A foundation cushion structure and construction method thereof

Abstract

The present invention discloses a foundation cushion structure and a construction method thereof, wherein the foundation cushion structure comprises: a geocell, comprising a first geotechnical partition and a second geotechnical partition arranged in a grid shape; a geobag, wherein vibration-damping materials are filled inside, and the geobags filled with vibration-damping materials are respectively compacted and stacked in the grid space of the geocell according to height; a plurality of limiting shafts, respectively inserted between a first limiting sleeve of the first geotechnical partition and a second limiting sleeve of the second geotechnical partition, wherein the outer sides of the first limiting sleeve and the second limiting sleeve are respectively laterally movable and plugged with corresponding fixed pins, and a blocking and pushing mechanism matched with the fixed pins is arranged on the limiting shaft. The present invention forms a lateral restraining force for the stacked geobags through the geocell to ensure the stacking stability of the geobags filled with vibration-damping materials, and then effectively forms a reasonable vibration-damping effect through the vibration-damping materials in the stably arranged geobags.

Description

Technical Field

[0001] The invention relates to the technical field of foundation structures in civil engineering, and in particular to a foundation cushion structure and a construction method thereof. Background Art

[0002] Geobags are a type of reinforced soil material widely used in projects such as house foundations, highway subgrades, embankments, channels, slopes and retaining walls. They have the characteristics of high compressive strength, local materials, energy conservation and environmental protection, and economical and practical. As a flexible foundation reinforcement material, the tension of geobags exerts a restraining force on the filler inside them, and the geobags filled with fillers have a high bearing capacity. In addition, due to the damping of the granular material filled inside the geobags, the viscous damping of the geobags themselves, the gaps between the individual geobags, and the contact energy dissipation mechanism, geobags also have a significant vibration reduction effect. In engineering, staggered stacking is often used to improve the overall stability of the geobag assembly. However, the assembly formed by the independent bags has a weak ability to resist lateral shear deformation and is prone to interlayer slippage. In order to improve the stability of stacked geobags, some construction units have begun to use geogrid wrapping to enhance the integrity of geobags. Geogrid wrapping can constrain the horizontal movement of local (slope) geobags, but geogrids are two-dimensional structures and it is difficult to control the interlayer slippage of geobags inside the structure. Geocells are a three-dimensional reinforcement material formed by connecting polymer strips through nodes such as welding, splicing and injection molding. Compared with traditional planar reinforcement materials, geocells exhibit stronger lateral constraints, which can significantly improve the bearing capacity of reinforced structures and reduce deformation.

[0003] Therefore, the research purpose of the present invention is to design a stable foundation cushion structure and its construction method which are equipped with both geocells and geobags, form lateral constraints for the stacked geobags through the geocells, and then effectively form a reasonable vibration reduction effect through the fillers in the stably arranged geobags. Summary of the invention

[0004] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a foundation cushion structure and a construction method thereof, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0005] The technical solution of the present invention is:

[0006] A foundation cushion structure, comprising:

[0007] The geocell comprises a first geotechnical separator and a second geotechnical separator which are arranged in a grid-like distribution, wherein the two ends of the first geotechnical separator are respectively fixed to the upper side of the corresponding soil foundation by corresponding insertion rods, and the upper part of the first geotechnical separator is respectively provided with a plurality of corresponding upper clamping grooves at intervals, and a group of corresponding first limiting sleeves are respectively fixedly connected to the bottom side of the first geotechnical separator on both sides of the upper clamping grooves; the second geotechnical separator is respectively provided with corresponding lower clamping grooves at positions corresponding to the upper clamping grooves of the first geotechnical separator, and the upper side of the second geotechnical separator on both sides of the lower clamping grooves is respectively provided with second limiting sleeves corresponding to the first limiting sleeves; the second geotechnical separator is respectively clamped to the corresponding position of the first geotechnical separator by the cooperation of the lower clamping groove and the upper clamping groove, and the second limiting sleeves are respectively abutted against the upper side of the first limiting sleeve;

[0008] Geobags are filled with vibration-damping materials, and the geobags filled with vibration-damping materials are compacted and stacked in the grid space of the geocell according to their heights;

[0009] A plurality of limit shafts are respectively inserted between the first limit sleeve and the second limit sleeve, and the outer sides of the first limit sleeve and the second limit sleeve are respectively laterally movably inserted with corresponding fixed pins, the bottom end of the limit shaft is pointed, and the limit shaft is provided with a blocking and pushing mechanism matched with the fixed pins; the limit shaft is fixedly inserted into the soil base L1 to form a preliminary limit for the first limit sleeve and the second limit sleeve, so as to form a stable limit for the first geotextile partition and the second geotextile partition, and then the geotextile bags filled with vibration-damping materials are compacted and stacked for installation; the limit shaft is then fixedly inserted into the soil base L2, and the blocking and pushing mechanism drives the fixed pins to be inserted into the corresponding corners of the geotextile bags.

[0010] The blocking and pushing mechanism includes a clearance groove arranged on the limiting shaft, the inner end portions of the fixed pins extend into the clearance grooves respectively, and the clearance grooves are fixedly connected with inclined push blocks corresponding to the inner end portions of the fixed pins. When the limiting shaft moves downward, the inclined push blocks push the fixed pins outward.

[0011] The inner end of the fixed pin arranged on the second limiting sleeve is located outside the inner end of the fixed pin arranged on the first limiting sleeve; the inclined push block fixed to the upper side of the make way groove is located outside the inclined push block fixed to the lower side of the make way groove.

[0012] The ends of the first geotechnical separator are respectively integrally formed with corresponding sleeves, and the insertion rods are respectively inserted into the sleeves.

[0013] The vibration-damping material is one or more of sand, crushed stone, recycled aggregate, and waste rubber particles.

[0014] The outer sides of the first limiting sleeve and the second limiting sleeve are respectively provided with corresponding inserting holes, and the fixing pin can be inserted into the corresponding inserting holes in a movably transverse manner.

[0015] The first geotechnical separator and the second geotechnical separator are both made of reinforced HDPE sheet material.

[0016] The first limiting sleeve and the second limiting sleeve are respectively integrally formed and connected to the first geotechnical separator and the second geotechnical separator.

[0017] A construction method of the foundation cushion structure as described above comprises the following specific construction steps:

[0018] S1, fixing the two ends of the first geotechnical separator to the upper side of the corresponding soil foundation by inserting rods;

[0019] S2, clamping the second geotechnical separator to the corresponding position of the first geotechnical separator respectively by cooperating the lower clamping groove on the second geotechnical separator with the upper clamping groove on the first geotechnical separator;

[0020] S3, fixedly inserting the limiting shaft into the soil foundation L1 to form a preliminary limiting position for the first limiting sleeve and the second limiting sleeve;

[0021] S4, compacting and stacking the geobags filled with vibration-damping materials;

[0022] S5, the limiting shaft is fixedly inserted into the soil foundation L2, and the blocking and pushing mechanism drives the fixing pins to be inserted into the corresponding corners of the geotextile bag respectively.

[0023] Advantages of the present invention:

[0024] 1) The present invention is provided with geocells and geobags at the same time, and the geocells are used to form lateral restraints for the stacked geobags to ensure the stacking stability of the geobags filled with vibration-damping materials, and then the vibration-damping materials in the stably arranged geobags effectively form a reasonable vibration-damping effect.

[0025] 2) The geocell of the present invention is composed of a first geotechnical partition provided with an upper clamping groove and a second geotechnical partition provided with a lower clamping groove. The second geotechnical partition is clamped to the corresponding position of the first geotechnical partition by the cooperation of the lower clamping groove and the upper clamping groove, and the overall assembly of the geocell is convenient. After the second geotechnical partition is clamped to the first geotechnical partition to form the geocell, the second limiting sleeve fixed to the second geotechnical partition is respectively abutted against the upper side of the first limiting sleeve fixed to the first geotechnical partition; and then the first limiting sleeve and the second limiting sleeve are preliminarily fixed by the limiting shaft to ensure the structural stability of the geocell after convenient assembly, thereby ensuring the feasibility of the compaction and stacking operation of the geobag filled with vibration-damping material in the geocell.

[0026] 3) The outer sides of the first limit sleeve and the second limit sleeve of the present invention are respectively laterally movably connected with corresponding fixed pins, and the limit shaft is provided with a blocking and pushing mechanism matched with the fixed pins. After the geobags filled with vibration-damping materials are compacted and stacked, the limit shaft is further fixedly inserted into the soil base, so that the blocking and pushing mechanism drives the fixed pins to be inserted into the corresponding corners of the geobags, so as to further form a stable limit for the compacted and stacked geobags, thereby further ensuring the stacking stability of the geobags filled with vibration-damping materials, and further ensuring the vibration-damping effect of the present invention.

[0027] 4) The blocking and pushing mechanism of the present invention comprises a clearance groove arranged on the limiting shaft, the inner end portions of the fixed pins extend into the clearance grooves respectively, and the clearance grooves are fixedly connected with inclined push blocks corresponding to the inner end portions of the fixed pins. When the limiting shaft moves downward, the inclined push blocks push the fixed pins outward to insert the fixed pins into the corresponding corners of the geobags respectively, thereby effectively ensuring the practical effect of the present invention.

[0028] 5) The inner end of the fixed pin arranged on the second limiting sleeve is located outside the inner end of the fixed pin arranged on the first limiting sleeve, and the inclined push block fixed to the upper side of the give way groove is located outside the inclined push block fixed to the lower side of the give way groove, so as to ensure that the inclined push block fixed to the lower side of the give way groove can avoid the fixed pin arranged on the second limiting sleeve and smoothly move downward to drive the fixed pin arranged on the first limiting sleeve, thereby further effectively ensuring the practical effect of the present invention.

[0029] 6) Due to the structural adjustment of the present invention, the overall construction convenience of the present invention can be greatly improved, and the controllability of the overall construction of the present invention can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 It is a top view of the present invention.

[0032] Figure 3 It is a cross-sectional view of the present invention.

[0033] Figure 4 A schematic diagram of the structure in which the fixing pin is driven to be inserted into the geobag.

[0034] Figure 5 It is a schematic diagram of the structure of the first geomembrane.

[0035] Figure 6 Schematic diagram of the structure of the second geomembrane.

[0036] In the accompanying drawings: geocell 1, first geotechnical partition 101, upper clamping groove 1011, second geotechnical partition 102, lower clamping groove 1021, cutting rod 2, soil base 3, first limiting sleeve 4, second limiting sleeve 5, geobag 6, vibration damping material 7, limiting shaft 8, fixing pin 9, blocking and pushing mechanism 10, giving way groove 1001, inclined push block 1002, sleeve 11. DETAILED DESCRIPTION

[0037] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0038] Embodiment 1:

[0039] refer to Figure 1-6 , a foundation cushion structure, comprising:

[0040] The geocell 1 comprises a first geotechnical separator 101 and a second geotechnical separator 102 arranged in a grid shape, wherein the two ends of the first geotechnical separator 101 are respectively fixed to the upper side of the corresponding soil foundation 3 through corresponding insertion rods 2, and the upper part of the first geotechnical separator 101 is respectively provided with a plurality of corresponding upper clamping grooves 1011 at intervals, and the bottom side of the first geotechnical separator 101 on both sides of the upper clamping grooves 1011 is respectively fixed with a group of corresponding first limiting sleeves 4; the second geotechnical separator 102 is connected to the first geotechnical separator 101 at the same time as the first geotechnical separator 101. The corresponding lower clamping grooves 1021 are respectively arranged at the positions corresponding to the upper clamping grooves 1011 of the plate 101, and the upper sides of the second geotechnical separators 102 on both sides of the lower clamping grooves 1021 are respectively provided with second limiting sleeves 5 corresponding to the first limiting sleeves 4; the second geotechnical separators 102 are respectively clamped to the corresponding positions of the first geotechnical separators 101 through the cooperation of the lower clamping grooves 1021 and the upper clamping grooves 1011, and the second limiting sleeves 5 are respectively abutted against the upper sides of the first limiting sleeves 4;

[0041] Geobags 6 are filled with vibration-damping materials 7, and the geobags 6 filled with vibration-damping materials 7 are compacted and stacked in the grid space of the geocell 1 according to their heights;

[0042] A plurality of limit shafts 8 are respectively inserted between the first limit sleeve 4 and the second limit sleeve 5, and the outer sides of the first limit sleeve 4 and the second limit sleeve 5 are respectively laterally movably inserted with corresponding fixed pins 9, the bottom end of the limit shaft 8 is pointed, and the limit shaft 8 is provided with a blocking and pushing mechanism 10 adapted to the fixed pin 9; the limit shaft 8 is fixedly inserted into the soil base 3 L1 to form a preliminary limit for the first limit sleeve 4 and the second limit sleeve 5, so as to form a stable limit for the first geotextile partition 101 and the second geotextile partition 102, and then the geotextile bags 6 filled with vibration-damping materials 7 are compacted and stacked for installation; the limit shaft 8 is then fixedly inserted into the soil base 3 L2, and the blocking and pushing mechanism 10 drives the fixed pins 9 to be inserted into the corresponding corners of the geotextile bags 6.

[0043] The present invention cooperates with the geocell 1 and the geobag 6, and the geocell 1 forms a lateral restraint force for the stacked geobags 6 to ensure the stacking stability of the geobags 6 filled with the vibration-damping material 7, and then effectively forms a reasonable vibration-damping effect through the vibration-damping material 7 in the stably arranged geobag 6.

[0044] The geocell 1 of the present invention is composed of a first geotechnical separator 101 provided with an upper clamping groove 1011 and a second geotechnical separator 102 provided with a lower clamping groove 1021. The second geotechnical separator 102 is clamped to the corresponding position of the first geotechnical separator 101 by the cooperation of the lower clamping groove 1021 and the upper clamping groove 1011, and the overall assembly convenience of the geocell 1 is high. After the second geotechnical separator 102 is clamped to the first geotechnical separator 101 to form the geocell 1, the second limiting sleeve 5 fixed to the second geotechnical separator 102 is respectively abutted against the upper side of the first limiting sleeve 4 fixed to the first geotechnical separator 101; and then the first limiting sleeve 4 and the second limiting sleeve 5 are preliminarily fixed by the limiting shaft 8 to ensure the structural stability of the geocell 1 after convenient assembly, thereby ensuring the feasibility of the compaction and stacking operation of the geobag 6 filled with the damping material 7 in the geocell 1.

[0045] The outer sides of the first limiting sleeve 4 and the second limiting sleeve 5 of the present invention are respectively laterally movably connected with corresponding fixed pins 9, and the limiting shaft 8 is provided with a blocking and pushing mechanism 10 adapted to the fixed pins 9. After the geobags 6 filled with the vibration-damping material 7 are compacted and stacked for installation, the limiting shaft 8 is further fixedly inserted into the soil base 3, so that the blocking and pushing mechanism 10 drives the fixed pins 9 to be inserted into the corresponding corners of the geobags 6, so as to further form a stable limit for the geobags 6 after compaction and stacking, thereby further ensuring the stacking stability of the geobags 6 filled with the vibration-damping material 7, so as to further ensure the vibration reduction effect of the present invention.

[0046] The blocking and pushing mechanism 10 includes a clearance groove 1001 arranged on the limiting shaft 8, and the inner end portions of the fixed pins 9 extend into the clearance grooves 1001 respectively. The clearance grooves 1001 are fixedly connected with inclined push blocks 1002 corresponding to the inner end portions of the fixed pins 9. When the limiting shaft 8 moves downward, the inclined push blocks 1002 push the fixed pins 9 outward.

[0047] The inner end of the fixing pin 9 arranged on the second limiting sleeve 5 is located outside the inner end of the fixing pin 9 arranged on the first limiting sleeve 4; the inclined push block 1002 fixed to the upper side of the giving way groove 1001 is located outside the inclined push block 1002 fixed to the lower side of the giving way groove 1001.

[0048] During the downward movement of the limiting shaft 8, the inclined push block 1002 pushes the fixed pin 9 outward to insert the fixed pin 9 into the corners of the corresponding geobag 6, thereby effectively ensuring the practical effect of the present invention. Since the inner end of the fixed pin 9 arranged on the second limiting sleeve 5 is located outside the inner end of the fixed pin 9 arranged on the first limiting sleeve 4, the inclined push block 1002 fixed to the upper side of the clearance groove 1001 is located outside the inclined push block 1002 fixed to the lower side of the clearance groove 1001, so as to ensure that the inclined push block 1002 fixed to the lower side of the clearance groove 1001 can avoid the fixed pin 9 arranged on the second limiting sleeve 5, and smoothly descend to drive the fixed pin 9 arranged on the first limiting sleeve 4, thereby further effectively ensuring the practical effect of the present invention.

[0049] The ends of the first geotechnical separator 101 are respectively integrally formed with corresponding sleeves 11, and the insertion rods 2 are respectively inserted into the sleeves 11. The vibration-damping material 7 is made of sand or crushed stone.

[0050] The outer sides of the first limiting sleeve 4 and the second limiting sleeve 5 are respectively provided with corresponding inserting holes, and the fixing pin 9 can be inserted into the corresponding inserting holes in a movably transverse manner.

[0051] The first geomembrane 101 and the second geomembrane 102 are both made of reinforced HDPE sheet material.

[0052] The first limiting sleeve 4 and the second limiting sleeve 5 are respectively integrally formed and connected to the first geotechnical separator 101 and the second geotechnical separator 102 .

[0053] Embodiment 2:

[0054] A construction method of a foundation cushion structure as described in Example 1 comprises the following specific construction steps:

[0055] S1, fixing the two ends of the first geotechnical separator 101 to the upper side of the corresponding soil foundation 3 by inserting rods 2;

[0056] S2, clamping the second geotechnical separator 102 to the corresponding position of the first geotechnical separator 101 respectively by cooperating the lower clamping groove 1021 on the second geotechnical separator 102 with the upper clamping groove 1011 on the first geotechnical separator 101;

[0057] S3, the limiting shaft 8 is fixedly inserted into the soil foundation 3 L1 to form a preliminary limiting position for the first limiting sleeve 4 and the second limiting sleeve 5;

[0058] S4, compacting and stacking the geobags 6 filled with the vibration-damping material 7;

[0059] S5, the limiting shaft 8 is fixedly inserted into the soil foundation 3 L2, and the blocking and pushing mechanism 10 drives the fixing pins 9 to be inserted into the corresponding corners of the geotextile bag 6 respectively.

[0060] Through the structural adjustment of the present invention, the overall construction convenience of the present invention can be greatly improved, and the controllability of the overall construction of the present invention can be ensured.

[0061] The above description is only an implementation mode of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A foundation cushion structure, characterized in that: include: The geocell (1) comprises a first geotechnical separator (101) and a second geotechnical separator (102) arranged in a grid-like distribution, wherein the two ends of the first geotechnical separator (101) are respectively fixed to the upper side of the corresponding soil base (3) through corresponding insertion rods (2), and the upper part of the first geotechnical separator (101) is respectively provided with a plurality of corresponding upper clamping grooves (1011) at intervals, and the bottom side of the first geotechnical separator (101) on both sides of the upper clamping grooves (1011) is respectively fixedly connected with a group of corresponding first limiting sleeves (4); the second geotechnical separator (102) is connected to the first geotechnical separator at the same time as the first geotechnical separator. Corresponding lower clamping grooves (1021) are respectively arranged at positions corresponding to the upper clamping grooves (1011) of the geotechnical separator (101), and second limiting sleeves (5) corresponding to the first limiting sleeves (4) are respectively arranged on the upper sides of the second geotechnical separator (102) on both sides of the lower clamping grooves (1021); the second geotechnical separator (102) is respectively clamped to the corresponding positions of the first geotechnical separator (101) through the cooperation of the lower clamping grooves (1021) and the upper clamping grooves (1011), and the second limiting sleeves (5) are respectively abutted against the upper sides of the first limiting sleeves (4); A geobag (6) having a vibration-damping material (7) filled therein, wherein the geobags (6) filled with the vibration-damping material (7) are compacted and stacked in the grid space of the geocell (1) according to height; A plurality of limit shaft members (8) are respectively inserted between the first limit sleeve (4) and the second limit sleeve (5); the outer sides of the first limit sleeve (4) and the second limit sleeve (5) are respectively laterally movably inserted with corresponding fixed pins (9); the bottom end of the limit shaft member (8) is arranged in a pointed shape, and the limit shaft member (8) is provided with a blocking and pushing mechanism (10) adapted to the fixed pin (9); the limit shaft member (8) is fixedly inserted into the soil foundation (3); The first limiting sleeve (4) and the second limiting sleeve (5) are initially limited to form a stable limit for the first geotechnical separator (101) and the second geotechnical separator (102), and then the geotextile bags (6) filled with the vibration-damping material (7) are compacted and stacked for installation; the limiting shaft (8) is fixedly inserted into the soil base (3) inner L2, and the blocking and pushing mechanism (10) drives the fixing pins (9) to be respectively inserted into the corners of the corresponding geotextile bags (6).

2. A foundation cushion structure according to claim 1, characterized in that: The blocking and pushing mechanism (10) comprises a clearance groove (1001) arranged on the limiting shaft (8), the inner end portions of the fixed pins (9) respectively extend into the clearance grooves (1001), and an inclined surface pushing block (1002) corresponding to the inner end portions of the fixed pins (9) is fixedly connected to the clearance grooves (1001), and when the limiting shaft (8) moves downward, the inclined surface pushing block (1002) pushes the fixed pins (9) outward.

3. A foundation cushion structure according to claim 2, characterized in that: The inner end of the fixed pin (9) provided on the second limiting sleeve (5) is located outside the inner end of the fixed pin (9) provided on the first limiting sleeve (4); the inclined push block (1002) fixedly connected to the upper side of the clearance groove (1001) is located outside the inclined push block (1002) fixedly connected to the lower side of the clearance groove (1001).

4. A foundation cushion structure according to claim 1, characterized in that: The ends of the first geotechnical separator (101) are respectively integrally formed with corresponding sleeves (11), and the insertion rods (2) are respectively inserted into the sleeves (11).

5. A foundation cushion structure according to claim 1, characterized in that: The vibration-damping material (7) is one or more of sand, crushed stone, recycled aggregate, and waste rubber particles.

6. A foundation cushion structure according to claim 1, characterized in that: The outer sides of the first limiting sleeve (4) and the second limiting sleeve (5) are respectively provided with corresponding insertion holes, and the fixed plug pin (9) is laterally movable and inserted into the corresponding insertion holes.

7. A foundation cushion structure according to claim 1, characterized in that: The first geotechnical separator (101) and the second geotechnical separator (102) are both made of reinforced HDPE sheet material.

8. A foundation cushion structure according to claim 7, characterized in that: The first limiting sleeve (4) and the second limiting sleeve (5) are respectively integrally formed and connected to the first geotechnical separator (101) and the second geotechnical separator (102).

9. A construction method of a foundation cushion structure according to any one of claims 1 to 8, characterized in that: The specific construction steps include the following: S1, fixing the two ends of the first geotechnical separator (101) to the upper side of the corresponding soil foundation (3) by inserting rods (2); S2, clamping the second geotechnical separator (102) to the corresponding position of the first geotechnical separator (101) by cooperating the lower clamping groove (1021) on the second geotechnical separator (102) with the upper clamping groove (1011) on the first geotechnical separator (101); S3, fixedly inserting the limiting shaft (8) into the soil foundation (3) at L1 to form a preliminary limiting position for the first limiting sleeve (4) and the second limiting sleeve (5); S4, compacting and stacking the geobags (6) filled with the vibration-damping material (7); S5, the limiting shaft (8) is fixedly inserted into L2 of the soil base (3), and the blocking and pushing mechanism (10) drives the fixing pins (9) to be respectively inserted into the corners of the corresponding geotextile bags (6).

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