Tunnel load isolation structure in airport flying area and track area

Abstract

The invention relates to the technical field of tunnel load isolation, and discloses a tunnel load isolation structure in an airport flying area, comprising cast-in-place pile rows formed in a longitudinal area and mixing pile rows formed in a lateral area, a cast-in-place interval is formed between adjacent cast-in-place pile rows, a tunnel is located in the cast-in-place interval, and each cast-in-place pile row comprises a plurality of cast-in-place piles; a stirring interval is formed between every two adjacent stirring pile rows; a cover plate layer is arranged at the top of the pouring interval, and the cover plate layer and the pouring pile row bear the longitudinal load of the longitudinal area; a pile top structure layer is arranged at the top of the stirring interval, the pile top structure layer and the top of the stirring pile row are connected into a whole, and horizontal loads facing the longitudinal area are isolated; the longitudinal load acting on the cover plate layer is conducted to the multiple cast-in-place piles of the cast-in-place pile row through the cover plate layer, the longitudinal load is prevented from acting on the tunnel, and the influence of the longitudinal load on the tunnel is reduced; and secondly, the multiple stirring piles can seal underground water, and combined blocking of longitudinal loads and horizontal loads is achieved in cooperation with the cast-in-place pile rows.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel load isolation, in particular to an airport runway area tunnel load isolation structure. BACKGROUND

[0002] When the airport runway area is arranged above the tunnel, the additional stress generated by the large dynamic load of the aircraft on the tunnel will exceed the bearing capacity of the tunnel, and the repeated deformation of the tunnel caused by the back and forth operation of the aircraft will also occur. In the prior art, it is difficult to isolate the load in the foundation, which causes the tunnel to be greatly affected by the load, and the tunnel has a great safety hazard. SUMMARY

[0003] The purpose of the present application is to provide an airport runway area tunnel load isolation structure, which aims to solve the problem that the tunnel under the airport runway area is greatly affected by the load in the prior art.

[0004] The present application is realized as follows: an airport runway area tunnel load isolation structure, comprising a plurality of cast-in-place pile rows arranged in sequence and spaced apart and conducting longitudinal loads formed in the foundation, and a plurality of mixing pile rows arranged in sequence and spaced apart and isolating horizontal loads; the foundation comprises a longitudinal area, the longitudinal area has lateral areas on both sides, and the longitudinal area has a tunnel therein; A plurality of the cast-in-place pile rows are formed in the longitudinal area, and the adjacent cast-in-place pile rows have a cast-in-place interval therebetween, the tunnel is located in the cast-in-place interval, and the cast-in-place pile rows are arranged along the axial extension of the tunnel; the cast-in-place pile row comprises a plurality of cast-in-place piles, and the plurality of cast-in-place piles are arranged in sequence along the axial direction of the tunnel; A plurality of the mixing pile rows are arranged in the lateral area and arranged in sequence and spaced apart in a direction away from the longitudinal area, and the adjacent mixing pile rows have a mixing interval therebetween; The top of the cast-in-place interval is provided with a cover plate layer, the cover plate layer is integrally connected with the top of the cast-in-place pile row, the cover plate layer and the cast-in-place pile row bear the longitudinal load of the longitudinal area; the top of the mixing interval is provided with a pile top structure layer, the pile top structure layer is integrally connected with the top of the mixing pile row, and the pile top structure layer and the mixing pile row isolate the horizontal load towards the longitudinal area.

[0005] Further, the bottom of the cast-in-place pile is embedded in the rock stratum, and the top of the cast-in-place pile is exposed at the top of the longitudinal area.

[0006] Further, the top of the cast-in-place pile row is provided with a corbel, the corbel is connected with the top of the plurality of cast-in-place piles of the cast-in-place pile row, and the cover plate layer is integrally connected with the corbel.

[0007] Further, the side part of the pile top structure layer and the side part of the cover plate layer have a side gap, so that the pile top structure layer and the cover plate layer are arranged horizontally apart.

[0008] Further, the pile top structure layer includes a geogrid layer, a gravel layer and a filling layer arranged on the top of the lateral area, and the geogrid layer, the gravel layer and the filling layer are sequentially arranged in the direction from bottom to top of the pile top structure layer, wherein the geogrid layer covers the top of the mixing interval and the top of the mixing pile.

[0009] Further, the cover plate layer is a reinforced concrete plate.

[0010] Further, the pouring interval top has a lower recess arranged towards the recess, and the lower recess is in a conical shape, wherein the diameter of the lower recess gradually decreases in the direction from top to bottom of the lower recess. The pouring interval is implanted with two conductive shafts arranged in opposite directions, the top of the conductive shafts is exposed at the bottom of the lower recess to form a top end, and the bottom of the conductive shafts is located above the tunnel; the lower recess is filled with an elastic and conical buffer block, and the bottom of the buffer block is in a top-to-bottom butt joint with the top end. The cover plate layer is pressed against the buffer block and is integrated with the buffer block; when the top of the cover plate layer bears a longitudinal load, part of the longitudinal load is conducted to the rock stratum through the piles, the buffer block elastically buffers the longitudinal load with the cover plate layer, and part of the longitudinal load is obliquely dispersed and conducted in the foundation through the conductive shafts.

[0011] Further, the top of the buffer block is recessed to form an upper recess, and the upper recess is in a conical shape, wherein the diameter of the upper recess gradually decreases in the direction from top to bottom of the upper recess; the bottom of the cover plate layer is protruded downwards to form a conical protrusion, and the protrusion is movably embedded in the upper recess, so that the cover plate layer is integrated with the buffer block. The top end is in a spherical shape, the top end is exposed at the bottom of the lower recess, and the buffer block has two recessed grooves in a spherical shape on both sides, and the top end is movably arranged in the recessed grooves.

[0012] Further, the pile top structure layer includes a geogrid layer, a gravel layer and a filling layer arranged on the top of the lateral area, and the geogrid layer, the gravel layer and the filling layer are sequentially arranged in the direction from bottom to top of the pile top structure layer, wherein the geogrid layer covers the top of the mixing interval and the top of the mixing pile. The geogrid layer has a plurality of grid holes arranged in an array; the mixing interval is inserted with a plurality of elastic sheets, the lower part of the elastic sheets is embedded in the mixing interval and is fixedly arranged, and the upper part of the elastic sheets is exposed on the mixing interval to form a movable end; the movable end passes through the grid holes and extends into the gravel layer, is filled and buried by the gravel layer, and is fixed in the gravel layer.

[0013] Further, the lower part of the movable end is sleeved with an elastic ring, the lower part of the elastic ring is fixed in the stirring interval, and the upper part of the elastic ring is exposed on the stirring interval and filled and fixed in the gravel layer; The movable end is provided with a through hole, a connecting rib is arranged in the through hole, the connecting rib passes through the movable ends of the plurality of elastic sheets and connects the movable ends of the plurality of elastic sheets into one body, and the connecting rib is filled and buried in the gravel layer and fixed in the gravel layer.

[0014] Compared with the prior art, the airport flight area runway area tunnel load isolation structure provided by the application arranges the cast-in-place pile row in the longitudinal area, and the cover plate layer and the cast-in-place pile row form an integrated structure, so that the longitudinal load acting on the cover plate layer is conducted to the plurality of cast-in-place piles of the cast-in-place pile row through the cover plate layer, the longitudinal load acting on the tunnel is avoided, and the influence of the longitudinal load on the tunnel is reduced. Secondly, a plurality of mixing piles are arranged in the lateral area, the plurality of mixing piles can isolate the horizontal load of the lateral area towards the tunnel, and the plurality of mixing piles can seal underground water, cooperate with the cast-in-place pile row, and realize combined blocking of the longitudinal load and the horizontal load. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is an internal schematic view of the airport flight area runway area tunnel load isolation provided by the application; Figure 2 is an internal schematic view of the cooperation of the cover plate layer, the buffer block and the conducting shaft provided by the application; Figure 3 is a front view of the buffer block provided by the application; Figure 4 is an internal structure view of the cooperation of the pile top structure layer and the elastic sheet provided by the application; Figure 5 is a partial structure view of the geogrid layer provided by the application. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0017] The implementation of the application is described in detail below in combination with specific examples.

[0018] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0019] Referring to Figures 1-5 The preferred embodiment provided by the present application is shown.

[0020] The tunnel load isolation structure of the airport flight area runway area includes a plurality of cast-in-place pile rows arranged in sequence and spaced apart and conducting longitudinal loads in the foundation, and a plurality of mixing pile rows arranged in sequence and spaced apart and isolating horizontal loads; the foundation includes a longitudinal area 100, both sides of the longitudinal area 100 have lateral areas 300, and the longitudinal area 100 has a tunnel 200, which can be multiple or single.

[0021] A plurality of cast-in-place pile rows are formed in the longitudinal area 100, and the adjacent cast-in-place pile rows have a cast-in-place interval, and the tunnel 200 is located in the cast-in-place interval, and the cast-in-place pile rows are arranged along the axial direction of the tunnel; the cast-in-place pile row includes a plurality of cast-in-place piles 302 arranged in sequence along the axial direction of the tunnel 200.

[0022] A plurality of mixing pile rows are arranged in the lateral area 300 and in a direction away from the longitudinal area 100, and the plurality of mixing pile rows are arranged in sequence and spaced apart, and the adjacent mixing pile rows have a mixing interval; The top of the cast-in-place interval is provided with a cover layer 102, the cover layer 102 is connected with the top of the cast-in-place pile row as a whole, the cover layer 102 and the cast-in-place pile row bear the longitudinal load of the longitudinal area; the top of the mixing interval is provided with a pile top structure layer 301, the pile top structure layer 301 is connected with the top of the mixing pile row as a whole, and the pile top structure layer 301 and the mixing pile row isolate the horizontal load towards the longitudinal area.

[0023] The above-mentioned tunnel load isolation structure of the airport flight area runway area is arranged by arranging the cast-in-place pile row in the longitudinal area 100, and the cover layer 102 and the cast-in-place pile row form an integral structure, so that the longitudinal load acting on the cover layer 102 is conducted to the plurality of cast-in-place piles 101 of the cast-in-place pile row through the cover layer 102, avoiding the longitudinal load acting on the tunnel 200, and reducing the influence of the longitudinal load on the tunnel 200; Secondly, a plurality of mixing piles 302 are arranged in the lateral area 300, the plurality of mixing piles 302 can isolate the horizontal load of the lateral area 300 towards the tunnel 200, and the plurality of mixing piles 302 can seal underground water, cooperate with the bored pile row, and realize the combined blocking of the longitudinal load and the horizontal load.

[0024] In the embodiment, two tunnels 200 are arranged in the longitudinal area 100 in parallel at intervals; in the construction step 2), three bored pile rows are arranged in the longitudinal area 100, and the tunnels 200 are located between adjacent bored pile rows.

[0025] Of course, it can also be a single tunnel 200, as long as the tunnel 200 is arranged between adjacent bored pile rows, so that the bored pile rows on both sides of the tunnel 200 form a partition on both sides of the tunnel 200, and the longitudinal load is directly conducted downwards through the bored pile row, avoiding the direct action of the longitudinal load on the tunnel 200.

[0026] In the embodiment, the bottom of the bored pile 101 is embedded in the rock stratum, and the top of the bored pile 101 is exposed on the top of the longitudinal area 100 along the lower part of the tunnel 200. In this way, the longitudinal load can be conducted to the rock stratum through the bored pile 101, ensuring the better supporting capacity of the bored pile 101.

[0027] In the embodiment, the top of the bored pile row is provided with a corbel beam 103, the corbel beam 103 is connected with the top of the plurality of bored piles 101 of the bored pile row, and the cover layer 102 is connected with the corbel beam 103 as a whole. Through the corbel beam 103, the plurality of bored piles 101 can be combined as a whole, so as to facilitate the connection between the bored pile row and the cover layer 102 as a whole.

[0028] In the embodiment, the side part of the pile top structure layer 301 and the side wall of the cover layer 102 are arranged at intervals to form a side gap 104, and the side gap 104 horizontally isolates the pile top structure layer 301 and the cover layer 102. In this way, by forming the side gap 104, the horizontal load of the pile top structure layer 301 is avoided to be directly transmitted to the cover layer 102, and a horizontal load partition is formed between the lateral area 300 and the longitudinal area 100.

[0029] In the embodiment, the mixing pile row includes a plurality of mixing piles 302, the plurality of mixing piles 302 are arranged in engagement along the axial direction of the tunnel 200, adjacent mixing piles 302 are arranged in engagement, a mixing pile row in engagement is formed, the mixing pile row forms a lateral seal on the side of the longitudinal area 100, and isolates the horizontal load of the lateral area 300 towards the tunnel 200.

[0030] In this way, the mixing pile row can form a closed longitudinal curtain, isolate the horizontal load of the lateral area 300 towards the tunnel 200, and laterally seal underground water, thereby greatly reducing the horizontal load applied to the tunnel 200.

[0031] In this embodiment, a plurality of the above-mentioned mixing pile rows are formed in the lateral area 300, and the plurality of mixing pile rows are sequentially and spacedly arranged along the direction away from the longitudinal area 100, and the mixing pile rows are spacedly arranged, and the mixing intervals between the adjacent mixing pile rows extend along the axial direction of the tunnel 200. In this way, the plurality of mixing pile rows form a plurality of spacedly arranged longitudinal curtains, which can achieve multi-channel blocking of the horizontal load and multi-channel sealing of the underground water.

[0032] In this embodiment, the cover plate layer 102 is a reinforced concrete plate.

[0033] In this embodiment, before the cover plate layer 102 is constructed, the top of the grouting interval is excavated and processed, and the top of the grouting interval is formed into a lower groove with a top opening and a tapered shape, and the diameter of the lower groove gradually decreases along the downward direction of the lower groove; Two conductive shafts 500 are arranged in the grouting interval, and the top of the conductive shaft 500 is exposed at the bottom of the lower groove to form a top end 501 in an exposed arrangement, and the two conductive shafts 500 are arranged in a diverging outward direction along the downward direction of the grouting interval; the lower groove is filled with an elastic and tapered buffer block 400, and the bottom of the buffer block 400 is in a top-to-bottom butt joint with the top end 501; the cover plate layer 102 is pressed on the buffer block 400 and is integrated with the buffer block 400; When the top of the cover plate layer 102 bears a longitudinal load, part of the longitudinal load is conducted to the rock stratum through the plurality of grouting piles 101, the buffer block 400 elastically buffers the longitudinal load with the cover plate layer 102, and part of the longitudinal load is obliquely and dispersedly conducted in the foundation through the conductive shaft 500.

[0034] When the longitudinal load acts on the cover plate layer 102, part of the longitudinal load is transmitted to the rock stratum through the grouting pile 101, and the elastic buffering of part of the longitudinal load can reduce the influence of the longitudinal load on the tunnel 200; in addition, the elastic deformation of the bottom of the buffer block 400 can be transmitted to the conductive shaft 500, and the conductive shaft 500 is dispersed into the longitudinal area 100 to reduce the influence on the tunnel 200.

[0035] In this embodiment, the top of the buffer block 400 is recessed to form an upper groove 401, and the upper groove 401 is tapered, and the diameter of the upper groove 401 gradually decreases along the downward direction of the upper groove 401; the middle position of the bottom of the cover plate layer 102 protrudes downward to form a protrusion 1021 in a tapered shape, and the protrusion 1021 is embedded in the upper groove 401, so that the middle part of the cover plate layer 102 is integrated with the buffer block 400.

[0036] By arranging the lower groove in a conical shape, and filling the buffer block 400 in the lower groove, the buffer block 400 is in a conical shape, the top of the buffer block 400 forms the upper groove 401 in a conical shape, the cover plate layer 102 protrudes to form the protrusion 1021 in a conical shape, so that the buffer block 400 is matched with the conical shape of the lower groove, the protrusion 1021 is matched with the conical shape of the upper groove 401, and two layers of conical matching arrangements arranged in an upper and lower arrangement are formed.

[0037] When the longitudinal load acts on the cover plate layer 102, part of the longitudinal load can be transmitted to the rock stratum through the upper and lower layers of the elastic buffer of the buffer block 400, and part of the longitudinal load can be elastically buffered to reduce the influence of the longitudinal load on the tunnel 200.

[0038] In the embodiment, the top end 501 is in a ball head shape, and the top end 501 is exposed at the bottom of the lower groove; the buffer block 400 has a spherical recess groove 402 on each side, and the top end 501 is movably arranged in the recess groove 402.

[0039] The ball head shape is matched between the top end 501 and the recess groove 402, and the top end 501 can be movably arranged in the recess groove 402 to achieve movable matching, so that the elastic transmission and buffering between the elastic block and the transmission shaft 500 are more convenient to achieve.

[0040] In the embodiment, the pile top structure layer 301 includes a geogrid layer 305, a gravel layer 304, and a fill layer 303 arranged on the top of the lateral area 300, and the geogrid layer 305, the gravel layer 304, and the fill layer 303 are sequentially arranged in a top-down direction along the pile top structure layer 301. The geogrid layer 305 covers the top of the mixing interval and the top of the mixing pile 302. In actual construction, the geogrid layer 305 is arranged on the top of the lateral area 300 first, then the gravel layer 304 is arranged, and finally the fill layer 303 is arranged.

[0041] The geogrid layer 305 has a plurality of grid holes 3051 arranged in an array; a plurality of elastic sheets 600 are inserted into the mixing interval, the lower part of the elastic sheet 600 is embedded in the mixing interval and arranged fixedly, and the upper part of the elastic sheet 600 is exposed on the mixing interval to form a movable end 601; the movable end 601 passes through the grid hole 3051 and extends into the gravel layer 304, is filled and buried by the gravel layer 304, and is fixed in the gravel layer 304.

[0042] By inserting multiple elastic sheets 600 in the stirring interval, the movable end 601 of the elastic sheet 600 passes through the geogrid layer 305, is integrated with the geogrid layer 305, and is filled and buried by the gravel layer 304. The movable end 601 is fixed in the gravel layer 304, that is, is integrated with the entire pile top structure layer 301. In this way, internal elastic buffering between the pile top structure layer 301 and the lateral area 300 can be achieved to better bear horizontal load. Moreover, the multiple elastic sheets 600 can better integrate the pile top structure layer 301 and the lateral area 300 as a whole.

[0043] In the embodiment, the lower part of the movable end 601 is sleeved with an elastic ring 602. The lower part of the elastic ring 602 is fixed in the stirring interval, and the upper part of the elastic ring 602 is exposed on the stirring interval and is filled and fixed in the gravel layer 304. A through hole is arranged in the movable end 601, and a connecting rib 306 is arranged in the through hole. The connecting rib 306 passes through the movable end 601 of the multiple elastic sheets 600 to connect the movable end 601 of the multiple elastic sheets 600 as a whole. The connecting rib 306 is filled and buried by the gravel layer 304 and is fixed in the gravel layer 304.

[0044] The elastic ring 602 is arranged to have the ability of elastic buffering deformation between the movable end 601 and the lower end of the elastic sheet 600, so as to realize elastic buffering when the pile top structure layer 301 and the lateral area 300 bear horizontal load. The connecting rib 306 is arranged to integrate the multiple elastic sheets 600, which greatly enhances the elastic buffering ability between the pile top structure layer 301 and the lateral area 300.

[0045] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tunnel load isolation structure for an airfield runway area, characterized in that The application relates to a tunnel foundation, which comprises a plurality of sequentially and spacedly arranged cast-in-place pile rows for conducting longitudinal load and a plurality of sequentially and spacedly arranged mixing pile rows for isolating horizontal load; the foundation comprises a longitudinal area with a tunnel in the longitudinal area and lateral areas on both sides of the longitudinal area. A plurality of the cast-in-place pile rows are arranged in the longitudinal area, and the adjacent cast-in-place pile rows are provided with a cast-in-place interval, the tunnel is arranged in the cast-in-place interval, and the cast-in-place pile rows are arranged along the axial direction of the tunnel; the cast-in-place pile row comprises a plurality of cast-in-place piles which are sequentially arranged along the axial direction of the tunnel. A plurality of the mixing pile rows are arranged in the lateral area and sequentially and spacedly arranged along the direction away from the longitudinal area, and the adjacent mixing pile rows are provided with a mixing interval. The top of the cast-in-place interval is provided with a cover plate layer which is integrally connected with the top of the cast-in-place pile row, and the cover plate layer and the cast-in-place pile row bear the longitudinal load of the longitudinal area; the top of the mixing interval is provided with a pile top structure layer which is integrally connected with the top of the mixing pile row, and the pile top structure layer and the mixing pile row isolate the horizontal load towards the longitudinal area.

2. The airport flight zone runway zone tunnel load isolation structure according to claim 1, characterized in that, The bottom of the cast-in-place pile is embedded in the rock stratum, and the top of the cast-in-place pile is exposed at the top of the longitudinal area.

3. The airport flight zone runway zone tunnel load isolation structure of claim 2, wherein, The top of the cast-in-place pile row is provided with a crown beam which is connected with the top of the plurality of cast-in-place piles of the cast-in-place pile row, and the cover plate layer is integrally connected with the crown beam.

4. The airport flight zone runway zone tunnel load isolation structure of claim 2, wherein, The lateral part of the pile top structure layer is provided with a lateral gap with the lateral part of the cover plate layer, so that the pile top structure layer and the cover plate layer are horizontally spacedly arranged.

5. A runway strip tunnel load isolation structure for an airport flight strip according to any one of claims 2 to 4, wherein, The mixing pile row comprises a plurality of mixing piles which are sequentially arranged along the axial direction of the tunnel and are arranged in engagement with each other.

6. A runway strip tunnel load isolation structure for an airport flight strip according to any one of claims 2 to 4, wherein, The cover plate layer is a reinforced concrete plate.

7. A runway strip tunnel load isolation structure for an airport flight strip according to any one of claims 2 to 4, wherein, The top of the cast-in-place interval is provided with a lower recess which is arranged in a recessed manner, the lower recess is in a conical shape, and the diameter of the lower recess gradually decreases along the direction from top to bottom of the lower recess; Two conductive shafts which are arranged in a tilting manner towards each other are implanted in the cast-in-place interval, the top of the conductive shaft is exposed at the bottom of the lower recess to form a top end, and the bottom of the conductive shaft is located above the tunnel; the lower recess is filled with an elastic and conical buffer block, and the bottom of the buffer block is in butt joint with the top end; The cover plate layer is pressed on the buffer block and is integrally combined with the buffer block; when the top of the cover plate layer bears the longitudinal load, part of the longitudinal load is conducted to the rock stratum through the plurality of cast-in-place piles, the buffer block elastically buffers the longitudinal load along with the cover plate layer, and part of the longitudinal load is obliquely and dispersedly conducted in the foundation through the conductive shaft.

8. The airport flight zone runway zone tunnel load isolation structure of claim 7, wherein, The top of the buffer block is recessed to form an upper recess, the upper recess is in a conical shape, and the diameter of the upper recess gradually decreases along the direction from top to bottom of the upper recess; the bottom of the cover plate layer is protruded downwards to form a conical protruding block, and the protruding block is movably embedded in the upper recess, so that the cover plate layer is integrally combined with the buffer block. The top end is in a spherical head shape, the top end is exposed at the bottom of the lower recess, and the buffer block is provided with a recessed groove in a spherical shape on both sides of the buffer block, and the top end is movably arranged in the recessed groove.

9. The runway segment tunnel load isolation structure for an airport flight zone according to any one of claims 1 to 4, wherein The pile top structure layer comprises a geogrid layer, a gravel layer and a filling layer laid on the top of the lateral area, and the geogrid layer, the gravel layer and the filling layer are sequentially laid from bottom to top along the pile top structure layer, wherein the geogrid layer covers the top of the mixing interval and the top of the mixing pile; The geogrid layer has a plurality of grid holes arranged in an array, and a plurality of elastic sheets are inserted into the mixing interval, wherein the lower part of the elastic sheet is embedded in the mixing interval and is fixedly arranged, and the upper part of the elastic sheet is exposed on the mixing interval to form a movable end; the movable end passes through the grid hole and extends into the gravel layer, is filled and buried by the gravel layer, and is fixed in the gravel layer.

10. The airport flight zone runway zone tunnel load isolation structure of claim 9, wherein, The lower part of the movable end is sleeved with an elastic ring, the lower part of the elastic ring is fixed in the mixing interval, and the upper part of the elastic ring is exposed on the mixing interval and is filled and fixed in the gravel layer by the gravel layer; The movable end is provided with a through hole, and a connecting rib is arranged in the through hole, wherein the connecting rib passes through the movable ends of the plurality of elastic sheets, connects the movable ends of the plurality of elastic sheets into one body, and is filled and buried by the gravel layer and fixed in the gravel layer.

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