Barbed micropiles for soil reinforcement

A barbed micropile for soil reinforcement at a target location and a method for soil reinforcement at a target location. The barbed micropile includes a conical-head pipe which comprises a hollow rod, a conical head, and a first plurality of T-shaped elements mounted around an outer surface of the hollow rod. The method may include generating a cavity at the target location, filling the cavity with grout, generating a well at the target location by inserting a barbed micropile into the ground at the target location, filling a space between the barbed micropile and the well's wall with grout, and filling an inner chamber of the hollow rod.

TECHNICAL FIELD

The present disclosure generally relates to civil and geotechnical engineering, and particularly relates to soil reinforcement for construction purposes. The present disclosure more particularly relates to a method and a system for soil reinforcement by utilizing micropiles.

BACKGROUND

A pile is a relatively heavy beam of timber, concrete, or steel that may extend into the earth and may serve as a foundation or a support for a structure such as a building or a bridge. Piles may be divided into two general categories: displacement piles and replacement piles. Displacement piles are members that may be driven or vibrated into the ground, and to thereby, may displace a surrounding soil laterally during installation. Replacement piles may be placed or constructed within a previously drilled hole, and to thereby, may replace an excavated ground that is formed by the drilled hole.

A micropile may be a small-diameter (typically less than 300 millimeters) replacement or displacement pile. Micropiles may be used mainly for foundation support of a structure to resist static and seismic loading conditions. Over the last several years, micropiles have become popular for use in commercial buildings and transportation structures. Micropiles may also be used as in-situ reinforcements for slope and excavation stability. Micropiles may be able to withstand axial as well as lateral loads and may be considered as a substitute for conventional piles or as one component in a composite soil/pile mass, depending on the design concept employed. Micropiles may be installed by methods that may cause minimal disturbance to structure, soil, and the environment. The small size of machineries required for installing micropiles may permit installation of micropiles in locations having limited access and low head room. This advantage may permit the micropiles to be installed within existing structures.

Installing and implementing a micropile may be done through a standard method which may include six following steps: 1) excavation or installation of a casing with a rod, 2) continuing the excavation to reach a final depth, 3) removing the rod, 4) placing rebars (short for reinforcing bars) and injecting a first round of grout using a tremie pipe, 5) removing a casing partially or completely and injecting a second round of grout, and 6) complementing the micropile.

Utilizing conventional micropiles and methods of installing and implementing them may be associated with some drawbacks. For example, the aforementioned method for installing and implementing a micropile may be time consuming and expensive. Furthermore, conventional micropiles may not be able to reinforce a soil appropriately. There is, therefore, a need for micropiles that are able to reinforce a soil appropriately and also there is a need for a method of installing and implementing a micropile that is not expensive and time consuming.

SUMMARY

According to one or more exemplary embodiments of the present disclosure, a barbed micropile for soil reinforcement at a target location is disclosed. In an exemplary embodiment, the barbed micropile may include a conical-head pipe configured to be inserted into a ground at the target location. In an exemplary embodiment, the conical-head pipe may include a hollow rod, a conical head, and a first plurality of T-shaped elements. In an exemplary embodiment, the hollow rod may include an inner chamber. In an exemplary embodiment, the inner chamber of the hollow rod may be configured to contain grout.

In an exemplary embodiment, the conical head may be attached to a bottom end of the hollow rod. In an exemplary embodiment, the conical head may include a sharp tip. In an exemplary embodiment, the conical head may be configured to facilitate penetration of the conical-head pipe into the ground. In an exemplary embodiment, the first plurality of T-shaped elements may be mounted around an outer surface of the hollow rod.

In an exemplary embodiment, the first plurality of T-shaped elements may be configured to facilitate penetration of the conical-head pipe into the ground. In an exemplary embodiment, each respective T-shaped element of the first plurality of T-shaped elements may include a respective rectangular-shaped plate and a respective triangular-shaped plate. In an exemplary embodiment, the respective rectangular-shaped plate may include a respective rectangular face.

In an exemplary embodiment, the respective triangular-shaped plate may include a first edge and a second edge. In an exemplary embodiment, the triangular-shaped plate may be attached at the first edge of the triangular-shaped plate to the rectangular face of the rectangular-shaped plate. In an exemplary embodiment, the triangular-shaped plate may be attached to the outer surface of the hollow rod at the second edge of the triangular-shaped plate.

In an exemplary embodiment, the first plurality of T-shaped elements may include a first T-shaped element and a second T-shaped element in front of each other, a third T-shaped element and a fourth T-shaped element in front of each other, and a fifth T-shaped element and a sixth T-shaped element in front of each other.

In an exemplary embodiment, the first T-shaped element and the second T-shaped element may be attached to opposite sides of the hollow rod. In an exemplary embodiment, the first T-shaped element and the second T-shaped element may be attached to opposite sides of the hollow rod. In an exemplary embodiment, the fifth T-shaped element and the sixth T-shaped element may be attached to opposite sides of the hollow rod.

In an exemplary embodiment, the conical-head pipe may further include a thorough injection hole on the outer surface of the hollow rod. In an exemplary embodiment, the thorough injection hole may be configured to allow grout discharge from the inner chamber of the hollow rod.

In an exemplary embodiment, the barbed micropile may further include a plurality of pipes comprising a first pipe. In an exemplary embodiment, a bottom end of the first pipe may be attached to a top end of the conical-head pipe. In an exemplary embodiment, each pair of two successive pipes from the plurality of pipes may include a second pipe and a third pipe. In an exemplary embodiment, a bottom end of the third pipe may be attached to a top end of the second pipe.

In an exemplary embodiment, each pipe from the plurality of pipes comprising a respective plurality of T-shaped elements, each respective plurality of T-shaped elements comprising a respective first T-shaped element, a respective second T-shaped element, a respective third T-shaped element, and a respective fourth T-shaped element, the respective first T-shaped element and the respective second T-shaped element being in front of each other, and the respective third T-shaped element and the respective fourth T-shaped element being in front of each other.

In an exemplary embodiment, the conical-head pipe may further include a cylindrical elastic casing. In an exemplary embodiment, the cylindrical elastic casing may be mounted onto the hollow rod and at an opening of the thorough injection hole. In an exemplary embodiment, the cylindrical elastic casing may cover the thorough injection hole.

In an exemplary embodiment, the cylindrical elastic casing configured to allow grout discharge from the inner chamber of the hollow rod through the thorough injection hole and prevent grout penetration into the inner chamber of the hollow rod through the thorough injection hole. In an exemplary embodiment, an inner diameter of cylindrical elastic casing corresponds to an outer diameter of the hollow rod.

According to one or more exemplary embodiments of the present disclosure, a method for soil reinforcement at a target location is disclosed. In an exemplary embodiment, the method may include generating a cavity at the target location, filling the cavity with grout, generating a well at the target location by inserting a barbed micropile into the ground at the target location by driving a conical-head pipe of the barbed micropile into the ground at a bottom of the cavity, filling a space between the barbed micropile and the well's wall with grout by flowing the grout from the cavity into the space between the barbed micropile and the well's wall, and filling an inner chamber of the hollow rod by injecting grout into the barbed micropile.

In an exemplary embodiment, the method may further include discharging grout from the inner chamber of the hollow rod into the space between the barbed micropile and the well's wall by providing a thorough injection hole on the outer surface of the hollow rod. In an exemplary embodiment, the method may further include preventing grout penetration from the space between the barbed micropile and the well's wall into the inner chamber of the hollow rod by covering the thorough injection hole utilizing a cylindrical elastic casing.

In an exemplary embodiment, covering the thorough injection hole utilizing a cylindrical elastic casing may include mounting the cylindrical elastic casing onto the hollow rod and at an opening of the thorough injection hole. In an exemplary embodiment, inserting the conical-head pipe into the ground at the target location may include driving the conical head of the conical-head pipe into the ground by utilizing a mechanical hammer.

In an exemplary embodiment, the method may further include installing a plurality of pipes onto the conical-head pipe through attaching a bottom end of a first pipe of the plurality of pipes to a top end of the conical-head pipe and attaching a bottom end of a third pipe of each pair of two successive pipes from the plurality of pipes to a top end of a second pipe of the each pair of two successive pipes.

DETAILED DESCRIPTION

The following detailed description is presented to enable a person skilled in the art to make and use the methods and devices disclosed in exemplary embodiments of the present disclosure. For purposes of explanation, specific nomenclature is set forth to provide a thorough understanding of the present disclosure. However, it will be apparent to one skilled in the art that these specific details are not required to practice the disclosed exemplary embodiments. Descriptions of specific exemplary embodiments are provided only as representative examples. Various modifications to the exemplary implementations will be readily apparent to one skilled in the art, and the general principles defined herein may be applied to other implementations and applications without departing from the scope of the present disclosure. The present disclosure is not intended to be limited to the implementations shown, but is to be accorded the widest possible scope consistent with the principles and features disclosed herein.

Herein is disclosed a barbed micropile for soil reinforcement. An exemplary barbed micropile includes a conical-head pipe and a plurality of pipes. The conical-head pipe has a conical head that helps conical-head pipe to be inserted into the ground and penetrate into soil more easily. The conical head-pipe and the plurality of pipes includes a plurality of T-shaped elements on their outer surfaces. The plurality of T-shaped elements on the outer surface of the conical head-pipe and the plurality of pipes help the conical head-pipe and the plurality of pipes to be inserted into the ground and penetrate into soil more easily. Each of the conical head-pipe and the plurality of pipes includes a thorough injection hole on its outer surface. After that the conical head-pipe and the plurality of pipes are inserted into the ground and a well is formed in the ground an amount of grout is pumped into the conical head-pipe and the plurality of pipes. The pumped grout is discharged into the well through the thorough injection holes on the outer surfaces of the conical head-pipe and the plurality of pipes.

FIG. 1Ashows a perspective view of a barbed micropile100, consistent with one or more exemplary embodiments of the present disclosure.FIG. 1Bshows a side view of barbed micropile100in a scenario in which barbed micropile100is inserted into the ground at a target location, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 1AandFIG. 1B, in an exemplary embodiment, barbed micropile100may include a conical-head pipe102.FIG. 2shows a perspective view of conical-head pipe102, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 2, in an exemplary embodiment, conical-head pipe102may include a hollow rod122and a conical head124. In an exemplary embodiment, hollow rod122may include an inner chamber1222. In an exemplary embodiment, inner chamber1222of hollow rod122may be filled with grout. In an exemplary embodiment, conical head124may be attached to a bottom end1224of hollow rod122. In an exemplary embodiment, conical head124may include a sharp tip1242. In an exemplary embodiment, sharp tip1242may refer to a point at a bottom end of conical head124that may be able to cut or pierce a surface. In an exemplary embodiment, conical head124may facilitate penetration of conical-head pipe102into soil. In an exemplary embodiment, exemplary conical head124may make it easier for an operator and/or a hammering machine to insert conical-head pipe102to the ground. In an exemplary embodiment, due to sharpness of sharp tip1242at a bottom end of conical head124, conical head124may be penetrated into soil with applying a relatively low force and consequently a lower energy may be needed for an operator and/or a hammering machine to insert conical-head pipe102into the ground.

In an exemplary embodiment, conical-head pipe102may further include a plurality of T-shaped elements mounted around on an outer surface of hollow rod122.FIG. 3shows a perspective view of conical-head pipe102, consistent with one or more exemplary embodiments of the present disclosure. In an exemplary embodiment, the plurality of T-shaped elements may include a plurality of pairs of T-shaped element such as a first pair of T-shaped elements302, a second pair of T-shaped elements304, and a third pair of T-shaped elements306. In an exemplary embodiment, each respective pair of T-shaped elements from the plurality of pair of T-shaped elements may include two respective T-shaped elements. For example, first pair of T-shaped elements302may include a first T-shaped element322and a second T-shaped element324. In an exemplary embodiment, second pair of T-shaped elements304may include a third T-shaped element342and a fourth T-shaped element344. In an exemplary embodiment, third pair of T-shaped elements306may include a fifth T-shaped element362and a sixth T-shaped element364. In an exemplary embodiment, respective T-shaped elements of each respective pair of T-shaped elements from the plurality of pair of T-shaped elements may be attached in front of each other to the outer surface of hollow rod122. In an exemplary embodiment, the plurality of T-shaped elements may include more T-shaped elements in addition to first T-shaped element322, second T-shaped element324, third T-shaped element342, fourth T-shaped element344, fifth T-shaped element362, and sixth T-shaped element364. In an exemplary embodiment, all T-shaped elements of the plurality of T-shaped elements may be substantially similar in size and shape to each other.

FIG. 4Ashows first pair of T-shaped elements302, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 4A, in an exemplary embodiment, first T-shaped element322may include a first rectangular-shaped plate402and a first triangular-shaped plate404. In an exemplary embodiment, first rectangular-shaped plate402may include a first rectangular face422. In an exemplary embodiment, first triangular-shaped plate404may include a first edge442and a second edge444. In an exemplary embodiment, first edge442of first triangular-shaped plate404may be attached to first rectangular face422of first rectangular-shaped plate402. In an exemplary embodiment, first edge442of first triangular-shaped plate404may be attached to first rectangular face422of first rectangular-shaped plate402through a welding process. However, in an exemplary embodiment, first triangular-shaped plate404and first rectangular-shaped plate402may be manufactured seamlessly to create an integrated part. In an exemplary embodiment, second edge444of first rectangular-shaped plate402may be attached to the outer surface of hollow rod122. In an exemplary embodiment, second T-shaped element324may include a second rectangular-shaped plate406and a second triangular-shaped plate408. In an exemplary embodiment, second rectangular-shaped plate406may include a second triangular face462. In an exemplary embodiment, second triangular-shaped plate408may include a third edge482and a fourth edge484. In an exemplary embodiment, third edge482of second triangular-shaped plate408may be attached to second rectangular face462of second rectangular-shaped plate406. In an exemplary embodiment, fourth edge484of second triangular-shaped plate408may be attached to the outer surface of hollow rod122.

In an exemplary embodiment, first T-shaped element322and second T-shaped element324may be attached in front of each other to outer surface of hollow rod122. In an exemplary embodiment, an exemplary first T-shaped element being attached in front of an exemplary second T-shaped element to outer surface of hollow rod122may refer to an exemplary first T-shaped element and an exemplary second T-shaped element being attached to opposite sides of outer surface of hollow rod122in such a way that a main plane of an exemplary first triangular-shaped plate of an exemplary first T-shaped element is aligned with a main plane of an exemplary second triangular-shaped plate of an exemplary second T-shaped element. For example, first T-shaped element322and second T-shaped element324may be attached to opposite sides of outer surface of hollow rod122in such a way that a main plane442of first triangular-shaped plate404is aligned with a main plane482of second triangular-shaped plate408. In an exemplary embodiment, third T-shaped element342and fourth T-shaped element344may be attached in front of each other to outer surface of hollow rod122. In an exemplary embodiment, fifth T-shaped element362and sixth T-shaped element364may be attached in front of each other to outer surface of hollow rod122.

FIG. 4Bshows a top view of conical-head pipe102, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 4B, in an exemplary embodiment, first pair of T-shaped elements302and second pair of T-shaped elements304may be mounted around the outer surface of hollow rod122in such a way that a main plane326of first pair of T-shaped elements302is substantially perpendicular to a main plane346of second pair of T-shaped elements304. In an exemplary embodiment, third pair of T-shaped elements306may be mounted around the outer surface of hollow rod122in such a way that a main plane366of third pair of T-shaped elements306defines a substantially 45° angle with main plane326of first pair of T-shaped elements302and a substantially 45° angle with main plane346of second pair of T-shaped elements304. In an exemplary embodiment, it may be understood that the aforementioned arrangement of first pair of T-shaped elements302, second pair of T-shaped elements304, and third pair of T-shaped elements306may provide significant benefits. For example, the aforementioned arrangement of first pair of T-shaped elements302, second pair of T-shaped elements304, and third pair of T-shaped elements306may help conical-head pipe102to create a well inside the ground when it is inserted into the ground. As shown inFIG. 4AandFIG. 4B, in an exemplary embodiment, a width414of a T-shaped element from the plurality of T-shaped elements (similar to T-shaped elements304,306, etc.) may be between 0.5 and 0.9 of a diameter412of hollow rod122. In an exemplary embodiment, width414of a T-shaped element from the plurality of T-shaped elements may be 0.8 of diameter412of hollow rod122. For example, a width of second T-shaped element324may be 0.8 of diameter412of hollow rod122.

As further shown inFIG. 2, in an exemplary embodiment, conical-head pipe102may further include a thorough injection hole1226on the outer surface of hollow rod122. In an exemplary embodiment, thorough injection hole1226may provide a facility for conical-head pipe102to help grout to discharge from inner chamber1222of hollow rod122to an outer space of conical-head pipe102. In an exemplary embodiment, when conical-head pipe102is inserted into the ground, grout may be injected into the created well around the conical-head pipe102by injecting the grout into inner chamber1222of hollow rod122. In an exemplary embodiment, grout may be discharged from inner chamber1222of hollow rod122to the created well around conical-head pipe102through thorough injection hole1226and fill the created well. In an exemplary embodiment, grout may be discharged through thorough injection hole1226due to higher fluid pressure of grout inside inner chamber1222of hollow rod122

In an exemplary embodiment, conical-head pipe102may further include a cylindrical elastic casing202. In an exemplary embodiment, cylindrical elastic casing202may be made up of a deformable and flexible elastic material which may allow cylindrical elastic casing202to deform in response to external forces. In an exemplary embodiment, an inner dimeter of cylindrical elastic casing202may coincide with or correspond to an outer diameter of hollow rod122. In an exemplary embodiment, an inner dimeter of cylindrical elastic casing202may be 0.2 mm greater than an outer diameter of hollow rod122. In an exemplary embodiment, cylindrical elastic casing202may be mounted onto hollow rod122and at a location of thorough injection hole1226. In an exemplary embodiment, cylindrical elastic casing202may completely cover thorough injection hole1226. In an exemplary embodiment, cylindrical elastic casing202may provide significant benefits. For example, cylindrical elastic casing202may allow grout discharge from inner chamber1222of hollow rod122into the outer space of conical-head pipe102. In an exemplary embodiment, cylindrical elastic casing202may also prevent grout penetration from the outer space of conical-head pipe102into inner chamber1222of hollow rod122through thorough injection hole1226. In an exemplary embodiment, when cylindrical elastic casing202completely covers thorough injection hole1226, grout may be prevented from penetration into inner chamber1222of hollow rod122through thorough injection hole1226due to the fact that cylindrical elastic casing202may block thorough injection hole1226. In an exemplary embodiment, when conical-head pipe102is inserted to the ground, grout may be pumped into inner chamber1222of hollow rod122to fill a created well around conical-head pipe102. In an exemplary embodiment, the pumped grout may be discharged from inner chamber1222of hollow rod122through thorough injection hole1226. In an exemplary embodiment, it may be understood that due to the deformability and flexibility of cylindrical elastic casing202, cylindrical elastic casing202may be deformed against a pressure of the pumped grout and, thereby, thorough injection hole1226may be unblocked and allow the pumped grout to discharge from inner chamber1222of hollow rod122. Furthermore, cylindrical elastic casing202may prevent the grout from returning into inner chamber1222of hollow rod122through thorough injection hole1226. In an exemplary embodiment, cylindrical elastic casing202may be made up of a flexible elastic. In an exemplary embodiment, the flexibility of cylindrical elastic casing202may provide a facility for cylindrical elastic casing202that allow grout to discharge from inner chamber1222of hollow rod122through thorough injection hole1226but does not allow the grout to return to inner chamber1222of hollow rod122. In an exemplary embodiment, it may be understood that cylindrical elastic casing202may act as a check valve that may allow grout to discharge from inner chamber1222of hollow rod122through thorough injection hole1226but does not allow the grout to return to inner chamber1222of hollow rod122.

As further shown inFIG. 1AandFIG. 1B, in an exemplary embodiment, barbed micropile100may further include a plurality of pipes including a first pipe104. In an exemplary embodiment, the plurality of pipes may be installed onto the conical-head pipe102. In an exemplary embodiments, all of the plurality of pipes may be similar in structure and functionality.FIG. 5shows first pipe104, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 5, in an exemplary embodiment, first pipe104may include a first hollow rod142. In an exemplary embodiment, first hollow rod142may include a first inner chamber1422. In an exemplary embodiment, first inner chamber1422of first hollow rod142may be filled with grout. In an exemplary embodiment, first pipe104may further include a first plurality of T-shaped elements mounted around an outer surface of first hollow rod142. In an exemplary embodiment, first plurality of T-shaped elements may include a first plurality of pair of T-shaped elements such as a fourth pair of T-shaped elements502, a fifth pair of T-shaped elements504, and a sixth pair of T-shaped elements506. In an exemplary embodiment, each of first plurality of pair of T-shaped elements may include two respective T-shaped elements. For example, fourth pair of T-shaped elements502may include a seventh T-shaped element522and an eighth T-shaped element524. In an exemplary embodiment, fifth pair of T-shaped elements504may include a ninth T-shaped element542and a tenth T-shaped element544. In an exemplary embodiment, sixth pair of T-shaped elements506may include an eleventh T-shaped element562and a twelfth T-shaped element564. In an exemplary embodiment, T-shaped elements of each of first plurality of pair of T-shaped elements may be attached to the outer surface of first hollow rod142and in front of each other. In an exemplary embodiment, each of first plurality of T-shaped elements may be similar in structure and functionality to first T-shaped element322and a second T-shaped element324. In an exemplary embodiment, a bottom end501of first pipe104may be attached to a top end1228of conical-head pipe102. In an exemplary embodiment, bottom end501of first pipe104may be attached to top end1228of conical-head pipe102by utilizing a pipe coupling103. In an exemplary embodiment, each pipe from the plurality of pipes may be installed onto a previously installed pipe from the plurality of pipes. In an exemplary embodiment, a bottom end of each of the plurality of pipes may be attached to a top end of the previously installed pipe.

FIG. 6Ais a method600for soil reinforcement at a target location, consistent with one or more exemplary embodiments of the present disclosure.FIG. 6Bshows a schematic implementation of method600for soil reinforcement at a target location, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 6A, in an exemplary embodiment, method600may include a step602of generating a cavity at a target location, a step604of filling the cavity with grout, a step606of generating a well at the target location by inserting a barbed micropile into the ground at the target location, a step608of filling a space between the barbed micropile and the well's wall with grout, and a step610of filling an inner chamber of a hollow rod with grout. In an exemplary embodiment, step602ainFIG. 6Bmay correspond to step602of method600inFIG. 6A. In an exemplary embodiment, step604ainFIG. 6Bmay correspond to step604of method600inFIG. 6A. In an exemplary embodiment, step606ainFIG. 6Bmay correspond to step606of method600inFIG. 6A. In an exemplary embodiment, step610ainFIG. 6Bmay correspond to step610of method600inFIG. 6A.

In an exemplary embodiment, in order to implement step602of method600, a cavity620may be generated at the target location. In an exemplary embodiment, cavity620may be created by driving a casing pipe624into a ground630at the target location utilizing a mechanical hammer.FIG. 7Ashows a perspective view of casing pipe624, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 7A, in an exemplary embodiment, a plurality of gripping members such as first gripping member702may be attached around on an outer surface of casing pipe624. In an exemplary embodiment, first gripping member702may include a gripping hole722. In an exemplary embodiment, the plurality of gripping members may be configured to be attached to a mechanical hammer. In an exemplary embodiment, a hook of a mechanical hammer may be engaged with gripping hole722. In an exemplary embodiment, a mechanical hammer may pull out casing pipe624from ground630by pulling up the hook of the mechanical hammer. In an exemplary embodiment, the plurality of gripping members may include more gripping members in addition to first gripping member702which are shown inFIG. 7Abut are not labeled. In an exemplary embodiment, the more gripping members of the plurality of gripping members may be similar in structure and function to first gripping member702. In an exemplary embodiment, casing pipe624may further include a top ring704attached to a top end of casing pipe624and to the plurality of gripping members.FIG. 7Bshows a side view of casing pipe624in a scenario in which casing pipe624is inserted into ground630at the target location, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 7B, a mechanical hammer such as an exemplary mechanical hammer710may be used to insert casing pipe624into ground630and pull out casing pipe624from ground630.

In an exemplary embodiment, in order to implement step604of method600, cavity620may be filled with grout640. In an exemplary embodiment, in order to implement step606of method600, a barbed micropile such as barbed micropile100, as shown inFIG. 1A, may be inserted into the ground at the target location. In an exemplary embodiment, a barbed micropile such as barbed micropile100may be driven into the ground at a bottom622of cavity620by utilizing a mechanical hammer. In an exemplary embodiment, a well660may be generated in the ground by inserting barbed micropile100into the ground.

As shown inFIG. 6B, in an exemplary embodiment, during insertion of barbed micropile100into ground630at bottom622of cavity620, the grout contained in cavity620may flow into a space (not labeled) between barbed micropile100and well's660wall. In an exemplary embodiment, during insertion of barbed micropile100into ground630at bottom622of cavity620, grout may continuously be poured into cavity620to ensure that during insertion of barbed micropile100into ground630at bottom622of cavity620, the space between barbed micropile100and well's660wall is fully filled with grout. In an exemplary embodiment, the space between barbed micropile100and well's660wall being fully filled with grout may refer to a scenario in which grout is poured into the space between barbed micropile100and well's660wall until the grout level reaches bottom622of cavity620. In an exemplary embodiment, it may be understood that during insertion of barbed micropile100into ground630at bottom622of cavity620, grout may flow into the space between barbed micropile100and well's660wall due to the gravity force.

In an exemplary embodiment, in order to implement step610of method600, grout may be injected into barbed micropile100as shown in step610ainFIG. 6B. In an exemplary embodiment, grout may be injected into barbed micropile100by utilizing a tremie pipe612. In an exemplary embodiment, when grout is injected into barbed micropile100, the grout may be discharged from inner chamber1222of hollow rod122into the space between barbed micropile100and well's660wall through thorough injection hole1226. In an exemplary embodiment, cylindrical elastic casing202may prevent grout penetration into inner chamber1222of hollow rod122from the space between barbed micropile100and well's660wall.

In an exemplary embodiment, before complete solidification of the grout inside barbed micropile100, a reinforcement rebar may be inserted into barbed micropile100and then a stiffener mechanism may be attached to a top end of the reinforcement rebar.FIG. 8Ashows barbed micropile100in a scenario in which a reinforcement rebar is inserted into barbed micropile100, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 8A, a reinforcement bar802may be inserted into barbed micropile100.

In an exemplary embodiment, before inserting reinforcement bar802into barbed micropile100, casing pipe624may be pulled out from cavity620by utilizing a mechanical hammer such as mechanical hammer710. Then, in an exemplary embodiment, an armature assembly830may be disposed inside cavity620and then an amount of cement may be poured into cavity620to form a cement block840.

FIG. 8Bshows a perspective view of barbed micropile100in a scenario in which reinforcement rebar802is inserted into barbed micropile100, consistent with one or more exemplary embodiments of the present disclosure. As shown inFIG. 8B, in an exemplary embodiment, a stiffener assembly804may be attached to a top end of reinforcement rebar802and a top end of barbed micropile100. As shown inFIG. 8B, in an exemplary embodiment, stiffener assembly804may include a first horizontal plate842attached to barbed micropile100. In an exemplary embodiment, first horizontal plate842may include a hole at a middle of first horizontal plate842. In an exemplary embodiment, barbed micropile100may be inserted into the hole of first horizontal plate842. In an exemplary embodiment, stiffener assembly804may further include a first vertical plate843, a second vertical plate844, a third vertical plate845, and a fourth vertical plate846. In an exemplary embodiment, first vertical plate843, second vertical plate844, third vertical plate845, and fourth vertical plate846may be attached around on an outer surface of barbed micropile100.

In an exemplary embodiment, stiffener assembly804may further include a second horizontal plate847and a third horizontal plate848. In an exemplary embodiment, second horizontal plate847may be placed onto first vertical plate843, second vertical plate844, third vertical plate845, fourth vertical plate846, and a top end of barbed micropile100. In an exemplary embodiment, third horizontal plate848may be placed onto second horizontal plate847. In an exemplary embodiment, reinforcement bar802may be inserted into a hole of second horizontal plate847and a hole of third horizontal plate848. In an exemplary embodiment reinforcement bar802may include an externally threaded section822on a top end of reinforcement bar802. In an exemplary embodiment, a nut824with an internally threaded section may be screwed onto externally threaded section822to secure horizontal plate847and third horizontal plate848at their place.