EP2064392A1 - Soil guard structure and establishment method - Google Patents

Soil guard structure and establishment method

Info

Publication number
EP2064392A1
EP2064392A1 EP07808322A EP07808322A EP2064392A1 EP 2064392 A1 EP2064392 A1 EP 2064392A1 EP 07808322 A EP07808322 A EP 07808322A EP 07808322 A EP07808322 A EP 07808322A EP 2064392 A1 EP2064392 A1 EP 2064392A1
Authority
EP
European Patent Office
Prior art keywords
rigid metal
metal panel
ground
guard structure
soil guard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07808322A
Other languages
German (de)
French (fr)
Inventor
Seongdeuk Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Young Chang Construction Co Ltd
Original Assignee
Young Chang Construction Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39413640&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2064392(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Young Chang Construction Co Ltd filed Critical Young Chang Construction Co Ltd
Publication of EP2064392A1 publication Critical patent/EP2064392A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/02—Sheet piles or sheet pile bulkheads
    • E02D5/03—Prefabricated parts, e.g. composite sheet piles
    • E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
    • E02D5/06—Fitted piles or other elements specially adapted for closing gaps between two sheet piles or between two walls of sheet piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0026—Metals

Definitions

  • the present invention relates to a soil guard structure and an establishment method thereof, and more particularly, to a soil guard structure and an establishment method thereof in which, in a basement excavation for constructing various buildings, the basement excavation is proceeded after the soil guard is established by vertically mounting H-beams provided with a guide rail in the ground and inserting a rigid metal panel between the H-beams, thereby stabilizing the ground and thus preventing landslide due to instability of the ground and blocking inflow of soil or groundwater into the work space.
  • a basement excavation is performed to a predetermined depth below the ground surface.
  • an establishment of a protective wall for preventing collapse of the soil wall due to the earth pressure and a water stopping operation for blocking inflow of groundwater sprung from the ground into the working area should be performed concurrently.
  • soil guard and water stop there has been mainly- used a construction method in which, as shown in Figs.
  • a soil guard is established by arranging H-beams 110 with uniform spacing and inserting a lagging 130 between the H- beams 110 so as to prevent inflow of the soil due to the earth pressure or inflow of groundwater after performing the basement excavation to a predetermined depth below the ground surface and thereafter the soil is filled in the rear side of the soil guard structure where a space is formed thereby stabilizing the ground.
  • duplicated double wooden laggings were inserted between the H- beams to establish the soil guard structure.
  • the rigidity was reinforced to some extent by inserting the duplicated double laggings, but there have been problems that material cost and workload are increased while the water stopping function is still dropped.
  • concrete laggings made of high rigidity concrete instead of the wooden laggings were used to establish the soil guard structure, but there has been a problem of low efficiency since distances between the H-beams are different from one another and thus the laggings are manufactured individually one by one.
  • An object of the present invention is to provided a soil guard structure and an establishment method thereof in which, in basement excavation for constructing various buildings, the basement excavation is proceeded after the soil guard is established by vertically mounting H-beams provided with a guide rail in the ground and inserting a rigid metal panel between the H-beams, thereby stabilizing the ground and thus preventing landslide due to instability of the ground and blocking inflow of soil or groundwater into the work space.
  • Another object of the present invention is to provide a soil guard structure and an establishment method thereof in which the soil guard structure is established by inserting a unit rigid metal panel between the H-beams vertically mounted in the ground and thus the rigidity is ensured to improve safety and work is simplified to shorten the term of works.
  • Another object of the present invention is to provide a soil guard structure and an establishment method thereof in which the H-beams can be correctly mounted in the ground using a guide angle provided with a guide hole.
  • Yet another object of the present invention is to provide a soil guard structure and an establishment method thereof in which recyclable members are used and thus environment pollution and waste of resources are reduced and construction cost is also saved.
  • the establishment method of a soil guard structure includes a H-beam mounting step for vertically mounting H- beams in the ground through guide holes provided at the ground surface with a predetermined spacing; a rigid metal panel insertion step for inserting the rigid metal panel into the ground in the longitudinal direction of the H-beams between the H-beams vertically mounted in the ground; and a basement excavation step for excavating the basement to a predetermined depth below the ground surface.
  • the guide hole is a quadrangle through hole formed by a plurality of steels so as to allow the H-beam to pass through and at least two thereof are combined in the vertical direction.
  • the formation of the guide hole includes a first step for disposing a pair of first steels so as to be spaced apart from each other by a width of the H-beam and to be in parallel to the ground surface,- a second step for disposing second steels having a predetermined length so as to be affixed to the first steels at an end thereof and to be in a direction opposite to the ground surface,- a third step for disposing third steels so as to be affixed to the other end of the second steels and to correspond to the first steels; and a fourth step for attaching auxiliary steels to the first steels and the third steels so as to form the guide hole.
  • the establishment method of a soil guard structure further includes, before the H-beam mounting step, a guide hole removal step for removing the guide hole.
  • the establishment method of a soil guard structure further includes, before the H-beam mounting step, a guide rail attachment step for attaching a guide rail to a web of the H-beam in a longitudinal direction of the H-beam.
  • the guide rail is L-shaped steel.
  • the guide rail attachment step includes a step of applying water blowing agent into a space part formed by the guide rail and a flange of the H-beam.
  • the establishment method of a soil guard structure further includes, before the rigid metal panel insertion step, a step of forming s at edges of the rigid metal panel.
  • the rigid metal panel insertion step includes a step of injecting water by a pipeline operatively connected to a water jet and provided on a surface or both surfaces of the rigid metal panel in an insertion direction of the rigid metal panel and an injection nozzle provided at a lower end portion of the pipeline.
  • the rigid metal panel insertion step includes a stiffener providing step for providing with a stiffener on a surface or both surfaces of the rigid metal panel in an insertion direction of the rigid metal panel.
  • the soil guard structure in which H-beatns are vertically mounted in the ground and a plurality of panels are inserted between the H-beams to stabilize the ground and prevent inflow of groundwater, wherein the panel is a rigid metal panel and the H-beam is provided with a guide rail in a longitudinal direction thereof so as to allow the insertion of the rigid metal panel.
  • the H-beam and the rigid metal panel are inserted into the ground by an auger crane or a vibro hammer.
  • the H-beam and the rigid metal panel are pressed into the ground by a drawing machine .
  • the drawing machine includes a hydraulic jack which moves up and down for inserting or extracting the H- beam or the rigid metal panel into or from the ground and a moving means which is placed below the hydraulic jack and allows the drawing machine to move.
  • the H-beam, the guide rail and the rigid metal panel are inserted into the ground by an auger crane or a vibro hammer.
  • the H-beam, the guide rail and the rigid metal panel are pressed into the ground by a drawing machine.
  • Fig. 1 is a perspective view illustrating a conventional soil guard structure
  • Fig. 2 is a sectional view illustrating establishment of the conventional soil guard structure
  • Fig. 3 is a perspective view illustrating a soil guard structure in accordance with the present invention.
  • Fig. 4 is a sectional view illustrating establishment of the soil guard structure in accordance with the present invention.
  • Fig. 5 is a perspective view of a H-beam provided with a guide rail
  • Fig. 6 is an exploded perspective view illustrating the H-beam and a rigid metal panel
  • Fig. 7 is a sectional view illustrating the soil guard structure in accordance with the present invention
  • Fig. 8 is a perspective view illustrating establishment of the H-beam
  • Fig. 9 is an exploded perspective view illustrating a guide angle
  • Fig. 10 is a perspective view illustrating establishment of the rigid metal panel
  • Fig. 11 is a sectional view of the H-beam which is water blown treated
  • Fig. 12 (a) is a perspective view illustrating the rigid metal panel provided with a stiffener,-
  • Fig. 12 (b) is a perspective view illustrating the rigid metal panel provided with a pipeline and an injection nozzle
  • Fig 13 is a diagram illustrating the process steps of the present invention.
  • Fig. 3 is a perspective view illustrating a soil guard structure in accordance with the present invention
  • Fig. 4 is a sectional view illustrating establishment of the soil guard structure in accordance with the present invention
  • Fig. 5 is a perspective view of a H-beam provided with a guide rail
  • Fig. 6 is an exploded perspective view illustrating the H-beam and a rigid metal panel
  • Fig. 7 is a sectional view illustrating the soil guard structure in accordance with the present invention
  • Fig. 8 is a perspective view illustrating establishment of the H-beam
  • Fig. 9 is an exploded perspective view illustrating an guide angle
  • Fig. 10 is a perspective view illustrating establishment of the rigid metal panel
  • Fig. 10 is a perspective view illustrating establishment of the rigid metal panel
  • FIG. 11 is a sectional view of the H-beam which is water blown treated;
  • Fig. 12 (a) is a perspective view illustrating the rigid metal panel provided with a stiffener;
  • Fig. 12 (b) is a perspective view illustrating the rigid metal panel provided with a pipeline and an injection nozzle;
  • Fig 13 is a diagram illustrating the process steps of the present invention.
  • a soil guard structure and an establishment method thereof are for preventing collapse of a soil wall due to the earth pressure and blocking inflow of groundwater sprung from the ground into the working area thereby allowing basement excavation to be smoothly proceeded in the basement excavation for building an underground structure such as a basement of a building or the subway.
  • H-beams 10 are vertically mounted in the ground with uniform spacing and rigid metal panels 30 are inserted between the H-beams 10 thereby establishing the soil guard structure.
  • the soil guard structure is firstly established in the ground and thereafter the basement excavation for building an underground structure is proceeded.
  • the establishment method of the soil guard structure includes, as shown in Fig. 13, a H-beam mounting step for vertically mounting H-beams 10 in the ground through guide holes 41 provided at the ground surface; a rigid metal panel insertion step for inserting the rigid metal panel 30 into the ground in the longitudinal direction of the H-beam 10 between the H-beams 10 vertically mounted in the ground; and a basement excavation step for excavating the basement to a predetermined depth below the ground surface.
  • Fig. 5 is a perspective view illustrating the H-beam provided with a guide rail.
  • a guide rail 20 is attached to a web 11 of the H-beam 10 in a longitudinal direction of the H-beam 10. It is preferable that L-shaped steel is used as the guide rail 20. Also, a space part 21 is formed between the H-beam 10 and the guide rail 20 so that the rigid metal panel 30 can be inserted between the H-beams 10.
  • the guide rail 20 is attached to the web 11 of the H-beam 10 generally by a fastener 23 while it may be attached by welding or other attachment methods .
  • Fig. 8 is a perspective view illustrating establishment of the H-beam
  • Fig. 9 is an exploded perspective view illustrating a guide angle.
  • the guide hole 41 in which at least two quadrangle through holes are combined in a direction perpendicular to the ground surface, is formed so that the H-beams 10 are at a predetermined distance from each other and vertically mounted in the ground.
  • the formation of the guide hole 41 includes a first step for disposing a pair of first steels 42 so as to be spaced apart from each other by width of the H-beam 10 and to be in parallel to the ground surface; a second step for disposing second steels 43 having a predetermined length so as to be affixed to the first steels 42 at an end thereof and to be in a direction opposite to the ground surface; a third step for disposing third steels 44 so as to be affixed to the other end of the second steels 42 and to correspond to the first steels 42; and a fourth step for attaching auxiliary steels 45 to the first steels 42 and the third steels 44 so as to form the guide hole 41.
  • the H-beams 10 are inserted into the ground by a vibro hammer 50 or an auger crane (not shown) as shown in Fig. 8 (a) or pressed into the ground by a drawing machine 60 as shown in Fig. 8 (b) through .the guide hole 41 formed in the guide angle 40.
  • the drawing machine 60 includes a hydraulic jack 61 which moves up and down for inserting or extracting the H-beam and a moving means 62 which is placed below the hydraulic jack 61 and allows the drawing machine 60 to move freely, and it moves to the working position through the moving means 62 and then presses the H-beam 10 into the ground using the hydraulic jack 61.
  • the vibro hammer 50 or the auger crane inserts the H-beam 10 into the ground by applying repeated impacts to the H-beam 10, while the drawing machine 60 presses the H-beam 10 into the ground through hydraulic pressure and thus do not generates vibration and noise thereby capable of stabilizing the peripheral structures and the ground and not causing noise pollution.
  • Fig. 6 is an exploded perspective view illustrating the H-beam and a rigid metal panel
  • Fig. 7 is a sectional view illustrating the soil guard structure in accordance with the present invention.
  • the rigid metal panel 30 is inserted in the space part 21 formed in the web 11 of the H-beam 10 attached with the guide rail 20 to form the soil guard structure.
  • such formed soil guard structure serves to support the earth pressure not only to prevent the inflow of the soil into the working area and but also to block the inflow of groundwater thereby allowing smooth proceeding of the basement excavation.
  • Fig. 10 is a perspective view illustrating establishment of the rigid metal panel.
  • the rigid metal panel 30 is established between the H-beams 10 vertically mounted in the ground through the guide angle 40 to form the soil guard structure. At this time, the rigid metal panel 30 is inserted into the ground by the vibro hammer 50 or the auger crane (not shown) as shown in Fig. 10 (a) or pressed into the ground by the drawing machine 60 as shown in Fig. 10 (b) .
  • the drawing machine 60 includes a hydraulic jack 61 which moves up and down for inserting or extracting the H-beam and a moving means 62 which is placed below the hydraulic jack 61 and allows the drawing machine 60 to move freely, and it moves to the working position through the moving means 62 and then presses the H-beam 10 into the ground using the hydraulic jack 61.
  • the vibro hammer 50 or the auger crane inserts the H-beam 10 into the ground by applying repeated impacts to the H-beam 10, while the drawing machine 60 presses the H-beam 10 into the ground through hydraulic pressure and thus do not generates vibration and noise thereby capable of stabilizing the peripheral structures and the ground and not causing noise pollution.
  • the guide hole 41 or the guide angle 40 used to insert the H-beam 10 should be removed before insertion of the rigid metal panel 30.
  • Fig. 11 is a sectional view of the H-beam which is water blown treated and water blowing agent 22 is applied into the space part 21 of the H-beam 10 in which both ends of the rigid metal panel 30 are inserted.
  • This water blowing agent 22 applied into the space part 21 is reacted with moisture such as groundwater in the ground to fill the gap of the space part 21 thereby blocking inflow of the groundwater into the working area.
  • Fig. 12 is a perspective view illustrating the rigid metal panel provided with a stiffener, or a pipeline operatively connected to a water jet (not shown) and an injection nozzle.
  • the rigid metal panel 30 is provided with a plurality of stiffeners 31 in an insertion direction, i.e. a direction in which the pressure is formed.
  • the stiffeners 31 are formed on a surface or both surface of the rigid metal panel 30 to reinforce a rigidity of the rigid metal panel 30.
  • pipelines 32 operatively connected to a water jet are provided on a surface or both surface of the rigid metal panel 30 and injection nozzles 33 are provided at lower ends of the pipelines 32.
  • the injection nozzle 33 is provided at the rigid metal panel 30 and injects high pressure water when insertion of the rigid metal panel 30 to facilitate the insertion.
  • either of the stiffener 31 and the pipeline operatively connected to a water jet (not shown) and the injection nozzle may be formed or both of them may be formed together.
  • chamfers 34 are formed at both edges of the rigid metal panel 30 in a direction of insertion of the rigid metal panel so that the rigid metal panel 30 can be easily inserted when the rigid metal panel 30 is inserted in the space part 21 of the H-beam 10. Since the soil guard structure including the H-beam 10 and the rigid metal panel 30 is established in the ground before the basement excavation for building underground structure, the ground is stabilized when the basement excavation which is performed thereafter and the term of works is shortened.
  • the soil guard structure and the establishment method thereof in accordance with the present invention since the soil guard structure is established by inserting a unit rigid metal panel between the H-beams vertically mounted in the ground, the rigidity is ensured to improve safety and work is simplified to shorten the term of works .
  • the members constructing the soil guard structure can be recycled, there are effects of reducing environment pollution and waste of resources as well as saving construction cost.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The present invention relates to a soil guard structure and an establishment method thereof. The soil guard structure in which H-beams are vertically mounted in the ground and a plurality of panels are inserted between the H-beams to stabilize the ground and prevent inflow of groundwater, wherein the panel is a rigid metal panel and the H-beam is provided with a guide rail in a longitudinal direction so as to allow the insertion of the rigid metal panel.

Description

SOIL GUARD STRUCTURE AND ESTABLISHMENT METHOD
[Technical Field] The present invention relates to a soil guard structure and an establishment method thereof, and more particularly, to a soil guard structure and an establishment method thereof in which, in a basement excavation for constructing various buildings, the basement excavation is proceeded after the soil guard is established by vertically mounting H-beams provided with a guide rail in the ground and inserting a rigid metal panel between the H-beams, thereby stabilizing the ground and thus preventing landslide due to instability of the ground and blocking inflow of soil or groundwater into the work space.
[Background Art]
Generally, in order to build an underground structure such as a basement of a building or the subway, a basement excavation is performed to a predetermined depth below the ground surface. When performing the basement excavation, an establishment of a protective wall for preventing collapse of the soil wall due to the earth pressure and a water stopping operation for blocking inflow of groundwater sprung from the ground into the working area should be performed concurrently. For such soil guard and water stop, there has been mainly- used a construction method in which, as shown in Figs. 1 and 2, a soil guard is established by arranging H-beams 110 with uniform spacing and inserting a lagging 130 between the H- beams 110 so as to prevent inflow of the soil due to the earth pressure or inflow of groundwater after performing the basement excavation to a predetermined depth below the ground surface and thereafter the soil is filled in the rear side of the soil guard structure where a space is formed thereby stabilizing the ground.
However, in this construction method, since the soil guard structure including the H-beams and the wooden lagging is established and the soil is filled in the rear side of the soil guard structure formed with the vacant space after the basement excavation has been proceeded to some extent, there have been problems that the ground at the rear side of the soil guard structure is not stabilized and thus apt to cause occurrence of ground subsidence and ground landslide, and the protective wall is formed using a plurality of wooden laggings and thus water stopping function for blocking inflow of the groundwater is dropped and rigidity is weak. Also, there has been another problem of occurrence of environment pollution as the laggings 130 made of wood are hard to be recycled after the construction has been finished and thus are left in the ground.
Therefore, in order to overcome aforementioned problems, duplicated double wooden laggings were inserted between the H- beams to establish the soil guard structure. The rigidity was reinforced to some extent by inserting the duplicated double laggings, but there have been problems that material cost and workload are increased while the water stopping function is still dropped. Alternatively, concrete laggings made of high rigidity concrete instead of the wooden laggings were used to establish the soil guard structure, but there has been a problem of low efficiency since distances between the H-beams are different from one another and thus the laggings are manufactured individually one by one.
In addition, since the establishment of the soil guard structure and ground stabilizing operation at the rear side of the soil guard structure are performed simultaneously during the basement excavation, there have been problems that workability is lowered and the term of works is lengthened and thus construction cost is increased.
[Disclosure] [Technical Problem]
An object of the present invention is to provided a soil guard structure and an establishment method thereof in which, in basement excavation for constructing various buildings, the basement excavation is proceeded after the soil guard is established by vertically mounting H-beams provided with a guide rail in the ground and inserting a rigid metal panel between the H-beams, thereby stabilizing the ground and thus preventing landslide due to instability of the ground and blocking inflow of soil or groundwater into the work space.
Another object of the present invention is to provide a soil guard structure and an establishment method thereof in which the soil guard structure is established by inserting a unit rigid metal panel between the H-beams vertically mounted in the ground and thus the rigidity is ensured to improve safety and work is simplified to shorten the term of works.
Further another object of the present invention is to provide a soil guard structure and an establishment method thereof in which the H-beams can be correctly mounted in the ground using a guide angle provided with a guide hole.
Yet another object of the present invention is to provide a soil guard structure and an establishment method thereof in which recyclable members are used and thus environment pollution and waste of resources are reduced and construction cost is also saved.
[Technical Solution] The establishment method of a soil guard structure includes a H-beam mounting step for vertically mounting H- beams in the ground through guide holes provided at the ground surface with a predetermined spacing; a rigid metal panel insertion step for inserting the rigid metal panel into the ground in the longitudinal direction of the H-beams between the H-beams vertically mounted in the ground; and a basement excavation step for excavating the basement to a predetermined depth below the ground surface. Further, the guide hole is a quadrangle through hole formed by a plurality of steels so as to allow the H-beam to pass through and at least two thereof are combined in the vertical direction.
Herein, the formation of the guide hole includes a first step for disposing a pair of first steels so as to be spaced apart from each other by a width of the H-beam and to be in parallel to the ground surface,- a second step for disposing second steels having a predetermined length so as to be affixed to the first steels at an end thereof and to be in a direction opposite to the ground surface,- a third step for disposing third steels so as to be affixed to the other end of the second steels and to correspond to the first steels; and a fourth step for attaching auxiliary steels to the first steels and the third steels so as to form the guide hole. Also, the establishment method of a soil guard structure further includes, before the H-beam mounting step, a guide hole removal step for removing the guide hole.
Further, the establishment method of a soil guard structure further includes, before the H-beam mounting step, a guide rail attachment step for attaching a guide rail to a web of the H-beam in a longitudinal direction of the H-beam. At this time, the guide rail is L-shaped steel. The guide rail attachment step includes a step of applying water blowing agent into a space part formed by the guide rail and a flange of the H-beam.
Further, the establishment method of a soil guard structure further includes, before the rigid metal panel insertion step, a step of forming s at edges of the rigid metal panel.
Further, the rigid metal panel insertion step includes a step of injecting water by a pipeline operatively connected to a water jet and provided on a surface or both surfaces of the rigid metal panel in an insertion direction of the rigid metal panel and an injection nozzle provided at a lower end portion of the pipeline.
Also, the rigid metal panel insertion step includes a stiffener providing step for providing with a stiffener on a surface or both surfaces of the rigid metal panel in an insertion direction of the rigid metal panel.
The soil guard structure in which H-beatns are vertically mounted in the ground and a plurality of panels are inserted between the H-beams to stabilize the ground and prevent inflow of groundwater, wherein the panel is a rigid metal panel and the H-beam is provided with a guide rail in a longitudinal direction thereof so as to allow the insertion of the rigid metal panel.
Also, the H-beam and the rigid metal panel are inserted into the ground by an auger crane or a vibro hammer.
Further, the H-beam and the rigid metal panel are pressed into the ground by a drawing machine .
Herein, the drawing machine includes a hydraulic jack which moves up and down for inserting or extracting the H- beam or the rigid metal panel into or from the ground and a moving means which is placed below the hydraulic jack and allows the drawing machine to move.
Further, the H-beam, the guide rail and the rigid metal panel are inserted into the ground by an auger crane or a vibro hammer.
Further, the H-beam, the guide rail and the rigid metal panel are pressed into the ground by a drawing machine.
[Description of Drawings] The above and other objects, features and advantages of the present invention will become apparent from the following description of preferred embodiments given in conjunction with the accompanying drawings, in which: Fig. 1 is a perspective view illustrating a conventional soil guard structure;
Fig. 2 is a sectional view illustrating establishment of the conventional soil guard structure;
Fig. 3 is a perspective view illustrating a soil guard structure in accordance with the present invention;
Fig. 4 is a sectional view illustrating establishment of the soil guard structure in accordance with the present invention;
Fig. 5 is a perspective view of a H-beam provided with a guide rail;
Fig. 6 is an exploded perspective view illustrating the H-beam and a rigid metal panel;
Fig. 7 is a sectional view illustrating the soil guard structure in accordance with the present invention; Fig. 8 is a perspective view illustrating establishment of the H-beam;
Fig. 9 is an exploded perspective view illustrating a guide angle;
Fig. 10 is a perspective view illustrating establishment of the rigid metal panel;
Fig. 11 is a sectional view of the H-beam which is water blown treated;
Fig. 12 (a) is a perspective view illustrating the rigid metal panel provided with a stiffener,-
Fig. 12 (b) is a perspective view illustrating the rigid metal panel provided with a pipeline and an injection nozzle; and
Fig 13 is a diagram illustrating the process steps of the present invention.
[Best Mode]
Hereinafter, the embodiments of the present invention will be described in detail with reference to accompanying drawings .
Fig. 3 is a perspective view illustrating a soil guard structure in accordance with the present invention; Fig. 4 is a sectional view illustrating establishment of the soil guard structure in accordance with the present invention; Fig. 5 is a perspective view of a H-beam provided with a guide rail; Fig. 6 is an exploded perspective view illustrating the H-beam and a rigid metal panel; Fig. 7 is a sectional view illustrating the soil guard structure in accordance with the present invention; Fig. 8 is a perspective view illustrating establishment of the H-beam; Fig. 9 is an exploded perspective view illustrating an guide angle; Fig. 10 is a perspective view illustrating establishment of the rigid metal panel; Fig. 11 is a sectional view of the H-beam which is water blown treated; Fig. 12 (a) is a perspective view illustrating the rigid metal panel provided with a stiffener; Fig. 12 (b) is a perspective view illustrating the rigid metal panel provided with a pipeline and an injection nozzle; and Fig 13 is a diagram illustrating the process steps of the present invention.
A soil guard structure and an establishment method thereof are for preventing collapse of a soil wall due to the earth pressure and blocking inflow of groundwater sprung from the ground into the working area thereby allowing basement excavation to be smoothly proceeded in the basement excavation for building an underground structure such as a basement of a building or the subway. As shown in Figs. 3 and 4, H-beams 10 are vertically mounted in the ground with uniform spacing and rigid metal panels 30 are inserted between the H-beams 10 thereby establishing the soil guard structure. As such, the soil guard structure is firstly established in the ground and thereafter the basement excavation for building an underground structure is proceeded.
The establishment method of the soil guard structure includes, as shown in Fig. 13, a H-beam mounting step for vertically mounting H-beams 10 in the ground through guide holes 41 provided at the ground surface; a rigid metal panel insertion step for inserting the rigid metal panel 30 into the ground in the longitudinal direction of the H-beam 10 between the H-beams 10 vertically mounted in the ground; and a basement excavation step for excavating the basement to a predetermined depth below the ground surface.
Fig. 5 is a perspective view illustrating the H-beam provided with a guide rail. As shown in the drawing, a guide rail 20 is attached to a web 11 of the H-beam 10 in a longitudinal direction of the H-beam 10. It is preferable that L-shaped steel is used as the guide rail 20. Also, a space part 21 is formed between the H-beam 10 and the guide rail 20 so that the rigid metal panel 30 can be inserted between the H-beams 10.
The guide rail 20 is attached to the web 11 of the H-beam 10 generally by a fastener 23 while it may be attached by welding or other attachment methods . Fig. 8 is a perspective view illustrating establishment of the H-beam and Fig. 9 is an exploded perspective view illustrating a guide angle. As shown, the guide hole 41, in which at least two quadrangle through holes are combined in a direction perpendicular to the ground surface, is formed so that the H-beams 10 are at a predetermined distance from each other and vertically mounted in the ground. The formation of the guide hole 41 includes a first step for disposing a pair of first steels 42 so as to be spaced apart from each other by width of the H-beam 10 and to be in parallel to the ground surface; a second step for disposing second steels 43 having a predetermined length so as to be affixed to the first steels 42 at an end thereof and to be in a direction opposite to the ground surface; a third step for disposing third steels 44 so as to be affixed to the other end of the second steels 42 and to correspond to the first steels 42; and a fourth step for attaching auxiliary steels 45 to the first steels 42 and the third steels 44 so as to form the guide hole 41.
The H-beams 10 are inserted into the ground by a vibro hammer 50 or an auger crane (not shown) as shown in Fig. 8 (a) or pressed into the ground by a drawing machine 60 as shown in Fig. 8 (b) through .the guide hole 41 formed in the guide angle 40.
At this time, the drawing machine 60 includes a hydraulic jack 61 which moves up and down for inserting or extracting the H-beam and a moving means 62 which is placed below the hydraulic jack 61 and allows the drawing machine 60 to move freely, and it moves to the working position through the moving means 62 and then presses the H-beam 10 into the ground using the hydraulic jack 61.
Herein, the vibro hammer 50 or the auger crane (not shown) inserts the H-beam 10 into the ground by applying repeated impacts to the H-beam 10, while the drawing machine 60 presses the H-beam 10 into the ground through hydraulic pressure and thus do not generates vibration and noise thereby capable of stabilizing the peripheral structures and the ground and not causing noise pollution.
Fig. 6 is an exploded perspective view illustrating the H-beam and a rigid metal panel and Fig. 7 is a sectional view illustrating the soil guard structure in accordance with the present invention. The rigid metal panel 30 is inserted in the space part 21 formed in the web 11 of the H-beam 10 attached with the guide rail 20 to form the soil guard structure. In the basement excavation for building underground structure, such formed soil guard structure serves to support the earth pressure not only to prevent the inflow of the soil into the working area and but also to block the inflow of groundwater thereby allowing smooth proceeding of the basement excavation. Fig. 10 is a perspective view illustrating establishment of the rigid metal panel. As shown, the rigid metal panel 30 is established between the H-beams 10 vertically mounted in the ground through the guide angle 40 to form the soil guard structure. At this time, the rigid metal panel 30 is inserted into the ground by the vibro hammer 50 or the auger crane (not shown) as shown in Fig. 10 (a) or pressed into the ground by the drawing machine 60 as shown in Fig. 10 (b) .
At this time, the drawing machine 60 includes a hydraulic jack 61 which moves up and down for inserting or extracting the H-beam and a moving means 62 which is placed below the hydraulic jack 61 and allows the drawing machine 60 to move freely, and it moves to the working position through the moving means 62 and then presses the H-beam 10 into the ground using the hydraulic jack 61.
Herein, the vibro hammer 50 or the auger crane (not shown) inserts the H-beam 10 into the ground by applying repeated impacts to the H-beam 10, while the drawing machine 60 presses the H-beam 10 into the ground through hydraulic pressure and thus do not generates vibration and noise thereby capable of stabilizing the peripheral structures and the ground and not causing noise pollution.
The guide hole 41 or the guide angle 40 used to insert the H-beam 10 should be removed before insertion of the rigid metal panel 30.
Fig. 11 is a sectional view of the H-beam which is water blown treated and water blowing agent 22 is applied into the space part 21 of the H-beam 10 in which both ends of the rigid metal panel 30 are inserted. This water blowing agent 22 applied into the space part 21 is reacted with moisture such as groundwater in the ground to fill the gap of the space part 21 thereby blocking inflow of the groundwater into the working area. Fig. 12 is a perspective view illustrating the rigid metal panel provided with a stiffener, or a pipeline operatively connected to a water jet (not shown) and an injection nozzle. As shown, the rigid metal panel 30 is provided with a plurality of stiffeners 31 in an insertion direction, i.e. a direction in which the pressure is formed. At this time, the stiffeners 31 are formed on a surface or both surface of the rigid metal panel 30 to reinforce a rigidity of the rigid metal panel 30. Also, pipelines 32 operatively connected to a water jet (not shown) are provided on a surface or both surface of the rigid metal panel 30 and injection nozzles 33 are provided at lower ends of the pipelines 32. The injection nozzle 33 is provided at the rigid metal panel 30 and injects high pressure water when insertion of the rigid metal panel 30 to facilitate the insertion. According to working environment, either of the stiffener 31 and the pipeline operatively connected to a water jet (not shown) and the injection nozzle may be formed or both of them may be formed together.
Also, chamfers 34 are formed at both edges of the rigid metal panel 30 in a direction of insertion of the rigid metal panel so that the rigid metal panel 30 can be easily inserted when the rigid metal panel 30 is inserted in the space part 21 of the H-beam 10. Since the soil guard structure including the H-beam 10 and the rigid metal panel 30 is established in the ground before the basement excavation for building underground structure, the ground is stabilized when the basement excavation which is performed thereafter and the term of works is shortened.
Those skilled in the art will appreciate that the conceptions and specific embodiments disclosed in the foregoing description may be readily utilized as a basis for modifying or designing other embodiments for carrying out the same purposes of the present invention. Those skilled in the art will also appreciate that such equivalent embodiments do not depart from the spirit and scope of the invention as set forth in the appended claims.
[industrial Applicability]
As described above, according to the soil guard structure and the establishment method thereof in accordance with the present invention, since basement excavation is performed after the soil guard structure is established in the ground using the H-beam and the rigid metal panel, there is a unique effect of preventing ground subsidence due to poor filling in the rear side of the soil guard structure.
Also, according to the soil guard structure and the establishment method thereof in accordance with the present invention, since the soil guard structure is established by inserting a unit rigid metal panel between the H-beams vertically mounted in the ground, the rigidity is ensured to improve safety and work is simplified to shorten the term of works .
Further, according to the soil guard structure and the establishment method thereof in accordance with the present invention, since the H-beam and the rigid metal panel are pressed into the ground using a drawing machine, there are effects of preventing collapse of the peripheral structures and the ground due to the vibration and not causing pollution due to the noise .
Further, according to the soil guard structure and the establishment method thereof in accordance with the present invention, since the members constructing the soil guard structure can be recycled, there are effects of reducing environment pollution and waste of resources as well as saving construction cost.

Claims

[CLAIMS] [Claim 1]
An establishment method of a soil guard structure, comprising: a H-beam mounting step for vertically mounting H-beams in the ground through guide holes provided at the ground surface with a predetermined spacing; a rigid metal panel insertion step for inserting the rigid metal panel into the ground in the longitudinal direction of the H-beam between the H-beams vertically mounted in the ground; and a basement excavation step for excavating the basement to a predetermined depth below the ground surface.
[Claim 2] The establishment method of a soil guard structure as set forth in claim 1, wherein the guide hole is a quadrangle through hole formed by a plurality of steels so as to allow the H-beam to pass through and at least two thereof are combined in the vertical direction.
[Claim 3]
The establishment method of a soil guard structure as set forth in claim 2, wherein the formation of the guide hole includes : a first step for disposing a pair of first steels so as to be spaced apart from each other by a width of the H-beam and to be in parallel to the ground surface; a second step for disposing second steels having a predetermined length so as to be affixed to the first steels at an end thereof and to be in a direction opposite to the ground surface; a third step for disposing third steels so as to be affixed to the other end of the second steels and to correspond to the first steels; and a fourth step for attaching auxiliary steels to the first steels and the third steels so as to form the guide hole.
[Claim 4]
The establishment method of a soil guard structure as set forth in claim 1, further comprising, before the rigid metal panel insertion step, a guide hole removal step for removing the guide hole .
[Claim 5]
The establishment method of a soil guard structure as set forth in claim 1, further comprising, before the H-beam mounting step, a guide rail attachment step for attaching a guide rail to a web of the H-beam in a longitudinal direction of the H-beam.
[Claim 6]
The establishment method of a soil guard structure as set forth in claim 5, wherein the guide rail is L-shaped steel.
[Claim 7]
The establishment method of a soil guard structure as set forth in claim 5, wherein the guide rail attachment step includes a step of applying water blowing agent into a space part formed by the guide rail and a flange of the H-beam.
[Claim 8]
The establishment method of a soil guard structure as set forth in claim 1, further comprising, before the rigid metal panel insertion step, a step of forming chamfers at edges of the rigid metal panel .
[Claim 9]
The establishment method of a soil guard structure as set forth in claim 1, wherein the rigid metal panel insertion step includes a step of injecting water by a pipeline operatively connected to a water jet and provided on a surface or both surfaces of the rigid metal panel in an insertion direction of the rigid metal panel and an injection nozzle provided at a lower end portion of the pipeline.
[Claim 10]
The establishment method of a soil guard structure as set forth in claim 1, wherein the rigid metal panel insertion step includes a stiffener providing step for providing with a stiffener on a surface or both surfaces of the rigid metal panel in an insertion direction of the rigid metal panel.
[Claim 11]
A soil guard structure in which H-beams are vertically mounted in the ground and a plurality of panels are inserted between the H-beams to stabilize the ground and prevent inflow of groundwater, wherein the panel is a rigid metal panel and the H-beams is provided with a guide rail in a longitudinal direction thereof so as to allow the insertion of the rigid metal panel.
[Claim 12]
The establishment method of a soil guard structure as set forth in claim 1, wherein the H-beam and the rigid metal panel are inserted into the ground by an auger crane or a vibro hammer .
[Claim 13]
The establishment method of a soil guard structure as set forth in claim 1, wherein the H-beam and the rigid metal panel are pressed into the ground by a drawing machine.
[Claim 14] The establishment method of a soil guard structure as set forth in claim 13, wherein the drawing machine includes a hydraulic jack which moves up and down for inserting or extracting the H-beam or the rigid metal panel into or from the ground and a moving means which is placed below the hydraulic jack and allows the drawing machine to move.
[Claim 15]
The establishment method of a soil guard structure as set forth in claim 5, wherein the H-beam, the guide rail and the rigid metal panel are inserted into the ground by an auger crane or a vibro hammer.
[Claim 16]
The establishment method of a soil guard structure as set forth in claim 11, wherein the H-beam, the guide rail and the rigid metal panel are pressed into the ground by a drawing machine .
EP07808322A 2006-09-19 2007-09-19 Soil guard structure and establishment method Withdrawn EP2064392A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR20060090611 2006-09-19
KR1020070019240A KR100846229B1 (en) 2006-09-19 2007-02-26 Establishment Method of Soil Guard Structure
PCT/KR2007/004532 WO2008035911A1 (en) 2006-09-19 2007-09-19 Soil guard structure and establishment method

Publications (1)

Publication Number Publication Date
EP2064392A1 true EP2064392A1 (en) 2009-06-03

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Application Number Title Priority Date Filing Date
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EP (1) EP2064392A1 (en)
KR (3) KR100846229B1 (en)
CN (1) CN101535572A (en)
WO (1) WO2008035911A1 (en)

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KR20080026013A (en) 2008-03-24
KR20080026014A (en) 2008-03-24

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