CN115012270A

CN115012270A - Assembled airport pavement and construction method thereof

Info

Publication number: CN115012270A
Application number: CN202210661071.0A
Authority: CN
Inventors: 丁鹏; 刘治国; 张涛; 毛晖; 周冉; 钟大成; 杨滢涛; 付磊; 张良; 田海涛
Original assignee: China Construction Science and Technology Group Co Ltd
Current assignee: China Construction Science and Technology Group Co Ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-09-06

Abstract

The invention discloses an assembly type airport pavement and a construction method thereof, wherein the assembly type airport pavement comprises the following components: the prefabricated plates are horizontally laid in the same plane, a plurality of stacking heads and stacking grooves are formed in the side faces of the prefabricated plates, and the stacking head of one of the adjacent prefabricated plates is embedded into the stacking groove of the other prefabricated plate. Compared with the existing cast-in-place pavement, the assembled airport pavement has the advantages of high efficiency and quick construction, no influence by weather and seasons, less field wet operation, environmental protection, greenness, low carbon and the like. Through the interlock zonulae occludens each other of buttress head and buttress groove between the prefabricated plate of this application assembled airport pavement, have accurate advantage of assembling, the shearing force is big between the prefabricated plate, and the wholeness is good, can once assemble the construction and accomplish, compares with traditional biography power rod-type node and can avoid or simplify to reserve multiple processes such as the quadratic benefit thick liquid of hole, caulking, plastering, can effectively improve assembled pavement structure's efficiency of construction and construction quality.

Description

Assembled airport pavement and construction method thereof

Technical Field

The invention relates to the technical field of airport pavement, in particular to an assembled airport pavement and a construction method thereof.

Background

The airport pavement is one or more layers of artificial structures paved on the natural soil foundation and the top surface of a base layer by using road building materials, and is a plateau road for taking off, landing, sliding, maintaining and parking of airplanes, such as runways, sliding roads, passenger plateaus, maintenance plateaus, goods plateaus, parking plateaus and the like. The pavement should have certain strength, flatness, roughness and stability, and ensure the safety of taking off and landing of the airplane.

The airport pavement is divided into a rigid pavement and a flexible pavement according to different materials of the surface layer. The rigid pavement is the cement concrete pavement. The flexible pavement refers to asphalt pavement, crushed stone pavement and soil pavement. Broken stone pavement stones are easy to damage airplanes after being loosened, and are rarely used. The soil texture road surface is only used for the temporary airport for the professional flight of agriculture, forestry and the like.

The design theory of the rigid pavement is the same as that of the rigid pavement, and different parameters and different charts are made according to the wheel weight of the airplane when the rigid pavement is specifically applied. For example, in 1951, the theoretical formulas of H.M.S. Westgard and A.H.A. Hogger of G.Pictet and G.K. Lee are made into 24 influence graphs, thereby simplifying the calculation of theoretical deflection and bending moment caused by the distributed load acting on the pavement slab. From the influence map, values are determined for any load distribution that the landing gear may transmit to the runway surface. In 1967, "airport pavement design computer program" was programmed by g.robert, r.g. pascal to replace the influence map. The structure, soil foundation and foundation, material requirements and construction of the rigid pavement are equal to those of a cement concrete pavement.

The asphalt concrete pavement does not need to be provided with expansion joints, the paving speed is higher, the cost is lower than that of a cement concrete pavement, but the maintenance standard of the asphalt concrete pavement is more strict. Bitumen is a by-product of petroleum refining and is therefore more susceptible to oxidation or reaction with aviation fuel or lubricating oil.

The cement concrete pavement is paved in separate bins and is firmer. Expansion joints are reserved among the cement sub-bins to solve the problems of expansion and contraction of cement. The cement concrete pavement is less influenced by weather, fuel oil and lubricating oil, and meanwhile, the service life of the cement concrete pavement is twice as long as that of the asphalt concrete pavement.

Throughout the year, airport pavement is exposed to various weather conditions, experiencing telescoping or even melting. From a daily operation perspective, airport pavement is exposed to rain, snow, wind, and engine wakes. Depending on the geographical location of the airport being constructed, the pavement may be laid on an under-stabilized ground surface, such as expansive clay or earthquake-prone ground. Airport pavements, particularly runways, must be flat, non-skid and have sufficient bearing capacity. At the same time, runways are subject to strong friction, heavy pressure, and dynamic stresses during aircraft landing. Runways must be designed to meet various weather conditions and the repeated take-off and landing requirements of the aircraft.

The lowest layer of a typical pavement structure is a soil foundation, which is next to the pavement and plays a supporting role. If the anti-freezing protection is needed, arranging a cushion layer on the soil foundation; and laying a base layer and a surface layer on the base layer.

1. And (3) soil foundation: the soil foundation provides a foundation for other structures of the road surface. The soil foundation bears less pressure than the surface layer, the base layer and the cushion layer. The combined thickness of the bedding layer, the base layer and the surface layer must be enough to relieve the pressure on the soil foundation so as to avoid deformation or dislocation caused by excessive pressure on the soil foundation. If the density of the soil composing the soil foundation is too low or the water content is high, the stability of the soil foundation is affected.

2. Cushion layer: it is used in the area where frost heaving occurs. The process of the underlayment is similar to the base layer process, but the material requirements are less stringent because the underlayment is under less stress. The mat is formed of a stable or suitably compressed granular material.

3. Stabilizing the soil base: rigid pavements for aircraft carrying weights greater than one hundred thousand pounds must have a stabilized soil foundation. This layer is typically composed of crushed or uncrushed concrete sand raw materials, such as portland cement or asphalt cement.

4. A base layer: the base layer provides stable and uniform support for the pavement. The basic unit can control frost heaving, provides the drainage, provides stable construction foundation for the construction of surface course, avoids groundwater to gush out upwards simultaneously. The substrate is composed of a number of different materials, which may be processed or unprocessed. The raw base layer consists of crushed or uncrushed concrete gravel raw material, while the processed base layer consists of crushed or uncrushed concrete gravel raw material combined with stabilizers or aggregate. The base layer is the key structure of the pavement and is used for dispersing the pressure of the tire on the surface layer, the cushion layer and the soil foundation.

5. Surface layer: i.e. the road surface. The facing provides support to the aircraft structure while preventing water on the ground from entering the soil bed. The flat and compact surface layer can prevent skid, does not cause excessive abrasion to the tire of the airplane and can bear the pressure of the airplane.

The fabricated building is a building which is fabricated by transferring a large amount of field operation work in the traditional construction mode to a factory, processing and manufacturing building components and accessories (such as floor slabs and the like) in the factory, transporting the components and accessories to a building construction site, and assembling and installing the components and the accessories on the site in a reliable connection mode. The prefabricated building mainly comprises a prefabricated concrete structure, a steel structure, a modern wood structure building and the like, and is a representative of a modern industrial production mode due to the adoption of standardized design, factory production, assembly construction, informatization management and intelligent application.

The existing airport pavement design and construction mainly adopt a cast-in-place process, and the assembled airport pavement is still in a research stage. The cast-in-place process has the defects of being not beneficial to quickly building airport runways, being incapable of realizing non-stop construction and being easily influenced by environment, season and weather.

Disclosure of Invention

The invention discloses an assembled airport pavement and a construction method thereof.

The present application provides the following:

a first object of the present application is to provide a fabricated airport pavement comprising: the prefabricated plates are horizontally laid in the same plane, a plurality of stacking heads and stacking grooves are formed in the side faces of the prefabricated plates, and the stacking head of one of the adjacent prefabricated plates is embedded into the stacking groove of the other prefabricated plate.

Optionally, the precast slab has two first connecting side surfaces and two second connecting side surfaces, a plurality of stacking heads are arranged on the first connecting side surfaces at intervals, and a plurality of stacking grooves are arranged on the second connecting side surfaces at intervals;

the pile heads on the first connecting side of one of the two adjacent prefabricated plates are respectively embedded into the pile grooves on the second connecting side of the other prefabricated plate.

Optionally, two ends of the first connecting side surface are respectively provided with a first straight side surface, a plurality of stacking heads are arranged between the first straight side surfaces at the two ends of the first connecting side surface, two ends of the second connecting side surface are respectively provided with a second straight side surface, and a plurality of stacking grooves are arranged between the second straight side surfaces at the two sides of the second connecting side surface;

the first straight side and the second straight side are equal in length, and the number of stacking heads on the first connecting side and the number of stacking grooves on the second connecting side are equal.

Optionally, the prefabricated slabs are provided with steel bar pore channels, the steel bar pore channels of adjacent prefabricated slabs are communicated, and the prestressed steel bars are located in the steel bar pore channels and fixedly connect the two adjacent prefabricated slabs.

Optionally, the four side faces of each prefabricated slab are provided with steel bar pore passages, and the steel bar pore passages on the four side faces are respectively communicated with the steel bar pore passages on the prefabricated slabs adjacent to each other along the length direction of the prefabricated slab, so as to be tensioned, pre-tightened and anchored through prestressed steel bars.

Optionally, each pile groove on the prefabricated slab divides the second connecting side surface of the prefabricated slab into a plurality of divided bodies, and the steel bar pore channel on the second connecting side surface of the prefabricated slab comprises sub-pore channels respectively arranged on the divided bodies;

the stacking head is provided with avoidance holes, each stacking groove on the first connecting side surface of one prefabricated plate in two adjacent prefabricated plates is respectively embedded between each partition body on the second connecting side surface of the other prefabricated plate, and the avoidance holes on each stacking head are respectively communicated with each sub-pore channel;

the prestressed reinforcement penetrates through each sub-pore channel and the avoidance hole.

Optionally, adjacent prestressed reinforcements in the prestressed reinforcements on the same straight line are fixedly connected through the connector.

A second object of the present application is to provide a construction method of the fabricated airport pavement, which includes laying the prefabricated panels in sequence so that the pile head of one of the two adjacent prefabricated panels is embedded in the pile groove of the other prefabricated panel.

Optionally, a steel bar duct is preset on the prefabricated slab, each pile groove on the prefabricated slab divides the second connecting side surface of the prefabricated slab into a plurality of divided bodies, the steel bar duct includes sub-ducts respectively arranged on the divided bodies, and each pile head of the prefabricated slab is provided with a avoidance hole;

the construction method comprises the following steps:

step S1, splicing the current prefabricated plate and the assembled prefabricated plate, enabling the stacking head on the first connecting side of one of the current prefabricated plate and the assembled prefabricated plate to be embedded into the stacking groove on the second connecting side of the other one of the current prefabricated plate and the assembled prefabricated plate, and enabling the avoidance holes on the stacking heads on the first connecting side to be communicated with the sub-pore passages on the partition bodies on the second connecting side;

and S2, inserting the prestressed steel bars into the communicated sub-pore passages and the avoiding holes, tensioning, pre-tightening and anchoring the prestressed steel bars, and fixedly connecting the stacked side faces of the adjacent prefabricated plates.

Optionally, four side surfaces of each prefabricated slab are provided with steel bar ducts, each steel bar duct is provided with a prestressed steel bar, and the construction method further includes step S3: and fixing one end of another prestressed reinforcement on the current prefabricated slab on a connector on the assembled prefabricated slab, tensioning, pre-tightening and anchoring the other end of the prestressed reinforcement, and fixedly connecting the corresponding side surfaces of the current prefabricated slab and the assembled prefabricated slab.

By adopting the technical scheme, the invention has the following beneficial effects:

through the interlock zonulae occludens each other of buttress head and buttress groove between the prefabricated plate of this application assembled airport pavement, have accurate advantage of assembling, the shearing force is big between the prefabricated plate, and the wholeness is good, can once assemble the construction and accomplish, compares with traditional biography power rod-type node and can avoid or simplify to reserve multiple processes such as the quadratic benefit thick liquid of hole, caulking, plastering, can effectively improve assembled pavement structure's efficiency of construction and construction quality.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to its proper form. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic structural diagram of prefabricated slabs of an assembled airport pavement provided in an embodiment of the present application;

fig. 2 is a schematic diagram illustrating a first construction step of a construction method of a fabricated airport pavement according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a second construction step of the construction method of the fabricated airport pavement according to the embodiment of the present application;

fig. 4 is a schematic diagram illustrating a third construction step of the construction method of the fabricated airport pavement according to the embodiment of the present application;

fig. 5 is a schematic diagram illustrating a fourth construction step of the construction method of the fabricated airport pavement according to the embodiment of the present application;

fig. 6 is a schematic diagram illustrating a fifth construction step of the construction method of the fabricated airport pavement according to the embodiment of the present application;

fig. 7 is a schematic diagram illustrating a sixth construction step of the construction method of the fabricated airport pavement according to the embodiment of the present application.

In the drawings, the components represented by the respective reference numerals are listed below:

1. prefabricating a slab; 11. a first connection side; 111. a pile head; 111a, avoiding holes; 112. a first straight side; 12. a second connecting side; 121. a stacking groove; 122. dividing the body; 122a, sub-channels; 123. a second straight side; 2. pre-stressing the steel bars; 3. an anchor head; 4. a connector; a. and (4) pre-stressing the reinforcement pore.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or assembly must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 to 7, an embodiment of the present application provides a fabricated airport pavement, including: the prefabricated plates 1 are horizontally laid in the same plane, a plurality of stacking heads 111 and stacking grooves 121 are arranged on the side faces of the prefabricated plates 1, and the stacking head 111 of one of the adjacent prefabricated plates 1 is embedded in the stacking groove 121 of the other prefabricated plate. The prefabricated plate 1 of this application assembled airport pavement is through the mutual interlock zonulae occludens of buttress head 111 and buttress groove 121 between, has accurate advantage of assembling, and the shearing force is big between the prefabricated plate 1, and the wholeness is good, can once assemble the construction and accomplish, compares with traditional power transmission rod formula node and can avoid or simplify multiple processes such as secondary grout supplementation, joint filling, plastering of reserving the hole, can effectively improve assembled pavement structure's efficiency of construction and construction quality. In the embodiment of the application, the assembly technology is introduced into the airport pavement engineering, and the method has natural advantages in the aspects of emergency quick construction of airport runways, non-navigation construction, construction without influence of environment, season and weather, environmental protection, green carbon reduction and the like.

In a possible embodiment, as shown in fig. 1 and 3, the prefabricated panel 1 has two first connecting sides 11 and two second connecting sides 12, the first connecting sides 11 are provided with a plurality of stacking heads 111 at intervals, and the second connecting sides 12 are provided with a plurality of stacking grooves 121 at intervals. The stacking heads 111 of the first connecting side 11 of one of the two adjacent prefabricated panels 1 are respectively embedded in the stacking grooves 121 of the second connecting side 12 of the other prefabricated panel.

The prefabricated slab 1 can be square, the side length can be 4.5m, the thickness can be 0.3m, and the sizes of the pile head 111 and the pile groove 121 can be 0.5m multiplied by 0.5 m. The prefabricated slab 1 is simple in structure, single in structural form, concise and convenient to construct, and excellent in universality, applicability and assembling performance.

Referring to fig. 1, in a possible embodiment, the first connecting side 11 is provided with first flat sides 112 at two ends, the first connecting side 11 is provided with a plurality of stacking heads 111 between the first flat sides 112 at two ends, the second connecting side 12 is provided with second flat sides 123 at two ends, and the second connecting side 12 is provided with a plurality of stacking grooves 121 between the second flat sides 123 at two ends. The first flat side 112 and the second flat side 123 are equal in length, and the number of the stacking heads 111 on the first connecting side 11 and the number of the stacking grooves 121 on the second connecting side 12 are equal. The first and second flat sides 112, 123 may each be 1m in length. The number of the stacking heads 111 on the first connecting side 11 and the stacking grooves 121 on the second connecting side 12 can be three in each case.

Referring to fig. 1 and 3, in a possible embodiment, the prefabricated panels 1 are provided with steel bar holes a, the steel bar holes a of adjacent prefabricated panels 1 are communicated, and prestressed steel bars 2 are positioned in the steel bar holes a and fixedly connect two adjacent prefabricated panels 1.

In the embodiment, the adjacent prefabricated plates 1 are fixedly connected through the prestressed reinforcement bars 2, the connection structure is simple, the connection structure is good in stability, the prestressed reinforcement bars 2 are tensioned, the effect of micro-leveling of the prefabricated plates 1 is achieved, the traditional functions of force transmission rods and the like are replaced, the force transmission rods do not need to be additionally arranged at the interfaces, the assembly structure is simplified, and the assembly efficiency is improved.

In a possible embodiment, the four sides of each prefabricated slab 1 are provided with steel bar holes a, and the steel bar holes a on the four sides are respectively communicated with the steel bar holes a on the prefabricated slab 1 adjacent along the length direction of the prefabricated slab so as to be anchored by tensioning and pre-tightening the prestressed steel bars 2.

In the embodiment, four side surfaces of each prefabricated slab 1 are fixed with four adjacent prefabricated slabs 1 through prestressed reinforcement tensioning and pretightening, the assembly structure is high in stability, and the prefabricated slabs 1 are good in integrity.

In a possible embodiment, referring to fig. 1, each pile 121 of the prefabricated panels 1 divides the second connecting side 12 of the prefabricated panels 1 into a plurality of divided bodies 122, and the steel reinforcement duct a of the second connecting side 12 of the prefabricated panels 1 comprises sub-ducts 122a respectively arranged on the divided bodies 122. The stacking head 111 is provided with a relief hole 111a, each stacking groove 121 on the first connecting side 11 of one of the two adjacent prefabricated plates 1 is respectively embedded between each dividing body 122 on the second connecting side of the other one, and the relief hole 111a on each stacking head 111 is respectively communicated with each sub-pore passage 122 a. The prestressed reinforcement 2 is disposed through each of the sub-ducts 122a and the relief holes 111 a.

In the embodiment, the adjacent prefabricated plates 1 are accurately assembled through the stacking grooves 121 and the stacking heads 111, and then the adjacent prefabricated plates 1 are connected and positioned through the prestressed steel bars 2, so that the two adjacent prefabricated plates 1 are kept mutually meshed tightly, are accurately assembled and have a good integration effect.

In a possible embodiment, as shown in fig. 7, adjacent prestressed reinforcements 2 in the same line of prestressed reinforcements 2 are fixedly connected by means of a connector 4.

In the embodiment, the prefabricated slabs 1 on the assembled airport pavement are arranged in multiple rows and multiple columns, the prestressed reinforcements 2 are correspondingly arranged in multiple rows and multiple columns, each prestressed reinforcement 2 can be only positioned in the reinforcement hole channel a of each prefabricated slab 1, or part of the prestressed reinforcements 2 can also be simultaneously positioned in the reinforcement hole channels a of two or more adjacent prefabricated slabs 1, and the prefabricated slabs passing through are fixedly connected in a tensioning and anchoring mode.

In a preferred embodiment, each prestressed reinforcement 2 may be located in a reinforcement duct a of one prefabricated slab 1 only, end grooves with outward-expanded diameters are respectively arranged at two ends of the reinforcement duct a on the prefabricated slab 1, the end groove at least located on one side of the prestressed reinforcement 2 is connected with a connector 4, the connector 4 is located in the end groove and does not extend out of the end groove, and when the prefabricated slab is conveniently lowered in a hoisting manner, the connector 4 and the prefabricated slab which falls in place do not interfere with each other. In the process of assembling the current prefabricated slab 1, the prefabricated slab 1 is vertically lowered through hoisting equipment so that the prefabricated slab 1 vertically falls into an installation position, and the prestressed reinforcement 2 in the prefabricated slab 1 can be installed in advance or can be installed on site. And operating the prestressed steel bars 2 in the current prefabricated slab 1 to enable one ends of the prestressed steel bars 2 to be connected to the steel bars in the adjacent prefabricated slab 1. Specifically, a connector 4 is arranged at the end of a prestressed reinforcement of an assembled prefabricated slab 1, the connector 4 is provided with an internal thread, an external thread is arranged at the end of a prestressed reinforcement 2, when the current prefabricated slab 1 is assembled, an on-site operator abuts against the end of the prestressed reinforcement 2 in the current prefabricated slab 1 against the mouth of the connector 4 of the assembled prefabricated slab 1, then the current prestressed reinforcement 2 is rotated to connect the end of the current prestressed reinforcement 2 to the connector 4 in a threaded manner, an anchor head 3 is arranged at the other end of the prestressed reinforcement 2 to stretch, micro-leveling is carried out on the current prefabricated slab 1, and the current prefabricated slab 1 and the assembled prefabricated slab 1 are tightly fixed. The anchor head 3 in the tensioning process is positioned in the end groove, the part of the prestressed reinforcement 2 extending out of the end groove can be sheared, and the connector 4 is installed for use when the next prefabricated slab is assembled.

Wherein, prestressing steel 2 can adopt ordinary prestressing steel 2, and the diameter is 20mm, can adjust according to actual construction. The main function of the connector 4 is to connect the segmented steel bars into one steel bar, and the tensile strength of the two steel bars connected by the connector 4 is equal to that of the other steel bar. The anchor head 3 is a conventional fixed rebar tip member. After the pre-procedure of paving the prefabricated slab 1 is completed, paving of the prefabricated slab 1 is started, and necessary connecting pieces such as prestressed reinforcements, a connector 4, an anchor head 3 and the like can be installed in the prefabricated slab 1 in advance.

Example two

The second embodiment of the application provides a construction method of the fabricated airport pavement in the first embodiment, which comprises the steps of laying the prefabricated slabs 1 in sequence, so that the pile heads 111 of one of the two adjacent prefabricated slabs 1 are embedded in the pile grooves 121 of the other prefabricated slab.

The construction method can be completed by one-time assembling construction, avoids or simplifies multiple procedures of secondary slurry filling, joint filling, surface plastering and the like for the preformed hole and the like, and effectively improves the construction efficiency. The prefabricated slab 1 has the advantages of single structural form, simplicity and convenience in construction, and strong universality, applicability and assembly.

A steel bar hole channel a is preset on the precast slab 1, each pile groove 121 on the precast slab 1 divides the second connecting side surface 12 on the precast slab 1 into a plurality of divided bodies 122, each steel bar hole channel a comprises a sub-hole channel 122a respectively arranged on each divided body 122, and each pile head 111 of the precast slab 1 is provided with an avoidance hole 111 a;

the construction method comprises the following steps:

step S1, splicing the current prefabricated plate 1 and the assembled prefabricated plate 1, so that the stacking heads 111 on the first connecting side 11 of one of the current prefabricated plate 1 and the assembled prefabricated plate 1 are embedded into the stacking grooves 121 on the second connecting side 12 of the other one of the current prefabricated plate 1 and the assembled prefabricated plate 1, and the avoidance holes 111a on the stacking heads 111 on the first connecting side 11 are communicated with the sub-pore passages on the partition bodies on the second connecting side 12;

and step S2, inserting the prestressed steel bars 2 into the communicated sub-pore channels and avoidance holes 111a, tensioning, pre-tightening and anchoring the prestressed steel bars 2, and fixedly connecting the stacked side faces of the adjacent prefabricated plates 1.

In the laying process of the prefabricated slabs 1, there is no mandatory laying sequence, and the specific laying sequence trajectory can be planned in advance, and the prefabricated slabs 1 can be laid in a row, or two rows of the prefabricated slabs 1 can be laid simultaneously, which is not limited in the present application.

Optionally, four side surfaces of each prefabricated slab 1 are provided with steel bar ducts a, each steel bar duct a is provided with a prestressed steel bar 2, as shown in fig. 3 and 4, when two or more rows of prefabricated slabs 1 are laid simultaneously, and when the stacking side surface of the prefabricated slab 1 is the second connecting side surface 12, the construction method further includes step S3: and fixing one end of another prestressed reinforcement on the current prefabricated slab on a connector on the assembled prefabricated slab, tensioning, pre-tightening and anchoring the other end of the prestressed reinforcement, and fixedly connecting the corresponding side surfaces of the current prefabricated slab and the assembled prefabricated slab. Namely, when the precast slab 1 is assembled, the prestressed reinforcement 2 tensioning and anchoring is firstly carried out on one side of the stacking side surface, so that the fixed precast slab 1 does not skew, and the prestressed reinforcement 2 tensioning and anchoring is conveniently carried out on one side of the vertical stacking side surface.

EXAMPLE III

The third embodiment of the application provides a specific construction method of an assembled airport pavement on the basis of the first embodiment and the second embodiment, and the method comprises the following steps:

the first step is as follows: referring to fig. 2, the (i) prefabricated slab 1 is stably placed at a predetermined position by a hoisting manner according to a positioning line. Connecting pieces such as prestressed reinforcements 2 and connectors 4 can be placed in advance in the reinforcement hole channels a on the left side and the right side (the first connecting side 11) in the prefabricated slab 1.

The second step is that: referring to fig. 3, the No. 1 prefabricated slab is hoisted to the north side (upper north, lower south, left, right, east) of the No. 1 prefabricated slab, so that the No. 1 prefabricated slab descends vertically and is directly and accurately stacked and connected with the first connecting side face 11 of the No. 1 prefabricated slab, and is stably placed. And (3) penetrating prestressed steel bars 2 into the steel bar hole channels a in the stacking area, tensioning and anchoring to complete the assembly of the No. 1 precast slab and the No. 1 precast slab, wherein anchor heads 3 are arranged on two sides of the No. 1 precast slab, the anchor heads 3 are positioned in end grooves on two sides of the No. 1 precast slab, and a connector 4 can be arranged at the tail ends of the prestressed steel bars 2 in the end grooves on the east side.

The third step: referring to fig. 4, with the same first step and the second step, assembling of the No. three precast slabs 1 is completed, the prestressed reinforcements 2 in the No. three precast slabs 1 are firstly tensioned and fixed in the south-north direction (stacking area), and then the prestressed reinforcements 2 are tensioned and fixed in the east-west direction.

The fourth step: referring to fig. 5, the assembling of the No. four prefabricated panels 1, the No. two prefabricated panels and the No. three prefabricated panels 1 is completed simultaneously with the above steps. The prestressed reinforcement is firstly tensioned and anchored in the east-west direction and then tensioned and anchored in the north-south direction.

The fifth step: referring to fig. 6, firstly, the No. 1 precast slabs and the No. 1 precast slabs are stacked and spliced, and then prestressed reinforcement tension pretension anchoring in the stacking and connecting area is completed.

And a sixth step: referring to fig. 7, as in the fourth step, the prefabricated slab # 1 and the prefabricated slabs # 4 and # 1 are stacked and assembled at the same time, and then two stacking and connecting areas are pre-stressed and anchored by the prestressed reinforcements respectively.

According to the actual field situation, the construction method of the fabricated airport pavement can further comprise more construction steps, each construction step is consistent with the construction principle, and the construction method is not repeated herein.

In summary, necessary connecting pieces such as prestressed reinforcements, connectors 4 and anchor heads 3 are installed in advance in the prefabricated slabs 1 before assembly. During assembly, attention needs to be paid to the process connection and the time of inserting and fixing the prestressed reinforcement 2 in sections like the connector 4, and the forward planning can be specifically carried out according to the quantity of transverse (north-south) and longitudinal (east-west) paving plates.

It should be noted that this embodiment only provides one kind of paving scheme, and the actual construction can be flexibly changed according to the actual engineering, the design scheme and the construction period requirement.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. A fabricated airport pavement comprising: the prefabricated plates are horizontally laid in the same plane, a plurality of stacking heads and stacking grooves are formed in the side faces of the prefabricated plates, and the stacking head of one of the adjacent prefabricated plates is embedded into the stacking groove of the other prefabricated plate.

2. The fabricated airport pavement of claim 1, wherein the prefabricated slab has two first connecting sides on which a plurality of stacking heads are spaced apart and two second connecting sides on which a plurality of stacking slots are spaced apart;

3. The fabricated airport pavement of claim 2, wherein the first connecting side is provided at each of its ends with a first flat side, wherein the first connecting side is provided with a plurality of buttresses between the first flat sides at each of its ends, wherein the second connecting side is provided at each of its ends with a second flat side, and wherein the second connecting side is provided with a plurality of buttresses between the second flat sides at each of its ends;

4. The fabricated airport pavement of claim 2, wherein the prefabricated panels are provided with steel bar tunnels, the steel bar tunnels of adjacent prefabricated panels are communicated, and the prestressed steel bars are positioned in the steel bar tunnels and fixedly connect the two adjacent prefabricated panels.

5. The fabricated airport pavement of claim 4, wherein the prefabricated panels are provided with steel bar holes on four sides, and the steel bar holes on the four sides are respectively communicated with the steel bar holes on the adjacent prefabricated panels along the length direction of the prefabricated panels so as to be tensioned and pre-anchored by the prestressed steel bars.

6. The fabricated airport pavement of claim 5, wherein each pile of prefabricated panels divides the second connecting side of the prefabricated panels into a plurality of segments, and the steel reinforcement tunnels on the second connecting side of the prefabricated panels comprise sub-tunnels respectively provided on the segments;

7. The fabricated airfield pavement of claim 6 wherein adjacent ones of the aligned prestressing tendons are fixedly connected by a connector.

8. The construction method of the fabricated airport pavement according to any one of claims 1 to 7, comprising laying the prefabricated panels in sequence such that the pile head of one of the two adjacent prefabricated panels is embedded in the pile groove of the other.

9. The construction method according to claim 8, wherein a steel bar hole is preset on the precast slab, each pile groove on the precast slab divides the second connecting side surface of the precast slab into a plurality of divided bodies, the steel bar hole comprises sub-holes respectively arranged on the divided bodies, and each pile head of the precast slab is provided with an avoidance hole;

the construction method comprises the following steps:

10. The construction method as claimed in claim 9, wherein reinforcing steel bar ducts are provided on four sides of each of the prefabricated panels, each reinforcing steel bar duct being provided with prestressed reinforcing steel bars, the construction method further comprising the step of S3: and fixing one end of another prestressed reinforcement on the current prefabricated slab on a connector on the assembled prefabricated slab, tensioning, pre-tightening and anchoring the other end of the prestressed reinforcement, and fixedly connecting the corresponding side surfaces of the current prefabricated slab and the assembled prefabricated slab.