EP3502352A1 - Système d'étayage polygonal à n uds d'intersection permettant de renforcer une fouille de fondation - Google Patents

Système d'étayage polygonal à n uds d'intersection permettant de renforcer une fouille de fondation Download PDF

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Publication number
EP3502352A1
EP3502352A1 EP18214452.7A EP18214452A EP3502352A1 EP 3502352 A1 EP3502352 A1 EP 3502352A1 EP 18214452 A EP18214452 A EP 18214452A EP 3502352 A1 EP3502352 A1 EP 3502352A1
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EP
European Patent Office
Prior art keywords
polygon
steel
excavation
node
spraying system
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Granted
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EP18214452.7A
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German (de)
English (en)
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EP3502352B1 (fr
Inventor
Markus MARTI
Juan OLAVARRIA
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Meier+jaggi AG
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Meier+jaggi AG
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Publication of EP3502352A1 publication Critical patent/EP3502352A1/fr
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    • 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
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits

Definitions

  • the present invention relates to a spraying system for the stiffening of construction pits in the form of a convex polygon or polygon segment comprising at least one steel pressure element with assembly table, a method for producing the spraying system, as well as the use of the spraying system.
  • the walls of the excavated soil are usually secured by means of a wall protection, for example with a sheet pile wall. This prevents uncontrolled collapse of soil and allows substantially vertical side walls of the excavation.
  • Such fuses are often subjected to tremendous pressure from the soil. So that the wall protection does not collapse, this must be fixed, for example by means of ground anchors in the ground. If such ground anchors are not possible or not suitable, a so-called sprouting, also called bracing or stiffening of the wall, is created. Thus, the pressure from the ground side counterpressure is countered to keep the wall protection vertical and prevent bending or even collapse of the wall protection.
  • Springs known today are linear bars or girders.
  • the EP 2 453 062 A1 describes a method and a modular system for spraying the lateral surfaces of a pit.
  • the system comprises various modules which can be assembled as required because of their standardized coupling connections.
  • Several modules together form a linear spritz structure, which also comprises at least one adjustable tension module and an end fitting.
  • the Tension module allows the insertion of a press to give the necessary pressures to the spray. It is also possible that the spray structure is mounted in the corner of the excavation orthogonal to the walls.
  • linear Spr intelligentten is used, which are arranged in parallel in the excavation each other. This leads to a relatively narrow grid on a variety of spit structures. This complicates the excavation of the excavation, since the construction equipment must not touch the spit structures during work and maneuvering the construction vehicles. Also, the narrow grid makes it difficult to lower and hoist construction vehicles, excavated material and other loads.
  • the CN 204 298 832 U discloses a horizontal support structure with a concentric circular frame for deep excavations.
  • the supporting structure is made entirely of reinforced concrete. It is suitable for producing very large diameter spits.
  • the intersections resulting from the production are not separate elements, but they are created together with the whole structure in reinforced concrete and thus on site.
  • it is first necessary to laboriously create a reinforcement of the entire structure by means of reinforcing iron. Subsequently, the reinforcement is shuttered by means of formwork elements and filled with concrete, whereby a steel-concrete composite is obtained.
  • After use of the reinforced concrete structure it must be degraded with great effort, the degraded parts of the structure are not or only with great effort recyclable.
  • the proposed support structure can not be tensioned, whereby a larger number of vertical beams and side struts is needed.
  • the problem is in addition to the complex production and the concrete shrinkage, which can lead to cracks and thus weak points in the reinforced concrete structure.
  • the object of the present invention is therefore to provide a spraying system which avoids the disadvantages of the prior art.
  • the spraying system is to be able to be set up quickly and in a simple manner and be dismantled again after its use.
  • the spray system should allow the largest possible contiguous opening of the excavation and thereby allow a free vertical transport of loads such as excavated material, building materials and construction equipment through this opening.
  • the spray system should be used both for excavations in solid soil such as soil, rocks, etc. and / or for excavations in waters.
  • the Spriesssystem should be designed so that the smallest possible number of vertical, rammed into the ground stand is necessary to u.a. to allow the free movement of construction machinery as much as possible.
  • the spraying system should also be able to be tensioned to protect adjacent excavation walls - for example, near roads, railroad tracks or buildings - even from the slightest movement changes. Also, the Spriesssystem - or at least the greater part of it - should be reusable after its removal.
  • a spraying system (1) for stiffening excavations (2) with minimal hindrance in the excavation area of the excavation (2) by the stiffening wherein the spraying system (1) with at least one spurt in the form of a convex polygon or polygon segment Sides and corners (3), characterized in that the spraying system (1) at least one Polygonrouselement (31) made of steel, at least one further steel element and at least one steel pressure element (6) with mounting table (11).
  • the inventive and inventively obtained spray system (1) for the construction of construction pits (2), wherein the excavation wall (21) of the excavation (2) is a provisional demarcation to the soil and / or to a body of water and / or with the spraying system (1) to obtain a minimum obstruction in the excavation area of the excavation (2), in particular a minimum disability in work of the construction and construction ancillary industries in the excavation (2).
  • the inventive novel spraying system (1) the process according to the invention and the use according to the invention have a large number of advantages.
  • the spraying system (1) can be created very quickly and efficiently compared to known spraying system.
  • Most of the individual components can be created at the factory and dimensioned correctly, so that all - or at least most - components must be assembled on the construction site only modular.
  • the steel pressure elements (6) used according to the invention can be created quickly and without much effort on site. As a result, the shape of the steel pressure elements (6) to be exhibited is accurately obtained with the corresponding dimensions and angles in a simple manner.
  • the spraying system (1) and the spraying system (1) obtained according to the method have a very large contiguous opening to the excavation (2). A comparably large opening can not be achieved with conventional tensionable spraying systems.
  • the spraying system (1) according to the invention and the spray system (1) used according to the invention can surprisingly absorb the forces acting on the spraying system (1) surprisingly well. So it can also - compared to conventional systems - a lighter spray with less wall thickness and weight can be used. This leads to positive effects such as fewer transports and a faster establishment and reduction of the sprouting.
  • the modular structure of the Spriesssystems (1) inter alia, with the nodes (32, 32 ', 42) and the optional wedges (10) allows in most cases right angles and connections. This is the case in particular when the nodal points (32, 32 ', 42) and wedges (10) are designed as steel pressure elements (6).
  • the spraying system (1) has a much greater sustainability.
  • Various components of the spraying system (1) can also be prefabricated outside the construction site, whereby the spraying system (1) is constructed faster and the construction time is shortened.
  • the spraying system (1) after use be dismantled quickly and easily, with all or at least most of the components can be reused. Consequently, the spraying system (1) and the method for producing the spraying system - in comparison with known spraying systems - are more ecological and economical.
  • the spraying system (1) can be tensioned in a simple manner by inserting a tensioning element into the polygon or polygon segment (3, 3 ') and subsequently pressing it.
  • pressure can be exerted on the excavation wall (21) so that it does not move in the direction of the excavation (2).
  • This is particularly important if the terrain area next to the excavation (2), and thus also the excavation wall (21), laterally not by a few centimeters in the direction of the excavation (2) may move - for example, if the excavation in near a road, an iron train and / or a building is created.
  • the spraying system (1) may also comprise two or more polygons or polygon segments (3), which are arranged side by side and interconnected to increase stability.
  • the construction works in the range of a first polygon or polygon segment (3) can be forced, whereby the first polygon or polygon segment (3) can be removed earlier to continue the construction work.
  • the second and the further polygons or polygon segments (3 ') can nevertheless persist.
  • this approach allows the same workers to move from one polygon region to the second, and then to other polygon regions. This procedure is often desired by the site manager and has many advantages.
  • the excavation (2) is a pit in the solid soil and is thus obtained by the removal of excavated material in the form of soil, rock, etc.
  • a fixing device (7) with fewer elements is required compared to the prior art. This is particularly the case when used as a fixing device (7) rammed into the ground stand (71), which must be used in a significantly lower number per unit area. This gives the drivers of construction vehicles such as excavators, tractors or dumpers a much larger free driving surface.
  • an excavation (2) is obtained with minimal disability in the excavated area, what u.a. allows a free vertical transport of loads such as excavated material, construction materials and construction machinery.
  • the ancillary building industry is much less affected, for example, when laying the sewer or electrical pipes in the underground.
  • the lesser number of uprights (71) that must be toughened during construction results in fewer penetrations in the structure to be built. Accordingly, when dismantling the spraying system (1), fewer stands (71) have to be removed and consequently fewer penetrations have to be closed.
  • the inventive and inventively produced Spriesssystem (1) creates a novel, easy to produce and with little effort delimitation to the body of water become.
  • the demarcation to the body of water is designed as a construction pit wall (21) which directly adjoins the polygon or polygon segment (3) of the spraying system (1).
  • the inventive Spriesssystem (1) only one wall, ie a pit wall (21) without filler needed. This saves the time-consuming and cost-intensive transport of the filling material to the construction site and then away from the construction site again.
  • excavation pits (2) are understood to mean a larger depression of a terrain surface caused by humans in order to create a building.
  • Suitable terrain surfaces are, for example, solid soil such as earth, rocks, etc. and / or waters and the building can be a building construction, for example a building, or a civil engineering, for example a tunnel.
  • So excavation pits (2) in the solid soil by removing excavated material such as soil, rock, etc., and / or as delimitation in or to waters in which water is pumped as excavated material from the excavation, created.
  • an excavation (2) is arranged at an angle, it typically comprises at least 3, often at least 4, excavation walls (21) which, by means of suitable protection, i. Splash, secured to prevent collapse of the lateral soil or rock.
  • the excavation (2) - and thus the excavation wall (21) - can also be arranged rounded, for example, as a delimitation in or to waters.
  • the term excavation (2) does not mean trenches whose excavation walls are secured, for example, by means of telescopic struts.
  • Such a device for trenching is in the US-A-2017/0002538 described. This is not suitable for construction pits (2) in the context of the present invention, neither for construction pits in solid ground nor for excavations in waters.
  • the excavation wall (21) is the demarcation of the excavation (2).
  • the excavation wall (21) is secured by means of suitable protection in order to to prevent a collapse and / or erosion of the construction pit wall (21).
  • suitable safeguards include the carrier screed wall, scaffold wall, building wall, trench wall, bored pile wall and sheet piling based on a plurality of bung elements, in many cases the sheet pile wall comprising a plurality of bung elements being preferred. These fuses are often rammed vertically in a variety of juxtaposed elements in the ground.
  • Longarinen (22) are elongated elements, which are usually attached horizontally to the excavation wall (21). As a result, long arms (22) connect a multiplicity of elements arranged vertically next to one another for securing the construction pit wall (21). Thus, longarins (22) distribute a force on them over a larger area of the excavation wall (21).
  • long arms (22) are made of steel and have, for example, an H-profile, i. they are designed as H-beam.
  • Long araines (22) are known to the person skilled in the art.
  • Larger excavation pits (2) can also have two or more sprouts, which are arranged side by side and / or vertically one above the other - and usually in parallel to each other horizontally.
  • the inventive spraying system (1) produced according to the invention and used according to the invention is understood as meaning a spraying comprising a convex polygon or polygon segment (3), which is arranged horizontally.
  • the spraying system (1) comprises the at least one horizontally arranged spraying in the form of a convex polygon or polygon segment and a fixing device (7) which is generally arranged in the vertical direction and which holds the polygon or polygon segment in a horizontal plane, ie fixes it.
  • the sprinkler system (1) may be adjacent to the polygon or polygon segment (3), i. in the same horizontal plane, one or more of the polygon or polygon segment (3) adjacent convex polygons or polygon segments (3 ') have. This is particularly helpful in oblong shaped pits.
  • the spraying system (1) may also include one or more outer polygon sections (4). In this case, the polygon section (4) is arranged outside the polygon (3, 3 ') - or a subarea thereof - or outside the polygon section (3, 3').
  • the spray system (1) is suitable for arbitrarily large and arbitrarily deep excavations (2), in particular for construction pits (2) with a width of about 20 meters and more.
  • excavation pits (2) with a width of 65 meters or more can also be equipped with the spraying system (1). This allows that typically all known today excavation pits (2) can be secured with the spraying system (1).
  • excavation pits (2) By juxtaposing two or more polygons or polygon segments (3, 3 ') both in the longitudinal direction of the excavation pit and optionally in its width, excavation pits (2) with very large dimensions can also be equipped with the spraying system (1) according to the invention. Accordingly, the length of the construction pits (2) can be a multiple of the width of the excavation (2). For example, a pit (2) may have a width of 100 meters or more and a length of 300 meters or more.
  • the spraying system (1) can also comprise two or more polygons or polygon segments (3, 3 ') and possibly polygon sections (4), which are typically arranged vertically above or below each other. In this case, a height distance of about 2 to 10 meters or more is preferably maintained between the polygons or polygon segments (3, 3 '), whereby even very deep excavations (2) can be easily secured.
  • the polygons or polygon segments (3, 3 ') may have the same and / or a different shape. If two or more polygons or polygon segments (3) are arranged vertically one above the other, they preferably have the same dimensions and thus the same shape. As a result, not only can the stands (71) - if any - be shared, but the vertical obstruction is minimized.
  • the inventive spray system (1) can be attached directly to the excavation wall (21) of the excavation (2).
  • an attachment in particular a longarine (22), attached to which the spraying system (1) is attached to the excavation wall in the horizontal direction and at the height of the spraying system. This allows a distribution of the pressure exerted by the spray system (1) pressure on the entire length of the excavation (2).
  • the inventive spraying system (1) for stiffening excavation pits (2) with minimal obstruction in the excavation area of the excavation (2) by the stiffening has at least one spraying in the form of a convex polygon or polygon segment with sides and corners (3).
  • the spraying system (1) comprises at least one polygonal side element (31) made of steel, at least one further steel element and at least one steel pressure element (6) with a mounting table (11).
  • the at least one further steel element comprises a polygon side element (31), a lateral pressure distribution element (5), a part of a construction pit wall (21) or a longarine (22) and / or a node (32) If the at least one further steel element represents a steel pressure element (6), two steel pressure elements (6) can also be arranged next to one another, for example in the form of a nodal point (32) and a wedge (10 ).
  • the spraying in the form of a convex polygon or polygon segment (3) comprises at least one node (32), at least one lateral pressure distribution element (5), a fixing device (7) comprising at least one stand (71). and / or a suspension device (72), as well as possibly a swivel joint (9) and / or a wedge (10), wherein the node (32) and / or the wedge (10) can also be designed as a steel pressure element (6).
  • the excavation (2) in solid soil and the spraying system (1) delimits the excavation (2) with the excavation wall (21) of solid ground.
  • the excavation (2) in or on a body of water and the spray system (1) delimits the excavation (2) with the excavation wall (21) of water and possibly partially from solid ground.
  • the spraying system (1) has a very high flexibility, whereby the spraying system (1) can be optimally adapted to each individual excavation pit.
  • convex polygon (3) is meant a closed polygon with a plurality of corners, i. Nodes (32), and with straight, i. linear, understood sides that connect the corners together.
  • the convex polygon (3) only has internal angles smaller than 180 °.
  • the polygon (3) typically comprises at least 5, preferably at least 10 or more sides.
  • the convex polygon (3) can also have 30, 50 or more sides.
  • the polygon (3) usually has the same number of corners as pages.
  • the convex polygon (3) comprises a plurality, i.
  • nodes typically at least 5, preferably at least 10, nodes (32), at least one polygonal side element (31) made of steel, at least one further steel element and at least one steel pressure element (6) with assembly table (11), wherein at least one node (32) as steel pressure element (6 ) is trained.
  • nodes typically at least 5, preferably at least 10, nodes (32), at least one polygonal side element (31) made of steel, at least one further steel element and at least one steel pressure element (6) with assembly table (11), wherein at least one node (32) as steel pressure element (6 ) is trained.
  • a part of the excavation wall (21) or the longarine (22) form one or more sides of the polygon (3).
  • convex polygon segment (3) is understood to mean part of the convex polygon (3).
  • the polygon segment (3) is not closed, but has a beginning and an end.
  • the convex polygon segment (3) comprises at least one corner with two straight sides, ie at least one node (32), at least one polygon side element (31) of steel and at least one other steel element.
  • the convex polygon segment (3) comprises at least one steel pressure element (6) with assembly table (11), wherein the steel pressure element (6) can represent - or at least one - node (32).
  • the convex polygon segment (3) is used in a preferred embodiment in construction pits, which are a delimitation to waters.
  • convex polygon (3) and the convex polygon segment (3) differ only in the closed or open form, they are collectively referred to as a convex polygon or polygon segment (3), or just polygon or polygon segment (3).
  • the excavation (2) is in a solid ground, at least one corner of the polygon or polygon segment (3), preferably the plural, i. more than 50%, in particular more than 70%, of the corners not arranged on the construction pit wall (21).
  • the corners, which are not arranged on the excavation wall (21), are located within the excavation (2) and typically on a mounting table (11) which on the fixing device (7), a Polygonenelement (31, 31 ', 41) or is attached to a pressure distribution element (5) in the form of a strut.
  • the inventive spray system (1) differs significantly from the spray system, which in the KR-B-101 474 515 is disclosed. Because this connects only excavation walls with a linear element with each other, with all corners of the polygon are located on the excavation wall. Such spray systems are only suitable for small excavations in solid ground.
  • At least one side of the polygon or polygon segment (3) consists of a Polygon-element (31) and at least one other side consists of a further steel element, which is a Polygontex-element (31), a lateral pressure distribution element (5), a part of a construction pit wall (21) or a longarine (22), and / or a node (32) in the form of a polygonal steel element with at least 3 corners.
  • the convex polygon or polygon segment (3) is usually horizontal, i. in a horizontal plane, arranged.
  • the spraying system (1) additionally comprises a convex polygon or polygon segment (3 ') adjacent to the polygon or polygon segment (3) with at least two polygon side elements (31') of steel and / or at least one node (32 ') an outer polygon section (4) with at least two polygon side elements (41) made of steel and at least one node (42).
  • the convex polygon or polygon segment (3 ') is optional and is especially used for elongated pits. It is a polygon or polygon segment adjacent to the polygon or polygon segment (3) and usually arranged in the same horizontal plane as the polygon or polygon segment (3).
  • the polygon or polygon segment (3 ') may have the same or a different shape as the polygon or polygon segment (3), the convex polygon or polygon segment (3') also having only internal angles smaller than 180 °.
  • convex polygon (3 ') analogously to the polygon (3) is a closed polygon with a plurality of corners, i. Nodes (32 '), and even, i. linear, sides, i. Polygon side elements (31 '), which connect the corners together, understood.
  • the polygon (3 ') typically comprises 5 or more pages.
  • the convex polygon (3 ') can also have 30, 50 or more sides.
  • convex polygon segment (3 ') is understood analogously to the polygon segment (3) to be a part of the convex polygon (3'). Thus, the polygon segment (3 ') is not closed, but has a beginning and an end.
  • the convex polygon segment (3 ') comprises at least one corner with two straight sides, i. at least one node (32 ') with two Polygon frictionmaschinen (31').
  • the sides of the polygon or polygon segment (3 ') typically consist of one polygon side element (31') per side, one or more sides of the polygon (3 ') being formed by a part of the pit wall (21) instead of the polygon side element (31') can.
  • the outer polygon section (4) is optional and is particularly for larger sized excavation pits and outside the polygon or Polygonabitess (3, 3 ') for reinforcing the polygon or polygon portion (3, 3') arranged and surrounds a part of the polygon (3, 3 ') or the polygon segment (3,3'), or a part thereof.
  • the polygon section (4) comprises two or more polygon side elements (41) and at least one node (42) connecting the polygon side elements (41).
  • the outer polygon section (4) if this is necessary to reinforce the polygon or Polygon segment (3, 3 ') - along the excavation wall (21) arranged and set back the polygon segment (3, 3 ') within the excavation (2), attached to a fixing device (7) and by means of Druckverteilimplantationn (5) - typically struts - connected to the outer polygon segment (4).
  • the polygon section (4) is used in particular where more than one polygon or polygon segment (3) is to be used due to the dimension of the excavation (2), but no further, for example, no second, adjacent polygon or polygon segment (3 ') fits , By inserting one or more polygonal sections (4), optimum excavation of the excavation (2) is obtained.
  • a polygon section (4) may, for example, have the size of half a polygon or polygon segment (3) or even consist of only two polygon lateral elements (41) and one node (42). If two or more polygons or polygon segments (3, 3 ') are used, the outer polygon section (4) is arranged outside the polygons or polygon segments (3, 3') and / or between the polygons or polygon segments (3, 3 ').
  • the polygon or polygon segment (3) of the inventive spraying system (1) comprises at least one - often a plurality - Polygon side elements (31) made of steel.
  • the polygon or polygon segment (3 ') of the inventive spraying system (1) comprises at least one - often also a multiplicity of - polygon side elements (31') made of steel and the outer polygon section (4) comprises at least one - often also a multiplicity of - polygon side elements (41) made of steel.
  • the polygon side elements (31, 31 ', 41) may be identical or different in their dimensions.
  • Each polygon side element (31, 31 ', 41) forms one side, i. Edge, the convex polygon or polygon segment (3, 3 ') or the outer polygon section (4).
  • the polygon side elements (31, 31 ', 41) form the connecting line of the individual corners of the convex polygon or polygon segment (3. 3'), or the end sides of the polygon segments (3, 3 ') respectively. of the outer polygon section (4), wherein selected sides of the polygon or polygon segment (3, 3 ') instead of a polygon side element (31) are formed by the or parts of the construction pit wall (21) or long arms (22).
  • the Polygonsieri (31, 31 ', 41) made of steel may have at their ends a pressure distribution plate (12), which typically adjacent to the nodes (32, 32', 42).
  • This embodiment is particularly preferred when i) the Polygoncyanelement (31, 31 ', 41) to a steel pressure element (6), in particular in the form of a node (32, 32', 42) or a wedge (10) adjoins, and / or if ii) between a Polygon pleasantelement (31, 31 ', 41) and a node (32, 32', 42), a clamping element (8) is arranged.
  • the polygon side elements (31) of the polygon or polygon segment (3), the polygon side elements (31 ') of the optional adjacent polygon or polygon segment (3') and the polygon side elements (41) of the optional outer polygon section (4) can be used for the polygon or Polygon segment (3), the polygon or polygon segment (3 ') and the polygon section (4) each have identical or different dimensions.
  • the steel polygonal side elements (31, 31 ', 41) have the same dimensions or are made of the same. Their lengths of the polygon side elements (31, 31 ', 41) are essentially determined by the dimension and number of corners of the polygon or polygon segment (3, 3') and the polygon section (4) and can be, for example, 1 to 30 m.
  • Suitable non-limiting Polygon shape (31, 31 ', 41) include tubes, for example tubes with an outer diameter of 610 mm or 800 mm and a wall thickness of 16 mm or 20 mm, for example 610 x 16 mm or 800 x 20 mm, and / or H-beams, for example H-beams HEB 300 or HEB 600.
  • Suitable pipes and H-beams are commercially available and known to the person skilled in the art. It can also make the correct selection of the polygon side elements (31, 31 ', 41) for the respective polygons or polygon segments (3, 3') and polygon sections (4).
  • the ends of the Polygonconsettiver (31, 31 ', 41) are preferably rectangular, which allows a simple, for example, modular, construction with rapid assembly and disassembly of the spray system (1). In addition, there is no waste because no miter needs to be created.
  • a pressure distribution plate (12) - typically made of steel - is attached, in particular welded, to the respective end of the polygon side elements (31, 31', 41).
  • the nodes (32, 32 ', 42)
  • the node (32) forms a corner of the polygon or polygon segment (3)
  • the node (32 ') forms a corner of the polygon or polygon segment (3')
  • the node (42) forms a corner of the outer polygon section (4).
  • the nodes (32, 32 ', 42) interconnect two polygon side elements (31, 31', 41) or a polygon side element (31, 31 ', 41) and a portion of a pit wall (21) or longarine (22)
  • the Polygonitudeiata (31, 31 ', 41) or the Polygon parksmaschine (31, 31', 41) and the part of a excavation wall (21) or Longarine (22) are arranged angled to each other.
  • the node (32, 32 ', 42) also adjoins at least one pressure distribution element (5) by the forces acting on the node (32, 32', 42) in the direction of the construction pit wall (21), adjacent polygon or polygon segment (3 ') or outside Polygonabites (4) laterally and horizontally dissipate.
  • the nodes (32, 32 ', 42) of a polygon or polygon segment (3, 3') and an outer polygon section (4) can all be the same or different.
  • the node (32, 32 ', 42) is preferably designed as a steel pressure element (6) or as a rotary joint (9) with at least 2, in particular with 3, 4 or 5, rotatable joint parts.
  • the steel pressure element (6) is preferably in the form of a polygonal steel element with at least 3 corners, preferably with at least 4 corners, and can be prefabricated at the factory or directly on the construction site are created, whereby the correct angle can be optimally adjusted.
  • the node (32, 32 ', 42) as a steel pressure element (6) may also be formed in the form of a tube or cylinder.
  • a steel tube or steel cylinder is preferably used as a stand (71), wherein the node (32, 32 ', 42) typically, in particular preferably, on a mounting table (11) is arranged.
  • the mounting table (11) is either equipped with a hole and pushed from above the stand (71) and fixed, or two or more parts from the side fixed on the stand (71), in particular welded.
  • adjacent Polygon soundide (31, 31', 41) and Druckverteiletti (5) in the form of struts at the ends of a pressure distribution plate (12) see Fig. 8 ).
  • the pressure distribution plates (12) of the polygon side elements (31, 31 ', 41) and pressure distribution elements (5) adjoining the tube or the cylinder can be welded together with a fitting piece (61) in order to increase the stability of the junction point (32, 32'). , 42) - and thus the steel pressure element (6) - to increase with the adjacent elements (31, 31 ', 41, 5).
  • the node (32, 32 ', 42) in the form of a polygonal steel element - in particular an equilateral, polygonal steel element, with at least 3, in particular at least 4 corners these polygonal steel elements can be prefabricated at the factory.
  • the steel element is advantageously up hollow on necessary reinforcing struts in the interior, whereby a large weight saving can be achieved.
  • the optimal for the corresponding angle polygonal steel element is used, which in many cases no wedge (10) for optimal adjustment of the angle must be used.
  • the swivel joint (9) preferably comprises at least 2, in particular 3 to 5, rotatable joint parts around the polygon sides, in particular the polygon side elements (31, 31', 41 ) and / or the construction pit wall (21) or Longarine (22), the pressure distribution elements (5), in particular struts, and / or optionally suspension carrier (73) to be interconnected.
  • the node (32, 32 ', 42) connects a polygon side element (31, 31', 41) to the excavation wall (21) or the longarine (22), the node (32, 32 ', 42) is preferably in the form of a welded one Connection or a pivot (9) between the Polygonmonielement (31, 31 ', 41) and the excavation wall (21) or the Longarine (22).
  • the excavation wall (21) or the longarine (22) also form the pressure distribution element (5).
  • the wedge (10) serves for the optimal adjustment of angles in the spraying system (1), in particular of angles of sides of the polygon or polygon segment (3, 3 '), of the outer polygon section (4) and / or of pressure distribution elements (5), in particular of struts.
  • the wedge (10) is preferably formed in the form of a steel pressure element (6). However, the wedge (10) may also be in the form of a metal wedge.
  • the wedge (10) is preferably arranged on a mounting table (11) and preferably adjoins a node (32, 32 ', 42).
  • the wedge (10) is a steel pressure element (6)
  • the wedge (10) is made on site.
  • the longer side faces of the wedge (10) are typically arranged by i) the pressure distribution plates (12) which are preferably arranged on the polygon side elements (31, 31 ', 41) and on the pressure distribution elements (5) in the form of struts, and / or by ii) the side surfaces of an adjacent node (32, 32 ', 42) or a longarine (22) educated.
  • the wedge (10) As a shorter end face or opposite end faces of the wedge (10) at least one fitting piece (61) made of steel is used, which is cut to the necessary size and then inserted between the longer side surfaces of the resulting wedge (10). Subsequently, the interfaces are typically welded together. This allows the size and angle of the wedge (10) can be optimally adapted to the specific circumstances. If required, ie to increase the stability, further fitting pieces (61) can be cut and inserted into the cavity of the wedge (10) and welded.
  • the wedge (10) is a metal wedge, it is preferably manufactured at the factory and for example at different angles and different sizes, whereby the wedge (10) with the most optimal angle can be used if required.
  • Metal wedges have the advantage that are delivered to the construction site in finished construction and can be removed and reused after using the Spriesssystem (1). This saves time and material.
  • FIG Fig. 5 A non-limiting embodiment of a wedge (10) is shown in FIG Fig. 5 shown.
  • Pressure distribution plates (12) are preferably arranged at the ends of polygon side elements (31, 31 ', 41) or pressure distribution elements (5) - for example struts. By the pressure distribution plates (12), the forces acting from the Polygon touch electroden (31, 31 ', 41) or the pressure distribution elements (5) on the nodes (32, 32', 42), evenly over a larger area, in particular the lateral Surface of the nodes (32, 32 ', 42), distributed.
  • the pressure distribution plates (12) are typically plan - for example rectangular - steel plates with a thickness of typically 3 to 5 cm.
  • the ends of the polygon side elements (31, 31 ', 41) and pressure distribution elements (5) have pressure distribution plates (12) in particular when the pressure distribution plates (12) are connected to an on-site, i. on the construction site and usually on a mounting table (11), manufactured steel pressure element (6) in the form of a node (32, 32 ', 42), a wedge (10) adjacent, or if the steel pressure element (6) a side portion of a Polygeititenelement (31) or a pressure distribution element (5) in the form of a strut with a further steel element, in particular the end of a pressure distribution element (5) connects.
  • the pressure distribution plates (12) generally additionally serve as side surfaces of the node to be created (32, 32 ', 42), wedge (10) or connecting element.
  • steel pressure element (6) is understood to mean a connecting element made of steel, which connects at least two steel elements to one another.
  • At least one steel pressure element (6) used according to the invention preferably the majority, ie more than 50%, in particular more than 70%, of the steel pressure elements (6), is not arranged on the excavation wall (21) ,
  • the steel pressure elements (6) which are not arranged on the excavation wall (21), located within the excavation (2), ie typically on a mounting table (11) which on the fixing device (7) on a Polygon intersectelement (31, 31 ', 41) or to a pressure distribution element (5) is attached in the form of a strut.
  • the steel pressure element (6) is a node (32, 32 ', 42)
  • the steel pressure element (6) factory for example in the form of a polygonal steel element with at least 3 corners are prefabricated.
  • the steel pressure element (6) in the center a center of steel, a so-called Stahltikvermaschinelement (62), preferably in the form of a short steel tube or a short steel cylinder, which is connected to the side centers of the polygonal steel element by means of so-called fitting pieces (61) made of steel is.
  • the steel pressure element (6) can also be produced by the customer as a node (32, 32 ', 42), wedge (10) and / or in the form of a further connecting element, typically on a mounting table (11). This gives the steel pressure element (6) exactly the correct angle and the required distances between the adjacent Polygonzaniden (31, 31 ', 41) and / or pressure distribution elements (5). Thus, the at least two steel elements can be connected together as best as possible.
  • the pressure distribution plates (12) of the polygon side elements (31, 31', 41) to be connected and / or pressure distribution elements (5) in the form of a strut preferably form the Pages, or most of it, of the node (32, 32 ', 42). If the lateral edges of the pressure distribution plates (12) do not touch, they can be connected to each other by means of other steel plates, for example, welded.
  • a stator (71) in the form of a tube or a cylinder can serve as a steel pressure distribution element (62).
  • a tube cut to size can be inserted in the form of an isosceles trapezoid and optionally welded to the pressure distribution plates (12) with a fitting piece (61) arranged laterally on the trapezoid.
  • the steel pressure element (6) is produced by the customer as a wedge (10), the pressure distribution plates (12) of the adjoining polygon side elements (31, 31 ', 41) and / or pressure distribution elements (5), or one side of a node (32, 32 ', 42) or a longarine (22), typically the longer side surfaces of the wedge (10).
  • the shorter end face or faces of the wedge (10) to be created are created and welded with a steel fitment (61), whereby the size and the angle of the wedge (10) can be optimally adapted to the specific circumstances.
  • at Demand ie to increase the stability, more fitting pieces (61) can be cut and inserted into the cavity of the wedge (10) and welded.
  • the steel pressure element (6) made on site as another connecting element is preferably a side portion of a Polygon intersectingelements (31, 31 ', 41) or a Druckvermaschinelements (5) in the form of a strut with another steel element, in particular the end of a pressure distribution element (5) and thus typically the end of a strut connected.
  • fitting pieces (61) are used to connect non-adjacent areas with each other.
  • a Stahltikvermaschinelement (62) with other fitting pieces (61) which connect the Stahltikvermaschinelement (62) with the sides of the steel pressure element (6) can be used.
  • the individual elements are preferably welded together.
  • the steel pressure element (6) on the mounting table (11) is arranged and the steel pressure element (6) connects a Polygonenedelement (31, 31 ', 41) with at least one another steel element of the polygon or polygon segment (3).
  • the ends of the at least one polygon side element (31, 31 ', 41) adjoining the steel pressure element (6) and / or the at least one lateral pressure distribution element (5) have a pressure distribution plate (12), which can serve as a side surface in the production.
  • assembly table (11) is understood to mean a substantially planar surface, to which elements of the inventive spraying system (1) can be provided. Suitable elements include polygon side elements (31, 31 ', 41), nodes (32, 32', 42), in particular nodal points (32, 32 ', 42) in the form of a steel pressure element (6), pressure distribution elements (5), in particular in the form of Struts, wedges (10) and optionally clamping elements (8) with fitting (81).
  • the assembly tables (11) serve in particular as a support for the steel pressure elements (6).
  • the mounting tables (11) are typically planar - for example rectangular or round - steel plates with a thickness of typically 2 to 3 cm.
  • the assembly tables (11) are preferably attached to the fixing device (7), in particular on or on uprights (71) - in particular welded.
  • the polygon or polygon segment (3, 3 ') or the outer polygon section of the inventive sprinkler system (1) obtained according to the invention comprises at least one clamping element (8) with fitting (81), whereby the polygon or polygon segment (3, 3 ') or the outer polygon section (4) has a tension, wherein the tension element (8) with fitting (81) is preferably arranged between a polygon side element (31, 31', 41) and a node (32, 32 ', 42) ,
  • a tensioning element (8) is used in particular when the excavation wall (21) must not move laterally in the direction of the excavation (2) - for example, when the excavation (2) created in the vicinity of a road, an iron train and / or a building becomes. Because of the engagement a clamping element (8) presses the spraying system (1) of the excavation wall (21) sufficiently high forces against that the excavation wall (21) is stable and does not collapse.
  • a clamping element (8) is preferably arranged between one end of a polygon side element (31, 31 ', 41) with a pressure distribution plate (12) and a node (32, 32', 42).
  • FIG Fig. 7 A non-limiting embodiment of a suitable clamping element (8) with fitting pieces (81) is shown in FIG Fig. 7 shown.
  • the hinge (9), i. Joint (9) comprises at least two rotatable joint parts, which are interconnected, for example with a bolt.
  • the rotating parts of the rotary joint (9) can be rotated around the bolt, for example up to an angle of +/- 90 °.
  • the rotary joint (9) is preferably i) as a node (32, 32 ', 42) and / or ii) designed as a connecting piece. If necessary, after the spraying system (1) is finished and the angles of the hinges (9) are adjusted correctly, the swivel (9) can be stiffened, for example by means of welding or a suitable bolt.
  • the rotary joint (9) preferably comprises at least 2, in particular 3 to 5, rotatable joint parts around the polygon sides, in particular the polygon side elements (31, 31', 41). and / or the construction pit wall (21) or longarine (22), the pressure distribution elements (5), in particular struts, and / or optionally suspension carrier (73) to be interconnected, for example by means of welding and / or screws.
  • Suitable hinges (9) are known in the art and either commercially available or can be easily made. They can be made of solid steel and / or round steel. A non-limiting embodiment of a suitable pivot (9) is shown in FIG Fig. 11a and Fig. 11b shown.
  • the inventive spraying system (1) produced according to the invention and used according to the invention has a plurality of pressure distribution elements (5).
  • the pressure distribution elements (5) connect the nodes (32, 32 ', 42) to a construction pit wall (21) and / or to another pressure distribution element (5).
  • typically at each node (32, 32 ', 42) of the polygon or polygon segment (3, 3') or of the outer polygon section (4) typically at least one pressure distribution element (5).
  • the pressure distribution elements (5) are preferably arranged horizontally. The person skilled in the art knows due to the individual spraying system (1) and the respective excavation (2) in what form and number the pressure distribution elements (5) are necessary.
  • the pressure distribution elements (5) distribute the forces acting on the nodes (32, 32 ', 42) optimally sideways, i. in the plane of the polygon or polygon segment (3) to the outside and thus of the polygon or polygon segment (3) in the direction of the construction pit wall (21).
  • the pressure distribution element (5) can act as a link between the polygon or polygon segment (3, 3 ') or the outer polygon section (4) and the terrain adjacent the excavation (2), i. solid soil such as soil, rocks, etc. and / or waters.
  • the area adjacent to the excavation (2) exerts the necessary counter-pressure so that the spray system (1) can fulfill its function.
  • the pressure distribution element (5) is usually a horizontal strut, ie a linear steel element. If the junction point (32, 32 ', 42) borders on the construction pit wall (21) or on the longarine (22), the construction pit wall (21), longarine (22) and / or a stand (71) of the fixing device (7) constitute the This is especially the case when the excavation wall (21) represents at least one side of the polygon or polygon segment (3, 3 ').
  • the fixing device (7) preferably comprises at least one stand (71) which is arranged on the construction pit wall (21) and / or is part of the construction pit wall.
  • the pressure distribution element (5) Bordering the pressure distribution element (5) - or a part thereof, for example, the end of a strut - to a steel pressure element (6), the pressure distribution element (5) respectively. That part of the pressure distribution element (5) which is intended to adjoin the steel pressure element (6) preferably has a pressure distribution plate (12).
  • the lateral pressure distribution elements (5) in the form of struts are preferably in the form of tubes and / or H-beam.
  • the length of the struts depends essentially on the distance from the respective node (32, 32 ', 42) to the excavation wall (21), to the node (32', 42) resp. to another pressure distribution element (5), for example a strut.
  • Struts may have lengths of, for example, about 0.5 meters to 10 meters or more.
  • Suitable tubes and H-beams are commercially available and known to those skilled in the art. He can also make the correct choice of struts.
  • a pressure distribution plate (12) made of steel is preferably fastened to the respective end of the pressure distribution elements (5), in particular welded.
  • the inventive spraying system (1) produced according to the invention and used according to the invention has a fixing device (7).
  • the fixing device (7) fixes the arranged in a horizontal plane parts of the Spriesssystems (1), in particular the convex polygon or polygon segment (3, 3 '), the outer polygon section (4) and the pressure distribution elements (5), in particular in the form of struts.
  • the fixing device (7) in the form of a plurality of fixing elements such as uprights (71), a suspension device (72) with Auf vonmikn (73) and / or one or more abutment before, with stands (71) are often particularly preferred.
  • the suspension device (72) can be used in smaller spraying systems (1) or selectively in one or more subregions of a spraying system (1).
  • Abutments are preferably used when at least one polygon segment (3, 3 ') - for example, as a delimitation to a body of water - is used.
  • the fixing device (7) in the form of the uprights (71) and the suspension device (72) is preferably arranged in the region of the nodal points (32, 32 ', 42), mounting plates (11) typically being fastened to the fixing device (7) which the nodes (32, 32 ', 42) are arranged.
  • the fixing device (7) in the form of abutments is preferably fastened to the ends of the polygon side elements (3, 3 ').
  • the fixing device (7) comprises stands (71), these are anchored in the underground of the excavation (2).
  • the stands (71) are rammed into the subsoil of the excavation (2) in such a way that they are stable and preferably lie in the area of the junctions (32, 32 ', 42) which are typically supported by the uprights (71) come.
  • Assembly tables (11) are preferably arranged on or on the uprights (71), on which the nodes (32, 32 ', 42), ends of polygon side elements (31, 31', 41) and optionally ends of struts are arranged.
  • the fixing device (7) comprises at least one stand (71) and if the excavation (2) is located in a solid foundation, the at least one upright (71) is not arranged on the construction pit wall (21). If the fixing device (7) comprises a plurality of uprights (71), all the uprights (71) - or at least the majority, i. more than 50%, in particular more than 70%, of the stand (71) - not arranged on the construction pit wall (21).
  • Suitable stands (71) are known to the person skilled in the art. They are typically rammed into the ground by means of suitable construction machinery. Preferred stands (71) are in the form of tubes and / or H-beams. The length of the stand (71) depends essentially on the depth of the excavation (2) after completion of the excavation work and on the ground. Preferred non-limiting stands (71) include tubes, H-beams, i. Wide flange beam, in particular made of section steel according to EN 10034, DIN 1025-3 (HEA), DIN 1025-2 (HEB) and / or DIN 1025-4 (HEM), as well as sheet pile profiles, i. Sheet piling. Suitable stands (71) are commercially available and known to those skilled in the art. He can also make the correct selection of the stands (71) for the different spraying systems (1).
  • the fixing device (7) comprises a suspension device (72), by means of the suspension device (72) the spraying system (1) and thus the polygon or polygon segment (3, 3 ') and / or the outer polygon section (4) - or a subregion thereof - Hung on a rigid and massive area of the excavation wall (21), Longarine (22) and / or outside the excavation (2), for example on a rock or a wall of a neighboring building, ie fixed.
  • This fixation takes place - in the vertical direction - above the spray system to be fixed (1).
  • the suspension device (72) typically comprises at least one suspension support (73) which supports the suspension device (72) with the suspension device (72) horizontal level arranged part of the Spriesssystems (1) connects. If the fixing of the suspension device (72) is arranged above the spray system (1) to be fixed, the suspension supports (73) are subjected to tension. If the fixation of the suspension carrier (73) on the side of the construction pit wall (21) is arranged below the spray system (1), the suspension carriers (73) are subjected to pressure.
  • the at least one suspension support (73) of the suspension device (72) connects a fastening element of the suspension device (72) with selected elements of the spray system (1), in particular nodes (32, 32 ', 42) and / or mounting tables (11).
  • the polygons or polygon segment (3, 3 ') and / or the outer polygon section (4) are connected to the excavation wall (21), the longarine (22) and / or a rigid and solid area outside the excavation (2).
  • the attachment of the suspension carrier (73) is preferably carried out with swivel joints (9), wherein other, typically known, types of attachment such as welded joints can be used.
  • the suspension brackets (73) have, for example, an angle of 30 ° to 60 °, in particular an angle of 40 ° to 50 °, relative to the horizontal plane of the spray system (1) on.
  • Preferred suspension carriers (73) are in the form of tubes and / or H-beams. Suitable tubes and H-beams are commercially available and known to those skilled in the art. He can also make the appropriate choice.
  • a suspension device (72) is particularly suitable for areas of the spray system (1) which are located in the vicinity of the construction pit wall (21), for example up to a distance from the excavation wall (21) of about 20 m, in particular about 10 meters , Are nodes (32, 32 ', 42) not connected to the suspension device (72) - for example with a diameter of the excavation of greater than 50 meters, in particular greater than 30 meters - the nodes (32, 32 ', 42) are preferably stabilized by means of stand (71).
  • the production of the at least one steel pressure element (6) preferably takes place in one of the two types described, regardless of whether the steel pressure element (6) is a node (32, 32 ', 42), a wedge (10) or a side region of a polygon side element (31, 31 ', 41) or a pressure distribution element (5) in the form of a strut with a further steel element, in particular the end of a pressure distribution element (5), connects.
  • a mounting table can also be attached to the corresponding side region of the polygon side element (31, 31 ', 41) or the strut arranged, in particular welded, are.
  • the production of the steel pressure element (6) according to the present invention is simple and efficient for the person skilled in the art. This allows the individual angles and distances to be set correctly in a simple way.
  • the Baugrubenab gleich is created in a known manner, for example by means of ramming of sheet pile sections in the soil, whereby the excavation wall (21) is formed. This prevents the collapse of lateral soil or rock into the excavation pit.
  • the area within the created excavation wall (21) is excavated in a known manner up to a first, planned excavation level. The latter corresponds to the excavation depth, where the - possibly uppermost - Spriesssystem (1) is created. The expert can calculate the optimum level.
  • longarines (22) are attached in horizontal alignment to the construction pit wall (21) at the level of the spray system (1) to be created.
  • at least a portion of the Baugruben excavation is removed, the excavation in solid form such Soil and / or rock, or in liquid form such as water,
  • the fixing device (7) comprising the uprights (71) and / or the suspension device (72) is arranged, wherein preferably the uprights (71) are rammed into the ground at selected, predefined locations so that they are connected horizontally can.
  • the person skilled in the art knows how to set the level correctly and what tolerances are allowed.
  • the suspension device (72) at selected locations on the excavation wall (21) and / or outside the excavation (2) is attached.
  • mounting tables (11) are attached to the fixing device, i. typically mounted on and / or on the uprights (71) and / or on the suspension device (72).
  • the mounting tables (11) are usually made of a steel plate, for example, with a thickness of 30 mm.
  • the size, i. the surface of the assembly table (11) is usually dimensioned so that both the node (32, 32 ', 42) and the ends of the at the node (32, 32', 42) to be fastened Polygon soundiata (31, 31 ', 41) and pressure distribution elements (5) such as struts on the mounting table (11) can be placed to then create the compounds and / or to create a steel pressure element (6).
  • the assembly table (11) usually has larger dimensions than the node thereon (32, 32 ', 42).
  • the polygon side elements (31, 31 ', 41) and pressure distribution elements (5) are arranged on assembly tables (11) such that the ends of the polygon side elements (31, 31', 41) and the ends of the pressure distribution elements (5) each two mounting tables (11) together or a mounting table (11) with the excavation wall (21) connect.
  • the polygon side elements (31, 31 ', 41) and pressure distribution elements (5) are interconnected by means of nodes (32, 32', 42), preferably at least one node (32, 32 ', 42) being used as the steel pressure element (6 ) is formed. If the nodes (32, 32 ', 42) in the form of a polygonal steel element with at least 3, in particular at least 4 corners, if necessary by means of a wedge (10), an open angle between the Polygonitudemaschine (31, 31', 41) resp. Pressure distribution elements (5), for example in the form of struts, with a steel pressure element (6) are closed.
  • the excavation (2) is completely excavated, where appropriate, one or more lower-lying polygons or polygon segments (3, 3 ') and optionally one or more outer polygon sections (4) are created by u.a.
  • Mounting tables (11) are fixed, polygon side elements (31, 31 ', 41) and pressure distribution elements (5) arranged on the mounting tables (5) and then connected to nodes.
  • the spraying system (1) When the spraying system (1) is created in or on bodies of water, the spraying system (1) is often arranged in the form of a polygon segment (3) or several polygon segments (3, 3 ') arranged one above the other and / or one above the other. This is particularly the case when the excavation pit (2) to be constructed comprises part of a body of water and is exposed to the environment, i. solid soil such as rock and / or soil adjoins. If the spraying system (1) is arranged within a body of water, for example in order to build or restore bridge piers, however, a spraying system (1) can also be present in the form of one or more self-contained polygons (3, 3 ').
  • FIG Fig. 7 A non-limiting embodiment of a suitable clamping element (8) with fitting pieces (81) is shown in FIG Fig. 7 shown.
  • the polygon or polygon segment (3) has an adjacent polygon or polygon segment (3 ') with at least two polygonal side elements (31') made of steel and at least one node (32 ') and / or an outer polygon section (4) with at least two polygonal side elements (41) made of steel and at least one node (42) added to optimallyguidingsteifen the excavation (2).
  • Spriesssystems (1) is preferably used for the spraying of excavations (2), wherein the excavation wall (21) of the excavation (2) is a provisional demarcation to the soil and / or to a body of water and / or with the Spraying system (1) to obtain a minimum of obstruction in the excavation area of the excavation (2), in particular a minimum of obstruction in the construction industry and building ancillary industry in the excavation (2).
  • the excavation area of an excavation pit (2) may have solid terrain, i. solid soil such as soil and / or rock, and / or a delimitation in or to waters in which water is pumped as excavated material from the excavation represent.

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EP18214452.7A 2017-12-22 2018-12-20 Système d'étayage polygonal à noeuds d'intersection permettant de renforcer une fouille de fondation Active EP3502352B1 (fr)

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CN111691428A (zh) * 2020-04-30 2020-09-22 中铁十八局集团有限公司 一种地铁车站基坑开挖施工用组合式支护体系
CN113585286A (zh) * 2021-08-24 2021-11-02 西安建筑科技大学 一种适用于基坑支护的混凝土支撑销装式组件
CN114059542A (zh) * 2021-11-16 2022-02-18 中国建筑第七工程局有限公司 一种单元装配式溜管系统
CN114997072A (zh) * 2022-07-27 2022-09-02 中建五局第三建设有限公司 基坑水平支撑布置方案确定方法、装置、设备及存储介质
CN115288155A (zh) * 2022-08-19 2022-11-04 中国一冶集团有限公司 一种方圆组合超深永久基坑支护结构的高效建造方法

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CN110485434B (zh) * 2019-09-18 2021-07-23 建研地基基础工程有限责任公司 一种用于深基坑支护的装配式环形钢结构内支撑结构体系及设计方法
CN110644495A (zh) * 2019-09-24 2020-01-03 中天建设集团有限公司 一种抽条开挖施工方法
CN111851509A (zh) * 2020-07-22 2020-10-30 深圳市工勘岩土集团有限公司 基于深基坑内支撑结构的临时通道施工方法
CN112575791B (zh) * 2020-12-16 2022-05-13 北京京电丰盛建设有限公司 一种基坑支护结构及其施工方法

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EP2453062A1 (fr) 2010-11-16 2012-05-16 Marti AG Bern, Moosseedorf Procédé et système d'étai pour travaux de terrassement
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CN111691428A (zh) * 2020-04-30 2020-09-22 中铁十八局集团有限公司 一种地铁车站基坑开挖施工用组合式支护体系
CN111691428B (zh) * 2020-04-30 2022-01-28 中铁十八局集团有限公司 一种地铁车站基坑开挖施工用组合式支护体系
CN113585286A (zh) * 2021-08-24 2021-11-02 西安建筑科技大学 一种适用于基坑支护的混凝土支撑销装式组件
CN113585286B (zh) * 2021-08-24 2022-07-19 中铁四局集团有限公司 一种适用于基坑支护的混凝土支撑销装式组件
CN114059542A (zh) * 2021-11-16 2022-02-18 中国建筑第七工程局有限公司 一种单元装配式溜管系统
CN114059542B (zh) * 2021-11-16 2023-05-26 中国建筑第七工程局有限公司 一种单元装配式溜管系统
CN114997072A (zh) * 2022-07-27 2022-09-02 中建五局第三建设有限公司 基坑水平支撑布置方案确定方法、装置、设备及存储介质
CN115288155A (zh) * 2022-08-19 2022-11-04 中国一冶集团有限公司 一种方圆组合超深永久基坑支护结构的高效建造方法
CN115288155B (zh) * 2022-08-19 2023-10-27 中国一冶集团有限公司 一种方圆组合超深永久基坑支护结构的高效建造方法

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EP3502352B1 (fr) 2021-07-28
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WO2019122118A1 (fr) 2019-06-27

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