Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D1/00—Investigation of foundation soil in situ
  • E02D1/02—Investigation of foundation soil in situ before construction work
• • 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
  • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
  • E02D7/22—Placing by screwing down
• • 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
  • E02D5/22—Piles

Definitions

• the invention relates to a method for creating a foundation element in the ground by means of a construction device, wherein by means of a machining tool a hole in the ground is formed, in which the foundation element is created, wherein by means of a control and evaluation depending on a processing depth at least one operating size of the construction equipment is detected, which changes depending on a soil condition, according to the preamble of claim 1.
• the invention further relates to a system for creating a foundation element in the ground with a construction device, wherein a hole in the ground is formed by means of a tillage tool, in which the foundation element is created, wherein by means of a control and evaluation depending on a processing depth at least one operating size of the Building equipment is detected, which changes depending on a soil condition, according to the preamble of claim 12th
• a soil profile is usually created for the ground.
• the soil profile indicates which structure, in particular layer structure, the ground has. Knowing the soil profile of the subsoil is important in several ways. On the one hand depends on the soil profile, the sustainability of the subsoil, which has a significant impact on the design of the foundation elements. On the other hand, the soil profile is also essential from an economic point of view, since it is determined by the structure of the soil, how complex the Creation of a foundation element is. Thus, for example, the creation of a bored pile in a building ground with a large proportion of rock material due to the lower propulsion and higher tool wear more expensive than the creation of a bored pile in a ground with sand, gravel, and / or clay layers.
• test bores are carried out on a subsoil, depending on the size, in order to determine, for example on the basis of cores, with which soil profile the subsoil is constructed.
• a soil profile may vary widely even in a localized area. Usually, these fluctuations are that changes in thickness of the individual soil layers occur and possibly also changes a rocky horizon.
• the invention has for its object to provide a method and a system for creating a foundation element in the ground, with which a layer structure of the soil can be determined particularly accurately for a foundation element.
• the inventive method is characterized in that in the control and evaluation an expected soil profile is entered, which is a Layer structure of the soil with soil layers of different soil conditions indicates, and that is set by the control and evaluation unit, the detected, at least one farm size with the entered soil profile in order to determine the processing depth at which a transition between soil layers of different soil condition is present.
• a basic idea of the invention is to consider a soil profile created for the ground during the determination of the soil type during the cultivation of a soil.
• a pre-created soil profile indicates the sequence of different soil layers of different materials and with different strengths and capacities.
• the invention is based on the finding that a soil profile on a ground can be subject to locally strong fluctuations, but these fluctuations essentially relate to a thickness or a depth level of the soil layers, while the number and sequence of soil layers remains unchanged.
• an operating variable or an operating parameter is detected, which may be, for example, the torque or a power of the hydraulic drive. This farm size is correlated with the first soil layer of the soil profile.
• first processing depth If, at a certain first processing depth, a significant change in the size of the enterprise is detected, then this is due to knowledge of the invention due to a change in the soil layer.
• This change at a first processing depth can then be determined as a first layer transition.
• subsequent changes can then be determined according to the second, third and subsequent layer transitions at a given processing depth.
• the actual soil profile can be determined at the site, wherein the individual layer transitions at predetermined depths may differ from the previously determined soil profile.
• the previously determined soil profile is determined by one or more test bores at specific locations, from which an average soil profile is determined.
• an expected value of the at least one operating variable is determined by the control and evaluation unit for each soil layer of the input soil profile. If the soil profile has, for example, first a clay layer and then a gravel layer, a value can be queried by the control and evaluation unit with regard to the operating variable to be measured, for example from a database which is to be expected in the case of this soil layer. Thus, it can also be verified by the control and evaluation unit that an actually processed soil layer coincides with the expected soil layer according to the predetermined soil profile. Thus, it is also possible to determine special cases in which one or more soil layers are dispensed with in relation to the entered desired soil profile at a processing location.
• a current soil profile is generated by the control and evaluation unit for the processing location.
• This current or actual soil profile can then be stored and also compared with the predetermined target soil profile, which has been determined in advance by test drilling.
• the device operator has the option of specifying the current soil profile created in this way for the next pending processing as the desired soil profile.
• a single operating variable or a single operating parameter can be used to determine the currently processed soil layer.
• a driving speed at a given driving force can be detected as an operating variable.
• a soil characteristic value can be determined, which can be assigned on the basis of stored values in a database of a specific soil type or soil layer.
• the at least one operating variable is detected by means of at least one detection device on the construction equipment.
• the detection device may in particular be a sensor which directly detects an operating variable, such as the rotational speed.
• the detection devices can also work indirectly, wherein about the power consumption of a hydraulic rotary drive, a torque is calculated and determined.
• the detection devices are connected via a wired or wireless connection with the control and evaluation unit.
• the control and evaluation unit can be located directly on the construction equipment or in a control center, which is then in data connection via a corresponding connection to the construction equipment.
• any suitable operating variable or operating parameters can be selected and used for the method according to the invention.
• the at least one operating variable is selected from the following variables: torque, rotational speed, power, feed force, feed rate, acceleration, energy input, oscillations, sound, hydraulic pressure and / or hydraulic current.
• a combination of a plurality of operating variables can also be selected so that a statement about the currently processed soil layer can be made by the control and evaluation unit with particularly great certainty.
• the control and evaluation unit has a database in which operating variables and / or soil characteristics are stored for certain soil layers.
• the database can already be specified when a construction equipment is delivered, or it can be installed by a central office during operation or provided with new or supplemented values and maintained.
• on the part of the device driver or by the control and evaluation unit Even preferred data sets, that is preferred input variables for certain soil characteristics are stored, which have been created and determined for the respective processing location or for the respective device.
• the database can thus represent an expert system, whereby also an automatic improvement and change of the stored data sets can be provided on the basis of a preferred self-learning logic of the control and evaluation unit.
• a further preferred embodiment of the invention consists in the fact that the control and evaluation unit determines and compares ground characteristic values which are stored for specific operating variables when ascertaining operating variables, a current ground value being determined. If, for example, the control and evaluation unit recognizes, by comparing the input variable, for example the torque, with a resulting output variable, ie an adjusting rotational speed of the drilling tool or the cutting wheel, that a bottom layer with changed strength and thus with a different soil working value is discussed Control and evaluation unit according to the currently determined soil characteristic or the current detected soil layer change the input variables. For example, when determining a rock layer, the speed and the feed force can be reduced in order to avoid excessive tool wear and to provide the best possible cutting or Abtrags discipline for the soil layer.
• control and evaluation unit can change the input or operating variable according to the detected data record or display it to the device operator, for example, on a monitor.
• the previous operating size can be created by a suitable operating parameter for the soil characteristic value. In this case, therefore, an applied torque would be changed after evaluation of the database depending on the detected soil characteristic value, which is assigned to a particular soil layer.
• a soil profile is determined by the soil cultivation parameters via the processing depth or tunneling distance. and evaluation unit is determined and stored.
• a soil characteristic of a particular soil type such as clay, sand, gravel, rocks, etc. are assigned, and this is preferably done taking into account the deposited soil profile.
• these values and thus also a soil profile can be queried via the control and evaluation unit from a control center.
• a construction equipment can not only be used for working the soil, but it can also be used as a probing or analysis tool for exploring a soil profile.
• preferred operating variables are determined by the control and evaluation unit for the current soil profile over the processing depth and stored as a data record in the database.
• a pattern data set for a hole at a construction site with the previously determined soil profile can be created, for example, up to a first depth a first torque and a first feed force, then at a second depth, from which a second layer of soil is given, a second Torque are stored with a second feed force and so on.
• Such a record for a floor with a special soil profile can then be retrieved for further processing at the same site. It can be assumed that at a construction site, a soil profile rarely changes abruptly.
• On the basis of the data of the first processing can be created so effectively the further processing, especially holes or slots, even by less experienced device operators.
• the method according to the invention can be used in the various soil cultivation variants.
• a particularly preferred variant of the method is that drilling is carried out with a drilling tool or milling with a trench cutter as tillage.
• the drilling may be a continuous drilling, such as with an endless screw or a discontinuous drilling, such as a drilling bucket or with a simple auger.
• the method according to the invention can also be used in double-head drilling, in which at least two rotary drive units are provided. It can be a first rotary drive unit may be provided for an internal drilling tool, while another rotary drive unit is arranged for an outboard drill pipe. Drilling in the ground also includes rock drilling, which can be done in an approximate vertical wall or even at the ceiling area in a tunnel, such as with anchor or HDI drilling.
• a trench wall cutter When milling a trench wall cutter is preferably used with at least one pair, preferably two pairs of rotationally driven cutting wheels.
• the milling of a milling slot can be carried out in a single-phase, two-phase or a CSM R process, in which a soil mortar mixture is produced in situ in the milling slot by the milling cutter. It can be provided one or more Fräsradantriebe.
• the invention further comprises a system or installation for creating a foundation element in the ground, which is characterized in that in the control and evaluation an expected soil profile is entered, which indicates by a layer structure of the soil with soil layers of different soil properties, and that the detected, at least one operating variable can be correlated with the entered soil profile by the control and evaluation unit in order to determine the processing depth at which there is a transition between soil layers of different soil properties.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mining & Mineral Resources (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Civil Engineering (AREA)
• Paleontology (AREA)
• General Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Analytical Chemistry (AREA)
• Chemical & Material Sciences (AREA)
• Soil Sciences (AREA)
• Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
• Geology (AREA)
• Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• Earth Drilling (AREA)
• Geochemistry & Mineralogy (AREA)

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Applications Claiming Priority (1)

Publications (2)

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Citations (4)

Family Cites Families (53)

• 2018
  • 2018-03-01 EP EP18159364.1A patent/EP3533932B1/fr active Active
• 2019
  • 2019-01-17 KR KR1020207027467A patent/KR20200124717A/ko not_active Ceased
  • 2019-01-17 WO PCT/EP2019/051171 patent/WO2019166153A1/fr not_active Ceased
  • 2019-01-17 US US16/976,033 patent/US12104342B2/en active Active
  • 2019-01-17 CN CN201980016606.5A patent/CN112088233B/zh active Active
  • 2019-01-17 JP JP2020545728A patent/JP7317844B2/ja active Active

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