• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for subsequent soil consolidation in congested structures to support the structures against the ground. In order to keep away horizontal transverse forces from the bridge structure, according to the invention it is provided that in addition to the existing walls a heavyweight wall is created which can intercept the horizontal forces, the method comprising the steps of: pressing several pipes (2) into the soil behind the structures , Arrangement of the tubes (2) in at least two rows (5), wherein the tubes (2) of a row are arranged approximately parallel to the building and have the least possible distance from each other, arrangement of the tubes (2) in at least one second row (5) with an offset of approximately 50% to the adjacent row, pressing the soil inside the tubes (2) with a cement.
    公开号:CH713699A2
    申请号:CH00405/18
    申请日:2018-03-27
    公开日:2018-10-15
    发明作者:Weber Joachim
    申请人:Weber Joachim；
    IPC主号:
    专利说明:

    Description: The invention relates to a method for subsequent ground stabilization in overloaded structures in order to support the structures against the ground.
    A large number of bridges in Germany were built in the 1970s to bridge rivers and bodies of water. In addition, there are many bridges that have been built with large spans over carriageway or railway lines. The static requirements in the 1970s were generally complied with, but these no longer correspond to the current standards, especially not the Euro 2 standard, so that when the bridge structures are renovated, static checks usually also take place and appropriate measures must be taken to stabilize the bridge structures. This affects several hundred bridges in NRW alone, the construction of which is not possible due to time and cost reasons to meet today's requirements. Rather, there is a need to carry out renovation measures on the bridge structures and to increase the static loads accordingly. Work on the existing bridges should, if possible, not or only partially lead to the closure in order to maintain the flowing traffic.
    The present invention is therefore based on the object to demonstrate a novel method with which the static requirements of existing structures, in particular of angular support walls in bridge structures can be increased.
    [0004] According to the invention, a new method for subsequent soil stabilization is shown for the solution, which comprises the following individual steps:
    - pressing several pipes (2) into the soil behind the structures,
    Arrangement of the tubes (2) in at least two rows (5), the tubes (2) of one row being arranged approximately parallel to the structure and being as close as possible to one another,
    - arrangement of the tubes (2) in at least one second row (5) with an offset of approximately 50% to the adjacent row,
    - Pressing the soil inside the pipes (2) with a cement.
    Further advantageous embodiments of the invention emerge from the subclaims.
    The inventive method is provided for subsequent soil consolidation in overloaded buildings. This can be bridge structures, a listed wall or a water structure. In particular, the walls of historical buildings that need support are suitable as walls. For subsequent soil stabilization, several pipes are pressed into the soil behind the buildings, the pipes being arranged in at least two rows and the pipes of one row being arranged approximately parallel to the building and being as far apart as possible. The pipes are arranged in at least one second row with an offset of approximately 50% to the adjacent row. The soil is then pressed inside the pipes using a flowable cement. The cement or cement mixture bonds with the existing soil as far as possible, namely with an existing sand or gravel soil.
    The inventive method is particularly suitable for subsequent soil consolidation in overloaded bridge structures with angle support walls. The existing bridge structures with angled retaining walls are essentially overloaded due to horizontal forces that arise due to earth pressure and vehicle traffic. Due to the increasing traffic on the roads by trucks with a high transport weight, when driving on the bridge structures, the existing driveways put considerable pressure on the soil traveled and thus on the angular support walls, which can lead to horizontal overloading of the bridge structures. There is therefore the need to take the horizontal pressure at least partially from the bridge structure or the angled retaining walls by means of appropriate security measures. For this reason, it is provided that a heavyweight wall is built behind the angle support walls, which protects the angle support walls and thus the entire bridge structure from the horizontal forces. The horizontal forces are almost completely absorbed by the heavyweight wall and discharged into the ground. For this purpose, several pipes are pressed into the soil behind the angle support walls, the pipes being arranged in at least two rows and running in one row approximately parallel to the angle support wall. In this case, the individual tubes should have the smallest possible distance from one another. A second row of tubes provides an offset of approximately 50% of the tube diameter, so that a stable heavy weight wall can be created due to the achievable higher packing density of the individual tubes. The pressed pipes are pressed with a cement, so that the materials present in the ground, for example a gravel or sand filling, enter into an extremely stable connection within the ground with the cement. It is also possible to press the cement into the ground below the pipes.
    Depending on the size of the bridge structure, several rows of pipes can be arranged side by side, for example 2 to 6 rows, which are each offset from one another in order to absorb the horizontal forces. The heavyweight wall ensures that the horizontal forces do not press against the angled retaining walls, walls or hydraulic structures, but are absorbed by the heavyweight wall and discharged into the ground
    CH 713 699 A2. By staggering the rows to each other, a continuous heavyweight wall can be created, the narrow grid of the pipes after filling with cement acting like concrete reinforcement and safely absorbing the horizontal forces. After the completion of such heavy weight walls, it was determined by analysis that the compressive strength is up to 25.6 N / mm 2 and the horizontal forces that occur can thus be adequately absorbed.
    In this method, there is a significant advantage in bridge structures that the bridge access only has to be blocked on one side in the area of the construction site because only one half of the street is required to carry out the work. The traffic can thus be conducted over the other area of the road, and after the one-sided heavyweight wall has been completed, the further section of the roadway width can be consolidated in a similar manner by changing the traffic routing. Extensive earthworks are not necessary because the necessary pipes are pressed directly into the soil behind the corner support walls.
    Depending on the size of the building, it is provided that the tubes are arranged in 2 to 6 rows, preferably in 3 to 4 rows next to each other, each row being offset by approximately 50% to the adjacent row. In a further embodiment of the invention it is provided that the tubes are pressed in at least up to the base point of a bridge structure, a listed wall or hydraulic structures. In individual cases, however, the pipes can be pressed in much deeper than up to the base point, with the upper edge of the pipes reaching to the crown of the angular support wall or just below it in a further embodiment of bridge structures. Correspondingly to the earth level or just below it with a listed wall or a water structure. In the case of a bridge structure, the rows formed from the tubes extend over the entire width of the angular support wall and are preferably produced in two work steps which, depending on the width of the roadway, lead to a diversion of traffic, but do not entail any further impairments. In particular, no elaborate work is required, since the existing soil is sufficient for pressing in the pipes and for pressing. In the case of a listed wall or a water structure, the pipes can be used in an endangered section.
    Per square meter 4 to 5 tubes with a required diameter of about 20 to 250 mm in diameter are used in one meter due to the adjacent tubes and the planned packing density. The rows in which the pipes are arranged usually start just behind the angled retaining wall, a wall or a water structure and are arranged in the direction of the soil behind the angled retaining wall or wall.
    The angular support wall of a bridge structure here has a foot element which is T-shaped, the T-shaped end being let into the ground and only the perpendicularly rising angular support wall protruding upwards. Insofar as the tubes are pressed in directly next to the angled support wall, the individual tubes sit directly on the foot element of the angled support wall, whereas, in contrast, the removed rows can be pressed in deeper next to the foot element.
    In order to obtain a higher stability of the pipes is provided in special cases, especially when supporting hydraulic structures or historical walls, that the soil is removed from the pipes and the pipes are filled with a cement or cement mixture.
    A micro-cement with a fineness of 3500-20,000 Blaine (cm 2 per gram) is preferably used to compress the soil within the pipes. The fineness of the cement or cement mixture ensures that the cement substances or the filling material pressed in by the injection plants can penetrate deep into the ground below the pipes and thus form a firm connection.
    In a further embodiment of the method it is provided that the injected substance moisture is supplied in a sufficient amount, or that the substance is enriched with a sufficient amount of moisture, or that the injected substance with the moisture of the filler material from the fill behind the angular support wall at least partially reacts and hardens.
    [0017] The cement substance can in this case be pressed in a plurality of work steps carried out in succession, it being possible to wait for at least partial curing between the work processes. This makes it possible to carry out a tight compression up to the upper edge of the pipes, starting from the lower pipe ends.
    For a further preferred embodiment of the method it is provided that the substance is supplied to the soil or filler material by an injection lance, the depth of which can be adjusted.
    In a further special embodiment of the invention, it is provided that quality assurance measures are used to carry out a continuous or subsequent check of the substance injection that has taken place. For this purpose, for example, a georadar can be used, which is used for an analysis of the soil area during or after the completion of the injection process and thus enables control over the existing penetration depth and spread of the substance in the soil or filler material. Alternatively, for quality assurance there is the option of using a seismic method, which also enables the compression to be checked.
    CH 713 699 A2 Overall, the present method has the advantages that a subsequent retaining wall can be created without large earthworks, which can absorb the horizontal forces. In this way, the pressure can be taken from the bridge structure, in particular the angular support walls, based on the soil and the loads caused by traffic. As a result, the Eurocode 2 standard is met and the bridge structures do not have to be completely rebuilt. By arranging several tubes next to each other in a row and several rows arranged next to each other, there is the possibility of building a sufficient heavy-weight wall which, due to an offset of the individual tubes to the adjacent rows, has sufficient stability and can absorb the transverse forces that occur.
    [0021] The invention is explained in more detail below with reference to the figures.
    It shows
    Fig. 1 in a sectional side view of an angle support wall with pressed-in steel tubes in several rows and
    Fig. 2 in a sectional plan view of the angle support wall with the arrangement of the pressed tubes.
    Fig. 1 shows a sectional side view, for example, an angle support wall 1 and pressed tubes 2 in several rows 5. The angle support wall 1 belongs to a bridge structure and is located at the end of the bridge structure in front of the ground of the bank area. The angled support wall 1 consists of a foot element 3 and a vertical support element 4, which are poured from concrete at the time of the bridge construction in order to subsequently fill up soil, the soil being on the side facing away from the bridge construction. Pipes 2 are pressed into the ground behind the angled support wall 1 in accordance with the present method for subsequent ground fastening in the case of overloaded bridge structures with angled support walls 1. A plurality of rows 5 of tubes 2 lying next to one another are preferably used here, which, as can be seen in particular from FIG. 2, are also arranged offset to one another. After being pressed in, the pipes 2 are pressed with cement, the filling that is present usually being pressed behind the angular support wall 1 with the cement or the cement mixture. The tubes 2 or row 5 of the first tubes 2 arranged directly behind the angled support wall 1 are seated on the foot element 3, while further adjacent rows 5 can be pressed deeper into the ground, preferably up to below the sole of the foot element and possibly also beyond ,
    Fig. 2 shows a sectional plan view along the section line A-A on the angle support wall 1 with foot element 3 and the tubes 2, which are arranged in four adjacent rows 5. The individual tubes 2 of a row 5 are closely adjacent and already form an almost closed wall, the tubes 2 of two further adjacent rows 5 being arranged offset to one another. This means that the pipes are offset by approximately 50% from the adjacent row. Depending on the size of the bridge structure, the diameter of the pipes 2 and the number of rows 5 can be determined, the main factor here being which horizontal forces can arise, for example due to vehicle traffic or due to the geographic conditions and arrangement of the bridge structure.
    With the help of the tubes 2, which are arranged in several rows 5 next to each other, a heavy weight wall is built which achieves that lateral forces that press against the angular support walls 1 from the direction of the earth are largely absorbed and directed into the ground, whereby the angular support wall 1 has to absorb significantly less lateral forces.
    Reference symbol list [0026]
    Angular retaining wall
    Tube
    foot element
    support element
    string
    权利要求:
    Claims (17)
    [1]
    claims
    1. Method for subsequent soil consolidation in the case of overloaded structures in order to support the structures against the ground, characterized by
    - pressing several pipes (2) into the soil behind the structures,
    CH 713 699 A2
    Arrangement of the tubes (2) in at least two rows (5), the tubes (2) of one row being arranged approximately parallel to the structure and being as close as possible to one another,
    - arrangement of the tubes (2) in at least one second row (5) with an offset of approximately 50% to the adjacent row,
    -Pressing the soil inside the pipes (2) with a cement.
    [2]
    2. The method according to claim 1, characterized in that the tubes (2) in 2 to 6 rows (5), preferably in 3 to 4 rows (5) are arranged side by side.
    [3]
    3. The method according to claim 1 or 2, characterized in that each row (5) is arranged offset by approximately 50% to the adjacent row (5).
    [4]
    4. The method according to claim 1 to 2, characterized in that the pipes (2) are pressed into the soil behind an angular support wall of a bridge structure, or that the pipes (2) are pressed into the soil by listed walls or hydraulic structures.
    [5]
    5. The method according to claim 4, characterized in that the tubes (2) are pressed in at least up to the bottom point of a bridge structure, a wall or a water structure.
    [6]
    6. The method according to claim 4 or 5, characterized in that the upper edge of the tubes (2) extend to the crown of the angled support wall (1) or to the earth level of a wall or a hydraulic structure.
    [7]
    7. The method according to any one of claims 4 to 6, characterized in that the rows (5) over the entire width of the angular support wall (1) or a wall or a hydraulic structure are formed.
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the tubes (2) arranged directly on the angled support wall (1) sit on the foot element (3) of the angled support wall (1).
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that 4 to 5 pipes (2) are provided per square meter.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the soil is removed from the pipes (2).
    [11]
    11. The method according to any one of claims 1 to 10, characterized in that the tubes (2) are filled with a cement or cement mixture.
    [12]
    12. The method according to any one of claims 1 to 11, characterized in that a micro-cement is used as the cement.
    [13]
    13. The method according to one or more of claims 1 to 12, characterized in that the injected substance moisture is supplied in a sufficient amount or that the substance is enriched with a sufficient amount of moisture or that the injected substance with the moisture present in the soil or filler material at least partially reacts and hardens.
    [14]
    14. The method according to one or more of claims 1 to 13, characterized in that a cement or cement mixture with a fineness of 3500 to 20,000 Blaine (cm 2 / g) is used as the substance.
    [15]
    15. The method according to one or more of claims 1 to 14, characterized in that the substance is fed through an injection lance to the soil or filler material, which is adjustable in depth.
    [16]
    16. The method according to one or more of claims 1 to 15, characterized in that an ongoing and / or subsequent control of the substance pressing is carried out by quality assurance measures.
    [17]
    17. The method according to one or more of claims 1 to 16, characterized in that, for example, a georadar is used to carry out the quality assurance measures, is used during the injection method for analyzing the floor area.
    CH 713 699 A2
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    同族专利:
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    DE102017003251A1|2018-10-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT367131B|1975-10-10|1982-06-11|Ribbert Fels Und Grundbau Gmbh|FOUNDATION, ESPECIALLY FOR A DAM|
    KR100436896B1|2001-07-19|2004-06-23|내경엔지니어링|Construction method for back-fill area of abutment|
    CN1380471A|2002-05-16|2002-11-20|王自成|Method for elimianting subsidence of backfilled roadbed, bridge abutment and culvert wall back|
    DE10242264B4|2002-09-12|2005-02-24|Josef Möbius Bau-Gesellschaft |Process for the production of an interactive support system made of geotextile coated sand pillars and the pending floors for the removal of building and traffic loads with unsustainable subsoil|
    JP5062559B2|2007-06-20|2012-10-31|清水建設株式会社|Ground improvement method|
    JP2009046611A|2007-08-21|2009-03-05|Dai Ichi Kogyo Seiyaku Co Ltd|Grouting material for stabilizing ground|
    JP5351720B2|2009-11-26|2013-11-27|株式会社ノム|Ground improvement method|
    DE102012022164A1|2012-05-09|2013-11-14|Werner Möbius Engineering GmbH|Structural system for diverting vertical and horizontal loads from elongated building areas to less stable ground, has soil columns, which are covered with geotextile material and form multiple linked systems by connecting elements|
    法律状态:
    2021-01-15| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017003251.3A|DE102017003251A1|2017-04-04|2017-04-04|Process for subsequent soil consolidation|
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