CN114590365A - UHPC pipe-rod grid structure floating airport module and floating airport - Google Patents
UHPC pipe-rod grid structure floating airport module and floating airport Download PDFInfo
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- CN114590365A CN114590365A CN202210185020.5A CN202210185020A CN114590365A CN 114590365 A CN114590365 A CN 114590365A CN 202210185020 A CN202210185020 A CN 202210185020A CN 114590365 A CN114590365 A CN 114590365A
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 124
- 238000007667 floating Methods 0.000 title claims abstract description 76
- 239000010410 layer Substances 0.000 claims abstract description 115
- 238000012546 transfer Methods 0.000 claims abstract description 64
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000002344 surface layer Substances 0.000 claims abstract description 6
- 210000002435 tendon Anatomy 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
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- 239000006261 foam material Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000004513 sizing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/50—Vessels or floating structures for aircraft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
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Abstract
The invention relates to a UHPC pipe-rod net rack structure floating airport module, which comprises a UHPC base layer positioned at the lower part and a steel plate pavement layer positioned at the upper part; the UHPC foundation layer comprises a top pavement ring beam, a plurality of middle force transfer ring beams and a bottom weighting ring beam, each layer of ring beam is prepared by UHPC, adjacent ring beams are spliced and connected through UHPC pipes, a prestressed hole is reserved at the intersection of the ring beams and the UHPC pipes, each layer of ring beams and the UHPC pipes are spliced and assembled and connected, prestressed reinforcements are tensioned in the prestressed hole and grouting, pouring and sealing treatment are carried out at the interface, and the integrity of the structure is ensured; the ring beam structure is characterized by further comprising splicing parts which are arranged on two sides of each layer of ring beam and are matched with each other. According to the invention, a floating airport on the sea is formed by assembling a plurality of floating airport modules, and the lower UHPC base layer can provide enough compressive strength, bending strength and impact strength and excellent durability; the upper part is a steel plate road surface layer which has the properties of impact resistance, high temperature resistance, high toughness, no deformation, magnetism resistance, corrosion resistance and bulletproof property.
Description
Technical Field
The invention belongs to the technical field of ocean engineering facilities, and particularly relates to a floating airport module with a UHPC pipe-rod grid structure and a floating airport.
Background
Compared with the traditional airport, the offshore floating airport has the characteristics of wide application range, small limitation by terrain, certain maneuverability and the like, and particularly has potential advantages and huge development prospects in the aspects of maintaining ocean ownership, developing ocean scientific research, developing ocean economy and the like. Therefore, the construction of floating airports on the sea will play an important role in competition in the world.
At present, main structures of offshore airports and ultra-large ocean platforms are all steel structures, the structures are prone to corrosion, high in maintenance cost, poor in long-term durability and the like under the ocean environment, and in ultra-large ocean floating structures, extremely high maintenance cost is needed when steel is used as a main material for construction. On the other hand, the long-plate (flat) floating airport displayed in the existing design has the problem of insufficient rigidity, and under the action of wave current, the structure is greatly deformed and even distorted along with waves, so that the potential safety hazard is large, and the whole rigidity also needs to be improved by taking measures on the structure. The construction of the offshore floating airport needs to consider the influence of construction problems, guarantee a faster construction period and more convenient construction conditions, and cannot damage the marine ecology, so that the offshore floating airport provides a greater test for the construction of the traditional floating airports.
With the emergence and application of ultra-high performance cement-based materials (UHPC), the materials immediately gain favor of the structural engineering industry, especially the ultra-high strength and high toughness of the materials, so that the materials have the capability of replacing steel structures or members in many occasions, but the UHPC is not applied to the field of offshore airports at present.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a UHPC pipe-rod grid structure floating airport module and a floating airport, in order to overcome the defects existing in the prior art, wherein a floating airport on the sea can be formed by assembling a plurality of floating airport modules, and the lower part of the floating airport is an Ultra High Performance Concrete (UHPC) base layer, so that the excellent physical and mechanical properties such as sufficient compressive strength, bending strength and impact strength can be ensured to be provided, and the excellent durability can be maintained under the marine environmental condition; the upper part is a steel plate road surface layer, and deck steel used by the current aircraft carrier is adopted, so that the aircraft carrier has the properties of impact resistance, high temperature resistance, high toughness, no deformation, magnetism resistance, corrosion resistance, bullet resistance and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a UHPC pipe-pole grid-structured floating airport module comprising a UHPC base layer at a lower portion and a steel deck pavement layer at an upper portion;
the UHPC foundation layer comprises a top pavement ring beam, a plurality of middle force transfer ring beams and a bottom weighting ring beam, each layer of ring beam is prepared by UHPC, adjacent ring beams are connected in an inserting way through UHPC pipes, a prestressed hole is reserved at the intersection of the ring beams and the UHPC pipes, each layer of ring beams and the UHPC pipes are firstly connected in an inserting way, prestressed reinforcements are stretched in the prestressed hole, grouting, pouring and sealing treatment are carried out at the interface, and the integrity of the structure is ensured; the top pavement ring beam comprises a pavement bracket and a pavement ring beam, the steel plate pavement layer is fixedly arranged on the upper surface of the pavement bracket, the pavement ring beam is fixedly arranged on the lower part of the pavement bracket, and a pipeline connecting hole for connecting the UHPC pipe is formed in the pavement ring beam; the force transfer ring beam comprises an upper layer of force transfer ring beam and a lower layer of force transfer ring beam which are fixedly connected, and pipeline connecting holes for connecting the UHPC pipes are formed in the upper layer of force transfer ring beam and the lower layer of force transfer ring beam; the bottom layer weight ring beam is of a single-layer ring beam structure, adopts a solid structure, and ensures that the whole floating center of the structure is higher than the gravity center;
the floating airport module further comprises splicing parts which are arranged on two sides of each layer of ring beam and are mutually matched, and splicing assembly between the adjacent floating airport modules is realized.
In the scheme, the road surface plate of the steel plate road surface layer is made of high-strength and high-toughness steel plates, and the steel plates and the road surface plate bracket are provided with corresponding mounting holes and connected through high-strength bolts.
In the above scheme, the steel plate pavement layer below adopts the I-shaped steel beam to support, the I-shaped steel beam welds in the lower surface of steel sheet, and is located between the crossbeam of guidance tape board bracket.
In the scheme, the pavement ring beam is connected with the force transfer ring beam below the pavement ring beam through the small-aperture UHPC pipes which are arranged in a dense vertical mode, the bottom layer weight ring beam is connected with the force transfer ring beam above the bottom layer weight ring beam through the small-aperture UHPC pipes which are arranged in a dense vertical mode, the rest force transfer ring beams in the middle are connected through the large-aperture UHPC pipes which are arranged in a vertical mode, and the large-aperture UHPC pipes and the small-aperture UHPC pipes are distributed in a staggered mode, so that the stress of the upper layer and the stress of the lower layer are transferred in a staggered mode.
In the scheme, the diameter of the small-aperture UHPC pipe is 300-600 mm, and the diameter of the large-aperture UHPC pipe is 600-1500 mm.
In the scheme, the compressive strength of the UHPC pipe material is more than 120MPa, the breaking strength is more than 20MPa, and the interior of the UHPC pipe is filled with the light foaming material.
In the scheme, prestressed pore channels are arranged in the transverse reinforcing ribs of the pavement ring beam, the upper-layer force transfer ring beam, the lower-layer force transfer ring beam and the bottom-layer ballast ring beam, and the prestressed reinforcements are tensioned by prestressed reinforcement tensioning anchors so as to enhance the rigidity of the ring beam.
In the scheme, the top pavement ring beam and the force transmission ring beam are both of UHPC hollow structures, and longitudinal and transverse reinforcing rib plates are arranged inside the top pavement ring beam, so that the integral rigidity is ensured.
In the scheme, the splicing component comprises a tenon-and-mortise structure, the tenon-and-mortise structure comprises a connecting concave hole arranged on one side of the floating airport module and a connecting bulge arranged on the other side of the floating airport module, and the connecting bulge can be inserted into the connecting concave hole to be assembled with the connecting concave hole; the splicing component also comprises end prestressed tendon tensioning holes arranged at the upper end and the lower end of the connecting concave hole/connecting bulge and side prestressed tendon tensioning holes arranged at the left side and the right side; the single floating airport module has enough buoyancy to support self floating, is pulled to a designated position by a transport ship after being assembled, relies on a dynamic positioning system to realize preliminary tenon-and-mortise butt joint between the modules, and carries out tensioning prestressed tendon anchoring and grouting pouring sealing in an end prestressed tendon tensioning hole and a side prestressed tendon tensioning hole through a prestressed tendon tensioning anchorage device after the preliminary tenon-and-mortise butt joint is completed.
Correspondingly, the invention also provides a UHPC pipe-rod net rack structure floating airport which is formed by splicing and assembling the UHPC pipe-rod net rack structure floating airport modules.
The invention has the beneficial effects that:
1. the invention adopts the UHPC pipe-rod grid structure to replace a steel structure to build the offshore floating airport, can obtain excellent seawater corrosion resistance while providing enough physical and mechanical properties, and can obviously prolong the maintenance period of the airport module, thereby reducing the later maintenance cost.
2. Compared with the traditional long-plate offshore floating airport, the single module is mainly in rigid connection, the connection part of the modules adopts semi-rigid connection, the modules are combined rigidly and flexibly, the integral rigidity of the modules is high, the stability of the integral structure is high, and the capacity of coping with complex wind, wave and current loads is strong.
3. Two layers of the upper end and two layers of the lower end of the UHPC base layer are densely and vertically arranged by adopting UHPC pipes with smaller calibers so as to disperse the load of the upper part and the lower part to more stress points, and the middle layer adopts the UHPC pipe with larger calibers so as to stagger and transfer the stress of the upper layer and the lower layer, and simultaneously, the UHPC pipe with larger calibers can provide larger buoyancy. The vertical connection between each layer of ring beams is realized by arranging prestressed ducts in the reinforcing ribs of the ring beams and stretching prestressed reinforcing steel bars to enhance the integral rigidity.
4. The UHPC pipe-rod grid structure floating airport module adopts a main structure that the pipes and the rod members are made of UHPC, and the UHPC pipe-rod grid structure floating airport module is a structural member and a buoyancy source, thereby achieving two purposes at one stroke; the prefabricated assembly construction period is short, and factor of safety is high, avoids the work progress to cause great pollution to marine environment. Each component of the airport module adopts a prefabricated component, after splicing and assembling are completed, a single module can be hoisted and transported to the sea surface, and the combination of the modules can be connected by means of mortise and tenon structure interlocking and post-tensioning prestress steel strands on the sea surface through a traction ship, so that the integral integrity of the structure can be ensured.
5. The invention mainly adopts the ultra-high performance cement-based material (UHPC), is manufactured by the prior pouring forming and centrifugal forming processes, and has the characteristics of mature technology, wide distribution of production enterprises, controllable product quality, adjustable product specification and the like.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the overall structure of a UHPC pipe-pole grid structure floating airport module of the present invention;
FIG. 2 is a schematic diagram of the structure of the UHPC base layer of the floating airport module of FIG. 1;
FIG. 3 is a schematic illustration of a deck plate bracket configuration for the top deck track ring beam of the UHPC base layer of FIG. 2;
FIG. 4 is a schematic illustration of a pavement ring structure for a top layer pavement ring in the UHPC base layer of FIG. 2;
FIG. 5 is a schematic view of the upper transfer ring beam configuration of the transfer ring beam in the UHPC base layer of FIG. 2;
FIG. 6 is a schematic view of the lower force transfer ring configuration of the force transfer ring in the UHPC base layer of FIG. 2;
FIG. 7 is a schematic view of a laminated heavy gird construction of the midsole of the UHPC base layer of FIG. 2;
FIG. 8 is a schematic structural view of a steel plate roadway surface layer of the floating airport module of FIG. 1;
figure 9 is a view of the configuration of the connecting recesses provided on one side of the floating airport module of figure 1;
figure 10 is a view of the configuration of the attachment lugs provided on the other side of the floating airport module of figure 1;
FIG. 11 is a view of the floating airport module end tendon tensioning hole configuration of FIG. 1;
FIG. 12 is a schematic illustration of a floating airport module connection;
FIG. 13 is a diagram showing the connection between a large-diameter transfer ring beam and a large-diameter UHPC pipe of two layers of transfer ring beams according to the embodiment of the present invention;
figure 14 is a floating airport sizing diagram in an embodiment of the present invention.
In the figure: 10. a top pavement ring beam; 11. a pavement panel bracket; 111. a pavement slab carrier frame; 112. an I-beam; 12. a pavement ring beam;
20. a force transfer ring beam; 21. an upper force transfer ring beam; 22. a lower force transfer ring beam; 211. an end longitudinal beam; 212. a middle longitudinal beam; 213. a transverse beam; 214. transverse reinforcing ribs; 23. an upper force transfer ring beam; 24. a lower force transfer ring beam;
30. a bottom layer weight ring beam;
40. a steel plate pavement; 41. a pavement slab; 42. a pavement slab fixing bolt;
51. a small-bore UHPC tube; 52. a large-diameter UHPC pipe; 53. a small-caliber UHPC connecting hole; 54. a large-caliber UHPC connecting hole;
60. a breakwater;
71. connecting concave holes; 72. a connecting projection; 73. tensioning holes for the end prestressed tendons; 74. the side prestressed tendon stretches the hole; 75. stretching the anchorage device by the prestressed tendon; 76. and a rubber cushion layer.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, a UHPC pipe grid structure floating airport module according to a preferred embodiment of the present invention includes a UHPC foundation layer located at a lower portion and a steel plate pavement layer 40 located at an upper portion, the UHPC foundation layer includes a top pavement loop beam 10, a middle two-layer force transfer loop beam 20 and a bottom ballast loop beam 30, each layer of loop beam is made of UHPC, adjacent loop beams are connected by plugging UHPC pipes, a horizontal prestressed hole is reserved at a junction of the loop beam and the UHPC pipe, each layer of loop beam and the UHPC pipe are first connected by plugging, prestressed reinforcements are inserted into the prestressed hole and tensioned (see fig. 13), and grouting, pouring and sealing treatment are performed at the junction to ensure structural integrity. The UHPC base layer is a source of module buoyancy, a supporting structure system and a rigidity guarantee system.
The track surface ring beam 12 is connected with the force transfer ring beam 20 below the track surface ring beam by adopting the small-caliber UHPC pipes 51 which are arranged densely and vertically, the bottom layer weight ring beam 30 is connected with the force transfer ring beam 20 above the bottom layer weight ring beam by adopting the small-caliber UHPC pipes 51 which are arranged densely and vertically, the rest force transfer ring beams 20 in the middle are connected by adopting the large-caliber UHPC pipes 52 which are arranged vertically, and the large-caliber UHPC pipes 52 and the small-caliber UHPC pipes 51 are distributed in a staggered way, so that the stress of the upper layer and the stress of the lower layer are transferred in a staggered way. Two layers of the upper end and two layers of the lower end of the UHPC base layer are densely and vertically arranged by adopting UHPC pipes with smaller calibers so as to disperse the load of the upper part and the lower part to more stress points, the middle layer adopts the UHPC pipe with larger calibers so as to stagger and transfer the stress of the upper layer and the lower layer, and meanwhile, the UHPC pipe 52 with larger calibers can provide larger buoyancy. The vertical connection between each layer of ring beams is realized by arranging prestressed ducts in the reinforcing ribs of the ring beams and stretching prestressed reinforcing steel bars to enhance the integral rigidity.
In this embodiment, the UHPC base layer is formed by combining four layers of UHPC pipe networks. The first layer is a top pavement ring beam 10, the top pavement ring beam 10 comprises a pavement plate bracket 11 and a pavement ring beam 12, the steel plate pavement layer 40 is fixedly arranged on the upper surface of the pavement plate bracket 11, and the pavement ring beam 12 is fixedly arranged on the lower part of the pavement plate bracket 11. As shown in fig. 3, the pavement slab carrier 11 is composed of two end longitudinal beams 211 and a transverse beam 213 installed between the longitudinal beams. The dimension of the pavement slab bracket frame 111 is slightly larger than that of the steel plate layer, so that the pavement slab bracket frame is isolated from the seawater environment, and the seawater is prevented from causing corrosion. As shown in fig. 4, the ballast ring beam 12 is composed of end longitudinal beams 211, a middle longitudinal beam 212, a transverse beam 213 and a transverse reinforcing rib 214, and the ballast ring beam 12 is provided with small-caliber UHPC connection holes 53. The pavement slab bracket 11 and the pavement ring beam 12 can be connected through the embedded screw bolts, and the pavement ring beam 12 plays a role in supporting the pavement slab bracket 11 and can uniformly transmit the upper load to the lower part.
The second layer is a force transfer ring beam 20, and the force transfer ring beam 20 comprises an upper layer of force transfer ring beam 21 and a lower layer of force transfer ring beam 22 which are fixedly connected. As shown in fig. 5, the upper layer of force transfer ring beam 21 has the same structure as the track surface ring beam 12, and is composed of an end longitudinal beam 211, a middle longitudinal beam 212, a transverse beam 213, and a transverse reinforcing rib 214, and the upper layer of force transfer ring beam 21 is provided with a small-caliber UHPC connection hole 53 corresponding to the track surface ring beam 12 for connecting the small-caliber UHPC pipe 51. As shown in fig. 6, the overall size of the lower force transfer ring beam 22 is the same as that of the upper force transfer ring beam 21, so as to ensure the overall regularity of the structure, the lower force transfer ring beam 22 is also composed of end longitudinal beams 211, middle longitudinal beams 212, transverse beams 213 and transverse reinforcing ribs 214, and the lower force transfer ring beam 22 is provided with a large-caliber UHPC connection hole 54 for connecting a large-caliber UHPC pipe 52. The two layers of force transfer ring beams can be connected through a pre-hole tensioning prestressed tendon.
The third layer is also a force transfer ring beam 20, which comprises an upper layer of force transfer ring beam 23 and a lower layer of force transfer ring beam 24 which are fixedly connected, the structure of the force transfer ring beam 23 is the same as that of the force transfer ring beam 22, and the structure of the force transfer ring beam 24 is the same as that of the force transfer ring beam 21, so that the large-caliber UHPC connecting holes 54 of the force transfer ring beam 20 between the second layer and the third layer are aligned with each other, and the layers are conveniently and vertically connected.
The fourth layer is the bottom layer ring-pressing beam 30, as shown in fig. 7, the bottom layer ring-pressing beam 30 is a single-layer ring-beam structure, the overall structure of the bottom layer ring-pressing beam is similar to that of the upper layer force transfer ring beam 21, and the bottom layer ring-pressing beam is also composed of end longitudinal beams 211, middle longitudinal beams 212, transverse beams 213 and transverse reinforcing ribs 214, and the bottom layer ring-pressing beam 30 is provided with small-caliber UHPC connection holes 53 which are connected with the third layer force transfer ring beam 20 through small-caliber UHPC pipes 51. The bottom layer weight ring beam 30 adopts a solid structure, and ensures that the whole floating center position of the structure is higher than the gravity center, so that the whole gravity center of the lower structure has more stable resistance when facing the action of ocean waves while ensuring the bearing capacity. The top pavement ring beam 10 and the force transfer ring beam 20 are both of UHPC hollow structures, and longitudinal and transverse reinforcing rib plates are arranged inside the top pavement ring beam, so that the integral rigidity is ensured.
As shown in fig. 8, the pavement slab 41 of the steel slab pavement layer 40 is made of a high-strength and high-toughness steel slab, and the steel slab and the pavement slab bracket 11 are provided with corresponding mounting holes, and the steel slab and the pavement slab bracket are connected through high-strength pavement slab fixing bolts 42, so that the steel slab is convenient to replace. The steel plate pavement layer 40 is supported by the steel I-beam 112, the steel I-beam 112 is welded on the lower surface of the steel plate and is positioned between the cross beams of the pavement slab bracket 11, so that the large pressure is borne, the distortion is avoided, the whole weight is not increased, and the strength is increased. The steel plate pavement layer 40 adopts a high-strength high-toughness steel plate and an I-shaped steel beam 112, so that the stability and the shock resistance of the runway can be ensured when the airplane lands, and the effect of increasing the strength is achieved. The two sides of the steel plate road surface layer 40 are provided with the wave blocking plates 60, so that the airport is not influenced by seawater during working.
The overall shape of the floating airport is a cuboid, and the floating airport modules are divided into small cuboid modules with the same size at certain intervals, and therefore the floating airport modules further comprise splicing parts which are arranged on two sides of each layer of ring beams and are mutually adaptive, and splicing assembly between the adjacent floating airport modules is achieved. As shown in fig. 9-12, the splicing parts include a mortise and tenon structure, the mortise and tenon structure includes a connection concave hole 71 disposed at one side of the floating airport module and a connection protrusion 72 disposed at the other side, and the connection protrusion 72 can be inserted into the connection concave hole 71 to be assembled therewith; the splicing member further includes end tendon tensioning holes 73 provided at the upper and lower ends of the connecting concave hole 71/connecting protrusion 72 and side tendon tensioning holes 74 on the left and right sides. The single floating airport module has enough buoyancy to support self floating, the prefabricated part is assembled and completed on land according to the structural design of each module, the assembly is pulled to a designated position by a transport ship after being completed, the preliminary tenon-and-mortise butt joint between the modules is realized by a dynamic positioning system, the prestressed tendon tensioning anchorage device 75 is used for tensioning the prestressed tendon in the end prestressed tendon tensioning hole 73 and the side prestressed tendon tensioning hole 74 after the preliminary tenon-and-mortise butt joint is completed, grouting and pouring sealing treatment is carried out at the joint, and the integrity of the whole structure is ensured.
Further optimization, prestressed pore channels are arranged in the transverse reinforcing ribs 214 of the pavement ring beam 12, the upper-layer force transfer ring beam 21, the lower-layer force transfer ring beam 22 and the bottom-layer weighting ring beam 30, and the prestressed reinforcements are tensioned by prestressed reinforcement tensioning anchors 75 to enhance the rigidity of the ring beams.
Further optimizing, the diameter of the small-aperture UHPC pipe is 300-600 mm, and the diameter of the large-aperture UHPC pipe is 600-1500 mm. The compressive strength of the UHPC pipe material is more than 120MPa, the breaking strength is more than 20MPa, the prefabricated UHPC pipe is a main source of buoyancy and is also a main structural framework, and light foaming materials such as EPS and the like are filled in the UHPC pipe to ensure the light weight, the water tightness and the reliability.
Further optimize, float airport module junction and set up the rubber cushion 76 of certain thickness, when suffering the ocean wave effect, rubber cushion 76 can play the cushioning effect, also makes simultaneously can have little activity space between the module, avoids stress too concentrated.
Correspondingly, the invention also provides a UHPC pipe-rod net rack structure floating airport which is formed by splicing and assembling the UHPC pipe-rod net rack structure floating airport modules. The design of the UHPC pipe-rod grid structure floating airport comprises the following contents:
step 1: overall dimensional design
The bulk size of a marine floating airport is determined by the length of the airstrip. Different aircrafts have different requirements on the runway, so that the grade of the flight area is divided for distinction, corresponding parameters are selected according to the different requirements on the runway when the runway is designed, the grade of the flight area is mainly divided into a number part and a letter part, different combination modes have different parameter requirements, and corresponding data are shown in a table 1.
The level of the flight area of most of the conventional airports in China is more than 4D. The floating airport flight area designed by the embodiment refers to 4D level standard, the length of the selected runway is 2000m, the width of the airplane runway is 50m, and the requirement of taking off and landing of a common medium-sized passenger plane can be met.
TABLE 1 runway parameters
A safety belt is attached to ensure safety. The safety belts are divided into runway end safety belts and side safety belts according to the length and width directions of the runway. The side safety belt extends from the central line to two sides in the width direction of the runway by a certain distance, and no other obstacles are arranged in the region of the distance. The runway end safety belt mainly avoids the situation that the airplane rushes out of the runway in the taking-off and landing processes, namely, the safety area is formed by lengthening a distance along the length direction of the runway.
Considering that the offshore taking-off and landing operation is more dangerous than the land, the runway end safety belt extends outwards by 200m from two ends of the runway respectively, and the width of the side safety belt is selected to be 25m, namely the side safety belt is widened by 25m from the centerline of the runway to two sides. Finally, the size of the floating airport at sea is defined as 2400m long and 100m wide, as shown in fig. 13.
Step 2: modular design
The total size of the floating airport is 2400m long and 100m wide, the splicing among modules and the stability of a single module are considered, the size of the single module is 200m long and 100m wide by combining the existing production conditions, the inside of the module is spliced and assembled by prefabricated components, and the specific parameter table is detailed in table 2.
TABLE 2 parameter table of module component of floating airport
As can be seen from the above table, the maximum displacement of a single module is 222346.5 × 103m3Then the net buoyancy that the structure can provide is 222346.5 x 103-169370.5＝52994×103And (kg). In the quiescent state, from FFloating body＝GArticle (A)＝ρWater (W)VRow boardg，VRow board＝VRing beam+VSmall-bore UHPC pipe+VLarge-caliber UHPC pipeThe draft h is 19.6m, the total height of the module is 37m, the distance from the airport pavement to the water surface is 17.4m, and the module can provide enough buoyancy to bear the weight of various airport facilities and take off, land and park the airplanes, so that the normal operation of the airport is maintained.
While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A UHPC pipe-pole grid-structured floating airport module, comprising a UHPC base layer at a lower portion and a steel plate roadway surface layer at an upper portion;
the UHPC foundation layer comprises a top pavement ring beam, a plurality of middle force transfer ring beams and a bottom weighting ring beam, each layer of ring beam is prepared by UHPC, adjacent ring beams are connected in an inserting way through UHPC pipes, a prestressed hole is reserved at the intersection of the ring beams and the UHPC pipes, each layer of ring beams and the UHPC pipes are firstly connected in an inserting way, prestressed reinforcements are stretched in the prestressed hole, grouting, pouring and sealing treatment are carried out at the interface, and the integrity of the structure is ensured; the top pavement ring beam comprises a pavement bracket and a pavement ring beam, the steel plate pavement layer is fixedly arranged on the upper surface of the pavement bracket, the pavement ring beam is fixedly arranged on the lower part of the pavement bracket, and a pipeline connecting hole for connecting the UHPC pipe is formed in the pavement ring beam; the force transfer ring beam comprises an upper layer of force transfer ring beam and a lower layer of force transfer ring beam which are fixedly connected, and pipeline connecting holes for connecting the UHPC pipes are formed in the upper layer of force transfer ring beam and the lower layer of force transfer ring beam; the bottom layer weight ring beam is of a single-layer ring beam structure, adopts a solid structure, and ensures that the whole floating center of the structure is higher than the gravity center;
the floating airport module further comprises splicing parts which are arranged on two sides of each layer of ring beam and are mutually matched, and splicing assembly between the adjacent floating airport modules is realized.
2. The UHPC pipe-rod grid structure floating airport module of claim 1, wherein the pavement slab of the steel slab pavement layer is made of high-strength and high-toughness steel plates, and the steel plates and the pavement slab brackets are provided with corresponding mounting holes and connected through high-strength bolts.
3. The UHPC pipe-pole grid structure floating airport module of claim 2, wherein the steel deck roadway floor is supported below with i-beams welded to the lower surface of the steel deck and between the cross beams of the roadway deck brackets.
4. The UHPC pipe-rod grid structure floating airport module of claim 1, wherein the pavement ring beam is connected with the force transfer ring beam below the pavement ring beam by adopting small-aperture UHPC pipes which are arranged densely and vertically, the bottom layer weight ring beam is connected with the force transfer ring beam above the bottom layer weight ring beam by adopting small-aperture UHPC pipes which are arranged densely and vertically, the rest force transfer ring beams in the middle are connected by adopting large-aperture UHPC pipes which are arranged vertically, and the large-aperture UHPC pipes and the small-aperture UHPC pipes are distributed in a staggered way, so that the stress of the upper layer and the stress of the lower layer are transferred in a staggered way.
5. The UHPC pipe-rod grid structure floating airport module of claim 4, wherein the diameter of the small-aperture UHPC pipe is 300-600 mm, and the diameter of the large-aperture UHPC pipe is 600-1500 mm.
6. The UHPC pipe-rod grid structure floating airport module of claim 1 or 5, wherein the compressive strength of the UHPC pipe material is above 120MPa, the breaking strength is above 20MPa, and the interior of the UHPC pipe is filled with a lightweight foam material.
7. The UHPC pipe-rod grid structure floating airport module of claim 1, wherein prestressed porches are arranged inside the transverse reinforcing ribs of the pavement ring beam, the upper layer force transfer ring beam, the lower layer force transfer ring beam and the bottom layer weight ring beam, and the prestressed reinforcements are tensioned by an anchorage through prestressed reinforcements to enhance the rigidity of the ring beams.
8. The UHPC pipe-rod grid structure floating airport module of claim 1, wherein the top pavement ring beam and the force transmission ring beam are both UHPC hollow structures, and longitudinal and transverse reinforcing ribs are arranged inside the top pavement ring beam to ensure the integral rigidity.
9. The UHPC pipe-rod rack structure floating airport module according to claim 1, wherein the splicing part comprises a mortise and tenon structure comprising a connection recess provided at one side of the floating airport module and a connection protrusion at the other side, the connection protrusion being inserted into the connection recess to be assembled therewith; the splicing component also comprises end prestressed tendon tensioning holes arranged at the upper end and the lower end of the connecting concave hole/connecting bulge and side prestressed tendon tensioning holes at the left side and the right side; the single floating airport module has enough buoyancy to support self floating, is pulled to a designated position by a transport ship after being assembled, relies on a dynamic positioning system to realize preliminary tenon-and-mortise butt joint between the modules, and carries out tensioning prestressed tendon anchoring and grouting pouring sealing in an end prestressed tendon tensioning hole and a side prestressed tendon tensioning hole through a prestressed tendon tensioning anchorage device after the preliminary tenon-and-mortise butt joint is completed.
10. A UHPC pipe-pole grid structure floating airport, characterized in that the floating airport is assembled by splicing the UHPC pipe-pole grid structure floating airport modules according to any one of claims 1 to 9.
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| CN202210185020.5A CN114590365A (en) | 2022-02-28 | 2022-02-28 | UHPC pipe-rod grid structure floating airport module and floating airport |
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| CN202210185020.5A CN114590365A (en) | 2022-02-28 | 2022-02-28 | UHPC pipe-rod grid structure floating airport module and floating airport |
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| CN214241166U (en) * | 2021-01-07 | 2021-09-21 | 武汉理工大学 | Anti-rolling UHPC pipe-box combined floating structure |
| CN113638386A (en) * | 2021-08-19 | 2021-11-12 | 中交第三航务工程局有限公司 | Offshore wind power single pile socketed foundation construction is with assembled platform |
| CN114027235A (en) * | 2021-09-10 | 2022-02-11 | 中山市武汉理工大学先进工程技术研究院 | Prefabricated UHPC (ultra high performance polycarbonate) fishing ground net cage and construction method thereof |
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2022
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5906171A (en) * | 1995-01-30 | 1999-05-25 | Kvaerner Maritime As | Floating runway |
| KR20170113028A (en) * | 2017-01-31 | 2017-10-12 | (주)비오씨앤티 | Heliport |
| CN108457148A (en) * | 2018-03-21 | 2018-08-28 | 中国冶集团有限公司 | A kind of multi-functional temporary road structure of assembled and its construction method |
| CN209443571U (en) * | 2018-10-22 | 2019-09-27 | 北京工业大学 | A kind of large span fabricated construction self-balancing tenon-prestressing combination connecting node |
| CN214241166U (en) * | 2021-01-07 | 2021-09-21 | 武汉理工大学 | Anti-rolling UHPC pipe-box combined floating structure |
| CN113638386A (en) * | 2021-08-19 | 2021-11-12 | 中交第三航务工程局有限公司 | Offshore wind power single pile socketed foundation construction is with assembled platform |
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