CN111271090B - Construction method for partition plate in urban underground comprehensive pipe gallery - Google Patents
Construction method for partition plate in urban underground comprehensive pipe gallery Download PDFInfo
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- CN111271090B CN111271090B CN202010186136.1A CN202010186136A CN111271090B CN 111271090 B CN111271090 B CN 111271090B CN 202010186136 A CN202010186136 A CN 202010186136A CN 111271090 B CN111271090 B CN 111271090B
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- 238000005192 partition Methods 0.000 title claims abstract description 103
- 238000010276 construction Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000011065 in-situ storage Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 46
- 230000007246 mechanism Effects 0.000 claims description 44
- 230000008569 process Effects 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000009415 formwork Methods 0.000 claims description 5
- 230000032258 transport Effects 0.000 claims description 5
- 238000011900 installation process Methods 0.000 abstract description 6
- 238000009417 prefabrication Methods 0.000 description 12
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000007630 basic procedure Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/122—Working or loading platforms
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
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- Geochemistry & Mineralogy (AREA)
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Abstract
The invention relates to the field of tunnels and underground engineering, in particular to a construction method of a partition board in an urban underground comprehensive pipe gallery, which comprises the following steps: s1: constructing the side beam bracket; s2: the middle partition plate is installed in a transportation mode, wherein S1 comprises S1.1: arranging a movable working platform; s1.2: setting a concrete template; s1.3: refitting a concrete tank car; s1.4: pouring the side beam bracket in situ; s1.5: curing the concrete; s2 includes S2.1: erecting a temporary bridge: the temporary bridge is a steel structure component; s2.2: transporting the middle partition plate; s2.3: the middle partition plate is installed in place; the construction method is designed aiming at all problems encountered in the installation process of the partition board in the shield tunnel, and integrates and optimizes the construction mode of a single equipment device into a set of continuous construction procedures, so that the smooth proceeding of all the procedures is ensured, all the procedures in the shield tunnel construction are possible to be performed simultaneously, the construction quality is ensured, the total construction period is reduced, and the potential safety hazard of operation is overcome.
Description
Technical Field
The invention relates to the field of tunnels and underground engineering, in particular to a construction method of a partition plate in an urban underground comprehensive pipe gallery.
Background
The construction of shield prefabrication and assembly segment tunnels is an advanced construction method in the field of tunnels and underground engineering at present, the outer diameter of the existing shield prefabrication and assembly segment tunnels is 6m, the inner diameter of the existing shield prefabrication and assembly segment tunnels is 5.4m, in order to embody the comprehensive function of a pipe gallery, a middle partition plate is required to be arranged at a height of about 2.7m in the middle of the end face of a tunnel, the construction is carried out by adopting a mode of additionally laying the prefabricated middle partition plate by a cast-in-place boundary beam, the middle partition plate divides the tunnel into an upper cabin and a lower cabin, each middle partition plate is about 3.8 tons in weight, and the middle partition.
However, as the installation of the prefabricated middle partition boards in the shield-assembled segment tunnel is not a perfect and unified construction method, a plurality of difficulties are encountered in the installation process of the existing middle partition boards, which mainly include: (1) the inner space of the prefabricated assembled circular duct piece of the tunnel is narrow, the base in the tunnel is only 1.82m wide, the transportation of the prefabricated middle partition plate with heavier weight and larger volume is extremely inconvenient, and the duct piece in the duct rack is easily damaged due to the fact that the wheel of the transportation mechanism has larger pressure on the circular duct piece; (2) the height difference between a foundation pit at the bottom of the working well and the bottom of the tunnel is about 1m, and when the middle partition plate is transported into the tunnel from the working well foundation pit, the transportation process of related materials and equipment from the working well to the tunnel is very difficult due to the large transportation height difference; (3) the construction of boundary beams, brackets, bases and the like is required before the middle partition plates are laid, the construction position is about 2.7m away from the bottom of the tunnel, the construction belongs to high-altitude operation, an operation platform needs to be built, the construction process is complex, and after the operation platform is built, normal transportation of other devices related to the tunnel construction process in the pipe gallery tunnel can be directly blocked, the smooth walking of operators is influenced, the normal operation of other processes is influenced, and the construction period is prolonged; (4) the long-distance pumping concrete is used for carrying out side beam cast-in-place, and the quality of the concrete is difficult to ensure; as above these difficulties lead to the installation of baffle in the shield constructs assembles section of jurisdiction tunnel in current prefabrication, and the process is complicated, the construction difficulty, can not realize accomplishing with the cooperation of other processes, has not only prolonged the whole time limit for a project, can't satisfy the requirement of current time limit for a project, causes certain operation potential safety hazard in addition easily.
In summary, a technical scheme is urgently needed at present to solve the technical problems that the installation of the existing prefabricated middle partition boards in the shield splicing segment tunnel is not a perfect and unified construction method, a plurality of difficulties are encountered in the installation process, the requirements of the existing construction period cannot be met, and certain operation potential safety hazards are easily caused.
Disclosure of Invention
The invention aims to: aiming at the problems in the prior art, the construction method for the partition plate in the urban underground comprehensive pipe gallery is provided.
In order to achieve the purpose, the invention adopts the technical scheme that:
a partition plate construction method in an urban underground comprehensive pipe gallery comprises the following steps: s1: constructing the side beam bracket: after the civil engineering is handed over, a side beam bracket is arranged at the installation position of the middle partition plate and used for supporting the middle partition plate; s2: the middle partition plate is transported and installed: transporting the partition board from the outside of the tunnel to an installation position and installing it in place, wherein S1 includes the steps of: s1.1: the mobile working platform is arranged: erecting a working platform in the pipe gallery, wherein the working platform comprises roller assemblies which are respectively arranged at two sides along the width direction of the tunnel, the two roller assemblies are respectively abutted against the arc-shaped side wall of the shield prefabricated assembled pipe piece, and a clear height passing space of 1.0-1.8m is formed at the bottom of the working platform; s1.2: setting a concrete template: arranging suspension type concrete formworks on two side walls of the tunnel; s1.3: refitting a concrete tank truck: the wheel radial direction of a concrete tank truck is consistent with the radial direction of the shield prefabricated assembled segment in a mode of inward inclination of a main pin, and a concrete pump is arranged on the concrete tank truck; s1.4: side beam bracket cast-in-place: adopting the modified concrete tank car cast-in-situ side beam bracket; s1.5: curing the concrete; s2 includes the steps of: s2.1: erecting a temporary bridge: erecting a temporary bridge for connecting tunnel mouths on two sides in a working well foundation pit, wherein the temporary bridge is a steel structure assembly; s2.2: and (3) transporting a middle partition plate: transporting the middle partition plate to a mounting position from a feed opening of the working well by adopting a transporting and mounting integrated machine or a truck-mounted crane mounting vehicle; the median septum is installed in place.
The invention relates to a construction method of a partition board in an urban underground comprehensive pipe gallery, which comprises the steps of firstly, erecting a working platform, providing construction conditions of basic procedures such as measurement lofting, anchor bolt punching installation, side beam reinforcing steel bar binding, template installation and disassembly for the installation of the partition board, realizing the simultaneous implementation of the basic procedures and other procedures in a tunnel, simultaneously, carrying out cast-in-place operation on a suspension type concrete template by a concrete tank car refitted by wheels, not only ensuring the concrete quality and the engineering quality, but also increasing the contact area between the wheels and the pipe wall, reducing the unit pressure, avoiding the damage of the wheels to a shield tunnel prefabricated assembled segment and ensuring the overall engineering quality, and additionally, establishing a smooth transportation channel for the partition board between a working well and an installation position by erecting an access bridge of a steel structure component, ensuring the safety of the partition board in a narrow space of the shield prefabricated assembled tunnel, ensuring the segment, The smooth movement, then, supporting adopt transportation installation all-in-one or vehicle-mounted crane installing vehicle to carry out the transportation installation of median septum, the mounting means is simple, time saving and labor saving, this construction method is to the design of each problem that meets in the shield tunnel median septum installation, the construction method of single equipment device integrates the optimization into one set of continuous construction process, not only guarantee going on smoothly of each process, and each process has the possibility of going on simultaneously in making the shield tunnel construction, when guaranteeing construction quality, the total time limit for a project of construction has been reduced, the potential safety hazard of operation has been overcome.
As a preferable scheme of the invention, in S1.1, the working platform includes a platform panel, the bottom of the platform panel is provided with a plurality of support legs, the tops of the support legs are connected with the platform panel, the bottoms of the support legs are connected with the roller assemblies, and the support legs are arranged along the radial direction of the shield prefabricated segment. Through the landing leg that adopts the area wheel components and the prefabricated arc inner wall butt of assembling the section of jurisdiction of shield, make things convenient for smooth and easy removal along tunnel direction of work platform, not only can avoid setting up of work platform to influence the normal current of staff and each equipment, can avoid setting up of work platform to exert too big local pressure to the prefabricated section of jurisdiction of assembling of shield moreover, guarantee the prefabricated safety in utilization of assembling the section of jurisdiction of shield.
As a preferred scheme of the present invention, the platform panel includes a frame and a plurality of support plates disposed on the frame, and the frame is provided with a slot adapted to the support plates.
As a preferable scheme of the invention, in S1.2, the concrete form includes a support and a form body disposed on the support, one sides of the support and the form body, which are close to the shield prefabricated assembled segment, are respectively attached to the shield prefabricated assembled segment, the support is connected to a channel bolt of the shield prefabricated assembled segment, a strip-shaped hole for connecting to the form body bolt is disposed on the support, and a long side of the strip-shaped hole is disposed along a length direction of the tunnel. Form the boundary beam that is used for installing the median septum through the cast-in-place mode of suspension type model body cooperation that adopts support and model body to constitute, it is big to have broken traditional console mode support area, influence the technical problem of follow-up construction, and the structure is reliable, occupation space is few, can directly fix to shield on the prefabricated section of jurisdiction lateral wall, can not influence the normal current of staff and other equipment, and simultaneously, set up to the bar hole through the connecting hole between with support and the model body, make things convenient for the installation and the dismantlement of the two, and can be more convenient along the relative position between tunnel direction adjustment model body and the support, reduce the installation error of model body, guarantee boundary beam construction and on-the-spot actual conditions adaptation.
As a preferable scheme of the invention, in S2.1, slope structural members are respectively arranged on two end surfaces of the top surface of the temporary bridge along the tunnel direction, the slope structural members are located at corners of the top surface of the temporary bridge, and the slope structural members are used for eliminating a height difference between the temporary bridge and the arc-shaped inner walls of the shield prefabricated segment. When the suspension bridge connects two adjacent tunnel portals, and the suspension bridge width is greater than when shield tunnel bottom surface horizontal surface width, must exist between suspension bridge and the tunnel portal because shield tunnel prefabrication is assembled the section of jurisdiction and is arc lateral wall and the difference in height between the tunnel portal lateral wall that forms and the suspension bridge top surface, to this characteristics of shield tunnel prefabrication assembly section of jurisdiction arc side, set up the slope structure spare through the particular position on the suspension bridge, make to form the passageway that can satisfy the smooth operation of the conveyer who bears the median septum between two tunnel portals, guarantee the safety of median septum in the narrow and small space of shield prefabrication assembly section of jurisdiction tunnel, the steady movement.
As a preferable scheme of the invention, the top surface of the temporary bridge is flush with the bottom surface of the tunnel, the temporary bridge comprises two hole sections and a plurality of middle sections, the hole sections are detachably connected with the middle sections, and the middle sections adjacent to each other in the tunnel direction are detachably connected. Through set up the steel construction component temporary bridge that many sections are constituteed between two tunnel mouths, simple structure not only, it is easy to prepare, and can carry out the temporary bridge width according to the actual conditions of working well, length and height's regulation, and adopt the temporary bridge of section combination formula, each section can be easy hang into the back from the working well and then assemble on the spot, also can be easier split after the use recycle, make this temporary bridge can be adapted to the use of the narrow and small shield tunnel of the supporting inner space of working well of narrow and small area, economic environmental protection has, the beneficial effect of easy preparation and convenient recovery.
As a preferable scheme of the invention, when two temporary bridges are provided, all the temporary bridges are arranged along the width direction of the tunnel, the adjacent temporary bridges are fixedly connected through steel structural sections, and the top surfaces of the adjacent temporary bridges are provided with lap plates. The temporary bridge with the widened width is formed by adopting the steel structural sections and the lap plates matched with the multiple temporary bridges, so that the temporary bridge with the width meeting the use requirement is provided for the transportation of the middle partition plate with larger volume and heavier weight in the shield tunnel.
As a preferable scheme of the present invention, in S2.2, a lifting mechanism, a rotating mechanism and a longitudinally moving mechanism are arranged on the transporting and mounting integrated machine, the lifting mechanism is arranged on the rotating mechanism, the rotating mechanism is arranged on the longitudinally moving mechanism, the lifting mechanism is used for jacking the middle partition plate to a position above the mounting position, the rotating mechanism is used for rotating the middle partition plate, and the longitudinally moving mechanism is used for moving the middle partition plate to the mounting position.
As a preferred scheme of the invention, when the transportation and installation integrated machine is adopted, the S2.2 comprises the following steps: s2.2.1: hoisting the middle partition plate to the bracket of the tunnel inner all-in-one machine at a feed opening of the working well by using a crane; s2.2.2: the integrated machine conveys the middle clapboard to the front of the installation position by 3.3-3.7m along the temporary bridge; s2.2.3: the lifting mechanism on the integrated machine lifts the middle clapboard to the upper part of the side beam; s2.2.4: the swing mechanism on the all-in-one machine integrally rotates and lifts the lifting mechanism with the middle partition plate until the length direction of the middle partition plate is along the width direction of the tunnel; s2.2.5: the longitudinal moving mechanism on the integrated machine moves the middle clapboard lifted to the installation position to a proper position.
As a preferable scheme of the invention, when the truck-mounted crane is adopted for mounting the vehicle, the S2.2 comprises the following steps: s2.2.1: hoisting a middle partition plate to a mounting vehicle bracket in the tunnel at a feed opening of the working well by using a crane, wherein a vehicle-mounted crane is arranged on the mounting vehicle; s2.2.2: the mounting vehicle transports the middle partition plate to the front 2m of the mounting position along the temporary bridge; s2.2.3: installing a vehicle-mounted crane on the vehicle to lift the middle partition plate to the upper part of the side beam; s2.2.4: manually rotating the middle partition plate in the hoisting process until the length direction of the middle partition plate is along the width direction of the tunnel; s2.2.5: the truck-mounted crane on the mounting truck is lowered, and the middle partition plate is placed in place.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. by erecting a working platform, construction conditions of procedures such as measurement lofting, anchor bolt drilling installation, side beam reinforcement binding, template installation and disassembly are provided for middle partition installation, and the basic procedures and other procedures in the tunnel are simultaneously carried out;
2. the concrete tank truck modified by wheels is used for carrying out cast-in-place operation on the suspended concrete template, so that the concrete quality and the engineering quality are ensured, the damage to prefabricated assembled duct pieces of the shield tunnel is avoided, and the overall engineering quality is ensured;
3. by erecting an access bridge of a steel structure assembly, a smooth transportation channel is established for the middle partition plate between the working well and the installation position, and the safe and stable movement of the middle partition plate in the narrow space of the shield prefabricated segment assembling tunnel is ensured;
4. the transportation and installation integrated machine or the truck-mounted crane installation vehicle is adopted for transporting and installing the middle partition plate, the installation mode is simple, and time and labor are saved;
5. the construction method is designed aiming at all problems encountered in the installation process of the partition board in the shield tunnel, and integrates and optimizes the construction mode of a single equipment device into a set of continuous construction procedures, so that the smooth proceeding of all the procedures is ensured, all the procedures in the shield tunnel construction are possible to be performed simultaneously, the construction quality is ensured, the total construction period is reduced, and the potential safety hazard of operation is overcome.
Drawings
FIG. 1 is a schematic construction flow diagram of a partition construction method in an urban underground comprehensive pipe gallery in the invention;
FIG. 2 is a schematic structural view of the working platform described in embodiment 1;
FIG. 3 is a schematic structural view of an implementation state of the working platform described in embodiment 1;
FIG. 4 is a schematic structural view of a concrete form according to the embodiment;
FIG. 5 is a schematic structural view of the stent described in example 1;
FIG. 6 is a schematic view showing the construction of a state of implementation of the temporary bridge described in example 1;
FIG. 7 is a schematic structural view of the intermediate section described in embodiment 1;
FIG. 8 is a schematic structural view of the orifice segment of example 1;
FIG. 9 is a schematic view showing a lateral structure of an embodiment of the access bridge described in example 1.
Icon: 1-working platform, 11-platform panel, 111-frame, 112-supporting plate, 13-supporting leg, 14-universal roller, 15-connecting rod, 16-reinforcing rod, 17-cross rod, 2-shield prefabricated segment, 3-concrete template, 31-model body, 32-bracket, 33-strip hole, 4-temporary bridge, 41-opening segment, 42-middle segment, 43-slope structural member, 431-supporting frame, 44-support, 441-upright post, 442-supporting rod, 443-bottom plate, 444-stiffening plate, 45-panel supporting component, 451-longitudinal beam, 452-cross beam, 453-sealing plate end, 46-panel, 47-connecting rod, 48-lap plate and 5-working well foundation pit, 6-tunnel.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, a method for constructing a partition plate in an urban underground comprehensive pipe gallery comprises the following steps: s1: constructing the side beam bracket: after the civil engineering is handed over, a side beam bracket is arranged at the installation position of the middle partition plate and used for supporting the middle partition plate; s2: the middle partition plate is transported and installed: transporting the partition wall from outside the tunnel 6 to an installation location and installing it in place, wherein S1 includes the steps of: s1.1: the mobile working platform 1 is arranged: a working platform 1 is erected in the pipe gallery, the working platform 1 comprises roller assemblies which are respectively arranged at two sides along the width direction of the tunnel 6, the two roller assemblies are respectively abutted against the arc-shaped side wall of the shield prefabricated segment 2, and a clear height passing space of 1.0-1.8m is formed at the bottom of the working platform 2; s1.2: the concrete formwork 3 is provided with: two side walls of the tunnel 6 are provided with a suspension type concrete template 3; s1.3: refitting a concrete tank truck: the radial direction of wheels of a concrete tank truck is consistent with the radial direction of the shield prefabricated assembling pipe piece 2 in a mode of inwards inclining a main pin, and a concrete pump is arranged on the concrete tank truck; s1.4: side beam bracket cast-in-place: adopting the modified concrete tank car cast-in-situ side beam bracket; s1.5: curing the concrete; s2 includes the steps of: s2.1: and (4) erecting a temporary bridge: erecting a temporary bridge 4 for connecting tunnel mouths on two sides in a working well foundation pit 5, wherein the temporary bridge 4 is a steel structure assembly; s2.2: and (3) transporting a middle partition plate: transporting the middle partition plate to a mounting position from a feed opening of the working well by adopting a transporting and mounting integrated machine or a truck-mounted crane mounting vehicle; the median septum is installed in place.
The construction method for the partition board in the urban underground comprehensive pipe gallery is designed aiming at all problems encountered in the installation process of the partition board in the shield tunnel, the installation construction method for smoothly transporting and installing the partition board with larger volume and heavier weight in the narrow space of the shield prefabricated assembled segment tunnel is provided, the continuous non-interference proceeding of all processes in the construction of the urban underground comprehensive pipe gallery is realized, a set of continuous construction processes is formed, the construction quality is ensured, the total construction period is shortened, and the potential safety hazard of operation in the installation process of the existing partition board is overcome.
Preferably, by setting up the movable working platform 1 of the space truss type, not only the foundation construction conditions of boundary beams, corbels, bases and the like are provided for the installation of the middle partition plate, but also the foundation construction and other procedures in the tunnel are simultaneously carried out.
Specifically, as shown in fig. 2-3, the working platform 1 includes a platform panel 11, the platform panel 11 includes a frame 111 and a plurality of support plates 112 disposed on the frame 111, a slot adapted to the support plates 112 is disposed on the frame 111, a plurality of support legs 13 are disposed at the bottom of the platform panel 11, the top of each support leg 13 is connected to the platform panel 11, the bottom of each support leg is connected to a roller assembly, the support legs 13 are disposed along the radial direction of the shield prefabricated segment 2, each roller assembly includes two universal rollers 14 transversely disposed along the platform panel 11, each universal roller 14 is correspondingly connected to one support leg 13, a connecting rod 15 is disposed between two adjacent support legs 13 along the length direction of the tunnel 6, at least two reinforcing rods 16 are disposed between the connecting rod 15 and the platform panel 11, the reinforcing rods 16 and the platform panel 11 enclose to form a triangular stable space, a cross bar 17 is further arranged between the two reinforcing bars 16, the cross bar 17 is located at the middle position close to the bottom of the platform panel 11, the universal rollers 14 can roll along the length direction of the shield tunnel 6, and each universal roller 14 is provided with a braking mechanism.
Specifically, the span between the two roller assemblies is A, the A is 3.5-4m, preferably 3.6m, so as to ensure that a passing space with the maximum height B is formed below the platform panel 11, and the B is 1.25m, so as to meet the requirement of smooth passing of equipment and personnel in the shield tunnel 6.
Specifically, the span of platform panel 11 along 6 width direction in tunnel is 4.26m to the realization goes on smoothly when going on to processes such as measurement laying-out, crab-bolt installation of holing, boundary beam reinforcement, template installation of 6 both sides median septum mounted position in tunnel.
Specifically, the frame 111, the legs 14, the connecting rods 15, the reinforcing rods 16 and the cross rods 17 are all steel structural members welded to each other to form an integral structure, and the supporting plate 112 is a wood plate.
Preferably, the concrete tank car refitted by the wheels is used for cast-in-place operation of the suspended concrete formwork 3, so that the concrete quality is guaranteed, the engineering quality is guaranteed, the damage to the prefabricated assembled duct pieces of the shield tunnel 6 is avoided, and the overall engineering quality is guaranteed.
Specifically, as shown in fig. 4-5, concrete form 3 includes support 32 and sets up model body 31 on the support 32, support 32 with model body 31 is close to one side that the section of jurisdiction 2 was assembled in the shield prefabrication respectively with the section of jurisdiction 2 laminating is assembled in the shield prefabrication, support 32 assembles section of jurisdiction 2 channel bolted connection with the shield prefabrication, be provided with the bar hole 33 that is used for with model body 31 connecting bolt on the support 32, the long limit of bar hole 33 sets up along 6 length direction in tunnel.
Specifically, the concrete tank truck enables wheels to be perpendicular to the inner wall of the shield prefabricated assembly duct piece 2 in a mode that a main pin inclines inwards.
Preferably, through setting up steel structure component's suspension bridge 4, for the median septum establishes the passageway of smooth and easy transportation between the operating well to the mounted position, guarantee that the median septum is at the shield construction safety, the steady movement in the prefabricated narrow and small space of assembling section of jurisdiction tunnel 6, steel structure component's suspension bridge simple structure, it is easy to prepare, can satisfy the stable bearing capacity to large-scale median septum in narrow and small space, and installation that can be easier is retrieved and is recycled, be favorable to reducing the engineering total cost in the median septum work progress.
Specifically, as shown in fig. 6 to 9, the suspension bridge 4 includes two opening sections 41 and a plurality of middle sections 42 welded by steel structural sections, each section includes a frame body, a panel 46 is disposed on the frame body, the frame body includes a support 44 and a panel support assembly 45, the support 44 includes a plurality of vertical columns 441 and a plurality of support rods 442 disposed between the adjacent vertical columns 441, the panel support assembly 45 includes a plurality of longitudinal beams 451 disposed along the direction of the tunnel 6 and a cross beam 452 for connecting the longitudinal beams 451, the tops of the vertical columns 441 are welded to the cross beam 452, and the longitudinal beams 451, the cross beam 452, the vertical columns 441 and the support rods 442 are made of steel structural sections respectively.
Specifically, the longitudinal beam 451, the cross beam 452 and the upright post 441 are respectively made of i-steel, the support rod 442 is made of channel steel, the support rod 442 includes a transverse support rod, a longitudinal support rod and an oblique support rod, an end head sealing plate 453 is arranged at an end of the longitudinal beam 451, a through hole for passing through a connecting piece is arranged on the end head sealing plate 453, the connecting piece is preferably a bolt, a bottom plate 443 is arranged at the bottom of the upright post 441, and a stiffening plate 444 is arranged between the bottom plate 443 and the upright post 441.
Specifically, the opening section 41 is two meters long, and the intermediate section 42 is three meters long. The temporary bridge 4 is formed by splicing the tunnel portal sections 41 and the middle sections 42 with the length, for the conventional working well lifting port of 7m × 2.5m of the existing shield tunnel 6, the two split sections can be easily input and/or output from the working well lifting port, the two split sections can be conveniently transported, used and recovered in the limited space of the shield tunnel 6, the number of the middle sections 42 can be adjusted according to the actual distance between the two tunnel ports, the economical temporary bridge which meets the actual construction requirements and can be recycled is built, meanwhile, the number and the distance of the longitudinal beams 451 can be adjusted through a single frame body, the width of the temporary bridge 4 is adjusted, and the temporary bridges with different widths can be conveniently built according to the actual weight of materials and equipment.
Preferably, the top surface of the temporary bridge 4 along the two end surfaces of the tunnel 6 direction is respectively provided with a slope structural member 43, the slope structural member 43 is located at the corner position of the top surface of the temporary bridge 4, and the slope structural member 42 is used for eliminating the height difference between the temporary bridge 4 and the shield prefabrication and assembly segment 2 arc-shaped inner wall.
Specifically, slope structure 43 includes support frame 431, support frame 431 is made by steel structural section and/or reinforcing bar, be provided with panel 46 on the support frame 431, slope structure 43 sets up on entrance to a cave festival section 41 for the difference in height between the arc wall of transition shield tunnel 6 and the temporary bridge 4 further guarantees that the median septum is at safe, the steady movement in the shield prefabrication assembles section of jurisdiction tunnel 6's narrow and small space.
Preferably, the number of the temporary bridges 4 between the two tunnel mouths is two, the two temporary bridges 4 are arranged along the transverse direction of the tunnel 6, the two adjacent temporary bridges 4 are fixedly connected through a connecting rod 47 of a steel structural section, the top of each two adjacent temporary bridges 4 is provided with a lap plate 48, and the lap plates 48 are made of pattern steel plates.
Preferably, the transportation and installation integrated machine or the vehicle-mounted crane installation vehicle is adopted for final installation of the middle partition plate, the installation mode is simple, and time and labor are saved.
The device comprises a conveying and installing integrated machine, and is characterized in that a lifting mechanism, a rotating mechanism and a longitudinal moving mechanism are arranged on the conveying and installing integrated machine, the lifting mechanism is arranged on the rotating mechanism, the rotating mechanism is arranged on the longitudinal moving mechanism, the lifting mechanism is used for jacking the middle partition plate to the upper side of a side beam, the rotating mechanism is used for rotating the middle partition plate to the position along the width direction of a tunnel, and the longitudinal moving mechanism is used for moving the middle partition plate to an installing position.
When the integrated transporting and installing machine is adopted, S2.2 comprises the following steps: s2.2.1: hoisting the middle partition plate to the bracket of the tunnel inner all-in-one machine at a feed opening of the working well by using a crane; s2.2.2: the integrated machine transports the middle partition plate to the front of the installation position by 3.3-3.7m, preferably 3.5m, along the temporary bridge 4; s2.2.3: the lifting mechanism on the integrated machine lifts the middle clapboard to the upper part of the side beam; s2.2.4: the swing mechanism on the all-in-one machine integrally rotates and lifts the lifting mechanism with the middle partition plate until the length direction of the middle partition plate is along the width direction of the tunnel 6; s2.2.5: the longitudinal moving mechanism on the integrated machine moves the middle clapboard lifted to the installation position to a proper position.
When a truck-mounted crane is adopted for mounting the vehicle, S2.2 comprises the following steps: s2.2.1: hoisting a middle partition plate to a mounting vehicle bracket in the tunnel 6 at a feed opening of the working well by using a crane, wherein a vehicle-mounted crane is arranged on the mounting vehicle; s2.2.2: the installation vehicle transports the middle partition plate to the front of the installation position by 1.8-2.2m, preferably 2m, along the temporary bridge; s2.2.3: installing a vehicle-mounted crane on the vehicle to lift the middle partition plate to the upper part of the side beam; s2.2.4: manually rotating the middle partition plate in the hoisting process until the length direction of the middle partition plate is along the width direction of the tunnel; s2.2.5: the truck-mounted crane on the mounting truck is lowered, and the middle partition plate is placed in place.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A partition plate construction method in an urban underground comprehensive pipe gallery comprises the following steps: s1: constructing the side beam bracket: after the civil engineering is handed over, a side beam bracket is arranged at the installation position of the middle partition plate and used for supporting the middle partition plate; s2: the middle partition plate is transported and installed: with intermediate bottom from the tunnel outside transport to the mounted position and install and target in place its characterized in that:
s1 includes the steps of:
s1.1: the mobile working platform is arranged: erecting a working platform in the pipe gallery, wherein the working platform comprises roller assemblies which are respectively arranged at two sides along the width direction of the tunnel, the two roller assemblies are respectively abutted against the arc-shaped side wall of the shield prefabricated assembled pipe piece, and a clear height passing space of 1.0-1.8m is formed at the bottom of the working platform; s1.2: setting a concrete template: arranging suspension type concrete formworks on two side walls of the tunnel; s1.3: refitting a concrete tank truck: the wheel radial direction of a concrete tank truck is consistent with the radial direction of the shield prefabricated assembled segment in a mode of inward inclination of a main pin, and a concrete pump is arranged on the concrete tank truck; s1.4: side beam bracket cast-in-place: adopting the modified concrete tank car cast-in-situ side beam bracket; s1.5: curing the concrete;
s2 includes the steps of:
s2.1: erecting a temporary bridge: erecting a temporary bridge for connecting tunnel mouths on two sides in a working well foundation pit, wherein the temporary bridge is a steel structure assembly; s2.2: and (3) transporting a middle partition plate: and (4) transporting the middle partition plate to a mounting position from a feed opening of the working well by adopting a transporting and mounting integrated machine or a truck-mounted crane mounting vehicle, and mounting the middle partition plate in place.
2. The method for constructing the partition board in the urban underground comprehensive pipe gallery according to claim 1, wherein in S1.1, the working platform comprises a platform panel, a plurality of support legs are arranged at the bottom of the platform panel, the tops of the support legs are connected with the platform panel, the bottoms of the support legs are connected with the roller assemblies, and the support legs are arranged along the radial direction of the shield prefabricated assembled segments.
3. The method for constructing the partition in the urban underground comprehensive pipe gallery according to claim 2, wherein the platform panel comprises a frame and a plurality of supporting plates arranged on the frame, and the frame is provided with clamping grooves matched with the supporting plates.
4. The method for constructing the partition board in the urban underground comprehensive pipe gallery according to claim 1, wherein in S1.2, the concrete formwork comprises a support and a model body arranged on the support, one side of the support and one side of the model body, which are close to the shield prefabricated assembled duct piece, are respectively attached to the shield prefabricated assembled duct piece, the support is connected with a channel bolt of the shield prefabricated assembled duct piece, a strip-shaped hole for being connected with the model body through the bolt is arranged on the support, and the long edge of the strip-shaped hole is arranged along the length direction of the tunnel.
5. The method for constructing the partition in the urban underground comprehensive pipe gallery according to claim 1, wherein in S2.1, slope structural members are respectively arranged on the surfaces of the two ends of the top surface of the temporary bridge along the tunnel direction, the slope structural members are located at the corners of the top surface of the temporary bridge, and the slope structural members are used for eliminating the height difference between the temporary bridge and the arc-shaped inner walls of the shield prefabricated assembled segments.
6. The method for constructing the partition in the urban underground comprehensive pipe gallery according to claim 5, wherein the top surface of the access bridge is flush with the bottom surface of the tunnel, the access bridge comprises two opening sections and a plurality of middle sections, the opening sections are detachably connected with the middle sections, and the middle sections adjacent to each other in the tunnel direction are detachably connected.
7. The method for constructing the partition in the urban underground comprehensive pipe gallery according to claim 6, wherein when there are two temporary bridges, all the temporary bridges are arranged in the width direction of the tunnel, the adjacent temporary bridges are fixedly connected by steel structural sections, and the top surfaces of the adjacent temporary bridges are provided with lap plates.
8. The method as claimed in claim 1, wherein in S2.2, the transportation and installation integrated machine is provided with a lifting mechanism, a swing mechanism and a longitudinal moving mechanism, the lifting mechanism is disposed on the swing mechanism, the swing mechanism is disposed on the longitudinal moving mechanism, the lifting mechanism is used for lifting the middle partition plate to above the installation position, the swing mechanism is used for rotating the middle partition plate, and the longitudinal moving mechanism is used for moving the middle partition plate to the installation position.
9. The method for constructing the partition board in the urban underground comprehensive pipe gallery according to claim 8, wherein when the transportation and installation integrated machine is adopted, the S2.2 comprises the following steps:
s2.2.1: hoisting the middle partition plate to the bracket of the tunnel inner all-in-one machine at a feed opening of the working well by using a crane;
s2.2.2: the integrated machine conveys the middle clapboard to the front of the installation position by 3.3-3.7m along the temporary bridge;
s2.2.3: the lifting mechanism on the integrated machine lifts the middle clapboard to the upper part of the side beam;
s2.2.4: the swing mechanism on the all-in-one machine integrally rotates and lifts the lifting mechanism with the middle partition plate until the length direction of the middle partition plate is along the width direction of the tunnel;
s2.2.5: the longitudinal moving mechanism on the integrated machine moves the middle clapboard lifted to the installation position to a proper position.
10. The method for constructing the partition board in the urban underground comprehensive pipe gallery according to claim 1, wherein when a truck-mounted crane is adopted for mounting the vehicle, S2.2 comprises the following steps:
s2.2.1: hoisting a middle partition plate to a mounting vehicle bracket in the tunnel at a feed opening of the working well by using a crane, wherein a vehicle-mounted crane is arranged on the mounting vehicle;
s2.2.2: the mounting vehicle transports the middle partition plate to the front 2m of the mounting position along the temporary bridge;
s2.2.3: installing a vehicle-mounted crane on the vehicle to lift the middle partition plate to the upper part of the side beam;
s2.2.4: manually rotating the middle partition plate in the hoisting process until the length direction of the middle partition plate is along the width direction of the tunnel;
s2.2.5: the truck-mounted crane on the mounting truck is lowered, and the middle partition plate is placed in place.
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| CN202010186136.1A CN111271090B (en) | 2020-03-17 | 2020-03-17 | Construction method for partition plate in urban underground comprehensive pipe gallery |
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| CN202010186136.1A CN111271090B (en) | 2020-03-17 | 2020-03-17 | Construction method for partition plate in urban underground comprehensive pipe gallery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1247878C (en) * | 2003-04-28 | 2006-03-29 | 上海市隧道工程轨道交通设计研究院 | Single-pipe circular tunnel two-layer structure construction method |
| CN107326930A (en) * | 2017-08-10 | 2017-11-07 | 明达地下空间科技发展有限公司 | A kind of live rapidform machine of Urban Underground pipe gallery and its method of work |
| CN108343451B (en) * | 2018-04-12 | 2024-04-26 | 北京市热力工程设计有限责任公司 | Connection structure and method for shield tunnel segment and bracket |
| CN208605197U (en) * | 2018-08-08 | 2019-03-15 | 湖北省城建设计院股份有限公司 | A kind of building structure that subway driving section is built together with Urban Underground pipe gallery |
| CN110017024A (en) * | 2019-04-22 | 2019-07-16 | 上海建工一建集团有限公司 | The construction method of the horizontal girder steel of contrary sequence method basement |
| CN110617079A (en) * | 2019-10-28 | 2019-12-27 | 中铁二院工程集团有限责任公司 | Shield comprehensive pipe gallery pipeline installation shed frame system |
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