanized transportation system as set forth in claim 3, wherein:
a sling is connected between the electric hoist a (118) and the electric hoist b (119) and is used for lifting and mounting a prefabricated middle longitudinal beam (15) of the next layer, one end of the prefabricated middle longitudinal beam (15) is supported by the sling, the sling is connected between the electric hoist i (126) and the electric hoist j (127) and is used for lifting and mounting the prefabricated middle longitudinal beam (15) of the next layer, and the other end of the prefabricated middle longitudinal beam (15) is supported by the sling;
the lower ends of the electric hoist c (120) and the electric hoist k (128) are respectively provided with traction ropes which are respectively and releasably connected to two ends of the supported prefabricated middle longitudinal beam (15) for traction to the longitudinal beam installation position of the upright post.
6. A fully compounded assembled subway station prefabricated component mechanized transportation system as set forth in claim 3, wherein:
slings are respectively arranged at the lower ends of the electric hoist a (118) and the electric hoist b (119) and are used for hoisting and mounting a prefabricated middle plate (16) of the next layer; one end of the prefabricated middle plate (16) is positioned in a hanging ring formed by one hanging rope in a releasable mode, and the other end of the prefabricated middle plate (16) is positioned in a hanging ring formed by the other hanging rope in a releasable mode;
one of the electric hoist c (120) and the electric hoist k (128) forms a pair with the electric hoist d (121), and slings are respectively arranged at the lower ends of the electric hoist c and the electric hoist k and are used for hoisting and mounting a prefabricated middle plate (16) of the next layer; one end of the prefabricated middle plate (16) is positioned in a hanging ring formed by one hanging rope in a releasable mode, and the other end of the prefabricated middle plate (16) is positioned in a hanging ring formed by the other hanging rope in a releasable mode.
7. The mechanized transportation system of prefabricated components of the fully-assembled subway station according to claim 4, wherein:
slings are respectively arranged at the lower ends of the electric hoist e (122) and the electric hoist f (123) and are used for hoisting and mounting a prefabricated middle plate (16) or a prefabricated cushion layer (23) of the next layer; one end of the prefabricated middle plate (16) or the prefabricated cushion layer (23) is positioned in a hanging ring formed by one hanging rope in a releasable mode, and the other end of the prefabricated middle plate (16) or the prefabricated cushion layer (23) is positioned in the hanging ring formed by the other hanging rope in a releasable mode;
slings are respectively arranged at the lower ends of the electric hoist g (124) and the electric hoist h (125) and are used for hoisting and mounting a prefabricated middle plate (16) or a prefabricated cushion layer (23) of the next layer; one end of the prefabricated middle plate (16) or the prefabricated cushion layer (23) is positioned in a hanging ring formed by one hanging rope in a releasable mode, and the other end of the prefabricated middle plate (16) or the prefabricated cushion layer (23) is positioned in the hanging ring formed by the other hanging rope in a releasable mode.
8. A method of transporting a fully composite assembled subway station prefabricated component mechanized transportation system as described in any one of claims 3 to 7, characterized in that: the mechanized transportation method of the prefabricated middle longitudinal beam comprises the following steps:
s1, respectively installing an electric hoist a (118), an electric hoist i (126), an electric hoist b (119), an electric hoist j (127), an electric hoist c (120), an electric hoist k (128) and an electric hoist d (121) on an embedded track a (110), an embedded track b (111), an embedded track c (112) and an embedded track d (113);
s2, connecting a sling between the electric hoist a (118) and the electric hoist b (119), and connecting a sling between the electric hoist i (126) and the electric hoist j (127); firstly, placing the front end of a prefabricated middle longitudinal beam (15) on a sling connected between an electric hoist a (118) and an electric hoist b (119) by utilizing an external crane, synchronously moving the two electric hoists and the external crane forwards, and then placing the rear end of the prefabricated middle longitudinal beam (15) on the sling connected between the electric hoist i (126) and the electric hoist j (127);
s3, synchronously moving the four electric hoists longitudinally, and longitudinally conveying the prefabricated middle longitudinal beam (15) to a preset installation position along a station;
s4, simultaneously lowering the electric hoist b (119) and the electric hoist j (127) to enable the prefabricated middle longitudinal beam (15) to droop and gradually deviate to the upright post side;
s6, moving the electric hoist c (120) and the electric hoist k (128) to opposite sides of the prefabricated middle longitudinal beam (15), and connecting traction ropes with the prefabricated middle longitudinal beam (15) respectively;
s7, synchronously pulling the electric hoist c (120) and the electric hoist k (128), and pulling the prefabricated middle longitudinal beam (15) to the upright post side; and continuously lowering the prefabricated middle longitudinal beam (15) to the installation position to finish the installation of the prefabricated middle longitudinal beam.
9. A method of transporting a fully composite assembled subway station prefabricated component mechanized transportation system as described in any one of claims 3 to 7, characterized in that: the mechanized transportation method of the prefabricated middle plate comprises the following steps:
s1, hanging a prefabricated middle plate (16) from a working well by using an external crane, and respectively hanging two ends of the prefabricated middle plate in hanging rings formed by slings of an electric hoist a (118) and an electric hoist b (119);
s2, synchronously and longitudinally moving the electric hoist a (118) and the electric hoist b (119), and longitudinally conveying the prefabricated middle plate (16) to the position above the installation position along the station;
s3, simultaneously lowering the electric hoist a (118) and the electric hoist b (119), adjusting the position of the prefabricated middle plate, splicing the prefabricated middle plate (16) in clamping grooves of the underground continuous wall (1) and the prefabricated middle longitudinal beam (15), and completing splicing;
s4, assembling any one of an electric hoist c (120) and an electric hoist k (128) of other prefabricated middle plates on the other side of the upright post and an electric hoist d (121) according to the method of S1-S3;
s5, constructing a middle plate cast-in-situ layer (20) and an underground one-layer side wall cast-in-situ layer (22), and reserving a hoisting hole for the next layer, thereby completing the composite assembly of the middle plate layer.
10. A method of transporting a fully composite assembled subway station prefabricated component mechanized transportation system as described in any one of claims 3 to 7, characterized in that: the mechanized transportation method of the prefabricated cushion middle plate comprises the following steps:
s1, when the composite assembly of the middle plate layer of the upper layer is completed, an embedded track e (114), an embedded track f (115), an embedded track g (116) and an embedded track h (117) are embedded in a prefabricated middle plate (16) in a prefabricated factory, and longitudinal connection is completed when the prefabricated middle plate (16) is assembled;
s2, respectively mounting an electric hoist e (122), an electric hoist f (123), an electric hoist g (124) and an electric hoist h (125) on an embedded track e (114), an embedded track f (115), an embedded track g (116) and an embedded track h (117);
s3, hanging the prefabricated cushion layer (23) from a working well by using an external crane, and respectively hanging two ends of the prefabricated cushion layer in hanging rings formed by slings of the electric hoist e (122) and the electric hoist f (123);
s4, synchronously operating the electric hoist e (122) and the electric hoist f (123), and longitudinally conveying the prefabricated cushion layer (23) to the position above the installation position along the station;
s5, simultaneously lowering the electric hoist e (122) and the electric hoist f (123), and completing assembly of the prefabricated cushion layer (23) by utilizing manual or mechanical proper adjustment;
s6, assembling the prefabricated cushion layer (23) on the other side of the upright post by using the electric hoist g (124) and the electric hoist h (125) of the other prefabricated middle plate on the other side according to the method of S1-S5;
s7, constructing a cast-in-situ bottom plate (25) and an underground two-layer side wall cast-in-situ layer (27), removing all electric hoists of the middle plate on the upper side, and sealing the hoisting holes to finish construction.
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